summaryrefslogtreecommitdiff
path: root/drivers/macintosh
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/macintosh')
-rw-r--r--drivers/macintosh/Kconfig198
-rw-r--r--drivers/macintosh/Makefile29
-rw-r--r--drivers/macintosh/adb-iop.c287
-rw-r--r--drivers/macintosh/adb.c910
-rw-r--r--drivers/macintosh/adbhid.c1177
-rw-r--r--drivers/macintosh/ans-lcd.c186
-rw-r--r--drivers/macintosh/apm_emu.c553
-rw-r--r--drivers/macintosh/mac_hid.c140
-rw-r--r--drivers/macintosh/macio-adb.c284
-rw-r--r--drivers/macintosh/macio_asic.c636
-rw-r--r--drivers/macintosh/macserial.c3036
-rw-r--r--drivers/macintosh/macserial.h461
-rw-r--r--drivers/macintosh/mediabay.c851
-rw-r--r--drivers/macintosh/nvram.c131
-rw-r--r--drivers/macintosh/smu.c364
-rw-r--r--drivers/macintosh/therm_adt746x.c612
-rw-r--r--drivers/macintosh/therm_pm72.c2080
-rw-r--r--drivers/macintosh/therm_pm72.h297
-rw-r--r--drivers/macintosh/therm_windtunnel.c531
-rw-r--r--drivers/macintosh/via-cuda.c628
-rw-r--r--drivers/macintosh/via-macii.c653
-rw-r--r--drivers/macintosh/via-maciisi.c661
-rw-r--r--drivers/macintosh/via-pmu.c3147
-rw-r--r--drivers/macintosh/via-pmu68k.c1063
24 files changed, 18915 insertions, 0 deletions
diff --git a/drivers/macintosh/Kconfig b/drivers/macintosh/Kconfig
new file mode 100644
index 000000000000..8a7117a08cf0
--- /dev/null
+++ b/drivers/macintosh/Kconfig
@@ -0,0 +1,198 @@
+
+menu "Macintosh device drivers"
+ depends on PPC || MAC
+
+config ADB
+ bool "Apple Desktop Bus (ADB) support"
+ depends on MAC || PPC_PMAC
+ help
+ Apple Desktop Bus (ADB) support is for support of devices which
+ are connected to an ADB port. ADB devices tend to have 4 pins.
+ If you have an Apple Macintosh prior to the iMac, an iBook or
+ PowerBook, or a "Blue and White G3", you probably want to say Y
+ here. Otherwise say N.
+
+config ADB_MACII
+ bool "Include Mac II ADB driver"
+ depends on ADB && MAC
+ help
+ Say Y here if want your kernel to support Macintosh systems that use
+ the Mac II style ADB. This includes the II, IIx, IIcx, SE/30, IIci,
+ Quadra 610, Quadra 650, Quadra 700, Quadra 800, Centris 610 and
+ Centris 650.
+
+config ADB_MACIISI
+ bool "Include Mac IIsi ADB driver"
+ depends on ADB && MAC
+ help
+ Say Y here if want your kernel to support Macintosh systems that use
+ the Mac IIsi style ADB. This includes the IIsi, IIvi, IIvx, Classic
+ II, LC, LC II, LC III, Performa 460, and the Performa 600.
+
+config ADB_IOP
+ bool "Include IOP (IIfx/Quadra 9x0) ADB driver"
+ depends on ADB && MAC
+ help
+ The I/O Processor (IOP) is an Apple custom IC designed to provide
+ intelligent support for I/O controllers. It is described at
+ <http://www.angelfire.com/ca2/dev68k/iopdesc.html> to enable direct
+ support for it, say 'Y' here.
+
+config ADB_PMU68K
+ bool "Include PMU (Powerbook) ADB driver"
+ depends on ADB && MAC
+ help
+ Say Y here if want your kernel to support the m68k based Powerbooks.
+ This includes the PowerBook 140, PowerBook 145, PowerBook 150,
+ PowerBook 160, PowerBook 165, PowerBook 165c, PowerBook 170,
+ PowerBook 180, PowerBook, 180c, PowerBook 190cs, PowerBook 520,
+ PowerBook Duo 210, PowerBook Duo 230, PowerBook Duo 250,
+ PowerBook Duo 270c, PowerBook Duo 280 and PowerBook Duo 280c.
+
+# we want to change this to something like CONFIG_SYSCTRL_CUDA/PMU
+config ADB_CUDA
+ bool "Support for CUDA based Macs and PowerMacs"
+ depends on (ADB || PPC_PMAC) && !PPC_PMAC64
+ help
+ This provides support for CUDA based Macintosh and Power Macintosh
+ systems. This includes many m68k based Macs (Color Classic, Mac TV,
+ Performa 475, Performa 520, Performa 550, Performa 575,
+ Performa 588, Quadra 605, Quadra 630, Quadra/Centris 660AV, and
+ Quadra 840AV), most OldWorld PowerMacs, the first generation iMacs,
+ the Blue&White G3 and the "Yikes" G4 (PCI Graphics). All later
+ models should use CONFIG_ADB_PMU instead. It is safe to say Y here
+ even if your machine doesn't have a CUDA.
+
+ If unsure say Y.
+
+config ADB_PMU
+ bool "Support for PMU based PowerMacs"
+ depends on PPC_PMAC
+ help
+ On PowerBooks, iBooks, and recent iMacs and Power Macintoshes, the
+ PMU is an embedded microprocessor whose primary function is to
+ control system power, and battery charging on the portable models.
+ The PMU also controls the ADB (Apple Desktop Bus) which connects to
+ the keyboard and mouse on some machines, as well as the non-volatile
+ RAM and the RTC (real time clock) chip. Say Y to enable support for
+ this device; you should do so if your machine is one of those
+ mentioned above.
+
+config PMAC_SMU
+ bool "Support for SMU based PowerMacs"
+ depends on PPC_PMAC64
+ help
+ This option adds support for the newer G5 iMacs and PowerMacs based
+ on the "SMU" system control chip which replaces the old PMU.
+ If you don't know, say Y.
+
+config PMAC_PBOOK
+ bool "Power management support for PowerBooks"
+ depends on ADB_PMU
+ ---help---
+ This provides support for putting a PowerBook to sleep; it also
+ enables media bay support. Power management works on the
+ PB2400/3400/3500, Wallstreet, Lombard, and Bronze PowerBook G3 and
+ the Titanium Powerbook G4, as well as the iBooks. You should get
+ the power management daemon, pmud, to make it work and you must have
+ the /dev/pmu device (see the pmud README).
+
+ Get pmud from <ftp://ftp.samba.org/pub/ppclinux/pmud/>.
+
+ If you have a PowerBook, you should say Y here.
+
+ You may also want to compile the dma sound driver as a module and
+ have it autoloaded. The act of removing the module shuts down the
+ sound hardware for more power savings.
+
+config PM
+ bool
+ depends on PPC_PMAC && ADB_PMU && PMAC_PBOOK
+ default y
+
+config PMAC_APM_EMU
+ tristate "APM emulation"
+ depends on PMAC_PBOOK
+
+# made a separate option since backlight may end up beeing used
+# on non-powerbook machines (but only on PMU based ones AFAIK)
+config PMAC_BACKLIGHT
+ bool "Backlight control for LCD screens"
+ depends on ADB_PMU
+ help
+ Say Y here to build in code to manage the LCD backlight on a
+ Macintosh PowerBook. With this code, the backlight will be turned
+ on and off appropriately on power-management and lid-open/lid-closed
+ events; also, the PowerBook button device will be enabled so you can
+ change the screen brightness.
+
+config MAC_SERIAL
+ tristate "Support for PowerMac serial ports (OBSOLETE DRIVER)"
+ depends on PPC_PMAC && BROKEN
+ help
+ This driver is obsolete. Use CONFIG_SERIAL_PMACZILOG in
+ "Character devices --> Serial drivers --> PowerMac z85c30" option.
+
+config ADB_MACIO
+ bool "Include MacIO (CHRP) ADB driver"
+ depends on ADB && PPC_CHRP && !PPC_PMAC64
+ help
+ Say Y here to include direct support for the ADB controller in the
+ Hydra chip used on PowerPC Macintoshes of the CHRP type. (The Hydra
+ also includes a MESH II SCSI controller, DBDMA controller, VIA chip,
+ OpenPIC controller and two RS422/Geoports.)
+
+config INPUT_ADBHID
+ bool "Support for ADB input devices (keyboard, mice, ...)"
+ depends on ADB && INPUT=y
+ help
+ Say Y here if you want to have ADB (Apple Desktop Bus) HID devices
+ such as keyboards, mice, joysticks, trackpads or graphic tablets
+ handled by the input layer. If you say Y here, make sure to say Y to
+ the corresponding drivers "Keyboard support" (CONFIG_INPUT_KEYBDEV),
+ "Mouse Support" (CONFIG_INPUT_MOUSEDEV) and "Event interface
+ support" (CONFIG_INPUT_EVDEV) as well.
+
+ If unsure, say Y.
+
+config MAC_EMUMOUSEBTN
+ bool "Support for mouse button 2+3 emulation"
+ depends on INPUT_ADBHID
+ help
+ This provides generic support for emulating the 2nd and 3rd mouse
+ button with keypresses. If you say Y here, the emulation is still
+ disabled by default. The emulation is controlled by these sysctl
+ entries:
+ /proc/sys/dev/mac_hid/mouse_button_emulation
+ /proc/sys/dev/mac_hid/mouse_button2_keycode
+ /proc/sys/dev/mac_hid/mouse_button3_keycode
+
+ If you have an Apple machine with a 1-button mouse, say Y here.
+
+config THERM_WINDTUNNEL
+ tristate "Support for thermal management on Windtunnel G4s"
+ depends on I2C && I2C_KEYWEST && PPC_PMAC && !PPC_PMAC64
+ help
+ This driver provides some thermostat and fan control for the desktop
+ G4 "Windtunnel"
+
+config THERM_ADT746X
+ tristate "Support for thermal mgmnt on laptops with ADT 746x chipset"
+ depends on I2C && I2C_KEYWEST && PPC_PMAC && !PPC_PMAC64
+ help
+ This driver provides some thermostat and fan control for the
+ iBook G4, and the ATI based aluminium PowerBooks, allowing slighlty
+ better fan behaviour by default, and some manual control.
+
+config THERM_PM72
+ tristate "Support for thermal management on PowerMac G5"
+ depends on I2C && I2C_KEYWEST && PPC_PMAC64
+ help
+ This driver provides thermostat and fan control for the desktop
+ G5 machines.
+
+config ANSLCD
+ tristate "Support for ANS LCD display"
+ depends on ADB_CUDA && PPC_PMAC
+
+endmenu
diff --git a/drivers/macintosh/Makefile b/drivers/macintosh/Makefile
new file mode 100644
index 000000000000..c3a4705a8295
--- /dev/null
+++ b/drivers/macintosh/Makefile
@@ -0,0 +1,29 @@
+#
+# Makefile for the Macintosh-specific device drivers.
+#
+
+# Each configuration option enables a list of files.
+
+obj-$(CONFIG_PPC_PMAC) += macio_asic.o
+
+obj-$(CONFIG_PMAC_PBOOK) += mediabay.o
+obj-$(CONFIG_MAC_SERIAL) += macserial.o
+obj-$(CONFIG_MAC_EMUMOUSEBTN) += mac_hid.o
+obj-$(CONFIG_INPUT_ADBHID) += adbhid.o
+obj-$(CONFIG_ANSLCD) += ans-lcd.o
+
+obj-$(CONFIG_ADB_PMU) += via-pmu.o
+obj-$(CONFIG_ADB_CUDA) += via-cuda.o
+obj-$(CONFIG_PMAC_APM_EMU) += apm_emu.o
+obj-$(CONFIG_PMAC_SMU) += smu.o
+
+obj-$(CONFIG_ADB) += adb.o
+obj-$(CONFIG_ADB_MACII) += via-macii.o
+obj-$(CONFIG_ADB_MACIISI) += via-maciisi.o
+obj-$(CONFIG_ADB_IOP) += adb-iop.o
+obj-$(CONFIG_ADB_PMU68K) += via-pmu68k.o
+obj-$(CONFIG_ADB_MACIO) += macio-adb.o
+
+obj-$(CONFIG_THERM_PM72) += therm_pm72.o
+obj-$(CONFIG_THERM_WINDTUNNEL) += therm_windtunnel.o
+obj-$(CONFIG_THERM_ADT746X) += therm_adt746x.o
diff --git a/drivers/macintosh/adb-iop.c b/drivers/macintosh/adb-iop.c
new file mode 100644
index 000000000000..71aeb912ec61
--- /dev/null
+++ b/drivers/macintosh/adb-iop.c
@@ -0,0 +1,287 @@
+/*
+ * I/O Processor (IOP) ADB Driver
+ * Written and (C) 1999 by Joshua M. Thompson (funaho@jurai.org)
+ * Based on via-cuda.c by Paul Mackerras.
+ *
+ * 1999-07-01 (jmt) - First implementation for new driver architecture.
+ *
+ * 1999-07-31 (jmt) - First working version.
+ *
+ * TODO:
+ *
+ * o Implement SRQ handling.
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/proc_fs.h>
+
+#include <asm/bootinfo.h>
+#include <asm/macintosh.h>
+#include <asm/macints.h>
+#include <asm/mac_iop.h>
+#include <asm/mac_oss.h>
+#include <asm/adb_iop.h>
+
+#include <linux/adb.h>
+
+/*#define DEBUG_ADB_IOP*/
+
+extern void iop_ism_irq(int, void *, struct pt_regs *);
+
+static struct adb_request *current_req;
+static struct adb_request *last_req;
+#if 0
+static unsigned char reply_buff[16];
+static unsigned char *reply_ptr;
+#endif
+
+static enum adb_iop_state {
+ idle,
+ sending,
+ awaiting_reply
+} adb_iop_state;
+
+static void adb_iop_start(void);
+static int adb_iop_probe(void);
+static int adb_iop_init(void);
+static int adb_iop_send_request(struct adb_request *, int);
+static int adb_iop_write(struct adb_request *);
+static int adb_iop_autopoll(int);
+static void adb_iop_poll(void);
+static int adb_iop_reset_bus(void);
+
+struct adb_driver adb_iop_driver = {
+ "ISM IOP",
+ adb_iop_probe,
+ adb_iop_init,
+ adb_iop_send_request,
+ adb_iop_autopoll,
+ adb_iop_poll,
+ adb_iop_reset_bus
+};
+
+static void adb_iop_end_req(struct adb_request *req, int state)
+{
+ req->complete = 1;
+ current_req = req->next;
+ if (req->done) (*req->done)(req);
+ adb_iop_state = state;
+}
+
+/*
+ * Completion routine for ADB commands sent to the IOP.
+ *
+ * This will be called when a packet has been successfully sent.
+ */
+
+static void adb_iop_complete(struct iop_msg *msg, struct pt_regs *regs)
+{
+ struct adb_request *req;
+ uint flags;
+
+ local_irq_save(flags);
+
+ req = current_req;
+ if ((adb_iop_state == sending) && req && req->reply_expected) {
+ adb_iop_state = awaiting_reply;
+ }
+
+ local_irq_restore(flags);
+}
+
+/*
+ * Listen for ADB messages from the IOP.
+ *
+ * This will be called when unsolicited messages (usually replies to TALK
+ * commands or autopoll packets) are received.
+ */
+
+static void adb_iop_listen(struct iop_msg *msg, struct pt_regs *regs)
+{
+ struct adb_iopmsg *amsg = (struct adb_iopmsg *) msg->message;
+ struct adb_request *req;
+ uint flags;
+#ifdef DEBUG_ADB_IOP
+ int i;
+#endif
+
+ local_irq_save(flags);
+
+ req = current_req;
+
+#ifdef DEBUG_ADB_IOP
+ printk("adb_iop_listen %p: rcvd packet, %d bytes: %02X %02X", req,
+ (uint) amsg->count + 2, (uint) amsg->flags, (uint) amsg->cmd);
+ for (i = 0; i < amsg->count; i++)
+ printk(" %02X", (uint) amsg->data[i]);
+ printk("\n");
+#endif
+
+ /* Handle a timeout. Timeout packets seem to occur even after */
+ /* we've gotten a valid reply to a TALK, so I'm assuming that */
+ /* a "timeout" is actually more like an "end-of-data" signal. */
+ /* We need to send back a timeout packet to the IOP to shut */
+ /* it up, plus complete the current request, if any. */
+
+ if (amsg->flags & ADB_IOP_TIMEOUT) {
+ msg->reply[0] = ADB_IOP_TIMEOUT | ADB_IOP_AUTOPOLL;
+ msg->reply[1] = 0;
+ msg->reply[2] = 0;
+ if (req && (adb_iop_state != idle)) {
+ adb_iop_end_req(req, idle);
+ }
+ } else {
+ /* TODO: is it possible for more than one chunk of data */
+ /* to arrive before the timeout? If so we need to */
+ /* use reply_ptr here like the other drivers do. */
+ if ((adb_iop_state == awaiting_reply) &&
+ (amsg->flags & ADB_IOP_EXPLICIT)) {
+ req->reply_len = amsg->count + 1;
+ memcpy(req->reply, &amsg->cmd, req->reply_len);
+ } else {
+ adb_input(&amsg->cmd, amsg->count + 1, regs,
+ amsg->flags & ADB_IOP_AUTOPOLL);
+ }
+ memcpy(msg->reply, msg->message, IOP_MSG_LEN);
+ }
+ iop_complete_message(msg);
+ local_irq_restore(flags);
+}
+
+/*
+ * Start sending an ADB packet, IOP style
+ *
+ * There isn't much to do other than hand the packet over to the IOP
+ * after encapsulating it in an adb_iopmsg.
+ */
+
+static void adb_iop_start(void)
+{
+ unsigned long flags;
+ struct adb_request *req;
+ struct adb_iopmsg amsg;
+#ifdef DEBUG_ADB_IOP
+ int i;
+#endif
+
+ /* get the packet to send */
+ req = current_req;
+ if (!req) return;
+
+ local_irq_save(flags);
+
+#ifdef DEBUG_ADB_IOP
+ printk("adb_iop_start %p: sending packet, %d bytes:", req, req->nbytes);
+ for (i = 0 ; i < req->nbytes ; i++)
+ printk(" %02X", (uint) req->data[i]);
+ printk("\n");
+#endif
+
+ /* The IOP takes MacII-style packets, so */
+ /* strip the initial ADB_PACKET byte. */
+
+ amsg.flags = ADB_IOP_EXPLICIT;
+ amsg.count = req->nbytes - 2;
+
+ /* amsg.data immediately follows amsg.cmd, effectively making */
+ /* amsg.cmd a pointer to the beginning of a full ADB packet. */
+ memcpy(&amsg.cmd, req->data + 1, req->nbytes - 1);
+
+ req->sent = 1;
+ adb_iop_state = sending;
+ local_irq_restore(flags);
+
+ /* Now send it. The IOP manager will call adb_iop_complete */
+ /* when the packet has been sent. */
+
+ iop_send_message(ADB_IOP, ADB_CHAN, req,
+ sizeof(amsg), (__u8 *) &amsg, adb_iop_complete);
+}
+
+int adb_iop_probe(void)
+{
+ if (!iop_ism_present) return -ENODEV;
+ return 0;
+}
+
+int adb_iop_init(void)
+{
+ printk("adb: IOP ISM driver v0.4 for Unified ADB.\n");
+ iop_listen(ADB_IOP, ADB_CHAN, adb_iop_listen, "ADB");
+ return 0;
+}
+
+int adb_iop_send_request(struct adb_request *req, int sync)
+{
+ int err;
+
+ err = adb_iop_write(req);
+ if (err) return err;
+
+ if (sync) {
+ while (!req->complete) adb_iop_poll();
+ }
+ return 0;
+}
+
+static int adb_iop_write(struct adb_request *req)
+{
+ unsigned long flags;
+
+ if ((req->nbytes < 2) || (req->data[0] != ADB_PACKET)) {
+ req->complete = 1;
+ return -EINVAL;
+ }
+
+ local_irq_save(flags);
+
+ req->next = 0;
+ req->sent = 0;
+ req->complete = 0;
+ req->reply_len = 0;
+
+ if (current_req != 0) {
+ last_req->next = req;
+ last_req = req;
+ } else {
+ current_req = req;
+ last_req = req;
+ }
+
+ local_irq_restore(flags);
+ if (adb_iop_state == idle) adb_iop_start();
+ return 0;
+}
+
+int adb_iop_autopoll(int devs)
+{
+ /* TODO: how do we enable/disable autopoll? */
+ return 0;
+}
+
+void adb_iop_poll(void)
+{
+ if (adb_iop_state == idle) adb_iop_start();
+ iop_ism_irq(0, (void *) ADB_IOP, NULL);
+}
+
+int adb_iop_reset_bus(void)
+{
+ struct adb_request req = {
+ .reply_expected = 0,
+ .nbytes = 2,
+ .data = { ADB_PACKET, 0 },
+ };
+
+ adb_iop_write(&req);
+ while (!req.complete) {
+ adb_iop_poll();
+ schedule();
+ }
+
+ return 0;
+}
diff --git a/drivers/macintosh/adb.c b/drivers/macintosh/adb.c
new file mode 100644
index 000000000000..7297c77f99cf
--- /dev/null
+++ b/drivers/macintosh/adb.c
@@ -0,0 +1,910 @@
+/*
+ * Device driver for the Apple Desktop Bus
+ * and the /dev/adb device on macintoshes.
+ *
+ * Copyright (C) 1996 Paul Mackerras.
+ *
+ * Modified to declare controllers as structures, added
+ * client notification of bus reset and handles PowerBook
+ * sleep, by Benjamin Herrenschmidt.
+ *
+ * To do:
+ *
+ * - /sys/bus/adb to list the devices and infos
+ * - more /dev/adb to allow userland to receive the
+ * flow of auto-polling datas from a given device.
+ * - move bus probe to a kernel thread
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/smp_lock.h>
+#include <linux/adb.h>
+#include <linux/cuda.h>
+#include <linux/pmu.h>
+#include <linux/notifier.h>
+#include <linux/wait.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/completion.h>
+#include <linux/device.h>
+#include <linux/devfs_fs_kernel.h>
+
+#include <asm/uaccess.h>
+#include <asm/semaphore.h>
+#ifdef CONFIG_PPC
+#include <asm/prom.h>
+#endif
+
+
+EXPORT_SYMBOL(adb_controller);
+EXPORT_SYMBOL(adb_client_list);
+
+extern struct adb_driver via_macii_driver;
+extern struct adb_driver via_maciisi_driver;
+extern struct adb_driver via_cuda_driver;
+extern struct adb_driver adb_iop_driver;
+extern struct adb_driver via_pmu_driver;
+extern struct adb_driver macio_adb_driver;
+
+static struct adb_driver *adb_driver_list[] = {
+#ifdef CONFIG_ADB_MACII
+ &via_macii_driver,
+#endif
+#ifdef CONFIG_ADB_MACIISI
+ &via_maciisi_driver,
+#endif
+#ifdef CONFIG_ADB_CUDA
+ &via_cuda_driver,
+#endif
+#ifdef CONFIG_ADB_IOP
+ &adb_iop_driver,
+#endif
+#if defined(CONFIG_ADB_PMU) || defined(CONFIG_ADB_PMU68K)
+ &via_pmu_driver,
+#endif
+#ifdef CONFIG_ADB_MACIO
+ &macio_adb_driver,
+#endif
+ NULL
+};
+
+static struct class_simple *adb_dev_class;
+
+struct adb_driver *adb_controller;
+struct notifier_block *adb_client_list = NULL;
+static int adb_got_sleep;
+static int adb_inited;
+static pid_t adb_probe_task_pid;
+static DECLARE_MUTEX(adb_probe_mutex);
+static struct completion adb_probe_task_comp;
+static int sleepy_trackpad;
+static int autopoll_devs;
+int __adb_probe_sync;
+
+#ifdef CONFIG_PMAC_PBOOK
+static int adb_notify_sleep(struct pmu_sleep_notifier *self, int when);
+static struct pmu_sleep_notifier adb_sleep_notifier = {
+ adb_notify_sleep,
+ SLEEP_LEVEL_ADB,
+};
+#endif
+
+static int adb_scan_bus(void);
+static int do_adb_reset_bus(void);
+static void adbdev_init(void);
+static int try_handler_change(int, int);
+
+static struct adb_handler {
+ void (*handler)(unsigned char *, int, struct pt_regs *, int);
+ int original_address;
+ int handler_id;
+ int busy;
+} adb_handler[16];
+
+/*
+ * The adb_handler_sem mutex protects all accesses to the original_address
+ * and handler_id fields of adb_handler[i] for all i, and changes to the
+ * handler field.
+ * Accesses to the handler field are protected by the adb_handler_lock
+ * rwlock. It is held across all calls to any handler, so that by the
+ * time adb_unregister returns, we know that the old handler isn't being
+ * called.
+ */
+static DECLARE_MUTEX(adb_handler_sem);
+static DEFINE_RWLOCK(adb_handler_lock);
+
+#if 0
+static void printADBreply(struct adb_request *req)
+{
+ int i;
+
+ printk("adb reply (%d)", req->reply_len);
+ for(i = 0; i < req->reply_len; i++)
+ printk(" %x", req->reply[i]);
+ printk("\n");
+
+}
+#endif
+
+
+static __inline__ void adb_wait_ms(unsigned int ms)
+{
+ if (current->pid && adb_probe_task_pid &&
+ adb_probe_task_pid == current->pid)
+ msleep(ms);
+ else
+ mdelay(ms);
+}
+
+static int adb_scan_bus(void)
+{
+ int i, highFree=0, noMovement;
+ int devmask = 0;
+ struct adb_request req;
+
+ /* assumes adb_handler[] is all zeroes at this point */
+ for (i = 1; i < 16; i++) {
+ /* see if there is anything at address i */
+ adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
+ (i << 4) | 0xf);
+ if (req.reply_len > 1)
+ /* one or more devices at this address */
+ adb_handler[i].original_address = i;
+ else if (i > highFree)
+ highFree = i;
+ }
+
+ /* Note we reset noMovement to 0 each time we move a device */
+ for (noMovement = 1; noMovement < 2 && highFree > 0; noMovement++) {
+ for (i = 1; i < 16; i++) {
+ if (adb_handler[i].original_address == 0)
+ continue;
+ /*
+ * Send a "talk register 3" command to address i
+ * to provoke a collision if there is more than
+ * one device at this address.
+ */
+ adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
+ (i << 4) | 0xf);
+ /*
+ * Move the device(s) which didn't detect a
+ * collision to address `highFree'. Hopefully
+ * this only moves one device.
+ */
+ adb_request(&req, NULL, ADBREQ_SYNC, 3,
+ (i<< 4) | 0xb, (highFree | 0x60), 0xfe);
+ /*
+ * See if anybody actually moved. This is suggested
+ * by HW TechNote 01:
+ *
+ * http://developer.apple.com/technotes/hw/hw_01.html
+ */
+ adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
+ (highFree << 4) | 0xf);
+ if (req.reply_len <= 1) continue;
+ /*
+ * Test whether there are any device(s) left
+ * at address i.
+ */
+ adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
+ (i << 4) | 0xf);
+ if (req.reply_len > 1) {
+ /*
+ * There are still one or more devices
+ * left at address i. Register the one(s)
+ * we moved to `highFree', and find a new
+ * value for highFree.
+ */
+ adb_handler[highFree].original_address =
+ adb_handler[i].original_address;
+ while (highFree > 0 &&
+ adb_handler[highFree].original_address)
+ highFree--;
+ if (highFree <= 0)
+ break;
+
+ noMovement = 0;
+ }
+ else {
+ /*
+ * No devices left at address i; move the
+ * one(s) we moved to `highFree' back to i.
+ */
+ adb_request(&req, NULL, ADBREQ_SYNC, 3,
+ (highFree << 4) | 0xb,
+ (i | 0x60), 0xfe);
+ }
+ }
+ }
+
+ /* Now fill in the handler_id field of the adb_handler entries. */
+ printk(KERN_DEBUG "adb devices:");
+ for (i = 1; i < 16; i++) {
+ if (adb_handler[i].original_address == 0)
+ continue;
+ adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
+ (i << 4) | 0xf);
+ adb_handler[i].handler_id = req.reply[2];
+ printk(" [%d]: %d %x", i, adb_handler[i].original_address,
+ adb_handler[i].handler_id);
+ devmask |= 1 << i;
+ }
+ printk("\n");
+ return devmask;
+}
+
+/*
+ * This kernel task handles ADB probing. It dies once probing is
+ * completed.
+ */
+static int
+adb_probe_task(void *x)
+{
+ sigset_t blocked;
+
+ strcpy(current->comm, "kadbprobe");
+
+ sigfillset(&blocked);
+ sigprocmask(SIG_BLOCK, &blocked, NULL);
+ flush_signals(current);
+
+ printk(KERN_INFO "adb: starting probe task...\n");
+ do_adb_reset_bus();
+ printk(KERN_INFO "adb: finished probe task...\n");
+
+ adb_probe_task_pid = 0;
+ up(&adb_probe_mutex);
+
+ return 0;
+}
+
+static void
+__adb_probe_task(void *data)
+{
+ adb_probe_task_pid = kernel_thread(adb_probe_task, NULL, SIGCHLD | CLONE_KERNEL);
+}
+
+static DECLARE_WORK(adb_reset_work, __adb_probe_task, NULL);
+
+int
+adb_reset_bus(void)
+{
+ if (__adb_probe_sync) {
+ do_adb_reset_bus();
+ return 0;
+ }
+
+ down(&adb_probe_mutex);
+ schedule_work(&adb_reset_work);
+ return 0;
+}
+
+int __init adb_init(void)
+{
+ struct adb_driver *driver;
+ int i;
+
+#ifdef CONFIG_PPC32
+ if ( (_machine != _MACH_chrp) && (_machine != _MACH_Pmac) )
+ return 0;
+#endif
+#ifdef CONFIG_MAC
+ if (!MACH_IS_MAC)
+ return 0;
+#endif
+
+ /* xmon may do early-init */
+ if (adb_inited)
+ return 0;
+ adb_inited = 1;
+
+ adb_controller = NULL;
+
+ i = 0;
+ while ((driver = adb_driver_list[i++]) != NULL) {
+ if (!driver->probe()) {
+ adb_controller = driver;
+ break;
+ }
+ }
+ if ((adb_controller == NULL) || adb_controller->init()) {
+ printk(KERN_WARNING "Warning: no ADB interface detected\n");
+ adb_controller = NULL;
+ } else {
+#ifdef CONFIG_PMAC_PBOOK
+ pmu_register_sleep_notifier(&adb_sleep_notifier);
+#endif /* CONFIG_PMAC_PBOOK */
+#ifdef CONFIG_PPC
+ if (machine_is_compatible("AAPL,PowerBook1998") ||
+ machine_is_compatible("PowerBook1,1"))
+ sleepy_trackpad = 1;
+#endif /* CONFIG_PPC */
+ init_completion(&adb_probe_task_comp);
+ adbdev_init();
+ adb_reset_bus();
+ }
+ return 0;
+}
+
+__initcall(adb_init);
+
+#ifdef CONFIG_PMAC_PBOOK
+/*
+ * notify clients before sleep and reset bus afterwards
+ */
+int
+adb_notify_sleep(struct pmu_sleep_notifier *self, int when)
+{
+ int ret;
+
+ switch (when) {
+ case PBOOK_SLEEP_REQUEST:
+ adb_got_sleep = 1;
+ /* We need to get a lock on the probe thread */
+ down(&adb_probe_mutex);
+ /* Stop autopoll */
+ if (adb_controller->autopoll)
+ adb_controller->autopoll(0);
+ ret = notifier_call_chain(&adb_client_list, ADB_MSG_POWERDOWN, NULL);
+ if (ret & NOTIFY_STOP_MASK) {
+ up(&adb_probe_mutex);
+ return PBOOK_SLEEP_REFUSE;
+ }
+ break;
+ case PBOOK_SLEEP_REJECT:
+ if (adb_got_sleep) {
+ adb_got_sleep = 0;
+ up(&adb_probe_mutex);
+ adb_reset_bus();
+ }
+ break;
+
+ case PBOOK_SLEEP_NOW:
+ break;
+ case PBOOK_WAKE:
+ adb_got_sleep = 0;
+ up(&adb_probe_mutex);
+ adb_reset_bus();
+ break;
+ }
+ return PBOOK_SLEEP_OK;
+}
+#endif /* CONFIG_PMAC_PBOOK */
+
+static int
+do_adb_reset_bus(void)
+{
+ int ret, nret;
+
+ if (adb_controller == NULL)
+ return -ENXIO;
+
+ if (adb_controller->autopoll)
+ adb_controller->autopoll(0);
+
+ nret = notifier_call_chain(&adb_client_list, ADB_MSG_PRE_RESET, NULL);
+ if (nret & NOTIFY_STOP_MASK) {
+ if (adb_controller->autopoll)
+ adb_controller->autopoll(autopoll_devs);
+ return -EBUSY;
+ }
+
+ if (sleepy_trackpad) {
+ /* Let the trackpad settle down */
+ adb_wait_ms(500);
+ }
+
+ down(&adb_handler_sem);
+ write_lock_irq(&adb_handler_lock);
+ memset(adb_handler, 0, sizeof(adb_handler));
+ write_unlock_irq(&adb_handler_lock);
+
+ /* That one is still a bit synchronous, oh well... */
+ if (adb_controller->reset_bus)
+ ret = adb_controller->reset_bus();
+ else
+ ret = 0;
+
+ if (sleepy_trackpad) {
+ /* Let the trackpad settle down */
+ adb_wait_ms(1500);
+ }
+
+ if (!ret) {
+ autopoll_devs = adb_scan_bus();
+ if (adb_controller->autopoll)
+ adb_controller->autopoll(autopoll_devs);
+ }
+ up(&adb_handler_sem);
+
+ nret = notifier_call_chain(&adb_client_list, ADB_MSG_POST_RESET, NULL);
+ if (nret & NOTIFY_STOP_MASK)
+ return -EBUSY;
+
+ return ret;
+}
+
+void
+adb_poll(void)
+{
+ if ((adb_controller == NULL)||(adb_controller->poll == NULL))
+ return;
+ adb_controller->poll();
+}
+
+static void
+adb_probe_wakeup(struct adb_request *req)
+{
+ complete(&adb_probe_task_comp);
+}
+
+/* Static request used during probe */
+static struct adb_request adb_sreq;
+static unsigned long adb_sreq_lock; // Use semaphore ! */
+
+int
+adb_request(struct adb_request *req, void (*done)(struct adb_request *),
+ int flags, int nbytes, ...)
+{
+ va_list list;
+ int i, use_sreq;
+ int rc;
+
+ if ((adb_controller == NULL) || (adb_controller->send_request == NULL))
+ return -ENXIO;
+ if (nbytes < 1)
+ return -EINVAL;
+ if (req == NULL && (flags & ADBREQ_NOSEND))
+ return -EINVAL;
+
+ if (req == NULL) {
+ if (test_and_set_bit(0,&adb_sreq_lock)) {
+ printk("adb.c: Warning: contention on static request !\n");
+ return -EPERM;
+ }
+ req = &adb_sreq;
+ flags |= ADBREQ_SYNC;
+ use_sreq = 1;
+ } else
+ use_sreq = 0;
+ req->nbytes = nbytes+1;
+ req->done = done;
+ req->reply_expected = flags & ADBREQ_REPLY;
+ req->data[0] = ADB_PACKET;
+ va_start(list, nbytes);
+ for (i = 0; i < nbytes; ++i)
+ req->data[i+1] = va_arg(list, int);
+ va_end(list);
+
+ if (flags & ADBREQ_NOSEND)
+ return 0;
+
+ /* Synchronous requests send from the probe thread cause it to
+ * block. Beware that the "done" callback will be overriden !
+ */
+ if ((flags & ADBREQ_SYNC) &&
+ (current->pid && adb_probe_task_pid &&
+ adb_probe_task_pid == current->pid)) {
+ req->done = adb_probe_wakeup;
+ rc = adb_controller->send_request(req, 0);
+ if (rc || req->complete)
+ goto bail;
+ wait_for_completion(&adb_probe_task_comp);
+ rc = 0;
+ goto bail;
+ }
+
+ rc = adb_controller->send_request(req, flags & ADBREQ_SYNC);
+bail:
+ if (use_sreq)
+ clear_bit(0, &adb_sreq_lock);
+
+ return rc;
+}
+
+ /* Ultimately this should return the number of devices with
+ the given default id.
+ And it does it now ! Note: changed behaviour: This function
+ will now register if default_id _and_ handler_id both match
+ but handler_id can be left to 0 to match with default_id only.
+ When handler_id is set, this function will try to adjust
+ the handler_id id it doesn't match. */
+int
+adb_register(int default_id, int handler_id, struct adb_ids *ids,
+ void (*handler)(unsigned char *, int, struct pt_regs *, int))
+{
+ int i;
+
+ down(&adb_handler_sem);
+ ids->nids = 0;
+ for (i = 1; i < 16; i++) {
+ if ((adb_handler[i].original_address == default_id) &&
+ (!handler_id || (handler_id == adb_handler[i].handler_id) ||
+ try_handler_change(i, handler_id))) {
+ if (adb_handler[i].handler != 0) {
+ printk(KERN_ERR
+ "Two handlers for ADB device %d\n",
+ default_id);
+ continue;
+ }
+ write_lock_irq(&adb_handler_lock);
+ adb_handler[i].handler = handler;
+ write_unlock_irq(&adb_handler_lock);
+ ids->id[ids->nids++] = i;
+ }
+ }
+ up(&adb_handler_sem);
+ return ids->nids;
+}
+
+int
+adb_unregister(int index)
+{
+ int ret = -ENODEV;
+
+ down(&adb_handler_sem);
+ write_lock_irq(&adb_handler_lock);
+ if (adb_handler[index].handler) {
+ while(adb_handler[index].busy) {
+ write_unlock_irq(&adb_handler_lock);
+ yield();
+ write_lock_irq(&adb_handler_lock);
+ }
+ ret = 0;
+ adb_handler[index].handler = NULL;
+ }
+ write_unlock_irq(&adb_handler_lock);
+ up(&adb_handler_sem);
+ return ret;
+}
+
+void
+adb_input(unsigned char *buf, int nb, struct pt_regs *regs, int autopoll)
+{
+ int i, id;
+ static int dump_adb_input = 0;
+ unsigned long flags;
+
+ void (*handler)(unsigned char *, int, struct pt_regs *, int);
+
+ /* We skip keystrokes and mouse moves when the sleep process
+ * has been started. We stop autopoll, but this is another security
+ */
+ if (adb_got_sleep)
+ return;
+
+ id = buf[0] >> 4;
+ if (dump_adb_input) {
+ printk(KERN_INFO "adb packet: ");
+ for (i = 0; i < nb; ++i)
+ printk(" %x", buf[i]);
+ printk(", id = %d\n", id);
+ }
+ write_lock_irqsave(&adb_handler_lock, flags);
+ handler = adb_handler[id].handler;
+ if (handler != NULL)
+ adb_handler[id].busy = 1;
+ write_unlock_irqrestore(&adb_handler_lock, flags);
+ if (handler != NULL) {
+ (*handler)(buf, nb, regs, autopoll);
+ wmb();
+ adb_handler[id].busy = 0;
+ }
+
+}
+
+/* Try to change handler to new_id. Will return 1 if successful. */
+static int try_handler_change(int address, int new_id)
+{
+ struct adb_request req;
+
+ if (adb_handler[address].handler_id == new_id)
+ return 1;
+ adb_request(&req, NULL, ADBREQ_SYNC, 3,
+ ADB_WRITEREG(address, 3), address | 0x20, new_id);
+ adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
+ ADB_READREG(address, 3));
+ if (req.reply_len < 2)
+ return 0;
+ if (req.reply[2] != new_id)
+ return 0;
+ adb_handler[address].handler_id = req.reply[2];
+
+ return 1;
+}
+
+int
+adb_try_handler_change(int address, int new_id)
+{
+ int ret;
+
+ down(&adb_handler_sem);
+ ret = try_handler_change(address, new_id);
+ up(&adb_handler_sem);
+ return ret;
+}
+
+int
+adb_get_infos(int address, int *original_address, int *handler_id)
+{
+ down(&adb_handler_sem);
+ *original_address = adb_handler[address].original_address;
+ *handler_id = adb_handler[address].handler_id;
+ up(&adb_handler_sem);
+
+ return (*original_address != 0);
+}
+
+
+/*
+ * /dev/adb device driver.
+ */
+
+#define ADB_MAJOR 56 /* major number for /dev/adb */
+
+struct adbdev_state {
+ spinlock_t lock;
+ atomic_t n_pending;
+ struct adb_request *completed;
+ wait_queue_head_t wait_queue;
+ int inuse;
+};
+
+static void adb_write_done(struct adb_request *req)
+{
+ struct adbdev_state *state = (struct adbdev_state *) req->arg;
+ unsigned long flags;
+
+ if (!req->complete) {
+ req->reply_len = 0;
+ req->complete = 1;
+ }
+ spin_lock_irqsave(&state->lock, flags);
+ atomic_dec(&state->n_pending);
+ if (!state->inuse) {
+ kfree(req);
+ if (atomic_read(&state->n_pending) == 0) {
+ spin_unlock_irqrestore(&state->lock, flags);
+ kfree(state);
+ return;
+ }
+ } else {
+ struct adb_request **ap = &state->completed;
+ while (*ap != NULL)
+ ap = &(*ap)->next;
+ req->next = NULL;
+ *ap = req;
+ wake_up_interruptible(&state->wait_queue);
+ }
+ spin_unlock_irqrestore(&state->lock, flags);
+}
+
+static int
+do_adb_query(struct adb_request *req)
+{
+ int ret = -EINVAL;
+
+ switch(req->data[1])
+ {
+ case ADB_QUERY_GETDEVINFO:
+ if (req->nbytes < 3)
+ break;
+ down(&adb_handler_sem);
+ req->reply[0] = adb_handler[req->data[2]].original_address;
+ req->reply[1] = adb_handler[req->data[2]].handler_id;
+ up(&adb_handler_sem);
+ req->complete = 1;
+ req->reply_len = 2;
+ adb_write_done(req);
+ ret = 0;
+ break;
+ }
+ return ret;
+}
+
+static int adb_open(struct inode *inode, struct file *file)
+{
+ struct adbdev_state *state;
+
+ if (iminor(inode) > 0 || adb_controller == NULL)
+ return -ENXIO;
+ state = kmalloc(sizeof(struct adbdev_state), GFP_KERNEL);
+ if (state == 0)
+ return -ENOMEM;
+ file->private_data = state;
+ spin_lock_init(&state->lock);
+ atomic_set(&state->n_pending, 0);
+ state->completed = NULL;
+ init_waitqueue_head(&state->wait_queue);
+ state->inuse = 1;
+
+ return 0;
+}
+
+static int adb_release(struct inode *inode, struct file *file)
+{
+ struct adbdev_state *state = file->private_data;
+ unsigned long flags;
+
+ lock_kernel();
+ if (state) {
+ file->private_data = NULL;
+ spin_lock_irqsave(&state->lock, flags);
+ if (atomic_read(&state->n_pending) == 0
+ && state->completed == NULL) {
+ spin_unlock_irqrestore(&state->lock, flags);
+ kfree(state);
+ } else {
+ state->inuse = 0;
+ spin_unlock_irqrestore(&state->lock, flags);
+ }
+ }
+ unlock_kernel();
+ return 0;
+}
+
+static ssize_t adb_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ int ret = 0;
+ struct adbdev_state *state = file->private_data;
+ struct adb_request *req;
+ wait_queue_t wait = __WAITQUEUE_INITIALIZER(wait,current);
+ unsigned long flags;
+
+ if (count < 2)
+ return -EINVAL;
+ if (count > sizeof(req->reply))
+ count = sizeof(req->reply);
+ if (!access_ok(VERIFY_WRITE, buf, count))
+ return -EFAULT;
+
+ req = NULL;
+ spin_lock_irqsave(&state->lock, flags);
+ add_wait_queue(&state->wait_queue, &wait);
+ current->state = TASK_INTERRUPTIBLE;
+
+ for (;;) {
+ req = state->completed;
+ if (req != NULL)
+ state->completed = req->next;
+ else if (atomic_read(&state->n_pending) == 0)
+ ret = -EIO;
+ if (req != NULL || ret != 0)
+ break;
+
+ if (file->f_flags & O_NONBLOCK) {
+ ret = -EAGAIN;
+ break;
+ }
+ if (signal_pending(current)) {
+ ret = -ERESTARTSYS;
+ break;
+ }
+ spin_unlock_irqrestore(&state->lock, flags);
+ schedule();
+ spin_lock_irqsave(&state->lock, flags);
+ }
+
+ current->state = TASK_RUNNING;
+ remove_wait_queue(&state->wait_queue, &wait);
+ spin_unlock_irqrestore(&state->lock, flags);
+
+ if (ret)
+ return ret;
+
+ ret = req->reply_len;
+ if (ret > count)
+ ret = count;
+ if (ret > 0 && copy_to_user(buf, req->reply, ret))
+ ret = -EFAULT;
+
+ kfree(req);
+ return ret;
+}
+
+static ssize_t adb_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ int ret/*, i*/;
+ struct adbdev_state *state = file->private_data;
+ struct adb_request *req;
+
+ if (count < 2 || count > sizeof(req->data))
+ return -EINVAL;
+ if (adb_controller == NULL)
+ return -ENXIO;
+ if (!access_ok(VERIFY_READ, buf, count))
+ return -EFAULT;
+
+ req = (struct adb_request *) kmalloc(sizeof(struct adb_request),
+ GFP_KERNEL);
+ if (req == NULL)
+ return -ENOMEM;
+
+ req->nbytes = count;
+ req->done = adb_write_done;
+ req->arg = (void *) state;
+ req->complete = 0;
+
+ ret = -EFAULT;
+ if (copy_from_user(req->data, buf, count))
+ goto out;
+
+ atomic_inc(&state->n_pending);
+
+ /* If a probe is in progress or we are sleeping, wait for it to complete */
+ down(&adb_probe_mutex);
+
+ /* Queries are special requests sent to the ADB driver itself */
+ if (req->data[0] == ADB_QUERY) {
+ if (count > 1)
+ ret = do_adb_query(req);
+ else
+ ret = -EINVAL;
+ up(&adb_probe_mutex);
+ }
+ /* Special case for ADB_BUSRESET request, all others are sent to
+ the controller */
+ else if ((req->data[0] == ADB_PACKET)&&(count > 1)
+ &&(req->data[1] == ADB_BUSRESET)) {
+ ret = do_adb_reset_bus();
+ up(&adb_probe_mutex);
+ atomic_dec(&state->n_pending);
+ if (ret == 0)
+ ret = count;
+ goto out;
+ } else {
+ req->reply_expected = ((req->data[1] & 0xc) == 0xc);
+ if (adb_controller && adb_controller->send_request)
+ ret = adb_controller->send_request(req, 0);
+ else
+ ret = -ENXIO;
+ up(&adb_probe_mutex);
+ }
+
+ if (ret != 0) {
+ atomic_dec(&state->n_pending);
+ goto out;
+ }
+ return count;
+
+out:
+ kfree(req);
+ return ret;
+}
+
+static struct file_operations adb_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .read = adb_read,
+ .write = adb_write,
+ .open = adb_open,
+ .release = adb_release,
+};
+
+static void
+adbdev_init(void)
+{
+ if (register_chrdev(ADB_MAJOR, "adb", &adb_fops)) {
+ printk(KERN_ERR "adb: unable to get major %d\n", ADB_MAJOR);
+ return;
+ }
+
+ devfs_mk_cdev(MKDEV(ADB_MAJOR, 0), S_IFCHR | S_IRUSR | S_IWUSR, "adb");
+
+ adb_dev_class = class_simple_create(THIS_MODULE, "adb");
+ if (IS_ERR(adb_dev_class)) {
+ return;
+ }
+ class_simple_device_add(adb_dev_class, MKDEV(ADB_MAJOR, 0), NULL, "adb");
+}
diff --git a/drivers/macintosh/adbhid.c b/drivers/macintosh/adbhid.c
new file mode 100644
index 000000000000..8f93d01d8928
--- /dev/null
+++ b/drivers/macintosh/adbhid.c
@@ -0,0 +1,1177 @@
+/*
+ * drivers/input/adbhid.c
+ *
+ * ADB HID driver for Power Macintosh computers.
+ *
+ * Adapted from drivers/macintosh/mac_keyb.c by Franz Sirl.
+ * drivers/macintosh/mac_keyb.c was Copyright (C) 1996 Paul Mackerras
+ * with considerable contributions from Ben Herrenschmidt and others.
+ *
+ * Copyright (C) 2000 Franz Sirl.
+ *
+ * Adapted to ADB changes and support for more devices by
+ * Benjamin Herrenschmidt. Adapted from code in MkLinux
+ * and reworked.
+ *
+ * Supported devices:
+ *
+ * - Standard 1 button mouse
+ * - All standard Apple Extended protocol (handler ID 4)
+ * - mouseman and trackman mice & trackballs
+ * - PowerBook Trackpad (default setup: enable tapping)
+ * - MicroSpeed mouse & trackball (needs testing)
+ * - CH Products Trackball Pro (needs testing)
+ * - Contour Design (Contour Mouse)
+ * - Hunter digital (NoHandsMouse)
+ * - Kensignton TurboMouse 5 (needs testing)
+ * - Mouse Systems A3 mice and trackballs <aidan@kublai.com>
+ * - MacAlly 2-buttons mouse (needs testing) <pochini@denise.shiny.it>
+ *
+ * To do:
+ *
+ * Improve Kensington support.
+ * Split mouse/kbd
+ * Move to syfs
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/notifier.h>
+#include <linux/input.h>
+
+#include <linux/adb.h>
+#include <linux/cuda.h>
+#include <linux/pmu.h>
+
+#include <asm/machdep.h>
+#ifdef CONFIG_PPC_PMAC
+#include <asm/pmac_feature.h>
+#endif
+
+#ifdef CONFIG_PMAC_BACKLIGHT
+#include <asm/backlight.h>
+#endif
+
+MODULE_AUTHOR("Franz Sirl <Franz.Sirl-kernel@lauterbach.com>");
+
+#define KEYB_KEYREG 0 /* register # for key up/down data */
+#define KEYB_LEDREG 2 /* register # for leds on ADB keyboard */
+#define MOUSE_DATAREG 0 /* reg# for movement/button codes from mouse */
+
+static int adb_message_handler(struct notifier_block *, unsigned long, void *);
+static struct notifier_block adbhid_adb_notifier = {
+ .notifier_call = adb_message_handler,
+};
+
+/* Some special keys */
+#define ADB_KEY_DEL 0x33
+#define ADB_KEY_CMD 0x37
+#define ADB_KEY_CAPSLOCK 0x39
+#define ADB_KEY_FN 0x3f
+#define ADB_KEY_FWDEL 0x75
+#define ADB_KEY_POWER_OLD 0x7e
+#define ADB_KEY_POWER 0x7f
+
+u8 adb_to_linux_keycodes[128] = {
+ /* 0x00 */ KEY_A, /* 30 */
+ /* 0x01 */ KEY_S, /* 31 */
+ /* 0x02 */ KEY_D, /* 32 */
+ /* 0x03 */ KEY_F, /* 33 */
+ /* 0x04 */ KEY_H, /* 35 */
+ /* 0x05 */ KEY_G, /* 34 */
+ /* 0x06 */ KEY_Z, /* 44 */
+ /* 0x07 */ KEY_X, /* 45 */
+ /* 0x08 */ KEY_C, /* 46 */
+ /* 0x09 */ KEY_V, /* 47 */
+ /* 0x0a */ KEY_102ND, /* 86 */
+ /* 0x0b */ KEY_B, /* 48 */
+ /* 0x0c */ KEY_Q, /* 16 */
+ /* 0x0d */ KEY_W, /* 17 */
+ /* 0x0e */ KEY_E, /* 18 */
+ /* 0x0f */ KEY_R, /* 19 */
+ /* 0x10 */ KEY_Y, /* 21 */
+ /* 0x11 */ KEY_T, /* 20 */
+ /* 0x12 */ KEY_1, /* 2 */
+ /* 0x13 */ KEY_2, /* 3 */
+ /* 0x14 */ KEY_3, /* 4 */
+ /* 0x15 */ KEY_4, /* 5 */
+ /* 0x16 */ KEY_6, /* 7 */
+ /* 0x17 */ KEY_5, /* 6 */
+ /* 0x18 */ KEY_EQUAL, /* 13 */
+ /* 0x19 */ KEY_9, /* 10 */
+ /* 0x1a */ KEY_7, /* 8 */
+ /* 0x1b */ KEY_MINUS, /* 12 */
+ /* 0x1c */ KEY_8, /* 9 */
+ /* 0x1d */ KEY_0, /* 11 */
+ /* 0x1e */ KEY_RIGHTBRACE, /* 27 */
+ /* 0x1f */ KEY_O, /* 24 */
+ /* 0x20 */ KEY_U, /* 22 */
+ /* 0x21 */ KEY_LEFTBRACE, /* 26 */
+ /* 0x22 */ KEY_I, /* 23 */
+ /* 0x23 */ KEY_P, /* 25 */
+ /* 0x24 */ KEY_ENTER, /* 28 */
+ /* 0x25 */ KEY_L, /* 38 */
+ /* 0x26 */ KEY_J, /* 36 */
+ /* 0x27 */ KEY_APOSTROPHE, /* 40 */
+ /* 0x28 */ KEY_K, /* 37 */
+ /* 0x29 */ KEY_SEMICOLON, /* 39 */
+ /* 0x2a */ KEY_BACKSLASH, /* 43 */
+ /* 0x2b */ KEY_COMMA, /* 51 */
+ /* 0x2c */ KEY_SLASH, /* 53 */
+ /* 0x2d */ KEY_N, /* 49 */
+ /* 0x2e */ KEY_M, /* 50 */
+ /* 0x2f */ KEY_DOT, /* 52 */
+ /* 0x30 */ KEY_TAB, /* 15 */
+ /* 0x31 */ KEY_SPACE, /* 57 */
+ /* 0x32 */ KEY_GRAVE, /* 41 */
+ /* 0x33 */ KEY_BACKSPACE, /* 14 */
+ /* 0x34 */ KEY_KPENTER, /* 96 */
+ /* 0x35 */ KEY_ESC, /* 1 */
+ /* 0x36 */ KEY_LEFTCTRL, /* 29 */
+ /* 0x37 */ KEY_LEFTMETA, /* 125 */
+ /* 0x38 */ KEY_LEFTSHIFT, /* 42 */
+ /* 0x39 */ KEY_CAPSLOCK, /* 58 */
+ /* 0x3a */ KEY_LEFTALT, /* 56 */
+ /* 0x3b */ KEY_LEFT, /* 105 */
+ /* 0x3c */ KEY_RIGHT, /* 106 */
+ /* 0x3d */ KEY_DOWN, /* 108 */
+ /* 0x3e */ KEY_UP, /* 103 */
+ /* 0x3f */ 0,
+ /* 0x40 */ 0,
+ /* 0x41 */ KEY_KPDOT, /* 83 */
+ /* 0x42 */ 0,
+ /* 0x43 */ KEY_KPASTERISK, /* 55 */
+ /* 0x44 */ 0,
+ /* 0x45 */ KEY_KPPLUS, /* 78 */
+ /* 0x46 */ 0,
+ /* 0x47 */ KEY_NUMLOCK, /* 69 */
+ /* 0x48 */ 0,
+ /* 0x49 */ 0,
+ /* 0x4a */ 0,
+ /* 0x4b */ KEY_KPSLASH, /* 98 */
+ /* 0x4c */ KEY_KPENTER, /* 96 */
+ /* 0x4d */ 0,
+ /* 0x4e */ KEY_KPMINUS, /* 74 */
+ /* 0x4f */ 0,
+ /* 0x50 */ 0,
+ /* 0x51 */ KEY_KPEQUAL, /* 117 */
+ /* 0x52 */ KEY_KP0, /* 82 */
+ /* 0x53 */ KEY_KP1, /* 79 */
+ /* 0x54 */ KEY_KP2, /* 80 */
+ /* 0x55 */ KEY_KP3, /* 81 */
+ /* 0x56 */ KEY_KP4, /* 75 */
+ /* 0x57 */ KEY_KP5, /* 76 */
+ /* 0x58 */ KEY_KP6, /* 77 */
+ /* 0x59 */ KEY_KP7, /* 71 */
+ /* 0x5a */ 0,
+ /* 0x5b */ KEY_KP8, /* 72 */
+ /* 0x5c */ KEY_KP9, /* 73 */
+ /* 0x5d */ KEY_YEN, /* 124 */
+ /* 0x5e */ KEY_RO, /* 89 */
+ /* 0x5f */ KEY_KPCOMMA, /* 121 */
+ /* 0x60 */ KEY_F5, /* 63 */
+ /* 0x61 */ KEY_F6, /* 64 */
+ /* 0x62 */ KEY_F7, /* 65 */
+ /* 0x63 */ KEY_F3, /* 61 */
+ /* 0x64 */ KEY_F8, /* 66 */
+ /* 0x65 */ KEY_F9, /* 67 */
+ /* 0x66 */ KEY_HANJA, /* 123 */
+ /* 0x67 */ KEY_F11, /* 87 */
+ /* 0x68 */ KEY_HANGUEL, /* 122 */
+ /* 0x69 */ KEY_SYSRQ, /* 99 */
+ /* 0x6a */ 0,
+ /* 0x6b */ KEY_SCROLLLOCK, /* 70 */
+ /* 0x6c */ 0,
+ /* 0x6d */ KEY_F10, /* 68 */
+ /* 0x6e */ KEY_COMPOSE, /* 127 */
+ /* 0x6f */ KEY_F12, /* 88 */
+ /* 0x70 */ 0,
+ /* 0x71 */ KEY_PAUSE, /* 119 */
+ /* 0x72 */ KEY_INSERT, /* 110 */
+ /* 0x73 */ KEY_HOME, /* 102 */
+ /* 0x74 */ KEY_PAGEUP, /* 104 */
+ /* 0x75 */ KEY_DELETE, /* 111 */
+ /* 0x76 */ KEY_F4, /* 62 */
+ /* 0x77 */ KEY_END, /* 107 */
+ /* 0x78 */ KEY_F2, /* 60 */
+ /* 0x79 */ KEY_PAGEDOWN, /* 109 */
+ /* 0x7a */ KEY_F1, /* 59 */
+ /* 0x7b */ KEY_RIGHTSHIFT, /* 54 */
+ /* 0x7c */ KEY_RIGHTALT, /* 100 */
+ /* 0x7d */ KEY_RIGHTCTRL, /* 97 */
+ /* 0x7e */ KEY_RIGHTMETA, /* 126 */
+ /* 0x7f */ KEY_POWER, /* 116 */
+};
+
+struct adbhid {
+ struct input_dev input;
+ int id;
+ int default_id;
+ int original_handler_id;
+ int current_handler_id;
+ int mouse_kind;
+ unsigned char *keycode;
+ char name[64];
+ char phys[32];
+ int flags;
+};
+
+#define FLAG_FN_KEY_PRESSED 0x00000001
+#define FLAG_POWER_FROM_FN 0x00000002
+#define FLAG_EMU_FWDEL_DOWN 0x00000004
+
+static struct adbhid *adbhid[16];
+
+static void adbhid_probe(void);
+
+static void adbhid_input_keycode(int, int, int, struct pt_regs *);
+
+static void init_trackpad(int id);
+static void init_trackball(int id);
+static void init_turbomouse(int id);
+static void init_microspeed(int id);
+static void init_ms_a3(int id);
+
+static struct adb_ids keyboard_ids;
+static struct adb_ids mouse_ids;
+static struct adb_ids buttons_ids;
+
+#ifdef CONFIG_PMAC_BACKLIGHT
+/* Exported to via-pmu.c */
+int disable_kernel_backlight = 0;
+#endif /* CONFIG_PMAC_BACKLIGHT */
+
+/* Kind of keyboard, see Apple technote 1152 */
+#define ADB_KEYBOARD_UNKNOWN 0
+#define ADB_KEYBOARD_ANSI 0x0100
+#define ADB_KEYBOARD_ISO 0x0200
+#define ADB_KEYBOARD_JIS 0x0300
+
+/* Kind of mouse */
+#define ADBMOUSE_STANDARD_100 0 /* Standard 100cpi mouse (handler 1) */
+#define ADBMOUSE_STANDARD_200 1 /* Standard 200cpi mouse (handler 2) */
+#define ADBMOUSE_EXTENDED 2 /* Apple Extended mouse (handler 4) */
+#define ADBMOUSE_TRACKBALL 3 /* TrackBall (handler 4) */
+#define ADBMOUSE_TRACKPAD 4 /* Apple's PowerBook trackpad (handler 4) */
+#define ADBMOUSE_TURBOMOUSE5 5 /* Turbomouse 5 (previously req. mousehack) */
+#define ADBMOUSE_MICROSPEED 6 /* Microspeed mouse (&trackball ?), MacPoint */
+#define ADBMOUSE_TRACKBALLPRO 7 /* Trackball Pro (special buttons) */
+#define ADBMOUSE_MS_A3 8 /* Mouse systems A3 trackball (handler 3) */
+#define ADBMOUSE_MACALLY2 9 /* MacAlly 2-button mouse */
+
+static void
+adbhid_keyboard_input(unsigned char *data, int nb, struct pt_regs *regs, int apoll)
+{
+ int id = (data[0] >> 4) & 0x0f;
+
+ if (!adbhid[id]) {
+ printk(KERN_ERR "ADB HID on ID %d not yet registered, packet %#02x, %#02x, %#02x, %#02x\n",
+ id, data[0], data[1], data[2], data[3]);
+ return;
+ }
+
+ /* first check this is from register 0 */
+ if (nb != 3 || (data[0] & 3) != KEYB_KEYREG)
+ return; /* ignore it */
+ adbhid_input_keycode(id, data[1], 0, regs);
+ if (!(data[2] == 0xff || (data[2] == 0x7f && data[1] == 0x7f)))
+ adbhid_input_keycode(id, data[2], 0, regs);
+}
+
+static void
+adbhid_input_keycode(int id, int keycode, int repeat, struct pt_regs *regs)
+{
+ struct adbhid *ahid = adbhid[id];
+ int up_flag;
+
+ up_flag = (keycode & 0x80);
+ keycode &= 0x7f;
+
+ switch (keycode) {
+ case ADB_KEY_CAPSLOCK: /* Generate down/up events for CapsLock everytime. */
+ input_regs(&ahid->input, regs);
+ input_report_key(&ahid->input, KEY_CAPSLOCK, 1);
+ input_report_key(&ahid->input, KEY_CAPSLOCK, 0);
+ input_sync(&ahid->input);
+ return;
+#ifdef CONFIG_PPC_PMAC
+ case ADB_KEY_POWER_OLD: /* Power key on PBook 3400 needs remapping */
+ switch(pmac_call_feature(PMAC_FTR_GET_MB_INFO,
+ NULL, PMAC_MB_INFO_MODEL, 0)) {
+ case PMAC_TYPE_COMET:
+ case PMAC_TYPE_HOOPER:
+ case PMAC_TYPE_KANGA:
+ keycode = ADB_KEY_POWER;
+ }
+ break;
+ case ADB_KEY_POWER:
+ /* Fn + Command will produce a bogus "power" keycode */
+ if (ahid->flags & FLAG_FN_KEY_PRESSED) {
+ keycode = ADB_KEY_CMD;
+ if (up_flag)
+ ahid->flags &= ~FLAG_POWER_FROM_FN;
+ else
+ ahid->flags |= FLAG_POWER_FROM_FN;
+ } else if (ahid->flags & FLAG_POWER_FROM_FN) {
+ keycode = ADB_KEY_CMD;
+ ahid->flags &= ~FLAG_POWER_FROM_FN;
+ }
+ break;
+ case ADB_KEY_FN:
+ /* Keep track of the Fn key state */
+ if (up_flag) {
+ ahid->flags &= ~FLAG_FN_KEY_PRESSED;
+ /* Emulate Fn+delete = forward delete */
+ if (ahid->flags & FLAG_EMU_FWDEL_DOWN) {
+ ahid->flags &= ~FLAG_EMU_FWDEL_DOWN;
+ keycode = ADB_KEY_FWDEL;
+ break;
+ }
+ } else
+ ahid->flags |= FLAG_FN_KEY_PRESSED;
+ /* Swallow the key press */
+ return;
+ case ADB_KEY_DEL:
+ /* Emulate Fn+delete = forward delete */
+ if (ahid->flags & FLAG_FN_KEY_PRESSED) {
+ keycode = ADB_KEY_FWDEL;
+ if (up_flag)
+ ahid->flags &= ~FLAG_EMU_FWDEL_DOWN;
+ else
+ ahid->flags |= FLAG_EMU_FWDEL_DOWN;
+ }
+ break;
+#endif /* CONFIG_PPC_PMAC */
+ }
+
+ if (adbhid[id]->keycode[keycode]) {
+ input_regs(&adbhid[id]->input, regs);
+ input_report_key(&adbhid[id]->input,
+ adbhid[id]->keycode[keycode], !up_flag);
+ input_sync(&adbhid[id]->input);
+ } else
+ printk(KERN_INFO "Unhandled ADB key (scancode %#02x) %s.\n", keycode,
+ up_flag ? "released" : "pressed");
+
+}
+
+static void
+adbhid_mouse_input(unsigned char *data, int nb, struct pt_regs *regs, int autopoll)
+{
+ int id = (data[0] >> 4) & 0x0f;
+
+ if (!adbhid[id]) {
+ printk(KERN_ERR "ADB HID on ID %d not yet registered\n", id);
+ return;
+ }
+
+ /*
+ Handler 1 -- 100cpi original Apple mouse protocol.
+ Handler 2 -- 200cpi original Apple mouse protocol.
+
+ For Apple's standard one-button mouse protocol the data array will
+ contain the following values:
+
+ BITS COMMENTS
+ data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
+ data[1] = bxxx xxxx First button and x-axis motion.
+ data[2] = byyy yyyy Second button and y-axis motion.
+
+ Handler 4 -- Apple Extended mouse protocol.
+
+ For Apple's 3-button mouse protocol the data array will contain the
+ following values:
+
+ BITS COMMENTS
+ data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
+ data[1] = bxxx xxxx Left button and x-axis motion.
+ data[2] = byyy yyyy Second button and y-axis motion.
+ data[3] = byyy bxxx Third button and fourth button. Y is additional
+ high bits of y-axis motion. XY is additional
+ high bits of x-axis motion.
+
+ MacAlly 2-button mouse protocol.
+
+ For MacAlly 2-button mouse protocol the data array will contain the
+ following values:
+
+ BITS COMMENTS
+ data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
+ data[1] = bxxx xxxx Left button and x-axis motion.
+ data[2] = byyy yyyy Right button and y-axis motion.
+ data[3] = ???? ???? unknown
+ data[4] = ???? ???? unknown
+
+ */
+
+ /* If it's a trackpad, we alias the second button to the first.
+ NOTE: Apple sends an ADB flush command to the trackpad when
+ the first (the real) button is released. We could do
+ this here using async flush requests.
+ */
+ switch (adbhid[id]->mouse_kind)
+ {
+ case ADBMOUSE_TRACKPAD:
+ data[1] = (data[1] & 0x7f) | ((data[1] & data[2]) & 0x80);
+ data[2] = data[2] | 0x80;
+ break;
+ case ADBMOUSE_MICROSPEED:
+ data[1] = (data[1] & 0x7f) | ((data[3] & 0x01) << 7);
+ data[2] = (data[2] & 0x7f) | ((data[3] & 0x02) << 6);
+ data[3] = (data[3] & 0x77) | ((data[3] & 0x04) << 5)
+ | (data[3] & 0x08);
+ break;
+ case ADBMOUSE_TRACKBALLPRO:
+ data[1] = (data[1] & 0x7f) | (((data[3] & 0x04) << 5)
+ & ((data[3] & 0x08) << 4));
+ data[2] = (data[2] & 0x7f) | ((data[3] & 0x01) << 7);
+ data[3] = (data[3] & 0x77) | ((data[3] & 0x02) << 6);
+ break;
+ case ADBMOUSE_MS_A3:
+ data[1] = (data[1] & 0x7f) | ((data[3] & 0x01) << 7);
+ data[2] = (data[2] & 0x7f) | ((data[3] & 0x02) << 6);
+ data[3] = ((data[3] & 0x04) << 5);
+ break;
+ case ADBMOUSE_MACALLY2:
+ data[3] = (data[2] & 0x80) ? 0x80 : 0x00;
+ data[2] |= 0x80; /* Right button is mapped as button 3 */
+ nb=4;
+ break;
+ }
+
+ input_regs(&adbhid[id]->input, regs);
+
+ input_report_key(&adbhid[id]->input, BTN_LEFT, !((data[1] >> 7) & 1));
+ input_report_key(&adbhid[id]->input, BTN_MIDDLE, !((data[2] >> 7) & 1));
+
+ if (nb >= 4 && adbhid[id]->mouse_kind != ADBMOUSE_TRACKPAD)
+ input_report_key(&adbhid[id]->input, BTN_RIGHT, !((data[3] >> 7) & 1));
+
+ input_report_rel(&adbhid[id]->input, REL_X,
+ ((data[2]&0x7f) < 64 ? (data[2]&0x7f) : (data[2]&0x7f)-128 ));
+ input_report_rel(&adbhid[id]->input, REL_Y,
+ ((data[1]&0x7f) < 64 ? (data[1]&0x7f) : (data[1]&0x7f)-128 ));
+
+ input_sync(&adbhid[id]->input);
+}
+
+static void
+adbhid_buttons_input(unsigned char *data, int nb, struct pt_regs *regs, int autopoll)
+{
+ int id = (data[0] >> 4) & 0x0f;
+
+ if (!adbhid[id]) {
+ printk(KERN_ERR "ADB HID on ID %d not yet registered\n", id);
+ return;
+ }
+
+ input_regs(&adbhid[id]->input, regs);
+
+ switch (adbhid[id]->original_handler_id) {
+ default:
+ case 0x02: /* Adjustable keyboard button device */
+ {
+ int down = (data[1] == (data[1] & 0xf));
+
+ switch (data[1] & 0x0f) {
+ case 0x0: /* microphone */
+ input_report_key(&adbhid[id]->input, KEY_SOUND, down);
+ break;
+
+ case 0x1: /* mute */
+ input_report_key(&adbhid[id]->input, KEY_MUTE, down);
+ break;
+
+ case 0x2: /* volume decrease */
+ input_report_key(&adbhid[id]->input, KEY_VOLUMEDOWN, down);
+ break;
+
+ case 0x3: /* volume increase */
+ input_report_key(&adbhid[id]->input, KEY_VOLUMEUP, down);
+ break;
+
+ default:
+ printk(KERN_INFO "Unhandled ADB_MISC event %02x, %02x, %02x, %02x\n",
+ data[0], data[1], data[2], data[3]);
+ break;
+ }
+ }
+ break;
+
+ case 0x1f: /* Powerbook button device */
+ {
+ int down = (data[1] == (data[1] & 0xf));
+#ifdef CONFIG_PMAC_BACKLIGHT
+ int backlight = get_backlight_level();
+#endif
+ /*
+ * XXX: Where is the contrast control for the passive?
+ * -- Cort
+ */
+
+ switch (data[1] & 0x0f) {
+ case 0x8: /* mute */
+ input_report_key(&adbhid[id]->input, KEY_MUTE, down);
+ break;
+
+ case 0x7: /* volume decrease */
+ input_report_key(&adbhid[id]->input, KEY_VOLUMEDOWN, down);
+ break;
+
+ case 0x6: /* volume increase */
+ input_report_key(&adbhid[id]->input, KEY_VOLUMEUP, down);
+ break;
+
+ case 0xb: /* eject */
+ input_report_key(&adbhid[id]->input, KEY_EJECTCD, down);
+ break;
+
+ case 0xa: /* brightness decrease */
+#ifdef CONFIG_PMAC_BACKLIGHT
+ if (!disable_kernel_backlight) {
+ if (down && backlight >= 0) {
+ if (backlight > BACKLIGHT_OFF)
+ set_backlight_level(backlight-1);
+ else
+ set_backlight_level(BACKLIGHT_OFF);
+ }
+ }
+#endif /* CONFIG_PMAC_BACKLIGHT */
+ input_report_key(&adbhid[id]->input, KEY_BRIGHTNESSDOWN, down);
+ break;
+
+ case 0x9: /* brightness increase */
+#ifdef CONFIG_PMAC_BACKLIGHT
+ if (!disable_kernel_backlight) {
+ if (down && backlight >= 0) {
+ if (backlight < BACKLIGHT_MAX)
+ set_backlight_level(backlight+1);
+ else
+ set_backlight_level(BACKLIGHT_MAX);
+ }
+ }
+#endif /* CONFIG_PMAC_BACKLIGHT */
+ input_report_key(&adbhid[id]->input, KEY_BRIGHTNESSUP, down);
+ break;
+ }
+ }
+ break;
+ }
+
+ input_sync(&adbhid[id]->input);
+}
+
+static struct adb_request led_request;
+static int leds_pending[16];
+static int leds_req_pending;
+static int pending_devs[16];
+static int pending_led_start=0;
+static int pending_led_end=0;
+static DEFINE_SPINLOCK(leds_lock);
+
+static void leds_done(struct adb_request *req)
+{
+ int leds = 0, device = 0, pending = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&leds_lock, flags);
+
+ if (pending_led_start != pending_led_end) {
+ device = pending_devs[pending_led_start];
+ leds = leds_pending[device] & 0xff;
+ leds_pending[device] = 0;
+ pending_led_start++;
+ pending_led_start = (pending_led_start < 16) ? pending_led_start : 0;
+ pending = leds_req_pending;
+ } else
+ leds_req_pending = 0;
+ spin_unlock_irqrestore(&leds_lock, flags);
+ if (pending)
+ adb_request(&led_request, leds_done, 0, 3,
+ ADB_WRITEREG(device, KEYB_LEDREG), 0xff, ~leds);
+}
+
+static void real_leds(unsigned char leds, int device)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&leds_lock, flags);
+ if (!leds_req_pending) {
+ leds_req_pending = 1;
+ spin_unlock_irqrestore(&leds_lock, flags);
+ adb_request(&led_request, leds_done, 0, 3,
+ ADB_WRITEREG(device, KEYB_LEDREG), 0xff, ~leds);
+ return;
+ } else {
+ if (!(leds_pending[device] & 0x100)) {
+ pending_devs[pending_led_end] = device;
+ pending_led_end++;
+ pending_led_end = (pending_led_end < 16) ? pending_led_end : 0;
+ }
+ leds_pending[device] = leds | 0x100;
+ }
+ spin_unlock_irqrestore(&leds_lock, flags);
+}
+
+/*
+ * Event callback from the input module. Events that change the state of
+ * the hardware are processed here.
+ */
+static int adbhid_kbd_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
+{
+ struct adbhid *adbhid = dev->private;
+ unsigned char leds;
+
+ switch (type) {
+ case EV_LED:
+ leds = (test_bit(LED_SCROLLL, dev->led) ? 4 : 0)
+ | (test_bit(LED_NUML, dev->led) ? 1 : 0)
+ | (test_bit(LED_CAPSL, dev->led) ? 2 : 0);
+ real_leds(leds, adbhid->id);
+ return 0;
+ }
+
+ return -1;
+}
+
+static int
+adb_message_handler(struct notifier_block *this, unsigned long code, void *x)
+{
+ switch (code) {
+ case ADB_MSG_PRE_RESET:
+ case ADB_MSG_POWERDOWN:
+ /* Stop the repeat timer. Autopoll is already off at this point */
+ {
+ int i;
+ for (i = 1; i < 16; i++) {
+ if (adbhid[i])
+ del_timer_sync(&adbhid[i]->input.timer);
+ }
+ }
+
+ /* Stop pending led requests */
+ while(leds_req_pending)
+ adb_poll();
+ break;
+
+ case ADB_MSG_POST_RESET:
+ adbhid_probe();
+ break;
+ }
+ return NOTIFY_DONE;
+}
+
+static void
+adbhid_input_register(int id, int default_id, int original_handler_id,
+ int current_handler_id, int mouse_kind)
+{
+ int i;
+
+ if (adbhid[id]) {
+ printk(KERN_ERR "Trying to reregister ADB HID on ID %d\n", id);
+ return;
+ }
+
+ if (!(adbhid[id] = kmalloc(sizeof(struct adbhid), GFP_KERNEL)))
+ return;
+
+ memset(adbhid[id], 0, sizeof(struct adbhid));
+ sprintf(adbhid[id]->phys, "adb%d:%d.%02x/input", id, default_id, original_handler_id);
+
+ init_input_dev(&adbhid[id]->input);
+
+ adbhid[id]->id = default_id;
+ adbhid[id]->original_handler_id = original_handler_id;
+ adbhid[id]->current_handler_id = current_handler_id;
+ adbhid[id]->mouse_kind = mouse_kind;
+ adbhid[id]->flags = 0;
+ adbhid[id]->input.private = adbhid[id];
+ adbhid[id]->input.name = adbhid[id]->name;
+ adbhid[id]->input.phys = adbhid[id]->phys;
+ adbhid[id]->input.id.bustype = BUS_ADB;
+ adbhid[id]->input.id.vendor = 0x0001;
+ adbhid[id]->input.id.product = (id << 12) | (default_id << 8) | original_handler_id;
+ adbhid[id]->input.id.version = 0x0100;
+
+ switch (default_id) {
+ case ADB_KEYBOARD:
+ if (!(adbhid[id]->keycode = kmalloc(sizeof(adb_to_linux_keycodes), GFP_KERNEL))) {
+ kfree(adbhid[id]);
+ return;
+ }
+
+ sprintf(adbhid[id]->name, "ADB keyboard");
+
+ memcpy(adbhid[id]->keycode, adb_to_linux_keycodes, sizeof(adb_to_linux_keycodes));
+
+ printk(KERN_INFO "Detected ADB keyboard, type ");
+ switch (original_handler_id) {
+ default:
+ printk("<unknown>.\n");
+ adbhid[id]->input.id.version = ADB_KEYBOARD_UNKNOWN;
+ break;
+
+ case 0x01: case 0x02: case 0x03: case 0x06: case 0x08:
+ case 0x0C: case 0x10: case 0x18: case 0x1B: case 0x1C:
+ case 0xC0: case 0xC3: case 0xC6:
+ printk("ANSI.\n");
+ adbhid[id]->input.id.version = ADB_KEYBOARD_ANSI;
+ break;
+
+ case 0x04: case 0x05: case 0x07: case 0x09: case 0x0D:
+ case 0x11: case 0x14: case 0x19: case 0x1D: case 0xC1:
+ case 0xC4: case 0xC7:
+ printk("ISO, swapping keys.\n");
+ adbhid[id]->input.id.version = ADB_KEYBOARD_ISO;
+ i = adbhid[id]->keycode[10];
+ adbhid[id]->keycode[10] = adbhid[id]->keycode[50];
+ adbhid[id]->keycode[50] = i;
+ break;
+
+ case 0x12: case 0x15: case 0x16: case 0x17: case 0x1A:
+ case 0x1E: case 0xC2: case 0xC5: case 0xC8: case 0xC9:
+ printk("JIS.\n");
+ adbhid[id]->input.id.version = ADB_KEYBOARD_JIS;
+ break;
+ }
+
+ for (i = 0; i < 128; i++)
+ if (adbhid[id]->keycode[i])
+ set_bit(adbhid[id]->keycode[i], adbhid[id]->input.keybit);
+
+ adbhid[id]->input.evbit[0] = BIT(EV_KEY) | BIT(EV_LED) | BIT(EV_REP);
+ adbhid[id]->input.ledbit[0] = BIT(LED_SCROLLL) | BIT(LED_CAPSL) | BIT(LED_NUML);
+ adbhid[id]->input.event = adbhid_kbd_event;
+ adbhid[id]->input.keycodemax = 127;
+ adbhid[id]->input.keycodesize = 1;
+ break;
+
+ case ADB_MOUSE:
+ sprintf(adbhid[id]->name, "ADB mouse");
+
+ adbhid[id]->input.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
+ adbhid[id]->input.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
+ adbhid[id]->input.relbit[0] = BIT(REL_X) | BIT(REL_Y);
+ break;
+
+ case ADB_MISC:
+ switch (original_handler_id) {
+ case 0x02: /* Adjustable keyboard button device */
+ sprintf(adbhid[id]->name, "ADB adjustable keyboard buttons");
+ adbhid[id]->input.evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
+ set_bit(KEY_SOUND, adbhid[id]->input.keybit);
+ set_bit(KEY_MUTE, adbhid[id]->input.keybit);
+ set_bit(KEY_VOLUMEUP, adbhid[id]->input.keybit);
+ set_bit(KEY_VOLUMEDOWN, adbhid[id]->input.keybit);
+ break;
+ case 0x1f: /* Powerbook button device */
+ sprintf(adbhid[id]->name, "ADB Powerbook buttons");
+ adbhid[id]->input.evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
+ set_bit(KEY_MUTE, adbhid[id]->input.keybit);
+ set_bit(KEY_VOLUMEUP, adbhid[id]->input.keybit);
+ set_bit(KEY_VOLUMEDOWN, adbhid[id]->input.keybit);
+ set_bit(KEY_BRIGHTNESSUP, adbhid[id]->input.keybit);
+ set_bit(KEY_BRIGHTNESSDOWN, adbhid[id]->input.keybit);
+ set_bit(KEY_EJECTCD, adbhid[id]->input.keybit);
+ break;
+ }
+ if (adbhid[id]->name[0])
+ break;
+ /* else fall through */
+
+ default:
+ printk(KERN_INFO "Trying to register unknown ADB device to input layer.\n");
+ kfree(adbhid[id]);
+ return;
+ }
+
+ adbhid[id]->input.keycode = adbhid[id]->keycode;
+
+ input_register_device(&adbhid[id]->input);
+
+ printk(KERN_INFO "input: %s on %s\n",
+ adbhid[id]->name, adbhid[id]->phys);
+
+ if (default_id == ADB_KEYBOARD) {
+ /* HACK WARNING!! This should go away as soon there is an utility
+ * to control that for event devices.
+ */
+ adbhid[id]->input.rep[REP_DELAY] = 500; /* input layer default: 250 */
+ adbhid[id]->input.rep[REP_PERIOD] = 66; /* input layer default: 33 */
+ }
+}
+
+static void adbhid_input_unregister(int id)
+{
+ input_unregister_device(&adbhid[id]->input);
+ if (adbhid[id]->keycode)
+ kfree(adbhid[id]->keycode);
+ kfree(adbhid[id]);
+ adbhid[id] = NULL;
+}
+
+
+static u16
+adbhid_input_reregister(int id, int default_id, int org_handler_id,
+ int cur_handler_id, int mk)
+{
+ if (adbhid[id]) {
+ if (adbhid[id]->input.id.product !=
+ ((id << 12)|(default_id << 8)|org_handler_id)) {
+ adbhid_input_unregister(id);
+ adbhid_input_register(id, default_id, org_handler_id,
+ cur_handler_id, mk);
+ }
+ } else
+ adbhid_input_register(id, default_id, org_handler_id,
+ cur_handler_id, mk);
+ return 1<<id;
+}
+
+static void
+adbhid_input_devcleanup(u16 exist)
+{
+ int i;
+ for(i=1; i<16; i++)
+ if (adbhid[i] && !(exist&(1<<i)))
+ adbhid_input_unregister(i);
+}
+
+static void
+adbhid_probe(void)
+{
+ struct adb_request req;
+ int i, default_id, org_handler_id, cur_handler_id;
+ u16 reg = 0;
+
+ adb_register(ADB_MOUSE, 0, &mouse_ids, adbhid_mouse_input);
+ adb_register(ADB_KEYBOARD, 0, &keyboard_ids, adbhid_keyboard_input);
+ adb_register(ADB_MISC, 0, &buttons_ids, adbhid_buttons_input);
+
+ for (i = 0; i < keyboard_ids.nids; i++) {
+ int id = keyboard_ids.id[i];
+
+ adb_get_infos(id, &default_id, &org_handler_id);
+
+ /* turn off all leds */
+ adb_request(&req, NULL, ADBREQ_SYNC, 3,
+ ADB_WRITEREG(id, KEYB_LEDREG), 0xff, 0xff);
+
+ /* Enable full feature set of the keyboard
+ ->get it to send separate codes for left and right shift,
+ control, option keys */
+#if 0 /* handler 5 doesn't send separate codes for R modifiers */
+ if (adb_try_handler_change(id, 5))
+ printk("ADB keyboard at %d, handler set to 5\n", id);
+ else
+#endif
+ if (adb_try_handler_change(id, 3))
+ printk("ADB keyboard at %d, handler set to 3\n", id);
+ else
+ printk("ADB keyboard at %d, handler 1\n", id);
+
+ adb_get_infos(id, &default_id, &cur_handler_id);
+ reg |= adbhid_input_reregister(id, default_id, org_handler_id,
+ cur_handler_id, 0);
+ }
+
+ for (i = 0; i < buttons_ids.nids; i++) {
+ int id = buttons_ids.id[i];
+
+ adb_get_infos(id, &default_id, &org_handler_id);
+ reg |= adbhid_input_reregister(id, default_id, org_handler_id,
+ org_handler_id, 0);
+ }
+
+ /* Try to switch all mice to handler 4, or 2 for three-button
+ mode and full resolution. */
+ for (i = 0; i < mouse_ids.nids; i++) {
+ int id = mouse_ids.id[i];
+ int mouse_kind;
+
+ adb_get_infos(id, &default_id, &org_handler_id);
+
+ if (adb_try_handler_change(id, 4)) {
+ printk("ADB mouse at %d, handler set to 4", id);
+ mouse_kind = ADBMOUSE_EXTENDED;
+ }
+ else if (adb_try_handler_change(id, 0x2F)) {
+ printk("ADB mouse at %d, handler set to 0x2F", id);
+ mouse_kind = ADBMOUSE_MICROSPEED;
+ }
+ else if (adb_try_handler_change(id, 0x42)) {
+ printk("ADB mouse at %d, handler set to 0x42", id);
+ mouse_kind = ADBMOUSE_TRACKBALLPRO;
+ }
+ else if (adb_try_handler_change(id, 0x66)) {
+ printk("ADB mouse at %d, handler set to 0x66", id);
+ mouse_kind = ADBMOUSE_MICROSPEED;
+ }
+ else if (adb_try_handler_change(id, 0x5F)) {
+ printk("ADB mouse at %d, handler set to 0x5F", id);
+ mouse_kind = ADBMOUSE_MICROSPEED;
+ }
+ else if (adb_try_handler_change(id, 3)) {
+ printk("ADB mouse at %d, handler set to 3", id);
+ mouse_kind = ADBMOUSE_MS_A3;
+ }
+ else if (adb_try_handler_change(id, 2)) {
+ printk("ADB mouse at %d, handler set to 2", id);
+ mouse_kind = ADBMOUSE_STANDARD_200;
+ }
+ else {
+ printk("ADB mouse at %d, handler 1", id);
+ mouse_kind = ADBMOUSE_STANDARD_100;
+ }
+
+ if ((mouse_kind == ADBMOUSE_TRACKBALLPRO)
+ || (mouse_kind == ADBMOUSE_MICROSPEED)) {
+ init_microspeed(id);
+ } else if (mouse_kind == ADBMOUSE_MS_A3) {
+ init_ms_a3(id);
+ } else if (mouse_kind == ADBMOUSE_EXTENDED) {
+ /*
+ * Register 1 is usually used for device
+ * identification. Here, we try to identify
+ * a known device and call the appropriate
+ * init function.
+ */
+ adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
+ ADB_READREG(id, 1));
+
+ if ((req.reply_len) &&
+ (req.reply[1] == 0x9a) && ((req.reply[2] == 0x21)
+ || (req.reply[2] == 0x20))) {
+ mouse_kind = ADBMOUSE_TRACKBALL;
+ init_trackball(id);
+ }
+ else if ((req.reply_len >= 4) &&
+ (req.reply[1] == 0x74) && (req.reply[2] == 0x70) &&
+ (req.reply[3] == 0x61) && (req.reply[4] == 0x64)) {
+ mouse_kind = ADBMOUSE_TRACKPAD;
+ init_trackpad(id);
+ }
+ else if ((req.reply_len >= 4) &&
+ (req.reply[1] == 0x4b) && (req.reply[2] == 0x4d) &&
+ (req.reply[3] == 0x4c) && (req.reply[4] == 0x31)) {
+ mouse_kind = ADBMOUSE_TURBOMOUSE5;
+ init_turbomouse(id);
+ }
+ else if ((req.reply_len == 9) &&
+ (req.reply[1] == 0x4b) && (req.reply[2] == 0x4f) &&
+ (req.reply[3] == 0x49) && (req.reply[4] == 0x54)) {
+ if (adb_try_handler_change(id, 0x42)) {
+ printk("\nADB MacAlly 2-button mouse at %d, handler set to 0x42", id);
+ mouse_kind = ADBMOUSE_MACALLY2;
+ }
+ }
+ }
+ printk("\n");
+
+ adb_get_infos(id, &default_id, &cur_handler_id);
+ reg |= adbhid_input_reregister(id, default_id, org_handler_id,
+ cur_handler_id, mouse_kind);
+ }
+ adbhid_input_devcleanup(reg);
+}
+
+static void
+init_trackpad(int id)
+{
+ struct adb_request req;
+ unsigned char r1_buffer[8];
+
+ printk(" (trackpad)");
+
+ adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
+ ADB_READREG(id,1));
+ if (req.reply_len < 8)
+ printk("bad length for reg. 1\n");
+ else
+ {
+ memcpy(r1_buffer, &req.reply[1], 8);
+
+ adb_request(&req, NULL, ADBREQ_SYNC, 9,
+ ADB_WRITEREG(id,1),
+ r1_buffer[0],
+ r1_buffer[1],
+ r1_buffer[2],
+ r1_buffer[3],
+ r1_buffer[4],
+ r1_buffer[5],
+ 0x0d,
+ r1_buffer[7]);
+
+ adb_request(&req, NULL, ADBREQ_SYNC, 9,
+ ADB_WRITEREG(id,2),
+ 0x99,
+ 0x94,
+ 0x19,
+ 0xff,
+ 0xb2,
+ 0x8a,
+ 0x1b,
+ 0x50);
+
+ adb_request(&req, NULL, ADBREQ_SYNC, 9,
+ ADB_WRITEREG(id,1),
+ r1_buffer[0],
+ r1_buffer[1],
+ r1_buffer[2],
+ r1_buffer[3],
+ r1_buffer[4],
+ r1_buffer[5],
+ 0x03, /*r1_buffer[6],*/
+ r1_buffer[7]);
+
+ /* Without this flush, the trackpad may be locked up */
+ adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
+ }
+}
+
+static void
+init_trackball(int id)
+{
+ struct adb_request req;
+
+ printk(" (trackman/mouseman)");
+
+ adb_request(&req, NULL, ADBREQ_SYNC, 3,
+ ADB_WRITEREG(id,1), 00,0x81);
+
+ adb_request(&req, NULL, ADBREQ_SYNC, 3,
+ ADB_WRITEREG(id,1), 01,0x81);
+
+ adb_request(&req, NULL, ADBREQ_SYNC, 3,
+ ADB_WRITEREG(id,1), 02,0x81);
+
+ adb_request(&req, NULL, ADBREQ_SYNC, 3,
+ ADB_WRITEREG(id,1), 03,0x38);
+
+ adb_request(&req, NULL, ADBREQ_SYNC, 3,
+ ADB_WRITEREG(id,1), 00,0x81);
+
+ adb_request(&req, NULL, ADBREQ_SYNC, 3,
+ ADB_WRITEREG(id,1), 01,0x81);
+
+ adb_request(&req, NULL, ADBREQ_SYNC, 3,
+ ADB_WRITEREG(id,1), 02,0x81);
+
+ adb_request(&req, NULL, ADBREQ_SYNC, 3,
+ ADB_WRITEREG(id,1), 03,0x38);
+}
+
+static void
+init_turbomouse(int id)
+{
+ struct adb_request req;
+
+ printk(" (TurboMouse 5)");
+
+ adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
+
+ adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(3));
+
+ adb_request(&req, NULL, ADBREQ_SYNC, 9,
+ ADB_WRITEREG(3,2),
+ 0xe7,
+ 0x8c,
+ 0,
+ 0,
+ 0,
+ 0xff,
+ 0xff,
+ 0x94);
+
+ adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(3));
+
+ adb_request(&req, NULL, ADBREQ_SYNC, 9,
+ ADB_WRITEREG(3,2),
+ 0xa5,
+ 0x14,
+ 0,
+ 0,
+ 0x69,
+ 0xff,
+ 0xff,
+ 0x27);
+}
+
+static void
+init_microspeed(int id)
+{
+ struct adb_request req;
+
+ printk(" (Microspeed/MacPoint or compatible)");
+
+ adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
+
+ /* This will initialize mice using the Microspeed, MacPoint and
+ other compatible firmware. Bit 12 enables extended protocol.
+
+ Register 1 Listen (4 Bytes)
+ 0 - 3 Button is mouse (set also for double clicking!!!)
+ 4 - 7 Button is locking (affects change speed also)
+ 8 - 11 Button changes speed
+ 12 1 = Extended mouse mode, 0 = normal mouse mode
+ 13 - 15 unused 0
+ 16 - 23 normal speed
+ 24 - 31 changed speed
+
+ Register 1 talk holds version and product identification information.
+ Register 1 Talk (4 Bytes):
+ 0 - 7 Product code
+ 8 - 23 undefined, reserved
+ 24 - 31 Version number
+
+ Speed 0 is max. 1 to 255 set speed in increments of 1/256 of max.
+ */
+ adb_request(&req, NULL, ADBREQ_SYNC, 5,
+ ADB_WRITEREG(id,1),
+ 0x20, /* alt speed = 0x20 (rather slow) */
+ 0x00, /* norm speed = 0x00 (fastest) */
+ 0x10, /* extended protocol, no speed change */
+ 0x07); /* all buttons enabled as mouse buttons, no locking */
+
+
+ adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
+}
+
+static void
+init_ms_a3(int id)
+{
+ struct adb_request req;
+
+ printk(" (Mouse Systems A3 Mouse, or compatible)");
+ adb_request(&req, NULL, ADBREQ_SYNC, 3,
+ ADB_WRITEREG(id, 0x2),
+ 0x00,
+ 0x07);
+
+ adb_request(&req, NULL, ADBREQ_SYNC, 1, ADB_FLUSH(id));
+}
+
+static int __init adbhid_init(void)
+{
+#ifndef CONFIG_MAC
+ if ( (_machine != _MACH_chrp) && (_machine != _MACH_Pmac) )
+ return 0;
+#endif
+
+ led_request.complete = 1;
+
+ adbhid_probe();
+
+ notifier_chain_register(&adb_client_list, &adbhid_adb_notifier);
+
+ return 0;
+}
+
+static void __exit adbhid_exit(void)
+{
+}
+
+module_init(adbhid_init);
+module_exit(adbhid_exit);
diff --git a/drivers/macintosh/ans-lcd.c b/drivers/macintosh/ans-lcd.c
new file mode 100644
index 000000000000..5e0811dc6536
--- /dev/null
+++ b/drivers/macintosh/ans-lcd.c
@@ -0,0 +1,186 @@
+/*
+ * /dev/lcd driver for Apple Network Servers.
+ */
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/miscdevice.h>
+#include <linux/fcntl.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/fs.h>
+
+#include <asm/uaccess.h>
+#include <asm/sections.h>
+#include <asm/prom.h>
+#include <asm/ans-lcd.h>
+#include <asm/io.h>
+
+#define ANSLCD_ADDR 0xf301c000
+#define ANSLCD_CTRL_IX 0x00
+#define ANSLCD_DATA_IX 0x10
+
+static unsigned long anslcd_short_delay = 80;
+static unsigned long anslcd_long_delay = 3280;
+static volatile unsigned char __iomem *anslcd_ptr;
+
+#undef DEBUG
+
+static void __pmac
+anslcd_write_byte_ctrl ( unsigned char c )
+{
+#ifdef DEBUG
+ printk(KERN_DEBUG "LCD: CTRL byte: %02x\n",c);
+#endif
+ out_8(anslcd_ptr + ANSLCD_CTRL_IX, c);
+ switch(c) {
+ case 1:
+ case 2:
+ case 3:
+ udelay(anslcd_long_delay); break;
+ default: udelay(anslcd_short_delay);
+ }
+}
+
+static void __pmac
+anslcd_write_byte_data ( unsigned char c )
+{
+ out_8(anslcd_ptr + ANSLCD_DATA_IX, c);
+ udelay(anslcd_short_delay);
+}
+
+static ssize_t __pmac
+anslcd_write( struct file * file, const char __user * buf,
+ size_t count, loff_t *ppos )
+{
+ const char __user *p = buf;
+ int i;
+
+#ifdef DEBUG
+ printk(KERN_DEBUG "LCD: write\n");
+#endif
+
+ if (!access_ok(VERIFY_READ, buf, count))
+ return -EFAULT;
+ for ( i = *ppos; count > 0; ++i, ++p, --count )
+ {
+ char c;
+ __get_user(c, p);
+ anslcd_write_byte_data( c );
+ }
+ *ppos = i;
+ return p - buf;
+}
+
+static int __pmac
+anslcd_ioctl( struct inode * inode, struct file * file,
+ unsigned int cmd, unsigned long arg )
+{
+ char ch, __user *temp;
+
+#ifdef DEBUG
+ printk(KERN_DEBUG "LCD: ioctl(%d,%d)\n",cmd,arg);
+#endif
+
+ switch ( cmd )
+ {
+ case ANSLCD_CLEAR:
+ anslcd_write_byte_ctrl ( 0x38 );
+ anslcd_write_byte_ctrl ( 0x0f );
+ anslcd_write_byte_ctrl ( 0x06 );
+ anslcd_write_byte_ctrl ( 0x01 );
+ anslcd_write_byte_ctrl ( 0x02 );
+ return 0;
+ case ANSLCD_SENDCTRL:
+ temp = (char __user *) arg;
+ __get_user(ch, temp);
+ for (; ch; temp++) { /* FIXME: This is ugly, but should work, as a \0 byte is not a valid command code */
+ anslcd_write_byte_ctrl ( ch );
+ __get_user(ch, temp);
+ }
+ return 0;
+ case ANSLCD_SETSHORTDELAY:
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+ anslcd_short_delay=arg;
+ return 0;
+ case ANSLCD_SETLONGDELAY:
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+ anslcd_long_delay=arg;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int __pmac
+anslcd_open( struct inode * inode, struct file * file )
+{
+ return 0;
+}
+
+struct file_operations anslcd_fops = {
+ .write = anslcd_write,
+ .ioctl = anslcd_ioctl,
+ .open = anslcd_open,
+};
+
+static struct miscdevice anslcd_dev = {
+ ANSLCD_MINOR,
+ "anslcd",
+ &anslcd_fops
+};
+
+const char anslcd_logo[] = "********************" /* Line #1 */
+ "* LINUX! *" /* Line #3 */
+ "* Welcome to *" /* Line #2 */
+ "********************"; /* Line #4 */
+
+static int __init
+anslcd_init(void)
+{
+ int a;
+ int retval;
+ struct device_node* node;
+
+ node = find_devices("lcd");
+ if (!node || !node->parent)
+ return -ENODEV;
+ if (strcmp(node->parent->name, "gc"))
+ return -ENODEV;
+
+ anslcd_ptr = ioremap(ANSLCD_ADDR, 0x20);
+
+ retval = misc_register(&anslcd_dev);
+ if(retval < 0){
+ printk(KERN_INFO "LCD: misc_register failed\n");
+ iounmap(anslcd_ptr);
+ return retval;
+ }
+
+#ifdef DEBUG
+ printk(KERN_DEBUG "LCD: init\n");
+#endif
+
+ anslcd_write_byte_ctrl ( 0x38 );
+ anslcd_write_byte_ctrl ( 0x0c );
+ anslcd_write_byte_ctrl ( 0x06 );
+ anslcd_write_byte_ctrl ( 0x01 );
+ anslcd_write_byte_ctrl ( 0x02 );
+ for(a=0;a<80;a++) {
+ anslcd_write_byte_data(anslcd_logo[a]);
+ }
+ return 0;
+}
+
+static void __exit
+anslcd_exit(void)
+{
+ misc_deregister(&anslcd_dev);
+ iounmap(anslcd_ptr);
+}
+
+module_init(anslcd_init);
+module_exit(anslcd_exit);
diff --git a/drivers/macintosh/apm_emu.c b/drivers/macintosh/apm_emu.c
new file mode 100644
index 000000000000..19d3e05d6825
--- /dev/null
+++ b/drivers/macintosh/apm_emu.c
@@ -0,0 +1,553 @@
+/* APM emulation layer for PowerMac
+ *
+ * Copyright 2001 Benjamin Herrenschmidt (benh@kernel.crashing.org)
+ *
+ * Lots of code inherited from apm.c, see appropriate notice in
+ * arch/i386/kernel/apm.c
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+
+#include <linux/poll.h>
+#include <linux/types.h>
+#include <linux/stddef.h>
+#include <linux/timer.h>
+#include <linux/fcntl.h>
+#include <linux/slab.h>
+#include <linux/stat.h>
+#include <linux/proc_fs.h>
+#include <linux/miscdevice.h>
+#include <linux/apm_bios.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/pm.h>
+#include <linux/kernel.h>
+#include <linux/smp_lock.h>
+
+#include <linux/adb.h>
+#include <linux/pmu.h>
+
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include <asm/machdep.h>
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DBG(args...) printk(KERN_DEBUG args)
+//#define DBG(args...) xmon_printf(args)
+#else
+#define DBG(args...) do { } while (0)
+#endif
+
+/*
+ * The apm_bios device is one of the misc char devices.
+ * This is its minor number.
+ */
+#define APM_MINOR_DEV 134
+
+/*
+ * Maximum number of events stored
+ */
+#define APM_MAX_EVENTS 20
+
+#define FAKE_APM_BIOS_VERSION 0x0101
+
+#define APM_USER_NOTIFY_TIMEOUT (5*HZ)
+
+/*
+ * The per-file APM data
+ */
+struct apm_user {
+ int magic;
+ struct apm_user * next;
+ int suser: 1;
+ int suspend_waiting: 1;
+ int suspends_pending;
+ int suspends_read;
+ int event_head;
+ int event_tail;
+ apm_event_t events[APM_MAX_EVENTS];
+};
+
+/*
+ * The magic number in apm_user
+ */
+#define APM_BIOS_MAGIC 0x4101
+
+/*
+ * Local variables
+ */
+static int suspends_pending;
+
+static DECLARE_WAIT_QUEUE_HEAD(apm_waitqueue);
+static DECLARE_WAIT_QUEUE_HEAD(apm_suspend_waitqueue);
+static struct apm_user * user_list;
+
+static int apm_notify_sleep(struct pmu_sleep_notifier *self, int when);
+static struct pmu_sleep_notifier apm_sleep_notifier = {
+ apm_notify_sleep,
+ SLEEP_LEVEL_USERLAND,
+};
+
+static char driver_version[] = "0.5"; /* no spaces */
+
+#ifdef DEBUG
+static char * apm_event_name[] = {
+ "system standby",
+ "system suspend",
+ "normal resume",
+ "critical resume",
+ "low battery",
+ "power status change",
+ "update time",
+ "critical suspend",
+ "user standby",
+ "user suspend",
+ "system standby resume",
+ "capabilities change"
+};
+#define NR_APM_EVENT_NAME \
+ (sizeof(apm_event_name) / sizeof(apm_event_name[0]))
+
+#endif
+
+static int queue_empty(struct apm_user *as)
+{
+ return as->event_head == as->event_tail;
+}
+
+static apm_event_t get_queued_event(struct apm_user *as)
+{
+ as->event_tail = (as->event_tail + 1) % APM_MAX_EVENTS;
+ return as->events[as->event_tail];
+}
+
+static void queue_event(apm_event_t event, struct apm_user *sender)
+{
+ struct apm_user * as;
+
+ DBG("apm_emu: queue_event(%s)\n", apm_event_name[event-1]);
+ if (user_list == NULL)
+ return;
+ for (as = user_list; as != NULL; as = as->next) {
+ if (as == sender)
+ continue;
+ as->event_head = (as->event_head + 1) % APM_MAX_EVENTS;
+ if (as->event_head == as->event_tail) {
+ static int notified;
+
+ if (notified++ == 0)
+ printk(KERN_ERR "apm_emu: an event queue overflowed\n");
+ as->event_tail = (as->event_tail + 1) % APM_MAX_EVENTS;
+ }
+ as->events[as->event_head] = event;
+ if (!as->suser)
+ continue;
+ switch (event) {
+ case APM_SYS_SUSPEND:
+ case APM_USER_SUSPEND:
+ as->suspends_pending++;
+ suspends_pending++;
+ break;
+ case APM_NORMAL_RESUME:
+ as->suspend_waiting = 0;
+ break;
+ }
+ }
+ wake_up_interruptible(&apm_waitqueue);
+}
+
+static int check_apm_user(struct apm_user *as, const char *func)
+{
+ if ((as == NULL) || (as->magic != APM_BIOS_MAGIC)) {
+ printk(KERN_ERR "apm_emu: %s passed bad filp\n", func);
+ return 1;
+ }
+ return 0;
+}
+
+static ssize_t do_read(struct file *fp, char __user *buf, size_t count, loff_t *ppos)
+{
+ struct apm_user * as;
+ size_t i;
+ apm_event_t event;
+ DECLARE_WAITQUEUE(wait, current);
+
+ as = fp->private_data;
+ if (check_apm_user(as, "read"))
+ return -EIO;
+ if (count < sizeof(apm_event_t))
+ return -EINVAL;
+ if (queue_empty(as)) {
+ if (fp->f_flags & O_NONBLOCK)
+ return -EAGAIN;
+ add_wait_queue(&apm_waitqueue, &wait);
+repeat:
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (queue_empty(as) && !signal_pending(current)) {
+ schedule();
+ goto repeat;
+ }
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&apm_waitqueue, &wait);
+ }
+ i = count;
+ while ((i >= sizeof(event)) && !queue_empty(as)) {
+ event = get_queued_event(as);
+ DBG("apm_emu: do_read, returning: %s\n", apm_event_name[event-1]);
+ if (copy_to_user(buf, &event, sizeof(event))) {
+ if (i < count)
+ break;
+ return -EFAULT;
+ }
+ switch (event) {
+ case APM_SYS_SUSPEND:
+ case APM_USER_SUSPEND:
+ as->suspends_read++;
+ break;
+ }
+ buf += sizeof(event);
+ i -= sizeof(event);
+ }
+ if (i < count)
+ return count - i;
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+ return 0;
+}
+
+static unsigned int do_poll(struct file *fp, poll_table * wait)
+{
+ struct apm_user * as;
+
+ as = fp->private_data;
+ if (check_apm_user(as, "poll"))
+ return 0;
+ poll_wait(fp, &apm_waitqueue, wait);
+ if (!queue_empty(as))
+ return POLLIN | POLLRDNORM;
+ return 0;
+}
+
+static int do_ioctl(struct inode * inode, struct file *filp,
+ u_int cmd, u_long arg)
+{
+ struct apm_user * as;
+ DECLARE_WAITQUEUE(wait, current);
+
+ as = filp->private_data;
+ if (check_apm_user(as, "ioctl"))
+ return -EIO;
+ if (!as->suser)
+ return -EPERM;
+ switch (cmd) {
+ case APM_IOC_SUSPEND:
+ /* If a suspend message was sent to userland, we
+ * consider this as a confirmation message
+ */
+ if (as->suspends_read > 0) {
+ as->suspends_read--;
+ as->suspends_pending--;
+ suspends_pending--;
+ } else {
+ // Route to PMU suspend ?
+ break;
+ }
+ as->suspend_waiting = 1;
+ add_wait_queue(&apm_waitqueue, &wait);
+ DBG("apm_emu: ioctl waking up sleep waiter !\n");
+ wake_up(&apm_suspend_waitqueue);
+ mb();
+ while(as->suspend_waiting && !signal_pending(current)) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule();
+ }
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&apm_waitqueue, &wait);
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int do_release(struct inode * inode, struct file * filp)
+{
+ struct apm_user * as;
+
+ as = filp->private_data;
+ if (check_apm_user(as, "release"))
+ return 0;
+ filp->private_data = NULL;
+ lock_kernel();
+ if (as->suspends_pending > 0) {
+ suspends_pending -= as->suspends_pending;
+ if (suspends_pending <= 0)
+ wake_up(&apm_suspend_waitqueue);
+ }
+ if (user_list == as)
+ user_list = as->next;
+ else {
+ struct apm_user * as1;
+
+ for (as1 = user_list;
+ (as1 != NULL) && (as1->next != as);
+ as1 = as1->next)
+ ;
+ if (as1 == NULL)
+ printk(KERN_ERR "apm: filp not in user list\n");
+ else
+ as1->next = as->next;
+ }
+ unlock_kernel();
+ kfree(as);
+ return 0;
+}
+
+static int do_open(struct inode * inode, struct file * filp)
+{
+ struct apm_user * as;
+
+ as = (struct apm_user *)kmalloc(sizeof(*as), GFP_KERNEL);
+ if (as == NULL) {
+ printk(KERN_ERR "apm: cannot allocate struct of size %d bytes\n",
+ sizeof(*as));
+ return -ENOMEM;
+ }
+ as->magic = APM_BIOS_MAGIC;
+ as->event_tail = as->event_head = 0;
+ as->suspends_pending = 0;
+ as->suspends_read = 0;
+ /*
+ * XXX - this is a tiny bit broken, when we consider BSD
+ * process accounting. If the device is opened by root, we
+ * instantly flag that we used superuser privs. Who knows,
+ * we might close the device immediately without doing a
+ * privileged operation -- cevans
+ */
+ as->suser = capable(CAP_SYS_ADMIN);
+ as->next = user_list;
+ user_list = as;
+ filp->private_data = as;
+
+ DBG("apm_emu: opened by %s, suser: %d\n", current->comm, (int)as->suser);
+
+ return 0;
+}
+
+/* Wait for all clients to ack the suspend request. APM API
+ * doesn't provide a way to NAK, but this could be added
+ * here.
+ */
+static int wait_all_suspend(void)
+{
+ DECLARE_WAITQUEUE(wait, current);
+
+ add_wait_queue(&apm_suspend_waitqueue, &wait);
+ DBG("apm_emu: wait_all_suspend(), suspends_pending: %d\n", suspends_pending);
+ while(suspends_pending > 0) {
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule();
+ }
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&apm_suspend_waitqueue, &wait);
+
+ DBG("apm_emu: wait_all_suspend() - complete !\n");
+
+ return 1;
+}
+
+static int apm_notify_sleep(struct pmu_sleep_notifier *self, int when)
+{
+ switch(when) {
+ case PBOOK_SLEEP_REQUEST:
+ queue_event(APM_SYS_SUSPEND, NULL);
+ if (!wait_all_suspend())
+ return PBOOK_SLEEP_REFUSE;
+ break;
+ case PBOOK_SLEEP_REJECT:
+ case PBOOK_WAKE:
+ queue_event(APM_NORMAL_RESUME, NULL);
+ break;
+ }
+ return PBOOK_SLEEP_OK;
+}
+
+#define APM_CRITICAL 10
+#define APM_LOW 30
+
+static int apm_emu_get_info(char *buf, char **start, off_t fpos, int length)
+{
+ /* Arguments, with symbols from linux/apm_bios.h. Information is
+ from the Get Power Status (0x0a) call unless otherwise noted.
+
+ 0) Linux driver version (this will change if format changes)
+ 1) APM BIOS Version. Usually 1.0, 1.1 or 1.2.
+ 2) APM flags from APM Installation Check (0x00):
+ bit 0: APM_16_BIT_SUPPORT
+ bit 1: APM_32_BIT_SUPPORT
+ bit 2: APM_IDLE_SLOWS_CLOCK
+ bit 3: APM_BIOS_DISABLED
+ bit 4: APM_BIOS_DISENGAGED
+ 3) AC line status
+ 0x00: Off-line
+ 0x01: On-line
+ 0x02: On backup power (BIOS >= 1.1 only)
+ 0xff: Unknown
+ 4) Battery status
+ 0x00: High
+ 0x01: Low
+ 0x02: Critical
+ 0x03: Charging
+ 0x04: Selected battery not present (BIOS >= 1.2 only)
+ 0xff: Unknown
+ 5) Battery flag
+ bit 0: High
+ bit 1: Low
+ bit 2: Critical
+ bit 3: Charging
+ bit 7: No system battery
+ 0xff: Unknown
+ 6) Remaining battery life (percentage of charge):
+ 0-100: valid
+ -1: Unknown
+ 7) Remaining battery life (time units):
+ Number of remaining minutes or seconds
+ -1: Unknown
+ 8) min = minutes; sec = seconds */
+
+ unsigned short ac_line_status = 0xff;
+ unsigned short battery_status = 0xff;
+ unsigned short battery_flag = 0xff;
+ int percentage = -1;
+ int time_units = -1;
+ int real_count = 0;
+ int i;
+ char * p = buf;
+ char charging = 0;
+ long charge = -1;
+ long amperage = 0;
+ unsigned long btype = 0;
+
+ ac_line_status = ((pmu_power_flags & PMU_PWR_AC_PRESENT) != 0);
+ for (i=0; i<pmu_battery_count; i++) {
+ if (pmu_batteries[i].flags & PMU_BATT_PRESENT) {
+ if (percentage < 0)
+ percentage = 0;
+ if (charge < 0)
+ charge = 0;
+ percentage += (pmu_batteries[i].charge * 100) /
+ pmu_batteries[i].max_charge;
+ charge += pmu_batteries[i].charge;
+ amperage += pmu_batteries[i].amperage;
+ if (btype == 0)
+ btype = (pmu_batteries[i].flags & PMU_BATT_TYPE_MASK);
+ real_count++;
+ if ((pmu_batteries[i].flags & PMU_BATT_CHARGING))
+ charging++;
+ }
+ }
+ if (real_count) {
+ if (amperage < 0) {
+ if (btype == PMU_BATT_TYPE_SMART)
+ time_units = (charge * 59) / (amperage * -1);
+ else
+ time_units = (charge * 16440) / (amperage * -60);
+ }
+ percentage /= real_count;
+ if (charging > 0) {
+ battery_status = 0x03;
+ battery_flag = 0x08;
+ } else if (percentage <= APM_CRITICAL) {
+ battery_status = 0x02;
+ battery_flag = 0x04;
+ } else if (percentage <= APM_LOW) {
+ battery_status = 0x01;
+ battery_flag = 0x02;
+ } else {
+ battery_status = 0x00;
+ battery_flag = 0x01;
+ }
+ }
+ p += sprintf(p, "%s %d.%d 0x%02x 0x%02x 0x%02x 0x%02x %d%% %d %s\n",
+ driver_version,
+ (FAKE_APM_BIOS_VERSION >> 8) & 0xff,
+ FAKE_APM_BIOS_VERSION & 0xff,
+ 0,
+ ac_line_status,
+ battery_status,
+ battery_flag,
+ percentage,
+ time_units,
+ "min");
+
+ return p - buf;
+}
+
+static struct file_operations apm_bios_fops = {
+ .owner = THIS_MODULE,
+ .read = do_read,
+ .poll = do_poll,
+ .ioctl = do_ioctl,
+ .open = do_open,
+ .release = do_release,
+};
+
+static struct miscdevice apm_device = {
+ APM_MINOR_DEV,
+ "apm_bios",
+ &apm_bios_fops
+};
+
+static int __init apm_emu_init(void)
+{
+ struct proc_dir_entry *apm_proc;
+
+ if (sys_ctrler != SYS_CTRLER_PMU) {
+ printk(KERN_INFO "apm_emu: Requires a machine with a PMU.\n");
+ return -ENODEV;
+ }
+
+ apm_proc = create_proc_info_entry("apm", 0, NULL, apm_emu_get_info);
+ if (apm_proc)
+ apm_proc->owner = THIS_MODULE;
+
+ misc_register(&apm_device);
+
+ pmu_register_sleep_notifier(&apm_sleep_notifier);
+
+ printk(KERN_INFO "apm_emu: APM Emulation %s initialized.\n", driver_version);
+
+ return 0;
+}
+
+static void __exit apm_emu_exit(void)
+{
+ pmu_unregister_sleep_notifier(&apm_sleep_notifier);
+ misc_deregister(&apm_device);
+ remove_proc_entry("apm", NULL);
+
+ printk(KERN_INFO "apm_emu: APM Emulation removed.\n");
+}
+
+module_init(apm_emu_init);
+module_exit(apm_emu_exit);
+
+MODULE_AUTHOR("Benjamin Herrenschmidt");
+MODULE_DESCRIPTION("APM emulation layer for PowerMac");
+MODULE_LICENSE("GPL");
+
diff --git a/drivers/macintosh/mac_hid.c b/drivers/macintosh/mac_hid.c
new file mode 100644
index 000000000000..5ad3a5a9eb7f
--- /dev/null
+++ b/drivers/macintosh/mac_hid.c
@@ -0,0 +1,140 @@
+/*
+ * drivers/macintosh/mac_hid.c
+ *
+ * HID support stuff for Macintosh computers.
+ *
+ * Copyright (C) 2000 Franz Sirl.
+ *
+ * This file will soon be removed in favor of an uinput userspace tool.
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/proc_fs.h>
+#include <linux/sysctl.h>
+#include <linux/input.h>
+#include <linux/module.h>
+
+
+static struct input_dev emumousebtn;
+static void emumousebtn_input_register(void);
+static int mouse_emulate_buttons = 0;
+static int mouse_button2_keycode = KEY_RIGHTCTRL; /* right control key */
+static int mouse_button3_keycode = KEY_RIGHTALT; /* right option key */
+static int mouse_last_keycode = 0;
+
+#if defined(CONFIG_SYSCTL)
+/* file(s) in /proc/sys/dev/mac_hid */
+ctl_table mac_hid_files[] = {
+ {
+ .ctl_name = DEV_MAC_HID_MOUSE_BUTTON_EMULATION,
+ .procname = "mouse_button_emulation",
+ .data = &mouse_emulate_buttons,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .ctl_name = DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE,
+ .procname = "mouse_button2_keycode",
+ .data = &mouse_button2_keycode,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .ctl_name = DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE,
+ .procname = "mouse_button3_keycode",
+ .data = &mouse_button3_keycode,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ { .ctl_name = 0 }
+};
+
+/* dir in /proc/sys/dev */
+ctl_table mac_hid_dir[] = {
+ {
+ .ctl_name = DEV_MAC_HID,
+ .procname = "mac_hid",
+ .maxlen = 0,
+ .mode = 0555,
+ .child = mac_hid_files,
+ },
+ { .ctl_name = 0 }
+};
+
+/* /proc/sys/dev itself, in case that is not there yet */
+ctl_table mac_hid_root_dir[] = {
+ {
+ .ctl_name = CTL_DEV,
+ .procname = "dev",
+ .maxlen = 0,
+ .mode = 0555,
+ .child = mac_hid_dir,
+ },
+ { .ctl_name = 0 }
+};
+
+static struct ctl_table_header *mac_hid_sysctl_header;
+
+#endif /* endif CONFIG_SYSCTL */
+
+int mac_hid_mouse_emulate_buttons(int caller, unsigned int keycode, int down)
+{
+ switch (caller) {
+ case 1:
+ /* Called from keyboard.c */
+ if (mouse_emulate_buttons
+ && (keycode == mouse_button2_keycode
+ || keycode == mouse_button3_keycode)) {
+ if (mouse_emulate_buttons == 1) {
+ input_report_key(&emumousebtn,
+ keycode == mouse_button2_keycode ? BTN_MIDDLE : BTN_RIGHT,
+ down);
+ input_sync(&emumousebtn);
+ return 1;
+ }
+ mouse_last_keycode = down ? keycode : 0;
+ }
+ break;
+ }
+ return 0;
+}
+
+EXPORT_SYMBOL(mac_hid_mouse_emulate_buttons);
+
+static void emumousebtn_input_register(void)
+{
+ emumousebtn.name = "Macintosh mouse button emulation";
+
+ init_input_dev(&emumousebtn);
+
+ emumousebtn.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
+ emumousebtn.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
+ emumousebtn.relbit[0] = BIT(REL_X) | BIT(REL_Y);
+
+ emumousebtn.id.bustype = BUS_ADB;
+ emumousebtn.id.vendor = 0x0001;
+ emumousebtn.id.product = 0x0001;
+ emumousebtn.id.version = 0x0100;
+
+ input_register_device(&emumousebtn);
+
+ printk(KERN_INFO "input: Macintosh mouse button emulation\n");
+}
+
+int __init mac_hid_init(void)
+{
+
+ emumousebtn_input_register();
+
+#if defined(CONFIG_SYSCTL)
+ mac_hid_sysctl_header = register_sysctl_table(mac_hid_root_dir, 1);
+#endif /* CONFIG_SYSCTL */
+
+ return 0;
+}
+
+device_initcall(mac_hid_init);
diff --git a/drivers/macintosh/macio-adb.c b/drivers/macintosh/macio-adb.c
new file mode 100644
index 000000000000..cf6a6f2248ac
--- /dev/null
+++ b/drivers/macintosh/macio-adb.c
@@ -0,0 +1,284 @@
+/*
+ * Driver for the ADB controller in the Mac I/O (Hydra) chip.
+ */
+#include <stdarg.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+#include <asm/prom.h>
+#include <linux/adb.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/hydra.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <linux/init.h>
+
+struct preg {
+ unsigned char r;
+ char pad[15];
+};
+
+struct adb_regs {
+ struct preg intr;
+ struct preg data[9];
+ struct preg intr_enb;
+ struct preg dcount;
+ struct preg error;
+ struct preg ctrl;
+ struct preg autopoll;
+ struct preg active_hi;
+ struct preg active_lo;
+ struct preg test;
+};
+
+/* Bits in intr and intr_enb registers */
+#define DFB 1 /* data from bus */
+#define TAG 2 /* transfer access grant */
+
+/* Bits in dcount register */
+#define HMB 0x0f /* how many bytes */
+#define APD 0x10 /* auto-poll data */
+
+/* Bits in error register */
+#define NRE 1 /* no response error */
+#define DLE 2 /* data lost error */
+
+/* Bits in ctrl register */
+#define TAR 1 /* transfer access request */
+#define DTB 2 /* data to bus */
+#define CRE 4 /* command response expected */
+#define ADB_RST 8 /* ADB reset */
+
+/* Bits in autopoll register */
+#define APE 1 /* autopoll enable */
+
+static volatile struct adb_regs __iomem *adb;
+static struct adb_request *current_req, *last_req;
+static DEFINE_SPINLOCK(macio_lock);
+
+static int macio_probe(void);
+static int macio_init(void);
+static irqreturn_t macio_adb_interrupt(int irq, void *arg, struct pt_regs *regs);
+static int macio_send_request(struct adb_request *req, int sync);
+static int macio_adb_autopoll(int devs);
+static void macio_adb_poll(void);
+static int macio_adb_reset_bus(void);
+
+struct adb_driver macio_adb_driver = {
+ "MACIO",
+ macio_probe,
+ macio_init,
+ macio_send_request,
+ /*macio_write,*/
+ macio_adb_autopoll,
+ macio_adb_poll,
+ macio_adb_reset_bus
+};
+
+int macio_probe(void)
+{
+ return find_compatible_devices("adb", "chrp,adb0")? 0: -ENODEV;
+}
+
+int macio_init(void)
+{
+ struct device_node *adbs;
+
+ adbs = find_compatible_devices("adb", "chrp,adb0");
+ if (adbs == 0)
+ return -ENXIO;
+
+#if 0
+ { int i;
+
+ printk("macio_adb_init: node = %p, addrs =", adbs->node);
+ for (i = 0; i < adbs->n_addrs; ++i)
+ printk(" %x(%x)", adbs->addrs[i].address, adbs->addrs[i].size);
+ printk(", intrs =");
+ for (i = 0; i < adbs->n_intrs; ++i)
+ printk(" %x", adbs->intrs[i].line);
+ printk("\n"); }
+#endif
+
+ adb = ioremap(adbs->addrs->address, sizeof(struct adb_regs));
+
+ out_8(&adb->ctrl.r, 0);
+ out_8(&adb->intr.r, 0);
+ out_8(&adb->error.r, 0);
+ out_8(&adb->active_hi.r, 0xff); /* for now, set all devices active */
+ out_8(&adb->active_lo.r, 0xff);
+ out_8(&adb->autopoll.r, APE);
+
+ if (request_irq(adbs->intrs[0].line, macio_adb_interrupt,
+ 0, "ADB", (void *)0)) {
+ printk(KERN_ERR "ADB: can't get irq %d\n",
+ adbs->intrs[0].line);
+ return -EAGAIN;
+ }
+ out_8(&adb->intr_enb.r, DFB | TAG);
+
+ printk("adb: mac-io driver 1.0 for unified ADB\n");
+
+ return 0;
+}
+
+static int macio_adb_autopoll(int devs)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&macio_lock, flags);
+ out_8(&adb->active_hi.r, devs >> 8);
+ out_8(&adb->active_lo.r, devs);
+ out_8(&adb->autopoll.r, devs? APE: 0);
+ spin_unlock_irqrestore(&macio_lock, flags);
+ return 0;
+}
+
+static int macio_adb_reset_bus(void)
+{
+ unsigned long flags;
+ int timeout = 1000000;
+
+ /* Hrm... we may want to not lock interrupts for so
+ * long ... oh well, who uses that chip anyway ? :)
+ * That function will be seldomly used during boot
+ * on rare machines, so...
+ */
+ spin_lock_irqsave(&macio_lock, flags);
+ out_8(&adb->ctrl.r, in_8(&adb->ctrl.r) | ADB_RST);
+ while ((in_8(&adb->ctrl.r) & ADB_RST) != 0) {
+ if (--timeout == 0) {
+ out_8(&adb->ctrl.r, in_8(&adb->ctrl.r) & ~ADB_RST);
+ return -1;
+ }
+ }
+ spin_unlock_irqrestore(&macio_lock, flags);
+ return 0;
+}
+
+/* Send an ADB command */
+static int macio_send_request(struct adb_request *req, int sync)
+{
+ unsigned long flags;
+ int i;
+
+ if (req->data[0] != ADB_PACKET)
+ return -EINVAL;
+
+ for (i = 0; i < req->nbytes - 1; ++i)
+ req->data[i] = req->data[i+1];
+ --req->nbytes;
+
+ req->next = NULL;
+ req->sent = 0;
+ req->complete = 0;
+ req->reply_len = 0;
+
+ spin_lock_irqsave(&macio_lock, flags);
+ if (current_req != 0) {
+ last_req->next = req;
+ last_req = req;
+ } else {
+ current_req = last_req = req;
+ out_8(&adb->ctrl.r, in_8(&adb->ctrl.r) | TAR);
+ }
+ spin_unlock_irqrestore(&macio_lock, flags);
+
+ if (sync) {
+ while (!req->complete)
+ macio_adb_poll();
+ }
+
+ return 0;
+}
+
+static irqreturn_t macio_adb_interrupt(int irq, void *arg,
+ struct pt_regs *regs)
+{
+ int i, n, err;
+ struct adb_request *req = NULL;
+ unsigned char ibuf[16];
+ int ibuf_len = 0;
+ int complete = 0;
+ int autopoll = 0;
+ int handled = 0;
+
+ spin_lock(&macio_lock);
+ if (in_8(&adb->intr.r) & TAG) {
+ handled = 1;
+ if ((req = current_req) != 0) {
+ /* put the current request in */
+ for (i = 0; i < req->nbytes; ++i)
+ out_8(&adb->data[i].r, req->data[i]);
+ out_8(&adb->dcount.r, req->nbytes & HMB);
+ req->sent = 1;
+ if (req->reply_expected) {
+ out_8(&adb->ctrl.r, DTB + CRE);
+ } else {
+ out_8(&adb->ctrl.r, DTB);
+ current_req = req->next;
+ complete = 1;
+ if (current_req)
+ out_8(&adb->ctrl.r, in_8(&adb->ctrl.r) | TAR);
+ }
+ }
+ out_8(&adb->intr.r, 0);
+ }
+
+ if (in_8(&adb->intr.r) & DFB) {
+ handled = 1;
+ err = in_8(&adb->error.r);
+ if (current_req && current_req->sent) {
+ /* this is the response to a command */
+ req = current_req;
+ if (err == 0) {
+ req->reply_len = in_8(&adb->dcount.r) & HMB;
+ for (i = 0; i < req->reply_len; ++i)
+ req->reply[i] = in_8(&adb->data[i].r);
+ }
+ current_req = req->next;
+ complete = 1;
+ if (current_req)
+ out_8(&adb->ctrl.r, in_8(&adb->ctrl.r) | TAR);
+ } else if (err == 0) {
+ /* autopoll data */
+ n = in_8(&adb->dcount.r) & HMB;
+ for (i = 0; i < n; ++i)
+ ibuf[i] = in_8(&adb->data[i].r);
+ ibuf_len = n;
+ autopoll = (in_8(&adb->dcount.r) & APD) != 0;
+ }
+ out_8(&adb->error.r, 0);
+ out_8(&adb->intr.r, 0);
+ }
+ spin_unlock(&macio_lock);
+ if (complete && req) {
+ void (*done)(struct adb_request *) = req->done;
+ mb();
+ req->complete = 1;
+ /* Here, we assume that if the request has a done member, the
+ * struct request will survive to setting req->complete to 1
+ */
+ if (done)
+ (*done)(req);
+ }
+ if (ibuf_len)
+ adb_input(ibuf, ibuf_len, regs, autopoll);
+
+ return IRQ_RETVAL(handled);
+}
+
+static void macio_adb_poll(void)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ if (in_8(&adb->intr.r) != 0)
+ macio_adb_interrupt(0, NULL, NULL);
+ local_irq_restore(flags);
+}
diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c
new file mode 100644
index 000000000000..3a609ecd251b
--- /dev/null
+++ b/drivers/macintosh/macio_asic.c
@@ -0,0 +1,636 @@
+/*
+ * Bus & driver management routines for devices within
+ * a MacIO ASIC. Interface to new driver model mostly
+ * stolen from the PCI version.
+ *
+ * TODO:
+ *
+ * - Don't probe below media bay by default, but instead provide
+ * some hooks for media bay to dynamically add/remove it's own
+ * sub-devices.
+ */
+
+#include <linux/config.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/pci_ids.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <asm/machdep.h>
+#include <asm/macio.h>
+#include <asm/pmac_feature.h>
+#include <asm/prom.h>
+#include <asm/pci-bridge.h>
+
+#undef DEBUG
+
+#define MAX_NODE_NAME_SIZE (BUS_ID_SIZE - 12)
+
+static struct macio_chip *macio_on_hold;
+
+static int macio_bus_match(struct device *dev, struct device_driver *drv)
+{
+ struct macio_dev * macio_dev = to_macio_device(dev);
+ struct macio_driver * macio_drv = to_macio_driver(drv);
+ const struct of_match * matches = macio_drv->match_table;
+
+ if (!matches)
+ return 0;
+
+ return of_match_device(matches, &macio_dev->ofdev) != NULL;
+}
+
+struct macio_dev *macio_dev_get(struct macio_dev *dev)
+{
+ struct device *tmp;
+
+ if (!dev)
+ return NULL;
+ tmp = get_device(&dev->ofdev.dev);
+ if (tmp)
+ return to_macio_device(tmp);
+ else
+ return NULL;
+}
+
+void macio_dev_put(struct macio_dev *dev)
+{
+ if (dev)
+ put_device(&dev->ofdev.dev);
+}
+
+
+static int macio_device_probe(struct device *dev)
+{
+ int error = -ENODEV;
+ struct macio_driver *drv;
+ struct macio_dev *macio_dev;
+ const struct of_match *match;
+
+ drv = to_macio_driver(dev->driver);
+ macio_dev = to_macio_device(dev);
+
+ if (!drv->probe)
+ return error;
+
+ macio_dev_get(macio_dev);
+
+ match = of_match_device(drv->match_table, &macio_dev->ofdev);
+ if (match)
+ error = drv->probe(macio_dev, match);
+ if (error)
+ macio_dev_put(macio_dev);
+
+ return error;
+}
+
+static int macio_device_remove(struct device *dev)
+{
+ struct macio_dev * macio_dev = to_macio_device(dev);
+ struct macio_driver * drv = to_macio_driver(dev->driver);
+
+ if (dev->driver && drv->remove)
+ drv->remove(macio_dev);
+ macio_dev_put(macio_dev);
+
+ return 0;
+}
+
+static void macio_device_shutdown(struct device *dev)
+{
+ struct macio_dev * macio_dev = to_macio_device(dev);
+ struct macio_driver * drv = to_macio_driver(dev->driver);
+
+ if (dev->driver && drv->shutdown)
+ drv->shutdown(macio_dev);
+}
+
+static int macio_device_suspend(struct device *dev, u32 state)
+{
+ struct macio_dev * macio_dev = to_macio_device(dev);
+ struct macio_driver * drv = to_macio_driver(dev->driver);
+
+ if (dev->driver && drv->suspend)
+ return drv->suspend(macio_dev, state);
+ return 0;
+}
+
+static int macio_device_resume(struct device * dev)
+{
+ struct macio_dev * macio_dev = to_macio_device(dev);
+ struct macio_driver * drv = to_macio_driver(dev->driver);
+
+ if (dev->driver && drv->resume)
+ return drv->resume(macio_dev);
+ return 0;
+}
+
+struct bus_type macio_bus_type = {
+ .name = "macio",
+ .match = macio_bus_match,
+ .suspend = macio_device_suspend,
+ .resume = macio_device_resume,
+};
+
+static int __init macio_bus_driver_init(void)
+{
+ return bus_register(&macio_bus_type);
+}
+
+postcore_initcall(macio_bus_driver_init);
+
+
+/**
+ * macio_release_dev - free a macio device structure when all users of it are finished.
+ * @dev: device that's been disconnected
+ *
+ * Will be called only by the device core when all users of this macio device are
+ * done. This currently means never as we don't hot remove any macio device yet,
+ * though that will happen with mediabay based devices in a later implementation.
+ */
+static void macio_release_dev(struct device *dev)
+{
+ struct macio_dev *mdev;
+
+ mdev = to_macio_device(dev);
+ kfree(mdev);
+}
+
+/**
+ * macio_resource_quirks - tweak or skip some resources for a device
+ * @np: pointer to the device node
+ * @res: resulting resource
+ * @index: index of resource in node
+ *
+ * If this routine returns non-null, then the resource is completely
+ * skipped.
+ */
+static int macio_resource_quirks(struct device_node *np, struct resource *res, int index)
+{
+ if (res->flags & IORESOURCE_MEM) {
+ /* Grand Central has too large resource 0 on some machines */
+ if (index == 0 && !strcmp(np->name, "gc")) {
+ np->addrs[0].size = 0x20000;
+ res->end = res->start + 0x1ffff;
+ }
+ /* Airport has bogus resource 2 */
+ if (index >= 2 && !strcmp(np->name, "radio"))
+ return 1;
+ /* DBDMAs may have bogus sizes */
+ if ((res->start & 0x0001f000) == 0x00008000) {
+ np->addrs[index].size = 0x100;
+ res->end = res->start + 0xff;
+ }
+ /* ESCC parent eats child resources. We could have added a level of hierarchy,
+ * but I don't really feel the need for it */
+ if (!strcmp(np->name, "escc"))
+ return 1;
+ /* ESCC has bogus resources >= 3 */
+ if (index >= 3 && !(strcmp(np->name, "ch-a") && strcmp(np->name, "ch-b")))
+ return 1;
+ /* Media bay has too many resources, keep only first one */
+ if (index > 0 && !strcmp(np->name, "media-bay"))
+ return 1;
+ /* Some older IDE resources have bogus sizes */
+ if (!(strcmp(np->name, "IDE") && strcmp(np->name, "ATA") &&
+ strcmp(np->type, "ide") && strcmp(np->type, "ata"))) {
+ if (index == 0 && np->addrs[0].size > 0x1000) {
+ np->addrs[0].size = 0x1000;
+ res->end = res->start + 0xfff;
+ }
+ if (index == 1 && np->addrs[1].size > 0x100) {
+ np->addrs[1].size = 0x100;
+ res->end = res->start + 0xff;
+ }
+ }
+ }
+ return 0;
+}
+
+
+/**
+ * macio_add_one_device - Add one device from OF node to the device tree
+ * @chip: pointer to the macio_chip holding the device
+ * @np: pointer to the device node in the OF tree
+ * @in_bay: set to 1 if device is part of a media-bay
+ *
+ * When media-bay is changed to hotswap drivers, this function will
+ * be exposed to the bay driver some way...
+ */
+static struct macio_dev * macio_add_one_device(struct macio_chip *chip, struct device *parent,
+ struct device_node *np, struct macio_dev *in_bay,
+ struct resource *parent_res)
+{
+ struct macio_dev *dev;
+ int i, j;
+ u32 *reg;
+
+ if (np == NULL)
+ return NULL;
+
+ dev = kmalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return NULL;
+ memset(dev, 0, sizeof(*dev));
+
+ dev->bus = &chip->lbus;
+ dev->media_bay = in_bay;
+ dev->ofdev.node = np;
+ dev->ofdev.dma_mask = 0xffffffffUL;
+ dev->ofdev.dev.dma_mask = &dev->ofdev.dma_mask;
+ dev->ofdev.dev.parent = parent;
+ dev->ofdev.dev.bus = &macio_bus_type;
+ dev->ofdev.dev.release = macio_release_dev;
+
+#ifdef DEBUG
+ printk("preparing mdev @%p, ofdev @%p, dev @%p, kobj @%p\n",
+ dev, &dev->ofdev, &dev->ofdev.dev, &dev->ofdev.dev.kobj);
+#endif
+
+ /* MacIO itself has a different reg, we use it's PCI base */
+ if (np == chip->of_node) {
+ sprintf(dev->ofdev.dev.bus_id, "%1d.%08lx:%.*s", chip->lbus.index,
+#ifdef CONFIG_PCI
+ pci_resource_start(chip->lbus.pdev, 0),
+#else
+ 0, /* NuBus may want to do something better here */
+#endif
+ MAX_NODE_NAME_SIZE, np->name);
+ } else {
+ reg = (u32 *)get_property(np, "reg", NULL);
+ sprintf(dev->ofdev.dev.bus_id, "%1d.%08x:%.*s", chip->lbus.index,
+ reg ? *reg : 0, MAX_NODE_NAME_SIZE, np->name);
+ }
+
+ /* For now, we use pre-parsed entries in the device-tree for
+ * interrupt routing and addresses, but we should change that
+ * to dynamically parsed entries and so get rid of most of the
+ * clutter in struct device_node
+ */
+ for (i = j = 0; i < np->n_intrs; i++) {
+ struct resource *res = &dev->interrupt[j];
+
+ if (j >= MACIO_DEV_COUNT_IRQS)
+ break;
+ res->start = np->intrs[i].line;
+ res->flags = IORESOURCE_IO;
+ if (np->intrs[j].sense)
+ res->flags |= IORESOURCE_IRQ_LOWLEVEL;
+ else
+ res->flags |= IORESOURCE_IRQ_HIGHEDGE;
+ res->name = dev->ofdev.dev.bus_id;
+ if (macio_resource_quirks(np, res, i))
+ memset(res, 0, sizeof(struct resource));
+ else
+ j++;
+ }
+ dev->n_interrupts = j;
+ for (i = j = 0; i < np->n_addrs; i++) {
+ struct resource *res = &dev->resource[j];
+
+ if (j >= MACIO_DEV_COUNT_RESOURCES)
+ break;
+ res->start = np->addrs[i].address;
+ res->end = np->addrs[i].address + np->addrs[i].size - 1;
+ res->flags = IORESOURCE_MEM;
+ res->name = dev->ofdev.dev.bus_id;
+ if (macio_resource_quirks(np, res, i))
+ memset(res, 0, sizeof(struct resource));
+ else {
+ j++;
+ /* Currently, we consider failure as harmless, this may
+ * change in the future, once I've found all the device
+ * tree bugs in older machines & worked around them
+ */
+ if (insert_resource(parent_res, res))
+ printk(KERN_WARNING "Can't request resource %d for MacIO"
+ " device %s\n", i, dev->ofdev.dev.bus_id);
+ }
+ }
+ dev->n_resources = j;
+
+ if (of_device_register(&dev->ofdev) != 0) {
+ printk(KERN_DEBUG"macio: device registration error for %s!\n",
+ dev->ofdev.dev.bus_id);
+ kfree(dev);
+ return NULL;
+ }
+
+ return dev;
+}
+
+static int macio_skip_device(struct device_node *np)
+{
+ if (strncmp(np->name, "battery", 7) == 0)
+ return 1;
+ if (strncmp(np->name, "escc-legacy", 11) == 0)
+ return 1;
+ return 0;
+}
+
+/**
+ * macio_pci_add_devices - Adds sub-devices of mac-io to the device tree
+ * @chip: pointer to the macio_chip holding the devices
+ *
+ * This function will do the job of extracting devices from the
+ * Open Firmware device tree, build macio_dev structures and add
+ * them to the Linux device tree.
+ *
+ * For now, childs of media-bay are added now as well. This will
+ * change rsn though.
+ */
+static void macio_pci_add_devices(struct macio_chip *chip)
+{
+ struct device_node *np, *pnode;
+ struct macio_dev *rdev, *mdev, *mbdev = NULL, *sdev = NULL;
+ struct device *parent = NULL;
+ struct resource *root_res = &iomem_resource;
+
+ /* Add a node for the macio bus itself */
+#ifdef CONFIG_PCI
+ if (chip->lbus.pdev) {
+ parent = &chip->lbus.pdev->dev;
+ root_res = &chip->lbus.pdev->resource[0];
+ }
+#endif
+ pnode = of_node_get(chip->of_node);
+ if (pnode == NULL)
+ return;
+
+ /* Add macio itself to hierarchy */
+ rdev = macio_add_one_device(chip, parent, pnode, NULL, root_res);
+ if (rdev == NULL)
+ return;
+ root_res = &rdev->resource[0];
+
+ /* First scan 1st level */
+ for (np = NULL; (np = of_get_next_child(pnode, np)) != NULL;) {
+ if (!macio_skip_device(np)) {
+ of_node_get(np);
+ mdev = macio_add_one_device(chip, &rdev->ofdev.dev, np, NULL, root_res);
+ if (mdev == NULL)
+ of_node_put(np);
+ else if (strncmp(np->name, "media-bay", 9) == 0)
+ mbdev = mdev;
+ else if (strncmp(np->name, "escc", 4) == 0)
+ sdev = mdev;
+ }
+ }
+
+ /* Add media bay devices if any */
+ if (mbdev)
+ for (np = NULL; (np = of_get_next_child(mbdev->ofdev.node, np)) != NULL;)
+ if (!macio_skip_device(np)) {
+ of_node_get(np);
+ if (macio_add_one_device(chip, &mbdev->ofdev.dev, np, mbdev,
+ root_res) == NULL)
+ of_node_put(np);
+ }
+ /* Add serial ports if any */
+ if (sdev) {
+ for (np = NULL; (np = of_get_next_child(sdev->ofdev.node, np)) != NULL;)
+ if (!macio_skip_device(np)) {
+ of_node_get(np);
+ if (macio_add_one_device(chip, &sdev->ofdev.dev, np, NULL,
+ root_res) == NULL)
+ of_node_put(np);
+ }
+ }
+}
+
+
+/**
+ * macio_register_driver - Registers a new MacIO device driver
+ * @drv: pointer to the driver definition structure
+ */
+int macio_register_driver(struct macio_driver *drv)
+{
+ int count = 0;
+
+ /* initialize common driver fields */
+ drv->driver.name = drv->name;
+ drv->driver.bus = &macio_bus_type;
+ drv->driver.probe = macio_device_probe;
+ drv->driver.remove = macio_device_remove;
+ drv->driver.shutdown = macio_device_shutdown;
+
+ /* register with core */
+ count = driver_register(&drv->driver);
+ return count ? count : 1;
+}
+
+/**
+ * macio_unregister_driver - Unregisters a new MacIO device driver
+ * @drv: pointer to the driver definition structure
+ */
+void macio_unregister_driver(struct macio_driver *drv)
+{
+ driver_unregister(&drv->driver);
+}
+
+/**
+ * macio_request_resource - Request an MMIO resource
+ * @dev: pointer to the device holding the resource
+ * @resource_no: resource number to request
+ * @name: resource name
+ *
+ * Mark memory region number @resource_no associated with MacIO
+ * device @dev as being reserved by owner @name. Do not access
+ * any address inside the memory regions unless this call returns
+ * successfully.
+ *
+ * Returns 0 on success, or %EBUSY on error. A warning
+ * message is also printed on failure.
+ */
+int macio_request_resource(struct macio_dev *dev, int resource_no, const char *name)
+{
+ if (macio_resource_len(dev, resource_no) == 0)
+ return 0;
+
+ if (!request_mem_region(macio_resource_start(dev, resource_no),
+ macio_resource_len(dev, resource_no),
+ name))
+ goto err_out;
+
+ return 0;
+
+err_out:
+ printk (KERN_WARNING "MacIO: Unable to reserve resource #%d:%lx@%lx"
+ " for device %s\n",
+ resource_no,
+ macio_resource_len(dev, resource_no),
+ macio_resource_start(dev, resource_no),
+ dev->ofdev.dev.bus_id);
+ return -EBUSY;
+}
+
+/**
+ * macio_release_resource - Release an MMIO resource
+ * @dev: pointer to the device holding the resource
+ * @resource_no: resource number to release
+ */
+void macio_release_resource(struct macio_dev *dev, int resource_no)
+{
+ if (macio_resource_len(dev, resource_no) == 0)
+ return;
+ release_mem_region(macio_resource_start(dev, resource_no),
+ macio_resource_len(dev, resource_no));
+}
+
+/**
+ * macio_request_resources - Reserve all memory resources
+ * @dev: MacIO device whose resources are to be reserved
+ * @name: Name to be associated with resource.
+ *
+ * Mark all memory regions associated with MacIO device @dev as
+ * being reserved by owner @name. Do not access any address inside
+ * the memory regions unless this call returns successfully.
+ *
+ * Returns 0 on success, or %EBUSY on error. A warning
+ * message is also printed on failure.
+ */
+int macio_request_resources(struct macio_dev *dev, const char *name)
+{
+ int i;
+
+ for (i = 0; i < dev->n_resources; i++)
+ if (macio_request_resource(dev, i, name))
+ goto err_out;
+ return 0;
+
+err_out:
+ while(--i >= 0)
+ macio_release_resource(dev, i);
+
+ return -EBUSY;
+}
+
+/**
+ * macio_release_resources - Release reserved memory resources
+ * @dev: MacIO device whose resources were previously reserved
+ */
+
+void macio_release_resources(struct macio_dev *dev)
+{
+ int i;
+
+ for (i = 0; i < dev->n_resources; i++)
+ macio_release_resource(dev, i);
+}
+
+
+#ifdef CONFIG_PCI
+
+static int __devinit macio_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ struct device_node* np;
+ struct macio_chip* chip;
+
+ if (ent->vendor != PCI_VENDOR_ID_APPLE)
+ return -ENODEV;
+
+ /* Note regarding refcounting: We assume pci_device_to_OF_node() is ported
+ * to new OF APIs and returns a node with refcount incremented. This isn't
+ * the case today, but on the other hand ppc32 doesn't do refcounting. This
+ * will have to be fixed when going to ppc64. --BenH.
+ */
+ np = pci_device_to_OF_node(pdev);
+ if (np == NULL)
+ return -ENODEV;
+
+ /* This assumption is wrong, fix that here for now until I fix the arch */
+ of_node_get(np);
+
+ /* We also assume that pmac_feature will have done a get() on nodes stored
+ * in the macio chips array
+ */
+ chip = macio_find(np, macio_unknown);
+ of_node_put(np);
+ if (chip == NULL)
+ return -ENODEV;
+
+ /* XXX Need locking ??? */
+ if (chip->lbus.pdev == NULL) {
+ chip->lbus.pdev = pdev;
+ chip->lbus.chip = chip;
+ pci_set_drvdata(pdev, &chip->lbus);
+ pci_set_master(pdev);
+ }
+
+ printk(KERN_INFO "MacIO PCI driver attached to %s chipset\n",
+ chip->name);
+
+ /*
+ * HACK ALERT: The WallStreet PowerBook and some OHare based machines
+ * have 2 macio ASICs. I must probe the "main" one first or IDE ordering
+ * will be incorrect. So I put on "hold" the second one since it seem to
+ * appear first on PCI
+ */
+ if (chip->type == macio_gatwick || chip->type == macio_ohareII)
+ if (macio_chips[0].lbus.pdev == NULL) {
+ macio_on_hold = chip;
+ return 0;
+ }
+
+ macio_pci_add_devices(chip);
+ if (macio_on_hold && macio_chips[0].lbus.pdev != NULL) {
+ macio_pci_add_devices(macio_on_hold);
+ macio_on_hold = NULL;
+ }
+
+ return 0;
+}
+
+static void __devexit macio_pci_remove(struct pci_dev* pdev)
+{
+ panic("removing of macio-asic not supported !\n");
+}
+
+/*
+ * MacIO is matched against any Apple ID, it's probe() function
+ * will then decide wether it applies or not
+ */
+static const struct pci_device_id __devinitdata pci_ids [] = { {
+ .vendor = PCI_VENDOR_ID_APPLE,
+ .device = PCI_ANY_ID,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+
+ }, { /* end: all zeroes */ }
+};
+MODULE_DEVICE_TABLE (pci, pci_ids);
+
+/* pci driver glue; this is a "new style" PCI driver module */
+static struct pci_driver macio_pci_driver = {
+ .name = (char *) "macio",
+ .id_table = pci_ids,
+
+ .probe = macio_pci_probe,
+ .remove = macio_pci_remove,
+};
+
+#endif /* CONFIG_PCI */
+
+static int __init macio_module_init (void)
+{
+#ifdef CONFIG_PCI
+ int rc;
+
+ rc = pci_register_driver(&macio_pci_driver);
+ if (rc)
+ return rc;
+#endif /* CONFIG_PCI */
+ return 0;
+}
+
+module_init(macio_module_init);
+
+EXPORT_SYMBOL(macio_register_driver);
+EXPORT_SYMBOL(macio_unregister_driver);
+EXPORT_SYMBOL(macio_dev_get);
+EXPORT_SYMBOL(macio_dev_put);
+EXPORT_SYMBOL(macio_request_resource);
+EXPORT_SYMBOL(macio_release_resource);
+EXPORT_SYMBOL(macio_request_resources);
+EXPORT_SYMBOL(macio_release_resources);
diff --git a/drivers/macintosh/macserial.c b/drivers/macintosh/macserial.c
new file mode 100644
index 000000000000..0be3ac6cc169
--- /dev/null
+++ b/drivers/macintosh/macserial.c
@@ -0,0 +1,3036 @@
+/*
+ * macserial.c: Serial port driver for Power Macintoshes.
+ *
+ * Derived from drivers/sbus/char/sunserial.c by Paul Mackerras.
+ *
+ * Copyright (C) 1996 Paul Mackerras (Paul.Mackerras@cs.anu.edu.au)
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ *
+ * Receive DMA code by Takashi Oe <toe@unlserve.unl.edu>.
+ *
+ * $Id: macserial.c,v 1.24.2.4 1999/10/19 04:36:42 paulus Exp $
+ */
+
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/fcntl.h>
+#include <linux/mm.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#ifdef CONFIG_SERIAL_CONSOLE
+#include <linux/console.h>
+#endif
+#include <linux/slab.h>
+#include <linux/bitops.h>
+
+#include <asm/sections.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/irq.h>
+#include <asm/prom.h>
+#include <asm/system.h>
+#include <asm/segment.h>
+#include <asm/machdep.h>
+#include <asm/pmac_feature.h>
+#include <linux/adb.h>
+#include <linux/pmu.h>
+#ifdef CONFIG_KGDB
+#include <asm/kgdb.h>
+#endif
+#include <asm/dbdma.h>
+
+#include "macserial.h"
+
+#ifdef CONFIG_PMAC_PBOOK
+static int serial_notify_sleep(struct pmu_sleep_notifier *self, int when);
+static struct pmu_sleep_notifier serial_sleep_notifier = {
+ serial_notify_sleep,
+ SLEEP_LEVEL_MISC,
+};
+#endif
+
+#define SUPPORT_SERIAL_DMA
+#define MACSERIAL_VERSION "2.0"
+
+/*
+ * It would be nice to dynamically allocate everything that
+ * depends on NUM_SERIAL, so we could support any number of
+ * Z8530s, but for now...
+ */
+#define NUM_SERIAL 2 /* Max number of ZS chips supported */
+#define NUM_CHANNELS (NUM_SERIAL * 2) /* 2 channels per chip */
+
+/* On PowerMacs, the hardware takes care of the SCC recovery time,
+ but we need the eieio to make sure that the accesses occur
+ in the order we want. */
+#define RECOVERY_DELAY eieio()
+
+static struct tty_driver *serial_driver;
+
+struct mac_zschannel zs_channels[NUM_CHANNELS];
+
+struct mac_serial zs_soft[NUM_CHANNELS];
+int zs_channels_found;
+struct mac_serial *zs_chain; /* list of all channels */
+
+struct tty_struct zs_ttys[NUM_CHANNELS];
+
+static int is_powerbook;
+
+#ifdef CONFIG_SERIAL_CONSOLE
+static struct console sercons;
+#endif
+
+#ifdef CONFIG_KGDB
+struct mac_zschannel *zs_kgdbchan;
+static unsigned char scc_inittab[] = {
+ 9, 0x80, /* reset A side (CHRA) */
+ 13, 0, /* set baud rate divisor */
+ 12, 1,
+ 14, 1, /* baud rate gen enable, src=rtxc (BRENABL) */
+ 11, 0x50, /* clocks = br gen (RCBR | TCBR) */
+ 5, 0x6a, /* tx 8 bits, assert RTS (Tx8 | TxENAB | RTS) */
+ 4, 0x44, /* x16 clock, 1 stop (SB1 | X16CLK)*/
+ 3, 0xc1, /* rx enable, 8 bits (RxENABLE | Rx8)*/
+};
+#endif
+#define ZS_CLOCK 3686400 /* Z8530 RTxC input clock rate */
+
+/* serial subtype definitions */
+#define SERIAL_TYPE_NORMAL 1
+
+/* number of characters left in xmit buffer before we ask for more */
+#define WAKEUP_CHARS 256
+
+/*
+ * Debugging.
+ */
+#undef SERIAL_DEBUG_INTR
+#undef SERIAL_DEBUG_OPEN
+#undef SERIAL_DEBUG_FLOW
+#undef SERIAL_DEBUG_POWER
+#undef SERIAL_DEBUG_THROTTLE
+#undef SERIAL_DEBUG_STOP
+#undef SERIAL_DEBUG_BAUDS
+
+#define RS_STROBE_TIME 10
+#define RS_ISR_PASS_LIMIT 256
+
+#define _INLINE_ inline
+
+#ifdef SERIAL_DEBUG_OPEN
+#define OPNDBG(fmt, arg...) printk(KERN_DEBUG fmt , ## arg)
+#else
+#define OPNDBG(fmt, arg...) do { } while (0)
+#endif
+#ifdef SERIAL_DEBUG_POWER
+#define PWRDBG(fmt, arg...) printk(KERN_DEBUG fmt , ## arg)
+#else
+#define PWRDBG(fmt, arg...) do { } while (0)
+#endif
+#ifdef SERIAL_DEBUG_BAUDS
+#define BAUDBG(fmt, arg...) printk(fmt , ## arg)
+#else
+#define BAUDBG(fmt, arg...) do { } while (0)
+#endif
+
+static void probe_sccs(void);
+static void change_speed(struct mac_serial *info, struct termios *old);
+static void rs_wait_until_sent(struct tty_struct *tty, int timeout);
+static int set_scc_power(struct mac_serial * info, int state);
+static int setup_scc(struct mac_serial * info);
+static void dbdma_reset(volatile struct dbdma_regs *dma);
+static void dbdma_flush(volatile struct dbdma_regs *dma);
+static irqreturn_t rs_txdma_irq(int irq, void *dev_id, struct pt_regs *regs);
+static irqreturn_t rs_rxdma_irq(int irq, void *dev_id, struct pt_regs *regs);
+static void dma_init(struct mac_serial * info);
+static void rxdma_start(struct mac_serial * info, int curr);
+static void rxdma_to_tty(struct mac_serial * info);
+
+/*
+ * tmp_buf is used as a temporary buffer by serial_write. We need to
+ * lock it in case the copy_from_user blocks while swapping in a page,
+ * and some other program tries to do a serial write at the same time.
+ * Since the lock will only come under contention when the system is
+ * swapping and available memory is low, it makes sense to share one
+ * buffer across all the serial ports, since it significantly saves
+ * memory if large numbers of serial ports are open.
+ */
+static unsigned char *tmp_buf;
+static DECLARE_MUTEX(tmp_buf_sem);
+
+
+static inline int __pmac
+serial_paranoia_check(struct mac_serial *info,
+ char *name, const char *routine)
+{
+#ifdef SERIAL_PARANOIA_CHECK
+ static const char badmagic[] = KERN_WARNING
+ "Warning: bad magic number for serial struct %s in %s\n";
+ static const char badinfo[] = KERN_WARNING
+ "Warning: null mac_serial for %s in %s\n";
+
+ if (!info) {
+ printk(badinfo, name, routine);
+ return 1;
+ }
+ if (info->magic != SERIAL_MAGIC) {
+ printk(badmagic, name, routine);
+ return 1;
+ }
+#endif
+ return 0;
+}
+
+/*
+ * Reading and writing Z8530 registers.
+ */
+static inline unsigned char __pmac read_zsreg(struct mac_zschannel *channel,
+ unsigned char reg)
+{
+ unsigned char retval;
+ unsigned long flags;
+
+ /*
+ * We have to make this atomic.
+ */
+ spin_lock_irqsave(&channel->lock, flags);
+ if (reg != 0) {
+ *channel->control = reg;
+ RECOVERY_DELAY;
+ }
+ retval = *channel->control;
+ RECOVERY_DELAY;
+ spin_unlock_irqrestore(&channel->lock, flags);
+ return retval;
+}
+
+static inline void __pmac write_zsreg(struct mac_zschannel *channel,
+ unsigned char reg, unsigned char value)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&channel->lock, flags);
+ if (reg != 0) {
+ *channel->control = reg;
+ RECOVERY_DELAY;
+ }
+ *channel->control = value;
+ RECOVERY_DELAY;
+ spin_unlock_irqrestore(&channel->lock, flags);
+ return;
+}
+
+static inline unsigned char __pmac read_zsdata(struct mac_zschannel *channel)
+{
+ unsigned char retval;
+
+ retval = *channel->data;
+ RECOVERY_DELAY;
+ return retval;
+}
+
+static inline void write_zsdata(struct mac_zschannel *channel,
+ unsigned char value)
+{
+ *channel->data = value;
+ RECOVERY_DELAY;
+ return;
+}
+
+static inline void load_zsregs(struct mac_zschannel *channel,
+ unsigned char *regs)
+{
+ ZS_CLEARERR(channel);
+ ZS_CLEARFIFO(channel);
+ /* Load 'em up */
+ write_zsreg(channel, R4, regs[R4]);
+ write_zsreg(channel, R10, regs[R10]);
+ write_zsreg(channel, R3, regs[R3] & ~RxENABLE);
+ write_zsreg(channel, R5, regs[R5] & ~TxENAB);
+ write_zsreg(channel, R1, regs[R1]);
+ write_zsreg(channel, R9, regs[R9]);
+ write_zsreg(channel, R11, regs[R11]);
+ write_zsreg(channel, R12, regs[R12]);
+ write_zsreg(channel, R13, regs[R13]);
+ write_zsreg(channel, R14, regs[R14]);
+ write_zsreg(channel, R15, regs[R15]);
+ write_zsreg(channel, R3, regs[R3]);
+ write_zsreg(channel, R5, regs[R5]);
+ return;
+}
+
+/* Sets or clears DTR/RTS on the requested line */
+static inline void zs_rtsdtr(struct mac_serial *ss, int set)
+{
+ if (set)
+ ss->curregs[5] |= (RTS | DTR);
+ else
+ ss->curregs[5] &= ~(RTS | DTR);
+ write_zsreg(ss->zs_channel, 5, ss->curregs[5]);
+ return;
+}
+
+/* Utility routines for the Zilog */
+static inline int get_zsbaud(struct mac_serial *ss)
+{
+ struct mac_zschannel *channel = ss->zs_channel;
+ int brg;
+
+ if ((ss->curregs[R11] & TCBR) == 0) {
+ /* higher rates don't use the baud rate generator */
+ return (ss->curregs[R4] & X32CLK)? ZS_CLOCK/32: ZS_CLOCK/16;
+ }
+ /* The baud rate is split up between two 8-bit registers in
+ * what is termed 'BRG time constant' format in my docs for
+ * the chip, it is a function of the clk rate the chip is
+ * receiving which happens to be constant.
+ */
+ brg = (read_zsreg(channel, 13) << 8);
+ brg |= read_zsreg(channel, 12);
+ return BRG_TO_BPS(brg, (ZS_CLOCK/(ss->clk_divisor)));
+}
+
+/* On receive, this clears errors and the receiver interrupts */
+static inline void rs_recv_clear(struct mac_zschannel *zsc)
+{
+ write_zsreg(zsc, 0, ERR_RES);
+ write_zsreg(zsc, 0, RES_H_IUS); /* XXX this is unnecessary */
+}
+
+/*
+ * Reset a Descriptor-Based DMA channel.
+ */
+static void dbdma_reset(volatile struct dbdma_regs *dma)
+{
+ int i;
+
+ out_le32(&dma->control, (WAKE|FLUSH|PAUSE|RUN) << 16);
+
+ /*
+ * Yes this looks peculiar, but apparently it needs to be this
+ * way on some machines. (We need to make sure the DBDMA
+ * engine has actually got the write above and responded
+ * to it. - paulus)
+ */
+ for (i = 200; i > 0; --i)
+ if (ld_le32(&dma->status) & RUN)
+ udelay(1);
+}
+
+/*
+ * Tells a DBDMA channel to stop and write any buffered data
+ * it might have to memory.
+ */
+static _INLINE_ void dbdma_flush(volatile struct dbdma_regs *dma)
+{
+ int i = 0;
+
+ out_le32(&dma->control, (FLUSH << 16) | FLUSH);
+ while (((in_le32(&dma->status) & FLUSH) != 0) && (i++ < 100))
+ udelay(1);
+}
+
+/*
+ * ----------------------------------------------------------------------
+ *
+ * Here starts the interrupt handling routines. All of the following
+ * subroutines are declared as inline and are folded into
+ * rs_interrupt(). They were separated out for readability's sake.
+ *
+ * - Ted Ts'o (tytso@mit.edu), 7-Mar-93
+ * -----------------------------------------------------------------------
+ */
+
+/*
+ * This routine is used by the interrupt handler to schedule
+ * processing in the software interrupt portion of the driver.
+ */
+static _INLINE_ void rs_sched_event(struct mac_serial *info,
+ int event)
+{
+ info->event |= 1 << event;
+ schedule_work(&info->tqueue);
+}
+
+/* Work out the flag value for a z8530 status value. */
+static _INLINE_ int stat_to_flag(int stat)
+{
+ int flag;
+
+ if (stat & Rx_OVR) {
+ flag = TTY_OVERRUN;
+ } else if (stat & FRM_ERR) {
+ flag = TTY_FRAME;
+ } else if (stat & PAR_ERR) {
+ flag = TTY_PARITY;
+ } else
+ flag = 0;
+ return flag;
+}
+
+static _INLINE_ void receive_chars(struct mac_serial *info,
+ struct pt_regs *regs)
+{
+ struct tty_struct *tty = info->tty;
+ unsigned char ch, stat, flag;
+
+ while ((read_zsreg(info->zs_channel, 0) & Rx_CH_AV) != 0) {
+
+ stat = read_zsreg(info->zs_channel, R1);
+ ch = read_zsdata(info->zs_channel);
+
+#ifdef CONFIG_KGDB
+ if (info->kgdb_channel) {
+ if (ch == 0x03 || ch == '$')
+ breakpoint();
+ if (stat & (Rx_OVR|FRM_ERR|PAR_ERR))
+ write_zsreg(info->zs_channel, 0, ERR_RES);
+ return;
+ }
+#endif
+ if (!tty)
+ continue;
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE)
+ tty_flip_buffer_push(tty);
+
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
+ static int flip_buf_ovf;
+ if (++flip_buf_ovf <= 1)
+ printk(KERN_WARNING "FB. overflow: %d\n",
+ flip_buf_ovf);
+ break;
+ }
+ tty->flip.count++;
+ {
+ static int flip_max_cnt;
+ if (flip_max_cnt < tty->flip.count)
+ flip_max_cnt = tty->flip.count;
+ }
+ flag = stat_to_flag(stat);
+ if (flag)
+ /* reset the error indication */
+ write_zsreg(info->zs_channel, 0, ERR_RES);
+ *tty->flip.flag_buf_ptr++ = flag;
+ *tty->flip.char_buf_ptr++ = ch;
+ }
+ if (tty)
+ tty_flip_buffer_push(tty);
+}
+
+static void transmit_chars(struct mac_serial *info)
+{
+ if ((read_zsreg(info->zs_channel, 0) & Tx_BUF_EMP) == 0)
+ return;
+ info->tx_active = 0;
+
+ if (info->x_char && !info->power_wait) {
+ /* Send next char */
+ write_zsdata(info->zs_channel, info->x_char);
+ info->x_char = 0;
+ info->tx_active = 1;
+ return;
+ }
+
+ if ((info->xmit_cnt <= 0) || info->tty->stopped || info->tx_stopped
+ || info->power_wait) {
+ write_zsreg(info->zs_channel, 0, RES_Tx_P);
+ return;
+ }
+
+ /* Send char */
+ write_zsdata(info->zs_channel, info->xmit_buf[info->xmit_tail++]);
+ info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE-1);
+ info->xmit_cnt--;
+ info->tx_active = 1;
+
+ if (info->xmit_cnt < WAKEUP_CHARS)
+ rs_sched_event(info, RS_EVENT_WRITE_WAKEUP);
+}
+
+static void powerup_done(unsigned long data)
+{
+ struct mac_serial *info = (struct mac_serial *) data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&info->lock, flags);
+ info->power_wait = 0;
+ transmit_chars(info);
+ spin_unlock_irqrestore(&info->lock, flags);
+}
+
+static _INLINE_ void status_handle(struct mac_serial *info)
+{
+ unsigned char status;
+
+ /* Get status from Read Register 0 */
+ status = read_zsreg(info->zs_channel, 0);
+
+ /* Check for DCD transitions */
+ if (((status ^ info->read_reg_zero) & DCD) != 0
+ && info->tty && !C_CLOCAL(info->tty)) {
+ if (status & DCD) {
+ wake_up_interruptible(&info->open_wait);
+ } else {
+ if (info->tty)
+ tty_hangup(info->tty);
+ }
+ }
+
+ /* Check for CTS transitions */
+ if (info->tty && C_CRTSCTS(info->tty)) {
+ /*
+ * For some reason, on the Power Macintosh,
+ * it seems that the CTS bit is 1 when CTS is
+ * *negated* and 0 when it is asserted.
+ * The DCD bit doesn't seem to be inverted
+ * like this.
+ */
+ if ((status & CTS) == 0) {
+ if (info->tx_stopped) {
+#ifdef SERIAL_DEBUG_FLOW
+ printk(KERN_DEBUG "CTS up\n");
+#endif
+ info->tx_stopped = 0;
+ if (!info->tx_active)
+ transmit_chars(info);
+ }
+ } else {
+#ifdef SERIAL_DEBUG_FLOW
+ printk(KERN_DEBUG "CTS down\n");
+#endif
+ info->tx_stopped = 1;
+ }
+ }
+
+ /* Clear status condition... */
+ write_zsreg(info->zs_channel, 0, RES_EXT_INT);
+ info->read_reg_zero = status;
+}
+
+static _INLINE_ void receive_special_dma(struct mac_serial *info)
+{
+ unsigned char stat, flag;
+ volatile struct dbdma_regs *rd = &info->rx->dma;
+ int where = RX_BUF_SIZE;
+
+ spin_lock(&info->rx_dma_lock);
+ if ((ld_le32(&rd->status) & ACTIVE) != 0)
+ dbdma_flush(rd);
+ if (in_le32(&rd->cmdptr)
+ == virt_to_bus(info->rx_cmds[info->rx_cbuf] + 1))
+ where -= in_le16(&info->rx->res_count);
+ where--;
+
+ stat = read_zsreg(info->zs_channel, R1);
+
+ flag = stat_to_flag(stat);
+ if (flag) {
+ info->rx_flag_buf[info->rx_cbuf][where] = flag;
+ /* reset the error indication */
+ write_zsreg(info->zs_channel, 0, ERR_RES);
+ }
+
+ spin_unlock(&info->rx_dma_lock);
+}
+
+/*
+ * This is the serial driver's generic interrupt routine
+ */
+static irqreturn_t rs_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+{
+ struct mac_serial *info = (struct mac_serial *) dev_id;
+ unsigned char zs_intreg;
+ int shift;
+ unsigned long flags;
+ int handled = 0;
+
+ if (!(info->flags & ZILOG_INITIALIZED)) {
+ printk(KERN_WARNING "rs_interrupt: irq %d, port not "
+ "initialized\n", irq);
+ disable_irq(irq);
+ return IRQ_NONE;
+ }
+
+ /* NOTE: The read register 3, which holds the irq status,
+ * does so for both channels on each chip. Although
+ * the status value itself must be read from the A
+ * channel and is only valid when read from channel A.
+ * Yes... broken hardware...
+ */
+#define CHAN_IRQMASK (CHBRxIP | CHBTxIP | CHBEXT)
+
+ if (info->zs_chan_a == info->zs_channel)
+ shift = 3; /* Channel A */
+ else
+ shift = 0; /* Channel B */
+
+ spin_lock_irqsave(&info->lock, flags);
+ for (;;) {
+ zs_intreg = read_zsreg(info->zs_chan_a, 3) >> shift;
+#ifdef SERIAL_DEBUG_INTR
+ printk(KERN_DEBUG "rs_interrupt: irq %d, zs_intreg 0x%x\n",
+ irq, (int)zs_intreg);
+#endif
+
+ if ((zs_intreg & CHAN_IRQMASK) == 0)
+ break;
+ handled = 1;
+
+ if (zs_intreg & CHBRxIP) {
+ /* If we are doing DMA, we only ask for interrupts
+ on characters with errors or special conditions. */
+ if (info->dma_initted)
+ receive_special_dma(info);
+ else
+ receive_chars(info, regs);
+ }
+ if (zs_intreg & CHBTxIP)
+ transmit_chars(info);
+ if (zs_intreg & CHBEXT)
+ status_handle(info);
+ }
+ spin_unlock_irqrestore(&info->lock, flags);
+ return IRQ_RETVAL(handled);
+}
+
+/* Transmit DMA interrupt - not used at present */
+static irqreturn_t rs_txdma_irq(int irq, void *dev_id, struct pt_regs *regs)
+{
+ return IRQ_HANDLED;
+}
+
+/*
+ * Receive DMA interrupt.
+ */
+static irqreturn_t rs_rxdma_irq(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct mac_serial *info = (struct mac_serial *) dev_id;
+ volatile struct dbdma_cmd *cd;
+
+ if (!info->dma_initted)
+ return IRQ_NONE;
+ spin_lock(&info->rx_dma_lock);
+ /* First, confirm that this interrupt is, indeed, coming */
+ /* from Rx DMA */
+ cd = info->rx_cmds[info->rx_cbuf] + 2;
+ if ((in_le16(&cd->xfer_status) & (RUN | ACTIVE)) != (RUN | ACTIVE)) {
+ spin_unlock(&info->rx_dma_lock);
+ return IRQ_NONE;
+ }
+ if (info->rx_fbuf != RX_NO_FBUF) {
+ info->rx_cbuf = info->rx_fbuf;
+ if (++info->rx_fbuf == info->rx_nbuf)
+ info->rx_fbuf = 0;
+ if (info->rx_fbuf == info->rx_ubuf)
+ info->rx_fbuf = RX_NO_FBUF;
+ }
+ spin_unlock(&info->rx_dma_lock);
+ return IRQ_HANDLED;
+}
+
+/*
+ * -------------------------------------------------------------------
+ * Here ends the serial interrupt routines.
+ * -------------------------------------------------------------------
+ */
+
+/*
+ * ------------------------------------------------------------
+ * rs_stop() and rs_start()
+ *
+ * This routines are called before setting or resetting tty->stopped.
+ * ------------------------------------------------------------
+ */
+static void rs_stop(struct tty_struct *tty)
+{
+ struct mac_serial *info = (struct mac_serial *)tty->driver_data;
+
+#ifdef SERIAL_DEBUG_STOP
+ printk(KERN_DEBUG "rs_stop %ld....\n",
+ tty->ldisc.chars_in_buffer(tty));
+#endif
+
+ if (serial_paranoia_check(info, tty->name, "rs_stop"))
+ return;
+
+#if 0
+ spin_lock_irqsave(&info->lock, flags);
+ if (info->curregs[5] & TxENAB) {
+ info->curregs[5] &= ~TxENAB;
+ info->pendregs[5] &= ~TxENAB;
+ write_zsreg(info->zs_channel, 5, info->curregs[5]);
+ }
+ spin_unlock_irqrestore(&info->lock, flags);
+#endif
+}
+
+static void rs_start(struct tty_struct *tty)
+{
+ struct mac_serial *info = (struct mac_serial *)tty->driver_data;
+ unsigned long flags;
+
+#ifdef SERIAL_DEBUG_STOP
+ printk(KERN_DEBUG "rs_start %ld....\n",
+ tty->ldisc.chars_in_buffer(tty));
+#endif
+
+ if (serial_paranoia_check(info, tty->name, "rs_start"))
+ return;
+
+ spin_lock_irqsave(&info->lock, flags);
+#if 0
+ if (info->xmit_cnt && info->xmit_buf && !(info->curregs[5] & TxENAB)) {
+ info->curregs[5] |= TxENAB;
+ info->pendregs[5] = info->curregs[5];
+ write_zsreg(info->zs_channel, 5, info->curregs[5]);
+ }
+#else
+ if (info->xmit_cnt && info->xmit_buf && !info->tx_active) {
+ transmit_chars(info);
+ }
+#endif
+ spin_unlock_irqrestore(&info->lock, flags);
+}
+
+static void do_softint(void *private_)
+{
+ struct mac_serial *info = (struct mac_serial *) private_;
+ struct tty_struct *tty;
+
+ tty = info->tty;
+ if (!tty)
+ return;
+
+ if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event))
+ tty_wakeup(tty);
+}
+
+static int startup(struct mac_serial * info)
+{
+ int delay;
+
+ OPNDBG("startup() (ttyS%d, irq %d)\n", info->line, info->irq);
+
+ if (info->flags & ZILOG_INITIALIZED) {
+ OPNDBG(" -> already inited\n");
+ return 0;
+ }
+
+ if (!info->xmit_buf) {
+ info->xmit_buf = (unsigned char *) get_zeroed_page(GFP_KERNEL);
+ if (!info->xmit_buf)
+ return -ENOMEM;
+ }
+
+ OPNDBG("starting up ttyS%d (irq %d)...\n", info->line, info->irq);
+
+ delay = set_scc_power(info, 1);
+
+ setup_scc(info);
+
+ if (delay) {
+ unsigned long flags;
+
+ /* delay is in ms */
+ spin_lock_irqsave(&info->lock, flags);
+ info->power_wait = 1;
+ mod_timer(&info->powerup_timer,
+ jiffies + (delay * HZ + 999) / 1000);
+ spin_unlock_irqrestore(&info->lock, flags);
+ }
+
+ OPNDBG("enabling IRQ on ttyS%d (irq %d)...\n", info->line, info->irq);
+
+ info->flags |= ZILOG_INITIALIZED;
+ enable_irq(info->irq);
+ if (info->dma_initted) {
+ enable_irq(info->rx_dma_irq);
+ }
+
+ return 0;
+}
+
+static _INLINE_ void rxdma_start(struct mac_serial * info, int curr)
+{
+ volatile struct dbdma_regs *rd = &info->rx->dma;
+ volatile struct dbdma_cmd *cd = info->rx_cmds[curr];
+
+//printk(KERN_DEBUG "SCC: rxdma_start\n");
+
+ st_le32(&rd->cmdptr, virt_to_bus(cd));
+ out_le32(&rd->control, (RUN << 16) | RUN);
+}
+
+static void rxdma_to_tty(struct mac_serial *info)
+{
+ struct tty_struct *tty = info->tty;
+ volatile struct dbdma_regs *rd = &info->rx->dma;
+ unsigned long flags;
+ int residue, available, space, do_queue;
+
+ if (!tty)
+ return;
+
+ do_queue = 0;
+ spin_lock_irqsave(&info->rx_dma_lock, flags);
+more:
+ space = TTY_FLIPBUF_SIZE - tty->flip.count;
+ if (!space) {
+ do_queue++;
+ goto out;
+ }
+ residue = 0;
+ if (info->rx_ubuf == info->rx_cbuf) {
+ if ((ld_le32(&rd->status) & ACTIVE) != 0) {
+ dbdma_flush(rd);
+ if (in_le32(&rd->cmdptr)
+ == virt_to_bus(info->rx_cmds[info->rx_cbuf]+1))
+ residue = in_le16(&info->rx->res_count);
+ }
+ }
+ available = RX_BUF_SIZE - residue - info->rx_done_bytes;
+ if (available > space)
+ available = space;
+ if (available) {
+ memcpy(tty->flip.char_buf_ptr,
+ info->rx_char_buf[info->rx_ubuf] + info->rx_done_bytes,
+ available);
+ memcpy(tty->flip.flag_buf_ptr,
+ info->rx_flag_buf[info->rx_ubuf] + info->rx_done_bytes,
+ available);
+ tty->flip.char_buf_ptr += available;
+ tty->flip.count += available;
+ tty->flip.flag_buf_ptr += available;
+ memset(info->rx_flag_buf[info->rx_ubuf] + info->rx_done_bytes,
+ 0, available);
+ info->rx_done_bytes += available;
+ do_queue++;
+ }
+ if (info->rx_done_bytes == RX_BUF_SIZE) {
+ volatile struct dbdma_cmd *cd = info->rx_cmds[info->rx_ubuf];
+
+ if (info->rx_ubuf == info->rx_cbuf)
+ goto out;
+ /* mark rx_char_buf[rx_ubuf] free */
+ st_le16(&cd->command, DBDMA_NOP);
+ cd++;
+ st_le32(&cd->cmd_dep, 0);
+ st_le32((unsigned int *)&cd->res_count, 0);
+ cd++;
+ st_le16(&cd->xfer_status, 0);
+
+ if (info->rx_fbuf == RX_NO_FBUF) {
+ info->rx_fbuf = info->rx_ubuf;
+ if (!(ld_le32(&rd->status) & ACTIVE)) {
+ dbdma_reset(&info->rx->dma);
+ rxdma_start(info, info->rx_ubuf);
+ info->rx_cbuf = info->rx_ubuf;
+ }
+ }
+ info->rx_done_bytes = 0;
+ if (++info->rx_ubuf == info->rx_nbuf)
+ info->rx_ubuf = 0;
+ if (info->rx_fbuf == info->rx_ubuf)
+ info->rx_fbuf = RX_NO_FBUF;
+ goto more;
+ }
+out:
+ spin_unlock_irqrestore(&info->rx_dma_lock, flags);
+ if (do_queue)
+ tty_flip_buffer_push(tty);
+}
+
+static void poll_rxdma(unsigned long private_)
+{
+ struct mac_serial *info = (struct mac_serial *) private_;
+ unsigned long flags;
+
+ rxdma_to_tty(info);
+ spin_lock_irqsave(&info->rx_dma_lock, flags);
+ mod_timer(&info->poll_dma_timer, RX_DMA_TIMER);
+ spin_unlock_irqrestore(&info->rx_dma_lock, flags);
+}
+
+static void dma_init(struct mac_serial * info)
+{
+ int i, size;
+ volatile struct dbdma_cmd *cd;
+ unsigned char *p;
+
+ info->rx_nbuf = 8;
+
+ /* various mem set up */
+ size = sizeof(struct dbdma_cmd) * (3 * info->rx_nbuf + 2)
+ + (RX_BUF_SIZE * 2 + sizeof(*info->rx_cmds)
+ + sizeof(*info->rx_char_buf) + sizeof(*info->rx_flag_buf))
+ * info->rx_nbuf;
+ info->dma_priv = kmalloc(size, GFP_KERNEL | GFP_DMA);
+ if (info->dma_priv == NULL)
+ return;
+ memset(info->dma_priv, 0, size);
+
+ info->rx_cmds = (volatile struct dbdma_cmd **)info->dma_priv;
+ info->rx_char_buf = (unsigned char **) (info->rx_cmds + info->rx_nbuf);
+ info->rx_flag_buf = info->rx_char_buf + info->rx_nbuf;
+ p = (unsigned char *) (info->rx_flag_buf + info->rx_nbuf);
+ for (i = 0; i < info->rx_nbuf; i++, p += RX_BUF_SIZE)
+ info->rx_char_buf[i] = p;
+ for (i = 0; i < info->rx_nbuf; i++, p += RX_BUF_SIZE)
+ info->rx_flag_buf[i] = p;
+
+ /* a bit of DMA programming */
+ cd = info->rx_cmds[0] = (volatile struct dbdma_cmd *) DBDMA_ALIGN(p);
+ st_le16(&cd->command, DBDMA_NOP);
+ cd++;
+ st_le16(&cd->req_count, RX_BUF_SIZE);
+ st_le16(&cd->command, INPUT_MORE);
+ st_le32(&cd->phy_addr, virt_to_bus(info->rx_char_buf[0]));
+ cd++;
+ st_le16(&cd->req_count, 4);
+ st_le16(&cd->command, STORE_WORD | INTR_ALWAYS);
+ st_le32(&cd->phy_addr, virt_to_bus(cd-2));
+ st_le32(&cd->cmd_dep, DBDMA_STOP);
+ for (i = 1; i < info->rx_nbuf; i++) {
+ info->rx_cmds[i] = ++cd;
+ st_le16(&cd->command, DBDMA_NOP);
+ cd++;
+ st_le16(&cd->req_count, RX_BUF_SIZE);
+ st_le16(&cd->command, INPUT_MORE);
+ st_le32(&cd->phy_addr, virt_to_bus(info->rx_char_buf[i]));
+ cd++;
+ st_le16(&cd->req_count, 4);
+ st_le16(&cd->command, STORE_WORD | INTR_ALWAYS);
+ st_le32(&cd->phy_addr, virt_to_bus(cd-2));
+ st_le32(&cd->cmd_dep, DBDMA_STOP);
+ }
+ cd++;
+ st_le16(&cd->command, DBDMA_NOP | BR_ALWAYS);
+ st_le32(&cd->cmd_dep, virt_to_bus(info->rx_cmds[0]));
+
+ /* setup DMA to our liking */
+ dbdma_reset(&info->rx->dma);
+ st_le32(&info->rx->dma.intr_sel, 0x10001);
+ st_le32(&info->rx->dma.br_sel, 0x10001);
+ out_le32(&info->rx->dma.wait_sel, 0x10001);
+
+ /* set various flags */
+ info->rx_ubuf = 0;
+ info->rx_cbuf = 0;
+ info->rx_fbuf = info->rx_ubuf + 1;
+ if (info->rx_fbuf == info->rx_nbuf)
+ info->rx_fbuf = RX_NO_FBUF;
+ info->rx_done_bytes = 0;
+
+ /* setup polling */
+ init_timer(&info->poll_dma_timer);
+ info->poll_dma_timer.function = (void *)&poll_rxdma;
+ info->poll_dma_timer.data = (unsigned long)info;
+
+ info->dma_initted = 1;
+}
+
+/*
+ * FixZeroBug....Works around a bug in the SCC receving channel.
+ * Taken from Darwin code, 15 Sept. 2000 -DanM
+ *
+ * The following sequence prevents a problem that is seen with O'Hare ASICs
+ * (most versions -- also with some Heathrow and Hydra ASICs) where a zero
+ * at the input to the receiver becomes 'stuck' and locks up the receiver.
+ * This problem can occur as a result of a zero bit at the receiver input
+ * coincident with any of the following events:
+ *
+ * The SCC is initialized (hardware or software).
+ * A framing error is detected.
+ * The clocking option changes from synchronous or X1 asynchronous
+ * clocking to X16, X32, or X64 asynchronous clocking.
+ * The decoding mode is changed among NRZ, NRZI, FM0, or FM1.
+ *
+ * This workaround attempts to recover from the lockup condition by placing
+ * the SCC in synchronous loopback mode with a fast clock before programming
+ * any of the asynchronous modes.
+ */
+static void fix_zero_bug_scc(struct mac_serial * info)
+{
+ write_zsreg(info->zs_channel, 9,
+ (info->zs_channel == info->zs_chan_a? CHRA: CHRB));
+ udelay(10);
+ write_zsreg(info->zs_channel, 9,
+ ((info->zs_channel == info->zs_chan_a? CHRA: CHRB) | NV));
+
+ write_zsreg(info->zs_channel, 4, (X1CLK | EXTSYNC));
+
+ /* I think this is wrong....but, I just copying code....
+ */
+ write_zsreg(info->zs_channel, 3, (8 & ~RxENABLE));
+
+ write_zsreg(info->zs_channel, 5, (8 & ~TxENAB));
+ write_zsreg(info->zs_channel, 9, NV); /* Didn't we already do this? */
+ write_zsreg(info->zs_channel, 11, (RCBR | TCBR));
+ write_zsreg(info->zs_channel, 12, 0);
+ write_zsreg(info->zs_channel, 13, 0);
+ write_zsreg(info->zs_channel, 14, (LOOPBAK | SSBR));
+ write_zsreg(info->zs_channel, 14, (LOOPBAK | SSBR | BRENABL));
+ write_zsreg(info->zs_channel, 3, (8 | RxENABLE));
+ write_zsreg(info->zs_channel, 0, RES_EXT_INT);
+ write_zsreg(info->zs_channel, 0, RES_EXT_INT); /* to kill some time */
+
+ /* The channel should be OK now, but it is probably receiving
+ * loopback garbage.
+ * Switch to asynchronous mode, disable the receiver,
+ * and discard everything in the receive buffer.
+ */
+ write_zsreg(info->zs_channel, 9, NV);
+ write_zsreg(info->zs_channel, 4, PAR_ENA);
+ write_zsreg(info->zs_channel, 3, (8 & ~RxENABLE));
+
+ while (read_zsreg(info->zs_channel, 0) & Rx_CH_AV) {
+ (void)read_zsreg(info->zs_channel, 8);
+ write_zsreg(info->zs_channel, 0, RES_EXT_INT);
+ write_zsreg(info->zs_channel, 0, ERR_RES);
+ }
+}
+
+static int setup_scc(struct mac_serial * info)
+{
+ unsigned long flags;
+
+ OPNDBG("setting up ttyS%d SCC...\n", info->line);
+
+ spin_lock_irqsave(&info->lock, flags);
+
+ /* Nice buggy HW ... */
+ fix_zero_bug_scc(info);
+
+ /*
+ * Reset the chip.
+ */
+ write_zsreg(info->zs_channel, 9,
+ (info->zs_channel == info->zs_chan_a? CHRA: CHRB));
+ udelay(10);
+ write_zsreg(info->zs_channel, 9, 0);
+
+ /*
+ * Clear the receive FIFO.
+ */
+ ZS_CLEARFIFO(info->zs_channel);
+ info->xmit_fifo_size = 1;
+
+ /*
+ * Reset DMAs
+ */
+ if (info->has_dma)
+ dma_init(info);
+
+ /*
+ * Clear the interrupt registers.
+ */
+ write_zsreg(info->zs_channel, 0, ERR_RES);
+ write_zsreg(info->zs_channel, 0, RES_H_IUS);
+
+ /*
+ * Turn on RTS and DTR.
+ */
+ if (!info->is_irda)
+ zs_rtsdtr(info, 1);
+
+ /*
+ * Finally, enable sequencing and interrupts
+ */
+ if (!info->dma_initted) {
+ /* interrupt on ext/status changes, all received chars,
+ transmit ready */
+ info->curregs[1] = (info->curregs[1] & ~0x18)
+ | (EXT_INT_ENAB | INT_ALL_Rx | TxINT_ENAB);
+ } else {
+ /* interrupt on ext/status changes, W/Req pin is
+ receive DMA request */
+ info->curregs[1] = (info->curregs[1] & ~(0x18 | TxINT_ENAB))
+ | (EXT_INT_ENAB | WT_RDY_RT | WT_FN_RDYFN);
+ write_zsreg(info->zs_channel, 1, info->curregs[1]);
+ /* enable W/Req pin */
+ info->curregs[1] |= WT_RDY_ENAB;
+ write_zsreg(info->zs_channel, 1, info->curregs[1]);
+ /* enable interrupts on transmit ready and receive errors */
+ info->curregs[1] |= INT_ERR_Rx | TxINT_ENAB;
+ }
+ info->pendregs[1] = info->curregs[1];
+ info->curregs[3] |= (RxENABLE | Rx8);
+ info->pendregs[3] = info->curregs[3];
+ info->curregs[5] |= (TxENAB | Tx8);
+ info->pendregs[5] = info->curregs[5];
+ info->curregs[9] |= (NV | MIE);
+ info->pendregs[9] = info->curregs[9];
+ write_zsreg(info->zs_channel, 3, info->curregs[3]);
+ write_zsreg(info->zs_channel, 5, info->curregs[5]);
+ write_zsreg(info->zs_channel, 9, info->curregs[9]);
+
+ if (info->tty)
+ clear_bit(TTY_IO_ERROR, &info->tty->flags);
+ info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
+
+ spin_unlock_irqrestore(&info->lock, flags);
+
+ /*
+ * Set the speed of the serial port
+ */
+ change_speed(info, 0);
+
+ /* Save the current value of RR0 */
+ info->read_reg_zero = read_zsreg(info->zs_channel, 0);
+
+ if (info->dma_initted) {
+ spin_lock_irqsave(&info->rx_dma_lock, flags);
+ rxdma_start(info, 0);
+ info->poll_dma_timer.expires = RX_DMA_TIMER;
+ add_timer(&info->poll_dma_timer);
+ spin_unlock_irqrestore(&info->rx_dma_lock, flags);
+ }
+
+ return 0;
+}
+
+/*
+ * This routine will shutdown a serial port; interrupts are disabled, and
+ * DTR is dropped if the hangup on close termio flag is on.
+ */
+static void shutdown(struct mac_serial * info)
+{
+ OPNDBG("Shutting down serial port %d (irq %d)....\n", info->line,
+ info->irq);
+
+ if (!(info->flags & ZILOG_INITIALIZED)) {
+ OPNDBG("(already shutdown)\n");
+ return;
+ }
+
+ if (info->has_dma) {
+ del_timer(&info->poll_dma_timer);
+ dbdma_reset(info->tx_dma);
+ dbdma_reset(&info->rx->dma);
+ disable_irq(info->tx_dma_irq);
+ disable_irq(info->rx_dma_irq);
+ }
+ disable_irq(info->irq);
+
+ info->pendregs[1] = info->curregs[1] = 0;
+ write_zsreg(info->zs_channel, 1, 0); /* no interrupts */
+
+ info->curregs[3] &= ~RxENABLE;
+ info->pendregs[3] = info->curregs[3];
+ write_zsreg(info->zs_channel, 3, info->curregs[3]);
+
+ info->curregs[5] &= ~TxENAB;
+ if (!info->tty || C_HUPCL(info->tty))
+ info->curregs[5] &= ~DTR;
+ info->pendregs[5] = info->curregs[5];
+ write_zsreg(info->zs_channel, 5, info->curregs[5]);
+
+ if (info->tty)
+ set_bit(TTY_IO_ERROR, &info->tty->flags);
+
+ set_scc_power(info, 0);
+
+ if (info->xmit_buf) {
+ free_page((unsigned long) info->xmit_buf);
+ info->xmit_buf = 0;
+ }
+
+ if (info->has_dma && info->dma_priv) {
+ kfree(info->dma_priv);
+ info->dma_priv = NULL;
+ info->dma_initted = 0;
+ }
+
+ memset(info->curregs, 0, sizeof(info->curregs));
+ memset(info->pendregs, 0, sizeof(info->pendregs));
+
+ info->flags &= ~ZILOG_INITIALIZED;
+}
+
+/*
+ * Turn power on or off to the SCC and associated stuff
+ * (port drivers, modem, IR port, etc.)
+ * Returns the number of milliseconds we should wait before
+ * trying to use the port.
+ */
+static int set_scc_power(struct mac_serial * info, int state)
+{
+ int delay = 0;
+
+ if (state) {
+ PWRDBG("ttyS%d: powering up hardware\n", info->line);
+ pmac_call_feature(
+ PMAC_FTR_SCC_ENABLE,
+ info->dev_node, info->port_type, 1);
+ if (info->is_internal_modem) {
+ pmac_call_feature(
+ PMAC_FTR_MODEM_ENABLE,
+ info->dev_node, 0, 1);
+ delay = 2500; /* wait for 2.5s before using */
+ } else if (info->is_irda)
+ mdelay(50); /* Do better here once the problems
+ * with blocking have been ironed out
+ */
+ } else {
+ /* TODO: Make that depend on a timer, don't power down
+ * immediately
+ */
+ PWRDBG("ttyS%d: shutting down hardware\n", info->line);
+ if (info->is_internal_modem) {
+ PWRDBG("ttyS%d: shutting down modem\n", info->line);
+ pmac_call_feature(
+ PMAC_FTR_MODEM_ENABLE,
+ info->dev_node, 0, 0);
+ }
+ pmac_call_feature(
+ PMAC_FTR_SCC_ENABLE,
+ info->dev_node, info->port_type, 0);
+ }
+ return delay;
+}
+
+static void irda_rts_pulses(struct mac_serial *info, int w)
+{
+ udelay(w);
+ write_zsreg(info->zs_channel, 5, Tx8 | TxENAB);
+ udelay(2);
+ write_zsreg(info->zs_channel, 5, Tx8 | TxENAB | RTS);
+ udelay(8);
+ write_zsreg(info->zs_channel, 5, Tx8 | TxENAB);
+ udelay(4);
+ write_zsreg(info->zs_channel, 5, Tx8 | TxENAB | RTS);
+}
+
+/*
+ * Set the irda codec on the imac to the specified baud rate.
+ */
+static void irda_setup(struct mac_serial *info)
+{
+ int code, speed, t;
+
+ speed = info->tty->termios->c_cflag & CBAUD;
+ if (speed < B2400 || speed > B115200)
+ return;
+ code = 0x4d + B115200 - speed;
+
+ /* disable serial interrupts and receive DMA */
+ write_zsreg(info->zs_channel, 1, info->curregs[1] & ~0x9f);
+
+ /* wait for transmitter to drain */
+ t = 10000;
+ while ((read_zsreg(info->zs_channel, 0) & Tx_BUF_EMP) == 0
+ || (read_zsreg(info->zs_channel, 1) & ALL_SNT) == 0) {
+ if (--t <= 0) {
+ printk(KERN_ERR "transmitter didn't drain\n");
+ return;
+ }
+ udelay(10);
+ }
+ udelay(100);
+
+ /* set to 8 bits, no parity, 19200 baud, RTS on, DTR off */
+ write_zsreg(info->zs_channel, 4, X16CLK | SB1);
+ write_zsreg(info->zs_channel, 11, TCBR | RCBR);
+ t = BPS_TO_BRG(19200, ZS_CLOCK/16);
+ write_zsreg(info->zs_channel, 12, t);
+ write_zsreg(info->zs_channel, 13, t >> 8);
+ write_zsreg(info->zs_channel, 14, BRENABL);
+ write_zsreg(info->zs_channel, 3, Rx8 | RxENABLE);
+ write_zsreg(info->zs_channel, 5, Tx8 | TxENAB | RTS);
+
+ /* set TxD low for ~104us and pulse RTS */
+ udelay(1000);
+ write_zsdata(info->zs_channel, 0xfe);
+ irda_rts_pulses(info, 150);
+ irda_rts_pulses(info, 180);
+ irda_rts_pulses(info, 50);
+ udelay(100);
+
+ /* assert DTR, wait 30ms, talk to the chip */
+ write_zsreg(info->zs_channel, 5, Tx8 | TxENAB | RTS | DTR);
+ mdelay(30);
+ while (read_zsreg(info->zs_channel, 0) & Rx_CH_AV)
+ read_zsdata(info->zs_channel);
+
+ write_zsdata(info->zs_channel, 1);
+ t = 1000;
+ while ((read_zsreg(info->zs_channel, 0) & Rx_CH_AV) == 0) {
+ if (--t <= 0) {
+ printk(KERN_ERR "irda_setup timed out on 1st byte\n");
+ goto out;
+ }
+ udelay(10);
+ }
+ t = read_zsdata(info->zs_channel);
+ if (t != 4)
+ printk(KERN_ERR "irda_setup 1st byte = %x\n", t);
+
+ write_zsdata(info->zs_channel, code);
+ t = 1000;
+ while ((read_zsreg(info->zs_channel, 0) & Rx_CH_AV) == 0) {
+ if (--t <= 0) {
+ printk(KERN_ERR "irda_setup timed out on 2nd byte\n");
+ goto out;
+ }
+ udelay(10);
+ }
+ t = read_zsdata(info->zs_channel);
+ if (t != code)
+ printk(KERN_ERR "irda_setup 2nd byte = %x (%x)\n", t, code);
+
+ /* Drop DTR again and do some more RTS pulses */
+ out:
+ udelay(100);
+ write_zsreg(info->zs_channel, 5, Tx8 | TxENAB | RTS);
+ irda_rts_pulses(info, 80);
+
+ /* We should be right to go now. We assume that load_zsregs
+ will get called soon to load up the correct baud rate etc. */
+ info->curregs[5] = (info->curregs[5] | RTS) & ~DTR;
+ info->pendregs[5] = info->curregs[5];
+}
+
+/*
+ * This routine is called to set the UART divisor registers to match
+ * the specified baud rate for a serial port.
+ */
+static void change_speed(struct mac_serial *info, struct termios *old_termios)
+{
+ unsigned cflag;
+ int bits;
+ int brg, baud;
+ unsigned long flags;
+
+ if (!info->tty || !info->tty->termios)
+ return;
+
+ cflag = info->tty->termios->c_cflag;
+ baud = tty_get_baud_rate(info->tty);
+ if (baud == 0) {
+ if (old_termios) {
+ info->tty->termios->c_cflag &= ~CBAUD;
+ info->tty->termios->c_cflag |= (old_termios->c_cflag & CBAUD);
+ cflag = info->tty->termios->c_cflag;
+ baud = tty_get_baud_rate(info->tty);
+ }
+ else
+ baud = info->zs_baud;
+ }
+ if (baud > 230400)
+ baud = 230400;
+ else if (baud == 0)
+ baud = 38400;
+
+ spin_lock_irqsave(&info->lock, flags);
+ info->zs_baud = baud;
+ info->clk_divisor = 16;
+
+ BAUDBG(KERN_DEBUG "set speed to %d bds, ", baud);
+
+ switch (baud) {
+ case ZS_CLOCK/16: /* 230400 */
+ info->curregs[4] = X16CLK;
+ info->curregs[11] = 0;
+ break;
+ case ZS_CLOCK/32: /* 115200 */
+ info->curregs[4] = X32CLK;
+ info->curregs[11] = 0;
+ break;
+ default:
+ info->curregs[4] = X16CLK;
+ info->curregs[11] = TCBR | RCBR;
+ brg = BPS_TO_BRG(baud, ZS_CLOCK/info->clk_divisor);
+ info->curregs[12] = (brg & 255);
+ info->curregs[13] = ((brg >> 8) & 255);
+ info->curregs[14] = BRENABL;
+ }
+
+ /* byte size and parity */
+ info->curregs[3] &= ~RxNBITS_MASK;
+ info->curregs[5] &= ~TxNBITS_MASK;
+ switch (cflag & CSIZE) {
+ case CS5:
+ info->curregs[3] |= Rx5;
+ info->curregs[5] |= Tx5;
+ BAUDBG("5 bits, ");
+ bits = 7;
+ break;
+ case CS6:
+ info->curregs[3] |= Rx6;
+ info->curregs[5] |= Tx6;
+ BAUDBG("6 bits, ");
+ bits = 8;
+ break;
+ case CS7:
+ info->curregs[3] |= Rx7;
+ info->curregs[5] |= Tx7;
+ BAUDBG("7 bits, ");
+ bits = 9;
+ break;
+ case CS8:
+ default: /* defaults to 8 bits */
+ info->curregs[3] |= Rx8;
+ info->curregs[5] |= Tx8;
+ BAUDBG("8 bits, ");
+ bits = 10;
+ break;
+ }
+ info->pendregs[3] = info->curregs[3];
+ info->pendregs[5] = info->curregs[5];
+
+ info->curregs[4] &= ~(SB_MASK | PAR_ENA | PAR_EVEN);
+ if (cflag & CSTOPB) {
+ info->curregs[4] |= SB2;
+ bits++;
+ BAUDBG("2 stop, ");
+ } else {
+ info->curregs[4] |= SB1;
+ BAUDBG("1 stop, ");
+ }
+ if (cflag & PARENB) {
+ bits++;
+ info->curregs[4] |= PAR_ENA;
+ BAUDBG("parity, ");
+ }
+ if (!(cflag & PARODD)) {
+ info->curregs[4] |= PAR_EVEN;
+ }
+ info->pendregs[4] = info->curregs[4];
+
+ if (!(cflag & CLOCAL)) {
+ if (!(info->curregs[15] & DCDIE))
+ info->read_reg_zero = read_zsreg(info->zs_channel, 0);
+ info->curregs[15] |= DCDIE;
+ } else
+ info->curregs[15] &= ~DCDIE;
+ if (cflag & CRTSCTS) {
+ info->curregs[15] |= CTSIE;
+ if ((read_zsreg(info->zs_channel, 0) & CTS) != 0)
+ info->tx_stopped = 1;
+ } else {
+ info->curregs[15] &= ~CTSIE;
+ info->tx_stopped = 0;
+ }
+ info->pendregs[15] = info->curregs[15];
+
+ /* Calc timeout value. This is pretty broken with high baud rates with HZ=100.
+ This code would love a larger HZ and a >1 fifo size, but this is not
+ a priority. The resulting value must be >HZ/2
+ */
+ info->timeout = ((info->xmit_fifo_size*HZ*bits) / baud);
+ info->timeout += HZ/50+1; /* Add .02 seconds of slop */
+
+ BAUDBG("timeout=%d/%ds, base:%d\n", (int)info->timeout, (int)HZ,
+ (int)info->baud_base);
+
+ /* set the irda codec to the right rate */
+ if (info->is_irda)
+ irda_setup(info);
+
+ /* Load up the new values */
+ load_zsregs(info->zs_channel, info->curregs);
+
+ spin_unlock_irqrestore(&info->lock, flags);
+}
+
+static void rs_flush_chars(struct tty_struct *tty)
+{
+ struct mac_serial *info = (struct mac_serial *)tty->driver_data;
+ unsigned long flags;
+
+ if (serial_paranoia_check(info, tty->name, "rs_flush_chars"))
+ return;
+
+ spin_lock_irqsave(&info->lock, flags);
+ if (!(info->xmit_cnt <= 0 || tty->stopped || info->tx_stopped ||
+ !info->xmit_buf))
+ /* Enable transmitter */
+ transmit_chars(info);
+ spin_unlock_irqrestore(&info->lock, flags);
+}
+
+static int rs_write(struct tty_struct * tty,
+ const unsigned char *buf, int count)
+{
+ int c, ret = 0;
+ struct mac_serial *info = (struct mac_serial *)tty->driver_data;
+ unsigned long flags;
+
+ if (serial_paranoia_check(info, tty->name, "rs_write"))
+ return 0;
+
+ if (!tty || !info->xmit_buf || !tmp_buf)
+ return 0;
+
+ while (1) {
+ spin_lock_irqsave(&info->lock, flags);
+ c = min_t(int, count, min(SERIAL_XMIT_SIZE - info->xmit_cnt - 1,
+ SERIAL_XMIT_SIZE - info->xmit_head));
+ if (c <= 0) {
+ spin_unlock_irqrestore(&info->lock, flags);
+ break;
+ }
+ memcpy(info->xmit_buf + info->xmit_head, buf, c);
+ info->xmit_head = ((info->xmit_head + c) &
+ (SERIAL_XMIT_SIZE-1));
+ info->xmit_cnt += c;
+ spin_unlock_irqrestore(&info->lock, flags);
+ buf += c;
+ count -= c;
+ ret += c;
+ }
+ spin_lock_irqsave(&info->lock, flags);
+ if (info->xmit_cnt && !tty->stopped && !info->tx_stopped
+ && !info->tx_active)
+ transmit_chars(info);
+ spin_unlock_irqrestore(&info->lock, flags);
+ return ret;
+}
+
+static int rs_write_room(struct tty_struct *tty)
+{
+ struct mac_serial *info = (struct mac_serial *)tty->driver_data;
+ int ret;
+
+ if (serial_paranoia_check(info, tty->name, "rs_write_room"))
+ return 0;
+ ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1;
+ if (ret < 0)
+ ret = 0;
+ return ret;
+}
+
+static int rs_chars_in_buffer(struct tty_struct *tty)
+{
+ struct mac_serial *info = (struct mac_serial *)tty->driver_data;
+
+ if (serial_paranoia_check(info, tty->name, "rs_chars_in_buffer"))
+ return 0;
+ return info->xmit_cnt;
+}
+
+static void rs_flush_buffer(struct tty_struct *tty)
+{
+ struct mac_serial *info = (struct mac_serial *)tty->driver_data;
+ unsigned long flags;
+
+ if (serial_paranoia_check(info, tty->name, "rs_flush_buffer"))
+ return;
+ spin_lock_irqsave(&info->lock, flags);
+ info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
+ spin_unlock_irqrestore(&info->lock, flags);
+ tty_wakeup(tty);
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_throttle()
+ *
+ * This routine is called by the upper-layer tty layer to signal that
+ * incoming characters should be throttled.
+ * ------------------------------------------------------------
+ */
+static void rs_throttle(struct tty_struct * tty)
+{
+ struct mac_serial *info = (struct mac_serial *)tty->driver_data;
+ unsigned long flags;
+#ifdef SERIAL_DEBUG_THROTTLE
+ printk(KERN_DEBUG "throttle %ld....\n",tty->ldisc.chars_in_buffer(tty));
+#endif
+
+ if (serial_paranoia_check(info, tty->name, "rs_throttle"))
+ return;
+
+ if (I_IXOFF(tty)) {
+ spin_lock_irqsave(&info->lock, flags);
+ info->x_char = STOP_CHAR(tty);
+ if (!info->tx_active)
+ transmit_chars(info);
+ spin_unlock_irqrestore(&info->lock, flags);
+ }
+
+ if (C_CRTSCTS(tty)) {
+ /*
+ * Here we want to turn off the RTS line. On Macintoshes,
+ * the external serial ports using a DIN-8 or DIN-9
+ * connector only have the DTR line (which is usually
+ * wired to both RTS and DTR on an external modem in
+ * the cable). RTS doesn't go out to the serial port
+ * socket, it acts as an output enable for the transmit
+ * data line. So in this case we don't drop RTS.
+ *
+ * Macs with internal modems generally do have both RTS
+ * and DTR wired to the modem, so in that case we do
+ * drop RTS.
+ */
+ if (info->is_internal_modem) {
+ spin_lock_irqsave(&info->lock, flags);
+ info->curregs[5] &= ~RTS;
+ info->pendregs[5] &= ~RTS;
+ write_zsreg(info->zs_channel, 5, info->curregs[5]);
+ spin_unlock_irqrestore(&info->lock, flags);
+ }
+ }
+
+#ifdef CDTRCTS
+ if (tty->termios->c_cflag & CDTRCTS) {
+ spin_lock_irqsave(&info->lock, flags);
+ info->curregs[5] &= ~DTR;
+ info->pendregs[5] &= ~DTR;
+ write_zsreg(info->zs_channel, 5, info->curregs[5]);
+ spin_unlock_irqrestore(&info->lock, flags);
+ }
+#endif /* CDTRCTS */
+}
+
+static void rs_unthrottle(struct tty_struct * tty)
+{
+ struct mac_serial *info = (struct mac_serial *)tty->driver_data;
+ unsigned long flags;
+#ifdef SERIAL_DEBUG_THROTTLE
+ printk(KERN_DEBUG "unthrottle %s: %d....\n",
+ tty->ldisc.chars_in_buffer(tty));
+#endif
+
+ if (serial_paranoia_check(info, tty->name, "rs_unthrottle"))
+ return;
+
+ if (I_IXOFF(tty)) {
+ spin_lock_irqsave(&info->lock, flags);
+ if (info->x_char)
+ info->x_char = 0;
+ else {
+ info->x_char = START_CHAR(tty);
+ if (!info->tx_active)
+ transmit_chars(info);
+ }
+ spin_unlock_irqrestore(&info->lock, flags);
+ }
+
+ if (C_CRTSCTS(tty) && info->is_internal_modem) {
+ /* Assert RTS line */
+ spin_lock_irqsave(&info->lock, flags);
+ info->curregs[5] |= RTS;
+ info->pendregs[5] |= RTS;
+ write_zsreg(info->zs_channel, 5, info->curregs[5]);
+ spin_unlock_irqrestore(&info->lock, flags);
+ }
+
+#ifdef CDTRCTS
+ if (tty->termios->c_cflag & CDTRCTS) {
+ /* Assert DTR line */
+ spin_lock_irqsave(&info->lock, flags);
+ info->curregs[5] |= DTR;
+ info->pendregs[5] |= DTR;
+ write_zsreg(info->zs_channel, 5, info->curregs[5]);
+ spin_unlock_irqrestore(&info->lock, flags);
+ }
+#endif
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_ioctl() and friends
+ * ------------------------------------------------------------
+ */
+
+static int get_serial_info(struct mac_serial * info,
+ struct serial_struct __user * retinfo)
+{
+ struct serial_struct tmp;
+
+ if (!retinfo)
+ return -EFAULT;
+ memset(&tmp, 0, sizeof(tmp));
+ tmp.type = info->type;
+ tmp.line = info->line;
+ tmp.port = info->port;
+ tmp.irq = info->irq;
+ tmp.flags = info->flags;
+ tmp.baud_base = info->baud_base;
+ tmp.close_delay = info->close_delay;
+ tmp.closing_wait = info->closing_wait;
+ tmp.custom_divisor = info->custom_divisor;
+ if (copy_to_user(retinfo,&tmp,sizeof(*retinfo)))
+ return -EFAULT;
+ return 0;
+}
+
+static int set_serial_info(struct mac_serial * info,
+ struct serial_struct __user * new_info)
+{
+ struct serial_struct new_serial;
+ struct mac_serial old_info;
+ int retval = 0;
+
+ if (copy_from_user(&new_serial,new_info,sizeof(new_serial)))
+ return -EFAULT;
+ old_info = *info;
+
+ if (!capable(CAP_SYS_ADMIN)) {
+ if ((new_serial.baud_base != info->baud_base) ||
+ (new_serial.type != info->type) ||
+ (new_serial.close_delay != info->close_delay) ||
+ ((new_serial.flags & ~ZILOG_USR_MASK) !=
+ (info->flags & ~ZILOG_USR_MASK)))
+ return -EPERM;
+ info->flags = ((info->flags & ~ZILOG_USR_MASK) |
+ (new_serial.flags & ZILOG_USR_MASK));
+ info->custom_divisor = new_serial.custom_divisor;
+ goto check_and_exit;
+ }
+
+ if (info->count > 1)
+ return -EBUSY;
+
+ /*
+ * OK, past this point, all the error checking has been done.
+ * At this point, we start making changes.....
+ */
+
+ info->baud_base = new_serial.baud_base;
+ info->flags = ((info->flags & ~ZILOG_FLAGS) |
+ (new_serial.flags & ZILOG_FLAGS));
+ info->type = new_serial.type;
+ info->close_delay = new_serial.close_delay;
+ info->closing_wait = new_serial.closing_wait;
+
+check_and_exit:
+ if (info->flags & ZILOG_INITIALIZED)
+ retval = setup_scc(info);
+ return retval;
+}
+
+/*
+ * get_lsr_info - get line status register info
+ *
+ * Purpose: Let user call ioctl() to get info when the UART physically
+ * is emptied. On bus types like RS485, the transmitter must
+ * release the bus after transmitting. This must be done when
+ * the transmit shift register is empty, not be done when the
+ * transmit holding register is empty. This functionality
+ * allows an RS485 driver to be written in user space.
+ */
+static int get_lsr_info(struct mac_serial * info, unsigned int *value)
+{
+ unsigned char status;
+ unsigned long flags;
+
+ spin_lock_irqsave(&info->lock, flags);
+ status = read_zsreg(info->zs_channel, 0);
+ spin_unlock_irqrestore(&info->lock, flags);
+ status = (status & Tx_BUF_EMP)? TIOCSER_TEMT: 0;
+ return put_user(status,value);
+}
+
+static int rs_tiocmget(struct tty_struct *tty, struct file *file)
+{
+ struct mac_serial * info = (struct mac_serial *)tty->driver_data;
+ unsigned char control, status;
+ unsigned long flags;
+
+#ifdef CONFIG_KGDB
+ if (info->kgdb_channel)
+ return -ENODEV;
+#endif
+ if (serial_paranoia_check(info, tty->name, __FUNCTION__))
+ return -ENODEV;
+
+ if (tty->flags & (1 << TTY_IO_ERROR))
+ return -EIO;
+
+ spin_lock_irqsave(&info->lock, flags);
+ control = info->curregs[5];
+ status = read_zsreg(info->zs_channel, 0);
+ spin_unlock_irqrestore(&info->lock, flags);
+ return ((control & RTS) ? TIOCM_RTS: 0)
+ | ((control & DTR) ? TIOCM_DTR: 0)
+ | ((status & DCD) ? TIOCM_CAR: 0)
+ | ((status & CTS) ? 0: TIOCM_CTS);
+}
+
+static int rs_tiocmset(struct tty_struct *tty, struct file *file,
+ unsigned int set, unsigned int clear)
+{
+ struct mac_serial * info = (struct mac_serial *)tty->driver_data;
+ unsigned int arg, bits;
+ unsigned long flags;
+
+#ifdef CONFIG_KGDB
+ if (info->kgdb_channel)
+ return -ENODEV;
+#endif
+ if (serial_paranoia_check(info, tty->name, __FUNCTION__))
+ return -ENODEV;
+
+ if (tty->flags & (1 << TTY_IO_ERROR))
+ return -EIO;
+
+ spin_lock_irqsave(&info->lock, flags);
+ if (set & TIOCM_RTS)
+ info->curregs[5] |= RTS;
+ if (set & TIOCM_DTR)
+ info->curregs[5] |= DTR;
+ if (clear & TIOCM_RTS)
+ info->curregs[5] &= ~RTS;
+ if (clear & TIOCM_DTR)
+ info->curregs[5] &= ~DTR;
+
+ info->pendregs[5] = info->curregs[5];
+ write_zsreg(info->zs_channel, 5, info->curregs[5]);
+ spin_unlock_irqrestore(&info->lock, flags);
+ return 0;
+}
+
+/*
+ * rs_break - turn transmit break condition on/off
+ */
+static void rs_break(struct tty_struct *tty, int break_state)
+{
+ struct mac_serial *info = (struct mac_serial *) tty->driver_data;
+ unsigned long flags;
+
+ if (serial_paranoia_check(info, tty->name, "rs_break"))
+ return;
+
+ spin_lock_irqsave(&info->lock, flags);
+ if (break_state == -1)
+ info->curregs[5] |= SND_BRK;
+ else
+ info->curregs[5] &= ~SND_BRK;
+ write_zsreg(info->zs_channel, 5, info->curregs[5]);
+ spin_unlock_irqrestore(&info->lock, flags);
+}
+
+static int rs_ioctl(struct tty_struct *tty, struct file * file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct mac_serial * info = (struct mac_serial *)tty->driver_data;
+
+#ifdef CONFIG_KGDB
+ if (info->kgdb_channel)
+ return -ENODEV;
+#endif
+ if (serial_paranoia_check(info, tty->name, "rs_ioctl"))
+ return -ENODEV;
+
+ if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
+ (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGSTRUCT)) {
+ if (tty->flags & (1 << TTY_IO_ERROR))
+ return -EIO;
+ }
+
+ switch (cmd) {
+ case TIOCGSERIAL:
+ return get_serial_info(info,
+ (struct serial_struct __user *) arg);
+ case TIOCSSERIAL:
+ return set_serial_info(info,
+ (struct serial_struct __user *) arg);
+ case TIOCSERGETLSR: /* Get line status register */
+ return get_lsr_info(info, (unsigned int *) arg);
+
+ case TIOCSERGSTRUCT:
+ if (copy_to_user((struct mac_serial __user *) arg,
+ info, sizeof(struct mac_serial)))
+ return -EFAULT;
+ return 0;
+
+ default:
+ return -ENOIOCTLCMD;
+ }
+ return 0;
+}
+
+static void rs_set_termios(struct tty_struct *tty, struct termios *old_termios)
+{
+ struct mac_serial *info = (struct mac_serial *)tty->driver_data;
+ int was_stopped;
+
+ if (tty->termios->c_cflag == old_termios->c_cflag)
+ return;
+ was_stopped = info->tx_stopped;
+
+ change_speed(info, old_termios);
+
+ if (was_stopped && !info->tx_stopped) {
+ tty->hw_stopped = 0;
+ rs_start(tty);
+ }
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_close()
+ *
+ * This routine is called when the serial port gets closed.
+ * Wait for the last remaining data to be sent.
+ * ------------------------------------------------------------
+ */
+static void rs_close(struct tty_struct *tty, struct file * filp)
+{
+ struct mac_serial * info = (struct mac_serial *)tty->driver_data;
+ unsigned long flags;
+
+ if (!info || serial_paranoia_check(info, tty->name, "rs_close"))
+ return;
+
+ spin_lock_irqsave(&info->lock, flags);
+
+ if (tty_hung_up_p(filp)) {
+ spin_unlock_irqrestore(&info->lock, flags);
+ return;
+ }
+
+ OPNDBG("rs_close ttyS%d, count = %d\n", info->line, info->count);
+ if ((tty->count == 1) && (info->count != 1)) {
+ /*
+ * Uh, oh. tty->count is 1, which means that the tty
+ * structure will be freed. Info->count should always
+ * be one in these conditions. If it's greater than
+ * one, we've got real problems, since it means the
+ * serial port won't be shutdown.
+ */
+ printk(KERN_ERR "rs_close: bad serial port count; tty->count "
+ "is 1, info->count is %d\n", info->count);
+ info->count = 1;
+ }
+ if (--info->count < 0) {
+ printk(KERN_ERR "rs_close: bad serial port count for "
+ "ttyS%d: %d\n", info->line, info->count);
+ info->count = 0;
+ }
+ if (info->count) {
+ spin_unlock_irqrestore(&info->lock, flags);
+ return;
+ }
+ info->flags |= ZILOG_CLOSING;
+ /*
+ * Now we wait for the transmit buffer to clear; and we notify
+ * the line discipline to only process XON/XOFF characters.
+ */
+ OPNDBG("waiting end of Tx... (timeout:%d)\n", info->closing_wait);
+ tty->closing = 1;
+ if (info->closing_wait != ZILOG_CLOSING_WAIT_NONE) {
+ spin_unlock_irqrestore(&info->lock, flags);
+ tty_wait_until_sent(tty, info->closing_wait);
+ spin_lock_irqsave(&info->lock, flags);
+ }
+
+ /*
+ * At this point we stop accepting input. To do this, we
+ * disable the receiver and receive interrupts.
+ */
+ info->curregs[3] &= ~RxENABLE;
+ info->pendregs[3] = info->curregs[3];
+ write_zsreg(info->zs_channel, 3, info->curregs[3]);
+ info->curregs[1] &= ~(0x18); /* disable any rx ints */
+ info->pendregs[1] = info->curregs[1];
+ write_zsreg(info->zs_channel, 1, info->curregs[1]);
+ ZS_CLEARFIFO(info->zs_channel);
+ if (info->flags & ZILOG_INITIALIZED) {
+ /*
+ * Before we drop DTR, make sure the SCC transmitter
+ * has completely drained.
+ */
+ OPNDBG("waiting end of Rx...\n");
+ spin_unlock_irqrestore(&info->lock, flags);
+ rs_wait_until_sent(tty, info->timeout);
+ spin_lock_irqsave(&info->lock, flags);
+ }
+
+ shutdown(info);
+ /* restore flags now since shutdown() will have disabled this port's
+ specific irqs */
+ spin_unlock_irqrestore(&info->lock, flags);
+
+ if (tty->driver->flush_buffer)
+ tty->driver->flush_buffer(tty);
+ tty_ldisc_flush(tty);
+ tty->closing = 0;
+ info->event = 0;
+ info->tty = 0;
+
+ if (info->blocked_open) {
+ if (info->close_delay) {
+ msleep_interruptible(jiffies_to_msecs(info->close_delay));
+ }
+ wake_up_interruptible(&info->open_wait);
+ }
+ info->flags &= ~(ZILOG_NORMAL_ACTIVE|ZILOG_CLOSING);
+ wake_up_interruptible(&info->close_wait);
+}
+
+/*
+ * rs_wait_until_sent() --- wait until the transmitter is empty
+ */
+static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
+{
+ struct mac_serial *info = (struct mac_serial *) tty->driver_data;
+ unsigned long orig_jiffies, char_time;
+
+ if (serial_paranoia_check(info, tty->name, "rs_wait_until_sent"))
+ return;
+
+/* printk("rs_wait_until_sent, timeout:%d, tty_stopped:%d, tx_stopped:%d\n",
+ timeout, tty->stopped, info->tx_stopped);
+*/
+ orig_jiffies = jiffies;
+ /*
+ * Set the check interval to be 1/5 of the estimated time to
+ * send a single character, and make it at least 1. The check
+ * interval should also be less than the timeout.
+ */
+ if (info->timeout <= HZ/50) {
+ printk(KERN_INFO "macserial: invalid info->timeout=%d\n",
+ info->timeout);
+ info->timeout = HZ/50+1;
+ }
+
+ char_time = (info->timeout - HZ/50) / info->xmit_fifo_size;
+ char_time = char_time / 5;
+ if (char_time > HZ) {
+ printk(KERN_WARNING "macserial: char_time %ld >HZ !!!\n",
+ char_time);
+ char_time = 1;
+ } else if (char_time == 0)
+ char_time = 1;
+ if (timeout)
+ char_time = min_t(unsigned long, char_time, timeout);
+ while ((read_zsreg(info->zs_channel, 1) & ALL_SNT) == 0) {
+ msleep_interruptible(jiffies_to_msecs(char_time));
+ if (signal_pending(current))
+ break;
+ if (timeout && time_after(jiffies, orig_jiffies + timeout))
+ break;
+ }
+ current->state = TASK_RUNNING;
+}
+
+/*
+ * rs_hangup() --- called by tty_hangup() when a hangup is signaled.
+ */
+static void rs_hangup(struct tty_struct *tty)
+{
+ struct mac_serial * info = (struct mac_serial *)tty->driver_data;
+
+ if (serial_paranoia_check(info, tty->name, "rs_hangup"))
+ return;
+
+ rs_flush_buffer(tty);
+ shutdown(info);
+ info->event = 0;
+ info->count = 0;
+ info->flags &= ~ZILOG_NORMAL_ACTIVE;
+ info->tty = 0;
+ wake_up_interruptible(&info->open_wait);
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_open() and friends
+ * ------------------------------------------------------------
+ */
+static int block_til_ready(struct tty_struct *tty, struct file * filp,
+ struct mac_serial *info)
+{
+ DECLARE_WAITQUEUE(wait,current);
+ int retval;
+ int do_clocal = 0;
+
+ /*
+ * If the device is in the middle of being closed, then block
+ * until it's done, and then try again.
+ */
+ if (info->flags & ZILOG_CLOSING) {
+ interruptible_sleep_on(&info->close_wait);
+ return -EAGAIN;
+ }
+
+ /*
+ * If non-blocking mode is set, or the port is not enabled,
+ * then make the check up front and then exit.
+ */
+ if ((filp->f_flags & O_NONBLOCK) ||
+ (tty->flags & (1 << TTY_IO_ERROR))) {
+ info->flags |= ZILOG_NORMAL_ACTIVE;
+ return 0;
+ }
+
+ if (tty->termios->c_cflag & CLOCAL)
+ do_clocal = 1;
+
+ /*
+ * Block waiting for the carrier detect and the line to become
+ * free (i.e., not in use by the callout). While we are in
+ * this loop, info->count is dropped by one, so that
+ * rs_close() knows when to free things. We restore it upon
+ * exit, either normal or abnormal.
+ */
+ retval = 0;
+ add_wait_queue(&info->open_wait, &wait);
+ OPNDBG("block_til_ready before block: ttyS%d, count = %d\n",
+ info->line, info->count);
+ spin_lock_irq(&info->lock);
+ if (!tty_hung_up_p(filp))
+ info->count--;
+ spin_unlock_irq(&info->lock);
+ info->blocked_open++;
+ while (1) {
+ spin_lock_irq(&info->lock);
+ if ((tty->termios->c_cflag & CBAUD) &&
+ !info->is_irda)
+ zs_rtsdtr(info, 1);
+ spin_unlock_irq(&info->lock);
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (tty_hung_up_p(filp) ||
+ !(info->flags & ZILOG_INITIALIZED)) {
+ retval = -EAGAIN;
+ break;
+ }
+ if (!(info->flags & ZILOG_CLOSING) &&
+ (do_clocal || (read_zsreg(info->zs_channel, 0) & DCD)))
+ break;
+ if (signal_pending(current)) {
+ retval = -ERESTARTSYS;
+ break;
+ }
+ OPNDBG("block_til_ready blocking: ttyS%d, count = %d\n",
+ info->line, info->count);
+ schedule();
+ }
+ current->state = TASK_RUNNING;
+ remove_wait_queue(&info->open_wait, &wait);
+ if (!tty_hung_up_p(filp))
+ info->count++;
+ info->blocked_open--;
+ OPNDBG("block_til_ready after blocking: ttyS%d, count = %d\n",
+ info->line, info->count);
+ if (retval)
+ return retval;
+ info->flags |= ZILOG_NORMAL_ACTIVE;
+ return 0;
+}
+
+/*
+ * This routine is called whenever a serial port is opened. It
+ * enables interrupts for a serial port, linking in its ZILOG structure into
+ * the IRQ chain. It also performs the serial-specific
+ * initialization for the tty structure.
+ */
+static int rs_open(struct tty_struct *tty, struct file * filp)
+{
+ struct mac_serial *info;
+ int retval, line;
+ unsigned long page;
+
+ line = tty->index;
+ if ((line < 0) || (line >= zs_channels_found)) {
+ return -ENODEV;
+ }
+ info = zs_soft + line;
+
+#ifdef CONFIG_KGDB
+ if (info->kgdb_channel) {
+ return -ENODEV;
+ }
+#endif
+ if (serial_paranoia_check(info, tty->name, "rs_open"))
+ return -ENODEV;
+ OPNDBG("rs_open %s, count = %d, tty=%p\n", tty->name,
+ info->count, tty);
+
+ info->count++;
+ tty->driver_data = info;
+ info->tty = tty;
+
+ if (!tmp_buf) {
+ page = get_zeroed_page(GFP_KERNEL);
+ if (!page)
+ return -ENOMEM;
+ if (tmp_buf)
+ free_page(page);
+ else
+ tmp_buf = (unsigned char *) page;
+ }
+
+ /*
+ * If the port is the middle of closing, bail out now
+ */
+ if (tty_hung_up_p(filp) ||
+ (info->flags & ZILOG_CLOSING)) {
+ if (info->flags & ZILOG_CLOSING)
+ interruptible_sleep_on(&info->close_wait);
+ return -EAGAIN;
+ }
+
+ /*
+ * Start up serial port
+ */
+
+ retval = startup(info);
+ if (retval)
+ return retval;
+
+ retval = block_til_ready(tty, filp, info);
+ if (retval) {
+ OPNDBG("rs_open returning after block_til_ready with %d\n",
+ retval);
+ return retval;
+ }
+
+#ifdef CONFIG_SERIAL_CONSOLE
+ if (sercons.cflag && sercons.index == line) {
+ tty->termios->c_cflag = sercons.cflag;
+ sercons.cflag = 0;
+ change_speed(info, 0);
+ }
+#endif
+
+ OPNDBG("rs_open %s successful...\n", tty->name);
+ return 0;
+}
+
+/* Finally, routines used to initialize the serial driver. */
+
+static void show_serial_version(void)
+{
+ printk(KERN_INFO "PowerMac Z8530 serial driver version " MACSERIAL_VERSION "\n");
+}
+
+/*
+ * Initialize one channel, both the mac_serial and mac_zschannel
+ * structs. We use the dev_node field of the mac_serial struct.
+ */
+static int
+chan_init(struct mac_serial *zss, struct mac_zschannel *zs_chan,
+ struct mac_zschannel *zs_chan_a)
+{
+ struct device_node *ch = zss->dev_node;
+ char *conn;
+ int len;
+ struct slot_names_prop {
+ int count;
+ char name[1];
+ } *slots;
+
+ zss->irq = ch->intrs[0].line;
+ zss->has_dma = 0;
+#if !defined(CONFIG_KGDB) && defined(SUPPORT_SERIAL_DMA)
+ if (ch->n_addrs >= 3 && ch->n_intrs == 3)
+ zss->has_dma = 1;
+#endif
+ zss->dma_initted = 0;
+
+ zs_chan->control = (volatile unsigned char *)
+ ioremap(ch->addrs[0].address, 0x1000);
+ zs_chan->data = zs_chan->control + 0x10;
+ spin_lock_init(&zs_chan->lock);
+ zs_chan->parent = zss;
+ zss->zs_channel = zs_chan;
+ zss->zs_chan_a = zs_chan_a;
+
+ /* setup misc varariables */
+ zss->kgdb_channel = 0;
+
+ /* For now, we assume you either have a slot-names property
+ * with "Modem" in it, or your channel is compatible with
+ * "cobalt". Might need additional fixups
+ */
+ zss->is_internal_modem = device_is_compatible(ch, "cobalt");
+ conn = get_property(ch, "AAPL,connector", &len);
+ zss->is_irda = conn && (strcmp(conn, "infrared") == 0);
+ zss->port_type = PMAC_SCC_ASYNC;
+ /* 1999 Powerbook G3 has slot-names property instead */
+ slots = (struct slot_names_prop *)get_property(ch, "slot-names", &len);
+ if (slots && slots->count > 0) {
+ if (strcmp(slots->name, "IrDA") == 0)
+ zss->is_irda = 1;
+ else if (strcmp(slots->name, "Modem") == 0)
+ zss->is_internal_modem = 1;
+ }
+ if (zss->is_irda)
+ zss->port_type = PMAC_SCC_IRDA;
+ if (zss->is_internal_modem) {
+ struct device_node* i2c_modem = find_devices("i2c-modem");
+ if (i2c_modem) {
+ char* mid = get_property(i2c_modem, "modem-id", NULL);
+ if (mid) switch(*mid) {
+ case 0x04 :
+ case 0x05 :
+ case 0x07 :
+ case 0x08 :
+ case 0x0b :
+ case 0x0c :
+ zss->port_type = PMAC_SCC_I2S1;
+ }
+ printk(KERN_INFO "macserial: i2c-modem detected, id: %d\n",
+ mid ? (*mid) : 0);
+ } else {
+ printk(KERN_INFO "macserial: serial modem detected\n");
+ }
+ }
+
+ while (zss->has_dma) {
+ zss->dma_priv = NULL;
+ /* it seems that the last two addresses are the
+ DMA controllers */
+ zss->tx_dma = (volatile struct dbdma_regs *)
+ ioremap(ch->addrs[ch->n_addrs - 2].address, 0x100);
+ zss->rx = (volatile struct mac_dma *)
+ ioremap(ch->addrs[ch->n_addrs - 1].address, 0x100);
+ zss->tx_dma_irq = ch->intrs[1].line;
+ zss->rx_dma_irq = ch->intrs[2].line;
+ spin_lock_init(&zss->rx_dma_lock);
+ break;
+ }
+
+ init_timer(&zss->powerup_timer);
+ zss->powerup_timer.function = powerup_done;
+ zss->powerup_timer.data = (unsigned long) zss;
+ return 0;
+}
+
+/*
+ * /proc fs routines. TODO: Add status lines & error stats
+ */
+static inline int
+line_info(char *buf, struct mac_serial *info)
+{
+ int ret=0;
+ unsigned char* connector;
+ int lenp;
+
+ ret += sprintf(buf, "%d: port:0x%X irq:%d", info->line, info->port, info->irq);
+
+ connector = get_property(info->dev_node, "AAPL,connector", &lenp);
+ if (connector)
+ ret+=sprintf(buf+ret," con:%s ", connector);
+ if (info->is_internal_modem) {
+ if (!connector)
+ ret+=sprintf(buf+ret," con:");
+ ret+=sprintf(buf+ret,"%s", " (internal modem)");
+ }
+ if (info->is_irda) {
+ if (!connector)
+ ret+=sprintf(buf+ret," con:");
+ ret+=sprintf(buf+ret,"%s", " (IrDA)");
+ }
+ ret+=sprintf(buf+ret,"\n");
+
+ return ret;
+}
+
+int macserial_read_proc(char *page, char **start, off_t off, int count,
+ int *eof, void *data)
+{
+ int l, len = 0;
+ off_t begin = 0;
+ struct mac_serial *info;
+
+ len += sprintf(page, "serinfo:1.0 driver:" MACSERIAL_VERSION "\n");
+ for (info = zs_chain; info && len < 4000; info = info->zs_next) {
+ l = line_info(page + len, info);
+ len += l;
+ if (len+begin > off+count)
+ goto done;
+ if (len+begin < off) {
+ begin += len;
+ len = 0;
+ }
+ }
+ *eof = 1;
+done:
+ if (off >= len+begin)
+ return 0;
+ *start = page + (off-begin);
+ return ((count < begin+len-off) ? count : begin+len-off);
+}
+
+/* Ask the PROM how many Z8530s we have and initialize their zs_channels */
+static void
+probe_sccs(void)
+{
+ struct device_node *dev, *ch;
+ struct mac_serial **pp;
+ int n, chip, nchan;
+ struct mac_zschannel *zs_chan;
+ int chan_a_index;
+
+ n = 0;
+ pp = &zs_chain;
+ zs_chan = zs_channels;
+ for (dev = find_devices("escc"); dev != 0; dev = dev->next) {
+ nchan = 0;
+ chip = n;
+ if (n >= NUM_CHANNELS) {
+ printk(KERN_WARNING "Sorry, can't use %s: no more "
+ "channels\n", dev->full_name);
+ continue;
+ }
+ chan_a_index = 0;
+ for (ch = dev->child; ch != 0; ch = ch->sibling) {
+ if (nchan >= 2) {
+ printk(KERN_WARNING "SCC: Only 2 channels per "
+ "chip are supported\n");
+ break;
+ }
+ if (ch->n_addrs < 1 || (ch ->n_intrs < 1)) {
+ printk("Can't use %s: %d addrs %d intrs\n",
+ ch->full_name, ch->n_addrs, ch->n_intrs);
+ continue;
+ }
+
+ /* The channel with the higher address
+ will be the A side. */
+ if (nchan > 0 &&
+ ch->addrs[0].address
+ > zs_soft[n-1].dev_node->addrs[0].address)
+ chan_a_index = 1;
+
+ /* minimal initialization for now */
+ zs_soft[n].dev_node = ch;
+ *pp = &zs_soft[n];
+ pp = &zs_soft[n].zs_next;
+ ++nchan;
+ ++n;
+ }
+ if (nchan == 0)
+ continue;
+
+ /* set up A side */
+ if (chan_init(&zs_soft[chip + chan_a_index], zs_chan, zs_chan))
+ continue;
+ ++zs_chan;
+
+ /* set up B side, if it exists */
+ if (nchan > 1)
+ if (chan_init(&zs_soft[chip + 1 - chan_a_index],
+ zs_chan, zs_chan - 1))
+ continue;
+ ++zs_chan;
+ }
+ *pp = 0;
+
+ zs_channels_found = n;
+#ifdef CONFIG_PMAC_PBOOK
+ if (n)
+ pmu_register_sleep_notifier(&serial_sleep_notifier);
+#endif /* CONFIG_PMAC_PBOOK */
+}
+
+static struct tty_operations serial_ops = {
+ .open = rs_open,
+ .close = rs_close,
+ .write = rs_write,
+ .flush_chars = rs_flush_chars,
+ .write_room = rs_write_room,
+ .chars_in_buffer = rs_chars_in_buffer,
+ .flush_buffer = rs_flush_buffer,
+ .ioctl = rs_ioctl,
+ .throttle = rs_throttle,
+ .unthrottle = rs_unthrottle,
+ .set_termios = rs_set_termios,
+ .stop = rs_stop,
+ .start = rs_start,
+ .hangup = rs_hangup,
+ .break_ctl = rs_break,
+ .wait_until_sent = rs_wait_until_sent,
+ .read_proc = macserial_read_proc,
+ .tiocmget = rs_tiocmget,
+ .tiocmset = rs_tiocmset,
+};
+
+static int macserial_init(void)
+{
+ int channel, i;
+ struct mac_serial *info;
+
+ /* Find out how many Z8530 SCCs we have */
+ if (zs_chain == 0)
+ probe_sccs();
+
+ serial_driver = alloc_tty_driver(zs_channels_found);
+ if (!serial_driver)
+ return -ENOMEM;
+
+ /* XXX assume it's a powerbook if we have a via-pmu
+ *
+ * This is OK for core99 machines as well.
+ */
+ is_powerbook = find_devices("via-pmu") != 0;
+
+ /* Register the interrupt handler for each one
+ * We also request the OF resources here as probe_sccs()
+ * might be called too early for that
+ */
+ for (i = 0; i < zs_channels_found; ++i) {
+ struct device_node* ch = zs_soft[i].dev_node;
+ if (!request_OF_resource(ch, 0, NULL)) {
+ printk(KERN_ERR "macserial: can't request IO resource !\n");
+ put_tty_driver(serial_driver);
+ return -ENODEV;
+ }
+ if (zs_soft[i].has_dma) {
+ if (!request_OF_resource(ch, ch->n_addrs - 2, " (tx dma)")) {
+ printk(KERN_ERR "macserial: can't request TX DMA resource !\n");
+ zs_soft[i].has_dma = 0;
+ goto no_dma;
+ }
+ if (!request_OF_resource(ch, ch->n_addrs - 1, " (rx dma)")) {
+ release_OF_resource(ch, ch->n_addrs - 2);
+ printk(KERN_ERR "macserial: can't request RX DMA resource !\n");
+ zs_soft[i].has_dma = 0;
+ goto no_dma;
+ }
+ if (request_irq(zs_soft[i].tx_dma_irq, rs_txdma_irq, 0,
+ "SCC-txdma", &zs_soft[i]))
+ printk(KERN_ERR "macserial: can't get irq %d\n",
+ zs_soft[i].tx_dma_irq);
+ disable_irq(zs_soft[i].tx_dma_irq);
+ if (request_irq(zs_soft[i].rx_dma_irq, rs_rxdma_irq, 0,
+ "SCC-rxdma", &zs_soft[i]))
+ printk(KERN_ERR "macserial: can't get irq %d\n",
+ zs_soft[i].rx_dma_irq);
+ disable_irq(zs_soft[i].rx_dma_irq);
+ }
+no_dma:
+ if (request_irq(zs_soft[i].irq, rs_interrupt, 0,
+ "SCC", &zs_soft[i]))
+ printk(KERN_ERR "macserial: can't get irq %d\n",
+ zs_soft[i].irq);
+ disable_irq(zs_soft[i].irq);
+ }
+
+ show_serial_version();
+
+ /* Initialize the tty_driver structure */
+ /* Not all of this is exactly right for us. */
+
+ serial_driver->owner = THIS_MODULE;
+ serial_driver->driver_name = "macserial";
+ serial_driver->devfs_name = "tts/";
+ serial_driver->name = "ttyS";
+ serial_driver->major = TTY_MAJOR;
+ serial_driver->minor_start = 64;
+ serial_driver->type = TTY_DRIVER_TYPE_SERIAL;
+ serial_driver->subtype = SERIAL_TYPE_NORMAL;
+ serial_driver->init_termios = tty_std_termios;
+ serial_driver->init_termios.c_cflag =
+ B38400 | CS8 | CREAD | HUPCL | CLOCAL;
+ serial_driver->flags = TTY_DRIVER_REAL_RAW;
+ tty_set_operations(serial_driver, &serial_ops);
+
+ if (tty_register_driver(serial_driver))
+ printk(KERN_ERR "Error: couldn't register serial driver\n");
+
+ for (channel = 0; channel < zs_channels_found; ++channel) {
+#ifdef CONFIG_KGDB
+ if (zs_soft[channel].kgdb_channel) {
+ kgdb_interruptible(1);
+ continue;
+ }
+#endif
+ zs_soft[channel].clk_divisor = 16;
+/* -- we are not sure the SCC is powered ON at this point
+ zs_soft[channel].zs_baud = get_zsbaud(&zs_soft[channel]);
+*/
+ zs_soft[channel].zs_baud = 38400;
+
+ /* If console serial line, then enable interrupts. */
+ if (zs_soft[channel].is_cons) {
+ printk(KERN_INFO "macserial: console line, enabling "
+ "interrupt %d\n", zs_soft[channel].irq);
+ panic("macserial: console not supported yet !");
+ write_zsreg(zs_soft[channel].zs_channel, R1,
+ (EXT_INT_ENAB | INT_ALL_Rx | TxINT_ENAB));
+ write_zsreg(zs_soft[channel].zs_channel, R9,
+ (NV | MIE));
+ }
+ }
+
+ for (info = zs_chain, i = 0; info; info = info->zs_next, i++)
+ {
+ unsigned char* connector;
+ int lenp;
+
+#ifdef CONFIG_KGDB
+ if (info->kgdb_channel) {
+ continue;
+ }
+#endif
+ info->magic = SERIAL_MAGIC;
+ info->port = (int) info->zs_channel->control;
+ info->line = i;
+ info->tty = 0;
+ info->custom_divisor = 16;
+ info->timeout = 0;
+ info->close_delay = 50;
+ info->closing_wait = 3000;
+ info->x_char = 0;
+ info->event = 0;
+ info->count = 0;
+ info->blocked_open = 0;
+ INIT_WORK(&info->tqueue, do_softint, info);
+ spin_lock_init(&info->lock);
+ init_waitqueue_head(&info->open_wait);
+ init_waitqueue_head(&info->close_wait);
+ info->timeout = HZ;
+ printk(KERN_INFO "tty%02d at 0x%08x (irq = %d)", info->line,
+ info->port, info->irq);
+ printk(" is a Z8530 ESCC");
+ connector = get_property(info->dev_node, "AAPL,connector", &lenp);
+ if (connector)
+ printk(", port = %s", connector);
+ if (info->is_internal_modem)
+ printk(" (internal modem)");
+ if (info->is_irda)
+ printk(" (IrDA)");
+ printk("\n");
+ }
+ tmp_buf = 0;
+
+ return 0;
+}
+
+void macserial_cleanup(void)
+{
+ int i;
+ unsigned long flags;
+ struct mac_serial *info;
+
+ for (info = zs_chain, i = 0; info; info = info->zs_next, i++)
+ set_scc_power(info, 0);
+ spin_lock_irqsave(&info->lock, flags);
+ for (i = 0; i < zs_channels_found; ++i) {
+ free_irq(zs_soft[i].irq, &zs_soft[i]);
+ if (zs_soft[i].has_dma) {
+ free_irq(zs_soft[i].tx_dma_irq, &zs_soft[i]);
+ free_irq(zs_soft[i].rx_dma_irq, &zs_soft[i]);
+ }
+ release_OF_resource(zs_soft[i].dev_node, 0);
+ if (zs_soft[i].has_dma) {
+ struct device_node* ch = zs_soft[i].dev_node;
+ release_OF_resource(ch, ch->n_addrs - 2);
+ release_OF_resource(ch, ch->n_addrs - 1);
+ }
+ }
+ spin_unlock_irqrestore(&info->lock, flags);
+ tty_unregister_driver(serial_driver);
+ put_tty_driver(serial_driver);
+
+ if (tmp_buf) {
+ free_page((unsigned long) tmp_buf);
+ tmp_buf = 0;
+ }
+
+#ifdef CONFIG_PMAC_PBOOK
+ if (zs_channels_found)
+ pmu_unregister_sleep_notifier(&serial_sleep_notifier);
+#endif /* CONFIG_PMAC_PBOOK */
+}
+
+module_init(macserial_init);
+module_exit(macserial_cleanup);
+MODULE_LICENSE("GPL");
+
+#if 0
+/*
+ * register_serial and unregister_serial allows for serial ports to be
+ * configured at run-time, to support PCMCIA modems.
+ */
+/* PowerMac: Unused at this time, just here to make things link. */
+int register_serial(struct serial_struct *req)
+{
+ return -1;
+}
+
+void unregister_serial(int line)
+{
+ return;
+}
+#endif
+
+/*
+ * ------------------------------------------------------------
+ * Serial console driver
+ * ------------------------------------------------------------
+ */
+#ifdef CONFIG_SERIAL_CONSOLE
+
+/*
+ * Print a string to the serial port trying not to disturb
+ * any possible real use of the port...
+ */
+static void serial_console_write(struct console *co, const char *s,
+ unsigned count)
+{
+ struct mac_serial *info = zs_soft + co->index;
+ int i;
+
+ /* Turn of interrupts and enable the transmitter. */
+ write_zsreg(info->zs_channel, R1, info->curregs[1] & ~TxINT_ENAB);
+ write_zsreg(info->zs_channel, R5, info->curregs[5] | TxENAB | RTS | DTR);
+
+ for (i=0; i<count; i++) {
+ /* Wait for the transmit buffer to empty. */
+ while ((read_zsreg(info->zs_channel, 0) & Tx_BUF_EMP) == 0) {
+ eieio();
+ }
+
+ write_zsdata(info->zs_channel, s[i]);
+ if (s[i] == 10) {
+ while ((read_zsreg(info->zs_channel, 0) & Tx_BUF_EMP)
+ == 0)
+ eieio();
+
+ write_zsdata(info->zs_channel, 13);
+ }
+ }
+
+ /* Restore the values in the registers. */
+ write_zsreg(info->zs_channel, R1, info->curregs[1]);
+ /* Don't disable the transmitter. */
+}
+
+static struct tty_driver *serial_driver;
+
+static struct tty_driver *serial_console_device(struct console *c, int *index)
+{
+ *index = c->index;
+ return serial_driver;
+}
+
+/*
+ * Setup initial baud/bits/parity. We do two things here:
+ * - construct a cflag setting for the first rs_open()
+ * - initialize the serial port
+ * Return non-zero if we didn't find a serial port.
+ */
+static int __init serial_console_setup(struct console *co, char *options)
+{
+ struct mac_serial *info;
+ int baud = 38400;
+ int bits = 8;
+ int parity = 'n';
+ int cflag = CREAD | HUPCL | CLOCAL;
+ int brg;
+ char *s;
+ long flags;
+
+ /* Find out how many Z8530 SCCs we have */
+ if (zs_chain == 0)
+ probe_sccs();
+
+ if (zs_chain == 0)
+ return -1;
+
+ /* Do we have the device asked for? */
+ if (co->index >= zs_channels_found)
+ return -1;
+ info = zs_soft + co->index;
+
+ set_scc_power(info, 1);
+
+ /* Reset the channel */
+ write_zsreg(info->zs_channel, R9, CHRA);
+
+ if (options) {
+ baud = simple_strtoul(options, NULL, 10);
+ s = options;
+ while(*s >= '0' && *s <= '9')
+ s++;
+ if (*s)
+ parity = *s++;
+ if (*s)
+ bits = *s - '0';
+ }
+
+ /*
+ * Now construct a cflag setting.
+ */
+ switch(baud) {
+ case 1200:
+ cflag |= B1200;
+ break;
+ case 2400:
+ cflag |= B2400;
+ break;
+ case 4800:
+ cflag |= B4800;
+ break;
+ case 9600:
+ cflag |= B9600;
+ break;
+ case 19200:
+ cflag |= B19200;
+ break;
+ case 57600:
+ cflag |= B57600;
+ break;
+ case 115200:
+ cflag |= B115200;
+ break;
+ case 38400:
+ default:
+ cflag |= B38400;
+ break;
+ }
+ switch(bits) {
+ case 7:
+ cflag |= CS7;
+ break;
+ default:
+ case 8:
+ cflag |= CS8;
+ break;
+ }
+ switch(parity) {
+ case 'o': case 'O':
+ cflag |= PARENB | PARODD;
+ break;
+ case 'e': case 'E':
+ cflag |= PARENB;
+ break;
+ }
+ co->cflag = cflag;
+
+ spin_lock_irqsave(&info->lock, flags);
+ memset(info->curregs, 0, sizeof(info->curregs));
+
+ info->zs_baud = baud;
+ info->clk_divisor = 16;
+ switch (info->zs_baud) {
+ case ZS_CLOCK/16: /* 230400 */
+ info->curregs[4] = X16CLK;
+ info->curregs[11] = 0;
+ break;
+ case ZS_CLOCK/32: /* 115200 */
+ info->curregs[4] = X32CLK;
+ info->curregs[11] = 0;
+ break;
+ default:
+ info->curregs[4] = X16CLK;
+ info->curregs[11] = TCBR | RCBR;
+ brg = BPS_TO_BRG(info->zs_baud, ZS_CLOCK/info->clk_divisor);
+ info->curregs[12] = (brg & 255);
+ info->curregs[13] = ((brg >> 8) & 255);
+ info->curregs[14] = BRENABL;
+ }
+
+ /* byte size and parity */
+ info->curregs[3] &= ~RxNBITS_MASK;
+ info->curregs[5] &= ~TxNBITS_MASK;
+ switch (cflag & CSIZE) {
+ case CS5:
+ info->curregs[3] |= Rx5;
+ info->curregs[5] |= Tx5;
+ break;
+ case CS6:
+ info->curregs[3] |= Rx6;
+ info->curregs[5] |= Tx6;
+ break;
+ case CS7:
+ info->curregs[3] |= Rx7;
+ info->curregs[5] |= Tx7;
+ break;
+ case CS8:
+ default: /* defaults to 8 bits */
+ info->curregs[3] |= Rx8;
+ info->curregs[5] |= Tx8;
+ break;
+ }
+ info->curregs[5] |= TxENAB | RTS | DTR;
+ info->pendregs[3] = info->curregs[3];
+ info->pendregs[5] = info->curregs[5];
+
+ info->curregs[4] &= ~(SB_MASK | PAR_ENA | PAR_EVEN);
+ if (cflag & CSTOPB) {
+ info->curregs[4] |= SB2;
+ } else {
+ info->curregs[4] |= SB1;
+ }
+ if (cflag & PARENB) {
+ info->curregs[4] |= PAR_ENA;
+ if (!(cflag & PARODD)) {
+ info->curregs[4] |= PAR_EVEN;
+ }
+ }
+ info->pendregs[4] = info->curregs[4];
+
+ if (!(cflag & CLOCAL)) {
+ if (!(info->curregs[15] & DCDIE))
+ info->read_reg_zero = read_zsreg(info->zs_channel, 0);
+ info->curregs[15] |= DCDIE;
+ } else
+ info->curregs[15] &= ~DCDIE;
+ if (cflag & CRTSCTS) {
+ info->curregs[15] |= CTSIE;
+ if ((read_zsreg(info->zs_channel, 0) & CTS) != 0)
+ info->tx_stopped = 1;
+ } else {
+ info->curregs[15] &= ~CTSIE;
+ info->tx_stopped = 0;
+ }
+ info->pendregs[15] = info->curregs[15];
+
+ /* Load up the new values */
+ load_zsregs(info->zs_channel, info->curregs);
+
+ spin_unlock_irqrestore(&info->lock, flags);
+
+ return 0;
+}
+
+static struct console sercons = {
+ .name = "ttyS",
+ .write = serial_console_write,
+ .device = serial_console_device,
+ .setup = serial_console_setup,
+ .flags = CON_PRINTBUFFER,
+ .index = -1,
+};
+
+/*
+ * Register console.
+ */
+static void __init mac_scc_console_init(void)
+{
+ register_console(&sercons);
+}
+console_initcall(mac_scc_console_init);
+
+#endif /* ifdef CONFIG_SERIAL_CONSOLE */
+
+#ifdef CONFIG_KGDB
+/* These are for receiving and sending characters under the kgdb
+ * source level kernel debugger.
+ */
+void putDebugChar(char kgdb_char)
+{
+ struct mac_zschannel *chan = zs_kgdbchan;
+ while ((read_zsreg(chan, 0) & Tx_BUF_EMP) == 0)
+ udelay(5);
+ write_zsdata(chan, kgdb_char);
+}
+
+char getDebugChar(void)
+{
+ struct mac_zschannel *chan = zs_kgdbchan;
+ while((read_zsreg(chan, 0) & Rx_CH_AV) == 0)
+ eieio(); /*barrier();*/
+ return read_zsdata(chan);
+}
+
+void kgdb_interruptible(int yes)
+{
+ struct mac_zschannel *chan = zs_kgdbchan;
+ int one, nine;
+ nine = read_zsreg(chan, 9);
+ if (yes == 1) {
+ one = EXT_INT_ENAB|INT_ALL_Rx;
+ nine |= MIE;
+ printk("turning serial ints on\n");
+ } else {
+ one = RxINT_DISAB;
+ nine &= ~MIE;
+ printk("turning serial ints off\n");
+ }
+ write_zsreg(chan, 1, one);
+ write_zsreg(chan, 9, nine);
+}
+
+/* This sets up the serial port we're using, and turns on
+ * interrupts for that channel, so kgdb is usable once we're done.
+ */
+static inline void kgdb_chaninit(struct mac_zschannel *ms, int intson, int bps)
+{
+ int brg;
+ int i, x;
+ volatile char *sccc = ms->control;
+ brg = BPS_TO_BRG(bps, ZS_CLOCK/16);
+ printk("setting bps on kgdb line to %d [brg=%x]\n", bps, brg);
+ for (i = 20000; i != 0; --i) {
+ x = *sccc; eieio();
+ }
+ for (i = 0; i < sizeof(scc_inittab); ++i) {
+ write_zsreg(ms, scc_inittab[i], scc_inittab[i+1]);
+ i++;
+ }
+}
+
+/* This is called at boot time to prime the kgdb serial debugging
+ * serial line. The 'tty_num' argument is 0 for /dev/ttya and 1
+ * for /dev/ttyb which is determined in setup_arch() from the
+ * boot command line flags.
+ * XXX at the moment probably only channel A will work
+ */
+void __init zs_kgdb_hook(int tty_num)
+{
+ /* Find out how many Z8530 SCCs we have */
+ if (zs_chain == 0)
+ probe_sccs();
+
+ set_scc_power(&zs_soft[tty_num], 1);
+
+ zs_kgdbchan = zs_soft[tty_num].zs_channel;
+ zs_soft[tty_num].change_needed = 0;
+ zs_soft[tty_num].clk_divisor = 16;
+ zs_soft[tty_num].zs_baud = 38400;
+ zs_soft[tty_num].kgdb_channel = 1; /* This runs kgdb */
+
+ /* Turn on transmitter/receiver at 8-bits/char */
+ kgdb_chaninit(zs_soft[tty_num].zs_channel, 1, 38400);
+ printk("KGDB: on channel %d initialized\n", tty_num);
+ set_debug_traps(); /* init stub */
+}
+#endif /* ifdef CONFIG_KGDB */
+
+#ifdef CONFIG_PMAC_PBOOK
+/*
+ * notify clients before sleep and reset bus afterwards
+ */
+int
+serial_notify_sleep(struct pmu_sleep_notifier *self, int when)
+{
+ int i;
+
+ switch (when) {
+ case PBOOK_SLEEP_REQUEST:
+ case PBOOK_SLEEP_REJECT:
+ break;
+
+ case PBOOK_SLEEP_NOW:
+ for (i=0; i<zs_channels_found; i++) {
+ struct mac_serial *info = &zs_soft[i];
+ if (info->flags & ZILOG_INITIALIZED) {
+ shutdown(info);
+ info->flags |= ZILOG_SLEEPING;
+ }
+ }
+ break;
+ case PBOOK_WAKE:
+ for (i=0; i<zs_channels_found; i++) {
+ struct mac_serial *info = &zs_soft[i];
+ if (info->flags & ZILOG_SLEEPING) {
+ info->flags &= ~ZILOG_SLEEPING;
+ startup(info);
+ }
+ }
+ break;
+ }
+ return PBOOK_SLEEP_OK;
+}
+#endif /* CONFIG_PMAC_PBOOK */
diff --git a/drivers/macintosh/macserial.h b/drivers/macintosh/macserial.h
new file mode 100644
index 000000000000..bade11a7a5c3
--- /dev/null
+++ b/drivers/macintosh/macserial.h
@@ -0,0 +1,461 @@
+/*
+ * macserial.h: Definitions for the Macintosh Z8530 serial driver.
+ *
+ * Adapted from drivers/sbus/char/sunserial.h by Paul Mackerras.
+ *
+ * Copyright (C) 1996 Paul Mackerras (Paul.Mackerras@cs.anu.edu.au)
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+#ifndef _MACSERIAL_H
+#define _MACSERIAL_H
+
+#include <linux/spinlock.h>
+
+#define NUM_ZSREGS 16
+
+struct serial_struct {
+ int type;
+ int line;
+ int port;
+ int irq;
+ int flags;
+ int xmit_fifo_size;
+ int custom_divisor;
+ int baud_base;
+ unsigned short close_delay;
+ char reserved_char[2];
+ int hub6;
+ unsigned short closing_wait; /* time to wait before closing */
+ unsigned short closing_wait2; /* no longer used... */
+ int reserved[4];
+};
+
+/*
+ * For the close wait times, 0 means wait forever for serial port to
+ * flush its output. 65535 means don't wait at all.
+ */
+#define ZILOG_CLOSING_WAIT_INF 0
+#define ZILOG_CLOSING_WAIT_NONE 65535
+
+/*
+ * Definitions for ZILOG_struct (and serial_struct) flags field
+ */
+#define ZILOG_HUP_NOTIFY 0x0001 /* Notify getty on hangups and closes
+ * on the callout port */
+#define ZILOG_FOURPORT 0x0002 /* Set OU1, OUT2 per AST Fourport settings */
+#define ZILOG_SAK 0x0004 /* Secure Attention Key (Orange book) */
+#define ZILOG_SPLIT_TERMIOS 0x0008 /* Separate termios for dialin/callout */
+
+#define ZILOG_SPD_MASK 0x0030
+#define ZILOG_SPD_HI 0x0010 /* Use 56000 instead of 38400 bps */
+
+#define ZILOG_SPD_VHI 0x0020 /* Use 115200 instead of 38400 bps */
+#define ZILOG_SPD_CUST 0x0030 /* Use user-specified divisor */
+
+#define ZILOG_SKIP_TEST 0x0040 /* Skip UART test during autoconfiguration */
+#define ZILOG_AUTO_IRQ 0x0080 /* Do automatic IRQ during autoconfiguration */
+#define ZILOG_SESSION_LOCKOUT 0x0100 /* Lock out cua opens based on session */
+#define ZILOG_PGRP_LOCKOUT 0x0200 /* Lock out cua opens based on pgrp */
+#define ZILOG_CALLOUT_NOHUP 0x0400 /* Don't do hangups for cua device */
+
+#define ZILOG_FLAGS 0x0FFF /* Possible legal ZILOG flags */
+#define ZILOG_USR_MASK 0x0430 /* Legal flags that non-privileged
+ * users can set or reset */
+
+/* Internal flags used only by kernel/chr_drv/serial.c */
+#define ZILOG_INITIALIZED 0x80000000 /* Serial port was initialized */
+#define ZILOG_CALLOUT_ACTIVE 0x40000000 /* Call out device is active */
+#define ZILOG_NORMAL_ACTIVE 0x20000000 /* Normal device is active */
+#define ZILOG_BOOT_AUTOCONF 0x10000000 /* Autoconfigure port on bootup */
+#define ZILOG_CLOSING 0x08000000 /* Serial port is closing */
+#define ZILOG_CTS_FLOW 0x04000000 /* Do CTS flow control */
+#define ZILOG_CHECK_CD 0x02000000 /* i.e., CLOCAL */
+#define ZILOG_SLEEPING 0x01000000 /* have shut it down for sleep */
+
+/* Software state per channel */
+
+#ifdef __KERNEL__
+/*
+ * This is our internal structure for each serial port's state.
+ *
+ * Many fields are paralleled by the structure used by the serial_struct
+ * structure.
+ *
+ * For definitions of the flags field, see tty.h
+ */
+
+struct mac_serial;
+
+struct mac_zschannel {
+ volatile unsigned char* control;
+ volatile unsigned char* data;
+ spinlock_t lock;
+ /* Used for debugging */
+ struct mac_serial* parent;
+};
+
+struct mac_dma {
+ volatile struct dbdma_regs dma;
+ volatile unsigned short res_count;
+ volatile unsigned short command;
+ volatile unsigned int buf_addr;
+};
+
+struct mac_serial {
+ struct mac_serial *zs_next; /* For IRQ servicing chain */
+ struct mac_zschannel *zs_channel; /* Channel registers */
+ struct mac_zschannel *zs_chan_a; /* A side registers */
+ unsigned char read_reg_zero;
+ struct device_node* dev_node;
+ spinlock_t lock;
+
+ char soft_carrier; /* Use soft carrier on this channel */
+ char break_abort; /* Is serial console in, so process brk/abrt */
+ char kgdb_channel; /* Kgdb is running on this channel */
+ char is_cons; /* Is this our console. */
+ char is_internal_modem; /* is connected to an internal modem */
+ char is_irda; /* is connected to an IrDA codec */
+ int port_type; /* Port type for pmac_feature */
+ unsigned char tx_active; /* character is being xmitted */
+ unsigned char tx_stopped; /* output is suspended */
+ unsigned char power_wait; /* waiting for power-up delay to expire */
+
+ /* We need to know the current clock divisor
+ * to read the bps rate the chip has currently
+ * loaded.
+ */
+ unsigned char clk_divisor; /* May be 1, 16, 32, or 64 */
+ int zs_baud;
+
+ /* Current write register values */
+ unsigned char curregs[NUM_ZSREGS];
+
+ /* Values we need to set next opportunity */
+ unsigned char pendregs[NUM_ZSREGS];
+
+ char change_needed;
+
+ int magic;
+ int baud_base;
+ int port;
+ int irq;
+ int flags; /* defined in tty.h */
+ int type; /* UART type */
+ struct tty_struct *tty;
+ int read_status_mask;
+ int ignore_status_mask;
+ int timeout;
+ int xmit_fifo_size;
+ int custom_divisor;
+ int x_char; /* xon/xoff character */
+ int close_delay;
+ unsigned short closing_wait;
+ unsigned short closing_wait2;
+ unsigned long event;
+ unsigned long last_active;
+ int line;
+ int count; /* # of fd on device */
+ int blocked_open; /* # of blocked opens */
+ unsigned char *xmit_buf;
+ int xmit_head;
+ int xmit_tail;
+ int xmit_cnt;
+ struct work_struct tqueue;
+ wait_queue_head_t open_wait;
+ wait_queue_head_t close_wait;
+
+ volatile struct dbdma_regs *tx_dma;
+ int tx_dma_irq;
+ volatile struct dbdma_cmd *tx_cmds;
+ volatile struct mac_dma *rx;
+ int rx_dma_irq;
+ volatile struct dbdma_cmd **rx_cmds;
+ unsigned char **rx_char_buf;
+ unsigned char **rx_flag_buf;
+#define RX_BUF_SIZE 256
+ int rx_nbuf;
+ int rx_done_bytes;
+ int rx_ubuf;
+ int rx_fbuf;
+#define RX_NO_FBUF (-1)
+ int rx_cbuf;
+ spinlock_t rx_dma_lock;
+ int has_dma;
+ int dma_initted;
+ void *dma_priv;
+ struct timer_list poll_dma_timer;
+#define RX_DMA_TIMER (jiffies + 10*HZ/1000)
+
+ struct timer_list powerup_timer;
+};
+
+
+#define SERIAL_MAGIC 0x5301
+
+/*
+ * The size of the serial xmit buffer is 1 page, or 4096 bytes
+ */
+#define SERIAL_XMIT_SIZE 4096
+
+/*
+ * Events are used to schedule things to happen at timer-interrupt
+ * time, instead of at rs interrupt time.
+ */
+#define RS_EVENT_WRITE_WAKEUP 0
+
+#endif /* __KERNEL__ */
+
+/* Conversion routines to/from brg time constants from/to bits
+ * per second.
+ */
+#define BRG_TO_BPS(brg, freq) ((freq) / 2 / ((brg) + 2))
+#define BPS_TO_BRG(bps, freq) ((((freq) + (bps)) / (2 * (bps))) - 2)
+
+/* The Zilog register set */
+
+#define FLAG 0x7e
+
+/* Write Register 0 */
+#define R0 0 /* Register selects */
+#define R1 1
+#define R2 2
+#define R3 3
+#define R4 4
+#define R5 5
+#define R6 6
+#define R7 7
+#define R8 8
+#define R9 9
+#define R10 10
+#define R11 11
+#define R12 12
+#define R13 13
+#define R14 14
+#define R15 15
+
+#define NULLCODE 0 /* Null Code */
+#define POINT_HIGH 0x8 /* Select upper half of registers */
+#define RES_EXT_INT 0x10 /* Reset Ext. Status Interrupts */
+#define SEND_ABORT 0x18 /* HDLC Abort */
+#define RES_RxINT_FC 0x20 /* Reset RxINT on First Character */
+#define RES_Tx_P 0x28 /* Reset TxINT Pending */
+#define ERR_RES 0x30 /* Error Reset */
+#define RES_H_IUS 0x38 /* Reset highest IUS */
+
+#define RES_Rx_CRC 0x40 /* Reset Rx CRC Checker */
+#define RES_Tx_CRC 0x80 /* Reset Tx CRC Checker */
+#define RES_EOM_L 0xC0 /* Reset EOM latch */
+
+/* Write Register 1 */
+
+#define EXT_INT_ENAB 0x1 /* Ext Int Enable */
+#define TxINT_ENAB 0x2 /* Tx Int Enable */
+#define PAR_SPEC 0x4 /* Parity is special condition */
+
+#define RxINT_DISAB 0 /* Rx Int Disable */
+#define RxINT_FCERR 0x8 /* Rx Int on First Character Only or Error */
+#define INT_ALL_Rx 0x10 /* Int on all Rx Characters or error */
+#define INT_ERR_Rx 0x18 /* Int on error only */
+
+#define WT_RDY_RT 0x20 /* W/Req reflects recv if 1, xmit if 0 */
+#define WT_FN_RDYFN 0x40 /* W/Req pin is DMA request if 1, wait if 0 */
+#define WT_RDY_ENAB 0x80 /* Enable W/Req pin */
+
+/* Write Register #2 (Interrupt Vector) */
+
+/* Write Register 3 */
+
+#define RxENABLE 0x1 /* Rx Enable */
+#define SYNC_L_INH 0x2 /* Sync Character Load Inhibit */
+#define ADD_SM 0x4 /* Address Search Mode (SDLC) */
+#define RxCRC_ENAB 0x8 /* Rx CRC Enable */
+#define ENT_HM 0x10 /* Enter Hunt Mode */
+#define AUTO_ENAB 0x20 /* Auto Enables */
+#define Rx5 0x0 /* Rx 5 Bits/Character */
+#define Rx7 0x40 /* Rx 7 Bits/Character */
+#define Rx6 0x80 /* Rx 6 Bits/Character */
+#define Rx8 0xc0 /* Rx 8 Bits/Character */
+#define RxNBITS_MASK 0xc0
+
+/* Write Register 4 */
+
+#define PAR_ENA 0x1 /* Parity Enable */
+#define PAR_EVEN 0x2 /* Parity Even/Odd* */
+
+#define SYNC_ENAB 0 /* Sync Modes Enable */
+#define SB1 0x4 /* 1 stop bit/char */
+#define SB15 0x8 /* 1.5 stop bits/char */
+#define SB2 0xc /* 2 stop bits/char */
+#define SB_MASK 0xc
+
+#define MONSYNC 0 /* 8 Bit Sync character */
+#define BISYNC 0x10 /* 16 bit sync character */
+#define SDLC 0x20 /* SDLC Mode (01111110 Sync Flag) */
+#define EXTSYNC 0x30 /* External Sync Mode */
+
+#define X1CLK 0x0 /* x1 clock mode */
+#define X16CLK 0x40 /* x16 clock mode */
+#define X32CLK 0x80 /* x32 clock mode */
+#define X64CLK 0xC0 /* x64 clock mode */
+#define XCLK_MASK 0xC0
+
+/* Write Register 5 */
+
+#define TxCRC_ENAB 0x1 /* Tx CRC Enable */
+#define RTS 0x2 /* RTS */
+#define SDLC_CRC 0x4 /* SDLC/CRC-16 */
+#define TxENAB 0x8 /* Tx Enable */
+#define SND_BRK 0x10 /* Send Break */
+#define Tx5 0x0 /* Tx 5 bits (or less)/character */
+#define Tx7 0x20 /* Tx 7 bits/character */
+#define Tx6 0x40 /* Tx 6 bits/character */
+#define Tx8 0x60 /* Tx 8 bits/character */
+#define TxNBITS_MASK 0x60
+#define DTR 0x80 /* DTR */
+
+/* Write Register 6 (Sync bits 0-7/SDLC Address Field) */
+
+/* Write Register 7 (Sync bits 8-15/SDLC 01111110) */
+
+/* Write Register 7' (Some enhanced feature control) */
+#define ENEXREAD 0x40 /* Enable read of some write registers */
+
+/* Write Register 8 (transmit buffer) */
+
+/* Write Register 9 (Master interrupt control) */
+#define VIS 1 /* Vector Includes Status */
+#define NV 2 /* No Vector */
+#define DLC 4 /* Disable Lower Chain */
+#define MIE 8 /* Master Interrupt Enable */
+#define STATHI 0x10 /* Status high */
+#define NORESET 0 /* No reset on write to R9 */
+#define CHRB 0x40 /* Reset channel B */
+#define CHRA 0x80 /* Reset channel A */
+#define FHWRES 0xc0 /* Force hardware reset */
+
+/* Write Register 10 (misc control bits) */
+#define BIT6 1 /* 6 bit/8bit sync */
+#define LOOPMODE 2 /* SDLC Loop mode */
+#define ABUNDER 4 /* Abort/flag on SDLC xmit underrun */
+#define MARKIDLE 8 /* Mark/flag on idle */
+#define GAOP 0x10 /* Go active on poll */
+#define NRZ 0 /* NRZ mode */
+#define NRZI 0x20 /* NRZI mode */
+#define FM1 0x40 /* FM1 (transition = 1) */
+#define FM0 0x60 /* FM0 (transition = 0) */
+#define CRCPS 0x80 /* CRC Preset I/O */
+
+/* Write Register 11 (Clock Mode control) */
+#define TRxCXT 0 /* TRxC = Xtal output */
+#define TRxCTC 1 /* TRxC = Transmit clock */
+#define TRxCBR 2 /* TRxC = BR Generator Output */
+#define TRxCDP 3 /* TRxC = DPLL output */
+#define TRxCOI 4 /* TRxC O/I */
+#define TCRTxCP 0 /* Transmit clock = RTxC pin */
+#define TCTRxCP 8 /* Transmit clock = TRxC pin */
+#define TCBR 0x10 /* Transmit clock = BR Generator output */
+#define TCDPLL 0x18 /* Transmit clock = DPLL output */
+#define RCRTxCP 0 /* Receive clock = RTxC pin */
+#define RCTRxCP 0x20 /* Receive clock = TRxC pin */
+#define RCBR 0x40 /* Receive clock = BR Generator output */
+#define RCDPLL 0x60 /* Receive clock = DPLL output */
+#define RTxCX 0x80 /* RTxC Xtal/No Xtal */
+
+/* Write Register 12 (lower byte of baud rate generator time constant) */
+
+/* Write Register 13 (upper byte of baud rate generator time constant) */
+
+/* Write Register 14 (Misc control bits) */
+#define BRENABL 1 /* Baud rate generator enable */
+#define BRSRC 2 /* Baud rate generator source */
+#define DTRREQ 4 /* DTR/Request function */
+#define AUTOECHO 8 /* Auto Echo */
+#define LOOPBAK 0x10 /* Local loopback */
+#define SEARCH 0x20 /* Enter search mode */
+#define RMC 0x40 /* Reset missing clock */
+#define DISDPLL 0x60 /* Disable DPLL */
+#define SSBR 0x80 /* Set DPLL source = BR generator */
+#define SSRTxC 0xa0 /* Set DPLL source = RTxC */
+#define SFMM 0xc0 /* Set FM mode */
+#define SNRZI 0xe0 /* Set NRZI mode */
+
+/* Write Register 15 (external/status interrupt control) */
+#define EN85C30 1 /* Enable some 85c30-enhanced registers */
+#define ZCIE 2 /* Zero count IE */
+#define ENSTFIFO 4 /* Enable status FIFO (SDLC) */
+#define DCDIE 8 /* DCD IE */
+#define SYNCIE 0x10 /* Sync/hunt IE */
+#define CTSIE 0x20 /* CTS IE */
+#define TxUIE 0x40 /* Tx Underrun/EOM IE */
+#define BRKIE 0x80 /* Break/Abort IE */
+
+
+/* Read Register 0 */
+#define Rx_CH_AV 0x1 /* Rx Character Available */
+#define ZCOUNT 0x2 /* Zero count */
+#define Tx_BUF_EMP 0x4 /* Tx Buffer empty */
+#define DCD 0x8 /* DCD */
+#define SYNC_HUNT 0x10 /* Sync/hunt */
+#define CTS 0x20 /* CTS */
+#define TxEOM 0x40 /* Tx underrun */
+#define BRK_ABRT 0x80 /* Break/Abort */
+
+/* Read Register 1 */
+#define ALL_SNT 0x1 /* All sent */
+/* Residue Data for 8 Rx bits/char programmed */
+#define RES3 0x8 /* 0/3 */
+#define RES4 0x4 /* 0/4 */
+#define RES5 0xc /* 0/5 */
+#define RES6 0x2 /* 0/6 */
+#define RES7 0xa /* 0/7 */
+#define RES8 0x6 /* 0/8 */
+#define RES18 0xe /* 1/8 */
+#define RES28 0x0 /* 2/8 */
+/* Special Rx Condition Interrupts */
+#define PAR_ERR 0x10 /* Parity error */
+#define Rx_OVR 0x20 /* Rx Overrun Error */
+#define FRM_ERR 0x40 /* CRC/Framing Error */
+#define END_FR 0x80 /* End of Frame (SDLC) */
+
+/* Read Register 2 (channel b only) - Interrupt vector */
+#define CHB_Tx_EMPTY 0x00
+#define CHB_EXT_STAT 0x02
+#define CHB_Rx_AVAIL 0x04
+#define CHB_SPECIAL 0x06
+#define CHA_Tx_EMPTY 0x08
+#define CHA_EXT_STAT 0x0a
+#define CHA_Rx_AVAIL 0x0c
+#define CHA_SPECIAL 0x0e
+#define STATUS_MASK 0x06
+
+/* Read Register 3 (interrupt pending register) ch a only */
+#define CHBEXT 0x1 /* Channel B Ext/Stat IP */
+#define CHBTxIP 0x2 /* Channel B Tx IP */
+#define CHBRxIP 0x4 /* Channel B Rx IP */
+#define CHAEXT 0x8 /* Channel A Ext/Stat IP */
+#define CHATxIP 0x10 /* Channel A Tx IP */
+#define CHARxIP 0x20 /* Channel A Rx IP */
+
+/* Read Register 8 (receive data register) */
+
+/* Read Register 10 (misc status bits) */
+#define ONLOOP 2 /* On loop */
+#define LOOPSEND 0x10 /* Loop sending */
+#define CLK2MIS 0x40 /* Two clocks missing */
+#define CLK1MIS 0x80 /* One clock missing */
+
+/* Read Register 12 (lower byte of baud rate generator constant) */
+
+/* Read Register 13 (upper byte of baud rate generator constant) */
+
+/* Read Register 15 (value of WR 15) */
+
+/* Misc macros */
+#define ZS_CLEARERR(channel) (write_zsreg(channel, 0, ERR_RES))
+#define ZS_CLEARFIFO(channel) do { volatile unsigned char garbage; \
+ garbage = read_zsdata(channel); \
+ garbage = read_zsdata(channel); \
+ garbage = read_zsdata(channel); \
+ } while(0)
+
+#endif /* !(_MACSERIAL_H) */
diff --git a/drivers/macintosh/mediabay.c b/drivers/macintosh/mediabay.c
new file mode 100644
index 000000000000..b8b5a2f1485a
--- /dev/null
+++ b/drivers/macintosh/mediabay.c
@@ -0,0 +1,851 @@
+/*
+ * Driver for the media bay on the PowerBook 3400 and 2400.
+ *
+ * Copyright (C) 1998 Paul Mackerras.
+ *
+ * Various evolutions by Benjamin Herrenschmidt & Henry Worth
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/hdreg.h>
+#include <linux/stddef.h>
+#include <linux/init.h>
+#include <linux/ide.h>
+#include <asm/prom.h>
+#include <asm/pgtable.h>
+#include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/pmac_feature.h>
+#include <asm/mediabay.h>
+#include <asm/sections.h>
+#include <asm/ohare.h>
+#include <asm/heathrow.h>
+#include <asm/keylargo.h>
+#include <linux/adb.h>
+#include <linux/pmu.h>
+
+
+#define MB_DEBUG
+#define MB_IGNORE_SIGNALS
+
+#ifdef MB_DEBUG
+#define MBDBG(fmt, arg...) printk(KERN_INFO fmt , ## arg)
+#else
+#define MBDBG(fmt, arg...) do { } while (0)
+#endif
+
+#define MB_FCR32(bay, r) ((bay)->base + ((r) >> 2))
+#define MB_FCR8(bay, r) (((volatile u8 __iomem *)((bay)->base)) + (r))
+
+#define MB_IN32(bay,r) (in_le32(MB_FCR32(bay,r)))
+#define MB_OUT32(bay,r,v) (out_le32(MB_FCR32(bay,r), (v)))
+#define MB_BIS(bay,r,v) (MB_OUT32((bay), (r), MB_IN32((bay), r) | (v)))
+#define MB_BIC(bay,r,v) (MB_OUT32((bay), (r), MB_IN32((bay), r) & ~(v)))
+#define MB_IN8(bay,r) (in_8(MB_FCR8(bay,r)))
+#define MB_OUT8(bay,r,v) (out_8(MB_FCR8(bay,r), (v)))
+
+struct media_bay_info;
+
+struct mb_ops {
+ char* name;
+ void (*init)(struct media_bay_info *bay);
+ u8 (*content)(struct media_bay_info *bay);
+ void (*power)(struct media_bay_info *bay, int on_off);
+ int (*setup_bus)(struct media_bay_info *bay, u8 device_id);
+ void (*un_reset)(struct media_bay_info *bay);
+ void (*un_reset_ide)(struct media_bay_info *bay);
+};
+
+struct media_bay_info {
+ u32 __iomem *base;
+ int content_id;
+ int state;
+ int last_value;
+ int value_count;
+ int timer;
+ struct macio_dev *mdev;
+ struct mb_ops* ops;
+ int index;
+ int cached_gpio;
+ int sleeping;
+ struct semaphore lock;
+#ifdef CONFIG_BLK_DEV_IDE
+ void __iomem *cd_base;
+ int cd_index;
+ int cd_irq;
+ int cd_retry;
+#endif
+};
+
+#define MAX_BAYS 2
+
+static struct media_bay_info media_bays[MAX_BAYS];
+int media_bay_count = 0;
+
+#ifdef CONFIG_BLK_DEV_IDE
+/* check the busy bit in the media-bay ide interface
+ (assumes the media-bay contains an ide device) */
+#define MB_IDE_READY(i) ((readb(media_bays[i].cd_base + 0x70) & 0x80) == 0)
+#endif
+
+/*
+ * Wait that number of ms between each step in normal polling mode
+ */
+#define MB_POLL_DELAY 25
+
+/*
+ * Consider the media-bay ID value stable if it is the same for
+ * this number of milliseconds
+ */
+#define MB_STABLE_DELAY 100
+
+/* Wait after powering up the media bay this delay in ms
+ * timeout bumped for some powerbooks
+ */
+#define MB_POWER_DELAY 200
+
+/*
+ * Hold the media-bay reset signal true for this many ticks
+ * after a device is inserted before releasing it.
+ */
+#define MB_RESET_DELAY 50
+
+/*
+ * Wait this long after the reset signal is released and before doing
+ * further operations. After this delay, the IDE reset signal is released
+ * too for an IDE device
+ */
+#define MB_SETUP_DELAY 100
+
+/*
+ * Wait this many ticks after an IDE device (e.g. CD-ROM) is inserted
+ * (or until the device is ready) before waiting for busy bit to disappear
+ */
+#define MB_IDE_WAIT 1000
+
+/*
+ * Timeout waiting for busy bit of an IDE device to go down
+ */
+#define MB_IDE_TIMEOUT 5000
+
+/*
+ * Max retries of the full power up/down sequence for an IDE device
+ */
+#define MAX_CD_RETRIES 3
+
+/*
+ * States of a media bay
+ */
+enum {
+ mb_empty = 0, /* Idle */
+ mb_powering_up, /* power bit set, waiting MB_POWER_DELAY */
+ mb_enabling_bay, /* enable bits set, waiting MB_RESET_DELAY */
+ mb_resetting, /* reset bit unset, waiting MB_SETUP_DELAY */
+ mb_ide_resetting, /* IDE reset bit unser, waiting MB_IDE_WAIT */
+ mb_ide_waiting, /* Waiting for BUSY bit to go away until MB_IDE_TIMEOUT */
+ mb_up, /* Media bay full */
+ mb_powering_down /* Powering down (avoid too fast down/up) */
+};
+
+#define MB_POWER_SOUND 0x08
+#define MB_POWER_FLOPPY 0x04
+#define MB_POWER_ATA 0x02
+#define MB_POWER_PCI 0x01
+#define MB_POWER_OFF 0x00
+
+/*
+ * Functions for polling content of media bay
+ */
+
+static u8 __pmac
+ohare_mb_content(struct media_bay_info *bay)
+{
+ return (MB_IN32(bay, OHARE_MBCR) >> 12) & 7;
+}
+
+static u8 __pmac
+heathrow_mb_content(struct media_bay_info *bay)
+{
+ return (MB_IN32(bay, HEATHROW_MBCR) >> 12) & 7;
+}
+
+static u8 __pmac
+keylargo_mb_content(struct media_bay_info *bay)
+{
+ int new_gpio;
+
+ new_gpio = MB_IN8(bay, KL_GPIO_MEDIABAY_IRQ) & KEYLARGO_GPIO_INPUT_DATA;
+ if (new_gpio) {
+ bay->cached_gpio = new_gpio;
+ return MB_NO;
+ } else if (bay->cached_gpio != new_gpio) {
+ MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_ENABLE);
+ (void)MB_IN32(bay, KEYLARGO_MBCR);
+ udelay(5);
+ MB_BIC(bay, KEYLARGO_MBCR, 0x0000000F);
+ (void)MB_IN32(bay, KEYLARGO_MBCR);
+ udelay(5);
+ bay->cached_gpio = new_gpio;
+ }
+ return (MB_IN32(bay, KEYLARGO_MBCR) >> 4) & 7;
+}
+
+/*
+ * Functions for powering up/down the bay, puts the bay device
+ * into reset state as well
+ */
+
+static void __pmac
+ohare_mb_power(struct media_bay_info* bay, int on_off)
+{
+ if (on_off) {
+ /* Power up device, assert it's reset line */
+ MB_BIC(bay, OHARE_FCR, OH_BAY_RESET_N);
+ MB_BIC(bay, OHARE_FCR, OH_BAY_POWER_N);
+ } else {
+ /* Disable all devices */
+ MB_BIC(bay, OHARE_FCR, OH_BAY_DEV_MASK);
+ MB_BIC(bay, OHARE_FCR, OH_FLOPPY_ENABLE);
+ /* Cut power from bay, release reset line */
+ MB_BIS(bay, OHARE_FCR, OH_BAY_POWER_N);
+ MB_BIS(bay, OHARE_FCR, OH_BAY_RESET_N);
+ MB_BIS(bay, OHARE_FCR, OH_IDE1_RESET_N);
+ }
+ MB_BIC(bay, OHARE_MBCR, 0x00000F00);
+}
+
+static void __pmac
+heathrow_mb_power(struct media_bay_info* bay, int on_off)
+{
+ if (on_off) {
+ /* Power up device, assert it's reset line */
+ MB_BIC(bay, HEATHROW_FCR, HRW_BAY_RESET_N);
+ MB_BIC(bay, HEATHROW_FCR, HRW_BAY_POWER_N);
+ } else {
+ /* Disable all devices */
+ MB_BIC(bay, HEATHROW_FCR, HRW_BAY_DEV_MASK);
+ MB_BIC(bay, HEATHROW_FCR, HRW_SWIM_ENABLE);
+ /* Cut power from bay, release reset line */
+ MB_BIS(bay, HEATHROW_FCR, HRW_BAY_POWER_N);
+ MB_BIS(bay, HEATHROW_FCR, HRW_BAY_RESET_N);
+ MB_BIS(bay, HEATHROW_FCR, HRW_IDE1_RESET_N);
+ }
+ MB_BIC(bay, HEATHROW_MBCR, 0x00000F00);
+}
+
+static void __pmac
+keylargo_mb_power(struct media_bay_info* bay, int on_off)
+{
+ if (on_off) {
+ /* Power up device, assert it's reset line */
+ MB_BIC(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_RESET);
+ MB_BIC(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_POWER);
+ } else {
+ /* Disable all devices */
+ MB_BIC(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_MASK);
+ MB_BIC(bay, KEYLARGO_FCR1, KL1_EIDE0_ENABLE);
+ /* Cut power from bay, release reset line */
+ MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_POWER);
+ MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_RESET);
+ MB_BIS(bay, KEYLARGO_FCR1, KL1_EIDE0_RESET_N);
+ }
+ MB_BIC(bay, KEYLARGO_MBCR, 0x0000000F);
+}
+
+/*
+ * Functions for configuring the media bay for a given type of device,
+ * enable the related busses
+ */
+
+static int __pmac
+ohare_mb_setup_bus(struct media_bay_info* bay, u8 device_id)
+{
+ switch(device_id) {
+ case MB_FD:
+ case MB_FD1:
+ MB_BIS(bay, OHARE_FCR, OH_BAY_FLOPPY_ENABLE);
+ MB_BIS(bay, OHARE_FCR, OH_FLOPPY_ENABLE);
+ return 0;
+ case MB_CD:
+ MB_BIC(bay, OHARE_FCR, OH_IDE1_RESET_N);
+ MB_BIS(bay, OHARE_FCR, OH_BAY_IDE_ENABLE);
+ return 0;
+ case MB_PCI:
+ MB_BIS(bay, OHARE_FCR, OH_BAY_PCI_ENABLE);
+ return 0;
+ }
+ return -ENODEV;
+}
+
+static int __pmac
+heathrow_mb_setup_bus(struct media_bay_info* bay, u8 device_id)
+{
+ switch(device_id) {
+ case MB_FD:
+ case MB_FD1:
+ MB_BIS(bay, HEATHROW_FCR, HRW_BAY_FLOPPY_ENABLE);
+ MB_BIS(bay, HEATHROW_FCR, HRW_SWIM_ENABLE);
+ return 0;
+ case MB_CD:
+ MB_BIC(bay, HEATHROW_FCR, HRW_IDE1_RESET_N);
+ MB_BIS(bay, HEATHROW_FCR, HRW_BAY_IDE_ENABLE);
+ return 0;
+ case MB_PCI:
+ MB_BIS(bay, HEATHROW_FCR, HRW_BAY_PCI_ENABLE);
+ return 0;
+ }
+ return -ENODEV;
+}
+
+static int __pmac
+keylargo_mb_setup_bus(struct media_bay_info* bay, u8 device_id)
+{
+ switch(device_id) {
+ case MB_CD:
+ MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_IDE_ENABLE);
+ MB_BIC(bay, KEYLARGO_FCR1, KL1_EIDE0_RESET_N);
+ MB_BIS(bay, KEYLARGO_FCR1, KL1_EIDE0_ENABLE);
+ return 0;
+ case MB_PCI:
+ MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_PCI_ENABLE);
+ return 0;
+ case MB_SOUND:
+ MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_SOUND_ENABLE);
+ return 0;
+ }
+ return -ENODEV;
+}
+
+/*
+ * Functions for tweaking resets
+ */
+
+static void __pmac
+ohare_mb_un_reset(struct media_bay_info* bay)
+{
+ MB_BIS(bay, OHARE_FCR, OH_BAY_RESET_N);
+}
+
+static void __pmac keylargo_mb_init(struct media_bay_info *bay)
+{
+ MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_ENABLE);
+}
+
+static void __pmac heathrow_mb_un_reset(struct media_bay_info* bay)
+{
+ MB_BIS(bay, HEATHROW_FCR, HRW_BAY_RESET_N);
+}
+
+static void __pmac keylargo_mb_un_reset(struct media_bay_info* bay)
+{
+ MB_BIS(bay, KEYLARGO_MBCR, KL_MBCR_MB0_DEV_RESET);
+}
+
+static void __pmac ohare_mb_un_reset_ide(struct media_bay_info* bay)
+{
+ MB_BIS(bay, OHARE_FCR, OH_IDE1_RESET_N);
+}
+
+static void __pmac heathrow_mb_un_reset_ide(struct media_bay_info* bay)
+{
+ MB_BIS(bay, HEATHROW_FCR, HRW_IDE1_RESET_N);
+}
+
+static void __pmac keylargo_mb_un_reset_ide(struct media_bay_info* bay)
+{
+ MB_BIS(bay, KEYLARGO_FCR1, KL1_EIDE0_RESET_N);
+}
+
+static inline void __pmac set_mb_power(struct media_bay_info* bay, int onoff)
+{
+ /* Power up up and assert the bay reset line */
+ if (onoff) {
+ bay->ops->power(bay, 1);
+ bay->state = mb_powering_up;
+ MBDBG("mediabay%d: powering up\n", bay->index);
+ } else {
+ /* Make sure everything is powered down & disabled */
+ bay->ops->power(bay, 0);
+ bay->state = mb_powering_down;
+ MBDBG("mediabay%d: powering down\n", bay->index);
+ }
+ bay->timer = msecs_to_jiffies(MB_POWER_DELAY);
+}
+
+static void __pmac poll_media_bay(struct media_bay_info* bay)
+{
+ int id = bay->ops->content(bay);
+
+ if (id == bay->last_value) {
+ if (id != bay->content_id) {
+ bay->value_count += msecs_to_jiffies(MB_POLL_DELAY);
+ if (bay->value_count >= msecs_to_jiffies(MB_STABLE_DELAY)) {
+ /* If the device type changes without going thru
+ * "MB_NO", we force a pass by "MB_NO" to make sure
+ * things are properly reset
+ */
+ if ((id != MB_NO) && (bay->content_id != MB_NO)) {
+ id = MB_NO;
+ MBDBG("mediabay%d: forcing MB_NO\n", bay->index);
+ }
+ MBDBG("mediabay%d: switching to %d\n", bay->index, id);
+ set_mb_power(bay, id != MB_NO);
+ bay->content_id = id;
+ if (id == MB_NO) {
+#ifdef CONFIG_BLK_DEV_IDE
+ bay->cd_retry = 0;
+#endif
+ printk(KERN_INFO "media bay %d is empty\n", bay->index);
+ }
+ }
+ }
+ } else {
+ bay->last_value = id;
+ bay->value_count = 0;
+ }
+}
+
+int __pmac check_media_bay(struct device_node *which_bay, int what)
+{
+#ifdef CONFIG_BLK_DEV_IDE
+ int i;
+
+ for (i=0; i<media_bay_count; i++)
+ if (media_bays[i].mdev && which_bay == media_bays[i].mdev->ofdev.node) {
+ if ((what == media_bays[i].content_id) && media_bays[i].state == mb_up)
+ return 0;
+ media_bays[i].cd_index = -1;
+ return -EINVAL;
+ }
+#endif /* CONFIG_BLK_DEV_IDE */
+ return -ENODEV;
+}
+EXPORT_SYMBOL(check_media_bay);
+
+int __pmac check_media_bay_by_base(unsigned long base, int what)
+{
+#ifdef CONFIG_BLK_DEV_IDE
+ int i;
+
+ for (i=0; i<media_bay_count; i++)
+ if (media_bays[i].mdev && base == (unsigned long) media_bays[i].cd_base) {
+ if ((what == media_bays[i].content_id) && media_bays[i].state == mb_up)
+ return 0;
+ media_bays[i].cd_index = -1;
+ return -EINVAL;
+ }
+#endif
+
+ return -ENODEV;
+}
+
+int __pmac media_bay_set_ide_infos(struct device_node* which_bay, unsigned long base,
+ int irq, int index)
+{
+#ifdef CONFIG_BLK_DEV_IDE
+ int i;
+
+ for (i=0; i<media_bay_count; i++) {
+ struct media_bay_info* bay = &media_bays[i];
+
+ if (bay->mdev && which_bay == bay->mdev->ofdev.node) {
+ int timeout = 5000;
+
+ down(&bay->lock);
+
+ bay->cd_base = (void __iomem *) base;
+ bay->cd_irq = irq;
+
+ if ((MB_CD != bay->content_id) || bay->state != mb_up) {
+ up(&bay->lock);
+ return 0;
+ }
+ printk(KERN_DEBUG "Registered ide%d for media bay %d\n", index, i);
+ do {
+ if (MB_IDE_READY(i)) {
+ bay->cd_index = index;
+ up(&bay->lock);
+ return 0;
+ }
+ mdelay(1);
+ } while(--timeout);
+ printk(KERN_DEBUG "Timeount waiting IDE in bay %d\n", i);
+ up(&bay->lock);
+ return -ENODEV;
+ }
+ }
+#endif /* CONFIG_BLK_DEV_IDE */
+
+ return -ENODEV;
+}
+
+static void __pmac media_bay_step(int i)
+{
+ struct media_bay_info* bay = &media_bays[i];
+
+ /* We don't poll when powering down */
+ if (bay->state != mb_powering_down)
+ poll_media_bay(bay);
+
+ /* If timer expired or polling IDE busy, run state machine */
+ if ((bay->state != mb_ide_waiting) && (bay->timer != 0)) {
+ bay->timer -= msecs_to_jiffies(MB_POLL_DELAY);
+ if (bay->timer > 0)
+ return;
+ bay->timer = 0;
+ }
+
+ switch(bay->state) {
+ case mb_powering_up:
+ if (bay->ops->setup_bus(bay, bay->last_value) < 0) {
+ MBDBG("mediabay%d: device not supported (kind:%d)\n", i, bay->content_id);
+ set_mb_power(bay, 0);
+ break;
+ }
+ bay->timer = msecs_to_jiffies(MB_RESET_DELAY);
+ bay->state = mb_enabling_bay;
+ MBDBG("mediabay%d: enabling (kind:%d)\n", i, bay->content_id);
+ break;
+ case mb_enabling_bay:
+ bay->ops->un_reset(bay);
+ bay->timer = msecs_to_jiffies(MB_SETUP_DELAY);
+ bay->state = mb_resetting;
+ MBDBG("mediabay%d: waiting reset (kind:%d)\n", i, bay->content_id);
+ break;
+
+ case mb_resetting:
+ if (bay->content_id != MB_CD) {
+ MBDBG("mediabay%d: bay is up (kind:%d)\n", i, bay->content_id);
+ bay->state = mb_up;
+ break;
+ }
+#ifdef CONFIG_BLK_DEV_IDE
+ MBDBG("mediabay%d: waiting IDE reset (kind:%d)\n", i, bay->content_id);
+ bay->ops->un_reset_ide(bay);
+ bay->timer = msecs_to_jiffies(MB_IDE_WAIT);
+ bay->state = mb_ide_resetting;
+#else
+ printk(KERN_DEBUG "media-bay %d is ide (not compiled in kernel)\n", i);
+ set_mb_power(bay, 0);
+#endif /* CONFIG_BLK_DEV_IDE */
+ break;
+
+#ifdef CONFIG_BLK_DEV_IDE
+ case mb_ide_resetting:
+ bay->timer = msecs_to_jiffies(MB_IDE_TIMEOUT);
+ bay->state = mb_ide_waiting;
+ MBDBG("mediabay%d: waiting IDE ready (kind:%d)\n", i, bay->content_id);
+ break;
+
+ case mb_ide_waiting:
+ if (bay->cd_base == NULL) {
+ bay->timer = 0;
+ bay->state = mb_up;
+ MBDBG("mediabay%d: up before IDE init\n", i);
+ break;
+ } else if (MB_IDE_READY(i)) {
+ bay->timer = 0;
+ bay->state = mb_up;
+ if (bay->cd_index < 0) {
+ hw_regs_t hw;
+
+ printk("mediabay %d, registering IDE...\n", i);
+ pmu_suspend();
+ ide_init_hwif_ports(&hw, (unsigned long) bay->cd_base, (unsigned long) 0, NULL);
+ hw.irq = bay->cd_irq;
+ hw.chipset = ide_pmac;
+ bay->cd_index = ide_register_hw(&hw, NULL);
+ pmu_resume();
+ }
+ if (bay->cd_index == -1) {
+ /* We eventually do a retry */
+ bay->cd_retry++;
+ printk("IDE register error\n");
+ set_mb_power(bay, 0);
+ } else {
+ printk(KERN_DEBUG "media-bay %d is ide%d\n", i, bay->cd_index);
+ MBDBG("mediabay %d IDE ready\n", i);
+ }
+ break;
+ } else if (bay->timer > 0)
+ bay->timer -= msecs_to_jiffies(MB_POLL_DELAY);
+ if (bay->timer <= 0) {
+ printk("\nIDE Timeout in bay %d !, IDE state is: 0x%02x\n",
+ i, readb(bay->cd_base + 0x70));
+ MBDBG("mediabay%d: nIDE Timeout !\n", i);
+ set_mb_power(bay, 0);
+ bay->timer = 0;
+ }
+ break;
+#endif /* CONFIG_BLK_DEV_IDE */
+
+ case mb_powering_down:
+ bay->state = mb_empty;
+#ifdef CONFIG_BLK_DEV_IDE
+ if (bay->cd_index >= 0) {
+ printk(KERN_DEBUG "Unregistering mb %d ide, index:%d\n", i,
+ bay->cd_index);
+ ide_unregister(bay->cd_index);
+ bay->cd_index = -1;
+ }
+ if (bay->cd_retry) {
+ if (bay->cd_retry > MAX_CD_RETRIES) {
+ /* Should add an error sound (sort of beep in dmasound) */
+ printk("\nmedia-bay %d, IDE device badly inserted or unrecognised\n", i);
+ } else {
+ /* Force a new power down/up sequence */
+ bay->content_id = MB_NO;
+ }
+ }
+#endif /* CONFIG_BLK_DEV_IDE */
+ MBDBG("mediabay%d: end of power down\n", i);
+ break;
+ }
+}
+
+/*
+ * This procedure runs as a kernel thread to poll the media bay
+ * once each tick and register and unregister the IDE interface
+ * with the IDE driver. It needs to be a thread because
+ * ide_register can't be called from interrupt context.
+ */
+static int __pmac media_bay_task(void *x)
+{
+ int i;
+
+ strcpy(current->comm, "media-bay");
+#ifdef MB_IGNORE_SIGNALS
+ sigfillset(&current->blocked);
+#endif
+
+ for (;;) {
+ for (i = 0; i < media_bay_count; ++i) {
+ down(&media_bays[i].lock);
+ if (!media_bays[i].sleeping)
+ media_bay_step(i);
+ up(&media_bays[i].lock);
+ }
+
+ msleep_interruptible(MB_POLL_DELAY);
+ if (signal_pending(current))
+ return 0;
+ }
+}
+
+static int __devinit media_bay_attach(struct macio_dev *mdev, const struct of_match *match)
+{
+ struct media_bay_info* bay;
+ u32 __iomem *regbase;
+ struct device_node *ofnode;
+ int i;
+
+ ofnode = mdev->ofdev.node;
+
+ if (macio_resource_count(mdev) < 1)
+ return -ENODEV;
+ if (macio_request_resources(mdev, "media-bay"))
+ return -EBUSY;
+ /* Media bay registers are located at the beginning of the
+ * mac-io chip, we get the parent address for now (hrm...)
+ */
+ regbase = (u32 __iomem *)
+ ioremap(ofnode->parent->addrs[0].address, 0x100);
+ if (regbase == NULL) {
+ macio_release_resources(mdev);
+ return -ENOMEM;
+ }
+
+ i = media_bay_count++;
+ bay = &media_bays[i];
+ bay->mdev = mdev;
+ bay->base = regbase;
+ bay->index = i;
+ bay->ops = match->data;
+ bay->sleeping = 0;
+ init_MUTEX(&bay->lock);
+
+ /* Init HW probing */
+ if (bay->ops->init)
+ bay->ops->init(bay);
+
+ printk(KERN_INFO "mediabay%d: Registered %s media-bay\n", i, bay->ops->name);
+
+ /* Force an immediate detect */
+ set_mb_power(bay, 0);
+ msleep(MB_POWER_DELAY);
+ bay->content_id = MB_NO;
+ bay->last_value = bay->ops->content(bay);
+ bay->value_count = msecs_to_jiffies(MB_STABLE_DELAY);
+ bay->state = mb_empty;
+ do {
+ msleep(MB_POLL_DELAY);
+ media_bay_step(i);
+ } while((bay->state != mb_empty) &&
+ (bay->state != mb_up));
+
+ /* Mark us ready by filling our mdev data */
+ macio_set_drvdata(mdev, bay);
+
+ /* Startup kernel thread */
+ if (i == 0)
+ kernel_thread(media_bay_task, NULL, CLONE_KERNEL);
+
+ return 0;
+
+}
+
+static int __pmac media_bay_suspend(struct macio_dev *mdev, u32 state)
+{
+ struct media_bay_info *bay = macio_get_drvdata(mdev);
+
+ if (state != mdev->ofdev.dev.power.power_state && state == PM_SUSPEND_MEM) {
+ down(&bay->lock);
+ bay->sleeping = 1;
+ set_mb_power(bay, 0);
+ up(&bay->lock);
+ msleep(MB_POLL_DELAY);
+ mdev->ofdev.dev.power.power_state = state;
+ }
+ return 0;
+}
+
+static int __pmac media_bay_resume(struct macio_dev *mdev)
+{
+ struct media_bay_info *bay = macio_get_drvdata(mdev);
+
+ if (mdev->ofdev.dev.power.power_state != 0) {
+ mdev->ofdev.dev.power.power_state = 0;
+
+ /* We re-enable the bay using it's previous content
+ only if it did not change. Note those bozo timings,
+ they seem to help the 3400 get it right.
+ */
+ /* Force MB power to 0 */
+ down(&bay->lock);
+ set_mb_power(bay, 0);
+ msleep(MB_POWER_DELAY);
+ if (bay->ops->content(bay) != bay->content_id) {
+ printk("mediabay%d: content changed during sleep...\n", bay->index);
+ up(&bay->lock);
+ return 0;
+ }
+ set_mb_power(bay, 1);
+ bay->last_value = bay->content_id;
+ bay->value_count = msecs_to_jiffies(MB_STABLE_DELAY);
+ bay->timer = msecs_to_jiffies(MB_POWER_DELAY);
+#ifdef CONFIG_BLK_DEV_IDE
+ bay->cd_retry = 0;
+#endif
+ do {
+ msleep(MB_POLL_DELAY);
+ media_bay_step(bay->index);
+ } while((bay->state != mb_empty) &&
+ (bay->state != mb_up));
+ bay->sleeping = 0;
+ up(&bay->lock);
+ }
+ return 0;
+}
+
+
+/* Definitions of "ops" structures.
+ */
+static struct mb_ops ohare_mb_ops __pmacdata = {
+ .name = "Ohare",
+ .content = ohare_mb_content,
+ .power = ohare_mb_power,
+ .setup_bus = ohare_mb_setup_bus,
+ .un_reset = ohare_mb_un_reset,
+ .un_reset_ide = ohare_mb_un_reset_ide,
+};
+
+static struct mb_ops heathrow_mb_ops __pmacdata = {
+ .name = "Heathrow",
+ .content = heathrow_mb_content,
+ .power = heathrow_mb_power,
+ .setup_bus = heathrow_mb_setup_bus,
+ .un_reset = heathrow_mb_un_reset,
+ .un_reset_ide = heathrow_mb_un_reset_ide,
+};
+
+static struct mb_ops keylargo_mb_ops __pmacdata = {
+ .name = "KeyLargo",
+ .init = keylargo_mb_init,
+ .content = keylargo_mb_content,
+ .power = keylargo_mb_power,
+ .setup_bus = keylargo_mb_setup_bus,
+ .un_reset = keylargo_mb_un_reset,
+ .un_reset_ide = keylargo_mb_un_reset_ide,
+};
+
+/*
+ * It seems that the bit for the media-bay interrupt in the IRQ_LEVEL
+ * register is always set when there is something in the media bay.
+ * This causes problems for the interrupt code if we attach an interrupt
+ * handler to the media-bay interrupt, because it tends to go into
+ * an infinite loop calling the media bay interrupt handler.
+ * Therefore we do it all by polling the media bay once each tick.
+ */
+
+static struct of_match media_bay_match[] =
+{
+ {
+ .name = "media-bay",
+ .type = OF_ANY_MATCH,
+ .compatible = "keylargo-media-bay",
+ .data = &keylargo_mb_ops,
+ },
+ {
+ .name = "media-bay",
+ .type = OF_ANY_MATCH,
+ .compatible = "heathrow-media-bay",
+ .data = &heathrow_mb_ops,
+ },
+ {
+ .name = "media-bay",
+ .type = OF_ANY_MATCH,
+ .compatible = "ohare-media-bay",
+ .data = &ohare_mb_ops,
+ },
+ {},
+};
+
+static struct macio_driver media_bay_driver =
+{
+ .name = "media-bay",
+ .match_table = media_bay_match,
+ .probe = media_bay_attach,
+ .suspend = media_bay_suspend,
+ .resume = media_bay_resume
+};
+
+static int __init media_bay_init(void)
+{
+ int i;
+
+ for (i=0; i<MAX_BAYS; i++) {
+ memset((char *)&media_bays[i], 0, sizeof(struct media_bay_info));
+ media_bays[i].content_id = -1;
+#ifdef CONFIG_BLK_DEV_IDE
+ media_bays[i].cd_index = -1;
+#endif
+ }
+ if (_machine != _MACH_Pmac)
+ return -ENODEV;
+
+ macio_register_driver(&media_bay_driver);
+
+ return 0;
+}
+
+device_initcall(media_bay_init);
diff --git a/drivers/macintosh/nvram.c b/drivers/macintosh/nvram.c
new file mode 100644
index 000000000000..30791875fc97
--- /dev/null
+++ b/drivers/macintosh/nvram.c
@@ -0,0 +1,131 @@
+/*
+ * /dev/nvram driver for Power Macintosh.
+ */
+
+#define NVRAM_VERSION "1.0"
+
+#include <linux/module.h>
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/miscdevice.h>
+#include <linux/fcntl.h>
+#include <linux/nvram.h>
+#include <linux/init.h>
+#include <linux/smp_lock.h>
+#include <asm/uaccess.h>
+#include <asm/nvram.h>
+
+#define NVRAM_SIZE 8192
+
+static loff_t nvram_llseek(struct file *file, loff_t offset, int origin)
+{
+ lock_kernel();
+ switch (origin) {
+ case 1:
+ offset += file->f_pos;
+ break;
+ case 2:
+ offset += NVRAM_SIZE;
+ break;
+ }
+ if (offset < 0) {
+ unlock_kernel();
+ return -EINVAL;
+ }
+ file->f_pos = offset;
+ unlock_kernel();
+ return file->f_pos;
+}
+
+static ssize_t read_nvram(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ unsigned int i;
+ char __user *p = buf;
+
+ if (!access_ok(VERIFY_WRITE, buf, count))
+ return -EFAULT;
+ if (*ppos >= NVRAM_SIZE)
+ return 0;
+ for (i = *ppos; count > 0 && i < NVRAM_SIZE; ++i, ++p, --count)
+ if (__put_user(nvram_read_byte(i), p))
+ return -EFAULT;
+ *ppos = i;
+ return p - buf;
+}
+
+static ssize_t write_nvram(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ unsigned int i;
+ const char __user *p = buf;
+ char c;
+
+ if (!access_ok(VERIFY_READ, buf, count))
+ return -EFAULT;
+ if (*ppos >= NVRAM_SIZE)
+ return 0;
+ for (i = *ppos; count > 0 && i < NVRAM_SIZE; ++i, ++p, --count) {
+ if (__get_user(c, p))
+ return -EFAULT;
+ nvram_write_byte(c, i);
+ }
+ *ppos = i;
+ return p - buf;
+}
+
+static int nvram_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ switch(cmd) {
+ case PMAC_NVRAM_GET_OFFSET:
+ {
+ int part, offset;
+ if (copy_from_user(&part, (void __user*)arg, sizeof(part)) != 0)
+ return -EFAULT;
+ if (part < pmac_nvram_OF || part > pmac_nvram_NR)
+ return -EINVAL;
+ offset = pmac_get_partition(part);
+ if (copy_to_user((void __user*)arg, &offset, sizeof(offset)) != 0)
+ return -EFAULT;
+ break;
+ }
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+struct file_operations nvram_fops = {
+ .owner = THIS_MODULE,
+ .llseek = nvram_llseek,
+ .read = read_nvram,
+ .write = write_nvram,
+ .ioctl = nvram_ioctl,
+};
+
+static struct miscdevice nvram_dev = {
+ NVRAM_MINOR,
+ "nvram",
+ &nvram_fops
+};
+
+int __init nvram_init(void)
+{
+ printk(KERN_INFO "Macintosh non-volatile memory driver v%s\n",
+ NVRAM_VERSION);
+ return misc_register(&nvram_dev);
+}
+
+void __exit nvram_cleanup(void)
+{
+ misc_deregister( &nvram_dev );
+}
+
+module_init(nvram_init);
+module_exit(nvram_cleanup);
+MODULE_LICENSE("GPL");
diff --git a/drivers/macintosh/smu.c b/drivers/macintosh/smu.c
new file mode 100644
index 000000000000..fb535737d17d
--- /dev/null
+++ b/drivers/macintosh/smu.c
@@ -0,0 +1,364 @@
+/*
+ * PowerMac G5 SMU driver
+ *
+ * Copyright 2004 J. Mayer <l_indien@magic.fr>
+ * Copyright 2005 Benjamin Herrenschmidt, IBM Corp.
+ *
+ * Released under the term of the GNU GPL v2.
+ */
+
+/*
+ * For now, this driver includes:
+ * - RTC get & set
+ * - reboot & shutdown commands
+ * all synchronous with IRQ disabled (ugh)
+ *
+ * TODO:
+ * rework in a way the PMU driver works, that is asynchronous
+ * with a queue of commands. I'll do that as soon as I have an
+ * SMU based machine at hand. Some more cleanup is needed too,
+ * like maybe fitting it into a platform device, etc...
+ * Also check what's up with cache coherency, and if we really
+ * can't do better than flushing the cache, maybe build a table
+ * of command len/reply len like the PMU driver to only flush
+ * what is actually necessary.
+ * --BenH.
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/dmapool.h>
+#include <linux/bootmem.h>
+#include <linux/vmalloc.h>
+#include <linux/highmem.h>
+#include <linux/jiffies.h>
+#include <linux/interrupt.h>
+#include <linux/rtc.h>
+
+#include <asm/byteorder.h>
+#include <asm/io.h>
+#include <asm/prom.h>
+#include <asm/machdep.h>
+#include <asm/pmac_feature.h>
+#include <asm/smu.h>
+#include <asm/sections.h>
+#include <asm/abs_addr.h>
+
+#define DEBUG_SMU 1
+
+#ifdef DEBUG_SMU
+#define DPRINTK(fmt, args...) do { printk(KERN_DEBUG fmt , ##args); } while (0)
+#else
+#define DPRINTK(fmt, args...) do { } while (0)
+#endif
+
+/*
+ * This is the command buffer passed to the SMU hardware
+ */
+struct smu_cmd_buf {
+ u8 cmd;
+ u8 length;
+ u8 data[0x0FFE];
+};
+
+struct smu_device {
+ spinlock_t lock;
+ struct device_node *of_node;
+ int db_ack; /* doorbell ack GPIO */
+ int db_req; /* doorbell req GPIO */
+ u32 __iomem *db_buf; /* doorbell buffer */
+ struct smu_cmd_buf *cmd_buf; /* command buffer virtual */
+ u32 cmd_buf_abs; /* command buffer absolute */
+};
+
+/*
+ * I don't think there will ever be more than one SMU, so
+ * for now, just hard code that
+ */
+static struct smu_device *smu;
+
+/*
+ * SMU low level communication stuff
+ */
+static inline int smu_cmd_stat(struct smu_cmd_buf *cmd_buf, u8 cmd_ack)
+{
+ rmb();
+ return cmd_buf->cmd == cmd_ack && cmd_buf->length != 0;
+}
+
+static inline u8 smu_save_ack_cmd(struct smu_cmd_buf *cmd_buf)
+{
+ return (~cmd_buf->cmd) & 0xff;
+}
+
+static void smu_send_cmd(struct smu_device *dev)
+{
+ /* SMU command buf is currently cacheable, we need a physical
+ * address. This isn't exactly a DMA mapping here, I suspect
+ * the SMU is actually communicating with us via i2c to the
+ * northbridge or the CPU to access RAM.
+ */
+ writel(dev->cmd_buf_abs, dev->db_buf);
+
+ /* Ring the SMU doorbell */
+ pmac_do_feature_call(PMAC_FTR_WRITE_GPIO, NULL, dev->db_req, 4);
+ pmac_do_feature_call(PMAC_FTR_READ_GPIO, NULL, dev->db_req, 4);
+}
+
+static int smu_cmd_done(struct smu_device *dev)
+{
+ unsigned long wait = 0;
+ int gpio;
+
+ /* Check the SMU doorbell */
+ do {
+ gpio = pmac_do_feature_call(PMAC_FTR_READ_GPIO,
+ NULL, dev->db_ack);
+ if ((gpio & 7) == 7)
+ return 0;
+ udelay(100);
+ } while(++wait < 10000);
+
+ printk(KERN_ERR "SMU timeout !\n");
+ return -ENXIO;
+}
+
+static int smu_do_cmd(struct smu_device *dev)
+{
+ int rc;
+ u8 cmd_ack;
+
+ DPRINTK("SMU do_cmd %02x len=%d %02x\n",
+ dev->cmd_buf->cmd, dev->cmd_buf->length,
+ dev->cmd_buf->data[0]);
+
+ cmd_ack = smu_save_ack_cmd(dev->cmd_buf);
+
+ /* Clear cmd_buf cache lines */
+ flush_inval_dcache_range((unsigned long)dev->cmd_buf,
+ ((unsigned long)dev->cmd_buf) +
+ sizeof(struct smu_cmd_buf));
+ smu_send_cmd(dev);
+ rc = smu_cmd_done(dev);
+ if (rc == 0)
+ rc = smu_cmd_stat(dev->cmd_buf, cmd_ack) ? 0 : -1;
+
+ DPRINTK("SMU do_cmd %02x len=%d %02x => %d (%02x)\n",
+ dev->cmd_buf->cmd, dev->cmd_buf->length,
+ dev->cmd_buf->data[0], rc, cmd_ack);
+
+ return rc;
+}
+
+/* RTC low level commands */
+static inline int bcd2hex (int n)
+{
+ return (((n & 0xf0) >> 4) * 10) + (n & 0xf);
+}
+
+static inline int hex2bcd (int n)
+{
+ return ((n / 10) << 4) + (n % 10);
+}
+
+#if 0
+static inline void smu_fill_set_pwrup_timer_cmd(struct smu_cmd_buf *cmd_buf)
+{
+ cmd_buf->cmd = 0x8e;
+ cmd_buf->length = 8;
+ cmd_buf->data[0] = 0x00;
+ memset(cmd_buf->data + 1, 0, 7);
+}
+
+static inline void smu_fill_get_pwrup_timer_cmd(struct smu_cmd_buf *cmd_buf)
+{
+ cmd_buf->cmd = 0x8e;
+ cmd_buf->length = 1;
+ cmd_buf->data[0] = 0x01;
+}
+
+static inline void smu_fill_dis_pwrup_timer_cmd(struct smu_cmd_buf *cmd_buf)
+{
+ cmd_buf->cmd = 0x8e;
+ cmd_buf->length = 1;
+ cmd_buf->data[0] = 0x02;
+}
+#endif
+
+static inline void smu_fill_set_rtc_cmd(struct smu_cmd_buf *cmd_buf,
+ struct rtc_time *time)
+{
+ cmd_buf->cmd = 0x8e;
+ cmd_buf->length = 8;
+ cmd_buf->data[0] = 0x80;
+ cmd_buf->data[1] = hex2bcd(time->tm_sec);
+ cmd_buf->data[2] = hex2bcd(time->tm_min);
+ cmd_buf->data[3] = hex2bcd(time->tm_hour);
+ cmd_buf->data[4] = time->tm_wday;
+ cmd_buf->data[5] = hex2bcd(time->tm_mday);
+ cmd_buf->data[6] = hex2bcd(time->tm_mon) + 1;
+ cmd_buf->data[7] = hex2bcd(time->tm_year - 100);
+}
+
+static inline void smu_fill_get_rtc_cmd(struct smu_cmd_buf *cmd_buf)
+{
+ cmd_buf->cmd = 0x8e;
+ cmd_buf->length = 1;
+ cmd_buf->data[0] = 0x81;
+}
+
+static void smu_parse_get_rtc_reply(struct smu_cmd_buf *cmd_buf,
+ struct rtc_time *time)
+{
+ time->tm_sec = bcd2hex(cmd_buf->data[0]);
+ time->tm_min = bcd2hex(cmd_buf->data[1]);
+ time->tm_hour = bcd2hex(cmd_buf->data[2]);
+ time->tm_wday = bcd2hex(cmd_buf->data[3]);
+ time->tm_mday = bcd2hex(cmd_buf->data[4]);
+ time->tm_mon = bcd2hex(cmd_buf->data[5]) - 1;
+ time->tm_year = bcd2hex(cmd_buf->data[6]) + 100;
+}
+
+int smu_get_rtc_time(struct rtc_time *time)
+{
+ unsigned long flags;
+ int rc;
+
+ if (smu == NULL)
+ return -ENODEV;
+
+ memset(time, 0, sizeof(struct rtc_time));
+ spin_lock_irqsave(&smu->lock, flags);
+ smu_fill_get_rtc_cmd(smu->cmd_buf);
+ rc = smu_do_cmd(smu);
+ if (rc == 0)
+ smu_parse_get_rtc_reply(smu->cmd_buf, time);
+ spin_unlock_irqrestore(&smu->lock, flags);
+
+ return rc;
+}
+
+int smu_set_rtc_time(struct rtc_time *time)
+{
+ unsigned long flags;
+ int rc;
+
+ if (smu == NULL)
+ return -ENODEV;
+
+ spin_lock_irqsave(&smu->lock, flags);
+ smu_fill_set_rtc_cmd(smu->cmd_buf, time);
+ rc = smu_do_cmd(smu);
+ spin_unlock_irqrestore(&smu->lock, flags);
+
+ return rc;
+}
+
+void smu_shutdown(void)
+{
+ const unsigned char *command = "SHUTDOWN";
+ unsigned long flags;
+
+ if (smu == NULL)
+ return;
+
+ spin_lock_irqsave(&smu->lock, flags);
+ smu->cmd_buf->cmd = 0xaa;
+ smu->cmd_buf->length = strlen(command);
+ strcpy(smu->cmd_buf->data, command);
+ smu_do_cmd(smu);
+ for (;;)
+ ;
+ spin_unlock_irqrestore(&smu->lock, flags);
+}
+
+void smu_restart(void)
+{
+ const unsigned char *command = "RESTART";
+ unsigned long flags;
+
+ if (smu == NULL)
+ return;
+
+ spin_lock_irqsave(&smu->lock, flags);
+ smu->cmd_buf->cmd = 0xaa;
+ smu->cmd_buf->length = strlen(command);
+ strcpy(smu->cmd_buf->data, command);
+ smu_do_cmd(smu);
+ for (;;)
+ ;
+ spin_unlock_irqrestore(&smu->lock, flags);
+}
+
+int smu_present(void)
+{
+ return smu != NULL;
+}
+
+
+int smu_init (void)
+{
+ struct device_node *np;
+ u32 *data;
+
+ np = of_find_node_by_type(NULL, "smu");
+ if (np == NULL)
+ return -ENODEV;
+
+ if (smu_cmdbuf_abs == 0) {
+ printk(KERN_ERR "SMU: Command buffer not allocated !\n");
+ return -EINVAL;
+ }
+
+ smu = alloc_bootmem(sizeof(struct smu_device));
+ if (smu == NULL)
+ return -ENOMEM;
+ memset(smu, 0, sizeof(*smu));
+
+ spin_lock_init(&smu->lock);
+ smu->of_node = np;
+ /* smu_cmdbuf_abs is in the low 2G of RAM, can be converted to a
+ * 32 bits value safely
+ */
+ smu->cmd_buf_abs = (u32)smu_cmdbuf_abs;
+ smu->cmd_buf = (struct smu_cmd_buf *)abs_to_virt(smu_cmdbuf_abs);
+
+ np = of_find_node_by_name(NULL, "smu-doorbell");
+ if (np == NULL) {
+ printk(KERN_ERR "SMU: Can't find doorbell GPIO !\n");
+ goto fail;
+ }
+ data = (u32 *)get_property(np, "reg", NULL);
+ of_node_put(np);
+ if (data == NULL) {
+ printk(KERN_ERR "SMU: Can't find doorbell GPIO address !\n");
+ goto fail;
+ }
+
+ /* Current setup has one doorbell GPIO that does both doorbell
+ * and ack. GPIOs are at 0x50, best would be to find that out
+ * in the device-tree though.
+ */
+ smu->db_req = 0x50 + *data;
+ smu->db_ack = 0x50 + *data;
+
+ /* Doorbell buffer is currently hard-coded, I didn't find a proper
+ * device-tree entry giving the address. Best would probably to use
+ * an offset for K2 base though, but let's do it that way for now.
+ */
+ smu->db_buf = ioremap(0x8000860c, 0x1000);
+ if (smu->db_buf == NULL) {
+ printk(KERN_ERR "SMU: Can't map doorbell buffer pointer !\n");
+ goto fail;
+ }
+
+ sys_ctrler = SYS_CTRLER_SMU;
+ return 0;
+
+ fail:
+ smu = NULL;
+ return -ENXIO;
+
+}
diff --git a/drivers/macintosh/therm_adt746x.c b/drivers/macintosh/therm_adt746x.c
new file mode 100644
index 000000000000..e0ac63effa55
--- /dev/null
+++ b/drivers/macintosh/therm_adt746x.c
@@ -0,0 +1,612 @@
+/*
+ * Device driver for the i2c thermostat found on the iBook G4, Albook G4
+ *
+ * Copyright (C) 2003, 2004 Colin Leroy, Rasmus Rohde, Benjamin Herrenschmidt
+ *
+ * Documentation from
+ * http://www.analog.com/UploadedFiles/Data_Sheets/115254175ADT7467_pra.pdf
+ * http://www.analog.com/UploadedFiles/Data_Sheets/3686221171167ADT7460_b.pdf
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/smp_lock.h>
+#include <linux/wait.h>
+#include <linux/suspend.h>
+#include <linux/kthread.h>
+#include <linux/moduleparam.h>
+
+#include <asm/prom.h>
+#include <asm/machdep.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/sections.h>
+#include <asm/of_device.h>
+
+#undef DEBUG
+
+#define CONFIG_REG 0x40
+#define MANUAL_MASK 0xe0
+#define AUTO_MASK 0x20
+
+static u8 TEMP_REG[3] = {0x26, 0x25, 0x27}; /* local, cpu, gpu */
+static u8 LIMIT_REG[3] = {0x6b, 0x6a, 0x6c}; /* local, cpu, gpu */
+static u8 MANUAL_MODE[2] = {0x5c, 0x5d};
+static u8 REM_CONTROL[2] = {0x00, 0x40};
+static u8 FAN_SPEED[2] = {0x28, 0x2a};
+static u8 FAN_SPD_SET[2] = {0x30, 0x31};
+
+static u8 default_limits_local[3] = {70, 50, 70}; /* local, cpu, gpu */
+static u8 default_limits_chip[3] = {80, 65, 80}; /* local, cpu, gpu */
+
+static int limit_adjust = 0;
+static int fan_speed = -1;
+
+MODULE_AUTHOR("Colin Leroy <colin@colino.net>");
+MODULE_DESCRIPTION("Driver for ADT746x thermostat in iBook G4 and "
+ "Powerbook G4 Alu");
+MODULE_LICENSE("GPL");
+
+module_param(limit_adjust, int, 0644);
+MODULE_PARM_DESC(limit_adjust,"Adjust maximum temperatures (50 cpu, 70 gpu) "
+ "by N degrees.");
+
+module_param(fan_speed, int, 0644);
+MODULE_PARM_DESC(fan_speed,"Specify starting fan speed (0-255) "
+ "(default 64)");
+
+struct thermostat {
+ struct i2c_client clt;
+ u8 temps[3];
+ u8 cached_temp[3];
+ u8 initial_limits[3];
+ u8 limits[3];
+ int last_speed[2];
+ int last_var[2];
+};
+
+static enum {ADT7460, ADT7467} therm_type;
+static int therm_bus, therm_address;
+static struct of_device * of_dev;
+static struct thermostat* thermostat;
+static struct task_struct *thread_therm = NULL;
+
+static int attach_one_thermostat(struct i2c_adapter *adapter, int addr,
+ int busno);
+
+static void write_both_fan_speed(struct thermostat *th, int speed);
+static void write_fan_speed(struct thermostat *th, int speed, int fan);
+
+static int
+write_reg(struct thermostat* th, int reg, u8 data)
+{
+ u8 tmp[2];
+ int rc;
+
+ tmp[0] = reg;
+ tmp[1] = data;
+ rc = i2c_master_send(&th->clt, (const char *)tmp, 2);
+ if (rc < 0)
+ return rc;
+ if (rc != 2)
+ return -ENODEV;
+ return 0;
+}
+
+static int
+read_reg(struct thermostat* th, int reg)
+{
+ u8 reg_addr, data;
+ int rc;
+
+ reg_addr = (u8)reg;
+ rc = i2c_master_send(&th->clt, &reg_addr, 1);
+ if (rc < 0)
+ return rc;
+ if (rc != 1)
+ return -ENODEV;
+ rc = i2c_master_recv(&th->clt, (char *)&data, 1);
+ if (rc < 0)
+ return rc;
+ return data;
+}
+
+static int
+attach_thermostat(struct i2c_adapter *adapter)
+{
+ unsigned long bus_no;
+
+ if (strncmp(adapter->name, "uni-n", 5))
+ return -ENODEV;
+ bus_no = simple_strtoul(adapter->name + 6, NULL, 10);
+ if (bus_no != therm_bus)
+ return -ENODEV;
+ return attach_one_thermostat(adapter, therm_address, bus_no);
+}
+
+static int
+detach_thermostat(struct i2c_adapter *adapter)
+{
+ struct thermostat* th;
+ int i;
+
+ if (thermostat == NULL)
+ return 0;
+
+ th = thermostat;
+
+ if (thread_therm != NULL) {
+ kthread_stop(thread_therm);
+ }
+
+ printk(KERN_INFO "adt746x: Putting max temperatures back from "
+ "%d, %d, %d to %d, %d, %d\n",
+ th->limits[0], th->limits[1], th->limits[2],
+ th->initial_limits[0], th->initial_limits[1],
+ th->initial_limits[2]);
+
+ for (i = 0; i < 3; i++)
+ write_reg(th, LIMIT_REG[i], th->initial_limits[i]);
+
+ write_both_fan_speed(th, -1);
+
+ i2c_detach_client(&th->clt);
+
+ thermostat = NULL;
+
+ kfree(th);
+
+ return 0;
+}
+
+static struct i2c_driver thermostat_driver = {
+ .owner = THIS_MODULE,
+ .name = "therm_adt746x",
+ .flags = I2C_DF_NOTIFY,
+ .attach_adapter = attach_thermostat,
+ .detach_adapter = detach_thermostat,
+};
+
+static int read_fan_speed(struct thermostat *th, u8 addr)
+{
+ u8 tmp[2];
+ u16 res;
+
+ /* should start with low byte */
+ tmp[1] = read_reg(th, addr);
+ tmp[0] = read_reg(th, addr + 1);
+
+ res = tmp[1] + (tmp[0] << 8);
+ /* "a value of 0xffff means that the fan has stopped" */
+ return (res == 0xffff ? 0 : (90000*60)/res);
+}
+
+static void write_both_fan_speed(struct thermostat *th, int speed)
+{
+ write_fan_speed(th, speed, 0);
+ if (therm_type == ADT7460)
+ write_fan_speed(th, speed, 1);
+}
+
+static void write_fan_speed(struct thermostat *th, int speed, int fan)
+{
+ u8 manual;
+
+ if (speed > 0xff)
+ speed = 0xff;
+ else if (speed < -1)
+ speed = 0;
+
+ if (therm_type == ADT7467 && fan == 1)
+ return;
+
+ if (th->last_speed[fan] != speed) {
+ if (speed == -1)
+ printk(KERN_DEBUG "adt746x: Setting speed to automatic "
+ "for %s fan.\n", fan?"GPU":"CPU");
+ else
+ printk(KERN_DEBUG "adt746x: Setting speed to %d "
+ "for %s fan.\n", speed, fan?"GPU":"CPU");
+ } else
+ return;
+
+ if (speed >= 0) {
+ manual = read_reg(th, MANUAL_MODE[fan]);
+ write_reg(th, MANUAL_MODE[fan], manual|MANUAL_MASK);
+ write_reg(th, FAN_SPD_SET[fan], speed);
+ } else {
+ /* back to automatic */
+ if(therm_type == ADT7460) {
+ manual = read_reg(th,
+ MANUAL_MODE[fan]) & (~MANUAL_MASK);
+
+ write_reg(th,
+ MANUAL_MODE[fan], manual|REM_CONTROL[fan]);
+ } else {
+ manual = read_reg(th, MANUAL_MODE[fan]);
+ write_reg(th, MANUAL_MODE[fan], manual&(~AUTO_MASK));
+ }
+ }
+
+ th->last_speed[fan] = speed;
+}
+
+static void read_sensors(struct thermostat *th)
+{
+ int i = 0;
+
+ for (i = 0; i < 3; i++)
+ th->temps[i] = read_reg(th, TEMP_REG[i]);
+}
+
+#ifdef DEBUG
+static void display_stats(struct thermostat *th)
+{
+ if (th->temps[0] != th->cached_temp[0]
+ || th->temps[1] != th->cached_temp[1]
+ || th->temps[2] != th->cached_temp[2]) {
+ printk(KERN_INFO "adt746x: Temperature infos:"
+ " thermostats: %d,%d,%d;"
+ " limits: %d,%d,%d;"
+ " fan speed: %d RPM\n",
+ th->temps[0], th->temps[1], th->temps[2],
+ th->limits[0], th->limits[1], th->limits[2],
+ read_fan_speed(th, FAN_SPEED[0]));
+ }
+ th->cached_temp[0] = th->temps[0];
+ th->cached_temp[1] = th->temps[1];
+ th->cached_temp[2] = th->temps[2];
+}
+#endif
+
+static void update_fans_speed (struct thermostat *th)
+{
+ int lastvar = 0; /* last variation, for iBook */
+ int i = 0;
+
+ /* we don't care about local sensor, so we start at sensor 1 */
+ for (i = 1; i < 3; i++) {
+ int started = 0;
+ int fan_number = (therm_type == ADT7460 && i == 2);
+ int var = th->temps[i] - th->limits[i];
+
+ if (var > -1) {
+ int step = (255 - fan_speed) / 7;
+ int new_speed = 0;
+
+ /* hysteresis : change fan speed only if variation is
+ * more than two degrees */
+ if (abs(var - th->last_var[fan_number]) < 2)
+ continue;
+
+ started = 1;
+ new_speed = fan_speed + ((var-1)*step);
+
+ if (new_speed < fan_speed)
+ new_speed = fan_speed;
+ if (new_speed > 255)
+ new_speed = 255;
+
+ printk(KERN_DEBUG "adt746x: setting fans speed to %d "
+ "(limit exceeded by %d on %s) \n",
+ new_speed, var,
+ fan_number?"GPU/pwr":"CPU");
+ write_both_fan_speed(th, new_speed);
+ th->last_var[fan_number] = var;
+ } else if (var < -2) {
+ /* don't stop fan if GPU/power is cold and CPU is not
+ * so cold (lastvar >= -1) */
+ if (i == 2 && lastvar < -1) {
+ if (th->last_speed[fan_number] != 0)
+ printk(KERN_DEBUG "adt746x: Stopping "
+ "fans.\n");
+ write_both_fan_speed(th, 0);
+ }
+ }
+
+ lastvar = var;
+
+ if (started)
+ return; /* we don't want to re-stop the fan
+ * if CPU is heating and GPU/power is not */
+ }
+}
+
+static int monitor_task(void *arg)
+{
+ struct thermostat* th = arg;
+
+ while(!kthread_should_stop()) {
+ if (current->flags & PF_FREEZE)
+ refrigerator(PF_FREEZE);
+
+ msleep_interruptible(2000);
+
+#ifndef DEBUG
+ if (fan_speed != -1)
+ read_sensors(th);
+#else
+ read_sensors(th);
+#endif
+
+ if (fan_speed != -1)
+ update_fans_speed(th);
+
+#ifdef DEBUG
+ display_stats(th);
+#endif
+
+ }
+
+ return 0;
+}
+
+static void set_limit(struct thermostat *th, int i)
+{
+ /* Set CPU limit higher to avoid powerdowns */
+ th->limits[i] = default_limits_chip[i] + limit_adjust;
+ write_reg(th, LIMIT_REG[i], th->limits[i]);
+
+ /* set our limits to normal */
+ th->limits[i] = default_limits_local[i] + limit_adjust;
+}
+
+static int attach_one_thermostat(struct i2c_adapter *adapter, int addr,
+ int busno)
+{
+ struct thermostat* th;
+ int rc;
+ int i;
+
+ if (thermostat)
+ return 0;
+
+ th = (struct thermostat *)
+ kmalloc(sizeof(struct thermostat), GFP_KERNEL);
+
+ if (!th)
+ return -ENOMEM;
+
+ memset(th, 0, sizeof(*th));
+ th->clt.addr = addr;
+ th->clt.adapter = adapter;
+ th->clt.driver = &thermostat_driver;
+ strcpy(th->clt.name, "thermostat");
+
+ rc = read_reg(th, 0);
+ if (rc < 0) {
+ printk(KERN_ERR "adt746x: Thermostat failed to read config "
+ "from bus %d !\n",
+ busno);
+ kfree(th);
+ return -ENODEV;
+ }
+
+ /* force manual control to start the fan quieter */
+ if (fan_speed == -1)
+ fan_speed = 64;
+
+ if(therm_type == ADT7460) {
+ printk(KERN_INFO "adt746x: ADT7460 initializing\n");
+ /* The 7460 needs to be started explicitly */
+ write_reg(th, CONFIG_REG, 1);
+ } else
+ printk(KERN_INFO "adt746x: ADT7467 initializing\n");
+
+ for (i = 0; i < 3; i++) {
+ th->initial_limits[i] = read_reg(th, LIMIT_REG[i]);
+ set_limit(th, i);
+ }
+
+ printk(KERN_INFO "adt746x: Lowering max temperatures from %d, %d, %d"
+ " to %d, %d, %d\n",
+ th->initial_limits[0], th->initial_limits[1],
+ th->initial_limits[2], th->limits[0], th->limits[1],
+ th->limits[2]);
+
+ thermostat = th;
+
+ if (i2c_attach_client(&th->clt)) {
+ printk(KERN_INFO "adt746x: Thermostat failed to attach "
+ "client !\n");
+ thermostat = NULL;
+ kfree(th);
+ return -ENODEV;
+ }
+
+ /* be sure to really write fan speed the first time */
+ th->last_speed[0] = -2;
+ th->last_speed[1] = -2;
+ th->last_var[0] = -80;
+ th->last_var[1] = -80;
+
+ if (fan_speed != -1) {
+ /* manual mode, stop fans */
+ write_both_fan_speed(th, 0);
+ } else {
+ /* automatic mode */
+ write_both_fan_speed(th, -1);
+ }
+
+ thread_therm = kthread_run(monitor_task, th, "kfand");
+
+ if (thread_therm == ERR_PTR(-ENOMEM)) {
+ printk(KERN_INFO "adt746x: Kthread creation failed\n");
+ thread_therm = NULL;
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+/*
+ * Now, unfortunately, sysfs doesn't give us a nice void * we could
+ * pass around to the attribute functions, so we don't really have
+ * choice but implement a bunch of them...
+ *
+ */
+#define BUILD_SHOW_FUNC_INT(name, data) \
+static ssize_t show_##name(struct device *dev, char *buf) \
+{ \
+ return sprintf(buf, "%d\n", data); \
+}
+
+#define BUILD_SHOW_FUNC_FAN(name, data) \
+static ssize_t show_##name(struct device *dev, char *buf) \
+{ \
+ return sprintf(buf, "%d (%d rpm)\n", \
+ thermostat->last_speed[data], \
+ read_fan_speed(thermostat, FAN_SPEED[data]) \
+ ); \
+}
+
+#define BUILD_STORE_FUNC_DEG(name, data) \
+static ssize_t store_##name(struct device *dev, const char *buf, size_t n) \
+{ \
+ int val; \
+ int i; \
+ val = simple_strtol(buf, NULL, 10); \
+ printk(KERN_INFO "Adjusting limits by %d°C\n", val); \
+ limit_adjust = val; \
+ for (i=0; i < 3; i++) \
+ set_limit(thermostat, i); \
+ return n; \
+}
+
+#define BUILD_STORE_FUNC_INT(name, data) \
+static ssize_t store_##name(struct device *dev, const char *buf, size_t n) \
+{ \
+ u32 val; \
+ val = simple_strtoul(buf, NULL, 10); \
+ if (val < 0 || val > 255) \
+ return -EINVAL; \
+ printk(KERN_INFO "Setting specified fan speed to %d\n", val); \
+ data = val; \
+ return n; \
+}
+
+BUILD_SHOW_FUNC_INT(cpu_temperature, (read_reg(thermostat, TEMP_REG[1])))
+BUILD_SHOW_FUNC_INT(gpu_temperature, (read_reg(thermostat, TEMP_REG[2])))
+BUILD_SHOW_FUNC_INT(cpu_limit, thermostat->limits[1])
+BUILD_SHOW_FUNC_INT(gpu_limit, thermostat->limits[2])
+
+BUILD_SHOW_FUNC_INT(specified_fan_speed, fan_speed)
+BUILD_SHOW_FUNC_FAN(cpu_fan_speed, 0)
+BUILD_SHOW_FUNC_FAN(gpu_fan_speed, 1)
+
+BUILD_STORE_FUNC_INT(specified_fan_speed,fan_speed)
+BUILD_SHOW_FUNC_INT(limit_adjust, limit_adjust)
+BUILD_STORE_FUNC_DEG(limit_adjust, thermostat)
+
+static DEVICE_ATTR(cpu_temperature, S_IRUGO,
+ show_cpu_temperature,NULL);
+static DEVICE_ATTR(gpu_temperature, S_IRUGO,
+ show_gpu_temperature,NULL);
+static DEVICE_ATTR(cpu_limit, S_IRUGO,
+ show_cpu_limit, NULL);
+static DEVICE_ATTR(gpu_limit, S_IRUGO,
+ show_gpu_limit, NULL);
+
+static DEVICE_ATTR(specified_fan_speed, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH,
+ show_specified_fan_speed,store_specified_fan_speed);
+
+static DEVICE_ATTR(cpu_fan_speed, S_IRUGO,
+ show_cpu_fan_speed, NULL);
+static DEVICE_ATTR(gpu_fan_speed, S_IRUGO,
+ show_gpu_fan_speed, NULL);
+
+static DEVICE_ATTR(limit_adjust, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH,
+ show_limit_adjust, store_limit_adjust);
+
+
+static int __init
+thermostat_init(void)
+{
+ struct device_node* np;
+ u32 *prop;
+
+ np = of_find_node_by_name(NULL, "fan");
+ if (!np)
+ return -ENODEV;
+ if (device_is_compatible(np, "adt7460"))
+ therm_type = ADT7460;
+ else if (device_is_compatible(np, "adt7467"))
+ therm_type = ADT7467;
+ else
+ return -ENODEV;
+
+ prop = (u32 *)get_property(np, "reg", NULL);
+ if (!prop)
+ return -ENODEV;
+
+ /* look for bus either by path or using "reg" */
+ if (strstr(np->full_name, "/i2c-bus@") != NULL) {
+ const char *tmp_bus = (strstr(np->full_name, "/i2c-bus@") + 9);
+ therm_bus = tmp_bus[0]-'0';
+ } else {
+ therm_bus = ((*prop) >> 8) & 0x0f;
+ }
+
+ therm_address = ((*prop) & 0xff) >> 1;
+
+ printk(KERN_INFO "adt746x: Thermostat bus: %d, address: 0x%02x, "
+ "limit_adjust: %d, fan_speed: %d\n",
+ therm_bus, therm_address, limit_adjust, fan_speed);
+
+ of_dev = of_platform_device_create(np, "temperatures");
+
+ if (of_dev == NULL) {
+ printk(KERN_ERR "Can't register temperatures device !\n");
+ return -ENODEV;
+ }
+
+ device_create_file(&of_dev->dev, &dev_attr_cpu_temperature);
+ device_create_file(&of_dev->dev, &dev_attr_gpu_temperature);
+ device_create_file(&of_dev->dev, &dev_attr_cpu_limit);
+ device_create_file(&of_dev->dev, &dev_attr_gpu_limit);
+ device_create_file(&of_dev->dev, &dev_attr_limit_adjust);
+ device_create_file(&of_dev->dev, &dev_attr_specified_fan_speed);
+ device_create_file(&of_dev->dev, &dev_attr_cpu_fan_speed);
+ if(therm_type == ADT7460)
+ device_create_file(&of_dev->dev, &dev_attr_gpu_fan_speed);
+
+#ifndef CONFIG_I2C_KEYWEST
+ request_module("i2c-keywest");
+#endif
+
+ return i2c_add_driver(&thermostat_driver);
+}
+
+static void __exit
+thermostat_exit(void)
+{
+ if (of_dev) {
+ device_remove_file(&of_dev->dev, &dev_attr_cpu_temperature);
+ device_remove_file(&of_dev->dev, &dev_attr_gpu_temperature);
+ device_remove_file(&of_dev->dev, &dev_attr_cpu_limit);
+ device_remove_file(&of_dev->dev, &dev_attr_gpu_limit);
+ device_remove_file(&of_dev->dev, &dev_attr_limit_adjust);
+ device_remove_file(&of_dev->dev, &dev_attr_specified_fan_speed);
+ device_remove_file(&of_dev->dev, &dev_attr_cpu_fan_speed);
+
+ if(therm_type == ADT7460)
+ device_remove_file(&of_dev->dev,
+ &dev_attr_gpu_fan_speed);
+
+ of_device_unregister(of_dev);
+ }
+ i2c_del_driver(&thermostat_driver);
+}
+
+module_init(thermostat_init);
+module_exit(thermostat_exit);
diff --git a/drivers/macintosh/therm_pm72.c b/drivers/macintosh/therm_pm72.c
new file mode 100644
index 000000000000..82336a5a5474
--- /dev/null
+++ b/drivers/macintosh/therm_pm72.c
@@ -0,0 +1,2080 @@
+/*
+ * Device driver for the thermostats & fan controller of the
+ * Apple G5 "PowerMac7,2" desktop machines.
+ *
+ * (c) Copyright IBM Corp. 2003-2004
+ *
+ * Maintained by: Benjamin Herrenschmidt
+ * <benh@kernel.crashing.org>
+ *
+ *
+ * The algorithm used is the PID control algorithm, used the same
+ * way the published Darwin code does, using the same values that
+ * are present in the Darwin 7.0 snapshot property lists.
+ *
+ * As far as the CPUs control loops are concerned, I use the
+ * calibration & PID constants provided by the EEPROM,
+ * I do _not_ embed any value from the property lists, as the ones
+ * provided by Darwin 7.0 seem to always have an older version that
+ * what I've seen on the actual computers.
+ * It would be interesting to verify that though. Darwin has a
+ * version code of 1.0.0d11 for all control loops it seems, while
+ * so far, the machines EEPROMs contain a dataset versioned 1.0.0f
+ *
+ * Darwin doesn't provide source to all parts, some missing
+ * bits like the AppleFCU driver or the actual scale of some
+ * of the values returned by sensors had to be "guessed" some
+ * way... or based on what Open Firmware does.
+ *
+ * I didn't yet figure out how to get the slots power consumption
+ * out of the FCU, so that part has not been implemented yet and
+ * the slots fan is set to a fixed 50% PWM, hoping this value is
+ * safe enough ...
+ *
+ * Note: I have observed strange oscillations of the CPU control
+ * loop on a dual G5 here. When idle, the CPU exhaust fan tend to
+ * oscillates slowly (over several minutes) between the minimum
+ * of 300RPMs and approx. 1000 RPMs. I don't know what is causing
+ * this, it could be some incorrect constant or an error in the
+ * way I ported the algorithm, or it could be just normal. I
+ * don't have full understanding on the way Apple tweaked the PID
+ * algorithm for the CPU control, it is definitely not a standard
+ * implementation...
+ *
+ * TODO: - Check MPU structure version/signature
+ * - Add things like /sbin/overtemp for non-critical
+ * overtemp conditions so userland can take some policy
+ * decisions, like slewing down CPUs
+ * - Deal with fan and i2c failures in a better way
+ * - Maybe do a generic PID based on params used for
+ * U3 and Drives ? Definitely need to factor code a bit
+ * bettter... also make sensor detection more robust using
+ * the device-tree to probe for them
+ * - Figure out how to get the slots consumption and set the
+ * slots fan accordingly
+ *
+ * History:
+ *
+ * Nov. 13, 2003 : 0.5
+ * - First release
+ *
+ * Nov. 14, 2003 : 0.6
+ * - Read fan speed from FCU, low level fan routines now deal
+ * with errors & check fan status, though higher level don't
+ * do much.
+ * - Move a bunch of definitions to .h file
+ *
+ * Nov. 18, 2003 : 0.7
+ * - Fix build on ppc64 kernel
+ * - Move back statics definitions to .c file
+ * - Avoid calling schedule_timeout with a negative number
+ *
+ * Dec. 18, 2003 : 0.8
+ * - Fix typo when reading back fan speed on 2 CPU machines
+ *
+ * Mar. 11, 2004 : 0.9
+ * - Rework code accessing the ADC chips, make it more robust and
+ * closer to the chip spec. Also make sure it is configured properly,
+ * I've seen yet unexplained cases where on startup, I would have stale
+ * values in the configuration register
+ * - Switch back to use of target fan speed for PID, thus lowering
+ * pressure on i2c
+ *
+ * Oct. 20, 2004 : 1.1
+ * - Add device-tree lookup for fan IDs, should detect liquid cooling
+ * pumps when present
+ * - Enable driver for PowerMac7,3 machines
+ * - Split the U3/Backside cooling on U3 & U3H versions as Darwin does
+ * - Add new CPU cooling algorithm for machines with liquid cooling
+ * - Workaround for some PowerMac7,3 with empty "fan" node in the devtree
+ * - Fix a signed/unsigned compare issue in some PID loops
+ *
+ * Mar. 10, 2005 : 1.2
+ * - Add basic support for Xserve G5
+ * - Retreive pumps min/max from EEPROM image in device-tree (broken)
+ * - Use min/max macros here or there
+ * - Latest darwin updated U3H min fan speed to 20% PWM
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/smp_lock.h>
+#include <linux/wait.h>
+#include <linux/reboot.h>
+#include <linux/kmod.h>
+#include <linux/i2c.h>
+#include <linux/i2c-dev.h>
+#include <asm/prom.h>
+#include <asm/machdep.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/sections.h>
+#include <asm/of_device.h>
+
+#include "therm_pm72.h"
+
+#define VERSION "1.2b2"
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DBG(args...) printk(args)
+#else
+#define DBG(args...) do { } while(0)
+#endif
+
+
+/*
+ * Driver statics
+ */
+
+static struct of_device * of_dev;
+static struct i2c_adapter * u3_0;
+static struct i2c_adapter * u3_1;
+static struct i2c_adapter * k2;
+static struct i2c_client * fcu;
+static struct cpu_pid_state cpu_state[2];
+static struct basckside_pid_params backside_params;
+static struct backside_pid_state backside_state;
+static struct drives_pid_state drives_state;
+static struct dimm_pid_state dimms_state;
+static int state;
+static int cpu_count;
+static int cpu_pid_type;
+static pid_t ctrl_task;
+static struct completion ctrl_complete;
+static int critical_state;
+static int rackmac;
+static s32 dimm_output_clamp;
+
+static DECLARE_MUTEX(driver_lock);
+
+/*
+ * We have 3 types of CPU PID control. One is "split" old style control
+ * for intake & exhaust fans, the other is "combined" control for both
+ * CPUs that also deals with the pumps when present. To be "compatible"
+ * with OS X at this point, we only use "COMBINED" on the machines that
+ * are identified as having the pumps (though that identification is at
+ * least dodgy). Ultimately, we could probably switch completely to this
+ * algorithm provided we hack it to deal with the UP case
+ */
+#define CPU_PID_TYPE_SPLIT 0
+#define CPU_PID_TYPE_COMBINED 1
+#define CPU_PID_TYPE_RACKMAC 2
+
+/*
+ * This table describes all fans in the FCU. The "id" and "type" values
+ * are defaults valid for all earlier machines. Newer machines will
+ * eventually override the table content based on the device-tree
+ */
+struct fcu_fan_table
+{
+ char* loc; /* location code */
+ int type; /* 0 = rpm, 1 = pwm, 2 = pump */
+ int id; /* id or -1 */
+};
+
+#define FCU_FAN_RPM 0
+#define FCU_FAN_PWM 1
+
+#define FCU_FAN_ABSENT_ID -1
+
+#define FCU_FAN_COUNT ARRAY_SIZE(fcu_fans)
+
+struct fcu_fan_table fcu_fans[] = {
+ [BACKSIDE_FAN_PWM_INDEX] = {
+ .loc = "BACKSIDE,SYS CTRLR FAN",
+ .type = FCU_FAN_PWM,
+ .id = BACKSIDE_FAN_PWM_DEFAULT_ID,
+ },
+ [DRIVES_FAN_RPM_INDEX] = {
+ .loc = "DRIVE BAY",
+ .type = FCU_FAN_RPM,
+ .id = DRIVES_FAN_RPM_DEFAULT_ID,
+ },
+ [SLOTS_FAN_PWM_INDEX] = {
+ .loc = "SLOT,PCI FAN",
+ .type = FCU_FAN_PWM,
+ .id = SLOTS_FAN_PWM_DEFAULT_ID,
+ },
+ [CPUA_INTAKE_FAN_RPM_INDEX] = {
+ .loc = "CPU A INTAKE",
+ .type = FCU_FAN_RPM,
+ .id = CPUA_INTAKE_FAN_RPM_DEFAULT_ID,
+ },
+ [CPUA_EXHAUST_FAN_RPM_INDEX] = {
+ .loc = "CPU A EXHAUST",
+ .type = FCU_FAN_RPM,
+ .id = CPUA_EXHAUST_FAN_RPM_DEFAULT_ID,
+ },
+ [CPUB_INTAKE_FAN_RPM_INDEX] = {
+ .loc = "CPU B INTAKE",
+ .type = FCU_FAN_RPM,
+ .id = CPUB_INTAKE_FAN_RPM_DEFAULT_ID,
+ },
+ [CPUB_EXHAUST_FAN_RPM_INDEX] = {
+ .loc = "CPU B EXHAUST",
+ .type = FCU_FAN_RPM,
+ .id = CPUB_EXHAUST_FAN_RPM_DEFAULT_ID,
+ },
+ /* pumps aren't present by default, have to be looked up in the
+ * device-tree
+ */
+ [CPUA_PUMP_RPM_INDEX] = {
+ .loc = "CPU A PUMP",
+ .type = FCU_FAN_RPM,
+ .id = FCU_FAN_ABSENT_ID,
+ },
+ [CPUB_PUMP_RPM_INDEX] = {
+ .loc = "CPU B PUMP",
+ .type = FCU_FAN_RPM,
+ .id = FCU_FAN_ABSENT_ID,
+ },
+ /* Xserve fans */
+ [CPU_A1_FAN_RPM_INDEX] = {
+ .loc = "CPU A 1",
+ .type = FCU_FAN_RPM,
+ .id = FCU_FAN_ABSENT_ID,
+ },
+ [CPU_A2_FAN_RPM_INDEX] = {
+ .loc = "CPU A 2",
+ .type = FCU_FAN_RPM,
+ .id = FCU_FAN_ABSENT_ID,
+ },
+ [CPU_A3_FAN_RPM_INDEX] = {
+ .loc = "CPU A 3",
+ .type = FCU_FAN_RPM,
+ .id = FCU_FAN_ABSENT_ID,
+ },
+ [CPU_B1_FAN_RPM_INDEX] = {
+ .loc = "CPU B 1",
+ .type = FCU_FAN_RPM,
+ .id = FCU_FAN_ABSENT_ID,
+ },
+ [CPU_B2_FAN_RPM_INDEX] = {
+ .loc = "CPU B 2",
+ .type = FCU_FAN_RPM,
+ .id = FCU_FAN_ABSENT_ID,
+ },
+ [CPU_B3_FAN_RPM_INDEX] = {
+ .loc = "CPU B 3",
+ .type = FCU_FAN_RPM,
+ .id = FCU_FAN_ABSENT_ID,
+ },
+};
+
+/*
+ * i2c_driver structure to attach to the host i2c controller
+ */
+
+static int therm_pm72_attach(struct i2c_adapter *adapter);
+static int therm_pm72_detach(struct i2c_adapter *adapter);
+
+static struct i2c_driver therm_pm72_driver =
+{
+ .owner = THIS_MODULE,
+ .name = "therm_pm72",
+ .flags = I2C_DF_NOTIFY,
+ .attach_adapter = therm_pm72_attach,
+ .detach_adapter = therm_pm72_detach,
+};
+
+/*
+ * Utility function to create an i2c_client structure and
+ * attach it to one of u3 adapters
+ */
+static struct i2c_client *attach_i2c_chip(int id, const char *name)
+{
+ struct i2c_client *clt;
+ struct i2c_adapter *adap;
+
+ if (id & 0x200)
+ adap = k2;
+ else if (id & 0x100)
+ adap = u3_1;
+ else
+ adap = u3_0;
+ if (adap == NULL)
+ return NULL;
+
+ clt = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+ if (clt == NULL)
+ return NULL;
+ memset(clt, 0, sizeof(struct i2c_client));
+
+ clt->addr = (id >> 1) & 0x7f;
+ clt->adapter = adap;
+ clt->driver = &therm_pm72_driver;
+ strncpy(clt->name, name, I2C_NAME_SIZE-1);
+
+ if (i2c_attach_client(clt)) {
+ printk(KERN_ERR "therm_pm72: Failed to attach to i2c ID 0x%x\n", id);
+ kfree(clt);
+ return NULL;
+ }
+ return clt;
+}
+
+/*
+ * Utility function to get rid of the i2c_client structure
+ * (will also detach from the adapter hopepfully)
+ */
+static void detach_i2c_chip(struct i2c_client *clt)
+{
+ i2c_detach_client(clt);
+ kfree(clt);
+}
+
+/*
+ * Here are the i2c chip access wrappers
+ */
+
+static void initialize_adc(struct cpu_pid_state *state)
+{
+ int rc;
+ u8 buf[2];
+
+ /* Read ADC the configuration register and cache it. We
+ * also make sure Config2 contains proper values, I've seen
+ * cases where we got stale grabage in there, thus preventing
+ * proper reading of conv. values
+ */
+
+ /* Clear Config2 */
+ buf[0] = 5;
+ buf[1] = 0;
+ i2c_master_send(state->monitor, buf, 2);
+
+ /* Read & cache Config1 */
+ buf[0] = 1;
+ rc = i2c_master_send(state->monitor, buf, 1);
+ if (rc > 0) {
+ rc = i2c_master_recv(state->monitor, buf, 1);
+ if (rc > 0) {
+ state->adc_config = buf[0];
+ DBG("ADC config reg: %02x\n", state->adc_config);
+ /* Disable shutdown mode */
+ state->adc_config &= 0xfe;
+ buf[0] = 1;
+ buf[1] = state->adc_config;
+ rc = i2c_master_send(state->monitor, buf, 2);
+ }
+ }
+ if (rc <= 0)
+ printk(KERN_ERR "therm_pm72: Error reading ADC config"
+ " register !\n");
+}
+
+static int read_smon_adc(struct cpu_pid_state *state, int chan)
+{
+ int rc, data, tries = 0;
+ u8 buf[2];
+
+ for (;;) {
+ /* Set channel */
+ buf[0] = 1;
+ buf[1] = (state->adc_config & 0x1f) | (chan << 5);
+ rc = i2c_master_send(state->monitor, buf, 2);
+ if (rc <= 0)
+ goto error;
+ /* Wait for convertion */
+ msleep(1);
+ /* Switch to data register */
+ buf[0] = 4;
+ rc = i2c_master_send(state->monitor, buf, 1);
+ if (rc <= 0)
+ goto error;
+ /* Read result */
+ rc = i2c_master_recv(state->monitor, buf, 2);
+ if (rc < 0)
+ goto error;
+ data = ((u16)buf[0]) << 8 | (u16)buf[1];
+ return data >> 6;
+ error:
+ DBG("Error reading ADC, retrying...\n");
+ if (++tries > 10) {
+ printk(KERN_ERR "therm_pm72: Error reading ADC !\n");
+ return -1;
+ }
+ msleep(10);
+ }
+}
+
+static int read_lm87_reg(struct i2c_client * chip, int reg)
+{
+ int rc, tries = 0;
+ u8 buf;
+
+ for (;;) {
+ /* Set address */
+ buf = (u8)reg;
+ rc = i2c_master_send(chip, &buf, 1);
+ if (rc <= 0)
+ goto error;
+ rc = i2c_master_recv(chip, &buf, 1);
+ if (rc <= 0)
+ goto error;
+ return (int)buf;
+ error:
+ DBG("Error reading LM87, retrying...\n");
+ if (++tries > 10) {
+ printk(KERN_ERR "therm_pm72: Error reading LM87 !\n");
+ return -1;
+ }
+ msleep(10);
+ }
+}
+
+static int fan_read_reg(int reg, unsigned char *buf, int nb)
+{
+ int tries, nr, nw;
+
+ buf[0] = reg;
+ tries = 0;
+ for (;;) {
+ nw = i2c_master_send(fcu, buf, 1);
+ if (nw > 0 || (nw < 0 && nw != -EIO) || tries >= 100)
+ break;
+ msleep(10);
+ ++tries;
+ }
+ if (nw <= 0) {
+ printk(KERN_ERR "Failure writing address to FCU: %d", nw);
+ return -EIO;
+ }
+ tries = 0;
+ for (;;) {
+ nr = i2c_master_recv(fcu, buf, nb);
+ if (nr > 0 || (nr < 0 && nr != ENODEV) || tries >= 100)
+ break;
+ msleep(10);
+ ++tries;
+ }
+ if (nr <= 0)
+ printk(KERN_ERR "Failure reading data from FCU: %d", nw);
+ return nr;
+}
+
+static int fan_write_reg(int reg, const unsigned char *ptr, int nb)
+{
+ int tries, nw;
+ unsigned char buf[16];
+
+ buf[0] = reg;
+ memcpy(buf+1, ptr, nb);
+ ++nb;
+ tries = 0;
+ for (;;) {
+ nw = i2c_master_send(fcu, buf, nb);
+ if (nw > 0 || (nw < 0 && nw != EIO) || tries >= 100)
+ break;
+ msleep(10);
+ ++tries;
+ }
+ if (nw < 0)
+ printk(KERN_ERR "Failure writing to FCU: %d", nw);
+ return nw;
+}
+
+static int start_fcu(void)
+{
+ unsigned char buf = 0xff;
+ int rc;
+
+ rc = fan_write_reg(0xe, &buf, 1);
+ if (rc < 0)
+ return -EIO;
+ rc = fan_write_reg(0x2e, &buf, 1);
+ if (rc < 0)
+ return -EIO;
+ return 0;
+}
+
+static int set_rpm_fan(int fan_index, int rpm)
+{
+ unsigned char buf[2];
+ int rc, id;
+
+ if (fcu_fans[fan_index].type != FCU_FAN_RPM)
+ return -EINVAL;
+ id = fcu_fans[fan_index].id;
+ if (id == FCU_FAN_ABSENT_ID)
+ return -EINVAL;
+
+ if (rpm < 300)
+ rpm = 300;
+ else if (rpm > 8191)
+ rpm = 8191;
+ buf[0] = rpm >> 5;
+ buf[1] = rpm << 3;
+ rc = fan_write_reg(0x10 + (id * 2), buf, 2);
+ if (rc < 0)
+ return -EIO;
+ return 0;
+}
+
+static int get_rpm_fan(int fan_index, int programmed)
+{
+ unsigned char failure;
+ unsigned char active;
+ unsigned char buf[2];
+ int rc, id, reg_base;
+
+ if (fcu_fans[fan_index].type != FCU_FAN_RPM)
+ return -EINVAL;
+ id = fcu_fans[fan_index].id;
+ if (id == FCU_FAN_ABSENT_ID)
+ return -EINVAL;
+
+ rc = fan_read_reg(0xb, &failure, 1);
+ if (rc != 1)
+ return -EIO;
+ if ((failure & (1 << id)) != 0)
+ return -EFAULT;
+ rc = fan_read_reg(0xd, &active, 1);
+ if (rc != 1)
+ return -EIO;
+ if ((active & (1 << id)) == 0)
+ return -ENXIO;
+
+ /* Programmed value or real current speed */
+ reg_base = programmed ? 0x10 : 0x11;
+ rc = fan_read_reg(reg_base + (id * 2), buf, 2);
+ if (rc != 2)
+ return -EIO;
+
+ return (buf[0] << 5) | buf[1] >> 3;
+}
+
+static int set_pwm_fan(int fan_index, int pwm)
+{
+ unsigned char buf[2];
+ int rc, id;
+
+ if (fcu_fans[fan_index].type != FCU_FAN_PWM)
+ return -EINVAL;
+ id = fcu_fans[fan_index].id;
+ if (id == FCU_FAN_ABSENT_ID)
+ return -EINVAL;
+
+ if (pwm < 10)
+ pwm = 10;
+ else if (pwm > 100)
+ pwm = 100;
+ pwm = (pwm * 2559) / 1000;
+ buf[0] = pwm;
+ rc = fan_write_reg(0x30 + (id * 2), buf, 1);
+ if (rc < 0)
+ return rc;
+ return 0;
+}
+
+static int get_pwm_fan(int fan_index)
+{
+ unsigned char failure;
+ unsigned char active;
+ unsigned char buf[2];
+ int rc, id;
+
+ if (fcu_fans[fan_index].type != FCU_FAN_PWM)
+ return -EINVAL;
+ id = fcu_fans[fan_index].id;
+ if (id == FCU_FAN_ABSENT_ID)
+ return -EINVAL;
+
+ rc = fan_read_reg(0x2b, &failure, 1);
+ if (rc != 1)
+ return -EIO;
+ if ((failure & (1 << id)) != 0)
+ return -EFAULT;
+ rc = fan_read_reg(0x2d, &active, 1);
+ if (rc != 1)
+ return -EIO;
+ if ((active & (1 << id)) == 0)
+ return -ENXIO;
+
+ /* Programmed value or real current speed */
+ rc = fan_read_reg(0x30 + (id * 2), buf, 1);
+ if (rc != 1)
+ return -EIO;
+
+ return (buf[0] * 1000) / 2559;
+}
+
+/*
+ * Utility routine to read the CPU calibration EEPROM data
+ * from the device-tree
+ */
+static int read_eeprom(int cpu, struct mpu_data *out)
+{
+ struct device_node *np;
+ char nodename[64];
+ u8 *data;
+ int len;
+
+ /* prom.c routine for finding a node by path is a bit brain dead
+ * and requires exact @xxx unit numbers. This is a bit ugly but
+ * will work for these machines
+ */
+ sprintf(nodename, "/u3@0,f8000000/i2c@f8001000/cpuid@a%d", cpu ? 2 : 0);
+ np = of_find_node_by_path(nodename);
+ if (np == NULL) {
+ printk(KERN_ERR "therm_pm72: Failed to retreive cpuid node from device-tree\n");
+ return -ENODEV;
+ }
+ data = (u8 *)get_property(np, "cpuid", &len);
+ if (data == NULL) {
+ printk(KERN_ERR "therm_pm72: Failed to retreive cpuid property from device-tree\n");
+ of_node_put(np);
+ return -ENODEV;
+ }
+ memcpy(out, data, sizeof(struct mpu_data));
+ of_node_put(np);
+
+ return 0;
+}
+
+static void fetch_cpu_pumps_minmax(void)
+{
+ struct cpu_pid_state *state0 = &cpu_state[0];
+ struct cpu_pid_state *state1 = &cpu_state[1];
+ u16 pump_min = 0, pump_max = 0xffff;
+ u16 tmp[4];
+
+ /* Try to fetch pumps min/max infos from eeprom */
+
+ memcpy(&tmp, &state0->mpu.processor_part_num, 8);
+ if (tmp[0] != 0xffff && tmp[1] != 0xffff) {
+ pump_min = max(pump_min, tmp[0]);
+ pump_max = min(pump_max, tmp[1]);
+ }
+ if (tmp[2] != 0xffff && tmp[3] != 0xffff) {
+ pump_min = max(pump_min, tmp[2]);
+ pump_max = min(pump_max, tmp[3]);
+ }
+
+ /* Double check the values, this _IS_ needed as the EEPROM on
+ * some dual 2.5Ghz G5s seem, at least, to have both min & max
+ * same to the same value ... (grrrr)
+ */
+ if (pump_min == pump_max || pump_min == 0 || pump_max == 0xffff) {
+ pump_min = CPU_PUMP_OUTPUT_MIN;
+ pump_max = CPU_PUMP_OUTPUT_MAX;
+ }
+
+ state0->pump_min = state1->pump_min = pump_min;
+ state0->pump_max = state1->pump_max = pump_max;
+}
+
+/*
+ * Now, unfortunately, sysfs doesn't give us a nice void * we could
+ * pass around to the attribute functions, so we don't really have
+ * choice but implement a bunch of them...
+ *
+ * That sucks a bit, we take the lock because FIX32TOPRINT evaluates
+ * the input twice... I accept patches :)
+ */
+#define BUILD_SHOW_FUNC_FIX(name, data) \
+static ssize_t show_##name(struct device *dev, char *buf) \
+{ \
+ ssize_t r; \
+ down(&driver_lock); \
+ r = sprintf(buf, "%d.%03d", FIX32TOPRINT(data)); \
+ up(&driver_lock); \
+ return r; \
+}
+#define BUILD_SHOW_FUNC_INT(name, data) \
+static ssize_t show_##name(struct device *dev, char *buf) \
+{ \
+ return sprintf(buf, "%d", data); \
+}
+
+BUILD_SHOW_FUNC_FIX(cpu0_temperature, cpu_state[0].last_temp)
+BUILD_SHOW_FUNC_FIX(cpu0_voltage, cpu_state[0].voltage)
+BUILD_SHOW_FUNC_FIX(cpu0_current, cpu_state[0].current_a)
+BUILD_SHOW_FUNC_INT(cpu0_exhaust_fan_rpm, cpu_state[0].rpm)
+BUILD_SHOW_FUNC_INT(cpu0_intake_fan_rpm, cpu_state[0].intake_rpm)
+
+BUILD_SHOW_FUNC_FIX(cpu1_temperature, cpu_state[1].last_temp)
+BUILD_SHOW_FUNC_FIX(cpu1_voltage, cpu_state[1].voltage)
+BUILD_SHOW_FUNC_FIX(cpu1_current, cpu_state[1].current_a)
+BUILD_SHOW_FUNC_INT(cpu1_exhaust_fan_rpm, cpu_state[1].rpm)
+BUILD_SHOW_FUNC_INT(cpu1_intake_fan_rpm, cpu_state[1].intake_rpm)
+
+BUILD_SHOW_FUNC_FIX(backside_temperature, backside_state.last_temp)
+BUILD_SHOW_FUNC_INT(backside_fan_pwm, backside_state.pwm)
+
+BUILD_SHOW_FUNC_FIX(drives_temperature, drives_state.last_temp)
+BUILD_SHOW_FUNC_INT(drives_fan_rpm, drives_state.rpm)
+
+BUILD_SHOW_FUNC_FIX(dimms_temperature, dimms_state.last_temp)
+
+static DEVICE_ATTR(cpu0_temperature,S_IRUGO,show_cpu0_temperature,NULL);
+static DEVICE_ATTR(cpu0_voltage,S_IRUGO,show_cpu0_voltage,NULL);
+static DEVICE_ATTR(cpu0_current,S_IRUGO,show_cpu0_current,NULL);
+static DEVICE_ATTR(cpu0_exhaust_fan_rpm,S_IRUGO,show_cpu0_exhaust_fan_rpm,NULL);
+static DEVICE_ATTR(cpu0_intake_fan_rpm,S_IRUGO,show_cpu0_intake_fan_rpm,NULL);
+
+static DEVICE_ATTR(cpu1_temperature,S_IRUGO,show_cpu1_temperature,NULL);
+static DEVICE_ATTR(cpu1_voltage,S_IRUGO,show_cpu1_voltage,NULL);
+static DEVICE_ATTR(cpu1_current,S_IRUGO,show_cpu1_current,NULL);
+static DEVICE_ATTR(cpu1_exhaust_fan_rpm,S_IRUGO,show_cpu1_exhaust_fan_rpm,NULL);
+static DEVICE_ATTR(cpu1_intake_fan_rpm,S_IRUGO,show_cpu1_intake_fan_rpm,NULL);
+
+static DEVICE_ATTR(backside_temperature,S_IRUGO,show_backside_temperature,NULL);
+static DEVICE_ATTR(backside_fan_pwm,S_IRUGO,show_backside_fan_pwm,NULL);
+
+static DEVICE_ATTR(drives_temperature,S_IRUGO,show_drives_temperature,NULL);
+static DEVICE_ATTR(drives_fan_rpm,S_IRUGO,show_drives_fan_rpm,NULL);
+
+static DEVICE_ATTR(dimms_temperature,S_IRUGO,show_dimms_temperature,NULL);
+
+/*
+ * CPUs fans control loop
+ */
+
+static int do_read_one_cpu_values(struct cpu_pid_state *state, s32 *temp, s32 *power)
+{
+ s32 ltemp, volts, amps;
+ int index, rc = 0;
+
+ /* Default (in case of error) */
+ *temp = state->cur_temp;
+ *power = state->cur_power;
+
+ if (cpu_pid_type == CPU_PID_TYPE_RACKMAC)
+ index = (state->index == 0) ?
+ CPU_A1_FAN_RPM_INDEX : CPU_B1_FAN_RPM_INDEX;
+ else
+ index = (state->index == 0) ?
+ CPUA_EXHAUST_FAN_RPM_INDEX : CPUB_EXHAUST_FAN_RPM_INDEX;
+
+ /* Read current fan status */
+ rc = get_rpm_fan(index, !RPM_PID_USE_ACTUAL_SPEED);
+ if (rc < 0) {
+ /* XXX What do we do now ? Nothing for now, keep old value, but
+ * return error upstream
+ */
+ DBG(" cpu %d, fan reading error !\n", state->index);
+ } else {
+ state->rpm = rc;
+ DBG(" cpu %d, exhaust RPM: %d\n", state->index, state->rpm);
+ }
+
+ /* Get some sensor readings and scale it */
+ ltemp = read_smon_adc(state, 1);
+ if (ltemp == -1) {
+ /* XXX What do we do now ? */
+ state->overtemp++;
+ if (rc == 0)
+ rc = -EIO;
+ DBG(" cpu %d, temp reading error !\n", state->index);
+ } else {
+ /* Fixup temperature according to diode calibration
+ */
+ DBG(" cpu %d, temp raw: %04x, m_diode: %04x, b_diode: %04x\n",
+ state->index,
+ ltemp, state->mpu.mdiode, state->mpu.bdiode);
+ *temp = ((s32)ltemp * (s32)state->mpu.mdiode + ((s32)state->mpu.bdiode << 12)) >> 2;
+ state->last_temp = *temp;
+ DBG(" temp: %d.%03d\n", FIX32TOPRINT((*temp)));
+ }
+
+ /*
+ * Read voltage & current and calculate power
+ */
+ volts = read_smon_adc(state, 3);
+ amps = read_smon_adc(state, 4);
+
+ /* Scale voltage and current raw sensor values according to fixed scales
+ * obtained in Darwin and calculate power from I and V
+ */
+ volts *= ADC_CPU_VOLTAGE_SCALE;
+ amps *= ADC_CPU_CURRENT_SCALE;
+ *power = (((u64)volts) * ((u64)amps)) >> 16;
+ state->voltage = volts;
+ state->current_a = amps;
+ state->last_power = *power;
+
+ DBG(" cpu %d, current: %d.%03d, voltage: %d.%03d, power: %d.%03d W\n",
+ state->index, FIX32TOPRINT(state->current_a),
+ FIX32TOPRINT(state->voltage), FIX32TOPRINT(*power));
+
+ return 0;
+}
+
+static void do_cpu_pid(struct cpu_pid_state *state, s32 temp, s32 power)
+{
+ s32 power_target, integral, derivative, proportional, adj_in_target, sval;
+ s64 integ_p, deriv_p, prop_p, sum;
+ int i;
+
+ /* Calculate power target value (could be done once for all)
+ * and convert to a 16.16 fp number
+ */
+ power_target = ((u32)(state->mpu.pmaxh - state->mpu.padjmax)) << 16;
+ DBG(" power target: %d.%03d, error: %d.%03d\n",
+ FIX32TOPRINT(power_target), FIX32TOPRINT(power_target - power));
+
+ /* Store temperature and power in history array */
+ state->cur_temp = (state->cur_temp + 1) % CPU_TEMP_HISTORY_SIZE;
+ state->temp_history[state->cur_temp] = temp;
+ state->cur_power = (state->cur_power + 1) % state->count_power;
+ state->power_history[state->cur_power] = power;
+ state->error_history[state->cur_power] = power_target - power;
+
+ /* If first loop, fill the history table */
+ if (state->first) {
+ for (i = 0; i < (state->count_power - 1); i++) {
+ state->cur_power = (state->cur_power + 1) % state->count_power;
+ state->power_history[state->cur_power] = power;
+ state->error_history[state->cur_power] = power_target - power;
+ }
+ for (i = 0; i < (CPU_TEMP_HISTORY_SIZE - 1); i++) {
+ state->cur_temp = (state->cur_temp + 1) % CPU_TEMP_HISTORY_SIZE;
+ state->temp_history[state->cur_temp] = temp;
+ }
+ state->first = 0;
+ }
+
+ /* Calculate the integral term normally based on the "power" values */
+ sum = 0;
+ integral = 0;
+ for (i = 0; i < state->count_power; i++)
+ integral += state->error_history[i];
+ integral *= CPU_PID_INTERVAL;
+ DBG(" integral: %08x\n", integral);
+
+ /* Calculate the adjusted input (sense value).
+ * G_r is 12.20
+ * integ is 16.16
+ * so the result is 28.36
+ *
+ * input target is mpu.ttarget, input max is mpu.tmax
+ */
+ integ_p = ((s64)state->mpu.pid_gr) * (s64)integral;
+ DBG(" integ_p: %d\n", (int)(integ_p >> 36));
+ sval = (state->mpu.tmax << 16) - ((integ_p >> 20) & 0xffffffff);
+ adj_in_target = (state->mpu.ttarget << 16);
+ if (adj_in_target > sval)
+ adj_in_target = sval;
+ DBG(" adj_in_target: %d.%03d, ttarget: %d\n", FIX32TOPRINT(adj_in_target),
+ state->mpu.ttarget);
+
+ /* Calculate the derivative term */
+ derivative = state->temp_history[state->cur_temp] -
+ state->temp_history[(state->cur_temp + CPU_TEMP_HISTORY_SIZE - 1)
+ % CPU_TEMP_HISTORY_SIZE];
+ derivative /= CPU_PID_INTERVAL;
+ deriv_p = ((s64)state->mpu.pid_gd) * (s64)derivative;
+ DBG(" deriv_p: %d\n", (int)(deriv_p >> 36));
+ sum += deriv_p;
+
+ /* Calculate the proportional term */
+ proportional = temp - adj_in_target;
+ prop_p = ((s64)state->mpu.pid_gp) * (s64)proportional;
+ DBG(" prop_p: %d\n", (int)(prop_p >> 36));
+ sum += prop_p;
+
+ /* Scale sum */
+ sum >>= 36;
+
+ DBG(" sum: %d\n", (int)sum);
+ state->rpm += (s32)sum;
+}
+
+static void do_monitor_cpu_combined(void)
+{
+ struct cpu_pid_state *state0 = &cpu_state[0];
+ struct cpu_pid_state *state1 = &cpu_state[1];
+ s32 temp0, power0, temp1, power1;
+ s32 temp_combi, power_combi;
+ int rc, intake, pump;
+
+ rc = do_read_one_cpu_values(state0, &temp0, &power0);
+ if (rc < 0) {
+ /* XXX What do we do now ? */
+ }
+ state1->overtemp = 0;
+ rc = do_read_one_cpu_values(state1, &temp1, &power1);
+ if (rc < 0) {
+ /* XXX What do we do now ? */
+ }
+ if (state1->overtemp)
+ state0->overtemp++;
+
+ temp_combi = max(temp0, temp1);
+ power_combi = max(power0, power1);
+
+ /* Check tmax, increment overtemp if we are there. At tmax+8, we go
+ * full blown immediately and try to trigger a shutdown
+ */
+ if (temp_combi >= ((state0->mpu.tmax + 8) << 16)) {
+ printk(KERN_WARNING "Warning ! Temperature way above maximum (%d) !\n",
+ temp_combi >> 16);
+ state0->overtemp = CPU_MAX_OVERTEMP;
+ } else if (temp_combi > (state0->mpu.tmax << 16))
+ state0->overtemp++;
+ else
+ state0->overtemp = 0;
+ if (state0->overtemp >= CPU_MAX_OVERTEMP)
+ critical_state = 1;
+ if (state0->overtemp > 0) {
+ state0->rpm = state0->mpu.rmaxn_exhaust_fan;
+ state0->intake_rpm = intake = state0->mpu.rmaxn_intake_fan;
+ pump = state0->pump_min;
+ goto do_set_fans;
+ }
+
+ /* Do the PID */
+ do_cpu_pid(state0, temp_combi, power_combi);
+
+ /* Range check */
+ state0->rpm = max(state0->rpm, (int)state0->mpu.rminn_exhaust_fan);
+ state0->rpm = min(state0->rpm, (int)state0->mpu.rmaxn_exhaust_fan);
+
+ /* Calculate intake fan speed */
+ intake = (state0->rpm * CPU_INTAKE_SCALE) >> 16;
+ intake = max(intake, (int)state0->mpu.rminn_intake_fan);
+ intake = min(intake, (int)state0->mpu.rmaxn_intake_fan);
+ state0->intake_rpm = intake;
+
+ /* Calculate pump speed */
+ pump = (state0->rpm * state0->pump_max) /
+ state0->mpu.rmaxn_exhaust_fan;
+ pump = min(pump, state0->pump_max);
+ pump = max(pump, state0->pump_min);
+
+ do_set_fans:
+ /* We copy values from state 0 to state 1 for /sysfs */
+ state1->rpm = state0->rpm;
+ state1->intake_rpm = state0->intake_rpm;
+
+ DBG("** CPU %d RPM: %d Ex, %d, Pump: %d, In, overtemp: %d\n",
+ state1->index, (int)state1->rpm, intake, pump, state1->overtemp);
+
+ /* We should check for errors, shouldn't we ? But then, what
+ * do we do once the error occurs ? For FCU notified fan
+ * failures (-EFAULT) we probably want to notify userland
+ * some way...
+ */
+ set_rpm_fan(CPUA_INTAKE_FAN_RPM_INDEX, intake);
+ set_rpm_fan(CPUA_EXHAUST_FAN_RPM_INDEX, state0->rpm);
+ set_rpm_fan(CPUB_INTAKE_FAN_RPM_INDEX, intake);
+ set_rpm_fan(CPUB_EXHAUST_FAN_RPM_INDEX, state0->rpm);
+
+ if (fcu_fans[CPUA_PUMP_RPM_INDEX].id != FCU_FAN_ABSENT_ID)
+ set_rpm_fan(CPUA_PUMP_RPM_INDEX, pump);
+ if (fcu_fans[CPUB_PUMP_RPM_INDEX].id != FCU_FAN_ABSENT_ID)
+ set_rpm_fan(CPUB_PUMP_RPM_INDEX, pump);
+}
+
+static void do_monitor_cpu_split(struct cpu_pid_state *state)
+{
+ s32 temp, power;
+ int rc, intake;
+
+ /* Read current fan status */
+ rc = do_read_one_cpu_values(state, &temp, &power);
+ if (rc < 0) {
+ /* XXX What do we do now ? */
+ }
+
+ /* Check tmax, increment overtemp if we are there. At tmax+8, we go
+ * full blown immediately and try to trigger a shutdown
+ */
+ if (temp >= ((state->mpu.tmax + 8) << 16)) {
+ printk(KERN_WARNING "Warning ! CPU %d temperature way above maximum"
+ " (%d) !\n",
+ state->index, temp >> 16);
+ state->overtemp = CPU_MAX_OVERTEMP;
+ } else if (temp > (state->mpu.tmax << 16))
+ state->overtemp++;
+ else
+ state->overtemp = 0;
+ if (state->overtemp >= CPU_MAX_OVERTEMP)
+ critical_state = 1;
+ if (state->overtemp > 0) {
+ state->rpm = state->mpu.rmaxn_exhaust_fan;
+ state->intake_rpm = intake = state->mpu.rmaxn_intake_fan;
+ goto do_set_fans;
+ }
+
+ /* Do the PID */
+ do_cpu_pid(state, temp, power);
+
+ /* Range check */
+ state->rpm = max(state->rpm, (int)state->mpu.rminn_exhaust_fan);
+ state->rpm = min(state->rpm, (int)state->mpu.rmaxn_exhaust_fan);
+
+ /* Calculate intake fan */
+ intake = (state->rpm * CPU_INTAKE_SCALE) >> 16;
+ intake = max(intake, (int)state->mpu.rminn_intake_fan);
+ intake = min(intake, (int)state->mpu.rmaxn_intake_fan);
+ state->intake_rpm = intake;
+
+ do_set_fans:
+ DBG("** CPU %d RPM: %d Ex, %d In, overtemp: %d\n",
+ state->index, (int)state->rpm, intake, state->overtemp);
+
+ /* We should check for errors, shouldn't we ? But then, what
+ * do we do once the error occurs ? For FCU notified fan
+ * failures (-EFAULT) we probably want to notify userland
+ * some way...
+ */
+ if (state->index == 0) {
+ set_rpm_fan(CPUA_INTAKE_FAN_RPM_INDEX, intake);
+ set_rpm_fan(CPUA_EXHAUST_FAN_RPM_INDEX, state->rpm);
+ } else {
+ set_rpm_fan(CPUB_INTAKE_FAN_RPM_INDEX, intake);
+ set_rpm_fan(CPUB_EXHAUST_FAN_RPM_INDEX, state->rpm);
+ }
+}
+
+static void do_monitor_cpu_rack(struct cpu_pid_state *state)
+{
+ s32 temp, power, fan_min;
+ int rc;
+
+ /* Read current fan status */
+ rc = do_read_one_cpu_values(state, &temp, &power);
+ if (rc < 0) {
+ /* XXX What do we do now ? */
+ }
+
+ /* Check tmax, increment overtemp if we are there. At tmax+8, we go
+ * full blown immediately and try to trigger a shutdown
+ */
+ if (temp >= ((state->mpu.tmax + 8) << 16)) {
+ printk(KERN_WARNING "Warning ! CPU %d temperature way above maximum"
+ " (%d) !\n",
+ state->index, temp >> 16);
+ state->overtemp = CPU_MAX_OVERTEMP;
+ } else if (temp > (state->mpu.tmax << 16))
+ state->overtemp++;
+ else
+ state->overtemp = 0;
+ if (state->overtemp >= CPU_MAX_OVERTEMP)
+ critical_state = 1;
+ if (state->overtemp > 0) {
+ state->rpm = state->intake_rpm = state->mpu.rmaxn_intake_fan;
+ goto do_set_fans;
+ }
+
+ /* Do the PID */
+ do_cpu_pid(state, temp, power);
+
+ /* Check clamp from dimms */
+ fan_min = dimm_output_clamp;
+ fan_min = max(fan_min, (int)state->mpu.rminn_intake_fan);
+
+ state->rpm = max(state->rpm, (int)fan_min);
+ state->rpm = min(state->rpm, (int)state->mpu.rmaxn_intake_fan);
+ state->intake_rpm = state->rpm;
+
+ do_set_fans:
+ DBG("** CPU %d RPM: %d overtemp: %d\n",
+ state->index, (int)state->rpm, state->overtemp);
+
+ /* We should check for errors, shouldn't we ? But then, what
+ * do we do once the error occurs ? For FCU notified fan
+ * failures (-EFAULT) we probably want to notify userland
+ * some way...
+ */
+ if (state->index == 0) {
+ set_rpm_fan(CPU_A1_FAN_RPM_INDEX, state->rpm);
+ set_rpm_fan(CPU_A2_FAN_RPM_INDEX, state->rpm);
+ set_rpm_fan(CPU_A3_FAN_RPM_INDEX, state->rpm);
+ } else {
+ set_rpm_fan(CPU_B1_FAN_RPM_INDEX, state->rpm);
+ set_rpm_fan(CPU_B2_FAN_RPM_INDEX, state->rpm);
+ set_rpm_fan(CPU_B3_FAN_RPM_INDEX, state->rpm);
+ }
+}
+
+/*
+ * Initialize the state structure for one CPU control loop
+ */
+static int init_cpu_state(struct cpu_pid_state *state, int index)
+{
+ state->index = index;
+ state->first = 1;
+ state->rpm = (cpu_pid_type == CPU_PID_TYPE_RACKMAC) ? 4000 : 1000;
+ state->overtemp = 0;
+ state->adc_config = 0x00;
+
+
+ if (index == 0)
+ state->monitor = attach_i2c_chip(SUPPLY_MONITOR_ID, "CPU0_monitor");
+ else if (index == 1)
+ state->monitor = attach_i2c_chip(SUPPLY_MONITORB_ID, "CPU1_monitor");
+ if (state->monitor == NULL)
+ goto fail;
+
+ if (read_eeprom(index, &state->mpu))
+ goto fail;
+
+ state->count_power = state->mpu.tguardband;
+ if (state->count_power > CPU_POWER_HISTORY_SIZE) {
+ printk(KERN_WARNING "Warning ! too many power history slots\n");
+ state->count_power = CPU_POWER_HISTORY_SIZE;
+ }
+ DBG("CPU %d Using %d power history entries\n", index, state->count_power);
+
+ if (index == 0) {
+ device_create_file(&of_dev->dev, &dev_attr_cpu0_temperature);
+ device_create_file(&of_dev->dev, &dev_attr_cpu0_voltage);
+ device_create_file(&of_dev->dev, &dev_attr_cpu0_current);
+ device_create_file(&of_dev->dev, &dev_attr_cpu0_exhaust_fan_rpm);
+ device_create_file(&of_dev->dev, &dev_attr_cpu0_intake_fan_rpm);
+ } else {
+ device_create_file(&of_dev->dev, &dev_attr_cpu1_temperature);
+ device_create_file(&of_dev->dev, &dev_attr_cpu1_voltage);
+ device_create_file(&of_dev->dev, &dev_attr_cpu1_current);
+ device_create_file(&of_dev->dev, &dev_attr_cpu1_exhaust_fan_rpm);
+ device_create_file(&of_dev->dev, &dev_attr_cpu1_intake_fan_rpm);
+ }
+
+ return 0;
+ fail:
+ if (state->monitor)
+ detach_i2c_chip(state->monitor);
+ state->monitor = NULL;
+
+ return -ENODEV;
+}
+
+/*
+ * Dispose of the state data for one CPU control loop
+ */
+static void dispose_cpu_state(struct cpu_pid_state *state)
+{
+ if (state->monitor == NULL)
+ return;
+
+ if (state->index == 0) {
+ device_remove_file(&of_dev->dev, &dev_attr_cpu0_temperature);
+ device_remove_file(&of_dev->dev, &dev_attr_cpu0_voltage);
+ device_remove_file(&of_dev->dev, &dev_attr_cpu0_current);
+ device_remove_file(&of_dev->dev, &dev_attr_cpu0_exhaust_fan_rpm);
+ device_remove_file(&of_dev->dev, &dev_attr_cpu0_intake_fan_rpm);
+ } else {
+ device_remove_file(&of_dev->dev, &dev_attr_cpu1_temperature);
+ device_remove_file(&of_dev->dev, &dev_attr_cpu1_voltage);
+ device_remove_file(&of_dev->dev, &dev_attr_cpu1_current);
+ device_remove_file(&of_dev->dev, &dev_attr_cpu1_exhaust_fan_rpm);
+ device_remove_file(&of_dev->dev, &dev_attr_cpu1_intake_fan_rpm);
+ }
+
+ detach_i2c_chip(state->monitor);
+ state->monitor = NULL;
+}
+
+/*
+ * Motherboard backside & U3 heatsink fan control loop
+ */
+static void do_monitor_backside(struct backside_pid_state *state)
+{
+ s32 temp, integral, derivative, fan_min;
+ s64 integ_p, deriv_p, prop_p, sum;
+ int i, rc;
+
+ if (--state->ticks != 0)
+ return;
+ state->ticks = backside_params.interval;
+
+ DBG("backside:\n");
+
+ /* Check fan status */
+ rc = get_pwm_fan(BACKSIDE_FAN_PWM_INDEX);
+ if (rc < 0) {
+ printk(KERN_WARNING "Error %d reading backside fan !\n", rc);
+ /* XXX What do we do now ? */
+ } else
+ state->pwm = rc;
+ DBG(" current pwm: %d\n", state->pwm);
+
+ /* Get some sensor readings */
+ temp = i2c_smbus_read_byte_data(state->monitor, MAX6690_EXT_TEMP) << 16;
+ state->last_temp = temp;
+ DBG(" temp: %d.%03d, target: %d.%03d\n", FIX32TOPRINT(temp),
+ FIX32TOPRINT(backside_params.input_target));
+
+ /* Store temperature and error in history array */
+ state->cur_sample = (state->cur_sample + 1) % BACKSIDE_PID_HISTORY_SIZE;
+ state->sample_history[state->cur_sample] = temp;
+ state->error_history[state->cur_sample] = temp - backside_params.input_target;
+
+ /* If first loop, fill the history table */
+ if (state->first) {
+ for (i = 0; i < (BACKSIDE_PID_HISTORY_SIZE - 1); i++) {
+ state->cur_sample = (state->cur_sample + 1) %
+ BACKSIDE_PID_HISTORY_SIZE;
+ state->sample_history[state->cur_sample] = temp;
+ state->error_history[state->cur_sample] =
+ temp - backside_params.input_target;
+ }
+ state->first = 0;
+ }
+
+ /* Calculate the integral term */
+ sum = 0;
+ integral = 0;
+ for (i = 0; i < BACKSIDE_PID_HISTORY_SIZE; i++)
+ integral += state->error_history[i];
+ integral *= backside_params.interval;
+ DBG(" integral: %08x\n", integral);
+ integ_p = ((s64)backside_params.G_r) * (s64)integral;
+ DBG(" integ_p: %d\n", (int)(integ_p >> 36));
+ sum += integ_p;
+
+ /* Calculate the derivative term */
+ derivative = state->error_history[state->cur_sample] -
+ state->error_history[(state->cur_sample + BACKSIDE_PID_HISTORY_SIZE - 1)
+ % BACKSIDE_PID_HISTORY_SIZE];
+ derivative /= backside_params.interval;
+ deriv_p = ((s64)backside_params.G_d) * (s64)derivative;
+ DBG(" deriv_p: %d\n", (int)(deriv_p >> 36));
+ sum += deriv_p;
+
+ /* Calculate the proportional term */
+ prop_p = ((s64)backside_params.G_p) * (s64)(state->error_history[state->cur_sample]);
+ DBG(" prop_p: %d\n", (int)(prop_p >> 36));
+ sum += prop_p;
+
+ /* Scale sum */
+ sum >>= 36;
+
+ DBG(" sum: %d\n", (int)sum);
+ if (backside_params.additive)
+ state->pwm += (s32)sum;
+ else
+ state->pwm = sum;
+
+ /* Check for clamp */
+ fan_min = (dimm_output_clamp * 100) / 14000;
+ fan_min = max(fan_min, backside_params.output_min);
+
+ state->pwm = max(state->pwm, fan_min);
+ state->pwm = min(state->pwm, backside_params.output_max);
+
+ DBG("** BACKSIDE PWM: %d\n", (int)state->pwm);
+ set_pwm_fan(BACKSIDE_FAN_PWM_INDEX, state->pwm);
+}
+
+/*
+ * Initialize the state structure for the backside fan control loop
+ */
+static int init_backside_state(struct backside_pid_state *state)
+{
+ struct device_node *u3;
+ int u3h = 1; /* conservative by default */
+
+ /*
+ * There are different PID params for machines with U3 and machines
+ * with U3H, pick the right ones now
+ */
+ u3 = of_find_node_by_path("/u3@0,f8000000");
+ if (u3 != NULL) {
+ u32 *vers = (u32 *)get_property(u3, "device-rev", NULL);
+ if (vers)
+ if (((*vers) & 0x3f) < 0x34)
+ u3h = 0;
+ of_node_put(u3);
+ }
+
+ if (rackmac) {
+ backside_params.G_d = BACKSIDE_PID_RACK_G_d;
+ backside_params.input_target = BACKSIDE_PID_RACK_INPUT_TARGET;
+ backside_params.output_min = BACKSIDE_PID_U3H_OUTPUT_MIN;
+ backside_params.interval = BACKSIDE_PID_RACK_INTERVAL;
+ backside_params.G_p = BACKSIDE_PID_RACK_G_p;
+ backside_params.G_r = BACKSIDE_PID_G_r;
+ backside_params.output_max = BACKSIDE_PID_OUTPUT_MAX;
+ backside_params.additive = 0;
+ } else if (u3h) {
+ backside_params.G_d = BACKSIDE_PID_U3H_G_d;
+ backside_params.input_target = BACKSIDE_PID_U3H_INPUT_TARGET;
+ backside_params.output_min = BACKSIDE_PID_U3H_OUTPUT_MIN;
+ backside_params.interval = BACKSIDE_PID_INTERVAL;
+ backside_params.G_p = BACKSIDE_PID_G_p;
+ backside_params.G_r = BACKSIDE_PID_G_r;
+ backside_params.output_max = BACKSIDE_PID_OUTPUT_MAX;
+ backside_params.additive = 1;
+ } else {
+ backside_params.G_d = BACKSIDE_PID_U3_G_d;
+ backside_params.input_target = BACKSIDE_PID_U3_INPUT_TARGET;
+ backside_params.output_min = BACKSIDE_PID_U3_OUTPUT_MIN;
+ backside_params.interval = BACKSIDE_PID_INTERVAL;
+ backside_params.G_p = BACKSIDE_PID_G_p;
+ backside_params.G_r = BACKSIDE_PID_G_r;
+ backside_params.output_max = BACKSIDE_PID_OUTPUT_MAX;
+ backside_params.additive = 1;
+ }
+
+ state->ticks = 1;
+ state->first = 1;
+ state->pwm = 50;
+
+ state->monitor = attach_i2c_chip(BACKSIDE_MAX_ID, "backside_temp");
+ if (state->monitor == NULL)
+ return -ENODEV;
+
+ device_create_file(&of_dev->dev, &dev_attr_backside_temperature);
+ device_create_file(&of_dev->dev, &dev_attr_backside_fan_pwm);
+
+ return 0;
+}
+
+/*
+ * Dispose of the state data for the backside control loop
+ */
+static void dispose_backside_state(struct backside_pid_state *state)
+{
+ if (state->monitor == NULL)
+ return;
+
+ device_remove_file(&of_dev->dev, &dev_attr_backside_temperature);
+ device_remove_file(&of_dev->dev, &dev_attr_backside_fan_pwm);
+
+ detach_i2c_chip(state->monitor);
+ state->monitor = NULL;
+}
+
+/*
+ * Drives bay fan control loop
+ */
+static void do_monitor_drives(struct drives_pid_state *state)
+{
+ s32 temp, integral, derivative;
+ s64 integ_p, deriv_p, prop_p, sum;
+ int i, rc;
+
+ if (--state->ticks != 0)
+ return;
+ state->ticks = DRIVES_PID_INTERVAL;
+
+ DBG("drives:\n");
+
+ /* Check fan status */
+ rc = get_rpm_fan(DRIVES_FAN_RPM_INDEX, !RPM_PID_USE_ACTUAL_SPEED);
+ if (rc < 0) {
+ printk(KERN_WARNING "Error %d reading drives fan !\n", rc);
+ /* XXX What do we do now ? */
+ } else
+ state->rpm = rc;
+ DBG(" current rpm: %d\n", state->rpm);
+
+ /* Get some sensor readings */
+ temp = le16_to_cpu(i2c_smbus_read_word_data(state->monitor, DS1775_TEMP)) << 8;
+ state->last_temp = temp;
+ DBG(" temp: %d.%03d, target: %d.%03d\n", FIX32TOPRINT(temp),
+ FIX32TOPRINT(DRIVES_PID_INPUT_TARGET));
+
+ /* Store temperature and error in history array */
+ state->cur_sample = (state->cur_sample + 1) % DRIVES_PID_HISTORY_SIZE;
+ state->sample_history[state->cur_sample] = temp;
+ state->error_history[state->cur_sample] = temp - DRIVES_PID_INPUT_TARGET;
+
+ /* If first loop, fill the history table */
+ if (state->first) {
+ for (i = 0; i < (DRIVES_PID_HISTORY_SIZE - 1); i++) {
+ state->cur_sample = (state->cur_sample + 1) %
+ DRIVES_PID_HISTORY_SIZE;
+ state->sample_history[state->cur_sample] = temp;
+ state->error_history[state->cur_sample] =
+ temp - DRIVES_PID_INPUT_TARGET;
+ }
+ state->first = 0;
+ }
+
+ /* Calculate the integral term */
+ sum = 0;
+ integral = 0;
+ for (i = 0; i < DRIVES_PID_HISTORY_SIZE; i++)
+ integral += state->error_history[i];
+ integral *= DRIVES_PID_INTERVAL;
+ DBG(" integral: %08x\n", integral);
+ integ_p = ((s64)DRIVES_PID_G_r) * (s64)integral;
+ DBG(" integ_p: %d\n", (int)(integ_p >> 36));
+ sum += integ_p;
+
+ /* Calculate the derivative term */
+ derivative = state->error_history[state->cur_sample] -
+ state->error_history[(state->cur_sample + DRIVES_PID_HISTORY_SIZE - 1)
+ % DRIVES_PID_HISTORY_SIZE];
+ derivative /= DRIVES_PID_INTERVAL;
+ deriv_p = ((s64)DRIVES_PID_G_d) * (s64)derivative;
+ DBG(" deriv_p: %d\n", (int)(deriv_p >> 36));
+ sum += deriv_p;
+
+ /* Calculate the proportional term */
+ prop_p = ((s64)DRIVES_PID_G_p) * (s64)(state->error_history[state->cur_sample]);
+ DBG(" prop_p: %d\n", (int)(prop_p >> 36));
+ sum += prop_p;
+
+ /* Scale sum */
+ sum >>= 36;
+
+ DBG(" sum: %d\n", (int)sum);
+ state->rpm += (s32)sum;
+
+ state->rpm = max(state->rpm, DRIVES_PID_OUTPUT_MIN);
+ state->rpm = min(state->rpm, DRIVES_PID_OUTPUT_MAX);
+
+ DBG("** DRIVES RPM: %d\n", (int)state->rpm);
+ set_rpm_fan(DRIVES_FAN_RPM_INDEX, state->rpm);
+}
+
+/*
+ * Initialize the state structure for the drives bay fan control loop
+ */
+static int init_drives_state(struct drives_pid_state *state)
+{
+ state->ticks = 1;
+ state->first = 1;
+ state->rpm = 1000;
+
+ state->monitor = attach_i2c_chip(DRIVES_DALLAS_ID, "drives_temp");
+ if (state->monitor == NULL)
+ return -ENODEV;
+
+ device_create_file(&of_dev->dev, &dev_attr_drives_temperature);
+ device_create_file(&of_dev->dev, &dev_attr_drives_fan_rpm);
+
+ return 0;
+}
+
+/*
+ * Dispose of the state data for the drives control loop
+ */
+static void dispose_drives_state(struct drives_pid_state *state)
+{
+ if (state->monitor == NULL)
+ return;
+
+ device_remove_file(&of_dev->dev, &dev_attr_drives_temperature);
+ device_remove_file(&of_dev->dev, &dev_attr_drives_fan_rpm);
+
+ detach_i2c_chip(state->monitor);
+ state->monitor = NULL;
+}
+
+/*
+ * DIMMs temp control loop
+ */
+static void do_monitor_dimms(struct dimm_pid_state *state)
+{
+ s32 temp, integral, derivative, fan_min;
+ s64 integ_p, deriv_p, prop_p, sum;
+ int i;
+
+ if (--state->ticks != 0)
+ return;
+ state->ticks = DIMM_PID_INTERVAL;
+
+ DBG("DIMM:\n");
+
+ DBG(" current value: %d\n", state->output);
+
+ temp = read_lm87_reg(state->monitor, LM87_INT_TEMP);
+ if (temp < 0)
+ return;
+ temp <<= 16;
+ state->last_temp = temp;
+ DBG(" temp: %d.%03d, target: %d.%03d\n", FIX32TOPRINT(temp),
+ FIX32TOPRINT(DIMM_PID_INPUT_TARGET));
+
+ /* Store temperature and error in history array */
+ state->cur_sample = (state->cur_sample + 1) % DIMM_PID_HISTORY_SIZE;
+ state->sample_history[state->cur_sample] = temp;
+ state->error_history[state->cur_sample] = temp - DIMM_PID_INPUT_TARGET;
+
+ /* If first loop, fill the history table */
+ if (state->first) {
+ for (i = 0; i < (DIMM_PID_HISTORY_SIZE - 1); i++) {
+ state->cur_sample = (state->cur_sample + 1) %
+ DIMM_PID_HISTORY_SIZE;
+ state->sample_history[state->cur_sample] = temp;
+ state->error_history[state->cur_sample] =
+ temp - DIMM_PID_INPUT_TARGET;
+ }
+ state->first = 0;
+ }
+
+ /* Calculate the integral term */
+ sum = 0;
+ integral = 0;
+ for (i = 0; i < DIMM_PID_HISTORY_SIZE; i++)
+ integral += state->error_history[i];
+ integral *= DIMM_PID_INTERVAL;
+ DBG(" integral: %08x\n", integral);
+ integ_p = ((s64)DIMM_PID_G_r) * (s64)integral;
+ DBG(" integ_p: %d\n", (int)(integ_p >> 36));
+ sum += integ_p;
+
+ /* Calculate the derivative term */
+ derivative = state->error_history[state->cur_sample] -
+ state->error_history[(state->cur_sample + DIMM_PID_HISTORY_SIZE - 1)
+ % DIMM_PID_HISTORY_SIZE];
+ derivative /= DIMM_PID_INTERVAL;
+ deriv_p = ((s64)DIMM_PID_G_d) * (s64)derivative;
+ DBG(" deriv_p: %d\n", (int)(deriv_p >> 36));
+ sum += deriv_p;
+
+ /* Calculate the proportional term */
+ prop_p = ((s64)DIMM_PID_G_p) * (s64)(state->error_history[state->cur_sample]);
+ DBG(" prop_p: %d\n", (int)(prop_p >> 36));
+ sum += prop_p;
+
+ /* Scale sum */
+ sum >>= 36;
+
+ DBG(" sum: %d\n", (int)sum);
+ state->output = (s32)sum;
+ state->output = max(state->output, DIMM_PID_OUTPUT_MIN);
+ state->output = min(state->output, DIMM_PID_OUTPUT_MAX);
+ dimm_output_clamp = state->output;
+
+ DBG("** DIMM clamp value: %d\n", (int)state->output);
+
+ /* Backside PID is only every 5 seconds, force backside fan clamping now */
+ fan_min = (dimm_output_clamp * 100) / 14000;
+ fan_min = max(fan_min, backside_params.output_min);
+ if (backside_state.pwm < fan_min) {
+ backside_state.pwm = fan_min;
+ DBG(" -> applying clamp to backside fan now: %d !\n", fan_min);
+ set_pwm_fan(BACKSIDE_FAN_PWM_INDEX, fan_min);
+ }
+}
+
+/*
+ * Initialize the state structure for the DIMM temp control loop
+ */
+static int init_dimms_state(struct dimm_pid_state *state)
+{
+ state->ticks = 1;
+ state->first = 1;
+ state->output = 4000;
+
+ state->monitor = attach_i2c_chip(XSERVE_DIMMS_LM87, "dimms_temp");
+ if (state->monitor == NULL)
+ return -ENODEV;
+
+ device_create_file(&of_dev->dev, &dev_attr_dimms_temperature);
+
+ return 0;
+}
+
+/*
+ * Dispose of the state data for the drives control loop
+ */
+static void dispose_dimms_state(struct dimm_pid_state *state)
+{
+ if (state->monitor == NULL)
+ return;
+
+ device_remove_file(&of_dev->dev, &dev_attr_dimms_temperature);
+
+ detach_i2c_chip(state->monitor);
+ state->monitor = NULL;
+}
+
+static int call_critical_overtemp(void)
+{
+ char *argv[] = { critical_overtemp_path, NULL };
+ static char *envp[] = { "HOME=/",
+ "TERM=linux",
+ "PATH=/sbin:/usr/sbin:/bin:/usr/bin",
+ NULL };
+
+ return call_usermodehelper(critical_overtemp_path, argv, envp, 0);
+}
+
+
+/*
+ * Here's the kernel thread that calls the various control loops
+ */
+static int main_control_loop(void *x)
+{
+ daemonize("kfand");
+
+ DBG("main_control_loop started\n");
+
+ down(&driver_lock);
+
+ if (start_fcu() < 0) {
+ printk(KERN_ERR "kfand: failed to start FCU\n");
+ up(&driver_lock);
+ goto out;
+ }
+
+ /* Set the PCI fan once for now */
+ set_pwm_fan(SLOTS_FAN_PWM_INDEX, SLOTS_FAN_DEFAULT_PWM);
+
+ /* Initialize ADCs */
+ initialize_adc(&cpu_state[0]);
+ if (cpu_state[1].monitor != NULL)
+ initialize_adc(&cpu_state[1]);
+
+ up(&driver_lock);
+
+ while (state == state_attached) {
+ unsigned long elapsed, start;
+
+ start = jiffies;
+
+ down(&driver_lock);
+
+ /* First, we always calculate the new DIMMs state on an Xserve */
+ if (rackmac)
+ do_monitor_dimms(&dimms_state);
+
+ /* Then, the CPUs */
+ if (cpu_pid_type == CPU_PID_TYPE_COMBINED)
+ do_monitor_cpu_combined();
+ else if (cpu_pid_type == CPU_PID_TYPE_RACKMAC) {
+ do_monitor_cpu_rack(&cpu_state[0]);
+ if (cpu_state[1].monitor != NULL)
+ do_monitor_cpu_rack(&cpu_state[1]);
+ // better deal with UP
+ } else {
+ do_monitor_cpu_split(&cpu_state[0]);
+ if (cpu_state[1].monitor != NULL)
+ do_monitor_cpu_split(&cpu_state[1]);
+ // better deal with UP
+ }
+ /* Then, the rest */
+ do_monitor_backside(&backside_state);
+ if (!rackmac)
+ do_monitor_drives(&drives_state);
+ up(&driver_lock);
+
+ if (critical_state == 1) {
+ printk(KERN_WARNING "Temperature control detected a critical condition\n");
+ printk(KERN_WARNING "Attempting to shut down...\n");
+ if (call_critical_overtemp()) {
+ printk(KERN_WARNING "Can't call %s, power off now!\n",
+ critical_overtemp_path);
+ machine_power_off();
+ }
+ }
+ if (critical_state > 0)
+ critical_state++;
+ if (critical_state > MAX_CRITICAL_STATE) {
+ printk(KERN_WARNING "Shutdown timed out, power off now !\n");
+ machine_power_off();
+ }
+
+ // FIXME: Deal with signals
+ set_current_state(TASK_INTERRUPTIBLE);
+ elapsed = jiffies - start;
+ if (elapsed < HZ)
+ schedule_timeout(HZ - elapsed);
+ }
+
+ out:
+ DBG("main_control_loop ended\n");
+
+ ctrl_task = 0;
+ complete_and_exit(&ctrl_complete, 0);
+}
+
+/*
+ * Dispose the control loops when tearing down
+ */
+static void dispose_control_loops(void)
+{
+ dispose_cpu_state(&cpu_state[0]);
+ dispose_cpu_state(&cpu_state[1]);
+ dispose_backside_state(&backside_state);
+ dispose_drives_state(&drives_state);
+ dispose_dimms_state(&dimms_state);
+}
+
+/*
+ * Create the control loops. U3-0 i2c bus is up, so we can now
+ * get to the various sensors
+ */
+static int create_control_loops(void)
+{
+ struct device_node *np;
+
+ /* Count CPUs from the device-tree, we don't care how many are
+ * actually used by Linux
+ */
+ cpu_count = 0;
+ for (np = NULL; NULL != (np = of_find_node_by_type(np, "cpu"));)
+ cpu_count++;
+
+ DBG("counted %d CPUs in the device-tree\n", cpu_count);
+
+ /* Decide the type of PID algorithm to use based on the presence of
+ * the pumps, though that may not be the best way, that is good enough
+ * for now
+ */
+ if (rackmac)
+ cpu_pid_type = CPU_PID_TYPE_RACKMAC;
+ else if (machine_is_compatible("PowerMac7,3")
+ && (cpu_count > 1)
+ && fcu_fans[CPUA_PUMP_RPM_INDEX].id != FCU_FAN_ABSENT_ID
+ && fcu_fans[CPUB_PUMP_RPM_INDEX].id != FCU_FAN_ABSENT_ID) {
+ printk(KERN_INFO "Liquid cooling pumps detected, using new algorithm !\n");
+ cpu_pid_type = CPU_PID_TYPE_COMBINED;
+ } else
+ cpu_pid_type = CPU_PID_TYPE_SPLIT;
+
+ /* Create control loops for everything. If any fail, everything
+ * fails
+ */
+ if (init_cpu_state(&cpu_state[0], 0))
+ goto fail;
+ if (cpu_pid_type == CPU_PID_TYPE_COMBINED)
+ fetch_cpu_pumps_minmax();
+
+ if (cpu_count > 1 && init_cpu_state(&cpu_state[1], 1))
+ goto fail;
+ if (init_backside_state(&backside_state))
+ goto fail;
+ if (rackmac && init_dimms_state(&dimms_state))
+ goto fail;
+ if (!rackmac && init_drives_state(&drives_state))
+ goto fail;
+
+ DBG("all control loops up !\n");
+
+ return 0;
+
+ fail:
+ DBG("failure creating control loops, disposing\n");
+
+ dispose_control_loops();
+
+ return -ENODEV;
+}
+
+/*
+ * Start the control loops after everything is up, that is create
+ * the thread that will make them run
+ */
+static void start_control_loops(void)
+{
+ init_completion(&ctrl_complete);
+
+ ctrl_task = kernel_thread(main_control_loop, NULL, SIGCHLD | CLONE_KERNEL);
+}
+
+/*
+ * Stop the control loops when tearing down
+ */
+static void stop_control_loops(void)
+{
+ if (ctrl_task != 0)
+ wait_for_completion(&ctrl_complete);
+}
+
+/*
+ * Attach to the i2c FCU after detecting U3-1 bus
+ */
+static int attach_fcu(void)
+{
+ fcu = attach_i2c_chip(FAN_CTRLER_ID, "fcu");
+ if (fcu == NULL)
+ return -ENODEV;
+
+ DBG("FCU attached\n");
+
+ return 0;
+}
+
+/*
+ * Detach from the i2c FCU when tearing down
+ */
+static void detach_fcu(void)
+{
+ if (fcu)
+ detach_i2c_chip(fcu);
+ fcu = NULL;
+}
+
+/*
+ * Attach to the i2c controller. We probe the various chips based
+ * on the device-tree nodes and build everything for the driver to
+ * run, we then kick the driver monitoring thread
+ */
+static int therm_pm72_attach(struct i2c_adapter *adapter)
+{
+ down(&driver_lock);
+
+ /* Check state */
+ if (state == state_detached)
+ state = state_attaching;
+ if (state != state_attaching) {
+ up(&driver_lock);
+ return 0;
+ }
+
+ /* Check if we are looking for one of these */
+ if (u3_0 == NULL && !strcmp(adapter->name, "u3 0")) {
+ u3_0 = adapter;
+ DBG("found U3-0\n");
+ if (k2 || !rackmac)
+ if (create_control_loops())
+ u3_0 = NULL;
+ } else if (u3_1 == NULL && !strcmp(adapter->name, "u3 1")) {
+ u3_1 = adapter;
+ DBG("found U3-1, attaching FCU\n");
+ if (attach_fcu())
+ u3_1 = NULL;
+ } else if (k2 == NULL && !strcmp(adapter->name, "mac-io 0")) {
+ k2 = adapter;
+ DBG("Found K2\n");
+ if (u3_0 && rackmac)
+ if (create_control_loops())
+ k2 = NULL;
+ }
+ /* We got all we need, start control loops */
+ if (u3_0 != NULL && u3_1 != NULL && (k2 || !rackmac)) {
+ DBG("everything up, starting control loops\n");
+ state = state_attached;
+ start_control_loops();
+ }
+ up(&driver_lock);
+
+ return 0;
+}
+
+/*
+ * Called on every adapter when the driver or the i2c controller
+ * is going away.
+ */
+static int therm_pm72_detach(struct i2c_adapter *adapter)
+{
+ down(&driver_lock);
+
+ if (state != state_detached)
+ state = state_detaching;
+
+ /* Stop control loops if any */
+ DBG("stopping control loops\n");
+ up(&driver_lock);
+ stop_control_loops();
+ down(&driver_lock);
+
+ if (u3_0 != NULL && !strcmp(adapter->name, "u3 0")) {
+ DBG("lost U3-0, disposing control loops\n");
+ dispose_control_loops();
+ u3_0 = NULL;
+ }
+
+ if (u3_1 != NULL && !strcmp(adapter->name, "u3 1")) {
+ DBG("lost U3-1, detaching FCU\n");
+ detach_fcu();
+ u3_1 = NULL;
+ }
+ if (u3_0 == NULL && u3_1 == NULL)
+ state = state_detached;
+
+ up(&driver_lock);
+
+ return 0;
+}
+
+static int fan_check_loc_match(const char *loc, int fan)
+{
+ char tmp[64];
+ char *c, *e;
+
+ strlcpy(tmp, fcu_fans[fan].loc, 64);
+
+ c = tmp;
+ for (;;) {
+ e = strchr(c, ',');
+ if (e)
+ *e = 0;
+ if (strcmp(loc, c) == 0)
+ return 1;
+ if (e == NULL)
+ break;
+ c = e + 1;
+ }
+ return 0;
+}
+
+static void fcu_lookup_fans(struct device_node *fcu_node)
+{
+ struct device_node *np = NULL;
+ int i;
+
+ /* The table is filled by default with values that are suitable
+ * for the old machines without device-tree informations. We scan
+ * the device-tree and override those values with whatever is
+ * there
+ */
+
+ DBG("Looking up FCU controls in device-tree...\n");
+
+ while ((np = of_get_next_child(fcu_node, np)) != NULL) {
+ int type = -1;
+ char *loc;
+ u32 *reg;
+
+ DBG(" control: %s, type: %s\n", np->name, np->type);
+
+ /* Detect control type */
+ if (!strcmp(np->type, "fan-rpm-control") ||
+ !strcmp(np->type, "fan-rpm"))
+ type = FCU_FAN_RPM;
+ if (!strcmp(np->type, "fan-pwm-control") ||
+ !strcmp(np->type, "fan-pwm"))
+ type = FCU_FAN_PWM;
+ /* Only care about fans for now */
+ if (type == -1)
+ continue;
+
+ /* Lookup for a matching location */
+ loc = (char *)get_property(np, "location", NULL);
+ reg = (u32 *)get_property(np, "reg", NULL);
+ if (loc == NULL || reg == NULL)
+ continue;
+ DBG(" matching location: %s, reg: 0x%08x\n", loc, *reg);
+
+ for (i = 0; i < FCU_FAN_COUNT; i++) {
+ int fan_id;
+
+ if (!fan_check_loc_match(loc, i))
+ continue;
+ DBG(" location match, index: %d\n", i);
+ fcu_fans[i].id = FCU_FAN_ABSENT_ID;
+ if (type != fcu_fans[i].type) {
+ printk(KERN_WARNING "therm_pm72: Fan type mismatch "
+ "in device-tree for %s\n", np->full_name);
+ break;
+ }
+ if (type == FCU_FAN_RPM)
+ fan_id = ((*reg) - 0x10) / 2;
+ else
+ fan_id = ((*reg) - 0x30) / 2;
+ if (fan_id > 7) {
+ printk(KERN_WARNING "therm_pm72: Can't parse "
+ "fan ID in device-tree for %s\n", np->full_name);
+ break;
+ }
+ DBG(" fan id -> %d, type -> %d\n", fan_id, type);
+ fcu_fans[i].id = fan_id;
+ }
+ }
+
+ /* Now dump the array */
+ printk(KERN_INFO "Detected fan controls:\n");
+ for (i = 0; i < FCU_FAN_COUNT; i++) {
+ if (fcu_fans[i].id == FCU_FAN_ABSENT_ID)
+ continue;
+ printk(KERN_INFO " %d: %s fan, id %d, location: %s\n", i,
+ fcu_fans[i].type == FCU_FAN_RPM ? "RPM" : "PWM",
+ fcu_fans[i].id, fcu_fans[i].loc);
+ }
+}
+
+static int fcu_of_probe(struct of_device* dev, const struct of_match *match)
+{
+ int rc;
+
+ state = state_detached;
+
+ /* Lookup the fans in the device tree */
+ fcu_lookup_fans(dev->node);
+
+ /* Add the driver */
+ rc = i2c_add_driver(&therm_pm72_driver);
+ if (rc < 0)
+ return rc;
+ return 0;
+}
+
+static int fcu_of_remove(struct of_device* dev)
+{
+ i2c_del_driver(&therm_pm72_driver);
+
+ return 0;
+}
+
+static struct of_match fcu_of_match[] =
+{
+ {
+ .name = OF_ANY_MATCH,
+ .type = "fcu",
+ .compatible = OF_ANY_MATCH
+ },
+ {},
+};
+
+static struct of_platform_driver fcu_of_platform_driver =
+{
+ .name = "temperature",
+ .match_table = fcu_of_match,
+ .probe = fcu_of_probe,
+ .remove = fcu_of_remove
+};
+
+/*
+ * Check machine type, attach to i2c controller
+ */
+static int __init therm_pm72_init(void)
+{
+ struct device_node *np;
+
+ rackmac = machine_is_compatible("RackMac3,1");
+
+ if (!machine_is_compatible("PowerMac7,2") &&
+ !machine_is_compatible("PowerMac7,3") &&
+ !rackmac)
+ return -ENODEV;
+
+ printk(KERN_INFO "PowerMac G5 Thermal control driver %s\n", VERSION);
+
+ np = of_find_node_by_type(NULL, "fcu");
+ if (np == NULL) {
+ /* Some machines have strangely broken device-tree */
+ np = of_find_node_by_path("/u3@0,f8000000/i2c@f8001000/fan@15e");
+ if (np == NULL) {
+ printk(KERN_ERR "Can't find FCU in device-tree !\n");
+ return -ENODEV;
+ }
+ }
+ of_dev = of_platform_device_create(np, "temperature");
+ if (of_dev == NULL) {
+ printk(KERN_ERR "Can't register FCU platform device !\n");
+ return -ENODEV;
+ }
+
+ of_register_driver(&fcu_of_platform_driver);
+
+ return 0;
+}
+
+static void __exit therm_pm72_exit(void)
+{
+ of_unregister_driver(&fcu_of_platform_driver);
+
+ if (of_dev)
+ of_device_unregister(of_dev);
+}
+
+module_init(therm_pm72_init);
+module_exit(therm_pm72_exit);
+
+MODULE_AUTHOR("Benjamin Herrenschmidt <benh@kernel.crashing.org>");
+MODULE_DESCRIPTION("Driver for Apple's PowerMac G5 thermal control");
+MODULE_LICENSE("GPL");
+
diff --git a/drivers/macintosh/therm_pm72.h b/drivers/macintosh/therm_pm72.h
new file mode 100644
index 000000000000..c17e61f9c418
--- /dev/null
+++ b/drivers/macintosh/therm_pm72.h
@@ -0,0 +1,297 @@
+#ifndef __THERM_PMAC_7_2_H__
+#define __THERM_PMAC_7_2_H__
+
+typedef unsigned short fu16;
+typedef int fs32;
+typedef short fs16;
+
+struct mpu_data
+{
+ u8 signature; /* 0x00 - EEPROM sig. */
+ u8 bytes_used; /* 0x01 - Bytes used in eeprom (160 ?) */
+ u8 size; /* 0x02 - EEPROM size (256 ?) */
+ u8 version; /* 0x03 - EEPROM version */
+ u32 data_revision; /* 0x04 - Dataset revision */
+ u8 processor_bin_code[3]; /* 0x08 - Processor BIN code */
+ u8 bin_code_expansion; /* 0x0b - ??? (padding ?) */
+ u8 processor_num; /* 0x0c - Number of CPUs on this MPU */
+ u8 input_mul_bus_div; /* 0x0d - Clock input multiplier/bus divider */
+ u8 reserved1[2]; /* 0x0e - */
+ u32 input_clk_freq_high; /* 0x10 - Input clock frequency high */
+ u8 cpu_nb_target_cycles; /* 0x14 - ??? */
+ u8 cpu_statlat; /* 0x15 - ??? */
+ u8 cpu_snooplat; /* 0x16 - ??? */
+ u8 cpu_snoopacc; /* 0x17 - ??? */
+ u8 nb_paamwin; /* 0x18 - ??? */
+ u8 nb_statlat; /* 0x19 - ??? */
+ u8 nb_snooplat; /* 0x1a - ??? */
+ u8 nb_snoopwin; /* 0x1b - ??? */
+ u8 api_bus_mode; /* 0x1c - ??? */
+ u8 reserved2[3]; /* 0x1d - */
+ u32 input_clk_freq_low; /* 0x20 - Input clock frequency low */
+ u8 processor_card_slot; /* 0x24 - Processor card slot number */
+ u8 reserved3[2]; /* 0x25 - */
+ u8 padjmax; /* 0x27 - Max power adjustment (Not in OF!) */
+ u8 ttarget; /* 0x28 - Target temperature */
+ u8 tmax; /* 0x29 - Max temperature */
+ u8 pmaxh; /* 0x2a - Max power */
+ u8 tguardband; /* 0x2b - Guardband temp ??? Hist. len in OSX */
+ fs32 pid_gp; /* 0x2c - PID proportional gain */
+ fs32 pid_gr; /* 0x30 - PID reset gain */
+ fs32 pid_gd; /* 0x34 - PID derivative gain */
+ fu16 voph; /* 0x38 - Vop High */
+ fu16 vopl; /* 0x3a - Vop Low */
+ fs16 nactual_die; /* 0x3c - nActual Die */
+ fs16 nactual_heatsink; /* 0x3e - nActual Heatsink */
+ fs16 nactual_system; /* 0x40 - nActual System */
+ u16 calibration_flags; /* 0x42 - Calibration flags */
+ fu16 mdiode; /* 0x44 - Diode M value (scaling factor) */
+ fs16 bdiode; /* 0x46 - Diode B value (offset) */
+ fs32 theta_heat_sink; /* 0x48 - Theta heat sink */
+ u16 rminn_intake_fan; /* 0x4c - Intake fan min RPM */
+ u16 rmaxn_intake_fan; /* 0x4e - Intake fan max RPM */
+ u16 rminn_exhaust_fan; /* 0x50 - Exhaust fan min RPM */
+ u16 rmaxn_exhaust_fan; /* 0x52 - Exhaust fan max RPM */
+ u8 processor_part_num[8]; /* 0x54 - Processor part number XX pumps min/max */
+ u32 processor_lot_num; /* 0x5c - Processor lot number */
+ u8 orig_card_sernum[0x10]; /* 0x60 - Card original serial number */
+ u8 curr_card_sernum[0x10]; /* 0x70 - Card current serial number */
+ u8 mlb_sernum[0x18]; /* 0x80 - MLB serial number */
+ u32 checksum1; /* 0x98 - */
+ u32 checksum2; /* 0x9c - */
+}; /* Total size = 0xa0 */
+
+/* Display a 16.16 fixed point value */
+#define FIX32TOPRINT(f) ((f) >> 16),((((f) & 0xffff) * 1000) >> 16)
+
+/*
+ * Maximum number of seconds to be in critical state (after a
+ * normal shutdown attempt). If the machine isn't down after
+ * this counter elapses, we force an immediate machine power
+ * off.
+ */
+#define MAX_CRITICAL_STATE 30
+static char * critical_overtemp_path = "/sbin/critical_overtemp";
+
+/*
+ * This option is "weird" :) Basically, if you define this to 1
+ * the control loop for the RPMs fans (not PWMs) will apply the
+ * correction factor obtained from the PID to the _actual_ RPM
+ * speed read from the FCU.
+ * If you define the below constant to 0, then it will be
+ * applied to the setpoint RPM speed, that is basically the
+ * speed we proviously "asked" for.
+ *
+ * I'm not sure which of these Apple's algorithm is supposed
+ * to use
+ */
+#define RPM_PID_USE_ACTUAL_SPEED 0
+
+/*
+ * i2c IDs. Currently, we hard code those and assume that
+ * the FCU is on U3 bus 1 while all sensors are on U3 bus
+ * 0. This appear to be safe enough for this first version
+ * of the driver, though I would accept any clean patch
+ * doing a better use of the device-tree without turning the
+ * while i2c registration mecanism into a racy mess
+ *
+ * Note: Xserve changed this. We have some bits on the K2 bus,
+ * which I arbitrarily set to 0x200. Ultimately, we really want
+ * too lookup these in the device-tree though
+ */
+#define FAN_CTRLER_ID 0x15e
+#define SUPPLY_MONITOR_ID 0x58
+#define SUPPLY_MONITORB_ID 0x5a
+#define DRIVES_DALLAS_ID 0x94
+#define BACKSIDE_MAX_ID 0x98
+#define XSERVE_DIMMS_LM87 0x25a
+
+/*
+ * Some MAX6690, DS1775, LM87 register definitions
+ */
+#define MAX6690_INT_TEMP 0
+#define MAX6690_EXT_TEMP 1
+#define DS1775_TEMP 0
+#define LM87_INT_TEMP 0x27
+
+/*
+ * Scaling factors for the AD7417 ADC converters (except
+ * for the CPU diode which is obtained from the EEPROM).
+ * Those values are obtained from the property list of
+ * the darwin driver
+ */
+#define ADC_12V_CURRENT_SCALE 0x0320 /* _AD2 */
+#define ADC_CPU_VOLTAGE_SCALE 0x00a0 /* _AD3 */
+#define ADC_CPU_CURRENT_SCALE 0x1f40 /* _AD4 */
+
+/*
+ * PID factors for the U3/Backside fan control loop. We have 2 sets
+ * of values here, one set for U3 and one set for U3H
+ */
+#define BACKSIDE_FAN_PWM_DEFAULT_ID 1
+#define BACKSIDE_FAN_PWM_INDEX 0
+#define BACKSIDE_PID_U3_G_d 0x02800000
+#define BACKSIDE_PID_U3H_G_d 0x01400000
+#define BACKSIDE_PID_RACK_G_d 0x00500000
+#define BACKSIDE_PID_G_p 0x00500000
+#define BACKSIDE_PID_RACK_G_p 0x0004cccc
+#define BACKSIDE_PID_G_r 0x00000000
+#define BACKSIDE_PID_U3_INPUT_TARGET 0x00410000
+#define BACKSIDE_PID_U3H_INPUT_TARGET 0x004b0000
+#define BACKSIDE_PID_RACK_INPUT_TARGET 0x00460000
+#define BACKSIDE_PID_INTERVAL 5
+#define BACKSIDE_PID_RACK_INTERVAL 1
+#define BACKSIDE_PID_OUTPUT_MAX 100
+#define BACKSIDE_PID_U3_OUTPUT_MIN 20
+#define BACKSIDE_PID_U3H_OUTPUT_MIN 20
+#define BACKSIDE_PID_HISTORY_SIZE 2
+
+struct basckside_pid_params
+{
+ s32 G_d;
+ s32 G_p;
+ s32 G_r;
+ s32 input_target;
+ s32 output_min;
+ s32 output_max;
+ s32 interval;
+ int additive;
+};
+
+struct backside_pid_state
+{
+ int ticks;
+ struct i2c_client * monitor;
+ s32 sample_history[BACKSIDE_PID_HISTORY_SIZE];
+ s32 error_history[BACKSIDE_PID_HISTORY_SIZE];
+ int cur_sample;
+ s32 last_temp;
+ int pwm;
+ int first;
+};
+
+/*
+ * PID factors for the Drive Bay fan control loop
+ */
+#define DRIVES_FAN_RPM_DEFAULT_ID 2
+#define DRIVES_FAN_RPM_INDEX 1
+#define DRIVES_PID_G_d 0x01e00000
+#define DRIVES_PID_G_p 0x00500000
+#define DRIVES_PID_G_r 0x00000000
+#define DRIVES_PID_INPUT_TARGET 0x00280000
+#define DRIVES_PID_INTERVAL 5
+#define DRIVES_PID_OUTPUT_MAX 4000
+#define DRIVES_PID_OUTPUT_MIN 300
+#define DRIVES_PID_HISTORY_SIZE 2
+
+struct drives_pid_state
+{
+ int ticks;
+ struct i2c_client * monitor;
+ s32 sample_history[BACKSIDE_PID_HISTORY_SIZE];
+ s32 error_history[BACKSIDE_PID_HISTORY_SIZE];
+ int cur_sample;
+ s32 last_temp;
+ int rpm;
+ int first;
+};
+
+#define SLOTS_FAN_PWM_DEFAULT_ID 2
+#define SLOTS_FAN_PWM_INDEX 2
+#define SLOTS_FAN_DEFAULT_PWM 50 /* Do better here ! */
+
+
+/*
+ * PID factors for the Xserve DIMM control loop
+ */
+#define DIMM_PID_G_d 0
+#define DIMM_PID_G_p 0
+#define DIMM_PID_G_r 0x6553600
+#define DIMM_PID_INPUT_TARGET 3276800
+#define DIMM_PID_INTERVAL 1
+#define DIMM_PID_OUTPUT_MAX 14000
+#define DIMM_PID_OUTPUT_MIN 4000
+#define DIMM_PID_HISTORY_SIZE 20
+
+struct dimm_pid_state
+{
+ int ticks;
+ struct i2c_client * monitor;
+ s32 sample_history[DIMM_PID_HISTORY_SIZE];
+ s32 error_history[DIMM_PID_HISTORY_SIZE];
+ int cur_sample;
+ s32 last_temp;
+ int first;
+ int output;
+};
+
+
+
+/* Desktops */
+
+#define CPUA_INTAKE_FAN_RPM_DEFAULT_ID 3
+#define CPUA_EXHAUST_FAN_RPM_DEFAULT_ID 4
+#define CPUB_INTAKE_FAN_RPM_DEFAULT_ID 5
+#define CPUB_EXHAUST_FAN_RPM_DEFAULT_ID 6
+
+#define CPUA_INTAKE_FAN_RPM_INDEX 3
+#define CPUA_EXHAUST_FAN_RPM_INDEX 4
+#define CPUB_INTAKE_FAN_RPM_INDEX 5
+#define CPUB_EXHAUST_FAN_RPM_INDEX 6
+
+#define CPU_INTAKE_SCALE 0x0000f852
+#define CPU_TEMP_HISTORY_SIZE 2
+#define CPU_POWER_HISTORY_SIZE 10
+#define CPU_PID_INTERVAL 1
+#define CPU_MAX_OVERTEMP 30
+
+#define CPUA_PUMP_RPM_INDEX 7
+#define CPUB_PUMP_RPM_INDEX 8
+#define CPU_PUMP_OUTPUT_MAX 3200
+#define CPU_PUMP_OUTPUT_MIN 1250
+
+/* Xserve */
+#define CPU_A1_FAN_RPM_INDEX 9
+#define CPU_A2_FAN_RPM_INDEX 10
+#define CPU_A3_FAN_RPM_INDEX 11
+#define CPU_B1_FAN_RPM_INDEX 12
+#define CPU_B2_FAN_RPM_INDEX 13
+#define CPU_B3_FAN_RPM_INDEX 14
+
+
+struct cpu_pid_state
+{
+ int index;
+ struct i2c_client * monitor;
+ struct mpu_data mpu;
+ int overtemp;
+ s32 temp_history[CPU_TEMP_HISTORY_SIZE];
+ int cur_temp;
+ s32 power_history[CPU_POWER_HISTORY_SIZE];
+ s32 error_history[CPU_POWER_HISTORY_SIZE];
+ int cur_power;
+ int count_power;
+ int rpm;
+ int intake_rpm;
+ s32 voltage;
+ s32 current_a;
+ s32 last_temp;
+ s32 last_power;
+ int first;
+ u8 adc_config;
+ s32 pump_min;
+ s32 pump_max;
+};
+
+/*
+ * Driver state
+ */
+enum {
+ state_detached,
+ state_attaching,
+ state_attached,
+ state_detaching,
+};
+
+
+#endif /* __THERM_PMAC_7_2_H__ */
diff --git a/drivers/macintosh/therm_windtunnel.c b/drivers/macintosh/therm_windtunnel.c
new file mode 100644
index 000000000000..c153699d0f84
--- /dev/null
+++ b/drivers/macintosh/therm_windtunnel.c
@@ -0,0 +1,531 @@
+/*
+ * Creation Date: <2003/03/14 20:54:13 samuel>
+ * Time-stamp: <2004/03/20 14:20:59 samuel>
+ *
+ * <therm_windtunnel.c>
+ *
+ * The G4 "windtunnel" has a single fan controlled by an
+ * ADM1030 fan controller and a DS1775 thermostat.
+ *
+ * The fan controller is equipped with a temperature sensor
+ * which measures the case temperature. The DS1775 sensor
+ * measures the CPU temperature. This driver tunes the
+ * behavior of the fan. It is based upon empirical observations
+ * of the 'AppleFan' driver under Mac OS X.
+ *
+ * WARNING: This driver has only been testen on Apple's
+ * 1.25 MHz Dual G4 (March 03). It is tuned for a CPU
+ * temperatur around 57 C.
+ *
+ * Copyright (C) 2003, 2004 Samuel Rydh (samuel@ibrium.se)
+ *
+ * Loosely based upon 'thermostat.c' written by Benjamin Herrenschmidt
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <asm/prom.h>
+#include <asm/machdep.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/sections.h>
+#include <asm/of_device.h>
+
+#define LOG_TEMP 0 /* continously log temperature */
+
+#define I2C_DRIVERID_G4FAN 0x9001 /* fixme */
+
+static int do_probe( struct i2c_adapter *adapter, int addr, int kind);
+
+/* scan 0x48-0x4f (DS1775) and 0x2c-2x2f (ADM1030) */
+static unsigned short normal_i2c[] = { 0x49, 0x2c, I2C_CLIENT_END };
+static unsigned short normal_i2c_range[] = { 0x48, 0x4f, 0x2c, 0x2f, I2C_CLIENT_END };
+
+I2C_CLIENT_INSMOD;
+
+static struct {
+ volatile int running;
+ struct completion completion;
+ pid_t poll_task;
+
+ struct semaphore lock;
+ struct of_device *of_dev;
+
+ struct i2c_client *thermostat;
+ struct i2c_client *fan;
+
+ int overheat_temp; /* 100% fan at this temp */
+ int overheat_hyst;
+ int temp;
+ int casetemp;
+ int fan_level; /* active fan_table setting */
+
+ int downind;
+ int upind;
+
+ int r0, r1, r20, r23, r25; /* saved register */
+} x;
+
+#define T(x,y) (((x)<<8) | (y)*0x100/10 )
+
+static struct {
+ int fan_down_setting;
+ int temp;
+ int fan_up_setting;
+} fan_table[] = {
+ { 11, T(0,0), 11 }, /* min fan */
+ { 11, T(55,0), 11 },
+ { 6, T(55,3), 11 },
+ { 7, T(56,0), 11 },
+ { 8, T(57,0), 8 },
+ { 7, T(58,3), 7 },
+ { 6, T(58,8), 6 },
+ { 5, T(59,2), 5 },
+ { 4, T(59,6), 4 },
+ { 3, T(59,9), 3 },
+ { 2, T(60,1), 2 },
+ { 1, 0xfffff, 1 } /* on fire */
+};
+
+static void
+print_temp( const char *s, int temp )
+{
+ printk("%s%d.%d C", s ? s : "", temp>>8, (temp & 255)*10/256 );
+}
+
+static ssize_t
+show_cpu_temperature( struct device *dev, char *buf )
+{
+ return sprintf(buf, "%d.%d\n", x.temp>>8, (x.temp & 255)*10/256 );
+}
+
+static ssize_t
+show_case_temperature( struct device *dev, char *buf )
+{
+ return sprintf(buf, "%d.%d\n", x.casetemp>>8, (x.casetemp & 255)*10/256 );
+}
+
+static DEVICE_ATTR(cpu_temperature, S_IRUGO, show_cpu_temperature, NULL );
+static DEVICE_ATTR(case_temperature, S_IRUGO, show_case_temperature, NULL );
+
+
+
+/************************************************************************/
+/* controller thread */
+/************************************************************************/
+
+static int
+write_reg( struct i2c_client *cl, int reg, int data, int len )
+{
+ u8 tmp[3];
+
+ if( len < 1 || len > 2 || data < 0 )
+ return -EINVAL;
+
+ tmp[0] = reg;
+ tmp[1] = (len == 1) ? data : (data >> 8);
+ tmp[2] = data;
+ len++;
+
+ if( i2c_master_send(cl, tmp, len) != len )
+ return -ENODEV;
+ return 0;
+}
+
+static int
+read_reg( struct i2c_client *cl, int reg, int len )
+{
+ u8 buf[2];
+
+ if( len != 1 && len != 2 )
+ return -EINVAL;
+ buf[0] = reg;
+ if( i2c_master_send(cl, buf, 1) != 1 )
+ return -ENODEV;
+ if( i2c_master_recv(cl, buf, len) != len )
+ return -ENODEV;
+ return (len == 2)? ((unsigned int)buf[0] << 8) | buf[1] : buf[0];
+}
+
+static void
+tune_fan( int fan_setting )
+{
+ int val = (fan_setting << 3) | 7;
+
+ /* write_reg( x.fan, 0x24, val, 1 ); */
+ write_reg( x.fan, 0x25, val, 1 );
+ write_reg( x.fan, 0x20, 0, 1 );
+ print_temp("CPU-temp: ", x.temp );
+ if( x.casetemp )
+ print_temp(", Case: ", x.casetemp );
+ printk(", Fan: %d (tuned %+d)\n", 11-fan_setting, x.fan_level-fan_setting );
+
+ x.fan_level = fan_setting;
+}
+
+static void
+poll_temp( void )
+{
+ int temp, i, level, casetemp;
+
+ temp = read_reg( x.thermostat, 0, 2 );
+
+ /* this actually occurs when the computer is loaded */
+ if( temp < 0 )
+ return;
+
+ casetemp = read_reg(x.fan, 0x0b, 1) << 8;
+ casetemp |= (read_reg(x.fan, 0x06, 1) & 0x7) << 5;
+
+ if( LOG_TEMP && x.temp != temp ) {
+ print_temp("CPU-temp: ", temp );
+ print_temp(", Case: ", casetemp );
+ printk(", Fan: %d\n", 11-x.fan_level );
+ }
+ x.temp = temp;
+ x.casetemp = casetemp;
+
+ level = -1;
+ for( i=0; (temp & 0xffff) > fan_table[i].temp ; i++ )
+ ;
+ if( i < x.downind )
+ level = fan_table[i].fan_down_setting;
+ x.downind = i;
+
+ for( i=0; (temp & 0xffff) >= fan_table[i+1].temp ; i++ )
+ ;
+ if( x.upind < i )
+ level = fan_table[i].fan_up_setting;
+ x.upind = i;
+
+ if( level >= 0 )
+ tune_fan( level );
+}
+
+
+static void
+setup_hardware( void )
+{
+ int val;
+
+ /* save registers (if we unload the module) */
+ x.r0 = read_reg( x.fan, 0x00, 1 );
+ x.r1 = read_reg( x.fan, 0x01, 1 );
+ x.r20 = read_reg( x.fan, 0x20, 1 );
+ x.r23 = read_reg( x.fan, 0x23, 1 );
+ x.r25 = read_reg( x.fan, 0x25, 1 );
+
+ /* improve measurement resolution (convergence time 1.5s) */
+ if( (val=read_reg(x.thermostat, 1, 1)) >= 0 ) {
+ val |= 0x60;
+ if( write_reg( x.thermostat, 1, val, 1 ) )
+ printk("Failed writing config register\n");
+ }
+ /* disable interrupts and TAC input */
+ write_reg( x.fan, 0x01, 0x01, 1 );
+ /* enable filter */
+ write_reg( x.fan, 0x23, 0x91, 1 );
+ /* remote temp. controls fan */
+ write_reg( x.fan, 0x00, 0x95, 1 );
+
+ /* The thermostat (which besides measureing temperature controls
+ * has a THERM output which puts the fan on 100%) is usually
+ * set to kick in at 80 C (chip default). We reduce this a bit
+ * to be on the safe side (OSX doesn't)...
+ */
+ if( x.overheat_temp == (80 << 8) ) {
+ x.overheat_temp = 65 << 8;
+ x.overheat_hyst = 60 << 8;
+ write_reg( x.thermostat, 2, x.overheat_hyst, 2 );
+ write_reg( x.thermostat, 3, x.overheat_temp, 2 );
+
+ print_temp("Reducing overheating limit to ", x.overheat_temp );
+ print_temp(" (Hyst: ", x.overheat_hyst );
+ printk(")\n");
+ }
+
+ /* set an initial fan setting */
+ x.downind = 0xffff;
+ x.upind = -1;
+ /* tune_fan( fan_up_table[x.upind].fan_setting ); */
+
+ device_create_file( &x.of_dev->dev, &dev_attr_cpu_temperature );
+ device_create_file( &x.of_dev->dev, &dev_attr_case_temperature );
+}
+
+static void
+restore_regs( void )
+{
+ device_remove_file( &x.of_dev->dev, &dev_attr_cpu_temperature );
+ device_remove_file( &x.of_dev->dev, &dev_attr_case_temperature );
+
+ write_reg( x.fan, 0x01, x.r1, 1 );
+ write_reg( x.fan, 0x20, x.r20, 1 );
+ write_reg( x.fan, 0x23, x.r23, 1 );
+ write_reg( x.fan, 0x25, x.r25, 1 );
+ write_reg( x.fan, 0x00, x.r0, 1 );
+}
+
+static int
+control_loop( void *dummy )
+{
+ daemonize("g4fand");
+
+ down( &x.lock );
+ setup_hardware();
+
+ while( x.running ) {
+ up( &x.lock );
+
+ msleep_interruptible(8000);
+
+ down( &x.lock );
+ poll_temp();
+ }
+
+ restore_regs();
+ up( &x.lock );
+
+ complete_and_exit( &x.completion, 0 );
+}
+
+
+/************************************************************************/
+/* i2c probing and setup */
+/************************************************************************/
+
+static int
+do_attach( struct i2c_adapter *adapter )
+{
+ int ret = 0;
+
+ if( strncmp(adapter->name, "uni-n", 5) )
+ return 0;
+
+ if( !x.running ) {
+ ret = i2c_probe( adapter, &addr_data, &do_probe );
+ if( x.thermostat && x.fan ) {
+ x.running = 1;
+ init_completion( &x.completion );
+ x.poll_task = kernel_thread( control_loop, NULL, SIGCHLD | CLONE_KERNEL );
+ }
+ }
+ return ret;
+}
+
+static int
+do_detach( struct i2c_client *client )
+{
+ int err;
+
+ if( (err=i2c_detach_client(client)) )
+ printk(KERN_ERR "failed to detach thermostat client\n");
+ else {
+ if( x.running ) {
+ x.running = 0;
+ wait_for_completion( &x.completion );
+ }
+ if( client == x.thermostat )
+ x.thermostat = NULL;
+ else if( client == x.fan )
+ x.fan = NULL;
+ else {
+ printk(KERN_ERR "g4fan: bad client\n");
+ }
+ kfree( client );
+ }
+ return err;
+}
+
+static struct i2c_driver g4fan_driver = {
+ .owner = THIS_MODULE,
+ .name = "therm_windtunnel",
+ .id = I2C_DRIVERID_G4FAN,
+ .flags = I2C_DF_NOTIFY,
+ .attach_adapter = do_attach,
+ .detach_client = do_detach,
+};
+
+static int
+attach_fan( struct i2c_client *cl )
+{
+ if( x.fan )
+ goto out;
+
+ /* check that this is an ADM1030 */
+ if( read_reg(cl, 0x3d, 1) != 0x30 || read_reg(cl, 0x3e, 1) != 0x41 )
+ goto out;
+ printk("ADM1030 fan controller [@%02x]\n", cl->addr );
+
+ strlcpy( cl->name, "ADM1030 fan controller", sizeof(cl->name) );
+
+ if( !i2c_attach_client(cl) )
+ x.fan = cl;
+ out:
+ if( cl != x.fan )
+ kfree( cl );
+ return 0;
+}
+
+static int
+attach_thermostat( struct i2c_client *cl )
+{
+ int hyst_temp, os_temp, temp;
+
+ if( x.thermostat )
+ goto out;
+
+ if( (temp=read_reg(cl, 0, 2)) < 0 )
+ goto out;
+
+ /* temperature sanity check */
+ if( temp < 0x1600 || temp > 0x3c00 )
+ goto out;
+ hyst_temp = read_reg(cl, 2, 2);
+ os_temp = read_reg(cl, 3, 2);
+ if( hyst_temp < 0 || os_temp < 0 )
+ goto out;
+
+ printk("DS1775 digital thermometer [@%02x]\n", cl->addr );
+ print_temp("Temp: ", temp );
+ print_temp(" Hyst: ", hyst_temp );
+ print_temp(" OS: ", os_temp );
+ printk("\n");
+
+ x.temp = temp;
+ x.overheat_temp = os_temp;
+ x.overheat_hyst = hyst_temp;
+
+ strlcpy( cl->name, "DS1775 thermostat", sizeof(cl->name) );
+
+ if( !i2c_attach_client(cl) )
+ x.thermostat = cl;
+out:
+ if( cl != x.thermostat )
+ kfree( cl );
+ return 0;
+}
+
+static int
+do_probe( struct i2c_adapter *adapter, int addr, int kind )
+{
+ struct i2c_client *cl;
+
+ if( !i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA
+ | I2C_FUNC_SMBUS_WRITE_BYTE) )
+ return 0;
+
+ if( !(cl=kmalloc(sizeof(*cl), GFP_KERNEL)) )
+ return -ENOMEM;
+ memset( cl, 0, sizeof(struct i2c_client) );
+
+ cl->addr = addr;
+ cl->adapter = adapter;
+ cl->driver = &g4fan_driver;
+ cl->flags = 0;
+
+ if( addr < 0x48 )
+ return attach_fan( cl );
+ return attach_thermostat( cl );
+}
+
+
+/************************************************************************/
+/* initialization / cleanup */
+/************************************************************************/
+
+static int
+therm_of_probe( struct of_device *dev, const struct of_match *match )
+{
+ return i2c_add_driver( &g4fan_driver );
+}
+
+static int
+therm_of_remove( struct of_device *dev )
+{
+ return i2c_del_driver( &g4fan_driver );
+}
+
+static struct of_match therm_of_match[] = {{
+ .name = "fan",
+ .type = OF_ANY_MATCH,
+ .compatible = "adm1030"
+ }, {}
+};
+
+static struct of_platform_driver therm_of_driver = {
+ .name = "temperature",
+ .match_table = therm_of_match,
+ .probe = therm_of_probe,
+ .remove = therm_of_remove,
+};
+
+struct apple_thermal_info {
+ u8 id; /* implementation ID */
+ u8 fan_count; /* number of fans */
+ u8 thermostat_count; /* number of thermostats */
+ u8 unused;
+};
+
+static int __init
+g4fan_init( void )
+{
+ struct apple_thermal_info *info;
+ struct device_node *np;
+
+ init_MUTEX( &x.lock );
+
+ if( !(np=of_find_node_by_name(NULL, "power-mgt")) )
+ return -ENODEV;
+ info = (struct apple_thermal_info*)get_property(np, "thermal-info", NULL);
+ of_node_put(np);
+
+ if( !info || !machine_is_compatible("PowerMac3,6") )
+ return -ENODEV;
+
+ if( info->id != 3 ) {
+ printk(KERN_ERR "therm_windtunnel: unsupported thermal design %d\n", info->id );
+ return -ENODEV;
+ }
+ if( !(np=of_find_node_by_name(NULL, "fan")) )
+ return -ENODEV;
+ x.of_dev = of_platform_device_create( np, "temperature" );
+ of_node_put( np );
+
+ if( !x.of_dev ) {
+ printk(KERN_ERR "Can't register fan controller!\n");
+ return -ENODEV;
+ }
+
+ of_register_driver( &therm_of_driver );
+ return 0;
+}
+
+static void __exit
+g4fan_exit( void )
+{
+ of_unregister_driver( &therm_of_driver );
+
+ if( x.of_dev )
+ of_device_unregister( x.of_dev );
+}
+
+module_init(g4fan_init);
+module_exit(g4fan_exit);
+
+MODULE_AUTHOR("Samuel Rydh <samuel@ibrium.se>");
+MODULE_DESCRIPTION("Apple G4 (windtunnel) fan controller");
+MODULE_LICENSE("GPL");
diff --git a/drivers/macintosh/via-cuda.c b/drivers/macintosh/via-cuda.c
new file mode 100644
index 000000000000..417deb5de108
--- /dev/null
+++ b/drivers/macintosh/via-cuda.c
@@ -0,0 +1,628 @@
+/*
+ * Device driver for the via-cuda on Apple Powermacs.
+ *
+ * The VIA (versatile interface adapter) interfaces to the CUDA,
+ * a 6805 microprocessor core which controls the ADB (Apple Desktop
+ * Bus) which connects to the keyboard and mouse. The CUDA also
+ * controls system power and the RTC (real time clock) chip.
+ *
+ * Copyright (C) 1996 Paul Mackerras.
+ */
+#include <stdarg.h>
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/adb.h>
+#include <linux/cuda.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+#ifdef CONFIG_PPC
+#include <asm/prom.h>
+#include <asm/machdep.h>
+#else
+#include <asm/macintosh.h>
+#include <asm/macints.h>
+#include <asm/machw.h>
+#include <asm/mac_via.h>
+#endif
+#include <asm/io.h>
+#include <asm/system.h>
+#include <linux/init.h>
+
+static volatile unsigned char __iomem *via;
+static DEFINE_SPINLOCK(cuda_lock);
+
+#ifdef CONFIG_MAC
+#define CUDA_IRQ IRQ_MAC_ADB
+#define __openfirmware
+#define eieio()
+#else
+#define CUDA_IRQ vias->intrs[0].line
+#endif
+
+/* VIA registers - spaced 0x200 bytes apart */
+#define RS 0x200 /* skip between registers */
+#define B 0 /* B-side data */
+#define A RS /* A-side data */
+#define DIRB (2*RS) /* B-side direction (1=output) */
+#define DIRA (3*RS) /* A-side direction (1=output) */
+#define T1CL (4*RS) /* Timer 1 ctr/latch (low 8 bits) */
+#define T1CH (5*RS) /* Timer 1 counter (high 8 bits) */
+#define T1LL (6*RS) /* Timer 1 latch (low 8 bits) */
+#define T1LH (7*RS) /* Timer 1 latch (high 8 bits) */
+#define T2CL (8*RS) /* Timer 2 ctr/latch (low 8 bits) */
+#define T2CH (9*RS) /* Timer 2 counter (high 8 bits) */
+#define SR (10*RS) /* Shift register */
+#define ACR (11*RS) /* Auxiliary control register */
+#define PCR (12*RS) /* Peripheral control register */
+#define IFR (13*RS) /* Interrupt flag register */
+#define IER (14*RS) /* Interrupt enable register */
+#define ANH (15*RS) /* A-side data, no handshake */
+
+/* Bits in B data register: all active low */
+#define TREQ 0x08 /* Transfer request (input) */
+#define TACK 0x10 /* Transfer acknowledge (output) */
+#define TIP 0x20 /* Transfer in progress (output) */
+
+/* Bits in ACR */
+#define SR_CTRL 0x1c /* Shift register control bits */
+#define SR_EXT 0x0c /* Shift on external clock */
+#define SR_OUT 0x10 /* Shift out if 1 */
+
+/* Bits in IFR and IER */
+#define IER_SET 0x80 /* set bits in IER */
+#define IER_CLR 0 /* clear bits in IER */
+#define SR_INT 0x04 /* Shift register full/empty */
+
+static enum cuda_state {
+ idle,
+ sent_first_byte,
+ sending,
+ reading,
+ read_done,
+ awaiting_reply
+} cuda_state;
+
+static struct adb_request *current_req;
+static struct adb_request *last_req;
+static unsigned char cuda_rbuf[16];
+static unsigned char *reply_ptr;
+static int reading_reply;
+static int data_index;
+#ifdef CONFIG_PPC
+static struct device_node *vias;
+#endif
+static int cuda_fully_inited = 0;
+
+#ifdef CONFIG_ADB
+static int cuda_probe(void);
+static int cuda_init(void);
+static int cuda_send_request(struct adb_request *req, int sync);
+static int cuda_adb_autopoll(int devs);
+static int cuda_reset_adb_bus(void);
+#endif /* CONFIG_ADB */
+
+static int cuda_init_via(void);
+static void cuda_start(void);
+static irqreturn_t cuda_interrupt(int irq, void *arg, struct pt_regs *regs);
+static void cuda_input(unsigned char *buf, int nb, struct pt_regs *regs);
+void cuda_poll(void);
+static int cuda_write(struct adb_request *req);
+
+int cuda_request(struct adb_request *req,
+ void (*done)(struct adb_request *), int nbytes, ...);
+
+#ifdef CONFIG_ADB
+struct adb_driver via_cuda_driver = {
+ "CUDA",
+ cuda_probe,
+ cuda_init,
+ cuda_send_request,
+ cuda_adb_autopoll,
+ cuda_poll,
+ cuda_reset_adb_bus
+};
+#endif /* CONFIG_ADB */
+
+#ifdef CONFIG_PPC
+int __init
+find_via_cuda(void)
+{
+ int err;
+ struct adb_request req;
+
+ if (vias != 0)
+ return 1;
+ vias = find_devices("via-cuda");
+ if (vias == 0)
+ return 0;
+ if (vias->next != 0)
+ printk(KERN_WARNING "Warning: only using 1st via-cuda\n");
+
+#if 0
+ { int i;
+
+ printk("find_via_cuda: node = %p, addrs =", vias->node);
+ for (i = 0; i < vias->n_addrs; ++i)
+ printk(" %x(%x)", vias->addrs[i].address, vias->addrs[i].size);
+ printk(", intrs =");
+ for (i = 0; i < vias->n_intrs; ++i)
+ printk(" %x", vias->intrs[i].line);
+ printk("\n"); }
+#endif
+
+ if (vias->n_addrs != 1 || vias->n_intrs != 1) {
+ printk(KERN_ERR "via-cuda: expecting 1 address (%d) and 1 interrupt (%d)\n",
+ vias->n_addrs, vias->n_intrs);
+ if (vias->n_addrs < 1 || vias->n_intrs < 1)
+ return 0;
+ }
+ via = ioremap(vias->addrs->address, 0x2000);
+
+ cuda_state = idle;
+ sys_ctrler = SYS_CTRLER_CUDA;
+
+ err = cuda_init_via();
+ if (err) {
+ printk(KERN_ERR "cuda_init_via() failed\n");
+ via = NULL;
+ return 0;
+ }
+
+ /* Clear and enable interrupts, but only on PPC. On 68K it's done */
+ /* for us by the main VIA driver in arch/m68k/mac/via.c */
+
+#ifndef CONFIG_MAC
+ out_8(&via[IFR], 0x7f); /* clear interrupts by writing 1s */
+ out_8(&via[IER], IER_SET|SR_INT); /* enable interrupt from SR */
+#endif
+
+ /* enable autopoll */
+ cuda_request(&req, NULL, 3, CUDA_PACKET, CUDA_AUTOPOLL, 1);
+ while (!req.complete)
+ cuda_poll();
+
+ return 1;
+}
+#endif /* CONFIG_PPC */
+
+static int __init via_cuda_start(void)
+{
+ if (via == NULL)
+ return -ENODEV;
+
+#ifdef CONFIG_PPC
+ request_OF_resource(vias, 0, NULL);
+#endif
+
+ if (request_irq(CUDA_IRQ, cuda_interrupt, 0, "ADB", cuda_interrupt)) {
+ printk(KERN_ERR "cuda_init: can't get irq %d\n", CUDA_IRQ);
+ return -EAGAIN;
+ }
+
+ printk("Macintosh CUDA driver v0.5 for Unified ADB.\n");
+
+ cuda_fully_inited = 1;
+ return 0;
+}
+
+device_initcall(via_cuda_start);
+
+#ifdef CONFIG_ADB
+static int
+cuda_probe(void)
+{
+#ifdef CONFIG_PPC
+ if (sys_ctrler != SYS_CTRLER_CUDA)
+ return -ENODEV;
+#else
+ if (macintosh_config->adb_type != MAC_ADB_CUDA)
+ return -ENODEV;
+ via = via1;
+#endif
+ return 0;
+}
+
+static int __init
+cuda_init(void)
+{
+#ifdef CONFIG_PPC
+ if (via == NULL)
+ return -ENODEV;
+ return 0;
+#else
+ int err = cuda_init_via();
+ if (err) {
+ printk(KERN_ERR "cuda_init_via() failed\n");
+ return -ENODEV;
+ }
+
+ return via_cuda_start();
+#endif
+}
+#endif /* CONFIG_ADB */
+
+#define WAIT_FOR(cond, what) \
+ do { \
+ int x; \
+ for (x = 1000; !(cond); --x) { \
+ if (x == 0) { \
+ printk("Timeout waiting for " what "\n"); \
+ return -ENXIO; \
+ } \
+ udelay(100); \
+ } \
+ } while (0)
+
+static int
+cuda_init_via(void)
+{
+ out_8(&via[DIRB], (in_8(&via[DIRB]) | TACK | TIP) & ~TREQ); /* TACK & TIP out */
+ out_8(&via[B], in_8(&via[B]) | TACK | TIP); /* negate them */
+ out_8(&via[ACR] ,(in_8(&via[ACR]) & ~SR_CTRL) | SR_EXT); /* SR data in */
+ (void)in_8(&via[SR]); /* clear any left-over data */
+#ifndef CONFIG_MAC
+ out_8(&via[IER], 0x7f); /* disable interrupts from VIA */
+ (void)in_8(&via[IER]);
+#endif
+
+ /* delay 4ms and then clear any pending interrupt */
+ mdelay(4);
+ (void)in_8(&via[SR]);
+ out_8(&via[IFR], in_8(&via[IFR]) & 0x7f);
+
+ /* sync with the CUDA - assert TACK without TIP */
+ out_8(&via[B], in_8(&via[B]) & ~TACK);
+
+ /* wait for the CUDA to assert TREQ in response */
+ WAIT_FOR((in_8(&via[B]) & TREQ) == 0, "CUDA response to sync");
+
+ /* wait for the interrupt and then clear it */
+ WAIT_FOR(in_8(&via[IFR]) & SR_INT, "CUDA response to sync (2)");
+ (void)in_8(&via[SR]);
+ out_8(&via[IFR], in_8(&via[IFR]) & 0x7f);
+
+ /* finish the sync by negating TACK */
+ out_8(&via[B], in_8(&via[B]) | TACK);
+
+ /* wait for the CUDA to negate TREQ and the corresponding interrupt */
+ WAIT_FOR(in_8(&via[B]) & TREQ, "CUDA response to sync (3)");
+ WAIT_FOR(in_8(&via[IFR]) & SR_INT, "CUDA response to sync (4)");
+ (void)in_8(&via[SR]);
+ out_8(&via[IFR], in_8(&via[IFR]) & 0x7f);
+ out_8(&via[B], in_8(&via[B]) | TIP); /* should be unnecessary */
+
+ return 0;
+}
+
+#ifdef CONFIG_ADB
+/* Send an ADB command */
+static int
+cuda_send_request(struct adb_request *req, int sync)
+{
+ int i;
+
+ if ((via == NULL) || !cuda_fully_inited) {
+ req->complete = 1;
+ return -ENXIO;
+ }
+
+ req->reply_expected = 1;
+
+ i = cuda_write(req);
+ if (i)
+ return i;
+
+ if (sync) {
+ while (!req->complete)
+ cuda_poll();
+ }
+ return 0;
+}
+
+
+/* Enable/disable autopolling */
+static int
+cuda_adb_autopoll(int devs)
+{
+ struct adb_request req;
+
+ if ((via == NULL) || !cuda_fully_inited)
+ return -ENXIO;
+
+ cuda_request(&req, NULL, 3, CUDA_PACKET, CUDA_AUTOPOLL, (devs? 1: 0));
+ while (!req.complete)
+ cuda_poll();
+ return 0;
+}
+
+/* Reset adb bus - how do we do this?? */
+static int
+cuda_reset_adb_bus(void)
+{
+ struct adb_request req;
+
+ if ((via == NULL) || !cuda_fully_inited)
+ return -ENXIO;
+
+ cuda_request(&req, NULL, 2, ADB_PACKET, 0); /* maybe? */
+ while (!req.complete)
+ cuda_poll();
+ return 0;
+}
+#endif /* CONFIG_ADB */
+/* Construct and send a cuda request */
+int
+cuda_request(struct adb_request *req, void (*done)(struct adb_request *),
+ int nbytes, ...)
+{
+ va_list list;
+ int i;
+
+ if (via == NULL) {
+ req->complete = 1;
+ return -ENXIO;
+ }
+
+ req->nbytes = nbytes;
+ req->done = done;
+ va_start(list, nbytes);
+ for (i = 0; i < nbytes; ++i)
+ req->data[i] = va_arg(list, int);
+ va_end(list);
+ req->reply_expected = 1;
+ return cuda_write(req);
+}
+
+static int
+cuda_write(struct adb_request *req)
+{
+ unsigned long flags;
+
+ if (req->nbytes < 2 || req->data[0] > CUDA_PACKET) {
+ req->complete = 1;
+ return -EINVAL;
+ }
+ req->next = NULL;
+ req->sent = 0;
+ req->complete = 0;
+ req->reply_len = 0;
+
+ spin_lock_irqsave(&cuda_lock, flags);
+ if (current_req != 0) {
+ last_req->next = req;
+ last_req = req;
+ } else {
+ current_req = req;
+ last_req = req;
+ if (cuda_state == idle)
+ cuda_start();
+ }
+ spin_unlock_irqrestore(&cuda_lock, flags);
+
+ return 0;
+}
+
+static void
+cuda_start(void)
+{
+ struct adb_request *req;
+
+ /* assert cuda_state == idle */
+ /* get the packet to send */
+ req = current_req;
+ if (req == 0)
+ return;
+ if ((in_8(&via[B]) & TREQ) == 0)
+ return; /* a byte is coming in from the CUDA */
+
+ /* set the shift register to shift out and send a byte */
+ out_8(&via[ACR], in_8(&via[ACR]) | SR_OUT);
+ out_8(&via[SR], req->data[0]);
+ out_8(&via[B], in_8(&via[B]) & ~TIP);
+ cuda_state = sent_first_byte;
+}
+
+void
+cuda_poll(void)
+{
+ unsigned long flags;
+
+ /* cuda_interrupt only takes a normal lock, we disable
+ * interrupts here to avoid re-entering and thus deadlocking.
+ * An option would be to disable only the IRQ source with
+ * disable_irq(), would that work on m68k ? --BenH
+ */
+ local_irq_save(flags);
+ cuda_interrupt(0, NULL, NULL);
+ local_irq_restore(flags);
+}
+
+static irqreturn_t
+cuda_interrupt(int irq, void *arg, struct pt_regs *regs)
+{
+ int status;
+ struct adb_request *req = NULL;
+ unsigned char ibuf[16];
+ int ibuf_len = 0;
+ int complete = 0;
+ unsigned char virq;
+
+ spin_lock(&cuda_lock);
+
+ virq = in_8(&via[IFR]) & 0x7f;
+ out_8(&via[IFR], virq);
+ if ((virq & SR_INT) == 0) {
+ spin_unlock(&cuda_lock);
+ return IRQ_NONE;
+ }
+
+ status = (~in_8(&via[B]) & (TIP|TREQ)) | (in_8(&via[ACR]) & SR_OUT);
+ /* printk("cuda_interrupt: state=%d status=%x\n", cuda_state, status); */
+ switch (cuda_state) {
+ case idle:
+ /* CUDA has sent us the first byte of data - unsolicited */
+ if (status != TREQ)
+ printk("cuda: state=idle, status=%x\n", status);
+ (void)in_8(&via[SR]);
+ out_8(&via[B], in_8(&via[B]) & ~TIP);
+ cuda_state = reading;
+ reply_ptr = cuda_rbuf;
+ reading_reply = 0;
+ break;
+
+ case awaiting_reply:
+ /* CUDA has sent us the first byte of data of a reply */
+ if (status != TREQ)
+ printk("cuda: state=awaiting_reply, status=%x\n", status);
+ (void)in_8(&via[SR]);
+ out_8(&via[B], in_8(&via[B]) & ~TIP);
+ cuda_state = reading;
+ reply_ptr = current_req->reply;
+ reading_reply = 1;
+ break;
+
+ case sent_first_byte:
+ if (status == TREQ + TIP + SR_OUT) {
+ /* collision */
+ out_8(&via[ACR], in_8(&via[ACR]) & ~SR_OUT);
+ (void)in_8(&via[SR]);
+ out_8(&via[B], in_8(&via[B]) | TIP | TACK);
+ cuda_state = idle;
+ } else {
+ /* assert status == TIP + SR_OUT */
+ if (status != TIP + SR_OUT)
+ printk("cuda: state=sent_first_byte status=%x\n", status);
+ out_8(&via[SR], current_req->data[1]);
+ out_8(&via[B], in_8(&via[B]) ^ TACK);
+ data_index = 2;
+ cuda_state = sending;
+ }
+ break;
+
+ case sending:
+ req = current_req;
+ if (data_index >= req->nbytes) {
+ out_8(&via[ACR], in_8(&via[ACR]) & ~SR_OUT);
+ (void)in_8(&via[SR]);
+ out_8(&via[B], in_8(&via[B]) | TACK | TIP);
+ req->sent = 1;
+ if (req->reply_expected) {
+ cuda_state = awaiting_reply;
+ } else {
+ current_req = req->next;
+ complete = 1;
+ /* not sure about this */
+ cuda_state = idle;
+ cuda_start();
+ }
+ } else {
+ out_8(&via[SR], req->data[data_index++]);
+ out_8(&via[B], in_8(&via[B]) ^ TACK);
+ }
+ break;
+
+ case reading:
+ *reply_ptr++ = in_8(&via[SR]);
+ if (status == TIP) {
+ /* that's all folks */
+ out_8(&via[B], in_8(&via[B]) | TACK | TIP);
+ cuda_state = read_done;
+ } else {
+ /* assert status == TIP | TREQ */
+ if (status != TIP + TREQ)
+ printk("cuda: state=reading status=%x\n", status);
+ out_8(&via[B], in_8(&via[B]) ^ TACK);
+ }
+ break;
+
+ case read_done:
+ (void)in_8(&via[SR]);
+ if (reading_reply) {
+ req = current_req;
+ req->reply_len = reply_ptr - req->reply;
+ if (req->data[0] == ADB_PACKET) {
+ /* Have to adjust the reply from ADB commands */
+ if (req->reply_len <= 2 || (req->reply[1] & 2) != 0) {
+ /* the 0x2 bit indicates no response */
+ req->reply_len = 0;
+ } else {
+ /* leave just the command and result bytes in the reply */
+ req->reply_len -= 2;
+ memmove(req->reply, req->reply + 2, req->reply_len);
+ }
+ }
+ current_req = req->next;
+ complete = 1;
+ } else {
+ /* This is tricky. We must break the spinlock to call
+ * cuda_input. However, doing so means we might get
+ * re-entered from another CPU getting an interrupt
+ * or calling cuda_poll(). I ended up using the stack
+ * (it's only for 16 bytes) and moving the actual
+ * call to cuda_input to outside of the lock.
+ */
+ ibuf_len = reply_ptr - cuda_rbuf;
+ memcpy(ibuf, cuda_rbuf, ibuf_len);
+ }
+ if (status == TREQ) {
+ out_8(&via[B], in_8(&via[B]) & ~TIP);
+ cuda_state = reading;
+ reply_ptr = cuda_rbuf;
+ reading_reply = 0;
+ } else {
+ cuda_state = idle;
+ cuda_start();
+ }
+ break;
+
+ default:
+ printk("cuda_interrupt: unknown cuda_state %d?\n", cuda_state);
+ }
+ spin_unlock(&cuda_lock);
+ if (complete && req) {
+ void (*done)(struct adb_request *) = req->done;
+ mb();
+ req->complete = 1;
+ /* Here, we assume that if the request has a done member, the
+ * struct request will survive to setting req->complete to 1
+ */
+ if (done)
+ (*done)(req);
+ }
+ if (ibuf_len)
+ cuda_input(ibuf, ibuf_len, regs);
+ return IRQ_HANDLED;
+}
+
+static void
+cuda_input(unsigned char *buf, int nb, struct pt_regs *regs)
+{
+ int i;
+
+ switch (buf[0]) {
+ case ADB_PACKET:
+#ifdef CONFIG_XMON
+ if (nb == 5 && buf[2] == 0x2c) {
+ extern int xmon_wants_key, xmon_adb_keycode;
+ if (xmon_wants_key) {
+ xmon_adb_keycode = buf[3];
+ return;
+ }
+ }
+#endif /* CONFIG_XMON */
+#ifdef CONFIG_ADB
+ adb_input(buf+2, nb-2, regs, buf[1] & 0x40);
+#endif /* CONFIG_ADB */
+ break;
+
+ default:
+ printk("data from cuda (%d bytes):", nb);
+ for (i = 0; i < nb; ++i)
+ printk(" %.2x", buf[i]);
+ printk("\n");
+ }
+}
diff --git a/drivers/macintosh/via-macii.c b/drivers/macintosh/via-macii.c
new file mode 100644
index 000000000000..e9a159ad3022
--- /dev/null
+++ b/drivers/macintosh/via-macii.c
@@ -0,0 +1,653 @@
+/*
+ * Device driver for the via ADB on (many) Mac II-class machines
+ *
+ * Based on the original ADB keyboard handler Copyright (c) 1997 Alan Cox
+ * Also derived from code Copyright (C) 1996 Paul Mackerras.
+ *
+ * With various updates provided over the years by Michael Schmitz,
+ * Guideo Koerber and others.
+ *
+ * Rewrite for Unified ADB by Joshua M. Thompson (funaho@jurai.org)
+ *
+ * 1999-08-02 (jmt) - Initial rewrite for Unified ADB.
+ * 2000-03-29 Tony Mantler <tonym@mac.linux-m68k.org>
+ * - Big overhaul, should actually work now.
+ */
+
+#include <stdarg.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/adb.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <asm/macintosh.h>
+#include <asm/macints.h>
+#include <asm/machw.h>
+#include <asm/mac_via.h>
+#include <asm/io.h>
+#include <asm/system.h>
+
+static volatile unsigned char *via;
+
+/* VIA registers - spaced 0x200 bytes apart */
+#define RS 0x200 /* skip between registers */
+#define B 0 /* B-side data */
+#define A RS /* A-side data */
+#define DIRB (2*RS) /* B-side direction (1=output) */
+#define DIRA (3*RS) /* A-side direction (1=output) */
+#define T1CL (4*RS) /* Timer 1 ctr/latch (low 8 bits) */
+#define T1CH (5*RS) /* Timer 1 counter (high 8 bits) */
+#define T1LL (6*RS) /* Timer 1 latch (low 8 bits) */
+#define T1LH (7*RS) /* Timer 1 latch (high 8 bits) */
+#define T2CL (8*RS) /* Timer 2 ctr/latch (low 8 bits) */
+#define T2CH (9*RS) /* Timer 2 counter (high 8 bits) */
+#define SR (10*RS) /* Shift register */
+#define ACR (11*RS) /* Auxiliary control register */
+#define PCR (12*RS) /* Peripheral control register */
+#define IFR (13*RS) /* Interrupt flag register */
+#define IER (14*RS) /* Interrupt enable register */
+#define ANH (15*RS) /* A-side data, no handshake */
+
+/* Bits in B data register: all active low */
+#define TREQ 0x08 /* Transfer request (input) */
+#define TACK 0x10 /* Transfer acknowledge (output) */
+#define TIP 0x20 /* Transfer in progress (output) */
+#define ST_MASK 0x30 /* mask for selecting ADB state bits */
+
+/* Bits in ACR */
+#define SR_CTRL 0x1c /* Shift register control bits */
+#define SR_EXT 0x0c /* Shift on external clock */
+#define SR_OUT 0x10 /* Shift out if 1 */
+
+/* Bits in IFR and IER */
+#define IER_SET 0x80 /* set bits in IER */
+#define IER_CLR 0 /* clear bits in IER */
+#define SR_INT 0x04 /* Shift register full/empty */
+#define SR_DATA 0x08 /* Shift register data */
+#define SR_CLOCK 0x10 /* Shift register clock */
+
+/* ADB transaction states according to GMHW */
+#define ST_CMD 0x00 /* ADB state: command byte */
+#define ST_EVEN 0x10 /* ADB state: even data byte */
+#define ST_ODD 0x20 /* ADB state: odd data byte */
+#define ST_IDLE 0x30 /* ADB state: idle, nothing to send */
+
+static int macii_init_via(void);
+static void macii_start(void);
+static irqreturn_t macii_interrupt(int irq, void *arg, struct pt_regs *regs);
+static void macii_retransmit(int);
+static void macii_queue_poll(void);
+
+static int macii_probe(void);
+static int macii_init(void);
+static int macii_send_request(struct adb_request *req, int sync);
+static int macii_write(struct adb_request *req);
+static int macii_autopoll(int devs);
+static void macii_poll(void);
+static int macii_reset_bus(void);
+
+struct adb_driver via_macii_driver = {
+ "Mac II",
+ macii_probe,
+ macii_init,
+ macii_send_request,
+ macii_autopoll,
+ macii_poll,
+ macii_reset_bus
+};
+
+static enum macii_state {
+ idle,
+ sending,
+ reading,
+ read_done,
+ awaiting_reply
+} macii_state;
+
+static int need_poll = 0;
+static int command_byte = 0;
+static int last_reply = 0;
+static int last_active = 0;
+
+static struct adb_request *current_req;
+static struct adb_request *last_req;
+static struct adb_request *retry_req;
+static unsigned char reply_buf[16];
+static unsigned char *reply_ptr;
+static int reply_len;
+static int reading_reply;
+static int data_index;
+static int first_byte;
+static int prefix_len;
+static int status = ST_IDLE|TREQ;
+static int last_status;
+static int driver_running = 0;
+
+/* debug level 10 required for ADB logging (should be && debug_adb, ideally) */
+
+/* Check for MacII style ADB */
+static int macii_probe(void)
+{
+ if (macintosh_config->adb_type != MAC_ADB_II) return -ENODEV;
+
+ via = via1;
+
+ printk("adb: Mac II ADB Driver v1.0 for Unified ADB\n");
+ return 0;
+}
+
+/* Initialize the driver */
+int macii_init(void)
+{
+ unsigned long flags;
+ int err;
+
+ local_irq_save(flags);
+
+ err = macii_init_via();
+ if (err) return err;
+
+ err = request_irq(IRQ_MAC_ADB, macii_interrupt, IRQ_FLG_LOCK, "ADB",
+ macii_interrupt);
+ if (err) return err;
+
+ macii_state = idle;
+ local_irq_restore(flags);
+ return 0;
+}
+
+/* initialize the hardware */
+static int macii_init_via(void)
+{
+ unsigned char x;
+
+ /* Set the lines up. We want TREQ as input TACK|TIP as output */
+ via[DIRB] = (via[DIRB] | TACK | TIP) & ~TREQ;
+
+ /* Set up state: idle */
+ via[B] |= ST_IDLE;
+ last_status = via[B] & (ST_MASK|TREQ);
+
+ /* Shift register on input */
+ via[ACR] = (via[ACR] & ~SR_CTRL) | SR_EXT;
+
+ /* Wipe any pending data and int */
+ x = via[SR];
+
+ return 0;
+}
+
+/* Send an ADB poll (Talk Register 0 command, tagged on the front of the request queue) */
+static void macii_queue_poll(void)
+{
+ static int device = 0;
+ static int in_poll=0;
+ static struct adb_request req;
+ unsigned long flags;
+
+ if (in_poll) printk("macii_queue_poll: double poll!\n");
+
+ in_poll++;
+ if (++device > 15) device = 1;
+
+ adb_request(&req, NULL, ADBREQ_REPLY|ADBREQ_NOSEND, 1,
+ ADB_READREG(device, 0));
+
+ local_irq_save(flags);
+
+ req.next = current_req;
+ current_req = &req;
+
+ local_irq_restore(flags);
+ macii_start();
+ in_poll--;
+}
+
+/* Send an ADB retransmit (Talk, appended to the request queue) */
+static void macii_retransmit(int device)
+{
+ static int in_retransmit = 0;
+ static struct adb_request rt;
+ unsigned long flags;
+
+ if (in_retransmit) printk("macii_retransmit: double retransmit!\n");
+
+ in_retransmit++;
+
+ adb_request(&rt, NULL, ADBREQ_REPLY|ADBREQ_NOSEND, 1,
+ ADB_READREG(device, 0));
+
+ local_irq_save(flags);
+
+ if (current_req != NULL) {
+ last_req->next = &rt;
+ last_req = &rt;
+ } else {
+ current_req = &rt;
+ last_req = &rt;
+ }
+
+ if (macii_state == idle) macii_start();
+
+ local_irq_restore(flags);
+ in_retransmit--;
+}
+
+/* Send an ADB request; if sync, poll out the reply 'till it's done */
+static int macii_send_request(struct adb_request *req, int sync)
+{
+ int i;
+
+ i = macii_write(req);
+ if (i) return i;
+
+ if (sync) {
+ while (!req->complete) macii_poll();
+ }
+ return 0;
+}
+
+/* Send an ADB request */
+static int macii_write(struct adb_request *req)
+{
+ unsigned long flags;
+
+ if (req->nbytes < 2 || req->data[0] != ADB_PACKET || req->nbytes > 15) {
+ req->complete = 1;
+ return -EINVAL;
+ }
+
+ req->next = 0;
+ req->sent = 0;
+ req->complete = 0;
+ req->reply_len = 0;
+
+ local_irq_save(flags);
+
+ if (current_req != NULL) {
+ last_req->next = req;
+ last_req = req;
+ } else {
+ current_req = req;
+ last_req = req;
+ if (macii_state == idle) macii_start();
+ }
+
+ local_irq_restore(flags);
+ return 0;
+}
+
+/* Start auto-polling */
+static int macii_autopoll(int devs)
+{
+ /* Just ping a random default address */
+ if (!(current_req || retry_req))
+ macii_retransmit( (last_active < 16 && last_active > 0) ? last_active : 3);
+ return 0;
+}
+
+/* Prod the chip without interrupts */
+static void macii_poll(void)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ if (via[IFR] & SR_INT) macii_interrupt(0, 0, 0);
+ local_irq_restore(flags);
+}
+
+/* Reset the bus */
+static int macii_reset_bus(void)
+{
+ static struct adb_request req;
+
+ /* Command = 0, Address = ignored */
+ adb_request(&req, NULL, 0, 1, ADB_BUSRESET);
+
+ return 0;
+}
+
+/* Start sending ADB packet */
+static void macii_start(void)
+{
+ unsigned long flags;
+ struct adb_request *req;
+
+ req = current_req;
+ if (!req) return;
+
+ /* assert macii_state == idle */
+ if (macii_state != idle) {
+ printk("macii_start: called while driver busy (%p %x %x)!\n",
+ req, macii_state, (uint) via1[B] & (ST_MASK|TREQ));
+ return;
+ }
+
+ local_irq_save(flags);
+
+ /*
+ * IRQ signaled ?? (means ADB controller wants to send, or might
+ * be end of packet if we were reading)
+ */
+#if 0 /* FIXME: This is broke broke broke, for some reason */
+ if ((via[B] & TREQ) == 0) {
+ printk("macii_start: weird poll stuff. huh?\n");
+ /*
+ * FIXME - we need to restart this on a timer
+ * or a collision at boot hangs us.
+ * Never set macii_state to idle here, or macii_start
+ * won't be called again from send_request!
+ * (need to re-check other cases ...)
+ */
+ /*
+ * if the interrupt handler set the need_poll
+ * flag, it's hopefully a SRQ poll or re-Talk
+ * so we try to send here anyway
+ */
+ if (!need_poll) {
+ if (console_loglevel == 10)
+ printk("macii_start: device busy - retry %p state %d status %x!\n",
+ req, macii_state,
+ (uint) via[B] & (ST_MASK|TREQ));
+ retry_req = req;
+ /* set ADB status here ? */
+ local_irq_restore(flags);
+ return;
+ } else {
+ need_poll = 0;
+ }
+ }
+#endif
+ /*
+ * Another retry pending? (sanity check)
+ */
+ if (retry_req) {
+ retry_req = NULL;
+ }
+
+ /* Now send it. Be careful though, that first byte of the request */
+ /* is actually ADB_PACKET; the real data begins at index 1! */
+
+ /* store command byte */
+ command_byte = req->data[1];
+ /* Output mode */
+ via[ACR] |= SR_OUT;
+ /* Load data */
+ via[SR] = req->data[1];
+ /* set ADB state to 'command' */
+ via[B] = (via[B] & ~ST_MASK) | ST_CMD;
+
+ macii_state = sending;
+ data_index = 2;
+
+ local_irq_restore(flags);
+}
+
+/*
+ * The notorious ADB interrupt handler - does all of the protocol handling,
+ * except for starting new send operations. Relies heavily on the ADB
+ * controller sending and receiving data, thereby generating SR interrupts
+ * for us. This means there has to be always activity on the ADB bus, otherwise
+ * the whole process dies and has to be re-kicked by sending TALK requests ...
+ * CUDA-based Macs seem to solve this with the autopoll option, for MacII-type
+ * ADB the problem isn't solved yet (retransmit of the latest active TALK seems
+ * a good choice; either on timeout or on a timer interrupt).
+ *
+ * The basic ADB state machine was left unchanged from the original MacII code
+ * by Alan Cox, which was based on the CUDA driver for PowerMac.
+ * The syntax of the ADB status lines seems to be totally different on MacII,
+ * though. MacII uses the states Command -> Even -> Odd -> Even ->...-> Idle for
+ * sending, and Idle -> Even -> Odd -> Even ->...-> Idle for receiving. Start
+ * and end of a receive packet are signaled by asserting /IRQ on the interrupt
+ * line. Timeouts are signaled by a sequence of 4 0xFF, with /IRQ asserted on
+ * every other byte. SRQ is probably signaled by 3 or more 0xFF tacked on the
+ * end of a packet. (Thanks to Guido Koerber for eavesdropping on the ADB
+ * protocol with a logic analyzer!!)
+ *
+ * Note: As of 21/10/97, the MacII ADB part works including timeout detection
+ * and retransmit (Talk to the last active device).
+ */
+static irqreturn_t macii_interrupt(int irq, void *arg, struct pt_regs *regs)
+{
+ int x, adbdir;
+ unsigned long flags;
+ struct adb_request *req;
+
+ last_status = status;
+
+ /* prevent races due to SCSI enabling ints */
+ local_irq_save(flags);
+
+ if (driver_running) {
+ local_irq_restore(flags);
+ return IRQ_NONE;
+ }
+
+ driver_running = 1;
+
+ status = via[B] & (ST_MASK|TREQ);
+ adbdir = via[ACR] & SR_OUT;
+
+ switch (macii_state) {
+ case idle:
+ x = via[SR];
+ first_byte = x;
+ /* set ADB state = even for first data byte */
+ via[B] = (via[B] & ~ST_MASK) | ST_EVEN;
+
+ reply_buf[0] = first_byte; /* was command_byte?? */
+ reply_ptr = reply_buf + 1;
+ reply_len = 1;
+ prefix_len = 1;
+ reading_reply = 0;
+
+ macii_state = reading;
+ break;
+
+ case awaiting_reply:
+ /* handshake etc. for II ?? */
+ x = via[SR];
+ first_byte = x;
+ /* set ADB state = even for first data byte */
+ via[B] = (via[B] & ~ST_MASK) | ST_EVEN;
+
+ current_req->reply[0] = first_byte;
+ reply_ptr = current_req->reply + 1;
+ reply_len = 1;
+ prefix_len = 1;
+ reading_reply = 1;
+
+ macii_state = reading;
+ break;
+
+ case sending:
+ req = current_req;
+ if (data_index >= req->nbytes) {
+ /* print an error message if a listen command has no data */
+ if (((command_byte & 0x0C) == 0x08)
+ /* && (console_loglevel == 10) */
+ && (data_index == 2))
+ printk("MacII ADB: listen command with no data: %x!\n",
+ command_byte);
+ /* reset to shift in */
+ via[ACR] &= ~SR_OUT;
+ x = via[SR];
+ /* set ADB state idle - might get SRQ */
+ via[B] = (via[B] & ~ST_MASK) | ST_IDLE;
+
+ req->sent = 1;
+
+ if (req->reply_expected) {
+ macii_state = awaiting_reply;
+ } else {
+ req->complete = 1;
+ current_req = req->next;
+ if (req->done) (*req->done)(req);
+ macii_state = idle;
+ if (current_req || retry_req)
+ macii_start();
+ else
+ macii_retransmit((command_byte & 0xF0) >> 4);
+ }
+ } else {
+ via[SR] = req->data[data_index++];
+
+ if ( (via[B] & ST_MASK) == ST_CMD ) {
+ /* just sent the command byte, set to EVEN */
+ via[B] = (via[B] & ~ST_MASK) | ST_EVEN;
+ } else {
+ /* invert state bits, toggle ODD/EVEN */
+ via[B] ^= ST_MASK;
+ }
+ }
+ break;
+
+ case reading:
+
+ /* timeout / SRQ handling for II hw */
+ if( (first_byte == 0xFF && (reply_len-prefix_len)==2
+ && memcmp(reply_ptr-2,"\xFF\xFF",2)==0) ||
+ ((reply_len-prefix_len)==3
+ && memcmp(reply_ptr-3,"\xFF\xFF\xFF",3)==0))
+ {
+ /*
+ * possible timeout (in fact, most probably a
+ * timeout, since SRQ can't be signaled without
+ * transfer on the bus).
+ * The last three bytes seen were FF, together
+ * with the starting byte (in case we started
+ * on 'idle' or 'awaiting_reply') this probably
+ * makes four. So this is mostl likely #5!
+ * The timeout signal is a pattern 1 0 1 0 0..
+ * on /INT, meaning we missed it :-(
+ */
+ x = via[SR];
+ if (x != 0xFF) printk("MacII ADB: mistaken timeout/SRQ!\n");
+
+ if ((status & TREQ) == (last_status & TREQ)) {
+ /* Not a timeout. Unsolicited SRQ? weird. */
+ /* Terminate the SRQ packet and poll */
+ need_poll = 1;
+ }
+ /* There's no packet to get, so reply is blank */
+ via[B] ^= ST_MASK;
+ reply_ptr -= (reply_len-prefix_len);
+ reply_len = prefix_len;
+ macii_state = read_done;
+ break;
+ } /* end timeout / SRQ handling for II hw. */
+
+ if((reply_len-prefix_len)>3
+ && memcmp(reply_ptr-3,"\xFF\xFF\xFF",3)==0)
+ {
+ /* SRQ tacked on data packet */
+ /* Terminate the packet (SRQ never ends) */
+ x = via[SR];
+ macii_state = read_done;
+ reply_len -= 3;
+ reply_ptr -= 3;
+ need_poll = 1;
+ /* need to continue; next byte not seen else */
+ } else {
+ /* Sanity check */
+ if (reply_len > 15) reply_len = 0;
+ /* read byte */
+ x = via[SR];
+ *reply_ptr = x;
+ reply_ptr++;
+ reply_len++;
+ }
+ /* The usual handshake ... */
+
+ /*
+ * NetBSD hints that the next to last byte
+ * is sent with IRQ !!
+ * Guido found out it's the last one (0x0),
+ * but IRQ should be asserted already.
+ * Problem with timeout detection: First
+ * transition to /IRQ might be second
+ * byte of timeout packet!
+ * Timeouts are signaled by 4x FF.
+ */
+ if (((status & TREQ) == 0) && (x == 0x00)) { /* != 0xFF */
+ /* invert state bits, toggle ODD/EVEN */
+ via[B] ^= ST_MASK;
+
+ /* adjust packet length */
+ reply_len--;
+ reply_ptr--;
+ macii_state = read_done;
+ } else {
+ /* not caught: ST_CMD */
+ /* required for re-entry 'reading'! */
+ if ((status & ST_MASK) == ST_IDLE) {
+ /* (in)sanity check - set even */
+ via[B] = (via[B] & ~ST_MASK) | ST_EVEN;
+ } else {
+ /* invert state bits */
+ via[B] ^= ST_MASK;
+ }
+ }
+ break;
+
+ case read_done:
+ x = via[SR];
+ if (reading_reply) {
+ req = current_req;
+ req->reply_len = reply_ptr - req->reply;
+ req->complete = 1;
+ current_req = req->next;
+ if (req->done) (*req->done)(req);
+ } else {
+ adb_input(reply_buf, reply_ptr - reply_buf,
+ regs, 0);
+ }
+
+ /*
+ * remember this device ID; it's the latest we got a
+ * reply from!
+ */
+ last_reply = command_byte;
+ last_active = (command_byte & 0xF0) >> 4;
+
+ /* SRQ seen before, initiate poll now */
+ if (need_poll) {
+ macii_state = idle;
+ macii_queue_poll();
+ need_poll = 0;
+ break;
+ }
+
+ /* set ADB state to idle */
+ via[B] = (via[B] & ~ST_MASK) | ST_IDLE;
+
+ /* /IRQ seen, so the ADB controller has data for us */
+ if ((via[B] & TREQ) != 0) {
+ macii_state = reading;
+
+ reply_buf[0] = command_byte;
+ reply_ptr = reply_buf + 1;
+ reply_len = 1;
+ prefix_len = 1;
+ reading_reply = 0;
+ } else {
+ /* no IRQ, send next packet or wait */
+ macii_state = idle;
+ if (current_req)
+ macii_start();
+ else
+ macii_retransmit(last_active);
+ }
+ break;
+
+ default:
+ break;
+ }
+ /* reset mutex and interrupts */
+ driver_running = 0;
+ local_irq_restore(flags);
+ return IRQ_HANDLED;
+}
diff --git a/drivers/macintosh/via-maciisi.c b/drivers/macintosh/via-maciisi.c
new file mode 100644
index 000000000000..a1966975d58f
--- /dev/null
+++ b/drivers/macintosh/via-maciisi.c
@@ -0,0 +1,661 @@
+/*
+ * Device driver for the IIsi-style ADB on some Mac LC and II-class machines
+ *
+ * Based on via-cuda.c and via-macii.c, as well as the original
+ * adb-bus.c, which in turn is somewhat influenced by (but uses no
+ * code from) the NetBSD HWDIRECT ADB code. Original IIsi driver work
+ * was done by Robert Thompson and integrated into the old style
+ * driver by Michael Schmitz.
+ *
+ * Original sources (c) Alan Cox, Paul Mackerras, and others.
+ *
+ * Rewritten for Unified ADB by David Huggins-Daines <dhd@debian.org>
+ *
+ * 7/13/2000- extensive changes by Andrew McPherson <andrew@macduff.dhs.org>
+ * Works about 30% of the time now.
+ */
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/adb.h>
+#include <linux/cuda.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <asm/macintosh.h>
+#include <asm/macints.h>
+#include <asm/machw.h>
+#include <asm/mac_via.h>
+
+static volatile unsigned char *via;
+
+/* VIA registers - spaced 0x200 bytes apart - only the ones we actually use */
+#define RS 0x200 /* skip between registers */
+#define B 0 /* B-side data */
+#define A RS /* A-side data */
+#define DIRB (2*RS) /* B-side direction (1=output) */
+#define DIRA (3*RS) /* A-side direction (1=output) */
+#define SR (10*RS) /* Shift register */
+#define ACR (11*RS) /* Auxiliary control register */
+#define IFR (13*RS) /* Interrupt flag register */
+#define IER (14*RS) /* Interrupt enable register */
+
+/* Bits in B data register: all active low */
+#define TREQ 0x08 /* Transfer request (input) */
+#define TACK 0x10 /* Transfer acknowledge (output) */
+#define TIP 0x20 /* Transfer in progress (output) */
+#define ST_MASK 0x30 /* mask for selecting ADB state bits */
+
+/* Bits in ACR */
+#define SR_CTRL 0x1c /* Shift register control bits */
+#define SR_EXT 0x0c /* Shift on external clock */
+#define SR_OUT 0x10 /* Shift out if 1 */
+
+/* Bits in IFR and IER */
+#define IER_SET 0x80 /* set bits in IER */
+#define IER_CLR 0 /* clear bits in IER */
+#define SR_INT 0x04 /* Shift register full/empty */
+#define SR_DATA 0x08 /* Shift register data */
+#define SR_CLOCK 0x10 /* Shift register clock */
+
+#define ADB_DELAY 150
+
+#undef DEBUG_MACIISI_ADB
+
+static struct adb_request* current_req = NULL;
+static struct adb_request* last_req = NULL;
+static unsigned char maciisi_rbuf[16];
+static unsigned char *reply_ptr = NULL;
+static int data_index;
+static int reading_reply;
+static int reply_len;
+static int tmp;
+static int need_sync;
+
+static enum maciisi_state {
+ idle,
+ sending,
+ reading,
+} maciisi_state;
+
+static int maciisi_probe(void);
+static int maciisi_init(void);
+static int maciisi_send_request(struct adb_request* req, int sync);
+static void maciisi_sync(struct adb_request *req);
+static int maciisi_write(struct adb_request* req);
+static irqreturn_t maciisi_interrupt(int irq, void* arg, struct pt_regs* regs);
+static void maciisi_input(unsigned char *buf, int nb, struct pt_regs *regs);
+static int maciisi_init_via(void);
+static void maciisi_poll(void);
+static int maciisi_start(void);
+
+struct adb_driver via_maciisi_driver = {
+ "Mac IIsi",
+ maciisi_probe,
+ maciisi_init,
+ maciisi_send_request,
+ NULL, /* maciisi_adb_autopoll, */
+ maciisi_poll,
+ NULL /* maciisi_reset_adb_bus */
+};
+
+static int
+maciisi_probe(void)
+{
+ if (macintosh_config->adb_type != MAC_ADB_IISI)
+ return -ENODEV;
+
+ via = via1;
+ return 0;
+}
+
+static int
+maciisi_init(void)
+{
+ int err;
+
+ if (via == NULL)
+ return -ENODEV;
+
+ if ((err = maciisi_init_via())) {
+ printk(KERN_ERR "maciisi_init: maciisi_init_via() failed, code %d\n", err);
+ via = NULL;
+ return err;
+ }
+
+ if (request_irq(IRQ_MAC_ADB, maciisi_interrupt, IRQ_FLG_LOCK | IRQ_FLG_FAST,
+ "ADB", maciisi_interrupt)) {
+ printk(KERN_ERR "maciisi_init: can't get irq %d\n", IRQ_MAC_ADB);
+ return -EAGAIN;
+ }
+
+ printk("adb: Mac IIsi driver v0.2 for Unified ADB.\n");
+ return 0;
+}
+
+/* Flush data from the ADB controller */
+static void
+maciisi_stfu(void)
+{
+ int status = via[B] & (TIP|TREQ);
+
+ if (status & TREQ) {
+#ifdef DEBUG_MACIISI_ADB
+ printk (KERN_DEBUG "maciisi_stfu called with TREQ high!\n");
+#endif
+ return;
+ }
+
+ udelay(ADB_DELAY);
+ via[ACR] &= ~SR_OUT;
+ via[IER] = IER_CLR | SR_INT;
+
+ udelay(ADB_DELAY);
+
+ status = via[B] & (TIP|TREQ);
+
+ if (!(status & TREQ))
+ {
+ via[B] |= TIP;
+
+ while(1)
+ {
+ int poll_timeout = ADB_DELAY * 5;
+ /* Poll for SR interrupt */
+ while (!(via[IFR] & SR_INT) && poll_timeout-- > 0)
+ status = via[B] & (TIP|TREQ);
+
+ tmp = via[SR]; /* Clear shift register */
+#ifdef DEBUG_MACIISI_ADB
+ printk(KERN_DEBUG "maciisi_stfu: status %x timeout %d data %x\n",
+ status, poll_timeout, tmp);
+#endif
+ if(via[B] & TREQ)
+ break;
+
+ /* ACK on-off */
+ via[B] |= TACK;
+ udelay(ADB_DELAY);
+ via[B] &= ~TACK;
+ }
+
+ /* end frame */
+ via[B] &= ~TIP;
+ udelay(ADB_DELAY);
+ }
+
+ via[IER] = IER_SET | SR_INT;
+}
+
+/* All specifically VIA-related initialization goes here */
+static int
+maciisi_init_via(void)
+{
+ int i;
+
+ /* Set the lines up. We want TREQ as input TACK|TIP as output */
+ via[DIRB] = (via[DIRB] | TACK | TIP) & ~TREQ;
+ /* Shift register on input */
+ via[ACR] = (via[ACR] & ~SR_CTRL) | SR_EXT;
+#ifdef DEBUG_MACIISI_ADB
+ printk(KERN_DEBUG "maciisi_init_via: initial status %x\n", via[B] & (TIP|TREQ));
+#endif
+ /* Wipe any pending data and int */
+ tmp = via[SR];
+ /* Enable keyboard interrupts */
+ via[IER] = IER_SET | SR_INT;
+ /* Set initial state: idle */
+ via[B] &= ~(TACK|TIP);
+ /* Clear interrupt bit */
+ via[IFR] = SR_INT;
+
+ for(i = 0; i < 60; i++) {
+ udelay(ADB_DELAY);
+ maciisi_stfu();
+ udelay(ADB_DELAY);
+ if(via[B] & TREQ)
+ break;
+ }
+ if (i == 60)
+ printk(KERN_ERR "maciisi_init_via: bus jam?\n");
+
+ maciisi_state = idle;
+ need_sync = 0;
+
+ return 0;
+}
+
+/* Send a request, possibly waiting for a reply */
+static int
+maciisi_send_request(struct adb_request* req, int sync)
+{
+ int i;
+
+#ifdef DEBUG_MACIISI_ADB
+ static int dump_packet = 0;
+#endif
+
+ if (via == NULL) {
+ req->complete = 1;
+ return -ENXIO;
+ }
+
+#ifdef DEBUG_MACIISI_ADB
+ if (dump_packet) {
+ printk(KERN_DEBUG "maciisi_send_request:");
+ for (i = 0; i < req->nbytes; i++) {
+ printk(" %.2x", req->data[i]);
+ }
+ printk(" sync %d\n", sync);
+ }
+#endif
+
+ req->reply_expected = 1;
+
+ i = maciisi_write(req);
+ if (i)
+ {
+ /* Normally, if a packet requires syncing, that happens at the end of
+ * maciisi_send_request. But if the transfer fails, it will be restarted
+ * by maciisi_interrupt(). We use need_sync to tell maciisi_interrupt
+ * when to sync a packet that it sends out.
+ *
+ * Suggestions on a better way to do this are welcome.
+ */
+ if(i == -EBUSY && sync)
+ need_sync = 1;
+ else
+ need_sync = 0;
+ return i;
+ }
+ if(sync)
+ maciisi_sync(req);
+
+ return 0;
+}
+
+/* Poll the ADB chip until the request completes */
+static void maciisi_sync(struct adb_request *req)
+{
+ int count = 0;
+
+#ifdef DEBUG_MACIISI_ADB
+ printk(KERN_DEBUG "maciisi_sync called\n");
+#endif
+
+ /* If for some reason the ADB chip shuts up on us, we want to avoid an endless loop. */
+ while (!req->complete && count++ < 50) {
+ maciisi_poll();
+ }
+ /* This could be BAD... when the ADB controller doesn't respond
+ * for this long, it's probably not coming back :-( */
+ if(count >= 50) /* Hopefully shouldn't happen */
+ printk(KERN_ERR "maciisi_send_request: poll timed out!\n");
+}
+
+/* Enqueue a request, and run the queue if possible */
+static int
+maciisi_write(struct adb_request* req)
+{
+ unsigned long flags;
+ int i;
+
+ /* We will accept CUDA packets - the VIA sends them to us, so
+ it figures that we should be able to send them to it */
+ if (req->nbytes < 2 || req->data[0] > CUDA_PACKET) {
+ printk(KERN_ERR "maciisi_write: packet too small or not an ADB or CUDA packet\n");
+ req->complete = 1;
+ return -EINVAL;
+ }
+ req->next = 0;
+ req->sent = 0;
+ req->complete = 0;
+ req->reply_len = 0;
+
+ local_irq_save(flags);
+
+ if (current_req) {
+ last_req->next = req;
+ last_req = req;
+ } else {
+ current_req = req;
+ last_req = req;
+ }
+ if (maciisi_state == idle)
+ {
+ i = maciisi_start();
+ if(i != 0)
+ {
+ local_irq_restore(flags);
+ return i;
+ }
+ }
+ else
+ {
+#ifdef DEBUG_MACIISI_ADB
+ printk(KERN_DEBUG "maciisi_write: would start, but state is %d\n", maciisi_state);
+#endif
+ local_irq_restore(flags);
+ return -EBUSY;
+ }
+
+ local_irq_restore(flags);
+
+ return 0;
+}
+
+static int
+maciisi_start(void)
+{
+ struct adb_request* req;
+ int status;
+
+#ifdef DEBUG_MACIISI_ADB
+ status = via[B] & (TIP | TREQ);
+
+ printk(KERN_DEBUG "maciisi_start called, state=%d, status=%x, ifr=%x\n", maciisi_state, status, via[IFR]);
+#endif
+
+ if (maciisi_state != idle) {
+ /* shouldn't happen */
+ printk(KERN_ERR "maciisi_start: maciisi_start called when driver busy!\n");
+ return -EBUSY;
+ }
+
+ req = current_req;
+ if (req == NULL)
+ return -EINVAL;
+
+ status = via[B] & (TIP|TREQ);
+ if (!(status & TREQ)) {
+#ifdef DEBUG_MACIISI_ADB
+ printk(KERN_DEBUG "maciisi_start: bus busy - aborting\n");
+#endif
+ return -EBUSY;
+ }
+
+ /* Okay, send */
+#ifdef DEBUG_MACIISI_ADB
+ printk(KERN_DEBUG "maciisi_start: sending\n");
+#endif
+ /* Set state to active */
+ via[B] |= TIP;
+ /* ACK off */
+ via[B] &= ~TACK;
+ /* Delay */
+ udelay(ADB_DELAY);
+ /* Shift out and send */
+ via[ACR] |= SR_OUT;
+ via[SR] = req->data[0];
+ data_index = 1;
+ /* ACK on */
+ via[B] |= TACK;
+ maciisi_state = sending;
+
+ return 0;
+}
+
+void
+maciisi_poll(void)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ if (via[IFR] & SR_INT) {
+ maciisi_interrupt(0, 0, 0);
+ }
+ else /* avoid calling this function too quickly in a loop */
+ udelay(ADB_DELAY);
+
+ local_irq_restore(flags);
+}
+
+/* Shift register interrupt - this is *supposed* to mean that the
+ register is either full or empty. In practice, I have no idea what
+ it means :( */
+static irqreturn_t
+maciisi_interrupt(int irq, void* arg, struct pt_regs* regs)
+{
+ int status;
+ struct adb_request *req;
+#ifdef DEBUG_MACIISI_ADB
+ static int dump_reply = 0;
+#endif
+ int i;
+ unsigned long flags;
+
+ local_irq_save(flags);
+
+ status = via[B] & (TIP|TREQ);
+#ifdef DEBUG_MACIISI_ADB
+ printk(KERN_DEBUG "state %d status %x ifr %x\n", maciisi_state, status, via[IFR]);
+#endif
+
+ if (!(via[IFR] & SR_INT)) {
+ /* Shouldn't happen, we hope */
+ printk(KERN_ERR "maciisi_interrupt: called without interrupt flag set\n");
+ local_irq_restore(flags);
+ return IRQ_NONE;
+ }
+
+ /* Clear the interrupt */
+ /* via[IFR] = SR_INT; */
+
+ switch_start:
+ switch (maciisi_state) {
+ case idle:
+ if (status & TIP)
+ printk(KERN_ERR "maciisi_interrupt: state is idle but TIP asserted!\n");
+
+ if(!reading_reply)
+ udelay(ADB_DELAY);
+ /* Shift in */
+ via[ACR] &= ~SR_OUT;
+ /* Signal start of frame */
+ via[B] |= TIP;
+ /* Clear the interrupt (throw this value on the floor, it's useless) */
+ tmp = via[SR];
+ /* ACK adb chip, high-low */
+ via[B] |= TACK;
+ udelay(ADB_DELAY);
+ via[B] &= ~TACK;
+ reply_len = 0;
+ maciisi_state = reading;
+ if (reading_reply) {
+ reply_ptr = current_req->reply;
+ } else {
+ reply_ptr = maciisi_rbuf;
+ }
+ break;
+
+ case sending:
+ /* via[SR]; */
+ /* Set ACK off */
+ via[B] &= ~TACK;
+ req = current_req;
+
+ if (!(status & TREQ)) {
+ /* collision */
+ printk(KERN_ERR "maciisi_interrupt: send collision\n");
+ /* Set idle and input */
+ via[ACR] &= ~SR_OUT;
+ tmp = via[SR];
+ via[B] &= ~TIP;
+ /* Must re-send */
+ reading_reply = 0;
+ reply_len = 0;
+ maciisi_state = idle;
+ udelay(ADB_DELAY);
+ /* process this now, because the IFR has been cleared */
+ goto switch_start;
+ }
+
+ udelay(ADB_DELAY);
+
+ if (data_index >= req->nbytes) {
+ /* Sent the whole packet, put the bus back in idle state */
+ /* Shift in, we are about to read a reply (hopefully) */
+ via[ACR] &= ~SR_OUT;
+ tmp = via[SR];
+ /* End of frame */
+ via[B] &= ~TIP;
+ req->sent = 1;
+ maciisi_state = idle;
+ if (req->reply_expected) {
+ /* Note: only set this once we've
+ successfully sent the packet */
+ reading_reply = 1;
+ } else {
+ current_req = req->next;
+ if (req->done)
+ (*req->done)(req);
+ /* Do any queued requests now */
+ i = maciisi_start();
+ if(i == 0 && need_sync) {
+ /* Packet needs to be synced */
+ maciisi_sync(current_req);
+ }
+ if(i != -EBUSY)
+ need_sync = 0;
+ }
+ } else {
+ /* Sending more stuff */
+ /* Shift out */
+ via[ACR] |= SR_OUT;
+ /* Write */
+ via[SR] = req->data[data_index++];
+ /* Signal 'byte ready' */
+ via[B] |= TACK;
+ }
+ break;
+
+ case reading:
+ /* Shift in */
+ /* via[ACR] &= ~SR_OUT; */ /* Not in 2.2 */
+ if (reply_len++ > 16) {
+ printk(KERN_ERR "maciisi_interrupt: reply too long, aborting read\n");
+ via[B] |= TACK;
+ udelay(ADB_DELAY);
+ via[B] &= ~(TACK|TIP);
+ maciisi_state = idle;
+ i = maciisi_start();
+ if(i == 0 && need_sync) {
+ /* Packet needs to be synced */
+ maciisi_sync(current_req);
+ }
+ if(i != -EBUSY)
+ need_sync = 0;
+ break;
+ }
+ /* Read data */
+ *reply_ptr++ = via[SR];
+ status = via[B] & (TIP|TREQ);
+ /* ACK on/off */
+ via[B] |= TACK;
+ udelay(ADB_DELAY);
+ via[B] &= ~TACK;
+ if (!(status & TREQ))
+ break; /* more stuff to deal with */
+
+ /* end of frame */
+ via[B] &= ~TIP;
+ tmp = via[SR]; /* That's what happens in 2.2 */
+ udelay(ADB_DELAY); /* Give controller time to recover */
+
+ /* end of packet, deal with it */
+ if (reading_reply) {
+ req = current_req;
+ req->reply_len = reply_ptr - req->reply;
+ if (req->data[0] == ADB_PACKET) {
+ /* Have to adjust the reply from ADB commands */
+ if (req->reply_len <= 2 || (req->reply[1] & 2) != 0) {
+ /* the 0x2 bit indicates no response */
+ req->reply_len = 0;
+ } else {
+ /* leave just the command and result bytes in the reply */
+ req->reply_len -= 2;
+ memmove(req->reply, req->reply + 2, req->reply_len);
+ }
+ }
+#ifdef DEBUG_MACIISI_ADB
+ if (dump_reply) {
+ int i;
+ printk(KERN_DEBUG "maciisi_interrupt: reply is ");
+ for (i = 0; i < req->reply_len; ++i)
+ printk(" %.2x", req->reply[i]);
+ printk("\n");
+ }
+#endif
+ req->complete = 1;
+ current_req = req->next;
+ if (req->done)
+ (*req->done)(req);
+ /* Obviously, we got it */
+ reading_reply = 0;
+ } else {
+ maciisi_input(maciisi_rbuf, reply_ptr - maciisi_rbuf, regs);
+ }
+ maciisi_state = idle;
+ status = via[B] & (TIP|TREQ);
+ if (!(status & TREQ)) {
+ /* Timeout?! More likely, another packet coming in already */
+#ifdef DEBUG_MACIISI_ADB
+ printk(KERN_DEBUG "extra data after packet: status %x ifr %x\n",
+ status, via[IFR]);
+#endif
+#if 0
+ udelay(ADB_DELAY);
+ via[B] |= TIP;
+
+ maciisi_state = reading;
+ reading_reply = 0;
+ reply_ptr = maciisi_rbuf;
+#else
+ /* Process the packet now */
+ reading_reply = 0;
+ goto switch_start;
+#endif
+ /* We used to do this... but the controller might actually have data for us */
+ /* maciisi_stfu(); */
+ }
+ else {
+ /* Do any queued requests now if possible */
+ i = maciisi_start();
+ if(i == 0 && need_sync) {
+ /* Packet needs to be synced */
+ maciisi_sync(current_req);
+ }
+ if(i != -EBUSY)
+ need_sync = 0;
+ }
+ break;
+
+ default:
+ printk("maciisi_interrupt: unknown maciisi_state %d?\n", maciisi_state);
+ }
+ local_irq_restore(flags);
+ return IRQ_HANDLED;
+}
+
+static void
+maciisi_input(unsigned char *buf, int nb, struct pt_regs *regs)
+{
+#ifdef DEBUG_MACIISI_ADB
+ int i;
+#endif
+
+ switch (buf[0]) {
+ case ADB_PACKET:
+ adb_input(buf+2, nb-2, regs, buf[1] & 0x40);
+ break;
+ default:
+#ifdef DEBUG_MACIISI_ADB
+ printk(KERN_DEBUG "data from IIsi ADB (%d bytes):", nb);
+ for (i = 0; i < nb; ++i)
+ printk(" %.2x", buf[i]);
+ printk("\n");
+#endif
+ break;
+ }
+}
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
new file mode 100644
index 000000000000..cea1e758eb46
--- /dev/null
+++ b/drivers/macintosh/via-pmu.c
@@ -0,0 +1,3147 @@
+/*
+ * Device driver for the via-pmu on Apple Powermacs.
+ *
+ * The VIA (versatile interface adapter) interfaces to the PMU,
+ * a 6805 microprocessor core whose primary function is to control
+ * battery charging and system power on the PowerBook 3400 and 2400.
+ * The PMU also controls the ADB (Apple Desktop Bus) which connects
+ * to the keyboard and mouse, as well as the non-volatile RAM
+ * and the RTC (real time clock) chip.
+ *
+ * Copyright (C) 1998 Paul Mackerras and Fabio Riccardi.
+ * Copyright (C) 2001-2002 Benjamin Herrenschmidt
+ *
+ * THIS DRIVER IS BECOMING A TOTAL MESS !
+ * - Cleanup atomically disabling reply to PMU events after
+ * a sleep or a freq. switch
+ * - Move sleep code out of here to pmac_pm, merge into new
+ * common PM infrastructure
+ * - Move backlight code out as well
+ * - Save/Restore PCI space properly
+ *
+ */
+#include <stdarg.h>
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/miscdevice.h>
+#include <linux/blkdev.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/poll.h>
+#include <linux/adb.h>
+#include <linux/pmu.h>
+#include <linux/cuda.h>
+#include <linux/smp_lock.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/pm.h>
+#include <linux/proc_fs.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/device.h>
+#include <linux/sysdev.h>
+#include <linux/suspend.h>
+#include <linux/syscalls.h>
+#include <linux/cpu.h>
+#include <asm/prom.h>
+#include <asm/machdep.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/system.h>
+#include <asm/sections.h>
+#include <asm/irq.h>
+#include <asm/pmac_feature.h>
+#include <asm/uaccess.h>
+#include <asm/mmu_context.h>
+#include <asm/cputable.h>
+#include <asm/time.h>
+#ifdef CONFIG_PMAC_BACKLIGHT
+#include <asm/backlight.h>
+#endif
+
+/* Some compile options */
+#undef SUSPEND_USES_PMU
+#define DEBUG_SLEEP
+#undef HACKED_PCI_SAVE
+
+/* Misc minor number allocated for /dev/pmu */
+#define PMU_MINOR 154
+
+/* How many iterations between battery polls */
+#define BATTERY_POLLING_COUNT 2
+
+static volatile unsigned char __iomem *via;
+
+/* VIA registers - spaced 0x200 bytes apart */
+#define RS 0x200 /* skip between registers */
+#define B 0 /* B-side data */
+#define A RS /* A-side data */
+#define DIRB (2*RS) /* B-side direction (1=output) */
+#define DIRA (3*RS) /* A-side direction (1=output) */
+#define T1CL (4*RS) /* Timer 1 ctr/latch (low 8 bits) */
+#define T1CH (5*RS) /* Timer 1 counter (high 8 bits) */
+#define T1LL (6*RS) /* Timer 1 latch (low 8 bits) */
+#define T1LH (7*RS) /* Timer 1 latch (high 8 bits) */
+#define T2CL (8*RS) /* Timer 2 ctr/latch (low 8 bits) */
+#define T2CH (9*RS) /* Timer 2 counter (high 8 bits) */
+#define SR (10*RS) /* Shift register */
+#define ACR (11*RS) /* Auxiliary control register */
+#define PCR (12*RS) /* Peripheral control register */
+#define IFR (13*RS) /* Interrupt flag register */
+#define IER (14*RS) /* Interrupt enable register */
+#define ANH (15*RS) /* A-side data, no handshake */
+
+/* Bits in B data register: both active low */
+#define TACK 0x08 /* Transfer acknowledge (input) */
+#define TREQ 0x10 /* Transfer request (output) */
+
+/* Bits in ACR */
+#define SR_CTRL 0x1c /* Shift register control bits */
+#define SR_EXT 0x0c /* Shift on external clock */
+#define SR_OUT 0x10 /* Shift out if 1 */
+
+/* Bits in IFR and IER */
+#define IER_SET 0x80 /* set bits in IER */
+#define IER_CLR 0 /* clear bits in IER */
+#define SR_INT 0x04 /* Shift register full/empty */
+#define CB2_INT 0x08
+#define CB1_INT 0x10 /* transition on CB1 input */
+
+static volatile enum pmu_state {
+ idle,
+ sending,
+ intack,
+ reading,
+ reading_intr,
+ locked,
+} pmu_state;
+
+static volatile enum int_data_state {
+ int_data_empty,
+ int_data_fill,
+ int_data_ready,
+ int_data_flush
+} int_data_state[2] = { int_data_empty, int_data_empty };
+
+static struct adb_request *current_req;
+static struct adb_request *last_req;
+static struct adb_request *req_awaiting_reply;
+static unsigned char interrupt_data[2][32];
+static int interrupt_data_len[2];
+static int int_data_last;
+static unsigned char *reply_ptr;
+static int data_index;
+static int data_len;
+static volatile int adb_int_pending;
+static volatile int disable_poll;
+static struct adb_request bright_req_1, bright_req_2;
+static struct device_node *vias;
+static int pmu_kind = PMU_UNKNOWN;
+static int pmu_fully_inited = 0;
+static int pmu_has_adb;
+static unsigned char __iomem *gpio_reg = NULL;
+static int gpio_irq = -1;
+static int gpio_irq_enabled = -1;
+static volatile int pmu_suspended = 0;
+static spinlock_t pmu_lock;
+static u8 pmu_intr_mask;
+static int pmu_version;
+static int drop_interrupts;
+#ifdef CONFIG_PMAC_PBOOK
+static int option_lid_wakeup = 1;
+static int sleep_in_progress;
+#endif /* CONFIG_PMAC_PBOOK */
+static unsigned long async_req_locks;
+static unsigned int pmu_irq_stats[11];
+
+static struct proc_dir_entry *proc_pmu_root;
+static struct proc_dir_entry *proc_pmu_info;
+static struct proc_dir_entry *proc_pmu_irqstats;
+static struct proc_dir_entry *proc_pmu_options;
+static int option_server_mode;
+
+#ifdef CONFIG_PMAC_PBOOK
+int pmu_battery_count;
+int pmu_cur_battery;
+unsigned int pmu_power_flags;
+struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES];
+static int query_batt_timer = BATTERY_POLLING_COUNT;
+static struct adb_request batt_req;
+static struct proc_dir_entry *proc_pmu_batt[PMU_MAX_BATTERIES];
+#endif /* CONFIG_PMAC_PBOOK */
+
+#if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
+extern int disable_kernel_backlight;
+#endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
+
+int __fake_sleep;
+int asleep;
+struct notifier_block *sleep_notifier_list;
+
+#ifdef CONFIG_ADB
+static int adb_dev_map = 0;
+static int pmu_adb_flags;
+
+static int pmu_probe(void);
+static int pmu_init(void);
+static int pmu_send_request(struct adb_request *req, int sync);
+static int pmu_adb_autopoll(int devs);
+static int pmu_adb_reset_bus(void);
+#endif /* CONFIG_ADB */
+
+static int init_pmu(void);
+static int pmu_queue_request(struct adb_request *req);
+static void pmu_start(void);
+static irqreturn_t via_pmu_interrupt(int irq, void *arg, struct pt_regs *regs);
+static irqreturn_t gpio1_interrupt(int irq, void *arg, struct pt_regs *regs);
+static int proc_get_info(char *page, char **start, off_t off,
+ int count, int *eof, void *data);
+static int proc_get_irqstats(char *page, char **start, off_t off,
+ int count, int *eof, void *data);
+#ifdef CONFIG_PMAC_BACKLIGHT
+static int pmu_set_backlight_level(int level, void* data);
+static int pmu_set_backlight_enable(int on, int level, void* data);
+#endif /* CONFIG_PMAC_BACKLIGHT */
+#ifdef CONFIG_PMAC_PBOOK
+static void pmu_pass_intr(unsigned char *data, int len);
+static int proc_get_batt(char *page, char **start, off_t off,
+ int count, int *eof, void *data);
+#endif /* CONFIG_PMAC_PBOOK */
+static int proc_read_options(char *page, char **start, off_t off,
+ int count, int *eof, void *data);
+static int proc_write_options(struct file *file, const char __user *buffer,
+ unsigned long count, void *data);
+
+#ifdef CONFIG_ADB
+struct adb_driver via_pmu_driver = {
+ "PMU",
+ pmu_probe,
+ pmu_init,
+ pmu_send_request,
+ pmu_adb_autopoll,
+ pmu_poll_adb,
+ pmu_adb_reset_bus
+};
+#endif /* CONFIG_ADB */
+
+extern void low_sleep_handler(void);
+extern void enable_kernel_altivec(void);
+extern void enable_kernel_fp(void);
+
+#ifdef DEBUG_SLEEP
+int pmu_polled_request(struct adb_request *req);
+int pmu_wink(struct adb_request *req);
+#endif
+
+/*
+ * This table indicates for each PMU opcode:
+ * - the number of data bytes to be sent with the command, or -1
+ * if a length byte should be sent,
+ * - the number of response bytes which the PMU will return, or
+ * -1 if it will send a length byte.
+ */
+static const s8 pmu_data_len[256][2] __openfirmwaredata = {
+/* 0 1 2 3 4 5 6 7 */
+/*00*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*08*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
+/*10*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*18*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0, 0},
+/*20*/ {-1, 0},{ 0, 0},{ 2, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*28*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0,-1},
+/*30*/ { 4, 0},{20, 0},{-1, 0},{ 3, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*38*/ { 0, 4},{ 0,20},{ 2,-1},{ 2, 1},{ 3,-1},{-1,-1},{-1,-1},{ 4, 0},
+/*40*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*48*/ { 0, 1},{ 0, 1},{-1,-1},{ 1, 0},{ 1, 0},{-1,-1},{-1,-1},{-1,-1},
+/*50*/ { 1, 0},{ 0, 0},{ 2, 0},{ 2, 0},{-1, 0},{ 1, 0},{ 3, 0},{ 1, 0},
+/*58*/ { 0, 1},{ 1, 0},{ 0, 2},{ 0, 2},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},
+/*60*/ { 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*68*/ { 0, 3},{ 0, 3},{ 0, 2},{ 0, 8},{ 0,-1},{ 0,-1},{-1,-1},{-1,-1},
+/*70*/ { 1, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*78*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{ 5, 1},{ 4, 1},{ 4, 1},
+/*80*/ { 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*88*/ { 0, 5},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
+/*90*/ { 1, 0},{ 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*98*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
+/*a0*/ { 2, 0},{ 2, 0},{ 2, 0},{ 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},
+/*a8*/ { 1, 1},{ 1, 0},{ 3, 0},{ 2, 0},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
+/*b0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*b8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
+/*c0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*c8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
+/*d0*/ { 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*d8*/ { 1, 1},{ 1, 1},{-1,-1},{-1,-1},{ 0, 1},{ 0,-1},{-1,-1},{-1,-1},
+/*e0*/ {-1, 0},{ 4, 0},{ 0, 1},{-1, 0},{-1, 0},{ 4, 0},{-1, 0},{-1, 0},
+/*e8*/ { 3,-1},{-1,-1},{ 0, 1},{-1,-1},{ 0,-1},{-1,-1},{-1,-1},{ 0, 0},
+/*f0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*f8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
+};
+
+static char *pbook_type[] = {
+ "Unknown PowerBook",
+ "PowerBook 2400/3400/3500(G3)",
+ "PowerBook G3 Series",
+ "1999 PowerBook G3",
+ "Core99"
+};
+
+#ifdef CONFIG_PMAC_BACKLIGHT
+static struct backlight_controller pmu_backlight_controller = {
+ pmu_set_backlight_enable,
+ pmu_set_backlight_level
+};
+#endif /* CONFIG_PMAC_BACKLIGHT */
+
+int __openfirmware
+find_via_pmu(void)
+{
+ if (via != 0)
+ return 1;
+ vias = find_devices("via-pmu");
+ if (vias == 0)
+ return 0;
+ if (vias->next != 0)
+ printk(KERN_WARNING "Warning: only using 1st via-pmu\n");
+
+ if (vias->n_addrs < 1 || vias->n_intrs < 1) {
+ printk(KERN_ERR "via-pmu: %d addresses, %d interrupts!\n",
+ vias->n_addrs, vias->n_intrs);
+ if (vias->n_addrs < 1 || vias->n_intrs < 1)
+ return 0;
+ }
+
+ spin_lock_init(&pmu_lock);
+
+ pmu_has_adb = 1;
+
+ pmu_intr_mask = PMU_INT_PCEJECT |
+ PMU_INT_SNDBRT |
+ PMU_INT_ADB |
+ PMU_INT_TICK;
+
+ if (vias->parent->name && ((strcmp(vias->parent->name, "ohare") == 0)
+ || device_is_compatible(vias->parent, "ohare")))
+ pmu_kind = PMU_OHARE_BASED;
+ else if (device_is_compatible(vias->parent, "paddington"))
+ pmu_kind = PMU_PADDINGTON_BASED;
+ else if (device_is_compatible(vias->parent, "heathrow"))
+ pmu_kind = PMU_HEATHROW_BASED;
+ else if (device_is_compatible(vias->parent, "Keylargo")
+ || device_is_compatible(vias->parent, "K2-Keylargo")) {
+ struct device_node *gpio, *gpiop;
+
+ pmu_kind = PMU_KEYLARGO_BASED;
+ pmu_has_adb = (find_type_devices("adb") != NULL);
+ pmu_intr_mask = PMU_INT_PCEJECT |
+ PMU_INT_SNDBRT |
+ PMU_INT_ADB |
+ PMU_INT_TICK |
+ PMU_INT_ENVIRONMENT;
+
+ gpiop = find_devices("gpio");
+ if (gpiop && gpiop->n_addrs) {
+ gpio_reg = ioremap(gpiop->addrs->address, 0x10);
+ gpio = find_devices("extint-gpio1");
+ if (gpio == NULL)
+ gpio = find_devices("pmu-interrupt");
+ if (gpio && gpio->parent == gpiop && gpio->n_intrs)
+ gpio_irq = gpio->intrs[0].line;
+ }
+ } else
+ pmu_kind = PMU_UNKNOWN;
+
+ via = ioremap(vias->addrs->address, 0x2000);
+
+ out_8(&via[IER], IER_CLR | 0x7f); /* disable all intrs */
+ out_8(&via[IFR], 0x7f); /* clear IFR */
+
+ pmu_state = idle;
+
+ if (!init_pmu()) {
+ via = NULL;
+ return 0;
+ }
+
+ printk(KERN_INFO "PMU driver %d initialized for %s, firmware: %02x\n",
+ PMU_DRIVER_VERSION, pbook_type[pmu_kind], pmu_version);
+
+ sys_ctrler = SYS_CTRLER_PMU;
+
+ return 1;
+}
+
+#ifdef CONFIG_ADB
+static int __openfirmware
+pmu_probe(void)
+{
+ return vias == NULL? -ENODEV: 0;
+}
+
+static int __init
+pmu_init(void)
+{
+ if (vias == NULL)
+ return -ENODEV;
+ return 0;
+}
+#endif /* CONFIG_ADB */
+
+/*
+ * We can't wait until pmu_init gets called, that happens too late.
+ * It happens after IDE and SCSI initialization, which can take a few
+ * seconds, and by that time the PMU could have given up on us and
+ * turned us off.
+ * Thus this is called with arch_initcall rather than device_initcall.
+ */
+static int __init via_pmu_start(void)
+{
+ if (vias == NULL)
+ return -ENODEV;
+
+ bright_req_1.complete = 1;
+ bright_req_2.complete = 1;
+#ifdef CONFIG_PMAC_PBOOK
+ batt_req.complete = 1;
+#endif
+
+ if (request_irq(vias->intrs[0].line, via_pmu_interrupt, 0, "VIA-PMU",
+ (void *)0)) {
+ printk(KERN_ERR "VIA-PMU: can't get irq %d\n",
+ vias->intrs[0].line);
+ return -EAGAIN;
+ }
+
+ if (pmu_kind == PMU_KEYLARGO_BASED && gpio_irq != -1) {
+ if (request_irq(gpio_irq, gpio1_interrupt, 0, "GPIO1 ADB", (void *)0))
+ printk(KERN_ERR "pmu: can't get irq %d (GPIO1)\n", gpio_irq);
+ gpio_irq_enabled = 1;
+ }
+
+ /* Enable interrupts */
+ out_8(&via[IER], IER_SET | SR_INT | CB1_INT);
+
+ pmu_fully_inited = 1;
+
+ /* Make sure PMU settle down before continuing. This is _very_ important
+ * since the IDE probe may shut interrupts down for quite a bit of time. If
+ * a PMU communication is pending while this happens, the PMU may timeout
+ * Not that on Core99 machines, the PMU keeps sending us environement
+ * messages, we should find a way to either fix IDE or make it call
+ * pmu_suspend() before masking interrupts. This can also happens while
+ * scolling with some fbdevs.
+ */
+ do {
+ pmu_poll();
+ } while (pmu_state != idle);
+
+ return 0;
+}
+
+arch_initcall(via_pmu_start);
+
+/*
+ * This has to be done after pci_init, which is a subsys_initcall.
+ */
+static int __init via_pmu_dev_init(void)
+{
+ if (vias == NULL)
+ return -ENODEV;
+
+#ifndef CONFIG_PPC64
+ request_OF_resource(vias, 0, NULL);
+#endif
+#ifdef CONFIG_PMAC_BACKLIGHT
+ /* Enable backlight */
+ register_backlight_controller(&pmu_backlight_controller, NULL, "pmu");
+#endif /* CONFIG_PMAC_BACKLIGHT */
+
+#ifdef CONFIG_PMAC_PBOOK
+ if (machine_is_compatible("AAPL,3400/2400") ||
+ machine_is_compatible("AAPL,3500")) {
+ int mb = pmac_call_feature(PMAC_FTR_GET_MB_INFO,
+ NULL, PMAC_MB_INFO_MODEL, 0);
+ pmu_battery_count = 1;
+ if (mb == PMAC_TYPE_COMET)
+ pmu_batteries[0].flags |= PMU_BATT_TYPE_COMET;
+ else
+ pmu_batteries[0].flags |= PMU_BATT_TYPE_HOOPER;
+ } else if (machine_is_compatible("AAPL,PowerBook1998") ||
+ machine_is_compatible("PowerBook1,1")) {
+ pmu_battery_count = 2;
+ pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART;
+ pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART;
+ } else {
+ struct device_node* prim = find_devices("power-mgt");
+ u32 *prim_info = NULL;
+ if (prim)
+ prim_info = (u32 *)get_property(prim, "prim-info", NULL);
+ if (prim_info) {
+ /* Other stuffs here yet unknown */
+ pmu_battery_count = (prim_info[6] >> 16) & 0xff;
+ pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART;
+ if (pmu_battery_count > 1)
+ pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART;
+ }
+ }
+#endif /* CONFIG_PMAC_PBOOK */
+ /* Create /proc/pmu */
+ proc_pmu_root = proc_mkdir("pmu", NULL);
+ if (proc_pmu_root) {
+#ifdef CONFIG_PMAC_PBOOK
+ int i;
+
+ for (i=0; i<pmu_battery_count; i++) {
+ char title[16];
+ sprintf(title, "battery_%d", i);
+ proc_pmu_batt[i] = create_proc_read_entry(title, 0, proc_pmu_root,
+ proc_get_batt, (void *)i);
+ }
+#endif /* CONFIG_PMAC_PBOOK */
+
+ proc_pmu_info = create_proc_read_entry("info", 0, proc_pmu_root,
+ proc_get_info, NULL);
+ proc_pmu_irqstats = create_proc_read_entry("interrupts", 0, proc_pmu_root,
+ proc_get_irqstats, NULL);
+ proc_pmu_options = create_proc_entry("options", 0600, proc_pmu_root);
+ if (proc_pmu_options) {
+ proc_pmu_options->nlink = 1;
+ proc_pmu_options->read_proc = proc_read_options;
+ proc_pmu_options->write_proc = proc_write_options;
+ }
+ }
+ return 0;
+}
+
+device_initcall(via_pmu_dev_init);
+
+static int __openfirmware
+init_pmu(void)
+{
+ int timeout;
+ struct adb_request req;
+
+ out_8(&via[B], via[B] | TREQ); /* negate TREQ */
+ out_8(&via[DIRB], (via[DIRB] | TREQ) & ~TACK); /* TACK in, TREQ out */
+
+ pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
+ timeout = 100000;
+ while (!req.complete) {
+ if (--timeout < 0) {
+ printk(KERN_ERR "init_pmu: no response from PMU\n");
+ return 0;
+ }
+ udelay(10);
+ pmu_poll();
+ }
+
+ /* ack all pending interrupts */
+ timeout = 100000;
+ interrupt_data[0][0] = 1;
+ while (interrupt_data[0][0] || pmu_state != idle) {
+ if (--timeout < 0) {
+ printk(KERN_ERR "init_pmu: timed out acking intrs\n");
+ return 0;
+ }
+ if (pmu_state == idle)
+ adb_int_pending = 1;
+ via_pmu_interrupt(0, NULL, NULL);
+ udelay(10);
+ }
+
+ /* Tell PMU we are ready. */
+ if (pmu_kind == PMU_KEYLARGO_BASED) {
+ pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2);
+ while (!req.complete)
+ pmu_poll();
+ }
+
+ /* Read PMU version */
+ pmu_request(&req, NULL, 1, PMU_GET_VERSION);
+ pmu_wait_complete(&req);
+ if (req.reply_len > 0)
+ pmu_version = req.reply[0];
+
+ /* Read server mode setting */
+ if (pmu_kind == PMU_KEYLARGO_BASED) {
+ pmu_request(&req, NULL, 2, PMU_POWER_EVENTS,
+ PMU_PWR_GET_POWERUP_EVENTS);
+ pmu_wait_complete(&req);
+ if (req.reply_len == 2) {
+ if (req.reply[1] & PMU_PWR_WAKEUP_AC_INSERT)
+ option_server_mode = 1;
+ printk(KERN_INFO "via-pmu: Server Mode is %s\n",
+ option_server_mode ? "enabled" : "disabled");
+ }
+ }
+ return 1;
+}
+
+int
+pmu_get_model(void)
+{
+ return pmu_kind;
+}
+
+#ifndef CONFIG_PPC64
+static inline void wakeup_decrementer(void)
+{
+ set_dec(tb_ticks_per_jiffy);
+ /* No currently-supported powerbook has a 601,
+ * so use get_tbl, not native
+ */
+ last_jiffy_stamp(0) = tb_last_stamp = get_tbl();
+}
+#endif
+
+static void pmu_set_server_mode(int server_mode)
+{
+ struct adb_request req;
+
+ if (pmu_kind != PMU_KEYLARGO_BASED)
+ return;
+
+ option_server_mode = server_mode;
+ pmu_request(&req, NULL, 2, PMU_POWER_EVENTS, PMU_PWR_GET_POWERUP_EVENTS);
+ pmu_wait_complete(&req);
+ if (req.reply_len < 2)
+ return;
+ if (server_mode)
+ pmu_request(&req, NULL, 4, PMU_POWER_EVENTS,
+ PMU_PWR_SET_POWERUP_EVENTS,
+ req.reply[0], PMU_PWR_WAKEUP_AC_INSERT);
+ else
+ pmu_request(&req, NULL, 4, PMU_POWER_EVENTS,
+ PMU_PWR_CLR_POWERUP_EVENTS,
+ req.reply[0], PMU_PWR_WAKEUP_AC_INSERT);
+ pmu_wait_complete(&req);
+}
+
+#ifdef CONFIG_PMAC_PBOOK
+
+/* This new version of the code for 2400/3400/3500 powerbooks
+ * is inspired from the implementation in gkrellm-pmu
+ */
+static void __pmac
+done_battery_state_ohare(struct adb_request* req)
+{
+ /* format:
+ * [0] : flags
+ * 0x01 : AC indicator
+ * 0x02 : charging
+ * 0x04 : battery exist
+ * 0x08 :
+ * 0x10 :
+ * 0x20 : full charged
+ * 0x40 : pcharge reset
+ * 0x80 : battery exist
+ *
+ * [1][2] : battery voltage
+ * [3] : CPU temperature
+ * [4] : battery temperature
+ * [5] : current
+ * [6][7] : pcharge
+ * --tkoba
+ */
+ unsigned int bat_flags = PMU_BATT_TYPE_HOOPER;
+ long pcharge, charge, vb, vmax, lmax;
+ long vmax_charging, vmax_charged;
+ long amperage, voltage, time, max;
+ int mb = pmac_call_feature(PMAC_FTR_GET_MB_INFO,
+ NULL, PMAC_MB_INFO_MODEL, 0);
+
+ if (req->reply[0] & 0x01)
+ pmu_power_flags |= PMU_PWR_AC_PRESENT;
+ else
+ pmu_power_flags &= ~PMU_PWR_AC_PRESENT;
+
+ if (mb == PMAC_TYPE_COMET) {
+ vmax_charged = 189;
+ vmax_charging = 213;
+ lmax = 6500;
+ } else {
+ vmax_charged = 330;
+ vmax_charging = 330;
+ lmax = 6500;
+ }
+ vmax = vmax_charged;
+
+ /* If battery installed */
+ if (req->reply[0] & 0x04) {
+ bat_flags |= PMU_BATT_PRESENT;
+ if (req->reply[0] & 0x02)
+ bat_flags |= PMU_BATT_CHARGING;
+ vb = (req->reply[1] << 8) | req->reply[2];
+ voltage = (vb * 265 + 72665) / 10;
+ amperage = req->reply[5];
+ if ((req->reply[0] & 0x01) == 0) {
+ if (amperage > 200)
+ vb += ((amperage - 200) * 15)/100;
+ } else if (req->reply[0] & 0x02) {
+ vb = (vb * 97) / 100;
+ vmax = vmax_charging;
+ }
+ charge = (100 * vb) / vmax;
+ if (req->reply[0] & 0x40) {
+ pcharge = (req->reply[6] << 8) + req->reply[7];
+ if (pcharge > lmax)
+ pcharge = lmax;
+ pcharge *= 100;
+ pcharge = 100 - pcharge / lmax;
+ if (pcharge < charge)
+ charge = pcharge;
+ }
+ if (amperage > 0)
+ time = (charge * 16440) / amperage;
+ else
+ time = 0;
+ max = 100;
+ amperage = -amperage;
+ } else
+ charge = max = amperage = voltage = time = 0;
+
+ pmu_batteries[pmu_cur_battery].flags = bat_flags;
+ pmu_batteries[pmu_cur_battery].charge = charge;
+ pmu_batteries[pmu_cur_battery].max_charge = max;
+ pmu_batteries[pmu_cur_battery].amperage = amperage;
+ pmu_batteries[pmu_cur_battery].voltage = voltage;
+ pmu_batteries[pmu_cur_battery].time_remaining = time;
+
+ clear_bit(0, &async_req_locks);
+}
+
+static void __pmac
+done_battery_state_smart(struct adb_request* req)
+{
+ /* format:
+ * [0] : format of this structure (known: 3,4,5)
+ * [1] : flags
+ *
+ * format 3 & 4:
+ *
+ * [2] : charge
+ * [3] : max charge
+ * [4] : current
+ * [5] : voltage
+ *
+ * format 5:
+ *
+ * [2][3] : charge
+ * [4][5] : max charge
+ * [6][7] : current
+ * [8][9] : voltage
+ */
+
+ unsigned int bat_flags = PMU_BATT_TYPE_SMART;
+ int amperage;
+ unsigned int capa, max, voltage;
+
+ if (req->reply[1] & 0x01)
+ pmu_power_flags |= PMU_PWR_AC_PRESENT;
+ else
+ pmu_power_flags &= ~PMU_PWR_AC_PRESENT;
+
+
+ capa = max = amperage = voltage = 0;
+
+ if (req->reply[1] & 0x04) {
+ bat_flags |= PMU_BATT_PRESENT;
+ switch(req->reply[0]) {
+ case 3:
+ case 4: capa = req->reply[2];
+ max = req->reply[3];
+ amperage = *((signed char *)&req->reply[4]);
+ voltage = req->reply[5];
+ break;
+ case 5: capa = (req->reply[2] << 8) | req->reply[3];
+ max = (req->reply[4] << 8) | req->reply[5];
+ amperage = *((signed short *)&req->reply[6]);
+ voltage = (req->reply[8] << 8) | req->reply[9];
+ break;
+ default:
+ printk(KERN_WARNING "pmu.c : unrecognized battery info, len: %d, %02x %02x %02x %02x\n",
+ req->reply_len, req->reply[0], req->reply[1], req->reply[2], req->reply[3]);
+ break;
+ }
+ }
+
+ if ((req->reply[1] & 0x01) && (amperage > 0))
+ bat_flags |= PMU_BATT_CHARGING;
+
+ pmu_batteries[pmu_cur_battery].flags = bat_flags;
+ pmu_batteries[pmu_cur_battery].charge = capa;
+ pmu_batteries[pmu_cur_battery].max_charge = max;
+ pmu_batteries[pmu_cur_battery].amperage = amperage;
+ pmu_batteries[pmu_cur_battery].voltage = voltage;
+ if (amperage) {
+ if ((req->reply[1] & 0x01) && (amperage > 0))
+ pmu_batteries[pmu_cur_battery].time_remaining
+ = ((max-capa) * 3600) / amperage;
+ else
+ pmu_batteries[pmu_cur_battery].time_remaining
+ = (capa * 3600) / (-amperage);
+ } else
+ pmu_batteries[pmu_cur_battery].time_remaining = 0;
+
+ pmu_cur_battery = (pmu_cur_battery + 1) % pmu_battery_count;
+
+ clear_bit(0, &async_req_locks);
+}
+
+static void __pmac
+query_battery_state(void)
+{
+ if (test_and_set_bit(0, &async_req_locks))
+ return;
+ if (pmu_kind == PMU_OHARE_BASED)
+ pmu_request(&batt_req, done_battery_state_ohare,
+ 1, PMU_BATTERY_STATE);
+ else
+ pmu_request(&batt_req, done_battery_state_smart,
+ 2, PMU_SMART_BATTERY_STATE, pmu_cur_battery+1);
+}
+
+#endif /* CONFIG_PMAC_PBOOK */
+
+static int __pmac
+proc_get_info(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ char* p = page;
+
+ p += sprintf(p, "PMU driver version : %d\n", PMU_DRIVER_VERSION);
+ p += sprintf(p, "PMU firmware version : %02x\n", pmu_version);
+#ifdef CONFIG_PMAC_PBOOK
+ p += sprintf(p, "AC Power : %d\n",
+ ((pmu_power_flags & PMU_PWR_AC_PRESENT) != 0));
+ p += sprintf(p, "Battery count : %d\n", pmu_battery_count);
+#endif /* CONFIG_PMAC_PBOOK */
+
+ return p - page;
+}
+
+static int __pmac
+proc_get_irqstats(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ int i;
+ char* p = page;
+ static const char *irq_names[] = {
+ "Total CB1 triggered events",
+ "Total GPIO1 triggered events",
+ "PC-Card eject button",
+ "Sound/Brightness button",
+ "ADB message",
+ "Battery state change",
+ "Environment interrupt",
+ "Tick timer",
+ "Ghost interrupt (zero len)",
+ "Empty interrupt (empty mask)",
+ "Max irqs in a row"
+ };
+
+ for (i=0; i<11; i++) {
+ p += sprintf(p, " %2u: %10u (%s)\n",
+ i, pmu_irq_stats[i], irq_names[i]);
+ }
+ return p - page;
+}
+
+#ifdef CONFIG_PMAC_PBOOK
+static int __pmac
+proc_get_batt(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ int batnum = (int)data;
+ char *p = page;
+
+ p += sprintf(p, "\n");
+ p += sprintf(p, "flags : %08x\n",
+ pmu_batteries[batnum].flags);
+ p += sprintf(p, "charge : %d\n",
+ pmu_batteries[batnum].charge);
+ p += sprintf(p, "max_charge : %d\n",
+ pmu_batteries[batnum].max_charge);
+ p += sprintf(p, "current : %d\n",
+ pmu_batteries[batnum].amperage);
+ p += sprintf(p, "voltage : %d\n",
+ pmu_batteries[batnum].voltage);
+ p += sprintf(p, "time rem. : %d\n",
+ pmu_batteries[batnum].time_remaining);
+
+ return p - page;
+}
+#endif /* CONFIG_PMAC_PBOOK */
+
+static int __pmac
+proc_read_options(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ char *p = page;
+
+#ifdef CONFIG_PMAC_PBOOK
+ if (pmu_kind == PMU_KEYLARGO_BASED &&
+ pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0)
+ p += sprintf(p, "lid_wakeup=%d\n", option_lid_wakeup);
+#endif /* CONFIG_PMAC_PBOOK */
+ if (pmu_kind == PMU_KEYLARGO_BASED)
+ p += sprintf(p, "server_mode=%d\n", option_server_mode);
+
+ return p - page;
+}
+
+static int __pmac
+proc_write_options(struct file *file, const char __user *buffer,
+ unsigned long count, void *data)
+{
+ char tmp[33];
+ char *label, *val;
+ unsigned long fcount = count;
+
+ if (!count)
+ return -EINVAL;
+ if (count > 32)
+ count = 32;
+ if (copy_from_user(tmp, buffer, count))
+ return -EFAULT;
+ tmp[count] = 0;
+
+ label = tmp;
+ while(*label == ' ')
+ label++;
+ val = label;
+ while(*val && (*val != '=')) {
+ if (*val == ' ')
+ *val = 0;
+ val++;
+ }
+ if ((*val) == 0)
+ return -EINVAL;
+ *(val++) = 0;
+ while(*val == ' ')
+ val++;
+#ifdef CONFIG_PMAC_PBOOK
+ if (pmu_kind == PMU_KEYLARGO_BASED &&
+ pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0)
+ if (!strcmp(label, "lid_wakeup"))
+ option_lid_wakeup = ((*val) == '1');
+#endif /* CONFIG_PMAC_PBOOK */
+ if (pmu_kind == PMU_KEYLARGO_BASED && !strcmp(label, "server_mode")) {
+ int new_value;
+ new_value = ((*val) == '1');
+ if (new_value != option_server_mode)
+ pmu_set_server_mode(new_value);
+ }
+ return fcount;
+}
+
+#ifdef CONFIG_ADB
+/* Send an ADB command */
+static int __pmac
+pmu_send_request(struct adb_request *req, int sync)
+{
+ int i, ret;
+
+ if ((vias == NULL) || (!pmu_fully_inited)) {
+ req->complete = 1;
+ return -ENXIO;
+ }
+
+ ret = -EINVAL;
+
+ switch (req->data[0]) {
+ case PMU_PACKET:
+ for (i = 0; i < req->nbytes - 1; ++i)
+ req->data[i] = req->data[i+1];
+ --req->nbytes;
+ if (pmu_data_len[req->data[0]][1] != 0) {
+ req->reply[0] = ADB_RET_OK;
+ req->reply_len = 1;
+ } else
+ req->reply_len = 0;
+ ret = pmu_queue_request(req);
+ break;
+ case CUDA_PACKET:
+ switch (req->data[1]) {
+ case CUDA_GET_TIME:
+ if (req->nbytes != 2)
+ break;
+ req->data[0] = PMU_READ_RTC;
+ req->nbytes = 1;
+ req->reply_len = 3;
+ req->reply[0] = CUDA_PACKET;
+ req->reply[1] = 0;
+ req->reply[2] = CUDA_GET_TIME;
+ ret = pmu_queue_request(req);
+ break;
+ case CUDA_SET_TIME:
+ if (req->nbytes != 6)
+ break;
+ req->data[0] = PMU_SET_RTC;
+ req->nbytes = 5;
+ for (i = 1; i <= 4; ++i)
+ req->data[i] = req->data[i+1];
+ req->reply_len = 3;
+ req->reply[0] = CUDA_PACKET;
+ req->reply[1] = 0;
+ req->reply[2] = CUDA_SET_TIME;
+ ret = pmu_queue_request(req);
+ break;
+ }
+ break;
+ case ADB_PACKET:
+ if (!pmu_has_adb)
+ return -ENXIO;
+ for (i = req->nbytes - 1; i > 1; --i)
+ req->data[i+2] = req->data[i];
+ req->data[3] = req->nbytes - 2;
+ req->data[2] = pmu_adb_flags;
+ /*req->data[1] = req->data[1];*/
+ req->data[0] = PMU_ADB_CMD;
+ req->nbytes += 2;
+ req->reply_expected = 1;
+ req->reply_len = 0;
+ ret = pmu_queue_request(req);
+ break;
+ }
+ if (ret) {
+ req->complete = 1;
+ return ret;
+ }
+
+ if (sync)
+ while (!req->complete)
+ pmu_poll();
+
+ return 0;
+}
+
+/* Enable/disable autopolling */
+static int __pmac
+pmu_adb_autopoll(int devs)
+{
+ struct adb_request req;
+
+ if ((vias == NULL) || (!pmu_fully_inited) || !pmu_has_adb)
+ return -ENXIO;
+
+ if (devs) {
+ adb_dev_map = devs;
+ pmu_request(&req, NULL, 5, PMU_ADB_CMD, 0, 0x86,
+ adb_dev_map >> 8, adb_dev_map);
+ pmu_adb_flags = 2;
+ } else {
+ pmu_request(&req, NULL, 1, PMU_ADB_POLL_OFF);
+ pmu_adb_flags = 0;
+ }
+ while (!req.complete)
+ pmu_poll();
+ return 0;
+}
+
+/* Reset the ADB bus */
+static int __pmac
+pmu_adb_reset_bus(void)
+{
+ struct adb_request req;
+ int save_autopoll = adb_dev_map;
+
+ if ((vias == NULL) || (!pmu_fully_inited) || !pmu_has_adb)
+ return -ENXIO;
+
+ /* anyone got a better idea?? */
+ pmu_adb_autopoll(0);
+
+ req.nbytes = 5;
+ req.done = NULL;
+ req.data[0] = PMU_ADB_CMD;
+ req.data[1] = 0;
+ req.data[2] = ADB_BUSRESET;
+ req.data[3] = 0;
+ req.data[4] = 0;
+ req.reply_len = 0;
+ req.reply_expected = 1;
+ if (pmu_queue_request(&req) != 0) {
+ printk(KERN_ERR "pmu_adb_reset_bus: pmu_queue_request failed\n");
+ return -EIO;
+ }
+ pmu_wait_complete(&req);
+
+ if (save_autopoll != 0)
+ pmu_adb_autopoll(save_autopoll);
+
+ return 0;
+}
+#endif /* CONFIG_ADB */
+
+/* Construct and send a pmu request */
+int __openfirmware
+pmu_request(struct adb_request *req, void (*done)(struct adb_request *),
+ int nbytes, ...)
+{
+ va_list list;
+ int i;
+
+ if (vias == NULL)
+ return -ENXIO;
+
+ if (nbytes < 0 || nbytes > 32) {
+ printk(KERN_ERR "pmu_request: bad nbytes (%d)\n", nbytes);
+ req->complete = 1;
+ return -EINVAL;
+ }
+ req->nbytes = nbytes;
+ req->done = done;
+ va_start(list, nbytes);
+ for (i = 0; i < nbytes; ++i)
+ req->data[i] = va_arg(list, int);
+ va_end(list);
+ req->reply_len = 0;
+ req->reply_expected = 0;
+ return pmu_queue_request(req);
+}
+
+int __pmac
+pmu_queue_request(struct adb_request *req)
+{
+ unsigned long flags;
+ int nsend;
+
+ if (via == NULL) {
+ req->complete = 1;
+ return -ENXIO;
+ }
+ if (req->nbytes <= 0) {
+ req->complete = 1;
+ return 0;
+ }
+ nsend = pmu_data_len[req->data[0]][0];
+ if (nsend >= 0 && req->nbytes != nsend + 1) {
+ req->complete = 1;
+ return -EINVAL;
+ }
+
+ req->next = NULL;
+ req->sent = 0;
+ req->complete = 0;
+
+ spin_lock_irqsave(&pmu_lock, flags);
+ if (current_req != 0) {
+ last_req->next = req;
+ last_req = req;
+ } else {
+ current_req = req;
+ last_req = req;
+ if (pmu_state == idle)
+ pmu_start();
+ }
+ spin_unlock_irqrestore(&pmu_lock, flags);
+
+ return 0;
+}
+
+static inline void
+wait_for_ack(void)
+{
+ /* Sightly increased the delay, I had one occurrence of the message
+ * reported
+ */
+ int timeout = 4000;
+ while ((in_8(&via[B]) & TACK) == 0) {
+ if (--timeout < 0) {
+ printk(KERN_ERR "PMU not responding (!ack)\n");
+ return;
+ }
+ udelay(10);
+ }
+}
+
+/* New PMU seems to be very sensitive to those timings, so we make sure
+ * PCI is flushed immediately */
+static inline void
+send_byte(int x)
+{
+ volatile unsigned char __iomem *v = via;
+
+ out_8(&v[ACR], in_8(&v[ACR]) | SR_OUT | SR_EXT);
+ out_8(&v[SR], x);
+ out_8(&v[B], in_8(&v[B]) & ~TREQ); /* assert TREQ */
+ (void)in_8(&v[B]);
+}
+
+static inline void
+recv_byte(void)
+{
+ volatile unsigned char __iomem *v = via;
+
+ out_8(&v[ACR], (in_8(&v[ACR]) & ~SR_OUT) | SR_EXT);
+ in_8(&v[SR]); /* resets SR */
+ out_8(&v[B], in_8(&v[B]) & ~TREQ);
+ (void)in_8(&v[B]);
+}
+
+static inline void
+pmu_done(struct adb_request *req)
+{
+ void (*done)(struct adb_request *) = req->done;
+ mb();
+ req->complete = 1;
+ /* Here, we assume that if the request has a done member, the
+ * struct request will survive to setting req->complete to 1
+ */
+ if (done)
+ (*done)(req);
+}
+
+static void __pmac
+pmu_start(void)
+{
+ struct adb_request *req;
+
+ /* assert pmu_state == idle */
+ /* get the packet to send */
+ req = current_req;
+ if (req == 0 || pmu_state != idle
+ || (/*req->reply_expected && */req_awaiting_reply))
+ return;
+
+ pmu_state = sending;
+ data_index = 1;
+ data_len = pmu_data_len[req->data[0]][0];
+
+ /* Sounds safer to make sure ACK is high before writing. This helped
+ * kill a problem with ADB and some iBooks
+ */
+ wait_for_ack();
+ /* set the shift register to shift out and send a byte */
+ send_byte(req->data[0]);
+}
+
+void __openfirmware
+pmu_poll(void)
+{
+ if (!via)
+ return;
+ if (disable_poll)
+ return;
+ via_pmu_interrupt(0, NULL, NULL);
+}
+
+void __openfirmware
+pmu_poll_adb(void)
+{
+ if (!via)
+ return;
+ if (disable_poll)
+ return;
+ /* Kicks ADB read when PMU is suspended */
+ adb_int_pending = 1;
+ do {
+ via_pmu_interrupt(0, NULL, NULL);
+ } while (pmu_suspended && (adb_int_pending || pmu_state != idle
+ || req_awaiting_reply));
+}
+
+void __openfirmware
+pmu_wait_complete(struct adb_request *req)
+{
+ if (!via)
+ return;
+ while((pmu_state != idle && pmu_state != locked) || !req->complete)
+ via_pmu_interrupt(0, NULL, NULL);
+}
+
+/* This function loops until the PMU is idle and prevents it from
+ * anwsering to ADB interrupts. pmu_request can still be called.
+ * This is done to avoid spurrious shutdowns when we know we'll have
+ * interrupts switched off for a long time
+ */
+void __openfirmware
+pmu_suspend(void)
+{
+ unsigned long flags;
+#ifdef SUSPEND_USES_PMU
+ struct adb_request *req;
+#endif
+ if (!via)
+ return;
+
+ spin_lock_irqsave(&pmu_lock, flags);
+ pmu_suspended++;
+ if (pmu_suspended > 1) {
+ spin_unlock_irqrestore(&pmu_lock, flags);
+ return;
+ }
+
+ do {
+ spin_unlock_irqrestore(&pmu_lock, flags);
+ if (req_awaiting_reply)
+ adb_int_pending = 1;
+ via_pmu_interrupt(0, NULL, NULL);
+ spin_lock_irqsave(&pmu_lock, flags);
+ if (!adb_int_pending && pmu_state == idle && !req_awaiting_reply) {
+#ifdef SUSPEND_USES_PMU
+ pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, 0);
+ spin_unlock_irqrestore(&pmu_lock, flags);
+ while(!req.complete)
+ pmu_poll();
+#else /* SUSPEND_USES_PMU */
+ if (gpio_irq >= 0)
+ disable_irq_nosync(gpio_irq);
+ out_8(&via[IER], CB1_INT | IER_CLR);
+ spin_unlock_irqrestore(&pmu_lock, flags);
+#endif /* SUSPEND_USES_PMU */
+ break;
+ }
+ } while (1);
+}
+
+void __openfirmware
+pmu_resume(void)
+{
+ unsigned long flags;
+
+ if (!via || (pmu_suspended < 1))
+ return;
+
+ spin_lock_irqsave(&pmu_lock, flags);
+ pmu_suspended--;
+ if (pmu_suspended > 0) {
+ spin_unlock_irqrestore(&pmu_lock, flags);
+ return;
+ }
+ adb_int_pending = 1;
+#ifdef SUSPEND_USES_PMU
+ pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
+ spin_unlock_irqrestore(&pmu_lock, flags);
+ while(!req.complete)
+ pmu_poll();
+#else /* SUSPEND_USES_PMU */
+ if (gpio_irq >= 0)
+ enable_irq(gpio_irq);
+ out_8(&via[IER], CB1_INT | IER_SET);
+ spin_unlock_irqrestore(&pmu_lock, flags);
+ pmu_poll();
+#endif /* SUSPEND_USES_PMU */
+}
+
+/* Interrupt data could be the result data from an ADB cmd */
+static void __pmac
+pmu_handle_data(unsigned char *data, int len, struct pt_regs *regs)
+{
+ unsigned char ints, pirq;
+ int i = 0;
+
+ asleep = 0;
+ if (drop_interrupts || len < 1) {
+ adb_int_pending = 0;
+ pmu_irq_stats[8]++;
+ return;
+ }
+
+ /* Get PMU interrupt mask */
+ ints = data[0];
+
+ /* Record zero interrupts for stats */
+ if (ints == 0)
+ pmu_irq_stats[9]++;
+
+ /* Hack to deal with ADB autopoll flag */
+ if (ints & PMU_INT_ADB)
+ ints &= ~(PMU_INT_ADB_AUTO | PMU_INT_AUTO_SRQ_POLL);
+
+next:
+
+ if (ints == 0) {
+ if (i > pmu_irq_stats[10])
+ pmu_irq_stats[10] = i;
+ return;
+ }
+
+ for (pirq = 0; pirq < 8; pirq++)
+ if (ints & (1 << pirq))
+ break;
+ pmu_irq_stats[pirq]++;
+ i++;
+ ints &= ~(1 << pirq);
+
+ /* Note: for some reason, we get an interrupt with len=1,
+ * data[0]==0 after each normal ADB interrupt, at least
+ * on the Pismo. Still investigating... --BenH
+ */
+ if ((1 << pirq) & PMU_INT_ADB) {
+ if ((data[0] & PMU_INT_ADB_AUTO) == 0) {
+ struct adb_request *req = req_awaiting_reply;
+ if (req == 0) {
+ printk(KERN_ERR "PMU: extra ADB reply\n");
+ return;
+ }
+ req_awaiting_reply = NULL;
+ if (len <= 2)
+ req->reply_len = 0;
+ else {
+ memcpy(req->reply, data + 1, len - 1);
+ req->reply_len = len - 1;
+ }
+ pmu_done(req);
+ } else {
+#if defined(CONFIG_XMON) && !defined(CONFIG_PPC64)
+ if (len == 4 && data[1] == 0x2c) {
+ extern int xmon_wants_key, xmon_adb_keycode;
+ if (xmon_wants_key) {
+ xmon_adb_keycode = data[2];
+ return;
+ }
+ }
+#endif /* defined(CONFIG_XMON) && !defined(CONFIG_PPC64) */
+#ifdef CONFIG_ADB
+ /*
+ * XXX On the [23]400 the PMU gives us an up
+ * event for keycodes 0x74 or 0x75 when the PC
+ * card eject buttons are released, so we
+ * ignore those events.
+ */
+ if (!(pmu_kind == PMU_OHARE_BASED && len == 4
+ && data[1] == 0x2c && data[3] == 0xff
+ && (data[2] & ~1) == 0xf4))
+ adb_input(data+1, len-1, regs, 1);
+#endif /* CONFIG_ADB */
+ }
+ }
+ /* Sound/brightness button pressed */
+ else if ((1 << pirq) & PMU_INT_SNDBRT) {
+#ifdef CONFIG_PMAC_BACKLIGHT
+ if (len == 3)
+#ifdef CONFIG_INPUT_ADBHID
+ if (!disable_kernel_backlight)
+#endif /* CONFIG_INPUT_ADBHID */
+ set_backlight_level(data[1] >> 4);
+#endif /* CONFIG_PMAC_BACKLIGHT */
+ }
+ /* Tick interrupt */
+ else if ((1 << pirq) & PMU_INT_TICK) {
+#ifdef CONFIG_PMAC_PBOOK
+ /* Environement or tick interrupt, query batteries */
+ if (pmu_battery_count) {
+ if ((--query_batt_timer) == 0) {
+ query_battery_state();
+ query_batt_timer = BATTERY_POLLING_COUNT;
+ }
+ }
+ }
+ else if ((1 << pirq) & PMU_INT_ENVIRONMENT) {
+ if (pmu_battery_count)
+ query_battery_state();
+ pmu_pass_intr(data, len);
+ } else {
+ pmu_pass_intr(data, len);
+#endif /* CONFIG_PMAC_PBOOK */
+ }
+ goto next;
+}
+
+static struct adb_request* __pmac
+pmu_sr_intr(struct pt_regs *regs)
+{
+ struct adb_request *req;
+ int bite = 0;
+
+ if (via[B] & TREQ) {
+ printk(KERN_ERR "PMU: spurious SR intr (%x)\n", via[B]);
+ out_8(&via[IFR], SR_INT);
+ return NULL;
+ }
+ /* The ack may not yet be low when we get the interrupt */
+ while ((in_8(&via[B]) & TACK) != 0)
+ ;
+
+ /* if reading grab the byte, and reset the interrupt */
+ if (pmu_state == reading || pmu_state == reading_intr)
+ bite = in_8(&via[SR]);
+
+ /* reset TREQ and wait for TACK to go high */
+ out_8(&via[B], in_8(&via[B]) | TREQ);
+ wait_for_ack();
+
+ switch (pmu_state) {
+ case sending:
+ req = current_req;
+ if (data_len < 0) {
+ data_len = req->nbytes - 1;
+ send_byte(data_len);
+ break;
+ }
+ if (data_index <= data_len) {
+ send_byte(req->data[data_index++]);
+ break;
+ }
+ req->sent = 1;
+ data_len = pmu_data_len[req->data[0]][1];
+ if (data_len == 0) {
+ pmu_state = idle;
+ current_req = req->next;
+ if (req->reply_expected)
+ req_awaiting_reply = req;
+ else
+ return req;
+ } else {
+ pmu_state = reading;
+ data_index = 0;
+ reply_ptr = req->reply + req->reply_len;
+ recv_byte();
+ }
+ break;
+
+ case intack:
+ data_index = 0;
+ data_len = -1;
+ pmu_state = reading_intr;
+ reply_ptr = interrupt_data[int_data_last];
+ recv_byte();
+ if (gpio_irq >= 0 && !gpio_irq_enabled) {
+ enable_irq(gpio_irq);
+ gpio_irq_enabled = 1;
+ }
+ break;
+
+ case reading:
+ case reading_intr:
+ if (data_len == -1) {
+ data_len = bite;
+ if (bite > 32)
+ printk(KERN_ERR "PMU: bad reply len %d\n", bite);
+ } else if (data_index < 32) {
+ reply_ptr[data_index++] = bite;
+ }
+ if (data_index < data_len) {
+ recv_byte();
+ break;
+ }
+
+ if (pmu_state == reading_intr) {
+ pmu_state = idle;
+ int_data_state[int_data_last] = int_data_ready;
+ interrupt_data_len[int_data_last] = data_len;
+ } else {
+ req = current_req;
+ /*
+ * For PMU sleep and freq change requests, we lock the
+ * PMU until it's explicitely unlocked. This avoids any
+ * spurrious event polling getting in
+ */
+ current_req = req->next;
+ req->reply_len += data_index;
+ if (req->data[0] == PMU_SLEEP || req->data[0] == PMU_CPU_SPEED)
+ pmu_state = locked;
+ else
+ pmu_state = idle;
+ return req;
+ }
+ break;
+
+ default:
+ printk(KERN_ERR "via_pmu_interrupt: unknown state %d?\n",
+ pmu_state);
+ }
+ return NULL;
+}
+
+static irqreturn_t __pmac
+via_pmu_interrupt(int irq, void *arg, struct pt_regs *regs)
+{
+ unsigned long flags;
+ int intr;
+ int nloop = 0;
+ int int_data = -1;
+ struct adb_request *req = NULL;
+ int handled = 0;
+
+ /* This is a bit brutal, we can probably do better */
+ spin_lock_irqsave(&pmu_lock, flags);
+ ++disable_poll;
+
+ for (;;) {
+ intr = in_8(&via[IFR]) & (SR_INT | CB1_INT);
+ if (intr == 0)
+ break;
+ handled = 1;
+ if (++nloop > 1000) {
+ printk(KERN_DEBUG "PMU: stuck in intr loop, "
+ "intr=%x, ier=%x pmu_state=%d\n",
+ intr, in_8(&via[IER]), pmu_state);
+ break;
+ }
+ out_8(&via[IFR], intr);
+ if (intr & CB1_INT) {
+ adb_int_pending = 1;
+ pmu_irq_stats[0]++;
+ }
+ if (intr & SR_INT) {
+ req = pmu_sr_intr(regs);
+ if (req)
+ break;
+ }
+ }
+
+recheck:
+ if (pmu_state == idle) {
+ if (adb_int_pending) {
+ if (int_data_state[0] == int_data_empty)
+ int_data_last = 0;
+ else if (int_data_state[1] == int_data_empty)
+ int_data_last = 1;
+ else
+ goto no_free_slot;
+ pmu_state = intack;
+ int_data_state[int_data_last] = int_data_fill;
+ /* Sounds safer to make sure ACK is high before writing.
+ * This helped kill a problem with ADB and some iBooks
+ */
+ wait_for_ack();
+ send_byte(PMU_INT_ACK);
+ adb_int_pending = 0;
+ } else if (current_req)
+ pmu_start();
+ }
+no_free_slot:
+ /* Mark the oldest buffer for flushing */
+ if (int_data_state[!int_data_last] == int_data_ready) {
+ int_data_state[!int_data_last] = int_data_flush;
+ int_data = !int_data_last;
+ } else if (int_data_state[int_data_last] == int_data_ready) {
+ int_data_state[int_data_last] = int_data_flush;
+ int_data = int_data_last;
+ }
+ --disable_poll;
+ spin_unlock_irqrestore(&pmu_lock, flags);
+
+ /* Deal with completed PMU requests outside of the lock */
+ if (req) {
+ pmu_done(req);
+ req = NULL;
+ }
+
+ /* Deal with interrupt datas outside of the lock */
+ if (int_data >= 0) {
+ pmu_handle_data(interrupt_data[int_data], interrupt_data_len[int_data], regs);
+ spin_lock_irqsave(&pmu_lock, flags);
+ ++disable_poll;
+ int_data_state[int_data] = int_data_empty;
+ int_data = -1;
+ goto recheck;
+ }
+
+ return IRQ_RETVAL(handled);
+}
+
+void __pmac
+pmu_unlock(void)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&pmu_lock, flags);
+ if (pmu_state == locked)
+ pmu_state = idle;
+ adb_int_pending = 1;
+ spin_unlock_irqrestore(&pmu_lock, flags);
+}
+
+
+static irqreturn_t __pmac
+gpio1_interrupt(int irq, void *arg, struct pt_regs *regs)
+{
+ unsigned long flags;
+
+ if ((in_8(gpio_reg + 0x9) & 0x02) == 0) {
+ spin_lock_irqsave(&pmu_lock, flags);
+ if (gpio_irq_enabled > 0) {
+ disable_irq_nosync(gpio_irq);
+ gpio_irq_enabled = 0;
+ }
+ pmu_irq_stats[1]++;
+ adb_int_pending = 1;
+ spin_unlock_irqrestore(&pmu_lock, flags);
+ via_pmu_interrupt(0, NULL, NULL);
+ return IRQ_HANDLED;
+ }
+ return IRQ_NONE;
+}
+
+#ifdef CONFIG_PMAC_BACKLIGHT
+static int backlight_to_bright[] __pmacdata = {
+ 0x7f, 0x46, 0x42, 0x3e, 0x3a, 0x36, 0x32, 0x2e,
+ 0x2a, 0x26, 0x22, 0x1e, 0x1a, 0x16, 0x12, 0x0e
+};
+
+static int __openfirmware
+pmu_set_backlight_enable(int on, int level, void* data)
+{
+ struct adb_request req;
+
+ if (vias == NULL)
+ return -ENODEV;
+
+ if (on) {
+ pmu_request(&req, NULL, 2, PMU_BACKLIGHT_BRIGHT,
+ backlight_to_bright[level]);
+ pmu_wait_complete(&req);
+ }
+ pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
+ PMU_POW_BACKLIGHT | (on ? PMU_POW_ON : PMU_POW_OFF));
+ pmu_wait_complete(&req);
+
+ return 0;
+}
+
+static void __openfirmware
+pmu_bright_complete(struct adb_request *req)
+{
+ if (req == &bright_req_1)
+ clear_bit(1, &async_req_locks);
+ if (req == &bright_req_2)
+ clear_bit(2, &async_req_locks);
+}
+
+static int __openfirmware
+pmu_set_backlight_level(int level, void* data)
+{
+ if (vias == NULL)
+ return -ENODEV;
+
+ if (test_and_set_bit(1, &async_req_locks))
+ return -EAGAIN;
+ pmu_request(&bright_req_1, pmu_bright_complete, 2, PMU_BACKLIGHT_BRIGHT,
+ backlight_to_bright[level]);
+ if (test_and_set_bit(2, &async_req_locks))
+ return -EAGAIN;
+ pmu_request(&bright_req_2, pmu_bright_complete, 2, PMU_POWER_CTRL,
+ PMU_POW_BACKLIGHT | (level > BACKLIGHT_OFF ?
+ PMU_POW_ON : PMU_POW_OFF));
+
+ return 0;
+}
+#endif /* CONFIG_PMAC_BACKLIGHT */
+
+void __pmac
+pmu_enable_irled(int on)
+{
+ struct adb_request req;
+
+ if (vias == NULL)
+ return ;
+ if (pmu_kind == PMU_KEYLARGO_BASED)
+ return ;
+
+ pmu_request(&req, NULL, 2, PMU_POWER_CTRL, PMU_POW_IRLED |
+ (on ? PMU_POW_ON : PMU_POW_OFF));
+ pmu_wait_complete(&req);
+}
+
+void __pmac
+pmu_restart(void)
+{
+ struct adb_request req;
+
+ if (via == NULL)
+ return;
+
+ local_irq_disable();
+
+ drop_interrupts = 1;
+
+ if (pmu_kind != PMU_KEYLARGO_BASED) {
+ pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB |
+ PMU_INT_TICK );
+ while(!req.complete)
+ pmu_poll();
+ }
+
+ pmu_request(&req, NULL, 1, PMU_RESET);
+ pmu_wait_complete(&req);
+ for (;;)
+ ;
+}
+
+void __pmac
+pmu_shutdown(void)
+{
+ struct adb_request req;
+
+ if (via == NULL)
+ return;
+
+ local_irq_disable();
+
+ drop_interrupts = 1;
+
+ if (pmu_kind != PMU_KEYLARGO_BASED) {
+ pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB |
+ PMU_INT_TICK );
+ pmu_wait_complete(&req);
+ } else {
+ /* Disable server mode on shutdown or we'll just
+ * wake up again
+ */
+ pmu_set_server_mode(0);
+ }
+
+ pmu_request(&req, NULL, 5, PMU_SHUTDOWN,
+ 'M', 'A', 'T', 'T');
+ pmu_wait_complete(&req);
+ for (;;)
+ ;
+}
+
+int
+pmu_present(void)
+{
+ return via != 0;
+}
+
+struct pmu_i2c_hdr {
+ u8 bus;
+ u8 mode;
+ u8 bus2;
+ u8 address;
+ u8 sub_addr;
+ u8 comb_addr;
+ u8 count;
+};
+
+int
+pmu_i2c_combined_read(int bus, int addr, int subaddr, u8* data, int len)
+{
+ struct adb_request req;
+ struct pmu_i2c_hdr *hdr = (struct pmu_i2c_hdr *)&req.data[1];
+ int retry;
+ int rc;
+
+ for (retry=0; retry<16; retry++) {
+ memset(&req, 0, sizeof(req));
+
+ hdr->bus = bus;
+ hdr->address = addr & 0xfe;
+ hdr->mode = PMU_I2C_MODE_COMBINED;
+ hdr->bus2 = 0;
+ hdr->sub_addr = subaddr;
+ hdr->comb_addr = addr | 1;
+ hdr->count = len;
+
+ req.nbytes = sizeof(struct pmu_i2c_hdr) + 1;
+ req.reply_expected = 0;
+ req.reply_len = 0;
+ req.data[0] = PMU_I2C_CMD;
+ req.reply[0] = 0xff;
+ rc = pmu_queue_request(&req);
+ if (rc)
+ return rc;
+ while(!req.complete)
+ pmu_poll();
+ if (req.reply[0] == PMU_I2C_STATUS_OK)
+ break;
+ mdelay(15);
+ }
+ if (req.reply[0] != PMU_I2C_STATUS_OK)
+ return -1;
+
+ for (retry=0; retry<16; retry++) {
+ memset(&req, 0, sizeof(req));
+
+ mdelay(15);
+
+ hdr->bus = PMU_I2C_BUS_STATUS;
+ req.reply[0] = 0xff;
+
+ req.nbytes = 2;
+ req.reply_expected = 0;
+ req.reply_len = 0;
+ req.data[0] = PMU_I2C_CMD;
+ rc = pmu_queue_request(&req);
+ if (rc)
+ return rc;
+ while(!req.complete)
+ pmu_poll();
+ if (req.reply[0] == PMU_I2C_STATUS_DATAREAD) {
+ memcpy(data, &req.reply[1], req.reply_len - 1);
+ return req.reply_len - 1;
+ }
+ }
+ return -1;
+}
+
+int
+pmu_i2c_stdsub_write(int bus, int addr, int subaddr, u8* data, int len)
+{
+ struct adb_request req;
+ struct pmu_i2c_hdr *hdr = (struct pmu_i2c_hdr *)&req.data[1];
+ int retry;
+ int rc;
+
+ for (retry=0; retry<16; retry++) {
+ memset(&req, 0, sizeof(req));
+
+ hdr->bus = bus;
+ hdr->address = addr & 0xfe;
+ hdr->mode = PMU_I2C_MODE_STDSUB;
+ hdr->bus2 = 0;
+ hdr->sub_addr = subaddr;
+ hdr->comb_addr = addr & 0xfe;
+ hdr->count = len;
+
+ req.data[0] = PMU_I2C_CMD;
+ memcpy(&req.data[sizeof(struct pmu_i2c_hdr) + 1], data, len);
+ req.nbytes = sizeof(struct pmu_i2c_hdr) + len + 1;
+ req.reply_expected = 0;
+ req.reply_len = 0;
+ req.reply[0] = 0xff;
+ rc = pmu_queue_request(&req);
+ if (rc)
+ return rc;
+ while(!req.complete)
+ pmu_poll();
+ if (req.reply[0] == PMU_I2C_STATUS_OK)
+ break;
+ mdelay(15);
+ }
+ if (req.reply[0] != PMU_I2C_STATUS_OK)
+ return -1;
+
+ for (retry=0; retry<16; retry++) {
+ memset(&req, 0, sizeof(req));
+
+ mdelay(15);
+
+ hdr->bus = PMU_I2C_BUS_STATUS;
+ req.reply[0] = 0xff;
+
+ req.nbytes = 2;
+ req.reply_expected = 0;
+ req.reply_len = 0;
+ req.data[0] = PMU_I2C_CMD;
+ rc = pmu_queue_request(&req);
+ if (rc)
+ return rc;
+ while(!req.complete)
+ pmu_poll();
+ if (req.reply[0] == PMU_I2C_STATUS_OK)
+ return len;
+ }
+ return -1;
+}
+
+int
+pmu_i2c_simple_read(int bus, int addr, u8* data, int len)
+{
+ struct adb_request req;
+ struct pmu_i2c_hdr *hdr = (struct pmu_i2c_hdr *)&req.data[1];
+ int retry;
+ int rc;
+
+ for (retry=0; retry<16; retry++) {
+ memset(&req, 0, sizeof(req));
+
+ hdr->bus = bus;
+ hdr->address = addr | 1;
+ hdr->mode = PMU_I2C_MODE_SIMPLE;
+ hdr->bus2 = 0;
+ hdr->sub_addr = 0;
+ hdr->comb_addr = 0;
+ hdr->count = len;
+
+ req.data[0] = PMU_I2C_CMD;
+ req.nbytes = sizeof(struct pmu_i2c_hdr) + 1;
+ req.reply_expected = 0;
+ req.reply_len = 0;
+ req.reply[0] = 0xff;
+ rc = pmu_queue_request(&req);
+ if (rc)
+ return rc;
+ while(!req.complete)
+ pmu_poll();
+ if (req.reply[0] == PMU_I2C_STATUS_OK)
+ break;
+ mdelay(15);
+ }
+ if (req.reply[0] != PMU_I2C_STATUS_OK)
+ return -1;
+
+ for (retry=0; retry<16; retry++) {
+ memset(&req, 0, sizeof(req));
+
+ mdelay(15);
+
+ hdr->bus = PMU_I2C_BUS_STATUS;
+ req.reply[0] = 0xff;
+
+ req.nbytes = 2;
+ req.reply_expected = 0;
+ req.reply_len = 0;
+ req.data[0] = PMU_I2C_CMD;
+ rc = pmu_queue_request(&req);
+ if (rc)
+ return rc;
+ while(!req.complete)
+ pmu_poll();
+ if (req.reply[0] == PMU_I2C_STATUS_DATAREAD) {
+ memcpy(data, &req.reply[1], req.reply_len - 1);
+ return req.reply_len - 1;
+ }
+ }
+ return -1;
+}
+
+int
+pmu_i2c_simple_write(int bus, int addr, u8* data, int len)
+{
+ struct adb_request req;
+ struct pmu_i2c_hdr *hdr = (struct pmu_i2c_hdr *)&req.data[1];
+ int retry;
+ int rc;
+
+ for (retry=0; retry<16; retry++) {
+ memset(&req, 0, sizeof(req));
+
+ hdr->bus = bus;
+ hdr->address = addr & 0xfe;
+ hdr->mode = PMU_I2C_MODE_SIMPLE;
+ hdr->bus2 = 0;
+ hdr->sub_addr = 0;
+ hdr->comb_addr = 0;
+ hdr->count = len;
+
+ req.data[0] = PMU_I2C_CMD;
+ memcpy(&req.data[sizeof(struct pmu_i2c_hdr) + 1], data, len);
+ req.nbytes = sizeof(struct pmu_i2c_hdr) + len + 1;
+ req.reply_expected = 0;
+ req.reply_len = 0;
+ req.reply[0] = 0xff;
+ rc = pmu_queue_request(&req);
+ if (rc)
+ return rc;
+ while(!req.complete)
+ pmu_poll();
+ if (req.reply[0] == PMU_I2C_STATUS_OK)
+ break;
+ mdelay(15);
+ }
+ if (req.reply[0] != PMU_I2C_STATUS_OK)
+ return -1;
+
+ for (retry=0; retry<16; retry++) {
+ memset(&req, 0, sizeof(req));
+
+ mdelay(15);
+
+ hdr->bus = PMU_I2C_BUS_STATUS;
+ req.reply[0] = 0xff;
+
+ req.nbytes = 2;
+ req.reply_expected = 0;
+ req.reply_len = 0;
+ req.data[0] = PMU_I2C_CMD;
+ rc = pmu_queue_request(&req);
+ if (rc)
+ return rc;
+ while(!req.complete)
+ pmu_poll();
+ if (req.reply[0] == PMU_I2C_STATUS_OK)
+ return len;
+ }
+ return -1;
+}
+
+#ifdef CONFIG_PMAC_PBOOK
+
+static LIST_HEAD(sleep_notifiers);
+
+int
+pmu_register_sleep_notifier(struct pmu_sleep_notifier *n)
+{
+ struct list_head *list;
+ struct pmu_sleep_notifier *notifier;
+
+ for (list = sleep_notifiers.next; list != &sleep_notifiers;
+ list = list->next) {
+ notifier = list_entry(list, struct pmu_sleep_notifier, list);
+ if (n->priority > notifier->priority)
+ break;
+ }
+ __list_add(&n->list, list->prev, list);
+ return 0;
+}
+
+int
+pmu_unregister_sleep_notifier(struct pmu_sleep_notifier* n)
+{
+ if (n->list.next == 0)
+ return -ENOENT;
+ list_del(&n->list);
+ n->list.next = NULL;
+ return 0;
+}
+
+/* Sleep is broadcast last-to-first */
+static int __pmac
+broadcast_sleep(int when, int fallback)
+{
+ int ret = PBOOK_SLEEP_OK;
+ struct list_head *list;
+ struct pmu_sleep_notifier *notifier;
+
+ for (list = sleep_notifiers.prev; list != &sleep_notifiers;
+ list = list->prev) {
+ notifier = list_entry(list, struct pmu_sleep_notifier, list);
+ ret = notifier->notifier_call(notifier, when);
+ if (ret != PBOOK_SLEEP_OK) {
+ printk(KERN_DEBUG "sleep %d rejected by %p (%p)\n",
+ when, notifier, notifier->notifier_call);
+ for (; list != &sleep_notifiers; list = list->next) {
+ notifier = list_entry(list, struct pmu_sleep_notifier, list);
+ notifier->notifier_call(notifier, fallback);
+ }
+ return ret;
+ }
+ }
+ return ret;
+}
+
+/* Wake is broadcast first-to-last */
+static int __pmac
+broadcast_wake(void)
+{
+ int ret = PBOOK_SLEEP_OK;
+ struct list_head *list;
+ struct pmu_sleep_notifier *notifier;
+
+ for (list = sleep_notifiers.next; list != &sleep_notifiers;
+ list = list->next) {
+ notifier = list_entry(list, struct pmu_sleep_notifier, list);
+ notifier->notifier_call(notifier, PBOOK_WAKE);
+ }
+ return ret;
+}
+
+/*
+ * This struct is used to store config register values for
+ * PCI devices which may get powered off when we sleep.
+ */
+static struct pci_save {
+#ifndef HACKED_PCI_SAVE
+ u16 command;
+ u16 cache_lat;
+ u16 intr;
+ u32 rom_address;
+#else
+ u32 config[16];
+#endif
+} *pbook_pci_saves;
+static int pbook_npci_saves;
+
+static void __pmac
+pbook_alloc_pci_save(void)
+{
+ int npci;
+ struct pci_dev *pd = NULL;
+
+ npci = 0;
+ while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) {
+ ++npci;
+ }
+ if (npci == 0)
+ return;
+ pbook_pci_saves = (struct pci_save *)
+ kmalloc(npci * sizeof(struct pci_save), GFP_KERNEL);
+ pbook_npci_saves = npci;
+}
+
+static void __pmac
+pbook_free_pci_save(void)
+{
+ if (pbook_pci_saves == NULL)
+ return;
+ kfree(pbook_pci_saves);
+ pbook_pci_saves = NULL;
+ pbook_npci_saves = 0;
+}
+
+static void __pmac
+pbook_pci_save(void)
+{
+ struct pci_save *ps = pbook_pci_saves;
+ struct pci_dev *pd = NULL;
+ int npci = pbook_npci_saves;
+
+ if (ps == NULL)
+ return;
+
+ while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) {
+ if (npci-- == 0)
+ return;
+#ifndef HACKED_PCI_SAVE
+ pci_read_config_word(pd, PCI_COMMAND, &ps->command);
+ pci_read_config_word(pd, PCI_CACHE_LINE_SIZE, &ps->cache_lat);
+ pci_read_config_word(pd, PCI_INTERRUPT_LINE, &ps->intr);
+ pci_read_config_dword(pd, PCI_ROM_ADDRESS, &ps->rom_address);
+#else
+ int i;
+ for (i=1;i<16;i++)
+ pci_read_config_dword(pd, i<<4, &ps->config[i]);
+#endif
+ ++ps;
+ }
+}
+
+/* For this to work, we must take care of a few things: If gmac was enabled
+ * during boot, it will be in the pci dev list. If it's disabled at this point
+ * (and it will probably be), then you can't access it's config space.
+ */
+static void __pmac
+pbook_pci_restore(void)
+{
+ u16 cmd;
+ struct pci_save *ps = pbook_pci_saves - 1;
+ struct pci_dev *pd = NULL;
+ int npci = pbook_npci_saves;
+ int j;
+
+ while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) {
+#ifdef HACKED_PCI_SAVE
+ int i;
+ if (npci-- == 0)
+ return;
+ ps++;
+ for (i=2;i<16;i++)
+ pci_write_config_dword(pd, i<<4, ps->config[i]);
+ pci_write_config_dword(pd, 4, ps->config[1]);
+#else
+ if (npci-- == 0)
+ return;
+ ps++;
+ if (ps->command == 0)
+ continue;
+ pci_read_config_word(pd, PCI_COMMAND, &cmd);
+ if ((ps->command & ~cmd) == 0)
+ continue;
+ switch (pd->hdr_type) {
+ case PCI_HEADER_TYPE_NORMAL:
+ for (j = 0; j < 6; ++j)
+ pci_write_config_dword(pd,
+ PCI_BASE_ADDRESS_0 + j*4,
+ pd->resource[j].start);
+ pci_write_config_dword(pd, PCI_ROM_ADDRESS,
+ ps->rom_address);
+ pci_write_config_word(pd, PCI_CACHE_LINE_SIZE,
+ ps->cache_lat);
+ pci_write_config_word(pd, PCI_INTERRUPT_LINE,
+ ps->intr);
+ pci_write_config_word(pd, PCI_COMMAND, ps->command);
+ break;
+ }
+#endif
+ }
+}
+
+#ifdef DEBUG_SLEEP
+/* N.B. This doesn't work on the 3400 */
+void __pmac
+pmu_blink(int n)
+{
+ struct adb_request req;
+
+ memset(&req, 0, sizeof(req));
+
+ for (; n > 0; --n) {
+ req.nbytes = 4;
+ req.done = NULL;
+ req.data[0] = 0xee;
+ req.data[1] = 4;
+ req.data[2] = 0;
+ req.data[3] = 1;
+ req.reply[0] = ADB_RET_OK;
+ req.reply_len = 1;
+ req.reply_expected = 0;
+ pmu_polled_request(&req);
+ mdelay(50);
+ req.nbytes = 4;
+ req.done = NULL;
+ req.data[0] = 0xee;
+ req.data[1] = 4;
+ req.data[2] = 0;
+ req.data[3] = 0;
+ req.reply[0] = ADB_RET_OK;
+ req.reply_len = 1;
+ req.reply_expected = 0;
+ pmu_polled_request(&req);
+ mdelay(50);
+ }
+ mdelay(50);
+}
+#endif
+
+/*
+ * Put the powerbook to sleep.
+ */
+
+static u32 save_via[8] __pmacdata;
+
+static void __pmac
+save_via_state(void)
+{
+ save_via[0] = in_8(&via[ANH]);
+ save_via[1] = in_8(&via[DIRA]);
+ save_via[2] = in_8(&via[B]);
+ save_via[3] = in_8(&via[DIRB]);
+ save_via[4] = in_8(&via[PCR]);
+ save_via[5] = in_8(&via[ACR]);
+ save_via[6] = in_8(&via[T1CL]);
+ save_via[7] = in_8(&via[T1CH]);
+}
+static void __pmac
+restore_via_state(void)
+{
+ out_8(&via[ANH], save_via[0]);
+ out_8(&via[DIRA], save_via[1]);
+ out_8(&via[B], save_via[2]);
+ out_8(&via[DIRB], save_via[3]);
+ out_8(&via[PCR], save_via[4]);
+ out_8(&via[ACR], save_via[5]);
+ out_8(&via[T1CL], save_via[6]);
+ out_8(&via[T1CH], save_via[7]);
+ out_8(&via[IER], IER_CLR | 0x7f); /* disable all intrs */
+ out_8(&via[IFR], 0x7f); /* clear IFR */
+ out_8(&via[IER], IER_SET | SR_INT | CB1_INT);
+}
+
+static int __pmac
+pmac_suspend_devices(void)
+{
+ int ret;
+
+ pm_prepare_console();
+
+ /* Notify old-style device drivers & userland */
+ ret = broadcast_sleep(PBOOK_SLEEP_REQUEST, PBOOK_SLEEP_REJECT);
+ if (ret != PBOOK_SLEEP_OK) {
+ printk(KERN_ERR "Sleep rejected by drivers\n");
+ return -EBUSY;
+ }
+
+ /* Sync the disks. */
+ /* XXX It would be nice to have some way to ensure that
+ * nobody is dirtying any new buffers while we wait. That
+ * could be achieved using the refrigerator for processes
+ * that swsusp uses
+ */
+ sys_sync();
+
+ /* Sleep can fail now. May not be very robust but useful for debugging */
+ ret = broadcast_sleep(PBOOK_SLEEP_NOW, PBOOK_WAKE);
+ if (ret != PBOOK_SLEEP_OK) {
+ printk(KERN_ERR "Driver sleep failed\n");
+ return -EBUSY;
+ }
+
+ /* Send suspend call to devices, hold the device core's dpm_sem */
+ ret = device_suspend(PMSG_SUSPEND);
+ if (ret) {
+ broadcast_wake();
+ printk(KERN_ERR "Driver sleep failed\n");
+ return -EBUSY;
+ }
+
+ preempt_disable();
+
+ /* Make sure the decrementer won't interrupt us */
+ asm volatile("mtdec %0" : : "r" (0x7fffffff));
+ /* Make sure any pending DEC interrupt occurring while we did
+ * the above didn't re-enable the DEC */
+ mb();
+ asm volatile("mtdec %0" : : "r" (0x7fffffff));
+
+ /* We can now disable MSR_EE. This code of course works properly only
+ * on UP machines... For SMP, if we ever implement sleep, we'll have to
+ * stop the "other" CPUs way before we do all that stuff.
+ */
+ local_irq_disable();
+
+ /* Broadcast power down irq
+ * This isn't that useful in most cases (only directly wired devices can
+ * use this but still... This will take care of sysdev's as well, so
+ * we exit from here with local irqs disabled and PIC off.
+ */
+ ret = device_power_down(PM_SUSPEND_MEM);
+ if (ret) {
+ wakeup_decrementer();
+ local_irq_enable();
+ preempt_enable();
+ device_resume();
+ broadcast_wake();
+ printk(KERN_ERR "Driver powerdown failed\n");
+ return -EBUSY;
+ }
+
+ /* Wait for completion of async backlight requests */
+ while (!bright_req_1.complete || !bright_req_2.complete ||
+ !batt_req.complete)
+ pmu_poll();
+
+ /* Giveup the lazy FPU & vec so we don't have to back them
+ * up from the low level code
+ */
+ enable_kernel_fp();
+
+#ifdef CONFIG_ALTIVEC
+ if (cpu_has_feature(CPU_FTR_ALTIVEC))
+ enable_kernel_altivec();
+#endif /* CONFIG_ALTIVEC */
+
+ return 0;
+}
+
+static int __pmac
+pmac_wakeup_devices(void)
+{
+ mdelay(100);
+
+ /* Power back up system devices (including the PIC) */
+ device_power_up();
+
+ /* Force a poll of ADB interrupts */
+ adb_int_pending = 1;
+ via_pmu_interrupt(0, NULL, NULL);
+
+ /* Restart jiffies & scheduling */
+ wakeup_decrementer();
+
+ /* Re-enable local CPU interrupts */
+ local_irq_enable();
+
+ mdelay(100);
+
+ preempt_enable();
+
+ /* Resume devices */
+ device_resume();
+
+ /* Notify old style drivers */
+ broadcast_wake();
+
+ pm_restore_console();
+
+ return 0;
+}
+
+#define GRACKLE_PM (1<<7)
+#define GRACKLE_DOZE (1<<5)
+#define GRACKLE_NAP (1<<4)
+#define GRACKLE_SLEEP (1<<3)
+
+int __pmac
+powerbook_sleep_grackle(void)
+{
+ unsigned long save_l2cr;
+ unsigned short pmcr1;
+ struct adb_request req;
+ int ret;
+ struct pci_dev *grackle;
+
+ grackle = pci_find_slot(0, 0);
+ if (!grackle)
+ return -ENODEV;
+
+ ret = pmac_suspend_devices();
+ if (ret) {
+ printk(KERN_ERR "Sleep rejected by devices\n");
+ return ret;
+ }
+
+ /* Turn off various things. Darwin does some retry tests here... */
+ pmu_request(&req, NULL, 2, PMU_POWER_CTRL0, PMU_POW0_OFF|PMU_POW0_HARD_DRIVE);
+ pmu_wait_complete(&req);
+ pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
+ PMU_POW_OFF|PMU_POW_BACKLIGHT|PMU_POW_IRLED|PMU_POW_MEDIABAY);
+ pmu_wait_complete(&req);
+
+ /* For 750, save backside cache setting and disable it */
+ save_l2cr = _get_L2CR(); /* (returns -1 if not available) */
+
+ if (!__fake_sleep) {
+ /* Ask the PMU to put us to sleep */
+ pmu_request(&req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T');
+ pmu_wait_complete(&req);
+ }
+
+ /* The VIA is supposed not to be restored correctly*/
+ save_via_state();
+ /* We shut down some HW */
+ pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,1);
+
+ pci_read_config_word(grackle, 0x70, &pmcr1);
+ /* Apparently, MacOS uses NAP mode for Grackle ??? */
+ pmcr1 &= ~(GRACKLE_DOZE|GRACKLE_SLEEP);
+ pmcr1 |= GRACKLE_PM|GRACKLE_NAP;
+ pci_write_config_word(grackle, 0x70, pmcr1);
+
+ /* Call low-level ASM sleep handler */
+ if (__fake_sleep)
+ mdelay(5000);
+ else
+ low_sleep_handler();
+
+ /* We're awake again, stop grackle PM */
+ pci_read_config_word(grackle, 0x70, &pmcr1);
+ pmcr1 &= ~(GRACKLE_PM|GRACKLE_DOZE|GRACKLE_SLEEP|GRACKLE_NAP);
+ pci_write_config_word(grackle, 0x70, pmcr1);
+
+ /* Make sure the PMU is idle */
+ pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,0);
+ restore_via_state();
+
+ /* Restore L2 cache */
+ if (save_l2cr != 0xffffffff && (save_l2cr & L2CR_L2E) != 0)
+ _set_L2CR(save_l2cr);
+
+ /* Restore userland MMU context */
+ set_context(current->active_mm->context, current->active_mm->pgd);
+
+ /* Power things up */
+ pmu_unlock();
+ pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
+ pmu_wait_complete(&req);
+ pmu_request(&req, NULL, 2, PMU_POWER_CTRL0,
+ PMU_POW0_ON|PMU_POW0_HARD_DRIVE);
+ pmu_wait_complete(&req);
+ pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
+ PMU_POW_ON|PMU_POW_BACKLIGHT|PMU_POW_CHARGER|PMU_POW_IRLED|PMU_POW_MEDIABAY);
+ pmu_wait_complete(&req);
+
+ pmac_wakeup_devices();
+
+ return 0;
+}
+
+static int __pmac
+powerbook_sleep_Core99(void)
+{
+ unsigned long save_l2cr;
+ unsigned long save_l3cr;
+ struct adb_request req;
+ int ret;
+
+ if (pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) < 0) {
+ printk(KERN_ERR "Sleep mode not supported on this machine\n");
+ return -ENOSYS;
+ }
+
+ if (num_online_cpus() > 1 || cpu_is_offline(0))
+ return -EAGAIN;
+
+ ret = pmac_suspend_devices();
+ if (ret) {
+ printk(KERN_ERR "Sleep rejected by devices\n");
+ return ret;
+ }
+
+ printk(KERN_DEBUG "HID1, before: %x\n", mfspr(SPRN_HID1));
+
+ /* Tell PMU what events will wake us up */
+ pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, PMU_PWR_CLR_WAKEUP_EVENTS,
+ 0xff, 0xff);
+ pmu_wait_complete(&req);
+ pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, PMU_PWR_SET_WAKEUP_EVENTS,
+ 0, PMU_PWR_WAKEUP_KEY |
+ (option_lid_wakeup ? PMU_PWR_WAKEUP_LID_OPEN : 0));
+ pmu_wait_complete(&req);
+
+ /* Save the state of the L2 and L3 caches */
+ save_l3cr = _get_L3CR(); /* (returns -1 if not available) */
+ save_l2cr = _get_L2CR(); /* (returns -1 if not available) */
+
+ if (!__fake_sleep) {
+ /* Ask the PMU to put us to sleep */
+ pmu_request(&req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T');
+ pmu_wait_complete(&req);
+ }
+
+ /* The VIA is supposed not to be restored correctly*/
+ save_via_state();
+
+ /* Shut down various ASICs. There's a chance that we can no longer
+ * talk to the PMU after this, so I moved it to _after_ sending the
+ * sleep command to it. Still need to be checked.
+ */
+ pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 1);
+
+ /* Call low-level ASM sleep handler */
+ if (__fake_sleep)
+ mdelay(5000);
+ else
+ low_sleep_handler();
+
+ /* Restore Apple core ASICs state */
+ pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 0);
+
+ /* Restore VIA */
+ restore_via_state();
+
+ /* Restore video */
+ pmac_call_early_video_resume();
+
+ /* Restore L2 cache */
+ if (save_l2cr != 0xffffffff && (save_l2cr & L2CR_L2E) != 0)
+ _set_L2CR(save_l2cr);
+ /* Restore L3 cache */
+ if (save_l3cr != 0xffffffff && (save_l3cr & L3CR_L3E) != 0)
+ _set_L3CR(save_l3cr);
+
+ /* Restore userland MMU context */
+ set_context(current->active_mm->context, current->active_mm->pgd);
+
+ /* Tell PMU we are ready */
+ pmu_unlock();
+ pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2);
+ pmu_wait_complete(&req);
+ pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
+ pmu_wait_complete(&req);
+
+ printk(KERN_DEBUG "HID1, after: %x\n", mfspr(SPRN_HID1));
+
+ pmac_wakeup_devices();
+
+ return 0;
+}
+
+#define PB3400_MEM_CTRL 0xf8000000
+#define PB3400_MEM_CTRL_SLEEP 0x70
+
+static int __pmac
+powerbook_sleep_3400(void)
+{
+ int ret, i, x;
+ unsigned int hid0;
+ unsigned long p;
+ struct adb_request sleep_req;
+ void __iomem *mem_ctrl;
+ unsigned int __iomem *mem_ctrl_sleep;
+
+ /* first map in the memory controller registers */
+ mem_ctrl = ioremap(PB3400_MEM_CTRL, 0x100);
+ if (mem_ctrl == NULL) {
+ printk("powerbook_sleep_3400: ioremap failed\n");
+ return -ENOMEM;
+ }
+ mem_ctrl_sleep = mem_ctrl + PB3400_MEM_CTRL_SLEEP;
+
+ /* Allocate room for PCI save */
+ pbook_alloc_pci_save();
+
+ ret = pmac_suspend_devices();
+ if (ret) {
+ pbook_free_pci_save();
+ printk(KERN_ERR "Sleep rejected by devices\n");
+ return ret;
+ }
+
+ /* Save the state of PCI config space for some slots */
+ pbook_pci_save();
+
+ /* Set the memory controller to keep the memory refreshed
+ while we're asleep */
+ for (i = 0x403f; i >= 0x4000; --i) {
+ out_be32(mem_ctrl_sleep, i);
+ do {
+ x = (in_be32(mem_ctrl_sleep) >> 16) & 0x3ff;
+ } while (x == 0);
+ if (x >= 0x100)
+ break;
+ }
+
+ /* Ask the PMU to put us to sleep */
+ pmu_request(&sleep_req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T');
+ while (!sleep_req.complete)
+ mb();
+
+ pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,1);
+
+ /* displacement-flush the L2 cache - necessary? */
+ for (p = KERNELBASE; p < KERNELBASE + 0x100000; p += 0x1000)
+ i = *(volatile int *)p;
+ asleep = 1;
+
+ /* Put the CPU into sleep mode */
+ asm volatile("mfspr %0,1008" : "=r" (hid0) :);
+ hid0 = (hid0 & ~(HID0_NAP | HID0_DOZE)) | HID0_SLEEP;
+ asm volatile("mtspr 1008,%0" : : "r" (hid0));
+ _nmask_and_or_msr(0, MSR_POW | MSR_EE);
+ udelay(10);
+
+ /* OK, we're awake again, start restoring things */
+ out_be32(mem_ctrl_sleep, 0x3f);
+ pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,0);
+ pbook_pci_restore();
+ pmu_unlock();
+
+ /* wait for the PMU interrupt sequence to complete */
+ while (asleep)
+ mb();
+
+ pmac_wakeup_devices();
+ pbook_free_pci_save();
+ iounmap(mem_ctrl);
+
+ return 0;
+}
+
+/*
+ * Support for /dev/pmu device
+ */
+#define RB_SIZE 0x10
+struct pmu_private {
+ struct list_head list;
+ int rb_get;
+ int rb_put;
+ struct rb_entry {
+ unsigned short len;
+ unsigned char data[16];
+ } rb_buf[RB_SIZE];
+ wait_queue_head_t wait;
+ spinlock_t lock;
+#if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
+ int backlight_locker;
+#endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
+};
+
+static LIST_HEAD(all_pmu_pvt);
+static DEFINE_SPINLOCK(all_pvt_lock __pmacdata);
+
+static void __pmac
+pmu_pass_intr(unsigned char *data, int len)
+{
+ struct pmu_private *pp;
+ struct list_head *list;
+ int i;
+ unsigned long flags;
+
+ if (len > sizeof(pp->rb_buf[0].data))
+ len = sizeof(pp->rb_buf[0].data);
+ spin_lock_irqsave(&all_pvt_lock, flags);
+ for (list = &all_pmu_pvt; (list = list->next) != &all_pmu_pvt; ) {
+ pp = list_entry(list, struct pmu_private, list);
+ spin_lock(&pp->lock);
+ i = pp->rb_put + 1;
+ if (i >= RB_SIZE)
+ i = 0;
+ if (i != pp->rb_get) {
+ struct rb_entry *rp = &pp->rb_buf[pp->rb_put];
+ rp->len = len;
+ memcpy(rp->data, data, len);
+ pp->rb_put = i;
+ wake_up_interruptible(&pp->wait);
+ }
+ spin_unlock(&pp->lock);
+ }
+ spin_unlock_irqrestore(&all_pvt_lock, flags);
+}
+
+static int __pmac
+pmu_open(struct inode *inode, struct file *file)
+{
+ struct pmu_private *pp;
+ unsigned long flags;
+
+ pp = kmalloc(sizeof(struct pmu_private), GFP_KERNEL);
+ if (pp == 0)
+ return -ENOMEM;
+ pp->rb_get = pp->rb_put = 0;
+ spin_lock_init(&pp->lock);
+ init_waitqueue_head(&pp->wait);
+ spin_lock_irqsave(&all_pvt_lock, flags);
+#if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
+ pp->backlight_locker = 0;
+#endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
+ list_add(&pp->list, &all_pmu_pvt);
+ spin_unlock_irqrestore(&all_pvt_lock, flags);
+ file->private_data = pp;
+ return 0;
+}
+
+static ssize_t __pmac
+pmu_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct pmu_private *pp = file->private_data;
+ DECLARE_WAITQUEUE(wait, current);
+ unsigned long flags;
+ int ret = 0;
+
+ if (count < 1 || pp == 0)
+ return -EINVAL;
+ if (!access_ok(VERIFY_WRITE, buf, count))
+ return -EFAULT;
+
+ spin_lock_irqsave(&pp->lock, flags);
+ add_wait_queue(&pp->wait, &wait);
+ current->state = TASK_INTERRUPTIBLE;
+
+ for (;;) {
+ ret = -EAGAIN;
+ if (pp->rb_get != pp->rb_put) {
+ int i = pp->rb_get;
+ struct rb_entry *rp = &pp->rb_buf[i];
+ ret = rp->len;
+ spin_unlock_irqrestore(&pp->lock, flags);
+ if (ret > count)
+ ret = count;
+ if (ret > 0 && copy_to_user(buf, rp->data, ret))
+ ret = -EFAULT;
+ if (++i >= RB_SIZE)
+ i = 0;
+ spin_lock_irqsave(&pp->lock, flags);
+ pp->rb_get = i;
+ }
+ if (ret >= 0)
+ break;
+ if (file->f_flags & O_NONBLOCK)
+ break;
+ ret = -ERESTARTSYS;
+ if (signal_pending(current))
+ break;
+ spin_unlock_irqrestore(&pp->lock, flags);
+ schedule();
+ spin_lock_irqsave(&pp->lock, flags);
+ }
+ current->state = TASK_RUNNING;
+ remove_wait_queue(&pp->wait, &wait);
+ spin_unlock_irqrestore(&pp->lock, flags);
+
+ return ret;
+}
+
+static ssize_t __pmac
+pmu_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ return 0;
+}
+
+static unsigned int __pmac
+pmu_fpoll(struct file *filp, poll_table *wait)
+{
+ struct pmu_private *pp = filp->private_data;
+ unsigned int mask = 0;
+ unsigned long flags;
+
+ if (pp == 0)
+ return 0;
+ poll_wait(filp, &pp->wait, wait);
+ spin_lock_irqsave(&pp->lock, flags);
+ if (pp->rb_get != pp->rb_put)
+ mask |= POLLIN;
+ spin_unlock_irqrestore(&pp->lock, flags);
+ return mask;
+}
+
+static int __pmac
+pmu_release(struct inode *inode, struct file *file)
+{
+ struct pmu_private *pp = file->private_data;
+ unsigned long flags;
+
+ lock_kernel();
+ if (pp != 0) {
+ file->private_data = NULL;
+ spin_lock_irqsave(&all_pvt_lock, flags);
+ list_del(&pp->list);
+ spin_unlock_irqrestore(&all_pvt_lock, flags);
+#if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
+ if (pp->backlight_locker) {
+ spin_lock_irqsave(&pmu_lock, flags);
+ disable_kernel_backlight--;
+ spin_unlock_irqrestore(&pmu_lock, flags);
+ }
+#endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
+ kfree(pp);
+ }
+ unlock_kernel();
+ return 0;
+}
+
+/* Note: removed __openfirmware here since it causes link errors */
+static int __pmac
+pmu_ioctl(struct inode * inode, struct file *filp,
+ u_int cmd, u_long arg)
+{
+ struct pmu_private *pp = filp->private_data;
+ __u32 __user *argp = (__u32 __user *)arg;
+ int error;
+
+ switch (cmd) {
+ case PMU_IOC_SLEEP:
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+ if (sleep_in_progress)
+ return -EBUSY;
+ sleep_in_progress = 1;
+ switch (pmu_kind) {
+ case PMU_OHARE_BASED:
+ error = powerbook_sleep_3400();
+ break;
+ case PMU_HEATHROW_BASED:
+ case PMU_PADDINGTON_BASED:
+ error = powerbook_sleep_grackle();
+ break;
+ case PMU_KEYLARGO_BASED:
+ error = powerbook_sleep_Core99();
+ break;
+ default:
+ error = -ENOSYS;
+ }
+ sleep_in_progress = 0;
+ return error;
+ case PMU_IOC_CAN_SLEEP:
+ if (pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) < 0)
+ return put_user(0, argp);
+ else
+ return put_user(1, argp);
+
+#ifdef CONFIG_PMAC_BACKLIGHT
+ /* Backlight should have its own device or go via
+ * the fbdev
+ */
+ case PMU_IOC_GET_BACKLIGHT:
+ if (sleep_in_progress)
+ return -EBUSY;
+ error = get_backlight_level();
+ if (error < 0)
+ return error;
+ return put_user(error, argp);
+ case PMU_IOC_SET_BACKLIGHT:
+ {
+ __u32 value;
+ if (sleep_in_progress)
+ return -EBUSY;
+ error = get_user(value, argp);
+ if (!error)
+ error = set_backlight_level(value);
+ return error;
+ }
+#ifdef CONFIG_INPUT_ADBHID
+ case PMU_IOC_GRAB_BACKLIGHT: {
+ unsigned long flags;
+ if (pp->backlight_locker)
+ return 0;
+ pp->backlight_locker = 1;
+ spin_lock_irqsave(&pmu_lock, flags);
+ disable_kernel_backlight++;
+ spin_unlock_irqrestore(&pmu_lock, flags);
+ return 0;
+ }
+#endif /* CONFIG_INPUT_ADBHID */
+#endif /* CONFIG_PMAC_BACKLIGHT */
+ case PMU_IOC_GET_MODEL:
+ return put_user(pmu_kind, argp);
+ case PMU_IOC_HAS_ADB:
+ return put_user(pmu_has_adb, argp);
+ }
+ return -EINVAL;
+}
+
+static struct file_operations pmu_device_fops __pmacdata = {
+ .read = pmu_read,
+ .write = pmu_write,
+ .poll = pmu_fpoll,
+ .ioctl = pmu_ioctl,
+ .open = pmu_open,
+ .release = pmu_release,
+};
+
+static struct miscdevice pmu_device __pmacdata = {
+ PMU_MINOR, "pmu", &pmu_device_fops
+};
+
+void pmu_device_init(void)
+{
+ if (!via)
+ return;
+ if (misc_register(&pmu_device) < 0)
+ printk(KERN_ERR "via-pmu: cannot register misc device.\n");
+}
+#endif /* CONFIG_PMAC_PBOOK */
+
+#ifdef DEBUG_SLEEP
+static inline void __pmac
+polled_handshake(volatile unsigned char __iomem *via)
+{
+ via[B] &= ~TREQ; eieio();
+ while ((via[B] & TACK) != 0)
+ ;
+ via[B] |= TREQ; eieio();
+ while ((via[B] & TACK) == 0)
+ ;
+}
+
+static inline void __pmac
+polled_send_byte(volatile unsigned char __iomem *via, int x)
+{
+ via[ACR] |= SR_OUT | SR_EXT; eieio();
+ via[SR] = x; eieio();
+ polled_handshake(via);
+}
+
+static inline int __pmac
+polled_recv_byte(volatile unsigned char __iomem *via)
+{
+ int x;
+
+ via[ACR] = (via[ACR] & ~SR_OUT) | SR_EXT; eieio();
+ x = via[SR]; eieio();
+ polled_handshake(via);
+ x = via[SR]; eieio();
+ return x;
+}
+
+int __pmac
+pmu_polled_request(struct adb_request *req)
+{
+ unsigned long flags;
+ int i, l, c;
+ volatile unsigned char __iomem *v = via;
+
+ req->complete = 1;
+ c = req->data[0];
+ l = pmu_data_len[c][0];
+ if (l >= 0 && req->nbytes != l + 1)
+ return -EINVAL;
+
+ local_irq_save(flags);
+ while (pmu_state != idle)
+ pmu_poll();
+
+ while ((via[B] & TACK) == 0)
+ ;
+ polled_send_byte(v, c);
+ if (l < 0) {
+ l = req->nbytes - 1;
+ polled_send_byte(v, l);
+ }
+ for (i = 1; i <= l; ++i)
+ polled_send_byte(v, req->data[i]);
+
+ l = pmu_data_len[c][1];
+ if (l < 0)
+ l = polled_recv_byte(v);
+ for (i = 0; i < l; ++i)
+ req->reply[i + req->reply_len] = polled_recv_byte(v);
+
+ if (req->done)
+ (*req->done)(req);
+
+ local_irq_restore(flags);
+ return 0;
+}
+#endif /* DEBUG_SLEEP */
+
+
+/* FIXME: This is a temporary set of callbacks to enable us
+ * to do suspend-to-disk.
+ */
+
+#ifdef CONFIG_PM
+
+static int pmu_sys_suspended = 0;
+
+static int pmu_sys_suspend(struct sys_device *sysdev, u32 state)
+{
+ if (state != PM_SUSPEND_DISK || pmu_sys_suspended)
+ return 0;
+
+ /* Suspend PMU event interrupts */
+ pmu_suspend();
+
+ pmu_sys_suspended = 1;
+ return 0;
+}
+
+static int pmu_sys_resume(struct sys_device *sysdev)
+{
+ struct adb_request req;
+
+ if (!pmu_sys_suspended)
+ return 0;
+
+ /* Tell PMU we are ready */
+ pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2);
+ pmu_wait_complete(&req);
+
+ /* Resume PMU event interrupts */
+ pmu_resume();
+
+ pmu_sys_suspended = 0;
+
+ return 0;
+}
+
+#endif /* CONFIG_PM */
+
+static struct sysdev_class pmu_sysclass = {
+ set_kset_name("pmu"),
+};
+
+static struct sys_device device_pmu = {
+ .id = 0,
+ .cls = &pmu_sysclass,
+};
+
+static struct sysdev_driver driver_pmu = {
+#ifdef CONFIG_PM
+ .suspend = &pmu_sys_suspend,
+ .resume = &pmu_sys_resume,
+#endif /* CONFIG_PM */
+};
+
+static int __init init_pmu_sysfs(void)
+{
+ int rc;
+
+ rc = sysdev_class_register(&pmu_sysclass);
+ if (rc) {
+ printk(KERN_ERR "Failed registering PMU sys class\n");
+ return -ENODEV;
+ }
+ rc = sysdev_register(&device_pmu);
+ if (rc) {
+ printk(KERN_ERR "Failed registering PMU sys device\n");
+ return -ENODEV;
+ }
+ rc = sysdev_driver_register(&pmu_sysclass, &driver_pmu);
+ if (rc) {
+ printk(KERN_ERR "Failed registering PMU sys driver\n");
+ return -ENODEV;
+ }
+ return 0;
+}
+
+subsys_initcall(init_pmu_sysfs);
+
+EXPORT_SYMBOL(pmu_request);
+EXPORT_SYMBOL(pmu_poll);
+EXPORT_SYMBOL(pmu_poll_adb);
+EXPORT_SYMBOL(pmu_wait_complete);
+EXPORT_SYMBOL(pmu_suspend);
+EXPORT_SYMBOL(pmu_resume);
+EXPORT_SYMBOL(pmu_unlock);
+EXPORT_SYMBOL(pmu_i2c_combined_read);
+EXPORT_SYMBOL(pmu_i2c_stdsub_write);
+EXPORT_SYMBOL(pmu_i2c_simple_read);
+EXPORT_SYMBOL(pmu_i2c_simple_write);
+#ifdef CONFIG_PMAC_PBOOK
+EXPORT_SYMBOL(pmu_register_sleep_notifier);
+EXPORT_SYMBOL(pmu_unregister_sleep_notifier);
+EXPORT_SYMBOL(pmu_enable_irled);
+EXPORT_SYMBOL(pmu_battery_count);
+EXPORT_SYMBOL(pmu_batteries);
+EXPORT_SYMBOL(pmu_power_flags);
+#endif /* CONFIG_PMAC_PBOOK */
+
diff --git a/drivers/macintosh/via-pmu68k.c b/drivers/macintosh/via-pmu68k.c
new file mode 100644
index 000000000000..820dc52e30bc
--- /dev/null
+++ b/drivers/macintosh/via-pmu68k.c
@@ -0,0 +1,1063 @@
+/*
+ * Device driver for the PMU on 68K-based Apple PowerBooks
+ *
+ * The VIA (versatile interface adapter) interfaces to the PMU,
+ * a 6805 microprocessor core whose primary function is to control
+ * battery charging and system power on the PowerBooks.
+ * The PMU also controls the ADB (Apple Desktop Bus) which connects
+ * to the keyboard and mouse, as well as the non-volatile RAM
+ * and the RTC (real time clock) chip.
+ *
+ * Adapted for 68K PMU by Joshua M. Thompson
+ *
+ * Based largely on the PowerMac PMU code by Paul Mackerras and
+ * Fabio Riccardi.
+ *
+ * Also based on the PMU driver from MkLinux by Apple Computer, Inc.
+ * and the Open Software Foundation, Inc.
+ */
+
+#include <stdarg.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/miscdevice.h>
+#include <linux/blkdev.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+
+#include <linux/adb.h>
+#include <linux/pmu.h>
+#include <linux/cuda.h>
+
+#include <asm/macintosh.h>
+#include <asm/macints.h>
+#include <asm/machw.h>
+#include <asm/mac_via.h>
+
+#include <asm/pgtable.h>
+#include <asm/system.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+
+/* Misc minor number allocated for /dev/pmu */
+#define PMU_MINOR 154
+
+/* VIA registers - spaced 0x200 bytes apart */
+#define RS 0x200 /* skip between registers */
+#define B 0 /* B-side data */
+#define A RS /* A-side data */
+#define DIRB (2*RS) /* B-side direction (1=output) */
+#define DIRA (3*RS) /* A-side direction (1=output) */
+#define T1CL (4*RS) /* Timer 1 ctr/latch (low 8 bits) */
+#define T1CH (5*RS) /* Timer 1 counter (high 8 bits) */
+#define T1LL (6*RS) /* Timer 1 latch (low 8 bits) */
+#define T1LH (7*RS) /* Timer 1 latch (high 8 bits) */
+#define T2CL (8*RS) /* Timer 2 ctr/latch (low 8 bits) */
+#define T2CH (9*RS) /* Timer 2 counter (high 8 bits) */
+#define SR (10*RS) /* Shift register */
+#define ACR (11*RS) /* Auxiliary control register */
+#define PCR (12*RS) /* Peripheral control register */
+#define IFR (13*RS) /* Interrupt flag register */
+#define IER (14*RS) /* Interrupt enable register */
+#define ANH (15*RS) /* A-side data, no handshake */
+
+/* Bits in B data register: both active low */
+#define TACK 0x02 /* Transfer acknowledge (input) */
+#define TREQ 0x04 /* Transfer request (output) */
+
+/* Bits in ACR */
+#define SR_CTRL 0x1c /* Shift register control bits */
+#define SR_EXT 0x0c /* Shift on external clock */
+#define SR_OUT 0x10 /* Shift out if 1 */
+
+/* Bits in IFR and IER */
+#define SR_INT 0x04 /* Shift register full/empty */
+#define CB1_INT 0x10 /* transition on CB1 input */
+
+static enum pmu_state {
+ idle,
+ sending,
+ intack,
+ reading,
+ reading_intr,
+} pmu_state;
+
+static struct adb_request *current_req;
+static struct adb_request *last_req;
+static struct adb_request *req_awaiting_reply;
+static unsigned char interrupt_data[32];
+static unsigned char *reply_ptr;
+static int data_index;
+static int data_len;
+static int adb_int_pending;
+static int pmu_adb_flags;
+static int adb_dev_map = 0;
+static struct adb_request bright_req_1, bright_req_2, bright_req_3;
+static int pmu_kind = PMU_UNKNOWN;
+static int pmu_fully_inited = 0;
+
+int asleep;
+struct notifier_block *sleep_notifier_list;
+
+static int pmu_probe(void);
+static int pmu_init(void);
+static void pmu_start(void);
+static irqreturn_t pmu_interrupt(int irq, void *arg, struct pt_regs *regs);
+static int pmu_send_request(struct adb_request *req, int sync);
+static int pmu_autopoll(int devs);
+void pmu_poll(void);
+static int pmu_reset_bus(void);
+static int pmu_queue_request(struct adb_request *req);
+
+static void pmu_start(void);
+static void send_byte(int x);
+static void recv_byte(void);
+static void pmu_done(struct adb_request *req);
+static void pmu_handle_data(unsigned char *data, int len,
+ struct pt_regs *regs);
+static void set_volume(int level);
+static void pmu_enable_backlight(int on);
+static void pmu_set_brightness(int level);
+
+struct adb_driver via_pmu_driver = {
+ "68K PMU",
+ pmu_probe,
+ pmu_init,
+ pmu_send_request,
+ pmu_autopoll,
+ pmu_poll,
+ pmu_reset_bus
+};
+
+/*
+ * This table indicates for each PMU opcode:
+ * - the number of data bytes to be sent with the command, or -1
+ * if a length byte should be sent,
+ * - the number of response bytes which the PMU will return, or
+ * -1 if it will send a length byte.
+ */
+static s8 pmu_data_len[256][2] = {
+/* 0 1 2 3 4 5 6 7 */
+/*00*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*08*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
+/*10*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*18*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0, 0},
+/*20*/ {-1, 0},{ 0, 0},{ 2, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*28*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0,-1},
+/*30*/ { 4, 0},{20, 0},{-1, 0},{ 3, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*38*/ { 0, 4},{ 0,20},{ 2,-1},{ 2, 1},{ 3,-1},{-1,-1},{-1,-1},{ 4, 0},
+/*40*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*48*/ { 0, 1},{ 0, 1},{-1,-1},{ 1, 0},{ 1, 0},{-1,-1},{-1,-1},{-1,-1},
+/*50*/ { 1, 0},{ 0, 0},{ 2, 0},{ 2, 0},{-1, 0},{ 1, 0},{ 3, 0},{ 1, 0},
+/*58*/ { 0, 1},{ 1, 0},{ 0, 2},{ 0, 2},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},
+/*60*/ { 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*68*/ { 0, 3},{ 0, 3},{ 0, 2},{ 0, 8},{ 0,-1},{ 0,-1},{-1,-1},{-1,-1},
+/*70*/ { 1, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*78*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{ 5, 1},{ 4, 1},{ 4, 1},
+/*80*/ { 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*88*/ { 0, 5},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
+/*90*/ { 1, 0},{ 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*98*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
+/*a0*/ { 2, 0},{ 2, 0},{ 2, 0},{ 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},
+/*a8*/ { 1, 1},{ 1, 0},{ 3, 0},{ 2, 0},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
+/*b0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*b8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
+/*c0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*c8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
+/*d0*/ { 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*d8*/ { 1, 1},{ 1, 1},{-1,-1},{-1,-1},{ 0, 1},{ 0,-1},{-1,-1},{-1,-1},
+/*e0*/ {-1, 0},{ 4, 0},{ 0, 1},{-1, 0},{-1, 0},{ 4, 0},{-1, 0},{-1, 0},
+/*e8*/ { 3,-1},{-1,-1},{ 0, 1},{-1,-1},{ 0,-1},{-1,-1},{-1,-1},{ 0, 0},
+/*f0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
+/*f8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
+};
+
+int pmu_probe(void)
+{
+ if (macintosh_config->adb_type == MAC_ADB_PB1) {
+ pmu_kind = PMU_68K_V1;
+ } else if (macintosh_config->adb_type == MAC_ADB_PB2) {
+ pmu_kind = PMU_68K_V2;
+ } else {
+ return -ENODEV;
+ }
+
+ pmu_state = idle;
+
+ return 0;
+}
+
+static int
+pmu_init(void)
+{
+ int timeout;
+ volatile struct adb_request req;
+
+ via2[B] |= TREQ; /* negate TREQ */
+ via2[DIRB] = (via2[DIRB] | TREQ) & ~TACK; /* TACK in, TREQ out */
+
+ pmu_request((struct adb_request *) &req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB);
+ timeout = 100000;
+ while (!req.complete) {
+ if (--timeout < 0) {
+ printk(KERN_ERR "pmu_init: no response from PMU\n");
+ return -EAGAIN;
+ }
+ udelay(10);
+ pmu_poll();
+ }
+
+ /* ack all pending interrupts */
+ timeout = 100000;
+ interrupt_data[0] = 1;
+ while (interrupt_data[0] || pmu_state != idle) {
+ if (--timeout < 0) {
+ printk(KERN_ERR "pmu_init: timed out acking intrs\n");
+ return -EAGAIN;
+ }
+ if (pmu_state == idle) {
+ adb_int_pending = 1;
+ pmu_interrupt(0, NULL, NULL);
+ }
+ pmu_poll();
+ udelay(10);
+ }
+
+ pmu_request((struct adb_request *) &req, NULL, 2, PMU_SET_INTR_MASK,
+ PMU_INT_ADB_AUTO|PMU_INT_SNDBRT|PMU_INT_ADB);
+ timeout = 100000;
+ while (!req.complete) {
+ if (--timeout < 0) {
+ printk(KERN_ERR "pmu_init: no response from PMU\n");
+ return -EAGAIN;
+ }
+ udelay(10);
+ pmu_poll();
+ }
+
+ bright_req_1.complete = 1;
+ bright_req_2.complete = 1;
+ bright_req_3.complete = 1;
+
+ if (request_irq(IRQ_MAC_ADB_SR, pmu_interrupt, 0, "pmu-shift",
+ pmu_interrupt)) {
+ printk(KERN_ERR "pmu_init: can't get irq %d\n",
+ IRQ_MAC_ADB_SR);
+ return -EAGAIN;
+ }
+ if (request_irq(IRQ_MAC_ADB_CL, pmu_interrupt, 0, "pmu-clock",
+ pmu_interrupt)) {
+ printk(KERN_ERR "pmu_init: can't get irq %d\n",
+ IRQ_MAC_ADB_CL);
+ free_irq(IRQ_MAC_ADB_SR, pmu_interrupt);
+ return -EAGAIN;
+ }
+
+ pmu_fully_inited = 1;
+
+ /* Enable backlight */
+ pmu_enable_backlight(1);
+
+ printk("adb: PMU 68K driver v0.5 for Unified ADB.\n");
+
+ return 0;
+}
+
+int
+pmu_get_model(void)
+{
+ return pmu_kind;
+}
+
+/* Send an ADB command */
+static int
+pmu_send_request(struct adb_request *req, int sync)
+{
+ int i, ret;
+
+ if (!pmu_fully_inited)
+ {
+ req->complete = 1;
+ return -ENXIO;
+ }
+
+ ret = -EINVAL;
+
+ switch (req->data[0]) {
+ case PMU_PACKET:
+ for (i = 0; i < req->nbytes - 1; ++i)
+ req->data[i] = req->data[i+1];
+ --req->nbytes;
+ if (pmu_data_len[req->data[0]][1] != 0) {
+ req->reply[0] = ADB_RET_OK;
+ req->reply_len = 1;
+ } else
+ req->reply_len = 0;
+ ret = pmu_queue_request(req);
+ break;
+ case CUDA_PACKET:
+ switch (req->data[1]) {
+ case CUDA_GET_TIME:
+ if (req->nbytes != 2)
+ break;
+ req->data[0] = PMU_READ_RTC;
+ req->nbytes = 1;
+ req->reply_len = 3;
+ req->reply[0] = CUDA_PACKET;
+ req->reply[1] = 0;
+ req->reply[2] = CUDA_GET_TIME;
+ ret = pmu_queue_request(req);
+ break;
+ case CUDA_SET_TIME:
+ if (req->nbytes != 6)
+ break;
+ req->data[0] = PMU_SET_RTC;
+ req->nbytes = 5;
+ for (i = 1; i <= 4; ++i)
+ req->data[i] = req->data[i+1];
+ req->reply_len = 3;
+ req->reply[0] = CUDA_PACKET;
+ req->reply[1] = 0;
+ req->reply[2] = CUDA_SET_TIME;
+ ret = pmu_queue_request(req);
+ break;
+ case CUDA_GET_PRAM:
+ if (req->nbytes != 4)
+ break;
+ req->data[0] = PMU_READ_NVRAM;
+ req->data[1] = req->data[2];
+ req->data[2] = req->data[3];
+ req->nbytes = 3;
+ req->reply_len = 3;
+ req->reply[0] = CUDA_PACKET;
+ req->reply[1] = 0;
+ req->reply[2] = CUDA_GET_PRAM;
+ ret = pmu_queue_request(req);
+ break;
+ case CUDA_SET_PRAM:
+ if (req->nbytes != 5)
+ break;
+ req->data[0] = PMU_WRITE_NVRAM;
+ req->data[1] = req->data[2];
+ req->data[2] = req->data[3];
+ req->data[3] = req->data[4];
+ req->nbytes = 4;
+ req->reply_len = 3;
+ req->reply[0] = CUDA_PACKET;
+ req->reply[1] = 0;
+ req->reply[2] = CUDA_SET_PRAM;
+ ret = pmu_queue_request(req);
+ break;
+ }
+ break;
+ case ADB_PACKET:
+ for (i = req->nbytes - 1; i > 1; --i)
+ req->data[i+2] = req->data[i];
+ req->data[3] = req->nbytes - 2;
+ req->data[2] = pmu_adb_flags;
+ /*req->data[1] = req->data[1];*/
+ req->data[0] = PMU_ADB_CMD;
+ req->nbytes += 2;
+ req->reply_expected = 1;
+ req->reply_len = 0;
+ ret = pmu_queue_request(req);
+ break;
+ }
+ if (ret)
+ {
+ req->complete = 1;
+ return ret;
+ }
+
+ if (sync) {
+ while (!req->complete)
+ pmu_poll();
+ }
+
+ return 0;
+}
+
+/* Enable/disable autopolling */
+static int
+pmu_autopoll(int devs)
+{
+ struct adb_request req;
+
+ if (!pmu_fully_inited) return -ENXIO;
+
+ if (devs) {
+ adb_dev_map = devs;
+ pmu_request(&req, NULL, 5, PMU_ADB_CMD, 0, 0x86,
+ adb_dev_map >> 8, adb_dev_map);
+ pmu_adb_flags = 2;
+ } else {
+ pmu_request(&req, NULL, 1, PMU_ADB_POLL_OFF);
+ pmu_adb_flags = 0;
+ }
+ while (!req.complete)
+ pmu_poll();
+ return 0;
+}
+
+/* Reset the ADB bus */
+static int
+pmu_reset_bus(void)
+{
+ struct adb_request req;
+ long timeout;
+ int save_autopoll = adb_dev_map;
+
+ if (!pmu_fully_inited) return -ENXIO;
+
+ /* anyone got a better idea?? */
+ pmu_autopoll(0);
+
+ req.nbytes = 5;
+ req.done = NULL;
+ req.data[0] = PMU_ADB_CMD;
+ req.data[1] = 0;
+ req.data[2] = 3; /* ADB_BUSRESET ??? */
+ req.data[3] = 0;
+ req.data[4] = 0;
+ req.reply_len = 0;
+ req.reply_expected = 1;
+ if (pmu_queue_request(&req) != 0)
+ {
+ printk(KERN_ERR "pmu_adb_reset_bus: pmu_queue_request failed\n");
+ return -EIO;
+ }
+ while (!req.complete)
+ pmu_poll();
+ timeout = 100000;
+ while (!req.complete) {
+ if (--timeout < 0) {
+ printk(KERN_ERR "pmu_adb_reset_bus (reset): no response from PMU\n");
+ return -EIO;
+ }
+ udelay(10);
+ pmu_poll();
+ }
+
+ if (save_autopoll != 0)
+ pmu_autopoll(save_autopoll);
+
+ return 0;
+}
+
+/* Construct and send a pmu request */
+int
+pmu_request(struct adb_request *req, void (*done)(struct adb_request *),
+ int nbytes, ...)
+{
+ va_list list;
+ int i;
+
+ if (nbytes < 0 || nbytes > 32) {
+ printk(KERN_ERR "pmu_request: bad nbytes (%d)\n", nbytes);
+ req->complete = 1;
+ return -EINVAL;
+ }
+ req->nbytes = nbytes;
+ req->done = done;
+ va_start(list, nbytes);
+ for (i = 0; i < nbytes; ++i)
+ req->data[i] = va_arg(list, int);
+ va_end(list);
+ if (pmu_data_len[req->data[0]][1] != 0) {
+ req->reply[0] = ADB_RET_OK;
+ req->reply_len = 1;
+ } else
+ req->reply_len = 0;
+ req->reply_expected = 0;
+ return pmu_queue_request(req);
+}
+
+static int
+pmu_queue_request(struct adb_request *req)
+{
+ unsigned long flags;
+ int nsend;
+
+ if (req->nbytes <= 0) {
+ req->complete = 1;
+ return 0;
+ }
+ nsend = pmu_data_len[req->data[0]][0];
+ if (nsend >= 0 && req->nbytes != nsend + 1) {
+ req->complete = 1;
+ return -EINVAL;
+ }
+
+ req->next = 0;
+ req->sent = 0;
+ req->complete = 0;
+ local_irq_save(flags);
+
+ if (current_req != 0) {
+ last_req->next = req;
+ last_req = req;
+ } else {
+ current_req = req;
+ last_req = req;
+ if (pmu_state == idle)
+ pmu_start();
+ }
+
+ local_irq_restore(flags);
+ return 0;
+}
+
+static void
+send_byte(int x)
+{
+ via1[ACR] |= SR_CTRL;
+ via1[SR] = x;
+ via2[B] &= ~TREQ; /* assert TREQ */
+}
+
+static void
+recv_byte(void)
+{
+ char c;
+
+ via1[ACR] = (via1[ACR] | SR_EXT) & ~SR_OUT;
+ c = via1[SR]; /* resets SR */
+ via2[B] &= ~TREQ;
+}
+
+static void
+pmu_start(void)
+{
+ unsigned long flags;
+ struct adb_request *req;
+
+ /* assert pmu_state == idle */
+ /* get the packet to send */
+ local_irq_save(flags);
+ req = current_req;
+ if (req == 0 || pmu_state != idle
+ || (req->reply_expected && req_awaiting_reply))
+ goto out;
+
+ pmu_state = sending;
+ data_index = 1;
+ data_len = pmu_data_len[req->data[0]][0];
+
+ /* set the shift register to shift out and send a byte */
+ send_byte(req->data[0]);
+
+out:
+ local_irq_restore(flags);
+}
+
+void
+pmu_poll(void)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ if (via1[IFR] & SR_INT) {
+ via1[IFR] = SR_INT;
+ pmu_interrupt(IRQ_MAC_ADB_SR, NULL, NULL);
+ }
+ if (via1[IFR] & CB1_INT) {
+ via1[IFR] = CB1_INT;
+ pmu_interrupt(IRQ_MAC_ADB_CL, NULL, NULL);
+ }
+ local_irq_restore(flags);
+}
+
+static irqreturn_t
+pmu_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct adb_request *req;
+ int timeout, bite = 0; /* to prevent compiler warning */
+
+#if 0
+ printk("pmu_interrupt: irq %d state %d acr %02X, b %02X data_index %d/%d adb_int_pending %d\n",
+ irq, pmu_state, (uint) via1[ACR], (uint) via2[B], data_index, data_len, adb_int_pending);
+#endif
+
+ if (irq == IRQ_MAC_ADB_CL) { /* CB1 interrupt */
+ adb_int_pending = 1;
+ } else if (irq == IRQ_MAC_ADB_SR) { /* SR interrupt */
+ if (via2[B] & TACK) {
+ printk(KERN_DEBUG "PMU: SR_INT but ack still high! (%x)\n", via2[B]);
+ }
+
+ /* if reading grab the byte */
+ if ((via1[ACR] & SR_OUT) == 0) bite = via1[SR];
+
+ /* reset TREQ and wait for TACK to go high */
+ via2[B] |= TREQ;
+ timeout = 3200;
+ while (!(via2[B] & TACK)) {
+ if (--timeout < 0) {
+ printk(KERN_ERR "PMU not responding (!ack)\n");
+ goto finish;
+ }
+ udelay(10);
+ }
+
+ switch (pmu_state) {
+ case sending:
+ req = current_req;
+ if (data_len < 0) {
+ data_len = req->nbytes - 1;
+ send_byte(data_len);
+ break;
+ }
+ if (data_index <= data_len) {
+ send_byte(req->data[data_index++]);
+ break;
+ }
+ req->sent = 1;
+ data_len = pmu_data_len[req->data[0]][1];
+ if (data_len == 0) {
+ pmu_state = idle;
+ current_req = req->next;
+ if (req->reply_expected)
+ req_awaiting_reply = req;
+ else
+ pmu_done(req);
+ } else {
+ pmu_state = reading;
+ data_index = 0;
+ reply_ptr = req->reply + req->reply_len;
+ recv_byte();
+ }
+ break;
+
+ case intack:
+ data_index = 0;
+ data_len = -1;
+ pmu_state = reading_intr;
+ reply_ptr = interrupt_data;
+ recv_byte();
+ break;
+
+ case reading:
+ case reading_intr:
+ if (data_len == -1) {
+ data_len = bite;
+ if (bite > 32)
+ printk(KERN_ERR "PMU: bad reply len %d\n",
+ bite);
+ } else {
+ reply_ptr[data_index++] = bite;
+ }
+ if (data_index < data_len) {
+ recv_byte();
+ break;
+ }
+
+ if (pmu_state == reading_intr) {
+ pmu_handle_data(interrupt_data, data_index, regs);
+ } else {
+ req = current_req;
+ current_req = req->next;
+ req->reply_len += data_index;
+ pmu_done(req);
+ }
+ pmu_state = idle;
+
+ break;
+
+ default:
+ printk(KERN_ERR "pmu_interrupt: unknown state %d?\n",
+ pmu_state);
+ }
+ }
+finish:
+ if (pmu_state == idle) {
+ if (adb_int_pending) {
+ pmu_state = intack;
+ send_byte(PMU_INT_ACK);
+ adb_int_pending = 0;
+ } else if (current_req) {
+ pmu_start();
+ }
+ }
+
+#if 0
+ printk("pmu_interrupt: exit state %d acr %02X, b %02X data_index %d/%d adb_int_pending %d\n",
+ pmu_state, (uint) via1[ACR], (uint) via2[B], data_index, data_len, adb_int_pending);
+#endif
+ return IRQ_HANDLED;
+}
+
+static void
+pmu_done(struct adb_request *req)
+{
+ req->complete = 1;
+ if (req->done)
+ (*req->done)(req);
+}
+
+/* Interrupt data could be the result data from an ADB cmd */
+static void
+pmu_handle_data(unsigned char *data, int len, struct pt_regs *regs)
+{
+ static int show_pmu_ints = 1;
+
+ asleep = 0;
+ if (len < 1) {
+ adb_int_pending = 0;
+ return;
+ }
+ if (data[0] & PMU_INT_ADB) {
+ if ((data[0] & PMU_INT_ADB_AUTO) == 0) {
+ struct adb_request *req = req_awaiting_reply;
+ if (req == 0) {
+ printk(KERN_ERR "PMU: extra ADB reply\n");
+ return;
+ }
+ req_awaiting_reply = 0;
+ if (len <= 2)
+ req->reply_len = 0;
+ else {
+ memcpy(req->reply, data + 1, len - 1);
+ req->reply_len = len - 1;
+ }
+ pmu_done(req);
+ } else {
+ adb_input(data+1, len-1, regs, 1);
+ }
+ } else {
+ if (data[0] == 0x08 && len == 3) {
+ /* sound/brightness buttons pressed */
+ pmu_set_brightness(data[1] >> 3);
+ set_volume(data[2]);
+ } else if (show_pmu_ints
+ && !(data[0] == PMU_INT_TICK && len == 1)) {
+ int i;
+ printk(KERN_DEBUG "pmu intr");
+ for (i = 0; i < len; ++i)
+ printk(" %.2x", data[i]);
+ printk("\n");
+ }
+ }
+}
+
+int backlight_level = -1;
+int backlight_enabled = 0;
+
+#define LEVEL_TO_BRIGHT(lev) ((lev) < 1? 0x7f: 0x4a - ((lev) << 1))
+
+static void
+pmu_enable_backlight(int on)
+{
+ struct adb_request req;
+
+ if (on) {
+ /* first call: get current backlight value */
+ if (backlight_level < 0) {
+ switch(pmu_kind) {
+ case PMU_68K_V1:
+ case PMU_68K_V2:
+ pmu_request(&req, NULL, 3, PMU_READ_NVRAM, 0x14, 0xe);
+ while (!req.complete)
+ pmu_poll();
+ printk(KERN_DEBUG "pmu: nvram returned bright: %d\n", (int)req.reply[1]);
+ backlight_level = req.reply[1];
+ break;
+ default:
+ backlight_enabled = 0;
+ return;
+ }
+ }
+ pmu_request(&req, NULL, 2, PMU_BACKLIGHT_BRIGHT,
+ LEVEL_TO_BRIGHT(backlight_level));
+ while (!req.complete)
+ pmu_poll();
+ }
+ pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
+ PMU_POW_BACKLIGHT | (on ? PMU_POW_ON : PMU_POW_OFF));
+ while (!req.complete)
+ pmu_poll();
+ backlight_enabled = on;
+}
+
+static void
+pmu_set_brightness(int level)
+{
+ int bright;
+
+ backlight_level = level;
+ bright = LEVEL_TO_BRIGHT(level);
+ if (!backlight_enabled)
+ return;
+ if (bright_req_1.complete)
+ pmu_request(&bright_req_1, NULL, 2, PMU_BACKLIGHT_BRIGHT,
+ bright);
+ if (bright_req_2.complete)
+ pmu_request(&bright_req_2, NULL, 2, PMU_POWER_CTRL,
+ PMU_POW_BACKLIGHT | (bright < 0x7f ? PMU_POW_ON : PMU_POW_OFF));
+}
+
+void
+pmu_enable_irled(int on)
+{
+ struct adb_request req;
+
+ pmu_request(&req, NULL, 2, PMU_POWER_CTRL, PMU_POW_IRLED |
+ (on ? PMU_POW_ON : PMU_POW_OFF));
+ while (!req.complete)
+ pmu_poll();
+}
+
+static void
+set_volume(int level)
+{
+}
+
+int
+pmu_present(void)
+{
+ return (pmu_kind != PMU_UNKNOWN);
+}
+
+#if 0 /* needs some work for 68K */
+
+/*
+ * This struct is used to store config register values for
+ * PCI devices which may get powered off when we sleep.
+ */
+static struct pci_save {
+ u16 command;
+ u16 cache_lat;
+ u16 intr;
+} *pbook_pci_saves;
+static int n_pbook_pci_saves;
+
+static inline void __openfirmware
+pbook_pci_save(void)
+{
+ int npci;
+ struct pci_dev *pd = NULL;
+ struct pci_save *ps;
+
+ npci = 0;
+ while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL)
+ ++npci;
+ n_pbook_pci_saves = npci;
+ if (npci == 0)
+ return;
+ ps = (struct pci_save *) kmalloc(npci * sizeof(*ps), GFP_KERNEL);
+ pbook_pci_saves = ps;
+ if (ps == NULL)
+ return;
+
+ pd = NULL;
+ while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) {
+ pci_read_config_word(pd, PCI_COMMAND, &ps->command);
+ pci_read_config_word(pd, PCI_CACHE_LINE_SIZE, &ps->cache_lat);
+ pci_read_config_word(pd, PCI_INTERRUPT_LINE, &ps->intr);
+ ++ps;
+ --npci;
+ }
+}
+
+static inline void __openfirmware
+pbook_pci_restore(void)
+{
+ u16 cmd;
+ struct pci_save *ps = pbook_pci_saves;
+ struct pci_dev *pd = NULL;
+ int j;
+
+ while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) {
+ if (ps->command == 0)
+ continue;
+ pci_read_config_word(pd, PCI_COMMAND, &cmd);
+ if ((ps->command & ~cmd) == 0)
+ continue;
+ switch (pd->hdr_type) {
+ case PCI_HEADER_TYPE_NORMAL:
+ for (j = 0; j < 6; ++j)
+ pci_write_config_dword(pd,
+ PCI_BASE_ADDRESS_0 + j*4,
+ pd->resource[j].start);
+ pci_write_config_dword(pd, PCI_ROM_ADDRESS,
+ pd->resource[PCI_ROM_RESOURCE].start);
+ pci_write_config_word(pd, PCI_CACHE_LINE_SIZE,
+ ps->cache_lat);
+ pci_write_config_word(pd, PCI_INTERRUPT_LINE,
+ ps->intr);
+ pci_write_config_word(pd, PCI_COMMAND, ps->command);
+ break;
+ /* other header types not restored at present */
+ }
+ }
+}
+
+/*
+ * Put the powerbook to sleep.
+ */
+#define IRQ_ENABLE ((unsigned int *)0xf3000024)
+#define MEM_CTRL ((unsigned int *)0xf8000070)
+
+int __openfirmware powerbook_sleep(void)
+{
+ int ret, i, x;
+ static int save_backlight;
+ static unsigned int save_irqen;
+ unsigned long msr;
+ unsigned int hid0;
+ unsigned long p, wait;
+ struct adb_request sleep_req;
+
+ /* Notify device drivers */
+ ret = notifier_call_chain(&sleep_notifier_list, PBOOK_SLEEP, NULL);
+ if (ret & NOTIFY_STOP_MASK)
+ return -EBUSY;
+
+ /* Sync the disks. */
+ /* XXX It would be nice to have some way to ensure that
+ * nobody is dirtying any new buffers while we wait. */
+ sys_sync();
+
+ /* Turn off the display backlight */
+ save_backlight = backlight_enabled;
+ if (save_backlight)
+ pmu_enable_backlight(0);
+
+ /* Give the disks a little time to actually finish writing */
+ for (wait = jiffies + (HZ/4); time_before(jiffies, wait); )
+ mb();
+
+ /* Disable all interrupts except pmu */
+ save_irqen = in_le32(IRQ_ENABLE);
+ for (i = 0; i < 32; ++i)
+ if (i != vias->intrs[0].line && (save_irqen & (1 << i)))
+ disable_irq(i);
+ asm volatile("mtdec %0" : : "r" (0x7fffffff));
+
+ /* Save the state of PCI config space for some slots */
+ pbook_pci_save();
+
+ /* Set the memory controller to keep the memory refreshed
+ while we're asleep */
+ for (i = 0x403f; i >= 0x4000; --i) {
+ out_be32(MEM_CTRL, i);
+ do {
+ x = (in_be32(MEM_CTRL) >> 16) & 0x3ff;
+ } while (x == 0);
+ if (x >= 0x100)
+ break;
+ }
+
+ /* Ask the PMU to put us to sleep */
+ pmu_request(&sleep_req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T');
+ while (!sleep_req.complete)
+ mb();
+ /* displacement-flush the L2 cache - necessary? */
+ for (p = KERNELBASE; p < KERNELBASE + 0x100000; p += 0x1000)
+ i = *(volatile int *)p;
+ asleep = 1;
+
+ /* Put the CPU into sleep mode */
+ asm volatile("mfspr %0,1008" : "=r" (hid0) :);
+ hid0 = (hid0 & ~(HID0_NAP | HID0_DOZE)) | HID0_SLEEP;
+ asm volatile("mtspr 1008,%0" : : "r" (hid0));
+ local_save_flags(msr);
+ msr |= MSR_POW | MSR_EE;
+ local_irq_restore(msr);
+ udelay(10);
+
+ /* OK, we're awake again, start restoring things */
+ out_be32(MEM_CTRL, 0x3f);
+ pbook_pci_restore();
+
+ /* wait for the PMU interrupt sequence to complete */
+ while (asleep)
+ mb();
+
+ /* reenable interrupts */
+ for (i = 0; i < 32; ++i)
+ if (i != vias->intrs[0].line && (save_irqen & (1 << i)))
+ enable_irq(i);
+
+ /* Notify drivers */
+ notifier_call_chain(&sleep_notifier_list, PBOOK_WAKE, NULL);
+
+ /* reenable ADB autopoll */
+ pmu_adb_autopoll(adb_dev_map);
+
+ /* Turn on the screen backlight, if it was on before */
+ if (save_backlight)
+ pmu_enable_backlight(1);
+
+ /* Wait for the hard disk to spin up */
+
+ return 0;
+}
+
+/*
+ * Support for /dev/pmu device
+ */
+static int __openfirmware pmu_open(struct inode *inode, struct file *file)
+{
+ return 0;
+}
+
+static ssize_t __openfirmware pmu_read(struct file *file, char *buf,
+ size_t count, loff_t *ppos)
+{
+ return 0;
+}
+
+static ssize_t __openfirmware pmu_write(struct file *file, const char *buf,
+ size_t count, loff_t *ppos)
+{
+ return 0;
+}
+
+/* Note: removed __openfirmware here since it causes link errors */
+static int /*__openfirmware*/ pmu_ioctl(struct inode * inode, struct file *filp,
+ u_int cmd, u_long arg)
+{
+ int error;
+ __u32 value;
+
+ switch (cmd) {
+ case PMU_IOC_SLEEP:
+ return -ENOSYS;
+ case PMU_IOC_GET_BACKLIGHT:
+ return put_user(backlight_level, (__u32 *)arg);
+ case PMU_IOC_SET_BACKLIGHT:
+ error = get_user(value, (__u32 *)arg);
+ if (!error)
+ pmu_set_brightness(value);
+ return error;
+ case PMU_IOC_GET_MODEL:
+ return put_user(pmu_kind, (__u32 *)arg);
+ }
+ return -EINVAL;
+}
+
+static struct file_operations pmu_device_fops = {
+ .read = pmu_read,
+ .write = pmu_write,
+ .ioctl = pmu_ioctl,
+ .open = pmu_open,
+};
+
+static struct miscdevice pmu_device = {
+ PMU_MINOR, "pmu", &pmu_device_fops
+};
+
+void pmu_device_init(void)
+{
+ if (!via)
+ return;
+ if (misc_register(&pmu_device) < 0)
+ printk(KERN_ERR "via-pmu68k: cannot register misc device.\n");
+}
+#endif /* CONFIG_PMAC_PBOOK */
+