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path: root/drivers/net/tokenring/skisa.c
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Diffstat (limited to 'drivers/net/tokenring/skisa.c')
-rw-r--r--drivers/net/tokenring/skisa.c442
1 files changed, 442 insertions, 0 deletions
diff --git a/drivers/net/tokenring/skisa.c b/drivers/net/tokenring/skisa.c
new file mode 100644
index 000000000000..3fab54a26466
--- /dev/null
+++ b/drivers/net/tokenring/skisa.c
@@ -0,0 +1,442 @@
+/*
+ * skisa.c: A network driver for SK-NET TMS380-based ISA token ring cards.
+ *
+ * Based on tmspci written 1999 by Adam Fritzler
+ *
+ * Written 2000 by Jochen Friedrich
+ * Dedicated to my girlfriend Steffi Bopp
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * This driver module supports the following cards:
+ * - SysKonnect TR4/16(+) ISA (SK-4190)
+ *
+ * Maintainer(s):
+ * AF Adam Fritzler mid@auk.cx
+ * JF Jochen Friedrich jochen@scram.de
+ *
+ * Modification History:
+ * 14-Jan-01 JF Created
+ * 28-Oct-02 JF Fixed probe of card for static compilation.
+ * Fixed module init to not make hotplug go wild.
+ * 09-Nov-02 JF Fixed early bail out on out of memory
+ * situations if multiple cards are found.
+ * Cleaned up some unnecessary console SPAM.
+ * 09-Dec-02 JF Fixed module reference counting.
+ * 02-Jan-03 JF Renamed to skisa.c
+ *
+ */
+static const char version[] = "skisa.c: v1.03 09/12/2002 by Jochen Friedrich\n";
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/trdevice.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/pci.h>
+#include <asm/dma.h>
+
+#include "tms380tr.h"
+
+#define SK_ISA_IO_EXTENT 32
+
+/* A zero-terminated list of I/O addresses to be probed. */
+static unsigned int portlist[] __initdata = {
+ 0x0A20, 0x1A20, 0x0B20, 0x1B20, 0x0980, 0x1980, 0x0900, 0x1900,// SK
+ 0
+};
+
+/* A zero-terminated list of IRQs to be probed.
+ * Used again after initial probe for sktr_chipset_init, called from sktr_open.
+ */
+static const unsigned short irqlist[] = {
+ 3, 5, 9, 10, 11, 12, 15,
+ 0
+};
+
+/* A zero-terminated list of DMAs to be probed. */
+static int dmalist[] __initdata = {
+ 5, 6, 7,
+ 0
+};
+
+static char isa_cardname[] = "SK NET TR 4/16 ISA\0";
+
+struct net_device *sk_isa_probe(int unit);
+static int sk_isa_open(struct net_device *dev);
+static void sk_isa_read_eeprom(struct net_device *dev);
+static unsigned short sk_isa_setnselout_pins(struct net_device *dev);
+
+static unsigned short sk_isa_sifreadb(struct net_device *dev, unsigned short reg)
+{
+ return inb(dev->base_addr + reg);
+}
+
+static unsigned short sk_isa_sifreadw(struct net_device *dev, unsigned short reg)
+{
+ return inw(dev->base_addr + reg);
+}
+
+static void sk_isa_sifwriteb(struct net_device *dev, unsigned short val, unsigned short reg)
+{
+ outb(val, dev->base_addr + reg);
+}
+
+static void sk_isa_sifwritew(struct net_device *dev, unsigned short val, unsigned short reg)
+{
+ outw(val, dev->base_addr + reg);
+}
+
+
+static int __init sk_isa_probe1(struct net_device *dev, int ioaddr)
+{
+ unsigned char old, chk1, chk2;
+
+ if (!request_region(ioaddr, SK_ISA_IO_EXTENT, isa_cardname))
+ return -ENODEV;
+
+ old = inb(ioaddr + SIFADR); /* Get the old SIFADR value */
+
+ chk1 = 0; /* Begin with check value 0 */
+ do {
+ /* Write new SIFADR value */
+ outb(chk1, ioaddr + SIFADR);
+
+ /* Read, invert and write */
+ chk2 = inb(ioaddr + SIFADD);
+ chk2 ^= 0x0FE;
+ outb(chk2, ioaddr + SIFADR);
+
+ /* Read, invert and compare */
+ chk2 = inb(ioaddr + SIFADD);
+ chk2 ^= 0x0FE;
+
+ if(chk1 != chk2) {
+ release_region(ioaddr, SK_ISA_IO_EXTENT);
+ return -ENODEV;
+ }
+
+ chk1 -= 2;
+ } while(chk1 != 0); /* Repeat 128 times (all byte values) */
+
+ /* Restore the SIFADR value */
+ outb(old, ioaddr + SIFADR);
+
+ dev->base_addr = ioaddr;
+ return 0;
+}
+
+static int __init setup_card(struct net_device *dev)
+{
+ struct net_local *tp;
+ static int versionprinted;
+ const unsigned *port;
+ int j, err = 0;
+
+ if (!dev)
+ return -ENOMEM;
+
+ SET_MODULE_OWNER(dev);
+ if (dev->base_addr) /* probe specific location */
+ err = sk_isa_probe1(dev, dev->base_addr);
+ else {
+ for (port = portlist; *port; port++) {
+ err = sk_isa_probe1(dev, *port);
+ if (!err)
+ break;
+ }
+ }
+ if (err)
+ goto out4;
+
+ /* At this point we have found a valid card. */
+
+ if (versionprinted++ == 0)
+ printk(KERN_DEBUG "%s", version);
+
+ err = -EIO;
+ if (tmsdev_init(dev, ISA_MAX_ADDRESS, NULL))
+ goto out4;
+
+ dev->base_addr &= ~3;
+
+ sk_isa_read_eeprom(dev);
+
+ printk(KERN_DEBUG "%s: Ring Station Address: ", dev->name);
+ printk("%2.2x", dev->dev_addr[0]);
+ for (j = 1; j < 6; j++)
+ printk(":%2.2x", dev->dev_addr[j]);
+ printk("\n");
+
+ tp = netdev_priv(dev);
+ tp->setnselout = sk_isa_setnselout_pins;
+
+ tp->sifreadb = sk_isa_sifreadb;
+ tp->sifreadw = sk_isa_sifreadw;
+ tp->sifwriteb = sk_isa_sifwriteb;
+ tp->sifwritew = sk_isa_sifwritew;
+
+ memcpy(tp->ProductID, isa_cardname, PROD_ID_SIZE + 1);
+
+ tp->tmspriv = NULL;
+
+ dev->open = sk_isa_open;
+ dev->stop = tms380tr_close;
+
+ if (dev->irq == 0)
+ {
+ for(j = 0; irqlist[j] != 0; j++)
+ {
+ dev->irq = irqlist[j];
+ if (!request_irq(dev->irq, tms380tr_interrupt, 0,
+ isa_cardname, dev))
+ break;
+ }
+
+ if(irqlist[j] == 0)
+ {
+ printk(KERN_INFO "%s: AutoSelect no IRQ available\n", dev->name);
+ goto out3;
+ }
+ }
+ else
+ {
+ for(j = 0; irqlist[j] != 0; j++)
+ if (irqlist[j] == dev->irq)
+ break;
+ if (irqlist[j] == 0)
+ {
+ printk(KERN_INFO "%s: Illegal IRQ %d specified\n",
+ dev->name, dev->irq);
+ goto out3;
+ }
+ if (request_irq(dev->irq, tms380tr_interrupt, 0,
+ isa_cardname, dev))
+ {
+ printk(KERN_INFO "%s: Selected IRQ %d not available\n",
+ dev->name, dev->irq);
+ goto out3;
+ }
+ }
+
+ if (dev->dma == 0)
+ {
+ for(j = 0; dmalist[j] != 0; j++)
+ {
+ dev->dma = dmalist[j];
+ if (!request_dma(dev->dma, isa_cardname))
+ break;
+ }
+
+ if(dmalist[j] == 0)
+ {
+ printk(KERN_INFO "%s: AutoSelect no DMA available\n", dev->name);
+ goto out2;
+ }
+ }
+ else
+ {
+ for(j = 0; dmalist[j] != 0; j++)
+ if (dmalist[j] == dev->dma)
+ break;
+ if (dmalist[j] == 0)
+ {
+ printk(KERN_INFO "%s: Illegal DMA %d specified\n",
+ dev->name, dev->dma);
+ goto out2;
+ }
+ if (request_dma(dev->dma, isa_cardname))
+ {
+ printk(KERN_INFO "%s: Selected DMA %d not available\n",
+ dev->name, dev->dma);
+ goto out2;
+ }
+ }
+
+ printk(KERN_DEBUG "%s: IO: %#4lx IRQ: %d DMA: %d\n",
+ dev->name, dev->base_addr, dev->irq, dev->dma);
+
+ err = register_netdev(dev);
+ if (err)
+ goto out;
+
+ return 0;
+out:
+ free_dma(dev->dma);
+out2:
+ free_irq(dev->irq, dev);
+out3:
+ tmsdev_term(dev);
+out4:
+ release_region(dev->base_addr, SK_ISA_IO_EXTENT);
+ return err;
+}
+
+struct net_device * __init sk_isa_probe(int unit)
+{
+ struct net_device *dev = alloc_trdev(sizeof(struct net_local));
+ int err = 0;
+
+ if (!dev)
+ return ERR_PTR(-ENOMEM);
+
+ if (unit >= 0) {
+ sprintf(dev->name, "tr%d", unit);
+ netdev_boot_setup_check(dev);
+ }
+
+ err = setup_card(dev);
+ if (err)
+ goto out;
+
+ return dev;
+out:
+ free_netdev(dev);
+ return ERR_PTR(err);
+}
+
+/*
+ * Reads MAC address from adapter RAM, which should've read it from
+ * the onboard ROM.
+ *
+ * Calling this on a board that does not support it can be a very
+ * dangerous thing. The Madge board, for instance, will lock your
+ * machine hard when this is called. Luckily, its supported in a
+ * separate driver. --ASF
+ */
+static void sk_isa_read_eeprom(struct net_device *dev)
+{
+ int i;
+
+ /* Address: 0000:0000 */
+ sk_isa_sifwritew(dev, 0, SIFADX);
+ sk_isa_sifwritew(dev, 0, SIFADR);
+
+ /* Read six byte MAC address data */
+ dev->addr_len = 6;
+ for(i = 0; i < 6; i++)
+ dev->dev_addr[i] = sk_isa_sifreadw(dev, SIFINC) >> 8;
+}
+
+unsigned short sk_isa_setnselout_pins(struct net_device *dev)
+{
+ return 0;
+}
+
+static int sk_isa_open(struct net_device *dev)
+{
+ struct net_local *tp = netdev_priv(dev);
+ unsigned short val = 0;
+ unsigned short oldval;
+ int i;
+
+ val = 0;
+ for(i = 0; irqlist[i] != 0; i++)
+ {
+ if(irqlist[i] == dev->irq)
+ break;
+ }
+
+ val |= CYCLE_TIME << 2;
+ val |= i << 4;
+ i = dev->dma - 5;
+ val |= i;
+ if(tp->DataRate == SPEED_4)
+ val |= LINE_SPEED_BIT;
+ else
+ val &= ~LINE_SPEED_BIT;
+ oldval = sk_isa_sifreadb(dev, POSREG);
+ /* Leave cycle bits alone */
+ oldval |= 0xf3;
+ val &= oldval;
+ sk_isa_sifwriteb(dev, val, POSREG);
+
+ return tms380tr_open(dev);
+}
+
+#ifdef MODULE
+
+#define ISATR_MAX_ADAPTERS 3
+
+static int io[ISATR_MAX_ADAPTERS];
+static int irq[ISATR_MAX_ADAPTERS];
+static int dma[ISATR_MAX_ADAPTERS];
+
+MODULE_LICENSE("GPL");
+
+module_param_array(io, int, NULL, 0);
+module_param_array(irq, int, NULL, 0);
+module_param_array(dma, int, NULL, 0);
+
+static struct net_device *sk_isa_dev[ISATR_MAX_ADAPTERS];
+
+int init_module(void)
+{
+ struct net_device *dev;
+ int i, num = 0, err = 0;
+
+ for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) {
+ dev = alloc_trdev(sizeof(struct net_local));
+ if (!dev)
+ continue;
+
+ dev->base_addr = io[i];
+ dev->irq = irq[i];
+ dev->dma = dma[i];
+ err = setup_card(dev);
+
+ if (!err) {
+ sk_isa_dev[i] = dev;
+ ++num;
+ } else {
+ free_netdev(dev);
+ }
+ }
+
+ printk(KERN_NOTICE "skisa.c: %d cards found.\n", num);
+ /* Probe for cards. */
+ if (num == 0) {
+ printk(KERN_NOTICE "skisa.c: No cards found.\n");
+ return (-ENODEV);
+ }
+ return (0);
+}
+
+void cleanup_module(void)
+{
+ int i;
+
+ for (i = 0; i < ISATR_MAX_ADAPTERS ; i++) {
+ struct net_device *dev = sk_isa_dev[i];
+
+ if (!dev)
+ continue;
+
+ unregister_netdev(dev);
+ release_region(dev->base_addr, SK_ISA_IO_EXTENT);
+ free_irq(dev->irq, dev);
+ free_dma(dev->dma);
+ tmsdev_term(dev);
+ free_netdev(dev);
+ }
+}
+#endif /* MODULE */
+
+
+/*
+ * Local variables:
+ * compile-command: "gcc -DMODVERSIONS -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer -I/usr/src/linux/drivers/net/tokenring/ -c skisa.c"
+ * alt-compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer -I/usr/src/linux/drivers/net/tokenring/ -c skisa.c"
+ * c-set-style "K&R"
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * tab-width: 8
+ * End:
+ */
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