diff options
Diffstat (limited to 'arch/arm/mach-footbridge')
23 files changed, 2666 insertions, 0 deletions
diff --git a/arch/arm/mach-footbridge/Kconfig b/arch/arm/mach-footbridge/Kconfig new file mode 100644 index 000000000000..1090c680b6dd --- /dev/null +++ b/arch/arm/mach-footbridge/Kconfig @@ -0,0 +1,80 @@ +if ARCH_FOOTBRIDGE + +menu "Footbridge Implementations" + +config ARCH_CATS + bool "CATS" + select FOOTBRIDGE_HOST + help + Say Y here if you intend to run this kernel on the CATS. + + Saying N will reduce the size of the Footbridge kernel. + +config ARCH_PERSONAL_SERVER + bool "Compaq Personal Server" + select FOOTBRIDGE_HOST + ---help--- + Say Y here if you intend to run this kernel on the Compaq + Personal Server. + + Saying N will reduce the size of the Footbridge kernel. + + The Compaq Personal Server is not available for purchase. + There are no product plans beyond the current research + prototypes at this time. Information is available at: + + <http://www.crl.hpl.hp.com/projects/personalserver/> + + If you have any questions or comments about the Compaq Personal + Server, send e-mail to <skiff@crl.dec.com>. + +config ARCH_EBSA285_ADDIN + bool "EBSA285 (addin mode)" + select ARCH_EBSA285 + select FOOTBRIDGE_ADDIN + help + Say Y here if you intend to run this kernel on the EBSA285 card + in addin mode. + + Saying N will reduce the size of the Footbridge kernel. + +config ARCH_EBSA285_HOST + bool "EBSA285 (host mode)" + select ARCH_EBSA285 + select FOOTBRIDGE_HOST + help + Say Y here if you intend to run this kernel on the EBSA285 card + in host ("central function") mode. + + Saying N will reduce the size of the Footbridge kernel. + +config ARCH_NETWINDER + bool "NetWinder" + select FOOTBRIDGE_HOST + help + Say Y here if you intend to run this kernel on the Rebel.COM + NetWinder. Information about this machine can be found at: + + <http://www.netwinder.org/> + + Saying N will reduce the size of the Footbridge kernel. + +endmenu + +# Footbridge support +config FOOTBRIDGE + bool + +# Footbridge in host mode +config FOOTBRIDGE_HOST + bool + +# Footbridge in addin mode +config FOOTBRIDGE_ADDIN + bool + +# EBSA285 board in either host or addin mode +config ARCH_EBSA285 + bool + +endif diff --git a/arch/arm/mach-footbridge/Makefile b/arch/arm/mach-footbridge/Makefile new file mode 100644 index 000000000000..0694ad6b6476 --- /dev/null +++ b/arch/arm/mach-footbridge/Makefile @@ -0,0 +1,30 @@ +# +# Makefile for the linux kernel. +# + +# Object file lists. + +obj-y := common.o dc21285.o dma.o isa-irq.o time.o +obj-m := +obj-n := +obj- := + +pci-$(CONFIG_ARCH_CATS) += cats-pci.o +pci-$(CONFIG_ARCH_EBSA285_HOST) += ebsa285-pci.o +pci-$(CONFIG_ARCH_NETWINDER) += netwinder-pci.o +pci-$(CONFIG_ARCH_PERSONAL_SERVER) += personal-pci.o + +leds-$(CONFIG_ARCH_CO285) += ebsa285-leds.o +leds-$(CONFIG_ARCH_EBSA285) += ebsa285-leds.o +leds-$(CONFIG_ARCH_NETWINDER) += netwinder-leds.o + +obj-$(CONFIG_ARCH_CATS) += cats-hw.o isa-timer.o +obj-$(CONFIG_ARCH_CO285) += co285.o dc21285-timer.o +obj-$(CONFIG_ARCH_EBSA285) += ebsa285.o dc21285-timer.o +obj-$(CONFIG_ARCH_NETWINDER) += netwinder-hw.o isa-timer.o +obj-$(CONFIG_ARCH_PERSONAL_SERVER) += personal.o dc21285-timer.o + +obj-$(CONFIG_PCI) +=$(pci-y) +obj-$(CONFIG_LEDS) +=$(leds-y) + +obj-$(CONFIG_ISA) += isa.o diff --git a/arch/arm/mach-footbridge/Makefile.boot b/arch/arm/mach-footbridge/Makefile.boot new file mode 100644 index 000000000000..c7e75acfe6c9 --- /dev/null +++ b/arch/arm/mach-footbridge/Makefile.boot @@ -0,0 +1,4 @@ + zreladdr-y := 0x00008000 +params_phys-y := 0x00000100 +initrd_phys-y := 0x00800000 + diff --git a/arch/arm/mach-footbridge/cats-hw.c b/arch/arm/mach-footbridge/cats-hw.c new file mode 100644 index 000000000000..d1ced86c379c --- /dev/null +++ b/arch/arm/mach-footbridge/cats-hw.c @@ -0,0 +1,95 @@ +/* + * linux/arch/arm/mach-footbridge/cats-hw.c + * + * CATS machine fixup + * + * Copyright (C) 1998, 1999 Russell King, Phil Blundell + */ +#include <linux/ioport.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/tty.h> + +#include <asm/hardware/dec21285.h> +#include <asm/io.h> +#include <asm/mach-types.h> +#include <asm/setup.h> + +#include <asm/mach/arch.h> + +#include "common.h" + +#define CFG_PORT 0x370 +#define INDEX_PORT (CFG_PORT) +#define DATA_PORT (CFG_PORT + 1) + +static int __init cats_hw_init(void) +{ + if (machine_is_cats()) { + /* Set Aladdin to CONFIGURE mode */ + outb(0x51, CFG_PORT); + outb(0x23, CFG_PORT); + + /* Select logical device 3 */ + outb(0x07, INDEX_PORT); + outb(0x03, DATA_PORT); + + /* Set parallel port to DMA channel 3, ECP+EPP1.9, + enable EPP timeout */ + outb(0x74, INDEX_PORT); + outb(0x03, DATA_PORT); + + outb(0xf0, INDEX_PORT); + outb(0x0f, DATA_PORT); + + outb(0xf1, INDEX_PORT); + outb(0x07, DATA_PORT); + + /* Select logical device 4 */ + outb(0x07, INDEX_PORT); + outb(0x04, DATA_PORT); + + /* UART1 high speed mode */ + outb(0xf0, INDEX_PORT); + outb(0x02, DATA_PORT); + + /* Select logical device 5 */ + outb(0x07, INDEX_PORT); + outb(0x05, DATA_PORT); + + /* UART2 high speed mode */ + outb(0xf0, INDEX_PORT); + outb(0x02, DATA_PORT); + + /* Set Aladdin to RUN mode */ + outb(0xbb, CFG_PORT); + } + + return 0; +} + +__initcall(cats_hw_init); + +/* + * CATS uses soft-reboot by default, since + * hard reboots fail on early boards. + */ +static void __init +fixup_cats(struct machine_desc *desc, struct tag *tags, + char **cmdline, struct meminfo *mi) +{ + ORIG_VIDEO_LINES = 25; + ORIG_VIDEO_POINTS = 16; + ORIG_Y = 24; +} + +MACHINE_START(CATS, "Chalice-CATS") + MAINTAINER("Philip Blundell") + BOOT_MEM(0x00000000, DC21285_ARMCSR_BASE, 0xfe000000) + BOOT_PARAMS(0x00000100) + SOFT_REBOOT + FIXUP(fixup_cats) + MAPIO(footbridge_map_io) + INITIRQ(footbridge_init_irq) + .timer = &isa_timer, +MACHINE_END diff --git a/arch/arm/mach-footbridge/cats-pci.c b/arch/arm/mach-footbridge/cats-pci.c new file mode 100644 index 000000000000..4f984fde7375 --- /dev/null +++ b/arch/arm/mach-footbridge/cats-pci.c @@ -0,0 +1,55 @@ +/* + * linux/arch/arm/mach-footbridge/cats-pci.c + * + * PCI bios-type initialisation for PCI machines + * + * Bits taken from various places. + */ +#include <linux/kernel.h> +#include <linux/pci.h> +#include <linux/init.h> + +#include <asm/irq.h> +#include <asm/mach/pci.h> +#include <asm/mach-types.h> + +/* cats host-specific stuff */ +static int irqmap_cats[] __initdata = { IRQ_PCI, IRQ_IN0, IRQ_IN1, IRQ_IN3 }; + +static int __init cats_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +{ + if (dev->irq >= 128) + return dev->irq & 0x1f; + + if (dev->irq >= 1 && dev->irq <= 4) + return irqmap_cats[dev->irq - 1]; + + if (dev->irq != 0) + printk("PCI: device %02x:%02x has unknown irq line %x\n", + dev->bus->number, dev->devfn, dev->irq); + + return -1; +} + +/* + * why not the standard PCI swizzle? does this prevent 4-port tulip + * cards being used (ie, pci-pci bridge based cards)? + */ +static struct hw_pci cats_pci __initdata = { + .swizzle = NULL, + .map_irq = cats_map_irq, + .nr_controllers = 1, + .setup = dc21285_setup, + .scan = dc21285_scan_bus, + .preinit = dc21285_preinit, + .postinit = dc21285_postinit, +}; + +static int cats_pci_init(void) +{ + if (machine_is_cats()) + pci_common_init(&cats_pci); + return 0; +} + +subsys_initcall(cats_pci_init); diff --git a/arch/arm/mach-footbridge/co285.c b/arch/arm/mach-footbridge/co285.c new file mode 100644 index 000000000000..e1541914fdcd --- /dev/null +++ b/arch/arm/mach-footbridge/co285.c @@ -0,0 +1,38 @@ +/* + * linux/arch/arm/mach-footbridge/co285.c + * + * CO285 machine fixup + */ +#include <linux/init.h> + +#include <asm/hardware/dec21285.h> +#include <asm/mach-types.h> + +#include <asm/mach/arch.h> + +#include "common.h" + +static void __init +fixup_coebsa285(struct machine_desc *desc, struct tag *tags, + char **cmdline, struct meminfo *mi) +{ + extern unsigned long boot_memory_end; + extern char boot_command_line[]; + + mi->nr_banks = 1; + mi->bank[0].start = PHYS_OFFSET; + mi->bank[0].size = boot_memory_end; + mi->bank[0].node = 0; + + *cmdline = boot_command_line; +} + +MACHINE_START(CO285, "co-EBSA285") + MAINTAINER("Mark van Doesburg") + BOOT_MEM(0x00000000, DC21285_ARMCSR_BASE, 0x7cf00000) + FIXUP(fixup_coebsa285) + MAPIO(footbridge_map_io) + INITIRQ(footbridge_init_irq) + .timer = &footbridge_timer, +MACHINE_END + diff --git a/arch/arm/mach-footbridge/common.c b/arch/arm/mach-footbridge/common.c new file mode 100644 index 000000000000..eb8238c1ef06 --- /dev/null +++ b/arch/arm/mach-footbridge/common.c @@ -0,0 +1,205 @@ +/* + * linux/arch/arm/mach-footbridge/common.c + * + * Copyright (C) 1998-2000 Russell King, Dave Gilbert. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/config.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/mm.h> +#include <linux/ioport.h> +#include <linux/list.h> +#include <linux/init.h> + +#include <asm/pgtable.h> +#include <asm/page.h> +#include <asm/irq.h> +#include <asm/io.h> +#include <asm/mach-types.h> +#include <asm/setup.h> +#include <asm/hardware/dec21285.h> + +#include <asm/mach/irq.h> +#include <asm/mach/map.h> + +#include "common.h" + +extern void __init isa_init_irq(unsigned int irq); + +unsigned int mem_fclk_21285 = 50000000; + +EXPORT_SYMBOL(mem_fclk_21285); + +static int __init parse_tag_memclk(const struct tag *tag) +{ + mem_fclk_21285 = tag->u.memclk.fmemclk; + return 0; +} + +__tagtable(ATAG_MEMCLK, parse_tag_memclk); + +/* + * Footbridge IRQ translation table + * Converts from our IRQ numbers into FootBridge masks + */ +static const int fb_irq_mask[] = { + IRQ_MASK_UART_RX, /* 0 */ + IRQ_MASK_UART_TX, /* 1 */ + IRQ_MASK_TIMER1, /* 2 */ + IRQ_MASK_TIMER2, /* 3 */ + IRQ_MASK_TIMER3, /* 4 */ + IRQ_MASK_IN0, /* 5 */ + IRQ_MASK_IN1, /* 6 */ + IRQ_MASK_IN2, /* 7 */ + IRQ_MASK_IN3, /* 8 */ + IRQ_MASK_DOORBELLHOST, /* 9 */ + IRQ_MASK_DMA1, /* 10 */ + IRQ_MASK_DMA2, /* 11 */ + IRQ_MASK_PCI, /* 12 */ + IRQ_MASK_SDRAMPARITY, /* 13 */ + IRQ_MASK_I2OINPOST, /* 14 */ + IRQ_MASK_PCI_ABORT, /* 15 */ + IRQ_MASK_PCI_SERR, /* 16 */ + IRQ_MASK_DISCARD_TIMER, /* 17 */ + IRQ_MASK_PCI_DPERR, /* 18 */ + IRQ_MASK_PCI_PERR, /* 19 */ +}; + +static void fb_mask_irq(unsigned int irq) +{ + *CSR_IRQ_DISABLE = fb_irq_mask[_DC21285_INR(irq)]; +} + +static void fb_unmask_irq(unsigned int irq) +{ + *CSR_IRQ_ENABLE = fb_irq_mask[_DC21285_INR(irq)]; +} + +static struct irqchip fb_chip = { + .ack = fb_mask_irq, + .mask = fb_mask_irq, + .unmask = fb_unmask_irq, +}; + +static void __init __fb_init_irq(void) +{ + unsigned int irq; + + /* + * setup DC21285 IRQs + */ + *CSR_IRQ_DISABLE = -1; + *CSR_FIQ_DISABLE = -1; + + for (irq = _DC21285_IRQ(0); irq < _DC21285_IRQ(20); irq++) { + set_irq_chip(irq, &fb_chip); + set_irq_handler(irq, do_level_IRQ); + set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); + } +} + +void __init footbridge_init_irq(void) +{ + __fb_init_irq(); + + if (!footbridge_cfn_mode()) + return; + + if (machine_is_ebsa285()) + /* The following is dependent on which slot + * you plug the Southbridge card into. We + * currently assume that you plug it into + * the right-hand most slot. + */ + isa_init_irq(IRQ_PCI); + + if (machine_is_cats()) + isa_init_irq(IRQ_IN2); + + if (machine_is_netwinder()) + isa_init_irq(IRQ_IN3); +} + +/* + * Common mapping for all systems. Note that the outbound write flush is + * commented out since there is a "No Fix" problem with it. Not mapping + * it means that we have extra bullet protection on our feet. + */ +static struct map_desc fb_common_io_desc[] __initdata = { + { ARMCSR_BASE, DC21285_ARMCSR_BASE, ARMCSR_SIZE, MT_DEVICE }, + { XBUS_BASE, 0x40000000, XBUS_SIZE, MT_DEVICE } +}; + +/* + * The mapping when the footbridge is in host mode. We don't map any of + * this when we are in add-in mode. + */ +static struct map_desc ebsa285_host_io_desc[] __initdata = { +#if defined(CONFIG_ARCH_FOOTBRIDGE) && defined(CONFIG_FOOTBRIDGE_HOST) + { PCIMEM_BASE, DC21285_PCI_MEM, PCIMEM_SIZE, MT_DEVICE }, + { PCICFG0_BASE, DC21285_PCI_TYPE_0_CONFIG, PCICFG0_SIZE, MT_DEVICE }, + { PCICFG1_BASE, DC21285_PCI_TYPE_1_CONFIG, PCICFG1_SIZE, MT_DEVICE }, + { PCIIACK_BASE, DC21285_PCI_IACK, PCIIACK_SIZE, MT_DEVICE }, + { PCIO_BASE, DC21285_PCI_IO, PCIO_SIZE, MT_DEVICE } +#endif +}; + +/* + * The CO-ebsa285 mapping. + */ +static struct map_desc co285_io_desc[] __initdata = { +#ifdef CONFIG_ARCH_CO285 + { PCIO_BASE, DC21285_PCI_IO, PCIO_SIZE, MT_DEVICE }, + { PCIMEM_BASE, DC21285_PCI_MEM, PCIMEM_SIZE, MT_DEVICE } +#endif +}; + +void __init footbridge_map_io(void) +{ + /* + * Set up the common mapping first; we need this to + * determine whether we're in host mode or not. + */ + iotable_init(fb_common_io_desc, ARRAY_SIZE(fb_common_io_desc)); + + /* + * Now, work out what we've got to map in addition on this + * platform. + */ + if (machine_is_co285()) + iotable_init(co285_io_desc, ARRAY_SIZE(co285_io_desc)); + if (footbridge_cfn_mode()) + iotable_init(ebsa285_host_io_desc, ARRAY_SIZE(ebsa285_host_io_desc)); +} + +#ifdef CONFIG_FOOTBRIDGE_ADDIN + +/* + * These two functions convert virtual addresses to PCI addresses and PCI + * addresses to virtual addresses. Note that it is only legal to use these + * on memory obtained via get_zeroed_page or kmalloc. + */ +unsigned long __virt_to_bus(unsigned long res) +{ + WARN_ON(res < PAGE_OFFSET || res >= (unsigned long)high_memory); + + return (res - PAGE_OFFSET) + (*CSR_PCISDRAMBASE & 0xfffffff0); +} +EXPORT_SYMBOL(__virt_to_bus); + +unsigned long __bus_to_virt(unsigned long res) +{ + res -= (*CSR_PCISDRAMBASE & 0xfffffff0); + res += PAGE_OFFSET; + + WARN_ON(res < PAGE_OFFSET || res >= (unsigned long)high_memory); + + return res; +} +EXPORT_SYMBOL(__bus_to_virt); + +#endif diff --git a/arch/arm/mach-footbridge/common.h b/arch/arm/mach-footbridge/common.h new file mode 100644 index 000000000000..580e31bbc711 --- /dev/null +++ b/arch/arm/mach-footbridge/common.h @@ -0,0 +1,9 @@ + +extern struct sys_timer footbridge_timer; +extern struct sys_timer isa_timer; + +extern void isa_rtc_init(void); + +extern void footbridge_map_io(void); +extern void footbridge_init_irq(void); + diff --git a/arch/arm/mach-footbridge/dc21285-timer.c b/arch/arm/mach-footbridge/dc21285-timer.c new file mode 100644 index 000000000000..580e1d4bce08 --- /dev/null +++ b/arch/arm/mach-footbridge/dc21285-timer.c @@ -0,0 +1,68 @@ +/* + * linux/arch/arm/mach-footbridge/dc21285-timer.c + * + * Copyright (C) 1998 Russell King. + * Copyright (C) 1998 Phil Blundell + */ +#include <linux/init.h> +#include <linux/interrupt.h> + +#include <asm/irq.h> + +#include <asm/hardware/dec21285.h> +#include <asm/mach/time.h> + +#include "common.h" + +/* + * Footbridge timer 1 support. + */ +static unsigned long timer1_latch; + +static unsigned long timer1_gettimeoffset (void) +{ + unsigned long value = timer1_latch - *CSR_TIMER1_VALUE; + + return ((tick_nsec / 1000) * value) / timer1_latch; +} + +static irqreturn_t +timer1_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + write_seqlock(&xtime_lock); + + *CSR_TIMER1_CLR = 0; + + timer_tick(regs); + + write_sequnlock(&xtime_lock); + + return IRQ_HANDLED; +} + +static struct irqaction footbridge_timer_irq = { + .name = "Timer1 timer tick", + .handler = timer1_interrupt, + .flags = SA_INTERRUPT, +}; + +/* + * Set up timer interrupt. + */ +static void __init footbridge_timer_init(void) +{ + isa_rtc_init(); + + timer1_latch = (mem_fclk_21285 + 8 * HZ) / (16 * HZ); + + *CSR_TIMER1_CLR = 0; + *CSR_TIMER1_LOAD = timer1_latch; + *CSR_TIMER1_CNTL = TIMER_CNTL_ENABLE | TIMER_CNTL_AUTORELOAD | TIMER_CNTL_DIV16; + + setup_irq(IRQ_TIMER1, &footbridge_timer_irq); +} + +struct sys_timer footbridge_timer = { + .init = footbridge_timer_init, + .offset = timer1_gettimeoffset, +}; diff --git a/arch/arm/mach-footbridge/dc21285.c b/arch/arm/mach-footbridge/dc21285.c new file mode 100644 index 000000000000..e79884eea1f7 --- /dev/null +++ b/arch/arm/mach-footbridge/dc21285.c @@ -0,0 +1,384 @@ +/* + * linux/arch/arm/kernel/dec21285.c: PCI functions for DC21285 + * + * Copyright (C) 1998-2001 Russell King + * Copyright (C) 1998-2000 Phil Blundell + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/kernel.h> +#include <linux/pci.h> +#include <linux/ptrace.h> +#include <linux/interrupt.h> +#include <linux/mm.h> +#include <linux/slab.h> +#include <linux/init.h> +#include <linux/ioport.h> + +#include <asm/io.h> +#include <asm/irq.h> +#include <asm/system.h> +#include <asm/mach/pci.h> +#include <asm/hardware/dec21285.h> + +#define MAX_SLOTS 21 + +#define PCICMD_ABORT ((PCI_STATUS_REC_MASTER_ABORT| \ + PCI_STATUS_REC_TARGET_ABORT)<<16) + +#define PCICMD_ERROR_BITS ((PCI_STATUS_DETECTED_PARITY | \ + PCI_STATUS_REC_MASTER_ABORT | \ + PCI_STATUS_REC_TARGET_ABORT | \ + PCI_STATUS_PARITY) << 16) + +extern int setup_arm_irq(int, struct irqaction *); +extern void pcibios_report_status(u_int status_mask, int warn); +extern void register_isa_ports(unsigned int, unsigned int, unsigned int); + +static unsigned long +dc21285_base_address(struct pci_bus *bus, unsigned int devfn) +{ + unsigned long addr = 0; + + if (bus->number == 0) { + if (PCI_SLOT(devfn) == 0) + /* + * For devfn 0, point at the 21285 + */ + addr = ARMCSR_BASE; + else { + devfn -= 1 << 3; + + if (devfn < PCI_DEVFN(MAX_SLOTS, 0)) + addr = PCICFG0_BASE | 0xc00000 | (devfn << 8); + } + } else + addr = PCICFG1_BASE | (bus->number << 16) | (devfn << 8); + + return addr; +} + +static int +dc21285_read_config(struct pci_bus *bus, unsigned int devfn, int where, + int size, u32 *value) +{ + unsigned long addr = dc21285_base_address(bus, devfn); + u32 v = 0xffffffff; + + if (addr) + switch (size) { + case 1: + asm("ldr%?b %0, [%1, %2]" + : "=r" (v) : "r" (addr), "r" (where)); + break; + case 2: + asm("ldr%?h %0, [%1, %2]" + : "=r" (v) : "r" (addr), "r" (where)); + break; + case 4: + asm("ldr%? %0, [%1, %2]" + : "=r" (v) : "r" (addr), "r" (where)); + break; + } + + *value = v; + + v = *CSR_PCICMD; + if (v & PCICMD_ABORT) { + *CSR_PCICMD = v & (0xffff|PCICMD_ABORT); + return -1; + } + + return PCIBIOS_SUCCESSFUL; +} + +static int +dc21285_write_config(struct pci_bus *bus, unsigned int devfn, int where, + int size, u32 value) +{ + unsigned long addr = dc21285_base_address(bus, devfn); + u32 v; + + if (addr) + switch (size) { + case 1: + asm("str%?b %0, [%1, %2]" + : : "r" (value), "r" (addr), "r" (where)); + break; + case 2: + asm("str%?h %0, [%1, %2]" + : : "r" (value), "r" (addr), "r" (where)); + break; + case 4: + asm("str%? %0, [%1, %2]" + : : "r" (value), "r" (addr), "r" (where)); + break; + } + + v = *CSR_PCICMD; + if (v & PCICMD_ABORT) { + *CSR_PCICMD = v & (0xffff|PCICMD_ABORT); + return -1; + } + + return PCIBIOS_SUCCESSFUL; +} + +static struct pci_ops dc21285_ops = { + .read = dc21285_read_config, + .write = dc21285_write_config, +}; + +static struct timer_list serr_timer; +static struct timer_list perr_timer; + +static void dc21285_enable_error(unsigned long __data) +{ + switch (__data) { + case IRQ_PCI_SERR: + del_timer(&serr_timer); + break; + + case IRQ_PCI_PERR: + del_timer(&perr_timer); + break; + } + + enable_irq(__data); +} + +/* + * Warn on PCI errors. + */ +static irqreturn_t dc21285_abort_irq(int irq, void *dev_id, struct pt_regs *regs) +{ + unsigned int cmd; + unsigned int status; + + cmd = *CSR_PCICMD; + status = cmd >> 16; + cmd = cmd & 0xffff; + + if (status & PCI_STATUS_REC_MASTER_ABORT) { + printk(KERN_DEBUG "PCI: master abort, pc=0x%08lx\n", + instruction_pointer(regs)); + cmd |= PCI_STATUS_REC_MASTER_ABORT << 16; + } + + if (status & PCI_STATUS_REC_TARGET_ABORT) { + printk(KERN_DEBUG "PCI: target abort: "); + pcibios_report_status(PCI_STATUS_REC_MASTER_ABORT | + PCI_STATUS_SIG_TARGET_ABORT | + PCI_STATUS_REC_TARGET_ABORT, 1); + printk("\n"); + + cmd |= PCI_STATUS_REC_TARGET_ABORT << 16; + } + + *CSR_PCICMD = cmd; + + return IRQ_HANDLED; +} + +static irqreturn_t dc21285_serr_irq(int irq, void *dev_id, struct pt_regs *regs) +{ + struct timer_list *timer = dev_id; + unsigned int cntl; + + printk(KERN_DEBUG "PCI: system error received: "); + pcibios_report_status(PCI_STATUS_SIG_SYSTEM_ERROR, 1); + printk("\n"); + + cntl = *CSR_SA110_CNTL & 0xffffdf07; + *CSR_SA110_CNTL = cntl | SA110_CNTL_RXSERR; + + /* + * back off this interrupt + */ + disable_irq(irq); + timer->expires = jiffies + HZ; + add_timer(timer); + + return IRQ_HANDLED; +} + +static irqreturn_t dc21285_discard_irq(int irq, void *dev_id, struct pt_regs *regs) +{ + printk(KERN_DEBUG "PCI: discard timer expired\n"); + *CSR_SA110_CNTL &= 0xffffde07; + + return IRQ_HANDLED; +} + +static irqreturn_t dc21285_dparity_irq(int irq, void *dev_id, struct pt_regs *regs) +{ + unsigned int cmd; + + printk(KERN_DEBUG "PCI: data parity error detected: "); + pcibios_report_status(PCI_STATUS_PARITY | PCI_STATUS_DETECTED_PARITY, 1); + printk("\n"); + + cmd = *CSR_PCICMD & 0xffff; + *CSR_PCICMD = cmd | 1 << 24; + + return IRQ_HANDLED; +} + +static irqreturn_t dc21285_parity_irq(int irq, void *dev_id, struct pt_regs *regs) +{ + struct timer_list *timer = dev_id; + unsigned int cmd; + + printk(KERN_DEBUG "PCI: parity error detected: "); + pcibios_report_status(PCI_STATUS_PARITY | PCI_STATUS_DETECTED_PARITY, 1); + printk("\n"); + + cmd = *CSR_PCICMD & 0xffff; + *CSR_PCICMD = cmd | 1 << 31; + + /* + * back off this interrupt + */ + disable_irq(irq); + timer->expires = jiffies + HZ; + add_timer(timer); + + return IRQ_HANDLED; +} + +int __init dc21285_setup(int nr, struct pci_sys_data *sys) +{ + struct resource *res; + + if (nr || !footbridge_cfn_mode()) + return 0; + + res = kmalloc(sizeof(struct resource) * 2, GFP_KERNEL); + if (!res) { + printk("out of memory for root bus resources"); + return 0; + } + + memset(res, 0, sizeof(struct resource) * 2); + + res[0].flags = IORESOURCE_MEM; + res[0].name = "Footbridge non-prefetch"; + res[1].flags = IORESOURCE_MEM | IORESOURCE_PREFETCH; + res[1].name = "Footbridge prefetch"; + + allocate_resource(&iomem_resource, &res[1], 0x20000000, + 0xa0000000, 0xffffffff, 0x20000000, NULL, NULL); + allocate_resource(&iomem_resource, &res[0], 0x40000000, + 0x80000000, 0xffffffff, 0x40000000, NULL, NULL); + + sys->resource[0] = &ioport_resource; + sys->resource[1] = &res[0]; + sys->resource[2] = &res[1]; + sys->mem_offset = DC21285_PCI_MEM; + + return 1; +} + +struct pci_bus * __init dc21285_scan_bus(int nr, struct pci_sys_data *sys) +{ + return pci_scan_bus(0, &dc21285_ops, sys); +} + +void __init dc21285_preinit(void) +{ + unsigned int mem_size, mem_mask; + int cfn_mode; + + mem_size = (unsigned int)high_memory - PAGE_OFFSET; + for (mem_mask = 0x00100000; mem_mask < 0x10000000; mem_mask <<= 1) + if (mem_mask >= mem_size) + break; + + /* + * These registers need to be set up whether we're the + * central function or not. + */ + *CSR_SDRAMBASEMASK = (mem_mask - 1) & 0x0ffc0000; + *CSR_SDRAMBASEOFFSET = 0; + *CSR_ROMBASEMASK = 0x80000000; + *CSR_CSRBASEMASK = 0; + *CSR_CSRBASEOFFSET = 0; + *CSR_PCIADDR_EXTN = 0; + + cfn_mode = __footbridge_cfn_mode(); + + printk(KERN_INFO "PCI: DC21285 footbridge, revision %02lX, in " + "%s mode\n", *CSR_CLASSREV & 0xff, cfn_mode ? + "central function" : "addin"); + + if (footbridge_cfn_mode()) { + /* + * Clear any existing errors - we aren't + * interested in historical data... + */ + *CSR_SA110_CNTL = (*CSR_SA110_CNTL & 0xffffde07) | + SA110_CNTL_RXSERR; + *CSR_PCICMD = (*CSR_PCICMD & 0xffff) | PCICMD_ERROR_BITS; + } + + init_timer(&serr_timer); + init_timer(&perr_timer); + + serr_timer.data = IRQ_PCI_SERR; + serr_timer.function = dc21285_enable_error; + perr_timer.data = IRQ_PCI_PERR; + perr_timer.function = dc21285_enable_error; + + /* + * We don't care if these fail. + */ + request_irq(IRQ_PCI_SERR, dc21285_serr_irq, SA_INTERRUPT, + "PCI system error", &serr_timer); + request_irq(IRQ_PCI_PERR, dc21285_parity_irq, SA_INTERRUPT, + "PCI parity error", &perr_timer); + request_irq(IRQ_PCI_ABORT, dc21285_abort_irq, SA_INTERRUPT, + "PCI abort", NULL); + request_irq(IRQ_DISCARD_TIMER, dc21285_discard_irq, SA_INTERRUPT, + "Discard timer", NULL); + request_irq(IRQ_PCI_DPERR, dc21285_dparity_irq, SA_INTERRUPT, + "PCI data parity", NULL); + + if (cfn_mode) { + static struct resource csrio; + + csrio.flags = IORESOURCE_IO; + csrio.name = "Footbridge"; + + allocate_resource(&ioport_resource, &csrio, 128, + 0xff00, 0xffff, 128, NULL, NULL); + + /* + * Map our SDRAM at a known address in PCI space, just in case + * the firmware had other ideas. Using a nonzero base is + * necessary, since some VGA cards forcefully use PCI addresses + * in the range 0x000a0000 to 0x000c0000. (eg, S3 cards). + */ + *CSR_PCICSRBASE = 0xf4000000; + *CSR_PCICSRIOBASE = csrio.start; + *CSR_PCISDRAMBASE = __virt_to_bus(PAGE_OFFSET); + *CSR_PCIROMBASE = 0; + *CSR_PCICMD = PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | + PCI_COMMAND_INVALIDATE | PCICMD_ERROR_BITS; + } else if (footbridge_cfn_mode() != 0) { + /* + * If we are not compiled to accept "add-in" mode, then + * we are using a constant virt_to_bus translation which + * can not hope to cater for the way the host BIOS has + * set up the machine. + */ + panic("PCI: this kernel is compiled for central " + "function mode only"); + } +} + +void __init dc21285_postinit(void) +{ + register_isa_ports(DC21285_PCI_MEM, DC21285_PCI_IO, 0); +} diff --git a/arch/arm/mach-footbridge/dma.c b/arch/arm/mach-footbridge/dma.c new file mode 100644 index 000000000000..a6b1396b0951 --- /dev/null +++ b/arch/arm/mach-footbridge/dma.c @@ -0,0 +1,54 @@ +/* + * linux/arch/arm/kernel/dma-ebsa285.c + * + * Copyright (C) 1998 Phil Blundell + * + * DMA functions specific to EBSA-285/CATS architectures + * + * Changelog: + * 09-Nov-1998 RMK Split out ISA DMA functions to dma-isa.c + * 17-Mar-1999 RMK Allow any EBSA285-like architecture to have + * ISA DMA controllers. + */ +#include <linux/config.h> +#include <linux/init.h> + +#include <asm/dma.h> +#include <asm/io.h> + +#include <asm/mach/dma.h> +#include <asm/hardware/dec21285.h> + +#if 0 +static int fb_dma_request(dmach_t channel, dma_t *dma) +{ + return -EINVAL; +} + +static void fb_dma_enable(dmach_t channel, dma_t *dma) +{ +} + +static void fb_dma_disable(dmach_t channel, dma_t *dma) +{ +} + +static struct dma_ops fb_dma_ops = { + .type = "fb", + .request = fb_dma_request, + .enable = fb_dma_enable, + .disable = fb_dma_disable, +}; +#endif + +void __init arch_dma_init(dma_t *dma) +{ +#if 0 + dma[_DC21285_DMA(0)].d_ops = &fb_dma_ops; + dma[_DC21285_DMA(1)].d_ops = &fb_dma_ops; +#endif +#ifdef CONFIG_ISA_DMA + if (footbridge_cfn_mode()) + isa_init_dma(dma + _ISA_DMA(0)); +#endif +} diff --git a/arch/arm/mach-footbridge/ebsa285-leds.c b/arch/arm/mach-footbridge/ebsa285-leds.c new file mode 100644 index 000000000000..2c7c3630401b --- /dev/null +++ b/arch/arm/mach-footbridge/ebsa285-leds.c @@ -0,0 +1,140 @@ +/* + * linux/arch/arm/mach-footbridge/ebsa285-leds.c + * + * Copyright (C) 1998-1999 Russell King + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * EBSA-285 control routines. + * + * The EBSA-285 uses the leds as follows: + * - Green - toggles state every 50 timer interrupts + * - Amber - On if system is not idle + * - Red - currently unused + * + * Changelog: + * 02-05-1999 RMK Various cleanups + */ +#include <linux/config.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/spinlock.h> + +#include <asm/hardware.h> +#include <asm/leds.h> +#include <asm/mach-types.h> +#include <asm/system.h> + +#define LED_STATE_ENABLED 1 +#define LED_STATE_CLAIMED 2 +static char led_state; +static char hw_led_state; + +static DEFINE_SPINLOCK(leds_lock); + +static void ebsa285_leds_event(led_event_t evt) +{ + unsigned long flags; + + spin_lock_irqsave(&leds_lock, flags); + + switch (evt) { + case led_start: + hw_led_state = XBUS_LED_RED | XBUS_LED_GREEN; +#ifndef CONFIG_LEDS_CPU + hw_led_state |= XBUS_LED_AMBER; +#endif + led_state |= LED_STATE_ENABLED; + break; + + case led_stop: + led_state &= ~LED_STATE_ENABLED; + break; + + case led_claim: + led_state |= LED_STATE_CLAIMED; + hw_led_state = XBUS_LED_RED | XBUS_LED_GREEN | XBUS_LED_AMBER; + break; + + case led_release: + led_state &= ~LED_STATE_CLAIMED; + hw_led_state = XBUS_LED_RED | XBUS_LED_GREEN | XBUS_LED_AMBER; + break; + +#ifdef CONFIG_LEDS_TIMER + case led_timer: + if (!(led_state & LED_STATE_CLAIMED)) + hw_led_state ^= XBUS_LED_GREEN; + break; +#endif + +#ifdef CONFIG_LEDS_CPU + case led_idle_start: + if (!(led_state & LED_STATE_CLAIMED)) + hw_led_state |= XBUS_LED_AMBER; + break; + + case led_idle_end: + if (!(led_state & LED_STATE_CLAIMED)) + hw_led_state &= ~XBUS_LED_AMBER; + break; +#endif + + case led_halted: + if (!(led_state & LED_STATE_CLAIMED)) + hw_led_state &= ~XBUS_LED_RED; + break; + + case led_green_on: + if (led_state & LED_STATE_CLAIMED) + hw_led_state &= ~XBUS_LED_GREEN; + break; + + case led_green_off: + if (led_state & LED_STATE_CLAIMED) + hw_led_state |= XBUS_LED_GREEN; + break; + + case led_amber_on: + if (led_state & LED_STATE_CLAIMED) + hw_led_state &= ~XBUS_LED_AMBER; + break; + + case led_amber_off: + if (led_state & LED_STATE_CLAIMED) + hw_led_state |= XBUS_LED_AMBER; + break; + + case led_red_on: + if (led_state & LED_STATE_CLAIMED) + hw_led_state &= ~XBUS_LED_RED; + break; + + case led_red_off: + if (led_state & LED_STATE_CLAIMED) + hw_led_state |= XBUS_LED_RED; + break; + + default: + break; + } + + if (led_state & LED_STATE_ENABLED) + *XBUS_LEDS = hw_led_state; + + spin_unlock_irqrestore(&leds_lock, flags); +} + +static int __init leds_init(void) +{ + if (machine_is_ebsa285() || machine_is_co285()) + leds_event = ebsa285_leds_event; + + leds_event(led_start); + + return 0; +} + +__initcall(leds_init); diff --git a/arch/arm/mach-footbridge/ebsa285-pci.c b/arch/arm/mach-footbridge/ebsa285-pci.c new file mode 100644 index 000000000000..720c0bac1702 --- /dev/null +++ b/arch/arm/mach-footbridge/ebsa285-pci.c @@ -0,0 +1,48 @@ +/* + * linux/arch/arm/mach-footbridge/ebsa285-pci.c + * + * PCI bios-type initialisation for PCI machines + * + * Bits taken from various places. + */ +#include <linux/kernel.h> +#include <linux/pci.h> +#include <linux/init.h> + +#include <asm/irq.h> +#include <asm/mach/pci.h> +#include <asm/mach-types.h> + +static int irqmap_ebsa285[] __initdata = { IRQ_IN3, IRQ_IN1, IRQ_IN0, IRQ_PCI }; + +static int __init ebsa285_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +{ + if (dev->vendor == PCI_VENDOR_ID_CONTAQ && + dev->device == PCI_DEVICE_ID_CONTAQ_82C693) + switch (PCI_FUNC(dev->devfn)) { + case 1: return 14; + case 2: return 15; + case 3: return 12; + } + + return irqmap_ebsa285[(slot + pin) & 3]; +} + +static struct hw_pci ebsa285_pci __initdata = { + .swizzle = pci_std_swizzle, + .map_irq = ebsa285_map_irq, + .nr_controllers = 1, + .setup = dc21285_setup, + .scan = dc21285_scan_bus, + .preinit = dc21285_preinit, + .postinit = dc21285_postinit, +}; + +static int __init ebsa285_init_pci(void) +{ + if (machine_is_ebsa285()) + pci_common_init(&ebsa285_pci); + return 0; +} + +subsys_initcall(ebsa285_init_pci); diff --git a/arch/arm/mach-footbridge/ebsa285.c b/arch/arm/mach-footbridge/ebsa285.c new file mode 100644 index 000000000000..d0931f5a63c8 --- /dev/null +++ b/arch/arm/mach-footbridge/ebsa285.c @@ -0,0 +1,24 @@ +/* + * linux/arch/arm/mach-footbridge/ebsa285.c + * + * EBSA285 machine fixup + */ +#include <linux/init.h> + +#include <asm/hardware/dec21285.h> +#include <asm/mach-types.h> + +#include <asm/mach/arch.h> + +#include "common.h" + +MACHINE_START(EBSA285, "EBSA285") + MAINTAINER("Russell King") + BOOT_MEM(0x00000000, DC21285_ARMCSR_BASE, 0xfe000000) + BOOT_PARAMS(0x00000100) + VIDEO(0x000a0000, 0x000bffff) + MAPIO(footbridge_map_io) + INITIRQ(footbridge_init_irq) + .timer = &footbridge_timer, +MACHINE_END + diff --git a/arch/arm/mach-footbridge/isa-irq.c b/arch/arm/mach-footbridge/isa-irq.c new file mode 100644 index 000000000000..b21016070ea3 --- /dev/null +++ b/arch/arm/mach-footbridge/isa-irq.c @@ -0,0 +1,168 @@ +/* + * linux/arch/arm/mach-footbridge/irq.c + * + * Copyright (C) 1996-2000 Russell King + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Changelog: + * 22-Aug-1998 RMK Restructured IRQ routines + * 03-Sep-1998 PJB Merged CATS support + * 20-Jan-1998 RMK Started merge of EBSA286, CATS and NetWinder + * 26-Jan-1999 PJB Don't use IACK on CATS + * 16-Mar-1999 RMK Added autodetect of ISA PICs + */ +#include <linux/ioport.h> +#include <linux/interrupt.h> +#include <linux/list.h> +#include <linux/init.h> + +#include <asm/mach/irq.h> + +#include <asm/hardware.h> +#include <asm/hardware/dec21285.h> +#include <asm/irq.h> +#include <asm/io.h> +#include <asm/mach-types.h> + +static void isa_mask_pic_lo_irq(unsigned int irq) +{ + unsigned int mask = 1 << (irq & 7); + + outb(inb(PIC_MASK_LO) | mask, PIC_MASK_LO); +} + +static void isa_ack_pic_lo_irq(unsigned int irq) +{ + unsigned int mask = 1 << (irq & 7); + + outb(inb(PIC_MASK_LO) | mask, PIC_MASK_LO); + outb(0x20, PIC_LO); +} + +static void isa_unmask_pic_lo_irq(unsigned int irq) +{ + unsigned int mask = 1 << (irq & 7); + + outb(inb(PIC_MASK_LO) & ~mask, PIC_MASK_LO); +} + +static struct irqchip isa_lo_chip = { + .ack = isa_ack_pic_lo_irq, + .mask = isa_mask_pic_lo_irq, + .unmask = isa_unmask_pic_lo_irq, +}; + +static void isa_mask_pic_hi_irq(unsigned int irq) +{ + unsigned int mask = 1 << (irq & 7); + + outb(inb(PIC_MASK_HI) | mask, PIC_MASK_HI); +} + +static void isa_ack_pic_hi_irq(unsigned int irq) +{ + unsigned int mask = 1 << (irq & 7); + + outb(inb(PIC_MASK_HI) | mask, PIC_MASK_HI); + outb(0x62, PIC_LO); + outb(0x20, PIC_HI); +} + +static void isa_unmask_pic_hi_irq(unsigned int irq) +{ + unsigned int mask = 1 << (irq & 7); + + outb(inb(PIC_MASK_HI) & ~mask, PIC_MASK_HI); +} + +static struct irqchip isa_hi_chip = { + .ack = isa_ack_pic_hi_irq, + .mask = isa_mask_pic_hi_irq, + .unmask = isa_unmask_pic_hi_irq, +}; + +static void +isa_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs) +{ + unsigned int isa_irq = *(unsigned char *)PCIIACK_BASE; + + if (isa_irq < _ISA_IRQ(0) || isa_irq >= _ISA_IRQ(16)) { + do_bad_IRQ(isa_irq, desc, regs); + return; + } + + desc = irq_desc + isa_irq; + desc->handle(isa_irq, desc, regs); +} + +static struct irqaction irq_cascade = { .handler = no_action, .name = "cascade", }; +static struct resource pic1_resource = { "pic1", 0x20, 0x3f }; +static struct resource pic2_resource = { "pic2", 0xa0, 0xbf }; + +void __init isa_init_irq(unsigned int host_irq) +{ + unsigned int irq; + + /* + * Setup, and then probe for an ISA PIC + * If the PIC is not there, then we + * ignore the PIC. + */ + outb(0x11, PIC_LO); + outb(_ISA_IRQ(0), PIC_MASK_LO); /* IRQ number */ + outb(0x04, PIC_MASK_LO); /* Slave on Ch2 */ + outb(0x01, PIC_MASK_LO); /* x86 */ + outb(0xf5, PIC_MASK_LO); /* pattern: 11110101 */ + + outb(0x11, PIC_HI); + outb(_ISA_IRQ(8), PIC_MASK_HI); /* IRQ number */ + outb(0x02, PIC_MASK_HI); /* Slave on Ch1 */ + outb(0x01, PIC_MASK_HI); /* x86 */ + outb(0xfa, PIC_MASK_HI); /* pattern: 11111010 */ + + outb(0x0b, PIC_LO); + outb(0x0b, PIC_HI); + + if (inb(PIC_MASK_LO) == 0xf5 && inb(PIC_MASK_HI) == 0xfa) { + outb(0xff, PIC_MASK_LO);/* mask all IRQs */ + outb(0xff, PIC_MASK_HI);/* mask all IRQs */ + } else { + printk(KERN_INFO "IRQ: ISA PIC not found\n"); + host_irq = (unsigned int)-1; + } + + if (host_irq != (unsigned int)-1) { + for (irq = _ISA_IRQ(0); irq < _ISA_IRQ(8); irq++) { + set_irq_chip(irq, &isa_lo_chip); + set_irq_handler(irq, do_level_IRQ); + set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); + } + + for (irq = _ISA_IRQ(8); irq < _ISA_IRQ(16); irq++) { + set_irq_chip(irq, &isa_hi_chip); + set_irq_handler(irq, do_level_IRQ); + set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); + } + + request_resource(&ioport_resource, &pic1_resource); + request_resource(&ioport_resource, &pic2_resource); + setup_irq(IRQ_ISA_CASCADE, &irq_cascade); + + set_irq_chained_handler(host_irq, isa_irq_handler); + + /* + * On the NetWinder, don't automatically + * enable ISA IRQ11 when it is requested. + * There appears to be a missing pull-up + * resistor on this line. + */ + if (machine_is_netwinder()) + set_irq_flags(_ISA_IRQ(11), IRQF_VALID | + IRQF_PROBE | IRQF_NOAUTOEN); + } +} + + diff --git a/arch/arm/mach-footbridge/isa-timer.c b/arch/arm/mach-footbridge/isa-timer.c new file mode 100644 index 000000000000..a4fefa0bb5a1 --- /dev/null +++ b/arch/arm/mach-footbridge/isa-timer.c @@ -0,0 +1,94 @@ +/* + * linux/arch/arm/mach-footbridge/isa-timer.c + * + * Copyright (C) 1998 Russell King. + * Copyright (C) 1998 Phil Blundell + */ +#include <linux/init.h> +#include <linux/interrupt.h> + +#include <asm/io.h> +#include <asm/irq.h> + +#include <asm/mach/time.h> + +#include "common.h" + +/* + * ISA timer tick support + */ +#define mSEC_10_from_14 ((14318180 + 100) / 200) + +static unsigned long isa_gettimeoffset(void) +{ + int count; + + static int count_p = (mSEC_10_from_14/6); /* for the first call after boot */ + static unsigned long jiffies_p = 0; + + /* + * cache volatile jiffies temporarily; we have IRQs turned off. + */ + unsigned long jiffies_t; + + /* timer count may underflow right here */ + outb_p(0x00, 0x43); /* latch the count ASAP */ + + count = inb_p(0x40); /* read the latched count */ + + /* + * We do this guaranteed double memory access instead of a _p + * postfix in the previous port access. Wheee, hackady hack + */ + jiffies_t = jiffies; + + count |= inb_p(0x40) << 8; + + /* Detect timer underflows. If we haven't had a timer tick since + the last time we were called, and time is apparently going + backwards, the counter must have wrapped during this routine. */ + if ((jiffies_t == jiffies_p) && (count > count_p)) + count -= (mSEC_10_from_14/6); + else + jiffies_p = jiffies_t; + + count_p = count; + + count = (((mSEC_10_from_14/6)-1) - count) * (tick_nsec / 1000); + count = (count + (mSEC_10_from_14/6)/2) / (mSEC_10_from_14/6); + + return count; +} + +static irqreturn_t +isa_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + write_seqlock(&xtime_lock); + timer_tick(regs); + write_sequnlock(&xtime_lock); + return IRQ_HANDLED; +} + +static struct irqaction isa_timer_irq = { + .name = "ISA timer tick", + .handler = isa_timer_interrupt, + .flags = SA_INTERRUPT, +}; + +static void __init isa_timer_init(void) +{ + isa_rtc_init(); + + /* enable PIT timer */ + /* set for periodic (4) and LSB/MSB write (0x30) */ + outb(0x34, 0x43); + outb((mSEC_10_from_14/6) & 0xFF, 0x40); + outb((mSEC_10_from_14/6) >> 8, 0x40); + + setup_irq(IRQ_ISA_TIMER, &isa_timer_irq); +} + +struct sys_timer isa_timer = { + .init = isa_timer_init, + .offset = isa_gettimeoffset, +}; diff --git a/arch/arm/mach-footbridge/isa.c b/arch/arm/mach-footbridge/isa.c new file mode 100644 index 000000000000..aa3a1fef563e --- /dev/null +++ b/arch/arm/mach-footbridge/isa.c @@ -0,0 +1,48 @@ +/* + * linux/arch/arm/mach-footbridge/isa.c + * + * Copyright (C) 2004 Russell King. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/init.h> +#include <linux/serial_8250.h> + +#include <asm/irq.h> + +static struct plat_serial8250_port serial_platform_data[] = { + { + .iobase = 0x3f8, + .irq = IRQ_ISA_UART, + .uartclk = 1843200, + .regshift = 0, + .iotype = UPIO_PORT, + .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, + }, + { + .iobase = 0x2f8, + .irq = IRQ_ISA_UART2, + .uartclk = 1843200, + .regshift = 0, + .iotype = UPIO_PORT, + .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, + }, + { }, +}; + +static struct platform_device serial_device = { + .name = "serial8250", + .id = 0, + .dev = { + .platform_data = serial_platform_data, + }, +}; + +static int __init footbridge_isa_init(void) +{ + return platform_device_register(&serial_device); +} + +arch_initcall(footbridge_isa_init); diff --git a/arch/arm/mach-footbridge/netwinder-hw.c b/arch/arm/mach-footbridge/netwinder-hw.c new file mode 100644 index 000000000000..1e1dfd79f4fe --- /dev/null +++ b/arch/arm/mach-footbridge/netwinder-hw.c @@ -0,0 +1,660 @@ +/* + * linux/arch/arm/mach-footbridge/netwinder-hw.c + * + * Netwinder machine fixup + * + * Copyright (C) 1998, 1999 Russell King, Phil Blundell + */ +#include <linux/config.h> +#include <linux/module.h> +#include <linux/ioport.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/init.h> + +#include <asm/hardware/dec21285.h> +#include <asm/io.h> +#include <asm/leds.h> +#include <asm/mach-types.h> +#include <asm/setup.h> + +#include <asm/mach/arch.h> + +#include "common.h" + +#define IRDA_IO_BASE 0x180 +#define GP1_IO_BASE 0x338 +#define GP2_IO_BASE 0x33a + + +#ifdef CONFIG_LEDS +#define DEFAULT_LEDS 0 +#else +#define DEFAULT_LEDS GPIO_GREEN_LED +#endif + +/* + * Winbond WB83977F accessibility stuff + */ +static inline void wb977_open(void) +{ + outb(0x87, 0x370); + outb(0x87, 0x370); +} + +static inline void wb977_close(void) +{ + outb(0xaa, 0x370); +} + +static inline void wb977_wb(int reg, int val) +{ + outb(reg, 0x370); + outb(val, 0x371); +} + +static inline void wb977_ww(int reg, int val) +{ + outb(reg, 0x370); + outb(val >> 8, 0x371); + outb(reg + 1, 0x370); + outb(val & 255, 0x371); +} + +#define wb977_device_select(dev) wb977_wb(0x07, dev) +#define wb977_device_disable() wb977_wb(0x30, 0x00) +#define wb977_device_enable() wb977_wb(0x30, 0x01) + +/* + * This is a lock for accessing ports GP1_IO_BASE and GP2_IO_BASE + */ +DEFINE_SPINLOCK(gpio_lock); + +static unsigned int current_gpio_op; +static unsigned int current_gpio_io; +static unsigned int current_cpld; + +void gpio_modify_op(int mask, int set) +{ + unsigned int new_gpio, changed; + + new_gpio = (current_gpio_op & ~mask) | set; + changed = new_gpio ^ current_gpio_op; + current_gpio_op = new_gpio; + + if (changed & 0xff) + outb(new_gpio, GP1_IO_BASE); + if (changed & 0xff00) + outb(new_gpio >> 8, GP2_IO_BASE); +} + +static inline void __gpio_modify_io(int mask, int in) +{ + unsigned int new_gpio, changed; + int port; + + new_gpio = (current_gpio_io & ~mask) | in; + changed = new_gpio ^ current_gpio_io; + current_gpio_io = new_gpio; + + changed >>= 1; + new_gpio >>= 1; + + wb977_device_select(7); + + for (port = 0xe1; changed && port < 0xe8; changed >>= 1) { + wb977_wb(port, new_gpio & 1); + + port += 1; + new_gpio >>= 1; + } + + wb977_device_select(8); + + for (port = 0xe8; changed && port < 0xec; changed >>= 1) { + wb977_wb(port, new_gpio & 1); + + port += 1; + new_gpio >>= 1; + } +} + +void gpio_modify_io(int mask, int in) +{ + /* Open up the SuperIO chip */ + wb977_open(); + + __gpio_modify_io(mask, in); + + /* Close up the EFER gate */ + wb977_close(); +} + +int gpio_read(void) +{ + return inb(GP1_IO_BASE) | inb(GP2_IO_BASE) << 8; +} + +/* + * Initialise the Winbond W83977F global registers + */ +static inline void wb977_init_global(void) +{ + /* + * Enable R/W config registers + */ + wb977_wb(0x26, 0x40); + + /* + * Power down FDC (not used) + */ + wb977_wb(0x22, 0xfe); + + /* + * GP12, GP11, CIRRX, IRRXH, GP10 + */ + wb977_wb(0x2a, 0xc1); + + /* + * GP23, GP22, GP21, GP20, GP13 + */ + wb977_wb(0x2b, 0x6b); + + /* + * GP17, GP16, GP15, GP14 + */ + wb977_wb(0x2c, 0x55); +} + +/* + * Initialise the Winbond W83977F printer port + */ +static inline void wb977_init_printer(void) +{ + wb977_device_select(1); + + /* + * mode 1 == EPP + */ + wb977_wb(0xf0, 0x01); +} + +/* + * Initialise the Winbond W83977F keyboard controller + */ +static inline void wb977_init_keyboard(void) +{ + wb977_device_select(5); + + /* + * Keyboard controller address + */ + wb977_ww(0x60, 0x0060); + wb977_ww(0x62, 0x0064); + + /* + * Keyboard IRQ 1, active high, edge trigger + */ + wb977_wb(0x70, 1); + wb977_wb(0x71, 0x02); + + /* + * Mouse IRQ 5, active high, edge trigger + */ + wb977_wb(0x72, 5); + wb977_wb(0x73, 0x02); + + /* + * KBC 8MHz + */ + wb977_wb(0xf0, 0x40); + + /* + * Enable device + */ + wb977_device_enable(); +} + +/* + * Initialise the Winbond W83977F Infra-Red device + */ +static inline void wb977_init_irda(void) +{ + wb977_device_select(6); + + /* + * IR base address + */ + wb977_ww(0x60, IRDA_IO_BASE); + + /* + * IRDA IRQ 6, active high, edge trigger + */ + wb977_wb(0x70, 6); + wb977_wb(0x71, 0x02); + + /* + * RX DMA - ISA DMA 0 + */ + wb977_wb(0x74, 0x00); + + /* + * TX DMA - Disable Tx DMA + */ + wb977_wb(0x75, 0x04); + + /* + * Append CRC, Enable bank selection + */ + wb977_wb(0xf0, 0x03); + + /* + * Enable device + */ + wb977_device_enable(); +} + +/* + * Initialise Winbond W83977F general purpose IO + */ +static inline void wb977_init_gpio(void) +{ + unsigned long flags; + + /* + * Set up initial I/O definitions + */ + current_gpio_io = -1; + __gpio_modify_io(-1, GPIO_DONE | GPIO_WDTIMER); + + wb977_device_select(7); + + /* + * Group1 base address + */ + wb977_ww(0x60, GP1_IO_BASE); + wb977_ww(0x62, 0); + wb977_ww(0x64, 0); + + /* + * GP10 (Orage button) IRQ 10, active high, edge trigger + */ + wb977_wb(0x70, 10); + wb977_wb(0x71, 0x02); + + /* + * GP10: Debounce filter enabled, IRQ, input + */ + wb977_wb(0xe0, 0x19); + + /* + * Enable Group1 + */ + wb977_device_enable(); + + wb977_device_select(8); + + /* + * Group2 base address + */ + wb977_ww(0x60, GP2_IO_BASE); + + /* + * Clear watchdog timer regs + * - timer disable + */ + wb977_wb(0xf2, 0x00); + + /* + * - disable LED, no mouse nor keyboard IRQ + */ + wb977_wb(0xf3, 0x00); + + /* + * - timer counting, disable power LED, disable timeouot + */ + wb977_wb(0xf4, 0x00); + + /* + * Enable group2 + */ + wb977_device_enable(); + + /* + * Set Group1/Group2 outputs + */ + spin_lock_irqsave(&gpio_lock, flags); + gpio_modify_op(-1, GPIO_RED_LED | GPIO_FAN); + spin_unlock_irqrestore(&gpio_lock, flags); +} + +/* + * Initialise the Winbond W83977F chip. + */ +static void __init wb977_init(void) +{ + request_region(0x370, 2, "W83977AF configuration"); + + /* + * Open up the SuperIO chip + */ + wb977_open(); + + /* + * Initialise the global registers + */ + wb977_init_global(); + + /* + * Initialise the various devices in + * the multi-IO chip. + */ + wb977_init_printer(); + wb977_init_keyboard(); + wb977_init_irda(); + wb977_init_gpio(); + + /* + * Close up the EFER gate + */ + wb977_close(); +} + +void cpld_modify(int mask, int set) +{ + int msk; + + current_cpld = (current_cpld & ~mask) | set; + + gpio_modify_io(GPIO_DATA | GPIO_IOCLK | GPIO_IOLOAD, 0); + gpio_modify_op(GPIO_IOLOAD, 0); + + for (msk = 8; msk; msk >>= 1) { + int bit = current_cpld & msk; + + gpio_modify_op(GPIO_DATA | GPIO_IOCLK, bit ? GPIO_DATA : 0); + gpio_modify_op(GPIO_IOCLK, GPIO_IOCLK); + } + + gpio_modify_op(GPIO_IOCLK|GPIO_DATA, 0); + gpio_modify_op(GPIO_IOLOAD|GPIO_DSCLK, GPIO_IOLOAD|GPIO_DSCLK); + gpio_modify_op(GPIO_IOLOAD, 0); +} + +static void __init cpld_init(void) +{ + unsigned long flags; + + spin_lock_irqsave(&gpio_lock, flags); + cpld_modify(-1, CPLD_UNMUTE | CPLD_7111_DISABLE); + spin_unlock_irqrestore(&gpio_lock, flags); +} + +static unsigned char rwa_unlock[] __initdata = +{ 0x00, 0x00, 0x6a, 0xb5, 0xda, 0xed, 0xf6, 0xfb, 0x7d, 0xbe, 0xdf, 0x6f, 0x37, 0x1b, + 0x0d, 0x86, 0xc3, 0x61, 0xb0, 0x58, 0x2c, 0x16, 0x8b, 0x45, 0xa2, 0xd1, 0xe8, 0x74, + 0x3a, 0x9d, 0xce, 0xe7, 0x73, 0x39 }; + +#ifndef DEBUG +#define dprintk(x...) +#else +#define dprintk(x...) printk(x) +#endif + +#define WRITE_RWA(r,v) do { outb((r), 0x279); udelay(10); outb((v), 0xa79); } while (0) + +static inline void rwa010_unlock(void) +{ + int i; + + WRITE_RWA(2, 2); + mdelay(10); + + for (i = 0; i < sizeof(rwa_unlock); i++) { + outb(rwa_unlock[i], 0x279); + udelay(10); + } +} + +static inline void rwa010_read_ident(void) +{ + unsigned char si[9]; + int i, j; + + WRITE_RWA(3, 0); + WRITE_RWA(0, 128); + + outb(1, 0x279); + + mdelay(1); + + dprintk("Identifier: "); + for (i = 0; i < 9; i++) { + si[i] = 0; + for (j = 0; j < 8; j++) { + int bit; + udelay(250); + inb(0x203); + udelay(250); + bit = inb(0x203); + dprintk("%02X ", bit); + bit = (bit == 0xaa) ? 1 : 0; + si[i] |= bit << j; + } + dprintk("(%02X) ", si[i]); + } + dprintk("\n"); +} + +static inline void rwa010_global_init(void) +{ + WRITE_RWA(6, 2); // Assign a card no = 2 + + dprintk("Card no = %d\n", inb(0x203)); + + /* disable the modem section of the chip */ + WRITE_RWA(7, 3); + WRITE_RWA(0x30, 0); + + /* disable the cdrom section of the chip */ + WRITE_RWA(7, 4); + WRITE_RWA(0x30, 0); + + /* disable the MPU-401 section of the chip */ + WRITE_RWA(7, 2); + WRITE_RWA(0x30, 0); +} + +static inline void rwa010_game_port_init(void) +{ + int i; + + WRITE_RWA(7, 5); + + dprintk("Slider base: "); + WRITE_RWA(0x61, 1); + i = inb(0x203); + + WRITE_RWA(0x60, 2); + dprintk("%02X%02X (201)\n", inb(0x203), i); + + WRITE_RWA(0x30, 1); +} + +static inline void rwa010_waveartist_init(int base, int irq, int dma) +{ + int i; + + WRITE_RWA(7, 0); + + dprintk("WaveArtist base: "); + WRITE_RWA(0x61, base & 255); + i = inb(0x203); + + WRITE_RWA(0x60, base >> 8); + dprintk("%02X%02X (%X),", inb(0x203), i, base); + + WRITE_RWA(0x70, irq); + dprintk(" irq: %d (%d),", inb(0x203), irq); + + WRITE_RWA(0x74, dma); + dprintk(" dma: %d (%d)\n", inb(0x203), dma); + + WRITE_RWA(0x30, 1); +} + +static inline void rwa010_soundblaster_init(int sb_base, int al_base, int irq, int dma) +{ + int i; + + WRITE_RWA(7, 1); + + dprintk("SoundBlaster base: "); + WRITE_RWA(0x61, sb_base & 255); + i = inb(0x203); + + WRITE_RWA(0x60, sb_base >> 8); + dprintk("%02X%02X (%X),", inb(0x203), i, sb_base); + + dprintk(" irq: "); + WRITE_RWA(0x70, irq); + dprintk("%d (%d),", inb(0x203), irq); + + dprintk(" 8-bit DMA: "); + WRITE_RWA(0x74, dma); + dprintk("%d (%d)\n", inb(0x203), dma); + + dprintk("AdLib base: "); + WRITE_RWA(0x63, al_base & 255); + i = inb(0x203); + + WRITE_RWA(0x62, al_base >> 8); + dprintk("%02X%02X (%X)\n", inb(0x203), i, al_base); + + WRITE_RWA(0x30, 1); +} + +static void rwa010_soundblaster_reset(void) +{ + int i; + + outb(1, 0x226); + udelay(3); + outb(0, 0x226); + + for (i = 0; i < 5; i++) { + if (inb(0x22e) & 0x80) + break; + mdelay(1); + } + if (i == 5) + printk("SoundBlaster: DSP reset failed\n"); + + dprintk("SoundBlaster DSP reset: %02X (AA)\n", inb(0x22a)); + + for (i = 0; i < 5; i++) { + if ((inb(0x22c) & 0x80) == 0) + break; + mdelay(1); + } + + if (i == 5) + printk("SoundBlaster: DSP not ready\n"); + else { + outb(0xe1, 0x22c); + + dprintk("SoundBlaster DSP id: "); + i = inb(0x22a); + udelay(1); + i |= inb(0x22a) << 8; + dprintk("%04X\n", i); + + for (i = 0; i < 5; i++) { + if ((inb(0x22c) & 0x80) == 0) + break; + mdelay(1); + } + + if (i == 5) + printk("SoundBlaster: could not turn speaker off\n"); + + outb(0xd3, 0x22c); + } + + /* turn on OPL3 */ + outb(5, 0x38a); + outb(1, 0x38b); +} + +static void __init rwa010_init(void) +{ + rwa010_unlock(); + rwa010_read_ident(); + rwa010_global_init(); + rwa010_game_port_init(); + rwa010_waveartist_init(0x250, 3, 7); + rwa010_soundblaster_init(0x220, 0x388, 3, 1); + rwa010_soundblaster_reset(); +} + +EXPORT_SYMBOL(gpio_lock); +EXPORT_SYMBOL(gpio_modify_op); +EXPORT_SYMBOL(gpio_modify_io); +EXPORT_SYMBOL(cpld_modify); + +/* + * Initialise any other hardware after we've got the PCI bus + * initialised. We may need the PCI bus to talk to this other + * hardware. + */ +static int __init nw_hw_init(void) +{ + if (machine_is_netwinder()) { + unsigned long flags; + + wb977_init(); + cpld_init(); + rwa010_init(); + + spin_lock_irqsave(&gpio_lock, flags); + gpio_modify_op(GPIO_RED_LED|GPIO_GREEN_LED, DEFAULT_LEDS); + spin_unlock_irqrestore(&gpio_lock, flags); + } + return 0; +} + +__initcall(nw_hw_init); + +/* + * Older NeTTroms either do not provide a parameters + * page, or they don't supply correct information in + * the parameter page. + */ +static void __init +fixup_netwinder(struct machine_desc *desc, struct tag *tags, + char **cmdline, struct meminfo *mi) +{ +#ifdef CONFIG_ISAPNP + extern int isapnp_disable; + + /* + * We must not use the kernels ISAPnP code + * on the NetWinder - it will reset the settings + * for the WaveArtist chip and render it inoperable. + */ + isapnp_disable = 1; +#endif +} + +MACHINE_START(NETWINDER, "Rebel-NetWinder") + MAINTAINER("Russell King/Rebel.com") + BOOT_MEM(0x00000000, DC21285_ARMCSR_BASE, 0xfe000000) + BOOT_PARAMS(0x00000100) + VIDEO(0x000a0000, 0x000bffff) + DISABLE_PARPORT(0) + DISABLE_PARPORT(2) + FIXUP(fixup_netwinder) + MAPIO(footbridge_map_io) + INITIRQ(footbridge_init_irq) + .timer = &isa_timer, +MACHINE_END diff --git a/arch/arm/mach-footbridge/netwinder-leds.c b/arch/arm/mach-footbridge/netwinder-leds.c new file mode 100644 index 000000000000..7451fc07b85a --- /dev/null +++ b/arch/arm/mach-footbridge/netwinder-leds.c @@ -0,0 +1,141 @@ +/* + * linux/arch/arm/mach-footbridge/netwinder-leds.c + * + * Copyright (C) 1998-1999 Russell King + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * NetWinder LED control routines. + * + * The Netwinder uses the leds as follows: + * - Green - toggles state every 50 timer interrupts + * - Red - On if the system is not idle + * + * Changelog: + * 02-05-1999 RMK Various cleanups + */ +#include <linux/config.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/spinlock.h> + +#include <asm/hardware.h> +#include <asm/leds.h> +#include <asm/mach-types.h> +#include <asm/system.h> + +#define LED_STATE_ENABLED 1 +#define LED_STATE_CLAIMED 2 +static char led_state; +static char hw_led_state; + +static DEFINE_SPINLOCK(leds_lock); +extern spinlock_t gpio_lock; + +static void netwinder_leds_event(led_event_t evt) +{ + unsigned long flags; + + spin_lock_irqsave(&leds_lock, flags); + + switch (evt) { + case led_start: + led_state |= LED_STATE_ENABLED; + hw_led_state = GPIO_GREEN_LED; + break; + + case led_stop: + led_state &= ~LED_STATE_ENABLED; + break; + + case led_claim: + led_state |= LED_STATE_CLAIMED; + hw_led_state = 0; + break; + + case led_release: + led_state &= ~LED_STATE_CLAIMED; + hw_led_state = 0; + break; + +#ifdef CONFIG_LEDS_TIMER + case led_timer: + if (!(led_state & LED_STATE_CLAIMED)) + hw_led_state ^= GPIO_GREEN_LED; + break; +#endif + +#ifdef CONFIG_LEDS_CPU + case led_idle_start: + if (!(led_state & LED_STATE_CLAIMED)) + hw_led_state &= ~GPIO_RED_LED; + break; + + case led_idle_end: + if (!(led_state & LED_STATE_CLAIMED)) + hw_led_state |= GPIO_RED_LED; + break; +#endif + + case led_halted: + if (!(led_state & LED_STATE_CLAIMED)) + hw_led_state |= GPIO_RED_LED; + break; + + case led_green_on: + if (led_state & LED_STATE_CLAIMED) + hw_led_state |= GPIO_GREEN_LED; + break; + + case led_green_off: + if (led_state & LED_STATE_CLAIMED) + hw_led_state &= ~GPIO_GREEN_LED; + break; + + case led_amber_on: + if (led_state & LED_STATE_CLAIMED) + hw_led_state |= GPIO_GREEN_LED | GPIO_RED_LED; + break; + + case led_amber_off: + if (led_state & LED_STATE_CLAIMED) + hw_led_state &= ~(GPIO_GREEN_LED | GPIO_RED_LED); + break; + + case led_red_on: + if (led_state & LED_STATE_CLAIMED) + hw_led_state |= GPIO_RED_LED; + break; + + case led_red_off: + if (led_state & LED_STATE_CLAIMED) + hw_led_state &= ~GPIO_RED_LED; + break; + + default: + break; + } + + spin_unlock_irqrestore(&leds_lock, flags); + + if (led_state & LED_STATE_ENABLED) { + spin_lock_irqsave(&gpio_lock, flags); + gpio_modify_op(GPIO_RED_LED | GPIO_GREEN_LED, hw_led_state); + spin_unlock_irqrestore(&gpio_lock, flags); + } +} + +static int __init leds_init(void) +{ + if (machine_is_netwinder()) + leds_event = netwinder_leds_event; + + leds_event(led_start); + + return 0; +} + +__initcall(leds_init); diff --git a/arch/arm/mach-footbridge/netwinder-pci.c b/arch/arm/mach-footbridge/netwinder-pci.c new file mode 100644 index 000000000000..e263d6d54a0f --- /dev/null +++ b/arch/arm/mach-footbridge/netwinder-pci.c @@ -0,0 +1,62 @@ +/* + * linux/arch/arm/mach-footbridge/netwinder-pci.c + * + * PCI bios-type initialisation for PCI machines + * + * Bits taken from various places. + */ +#include <linux/kernel.h> +#include <linux/pci.h> +#include <linux/init.h> + +#include <asm/irq.h> +#include <asm/mach/pci.h> +#include <asm/mach-types.h> + +/* + * We now use the slot ID instead of the device identifiers to select + * which interrupt is routed where. + */ +static int __init netwinder_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +{ + switch (slot) { + case 0: /* host bridge */ + return 0; + + case 9: /* CyberPro */ + return IRQ_NETWINDER_VGA; + + case 10: /* DC21143 */ + return IRQ_NETWINDER_ETHER100; + + case 12: /* Winbond 553 */ + return IRQ_ISA_HARDDISK1; + + case 13: /* Winbond 89C940F */ + return IRQ_NETWINDER_ETHER10; + + default: + printk(KERN_ERR "PCI: unknown device in slot %s\n", + pci_name(dev)); + return 0; + } +} + +static struct hw_pci netwinder_pci __initdata = { + .swizzle = pci_std_swizzle, + .map_irq = netwinder_map_irq, + .nr_controllers = 1, + .setup = dc21285_setup, + .scan = dc21285_scan_bus, + .preinit = dc21285_preinit, + .postinit = dc21285_postinit, +}; + +static int __init netwinder_pci_init(void) +{ + if (machine_is_netwinder()) + pci_common_init(&netwinder_pci); + return 0; +} + +subsys_initcall(netwinder_pci_init); diff --git a/arch/arm/mach-footbridge/personal-pci.c b/arch/arm/mach-footbridge/personal-pci.c new file mode 100644 index 000000000000..d5fca95afdad --- /dev/null +++ b/arch/arm/mach-footbridge/personal-pci.c @@ -0,0 +1,56 @@ +/* + * linux/arch/arm/mach-footbridge/personal-pci.c + * + * PCI bios-type initialisation for PCI machines + * + * Bits taken from various places. + */ +#include <linux/kernel.h> +#include <linux/pci.h> +#include <linux/init.h> + +#include <asm/irq.h> +#include <asm/mach/pci.h> +#include <asm/mach-types.h> + +static int irqmap_personal_server[] __initdata = { + IRQ_IN0, IRQ_IN1, IRQ_IN2, IRQ_IN3, 0, 0, 0, + IRQ_DOORBELLHOST, IRQ_DMA1, IRQ_DMA2, IRQ_PCI +}; + +static int __init personal_server_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +{ + unsigned char line; + + pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &line); + + if (line > 0x40 && line <= 0x5f) { + /* line corresponds to the bit controlling this interrupt + * in the footbridge. Ignore the first 8 interrupt bits, + * look up the rest in the map. IN0 is bit number 8 + */ + return irqmap_personal_server[(line & 0x1f) - 8]; + } else if (line == 0) { + /* no interrupt */ + return 0; + } else + return irqmap_personal_server[(line - 1) & 3]; +} + +static struct hw_pci personal_server_pci __initdata = { + .map_irq = personal_server_map_irq, + .nr_controllers = 1, + .setup = dc21285_setup, + .scan = dc21285_scan_bus, + .preinit = dc21285_preinit, + .postinit = dc21285_postinit, +}; + +static int __init personal_pci_init(void) +{ + if (machine_is_personal_server()) + pci_common_init(&personal_server_pci); + return 0; +} + +subsys_initcall(personal_pci_init); diff --git a/arch/arm/mach-footbridge/personal.c b/arch/arm/mach-footbridge/personal.c new file mode 100644 index 000000000000..415086d7bbee --- /dev/null +++ b/arch/arm/mach-footbridge/personal.c @@ -0,0 +1,23 @@ +/* + * linux/arch/arm/mach-footbridge/personal.c + * + * Personal server (Skiff) machine fixup + */ +#include <linux/init.h> + +#include <asm/hardware/dec21285.h> +#include <asm/mach-types.h> + +#include <asm/mach/arch.h> + +#include "common.h" + +MACHINE_START(PERSONAL_SERVER, "Compaq-PersonalServer") + MAINTAINER("Jamey Hicks / George France") + BOOT_MEM(0x00000000, DC21285_ARMCSR_BASE, 0xfe000000) + BOOT_PARAMS(0x00000100) + MAPIO(footbridge_map_io) + INITIRQ(footbridge_init_irq) + .timer = &footbridge_timer, +MACHINE_END + diff --git a/arch/arm/mach-footbridge/time.c b/arch/arm/mach-footbridge/time.c new file mode 100644 index 000000000000..2c64a0b0502e --- /dev/null +++ b/arch/arm/mach-footbridge/time.c @@ -0,0 +1,180 @@ +/* + * linux/include/asm-arm/arch-ebsa285/time.h + * + * Copyright (C) 1998 Russell King. + * Copyright (C) 1998 Phil Blundell + * + * CATS has a real-time clock, though the evaluation board doesn't. + * + * Changelog: + * 21-Mar-1998 RMK Created + * 27-Aug-1998 PJB CATS support + * 28-Dec-1998 APH Made leds optional + * 20-Jan-1999 RMK Started merge of EBSA285, CATS and NetWinder + * 16-Mar-1999 RMK More support for EBSA285-like machines with RTCs in + */ + +#define RTC_PORT(x) (rtc_base+(x)) +#define RTC_ALWAYS_BCD 0 + +#include <linux/timex.h> +#include <linux/init.h> +#include <linux/sched.h> +#include <linux/mc146818rtc.h> +#include <linux/bcd.h> + +#include <asm/hardware.h> +#include <asm/io.h> + +#include <asm/mach/time.h> +#include "common.h" + +static int rtc_base; + +static unsigned long __init get_isa_cmos_time(void) +{ + unsigned int year, mon, day, hour, min, sec; + int i; + + // check to see if the RTC makes sense..... + if ((CMOS_READ(RTC_VALID) & RTC_VRT) == 0) + return mktime(1970, 1, 1, 0, 0, 0); + + /* The Linux interpretation of the CMOS clock register contents: + * When the Update-In-Progress (UIP) flag goes from 1 to 0, the + * RTC registers show the second which has precisely just started. + * Let's hope other operating systems interpret the RTC the same way. + */ + /* read RTC exactly on falling edge of update flag */ + for (i = 0 ; i < 1000000 ; i++) /* may take up to 1 second... */ + if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP) + break; + + for (i = 0 ; i < 1000000 ; i++) /* must try at least 2.228 ms */ + if (!(CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP)) + break; + + do { /* Isn't this overkill ? UIP above should guarantee consistency */ + sec = CMOS_READ(RTC_SECONDS); + min = CMOS_READ(RTC_MINUTES); + hour = CMOS_READ(RTC_HOURS); + day = CMOS_READ(RTC_DAY_OF_MONTH); + mon = CMOS_READ(RTC_MONTH); + year = CMOS_READ(RTC_YEAR); + } while (sec != CMOS_READ(RTC_SECONDS)); + + if (!(CMOS_READ(RTC_CONTROL) & RTC_DM_BINARY) || RTC_ALWAYS_BCD) { + BCD_TO_BIN(sec); + BCD_TO_BIN(min); + BCD_TO_BIN(hour); + BCD_TO_BIN(day); + BCD_TO_BIN(mon); + BCD_TO_BIN(year); + } + if ((year += 1900) < 1970) + year += 100; + return mktime(year, mon, day, hour, min, sec); +} + +static int set_isa_cmos_time(void) +{ + int retval = 0; + int real_seconds, real_minutes, cmos_minutes; + unsigned char save_control, save_freq_select; + unsigned long nowtime = xtime.tv_sec; + + save_control = CMOS_READ(RTC_CONTROL); /* tell the clock it's being set */ + CMOS_WRITE((save_control|RTC_SET), RTC_CONTROL); + + save_freq_select = CMOS_READ(RTC_FREQ_SELECT); /* stop and reset prescaler */ + CMOS_WRITE((save_freq_select|RTC_DIV_RESET2), RTC_FREQ_SELECT); + + cmos_minutes = CMOS_READ(RTC_MINUTES); + if (!(save_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) + BCD_TO_BIN(cmos_minutes); + + /* + * since we're only adjusting minutes and seconds, + * don't interfere with hour overflow. This avoids + * messing with unknown time zones but requires your + * RTC not to be off by more than 15 minutes + */ + real_seconds = nowtime % 60; + real_minutes = nowtime / 60; + if (((abs(real_minutes - cmos_minutes) + 15)/30) & 1) + real_minutes += 30; /* correct for half hour time zone */ + real_minutes %= 60; + + if (abs(real_minutes - cmos_minutes) < 30) { + if (!(save_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) { + BIN_TO_BCD(real_seconds); + BIN_TO_BCD(real_minutes); + } + CMOS_WRITE(real_seconds,RTC_SECONDS); + CMOS_WRITE(real_minutes,RTC_MINUTES); + } else + retval = -1; + + /* The following flags have to be released exactly in this order, + * otherwise the DS12887 (popular MC146818A clone with integrated + * battery and quartz) will not reset the oscillator and will not + * update precisely 500 ms later. You won't find this mentioned in + * the Dallas Semiconductor data sheets, but who believes data + * sheets anyway ... -- Markus Kuhn + */ + CMOS_WRITE(save_control, RTC_CONTROL); + CMOS_WRITE(save_freq_select, RTC_FREQ_SELECT); + + return retval; +} + +void __init isa_rtc_init(void) +{ + if (machine_is_co285() || + machine_is_personal_server()) + /* + * Add-in 21285s shouldn't access the RTC + */ + rtc_base = 0; + else + rtc_base = 0x70; + + if (rtc_base) { + int reg_d, reg_b; + + /* + * Probe for the RTC. + */ + reg_d = CMOS_READ(RTC_REG_D); + + /* + * make sure the divider is set + */ + CMOS_WRITE(RTC_REF_CLCK_32KHZ, RTC_REG_A); + + /* + * Set control reg B + * (24 hour mode, update enabled) + */ + reg_b = CMOS_READ(RTC_REG_B) & 0x7f; + reg_b |= 2; + CMOS_WRITE(reg_b, RTC_REG_B); + + if ((CMOS_READ(RTC_REG_A) & 0x7f) == RTC_REF_CLCK_32KHZ && + CMOS_READ(RTC_REG_B) == reg_b) { + struct timespec tv; + + /* + * We have a RTC. Check the battery + */ + if ((reg_d & 0x80) == 0) + printk(KERN_WARNING "RTC: *** warning: CMOS battery bad\n"); + + tv.tv_nsec = 0; + tv.tv_sec = get_isa_cmos_time(); + do_settimeofday(&tv); + set_rtc = set_isa_cmos_time; + } else + rtc_base = 0; + } +} |