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-rw-r--r--arch/arm/kernel/ecard.c1232
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diff --git a/arch/arm/kernel/ecard.c b/arch/arm/kernel/ecard.c
deleted file mode 100644
index 1651d49..0000000
--- a/arch/arm/kernel/ecard.c
+++ /dev/null
@@ -1,1232 +0,0 @@
-/*
- * linux/arch/arm/kernel/ecard.c
- *
- * Copyright 1995-2001 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.
- *
- * Find all installed expansion cards, and handle interrupts from them.
- *
- * Created from information from Acorns RiscOS3 PRMs
- *
- * 08-Dec-1996 RMK Added code for the 9'th expansion card - the ether
- * podule slot.
- * 06-May-1997 RMK Added blacklist for cards whose loader doesn't work.
- * 12-Sep-1997 RMK Created new handling of interrupt enables/disables
- * - cards can now register their own routine to control
- * interrupts (recommended).
- * 29-Sep-1997 RMK Expansion card interrupt hardware not being re-enabled
- * on reset from Linux. (Caused cards not to respond
- * under RiscOS without hard reset).
- * 15-Feb-1998 RMK Added DMA support
- * 12-Sep-1998 RMK Added EASI support
- * 10-Jan-1999 RMK Run loaders in a simulated RISC OS environment.
- * 17-Apr-1999 RMK Support for EASI Type C cycles.
- */
-#define ECARD_C
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/completion.h>
-#include <linux/reboot.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/device.h>
-#include <linux/init.h>
-#include <linux/mutex.h>
-#include <linux/kthread.h>
-#include <linux/io.h>
-
-#include <asm/dma.h>
-#include <asm/ecard.h>
-#include <mach/hardware.h>
-#include <asm/irq.h>
-#include <asm/mmu_context.h>
-#include <asm/mach/irq.h>
-#include <asm/tlbflush.h>
-
-#include "ecard.h"
-
-#ifndef CONFIG_ARCH_RPC
-#define HAVE_EXPMASK
-#endif
-
-struct ecard_request {
- void (*fn)(struct ecard_request *);
- ecard_t *ec;
- unsigned int address;
- unsigned int length;
- unsigned int use_loader;
- void *buffer;
- struct completion *complete;
-};
-
-struct expcard_blacklist {
- unsigned short manufacturer;
- unsigned short product;
- const char *type;
-};
-
-static ecard_t *cards;
-static ecard_t *slot_to_expcard[MAX_ECARDS];
-static unsigned int ectcr;
-#ifdef HAS_EXPMASK
-static unsigned int have_expmask;
-#endif
-
-/* List of descriptions of cards which don't have an extended
- * identification, or chunk directories containing a description.
- */
-static struct expcard_blacklist __initdata blacklist[] = {
- { MANU_ACORN, PROD_ACORN_ETHER1, "Acorn Ether1" }
-};
-
-asmlinkage extern int
-ecard_loader_reset(unsigned long base, loader_t loader);
-asmlinkage extern int
-ecard_loader_read(int off, unsigned long base, loader_t loader);
-
-static inline unsigned short ecard_getu16(unsigned char *v)
-{
- return v[0] | v[1] << 8;
-}
-
-static inline signed long ecard_gets24(unsigned char *v)
-{
- return v[0] | v[1] << 8 | v[2] << 16 | ((v[2] & 0x80) ? 0xff000000 : 0);
-}
-
-static inline ecard_t *slot_to_ecard(unsigned int slot)
-{
- return slot < MAX_ECARDS ? slot_to_expcard[slot] : NULL;
-}
-
-/* ===================== Expansion card daemon ======================== */
-/*
- * Since the loader programs on the expansion cards need to be run
- * in a specific environment, create a separate task with this
- * environment up, and pass requests to this task as and when we
- * need to.
- *
- * This should allow 99% of loaders to be called from Linux.
- *
- * From a security standpoint, we trust the card vendors. This
- * may be a misplaced trust.
- */
-static void ecard_task_reset(struct ecard_request *req)
-{
- struct expansion_card *ec = req->ec;
- struct resource *res;
-
- res = ec->slot_no == 8
- ? &ec->resource[ECARD_RES_MEMC]
- : ec->easi
- ? &ec->resource[ECARD_RES_EASI]
- : &ec->resource[ECARD_RES_IOCSYNC];
-
- ecard_loader_reset(res->start, ec->loader);
-}
-
-static void ecard_task_readbytes(struct ecard_request *req)
-{
- struct expansion_card *ec = req->ec;
- unsigned char *buf = req->buffer;
- unsigned int len = req->length;
- unsigned int off = req->address;
-
- if (ec->slot_no == 8) {
- void __iomem *base = (void __iomem *)
- ec->resource[ECARD_RES_MEMC].start;
-
- /*
- * The card maintains an index which increments the address
- * into a 4096-byte page on each access. We need to keep
- * track of the counter.
- */
- static unsigned int index;
- unsigned int page;
-
- page = (off >> 12) * 4;
- if (page > 256 * 4)
- return;
-
- off &= 4095;
-
- /*
- * If we are reading offset 0, or our current index is
- * greater than the offset, reset the hardware index counter.
- */
- if (off == 0 || index > off) {
- writeb(0, base);
- index = 0;
- }
-
- /*
- * Increment the hardware index counter until we get to the
- * required offset. The read bytes are discarded.
- */
- while (index < off) {
- readb(base + page);
- index += 1;
- }
-
- while (len--) {
- *buf++ = readb(base + page);
- index += 1;
- }
- } else {
- unsigned long base = (ec->easi
- ? &ec->resource[ECARD_RES_EASI]
- : &ec->resource[ECARD_RES_IOCSYNC])->start;
- void __iomem *pbase = (void __iomem *)base;
-
- if (!req->use_loader || !ec->loader) {
- off *= 4;
- while (len--) {
- *buf++ = readb(pbase + off);
- off += 4;
- }
- } else {
- while(len--) {
- /*
- * The following is required by some
- * expansion card loader programs.
- */
- *(unsigned long *)0x108 = 0;
- *buf++ = ecard_loader_read(off++, base,
- ec->loader);
- }
- }
- }
-
-}
-
-static DECLARE_WAIT_QUEUE_HEAD(ecard_wait);
-static struct ecard_request *ecard_req;
-static DEFINE_MUTEX(ecard_mutex);
-
-/*
- * Set up the expansion card daemon's page tables.
- */
-static void ecard_init_pgtables(struct mm_struct *mm)
-{
- struct vm_area_struct vma;
-
- /* We want to set up the page tables for the following mapping:
- * Virtual Physical
- * 0x03000000 0x03000000
- * 0x03010000 unmapped
- * 0x03210000 0x03210000
- * 0x03400000 unmapped
- * 0x08000000 0x08000000
- * 0x10000000 unmapped
- *
- * FIXME: we don't follow this 100% yet.
- */
- pgd_t *src_pgd, *dst_pgd;
-
- src_pgd = pgd_offset(mm, (unsigned long)IO_BASE);
- dst_pgd = pgd_offset(mm, IO_START);
-
- memcpy(dst_pgd, src_pgd, sizeof(pgd_t) * (IO_SIZE / PGDIR_SIZE));
-
- src_pgd = pgd_offset(mm, (unsigned long)EASI_BASE);
- dst_pgd = pgd_offset(mm, EASI_START);
-
- memcpy(dst_pgd, src_pgd, sizeof(pgd_t) * (EASI_SIZE / PGDIR_SIZE));
-
- vma.vm_flags = VM_EXEC;
- vma.vm_mm = mm;
-
- flush_tlb_range(&vma, IO_START, IO_START + IO_SIZE);
- flush_tlb_range(&vma, EASI_START, EASI_START + EASI_SIZE);
-}
-
-static int ecard_init_mm(void)
-{
- struct mm_struct * mm = mm_alloc();
- struct mm_struct *active_mm = current->active_mm;
-
- if (!mm)
- return -ENOMEM;
-
- current->mm = mm;
- current->active_mm = mm;
- activate_mm(active_mm, mm);
- mmdrop(active_mm);
- ecard_init_pgtables(mm);
- return 0;
-}
-
-static int
-ecard_task(void * unused)
-{
- /*
- * Allocate a mm. We're not a lazy-TLB kernel task since we need
- * to set page table entries where the user space would be. Note
- * that this also creates the page tables. Failure is not an
- * option here.
- */
- if (ecard_init_mm())
- panic("kecardd: unable to alloc mm\n");
-
- while (1) {
- struct ecard_request *req;
-
- wait_event_interruptible(ecard_wait, ecard_req != NULL);
-
- req = xchg(&ecard_req, NULL);
- if (req != NULL) {
- req->fn(req);
- complete(req->complete);
- }
- }
-}
-
-/*
- * Wake the expansion card daemon to action our request.
- *
- * FIXME: The test here is not sufficient to detect if the
- * kcardd is running.
- */
-static void ecard_call(struct ecard_request *req)
-{
- DECLARE_COMPLETION_ONSTACK(completion);
-
- req->complete = &completion;
-
- mutex_lock(&ecard_mutex);
- ecard_req = req;
- wake_up(&ecard_wait);
-
- /*
- * Now wait for kecardd to run.
- */
- wait_for_completion(&completion);
- mutex_unlock(&ecard_mutex);
-}
-
-/* ======================= Mid-level card control ===================== */
-
-static void
-ecard_readbytes(void *addr, ecard_t *ec, int off, int len, int useld)
-{
- struct ecard_request req;
-
- req.fn = ecard_task_readbytes;
- req.ec = ec;
- req.address = off;
- req.length = len;
- req.use_loader = useld;
- req.buffer = addr;
-
- ecard_call(&req);
-}
-
-int ecard_readchunk(struct in_chunk_dir *cd, ecard_t *ec, int id, int num)
-{
- struct ex_chunk_dir excd;
- int index = 16;
- int useld = 0;
-
- if (!ec->cid.cd)
- return 0;
-
- while(1) {
- ecard_readbytes(&excd, ec, index, 8, useld);
- index += 8;
- if (c_id(&excd) == 0) {
- if (!useld && ec->loader) {
- useld = 1;
- index = 0;
- continue;
- }
- return 0;
- }
- if (c_id(&excd) == 0xf0) { /* link */
- index = c_start(&excd);
- continue;
- }
- if (c_id(&excd) == 0x80) { /* loader */
- if (!ec->loader) {
- ec->loader = kmalloc(c_len(&excd),
- GFP_KERNEL);
- if (ec->loader)
- ecard_readbytes(ec->loader, ec,
- (int)c_start(&excd),
- c_len(&excd), useld);
- else
- return 0;
- }
- continue;
- }
- if (c_id(&excd) == id && num-- == 0)
- break;
- }
-
- if (c_id(&excd) & 0x80) {
- switch (c_id(&excd) & 0x70) {
- case 0x70:
- ecard_readbytes((unsigned char *)excd.d.string, ec,
- (int)c_start(&excd), c_len(&excd),
- useld);
- break;
- case 0x00:
- break;
- }
- }
- cd->start_offset = c_start(&excd);
- memcpy(cd->d.string, excd.d.string, 256);
- return 1;
-}
-
-/* ======================= Interrupt control ============================ */
-
-static void ecard_def_irq_enable(ecard_t *ec, int irqnr)
-{
-#ifdef HAS_EXPMASK
- if (irqnr < 4 && have_expmask) {
- have_expmask |= 1 << irqnr;
- __raw_writeb(have_expmask, EXPMASK_ENABLE);
- }
-#endif
-}
-
-static void ecard_def_irq_disable(ecard_t *ec, int irqnr)
-{
-#ifdef HAS_EXPMASK
- if (irqnr < 4 && have_expmask) {
- have_expmask &= ~(1 << irqnr);
- __raw_writeb(have_expmask, EXPMASK_ENABLE);
- }
-#endif
-}
-
-static int ecard_def_irq_pending(ecard_t *ec)
-{
- return !ec->irqmask || readb(ec->irqaddr) & ec->irqmask;
-}
-
-static void ecard_def_fiq_enable(ecard_t *ec, int fiqnr)
-{
- panic("ecard_def_fiq_enable called - impossible");
-}
-
-static void ecard_def_fiq_disable(ecard_t *ec, int fiqnr)
-{
- panic("ecard_def_fiq_disable called - impossible");
-}
-
-static int ecard_def_fiq_pending(ecard_t *ec)
-{
- return !ec->fiqmask || readb(ec->fiqaddr) & ec->fiqmask;
-}
-
-static expansioncard_ops_t ecard_default_ops = {
- ecard_def_irq_enable,
- ecard_def_irq_disable,
- ecard_def_irq_pending,
- ecard_def_fiq_enable,
- ecard_def_fiq_disable,
- ecard_def_fiq_pending
-};
-
-/*
- * Enable and disable interrupts from expansion cards.
- * (interrupts are disabled for these functions).
- *
- * They are not meant to be called directly, but via enable/disable_irq.
- */
-static void ecard_irq_unmask(struct irq_data *d)
-{
- ecard_t *ec = slot_to_ecard(d->irq - 32);
-
- if (ec) {
- if (!ec->ops)
- ec->ops = &ecard_default_ops;
-
- if (ec->claimed && ec->ops->irqenable)
- ec->ops->irqenable(ec, d->irq);
- else
- printk(KERN_ERR "ecard: rejecting request to "
- "enable IRQs for %d\n", d->irq);
- }
-}
-
-static void ecard_irq_mask(struct irq_data *d)
-{
- ecard_t *ec = slot_to_ecard(d->irq - 32);
-
- if (ec) {
- if (!ec->ops)
- ec->ops = &ecard_default_ops;
-
- if (ec->ops && ec->ops->irqdisable)
- ec->ops->irqdisable(ec, d->irq);
- }
-}
-
-static struct irq_chip ecard_chip = {
- .name = "ECARD",
- .irq_ack = ecard_irq_mask,
- .irq_mask = ecard_irq_mask,
- .irq_unmask = ecard_irq_unmask,
-};
-
-void ecard_enablefiq(unsigned int fiqnr)
-{
- ecard_t *ec = slot_to_ecard(fiqnr);
-
- if (ec) {
- if (!ec->ops)
- ec->ops = &ecard_default_ops;
-
- if (ec->claimed && ec->ops->fiqenable)
- ec->ops->fiqenable(ec, fiqnr);
- else
- printk(KERN_ERR "ecard: rejecting request to "
- "enable FIQs for %d\n", fiqnr);
- }
-}
-
-void ecard_disablefiq(unsigned int fiqnr)
-{
- ecard_t *ec = slot_to_ecard(fiqnr);
-
- if (ec) {
- if (!ec->ops)
- ec->ops = &ecard_default_ops;
-
- if (ec->ops->fiqdisable)
- ec->ops->fiqdisable(ec, fiqnr);
- }
-}
-
-static void ecard_dump_irq_state(void)
-{
- ecard_t *ec;
-
- printk("Expansion card IRQ state:\n");
-
- for (ec = cards; ec; ec = ec->next) {
- if (ec->slot_no == 8)
- continue;
-
- printk(" %d: %sclaimed, ",
- ec->slot_no, ec->claimed ? "" : "not ");
-
- if (ec->ops && ec->ops->irqpending &&
- ec->ops != &ecard_default_ops)
- printk("irq %spending\n",
- ec->ops->irqpending(ec) ? "" : "not ");
- else
- printk("irqaddr %p, mask = %02X, status = %02X\n",
- ec->irqaddr, ec->irqmask, readb(ec->irqaddr));
- }
-}
-
-static void ecard_check_lockup(struct irq_desc *desc)
-{
- static unsigned long last;
- static int lockup;
-
- /*
- * If the timer interrupt has not run since the last million
- * unrecognised expansion card interrupts, then there is
- * something seriously wrong. Disable the expansion card
- * interrupts so at least we can continue.
- *
- * Maybe we ought to start a timer to re-enable them some time
- * later?
- */
- if (last == jiffies) {
- lockup += 1;
- if (lockup > 1000000) {
- printk(KERN_ERR "\nInterrupt lockup detected - "
- "disabling all expansion card interrupts\n");
-
- desc->irq_data.chip->irq_mask(&desc->irq_data);
- ecard_dump_irq_state();
- }
- } else
- lockup = 0;
-
- /*
- * If we did not recognise the source of this interrupt,
- * warn the user, but don't flood the user with these messages.
- */
- if (!last || time_after(jiffies, last + 5*HZ)) {
- last = jiffies;
- printk(KERN_WARNING "Unrecognised interrupt from backplane\n");
- ecard_dump_irq_state();
- }
-}
-
-static void
-ecard_irq_handler(unsigned int irq, struct irq_desc *desc)
-{
- ecard_t *ec;
- int called = 0;
-
- desc->irq_data.chip->irq_mask(&desc->irq_data);
- for (ec = cards; ec; ec = ec->next) {
- int pending;
-
- if (!ec->claimed || ec->irq == NO_IRQ || ec->slot_no == 8)
- continue;
-
- if (ec->ops && ec->ops->irqpending)
- pending = ec->ops->irqpending(ec);
- else
- pending = ecard_default_ops.irqpending(ec);
-
- if (pending) {
- generic_handle_irq(ec->irq);
- called ++;
- }
- }
- desc->irq_data.chip->irq_unmask(&desc->irq_data);
-
- if (called == 0)
- ecard_check_lockup(desc);
-}
-
-#ifdef HAS_EXPMASK
-static unsigned char priority_masks[] =
-{
- 0xf0, 0xf1, 0xf3, 0xf7, 0xff, 0xff, 0xff, 0xff
-};
-
-static unsigned char first_set[] =
-{
- 0x00, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00,
- 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00
-};
-
-static void
-ecard_irqexp_handler(unsigned int irq, struct irq_desc *desc)
-{
- const unsigned int statusmask = 15;
- unsigned int status;
-
- status = __raw_readb(EXPMASK_STATUS) & statusmask;
- if (status) {
- unsigned int slot = first_set[status];
- ecard_t *ec = slot_to_ecard(slot);
-
- if (ec->claimed) {
- /*
- * this ugly code is so that we can operate a
- * prioritorising system:
- *
- * Card 0 highest priority
- * Card 1
- * Card 2
- * Card 3 lowest priority
- *
- * Serial cards should go in 0/1, ethernet/scsi in 2/3
- * otherwise you will lose serial data at high speeds!
- */
- generic_handle_irq(ec->irq);
- } else {
- printk(KERN_WARNING "card%d: interrupt from unclaimed "
- "card???\n", slot);
- have_expmask &= ~(1 << slot);
- __raw_writeb(have_expmask, EXPMASK_ENABLE);
- }
- } else
- printk(KERN_WARNING "Wild interrupt from backplane (masks)\n");
-}
-
-static int __init ecard_probeirqhw(void)
-{
- ecard_t *ec;
- int found;
-
- __raw_writeb(0x00, EXPMASK_ENABLE);
- __raw_writeb(0xff, EXPMASK_STATUS);
- found = (__raw_readb(EXPMASK_STATUS) & 15) == 0;
- __raw_writeb(0xff, EXPMASK_ENABLE);
-
- if (found) {
- printk(KERN_DEBUG "Expansion card interrupt "
- "management hardware found\n");
-
- /* for each card present, set a bit to '1' */
- have_expmask = 0x80000000;
-
- for (ec = cards; ec; ec = ec->next)
- have_expmask |= 1 << ec->slot_no;
-
- __raw_writeb(have_expmask, EXPMASK_ENABLE);
- }
-
- return found;
-}
-#else
-#define ecard_irqexp_handler NULL
-#define ecard_probeirqhw() (0)
-#endif
-
-static void __iomem *__ecard_address(ecard_t *ec, card_type_t type, card_speed_t speed)
-{
- void __iomem *address = NULL;
- int slot = ec->slot_no;
-
- if (ec->slot_no == 8)
- return ECARD_MEMC8_BASE;
-
- ectcr &= ~(1 << slot);
-
- switch (type) {
- case ECARD_MEMC:
- if (slot < 4)
- address = ECARD_MEMC_BASE + (slot << 14);
- break;
-
- case ECARD_IOC:
- if (slot < 4)
- address = ECARD_IOC_BASE + (slot << 14);
- else
- address = ECARD_IOC4_BASE + ((slot - 4) << 14);
- if (address)
- address += speed << 19;
- break;
-
- case ECARD_EASI:
- address = ECARD_EASI_BASE + (slot << 24);
- if (speed == ECARD_FAST)
- ectcr |= 1 << slot;
- break;
-
- default:
- break;
- }
-
-#ifdef IOMD_ECTCR
- iomd_writeb(ectcr, IOMD_ECTCR);
-#endif
- return address;
-}
-
-static int ecard_prints(struct seq_file *m, ecard_t *ec)
-{
- seq_printf(m, " %d: %s ", ec->slot_no, ec->easi ? "EASI" : " ");
-
- if (ec->cid.id == 0) {
- struct in_chunk_dir incd;
-
- seq_printf(m, "[%04X:%04X] ",
- ec->cid.manufacturer, ec->cid.product);
-
- if (!ec->card_desc && ec->cid.cd &&
- ecard_readchunk(&incd, ec, 0xf5, 0)) {
- ec->card_desc = kmalloc(strlen(incd.d.string)+1, GFP_KERNEL);
-
- if (ec->card_desc)
- strcpy((char *)ec->card_desc, incd.d.string);
- }
-
- seq_printf(m, "%s\n", ec->card_desc ? ec->card_desc : "*unknown*");
- } else
- seq_printf(m, "Simple card %d\n", ec->cid.id);
-
- return 0;
-}
-
-static int ecard_devices_proc_show(struct seq_file *m, void *v)
-{
- ecard_t *ec = cards;
-
- while (ec) {
- ecard_prints(m, ec);
- ec = ec->next;
- }
- return 0;
-}
-
-static int ecard_devices_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, ecard_devices_proc_show, NULL);
-}
-
-static const struct file_operations bus_ecard_proc_fops = {
- .owner = THIS_MODULE,
- .open = ecard_devices_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static struct proc_dir_entry *proc_bus_ecard_dir = NULL;
-
-static void ecard_proc_init(void)
-{
- proc_bus_ecard_dir = proc_mkdir("bus/ecard", NULL);
- proc_create("devices", 0, proc_bus_ecard_dir, &bus_ecard_proc_fops);
-}
-
-#define ec_set_resource(ec,nr,st,sz) \
- do { \
- (ec)->resource[nr].name = dev_name(&ec->dev); \
- (ec)->resource[nr].start = st; \
- (ec)->resource[nr].end = (st) + (sz) - 1; \
- (ec)->resource[nr].flags = IORESOURCE_MEM; \
- } while (0)
-
-static void __init ecard_free_card(struct expansion_card *ec)
-{
- int i;
-
- for (i = 0; i < ECARD_NUM_RESOURCES; i++)
- if (ec->resource[i].flags)
- release_resource(&ec->resource[i]);
-
- kfree(ec);
-}
-
-static struct expansion_card *__init ecard_alloc_card(int type, int slot)
-{
- struct expansion_card *ec;
- unsigned long base;
- int i;
-
- ec = kzalloc(sizeof(ecard_t), GFP_KERNEL);
- if (!ec) {
- ec = ERR_PTR(-ENOMEM);
- goto nomem;
- }
-
- ec->slot_no = slot;
- ec->easi = type == ECARD_EASI;
- ec->irq = NO_IRQ;
- ec->fiq = NO_IRQ;
- ec->dma = NO_DMA;
- ec->ops = &ecard_default_ops;
-
- dev_set_name(&ec->dev, "ecard%d", slot);
- ec->dev.parent = NULL;
- ec->dev.bus = &ecard_bus_type;
- ec->dev.dma_mask = &ec->dma_mask;
- ec->dma_mask = (u64)0xffffffff;
- ec->dev.coherent_dma_mask = ec->dma_mask;
-
- if (slot < 4) {
- ec_set_resource(ec, ECARD_RES_MEMC,
- PODSLOT_MEMC_BASE + (slot << 14),
- PODSLOT_MEMC_SIZE);
- base = PODSLOT_IOC0_BASE + (slot << 14);
- } else
- base = PODSLOT_IOC4_BASE + ((slot - 4) << 14);
-
-#ifdef CONFIG_ARCH_RPC
- if (slot < 8) {
- ec_set_resource(ec, ECARD_RES_EASI,
- PODSLOT_EASI_BASE + (slot << 24),
- PODSLOT_EASI_SIZE);
- }
-
- if (slot == 8) {
- ec_set_resource(ec, ECARD_RES_MEMC, NETSLOT_BASE, NETSLOT_SIZE);
- } else
-#endif
-
- for (i = 0; i <= ECARD_RES_IOCSYNC - ECARD_RES_IOCSLOW; i++)
- ec_set_resource(ec, i + ECARD_RES_IOCSLOW,
- base + (i << 19), PODSLOT_IOC_SIZE);
-
- for (i = 0; i < ECARD_NUM_RESOURCES; i++) {
- if (ec->resource[i].flags &&
- request_resource(&iomem_resource, &ec->resource[i])) {
- dev_err(&ec->dev, "resource(s) not available\n");
- ec->resource[i].end -= ec->resource[i].start;
- ec->resource[i].start = 0;
- ec->resource[i].flags = 0;
- }
- }
-
- nomem:
- return ec;
-}
-
-static ssize_t ecard_show_irq(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct expansion_card *ec = ECARD_DEV(dev);
- return sprintf(buf, "%u\n", ec->irq);
-}
-
-static ssize_t ecard_show_dma(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct expansion_card *ec = ECARD_DEV(dev);
- return sprintf(buf, "%u\n", ec->dma);
-}
-
-static ssize_t ecard_show_resources(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct expansion_card *ec = ECARD_DEV(dev);
- char *str = buf;
- int i;
-
- for (i = 0; i < ECARD_NUM_RESOURCES; i++)
- str += sprintf(str, "%08x %08x %08lx\n",
- ec->resource[i].start,
- ec->resource[i].end,
- ec->resource[i].flags);
-
- return str - buf;
-}
-
-static ssize_t ecard_show_vendor(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct expansion_card *ec = ECARD_DEV(dev);
- return sprintf(buf, "%u\n", ec->cid.manufacturer);
-}
-
-static ssize_t ecard_show_device(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct expansion_card *ec = ECARD_DEV(dev);
- return sprintf(buf, "%u\n", ec->cid.product);
-}
-
-static ssize_t ecard_show_type(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct expansion_card *ec = ECARD_DEV(dev);
- return sprintf(buf, "%s\n", ec->easi ? "EASI" : "IOC");
-}
-
-static struct device_attribute ecard_dev_attrs[] = {
- __ATTR(device, S_IRUGO, ecard_show_device, NULL),
- __ATTR(dma, S_IRUGO, ecard_show_dma, NULL),
- __ATTR(irq, S_IRUGO, ecard_show_irq, NULL),
- __ATTR(resource, S_IRUGO, ecard_show_resources, NULL),
- __ATTR(type, S_IRUGO, ecard_show_type, NULL),
- __ATTR(vendor, S_IRUGO, ecard_show_vendor, NULL),
- __ATTR_NULL,
-};
-
-
-int ecard_request_resources(struct expansion_card *ec)
-{
- int i, err = 0;
-
- for (i = 0; i < ECARD_NUM_RESOURCES; i++) {
- if (ecard_resource_end(ec, i) &&
- !request_mem_region(ecard_resource_start(ec, i),
- ecard_resource_len(ec, i),
- ec->dev.driver->name)) {
- err = -EBUSY;
- break;
- }
- }
-
- if (err) {
- while (i--)
- if (ecard_resource_end(ec, i))
- release_mem_region(ecard_resource_start(ec, i),
- ecard_resource_len(ec, i));
- }
- return err;
-}
-EXPORT_SYMBOL(ecard_request_resources);
-
-void ecard_release_resources(struct expansion_card *ec)
-{
- int i;
-
- for (i = 0; i < ECARD_NUM_RESOURCES; i++)
- if (ecard_resource_end(ec, i))
- release_mem_region(ecard_resource_start(ec, i),
- ecard_resource_len(ec, i));
-}
-EXPORT_SYMBOL(ecard_release_resources);
-
-void ecard_setirq(struct expansion_card *ec, const struct expansion_card_ops *ops, void *irq_data)
-{
- ec->irq_data = irq_data;
- barrier();
- ec->ops = ops;
-}
-EXPORT_SYMBOL(ecard_setirq);
-
-void __iomem *ecardm_iomap(struct expansion_card *ec, unsigned int res,
- unsigned long offset, unsigned long maxsize)
-{
- unsigned long start = ecard_resource_start(ec, res);
- unsigned long end = ecard_resource_end(ec, res);
-
- if (offset > (end - start))
- return NULL;
-
- start += offset;
- if (maxsize && end - start > maxsize)
- end = start + maxsize;
-
- return devm_ioremap(&ec->dev, start, end - start);
-}
-EXPORT_SYMBOL(ecardm_iomap);
-
-/*
- * Probe for an expansion card.
- *
- * If bit 1 of the first byte of the card is set, then the
- * card does not exist.
- */
-static int __init
-ecard_probe(int slot, card_type_t type)
-{
- ecard_t **ecp;
- ecard_t *ec;
- struct ex_ecid cid;
- void __iomem *addr;
- int i, rc;
-
- ec = ecard_alloc_card(type, slot);
- if (IS_ERR(ec)) {
- rc = PTR_ERR(ec);
- goto nomem;
- }
-
- rc = -ENODEV;
- if ((addr = __ecard_address(ec, type, ECARD_SYNC)) == NULL)
- goto nodev;
-
- cid.r_zero = 1;
- ecard_readbytes(&cid, ec, 0, 16, 0);
- if (cid.r_zero)
- goto nodev;
-
- ec->cid.id = cid.r_id;
- ec->cid.cd = cid.r_cd;
- ec->cid.is = cid.r_is;
- ec->cid.w = cid.r_w;
- ec->cid.manufacturer = ecard_getu16(cid.r_manu);
- ec->cid.product = ecard_getu16(cid.r_prod);
- ec->cid.country = cid.r_country;
- ec->cid.irqmask = cid.r_irqmask;
- ec->cid.irqoff = ecard_gets24(cid.r_irqoff);
- ec->cid.fiqmask = cid.r_fiqmask;
- ec->cid.fiqoff = ecard_gets24(cid.r_fiqoff);
- ec->fiqaddr =
- ec->irqaddr = addr;
-
- if (ec->cid.is) {
- ec->irqmask = ec->cid.irqmask;
- ec->irqaddr += ec->cid.irqoff;
- ec->fiqmask = ec->cid.fiqmask;
- ec->fiqaddr += ec->cid.fiqoff;
- } else {
- ec->irqmask = 1;
- ec->fiqmask = 4;
- }
-
- for (i = 0; i < ARRAY_SIZE(blacklist); i++)
- if (blacklist[i].manufacturer == ec->cid.manufacturer &&
- blacklist[i].product == ec->cid.product) {
- ec->card_desc = blacklist[i].type;
- break;
- }
-
- /*
- * hook the interrupt handlers
- */
- if (slot < 8) {
- ec->irq = 32 + slot;
- irq_set_chip_and_handler(ec->irq, &ecard_chip,
- handle_level_irq);
- set_irq_flags(ec->irq, IRQF_VALID);
- }
-
- if (slot == 8)
- ec->irq = 11;
-#ifdef CONFIG_ARCH_RPC
- /* On RiscPC, only first two slots have DMA capability */
- if (slot < 2)
- ec->dma = 2 + slot;
-#endif
-
- for (ecp = &cards; *ecp; ecp = &(*ecp)->next);
-
- *ecp = ec;
- slot_to_expcard[slot] = ec;
-
- device_register(&ec->dev);
-
- return 0;
-
- nodev:
- ecard_free_card(ec);
- nomem:
- return rc;
-}
-
-/*
- * Initialise the expansion card system.
- * Locate all hardware - interrupt management and
- * actual cards.
- */
-static int __init ecard_init(void)
-{
- struct task_struct *task;
- int slot, irqhw;
-
- task = kthread_run(ecard_task, NULL, "kecardd");
- if (IS_ERR(task)) {
- printk(KERN_ERR "Ecard: unable to create kernel thread: %ld\n",
- PTR_ERR(task));
- return PTR_ERR(task);
- }
-
- printk("Probing expansion cards\n");
-
- for (slot = 0; slot < 8; slot ++) {
- if (ecard_probe(slot, ECARD_EASI) == -ENODEV)
- ecard_probe(slot, ECARD_IOC);
- }
-
- ecard_probe(8, ECARD_IOC);
-
- irqhw = ecard_probeirqhw();
-
- irq_set_chained_handler(IRQ_EXPANSIONCARD,
- irqhw ? ecard_irqexp_handler : ecard_irq_handler);
-
- ecard_proc_init();
-
- return 0;
-}
-
-subsys_initcall(ecard_init);
-
-/*
- * ECARD "bus"
- */
-static const struct ecard_id *
-ecard_match_device(const struct ecard_id *ids, struct expansion_card *ec)
-{
- int i;
-
- for (i = 0; ids[i].manufacturer != 65535; i++)
- if (ec->cid.manufacturer == ids[i].manufacturer &&
- ec->cid.product == ids[i].product)
- return ids + i;
-
- return NULL;
-}
-
-static int ecard_drv_probe(struct device *dev)
-{
- struct expansion_card *ec = ECARD_DEV(dev);
- struct ecard_driver *drv = ECARD_DRV(dev->driver);
- const struct ecard_id *id;
- int ret;
-
- id = ecard_match_device(drv->id_table, ec);
-
- ec->claimed = 1;
- ret = drv->probe(ec, id);
- if (ret)
- ec->claimed = 0;
- return ret;
-}
-
-static int ecard_drv_remove(struct device *dev)
-{
- struct expansion_card *ec = ECARD_DEV(dev);
- struct ecard_driver *drv = ECARD_DRV(dev->driver);
-
- drv->remove(ec);
- ec->claimed = 0;
-
- /*
- * Restore the default operations. We ensure that the
- * ops are set before we change the data.
- */
- ec->ops = &ecard_default_ops;
- barrier();
- ec->irq_data = NULL;
-
- return 0;
-}
-
-/*
- * Before rebooting, we must make sure that the expansion card is in a
- * sensible state, so it can be re-detected. This means that the first
- * page of the ROM must be visible. We call the expansion cards reset
- * handler, if any.
- */
-static void ecard_drv_shutdown(struct device *dev)
-{
- struct expansion_card *ec = ECARD_DEV(dev);
- struct ecard_driver *drv = ECARD_DRV(dev->driver);
- struct ecard_request req;
-
- if (dev->driver) {
- if (drv->shutdown)
- drv->shutdown(ec);
- ec->claimed = 0;
- }
-
- /*
- * If this card has a loader, call the reset handler.
- */
- if (ec->loader) {
- req.fn = ecard_task_reset;
- req.ec = ec;
- ecard_call(&req);
- }
-}
-
-int ecard_register_driver(struct ecard_driver *drv)
-{
- drv->drv.bus = &ecard_bus_type;
-
- return driver_register(&drv->drv);
-}
-
-void ecard_remove_driver(struct ecard_driver *drv)
-{
- driver_unregister(&drv->drv);
-}
-
-static int ecard_match(struct device *_dev, struct device_driver *_drv)
-{
- struct expansion_card *ec = ECARD_DEV(_dev);
- struct ecard_driver *drv = ECARD_DRV(_drv);
- int ret;
-
- if (drv->id_table) {
- ret = ecard_match_device(drv->id_table, ec) != NULL;
- } else {
- ret = ec->cid.id == drv->id;
- }
-
- return ret;
-}
-
-struct bus_type ecard_bus_type = {
- .name = "ecard",
- .dev_attrs = ecard_dev_attrs,
- .match = ecard_match,
- .probe = ecard_drv_probe,
- .remove = ecard_drv_remove,
- .shutdown = ecard_drv_shutdown,
-};
-
-static int ecard_bus_init(void)
-{
- return bus_register(&ecard_bus_type);
-}
-
-postcore_initcall(ecard_bus_init);
-
-EXPORT_SYMBOL(ecard_readchunk);
-EXPORT_SYMBOL(ecard_register_driver);
-EXPORT_SYMBOL(ecard_remove_driver);
-EXPORT_SYMBOL(ecard_bus_type);