redonkable/alistair23-linux
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[PATCH] Char: sx, use eisa probing

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Instead of finding eisa directly, use eisa probing.

Cc: <R.E.Wolff@BitWizard.nl>
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jiri Slaby 2006-12-08 02:39:01 -08:00 committed by Linus Torvalds
parent cda5265e7c
commit 18f813ee69
1 changed files with 117 additions and 47 deletions
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164
drivers/char/sx.c
View file

@ -214,6 +214,7 @@
#include <linux/fcntl.h>
#include <linux/major.h>
#include <linux/delay.h>
#include <linux/eisa.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/init.h>
@ -2345,6 +2346,17 @@ static int sx_init_portstructs (int nboards, int nports)
return 0;
}
static unsigned int sx_find_free_board(void)
{
unsigned int i;
for (i = 0; i < SX_NBOARDS; i++)
if (!(boards[i].flags & SX_BOARD_PRESENT))
break;
return i;
}
static void __exit sx_release_drivers(void)
{
func_enter();
@ -2353,6 +2365,97 @@ static void __exit sx_release_drivers(void)
func_exit();
}
static void __devexit sx_remove_card(struct sx_board *board)
{
if (board->flags & SX_BOARD_INITIALIZED) {
/* The board should stop messing with us. (actually I mean the
interrupt) */
sx_reset(board);
if ((board->irq) && (board->flags & SX_IRQ_ALLOCATED))
free_irq(board->irq, board);
/* It is safe/allowed to del_timer a non-active timer */
del_timer(&board->timer);
iounmap(board->base);
board->flags &= ~(SX_BOARD_INITIALIZED|SX_BOARD_PRESENT);
}
}
#ifdef CONFIG_EISA
static int __devinit sx_eisa_probe(struct device *dev)
{
struct eisa_device *edev = to_eisa_device(dev);
struct sx_board *board;
unsigned long eisa_slot = edev->base_addr;
unsigned int i;
int retval = -EIO;
i = sx_find_free_board();
if (i == SX_NBOARDS)
goto err;
dev_info(dev, "XIO : Signature found in EISA slot %lu, "
"Product %d Rev %d (REPORT THIS TO LKLM)\n",
eisa_slot >> 12,
inb(eisa_slot + EISA_VENDOR_ID_OFFSET + 2),
inb(eisa_slot + EISA_VENDOR_ID_OFFSET + 3));
board = &boards[i];
board->eisa_base = eisa_slot;
board->flags &= ~SX_BOARD_TYPE;
board->flags |= SI_EISA_BOARD;
board->hw_base = ((inb(eisa_slot + 0xc01) << 8) +
inb(eisa_slot + 0xc00)) << 16;
board->base2 =
board->base = ioremap(board->hw_base, SI2_EISA_WINDOW_LEN);
sx_dprintk(SX_DEBUG_PROBE, "IO hw_base address: %lx\n", board->hw_base);
sx_dprintk(SX_DEBUG_PROBE, "base: %p\n", board->base);
board->irq = inb(eisa_slot + 0xc02) >> 4;
sx_dprintk(SX_DEBUG_PROBE, "IRQ: %d\n", board->irq);
if (!probe_si(board))
goto err_unmap;
dev_set_drvdata(dev, board);
return 0;
err_unmap:
iounmap(board->base);
err:
return retval;
}
static int __devexit sx_eisa_remove(struct device *dev)
{
struct sx_board *board = dev_get_drvdata(dev);
sx_remove_card(board);
return 0;
}
static struct eisa_device_id sx_eisa_tbl[] = {
{ "SLX" },
{ "" }
};
MODULE_DEVICE_TABLE(eisa, sx_eisa_tbl);
static struct eisa_driver sx_eisadriver = {
.id_table = sx_eisa_tbl,
.driver = {
.name = "sx",
.probe = sx_eisa_probe,
.remove = __devexit_p(sx_eisa_remove),
}
};
#endif
/********************************************************
* Setting bit 17 in the CNTRL register of the PLX 9050 *
* chip forces a retry on writes while a read is pending.*
@ -2391,9 +2494,7 @@ static int __devinit sx_pci_probe(struct pci_dev *pdev,
unsigned int i;
int retval = -EIO;
for (i = 0; i < SX_NBOARDS; i++)
if (!(boards[i].flags & SX_BOARD_PRESENT))
break;
i = sx_find_free_board();
if (i == SX_NBOARDS)
goto err;
@ -2449,19 +2550,7 @@ static void __devexit sx_pci_remove(struct pci_dev *pdev)
{
struct sx_board *board = pci_get_drvdata(pdev);
if (board->flags & SX_BOARD_INITIALIZED) {
/* The board should stop messing with us. (actually I mean the
interrupt) */
sx_reset(board);
if ((board->irq) && (board->flags & SX_IRQ_ALLOCATED))
free_irq(board->irq, board);
/* It is safe/allowed to del_timer a non-active timer */
del_timer(&board->timer);
iounmap(board->base);
board->flags &= ~(SX_BOARD_INITIALIZED|SX_BOARD_PRESENT);
}
sx_remove_card(board);
}
/* Specialix has a whole bunch of cards with 0x2000 as the device ID. They say
@ -2484,9 +2573,11 @@ static struct pci_driver sx_pcidriver = {
static int __init sx_init(void)
{
#ifdef CONFIG_EISA
int retval1;
#endif
int retval, i;
int found = 0;
int eisa_slot;
struct sx_board *board;
func_enter();
@ -2549,42 +2640,18 @@ static int __init sx_init(void)
iounmap (board->base);
}
}
sx_dprintk(SX_DEBUG_PROBE, "Probing for EISA cards\n");
for(eisa_slot=0x1000; eisa_slot<0x10000; eisa_slot+=0x1000)
{
if((inb(eisa_slot+0xc80)==0x4d) &&
(inb(eisa_slot+0xc81)==0x98))
{
sx_dprintk(SX_DEBUG_PROBE, "%s : Signature found in EISA slot %d, Product %d Rev %d\n",
"XIO", (eisa_slot>>12), inb(eisa_slot+0xc82), inb(eisa_slot+0xc83));
board = &boards[found];
board->eisa_base = eisa_slot;
board->flags &= ~SX_BOARD_TYPE;
board->flags |= SI_EISA_BOARD;
board->hw_base = (((inb(0xc01+eisa_slot) << 8) + inb(0xc00+eisa_slot)) << 16);
board->base2 =
board->base = ioremap(board->hw_base, SI2_EISA_WINDOW_LEN);
sx_dprintk(SX_DEBUG_PROBE, "IO hw_base address: %lx\n", board->hw_base);
sx_dprintk(SX_DEBUG_PROBE, "base: %p\n", board->base);
board->irq = inb(board->eisa_base+0xc02)>>4;
sx_dprintk(SX_DEBUG_PROBE, "IRQ: %d\n", board->irq);
probe_si(board);
found++;
}
}
#ifdef CONFIG_EISA
retval1 = eisa_driver_register(&sx_eisadriver);
#endif
retval = pci_register_driver(&sx_pcidriver);
if (found) {
printk (KERN_INFO "sx: total of %d boards detected.\n", found);
retval = 0;
} else if (retval) {
#ifdef CONFIG_EISA
if (retval1)
#endif
misc_deregister(&sx_fw_device);
}
@ -2599,6 +2666,9 @@ static void __exit sx_exit (void)
struct sx_board *board;
func_enter();
#ifdef CONFIG_EISA
eisa_driver_unregister(&sx_eisadriver);
#endif
pci_unregister_driver(&sx_pcidriver);
for (i = 0; i < SX_NBOARDS; i++) {
board = &boards[i];