2 * linux/drivers/ide/setup-pci.c Version 1.10 2002/08/19
4 * Copyright (c) 1998-2000 Andre Hedrick <andre@linux-ide.org>
6 * Copyright (c) 1995-1998 Mark Lord
7 * May be copied or modified under the terms of the GNU General Public License
11 * This module provides support for automatic detection and
12 * configuration of all PCI IDE interfaces present in a system.
15 #include <linux/module.h>
16 #include <linux/types.h>
17 #include <linux/kernel.h>
18 #include <linux/pci.h>
19 #include <linux/init.h>
20 #include <linux/timer.h>
22 #include <linux/interrupt.h>
23 #include <linux/ide.h>
24 #include <linux/dma-mapping.h>
31 * ide_match_hwif - match a PCI IDE against an ide_hwif
32 * @io_base: I/O base of device
33 * @bootable: set if its bootable
34 * @name: name of device
36 * Match a PCI IDE port against an entry in ide_hwifs[],
37 * based on io_base port if possible. Return the matching hwif,
38 * or a new hwif. If we find an error (clashing, out of devices, etc)
41 * FIXME: we need to handle mmio matches here too
44 static ide_hwif_t
*ide_match_hwif(unsigned long io_base
, u8 bootable
, const char *name
)
50 * Look for a hwif with matching io_base specified using
51 * parameters to ide_setup().
53 for (h
= 0; h
< MAX_HWIFS
; ++h
) {
55 if (hwif
->io_ports
[IDE_DATA_OFFSET
] == io_base
) {
56 if (hwif
->chipset
== ide_forced
)
57 return hwif
; /* a perfect match */
61 * Look for a hwif with matching io_base default value.
62 * If chipset is "ide_unknown", then claim that hwif slot.
63 * Otherwise, some other chipset has already claimed it.. :(
65 for (h
= 0; h
< MAX_HWIFS
; ++h
) {
67 if (hwif
->io_ports
[IDE_DATA_OFFSET
] == io_base
) {
68 if (hwif
->chipset
== ide_unknown
)
69 return hwif
; /* match */
70 printk(KERN_ERR
"%s: port 0x%04lx already claimed by %s\n",
71 name
, io_base
, hwif
->name
);
72 return NULL
; /* already claimed */
76 * Okay, there is no hwif matching our io_base,
77 * so we'll just claim an unassigned slot.
78 * Give preference to claiming other slots before claiming ide0/ide1,
79 * just in case there's another interface yet-to-be-scanned
80 * which uses ports 1f0/170 (the ide0/ide1 defaults).
82 * Unless there is a bootable card that does not use the standard
83 * ports 1f0/170 (the ide0/ide1 defaults). The (bootable) flag.
86 for (h
= 0; h
< MAX_HWIFS
; ++h
) {
88 if (hwif
->chipset
== ide_unknown
)
89 return hwif
; /* pick an unused entry */
92 for (h
= 2; h
< MAX_HWIFS
; ++h
) {
94 if (hwif
->chipset
== ide_unknown
)
95 return hwif
; /* pick an unused entry */
98 for (h
= 0; h
< 2 && h
< MAX_HWIFS
; ++h
) {
100 if (hwif
->chipset
== ide_unknown
)
101 return hwif
; /* pick an unused entry */
103 printk(KERN_ERR
"%s: too many IDE interfaces, no room in table\n", name
);
108 * ide_setup_pci_baseregs - place a PCI IDE controller native
109 * @dev: PCI device of interface to switch native
110 * @name: Name of interface
112 * We attempt to place the PCI interface into PCI native mode. If
113 * we succeed the BARs are ok and the controller is in PCI mode.
114 * Returns 0 on success or an errno code.
116 * FIXME: if we program the interface and then fail to set the BARS
117 * we don't switch it back to legacy mode. Do we actually care ??
120 static int ide_setup_pci_baseregs (struct pci_dev
*dev
, const char *name
)
125 * Place both IDE interfaces into PCI "native" mode:
127 if (pci_read_config_byte(dev
, PCI_CLASS_PROG
, &progif
) ||
129 if ((progif
& 0xa) != 0xa) {
130 printk(KERN_INFO
"%s: device not capable of full "
131 "native PCI mode\n", name
);
134 printk("%s: placing both ports into native PCI mode\n", name
);
135 (void) pci_write_config_byte(dev
, PCI_CLASS_PROG
, progif
|5);
136 if (pci_read_config_byte(dev
, PCI_CLASS_PROG
, &progif
) ||
138 printk(KERN_ERR
"%s: rewrite of PROGIF failed, wanted "
139 "0x%04x, got 0x%04x\n",
140 name
, progif
|5, progif
);
147 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
149 * ide_get_or_set_dma_base - setup BMIBA
150 * @d: IDE pci device data
153 * Fetch the DMA Bus-Master-I/O-Base-Address (BMIBA) from PCI space.
154 * Where a device has a partner that is already in DMA mode we check
155 * and enforce IDE simplex rules.
158 static unsigned long ide_get_or_set_dma_base(ide_pci_device_t
*d
, ide_hwif_t
*hwif
)
160 unsigned long dma_base
= 0;
161 struct pci_dev
*dev
= hwif
->pci_dev
;
164 return hwif
->dma_base
;
166 if (hwif
->mate
&& hwif
->mate
->dma_base
) {
167 dma_base
= hwif
->mate
->dma_base
- (hwif
->channel
? 0 : 8);
169 u8 baridx
= (d
->host_flags
& IDE_HFLAG_CS5520
) ? 2 : 4;
171 dma_base
= pci_resource_start(dev
, baridx
);
174 printk(KERN_ERR
"%s: DMA base is invalid\n", d
->name
);
177 if ((d
->host_flags
& IDE_HFLAG_CS5520
) == 0 && dma_base
) {
179 dma_base
+= hwif
->channel
? 8 : 0;
181 switch(dev
->device
) {
182 case PCI_DEVICE_ID_AL_M5219
:
183 case PCI_DEVICE_ID_AL_M5229
:
184 case PCI_DEVICE_ID_AMD_VIPER_7409
:
185 case PCI_DEVICE_ID_CMD_643
:
186 case PCI_DEVICE_ID_SERVERWORKS_CSB5IDE
:
187 case PCI_DEVICE_ID_REVOLUTION
:
188 simplex_stat
= inb(dma_base
+ 2);
189 outb(simplex_stat
& 0x60, dma_base
+ 2);
190 simplex_stat
= inb(dma_base
+ 2);
191 if (simplex_stat
& 0x80) {
192 printk(KERN_INFO
"%s: simplex device: "
199 * If the device claims "simplex" DMA,
200 * this means only one of the two interfaces
201 * can be trusted with DMA at any point in time.
202 * So we should enable DMA only on one of the
205 simplex_stat
= hwif
->INB(dma_base
+ 2);
206 if (simplex_stat
& 0x80) {
207 /* simplex device? */
209 * At this point we haven't probed the drives so we can't make the
210 * appropriate decision. Really we should defer this problem
211 * until we tune the drive then try to grab DMA ownership if we want
212 * to be the DMA end. This has to be become dynamic to handle hot
215 if (hwif
->mate
&& hwif
->mate
->dma_base
) {
216 printk(KERN_INFO
"%s: simplex device: "
226 #endif /* CONFIG_BLK_DEV_IDEDMA_PCI */
228 void ide_setup_pci_noise (struct pci_dev
*dev
, ide_pci_device_t
*d
)
230 printk(KERN_INFO
"%s: IDE controller at PCI slot %s\n",
231 d
->name
, pci_name(dev
));
234 EXPORT_SYMBOL_GPL(ide_setup_pci_noise
);
238 * ide_pci_enable - do PCI enables
240 * @d: IDE pci device data
242 * Enable the IDE PCI device. We attempt to enable the device in full
243 * but if that fails then we only need BAR4 so we will enable that.
245 * Returns zero on success or an error code
248 static int ide_pci_enable(struct pci_dev
*dev
, ide_pci_device_t
*d
)
252 if (pci_enable_device(dev
)) {
253 ret
= pci_enable_device_bars(dev
, 1 << 4);
255 printk(KERN_WARNING
"%s: (ide_setup_pci_device:) "
256 "Could not enable device.\n", d
->name
);
259 printk(KERN_WARNING
"%s: BIOS configuration fixed.\n", d
->name
);
263 * assume all devices can do 32-bit dma for now. we can add a
264 * dma mask field to the ide_pci_device_t if we need it (or let
265 * lower level driver set the dma mask)
267 ret
= pci_set_dma_mask(dev
, DMA_32BIT_MASK
);
269 printk(KERN_ERR
"%s: can't set dma mask\n", d
->name
);
273 /* FIXME: Temporary - until we put in the hotplug interface logic
274 Check that the bits we want are not in use by someone else. */
275 ret
= pci_request_region(dev
, 4, "ide_tmp");
279 pci_release_region(dev
, 4);
285 * ide_pci_configure - configure an unconfigured device
287 * @d: IDE pci device data
289 * Enable and configure the PCI device we have been passed.
290 * Returns zero on success or an error code.
293 static int ide_pci_configure(struct pci_dev
*dev
, ide_pci_device_t
*d
)
297 * PnP BIOS was *supposed* to have setup this device, but we
298 * can do it ourselves, so long as the BIOS has assigned an IRQ
299 * (or possibly the device is using a "legacy header" for IRQs).
300 * Maybe the user deliberately *disabled* the device,
301 * but we'll eventually ignore it again if no drives respond.
303 if (ide_setup_pci_baseregs(dev
, d
->name
) || pci_write_config_word(dev
, PCI_COMMAND
, pcicmd
|PCI_COMMAND_IO
))
305 printk(KERN_INFO
"%s: device disabled (BIOS)\n", d
->name
);
308 if (pci_read_config_word(dev
, PCI_COMMAND
, &pcicmd
)) {
309 printk(KERN_ERR
"%s: error accessing PCI regs\n", d
->name
);
312 if (!(pcicmd
& PCI_COMMAND_IO
)) {
313 printk(KERN_ERR
"%s: unable to enable IDE controller\n", d
->name
);
320 * ide_pci_check_iomem - check a register is I/O
325 * Checks if a BAR is configured and points to MMIO space. If so
326 * print an error and return an error code. Otherwise return 0
329 static int ide_pci_check_iomem(struct pci_dev
*dev
, ide_pci_device_t
*d
, int bar
)
331 ulong flags
= pci_resource_flags(dev
, bar
);
334 if (!flags
|| pci_resource_len(dev
, bar
) == 0)
338 if(flags
& PCI_BASE_ADDRESS_IO_MASK
)
342 printk(KERN_ERR
"%s: IO baseregs (BIOS) are reported "
344 "<andre@linux-ide.org>.\n", d
->name
);
349 * ide_hwif_configure - configure an IDE interface
350 * @dev: PCI device holding interface
352 * @mate: Paired interface if any
354 * Perform the initial set up for the hardware interface structure. This
355 * is done per interface port rather than per PCI device. There may be
356 * more than one port per device.
358 * Returns the new hardware interface structure, or NULL on a failure
361 static ide_hwif_t
*ide_hwif_configure(struct pci_dev
*dev
, ide_pci_device_t
*d
, ide_hwif_t
*mate
, int port
, int irq
)
363 unsigned long ctl
= 0, base
= 0;
365 u8 bootable
= (d
->host_flags
& IDE_HFLAG_BOOTABLE
) ? 1 : 0;
367 if ((d
->host_flags
& IDE_HFLAG_ISA_PORTS
) == 0) {
368 /* Possibly we should fail if these checks report true */
369 ide_pci_check_iomem(dev
, d
, 2*port
);
370 ide_pci_check_iomem(dev
, d
, 2*port
+1);
372 ctl
= pci_resource_start(dev
, 2*port
+1);
373 base
= pci_resource_start(dev
, 2*port
);
374 if ((ctl
&& !base
) || (base
&& !ctl
)) {
375 printk(KERN_ERR
"%s: inconsistent baseregs (BIOS) "
376 "for port %d, skipping\n", d
->name
, port
);
382 /* Use default values */
383 ctl
= port
? 0x374 : 0x3f4;
384 base
= port
? 0x170 : 0x1f0;
386 if ((hwif
= ide_match_hwif(base
, bootable
, d
->name
)) == NULL
)
387 return NULL
; /* no room in ide_hwifs[] */
388 if (hwif
->io_ports
[IDE_DATA_OFFSET
] != base
||
389 hwif
->io_ports
[IDE_CONTROL_OFFSET
] != (ctl
| 2)) {
390 memset(&hwif
->hw
, 0, sizeof(hwif
->hw
));
391 #ifndef IDE_ARCH_OBSOLETE_INIT
392 ide_std_init_ports(&hwif
->hw
, base
, (ctl
| 2));
393 hwif
->hw
.io_ports
[IDE_IRQ_OFFSET
] = 0;
395 ide_init_hwif_ports(&hwif
->hw
, base
, (ctl
| 2), NULL
);
397 memcpy(hwif
->io_ports
, hwif
->hw
.io_ports
, sizeof(hwif
->io_ports
));
398 hwif
->noprobe
= !hwif
->io_ports
[IDE_DATA_OFFSET
];
400 hwif
->chipset
= d
->chipset
? d
->chipset
: ide_pci
;
402 hwif
->cds
= (struct ide_pci_device_s
*) d
;
403 hwif
->channel
= port
;
415 * ide_hwif_setup_dma - configure DMA interface
418 * @hwif: Hardware interface we are configuring
420 * Set up the DMA base for the interface. Enable the master bits as
421 * necessary and attempt to bring the device DMA into a ready to use
425 #ifndef CONFIG_BLK_DEV_IDEDMA_PCI
426 static void ide_hwif_setup_dma(struct pci_dev
*dev
, ide_pci_device_t
*d
, ide_hwif_t
*hwif
)
430 static void ide_hwif_setup_dma(struct pci_dev
*dev
, ide_pci_device_t
*d
, ide_hwif_t
*hwif
)
434 pci_read_config_word(dev
, PCI_COMMAND
, &pcicmd
);
436 if ((d
->host_flags
& IDE_HFLAG_NO_AUTODMA
) == 0 ||
437 ((dev
->class >> 8) == PCI_CLASS_STORAGE_IDE
&&
438 (dev
->class & 0x80))) {
439 unsigned long dma_base
= ide_get_or_set_dma_base(d
, hwif
);
440 if (dma_base
&& !(pcicmd
& PCI_COMMAND_MASTER
)) {
442 * Set up BM-DMA capability
443 * (PnP BIOS should have done this)
446 if (pci_read_config_word(dev
, PCI_COMMAND
, &pcicmd
) || !(pcicmd
& PCI_COMMAND_MASTER
)) {
447 printk(KERN_ERR
"%s: %s error updating PCICMD\n",
448 hwif
->name
, d
->name
);
454 d
->init_dma(hwif
, dma_base
);
456 ide_setup_dma(hwif
, dma_base
, 8);
459 printk(KERN_INFO
"%s: %s Bus-Master DMA disabled "
460 "(BIOS)\n", hwif
->name
, d
->name
);
464 #endif /* CONFIG_BLK_DEV_IDEDMA_PCI*/
467 * ide_setup_pci_controller - set up IDE PCI
470 * @noisy: verbose flag
471 * @config: returned as 1 if we configured the hardware
473 * Set up the PCI and controller side of the IDE interface. This brings
474 * up the PCI side of the device, checks that the device is enabled
475 * and enables it if need be
478 static int ide_setup_pci_controller(struct pci_dev
*dev
, ide_pci_device_t
*d
, int noisy
, int *config
)
484 ide_setup_pci_noise(dev
, d
);
486 ret
= ide_pci_enable(dev
, d
);
490 ret
= pci_read_config_word(dev
, PCI_COMMAND
, &pcicmd
);
492 printk(KERN_ERR
"%s: error accessing PCI regs\n", d
->name
);
495 if (!(pcicmd
& PCI_COMMAND_IO
)) { /* is device disabled? */
496 ret
= ide_pci_configure(dev
, d
);
500 printk(KERN_INFO
"%s: device enabled (Linux)\n", d
->name
);
504 printk(KERN_INFO
"%s: chipset revision %d\n",
505 d
->name
, dev
->revision
);
511 * ide_pci_setup_ports - configure ports/devices on PCI IDE
513 * @d: IDE pci device info
515 * @index: ata index to update
517 * Scan the interfaces attached to this device and do any
518 * necessary per port setup. Attach the devices and ask the
519 * generic DMA layer to do its work for us.
521 * Normally called automaticall from do_ide_pci_setup_device,
522 * but is also used directly as a helper function by some controllers
523 * where the chipset setup is not the default PCI IDE one.
526 void ide_pci_setup_ports(struct pci_dev
*dev
, ide_pci_device_t
*d
, int pciirq
, ata_index_t
*index
)
528 int channels
= (d
->host_flags
& IDE_HFLAG_SINGLE
) ? 1 : 2, port
;
529 ide_hwif_t
*hwif
, *mate
= NULL
;
535 * Set up the IDE ports
538 for (port
= 0; port
< channels
; ++port
) {
539 ide_pci_enablebit_t
*e
= &(d
->enablebits
[port
]);
541 if (e
->reg
&& (pci_read_config_byte(dev
, e
->reg
, &tmp
) ||
542 (tmp
& e
->mask
) != e
->val
)) {
543 printk(KERN_INFO
"%s: IDE port disabled\n", d
->name
);
544 continue; /* port not enabled */
547 if ((hwif
= ide_hwif_configure(dev
, d
, mate
, port
, pciirq
)) == NULL
)
550 /* setup proper ancestral information */
551 hwif
->gendev
.parent
= &dev
->dev
;
554 index
->b
.high
= hwif
->index
;
556 index
->b
.low
= hwif
->index
;
563 if ((d
->host_flags
& IDE_HFLAG_NO_DMA
) == 0)
564 ide_hwif_setup_dma(dev
, d
, hwif
);
566 if ((!hwif
->irq
&& (d
->host_flags
& IDE_HFLAG_LEGACY_IRQS
)) ||
567 (d
->host_flags
& IDE_HFLAG_FORCE_LEGACY_IRQS
))
568 hwif
->irq
= port
? 15 : 14;
570 hwif
->fixup
= d
->fixup
;
572 hwif
->host_flags
= d
->host_flags
;
573 hwif
->pio_mask
= d
->pio_mask
;
575 if ((d
->host_flags
& IDE_HFLAG_SERIALIZE
) && hwif
->mate
)
576 hwif
->mate
->serialized
= hwif
->serialized
= 1;
578 if (d
->host_flags
& IDE_HFLAG_IO_32BIT
) {
579 hwif
->drives
[0].io_32bit
= 1;
580 hwif
->drives
[1].io_32bit
= 1;
583 if (d
->host_flags
& IDE_HFLAG_UNMASK_IRQS
) {
584 hwif
->drives
[0].unmask
= 1;
585 hwif
->drives
[1].unmask
= 1;
588 if (hwif
->dma_base
) {
589 hwif
->swdma_mask
= d
->swdma_mask
;
590 hwif
->mwdma_mask
= d
->mwdma_mask
;
591 hwif
->ultra_mask
= d
->udma_mask
;
594 hwif
->drives
[0].autotune
= 1;
595 hwif
->drives
[1].autotune
= 1;
597 if (d
->host_flags
& IDE_HFLAG_RQSIZE_256
)
601 /* Call chipset-specific routine
602 * for each enabled hwif
610 EXPORT_SYMBOL_GPL(ide_pci_setup_ports
);
613 * ide_setup_pci_device() looks at the primary/secondary interfaces
614 * on a PCI IDE device and, if they are enabled, prepares the IDE driver
615 * for use with them. This generic code works for most PCI chipsets.
617 * One thing that is not standardized is the location of the
618 * primary/secondary interface "enable/disable" bits. For chipsets that
619 * we "know" about, this information is in the ide_pci_device_t struct;
620 * for all other chipsets, we just assume both interfaces are enabled.
622 static int do_ide_setup_pci_device(struct pci_dev
*dev
, ide_pci_device_t
*d
,
623 ata_index_t
*index
, u8 noisy
)
625 static ata_index_t ata_index
= { .b
= { .low
= 0xff, .high
= 0xff } };
626 int tried_config
= 0;
629 ret
= ide_setup_pci_controller(dev
, d
, noisy
, &tried_config
);
634 * Can we trust the reported IRQ?
638 /* Is it an "IDE storage" device in non-PCI mode? */
639 if ((dev
->class >> 8) == PCI_CLASS_STORAGE_IDE
&& (dev
->class & 5) != 5) {
641 printk(KERN_INFO
"%s: not 100%% native mode: "
642 "will probe irqs later\n", d
->name
);
644 * This allows offboard ide-pci cards the enable a BIOS,
645 * verify interrupt settings of split-mirror pci-config
646 * space, place chipset into init-mode, and/or preserve
647 * an interrupt if the card is not native ide support.
649 ret
= d
->init_chipset
? d
->init_chipset(dev
, d
->name
) : 0;
653 } else if (tried_config
) {
655 printk(KERN_INFO
"%s: will probe irqs later\n", d
->name
);
657 } else if (!pciirq
) {
659 printk(KERN_WARNING
"%s: bad irq (%d): will probe later\n",
663 if (d
->init_chipset
) {
664 ret
= d
->init_chipset(dev
, d
->name
);
669 printk(KERN_INFO
"%s: 100%% native mode on irq %d\n",
673 /* FIXME: silent failure can happen */
676 ide_pci_setup_ports(dev
, d
, pciirq
, index
);
681 int ide_setup_pci_device(struct pci_dev
*dev
, ide_pci_device_t
*d
)
683 ide_hwif_t
*hwif
= NULL
, *mate
= NULL
;
684 ata_index_t index_list
;
687 ret
= do_ide_setup_pci_device(dev
, d
, &index_list
, 1);
691 if ((index_list
.b
.low
& 0xf0) != 0xf0)
692 hwif
= &ide_hwifs
[index_list
.b
.low
];
693 if ((index_list
.b
.high
& 0xf0) != 0xf0)
694 mate
= &ide_hwifs
[index_list
.b
.high
];
697 probe_hwif_init(hwif
);
699 probe_hwif_init(mate
);
702 ide_proc_register_port(hwif
);
704 ide_proc_register_port(mate
);
709 EXPORT_SYMBOL_GPL(ide_setup_pci_device
);
711 int ide_setup_pci_devices(struct pci_dev
*dev1
, struct pci_dev
*dev2
,
714 struct pci_dev
*pdev
[] = { dev1
, dev2
};
715 ata_index_t index_list
[2];
718 for (i
= 0; i
< 2; i
++) {
719 ret
= do_ide_setup_pci_device(pdev
[i
], d
, index_list
+ i
, !i
);
721 * FIXME: Mom, mom, they stole me the helper function to undo
722 * do_ide_setup_pci_device() on the first device!
728 for (i
= 0; i
< 2; i
++) {
729 u8 idx
[2] = { index_list
[i
].b
.low
, index_list
[i
].b
.high
};
732 for (j
= 0; j
< 2; j
++) {
733 if ((idx
[j
] & 0xf0) != 0xf0)
734 probe_hwif_init(ide_hwifs
+ idx
[j
]);
738 for (i
= 0; i
< 2; i
++) {
739 u8 idx
[2] = { index_list
[i
].b
.low
, index_list
[i
].b
.high
};
742 for (j
= 0; j
< 2; j
++) {
743 if ((idx
[j
] & 0xf0) != 0xf0)
744 ide_proc_register_port(ide_hwifs
+ idx
[j
]);
751 EXPORT_SYMBOL_GPL(ide_setup_pci_devices
);
753 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
758 static int pre_init
= 1; /* Before first ordered IDE scan */
759 static LIST_HEAD(ide_pci_drivers
);
762 * __ide_pci_register_driver - attach IDE driver
763 * @driver: pci driver
764 * @module: owner module of the driver
766 * Registers a driver with the IDE layer. The IDE layer arranges that
767 * boot time setup is done in the expected device order and then
768 * hands the controllers off to the core PCI code to do the rest of
771 * The driver_data of the driver table must point to an ide_pci_device_t
772 * describing the interface.
774 * Returns are the same as for pci_register_driver
777 int __ide_pci_register_driver(struct pci_driver
*driver
, struct module
*module
,
778 const char *mod_name
)
781 return __pci_register_driver(driver
, module
, mod_name
);
782 driver
->driver
.owner
= module
;
783 list_add_tail(&driver
->node
, &ide_pci_drivers
);
787 EXPORT_SYMBOL_GPL(__ide_pci_register_driver
);
790 * ide_scan_pcidev - find an IDE driver for a device
791 * @dev: PCI device to check
793 * Look for an IDE driver to handle the device we are considering.
794 * This is only used during boot up to get the ordering correct. After
795 * boot up the pci layer takes over the job.
798 static int __init
ide_scan_pcidev(struct pci_dev
*dev
)
801 struct pci_driver
*d
;
803 list_for_each(l
, &ide_pci_drivers
) {
804 d
= list_entry(l
, struct pci_driver
, node
);
806 const struct pci_device_id
*id
= pci_match_id(d
->id_table
,
808 if (id
!= NULL
&& d
->probe(dev
, id
) >= 0) {
819 * ide_scan_pcibus - perform the initial IDE driver scan
820 * @scan_direction: set for reverse order scanning
822 * Perform the initial bus rather than driver ordered scan of the
823 * PCI drivers. After this all IDE pci handling becomes standard
824 * module ordering not traditionally ordered.
827 void __init
ide_scan_pcibus (int scan_direction
)
829 struct pci_dev
*dev
= NULL
;
830 struct pci_driver
*d
;
831 struct list_head
*l
, *n
;
835 while ((dev
= pci_get_device(PCI_ANY_ID
, PCI_ANY_ID
, dev
)) != NULL
)
836 ide_scan_pcidev(dev
);
838 while ((dev
= pci_get_device_reverse(PCI_ANY_ID
, PCI_ANY_ID
, dev
))
840 ide_scan_pcidev(dev
);
843 * Hand the drivers over to the PCI layer now we
847 list_for_each_safe(l
, n
, &ide_pci_drivers
) {
849 d
= list_entry(l
, struct pci_driver
, node
);
850 if (__pci_register_driver(d
, d
->driver
.owner
, d
->driver
.mod_name
))
851 printk(KERN_ERR
"%s: failed to register driver for %s\n",
852 __FUNCTION__
, d
->driver
.mod_name
);