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 #ifdef CONFIG_BLK_DEV_IDEDMA_FORCED
151 * Long lost data from 2.0.34 that is now in 2.0.39
153 * This was used in ./drivers/block/triton.c to do DMA Base address setup
154 * when PnP failed. Oh the things we forget. I believe this was part
155 * of SFF-8038i that has been withdrawn from public access... :-((
157 #define DEFAULT_BMIBA 0xe800 /* in case BIOS did not init it */
158 #define DEFAULT_BMCRBA 0xcc00 /* VIA's default value */
159 #define DEFAULT_BMALIBA 0xd400 /* ALI's default value */
160 #endif /* CONFIG_BLK_DEV_IDEDMA_FORCED */
163 * ide_get_or_set_dma_base - setup BMIBA
166 * Fetch the DMA Bus-Master-I/O-Base-Address (BMIBA) from PCI space:
167 * If need be we set up the DMA base. Where a device has a partner that
168 * is already in DMA mode we check and enforce IDE simplex rules.
171 static unsigned long ide_get_or_set_dma_base (ide_hwif_t *hwif)
173 unsigned long dma_base = 0;
174 struct pci_dev *dev = hwif->pci_dev;
176 #ifdef CONFIG_BLK_DEV_IDEDMA_FORCED
177 int second_chance = 0;
179 second_chance_to_dma:
180 #endif /* CONFIG_BLK_DEV_IDEDMA_FORCED */
183 return hwif->dma_base;
185 if (hwif->mate && hwif->mate->dma_base) {
186 dma_base = hwif->mate->dma_base - (hwif->channel ? 0 : 8);
188 dma_base = pci_resource_start(dev, 4);
190 printk(KERN_ERR "%s: dma_base is invalid\n",
195 #ifdef CONFIG_BLK_DEV_IDEDMA_FORCED
196 /* FIXME - should use pci_assign_resource surely */
197 if ((!dma_base) && (!second_chance)) {
198 unsigned long set_bmiba = 0;
200 switch(dev->vendor) {
201 case PCI_VENDOR_ID_AL:
202 set_bmiba = DEFAULT_BMALIBA; break;
203 case PCI_VENDOR_ID_VIA:
204 set_bmiba = DEFAULT_BMCRBA; break;
205 case PCI_VENDOR_ID_INTEL:
206 set_bmiba = DEFAULT_BMIBA; break;
210 pci_write_config_dword(dev, 0x20, set_bmiba|1);
211 goto second_chance_to_dma;
213 #endif /* CONFIG_BLK_DEV_IDEDMA_FORCED */
217 dma_base += hwif->channel ? 8 : 0;
219 switch(dev->device) {
220 case PCI_DEVICE_ID_AL_M5219:
221 case PCI_DEVICE_ID_AL_M5229:
222 case PCI_DEVICE_ID_AMD_VIPER_7409:
223 case PCI_DEVICE_ID_CMD_643:
224 case PCI_DEVICE_ID_SERVERWORKS_CSB5IDE:
225 case PCI_DEVICE_ID_REVOLUTION:
226 simplex_stat = hwif->INB(dma_base + 2);
227 hwif->OUTB((simplex_stat&0x60),(dma_base + 2));
228 simplex_stat = hwif->INB(dma_base + 2);
229 if (simplex_stat & 0x80) {
230 printk(KERN_INFO "%s: simplex device: "
237 * If the device claims "simplex" DMA,
238 * this means only one of the two interfaces
239 * can be trusted with DMA at any point in time.
240 * So we should enable DMA only on one of the
243 simplex_stat = hwif->INB(dma_base + 2);
244 if (simplex_stat & 0x80) {
245 /* simplex device? */
247 * At this point we haven't probed the drives so we can't make the
248 * appropriate decision. Really we should defer this problem
249 * until we tune the drive then try to grab DMA ownership if we want
250 * to be the DMA end. This has to be become dynamic to handle hot
253 if (hwif->mate && hwif->mate->dma_base) {
254 printk(KERN_INFO "%s: simplex device: "
264 #endif /* CONFIG_BLK_DEV_IDEDMA_PCI */
266 void ide_setup_pci_noise (struct pci_dev *dev, ide_pci_device_t *d)
268 printk(KERN_INFO "%s: IDE controller at PCI slot %s\n",
269 d->name, pci_name(dev));
272 EXPORT_SYMBOL_GPL(ide_setup_pci_noise);
276 * ide_pci_enable - do PCI enables
278 * @d: IDE pci device data
280 * Enable the IDE PCI device. We attempt to enable the device in full
281 * but if that fails then we only need BAR4 so we will enable that.
283 * Returns zero on success or an error code
286 static int ide_pci_enable(struct pci_dev *dev, ide_pci_device_t *d)
290 if (pci_enable_device(dev)) {
291 ret = pci_enable_device_bars(dev, 1 << 4);
293 printk(KERN_WARNING "%s: (ide_setup_pci_device:) "
294 "Could not enable device.\n", d->name);
297 printk(KERN_WARNING "%s: BIOS configuration fixed.\n", d->name);
301 * assume all devices can do 32-bit dma for now. we can add a
302 * dma mask field to the ide_pci_device_t if we need it (or let
303 * lower level driver set the dma mask)
305 ret = pci_set_dma_mask(dev, DMA_32BIT_MASK);
307 printk(KERN_ERR "%s: can't set dma mask\n", d->name);
311 /* FIXME: Temporary - until we put in the hotplug interface logic
312 Check that the bits we want are not in use by someone else. */
313 ret = pci_request_region(dev, 4, "ide_tmp");
317 pci_release_region(dev, 4);
323 * ide_pci_configure - configure an unconfigured device
325 * @d: IDE pci device data
327 * Enable and configure the PCI device we have been passed.
328 * Returns zero on success or an error code.
331 static int ide_pci_configure(struct pci_dev *dev, ide_pci_device_t *d)
335 * PnP BIOS was *supposed* to have setup this device, but we
336 * can do it ourselves, so long as the BIOS has assigned an IRQ
337 * (or possibly the device is using a "legacy header" for IRQs).
338 * Maybe the user deliberately *disabled* the device,
339 * but we'll eventually ignore it again if no drives respond.
341 if (ide_setup_pci_baseregs(dev, d->name) || pci_write_config_word(dev, PCI_COMMAND, pcicmd|PCI_COMMAND_IO))
343 printk(KERN_INFO "%s: device disabled (BIOS)\n", d->name);
346 if (pci_read_config_word(dev, PCI_COMMAND, &pcicmd)) {
347 printk(KERN_ERR "%s: error accessing PCI regs\n", d->name);
350 if (!(pcicmd & PCI_COMMAND_IO)) {
351 printk(KERN_ERR "%s: unable to enable IDE controller\n", d->name);
358 * ide_pci_check_iomem - check a register is I/O
363 * Checks if a BAR is configured and points to MMIO space. If so
364 * print an error and return an error code. Otherwise return 0
367 static int ide_pci_check_iomem(struct pci_dev *dev, ide_pci_device_t *d, int bar)
369 ulong flags = pci_resource_flags(dev, bar);
372 if (!flags || pci_resource_len(dev, bar) == 0)
376 if(flags & PCI_BASE_ADDRESS_IO_MASK)
380 printk(KERN_ERR "%s: IO baseregs (BIOS) are reported "
382 "<andre@linux-ide.org>.\n", d->name);
387 * ide_hwif_configure - configure an IDE interface
388 * @dev: PCI device holding interface
390 * @mate: Paired interface if any
392 * Perform the initial set up for the hardware interface structure. This
393 * is done per interface port rather than per PCI device. There may be
394 * more than one port per device.
396 * Returns the new hardware interface structure, or NULL on a failure
399 static ide_hwif_t *ide_hwif_configure(struct pci_dev *dev, ide_pci_device_t *d, ide_hwif_t *mate, int port, int irq)
401 unsigned long ctl = 0, base = 0;
404 if ((d->host_flags & IDE_HFLAG_ISA_PORTS) == 0) {
405 /* Possibly we should fail if these checks report true */
406 ide_pci_check_iomem(dev, d, 2*port);
407 ide_pci_check_iomem(dev, d, 2*port+1);
409 ctl = pci_resource_start(dev, 2*port+1);
410 base = pci_resource_start(dev, 2*port);
411 if ((ctl && !base) || (base && !ctl)) {
412 printk(KERN_ERR "%s: inconsistent baseregs (BIOS) "
413 "for port %d, skipping\n", d->name, port);
419 /* Use default values */
420 ctl = port ? 0x374 : 0x3f4;
421 base = port ? 0x170 : 0x1f0;
423 if ((hwif = ide_match_hwif(base, d->bootable, d->name)) == NULL)
424 return NULL; /* no room in ide_hwifs[] */
425 if (hwif->io_ports[IDE_DATA_OFFSET] != base ||
426 hwif->io_ports[IDE_CONTROL_OFFSET] != (ctl | 2)) {
427 memset(&hwif->hw, 0, sizeof(hwif->hw));
428 #ifndef IDE_ARCH_OBSOLETE_INIT
429 ide_std_init_ports(&hwif->hw, base, (ctl | 2));
430 hwif->hw.io_ports[IDE_IRQ_OFFSET] = 0;
432 ide_init_hwif_ports(&hwif->hw, base, (ctl | 2), NULL);
434 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports));
435 hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET];
437 hwif->chipset = ide_pci;
439 hwif->cds = (struct ide_pci_device_s *) d;
440 hwif->channel = port;
452 * ide_hwif_setup_dma - configure DMA interface
455 * @hwif: Hardware interface we are configuring
457 * Set up the DMA base for the interface. Enable the master bits as
458 * necessary and attempt to bring the device DMA into a ready to use
462 #ifndef CONFIG_BLK_DEV_IDEDMA_PCI
463 static void ide_hwif_setup_dma(struct pci_dev *dev, ide_pci_device_t *d, ide_hwif_t *hwif)
467 static void ide_hwif_setup_dma(struct pci_dev *dev, ide_pci_device_t *d, ide_hwif_t *hwif)
470 pci_read_config_word(dev, PCI_COMMAND, &pcicmd);
472 if ((d->autodma == AUTODMA) ||
473 ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE &&
474 (dev->class & 0x80))) {
475 unsigned long dma_base = ide_get_or_set_dma_base(hwif);
476 if (dma_base && !(pcicmd & PCI_COMMAND_MASTER)) {
478 * Set up BM-DMA capability
479 * (PnP BIOS should have done this)
481 /* default DMA off if we had to configure it here */
484 if (pci_read_config_word(dev, PCI_COMMAND, &pcicmd) || !(pcicmd & PCI_COMMAND_MASTER)) {
485 printk(KERN_ERR "%s: %s error updating PCICMD\n",
486 hwif->name, d->name);
492 d->init_dma(hwif, dma_base);
494 ide_setup_dma(hwif, dma_base, 8);
497 printk(KERN_INFO "%s: %s Bus-Master DMA disabled "
498 "(BIOS)\n", hwif->name, d->name);
502 #endif /* CONFIG_BLK_DEV_IDEDMA_PCI*/
505 * ide_setup_pci_controller - set up IDE PCI
508 * @noisy: verbose flag
509 * @config: returned as 1 if we configured the hardware
511 * Set up the PCI and controller side of the IDE interface. This brings
512 * up the PCI side of the device, checks that the device is enabled
513 * and enables it if need be
516 static int ide_setup_pci_controller(struct pci_dev *dev, ide_pci_device_t *d, int noisy, int *config)
523 ide_setup_pci_noise(dev, d);
525 ret = ide_pci_enable(dev, d);
529 ret = pci_read_config_word(dev, PCI_COMMAND, &pcicmd);
531 printk(KERN_ERR "%s: error accessing PCI regs\n", d->name);
534 if (!(pcicmd & PCI_COMMAND_IO)) { /* is device disabled? */
535 ret = ide_pci_configure(dev, d);
539 printk(KERN_INFO "%s: device enabled (Linux)\n", d->name);
542 pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
545 printk(KERN_INFO "%s: chipset revision %d\n", d->name, class_rev);
551 * ide_pci_setup_ports - configure ports/devices on PCI IDE
553 * @d: IDE pci device info
555 * @index: ata index to update
557 * Scan the interfaces attached to this device and do any
558 * necessary per port setup. Attach the devices and ask the
559 * generic DMA layer to do its work for us.
561 * Normally called automaticall from do_ide_pci_setup_device,
562 * but is also used directly as a helper function by some controllers
563 * where the chipset setup is not the default PCI IDE one.
566 void ide_pci_setup_ports(struct pci_dev *dev, ide_pci_device_t *d, int pciirq, ata_index_t *index)
568 int channels = (d->host_flags & IDE_HFLAG_SINGLE) ? 1 : 2, port;
569 int at_least_one_hwif_enabled = 0;
570 ide_hwif_t *hwif, *mate = NULL;
576 * Set up the IDE ports
579 for (port = 0; port < channels; ++port) {
580 ide_pci_enablebit_t *e = &(d->enablebits[port]);
582 if (e->reg && (pci_read_config_byte(dev, e->reg, &tmp) ||
583 (tmp & e->mask) != e->val))
584 continue; /* port not enabled */
586 if ((hwif = ide_hwif_configure(dev, d, mate, port, pciirq)) == NULL)
589 /* setup proper ancestral information */
590 hwif->gendev.parent = &dev->dev;
593 index->b.high = hwif->index;
595 index->b.low = hwif->index;
602 if (d->autodma == NODMA)
603 goto bypass_legacy_dma;
605 if(d->init_setup_dma)
606 d->init_setup_dma(dev, d, hwif);
608 ide_hwif_setup_dma(dev, d, hwif);
610 hwif->host_flags = d->host_flags;
611 hwif->pio_mask = d->pio_mask;
614 /* Call chipset-specific routine
615 * for each enabled hwif
620 at_least_one_hwif_enabled = 1;
622 if (!at_least_one_hwif_enabled)
623 printk(KERN_INFO "%s: neither IDE port enabled (BIOS)\n", d->name);
626 EXPORT_SYMBOL_GPL(ide_pci_setup_ports);
629 * ide_setup_pci_device() looks at the primary/secondary interfaces
630 * on a PCI IDE device and, if they are enabled, prepares the IDE driver
631 * for use with them. This generic code works for most PCI chipsets.
633 * One thing that is not standardized is the location of the
634 * primary/secondary interface "enable/disable" bits. For chipsets that
635 * we "know" about, this information is in the ide_pci_device_t struct;
636 * for all other chipsets, we just assume both interfaces are enabled.
638 static int do_ide_setup_pci_device(struct pci_dev *dev, ide_pci_device_t *d,
639 ata_index_t *index, u8 noisy)
641 static ata_index_t ata_index = { .b = { .low = 0xff, .high = 0xff } };
642 int tried_config = 0;
645 ret = ide_setup_pci_controller(dev, d, noisy, &tried_config);
650 * Can we trust the reported IRQ?
654 /* Is it an "IDE storage" device in non-PCI mode? */
655 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5) {
657 printk(KERN_INFO "%s: not 100%% native mode: "
658 "will probe irqs later\n", d->name);
660 * This allows offboard ide-pci cards the enable a BIOS,
661 * verify interrupt settings of split-mirror pci-config
662 * space, place chipset into init-mode, and/or preserve
663 * an interrupt if the card is not native ide support.
665 ret = d->init_chipset ? d->init_chipset(dev, d->name) : 0;
669 } else if (tried_config) {
671 printk(KERN_INFO "%s: will probe irqs later\n", d->name);
673 } else if (!pciirq) {
675 printk(KERN_WARNING "%s: bad irq (%d): will probe later\n",
679 if (d->init_chipset) {
680 ret = d->init_chipset(dev, d->name);
685 printk(KERN_INFO "%s: 100%% native mode on irq %d\n",
689 /* FIXME: silent failure can happen */
692 ide_pci_setup_ports(dev, d, pciirq, index);
697 int ide_setup_pci_device(struct pci_dev *dev, ide_pci_device_t *d)
699 ide_hwif_t *hwif = NULL, *mate = NULL;
700 ata_index_t index_list;
703 ret = do_ide_setup_pci_device(dev, d, &index_list, 1);
707 if ((index_list.b.low & 0xf0) != 0xf0)
708 hwif = &ide_hwifs[index_list.b.low];
709 if ((index_list.b.high & 0xf0) != 0xf0)
710 mate = &ide_hwifs[index_list.b.high];
713 probe_hwif_init_with_fixup(hwif, d->fixup);
715 probe_hwif_init_with_fixup(mate, d->fixup);
718 ide_proc_register_port(hwif);
720 ide_proc_register_port(mate);
725 EXPORT_SYMBOL_GPL(ide_setup_pci_device);
727 int ide_setup_pci_devices(struct pci_dev *dev1, struct pci_dev *dev2,
730 struct pci_dev *pdev[] = { dev1, dev2 };
731 ata_index_t index_list[2];
734 for (i = 0; i < 2; i++) {
735 ret = do_ide_setup_pci_device(pdev[i], d, index_list + i, !i);
737 * FIXME: Mom, mom, they stole me the helper function to undo
738 * do_ide_setup_pci_device() on the first device!
744 for (i = 0; i < 2; i++) {
745 u8 idx[2] = { index_list[i].b.low, index_list[i].b.high };
748 for (j = 0; j < 2; j++) {
749 if ((idx[j] & 0xf0) != 0xf0)
750 probe_hwif_init(ide_hwifs + idx[j]);
754 for (i = 0; i < 2; i++) {
755 u8 idx[2] = { index_list[i].b.low, index_list[i].b.high };
758 for (j = 0; j < 2; j++) {
759 if ((idx[j] & 0xf0) != 0xf0)
760 ide_proc_register_port(ide_hwifs + idx[j]);
767 EXPORT_SYMBOL_GPL(ide_setup_pci_devices);
769 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
774 static int pre_init = 1; /* Before first ordered IDE scan */
775 static LIST_HEAD(ide_pci_drivers);
778 * __ide_pci_register_driver - attach IDE driver
779 * @driver: pci driver
780 * @module: owner module of the driver
782 * Registers a driver with the IDE layer. The IDE layer arranges that
783 * boot time setup is done in the expected device order and then
784 * hands the controllers off to the core PCI code to do the rest of
787 * The driver_data of the driver table must point to an ide_pci_device_t
788 * describing the interface.
790 * Returns are the same as for pci_register_driver
793 int __ide_pci_register_driver(struct pci_driver *driver, struct module *module,
794 const char *mod_name)
797 return __pci_register_driver(driver, module, mod_name);
798 driver->driver.owner = module;
799 list_add_tail(&driver->node, &ide_pci_drivers);
803 EXPORT_SYMBOL_GPL(__ide_pci_register_driver);
806 * ide_scan_pcidev - find an IDE driver for a device
807 * @dev: PCI device to check
809 * Look for an IDE driver to handle the device we are considering.
810 * This is only used during boot up to get the ordering correct. After
811 * boot up the pci layer takes over the job.
814 static int __init ide_scan_pcidev(struct pci_dev *dev)
817 struct pci_driver *d;
819 list_for_each(l, &ide_pci_drivers)
821 d = list_entry(l, struct pci_driver, node);
824 const struct pci_device_id *id = pci_match_id(d->id_table, dev);
827 if(d->probe(dev, id) >= 0)
839 * ide_scan_pcibus - perform the initial IDE driver scan
840 * @scan_direction: set for reverse order scanning
842 * Perform the initial bus rather than driver ordered scan of the
843 * PCI drivers. After this all IDE pci handling becomes standard
844 * module ordering not traditionally ordered.
847 void __init ide_scan_pcibus (int scan_direction)
849 struct pci_dev *dev = NULL;
850 struct pci_driver *d;
851 struct list_head *l, *n;
854 if (!scan_direction) {
855 while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
856 ide_scan_pcidev(dev);
859 while ((dev = pci_get_device_reverse(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
860 ide_scan_pcidev(dev);
865 * Hand the drivers over to the PCI layer now we
869 list_for_each_safe(l, n, &ide_pci_drivers) {
871 d = list_entry(l, struct pci_driver, node);
872 if (__pci_register_driver(d, d->driver.owner,
873 d->driver.mod_name)) {
874 printk(KERN_ERR "%s: failed to register driver "
875 "for %s\n", __FUNCTION__,