2 * Copyright (C) 1994-1998 Linus Torvalds & authors (see below)
6 * Mostly written by Mark Lord <mlord@pobox.com>
7 * and Gadi Oxman <gadio@netvision.net.il>
8 * and Andre Hedrick <andre@linux-ide.org>
10 * See linux/MAINTAINERS for address of current maintainer.
12 * This is the multiple IDE interface driver, as evolved from hd.c.
13 * It supports up to MAX_HWIFS IDE interfaces, on one or more IRQs
15 * There can be up to two drives per interface, as per the ATA-2 spec.
21 * | It traverses the request-list, using interrupts to jump between functions.
22 * | As nearly all functions can be called within interrupts, we may not sleep.
23 * | Special care is recommended. Have Fun!
25 * | modified by Drew Eckhardt to check nr of hd's from the CMOS.
27 * | Thanks to Branko Lankester, lankeste@fwi.uva.nl, who found a bug
28 * | in the early extended-partition checks and added DM partitions.
30 * | Early work on error handling by Mika Liljeberg (liljeber@cs.Helsinki.FI).
32 * | IRQ-unmask, drive-id, multiple-mode, support for ">16 heads",
33 * | and general streamlining by Mark Lord (mlord@pobox.com).
35 * October, 1994 -- Complete line-by-line overhaul for linux 1.1.x, by:
37 * Mark Lord (mlord@pobox.com) (IDE Perf.Pkg)
38 * Delman Lee (delman@ieee.org) ("Mr. atdisk2")
39 * Scott Snyder (snyder@fnald0.fnal.gov) (ATAPI IDE cd-rom)
41 * This was a rewrite of just about everything from hd.c, though some original
42 * code is still sprinkled about. Think of it as a major evolution, with
43 * inspiration from lots of linux users, esp. hamish@zot.apana.org.au
46 #define REVISION "Revision: 7.00alpha2"
48 #define _IDE_C /* Tell ide.h it's really us */
50 #include <linux/module.h>
51 #include <linux/types.h>
52 #include <linux/string.h>
53 #include <linux/kernel.h>
54 #include <linux/timer.h>
56 #include <linux/interrupt.h>
57 #include <linux/major.h>
58 #include <linux/errno.h>
59 #include <linux/genhd.h>
60 #include <linux/blkpg.h>
61 #include <linux/slab.h>
62 #include <linux/init.h>
63 #include <linux/pci.h>
64 #include <linux/delay.h>
65 #include <linux/ide.h>
66 #include <linux/completion.h>
67 #include <linux/reboot.h>
68 #include <linux/cdrom.h>
69 #include <linux/seq_file.h>
70 #include <linux/device.h>
71 #include <linux/bitops.h>
73 #include <asm/byteorder.h>
75 #include <asm/uaccess.h>
79 /* default maximum number of failures */
80 #define IDE_DEFAULT_MAX_FAILURES 1
82 static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR,
83 IDE2_MAJOR, IDE3_MAJOR,
84 IDE4_MAJOR, IDE5_MAJOR,
85 IDE6_MAJOR, IDE7_MAJOR,
86 IDE8_MAJOR, IDE9_MAJOR };
88 static int idebus_parameter; /* holds the "idebus=" parameter */
89 static int system_bus_speed; /* holds what we think is VESA/PCI bus speed */
91 DEFINE_MUTEX(ide_cfg_mtx);
92 __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock);
94 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
95 int ide_scan_direction; /* THIS was formerly 2.2.x pci=reverse */
100 #ifdef CONFIG_BLK_DEV_IDEACPI
102 int ide_noacpitfs = 1;
103 int ide_noacpionboot = 1;
107 * This is declared extern in ide.h, for access by other IDE modules:
109 ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */
111 EXPORT_SYMBOL(ide_hwifs);
114 * Do not even *think* about calling this!
116 void ide_init_port_data(ide_hwif_t *hwif, unsigned int index)
120 /* bulk initialize hwif & drive info with zeros */
121 memset(hwif, 0, sizeof(ide_hwif_t));
123 /* fill in any non-zero initial values */
125 hwif->major = ide_hwif_to_major[index];
130 hwif->name[3] = '0' + index;
132 hwif->bus_state = BUSSTATE_ON;
134 init_completion(&hwif->gendev_rel_comp);
136 default_hwif_iops(hwif);
137 default_hwif_transport(hwif);
138 for (unit = 0; unit < MAX_DRIVES; ++unit) {
139 ide_drive_t *drive = &hwif->drives[unit];
141 drive->media = ide_disk;
142 drive->select.all = (unit<<4)|0xa0;
145 drive->ready_stat = READY_STAT;
146 drive->bad_wstat = BAD_W_STAT;
147 drive->special.b.recalibrate = 1;
148 drive->special.b.set_geometry = 1;
149 drive->name[0] = 'h';
150 drive->name[1] = 'd';
151 drive->name[2] = 'a' + (index * MAX_DRIVES) + unit;
152 drive->max_failures = IDE_DEFAULT_MAX_FAILURES;
153 drive->using_dma = 0;
155 INIT_LIST_HEAD(&drive->list);
156 init_completion(&drive->gendev_rel_comp);
159 EXPORT_SYMBOL_GPL(ide_init_port_data);
161 static void init_hwif_default(ide_hwif_t *hwif, unsigned int index)
165 memset(&hw, 0, sizeof(hw_regs_t));
167 ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, &hwif->irq);
169 memcpy(hwif->io_ports, hw.io_ports, sizeof(hw.io_ports));
171 hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET];
172 #ifdef CONFIG_BLK_DEV_HD
173 if (hwif->io_ports[IDE_DATA_OFFSET] == HD_DATA)
174 hwif->noprobe = 1; /* may be overridden by ide_setup() */
179 * init_ide_data() sets reasonable default values into all fields
180 * of all instances of the hwifs and drives, but only on the first call.
181 * Subsequent calls have no effect (they don't wipe out anything).
183 * This routine is normally called at driver initialization time,
184 * but may also be called MUCH earlier during kernel "command-line"
185 * parameter processing. As such, we cannot depend on any other parts
186 * of the kernel (such as memory allocation) to be functioning yet.
188 * This is too bad, as otherwise we could dynamically allocate the
189 * ide_drive_t structs as needed, rather than always consuming memory
190 * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them.
192 * FIXME: We should stuff the setup data into __init and copy the
193 * relevant hwifs/allocate them properly during boot.
195 #define MAGIC_COOKIE 0x12345678
196 static void __init init_ide_data (void)
200 static unsigned long magic_cookie = MAGIC_COOKIE;
202 if (magic_cookie != MAGIC_COOKIE)
203 return; /* already initialized */
206 /* Initialise all interface structures */
207 for (index = 0; index < MAX_HWIFS; ++index) {
208 hwif = &ide_hwifs[index];
209 ide_init_port_data(hwif, index);
210 init_hwif_default(hwif, index);
211 #if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI)
213 ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]);
219 * ide_system_bus_speed - guess bus speed
221 * ide_system_bus_speed() returns what we think is the system VESA/PCI
222 * bus speed (in MHz). This is used for calculating interface PIO timings.
223 * The default is 40 for known PCI systems, 50 otherwise.
224 * The "idebus=xx" parameter can be used to override this value.
225 * The actual value to be used is computed/displayed the first time
226 * through. Drivers should only use this as a last resort.
228 * Returns a guessed speed in MHz.
231 static int ide_system_bus_speed(void)
234 static struct pci_device_id pci_default[] = {
235 { PCI_DEVICE(PCI_ANY_ID, PCI_ANY_ID) },
239 #define pci_default 0
240 #endif /* CONFIG_PCI */
242 if (!system_bus_speed) {
243 if (idebus_parameter) {
244 /* user supplied value */
245 system_bus_speed = idebus_parameter;
246 } else if (pci_dev_present(pci_default)) {
247 /* safe default value for PCI */
248 system_bus_speed = 33;
250 /* safe default value for VESA and PCI */
251 system_bus_speed = 50;
253 printk(KERN_INFO "ide: Assuming %dMHz system bus speed "
254 "for PIO modes%s\n", system_bus_speed,
255 idebus_parameter ? "" : "; override with idebus=xx");
257 return system_bus_speed;
260 ide_hwif_t * ide_find_port(unsigned long base)
265 for (i = 0; i < MAX_HWIFS; i++) {
266 hwif = &ide_hwifs[i];
267 if (hwif->io_ports[IDE_DATA_OFFSET] == base)
271 for (i = 0; i < MAX_HWIFS; i++) {
272 hwif = &ide_hwifs[i];
273 if (hwif->io_ports[IDE_DATA_OFFSET] == 0)
282 EXPORT_SYMBOL_GPL(ide_find_port);
284 static struct resource* hwif_request_region(ide_hwif_t *hwif,
285 unsigned long addr, int num)
287 struct resource *res = request_region(addr, num, hwif->name);
290 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
291 hwif->name, addr, addr+num-1);
296 * ide_hwif_request_regions - request resources for IDE
297 * @hwif: interface to use
299 * Requests all the needed resources for an interface.
300 * Right now core IDE code does this work which is deeply wrong.
301 * MMIO leaves it to the controller driver,
302 * PIO will migrate this way over time.
305 int ide_hwif_request_regions(ide_hwif_t *hwif)
312 addr = hwif->io_ports[IDE_CONTROL_OFFSET];
313 if (addr && !hwif_request_region(hwif, addr, 1))
314 goto control_region_busy;
316 addr = hwif->io_ports[IDE_DATA_OFFSET];
317 if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) {
318 if (!hwif_request_region(hwif, addr, 8))
319 goto data_region_busy;
323 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
324 addr = hwif->io_ports[i];
325 if (!hwif_request_region(hwif, addr, 1)) {
327 release_region(addr, 1);
328 goto data_region_busy;
334 addr = hwif->io_ports[IDE_CONTROL_OFFSET];
336 release_region(addr, 1);
338 /* If any errors are return, we drop the hwif interface. */
343 * ide_hwif_release_regions - free IDE resources
345 * Note that we only release the standard ports,
346 * and do not even try to handle any extra ports
347 * allocated for weird IDE interface chipsets.
349 * Note also that we don't yet handle mmio resources here. More
350 * importantly our caller should be doing this so we need to
351 * restructure this as a helper function for drivers.
354 void ide_hwif_release_regions(ide_hwif_t *hwif)
360 if (hwif->io_ports[IDE_CONTROL_OFFSET])
361 release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1);
362 if (hwif->straight8) {
363 release_region(hwif->io_ports[IDE_DATA_OFFSET], 8);
366 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
367 if (hwif->io_ports[i])
368 release_region(hwif->io_ports[i], 1);
372 * ide_hwif_restore - restore hwif to template
373 * @hwif: hwif to update
374 * @tmp_hwif: template
376 * Restore hwif to a previous state by copying most settings
380 static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
382 hwif->hwgroup = tmp_hwif->hwgroup;
384 hwif->gendev.parent = tmp_hwif->gendev.parent;
386 hwif->proc = tmp_hwif->proc;
388 hwif->major = tmp_hwif->major;
389 hwif->straight8 = tmp_hwif->straight8;
390 hwif->bus_state = tmp_hwif->bus_state;
392 hwif->host_flags = tmp_hwif->host_flags;
394 hwif->pio_mask = tmp_hwif->pio_mask;
396 hwif->ultra_mask = tmp_hwif->ultra_mask;
397 hwif->mwdma_mask = tmp_hwif->mwdma_mask;
398 hwif->swdma_mask = tmp_hwif->swdma_mask;
400 hwif->cbl = tmp_hwif->cbl;
402 hwif->chipset = tmp_hwif->chipset;
403 hwif->hold = tmp_hwif->hold;
405 hwif->dev = tmp_hwif->dev;
407 #ifdef CONFIG_BLK_DEV_IDEPCI
408 hwif->cds = tmp_hwif->cds;
411 hwif->set_pio_mode = tmp_hwif->set_pio_mode;
412 hwif->set_dma_mode = tmp_hwif->set_dma_mode;
413 hwif->mdma_filter = tmp_hwif->mdma_filter;
414 hwif->udma_filter = tmp_hwif->udma_filter;
415 hwif->selectproc = tmp_hwif->selectproc;
416 hwif->reset_poll = tmp_hwif->reset_poll;
417 hwif->pre_reset = tmp_hwif->pre_reset;
418 hwif->resetproc = tmp_hwif->resetproc;
419 hwif->maskproc = tmp_hwif->maskproc;
420 hwif->quirkproc = tmp_hwif->quirkproc;
421 hwif->busproc = tmp_hwif->busproc;
423 hwif->ata_input_data = tmp_hwif->ata_input_data;
424 hwif->ata_output_data = tmp_hwif->ata_output_data;
425 hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes;
426 hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes;
428 hwif->dma_host_set = tmp_hwif->dma_host_set;
429 hwif->dma_setup = tmp_hwif->dma_setup;
430 hwif->dma_exec_cmd = tmp_hwif->dma_exec_cmd;
431 hwif->dma_start = tmp_hwif->dma_start;
432 hwif->ide_dma_end = tmp_hwif->ide_dma_end;
433 hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq;
434 hwif->ide_dma_clear_irq = tmp_hwif->ide_dma_clear_irq;
435 hwif->dma_lost_irq = tmp_hwif->dma_lost_irq;
436 hwif->dma_timeout = tmp_hwif->dma_timeout;
438 hwif->OUTB = tmp_hwif->OUTB;
439 hwif->OUTBSYNC = tmp_hwif->OUTBSYNC;
440 hwif->OUTW = tmp_hwif->OUTW;
441 hwif->OUTSW = tmp_hwif->OUTSW;
442 hwif->OUTSL = tmp_hwif->OUTSL;
444 hwif->INB = tmp_hwif->INB;
445 hwif->INW = tmp_hwif->INW;
446 hwif->INSW = tmp_hwif->INSW;
447 hwif->INSL = tmp_hwif->INSL;
449 hwif->sg_max_nents = tmp_hwif->sg_max_nents;
451 hwif->mmio = tmp_hwif->mmio;
452 hwif->rqsize = tmp_hwif->rqsize;
454 #ifndef CONFIG_BLK_DEV_IDECS
455 hwif->irq = tmp_hwif->irq;
458 hwif->dma_base = tmp_hwif->dma_base;
459 hwif->dma_command = tmp_hwif->dma_command;
460 hwif->dma_vendor1 = tmp_hwif->dma_vendor1;
461 hwif->dma_status = tmp_hwif->dma_status;
462 hwif->dma_vendor3 = tmp_hwif->dma_vendor3;
463 hwif->dma_prdtable = tmp_hwif->dma_prdtable;
465 hwif->config_data = tmp_hwif->config_data;
466 hwif->select_data = tmp_hwif->select_data;
467 hwif->extra_base = tmp_hwif->extra_base;
468 hwif->extra_ports = tmp_hwif->extra_ports;
470 hwif->hwif_data = tmp_hwif->hwif_data;
474 * ide_unregister - free an IDE interface
475 * @index: index of interface (will change soon to a pointer)
477 * Perform the final unregister of an IDE interface. At the moment
478 * we don't refcount interfaces so this will also get split up.
481 * The caller must not hold the IDE locks
482 * The drive present/vanishing is not yet properly locked
483 * Take care with the callbacks. These have been split to avoid
484 * deadlocking the IDE layer. The shutdown callback is called
485 * before we take the lock and free resources. It is up to the
486 * caller to be sure there is no pending I/O here, and that
487 * the interface will not be reopened (present/vanishing locking
488 * isn't yet done BTW). After we commit to the final kill we
489 * call the cleanup callback with the ide locks held.
491 * Unregister restores the hwif structures to the default state.
492 * This is raving bonkers.
495 void ide_unregister(unsigned int index)
498 ide_hwif_t *hwif, *g;
499 static ide_hwif_t tmp_hwif; /* protected by ide_cfg_mtx */
500 ide_hwgroup_t *hwgroup;
501 int irq_count = 0, unit;
503 BUG_ON(index >= MAX_HWIFS);
505 BUG_ON(in_interrupt());
506 BUG_ON(irqs_disabled());
507 mutex_lock(&ide_cfg_mtx);
508 spin_lock_irq(&ide_lock);
509 hwif = &ide_hwifs[index];
512 for (unit = 0; unit < MAX_DRIVES; ++unit) {
513 drive = &hwif->drives[unit];
516 spin_unlock_irq(&ide_lock);
517 device_unregister(&drive->gendev);
518 wait_for_completion(&drive->gendev_rel_comp);
519 spin_lock_irq(&ide_lock);
523 spin_unlock_irq(&ide_lock);
525 ide_proc_unregister_port(hwif);
527 hwgroup = hwif->hwgroup;
529 * free the irq if we were the only hwif using it
533 if (g->irq == hwif->irq)
536 } while (g != hwgroup->hwif);
538 free_irq(hwif->irq, hwgroup);
540 spin_lock_irq(&ide_lock);
542 * Note that we only release the standard ports,
543 * and do not even try to handle any extra ports
544 * allocated for weird IDE interface chipsets.
546 ide_hwif_release_regions(hwif);
549 * Remove us from the hwgroup, and free
550 * the hwgroup if we were the only member
552 if (hwif->next == hwif) {
553 BUG_ON(hwgroup->hwif != hwif);
556 /* There is another interface in hwgroup.
557 * Unlink us, and set hwgroup->drive and ->hwif to
561 while (g->next != hwif)
563 g->next = hwif->next;
564 if (hwgroup->hwif == hwif) {
565 /* Chose a random hwif for hwgroup->hwif.
566 * It's guaranteed that there are no drives
567 * left in the hwgroup.
569 BUG_ON(hwgroup->drive != NULL);
572 BUG_ON(hwgroup->hwif == hwif);
575 /* More messed up locking ... */
576 spin_unlock_irq(&ide_lock);
577 device_unregister(&hwif->gendev);
578 wait_for_completion(&hwif->gendev_rel_comp);
581 * Remove us from the kernel's knowledge
583 blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS);
584 kfree(hwif->sg_table);
585 unregister_blkdev(hwif->major, hwif->name);
586 spin_lock_irq(&ide_lock);
588 if (hwif->dma_base) {
589 (void) ide_release_dma(hwif);
592 hwif->dma_command = 0;
593 hwif->dma_vendor1 = 0;
594 hwif->dma_status = 0;
595 hwif->dma_vendor3 = 0;
596 hwif->dma_prdtable = 0;
598 hwif->extra_base = 0;
599 hwif->extra_ports = 0;
602 /* copy original settings */
605 /* restore hwif data to pristine status */
606 ide_init_port_data(hwif, index);
607 init_hwif_default(hwif, index);
609 ide_hwif_restore(hwif, &tmp_hwif);
612 spin_unlock_irq(&ide_lock);
613 mutex_unlock(&ide_cfg_mtx);
616 EXPORT_SYMBOL(ide_unregister);
620 * ide_setup_ports - set up IDE interface ports
621 * @hw: register descriptions
622 * @base: base register
623 * @offsets: table of register offsets
624 * @ctrl: control register
626 * @irq: interrupt lie
628 * Setup hw_regs_t structure described by parameters. You
629 * may set up the hw structure yourself OR use this routine to
630 * do it for you. This is basically a helper
634 void ide_setup_ports ( hw_regs_t *hw,
635 unsigned long base, int *offsets,
636 unsigned long ctrl, unsigned long intr,
637 ide_ack_intr_t *ack_intr,
639 * ide_io_ops_t *iops,
645 memset(hw, 0, sizeof(hw_regs_t));
646 for (i = 0; i < IDE_NR_PORTS; i++) {
647 if (offsets[i] == -1) {
649 case IDE_CONTROL_OFFSET:
650 hw->io_ports[i] = ctrl;
652 #if defined(CONFIG_AMIGA) || defined(CONFIG_MAC)
654 hw->io_ports[i] = intr;
656 #endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */
662 hw->io_ports[i] = base + offsets[i];
666 hw->ack_intr = ack_intr;
672 void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw)
674 memcpy(hwif->io_ports, hw->io_ports, sizeof(hwif->io_ports));
677 hwif->chipset = hw->chipset;
678 hwif->gendev.parent = hw->dev;
679 hwif->ack_intr = hw->ack_intr;
681 EXPORT_SYMBOL_GPL(ide_init_port_hw);
684 * ide_register_hw - register IDE interface
685 * @hw: hardware registers
686 * @quirkproc: quirkproc function
687 * @hwifp: pointer to returned hwif
689 * Register an IDE interface, specifying exactly the registers etc.
691 * Returns -1 on error.
694 int ide_register_hw(hw_regs_t *hw, void (*quirkproc)(ide_drive_t *),
697 int index, retry = 1;
699 u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
702 for (index = 0; index < MAX_HWIFS; ++index) {
703 hwif = &ide_hwifs[index];
704 if (hwif->io_ports[IDE_DATA_OFFSET] == hw->io_ports[IDE_DATA_OFFSET])
707 for (index = 0; index < MAX_HWIFS; ++index) {
708 hwif = &ide_hwifs[index];
711 if (!hwif->present && hwif->mate == NULL)
714 for (index = 0; index < MAX_HWIFS; index++)
715 ide_unregister(index);
720 ide_unregister(index);
721 else if (!hwif->hold) {
722 ide_init_port_data(hwif, index);
723 init_hwif_default(hwif, index);
728 ide_init_port_hw(hwif, hw);
729 hwif->quirkproc = quirkproc;
738 return hwif->present ? index : -1;
741 EXPORT_SYMBOL(ide_register_hw);
744 * Locks for IDE setting functionality
747 DEFINE_MUTEX(ide_setting_mtx);
749 EXPORT_SYMBOL_GPL(ide_setting_mtx);
752 * ide_spin_wait_hwgroup - wait for group
753 * @drive: drive in the group
755 * Wait for an IDE device group to go non busy and then return
756 * holding the ide_lock which guards the hwgroup->busy status
757 * and right to use it.
760 int ide_spin_wait_hwgroup (ide_drive_t *drive)
762 ide_hwgroup_t *hwgroup = HWGROUP(drive);
763 unsigned long timeout = jiffies + (3 * HZ);
765 spin_lock_irq(&ide_lock);
767 while (hwgroup->busy) {
768 unsigned long lflags;
769 spin_unlock_irq(&ide_lock);
770 local_irq_set(lflags);
771 if (time_after(jiffies, timeout)) {
772 local_irq_restore(lflags);
773 printk(KERN_ERR "%s: channel busy\n", drive->name);
776 local_irq_restore(lflags);
777 spin_lock_irq(&ide_lock);
782 EXPORT_SYMBOL(ide_spin_wait_hwgroup);
784 int set_io_32bit(ide_drive_t *drive, int arg)
786 if (drive->no_io_32bit)
789 if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1))
792 if (ide_spin_wait_hwgroup(drive))
795 drive->io_32bit = arg;
796 #ifdef CONFIG_BLK_DEV_DTC2278
797 if (HWIF(drive)->chipset == ide_dtc2278)
798 HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg;
799 #endif /* CONFIG_BLK_DEV_DTC2278 */
801 spin_unlock_irq(&ide_lock);
806 static int set_ksettings(ide_drive_t *drive, int arg)
808 if (arg < 0 || arg > 1)
811 if (ide_spin_wait_hwgroup(drive))
813 drive->keep_settings = arg;
814 spin_unlock_irq(&ide_lock);
819 int set_using_dma(ide_drive_t *drive, int arg)
821 #ifdef CONFIG_BLK_DEV_IDEDMA
822 ide_hwif_t *hwif = drive->hwif;
825 if (arg < 0 || arg > 1)
828 if (!drive->id || !(drive->id->capability & 1))
831 if (hwif->dma_host_set == NULL)
835 if (ide_spin_wait_hwgroup(drive))
838 * set ->busy flag, unlock and let it ride
840 hwif->hwgroup->busy = 1;
841 spin_unlock_irq(&ide_lock);
846 if (ide_set_dma(drive))
852 * lock, clear ->busy flag and unlock before leaving
854 spin_lock_irq(&ide_lock);
855 hwif->hwgroup->busy = 0;
856 spin_unlock_irq(&ide_lock);
860 if (arg < 0 || arg > 1)
867 int set_pio_mode(ide_drive_t *drive, int arg)
871 if (arg < 0 || arg > 255)
874 if (drive->hwif->set_pio_mode == NULL)
877 if (drive->special.b.set_tune)
880 ide_init_drive_cmd(&rq);
881 rq.cmd_type = REQ_TYPE_ATA_TASKFILE;
883 drive->tune_req = (u8) arg;
884 drive->special.b.set_tune = 1;
885 (void) ide_do_drive_cmd(drive, &rq, ide_wait);
889 static int set_unmaskirq(ide_drive_t *drive, int arg)
891 if (drive->no_unmask)
894 if (arg < 0 || arg > 1)
897 if (ide_spin_wait_hwgroup(drive))
900 spin_unlock_irq(&ide_lock);
906 * system_bus_clock - clock guess
908 * External version of the bus clock guess used by very old IDE drivers
909 * for things like VLB timings. Should not be used.
912 int system_bus_clock (void)
914 return((int) ((!system_bus_speed) ? ide_system_bus_speed() : system_bus_speed ));
917 EXPORT_SYMBOL(system_bus_clock);
919 static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
921 ide_drive_t *drive = dev->driver_data;
922 ide_hwif_t *hwif = HWIF(drive);
924 struct request_pm_state rqpm;
928 /* Call ACPI _GTM only once */
929 if (!(drive->dn % 2))
930 ide_acpi_get_timing(hwif);
932 memset(&rq, 0, sizeof(rq));
933 memset(&rqpm, 0, sizeof(rqpm));
934 memset(&args, 0, sizeof(args));
935 rq.cmd_type = REQ_TYPE_PM_SUSPEND;
938 rqpm.pm_step = ide_pm_state_start_suspend;
939 if (mesg.event == PM_EVENT_PRETHAW)
940 mesg.event = PM_EVENT_FREEZE;
941 rqpm.pm_state = mesg.event;
943 ret = ide_do_drive_cmd(drive, &rq, ide_wait);
944 /* only call ACPI _PS3 after both drivers are suspended */
945 if (!ret && (((drive->dn % 2) && hwif->drives[0].present
946 && hwif->drives[1].present)
947 || !hwif->drives[0].present
948 || !hwif->drives[1].present))
949 ide_acpi_set_state(hwif, 0);
953 static int generic_ide_resume(struct device *dev)
955 ide_drive_t *drive = dev->driver_data;
956 ide_hwif_t *hwif = HWIF(drive);
958 struct request_pm_state rqpm;
962 /* Call ACPI _STM only once */
963 if (!(drive->dn % 2)) {
964 ide_acpi_set_state(hwif, 1);
965 ide_acpi_push_timing(hwif);
968 ide_acpi_exec_tfs(drive);
970 memset(&rq, 0, sizeof(rq));
971 memset(&rqpm, 0, sizeof(rqpm));
972 memset(&args, 0, sizeof(args));
973 rq.cmd_type = REQ_TYPE_PM_RESUME;
976 rqpm.pm_step = ide_pm_state_start_resume;
977 rqpm.pm_state = PM_EVENT_ON;
979 err = ide_do_drive_cmd(drive, &rq, ide_head_wait);
981 if (err == 0 && dev->driver) {
982 ide_driver_t *drv = to_ide_driver(dev->driver);
991 int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev,
992 unsigned int cmd, unsigned long arg)
996 void __user *p = (void __user *)arg;
997 int err = 0, (*setfunc)(ide_drive_t *, int);
1001 case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val;
1002 case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val;
1003 case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val;
1004 case HDIO_GET_DMA: val = &drive->using_dma; goto read_val;
1005 case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val;
1006 case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val;
1007 case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val;
1008 case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val;
1009 case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val;
1013 case HDIO_OBSOLETE_IDENTITY:
1014 case HDIO_GET_IDENTITY:
1015 if (bdev != bdev->bd_contains)
1017 if (drive->id_read == 0)
1019 if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142))
1024 return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP |
1025 drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP |
1026 drive->nice0 << IDE_NICE_0 |
1027 drive->nice1 << IDE_NICE_1 |
1028 drive->nice2 << IDE_NICE_2,
1029 (long __user *) arg);
1031 #ifdef CONFIG_IDE_TASK_IOCTL
1032 case HDIO_DRIVE_TASKFILE:
1033 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
1035 switch(drive->media) {
1037 return ide_taskfile_ioctl(drive, cmd, arg);
1041 #endif /* CONFIG_IDE_TASK_IOCTL */
1043 case HDIO_DRIVE_CMD:
1044 if (!capable(CAP_SYS_RAWIO))
1046 return ide_cmd_ioctl(drive, cmd, arg);
1048 case HDIO_DRIVE_TASK:
1049 if (!capable(CAP_SYS_RAWIO))
1051 return ide_task_ioctl(drive, cmd, arg);
1053 case HDIO_SCAN_HWIF:
1057 if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1058 if (copy_from_user(args, p, 3 * sizeof(int)))
1060 memset(&hw, 0, sizeof(hw));
1061 ide_init_hwif_ports(&hw, (unsigned long) args[0],
1062 (unsigned long) args[1], NULL);
1064 if (ide_register_hw(&hw, NULL, NULL) == -1)
1068 case HDIO_UNREGISTER_HWIF:
1069 if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1070 /* (arg > MAX_HWIFS) checked in function */
1071 ide_unregister(arg);
1074 if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1075 if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1))))
1077 drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1;
1078 drv = *(ide_driver_t **)bdev->bd_disk->private_data;
1079 if (drive->dsc_overlap && !drv->supports_dsc_overlap) {
1080 drive->dsc_overlap = 0;
1083 drive->nice1 = (arg >> IDE_NICE_1) & 1;
1085 case HDIO_DRIVE_RESET:
1087 unsigned long flags;
1088 if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1091 * Abort the current command on the
1092 * group if there is one, taking
1093 * care not to allow anything else
1094 * to be queued and to die on the
1095 * spot if we miss one somehow
1098 spin_lock_irqsave(&ide_lock, flags);
1100 if (HWGROUP(drive)->resetting) {
1101 spin_unlock_irqrestore(&ide_lock, flags);
1105 ide_abort(drive, "drive reset");
1107 BUG_ON(HWGROUP(drive)->handler);
1109 /* Ensure nothing gets queued after we
1110 drop the lock. Reset will clear the busy */
1112 HWGROUP(drive)->busy = 1;
1113 spin_unlock_irqrestore(&ide_lock, flags);
1114 (void) ide_do_reset(drive);
1119 case HDIO_GET_BUSSTATE:
1120 if (!capable(CAP_SYS_ADMIN))
1122 if (put_user(HWIF(drive)->bus_state, (long __user *)arg))
1126 case HDIO_SET_BUSSTATE:
1127 if (!capable(CAP_SYS_ADMIN))
1129 if (HWIF(drive)->busproc)
1130 return HWIF(drive)->busproc(drive, (int)arg);
1137 mutex_lock(&ide_setting_mtx);
1138 spin_lock_irqsave(&ide_lock, flags);
1140 spin_unlock_irqrestore(&ide_lock, flags);
1141 mutex_unlock(&ide_setting_mtx);
1142 return err >= 0 ? put_user(err, (long __user *)arg) : err;
1145 if (bdev != bdev->bd_contains)
1148 if (!capable(CAP_SYS_ADMIN))
1151 mutex_lock(&ide_setting_mtx);
1152 err = setfunc(drive, arg);
1153 mutex_unlock(&ide_setting_mtx);
1159 EXPORT_SYMBOL(generic_ide_ioctl);
1162 * stridx() returns the offset of c within s,
1163 * or -1 if c is '\0' or not found within s.
1165 static int __init stridx (const char *s, char c)
1167 char *i = strchr(s, c);
1168 return (i && c) ? i - s : -1;
1172 * match_parm() does parsing for ide_setup():
1174 * 1. the first char of s must be '='.
1175 * 2. if the remainder matches one of the supplied keywords,
1176 * the index (1 based) of the keyword is negated and returned.
1177 * 3. if the remainder is a series of no more than max_vals numbers
1178 * separated by commas, the numbers are saved in vals[] and a
1179 * count of how many were saved is returned. Base10 is assumed,
1180 * and base16 is allowed when prefixed with "0x".
1181 * 4. otherwise, zero is returned.
1183 static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals)
1185 static const char *decimal = "0123456789";
1186 static const char *hex = "0123456789abcdef";
1191 * Try matching against the supplied keywords,
1192 * and return -(index+1) if we match one
1194 if (keywords != NULL) {
1195 for (i = 0; *keywords != NULL; ++i) {
1196 if (!strcmp(s, *keywords++))
1201 * Look for a series of no more than "max_vals"
1202 * numeric values separated by commas, in base10,
1203 * or base16 when prefixed with "0x".
1204 * Return a count of how many were found.
1206 for (n = 0; (i = stridx(decimal, *s)) >= 0;) {
1208 while ((i = stridx(decimal, *++s)) >= 0)
1209 vals[n] = (vals[n] * 10) + i;
1210 if (*s == 'x' && !vals[n]) {
1211 while ((i = stridx(hex, *++s)) >= 0)
1212 vals[n] = (vals[n] * 0x10) + i;
1214 if (++n == max_vals)
1216 if (*s == ',' || *s == ';')
1222 return 0; /* zero = nothing matched */
1225 extern int probe_ali14xx;
1226 extern int probe_umc8672;
1227 extern int probe_dtc2278;
1228 extern int probe_ht6560b;
1229 extern int probe_qd65xx;
1230 extern int cmd640_vlb;
1232 static int __initdata is_chipset_set[MAX_HWIFS];
1235 * ide_setup() gets called VERY EARLY during initialization,
1236 * to handle kernel "command line" strings beginning with "hdx=" or "ide".
1238 * Remember to update Documentation/ide.txt if you change something here.
1240 static int __init ide_setup(char *s)
1245 unsigned int hw, unit;
1246 const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1);
1247 const char max_hwif = '0' + (MAX_HWIFS - 1);
1250 if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */
1251 return 0; /* driver and not us */
1253 if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2))
1256 printk(KERN_INFO "ide_setup: %s", s);
1259 #ifdef CONFIG_BLK_DEV_IDEDOUBLER
1260 if (!strcmp(s, "ide=doubler")) {
1261 extern int ide_doubler;
1263 printk(" : Enabled support for IDE doublers\n");
1267 #endif /* CONFIG_BLK_DEV_IDEDOUBLER */
1269 if (!strcmp(s, "ide=nodma")) {
1270 printk(" : Prevented DMA\n");
1272 goto obsolete_option;
1275 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1276 if (!strcmp(s, "ide=reverse")) {
1277 ide_scan_direction = 1;
1278 printk(" : Enabled support for IDE inverse scan order.\n");
1283 #ifdef CONFIG_BLK_DEV_IDEACPI
1284 if (!strcmp(s, "ide=noacpi")) {
1285 //printk(" : Disable IDE ACPI support.\n");
1289 if (!strcmp(s, "ide=acpigtf")) {
1290 //printk(" : Enable IDE ACPI _GTF support.\n");
1294 if (!strcmp(s, "ide=acpionboot")) {
1295 //printk(" : Call IDE ACPI methods on boot.\n");
1296 ide_noacpionboot = 0;
1299 #endif /* CONFIG_BLK_DEV_IDEACPI */
1302 * Look for drive options: "hdx="
1304 if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) {
1305 const char *hd_words[] = {
1306 "none", "noprobe", "nowerr", "cdrom", "nodma",
1307 "autotune", "noautotune", "-8", "-9", "-10",
1308 "noflush", "remap", "remap63", "scsi", NULL };
1310 hw = unit / MAX_DRIVES;
1311 unit = unit % MAX_DRIVES;
1312 hwif = &ide_hwifs[hw];
1313 drive = &hwif->drives[unit];
1314 if (strncmp(s + 4, "ide-", 4) == 0) {
1315 strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req));
1318 switch (match_parm(&s[3], hd_words, vals, 3)) {
1319 case -1: /* "none" */
1320 case -2: /* "noprobe" */
1323 case -3: /* "nowerr" */
1324 drive->bad_wstat = BAD_R_STAT;
1327 case -4: /* "cdrom" */
1329 drive->media = ide_cdrom;
1330 /* an ATAPI device ignores DRDY */
1331 drive->ready_stat = 0;
1334 case -5: /* nodma */
1337 case -6: /* "autotune" */
1338 drive->autotune = IDE_TUNE_AUTO;
1339 goto obsolete_option;
1340 case -7: /* "noautotune" */
1341 drive->autotune = IDE_TUNE_NOAUTO;
1342 goto obsolete_option;
1343 case -11: /* noflush */
1346 case -12: /* "remap" */
1347 drive->remap_0_to_1 = 1;
1349 case -13: /* "remap63" */
1352 case -14: /* "scsi" */
1355 case 3: /* cyl,head,sect */
1356 drive->media = ide_disk;
1357 drive->ready_stat = READY_STAT;
1358 drive->cyl = drive->bios_cyl = vals[0];
1359 drive->head = drive->bios_head = vals[1];
1360 drive->sect = drive->bios_sect = vals[2];
1362 drive->forced_geom = 1;
1370 if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e')
1373 * Look for bus speed option: "idebus="
1375 if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') {
1376 if (match_parm(&s[6], NULL, vals, 1) != 1)
1378 if (vals[0] >= 20 && vals[0] <= 66) {
1379 idebus_parameter = vals[0];
1381 printk(" -- BAD BUS SPEED! Expected value from 20 to 66");
1385 * Look for interface options: "idex="
1387 if (s[3] >= '0' && s[3] <= max_hwif) {
1389 * Be VERY CAREFUL changing this: note hardcoded indexes below
1390 * (-8, -9, -10) are reserved to ease the hardcoding.
1392 static const char *ide_words[] = {
1393 "noprobe", "serialize", "minus3", "minus4",
1394 "reset", "minus6", "ata66", "minus8", "minus9",
1395 "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb",
1396 "dtc2278", "umc8672", "ali14xx", NULL };
1401 hwif = &ide_hwifs[hw];
1402 i = match_parm(&s[4], ide_words, vals, 3);
1405 * Cryptic check to ensure chipset not already set for hwif.
1406 * Note: we can't depend on hwif->chipset here.
1408 if ((i >= -18 && i <= -11) || (i > 0 && i <= 3)) {
1409 /* chipset already specified */
1410 if (is_chipset_set[hw])
1412 if (i > -18 && i <= -11) {
1413 /* these drivers are for "ide0=" only */
1416 /* chipset already specified for 2nd port */
1417 if (is_chipset_set[hw+1])
1420 is_chipset_set[hw] = 1;
1425 #ifdef CONFIG_BLK_DEV_ALI14XX
1426 case -17: /* "ali14xx" */
1430 #ifdef CONFIG_BLK_DEV_UMC8672
1431 case -16: /* "umc8672" */
1435 #ifdef CONFIG_BLK_DEV_DTC2278
1436 case -15: /* "dtc2278" */
1440 #ifdef CONFIG_BLK_DEV_CMD640
1441 case -14: /* "cmd640_vlb" */
1445 #ifdef CONFIG_BLK_DEV_HT6560B
1446 case -13: /* "ht6560b" */
1450 #ifdef CONFIG_BLK_DEV_QD65XX
1451 case -12: /* "qd65xx" */
1455 #ifdef CONFIG_BLK_DEV_4DRIVES
1456 case -11: /* "four" drives on one set of ports */
1458 ide_hwif_t *mate = &ide_hwifs[hw^1];
1459 mate->drives[0].select.all ^= 0x20;
1460 mate->drives[1].select.all ^= 0x20;
1461 hwif->chipset = mate->chipset = ide_4drives;
1462 mate->irq = hwif->irq;
1463 memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports));
1466 hwif->serialized = mate->serialized = 1;
1467 goto obsolete_option;
1469 #endif /* CONFIG_BLK_DEV_4DRIVES */
1470 case -10: /* minus10 */
1471 case -9: /* minus9 */
1472 case -8: /* minus8 */
1477 case -7: /* ata66 */
1478 #ifdef CONFIG_BLK_DEV_IDEPCI
1480 * Use ATA_CBL_PATA40_SHORT so drive side
1481 * cable detection is also overriden.
1483 hwif->cbl = ATA_CBL_PATA40_SHORT;
1484 goto obsolete_option;
1488 case -5: /* "reset" */
1490 goto obsolete_option;
1491 case -2: /* "serialize" */
1492 hwif->mate = &ide_hwifs[hw^1];
1493 hwif->mate->mate = hwif;
1494 hwif->serialized = hwif->mate->serialized = 1;
1495 goto obsolete_option;
1497 case -1: /* "noprobe" */
1502 vals[1] = vals[0] + 0x206; /* default ctl */
1503 case 2: /* base,ctl */
1504 vals[2] = 0; /* default irq = probe for it */
1505 case 3: /* base,ctl,irq */
1506 memset(&hwregs, 0, sizeof(hwregs));
1507 ide_init_hwif_ports(&hwregs, vals[0], vals[1], &hwif->irq);
1508 memcpy(hwif->io_ports, hwregs.io_ports, sizeof(hwif->io_ports));
1509 hwif->irq = vals[2];
1511 hwif->chipset = ide_forced;
1512 goto obsolete_option;
1514 case 0: goto bad_option;
1516 printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n");
1521 printk(" -- BAD OPTION\n");
1524 printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n");
1527 printk("-- NOT SUPPORTED ON ide%d", hw);
1533 EXPORT_SYMBOL(ide_lock);
1535 static int ide_bus_match(struct device *dev, struct device_driver *drv)
1540 static char *media_string(ide_drive_t *drive)
1542 switch (drive->media) {
1558 static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf)
1560 ide_drive_t *drive = to_ide_device(dev);
1561 return sprintf(buf, "%s\n", media_string(drive));
1564 static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf)
1566 ide_drive_t *drive = to_ide_device(dev);
1567 return sprintf(buf, "%s\n", drive->name);
1570 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
1572 ide_drive_t *drive = to_ide_device(dev);
1573 return sprintf(buf, "ide:m-%s\n", media_string(drive));
1576 static ssize_t model_show(struct device *dev, struct device_attribute *attr,
1579 ide_drive_t *drive = to_ide_device(dev);
1580 return sprintf(buf, "%s\n", drive->id->model);
1583 static ssize_t firmware_show(struct device *dev, struct device_attribute *attr,
1586 ide_drive_t *drive = to_ide_device(dev);
1587 return sprintf(buf, "%s\n", drive->id->fw_rev);
1590 static ssize_t serial_show(struct device *dev, struct device_attribute *attr,
1593 ide_drive_t *drive = to_ide_device(dev);
1594 return sprintf(buf, "%s\n", drive->id->serial_no);
1597 static struct device_attribute ide_dev_attrs[] = {
1599 __ATTR_RO(drivename),
1600 __ATTR_RO(modalias),
1602 __ATTR_RO(firmware),
1603 __ATTR(serial, 0400, serial_show, NULL),
1607 static int ide_uevent(struct device *dev, struct kobj_uevent_env *env)
1609 ide_drive_t *drive = to_ide_device(dev);
1611 add_uevent_var(env, "MEDIA=%s", media_string(drive));
1612 add_uevent_var(env, "DRIVENAME=%s", drive->name);
1613 add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive));
1617 static int generic_ide_probe(struct device *dev)
1619 ide_drive_t *drive = to_ide_device(dev);
1620 ide_driver_t *drv = to_ide_driver(dev->driver);
1622 return drv->probe ? drv->probe(drive) : -ENODEV;
1625 static int generic_ide_remove(struct device *dev)
1627 ide_drive_t *drive = to_ide_device(dev);
1628 ide_driver_t *drv = to_ide_driver(dev->driver);
1636 static void generic_ide_shutdown(struct device *dev)
1638 ide_drive_t *drive = to_ide_device(dev);
1639 ide_driver_t *drv = to_ide_driver(dev->driver);
1641 if (dev->driver && drv->shutdown)
1642 drv->shutdown(drive);
1645 struct bus_type ide_bus_type = {
1647 .match = ide_bus_match,
1648 .uevent = ide_uevent,
1649 .probe = generic_ide_probe,
1650 .remove = generic_ide_remove,
1651 .shutdown = generic_ide_shutdown,
1652 .dev_attrs = ide_dev_attrs,
1653 .suspend = generic_ide_suspend,
1654 .resume = generic_ide_resume,
1657 EXPORT_SYMBOL_GPL(ide_bus_type);
1660 * This is gets invoked once during initialization, to set *everything* up
1662 static int __init ide_init(void)
1666 printk(KERN_INFO "Uniform Multi-Platform E-IDE driver " REVISION "\n");
1667 system_bus_speed = ide_system_bus_speed();
1669 ret = bus_register(&ide_bus_type);
1671 printk(KERN_WARNING "IDE: bus_register error: %d\n", ret);
1683 static char *options = NULL;
1684 module_param(options, charp, 0);
1685 MODULE_LICENSE("GPL");
1687 static void __init parse_options (char *line)
1691 if (line == NULL || !*line)
1693 while ((line = next) != NULL) {
1694 if ((next = strchr(line,' ')) != NULL)
1696 if (!ide_setup(line))
1697 printk (KERN_INFO "Unknown option '%s'\n", line);
1701 int __init init_module (void)
1703 parse_options(options);
1707 void __exit cleanup_module (void)
1711 for (index = 0; index < MAX_HWIFS; ++index)
1712 ide_unregister(index);
1716 bus_unregister(&ide_bus_type);
1721 __setup("", ide_setup);
1723 module_init(ide_init);