2 * linux/drivers/ide/ide.c Version 7.00beta2 Mar 05 2003
4 * Copyright (C) 1994-1998 Linus Torvalds & authors (see below)
8 * Mostly written by Mark Lord <mlord@pobox.com>
9 * and Gadi Oxman <gadio@netvision.net.il>
10 * and Andre Hedrick <andre@linux-ide.org>
12 * See linux/MAINTAINERS for address of current maintainer.
14 * This is the multiple IDE interface driver, as evolved from hd.c.
15 * It supports up to MAX_HWIFS IDE interfaces, on one or more IRQs
17 * There can be up to two drives per interface, as per the ATA-2 spec.
23 * | It traverses the request-list, using interrupts to jump between functions.
24 * | As nearly all functions can be called within interrupts, we may not sleep.
25 * | Special care is recommended. Have Fun!
27 * | modified by Drew Eckhardt to check nr of hd's from the CMOS.
29 * | Thanks to Branko Lankester, lankeste@fwi.uva.nl, who found a bug
30 * | in the early extended-partition checks and added DM partitions.
32 * | Early work on error handling by Mika Liljeberg (liljeber@cs.Helsinki.FI).
34 * | IRQ-unmask, drive-id, multiple-mode, support for ">16 heads",
35 * | and general streamlining by Mark Lord (mlord@pobox.com).
37 * October, 1994 -- Complete line-by-line overhaul for linux 1.1.x, by:
39 * Mark Lord (mlord@pobox.com) (IDE Perf.Pkg)
40 * Delman Lee (delman@ieee.org) ("Mr. atdisk2")
41 * Scott Snyder (snyder@fnald0.fnal.gov) (ATAPI IDE cd-rom)
43 * This was a rewrite of just about everything from hd.c, though some original
44 * code is still sprinkled about. Think of it as a major evolution, with
45 * inspiration from lots of linux users, esp. hamish@zot.apana.org.au
48 #define REVISION "Revision: 7.00alpha2"
49 #define VERSION "Id: ide.c 7.00a2 20020906"
51 #define _IDE_C /* Tell ide.h it's really us */
53 #include <linux/module.h>
54 #include <linux/types.h>
55 #include <linux/string.h>
56 #include <linux/kernel.h>
57 #include <linux/timer.h>
59 #include <linux/interrupt.h>
60 #include <linux/major.h>
61 #include <linux/errno.h>
62 #include <linux/genhd.h>
63 #include <linux/blkpg.h>
64 #include <linux/slab.h>
65 #include <linux/init.h>
66 #include <linux/pci.h>
67 #include <linux/delay.h>
68 #include <linux/ide.h>
69 #include <linux/completion.h>
70 #include <linux/reboot.h>
71 #include <linux/cdrom.h>
72 #include <linux/seq_file.h>
73 #include <linux/device.h>
74 #include <linux/bitops.h>
76 #include <asm/byteorder.h>
78 #include <asm/uaccess.h>
82 /* default maximum number of failures */
83 #define IDE_DEFAULT_MAX_FAILURES 1
85 static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR,
86 IDE2_MAJOR, IDE3_MAJOR,
87 IDE4_MAJOR, IDE5_MAJOR,
88 IDE6_MAJOR, IDE7_MAJOR,
89 IDE8_MAJOR, IDE9_MAJOR };
91 static int idebus_parameter; /* holds the "idebus=" parameter */
92 static int system_bus_speed; /* holds what we think is VESA/PCI bus speed */
94 DEFINE_MUTEX(ide_cfg_mtx);
95 __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock);
97 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
98 static int ide_scan_direction; /* THIS was formerly 2.2.x pci=reverse */
103 #ifdef CONFIG_BLK_DEV_IDEACPI
105 int ide_noacpitfs = 1;
106 int ide_noacpionboot = 1;
110 * This is declared extern in ide.h, for access by other IDE modules:
112 ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */
114 EXPORT_SYMBOL(ide_hwifs);
117 * Do not even *think* about calling this!
119 static void init_hwif_data(ide_hwif_t *hwif, unsigned int index)
123 /* bulk initialize hwif & drive info with zeros */
124 memset(hwif, 0, sizeof(ide_hwif_t));
126 /* fill in any non-zero initial values */
128 hwif->major = ide_hwif_to_major[index];
133 hwif->name[3] = '0' + index;
135 hwif->bus_state = BUSSTATE_ON;
137 init_completion(&hwif->gendev_rel_comp);
139 default_hwif_iops(hwif);
140 default_hwif_transport(hwif);
141 for (unit = 0; unit < MAX_DRIVES; ++unit) {
142 ide_drive_t *drive = &hwif->drives[unit];
144 drive->media = ide_disk;
145 drive->select.all = (unit<<4)|0xa0;
148 drive->ready_stat = READY_STAT;
149 drive->bad_wstat = BAD_W_STAT;
150 drive->special.b.recalibrate = 1;
151 drive->special.b.set_geometry = 1;
152 drive->name[0] = 'h';
153 drive->name[1] = 'd';
154 drive->name[2] = 'a' + (index * MAX_DRIVES) + unit;
155 drive->max_failures = IDE_DEFAULT_MAX_FAILURES;
156 drive->using_dma = 0;
158 INIT_LIST_HEAD(&drive->list);
159 init_completion(&drive->gendev_rel_comp);
163 static void init_hwif_default(ide_hwif_t *hwif, unsigned int index)
167 memset(&hw, 0, sizeof(hw_regs_t));
169 ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, &hwif->irq);
171 memcpy(hwif->io_ports, hw.io_ports, sizeof(hw.io_ports));
173 hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET];
174 #ifdef CONFIG_BLK_DEV_HD
175 if (hwif->io_ports[IDE_DATA_OFFSET] == HD_DATA)
176 hwif->noprobe = 1; /* may be overridden by ide_setup() */
180 extern void ide_arm_init(void);
183 * init_ide_data() sets reasonable default values into all fields
184 * of all instances of the hwifs and drives, but only on the first call.
185 * Subsequent calls have no effect (they don't wipe out anything).
187 * This routine is normally called at driver initialization time,
188 * but may also be called MUCH earlier during kernel "command-line"
189 * parameter processing. As such, we cannot depend on any other parts
190 * of the kernel (such as memory allocation) to be functioning yet.
192 * This is too bad, as otherwise we could dynamically allocate the
193 * ide_drive_t structs as needed, rather than always consuming memory
194 * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them.
196 * FIXME: We should stuff the setup data into __init and copy the
197 * relevant hwifs/allocate them properly during boot.
199 #define MAGIC_COOKIE 0x12345678
200 static void __init init_ide_data (void)
204 static unsigned long magic_cookie = MAGIC_COOKIE;
206 if (magic_cookie != MAGIC_COOKIE)
207 return; /* already initialized */
210 /* Initialise all interface structures */
211 for (index = 0; index < MAX_HWIFS; ++index) {
212 hwif = &ide_hwifs[index];
213 init_hwif_data(hwif, index);
214 init_hwif_default(hwif, index);
215 #if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI)
217 ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]);
220 #ifdef CONFIG_IDE_ARM
226 * ide_system_bus_speed - guess bus speed
228 * ide_system_bus_speed() returns what we think is the system VESA/PCI
229 * bus speed (in MHz). This is used for calculating interface PIO timings.
230 * The default is 40 for known PCI systems, 50 otherwise.
231 * The "idebus=xx" parameter can be used to override this value.
232 * The actual value to be used is computed/displayed the first time
233 * through. Drivers should only use this as a last resort.
235 * Returns a guessed speed in MHz.
238 static int ide_system_bus_speed(void)
241 static struct pci_device_id pci_default[] = {
242 { PCI_DEVICE(PCI_ANY_ID, PCI_ANY_ID) },
246 #define pci_default 0
247 #endif /* CONFIG_PCI */
249 if (!system_bus_speed) {
250 if (idebus_parameter) {
251 /* user supplied value */
252 system_bus_speed = idebus_parameter;
253 } else if (pci_dev_present(pci_default)) {
254 /* safe default value for PCI */
255 system_bus_speed = 33;
257 /* safe default value for VESA and PCI */
258 system_bus_speed = 50;
260 printk(KERN_INFO "ide: Assuming %dMHz system bus speed "
261 "for PIO modes%s\n", system_bus_speed,
262 idebus_parameter ? "" : "; override with idebus=xx");
264 return system_bus_speed;
267 ide_hwif_t * ide_find_port(unsigned long base)
272 for (i = 0; i < MAX_HWIFS; i++) {
273 hwif = &ide_hwifs[i];
274 if (hwif->io_ports[IDE_DATA_OFFSET] == base)
278 for (i = 0; i < MAX_HWIFS; i++) {
279 hwif = &ide_hwifs[i];
280 if (hwif->io_ports[IDE_DATA_OFFSET] == 0)
289 EXPORT_SYMBOL_GPL(ide_find_port);
291 static struct resource* hwif_request_region(ide_hwif_t *hwif,
292 unsigned long addr, int num)
294 struct resource *res = request_region(addr, num, hwif->name);
297 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
298 hwif->name, addr, addr+num-1);
303 * ide_hwif_request_regions - request resources for IDE
304 * @hwif: interface to use
306 * Requests all the needed resources for an interface.
307 * Right now core IDE code does this work which is deeply wrong.
308 * MMIO leaves it to the controller driver,
309 * PIO will migrate this way over time.
312 int ide_hwif_request_regions(ide_hwif_t *hwif)
319 addr = hwif->io_ports[IDE_CONTROL_OFFSET];
320 if (addr && !hwif_request_region(hwif, addr, 1))
321 goto control_region_busy;
323 addr = hwif->io_ports[IDE_DATA_OFFSET];
324 if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) {
325 if (!hwif_request_region(hwif, addr, 8))
326 goto data_region_busy;
330 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
331 addr = hwif->io_ports[i];
332 if (!hwif_request_region(hwif, addr, 1)) {
334 release_region(addr, 1);
335 goto data_region_busy;
341 addr = hwif->io_ports[IDE_CONTROL_OFFSET];
343 release_region(addr, 1);
345 /* If any errors are return, we drop the hwif interface. */
350 * ide_hwif_release_regions - free IDE resources
352 * Note that we only release the standard ports,
353 * and do not even try to handle any extra ports
354 * allocated for weird IDE interface chipsets.
356 * Note also that we don't yet handle mmio resources here. More
357 * importantly our caller should be doing this so we need to
358 * restructure this as a helper function for drivers.
361 void ide_hwif_release_regions(ide_hwif_t *hwif)
367 if (hwif->io_ports[IDE_CONTROL_OFFSET])
368 release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1);
369 if (hwif->straight8) {
370 release_region(hwif->io_ports[IDE_DATA_OFFSET], 8);
373 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
374 if (hwif->io_ports[i])
375 release_region(hwif->io_ports[i], 1);
379 * ide_hwif_restore - restore hwif to template
380 * @hwif: hwif to update
381 * @tmp_hwif: template
383 * Restore hwif to a previous state by copying most settings
387 static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
389 hwif->hwgroup = tmp_hwif->hwgroup;
391 hwif->gendev.parent = tmp_hwif->gendev.parent;
393 hwif->proc = tmp_hwif->proc;
395 hwif->major = tmp_hwif->major;
396 hwif->straight8 = tmp_hwif->straight8;
397 hwif->bus_state = tmp_hwif->bus_state;
399 hwif->host_flags = tmp_hwif->host_flags;
401 hwif->pio_mask = tmp_hwif->pio_mask;
403 hwif->ultra_mask = tmp_hwif->ultra_mask;
404 hwif->mwdma_mask = tmp_hwif->mwdma_mask;
405 hwif->swdma_mask = tmp_hwif->swdma_mask;
407 hwif->cbl = tmp_hwif->cbl;
409 hwif->chipset = tmp_hwif->chipset;
410 hwif->hold = tmp_hwif->hold;
412 #ifdef CONFIG_BLK_DEV_IDEPCI
413 hwif->pci_dev = tmp_hwif->pci_dev;
414 hwif->cds = tmp_hwif->cds;
417 hwif->fixup = tmp_hwif->fixup;
419 hwif->set_pio_mode = tmp_hwif->set_pio_mode;
420 hwif->set_dma_mode = tmp_hwif->set_dma_mode;
421 hwif->mdma_filter = tmp_hwif->mdma_filter;
422 hwif->udma_filter = tmp_hwif->udma_filter;
423 hwif->selectproc = tmp_hwif->selectproc;
424 hwif->reset_poll = tmp_hwif->reset_poll;
425 hwif->pre_reset = tmp_hwif->pre_reset;
426 hwif->resetproc = tmp_hwif->resetproc;
427 hwif->intrproc = tmp_hwif->intrproc;
428 hwif->maskproc = tmp_hwif->maskproc;
429 hwif->quirkproc = tmp_hwif->quirkproc;
430 hwif->busproc = tmp_hwif->busproc;
432 hwif->ata_input_data = tmp_hwif->ata_input_data;
433 hwif->ata_output_data = tmp_hwif->ata_output_data;
434 hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes;
435 hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes;
437 hwif->dma_setup = tmp_hwif->dma_setup;
438 hwif->dma_exec_cmd = tmp_hwif->dma_exec_cmd;
439 hwif->dma_start = tmp_hwif->dma_start;
440 hwif->ide_dma_end = tmp_hwif->ide_dma_end;
441 hwif->ide_dma_on = tmp_hwif->ide_dma_on;
442 hwif->dma_off_quietly = tmp_hwif->dma_off_quietly;
443 hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq;
444 hwif->ide_dma_clear_irq = tmp_hwif->ide_dma_clear_irq;
445 hwif->dma_host_on = tmp_hwif->dma_host_on;
446 hwif->dma_host_off = tmp_hwif->dma_host_off;
447 hwif->dma_lost_irq = tmp_hwif->dma_lost_irq;
448 hwif->dma_timeout = tmp_hwif->dma_timeout;
450 hwif->OUTB = tmp_hwif->OUTB;
451 hwif->OUTBSYNC = tmp_hwif->OUTBSYNC;
452 hwif->OUTW = tmp_hwif->OUTW;
453 hwif->OUTSW = tmp_hwif->OUTSW;
454 hwif->OUTSL = tmp_hwif->OUTSL;
456 hwif->INB = tmp_hwif->INB;
457 hwif->INW = tmp_hwif->INW;
458 hwif->INSW = tmp_hwif->INSW;
459 hwif->INSL = tmp_hwif->INSL;
461 hwif->sg_max_nents = tmp_hwif->sg_max_nents;
463 hwif->mmio = tmp_hwif->mmio;
464 hwif->rqsize = tmp_hwif->rqsize;
466 #ifndef CONFIG_BLK_DEV_IDECS
467 hwif->irq = tmp_hwif->irq;
470 hwif->dma_base = tmp_hwif->dma_base;
471 hwif->dma_command = tmp_hwif->dma_command;
472 hwif->dma_vendor1 = tmp_hwif->dma_vendor1;
473 hwif->dma_status = tmp_hwif->dma_status;
474 hwif->dma_vendor3 = tmp_hwif->dma_vendor3;
475 hwif->dma_prdtable = tmp_hwif->dma_prdtable;
477 hwif->config_data = tmp_hwif->config_data;
478 hwif->select_data = tmp_hwif->select_data;
479 hwif->extra_base = tmp_hwif->extra_base;
480 hwif->extra_ports = tmp_hwif->extra_ports;
482 hwif->hwif_data = tmp_hwif->hwif_data;
486 * ide_unregister - free an IDE interface
487 * @index: index of interface (will change soon to a pointer)
489 * Perform the final unregister of an IDE interface. At the moment
490 * we don't refcount interfaces so this will also get split up.
493 * The caller must not hold the IDE locks
494 * The drive present/vanishing is not yet properly locked
495 * Take care with the callbacks. These have been split to avoid
496 * deadlocking the IDE layer. The shutdown callback is called
497 * before we take the lock and free resources. It is up to the
498 * caller to be sure there is no pending I/O here, and that
499 * the interface will not be reopened (present/vanishing locking
500 * isn't yet done BTW). After we commit to the final kill we
501 * call the cleanup callback with the ide locks held.
503 * Unregister restores the hwif structures to the default state.
504 * This is raving bonkers.
507 void ide_unregister(unsigned int index)
510 ide_hwif_t *hwif, *g;
511 static ide_hwif_t tmp_hwif; /* protected by ide_cfg_mtx */
512 ide_hwgroup_t *hwgroup;
513 int irq_count = 0, unit;
515 BUG_ON(index >= MAX_HWIFS);
517 BUG_ON(in_interrupt());
518 BUG_ON(irqs_disabled());
519 mutex_lock(&ide_cfg_mtx);
520 spin_lock_irq(&ide_lock);
521 hwif = &ide_hwifs[index];
524 for (unit = 0; unit < MAX_DRIVES; ++unit) {
525 drive = &hwif->drives[unit];
528 spin_unlock_irq(&ide_lock);
529 device_unregister(&drive->gendev);
530 wait_for_completion(&drive->gendev_rel_comp);
531 spin_lock_irq(&ide_lock);
535 spin_unlock_irq(&ide_lock);
537 ide_proc_unregister_port(hwif);
539 hwgroup = hwif->hwgroup;
541 * free the irq if we were the only hwif using it
545 if (g->irq == hwif->irq)
548 } while (g != hwgroup->hwif);
550 free_irq(hwif->irq, hwgroup);
552 spin_lock_irq(&ide_lock);
554 * Note that we only release the standard ports,
555 * and do not even try to handle any extra ports
556 * allocated for weird IDE interface chipsets.
558 ide_hwif_release_regions(hwif);
561 * Remove us from the hwgroup, and free
562 * the hwgroup if we were the only member
564 if (hwif->next == hwif) {
565 BUG_ON(hwgroup->hwif != hwif);
568 /* There is another interface in hwgroup.
569 * Unlink us, and set hwgroup->drive and ->hwif to
573 while (g->next != hwif)
575 g->next = hwif->next;
576 if (hwgroup->hwif == hwif) {
577 /* Chose a random hwif for hwgroup->hwif.
578 * It's guaranteed that there are no drives
579 * left in the hwgroup.
581 BUG_ON(hwgroup->drive != NULL);
584 BUG_ON(hwgroup->hwif == hwif);
587 /* More messed up locking ... */
588 spin_unlock_irq(&ide_lock);
589 device_unregister(&hwif->gendev);
590 wait_for_completion(&hwif->gendev_rel_comp);
593 * Remove us from the kernel's knowledge
595 blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS);
596 kfree(hwif->sg_table);
597 unregister_blkdev(hwif->major, hwif->name);
598 spin_lock_irq(&ide_lock);
600 if (hwif->dma_base) {
601 (void) ide_release_dma(hwif);
604 hwif->dma_command = 0;
605 hwif->dma_vendor1 = 0;
606 hwif->dma_status = 0;
607 hwif->dma_vendor3 = 0;
608 hwif->dma_prdtable = 0;
610 hwif->extra_base = 0;
611 hwif->extra_ports = 0;
614 /* copy original settings */
617 /* restore hwif data to pristine status */
618 init_hwif_data(hwif, index);
619 init_hwif_default(hwif, index);
621 ide_hwif_restore(hwif, &tmp_hwif);
624 spin_unlock_irq(&ide_lock);
625 mutex_unlock(&ide_cfg_mtx);
628 EXPORT_SYMBOL(ide_unregister);
632 * ide_setup_ports - set up IDE interface ports
633 * @hw: register descriptions
634 * @base: base register
635 * @offsets: table of register offsets
636 * @ctrl: control register
638 * @irq: interrupt lie
640 * Setup hw_regs_t structure described by parameters. You
641 * may set up the hw structure yourself OR use this routine to
642 * do it for you. This is basically a helper
646 void ide_setup_ports ( hw_regs_t *hw,
647 unsigned long base, int *offsets,
648 unsigned long ctrl, unsigned long intr,
649 ide_ack_intr_t *ack_intr,
651 * ide_io_ops_t *iops,
657 memset(hw, 0, sizeof(hw_regs_t));
658 for (i = 0; i < IDE_NR_PORTS; i++) {
659 if (offsets[i] == -1) {
661 case IDE_CONTROL_OFFSET:
662 hw->io_ports[i] = ctrl;
664 #if defined(CONFIG_AMIGA) || defined(CONFIG_MAC)
666 hw->io_ports[i] = intr;
668 #endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */
674 hw->io_ports[i] = base + offsets[i];
678 hw->ack_intr = ack_intr;
685 * ide_register_hw - register IDE interface
686 * @hw: hardware registers
687 * @fixup: fixup function
688 * @initializing: set while initializing built-in drivers
689 * @hwifp: pointer to returned hwif
691 * Register an IDE interface, specifying exactly the registers etc.
692 * Set init=1 iff calling before probes have taken place.
694 * Returns -1 on error.
697 int ide_register_hw(hw_regs_t *hw, void (*fixup)(ide_hwif_t *),
698 int initializing, ide_hwif_t **hwifp)
700 int index, retry = 1;
704 for (index = 0; index < MAX_HWIFS; ++index) {
705 hwif = &ide_hwifs[index];
706 if (hwif->io_ports[IDE_DATA_OFFSET] == hw->io_ports[IDE_DATA_OFFSET])
709 for (index = 0; index < MAX_HWIFS; ++index) {
710 hwif = &ide_hwifs[index];
713 if ((!hwif->present && !hwif->mate && !initializing) ||
714 (!hwif->io_ports[IDE_DATA_OFFSET] && initializing))
717 for (index = 0; index < MAX_HWIFS; index++)
718 ide_unregister(index);
723 ide_unregister(index);
724 else if (!hwif->hold) {
725 init_hwif_data(hwif, index);
726 init_hwif_default(hwif, index);
730 memcpy(hwif->io_ports, hw->io_ports, sizeof(hwif->io_ports));
734 hwif->chipset = hw->chipset;
735 hwif->gendev.parent = hw->dev;
736 hwif->ack_intr = hw->ack_intr;
738 if (initializing == 0) {
739 u8 idx[4] = { index, 0xff, 0xff, 0xff };
747 return (initializing || hwif->present) ? index : -1;
750 EXPORT_SYMBOL(ide_register_hw);
753 * Locks for IDE setting functionality
756 DEFINE_MUTEX(ide_setting_mtx);
758 EXPORT_SYMBOL_GPL(ide_setting_mtx);
761 * ide_spin_wait_hwgroup - wait for group
762 * @drive: drive in the group
764 * Wait for an IDE device group to go non busy and then return
765 * holding the ide_lock which guards the hwgroup->busy status
766 * and right to use it.
769 int ide_spin_wait_hwgroup (ide_drive_t *drive)
771 ide_hwgroup_t *hwgroup = HWGROUP(drive);
772 unsigned long timeout = jiffies + (3 * HZ);
774 spin_lock_irq(&ide_lock);
776 while (hwgroup->busy) {
777 unsigned long lflags;
778 spin_unlock_irq(&ide_lock);
779 local_irq_set(lflags);
780 if (time_after(jiffies, timeout)) {
781 local_irq_restore(lflags);
782 printk(KERN_ERR "%s: channel busy\n", drive->name);
785 local_irq_restore(lflags);
786 spin_lock_irq(&ide_lock);
791 EXPORT_SYMBOL(ide_spin_wait_hwgroup);
793 int set_io_32bit(ide_drive_t *drive, int arg)
795 if (drive->no_io_32bit)
798 if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1))
801 if (ide_spin_wait_hwgroup(drive))
804 drive->io_32bit = arg;
805 #ifdef CONFIG_BLK_DEV_DTC2278
806 if (HWIF(drive)->chipset == ide_dtc2278)
807 HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg;
808 #endif /* CONFIG_BLK_DEV_DTC2278 */
810 spin_unlock_irq(&ide_lock);
815 static int set_ksettings(ide_drive_t *drive, int arg)
817 if (arg < 0 || arg > 1)
820 if (ide_spin_wait_hwgroup(drive))
822 drive->keep_settings = arg;
823 spin_unlock_irq(&ide_lock);
828 int set_using_dma(ide_drive_t *drive, int arg)
830 #ifdef CONFIG_BLK_DEV_IDEDMA
831 ide_hwif_t *hwif = drive->hwif;
834 if (arg < 0 || arg > 1)
837 if (!drive->id || !(drive->id->capability & 1))
840 if (hwif->ide_dma_on == NULL)
844 if (ide_spin_wait_hwgroup(drive))
847 * set ->busy flag, unlock and let it ride
849 hwif->hwgroup->busy = 1;
850 spin_unlock_irq(&ide_lock);
855 hwif->dma_off_quietly(drive);
856 if (ide_set_dma(drive) || hwif->ide_dma_on(drive))
862 * lock, clear ->busy flag and unlock before leaving
864 spin_lock_irq(&ide_lock);
865 hwif->hwgroup->busy = 0;
866 spin_unlock_irq(&ide_lock);
870 if (arg < 0 || arg > 1)
877 int set_pio_mode(ide_drive_t *drive, int arg)
881 if (arg < 0 || arg > 255)
884 if (drive->hwif->set_pio_mode == NULL)
887 if (drive->special.b.set_tune)
889 ide_init_drive_cmd(&rq);
890 drive->tune_req = (u8) arg;
891 drive->special.b.set_tune = 1;
892 (void) ide_do_drive_cmd(drive, &rq, ide_wait);
896 static int set_unmaskirq(ide_drive_t *drive, int arg)
898 if (drive->no_unmask)
901 if (arg < 0 || arg > 1)
904 if (ide_spin_wait_hwgroup(drive))
907 spin_unlock_irq(&ide_lock);
913 * system_bus_clock - clock guess
915 * External version of the bus clock guess used by very old IDE drivers
916 * for things like VLB timings. Should not be used.
919 int system_bus_clock (void)
921 return((int) ((!system_bus_speed) ? ide_system_bus_speed() : system_bus_speed ));
924 EXPORT_SYMBOL(system_bus_clock);
926 static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
928 ide_drive_t *drive = dev->driver_data;
929 ide_hwif_t *hwif = HWIF(drive);
931 struct request_pm_state rqpm;
935 /* Call ACPI _GTM only once */
936 if (!(drive->dn % 2))
937 ide_acpi_get_timing(hwif);
939 memset(&rq, 0, sizeof(rq));
940 memset(&rqpm, 0, sizeof(rqpm));
941 memset(&args, 0, sizeof(args));
942 rq.cmd_type = REQ_TYPE_PM_SUSPEND;
945 rqpm.pm_step = ide_pm_state_start_suspend;
946 if (mesg.event == PM_EVENT_PRETHAW)
947 mesg.event = PM_EVENT_FREEZE;
948 rqpm.pm_state = mesg.event;
950 ret = ide_do_drive_cmd(drive, &rq, ide_wait);
951 /* only call ACPI _PS3 after both drivers are suspended */
952 if (!ret && (((drive->dn % 2) && hwif->drives[0].present
953 && hwif->drives[1].present)
954 || !hwif->drives[0].present
955 || !hwif->drives[1].present))
956 ide_acpi_set_state(hwif, 0);
960 static int generic_ide_resume(struct device *dev)
962 ide_drive_t *drive = dev->driver_data;
963 ide_hwif_t *hwif = HWIF(drive);
965 struct request_pm_state rqpm;
969 /* Call ACPI _STM only once */
970 if (!(drive->dn % 2)) {
971 ide_acpi_set_state(hwif, 1);
972 ide_acpi_push_timing(hwif);
975 ide_acpi_exec_tfs(drive);
977 memset(&rq, 0, sizeof(rq));
978 memset(&rqpm, 0, sizeof(rqpm));
979 memset(&args, 0, sizeof(args));
980 rq.cmd_type = REQ_TYPE_PM_RESUME;
983 rqpm.pm_step = ide_pm_state_start_resume;
984 rqpm.pm_state = PM_EVENT_ON;
986 err = ide_do_drive_cmd(drive, &rq, ide_head_wait);
988 if (err == 0 && dev->driver) {
989 ide_driver_t *drv = to_ide_driver(dev->driver);
998 int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev,
999 unsigned int cmd, unsigned long arg)
1001 unsigned long flags;
1003 void __user *p = (void __user *)arg;
1004 int err = 0, (*setfunc)(ide_drive_t *, int);
1008 case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val;
1009 case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val;
1010 case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val;
1011 case HDIO_GET_DMA: val = &drive->using_dma; goto read_val;
1012 case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val;
1013 case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val;
1014 case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val;
1015 case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val;
1016 case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val;
1020 case HDIO_OBSOLETE_IDENTITY:
1021 case HDIO_GET_IDENTITY:
1022 if (bdev != bdev->bd_contains)
1024 if (drive->id_read == 0)
1026 if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142))
1031 return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP |
1032 drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP |
1033 drive->nice0 << IDE_NICE_0 |
1034 drive->nice1 << IDE_NICE_1 |
1035 drive->nice2 << IDE_NICE_2,
1036 (long __user *) arg);
1038 #ifdef CONFIG_IDE_TASK_IOCTL
1039 case HDIO_DRIVE_TASKFILE:
1040 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
1042 switch(drive->media) {
1044 return ide_taskfile_ioctl(drive, cmd, arg);
1048 #endif /* CONFIG_IDE_TASK_IOCTL */
1050 case HDIO_DRIVE_CMD:
1051 if (!capable(CAP_SYS_RAWIO))
1053 return ide_cmd_ioctl(drive, cmd, arg);
1055 case HDIO_DRIVE_TASK:
1056 if (!capable(CAP_SYS_RAWIO))
1058 return ide_task_ioctl(drive, cmd, arg);
1060 case HDIO_SCAN_HWIF:
1064 if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1065 if (copy_from_user(args, p, 3 * sizeof(int)))
1067 memset(&hw, 0, sizeof(hw));
1068 ide_init_hwif_ports(&hw, (unsigned long) args[0],
1069 (unsigned long) args[1], NULL);
1071 if (ide_register_hw(&hw, NULL, 0, NULL) == -1)
1075 case HDIO_UNREGISTER_HWIF:
1076 if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1077 /* (arg > MAX_HWIFS) checked in function */
1078 ide_unregister(arg);
1081 if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1082 if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1))))
1084 drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1;
1085 drv = *(ide_driver_t **)bdev->bd_disk->private_data;
1086 if (drive->dsc_overlap && !drv->supports_dsc_overlap) {
1087 drive->dsc_overlap = 0;
1090 drive->nice1 = (arg >> IDE_NICE_1) & 1;
1092 case HDIO_DRIVE_RESET:
1094 unsigned long flags;
1095 if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1098 * Abort the current command on the
1099 * group if there is one, taking
1100 * care not to allow anything else
1101 * to be queued and to die on the
1102 * spot if we miss one somehow
1105 spin_lock_irqsave(&ide_lock, flags);
1107 if (HWGROUP(drive)->resetting) {
1108 spin_unlock_irqrestore(&ide_lock, flags);
1112 ide_abort(drive, "drive reset");
1114 BUG_ON(HWGROUP(drive)->handler);
1116 /* Ensure nothing gets queued after we
1117 drop the lock. Reset will clear the busy */
1119 HWGROUP(drive)->busy = 1;
1120 spin_unlock_irqrestore(&ide_lock, flags);
1121 (void) ide_do_reset(drive);
1126 case HDIO_GET_BUSSTATE:
1127 if (!capable(CAP_SYS_ADMIN))
1129 if (put_user(HWIF(drive)->bus_state, (long __user *)arg))
1133 case HDIO_SET_BUSSTATE:
1134 if (!capable(CAP_SYS_ADMIN))
1136 if (HWIF(drive)->busproc)
1137 return HWIF(drive)->busproc(drive, (int)arg);
1144 mutex_lock(&ide_setting_mtx);
1145 spin_lock_irqsave(&ide_lock, flags);
1147 spin_unlock_irqrestore(&ide_lock, flags);
1148 mutex_unlock(&ide_setting_mtx);
1149 return err >= 0 ? put_user(err, (long __user *)arg) : err;
1152 if (bdev != bdev->bd_contains)
1155 if (!capable(CAP_SYS_ADMIN))
1158 mutex_lock(&ide_setting_mtx);
1159 err = setfunc(drive, arg);
1160 mutex_unlock(&ide_setting_mtx);
1166 EXPORT_SYMBOL(generic_ide_ioctl);
1169 * stridx() returns the offset of c within s,
1170 * or -1 if c is '\0' or not found within s.
1172 static int __init stridx (const char *s, char c)
1174 char *i = strchr(s, c);
1175 return (i && c) ? i - s : -1;
1179 * match_parm() does parsing for ide_setup():
1181 * 1. the first char of s must be '='.
1182 * 2. if the remainder matches one of the supplied keywords,
1183 * the index (1 based) of the keyword is negated and returned.
1184 * 3. if the remainder is a series of no more than max_vals numbers
1185 * separated by commas, the numbers are saved in vals[] and a
1186 * count of how many were saved is returned. Base10 is assumed,
1187 * and base16 is allowed when prefixed with "0x".
1188 * 4. otherwise, zero is returned.
1190 static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals)
1192 static const char *decimal = "0123456789";
1193 static const char *hex = "0123456789abcdef";
1198 * Try matching against the supplied keywords,
1199 * and return -(index+1) if we match one
1201 if (keywords != NULL) {
1202 for (i = 0; *keywords != NULL; ++i) {
1203 if (!strcmp(s, *keywords++))
1208 * Look for a series of no more than "max_vals"
1209 * numeric values separated by commas, in base10,
1210 * or base16 when prefixed with "0x".
1211 * Return a count of how many were found.
1213 for (n = 0; (i = stridx(decimal, *s)) >= 0;) {
1215 while ((i = stridx(decimal, *++s)) >= 0)
1216 vals[n] = (vals[n] * 10) + i;
1217 if (*s == 'x' && !vals[n]) {
1218 while ((i = stridx(hex, *++s)) >= 0)
1219 vals[n] = (vals[n] * 0x10) + i;
1221 if (++n == max_vals)
1223 if (*s == ',' || *s == ';')
1229 return 0; /* zero = nothing matched */
1232 #ifdef CONFIG_BLK_DEV_ALI14XX
1233 extern int probe_ali14xx;
1234 extern int ali14xx_init(void);
1236 #ifdef CONFIG_BLK_DEV_UMC8672
1237 extern int probe_umc8672;
1238 extern int umc8672_init(void);
1240 #ifdef CONFIG_BLK_DEV_DTC2278
1241 extern int probe_dtc2278;
1242 extern int dtc2278_init(void);
1244 #ifdef CONFIG_BLK_DEV_HT6560B
1245 extern int probe_ht6560b;
1246 extern int ht6560b_init(void);
1248 #ifdef CONFIG_BLK_DEV_QD65XX
1249 extern int probe_qd65xx;
1250 extern int qd65xx_init(void);
1253 static int __initdata is_chipset_set[MAX_HWIFS];
1256 * ide_setup() gets called VERY EARLY during initialization,
1257 * to handle kernel "command line" strings beginning with "hdx=" or "ide".
1259 * Remember to update Documentation/ide.txt if you change something here.
1261 static int __init ide_setup(char *s)
1266 unsigned int hw, unit;
1267 const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1);
1268 const char max_hwif = '0' + (MAX_HWIFS - 1);
1271 if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */
1272 return 0; /* driver and not us */
1274 if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2))
1277 printk(KERN_INFO "ide_setup: %s", s);
1280 #ifdef CONFIG_BLK_DEV_IDEDOUBLER
1281 if (!strcmp(s, "ide=doubler")) {
1282 extern int ide_doubler;
1284 printk(" : Enabled support for IDE doublers\n");
1288 #endif /* CONFIG_BLK_DEV_IDEDOUBLER */
1290 if (!strcmp(s, "ide=nodma")) {
1291 printk(" : Prevented DMA\n");
1293 goto obsolete_option;
1296 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1297 if (!strcmp(s, "ide=reverse")) {
1298 ide_scan_direction = 1;
1299 printk(" : Enabled support for IDE inverse scan order.\n");
1304 #ifdef CONFIG_BLK_DEV_IDEACPI
1305 if (!strcmp(s, "ide=noacpi")) {
1306 //printk(" : Disable IDE ACPI support.\n");
1310 if (!strcmp(s, "ide=acpigtf")) {
1311 //printk(" : Enable IDE ACPI _GTF support.\n");
1315 if (!strcmp(s, "ide=acpionboot")) {
1316 //printk(" : Call IDE ACPI methods on boot.\n");
1317 ide_noacpionboot = 0;
1320 #endif /* CONFIG_BLK_DEV_IDEACPI */
1323 * Look for drive options: "hdx="
1325 if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) {
1326 const char *hd_words[] = {
1327 "none", "noprobe", "nowerr", "cdrom", "nodma",
1328 "autotune", "noautotune", "minus8", "swapdata", "bswap",
1329 "noflush", "remap", "remap63", "scsi", NULL };
1331 hw = unit / MAX_DRIVES;
1332 unit = unit % MAX_DRIVES;
1333 hwif = &ide_hwifs[hw];
1334 drive = &hwif->drives[unit];
1335 if (strncmp(s + 4, "ide-", 4) == 0) {
1336 strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req));
1339 switch (match_parm(&s[3], hd_words, vals, 3)) {
1340 case -1: /* "none" */
1341 case -2: /* "noprobe" */
1344 case -3: /* "nowerr" */
1345 drive->bad_wstat = BAD_R_STAT;
1348 case -4: /* "cdrom" */
1350 drive->media = ide_cdrom;
1351 /* an ATAPI device ignores DRDY */
1352 drive->ready_stat = 0;
1355 case -5: /* nodma */
1358 case -6: /* "autotune" */
1359 drive->autotune = IDE_TUNE_AUTO;
1360 goto obsolete_option;
1361 case -7: /* "noautotune" */
1362 drive->autotune = IDE_TUNE_NOAUTO;
1363 goto obsolete_option;
1364 case -9: /* "swapdata" */
1365 case -10: /* "bswap" */
1368 case -11: /* noflush */
1371 case -12: /* "remap" */
1372 drive->remap_0_to_1 = 1;
1374 case -13: /* "remap63" */
1377 case -14: /* "scsi" */
1380 case 3: /* cyl,head,sect */
1381 drive->media = ide_disk;
1382 drive->ready_stat = READY_STAT;
1383 drive->cyl = drive->bios_cyl = vals[0];
1384 drive->head = drive->bios_head = vals[1];
1385 drive->sect = drive->bios_sect = vals[2];
1387 drive->forced_geom = 1;
1395 if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e')
1398 * Look for bus speed option: "idebus="
1400 if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') {
1401 if (match_parm(&s[6], NULL, vals, 1) != 1)
1403 if (vals[0] >= 20 && vals[0] <= 66) {
1404 idebus_parameter = vals[0];
1406 printk(" -- BAD BUS SPEED! Expected value from 20 to 66");
1410 * Look for interface options: "idex="
1412 if (s[3] >= '0' && s[3] <= max_hwif) {
1414 * Be VERY CAREFUL changing this: note hardcoded indexes below
1415 * (-8, -9, -10) are reserved to ease the hardcoding.
1417 static const char *ide_words[] = {
1418 "noprobe", "serialize", "minus3", "minus4",
1419 "reset", "minus6", "ata66", "minus8", "minus9",
1420 "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb",
1421 "dtc2278", "umc8672", "ali14xx", NULL };
1426 hwif = &ide_hwifs[hw];
1427 i = match_parm(&s[4], ide_words, vals, 3);
1430 * Cryptic check to ensure chipset not already set for hwif.
1431 * Note: we can't depend on hwif->chipset here.
1433 if ((i >= -18 && i <= -11) || (i > 0 && i <= 3)) {
1434 /* chipset already specified */
1435 if (is_chipset_set[hw])
1437 if (i > -18 && i <= -11) {
1438 /* these drivers are for "ide0=" only */
1441 /* chipset already specified for 2nd port */
1442 if (is_chipset_set[hw+1])
1445 is_chipset_set[hw] = 1;
1450 #ifdef CONFIG_BLK_DEV_ALI14XX
1451 case -17: /* "ali14xx" */
1455 #ifdef CONFIG_BLK_DEV_UMC8672
1456 case -16: /* "umc8672" */
1460 #ifdef CONFIG_BLK_DEV_DTC2278
1461 case -15: /* "dtc2278" */
1465 #ifdef CONFIG_BLK_DEV_CMD640
1466 case -14: /* "cmd640_vlb" */
1468 extern int cmd640_vlb; /* flag for cmd640.c */
1473 #ifdef CONFIG_BLK_DEV_HT6560B
1474 case -13: /* "ht6560b" */
1478 #ifdef CONFIG_BLK_DEV_QD65XX
1479 case -12: /* "qd65xx" */
1483 #ifdef CONFIG_BLK_DEV_4DRIVES
1484 case -11: /* "four" drives on one set of ports */
1486 ide_hwif_t *mate = &ide_hwifs[hw^1];
1487 mate->drives[0].select.all ^= 0x20;
1488 mate->drives[1].select.all ^= 0x20;
1489 hwif->chipset = mate->chipset = ide_4drives;
1490 mate->irq = hwif->irq;
1491 memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports));
1494 hwif->serialized = mate->serialized = 1;
1495 goto obsolete_option;
1497 #endif /* CONFIG_BLK_DEV_4DRIVES */
1498 case -10: /* minus10 */
1499 case -9: /* minus9 */
1500 case -8: /* minus8 */
1505 case -7: /* ata66 */
1506 #ifdef CONFIG_BLK_DEV_IDEPCI
1508 * Use ATA_CBL_PATA40_SHORT so drive side
1509 * cable detection is also overriden.
1511 hwif->cbl = ATA_CBL_PATA40_SHORT;
1512 goto obsolete_option;
1516 case -5: /* "reset" */
1518 goto obsolete_option;
1519 case -2: /* "serialize" */
1520 hwif->mate = &ide_hwifs[hw^1];
1521 hwif->mate->mate = hwif;
1522 hwif->serialized = hwif->mate->serialized = 1;
1523 goto obsolete_option;
1525 case -1: /* "noprobe" */
1530 vals[1] = vals[0] + 0x206; /* default ctl */
1531 case 2: /* base,ctl */
1532 vals[2] = 0; /* default irq = probe for it */
1533 case 3: /* base,ctl,irq */
1534 memset(&hwregs, 0, sizeof(hwregs));
1535 ide_init_hwif_ports(&hwregs, vals[0], vals[1], &hwif->irq);
1536 memcpy(hwif->io_ports, hwregs.io_ports, sizeof(hwif->io_ports));
1537 hwif->irq = vals[2];
1539 hwif->chipset = ide_forced;
1540 goto obsolete_option;
1542 case 0: goto bad_option;
1544 printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n");
1549 printk(" -- BAD OPTION\n");
1552 printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n");
1555 printk("-- NOT SUPPORTED ON ide%d", hw);
1561 extern void __init pnpide_init(void);
1562 extern void __exit pnpide_exit(void);
1563 extern void __init h8300_ide_init(void);
1566 * probe_for_hwifs() finds/initializes "known" IDE interfaces
1568 static void __init probe_for_hwifs (void)
1570 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1571 ide_scan_pcibus(ide_scan_direction);
1574 #ifdef CONFIG_ETRAX_IDE
1576 extern void init_e100_ide(void);
1579 #endif /* CONFIG_ETRAX_IDE */
1580 #ifdef CONFIG_BLK_DEV_CMD640
1582 extern void ide_probe_for_cmd640x(void);
1583 ide_probe_for_cmd640x();
1585 #endif /* CONFIG_BLK_DEV_CMD640 */
1586 #ifdef CONFIG_BLK_DEV_IDE_PMAC
1588 extern int pmac_ide_probe(void);
1589 (void)pmac_ide_probe();
1591 #endif /* CONFIG_BLK_DEV_IDE_PMAC */
1592 #ifdef CONFIG_BLK_DEV_GAYLE
1594 extern void gayle_init(void);
1597 #endif /* CONFIG_BLK_DEV_GAYLE */
1598 #ifdef CONFIG_BLK_DEV_FALCON_IDE
1600 extern void falconide_init(void);
1603 #endif /* CONFIG_BLK_DEV_FALCON_IDE */
1604 #ifdef CONFIG_BLK_DEV_MAC_IDE
1606 extern void macide_init(void);
1609 #endif /* CONFIG_BLK_DEV_MAC_IDE */
1610 #ifdef CONFIG_BLK_DEV_Q40IDE
1612 extern void q40ide_init(void);
1615 #endif /* CONFIG_BLK_DEV_Q40IDE */
1616 #ifdef CONFIG_BLK_DEV_BUDDHA
1618 extern void buddha_init(void);
1621 #endif /* CONFIG_BLK_DEV_BUDDHA */
1622 #ifdef CONFIG_BLK_DEV_IDEPNP
1634 EXPORT_SYMBOL(ide_lock);
1636 static int ide_bus_match(struct device *dev, struct device_driver *drv)
1641 static char *media_string(ide_drive_t *drive)
1643 switch (drive->media) {
1659 static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf)
1661 ide_drive_t *drive = to_ide_device(dev);
1662 return sprintf(buf, "%s\n", media_string(drive));
1665 static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf)
1667 ide_drive_t *drive = to_ide_device(dev);
1668 return sprintf(buf, "%s\n", drive->name);
1671 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
1673 ide_drive_t *drive = to_ide_device(dev);
1674 return sprintf(buf, "ide:m-%s\n", media_string(drive));
1677 static ssize_t model_show(struct device *dev, struct device_attribute *attr,
1680 ide_drive_t *drive = to_ide_device(dev);
1681 return sprintf(buf, "%s\n", drive->id->model);
1684 static ssize_t firmware_show(struct device *dev, struct device_attribute *attr,
1687 ide_drive_t *drive = to_ide_device(dev);
1688 return sprintf(buf, "%s\n", drive->id->fw_rev);
1691 static ssize_t serial_show(struct device *dev, struct device_attribute *attr,
1694 ide_drive_t *drive = to_ide_device(dev);
1695 return sprintf(buf, "%s\n", drive->id->serial_no);
1698 static struct device_attribute ide_dev_attrs[] = {
1700 __ATTR_RO(drivename),
1701 __ATTR_RO(modalias),
1703 __ATTR_RO(firmware),
1704 __ATTR(serial, 0400, serial_show, NULL),
1708 static int ide_uevent(struct device *dev, struct kobj_uevent_env *env)
1710 ide_drive_t *drive = to_ide_device(dev);
1712 add_uevent_var(env, "MEDIA=%s", media_string(drive));
1713 add_uevent_var(env, "DRIVENAME=%s", drive->name);
1714 add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive));
1718 static int generic_ide_probe(struct device *dev)
1720 ide_drive_t *drive = to_ide_device(dev);
1721 ide_driver_t *drv = to_ide_driver(dev->driver);
1723 return drv->probe ? drv->probe(drive) : -ENODEV;
1726 static int generic_ide_remove(struct device *dev)
1728 ide_drive_t *drive = to_ide_device(dev);
1729 ide_driver_t *drv = to_ide_driver(dev->driver);
1737 static void generic_ide_shutdown(struct device *dev)
1739 ide_drive_t *drive = to_ide_device(dev);
1740 ide_driver_t *drv = to_ide_driver(dev->driver);
1742 if (dev->driver && drv->shutdown)
1743 drv->shutdown(drive);
1746 struct bus_type ide_bus_type = {
1748 .match = ide_bus_match,
1749 .uevent = ide_uevent,
1750 .probe = generic_ide_probe,
1751 .remove = generic_ide_remove,
1752 .shutdown = generic_ide_shutdown,
1753 .dev_attrs = ide_dev_attrs,
1754 .suspend = generic_ide_suspend,
1755 .resume = generic_ide_resume,
1758 EXPORT_SYMBOL_GPL(ide_bus_type);
1761 * This is gets invoked once during initialization, to set *everything* up
1763 static int __init ide_init(void)
1767 printk(KERN_INFO "Uniform Multi-Platform E-IDE driver " REVISION "\n");
1768 system_bus_speed = ide_system_bus_speed();
1770 ret = bus_register(&ide_bus_type);
1772 printk(KERN_WARNING "IDE: bus_register error: %d\n", ret);
1780 #ifdef CONFIG_BLK_DEV_ALI14XX
1782 (void)ali14xx_init();
1784 #ifdef CONFIG_BLK_DEV_UMC8672
1786 (void)umc8672_init();
1788 #ifdef CONFIG_BLK_DEV_DTC2278
1790 (void)dtc2278_init();
1792 #ifdef CONFIG_BLK_DEV_HT6560B
1794 (void)ht6560b_init();
1796 #ifdef CONFIG_BLK_DEV_QD65XX
1798 (void)qd65xx_init();
1801 /* Probe for special PCI and other "known" interface chipsets. */
1808 static char *options = NULL;
1809 module_param(options, charp, 0);
1810 MODULE_LICENSE("GPL");
1812 static void __init parse_options (char *line)
1816 if (line == NULL || !*line)
1818 while ((line = next) != NULL) {
1819 if ((next = strchr(line,' ')) != NULL)
1821 if (!ide_setup(line))
1822 printk (KERN_INFO "Unknown option '%s'\n", line);
1826 int __init init_module (void)
1828 parse_options(options);
1832 void __exit cleanup_module (void)
1836 for (index = 0; index < MAX_HWIFS; ++index)
1837 ide_unregister(index);
1839 #ifdef CONFIG_BLK_DEV_IDEPNP
1845 bus_unregister(&ide_bus_type);
1850 __setup("", ide_setup);
1852 module_init(ide_init);