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->hw, &hw, sizeof(hw));
172 memcpy(hwif->io_ports, hw.io_ports, sizeof(hw.io_ports));
174 hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET];
175 #ifdef CONFIG_BLK_DEV_HD
176 if (hwif->io_ports[IDE_DATA_OFFSET] == HD_DATA)
177 hwif->noprobe = 1; /* may be overridden by ide_setup() */
181 extern void ide_arm_init(void);
184 * init_ide_data() sets reasonable default values into all fields
185 * of all instances of the hwifs and drives, but only on the first call.
186 * Subsequent calls have no effect (they don't wipe out anything).
188 * This routine is normally called at driver initialization time,
189 * but may also be called MUCH earlier during kernel "command-line"
190 * parameter processing. As such, we cannot depend on any other parts
191 * of the kernel (such as memory allocation) to be functioning yet.
193 * This is too bad, as otherwise we could dynamically allocate the
194 * ide_drive_t structs as needed, rather than always consuming memory
195 * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them.
197 * FIXME: We should stuff the setup data into __init and copy the
198 * relevant hwifs/allocate them properly during boot.
200 #define MAGIC_COOKIE 0x12345678
201 static void __init init_ide_data (void)
205 static unsigned long magic_cookie = MAGIC_COOKIE;
207 if (magic_cookie != MAGIC_COOKIE)
208 return; /* already initialized */
211 /* Initialise all interface structures */
212 for (index = 0; index < MAX_HWIFS; ++index) {
213 hwif = &ide_hwifs[index];
214 init_hwif_data(hwif, index);
215 init_hwif_default(hwif, index);
216 #if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI)
217 hwif->irq = hwif->hw.irq =
218 ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]);
221 #ifdef CONFIG_IDE_ARM
227 * ide_system_bus_speed - guess bus speed
229 * ide_system_bus_speed() returns what we think is the system VESA/PCI
230 * bus speed (in MHz). This is used for calculating interface PIO timings.
231 * The default is 40 for known PCI systems, 50 otherwise.
232 * The "idebus=xx" parameter can be used to override this value.
233 * The actual value to be used is computed/displayed the first time
234 * through. Drivers should only use this as a last resort.
236 * Returns a guessed speed in MHz.
239 static int ide_system_bus_speed(void)
242 static struct pci_device_id pci_default[] = {
243 { PCI_DEVICE(PCI_ANY_ID, PCI_ANY_ID) },
247 #define pci_default 0
248 #endif /* CONFIG_PCI */
250 if (!system_bus_speed) {
251 if (idebus_parameter) {
252 /* user supplied value */
253 system_bus_speed = idebus_parameter;
254 } else if (pci_dev_present(pci_default)) {
255 /* safe default value for PCI */
256 system_bus_speed = 33;
258 /* safe default value for VESA and PCI */
259 system_bus_speed = 50;
261 printk(KERN_INFO "ide: Assuming %dMHz system bus speed "
262 "for PIO modes%s\n", system_bus_speed,
263 idebus_parameter ? "" : "; override with idebus=xx");
265 return system_bus_speed;
268 static struct resource* hwif_request_region(ide_hwif_t *hwif,
269 unsigned long addr, int num)
271 struct resource *res = request_region(addr, num, hwif->name);
274 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
275 hwif->name, addr, addr+num-1);
280 * ide_hwif_request_regions - request resources for IDE
281 * @hwif: interface to use
283 * Requests all the needed resources for an interface.
284 * Right now core IDE code does this work which is deeply wrong.
285 * MMIO leaves it to the controller driver,
286 * PIO will migrate this way over time.
289 int ide_hwif_request_regions(ide_hwif_t *hwif)
296 addr = hwif->io_ports[IDE_CONTROL_OFFSET];
297 if (addr && !hwif_request_region(hwif, addr, 1))
298 goto control_region_busy;
300 addr = hwif->io_ports[IDE_DATA_OFFSET];
301 if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) {
302 if (!hwif_request_region(hwif, addr, 8))
303 goto data_region_busy;
307 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
308 addr = hwif->io_ports[i];
309 if (!hwif_request_region(hwif, addr, 1)) {
311 release_region(addr, 1);
312 goto data_region_busy;
318 addr = hwif->io_ports[IDE_CONTROL_OFFSET];
320 release_region(addr, 1);
322 /* If any errors are return, we drop the hwif interface. */
327 * ide_hwif_release_regions - free IDE resources
329 * Note that we only release the standard ports,
330 * and do not even try to handle any extra ports
331 * allocated for weird IDE interface chipsets.
333 * Note also that we don't yet handle mmio resources here. More
334 * importantly our caller should be doing this so we need to
335 * restructure this as a helper function for drivers.
338 void ide_hwif_release_regions(ide_hwif_t *hwif)
344 if (hwif->io_ports[IDE_CONTROL_OFFSET])
345 release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1);
346 if (hwif->straight8) {
347 release_region(hwif->io_ports[IDE_DATA_OFFSET], 8);
350 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
351 if (hwif->io_ports[i])
352 release_region(hwif->io_ports[i], 1);
356 * ide_hwif_restore - restore hwif to template
357 * @hwif: hwif to update
358 * @tmp_hwif: template
360 * Restore hwif to a previous state by copying most settings
364 static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
366 hwif->hwgroup = tmp_hwif->hwgroup;
368 hwif->gendev.parent = tmp_hwif->gendev.parent;
370 hwif->proc = tmp_hwif->proc;
372 hwif->major = tmp_hwif->major;
373 hwif->straight8 = tmp_hwif->straight8;
374 hwif->bus_state = tmp_hwif->bus_state;
376 hwif->host_flags = tmp_hwif->host_flags;
378 hwif->pio_mask = tmp_hwif->pio_mask;
380 hwif->ultra_mask = tmp_hwif->ultra_mask;
381 hwif->mwdma_mask = tmp_hwif->mwdma_mask;
382 hwif->swdma_mask = tmp_hwif->swdma_mask;
384 hwif->cbl = tmp_hwif->cbl;
386 hwif->chipset = tmp_hwif->chipset;
387 hwif->hold = tmp_hwif->hold;
389 #ifdef CONFIG_BLK_DEV_IDEPCI
390 hwif->pci_dev = tmp_hwif->pci_dev;
391 hwif->cds = tmp_hwif->cds;
394 hwif->set_pio_mode = tmp_hwif->set_pio_mode;
395 hwif->set_dma_mode = tmp_hwif->set_dma_mode;
396 hwif->mdma_filter = tmp_hwif->mdma_filter;
397 hwif->udma_filter = tmp_hwif->udma_filter;
398 hwif->selectproc = tmp_hwif->selectproc;
399 hwif->reset_poll = tmp_hwif->reset_poll;
400 hwif->pre_reset = tmp_hwif->pre_reset;
401 hwif->resetproc = tmp_hwif->resetproc;
402 hwif->intrproc = tmp_hwif->intrproc;
403 hwif->maskproc = tmp_hwif->maskproc;
404 hwif->quirkproc = tmp_hwif->quirkproc;
405 hwif->busproc = tmp_hwif->busproc;
407 hwif->ata_input_data = tmp_hwif->ata_input_data;
408 hwif->ata_output_data = tmp_hwif->ata_output_data;
409 hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes;
410 hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes;
412 hwif->dma_setup = tmp_hwif->dma_setup;
413 hwif->dma_exec_cmd = tmp_hwif->dma_exec_cmd;
414 hwif->dma_start = tmp_hwif->dma_start;
415 hwif->ide_dma_end = tmp_hwif->ide_dma_end;
416 hwif->ide_dma_on = tmp_hwif->ide_dma_on;
417 hwif->dma_off_quietly = tmp_hwif->dma_off_quietly;
418 hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq;
419 hwif->ide_dma_clear_irq = tmp_hwif->ide_dma_clear_irq;
420 hwif->dma_host_on = tmp_hwif->dma_host_on;
421 hwif->dma_host_off = tmp_hwif->dma_host_off;
422 hwif->dma_lost_irq = tmp_hwif->dma_lost_irq;
423 hwif->dma_timeout = tmp_hwif->dma_timeout;
425 hwif->OUTB = tmp_hwif->OUTB;
426 hwif->OUTBSYNC = tmp_hwif->OUTBSYNC;
427 hwif->OUTW = tmp_hwif->OUTW;
428 hwif->OUTSW = tmp_hwif->OUTSW;
429 hwif->OUTSL = tmp_hwif->OUTSL;
431 hwif->INB = tmp_hwif->INB;
432 hwif->INW = tmp_hwif->INW;
433 hwif->INSW = tmp_hwif->INSW;
434 hwif->INSL = tmp_hwif->INSL;
436 hwif->sg_max_nents = tmp_hwif->sg_max_nents;
438 hwif->mmio = tmp_hwif->mmio;
439 hwif->rqsize = tmp_hwif->rqsize;
441 #ifndef CONFIG_BLK_DEV_IDECS
442 hwif->irq = tmp_hwif->irq;
445 hwif->dma_base = tmp_hwif->dma_base;
446 hwif->dma_master = tmp_hwif->dma_master;
447 hwif->dma_command = tmp_hwif->dma_command;
448 hwif->dma_vendor1 = tmp_hwif->dma_vendor1;
449 hwif->dma_status = tmp_hwif->dma_status;
450 hwif->dma_vendor3 = tmp_hwif->dma_vendor3;
451 hwif->dma_prdtable = tmp_hwif->dma_prdtable;
453 hwif->config_data = tmp_hwif->config_data;
454 hwif->select_data = tmp_hwif->select_data;
455 hwif->extra_base = tmp_hwif->extra_base;
456 hwif->extra_ports = tmp_hwif->extra_ports;
458 hwif->hwif_data = tmp_hwif->hwif_data;
462 * ide_unregister - free an IDE interface
463 * @index: index of interface (will change soon to a pointer)
465 * Perform the final unregister of an IDE interface. At the moment
466 * we don't refcount interfaces so this will also get split up.
469 * The caller must not hold the IDE locks
470 * The drive present/vanishing is not yet properly locked
471 * Take care with the callbacks. These have been split to avoid
472 * deadlocking the IDE layer. The shutdown callback is called
473 * before we take the lock and free resources. It is up to the
474 * caller to be sure there is no pending I/O here, and that
475 * the interface will not be reopened (present/vanishing locking
476 * isn't yet done BTW). After we commit to the final kill we
477 * call the cleanup callback with the ide locks held.
479 * Unregister restores the hwif structures to the default state.
480 * This is raving bonkers.
483 void ide_unregister(unsigned int index)
486 ide_hwif_t *hwif, *g;
487 static ide_hwif_t tmp_hwif; /* protected by ide_cfg_mtx */
488 ide_hwgroup_t *hwgroup;
489 int irq_count = 0, unit;
491 BUG_ON(index >= MAX_HWIFS);
493 BUG_ON(in_interrupt());
494 BUG_ON(irqs_disabled());
495 mutex_lock(&ide_cfg_mtx);
496 spin_lock_irq(&ide_lock);
497 hwif = &ide_hwifs[index];
500 for (unit = 0; unit < MAX_DRIVES; ++unit) {
501 drive = &hwif->drives[unit];
504 spin_unlock_irq(&ide_lock);
505 device_unregister(&drive->gendev);
506 wait_for_completion(&drive->gendev_rel_comp);
507 spin_lock_irq(&ide_lock);
511 spin_unlock_irq(&ide_lock);
513 ide_proc_unregister_port(hwif);
515 hwgroup = hwif->hwgroup;
517 * free the irq if we were the only hwif using it
521 if (g->irq == hwif->irq)
524 } while (g != hwgroup->hwif);
526 free_irq(hwif->irq, hwgroup);
528 spin_lock_irq(&ide_lock);
530 * Note that we only release the standard ports,
531 * and do not even try to handle any extra ports
532 * allocated for weird IDE interface chipsets.
534 ide_hwif_release_regions(hwif);
537 * Remove us from the hwgroup, and free
538 * the hwgroup if we were the only member
540 if (hwif->next == hwif) {
541 BUG_ON(hwgroup->hwif != hwif);
544 /* There is another interface in hwgroup.
545 * Unlink us, and set hwgroup->drive and ->hwif to
549 while (g->next != hwif)
551 g->next = hwif->next;
552 if (hwgroup->hwif == hwif) {
553 /* Chose a random hwif for hwgroup->hwif.
554 * It's guaranteed that there are no drives
555 * left in the hwgroup.
557 BUG_ON(hwgroup->drive != NULL);
560 BUG_ON(hwgroup->hwif == hwif);
563 /* More messed up locking ... */
564 spin_unlock_irq(&ide_lock);
565 device_unregister(&hwif->gendev);
566 wait_for_completion(&hwif->gendev_rel_comp);
569 * Remove us from the kernel's knowledge
571 blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS);
572 kfree(hwif->sg_table);
573 unregister_blkdev(hwif->major, hwif->name);
574 spin_lock_irq(&ide_lock);
576 if (hwif->dma_base) {
577 (void) ide_release_dma(hwif);
580 hwif->dma_master = 0;
581 hwif->dma_command = 0;
582 hwif->dma_vendor1 = 0;
583 hwif->dma_status = 0;
584 hwif->dma_vendor3 = 0;
585 hwif->dma_prdtable = 0;
587 hwif->extra_base = 0;
588 hwif->extra_ports = 0;
591 /* copy original settings */
594 /* restore hwif data to pristine status */
595 init_hwif_data(hwif, index);
596 init_hwif_default(hwif, index);
598 ide_hwif_restore(hwif, &tmp_hwif);
601 spin_unlock_irq(&ide_lock);
602 mutex_unlock(&ide_cfg_mtx);
605 EXPORT_SYMBOL(ide_unregister);
609 * ide_setup_ports - set up IDE interface ports
610 * @hw: register descriptions
611 * @base: base register
612 * @offsets: table of register offsets
613 * @ctrl: control register
615 * @irq: interrupt lie
617 * Setup hw_regs_t structure described by parameters. You
618 * may set up the hw structure yourself OR use this routine to
619 * do it for you. This is basically a helper
623 void ide_setup_ports ( hw_regs_t *hw,
624 unsigned long base, int *offsets,
625 unsigned long ctrl, unsigned long intr,
626 ide_ack_intr_t *ack_intr,
628 * ide_io_ops_t *iops,
634 memset(hw, 0, sizeof(hw_regs_t));
635 for (i = 0; i < IDE_NR_PORTS; i++) {
636 if (offsets[i] == -1) {
638 case IDE_CONTROL_OFFSET:
639 hw->io_ports[i] = ctrl;
641 #if defined(CONFIG_AMIGA) || defined(CONFIG_MAC)
643 hw->io_ports[i] = intr;
645 #endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */
651 hw->io_ports[i] = base + offsets[i];
656 hw->ack_intr = ack_intr;
663 * ide_register_hw_with_fixup - register IDE interface
664 * @hw: hardware registers
665 * @initializing: set while initializing built-in drivers
666 * @hwifp: pointer to returned hwif
667 * @fixup: fixup function
669 * Register an IDE interface, specifying exactly the registers etc.
670 * Set init=1 iff calling before probes have taken place.
672 * Returns -1 on error.
675 int ide_register_hw_with_fixup(hw_regs_t *hw, int initializing,
677 void(*fixup)(ide_hwif_t *hwif))
679 int index, retry = 1;
683 for (index = 0; index < MAX_HWIFS; ++index) {
684 hwif = &ide_hwifs[index];
685 if (hwif->hw.io_ports[IDE_DATA_OFFSET] == hw->io_ports[IDE_DATA_OFFSET])
688 for (index = 0; index < MAX_HWIFS; ++index) {
689 hwif = &ide_hwifs[index];
692 if ((!hwif->present && !hwif->mate && !initializing) ||
693 (!hwif->hw.io_ports[IDE_DATA_OFFSET] && initializing))
696 for (index = 0; index < MAX_HWIFS; index++)
697 ide_unregister(index);
702 ide_unregister(index);
703 else if (!hwif->hold) {
704 init_hwif_data(hwif, index);
705 init_hwif_default(hwif, index);
709 memcpy(&hwif->hw, hw, sizeof(*hw));
710 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->hw.io_ports));
713 hwif->chipset = hw->chipset;
714 hwif->gendev.parent = hw->dev;
717 probe_hwif_init_with_fixup(hwif, fixup);
718 ide_proc_register_port(hwif);
724 return (initializing || hwif->present) ? index : -1;
727 EXPORT_SYMBOL(ide_register_hw_with_fixup);
729 int ide_register_hw(hw_regs_t *hw, int initializing, ide_hwif_t **hwifp)
731 return ide_register_hw_with_fixup(hw, initializing, hwifp, NULL);
734 EXPORT_SYMBOL(ide_register_hw);
737 * Locks for IDE setting functionality
740 DEFINE_MUTEX(ide_setting_mtx);
742 EXPORT_SYMBOL_GPL(ide_setting_mtx);
745 * ide_spin_wait_hwgroup - wait for group
746 * @drive: drive in the group
748 * Wait for an IDE device group to go non busy and then return
749 * holding the ide_lock which guards the hwgroup->busy status
750 * and right to use it.
753 int ide_spin_wait_hwgroup (ide_drive_t *drive)
755 ide_hwgroup_t *hwgroup = HWGROUP(drive);
756 unsigned long timeout = jiffies + (3 * HZ);
758 spin_lock_irq(&ide_lock);
760 while (hwgroup->busy) {
761 unsigned long lflags;
762 spin_unlock_irq(&ide_lock);
763 local_irq_set(lflags);
764 if (time_after(jiffies, timeout)) {
765 local_irq_restore(lflags);
766 printk(KERN_ERR "%s: channel busy\n", drive->name);
769 local_irq_restore(lflags);
770 spin_lock_irq(&ide_lock);
775 EXPORT_SYMBOL(ide_spin_wait_hwgroup);
777 int set_io_32bit(ide_drive_t *drive, int arg)
779 if (drive->no_io_32bit)
782 if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1))
785 drive->io_32bit = arg;
786 #ifdef CONFIG_BLK_DEV_DTC2278
787 if (HWIF(drive)->chipset == ide_dtc2278)
788 HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg;
789 #endif /* CONFIG_BLK_DEV_DTC2278 */
793 static int set_ksettings(ide_drive_t *drive, int arg)
795 if (arg < 0 || arg > 1)
798 if (ide_spin_wait_hwgroup(drive))
800 drive->keep_settings = arg;
801 spin_unlock_irq(&ide_lock);
806 int set_using_dma(ide_drive_t *drive, int arg)
808 #ifdef CONFIG_BLK_DEV_IDEDMA
809 ide_hwif_t *hwif = drive->hwif;
812 if (arg < 0 || arg > 1)
815 if (!drive->id || !(drive->id->capability & 1))
818 if (hwif->ide_dma_on == NULL)
822 if (ide_spin_wait_hwgroup(drive))
825 * set ->busy flag, unlock and let it ride
827 hwif->hwgroup->busy = 1;
828 spin_unlock_irq(&ide_lock);
833 hwif->dma_off_quietly(drive);
834 if (ide_set_dma(drive) || hwif->ide_dma_on(drive))
840 * lock, clear ->busy flag and unlock before leaving
842 spin_lock_irq(&ide_lock);
843 hwif->hwgroup->busy = 0;
844 spin_unlock_irq(&ide_lock);
848 if (arg < 0 || arg > 1)
855 int set_pio_mode(ide_drive_t *drive, int arg)
859 if (arg < 0 || arg > 255)
862 if (drive->hwif->set_pio_mode == NULL)
865 if (drive->special.b.set_tune)
867 ide_init_drive_cmd(&rq);
868 drive->tune_req = (u8) arg;
869 drive->special.b.set_tune = 1;
870 (void) ide_do_drive_cmd(drive, &rq, ide_wait);
874 static int set_unmaskirq(ide_drive_t *drive, int arg)
876 if (drive->no_unmask)
879 if (arg < 0 || arg > 1)
882 if (ide_spin_wait_hwgroup(drive))
885 spin_unlock_irq(&ide_lock);
891 * system_bus_clock - clock guess
893 * External version of the bus clock guess used by very old IDE drivers
894 * for things like VLB timings. Should not be used.
897 int system_bus_clock (void)
899 return((int) ((!system_bus_speed) ? ide_system_bus_speed() : system_bus_speed ));
902 EXPORT_SYMBOL(system_bus_clock);
904 static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
906 ide_drive_t *drive = dev->driver_data;
907 ide_hwif_t *hwif = HWIF(drive);
909 struct request_pm_state rqpm;
913 /* Call ACPI _GTM only once */
914 if (!(drive->dn % 2))
915 ide_acpi_get_timing(hwif);
917 memset(&rq, 0, sizeof(rq));
918 memset(&rqpm, 0, sizeof(rqpm));
919 memset(&args, 0, sizeof(args));
920 rq.cmd_type = REQ_TYPE_PM_SUSPEND;
923 rqpm.pm_step = ide_pm_state_start_suspend;
924 if (mesg.event == PM_EVENT_PRETHAW)
925 mesg.event = PM_EVENT_FREEZE;
926 rqpm.pm_state = mesg.event;
928 ret = ide_do_drive_cmd(drive, &rq, ide_wait);
929 /* only call ACPI _PS3 after both drivers are suspended */
930 if (!ret && (((drive->dn % 2) && hwif->drives[0].present
931 && hwif->drives[1].present)
932 || !hwif->drives[0].present
933 || !hwif->drives[1].present))
934 ide_acpi_set_state(hwif, 0);
938 static int generic_ide_resume(struct device *dev)
940 ide_drive_t *drive = dev->driver_data;
941 ide_hwif_t *hwif = HWIF(drive);
943 struct request_pm_state rqpm;
947 /* Call ACPI _STM only once */
948 if (!(drive->dn % 2)) {
949 ide_acpi_set_state(hwif, 1);
950 ide_acpi_push_timing(hwif);
953 ide_acpi_exec_tfs(drive);
955 memset(&rq, 0, sizeof(rq));
956 memset(&rqpm, 0, sizeof(rqpm));
957 memset(&args, 0, sizeof(args));
958 rq.cmd_type = REQ_TYPE_PM_RESUME;
961 rqpm.pm_step = ide_pm_state_start_resume;
962 rqpm.pm_state = PM_EVENT_ON;
964 err = ide_do_drive_cmd(drive, &rq, ide_head_wait);
966 if (err == 0 && dev->driver) {
967 ide_driver_t *drv = to_ide_driver(dev->driver);
976 int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev,
977 unsigned int cmd, unsigned long arg)
981 void __user *p = (void __user *)arg;
982 int err = 0, (*setfunc)(ide_drive_t *, int);
986 case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val;
987 case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val;
988 case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val;
989 case HDIO_GET_DMA: val = &drive->using_dma; goto read_val;
990 case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val;
991 case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val;
992 case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val;
993 case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val;
994 case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val;
998 case HDIO_OBSOLETE_IDENTITY:
999 case HDIO_GET_IDENTITY:
1000 if (bdev != bdev->bd_contains)
1002 if (drive->id_read == 0)
1004 if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142))
1009 return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP |
1010 drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP |
1011 drive->nice0 << IDE_NICE_0 |
1012 drive->nice1 << IDE_NICE_1 |
1013 drive->nice2 << IDE_NICE_2,
1014 (long __user *) arg);
1016 #ifdef CONFIG_IDE_TASK_IOCTL
1017 case HDIO_DRIVE_TASKFILE:
1018 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
1020 switch(drive->media) {
1022 return ide_taskfile_ioctl(drive, cmd, arg);
1026 #endif /* CONFIG_IDE_TASK_IOCTL */
1028 case HDIO_DRIVE_CMD:
1029 if (!capable(CAP_SYS_RAWIO))
1031 return ide_cmd_ioctl(drive, cmd, arg);
1033 case HDIO_DRIVE_TASK:
1034 if (!capable(CAP_SYS_RAWIO))
1036 return ide_task_ioctl(drive, cmd, arg);
1038 case HDIO_SCAN_HWIF:
1042 if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1043 if (copy_from_user(args, p, 3 * sizeof(int)))
1045 memset(&hw, 0, sizeof(hw));
1046 ide_init_hwif_ports(&hw, (unsigned long) args[0],
1047 (unsigned long) args[1], NULL);
1049 if (ide_register_hw(&hw, 0, NULL) == -1)
1053 case HDIO_UNREGISTER_HWIF:
1054 if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1055 /* (arg > MAX_HWIFS) checked in function */
1056 ide_unregister(arg);
1059 if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1060 if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1))))
1062 drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1;
1063 drv = *(ide_driver_t **)bdev->bd_disk->private_data;
1064 if (drive->dsc_overlap && !drv->supports_dsc_overlap) {
1065 drive->dsc_overlap = 0;
1068 drive->nice1 = (arg >> IDE_NICE_1) & 1;
1070 case HDIO_DRIVE_RESET:
1072 unsigned long flags;
1073 if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1076 * Abort the current command on the
1077 * group if there is one, taking
1078 * care not to allow anything else
1079 * to be queued and to die on the
1080 * spot if we miss one somehow
1083 spin_lock_irqsave(&ide_lock, flags);
1085 if (HWGROUP(drive)->resetting) {
1086 spin_unlock_irqrestore(&ide_lock, flags);
1090 ide_abort(drive, "drive reset");
1092 BUG_ON(HWGROUP(drive)->handler);
1094 /* Ensure nothing gets queued after we
1095 drop the lock. Reset will clear the busy */
1097 HWGROUP(drive)->busy = 1;
1098 spin_unlock_irqrestore(&ide_lock, flags);
1099 (void) ide_do_reset(drive);
1104 case HDIO_GET_BUSSTATE:
1105 if (!capable(CAP_SYS_ADMIN))
1107 if (put_user(HWIF(drive)->bus_state, (long __user *)arg))
1111 case HDIO_SET_BUSSTATE:
1112 if (!capable(CAP_SYS_ADMIN))
1114 if (HWIF(drive)->busproc)
1115 return HWIF(drive)->busproc(drive, (int)arg);
1122 mutex_lock(&ide_setting_mtx);
1123 spin_lock_irqsave(&ide_lock, flags);
1125 spin_unlock_irqrestore(&ide_lock, flags);
1126 mutex_unlock(&ide_setting_mtx);
1127 return err >= 0 ? put_user(err, (long __user *)arg) : err;
1130 if (bdev != bdev->bd_contains)
1133 if (!capable(CAP_SYS_ADMIN))
1136 mutex_lock(&ide_setting_mtx);
1137 err = setfunc(drive, arg);
1138 mutex_unlock(&ide_setting_mtx);
1144 EXPORT_SYMBOL(generic_ide_ioctl);
1147 * stridx() returns the offset of c within s,
1148 * or -1 if c is '\0' or not found within s.
1150 static int __init stridx (const char *s, char c)
1152 char *i = strchr(s, c);
1153 return (i && c) ? i - s : -1;
1157 * match_parm() does parsing for ide_setup():
1159 * 1. the first char of s must be '='.
1160 * 2. if the remainder matches one of the supplied keywords,
1161 * the index (1 based) of the keyword is negated and returned.
1162 * 3. if the remainder is a series of no more than max_vals numbers
1163 * separated by commas, the numbers are saved in vals[] and a
1164 * count of how many were saved is returned. Base10 is assumed,
1165 * and base16 is allowed when prefixed with "0x".
1166 * 4. otherwise, zero is returned.
1168 static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals)
1170 static const char *decimal = "0123456789";
1171 static const char *hex = "0123456789abcdef";
1176 * Try matching against the supplied keywords,
1177 * and return -(index+1) if we match one
1179 if (keywords != NULL) {
1180 for (i = 0; *keywords != NULL; ++i) {
1181 if (!strcmp(s, *keywords++))
1186 * Look for a series of no more than "max_vals"
1187 * numeric values separated by commas, in base10,
1188 * or base16 when prefixed with "0x".
1189 * Return a count of how many were found.
1191 for (n = 0; (i = stridx(decimal, *s)) >= 0;) {
1193 while ((i = stridx(decimal, *++s)) >= 0)
1194 vals[n] = (vals[n] * 10) + i;
1195 if (*s == 'x' && !vals[n]) {
1196 while ((i = stridx(hex, *++s)) >= 0)
1197 vals[n] = (vals[n] * 0x10) + i;
1199 if (++n == max_vals)
1201 if (*s == ',' || *s == ';')
1207 return 0; /* zero = nothing matched */
1210 #ifdef CONFIG_BLK_DEV_ALI14XX
1211 extern int probe_ali14xx;
1212 extern int ali14xx_init(void);
1214 #ifdef CONFIG_BLK_DEV_UMC8672
1215 extern int probe_umc8672;
1216 extern int umc8672_init(void);
1218 #ifdef CONFIG_BLK_DEV_DTC2278
1219 extern int probe_dtc2278;
1220 extern int dtc2278_init(void);
1222 #ifdef CONFIG_BLK_DEV_HT6560B
1223 extern int probe_ht6560b;
1224 extern int ht6560b_init(void);
1226 #ifdef CONFIG_BLK_DEV_QD65XX
1227 extern int probe_qd65xx;
1228 extern int qd65xx_init(void);
1231 static int __initdata is_chipset_set[MAX_HWIFS];
1234 * ide_setup() gets called VERY EARLY during initialization,
1235 * to handle kernel "command line" strings beginning with "hdx=" or "ide".
1237 * Remember to update Documentation/ide.txt if you change something here.
1239 static int __init ide_setup(char *s)
1244 unsigned int hw, unit;
1245 const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1);
1246 const char max_hwif = '0' + (MAX_HWIFS - 1);
1249 if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */
1250 return 0; /* driver and not us */
1252 if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2))
1255 printk(KERN_INFO "ide_setup: %s", s);
1258 #ifdef CONFIG_BLK_DEV_IDEDOUBLER
1259 if (!strcmp(s, "ide=doubler")) {
1260 extern int ide_doubler;
1262 printk(" : Enabled support for IDE doublers\n");
1266 #endif /* CONFIG_BLK_DEV_IDEDOUBLER */
1268 if (!strcmp(s, "ide=nodma")) {
1269 printk(" : Prevented DMA\n");
1271 goto obsolete_option;
1274 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1275 if (!strcmp(s, "ide=reverse")) {
1276 ide_scan_direction = 1;
1277 printk(" : Enabled support for IDE inverse scan order.\n");
1282 #ifdef CONFIG_BLK_DEV_IDEACPI
1283 if (!strcmp(s, "ide=noacpi")) {
1284 //printk(" : Disable IDE ACPI support.\n");
1288 if (!strcmp(s, "ide=acpigtf")) {
1289 //printk(" : Enable IDE ACPI _GTF support.\n");
1293 if (!strcmp(s, "ide=acpionboot")) {
1294 //printk(" : Call IDE ACPI methods on boot.\n");
1295 ide_noacpionboot = 0;
1298 #endif /* CONFIG_BLK_DEV_IDEACPI */
1301 * Look for drive options: "hdx="
1303 if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) {
1304 const char *hd_words[] = {
1305 "none", "noprobe", "nowerr", "cdrom", "nodma",
1306 "autotune", "noautotune", "minus8", "swapdata", "bswap",
1307 "noflush", "remap", "remap63", "scsi", NULL };
1309 hw = unit / MAX_DRIVES;
1310 unit = unit % MAX_DRIVES;
1311 hwif = &ide_hwifs[hw];
1312 drive = &hwif->drives[unit];
1313 if (strncmp(s + 4, "ide-", 4) == 0) {
1314 strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req));
1317 switch (match_parm(&s[3], hd_words, vals, 3)) {
1318 case -1: /* "none" */
1319 case -2: /* "noprobe" */
1322 case -3: /* "nowerr" */
1323 drive->bad_wstat = BAD_R_STAT;
1326 case -4: /* "cdrom" */
1328 drive->media = ide_cdrom;
1329 /* an ATAPI device ignores DRDY */
1330 drive->ready_stat = 0;
1333 case -5: /* nodma */
1336 case -6: /* "autotune" */
1337 drive->autotune = IDE_TUNE_AUTO;
1338 goto obsolete_option;
1339 case -7: /* "noautotune" */
1340 drive->autotune = IDE_TUNE_NOAUTO;
1341 goto obsolete_option;
1342 case -9: /* "swapdata" */
1343 case -10: /* "bswap" */
1346 case -11: /* noflush */
1349 case -12: /* "remap" */
1350 drive->remap_0_to_1 = 1;
1352 case -13: /* "remap63" */
1355 case -14: /* "scsi" */
1358 case 3: /* cyl,head,sect */
1359 drive->media = ide_disk;
1360 drive->ready_stat = READY_STAT;
1361 drive->cyl = drive->bios_cyl = vals[0];
1362 drive->head = drive->bios_head = vals[1];
1363 drive->sect = drive->bios_sect = vals[2];
1365 drive->forced_geom = 1;
1373 if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e')
1376 * Look for bus speed option: "idebus="
1378 if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') {
1379 if (match_parm(&s[6], NULL, vals, 1) != 1)
1381 if (vals[0] >= 20 && vals[0] <= 66) {
1382 idebus_parameter = vals[0];
1384 printk(" -- BAD BUS SPEED! Expected value from 20 to 66");
1388 * Look for interface options: "idex="
1390 if (s[3] >= '0' && s[3] <= max_hwif) {
1392 * Be VERY CAREFUL changing this: note hardcoded indexes below
1393 * (-8, -9, -10) are reserved to ease the hardcoding.
1395 static const char *ide_words[] = {
1396 "noprobe", "serialize", "minus3", "minus4",
1397 "reset", "minus6", "ata66", "minus8", "minus9",
1398 "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb",
1399 "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" */
1443 extern int cmd640_vlb; /* flag for cmd640.c */
1448 #ifdef CONFIG_BLK_DEV_HT6560B
1449 case -13: /* "ht6560b" */
1453 #ifdef CONFIG_BLK_DEV_QD65XX
1454 case -12: /* "qd65xx" */
1458 #ifdef CONFIG_BLK_DEV_4DRIVES
1459 case -11: /* "four" drives on one set of ports */
1461 ide_hwif_t *mate = &ide_hwifs[hw^1];
1462 mate->drives[0].select.all ^= 0x20;
1463 mate->drives[1].select.all ^= 0x20;
1464 hwif->chipset = mate->chipset = ide_4drives;
1465 mate->irq = hwif->irq;
1466 memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports));
1469 hwif->serialized = mate->serialized = 1;
1470 goto obsolete_option;
1472 #endif /* CONFIG_BLK_DEV_4DRIVES */
1473 case -10: /* minus10 */
1474 case -9: /* minus9 */
1475 case -8: /* minus8 */
1480 case -7: /* ata66 */
1481 #ifdef CONFIG_BLK_DEV_IDEPCI
1483 * Use ATA_CBL_PATA40_SHORT so drive side
1484 * cable detection is also overriden.
1486 hwif->cbl = ATA_CBL_PATA40_SHORT;
1487 goto obsolete_option;
1491 case -5: /* "reset" */
1493 goto obsolete_option;
1494 case -2: /* "serialize" */
1495 hwif->mate = &ide_hwifs[hw^1];
1496 hwif->mate->mate = hwif;
1497 hwif->serialized = hwif->mate->serialized = 1;
1498 goto obsolete_option;
1500 case -1: /* "noprobe" */
1505 vals[1] = vals[0] + 0x206; /* default ctl */
1506 case 2: /* base,ctl */
1507 vals[2] = 0; /* default irq = probe for it */
1508 case 3: /* base,ctl,irq */
1509 hwif->hw.irq = vals[2];
1510 ide_init_hwif_ports(&hwif->hw, (unsigned long) vals[0], (unsigned long) vals[1], &hwif->irq);
1511 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports));
1512 hwif->irq = vals[2];
1514 hwif->chipset = ide_forced;
1515 goto obsolete_option;
1517 case 0: goto bad_option;
1519 printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n");
1524 printk(" -- BAD OPTION\n");
1527 printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n");
1530 printk("-- NOT SUPPORTED ON ide%d", hw);
1536 extern void __init pnpide_init(void);
1537 extern void __exit pnpide_exit(void);
1538 extern void __init h8300_ide_init(void);
1541 * probe_for_hwifs() finds/initializes "known" IDE interfaces
1543 static void __init probe_for_hwifs (void)
1545 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1546 ide_scan_pcibus(ide_scan_direction);
1549 #ifdef CONFIG_ETRAX_IDE
1551 extern void init_e100_ide(void);
1554 #endif /* CONFIG_ETRAX_IDE */
1555 #ifdef CONFIG_BLK_DEV_CMD640
1557 extern void ide_probe_for_cmd640x(void);
1558 ide_probe_for_cmd640x();
1560 #endif /* CONFIG_BLK_DEV_CMD640 */
1561 #ifdef CONFIG_BLK_DEV_IDE_PMAC
1563 extern int pmac_ide_probe(void);
1564 (void)pmac_ide_probe();
1566 #endif /* CONFIG_BLK_DEV_IDE_PMAC */
1567 #ifdef CONFIG_BLK_DEV_GAYLE
1569 extern void gayle_init(void);
1572 #endif /* CONFIG_BLK_DEV_GAYLE */
1573 #ifdef CONFIG_BLK_DEV_FALCON_IDE
1575 extern void falconide_init(void);
1578 #endif /* CONFIG_BLK_DEV_FALCON_IDE */
1579 #ifdef CONFIG_BLK_DEV_MAC_IDE
1581 extern void macide_init(void);
1584 #endif /* CONFIG_BLK_DEV_MAC_IDE */
1585 #ifdef CONFIG_BLK_DEV_Q40IDE
1587 extern void q40ide_init(void);
1590 #endif /* CONFIG_BLK_DEV_Q40IDE */
1591 #ifdef CONFIG_BLK_DEV_BUDDHA
1593 extern void buddha_init(void);
1596 #endif /* CONFIG_BLK_DEV_BUDDHA */
1597 #ifdef CONFIG_BLK_DEV_IDEPNP
1609 EXPORT_SYMBOL(ide_lock);
1611 static int ide_bus_match(struct device *dev, struct device_driver *drv)
1616 static char *media_string(ide_drive_t *drive)
1618 switch (drive->media) {
1634 static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf)
1636 ide_drive_t *drive = to_ide_device(dev);
1637 return sprintf(buf, "%s\n", media_string(drive));
1640 static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf)
1642 ide_drive_t *drive = to_ide_device(dev);
1643 return sprintf(buf, "%s\n", drive->name);
1646 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
1648 ide_drive_t *drive = to_ide_device(dev);
1649 return sprintf(buf, "ide:m-%s\n", media_string(drive));
1652 static struct device_attribute ide_dev_attrs[] = {
1654 __ATTR_RO(drivename),
1655 __ATTR_RO(modalias),
1659 static int ide_uevent(struct device *dev, struct kobj_uevent_env *env)
1661 ide_drive_t *drive = to_ide_device(dev);
1663 add_uevent_var(env, "MEDIA=%s", media_string(drive));
1664 add_uevent_var(env, "DRIVENAME=%s", drive->name);
1665 add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive));
1669 static int generic_ide_probe(struct device *dev)
1671 ide_drive_t *drive = to_ide_device(dev);
1672 ide_driver_t *drv = to_ide_driver(dev->driver);
1674 return drv->probe ? drv->probe(drive) : -ENODEV;
1677 static int generic_ide_remove(struct device *dev)
1679 ide_drive_t *drive = to_ide_device(dev);
1680 ide_driver_t *drv = to_ide_driver(dev->driver);
1688 static void generic_ide_shutdown(struct device *dev)
1690 ide_drive_t *drive = to_ide_device(dev);
1691 ide_driver_t *drv = to_ide_driver(dev->driver);
1693 if (dev->driver && drv->shutdown)
1694 drv->shutdown(drive);
1697 struct bus_type ide_bus_type = {
1699 .match = ide_bus_match,
1700 .uevent = ide_uevent,
1701 .probe = generic_ide_probe,
1702 .remove = generic_ide_remove,
1703 .shutdown = generic_ide_shutdown,
1704 .dev_attrs = ide_dev_attrs,
1705 .suspend = generic_ide_suspend,
1706 .resume = generic_ide_resume,
1709 EXPORT_SYMBOL_GPL(ide_bus_type);
1712 * This is gets invoked once during initialization, to set *everything* up
1714 static int __init ide_init(void)
1718 printk(KERN_INFO "Uniform Multi-Platform E-IDE driver " REVISION "\n");
1719 system_bus_speed = ide_system_bus_speed();
1721 ret = bus_register(&ide_bus_type);
1723 printk(KERN_WARNING "IDE: bus_register error: %d\n", ret);
1731 #ifdef CONFIG_BLK_DEV_ALI14XX
1733 (void)ali14xx_init();
1735 #ifdef CONFIG_BLK_DEV_UMC8672
1737 (void)umc8672_init();
1739 #ifdef CONFIG_BLK_DEV_DTC2278
1741 (void)dtc2278_init();
1743 #ifdef CONFIG_BLK_DEV_HT6560B
1745 (void)ht6560b_init();
1747 #ifdef CONFIG_BLK_DEV_QD65XX
1749 (void)qd65xx_init();
1752 /* Probe for special PCI and other "known" interface chipsets. */
1759 static char *options = NULL;
1760 module_param(options, charp, 0);
1761 MODULE_LICENSE("GPL");
1763 static void __init parse_options (char *line)
1767 if (line == NULL || !*line)
1769 while ((line = next) != NULL) {
1770 if ((next = strchr(line,' ')) != NULL)
1772 if (!ide_setup(line))
1773 printk (KERN_INFO "Unknown option '%s'\n", line);
1777 int __init init_module (void)
1779 parse_options(options);
1783 void __exit cleanup_module (void)
1787 for (index = 0; index < MAX_HWIFS; ++index)
1788 ide_unregister(index);
1790 #ifdef CONFIG_BLK_DEV_IDEPNP
1796 bus_unregister(&ide_bus_type);
1801 __setup("", ide_setup);
1803 module_init(ide_init);