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 ide_hwif_t * ide_find_port(unsigned long base)
273 for (i = 0; i < MAX_HWIFS; i++) {
274 hwif = &ide_hwifs[i];
275 if (hwif->io_ports[IDE_DATA_OFFSET] == base)
279 for (i = 0; i < MAX_HWIFS; i++) {
280 hwif = &ide_hwifs[i];
281 if (hwif->io_ports[IDE_DATA_OFFSET] == 0)
290 EXPORT_SYMBOL_GPL(ide_find_port);
292 static struct resource* hwif_request_region(ide_hwif_t *hwif,
293 unsigned long addr, int num)
295 struct resource *res = request_region(addr, num, hwif->name);
298 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
299 hwif->name, addr, addr+num-1);
304 * ide_hwif_request_regions - request resources for IDE
305 * @hwif: interface to use
307 * Requests all the needed resources for an interface.
308 * Right now core IDE code does this work which is deeply wrong.
309 * MMIO leaves it to the controller driver,
310 * PIO will migrate this way over time.
313 int ide_hwif_request_regions(ide_hwif_t *hwif)
320 addr = hwif->io_ports[IDE_CONTROL_OFFSET];
321 if (addr && !hwif_request_region(hwif, addr, 1))
322 goto control_region_busy;
324 addr = hwif->io_ports[IDE_DATA_OFFSET];
325 if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) {
326 if (!hwif_request_region(hwif, addr, 8))
327 goto data_region_busy;
331 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
332 addr = hwif->io_ports[i];
333 if (!hwif_request_region(hwif, addr, 1)) {
335 release_region(addr, 1);
336 goto data_region_busy;
342 addr = hwif->io_ports[IDE_CONTROL_OFFSET];
344 release_region(addr, 1);
346 /* If any errors are return, we drop the hwif interface. */
351 * ide_hwif_release_regions - free IDE resources
353 * Note that we only release the standard ports,
354 * and do not even try to handle any extra ports
355 * allocated for weird IDE interface chipsets.
357 * Note also that we don't yet handle mmio resources here. More
358 * importantly our caller should be doing this so we need to
359 * restructure this as a helper function for drivers.
362 void ide_hwif_release_regions(ide_hwif_t *hwif)
368 if (hwif->io_ports[IDE_CONTROL_OFFSET])
369 release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1);
370 if (hwif->straight8) {
371 release_region(hwif->io_ports[IDE_DATA_OFFSET], 8);
374 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
375 if (hwif->io_ports[i])
376 release_region(hwif->io_ports[i], 1);
380 * ide_hwif_restore - restore hwif to template
381 * @hwif: hwif to update
382 * @tmp_hwif: template
384 * Restore hwif to a previous state by copying most settings
388 static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
390 hwif->hwgroup = tmp_hwif->hwgroup;
392 hwif->gendev.parent = tmp_hwif->gendev.parent;
394 hwif->proc = tmp_hwif->proc;
396 hwif->major = tmp_hwif->major;
397 hwif->straight8 = tmp_hwif->straight8;
398 hwif->bus_state = tmp_hwif->bus_state;
400 hwif->host_flags = tmp_hwif->host_flags;
402 hwif->pio_mask = tmp_hwif->pio_mask;
404 hwif->ultra_mask = tmp_hwif->ultra_mask;
405 hwif->mwdma_mask = tmp_hwif->mwdma_mask;
406 hwif->swdma_mask = tmp_hwif->swdma_mask;
408 hwif->cbl = tmp_hwif->cbl;
410 hwif->chipset = tmp_hwif->chipset;
411 hwif->hold = tmp_hwif->hold;
413 #ifdef CONFIG_BLK_DEV_IDEPCI
414 hwif->pci_dev = tmp_hwif->pci_dev;
415 hwif->cds = tmp_hwif->cds;
418 hwif->fixup = tmp_hwif->fixup;
420 hwif->set_pio_mode = tmp_hwif->set_pio_mode;
421 hwif->set_dma_mode = tmp_hwif->set_dma_mode;
422 hwif->mdma_filter = tmp_hwif->mdma_filter;
423 hwif->udma_filter = tmp_hwif->udma_filter;
424 hwif->selectproc = tmp_hwif->selectproc;
425 hwif->reset_poll = tmp_hwif->reset_poll;
426 hwif->pre_reset = tmp_hwif->pre_reset;
427 hwif->resetproc = tmp_hwif->resetproc;
428 hwif->intrproc = tmp_hwif->intrproc;
429 hwif->maskproc = tmp_hwif->maskproc;
430 hwif->quirkproc = tmp_hwif->quirkproc;
431 hwif->busproc = tmp_hwif->busproc;
433 hwif->ata_input_data = tmp_hwif->ata_input_data;
434 hwif->ata_output_data = tmp_hwif->ata_output_data;
435 hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes;
436 hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes;
438 hwif->dma_setup = tmp_hwif->dma_setup;
439 hwif->dma_exec_cmd = tmp_hwif->dma_exec_cmd;
440 hwif->dma_start = tmp_hwif->dma_start;
441 hwif->ide_dma_end = tmp_hwif->ide_dma_end;
442 hwif->ide_dma_on = tmp_hwif->ide_dma_on;
443 hwif->dma_off_quietly = tmp_hwif->dma_off_quietly;
444 hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq;
445 hwif->ide_dma_clear_irq = tmp_hwif->ide_dma_clear_irq;
446 hwif->dma_host_on = tmp_hwif->dma_host_on;
447 hwif->dma_host_off = tmp_hwif->dma_host_off;
448 hwif->dma_lost_irq = tmp_hwif->dma_lost_irq;
449 hwif->dma_timeout = tmp_hwif->dma_timeout;
451 hwif->OUTB = tmp_hwif->OUTB;
452 hwif->OUTBSYNC = tmp_hwif->OUTBSYNC;
453 hwif->OUTW = tmp_hwif->OUTW;
454 hwif->OUTSW = tmp_hwif->OUTSW;
455 hwif->OUTSL = tmp_hwif->OUTSL;
457 hwif->INB = tmp_hwif->INB;
458 hwif->INW = tmp_hwif->INW;
459 hwif->INSW = tmp_hwif->INSW;
460 hwif->INSL = tmp_hwif->INSL;
462 hwif->sg_max_nents = tmp_hwif->sg_max_nents;
464 hwif->mmio = tmp_hwif->mmio;
465 hwif->rqsize = tmp_hwif->rqsize;
467 #ifndef CONFIG_BLK_DEV_IDECS
468 hwif->irq = tmp_hwif->irq;
471 hwif->dma_base = tmp_hwif->dma_base;
472 hwif->dma_master = tmp_hwif->dma_master;
473 hwif->dma_command = tmp_hwif->dma_command;
474 hwif->dma_vendor1 = tmp_hwif->dma_vendor1;
475 hwif->dma_status = tmp_hwif->dma_status;
476 hwif->dma_vendor3 = tmp_hwif->dma_vendor3;
477 hwif->dma_prdtable = tmp_hwif->dma_prdtable;
479 hwif->config_data = tmp_hwif->config_data;
480 hwif->select_data = tmp_hwif->select_data;
481 hwif->extra_base = tmp_hwif->extra_base;
482 hwif->extra_ports = tmp_hwif->extra_ports;
484 hwif->hwif_data = tmp_hwif->hwif_data;
488 * ide_unregister - free an IDE interface
489 * @index: index of interface (will change soon to a pointer)
491 * Perform the final unregister of an IDE interface. At the moment
492 * we don't refcount interfaces so this will also get split up.
495 * The caller must not hold the IDE locks
496 * The drive present/vanishing is not yet properly locked
497 * Take care with the callbacks. These have been split to avoid
498 * deadlocking the IDE layer. The shutdown callback is called
499 * before we take the lock and free resources. It is up to the
500 * caller to be sure there is no pending I/O here, and that
501 * the interface will not be reopened (present/vanishing locking
502 * isn't yet done BTW). After we commit to the final kill we
503 * call the cleanup callback with the ide locks held.
505 * Unregister restores the hwif structures to the default state.
506 * This is raving bonkers.
509 void ide_unregister(unsigned int index)
512 ide_hwif_t *hwif, *g;
513 static ide_hwif_t tmp_hwif; /* protected by ide_cfg_mtx */
514 ide_hwgroup_t *hwgroup;
515 int irq_count = 0, unit;
517 BUG_ON(index >= MAX_HWIFS);
519 BUG_ON(in_interrupt());
520 BUG_ON(irqs_disabled());
521 mutex_lock(&ide_cfg_mtx);
522 spin_lock_irq(&ide_lock);
523 hwif = &ide_hwifs[index];
526 for (unit = 0; unit < MAX_DRIVES; ++unit) {
527 drive = &hwif->drives[unit];
530 spin_unlock_irq(&ide_lock);
531 device_unregister(&drive->gendev);
532 wait_for_completion(&drive->gendev_rel_comp);
533 spin_lock_irq(&ide_lock);
537 spin_unlock_irq(&ide_lock);
539 ide_proc_unregister_port(hwif);
541 hwgroup = hwif->hwgroup;
543 * free the irq if we were the only hwif using it
547 if (g->irq == hwif->irq)
550 } while (g != hwgroup->hwif);
552 free_irq(hwif->irq, hwgroup);
554 spin_lock_irq(&ide_lock);
556 * Note that we only release the standard ports,
557 * and do not even try to handle any extra ports
558 * allocated for weird IDE interface chipsets.
560 ide_hwif_release_regions(hwif);
563 * Remove us from the hwgroup, and free
564 * the hwgroup if we were the only member
566 if (hwif->next == hwif) {
567 BUG_ON(hwgroup->hwif != hwif);
570 /* There is another interface in hwgroup.
571 * Unlink us, and set hwgroup->drive and ->hwif to
575 while (g->next != hwif)
577 g->next = hwif->next;
578 if (hwgroup->hwif == hwif) {
579 /* Chose a random hwif for hwgroup->hwif.
580 * It's guaranteed that there are no drives
581 * left in the hwgroup.
583 BUG_ON(hwgroup->drive != NULL);
586 BUG_ON(hwgroup->hwif == hwif);
589 /* More messed up locking ... */
590 spin_unlock_irq(&ide_lock);
591 device_unregister(&hwif->gendev);
592 wait_for_completion(&hwif->gendev_rel_comp);
595 * Remove us from the kernel's knowledge
597 blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS);
598 kfree(hwif->sg_table);
599 unregister_blkdev(hwif->major, hwif->name);
600 spin_lock_irq(&ide_lock);
602 if (hwif->dma_base) {
603 (void) ide_release_dma(hwif);
606 hwif->dma_master = 0;
607 hwif->dma_command = 0;
608 hwif->dma_vendor1 = 0;
609 hwif->dma_status = 0;
610 hwif->dma_vendor3 = 0;
611 hwif->dma_prdtable = 0;
613 hwif->extra_base = 0;
614 hwif->extra_ports = 0;
617 /* copy original settings */
620 /* restore hwif data to pristine status */
621 init_hwif_data(hwif, index);
622 init_hwif_default(hwif, index);
624 ide_hwif_restore(hwif, &tmp_hwif);
627 spin_unlock_irq(&ide_lock);
628 mutex_unlock(&ide_cfg_mtx);
631 EXPORT_SYMBOL(ide_unregister);
635 * ide_setup_ports - set up IDE interface ports
636 * @hw: register descriptions
637 * @base: base register
638 * @offsets: table of register offsets
639 * @ctrl: control register
641 * @irq: interrupt lie
643 * Setup hw_regs_t structure described by parameters. You
644 * may set up the hw structure yourself OR use this routine to
645 * do it for you. This is basically a helper
649 void ide_setup_ports ( hw_regs_t *hw,
650 unsigned long base, int *offsets,
651 unsigned long ctrl, unsigned long intr,
652 ide_ack_intr_t *ack_intr,
654 * ide_io_ops_t *iops,
660 memset(hw, 0, sizeof(hw_regs_t));
661 for (i = 0; i < IDE_NR_PORTS; i++) {
662 if (offsets[i] == -1) {
664 case IDE_CONTROL_OFFSET:
665 hw->io_ports[i] = ctrl;
667 #if defined(CONFIG_AMIGA) || defined(CONFIG_MAC)
669 hw->io_ports[i] = intr;
671 #endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */
677 hw->io_ports[i] = base + offsets[i];
682 hw->ack_intr = ack_intr;
689 * ide_register_hw - register IDE interface
690 * @hw: hardware registers
691 * @fixup: fixup function
692 * @initializing: set while initializing built-in drivers
693 * @hwifp: pointer to returned hwif
695 * Register an IDE interface, specifying exactly the registers etc.
696 * Set init=1 iff calling before probes have taken place.
698 * Returns -1 on error.
701 int ide_register_hw(hw_regs_t *hw, void (*fixup)(ide_hwif_t *),
702 int initializing, ide_hwif_t **hwifp)
704 int index, retry = 1;
708 for (index = 0; index < MAX_HWIFS; ++index) {
709 hwif = &ide_hwifs[index];
710 if (hwif->hw.io_ports[IDE_DATA_OFFSET] == hw->io_ports[IDE_DATA_OFFSET])
713 for (index = 0; index < MAX_HWIFS; ++index) {
714 hwif = &ide_hwifs[index];
717 if ((!hwif->present && !hwif->mate && !initializing) ||
718 (!hwif->hw.io_ports[IDE_DATA_OFFSET] && initializing))
721 for (index = 0; index < MAX_HWIFS; index++)
722 ide_unregister(index);
727 ide_unregister(index);
728 else if (!hwif->hold) {
729 init_hwif_data(hwif, index);
730 init_hwif_default(hwif, index);
734 memcpy(&hwif->hw, hw, sizeof(*hw));
735 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->hw.io_ports));
739 hwif->chipset = hw->chipset;
740 hwif->gendev.parent = hw->dev;
742 if (initializing == 0) {
743 u8 idx[4] = { index, 0xff, 0xff, 0xff };
751 return (initializing || hwif->present) ? index : -1;
754 EXPORT_SYMBOL(ide_register_hw);
757 * Locks for IDE setting functionality
760 DEFINE_MUTEX(ide_setting_mtx);
762 EXPORT_SYMBOL_GPL(ide_setting_mtx);
765 * ide_spin_wait_hwgroup - wait for group
766 * @drive: drive in the group
768 * Wait for an IDE device group to go non busy and then return
769 * holding the ide_lock which guards the hwgroup->busy status
770 * and right to use it.
773 int ide_spin_wait_hwgroup (ide_drive_t *drive)
775 ide_hwgroup_t *hwgroup = HWGROUP(drive);
776 unsigned long timeout = jiffies + (3 * HZ);
778 spin_lock_irq(&ide_lock);
780 while (hwgroup->busy) {
781 unsigned long lflags;
782 spin_unlock_irq(&ide_lock);
783 local_irq_set(lflags);
784 if (time_after(jiffies, timeout)) {
785 local_irq_restore(lflags);
786 printk(KERN_ERR "%s: channel busy\n", drive->name);
789 local_irq_restore(lflags);
790 spin_lock_irq(&ide_lock);
795 EXPORT_SYMBOL(ide_spin_wait_hwgroup);
797 int set_io_32bit(ide_drive_t *drive, int arg)
799 if (drive->no_io_32bit)
802 if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1))
805 drive->io_32bit = arg;
806 #ifdef CONFIG_BLK_DEV_DTC2278
807 if (HWIF(drive)->chipset == ide_dtc2278)
808 HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg;
809 #endif /* CONFIG_BLK_DEV_DTC2278 */
813 static int set_ksettings(ide_drive_t *drive, int arg)
815 if (arg < 0 || arg > 1)
818 if (ide_spin_wait_hwgroup(drive))
820 drive->keep_settings = arg;
821 spin_unlock_irq(&ide_lock);
826 int set_using_dma(ide_drive_t *drive, int arg)
828 #ifdef CONFIG_BLK_DEV_IDEDMA
829 ide_hwif_t *hwif = drive->hwif;
832 if (arg < 0 || arg > 1)
835 if (!drive->id || !(drive->id->capability & 1))
838 if (hwif->ide_dma_on == NULL)
842 if (ide_spin_wait_hwgroup(drive))
845 * set ->busy flag, unlock and let it ride
847 hwif->hwgroup->busy = 1;
848 spin_unlock_irq(&ide_lock);
853 hwif->dma_off_quietly(drive);
854 if (ide_set_dma(drive) || hwif->ide_dma_on(drive))
860 * lock, clear ->busy flag and unlock before leaving
862 spin_lock_irq(&ide_lock);
863 hwif->hwgroup->busy = 0;
864 spin_unlock_irq(&ide_lock);
868 if (arg < 0 || arg > 1)
875 int set_pio_mode(ide_drive_t *drive, int arg)
879 if (arg < 0 || arg > 255)
882 if (drive->hwif->set_pio_mode == NULL)
885 if (drive->special.b.set_tune)
887 ide_init_drive_cmd(&rq);
888 drive->tune_req = (u8) arg;
889 drive->special.b.set_tune = 1;
890 (void) ide_do_drive_cmd(drive, &rq, ide_wait);
894 static int set_unmaskirq(ide_drive_t *drive, int arg)
896 if (drive->no_unmask)
899 if (arg < 0 || arg > 1)
902 if (ide_spin_wait_hwgroup(drive))
905 spin_unlock_irq(&ide_lock);
911 * system_bus_clock - clock guess
913 * External version of the bus clock guess used by very old IDE drivers
914 * for things like VLB timings. Should not be used.
917 int system_bus_clock (void)
919 return((int) ((!system_bus_speed) ? ide_system_bus_speed() : system_bus_speed ));
922 EXPORT_SYMBOL(system_bus_clock);
924 static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
926 ide_drive_t *drive = dev->driver_data;
927 ide_hwif_t *hwif = HWIF(drive);
929 struct request_pm_state rqpm;
933 /* Call ACPI _GTM only once */
934 if (!(drive->dn % 2))
935 ide_acpi_get_timing(hwif);
937 memset(&rq, 0, sizeof(rq));
938 memset(&rqpm, 0, sizeof(rqpm));
939 memset(&args, 0, sizeof(args));
940 rq.cmd_type = REQ_TYPE_PM_SUSPEND;
943 rqpm.pm_step = ide_pm_state_start_suspend;
944 if (mesg.event == PM_EVENT_PRETHAW)
945 mesg.event = PM_EVENT_FREEZE;
946 rqpm.pm_state = mesg.event;
948 ret = ide_do_drive_cmd(drive, &rq, ide_wait);
949 /* only call ACPI _PS3 after both drivers are suspended */
950 if (!ret && (((drive->dn % 2) && hwif->drives[0].present
951 && hwif->drives[1].present)
952 || !hwif->drives[0].present
953 || !hwif->drives[1].present))
954 ide_acpi_set_state(hwif, 0);
958 static int generic_ide_resume(struct device *dev)
960 ide_drive_t *drive = dev->driver_data;
961 ide_hwif_t *hwif = HWIF(drive);
963 struct request_pm_state rqpm;
967 /* Call ACPI _STM only once */
968 if (!(drive->dn % 2)) {
969 ide_acpi_set_state(hwif, 1);
970 ide_acpi_push_timing(hwif);
973 ide_acpi_exec_tfs(drive);
975 memset(&rq, 0, sizeof(rq));
976 memset(&rqpm, 0, sizeof(rqpm));
977 memset(&args, 0, sizeof(args));
978 rq.cmd_type = REQ_TYPE_PM_RESUME;
981 rqpm.pm_step = ide_pm_state_start_resume;
982 rqpm.pm_state = PM_EVENT_ON;
984 err = ide_do_drive_cmd(drive, &rq, ide_head_wait);
986 if (err == 0 && dev->driver) {
987 ide_driver_t *drv = to_ide_driver(dev->driver);
996 int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev,
997 unsigned int cmd, unsigned long arg)
1001 void __user *p = (void __user *)arg;
1002 int err = 0, (*setfunc)(ide_drive_t *, int);
1006 case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val;
1007 case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val;
1008 case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val;
1009 case HDIO_GET_DMA: val = &drive->using_dma; goto read_val;
1010 case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val;
1011 case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val;
1012 case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val;
1013 case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val;
1014 case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val;
1018 case HDIO_OBSOLETE_IDENTITY:
1019 case HDIO_GET_IDENTITY:
1020 if (bdev != bdev->bd_contains)
1022 if (drive->id_read == 0)
1024 if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142))
1029 return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP |
1030 drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP |
1031 drive->nice0 << IDE_NICE_0 |
1032 drive->nice1 << IDE_NICE_1 |
1033 drive->nice2 << IDE_NICE_2,
1034 (long __user *) arg);
1036 #ifdef CONFIG_IDE_TASK_IOCTL
1037 case HDIO_DRIVE_TASKFILE:
1038 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
1040 switch(drive->media) {
1042 return ide_taskfile_ioctl(drive, cmd, arg);
1046 #endif /* CONFIG_IDE_TASK_IOCTL */
1048 case HDIO_DRIVE_CMD:
1049 if (!capable(CAP_SYS_RAWIO))
1051 return ide_cmd_ioctl(drive, cmd, arg);
1053 case HDIO_DRIVE_TASK:
1054 if (!capable(CAP_SYS_RAWIO))
1056 return ide_task_ioctl(drive, cmd, arg);
1058 case HDIO_SCAN_HWIF:
1062 if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1063 if (copy_from_user(args, p, 3 * sizeof(int)))
1065 memset(&hw, 0, sizeof(hw));
1066 ide_init_hwif_ports(&hw, (unsigned long) args[0],
1067 (unsigned long) args[1], NULL);
1069 if (ide_register_hw(&hw, NULL, 0, NULL) == -1)
1073 case HDIO_UNREGISTER_HWIF:
1074 if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1075 /* (arg > MAX_HWIFS) checked in function */
1076 ide_unregister(arg);
1079 if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1080 if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1))))
1082 drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1;
1083 drv = *(ide_driver_t **)bdev->bd_disk->private_data;
1084 if (drive->dsc_overlap && !drv->supports_dsc_overlap) {
1085 drive->dsc_overlap = 0;
1088 drive->nice1 = (arg >> IDE_NICE_1) & 1;
1090 case HDIO_DRIVE_RESET:
1092 unsigned long flags;
1093 if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1096 * Abort the current command on the
1097 * group if there is one, taking
1098 * care not to allow anything else
1099 * to be queued and to die on the
1100 * spot if we miss one somehow
1103 spin_lock_irqsave(&ide_lock, flags);
1105 if (HWGROUP(drive)->resetting) {
1106 spin_unlock_irqrestore(&ide_lock, flags);
1110 ide_abort(drive, "drive reset");
1112 BUG_ON(HWGROUP(drive)->handler);
1114 /* Ensure nothing gets queued after we
1115 drop the lock. Reset will clear the busy */
1117 HWGROUP(drive)->busy = 1;
1118 spin_unlock_irqrestore(&ide_lock, flags);
1119 (void) ide_do_reset(drive);
1124 case HDIO_GET_BUSSTATE:
1125 if (!capable(CAP_SYS_ADMIN))
1127 if (put_user(HWIF(drive)->bus_state, (long __user *)arg))
1131 case HDIO_SET_BUSSTATE:
1132 if (!capable(CAP_SYS_ADMIN))
1134 if (HWIF(drive)->busproc)
1135 return HWIF(drive)->busproc(drive, (int)arg);
1142 mutex_lock(&ide_setting_mtx);
1143 spin_lock_irqsave(&ide_lock, flags);
1145 spin_unlock_irqrestore(&ide_lock, flags);
1146 mutex_unlock(&ide_setting_mtx);
1147 return err >= 0 ? put_user(err, (long __user *)arg) : err;
1150 if (bdev != bdev->bd_contains)
1153 if (!capable(CAP_SYS_ADMIN))
1156 mutex_lock(&ide_setting_mtx);
1157 err = setfunc(drive, arg);
1158 mutex_unlock(&ide_setting_mtx);
1164 EXPORT_SYMBOL(generic_ide_ioctl);
1167 * stridx() returns the offset of c within s,
1168 * or -1 if c is '\0' or not found within s.
1170 static int __init stridx (const char *s, char c)
1172 char *i = strchr(s, c);
1173 return (i && c) ? i - s : -1;
1177 * match_parm() does parsing for ide_setup():
1179 * 1. the first char of s must be '='.
1180 * 2. if the remainder matches one of the supplied keywords,
1181 * the index (1 based) of the keyword is negated and returned.
1182 * 3. if the remainder is a series of no more than max_vals numbers
1183 * separated by commas, the numbers are saved in vals[] and a
1184 * count of how many were saved is returned. Base10 is assumed,
1185 * and base16 is allowed when prefixed with "0x".
1186 * 4. otherwise, zero is returned.
1188 static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals)
1190 static const char *decimal = "0123456789";
1191 static const char *hex = "0123456789abcdef";
1196 * Try matching against the supplied keywords,
1197 * and return -(index+1) if we match one
1199 if (keywords != NULL) {
1200 for (i = 0; *keywords != NULL; ++i) {
1201 if (!strcmp(s, *keywords++))
1206 * Look for a series of no more than "max_vals"
1207 * numeric values separated by commas, in base10,
1208 * or base16 when prefixed with "0x".
1209 * Return a count of how many were found.
1211 for (n = 0; (i = stridx(decimal, *s)) >= 0;) {
1213 while ((i = stridx(decimal, *++s)) >= 0)
1214 vals[n] = (vals[n] * 10) + i;
1215 if (*s == 'x' && !vals[n]) {
1216 while ((i = stridx(hex, *++s)) >= 0)
1217 vals[n] = (vals[n] * 0x10) + i;
1219 if (++n == max_vals)
1221 if (*s == ',' || *s == ';')
1227 return 0; /* zero = nothing matched */
1230 #ifdef CONFIG_BLK_DEV_ALI14XX
1231 extern int probe_ali14xx;
1232 extern int ali14xx_init(void);
1234 #ifdef CONFIG_BLK_DEV_UMC8672
1235 extern int probe_umc8672;
1236 extern int umc8672_init(void);
1238 #ifdef CONFIG_BLK_DEV_DTC2278
1239 extern int probe_dtc2278;
1240 extern int dtc2278_init(void);
1242 #ifdef CONFIG_BLK_DEV_HT6560B
1243 extern int probe_ht6560b;
1244 extern int ht6560b_init(void);
1246 #ifdef CONFIG_BLK_DEV_QD65XX
1247 extern int probe_qd65xx;
1248 extern int qd65xx_init(void);
1251 static int __initdata is_chipset_set[MAX_HWIFS];
1254 * ide_setup() gets called VERY EARLY during initialization,
1255 * to handle kernel "command line" strings beginning with "hdx=" or "ide".
1257 * Remember to update Documentation/ide.txt if you change something here.
1259 static int __init ide_setup(char *s)
1264 unsigned int hw, unit;
1265 const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1);
1266 const char max_hwif = '0' + (MAX_HWIFS - 1);
1269 if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */
1270 return 0; /* driver and not us */
1272 if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2))
1275 printk(KERN_INFO "ide_setup: %s", s);
1278 #ifdef CONFIG_BLK_DEV_IDEDOUBLER
1279 if (!strcmp(s, "ide=doubler")) {
1280 extern int ide_doubler;
1282 printk(" : Enabled support for IDE doublers\n");
1286 #endif /* CONFIG_BLK_DEV_IDEDOUBLER */
1288 if (!strcmp(s, "ide=nodma")) {
1289 printk(" : Prevented DMA\n");
1291 goto obsolete_option;
1294 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1295 if (!strcmp(s, "ide=reverse")) {
1296 ide_scan_direction = 1;
1297 printk(" : Enabled support for IDE inverse scan order.\n");
1302 #ifdef CONFIG_BLK_DEV_IDEACPI
1303 if (!strcmp(s, "ide=noacpi")) {
1304 //printk(" : Disable IDE ACPI support.\n");
1308 if (!strcmp(s, "ide=acpigtf")) {
1309 //printk(" : Enable IDE ACPI _GTF support.\n");
1313 if (!strcmp(s, "ide=acpionboot")) {
1314 //printk(" : Call IDE ACPI methods on boot.\n");
1315 ide_noacpionboot = 0;
1318 #endif /* CONFIG_BLK_DEV_IDEACPI */
1321 * Look for drive options: "hdx="
1323 if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) {
1324 const char *hd_words[] = {
1325 "none", "noprobe", "nowerr", "cdrom", "nodma",
1326 "autotune", "noautotune", "minus8", "swapdata", "bswap",
1327 "noflush", "remap", "remap63", "scsi", NULL };
1329 hw = unit / MAX_DRIVES;
1330 unit = unit % MAX_DRIVES;
1331 hwif = &ide_hwifs[hw];
1332 drive = &hwif->drives[unit];
1333 if (strncmp(s + 4, "ide-", 4) == 0) {
1334 strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req));
1337 switch (match_parm(&s[3], hd_words, vals, 3)) {
1338 case -1: /* "none" */
1339 case -2: /* "noprobe" */
1342 case -3: /* "nowerr" */
1343 drive->bad_wstat = BAD_R_STAT;
1346 case -4: /* "cdrom" */
1348 drive->media = ide_cdrom;
1349 /* an ATAPI device ignores DRDY */
1350 drive->ready_stat = 0;
1353 case -5: /* nodma */
1356 case -6: /* "autotune" */
1357 drive->autotune = IDE_TUNE_AUTO;
1358 goto obsolete_option;
1359 case -7: /* "noautotune" */
1360 drive->autotune = IDE_TUNE_NOAUTO;
1361 goto obsolete_option;
1362 case -9: /* "swapdata" */
1363 case -10: /* "bswap" */
1366 case -11: /* noflush */
1369 case -12: /* "remap" */
1370 drive->remap_0_to_1 = 1;
1372 case -13: /* "remap63" */
1375 case -14: /* "scsi" */
1378 case 3: /* cyl,head,sect */
1379 drive->media = ide_disk;
1380 drive->ready_stat = READY_STAT;
1381 drive->cyl = drive->bios_cyl = vals[0];
1382 drive->head = drive->bios_head = vals[1];
1383 drive->sect = drive->bios_sect = vals[2];
1385 drive->forced_geom = 1;
1393 if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e')
1396 * Look for bus speed option: "idebus="
1398 if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') {
1399 if (match_parm(&s[6], NULL, vals, 1) != 1)
1401 if (vals[0] >= 20 && vals[0] <= 66) {
1402 idebus_parameter = vals[0];
1404 printk(" -- BAD BUS SPEED! Expected value from 20 to 66");
1408 * Look for interface options: "idex="
1410 if (s[3] >= '0' && s[3] <= max_hwif) {
1412 * Be VERY CAREFUL changing this: note hardcoded indexes below
1413 * (-8, -9, -10) are reserved to ease the hardcoding.
1415 static const char *ide_words[] = {
1416 "noprobe", "serialize", "minus3", "minus4",
1417 "reset", "minus6", "ata66", "minus8", "minus9",
1418 "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb",
1419 "dtc2278", "umc8672", "ali14xx", NULL };
1421 hwif = &ide_hwifs[hw];
1422 i = match_parm(&s[4], ide_words, vals, 3);
1425 * Cryptic check to ensure chipset not already set for hwif.
1426 * Note: we can't depend on hwif->chipset here.
1428 if ((i >= -18 && i <= -11) || (i > 0 && i <= 3)) {
1429 /* chipset already specified */
1430 if (is_chipset_set[hw])
1432 if (i > -18 && i <= -11) {
1433 /* these drivers are for "ide0=" only */
1436 /* chipset already specified for 2nd port */
1437 if (is_chipset_set[hw+1])
1440 is_chipset_set[hw] = 1;
1445 #ifdef CONFIG_BLK_DEV_ALI14XX
1446 case -17: /* "ali14xx" */
1450 #ifdef CONFIG_BLK_DEV_UMC8672
1451 case -16: /* "umc8672" */
1455 #ifdef CONFIG_BLK_DEV_DTC2278
1456 case -15: /* "dtc2278" */
1460 #ifdef CONFIG_BLK_DEV_CMD640
1461 case -14: /* "cmd640_vlb" */
1463 extern int cmd640_vlb; /* flag for cmd640.c */
1468 #ifdef CONFIG_BLK_DEV_HT6560B
1469 case -13: /* "ht6560b" */
1473 #ifdef CONFIG_BLK_DEV_QD65XX
1474 case -12: /* "qd65xx" */
1478 #ifdef CONFIG_BLK_DEV_4DRIVES
1479 case -11: /* "four" drives on one set of ports */
1481 ide_hwif_t *mate = &ide_hwifs[hw^1];
1482 mate->drives[0].select.all ^= 0x20;
1483 mate->drives[1].select.all ^= 0x20;
1484 hwif->chipset = mate->chipset = ide_4drives;
1485 mate->irq = hwif->irq;
1486 memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports));
1489 hwif->serialized = mate->serialized = 1;
1490 goto obsolete_option;
1492 #endif /* CONFIG_BLK_DEV_4DRIVES */
1493 case -10: /* minus10 */
1494 case -9: /* minus9 */
1495 case -8: /* minus8 */
1500 case -7: /* ata66 */
1501 #ifdef CONFIG_BLK_DEV_IDEPCI
1503 * Use ATA_CBL_PATA40_SHORT so drive side
1504 * cable detection is also overriden.
1506 hwif->cbl = ATA_CBL_PATA40_SHORT;
1507 goto obsolete_option;
1511 case -5: /* "reset" */
1513 goto obsolete_option;
1514 case -2: /* "serialize" */
1515 hwif->mate = &ide_hwifs[hw^1];
1516 hwif->mate->mate = hwif;
1517 hwif->serialized = hwif->mate->serialized = 1;
1518 goto obsolete_option;
1520 case -1: /* "noprobe" */
1525 vals[1] = vals[0] + 0x206; /* default ctl */
1526 case 2: /* base,ctl */
1527 vals[2] = 0; /* default irq = probe for it */
1528 case 3: /* base,ctl,irq */
1529 hwif->hw.irq = vals[2];
1530 ide_init_hwif_ports(&hwif->hw, (unsigned long) vals[0], (unsigned long) vals[1], &hwif->irq);
1531 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports));
1532 hwif->irq = vals[2];
1534 hwif->chipset = ide_forced;
1535 goto obsolete_option;
1537 case 0: goto bad_option;
1539 printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n");
1544 printk(" -- BAD OPTION\n");
1547 printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n");
1550 printk("-- NOT SUPPORTED ON ide%d", hw);
1556 extern void __init pnpide_init(void);
1557 extern void __exit pnpide_exit(void);
1558 extern void __init h8300_ide_init(void);
1561 * probe_for_hwifs() finds/initializes "known" IDE interfaces
1563 static void __init probe_for_hwifs (void)
1565 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1566 ide_scan_pcibus(ide_scan_direction);
1569 #ifdef CONFIG_ETRAX_IDE
1571 extern void init_e100_ide(void);
1574 #endif /* CONFIG_ETRAX_IDE */
1575 #ifdef CONFIG_BLK_DEV_CMD640
1577 extern void ide_probe_for_cmd640x(void);
1578 ide_probe_for_cmd640x();
1580 #endif /* CONFIG_BLK_DEV_CMD640 */
1581 #ifdef CONFIG_BLK_DEV_IDE_PMAC
1583 extern int pmac_ide_probe(void);
1584 (void)pmac_ide_probe();
1586 #endif /* CONFIG_BLK_DEV_IDE_PMAC */
1587 #ifdef CONFIG_BLK_DEV_GAYLE
1589 extern void gayle_init(void);
1592 #endif /* CONFIG_BLK_DEV_GAYLE */
1593 #ifdef CONFIG_BLK_DEV_FALCON_IDE
1595 extern void falconide_init(void);
1598 #endif /* CONFIG_BLK_DEV_FALCON_IDE */
1599 #ifdef CONFIG_BLK_DEV_MAC_IDE
1601 extern void macide_init(void);
1604 #endif /* CONFIG_BLK_DEV_MAC_IDE */
1605 #ifdef CONFIG_BLK_DEV_Q40IDE
1607 extern void q40ide_init(void);
1610 #endif /* CONFIG_BLK_DEV_Q40IDE */
1611 #ifdef CONFIG_BLK_DEV_BUDDHA
1613 extern void buddha_init(void);
1616 #endif /* CONFIG_BLK_DEV_BUDDHA */
1617 #ifdef CONFIG_BLK_DEV_IDEPNP
1629 EXPORT_SYMBOL(ide_lock);
1631 static int ide_bus_match(struct device *dev, struct device_driver *drv)
1636 static char *media_string(ide_drive_t *drive)
1638 switch (drive->media) {
1654 static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf)
1656 ide_drive_t *drive = to_ide_device(dev);
1657 return sprintf(buf, "%s\n", media_string(drive));
1660 static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf)
1662 ide_drive_t *drive = to_ide_device(dev);
1663 return sprintf(buf, "%s\n", drive->name);
1666 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
1668 ide_drive_t *drive = to_ide_device(dev);
1669 return sprintf(buf, "ide:m-%s\n", media_string(drive));
1672 static struct device_attribute ide_dev_attrs[] = {
1674 __ATTR_RO(drivename),
1675 __ATTR_RO(modalias),
1679 static int ide_uevent(struct device *dev, struct kobj_uevent_env *env)
1681 ide_drive_t *drive = to_ide_device(dev);
1683 add_uevent_var(env, "MEDIA=%s", media_string(drive));
1684 add_uevent_var(env, "DRIVENAME=%s", drive->name);
1685 add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive));
1689 static int generic_ide_probe(struct device *dev)
1691 ide_drive_t *drive = to_ide_device(dev);
1692 ide_driver_t *drv = to_ide_driver(dev->driver);
1694 return drv->probe ? drv->probe(drive) : -ENODEV;
1697 static int generic_ide_remove(struct device *dev)
1699 ide_drive_t *drive = to_ide_device(dev);
1700 ide_driver_t *drv = to_ide_driver(dev->driver);
1708 static void generic_ide_shutdown(struct device *dev)
1710 ide_drive_t *drive = to_ide_device(dev);
1711 ide_driver_t *drv = to_ide_driver(dev->driver);
1713 if (dev->driver && drv->shutdown)
1714 drv->shutdown(drive);
1717 struct bus_type ide_bus_type = {
1719 .match = ide_bus_match,
1720 .uevent = ide_uevent,
1721 .probe = generic_ide_probe,
1722 .remove = generic_ide_remove,
1723 .shutdown = generic_ide_shutdown,
1724 .dev_attrs = ide_dev_attrs,
1725 .suspend = generic_ide_suspend,
1726 .resume = generic_ide_resume,
1729 EXPORT_SYMBOL_GPL(ide_bus_type);
1732 * This is gets invoked once during initialization, to set *everything* up
1734 static int __init ide_init(void)
1738 printk(KERN_INFO "Uniform Multi-Platform E-IDE driver " REVISION "\n");
1739 system_bus_speed = ide_system_bus_speed();
1741 ret = bus_register(&ide_bus_type);
1743 printk(KERN_WARNING "IDE: bus_register error: %d\n", ret);
1751 #ifdef CONFIG_BLK_DEV_ALI14XX
1753 (void)ali14xx_init();
1755 #ifdef CONFIG_BLK_DEV_UMC8672
1757 (void)umc8672_init();
1759 #ifdef CONFIG_BLK_DEV_DTC2278
1761 (void)dtc2278_init();
1763 #ifdef CONFIG_BLK_DEV_HT6560B
1765 (void)ht6560b_init();
1767 #ifdef CONFIG_BLK_DEV_QD65XX
1769 (void)qd65xx_init();
1772 /* Probe for special PCI and other "known" interface chipsets. */
1779 static char *options = NULL;
1780 module_param(options, charp, 0);
1781 MODULE_LICENSE("GPL");
1783 static void __init parse_options (char *line)
1787 if (line == NULL || !*line)
1789 while ((line = next) != NULL) {
1790 if ((next = strchr(line,' ')) != NULL)
1792 if (!ide_setup(line))
1793 printk (KERN_INFO "Unknown option '%s'\n", line);
1797 int __init init_module (void)
1799 parse_options(options);
1803 void __exit cleanup_module (void)
1807 for (index = 0; index < MAX_HWIFS; ++index)
1808 ide_unregister(index);
1810 #ifdef CONFIG_BLK_DEV_IDEPNP
1816 bus_unregister(&ide_bus_type);
1821 __setup("", ide_setup);
1823 module_init(ide_init);