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 hwif->atapi_dma = 0; /* disable all atapi dma */
139 init_completion(&hwif->gendev_rel_comp);
141 default_hwif_iops(hwif);
142 default_hwif_transport(hwif);
143 for (unit = 0; unit < MAX_DRIVES; ++unit) {
144 ide_drive_t *drive = &hwif->drives[unit];
146 drive->media = ide_disk;
147 drive->select.all = (unit<<4)|0xa0;
150 drive->ready_stat = READY_STAT;
151 drive->bad_wstat = BAD_W_STAT;
152 drive->special.b.recalibrate = 1;
153 drive->special.b.set_geometry = 1;
154 drive->name[0] = 'h';
155 drive->name[1] = 'd';
156 drive->name[2] = 'a' + (index * MAX_DRIVES) + unit;
157 drive->max_failures = IDE_DEFAULT_MAX_FAILURES;
158 drive->using_dma = 0;
160 INIT_LIST_HEAD(&drive->list);
161 init_completion(&drive->gendev_rel_comp);
165 static void init_hwif_default(ide_hwif_t *hwif, unsigned int index)
169 memset(&hw, 0, sizeof(hw_regs_t));
171 ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, &hwif->irq);
173 memcpy(&hwif->hw, &hw, sizeof(hw));
174 memcpy(hwif->io_ports, hw.io_ports, sizeof(hw.io_ports));
176 hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET];
177 #ifdef CONFIG_BLK_DEV_HD
178 if (hwif->io_ports[IDE_DATA_OFFSET] == HD_DATA)
179 hwif->noprobe = 1; /* may be overridden by ide_setup() */
183 extern void ide_arm_init(void);
186 * init_ide_data() sets reasonable default values into all fields
187 * of all instances of the hwifs and drives, but only on the first call.
188 * Subsequent calls have no effect (they don't wipe out anything).
190 * This routine is normally called at driver initialization time,
191 * but may also be called MUCH earlier during kernel "command-line"
192 * parameter processing. As such, we cannot depend on any other parts
193 * of the kernel (such as memory allocation) to be functioning yet.
195 * This is too bad, as otherwise we could dynamically allocate the
196 * ide_drive_t structs as needed, rather than always consuming memory
197 * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them.
199 * FIXME: We should stuff the setup data into __init and copy the
200 * relevant hwifs/allocate them properly during boot.
202 #define MAGIC_COOKIE 0x12345678
203 static void __init init_ide_data (void)
207 static unsigned long magic_cookie = MAGIC_COOKIE;
209 if (magic_cookie != MAGIC_COOKIE)
210 return; /* already initialized */
213 /* Initialise all interface structures */
214 for (index = 0; index < MAX_HWIFS; ++index) {
215 hwif = &ide_hwifs[index];
216 init_hwif_data(hwif, index);
217 init_hwif_default(hwif, index);
218 #if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI)
219 hwif->irq = hwif->hw.irq =
220 ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]);
223 #ifdef CONFIG_IDE_ARM
229 * ide_system_bus_speed - guess bus speed
231 * ide_system_bus_speed() returns what we think is the system VESA/PCI
232 * bus speed (in MHz). This is used for calculating interface PIO timings.
233 * The default is 40 for known PCI systems, 50 otherwise.
234 * The "idebus=xx" parameter can be used to override this value.
235 * The actual value to be used is computed/displayed the first time
236 * through. Drivers should only use this as a last resort.
238 * Returns a guessed speed in MHz.
241 static int ide_system_bus_speed(void)
244 static struct pci_device_id pci_default[] = {
245 { PCI_DEVICE(PCI_ANY_ID, PCI_ANY_ID) },
249 #define pci_default 0
250 #endif /* CONFIG_PCI */
252 if (!system_bus_speed) {
253 if (idebus_parameter) {
254 /* user supplied value */
255 system_bus_speed = idebus_parameter;
256 } else if (pci_dev_present(pci_default)) {
257 /* safe default value for PCI */
258 system_bus_speed = 33;
260 /* safe default value for VESA and PCI */
261 system_bus_speed = 50;
263 printk(KERN_INFO "ide: Assuming %dMHz system bus speed "
264 "for PIO modes%s\n", system_bus_speed,
265 idebus_parameter ? "" : "; override with idebus=xx");
267 return system_bus_speed;
270 static struct resource* hwif_request_region(ide_hwif_t *hwif,
271 unsigned long addr, int num)
273 struct resource *res = request_region(addr, num, hwif->name);
276 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
277 hwif->name, addr, addr+num-1);
282 * ide_hwif_request_regions - request resources for IDE
283 * @hwif: interface to use
285 * Requests all the needed resources for an interface.
286 * Right now core IDE code does this work which is deeply wrong.
287 * MMIO leaves it to the controller driver,
288 * PIO will migrate this way over time.
291 int ide_hwif_request_regions(ide_hwif_t *hwif)
298 addr = hwif->io_ports[IDE_CONTROL_OFFSET];
299 if (addr && !hwif_request_region(hwif, addr, 1))
300 goto control_region_busy;
302 addr = hwif->io_ports[IDE_DATA_OFFSET];
303 if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) {
304 if (!hwif_request_region(hwif, addr, 8))
305 goto data_region_busy;
309 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
310 addr = hwif->io_ports[i];
311 if (!hwif_request_region(hwif, addr, 1)) {
313 release_region(addr, 1);
314 goto data_region_busy;
320 addr = hwif->io_ports[IDE_CONTROL_OFFSET];
322 release_region(addr, 1);
324 /* If any errors are return, we drop the hwif interface. */
329 * ide_hwif_release_regions - free IDE resources
331 * Note that we only release the standard ports,
332 * and do not even try to handle any extra ports
333 * allocated for weird IDE interface chipsets.
335 * Note also that we don't yet handle mmio resources here. More
336 * importantly our caller should be doing this so we need to
337 * restructure this as a helper function for drivers.
340 void ide_hwif_release_regions(ide_hwif_t *hwif)
346 if (hwif->io_ports[IDE_CONTROL_OFFSET])
347 release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1);
348 if (hwif->straight8) {
349 release_region(hwif->io_ports[IDE_DATA_OFFSET], 8);
352 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
353 if (hwif->io_ports[i])
354 release_region(hwif->io_ports[i], 1);
358 * ide_hwif_restore - restore hwif to template
359 * @hwif: hwif to update
360 * @tmp_hwif: template
362 * Restore hwif to a previous state by copying most settings
366 static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
368 hwif->hwgroup = tmp_hwif->hwgroup;
370 hwif->gendev.parent = tmp_hwif->gendev.parent;
372 hwif->proc = tmp_hwif->proc;
374 hwif->major = tmp_hwif->major;
375 hwif->straight8 = tmp_hwif->straight8;
376 hwif->bus_state = tmp_hwif->bus_state;
378 hwif->host_flags = tmp_hwif->host_flags;
380 hwif->pio_mask = tmp_hwif->pio_mask;
382 hwif->atapi_dma = tmp_hwif->atapi_dma;
383 hwif->ultra_mask = tmp_hwif->ultra_mask;
384 hwif->mwdma_mask = tmp_hwif->mwdma_mask;
385 hwif->swdma_mask = tmp_hwif->swdma_mask;
387 hwif->cbl = tmp_hwif->cbl;
389 hwif->chipset = tmp_hwif->chipset;
390 hwif->hold = tmp_hwif->hold;
392 #ifdef CONFIG_BLK_DEV_IDEPCI
393 hwif->pci_dev = tmp_hwif->pci_dev;
394 hwif->cds = tmp_hwif->cds;
397 hwif->set_pio_mode = tmp_hwif->set_pio_mode;
398 hwif->set_dma_mode = tmp_hwif->set_dma_mode;
399 hwif->mdma_filter = tmp_hwif->mdma_filter;
400 hwif->udma_filter = tmp_hwif->udma_filter;
401 hwif->selectproc = tmp_hwif->selectproc;
402 hwif->reset_poll = tmp_hwif->reset_poll;
403 hwif->pre_reset = tmp_hwif->pre_reset;
404 hwif->resetproc = tmp_hwif->resetproc;
405 hwif->intrproc = tmp_hwif->intrproc;
406 hwif->maskproc = tmp_hwif->maskproc;
407 hwif->quirkproc = tmp_hwif->quirkproc;
408 hwif->busproc = tmp_hwif->busproc;
410 hwif->ata_input_data = tmp_hwif->ata_input_data;
411 hwif->ata_output_data = tmp_hwif->ata_output_data;
412 hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes;
413 hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes;
415 hwif->dma_setup = tmp_hwif->dma_setup;
416 hwif->dma_exec_cmd = tmp_hwif->dma_exec_cmd;
417 hwif->dma_start = tmp_hwif->dma_start;
418 hwif->ide_dma_end = tmp_hwif->ide_dma_end;
419 hwif->ide_dma_on = tmp_hwif->ide_dma_on;
420 hwif->dma_off_quietly = tmp_hwif->dma_off_quietly;
421 hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq;
422 hwif->ide_dma_clear_irq = tmp_hwif->ide_dma_clear_irq;
423 hwif->dma_host_on = tmp_hwif->dma_host_on;
424 hwif->dma_host_off = tmp_hwif->dma_host_off;
425 hwif->dma_lost_irq = tmp_hwif->dma_lost_irq;
426 hwif->dma_timeout = tmp_hwif->dma_timeout;
428 hwif->OUTB = tmp_hwif->OUTB;
429 hwif->OUTBSYNC = tmp_hwif->OUTBSYNC;
430 hwif->OUTW = tmp_hwif->OUTW;
431 hwif->OUTSW = tmp_hwif->OUTSW;
432 hwif->OUTSL = tmp_hwif->OUTSL;
434 hwif->INB = tmp_hwif->INB;
435 hwif->INW = tmp_hwif->INW;
436 hwif->INSW = tmp_hwif->INSW;
437 hwif->INSL = tmp_hwif->INSL;
439 hwif->sg_max_nents = tmp_hwif->sg_max_nents;
441 hwif->mmio = tmp_hwif->mmio;
442 hwif->rqsize = tmp_hwif->rqsize;
443 hwif->no_lba48 = tmp_hwif->no_lba48;
445 #ifndef CONFIG_BLK_DEV_IDECS
446 hwif->irq = tmp_hwif->irq;
449 hwif->dma_base = tmp_hwif->dma_base;
450 hwif->dma_master = tmp_hwif->dma_master;
451 hwif->dma_command = tmp_hwif->dma_command;
452 hwif->dma_vendor1 = tmp_hwif->dma_vendor1;
453 hwif->dma_status = tmp_hwif->dma_status;
454 hwif->dma_vendor3 = tmp_hwif->dma_vendor3;
455 hwif->dma_prdtable = tmp_hwif->dma_prdtable;
457 hwif->config_data = tmp_hwif->config_data;
458 hwif->select_data = tmp_hwif->select_data;
459 hwif->extra_base = tmp_hwif->extra_base;
460 hwif->extra_ports = tmp_hwif->extra_ports;
461 hwif->autodma = tmp_hwif->autodma;
463 hwif->hwif_data = tmp_hwif->hwif_data;
467 * ide_unregister - free an IDE interface
468 * @index: index of interface (will change soon to a pointer)
470 * Perform the final unregister of an IDE interface. At the moment
471 * we don't refcount interfaces so this will also get split up.
474 * The caller must not hold the IDE locks
475 * The drive present/vanishing is not yet properly locked
476 * Take care with the callbacks. These have been split to avoid
477 * deadlocking the IDE layer. The shutdown callback is called
478 * before we take the lock and free resources. It is up to the
479 * caller to be sure there is no pending I/O here, and that
480 * the interface will not be reopened (present/vanishing locking
481 * isn't yet done BTW). After we commit to the final kill we
482 * call the cleanup callback with the ide locks held.
484 * Unregister restores the hwif structures to the default state.
485 * This is raving bonkers.
488 void ide_unregister(unsigned int index)
491 ide_hwif_t *hwif, *g;
492 static ide_hwif_t tmp_hwif; /* protected by ide_cfg_mtx */
493 ide_hwgroup_t *hwgroup;
494 int irq_count = 0, unit;
496 BUG_ON(index >= MAX_HWIFS);
498 BUG_ON(in_interrupt());
499 BUG_ON(irqs_disabled());
500 mutex_lock(&ide_cfg_mtx);
501 spin_lock_irq(&ide_lock);
502 hwif = &ide_hwifs[index];
505 for (unit = 0; unit < MAX_DRIVES; ++unit) {
506 drive = &hwif->drives[unit];
509 spin_unlock_irq(&ide_lock);
510 device_unregister(&drive->gendev);
511 wait_for_completion(&drive->gendev_rel_comp);
512 spin_lock_irq(&ide_lock);
516 spin_unlock_irq(&ide_lock);
518 ide_proc_unregister_port(hwif);
520 hwgroup = hwif->hwgroup;
522 * free the irq if we were the only hwif using it
526 if (g->irq == hwif->irq)
529 } while (g != hwgroup->hwif);
531 free_irq(hwif->irq, hwgroup);
533 spin_lock_irq(&ide_lock);
535 * Note that we only release the standard ports,
536 * and do not even try to handle any extra ports
537 * allocated for weird IDE interface chipsets.
539 ide_hwif_release_regions(hwif);
542 * Remove us from the hwgroup, and free
543 * the hwgroup if we were the only member
545 if (hwif->next == hwif) {
546 BUG_ON(hwgroup->hwif != hwif);
549 /* There is another interface in hwgroup.
550 * Unlink us, and set hwgroup->drive and ->hwif to
554 while (g->next != hwif)
556 g->next = hwif->next;
557 if (hwgroup->hwif == hwif) {
558 /* Chose a random hwif for hwgroup->hwif.
559 * It's guaranteed that there are no drives
560 * left in the hwgroup.
562 BUG_ON(hwgroup->drive != NULL);
565 BUG_ON(hwgroup->hwif == hwif);
568 /* More messed up locking ... */
569 spin_unlock_irq(&ide_lock);
570 device_unregister(&hwif->gendev);
571 wait_for_completion(&hwif->gendev_rel_comp);
574 * Remove us from the kernel's knowledge
576 blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS);
577 kfree(hwif->sg_table);
578 unregister_blkdev(hwif->major, hwif->name);
579 spin_lock_irq(&ide_lock);
581 if (hwif->dma_base) {
582 (void) ide_release_dma(hwif);
585 hwif->dma_master = 0;
586 hwif->dma_command = 0;
587 hwif->dma_vendor1 = 0;
588 hwif->dma_status = 0;
589 hwif->dma_vendor3 = 0;
590 hwif->dma_prdtable = 0;
592 hwif->extra_base = 0;
593 hwif->extra_ports = 0;
596 /* copy original settings */
599 /* restore hwif data to pristine status */
600 init_hwif_data(hwif, index);
601 init_hwif_default(hwif, index);
603 ide_hwif_restore(hwif, &tmp_hwif);
606 spin_unlock_irq(&ide_lock);
607 mutex_unlock(&ide_cfg_mtx);
610 EXPORT_SYMBOL(ide_unregister);
614 * ide_setup_ports - set up IDE interface ports
615 * @hw: register descriptions
616 * @base: base register
617 * @offsets: table of register offsets
618 * @ctrl: control register
620 * @irq: interrupt lie
622 * Setup hw_regs_t structure described by parameters. You
623 * may set up the hw structure yourself OR use this routine to
624 * do it for you. This is basically a helper
628 void ide_setup_ports ( hw_regs_t *hw,
629 unsigned long base, int *offsets,
630 unsigned long ctrl, unsigned long intr,
631 ide_ack_intr_t *ack_intr,
633 * ide_io_ops_t *iops,
639 memset(hw, 0, sizeof(hw_regs_t));
640 for (i = 0; i < IDE_NR_PORTS; i++) {
641 if (offsets[i] == -1) {
643 case IDE_CONTROL_OFFSET:
644 hw->io_ports[i] = ctrl;
646 #if defined(CONFIG_AMIGA) || defined(CONFIG_MAC)
648 hw->io_ports[i] = intr;
650 #endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */
656 hw->io_ports[i] = base + offsets[i];
661 hw->ack_intr = ack_intr;
668 * ide_register_hw_with_fixup - register IDE interface
669 * @hw: hardware registers
670 * @initializing: set while initializing built-in drivers
671 * @hwifp: pointer to returned hwif
672 * @fixup: fixup function
674 * Register an IDE interface, specifying exactly the registers etc.
675 * Set init=1 iff calling before probes have taken place.
677 * Returns -1 on error.
680 int ide_register_hw_with_fixup(hw_regs_t *hw, int initializing,
682 void(*fixup)(ide_hwif_t *hwif))
684 int index, retry = 1;
688 for (index = 0; index < MAX_HWIFS; ++index) {
689 hwif = &ide_hwifs[index];
690 if (hwif->hw.io_ports[IDE_DATA_OFFSET] == hw->io_ports[IDE_DATA_OFFSET])
693 for (index = 0; index < MAX_HWIFS; ++index) {
694 hwif = &ide_hwifs[index];
697 if ((!hwif->present && !hwif->mate && !initializing) ||
698 (!hwif->hw.io_ports[IDE_DATA_OFFSET] && initializing))
701 for (index = 0; index < MAX_HWIFS; index++)
702 ide_unregister(index);
707 ide_unregister(index);
708 else if (!hwif->hold) {
709 init_hwif_data(hwif, index);
710 init_hwif_default(hwif, index);
714 memcpy(&hwif->hw, hw, sizeof(*hw));
715 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->hw.io_ports));
718 hwif->chipset = hw->chipset;
719 hwif->gendev.parent = hw->dev;
722 probe_hwif_init_with_fixup(hwif, fixup);
723 ide_proc_register_port(hwif);
729 return (initializing || hwif->present) ? index : -1;
732 EXPORT_SYMBOL(ide_register_hw_with_fixup);
734 int ide_register_hw(hw_regs_t *hw, int initializing, ide_hwif_t **hwifp)
736 return ide_register_hw_with_fixup(hw, initializing, hwifp, NULL);
739 EXPORT_SYMBOL(ide_register_hw);
742 * Locks for IDE setting functionality
745 DEFINE_MUTEX(ide_setting_mtx);
747 EXPORT_SYMBOL_GPL(ide_setting_mtx);
750 * ide_spin_wait_hwgroup - wait for group
751 * @drive: drive in the group
753 * Wait for an IDE device group to go non busy and then return
754 * holding the ide_lock which guards the hwgroup->busy status
755 * and right to use it.
758 int ide_spin_wait_hwgroup (ide_drive_t *drive)
760 ide_hwgroup_t *hwgroup = HWGROUP(drive);
761 unsigned long timeout = jiffies + (3 * HZ);
763 spin_lock_irq(&ide_lock);
765 while (hwgroup->busy) {
766 unsigned long lflags;
767 spin_unlock_irq(&ide_lock);
768 local_irq_set(lflags);
769 if (time_after(jiffies, timeout)) {
770 local_irq_restore(lflags);
771 printk(KERN_ERR "%s: channel busy\n", drive->name);
774 local_irq_restore(lflags);
775 spin_lock_irq(&ide_lock);
780 EXPORT_SYMBOL(ide_spin_wait_hwgroup);
782 int set_io_32bit(ide_drive_t *drive, int arg)
784 if (drive->no_io_32bit)
787 if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1))
790 drive->io_32bit = arg;
791 #ifdef CONFIG_BLK_DEV_DTC2278
792 if (HWIF(drive)->chipset == ide_dtc2278)
793 HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg;
794 #endif /* CONFIG_BLK_DEV_DTC2278 */
798 static int set_ksettings(ide_drive_t *drive, int arg)
800 if (arg < 0 || arg > 1)
803 if (ide_spin_wait_hwgroup(drive))
805 drive->keep_settings = arg;
806 spin_unlock_irq(&ide_lock);
811 int set_using_dma(ide_drive_t *drive, int arg)
813 #ifdef CONFIG_BLK_DEV_IDEDMA
814 ide_hwif_t *hwif = drive->hwif;
817 if (arg < 0 || arg > 1)
820 if (!drive->id || !(drive->id->capability & 1))
823 if (hwif->ide_dma_on == NULL)
827 if (ide_spin_wait_hwgroup(drive))
830 * set ->busy flag, unlock and let it ride
832 hwif->hwgroup->busy = 1;
833 spin_unlock_irq(&ide_lock);
838 hwif->dma_off_quietly(drive);
839 if (ide_set_dma(drive) || hwif->ide_dma_on(drive))
845 * lock, clear ->busy flag and unlock before leaving
847 spin_lock_irq(&ide_lock);
848 hwif->hwgroup->busy = 0;
849 spin_unlock_irq(&ide_lock);
853 if (arg < 0 || arg > 1)
860 int set_pio_mode(ide_drive_t *drive, int arg)
864 if (arg < 0 || arg > 255)
867 if (drive->hwif->set_pio_mode == NULL)
870 if (drive->special.b.set_tune)
872 ide_init_drive_cmd(&rq);
873 drive->tune_req = (u8) arg;
874 drive->special.b.set_tune = 1;
875 (void) ide_do_drive_cmd(drive, &rq, ide_wait);
879 static int set_unmaskirq(ide_drive_t *drive, int arg)
881 if (drive->no_unmask)
884 if (arg < 0 || arg > 1)
887 if (ide_spin_wait_hwgroup(drive))
890 spin_unlock_irq(&ide_lock);
896 * system_bus_clock - clock guess
898 * External version of the bus clock guess used by very old IDE drivers
899 * for things like VLB timings. Should not be used.
902 int system_bus_clock (void)
904 return((int) ((!system_bus_speed) ? ide_system_bus_speed() : system_bus_speed ));
907 EXPORT_SYMBOL(system_bus_clock);
909 static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
911 ide_drive_t *drive = dev->driver_data;
912 ide_hwif_t *hwif = HWIF(drive);
914 struct request_pm_state rqpm;
918 /* Call ACPI _GTM only once */
919 if (!(drive->dn % 2))
920 ide_acpi_get_timing(hwif);
922 memset(&rq, 0, sizeof(rq));
923 memset(&rqpm, 0, sizeof(rqpm));
924 memset(&args, 0, sizeof(args));
925 rq.cmd_type = REQ_TYPE_PM_SUSPEND;
928 rqpm.pm_step = ide_pm_state_start_suspend;
929 if (mesg.event == PM_EVENT_PRETHAW)
930 mesg.event = PM_EVENT_FREEZE;
931 rqpm.pm_state = mesg.event;
933 ret = ide_do_drive_cmd(drive, &rq, ide_wait);
934 /* only call ACPI _PS3 after both drivers are suspended */
935 if (!ret && (((drive->dn % 2) && hwif->drives[0].present
936 && hwif->drives[1].present)
937 || !hwif->drives[0].present
938 || !hwif->drives[1].present))
939 ide_acpi_set_state(hwif, 0);
943 static int generic_ide_resume(struct device *dev)
945 ide_drive_t *drive = dev->driver_data;
946 ide_hwif_t *hwif = HWIF(drive);
948 struct request_pm_state rqpm;
952 /* Call ACPI _STM only once */
953 if (!(drive->dn % 2)) {
954 ide_acpi_set_state(hwif, 1);
955 ide_acpi_push_timing(hwif);
958 ide_acpi_exec_tfs(drive);
960 memset(&rq, 0, sizeof(rq));
961 memset(&rqpm, 0, sizeof(rqpm));
962 memset(&args, 0, sizeof(args));
963 rq.cmd_type = REQ_TYPE_PM_RESUME;
966 rqpm.pm_step = ide_pm_state_start_resume;
967 rqpm.pm_state = PM_EVENT_ON;
969 err = ide_do_drive_cmd(drive, &rq, ide_head_wait);
971 if (err == 0 && dev->driver) {
972 ide_driver_t *drv = to_ide_driver(dev->driver);
981 int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev,
982 unsigned int cmd, unsigned long arg)
986 void __user *p = (void __user *)arg;
987 int err = 0, (*setfunc)(ide_drive_t *, int);
991 case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val;
992 case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val;
993 case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val;
994 case HDIO_GET_DMA: val = &drive->using_dma; goto read_val;
995 case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val;
996 case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val;
997 case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val;
998 case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val;
999 case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val;
1003 case HDIO_OBSOLETE_IDENTITY:
1004 case HDIO_GET_IDENTITY:
1005 if (bdev != bdev->bd_contains)
1007 if (drive->id_read == 0)
1009 if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142))
1014 return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP |
1015 drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP |
1016 drive->nice0 << IDE_NICE_0 |
1017 drive->nice1 << IDE_NICE_1 |
1018 drive->nice2 << IDE_NICE_2,
1019 (long __user *) arg);
1021 #ifdef CONFIG_IDE_TASK_IOCTL
1022 case HDIO_DRIVE_TASKFILE:
1023 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
1025 switch(drive->media) {
1027 return ide_taskfile_ioctl(drive, cmd, arg);
1031 #endif /* CONFIG_IDE_TASK_IOCTL */
1033 case HDIO_DRIVE_CMD:
1034 if (!capable(CAP_SYS_RAWIO))
1036 return ide_cmd_ioctl(drive, cmd, arg);
1038 case HDIO_DRIVE_TASK:
1039 if (!capable(CAP_SYS_RAWIO))
1041 return ide_task_ioctl(drive, cmd, arg);
1043 case HDIO_SCAN_HWIF:
1047 if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1048 if (copy_from_user(args, p, 3 * sizeof(int)))
1050 memset(&hw, 0, sizeof(hw));
1051 ide_init_hwif_ports(&hw, (unsigned long) args[0],
1052 (unsigned long) args[1], NULL);
1054 if (ide_register_hw(&hw, 0, NULL) == -1)
1058 case HDIO_UNREGISTER_HWIF:
1059 if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1060 /* (arg > MAX_HWIFS) checked in function */
1061 ide_unregister(arg);
1064 if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1065 if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1))))
1067 drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1;
1068 drv = *(ide_driver_t **)bdev->bd_disk->private_data;
1069 if (drive->dsc_overlap && !drv->supports_dsc_overlap) {
1070 drive->dsc_overlap = 0;
1073 drive->nice1 = (arg >> IDE_NICE_1) & 1;
1075 case HDIO_DRIVE_RESET:
1077 unsigned long flags;
1078 if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1081 * Abort the current command on the
1082 * group if there is one, taking
1083 * care not to allow anything else
1084 * to be queued and to die on the
1085 * spot if we miss one somehow
1088 spin_lock_irqsave(&ide_lock, flags);
1090 if (HWGROUP(drive)->resetting) {
1091 spin_unlock_irqrestore(&ide_lock, flags);
1095 ide_abort(drive, "drive reset");
1097 BUG_ON(HWGROUP(drive)->handler);
1099 /* Ensure nothing gets queued after we
1100 drop the lock. Reset will clear the busy */
1102 HWGROUP(drive)->busy = 1;
1103 spin_unlock_irqrestore(&ide_lock, flags);
1104 (void) ide_do_reset(drive);
1109 case HDIO_GET_BUSSTATE:
1110 if (!capable(CAP_SYS_ADMIN))
1112 if (put_user(HWIF(drive)->bus_state, (long __user *)arg))
1116 case HDIO_SET_BUSSTATE:
1117 if (!capable(CAP_SYS_ADMIN))
1119 if (HWIF(drive)->busproc)
1120 return HWIF(drive)->busproc(drive, (int)arg);
1127 mutex_lock(&ide_setting_mtx);
1128 spin_lock_irqsave(&ide_lock, flags);
1130 spin_unlock_irqrestore(&ide_lock, flags);
1131 mutex_unlock(&ide_setting_mtx);
1132 return err >= 0 ? put_user(err, (long __user *)arg) : err;
1135 if (bdev != bdev->bd_contains)
1138 if (!capable(CAP_SYS_ADMIN))
1141 mutex_lock(&ide_setting_mtx);
1142 err = setfunc(drive, arg);
1143 mutex_unlock(&ide_setting_mtx);
1149 EXPORT_SYMBOL(generic_ide_ioctl);
1152 * stridx() returns the offset of c within s,
1153 * or -1 if c is '\0' or not found within s.
1155 static int __init stridx (const char *s, char c)
1157 char *i = strchr(s, c);
1158 return (i && c) ? i - s : -1;
1162 * match_parm() does parsing for ide_setup():
1164 * 1. the first char of s must be '='.
1165 * 2. if the remainder matches one of the supplied keywords,
1166 * the index (1 based) of the keyword is negated and returned.
1167 * 3. if the remainder is a series of no more than max_vals numbers
1168 * separated by commas, the numbers are saved in vals[] and a
1169 * count of how many were saved is returned. Base10 is assumed,
1170 * and base16 is allowed when prefixed with "0x".
1171 * 4. otherwise, zero is returned.
1173 static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals)
1175 static const char *decimal = "0123456789";
1176 static const char *hex = "0123456789abcdef";
1181 * Try matching against the supplied keywords,
1182 * and return -(index+1) if we match one
1184 if (keywords != NULL) {
1185 for (i = 0; *keywords != NULL; ++i) {
1186 if (!strcmp(s, *keywords++))
1191 * Look for a series of no more than "max_vals"
1192 * numeric values separated by commas, in base10,
1193 * or base16 when prefixed with "0x".
1194 * Return a count of how many were found.
1196 for (n = 0; (i = stridx(decimal, *s)) >= 0;) {
1198 while ((i = stridx(decimal, *++s)) >= 0)
1199 vals[n] = (vals[n] * 10) + i;
1200 if (*s == 'x' && !vals[n]) {
1201 while ((i = stridx(hex, *++s)) >= 0)
1202 vals[n] = (vals[n] * 0x10) + i;
1204 if (++n == max_vals)
1206 if (*s == ',' || *s == ';')
1212 return 0; /* zero = nothing matched */
1215 #ifdef CONFIG_BLK_DEV_ALI14XX
1216 extern int probe_ali14xx;
1217 extern int ali14xx_init(void);
1219 #ifdef CONFIG_BLK_DEV_UMC8672
1220 extern int probe_umc8672;
1221 extern int umc8672_init(void);
1223 #ifdef CONFIG_BLK_DEV_DTC2278
1224 extern int probe_dtc2278;
1225 extern int dtc2278_init(void);
1227 #ifdef CONFIG_BLK_DEV_HT6560B
1228 extern int probe_ht6560b;
1229 extern int ht6560b_init(void);
1231 #ifdef CONFIG_BLK_DEV_QD65XX
1232 extern int probe_qd65xx;
1233 extern int qd65xx_init(void);
1236 static int __initdata is_chipset_set[MAX_HWIFS];
1239 * ide_setup() gets called VERY EARLY during initialization,
1240 * to handle kernel "command line" strings beginning with "hdx=" or "ide".
1242 * Remember to update Documentation/ide.txt if you change something here.
1244 static int __init ide_setup(char *s)
1249 unsigned int hw, unit;
1250 const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1);
1251 const char max_hwif = '0' + (MAX_HWIFS - 1);
1254 if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */
1255 return 0; /* driver and not us */
1257 if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2))
1260 printk(KERN_INFO "ide_setup: %s", s);
1263 #ifdef CONFIG_BLK_DEV_IDEDOUBLER
1264 if (!strcmp(s, "ide=doubler")) {
1265 extern int ide_doubler;
1267 printk(" : Enabled support for IDE doublers\n");
1271 #endif /* CONFIG_BLK_DEV_IDEDOUBLER */
1273 if (!strcmp(s, "ide=nodma")) {
1274 printk(" : Prevented DMA\n");
1279 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1280 if (!strcmp(s, "ide=reverse")) {
1281 ide_scan_direction = 1;
1282 printk(" : Enabled support for IDE inverse scan order.\n");
1287 #ifdef CONFIG_BLK_DEV_IDEACPI
1288 if (!strcmp(s, "ide=noacpi")) {
1289 //printk(" : Disable IDE ACPI support.\n");
1293 if (!strcmp(s, "ide=acpigtf")) {
1294 //printk(" : Enable IDE ACPI _GTF support.\n");
1298 if (!strcmp(s, "ide=acpionboot")) {
1299 //printk(" : Call IDE ACPI methods on boot.\n");
1300 ide_noacpionboot = 0;
1303 #endif /* CONFIG_BLK_DEV_IDEACPI */
1306 * Look for drive options: "hdx="
1308 if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) {
1309 const char *hd_words[] = {
1310 "none", "noprobe", "nowerr", "cdrom", "minus5",
1311 "autotune", "noautotune", "minus8", "swapdata", "bswap",
1312 "noflush", "remap", "remap63", "scsi", NULL };
1314 hw = unit / MAX_DRIVES;
1315 unit = unit % MAX_DRIVES;
1316 hwif = &ide_hwifs[hw];
1317 drive = &hwif->drives[unit];
1318 if (strncmp(s + 4, "ide-", 4) == 0) {
1319 strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req));
1322 switch (match_parm(&s[3], hd_words, vals, 3)) {
1323 case -1: /* "none" */
1324 case -2: /* "noprobe" */
1327 case -3: /* "nowerr" */
1328 drive->bad_wstat = BAD_R_STAT;
1331 case -4: /* "cdrom" */
1333 drive->media = ide_cdrom;
1334 /* an ATAPI device ignores DRDY */
1335 drive->ready_stat = 0;
1338 case -6: /* "autotune" */
1339 drive->autotune = IDE_TUNE_AUTO;
1340 goto obsolete_option;
1341 case -7: /* "noautotune" */
1342 drive->autotune = IDE_TUNE_NOAUTO;
1343 goto obsolete_option;
1344 case -9: /* "swapdata" */
1345 case -10: /* "bswap" */
1348 case -11: /* noflush */
1351 case -12: /* "remap" */
1352 drive->remap_0_to_1 = 1;
1354 case -13: /* "remap63" */
1357 case -14: /* "scsi" */
1360 case 3: /* cyl,head,sect */
1361 drive->media = ide_disk;
1362 drive->ready_stat = READY_STAT;
1363 drive->cyl = drive->bios_cyl = vals[0];
1364 drive->head = drive->bios_head = vals[1];
1365 drive->sect = drive->bios_sect = vals[2];
1367 drive->forced_geom = 1;
1375 if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e')
1378 * Look for bus speed option: "idebus="
1380 if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') {
1381 if (match_parm(&s[6], NULL, vals, 1) != 1)
1383 if (vals[0] >= 20 && vals[0] <= 66) {
1384 idebus_parameter = vals[0];
1386 printk(" -- BAD BUS SPEED! Expected value from 20 to 66");
1390 * Look for interface options: "idex="
1392 if (s[3] >= '0' && s[3] <= max_hwif) {
1394 * Be VERY CAREFUL changing this: note hardcoded indexes below
1395 * (-8, -9, -10) are reserved to ease the hardcoding.
1397 static const char *ide_words[] = {
1398 "noprobe", "serialize", "minus3", "minus4",
1399 "reset", "minus6", "ata66", "minus8", "minus9",
1400 "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb",
1401 "dtc2278", "umc8672", "ali14xx", NULL };
1403 hwif = &ide_hwifs[hw];
1404 i = match_parm(&s[4], ide_words, vals, 3);
1407 * Cryptic check to ensure chipset not already set for hwif.
1408 * Note: we can't depend on hwif->chipset here.
1410 if ((i >= -18 && i <= -11) || (i > 0 && i <= 3)) {
1411 /* chipset already specified */
1412 if (is_chipset_set[hw])
1414 if (i > -18 && i <= -11) {
1415 /* these drivers are for "ide0=" only */
1418 /* chipset already specified for 2nd port */
1419 if (is_chipset_set[hw+1])
1422 is_chipset_set[hw] = 1;
1427 #ifdef CONFIG_BLK_DEV_ALI14XX
1428 case -17: /* "ali14xx" */
1432 #ifdef CONFIG_BLK_DEV_UMC8672
1433 case -16: /* "umc8672" */
1437 #ifdef CONFIG_BLK_DEV_DTC2278
1438 case -15: /* "dtc2278" */
1442 #ifdef CONFIG_BLK_DEV_CMD640
1443 case -14: /* "cmd640_vlb" */
1445 extern int cmd640_vlb; /* flag for cmd640.c */
1450 #ifdef CONFIG_BLK_DEV_HT6560B
1451 case -13: /* "ht6560b" */
1455 #ifdef CONFIG_BLK_DEV_QD65XX
1456 case -12: /* "qd65xx" */
1460 #ifdef CONFIG_BLK_DEV_4DRIVES
1461 case -11: /* "four" drives on one set of ports */
1463 ide_hwif_t *mate = &ide_hwifs[hw^1];
1464 mate->drives[0].select.all ^= 0x20;
1465 mate->drives[1].select.all ^= 0x20;
1466 hwif->chipset = mate->chipset = ide_4drives;
1467 mate->irq = hwif->irq;
1468 memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports));
1471 hwif->serialized = mate->serialized = 1;
1472 goto obsolete_option;
1474 #endif /* CONFIG_BLK_DEV_4DRIVES */
1475 case -10: /* minus10 */
1476 case -9: /* minus9 */
1477 case -8: /* minus8 */
1482 case -7: /* ata66 */
1483 #ifdef CONFIG_BLK_DEV_IDEPCI
1485 * Use ATA_CBL_PATA40_SHORT so drive side
1486 * cable detection is also overriden.
1488 hwif->cbl = ATA_CBL_PATA40_SHORT;
1489 goto obsolete_option;
1493 case -5: /* "reset" */
1495 goto obsolete_option;
1496 case -2: /* "serialize" */
1497 hwif->mate = &ide_hwifs[hw^1];
1498 hwif->mate->mate = hwif;
1499 hwif->serialized = hwif->mate->serialized = 1;
1500 goto obsolete_option;
1502 case -1: /* "noprobe" */
1507 vals[1] = vals[0] + 0x206; /* default ctl */
1508 case 2: /* base,ctl */
1509 vals[2] = 0; /* default irq = probe for it */
1510 case 3: /* base,ctl,irq */
1511 hwif->hw.irq = vals[2];
1512 ide_init_hwif_ports(&hwif->hw, (unsigned long) vals[0], (unsigned long) vals[1], &hwif->irq);
1513 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports));
1514 hwif->irq = vals[2];
1516 hwif->chipset = ide_forced;
1517 goto obsolete_option;
1519 case 0: goto bad_option;
1521 printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n");
1526 printk(" -- BAD OPTION\n");
1529 printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n");
1532 printk("-- NOT SUPPORTED ON ide%d", hw);
1538 extern void __init pnpide_init(void);
1539 extern void __exit pnpide_exit(void);
1540 extern void __init h8300_ide_init(void);
1543 * probe_for_hwifs() finds/initializes "known" IDE interfaces
1545 static void __init probe_for_hwifs (void)
1547 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1548 ide_scan_pcibus(ide_scan_direction);
1551 #ifdef CONFIG_ETRAX_IDE
1553 extern void init_e100_ide(void);
1556 #endif /* CONFIG_ETRAX_IDE */
1557 #ifdef CONFIG_BLK_DEV_CMD640
1559 extern void ide_probe_for_cmd640x(void);
1560 ide_probe_for_cmd640x();
1562 #endif /* CONFIG_BLK_DEV_CMD640 */
1563 #ifdef CONFIG_BLK_DEV_IDE_PMAC
1565 extern int pmac_ide_probe(void);
1566 (void)pmac_ide_probe();
1568 #endif /* CONFIG_BLK_DEV_IDE_PMAC */
1569 #ifdef CONFIG_BLK_DEV_GAYLE
1571 extern void gayle_init(void);
1574 #endif /* CONFIG_BLK_DEV_GAYLE */
1575 #ifdef CONFIG_BLK_DEV_FALCON_IDE
1577 extern void falconide_init(void);
1580 #endif /* CONFIG_BLK_DEV_FALCON_IDE */
1581 #ifdef CONFIG_BLK_DEV_MAC_IDE
1583 extern void macide_init(void);
1586 #endif /* CONFIG_BLK_DEV_MAC_IDE */
1587 #ifdef CONFIG_BLK_DEV_Q40IDE
1589 extern void q40ide_init(void);
1592 #endif /* CONFIG_BLK_DEV_Q40IDE */
1593 #ifdef CONFIG_BLK_DEV_BUDDHA
1595 extern void buddha_init(void);
1598 #endif /* CONFIG_BLK_DEV_BUDDHA */
1599 #ifdef CONFIG_BLK_DEV_IDEPNP
1611 EXPORT_SYMBOL(ide_lock);
1613 static int ide_bus_match(struct device *dev, struct device_driver *drv)
1618 static char *media_string(ide_drive_t *drive)
1620 switch (drive->media) {
1636 static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf)
1638 ide_drive_t *drive = to_ide_device(dev);
1639 return sprintf(buf, "%s\n", media_string(drive));
1642 static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf)
1644 ide_drive_t *drive = to_ide_device(dev);
1645 return sprintf(buf, "%s\n", drive->name);
1648 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
1650 ide_drive_t *drive = to_ide_device(dev);
1651 return sprintf(buf, "ide:m-%s\n", media_string(drive));
1654 static struct device_attribute ide_dev_attrs[] = {
1656 __ATTR_RO(drivename),
1657 __ATTR_RO(modalias),
1661 static int ide_uevent(struct device *dev, struct kobj_uevent_env *env)
1663 ide_drive_t *drive = to_ide_device(dev);
1665 add_uevent_var(env, "MEDIA=%s", media_string(drive));
1666 add_uevent_var(env, "DRIVENAME=%s", drive->name);
1667 add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive));
1671 static int generic_ide_probe(struct device *dev)
1673 ide_drive_t *drive = to_ide_device(dev);
1674 ide_driver_t *drv = to_ide_driver(dev->driver);
1676 return drv->probe ? drv->probe(drive) : -ENODEV;
1679 static int generic_ide_remove(struct device *dev)
1681 ide_drive_t *drive = to_ide_device(dev);
1682 ide_driver_t *drv = to_ide_driver(dev->driver);
1690 static void generic_ide_shutdown(struct device *dev)
1692 ide_drive_t *drive = to_ide_device(dev);
1693 ide_driver_t *drv = to_ide_driver(dev->driver);
1695 if (dev->driver && drv->shutdown)
1696 drv->shutdown(drive);
1699 struct bus_type ide_bus_type = {
1701 .match = ide_bus_match,
1702 .uevent = ide_uevent,
1703 .probe = generic_ide_probe,
1704 .remove = generic_ide_remove,
1705 .shutdown = generic_ide_shutdown,
1706 .dev_attrs = ide_dev_attrs,
1707 .suspend = generic_ide_suspend,
1708 .resume = generic_ide_resume,
1711 EXPORT_SYMBOL_GPL(ide_bus_type);
1714 * This is gets invoked once during initialization, to set *everything* up
1716 static int __init ide_init(void)
1720 printk(KERN_INFO "Uniform Multi-Platform E-IDE driver " REVISION "\n");
1721 system_bus_speed = ide_system_bus_speed();
1723 ret = bus_register(&ide_bus_type);
1725 printk(KERN_WARNING "IDE: bus_register error: %d\n", ret);
1733 #ifdef CONFIG_BLK_DEV_ALI14XX
1735 (void)ali14xx_init();
1737 #ifdef CONFIG_BLK_DEV_UMC8672
1739 (void)umc8672_init();
1741 #ifdef CONFIG_BLK_DEV_DTC2278
1743 (void)dtc2278_init();
1745 #ifdef CONFIG_BLK_DEV_HT6560B
1747 (void)ht6560b_init();
1749 #ifdef CONFIG_BLK_DEV_QD65XX
1751 (void)qd65xx_init();
1754 /* Probe for special PCI and other "known" interface chipsets. */
1761 static char *options = NULL;
1762 module_param(options, charp, 0);
1763 MODULE_LICENSE("GPL");
1765 static void __init parse_options (char *line)
1769 if (line == NULL || !*line)
1771 while ((line = next) != NULL) {
1772 if ((next = strchr(line,' ')) != NULL)
1774 if (!ide_setup(line))
1775 printk (KERN_INFO "Unknown option '%s'\n", line);
1779 int __init init_module (void)
1781 parse_options(options);
1785 void __exit cleanup_module (void)
1789 for (index = 0; index < MAX_HWIFS; ++index)
1790 ide_unregister(index);
1792 #ifdef CONFIG_BLK_DEV_IDEPNP
1798 bus_unregister(&ide_bus_type);
1803 __setup("", ide_setup);
1805 module_init(ide_init);