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 EXPORT_SYMBOL(noautodma);
105 #ifdef CONFIG_BLK_DEV_IDEACPI
107 int ide_noacpitfs = 1;
108 int ide_noacpionboot = 1;
112 * This is declared extern in ide.h, for access by other IDE modules:
114 ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */
116 EXPORT_SYMBOL(ide_hwifs);
119 * Do not even *think* about calling this!
121 static void init_hwif_data(ide_hwif_t *hwif, unsigned int index)
125 /* bulk initialize hwif & drive info with zeros */
126 memset(hwif, 0, sizeof(ide_hwif_t));
128 /* fill in any non-zero initial values */
130 hwif->major = ide_hwif_to_major[index];
135 hwif->name[3] = '0' + index;
137 hwif->bus_state = BUSSTATE_ON;
139 hwif->atapi_dma = 0; /* disable all atapi dma */
141 init_completion(&hwif->gendev_rel_comp);
143 default_hwif_iops(hwif);
144 default_hwif_transport(hwif);
145 for (unit = 0; unit < MAX_DRIVES; ++unit) {
146 ide_drive_t *drive = &hwif->drives[unit];
148 drive->media = ide_disk;
149 drive->select.all = (unit<<4)|0xa0;
152 drive->ready_stat = READY_STAT;
153 drive->bad_wstat = BAD_W_STAT;
154 drive->special.b.recalibrate = 1;
155 drive->special.b.set_geometry = 1;
156 drive->name[0] = 'h';
157 drive->name[1] = 'd';
158 drive->name[2] = 'a' + (index * MAX_DRIVES) + unit;
159 drive->max_failures = IDE_DEFAULT_MAX_FAILURES;
160 drive->using_dma = 0;
162 INIT_LIST_HEAD(&drive->list);
163 init_completion(&drive->gendev_rel_comp);
167 static void init_hwif_default(ide_hwif_t *hwif, unsigned int index)
171 memset(&hw, 0, sizeof(hw_regs_t));
173 ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, &hwif->irq);
175 memcpy(&hwif->hw, &hw, sizeof(hw));
176 memcpy(hwif->io_ports, hw.io_ports, sizeof(hw.io_ports));
178 hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET];
179 #ifdef CONFIG_BLK_DEV_HD
180 if (hwif->io_ports[IDE_DATA_OFFSET] == HD_DATA)
181 hwif->noprobe = 1; /* may be overridden by ide_setup() */
185 extern void ide_arm_init(void);
188 * init_ide_data() sets reasonable default values into all fields
189 * of all instances of the hwifs and drives, but only on the first call.
190 * Subsequent calls have no effect (they don't wipe out anything).
192 * This routine is normally called at driver initialization time,
193 * but may also be called MUCH earlier during kernel "command-line"
194 * parameter processing. As such, we cannot depend on any other parts
195 * of the kernel (such as memory allocation) to be functioning yet.
197 * This is too bad, as otherwise we could dynamically allocate the
198 * ide_drive_t structs as needed, rather than always consuming memory
199 * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them.
201 * FIXME: We should stuff the setup data into __init and copy the
202 * relevant hwifs/allocate them properly during boot.
204 #define MAGIC_COOKIE 0x12345678
205 static void __init init_ide_data (void)
209 static unsigned long magic_cookie = MAGIC_COOKIE;
211 if (magic_cookie != MAGIC_COOKIE)
212 return; /* already initialized */
215 /* Initialise all interface structures */
216 for (index = 0; index < MAX_HWIFS; ++index) {
217 hwif = &ide_hwifs[index];
218 init_hwif_data(hwif, index);
219 init_hwif_default(hwif, index);
220 #if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI)
221 hwif->irq = hwif->hw.irq =
222 ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]);
225 #ifdef CONFIG_IDE_ARM
231 * ide_system_bus_speed - guess bus speed
233 * ide_system_bus_speed() returns what we think is the system VESA/PCI
234 * bus speed (in MHz). This is used for calculating interface PIO timings.
235 * The default is 40 for known PCI systems, 50 otherwise.
236 * The "idebus=xx" parameter can be used to override this value.
237 * The actual value to be used is computed/displayed the first time
238 * through. Drivers should only use this as a last resort.
240 * Returns a guessed speed in MHz.
243 static int ide_system_bus_speed(void)
246 static struct pci_device_id pci_default[] = {
247 { PCI_DEVICE(PCI_ANY_ID, PCI_ANY_ID) },
251 #define pci_default 0
252 #endif /* CONFIG_PCI */
254 if (!system_bus_speed) {
255 if (idebus_parameter) {
256 /* user supplied value */
257 system_bus_speed = idebus_parameter;
258 } else if (pci_dev_present(pci_default)) {
259 /* safe default value for PCI */
260 system_bus_speed = 33;
262 /* safe default value for VESA and PCI */
263 system_bus_speed = 50;
265 printk(KERN_INFO "ide: Assuming %dMHz system bus speed "
266 "for PIO modes%s\n", system_bus_speed,
267 idebus_parameter ? "" : "; override with idebus=xx");
269 return system_bus_speed;
272 static struct resource* hwif_request_region(ide_hwif_t *hwif,
273 unsigned long addr, int num)
275 struct resource *res = request_region(addr, num, hwif->name);
278 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
279 hwif->name, addr, addr+num-1);
284 * ide_hwif_request_regions - request resources for IDE
285 * @hwif: interface to use
287 * Requests all the needed resources for an interface.
288 * Right now core IDE code does this work which is deeply wrong.
289 * MMIO leaves it to the controller driver,
290 * PIO will migrate this way over time.
293 int ide_hwif_request_regions(ide_hwif_t *hwif)
300 addr = hwif->io_ports[IDE_CONTROL_OFFSET];
301 if (addr && !hwif_request_region(hwif, addr, 1))
302 goto control_region_busy;
304 addr = hwif->io_ports[IDE_DATA_OFFSET];
305 if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) {
306 if (!hwif_request_region(hwif, addr, 8))
307 goto data_region_busy;
311 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
312 addr = hwif->io_ports[i];
313 if (!hwif_request_region(hwif, addr, 1)) {
315 release_region(addr, 1);
316 goto data_region_busy;
322 addr = hwif->io_ports[IDE_CONTROL_OFFSET];
324 release_region(addr, 1);
326 /* If any errors are return, we drop the hwif interface. */
331 * ide_hwif_release_regions - free IDE resources
333 * Note that we only release the standard ports,
334 * and do not even try to handle any extra ports
335 * allocated for weird IDE interface chipsets.
337 * Note also that we don't yet handle mmio resources here. More
338 * importantly our caller should be doing this so we need to
339 * restructure this as a helper function for drivers.
342 void ide_hwif_release_regions(ide_hwif_t *hwif)
348 if (hwif->io_ports[IDE_CONTROL_OFFSET])
349 release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1);
350 if (hwif->straight8) {
351 release_region(hwif->io_ports[IDE_DATA_OFFSET], 8);
354 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
355 if (hwif->io_ports[i])
356 release_region(hwif->io_ports[i], 1);
360 * ide_hwif_restore - restore hwif to template
361 * @hwif: hwif to update
362 * @tmp_hwif: template
364 * Restore hwif to a previous state by copying most settings
368 static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
370 hwif->hwgroup = tmp_hwif->hwgroup;
372 hwif->gendev.parent = tmp_hwif->gendev.parent;
374 hwif->proc = tmp_hwif->proc;
376 hwif->major = tmp_hwif->major;
377 hwif->straight8 = tmp_hwif->straight8;
378 hwif->bus_state = tmp_hwif->bus_state;
380 hwif->host_flags = tmp_hwif->host_flags;
382 hwif->pio_mask = tmp_hwif->pio_mask;
384 hwif->atapi_dma = tmp_hwif->atapi_dma;
385 hwif->ultra_mask = tmp_hwif->ultra_mask;
386 hwif->mwdma_mask = tmp_hwif->mwdma_mask;
387 hwif->swdma_mask = tmp_hwif->swdma_mask;
389 hwif->cbl = tmp_hwif->cbl;
391 hwif->chipset = tmp_hwif->chipset;
392 hwif->hold = tmp_hwif->hold;
394 #ifdef CONFIG_BLK_DEV_IDEPCI
395 hwif->pci_dev = tmp_hwif->pci_dev;
396 hwif->cds = tmp_hwif->cds;
399 hwif->tuneproc = tmp_hwif->tuneproc;
400 hwif->speedproc = tmp_hwif->speedproc;
401 hwif->mdma_filter = tmp_hwif->mdma_filter;
402 hwif->udma_filter = tmp_hwif->udma_filter;
403 hwif->selectproc = tmp_hwif->selectproc;
404 hwif->reset_poll = tmp_hwif->reset_poll;
405 hwif->pre_reset = tmp_hwif->pre_reset;
406 hwif->resetproc = tmp_hwif->resetproc;
407 hwif->intrproc = tmp_hwif->intrproc;
408 hwif->maskproc = tmp_hwif->maskproc;
409 hwif->quirkproc = tmp_hwif->quirkproc;
410 hwif->busproc = tmp_hwif->busproc;
412 hwif->ata_input_data = tmp_hwif->ata_input_data;
413 hwif->ata_output_data = tmp_hwif->ata_output_data;
414 hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes;
415 hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes;
417 hwif->dma_setup = tmp_hwif->dma_setup;
418 hwif->dma_exec_cmd = tmp_hwif->dma_exec_cmd;
419 hwif->dma_start = tmp_hwif->dma_start;
420 hwif->ide_dma_end = tmp_hwif->ide_dma_end;
421 hwif->ide_dma_check = tmp_hwif->ide_dma_check;
422 hwif->ide_dma_on = tmp_hwif->ide_dma_on;
423 hwif->dma_off_quietly = tmp_hwif->dma_off_quietly;
424 hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq;
425 hwif->ide_dma_clear_irq = tmp_hwif->ide_dma_clear_irq;
426 hwif->dma_host_on = tmp_hwif->dma_host_on;
427 hwif->dma_host_off = tmp_hwif->dma_host_off;
428 hwif->dma_lost_irq = tmp_hwif->dma_lost_irq;
429 hwif->dma_timeout = tmp_hwif->dma_timeout;
431 hwif->OUTB = tmp_hwif->OUTB;
432 hwif->OUTBSYNC = tmp_hwif->OUTBSYNC;
433 hwif->OUTW = tmp_hwif->OUTW;
434 hwif->OUTSW = tmp_hwif->OUTSW;
435 hwif->OUTSL = tmp_hwif->OUTSL;
437 hwif->INB = tmp_hwif->INB;
438 hwif->INW = tmp_hwif->INW;
439 hwif->INSW = tmp_hwif->INSW;
440 hwif->INSL = tmp_hwif->INSL;
442 hwif->sg_max_nents = tmp_hwif->sg_max_nents;
444 hwif->mmio = tmp_hwif->mmio;
445 hwif->rqsize = tmp_hwif->rqsize;
446 hwif->no_lba48 = tmp_hwif->no_lba48;
448 #ifndef CONFIG_BLK_DEV_IDECS
449 hwif->irq = tmp_hwif->irq;
452 hwif->dma_base = tmp_hwif->dma_base;
453 hwif->dma_master = tmp_hwif->dma_master;
454 hwif->dma_command = tmp_hwif->dma_command;
455 hwif->dma_vendor1 = tmp_hwif->dma_vendor1;
456 hwif->dma_status = tmp_hwif->dma_status;
457 hwif->dma_vendor3 = tmp_hwif->dma_vendor3;
458 hwif->dma_prdtable = tmp_hwif->dma_prdtable;
460 hwif->config_data = tmp_hwif->config_data;
461 hwif->select_data = tmp_hwif->select_data;
462 hwif->extra_base = tmp_hwif->extra_base;
463 hwif->extra_ports = tmp_hwif->extra_ports;
464 hwif->autodma = tmp_hwif->autodma;
466 hwif->hwif_data = tmp_hwif->hwif_data;
470 * ide_unregister - free an IDE interface
471 * @index: index of interface (will change soon to a pointer)
473 * Perform the final unregister of an IDE interface. At the moment
474 * we don't refcount interfaces so this will also get split up.
477 * The caller must not hold the IDE locks
478 * The drive present/vanishing is not yet properly locked
479 * Take care with the callbacks. These have been split to avoid
480 * deadlocking the IDE layer. The shutdown callback is called
481 * before we take the lock and free resources. It is up to the
482 * caller to be sure there is no pending I/O here, and that
483 * the interface will not be reopened (present/vanishing locking
484 * isn't yet done BTW). After we commit to the final kill we
485 * call the cleanup callback with the ide locks held.
487 * Unregister restores the hwif structures to the default state.
488 * This is raving bonkers.
491 void ide_unregister(unsigned int index)
494 ide_hwif_t *hwif, *g;
495 static ide_hwif_t tmp_hwif; /* protected by ide_cfg_mtx */
496 ide_hwgroup_t *hwgroup;
497 int irq_count = 0, unit;
499 BUG_ON(index >= MAX_HWIFS);
501 BUG_ON(in_interrupt());
502 BUG_ON(irqs_disabled());
503 mutex_lock(&ide_cfg_mtx);
504 spin_lock_irq(&ide_lock);
505 hwif = &ide_hwifs[index];
508 for (unit = 0; unit < MAX_DRIVES; ++unit) {
509 drive = &hwif->drives[unit];
512 spin_unlock_irq(&ide_lock);
513 device_unregister(&drive->gendev);
514 wait_for_completion(&drive->gendev_rel_comp);
515 spin_lock_irq(&ide_lock);
519 spin_unlock_irq(&ide_lock);
521 ide_proc_unregister_port(hwif);
523 hwgroup = hwif->hwgroup;
525 * free the irq if we were the only hwif using it
529 if (g->irq == hwif->irq)
532 } while (g != hwgroup->hwif);
534 free_irq(hwif->irq, hwgroup);
536 spin_lock_irq(&ide_lock);
538 * Note that we only release the standard ports,
539 * and do not even try to handle any extra ports
540 * allocated for weird IDE interface chipsets.
542 ide_hwif_release_regions(hwif);
545 * Remove us from the hwgroup, and free
546 * the hwgroup if we were the only member
548 if (hwif->next == hwif) {
549 BUG_ON(hwgroup->hwif != hwif);
552 /* There is another interface in hwgroup.
553 * Unlink us, and set hwgroup->drive and ->hwif to
557 while (g->next != hwif)
559 g->next = hwif->next;
560 if (hwgroup->hwif == hwif) {
561 /* Chose a random hwif for hwgroup->hwif.
562 * It's guaranteed that there are no drives
563 * left in the hwgroup.
565 BUG_ON(hwgroup->drive != NULL);
568 BUG_ON(hwgroup->hwif == hwif);
571 /* More messed up locking ... */
572 spin_unlock_irq(&ide_lock);
573 device_unregister(&hwif->gendev);
574 wait_for_completion(&hwif->gendev_rel_comp);
577 * Remove us from the kernel's knowledge
579 blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS);
580 kfree(hwif->sg_table);
581 unregister_blkdev(hwif->major, hwif->name);
582 spin_lock_irq(&ide_lock);
584 if (hwif->dma_base) {
585 (void) ide_release_dma(hwif);
588 hwif->dma_master = 0;
589 hwif->dma_command = 0;
590 hwif->dma_vendor1 = 0;
591 hwif->dma_status = 0;
592 hwif->dma_vendor3 = 0;
593 hwif->dma_prdtable = 0;
595 hwif->extra_base = 0;
596 hwif->extra_ports = 0;
599 /* copy original settings */
602 /* restore hwif data to pristine status */
603 init_hwif_data(hwif, index);
604 init_hwif_default(hwif, index);
606 ide_hwif_restore(hwif, &tmp_hwif);
609 spin_unlock_irq(&ide_lock);
610 mutex_unlock(&ide_cfg_mtx);
613 EXPORT_SYMBOL(ide_unregister);
617 * ide_setup_ports - set up IDE interface ports
618 * @hw: register descriptions
619 * @base: base register
620 * @offsets: table of register offsets
621 * @ctrl: control register
623 * @irq: interrupt lie
625 * Setup hw_regs_t structure described by parameters. You
626 * may set up the hw structure yourself OR use this routine to
627 * do it for you. This is basically a helper
631 void ide_setup_ports ( hw_regs_t *hw,
632 unsigned long base, int *offsets,
633 unsigned long ctrl, unsigned long intr,
634 ide_ack_intr_t *ack_intr,
636 * ide_io_ops_t *iops,
642 memset(hw, 0, sizeof(hw_regs_t));
643 for (i = 0; i < IDE_NR_PORTS; i++) {
644 if (offsets[i] == -1) {
646 case IDE_CONTROL_OFFSET:
647 hw->io_ports[i] = ctrl;
649 #if defined(CONFIG_AMIGA) || defined(CONFIG_MAC)
651 hw->io_ports[i] = intr;
653 #endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */
659 hw->io_ports[i] = base + offsets[i];
664 hw->ack_intr = ack_intr;
671 * ide_register_hw_with_fixup - register IDE interface
672 * @hw: hardware registers
673 * @initializing: set while initializing built-in drivers
674 * @hwifp: pointer to returned hwif
675 * @fixup: fixup function
677 * Register an IDE interface, specifying exactly the registers etc.
678 * Set init=1 iff calling before probes have taken place.
680 * Returns -1 on error.
683 int ide_register_hw_with_fixup(hw_regs_t *hw, int initializing,
685 void(*fixup)(ide_hwif_t *hwif))
687 int index, retry = 1;
691 for (index = 0; index < MAX_HWIFS; ++index) {
692 hwif = &ide_hwifs[index];
693 if (hwif->hw.io_ports[IDE_DATA_OFFSET] == hw->io_ports[IDE_DATA_OFFSET])
696 for (index = 0; index < MAX_HWIFS; ++index) {
697 hwif = &ide_hwifs[index];
700 if ((!hwif->present && !hwif->mate && !initializing) ||
701 (!hwif->hw.io_ports[IDE_DATA_OFFSET] && initializing))
704 for (index = 0; index < MAX_HWIFS; index++)
705 ide_unregister(index);
710 ide_unregister(index);
711 else if (!hwif->hold) {
712 init_hwif_data(hwif, index);
713 init_hwif_default(hwif, index);
717 memcpy(&hwif->hw, hw, sizeof(*hw));
718 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->hw.io_ports));
721 hwif->chipset = hw->chipset;
722 hwif->gendev.parent = hw->dev;
725 probe_hwif_init_with_fixup(hwif, fixup);
726 ide_proc_register_port(hwif);
732 return (initializing || hwif->present) ? index : -1;
735 EXPORT_SYMBOL(ide_register_hw_with_fixup);
737 int ide_register_hw(hw_regs_t *hw, int initializing, ide_hwif_t **hwifp)
739 return ide_register_hw_with_fixup(hw, initializing, hwifp, NULL);
742 EXPORT_SYMBOL(ide_register_hw);
745 * Locks for IDE setting functionality
748 DEFINE_MUTEX(ide_setting_mtx);
750 EXPORT_SYMBOL_GPL(ide_setting_mtx);
753 * ide_spin_wait_hwgroup - wait for group
754 * @drive: drive in the group
756 * Wait for an IDE device group to go non busy and then return
757 * holding the ide_lock which guards the hwgroup->busy status
758 * and right to use it.
761 int ide_spin_wait_hwgroup (ide_drive_t *drive)
763 ide_hwgroup_t *hwgroup = HWGROUP(drive);
764 unsigned long timeout = jiffies + (3 * HZ);
766 spin_lock_irq(&ide_lock);
768 while (hwgroup->busy) {
769 unsigned long lflags;
770 spin_unlock_irq(&ide_lock);
771 local_irq_set(lflags);
772 if (time_after(jiffies, timeout)) {
773 local_irq_restore(lflags);
774 printk(KERN_ERR "%s: channel busy\n", drive->name);
777 local_irq_restore(lflags);
778 spin_lock_irq(&ide_lock);
783 EXPORT_SYMBOL(ide_spin_wait_hwgroup);
785 int set_io_32bit(ide_drive_t *drive, int arg)
787 if (drive->no_io_32bit)
790 if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1))
793 drive->io_32bit = arg;
794 #ifdef CONFIG_BLK_DEV_DTC2278
795 if (HWIF(drive)->chipset == ide_dtc2278)
796 HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg;
797 #endif /* CONFIG_BLK_DEV_DTC2278 */
801 static int set_ksettings(ide_drive_t *drive, int arg)
803 if (arg < 0 || arg > 1)
806 if (ide_spin_wait_hwgroup(drive))
808 drive->keep_settings = arg;
809 spin_unlock_irq(&ide_lock);
814 int set_using_dma(ide_drive_t *drive, int arg)
816 #ifdef CONFIG_BLK_DEV_IDEDMA
817 ide_hwif_t *hwif = drive->hwif;
820 if (arg < 0 || arg > 1)
823 if (!drive->id || !(drive->id->capability & 1))
826 if (hwif->ide_dma_check == NULL)
830 if (ide_spin_wait_hwgroup(drive))
833 * set ->busy flag, unlock and let it ride
835 hwif->hwgroup->busy = 1;
836 spin_unlock_irq(&ide_lock);
841 hwif->dma_off_quietly(drive);
842 if (ide_set_dma(drive) || hwif->ide_dma_on(drive))
848 * lock, clear ->busy flag and unlock before leaving
850 spin_lock_irq(&ide_lock);
851 hwif->hwgroup->busy = 0;
852 spin_unlock_irq(&ide_lock);
856 if (arg < 0 || arg > 1)
863 int set_pio_mode(ide_drive_t *drive, int arg)
867 if (arg < 0 || arg > 255)
870 if (!HWIF(drive)->tuneproc)
872 if (drive->special.b.set_tune)
874 ide_init_drive_cmd(&rq);
875 drive->tune_req = (u8) arg;
876 drive->special.b.set_tune = 1;
877 (void) ide_do_drive_cmd(drive, &rq, ide_wait);
881 static int set_unmaskirq(ide_drive_t *drive, int arg)
883 if (drive->no_unmask)
886 if (arg < 0 || arg > 1)
889 if (ide_spin_wait_hwgroup(drive))
892 spin_unlock_irq(&ide_lock);
898 * system_bus_clock - clock guess
900 * External version of the bus clock guess used by very old IDE drivers
901 * for things like VLB timings. Should not be used.
904 int system_bus_clock (void)
906 return((int) ((!system_bus_speed) ? ide_system_bus_speed() : system_bus_speed ));
909 EXPORT_SYMBOL(system_bus_clock);
911 static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
913 ide_drive_t *drive = dev->driver_data;
914 ide_hwif_t *hwif = HWIF(drive);
916 struct request_pm_state rqpm;
919 /* Call ACPI _GTM only once */
920 if (!(drive->dn % 2))
921 ide_acpi_get_timing(hwif);
923 memset(&rq, 0, sizeof(rq));
924 memset(&rqpm, 0, sizeof(rqpm));
925 memset(&args, 0, sizeof(args));
926 rq.cmd_type = REQ_TYPE_PM_SUSPEND;
929 rqpm.pm_step = ide_pm_state_start_suspend;
930 if (mesg.event == PM_EVENT_PRETHAW)
931 mesg.event = PM_EVENT_FREEZE;
932 rqpm.pm_state = mesg.event;
934 return ide_do_drive_cmd(drive, &rq, ide_wait);
937 static int generic_ide_resume(struct device *dev)
939 ide_drive_t *drive = dev->driver_data;
940 ide_hwif_t *hwif = HWIF(drive);
942 struct request_pm_state rqpm;
946 /* Call ACPI _STM only once */
947 if (!(drive->dn % 2))
948 ide_acpi_push_timing(hwif);
950 ide_acpi_exec_tfs(drive);
952 memset(&rq, 0, sizeof(rq));
953 memset(&rqpm, 0, sizeof(rqpm));
954 memset(&args, 0, sizeof(args));
955 rq.cmd_type = REQ_TYPE_PM_RESUME;
958 rqpm.pm_step = ide_pm_state_start_resume;
959 rqpm.pm_state = PM_EVENT_ON;
961 err = ide_do_drive_cmd(drive, &rq, ide_head_wait);
963 if (err == 0 && dev->driver) {
964 ide_driver_t *drv = to_ide_driver(dev->driver);
973 int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev,
974 unsigned int cmd, unsigned long arg)
978 void __user *p = (void __user *)arg;
979 int err = 0, (*setfunc)(ide_drive_t *, int);
983 case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val;
984 case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val;
985 case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val;
986 case HDIO_GET_DMA: val = &drive->using_dma; goto read_val;
987 case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val;
988 case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val;
989 case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val;
990 case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val;
991 case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val;
995 case HDIO_OBSOLETE_IDENTITY:
996 case HDIO_GET_IDENTITY:
997 if (bdev != bdev->bd_contains)
999 if (drive->id_read == 0)
1001 if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142))
1006 return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP |
1007 drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP |
1008 drive->nice0 << IDE_NICE_0 |
1009 drive->nice1 << IDE_NICE_1 |
1010 drive->nice2 << IDE_NICE_2,
1011 (long __user *) arg);
1013 #ifdef CONFIG_IDE_TASK_IOCTL
1014 case HDIO_DRIVE_TASKFILE:
1015 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
1017 switch(drive->media) {
1019 return ide_taskfile_ioctl(drive, cmd, arg);
1023 #endif /* CONFIG_IDE_TASK_IOCTL */
1025 case HDIO_DRIVE_CMD:
1026 if (!capable(CAP_SYS_RAWIO))
1028 return ide_cmd_ioctl(drive, cmd, arg);
1030 case HDIO_DRIVE_TASK:
1031 if (!capable(CAP_SYS_RAWIO))
1033 return ide_task_ioctl(drive, cmd, arg);
1035 case HDIO_SCAN_HWIF:
1039 if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1040 if (copy_from_user(args, p, 3 * sizeof(int)))
1042 memset(&hw, 0, sizeof(hw));
1043 ide_init_hwif_ports(&hw, (unsigned long) args[0],
1044 (unsigned long) args[1], NULL);
1046 if (ide_register_hw(&hw, 0, NULL) == -1)
1050 case HDIO_UNREGISTER_HWIF:
1051 if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1052 /* (arg > MAX_HWIFS) checked in function */
1053 ide_unregister(arg);
1056 if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1057 if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1))))
1059 drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1;
1060 drv = *(ide_driver_t **)bdev->bd_disk->private_data;
1061 if (drive->dsc_overlap && !drv->supports_dsc_overlap) {
1062 drive->dsc_overlap = 0;
1065 drive->nice1 = (arg >> IDE_NICE_1) & 1;
1067 case HDIO_DRIVE_RESET:
1069 unsigned long flags;
1070 if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1073 * Abort the current command on the
1074 * group if there is one, taking
1075 * care not to allow anything else
1076 * to be queued and to die on the
1077 * spot if we miss one somehow
1080 spin_lock_irqsave(&ide_lock, flags);
1082 if (HWGROUP(drive)->resetting) {
1083 spin_unlock_irqrestore(&ide_lock, flags);
1087 ide_abort(drive, "drive reset");
1089 BUG_ON(HWGROUP(drive)->handler);
1091 /* Ensure nothing gets queued after we
1092 drop the lock. Reset will clear the busy */
1094 HWGROUP(drive)->busy = 1;
1095 spin_unlock_irqrestore(&ide_lock, flags);
1096 (void) ide_do_reset(drive);
1101 case HDIO_GET_BUSSTATE:
1102 if (!capable(CAP_SYS_ADMIN))
1104 if (put_user(HWIF(drive)->bus_state, (long __user *)arg))
1108 case HDIO_SET_BUSSTATE:
1109 if (!capable(CAP_SYS_ADMIN))
1111 if (HWIF(drive)->busproc)
1112 return HWIF(drive)->busproc(drive, (int)arg);
1119 mutex_lock(&ide_setting_mtx);
1120 spin_lock_irqsave(&ide_lock, flags);
1122 spin_unlock_irqrestore(&ide_lock, flags);
1123 mutex_unlock(&ide_setting_mtx);
1124 return err >= 0 ? put_user(err, (long __user *)arg) : err;
1127 if (bdev != bdev->bd_contains)
1130 if (!capable(CAP_SYS_ADMIN))
1133 mutex_lock(&ide_setting_mtx);
1134 err = setfunc(drive, arg);
1135 mutex_unlock(&ide_setting_mtx);
1141 EXPORT_SYMBOL(generic_ide_ioctl);
1144 * stridx() returns the offset of c within s,
1145 * or -1 if c is '\0' or not found within s.
1147 static int __init stridx (const char *s, char c)
1149 char *i = strchr(s, c);
1150 return (i && c) ? i - s : -1;
1154 * match_parm() does parsing for ide_setup():
1156 * 1. the first char of s must be '='.
1157 * 2. if the remainder matches one of the supplied keywords,
1158 * the index (1 based) of the keyword is negated and returned.
1159 * 3. if the remainder is a series of no more than max_vals numbers
1160 * separated by commas, the numbers are saved in vals[] and a
1161 * count of how many were saved is returned. Base10 is assumed,
1162 * and base16 is allowed when prefixed with "0x".
1163 * 4. otherwise, zero is returned.
1165 static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals)
1167 static const char *decimal = "0123456789";
1168 static const char *hex = "0123456789abcdef";
1173 * Try matching against the supplied keywords,
1174 * and return -(index+1) if we match one
1176 if (keywords != NULL) {
1177 for (i = 0; *keywords != NULL; ++i) {
1178 if (!strcmp(s, *keywords++))
1183 * Look for a series of no more than "max_vals"
1184 * numeric values separated by commas, in base10,
1185 * or base16 when prefixed with "0x".
1186 * Return a count of how many were found.
1188 for (n = 0; (i = stridx(decimal, *s)) >= 0;) {
1190 while ((i = stridx(decimal, *++s)) >= 0)
1191 vals[n] = (vals[n] * 10) + i;
1192 if (*s == 'x' && !vals[n]) {
1193 while ((i = stridx(hex, *++s)) >= 0)
1194 vals[n] = (vals[n] * 0x10) + i;
1196 if (++n == max_vals)
1198 if (*s == ',' || *s == ';')
1204 return 0; /* zero = nothing matched */
1207 #ifdef CONFIG_BLK_DEV_ALI14XX
1208 extern int probe_ali14xx;
1209 extern int ali14xx_init(void);
1211 #ifdef CONFIG_BLK_DEV_UMC8672
1212 extern int probe_umc8672;
1213 extern int umc8672_init(void);
1215 #ifdef CONFIG_BLK_DEV_DTC2278
1216 extern int probe_dtc2278;
1217 extern int dtc2278_init(void);
1219 #ifdef CONFIG_BLK_DEV_HT6560B
1220 extern int probe_ht6560b;
1221 extern int ht6560b_init(void);
1223 #ifdef CONFIG_BLK_DEV_QD65XX
1224 extern int probe_qd65xx;
1225 extern int qd65xx_init(void);
1228 static int __initdata is_chipset_set[MAX_HWIFS];
1231 * ide_setup() gets called VERY EARLY during initialization,
1232 * to handle kernel "command line" strings beginning with "hdx=" or "ide".
1234 * Remember to update Documentation/ide.txt if you change something here.
1236 static int __init ide_setup(char *s)
1241 unsigned int hw, unit;
1242 const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1);
1243 const char max_hwif = '0' + (MAX_HWIFS - 1);
1246 if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */
1247 return 0; /* driver and not us */
1249 if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2))
1252 printk(KERN_INFO "ide_setup: %s", s);
1255 #ifdef CONFIG_BLK_DEV_IDEDOUBLER
1256 if (!strcmp(s, "ide=doubler")) {
1257 extern int ide_doubler;
1259 printk(" : Enabled support for IDE doublers\n");
1263 #endif /* CONFIG_BLK_DEV_IDEDOUBLER */
1265 if (!strcmp(s, "ide=nodma")) {
1266 printk(" : Prevented DMA\n");
1271 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1272 if (!strcmp(s, "ide=reverse")) {
1273 ide_scan_direction = 1;
1274 printk(" : Enabled support for IDE inverse scan order.\n");
1279 #ifdef CONFIG_BLK_DEV_IDEACPI
1280 if (!strcmp(s, "ide=noacpi")) {
1281 //printk(" : Disable IDE ACPI support.\n");
1285 if (!strcmp(s, "ide=acpigtf")) {
1286 //printk(" : Enable IDE ACPI _GTF support.\n");
1290 if (!strcmp(s, "ide=acpionboot")) {
1291 //printk(" : Call IDE ACPI methods on boot.\n");
1292 ide_noacpionboot = 0;
1295 #endif /* CONFIG_BLK_DEV_IDEACPI */
1298 * Look for drive options: "hdx="
1300 if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) {
1301 const char *hd_words[] = {
1302 "none", "noprobe", "nowerr", "cdrom", "minus5",
1303 "autotune", "noautotune", "minus8", "swapdata", "bswap",
1304 "noflush", "remap", "remap63", "scsi", NULL };
1306 hw = unit / MAX_DRIVES;
1307 unit = unit % MAX_DRIVES;
1308 hwif = &ide_hwifs[hw];
1309 drive = &hwif->drives[unit];
1310 if (strncmp(s + 4, "ide-", 4) == 0) {
1311 strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req));
1314 switch (match_parm(&s[3], hd_words, vals, 3)) {
1315 case -1: /* "none" */
1316 case -2: /* "noprobe" */
1319 case -3: /* "nowerr" */
1320 drive->bad_wstat = BAD_R_STAT;
1323 case -4: /* "cdrom" */
1325 drive->media = ide_cdrom;
1326 /* an ATAPI device ignores DRDY */
1327 drive->ready_stat = 0;
1330 case -6: /* "autotune" */
1331 drive->autotune = IDE_TUNE_AUTO;
1332 goto obsolete_option;
1333 case -7: /* "noautotune" */
1334 drive->autotune = IDE_TUNE_NOAUTO;
1335 goto obsolete_option;
1336 case -9: /* "swapdata" */
1337 case -10: /* "bswap" */
1340 case -11: /* noflush */
1343 case -12: /* "remap" */
1344 drive->remap_0_to_1 = 1;
1346 case -13: /* "remap63" */
1349 case -14: /* "scsi" */
1352 case 3: /* cyl,head,sect */
1353 drive->media = ide_disk;
1354 drive->ready_stat = READY_STAT;
1355 drive->cyl = drive->bios_cyl = vals[0];
1356 drive->head = drive->bios_head = vals[1];
1357 drive->sect = drive->bios_sect = vals[2];
1359 drive->forced_geom = 1;
1367 if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e')
1370 * Look for bus speed option: "idebus="
1372 if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') {
1373 if (match_parm(&s[6], NULL, vals, 1) != 1)
1375 if (vals[0] >= 20 && vals[0] <= 66) {
1376 idebus_parameter = vals[0];
1378 printk(" -- BAD BUS SPEED! Expected value from 20 to 66");
1382 * Look for interface options: "idex="
1384 if (s[3] >= '0' && s[3] <= max_hwif) {
1386 * Be VERY CAREFUL changing this: note hardcoded indexes below
1387 * (-8, -9, -10) are reserved to ease the hardcoding.
1389 static const char *ide_words[] = {
1390 "noprobe", "serialize", "minus3", "minus4",
1391 "reset", "dma", "ata66", "minus8", "minus9",
1392 "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb",
1393 "dtc2278", "umc8672", "ali14xx", NULL };
1395 hwif = &ide_hwifs[hw];
1396 i = match_parm(&s[4], ide_words, vals, 3);
1399 * Cryptic check to ensure chipset not already set for hwif.
1400 * Note: we can't depend on hwif->chipset here.
1402 if ((i >= -18 && i <= -11) || (i > 0 && i <= 3)) {
1403 /* chipset already specified */
1404 if (is_chipset_set[hw])
1406 if (i > -18 && i <= -11) {
1407 /* these drivers are for "ide0=" only */
1410 /* chipset already specified for 2nd port */
1411 if (is_chipset_set[hw+1])
1414 is_chipset_set[hw] = 1;
1419 #ifdef CONFIG_BLK_DEV_ALI14XX
1420 case -17: /* "ali14xx" */
1424 #ifdef CONFIG_BLK_DEV_UMC8672
1425 case -16: /* "umc8672" */
1429 #ifdef CONFIG_BLK_DEV_DTC2278
1430 case -15: /* "dtc2278" */
1434 #ifdef CONFIG_BLK_DEV_CMD640
1435 case -14: /* "cmd640_vlb" */
1437 extern int cmd640_vlb; /* flag for cmd640.c */
1442 #ifdef CONFIG_BLK_DEV_HT6560B
1443 case -13: /* "ht6560b" */
1447 #ifdef CONFIG_BLK_DEV_QD65XX
1448 case -12: /* "qd65xx" */
1452 #ifdef CONFIG_BLK_DEV_4DRIVES
1453 case -11: /* "four" drives on one set of ports */
1455 ide_hwif_t *mate = &ide_hwifs[hw^1];
1456 mate->drives[0].select.all ^= 0x20;
1457 mate->drives[1].select.all ^= 0x20;
1458 hwif->chipset = mate->chipset = ide_4drives;
1459 mate->irq = hwif->irq;
1460 memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports));
1463 hwif->serialized = mate->serialized = 1;
1464 goto obsolete_option;
1466 #endif /* CONFIG_BLK_DEV_4DRIVES */
1467 case -10: /* minus10 */
1468 case -9: /* minus9 */
1469 case -8: /* minus8 */
1473 case -7: /* ata66 */
1474 #ifdef CONFIG_BLK_DEV_IDEPCI
1476 * Use ATA_CBL_PATA40_SHORT so drive side
1477 * cable detection is also overriden.
1479 hwif->cbl = ATA_CBL_PATA40_SHORT;
1480 goto obsolete_option;
1486 goto obsolete_option;
1487 case -5: /* "reset" */
1489 goto obsolete_option;
1490 case -2: /* "serialize" */
1491 hwif->mate = &ide_hwifs[hw^1];
1492 hwif->mate->mate = hwif;
1493 hwif->serialized = hwif->mate->serialized = 1;
1494 goto obsolete_option;
1496 case -1: /* "noprobe" */
1501 vals[1] = vals[0] + 0x206; /* default ctl */
1502 case 2: /* base,ctl */
1503 vals[2] = 0; /* default irq = probe for it */
1504 case 3: /* base,ctl,irq */
1505 hwif->hw.irq = vals[2];
1506 ide_init_hwif_ports(&hwif->hw, (unsigned long) vals[0], (unsigned long) vals[1], &hwif->irq);
1507 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports));
1508 hwif->irq = vals[2];
1510 hwif->chipset = ide_forced;
1511 goto obsolete_option;
1513 case 0: goto bad_option;
1515 printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n");
1520 printk(" -- BAD OPTION\n");
1523 printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n");
1526 printk("-- NOT SUPPORTED ON ide%d", hw);
1532 extern void __init pnpide_init(void);
1533 extern void __exit pnpide_exit(void);
1534 extern void __init h8300_ide_init(void);
1537 * probe_for_hwifs() finds/initializes "known" IDE interfaces
1539 static void __init probe_for_hwifs (void)
1541 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1542 ide_scan_pcibus(ide_scan_direction);
1545 #ifdef CONFIG_ETRAX_IDE
1547 extern void init_e100_ide(void);
1550 #endif /* CONFIG_ETRAX_IDE */
1551 #ifdef CONFIG_BLK_DEV_CMD640
1553 extern void ide_probe_for_cmd640x(void);
1554 ide_probe_for_cmd640x();
1556 #endif /* CONFIG_BLK_DEV_CMD640 */
1557 #ifdef CONFIG_BLK_DEV_IDE_PMAC
1559 extern int pmac_ide_probe(void);
1560 (void)pmac_ide_probe();
1562 #endif /* CONFIG_BLK_DEV_IDE_PMAC */
1563 #ifdef CONFIG_BLK_DEV_GAYLE
1565 extern void gayle_init(void);
1568 #endif /* CONFIG_BLK_DEV_GAYLE */
1569 #ifdef CONFIG_BLK_DEV_FALCON_IDE
1571 extern void falconide_init(void);
1574 #endif /* CONFIG_BLK_DEV_FALCON_IDE */
1575 #ifdef CONFIG_BLK_DEV_MAC_IDE
1577 extern void macide_init(void);
1580 #endif /* CONFIG_BLK_DEV_MAC_IDE */
1581 #ifdef CONFIG_BLK_DEV_Q40IDE
1583 extern void q40ide_init(void);
1586 #endif /* CONFIG_BLK_DEV_Q40IDE */
1587 #ifdef CONFIG_BLK_DEV_BUDDHA
1589 extern void buddha_init(void);
1592 #endif /* CONFIG_BLK_DEV_BUDDHA */
1593 #ifdef CONFIG_BLK_DEV_IDEPNP
1605 EXPORT_SYMBOL(ide_lock);
1607 static int ide_bus_match(struct device *dev, struct device_driver *drv)
1612 static char *media_string(ide_drive_t *drive)
1614 switch (drive->media) {
1630 static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf)
1632 ide_drive_t *drive = to_ide_device(dev);
1633 return sprintf(buf, "%s\n", media_string(drive));
1636 static ssize_t drivename_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", drive->name);
1642 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
1644 ide_drive_t *drive = to_ide_device(dev);
1645 return sprintf(buf, "ide:m-%s\n", media_string(drive));
1648 static struct device_attribute ide_dev_attrs[] = {
1650 __ATTR_RO(drivename),
1651 __ATTR_RO(modalias),
1655 static int ide_uevent(struct device *dev, char **envp, int num_envp,
1656 char *buffer, int buffer_size)
1658 ide_drive_t *drive = to_ide_device(dev);
1662 add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
1663 "MEDIA=%s", media_string(drive));
1664 add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
1665 "DRIVENAME=%s", drive->name);
1666 add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
1667 "MODALIAS=ide:m-%s", media_string(drive));
1672 static int generic_ide_probe(struct device *dev)
1674 ide_drive_t *drive = to_ide_device(dev);
1675 ide_driver_t *drv = to_ide_driver(dev->driver);
1677 return drv->probe ? drv->probe(drive) : -ENODEV;
1680 static int generic_ide_remove(struct device *dev)
1682 ide_drive_t *drive = to_ide_device(dev);
1683 ide_driver_t *drv = to_ide_driver(dev->driver);
1691 static void generic_ide_shutdown(struct device *dev)
1693 ide_drive_t *drive = to_ide_device(dev);
1694 ide_driver_t *drv = to_ide_driver(dev->driver);
1696 if (dev->driver && drv->shutdown)
1697 drv->shutdown(drive);
1700 struct bus_type ide_bus_type = {
1702 .match = ide_bus_match,
1703 .uevent = ide_uevent,
1704 .probe = generic_ide_probe,
1705 .remove = generic_ide_remove,
1706 .shutdown = generic_ide_shutdown,
1707 .dev_attrs = ide_dev_attrs,
1708 .suspend = generic_ide_suspend,
1709 .resume = generic_ide_resume,
1712 EXPORT_SYMBOL_GPL(ide_bus_type);
1715 * This is gets invoked once during initialization, to set *everything* up
1717 static int __init ide_init(void)
1721 printk(KERN_INFO "Uniform Multi-Platform E-IDE driver " REVISION "\n");
1722 system_bus_speed = ide_system_bus_speed();
1724 ret = bus_register(&ide_bus_type);
1726 printk(KERN_WARNING "IDE: bus_register error: %d\n", ret);
1734 #ifdef CONFIG_BLK_DEV_ALI14XX
1736 (void)ali14xx_init();
1738 #ifdef CONFIG_BLK_DEV_UMC8672
1740 (void)umc8672_init();
1742 #ifdef CONFIG_BLK_DEV_DTC2278
1744 (void)dtc2278_init();
1746 #ifdef CONFIG_BLK_DEV_HT6560B
1748 (void)ht6560b_init();
1750 #ifdef CONFIG_BLK_DEV_QD65XX
1752 (void)qd65xx_init();
1755 /* Probe for special PCI and other "known" interface chipsets. */
1762 static char *options = NULL;
1763 module_param(options, charp, 0);
1764 MODULE_LICENSE("GPL");
1766 static void __init parse_options (char *line)
1770 if (line == NULL || !*line)
1772 while ((line = next) != NULL) {
1773 if ((next = strchr(line,' ')) != NULL)
1775 if (!ide_setup(line))
1776 printk (KERN_INFO "Unknown option '%s'\n", line);
1780 int __init init_module (void)
1782 parse_options(options);
1786 void __exit cleanup_module (void)
1790 for (index = 0; index < MAX_HWIFS; ++index)
1791 ide_unregister(index);
1793 #ifdef CONFIG_BLK_DEV_IDEPNP
1799 bus_unregister(&ide_bus_type);
1804 __setup("", ide_setup);
1806 module_init(ide_init);