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.
19 * Primary: ide0, port 0x1f0; major=3; hda is minor=0; hdb is minor=64
20 * Secondary: ide1, port 0x170; major=22; hdc is minor=0; hdd is minor=64
21 * Tertiary: ide2, port 0x???; major=33; hde is minor=0; hdf is minor=64
22 * Quaternary: ide3, port 0x???; major=34; hdg is minor=0; hdh is minor=64
27 * | It traverses the request-list, using interrupts to jump between functions.
28 * | As nearly all functions can be called within interrupts, we may not sleep.
29 * | Special care is recommended. Have Fun!
31 * | modified by Drew Eckhardt to check nr of hd's from the CMOS.
33 * | Thanks to Branko Lankester, lankeste@fwi.uva.nl, who found a bug
34 * | in the early extended-partition checks and added DM partitions.
36 * | Early work on error handling by Mika Liljeberg (liljeber@cs.Helsinki.FI).
38 * | IRQ-unmask, drive-id, multiple-mode, support for ">16 heads",
39 * | and general streamlining by Mark Lord (mlord@pobox.com).
41 * October, 1994 -- Complete line-by-line overhaul for linux 1.1.x, by:
43 * Mark Lord (mlord@pobox.com) (IDE Perf.Pkg)
44 * Delman Lee (delman@ieee.org) ("Mr. atdisk2")
45 * Scott Snyder (snyder@fnald0.fnal.gov) (ATAPI IDE cd-rom)
47 * This was a rewrite of just about everything from hd.c, though some original
48 * code is still sprinkled about. Think of it as a major evolution, with
49 * inspiration from lots of linux users, esp. hamish@zot.apana.org.au
51 * Version 1.0 ALPHA initial code, primary i/f working okay
52 * Version 1.3 BETA dual i/f on shared irq tested & working!
53 * Version 1.4 BETA added auto probing for irq(s)
54 * Version 1.5 BETA added ALPHA (untested) support for IDE cd-roms,
56 * Version 5.50 allow values as small as 20 for idebus=
57 * Version 5.51 force non io_32bit in drive_cmd_intr()
58 * change delay_10ms() to delay_50ms() to fix problems
59 * Version 5.52 fix incorrect invalidation of removable devices
60 * add "hdx=slow" command line option
61 * Version 5.60 start to modularize the driver; the disk and ATAPI
62 * drivers can be compiled as loadable modules.
63 * move IDE probe code to ide-probe.c
64 * move IDE disk code to ide-disk.c
65 * add support for generic IDE device subdrivers
66 * add m68k code from Geert Uytterhoeven
67 * probe all interfaces by default
68 * add ioctl to (re)probe an interface
69 * Version 6.00 use per device request queues
70 * attempt to optimize shared hwgroup performance
71 * add ioctl to manually adjust bandwidth algorithms
72 * add kerneld support for the probe module
73 * fix bug in ide_error()
74 * fix bug in the first ide_get_lock() call for Atari
75 * don't flush leftover data for ATAPI devices
76 * Version 6.01 clear hwgroup->active while the hwgroup sleeps
77 * support HDIO_GETGEO for floppies
78 * Version 6.02 fix ide_ack_intr() call
79 * check partition table on floppies
80 * Version 6.03 handle bad status bit sequencing in ide_wait_stat()
81 * Version 6.10 deleted old entries from this list of updates
82 * replaced triton.c with ide-dma.c generic PCI DMA
83 * added support for BIOS-enabled UltraDMA
84 * rename all "promise" things to "pdc4030"
85 * fix EZ-DRIVE handling on small disks
86 * Version 6.11 fix probe error in ide_scan_devices()
87 * fix ancient "jiffies" polling bugs
88 * mask all hwgroup interrupts on each irq entry
89 * Version 6.12 integrate ioctl and proc interfaces
90 * fix parsing of "idex=" command line parameter
91 * Version 6.13 add support for ide4/ide5 courtesy rjones@orchestream.com
92 * Version 6.14 fixed IRQ sharing among PCI devices
93 * Version 6.15 added SMP awareness to IDE drivers
94 * Version 6.16 fixed various bugs; even more SMP friendly
95 * Version 6.17 fix for newest EZ-Drive problem
96 * Version 6.18 default unpartitioned-disk translation now "BIOS LBA"
97 * Version 6.19 Re-design for a UNIFORM driver for all platforms,
98 * model based on suggestions from Russell King and
100 * Promise DC4030VL now supported.
101 * add support for ide6/ide7
102 * delay_50ms() changed to ide_delay_50ms() and exported.
103 * Version 6.20 Added/Fixed Generic ATA-66 support and hwif detection.
104 * Added hdx=flash to allow for second flash disk
105 * detection w/o the hang loop.
106 * Added support for ide8/ide9
107 * Added idex=ata66 for the quirky chipsets that are
108 * ATA-66 compliant, but have yet to determine a method
109 * of verification of the 80c cable presence.
110 * Specifically Promise's PDC20262 chipset.
111 * Version 6.21 Fixing/Fixed SMP spinlock issue with insight from an old
112 * hat that clarified original low level driver design.
113 * Version 6.30 Added SMP support; fixed multmode issues. -ml
114 * Version 6.31 Debug Share INTR's and request queue streaming
115 * Native ATA-100 support
116 * Prep for Cascades Project
117 * Version 7.00alpha First named revision of ide rearrange
119 * Some additional driver compile-time options are in ./include/linux/ide.h
121 * To do, in likely order of completion:
122 * - modify kernel to obtain BIOS geometry for drives on 2nd/3rd/4th i/f
126 #define REVISION "Revision: 7.00alpha2"
127 #define VERSION "Id: ide.c 7.00a2 20020906"
129 #define _IDE_C /* Tell ide.h it's really us */
131 #include <linux/module.h>
132 #include <linux/types.h>
133 #include <linux/string.h>
134 #include <linux/kernel.h>
135 #include <linux/timer.h>
136 #include <linux/mm.h>
137 #include <linux/interrupt.h>
138 #include <linux/major.h>
139 #include <linux/errno.h>
140 #include <linux/genhd.h>
141 #include <linux/blkpg.h>
142 #include <linux/slab.h>
143 #include <linux/init.h>
144 #include <linux/pci.h>
145 #include <linux/delay.h>
146 #include <linux/ide.h>
147 #include <linux/completion.h>
148 #include <linux/reboot.h>
149 #include <linux/cdrom.h>
150 #include <linux/seq_file.h>
151 #include <linux/device.h>
152 #include <linux/bitops.h>
154 #include <asm/byteorder.h>
156 #include <asm/uaccess.h>
160 /* default maximum number of failures */
161 #define IDE_DEFAULT_MAX_FAILURES 1
163 static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR,
164 IDE2_MAJOR, IDE3_MAJOR,
165 IDE4_MAJOR, IDE5_MAJOR,
166 IDE6_MAJOR, IDE7_MAJOR,
167 IDE8_MAJOR, IDE9_MAJOR };
169 static int idebus_parameter; /* holds the "idebus=" parameter */
170 static int system_bus_speed; /* holds what we think is VESA/PCI bus speed */
172 DECLARE_MUTEX(ide_cfg_sem);
173 __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock);
175 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
176 static int ide_scan_direction; /* THIS was formerly 2.2.x pci=reverse */
181 EXPORT_SYMBOL(noautodma);
183 #ifdef CONFIG_BLK_DEV_IDEACPI
185 int ide_noacpitfs = 1;
186 int ide_noacpionboot = 1;
190 * This is declared extern in ide.h, for access by other IDE modules:
192 ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */
194 EXPORT_SYMBOL(ide_hwifs);
197 * Do not even *think* about calling this!
199 static void init_hwif_data(ide_hwif_t *hwif, unsigned int index)
203 /* bulk initialize hwif & drive info with zeros */
204 memset(hwif, 0, sizeof(ide_hwif_t));
206 /* fill in any non-zero initial values */
208 hwif->major = ide_hwif_to_major[index];
213 hwif->name[3] = '0' + index;
215 hwif->bus_state = BUSSTATE_ON;
217 hwif->atapi_dma = 0; /* disable all atapi dma */
219 init_completion(&hwif->gendev_rel_comp);
221 default_hwif_iops(hwif);
222 default_hwif_transport(hwif);
223 for (unit = 0; unit < MAX_DRIVES; ++unit) {
224 ide_drive_t *drive = &hwif->drives[unit];
226 drive->media = ide_disk;
227 drive->select.all = (unit<<4)|0xa0;
230 drive->ready_stat = READY_STAT;
231 drive->bad_wstat = BAD_W_STAT;
232 drive->special.b.recalibrate = 1;
233 drive->special.b.set_geometry = 1;
234 drive->name[0] = 'h';
235 drive->name[1] = 'd';
236 drive->name[2] = 'a' + (index * MAX_DRIVES) + unit;
237 drive->max_failures = IDE_DEFAULT_MAX_FAILURES;
238 drive->using_dma = 0;
240 INIT_LIST_HEAD(&drive->list);
241 init_completion(&drive->gendev_rel_comp);
245 static void init_hwif_default(ide_hwif_t *hwif, unsigned int index)
249 memset(&hw, 0, sizeof(hw_regs_t));
251 ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, &hwif->irq);
253 memcpy(&hwif->hw, &hw, sizeof(hw));
254 memcpy(hwif->io_ports, hw.io_ports, sizeof(hw.io_ports));
256 hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET];
257 #ifdef CONFIG_BLK_DEV_HD
258 if (hwif->io_ports[IDE_DATA_OFFSET] == HD_DATA)
259 hwif->noprobe = 1; /* may be overridden by ide_setup() */
263 extern void ide_arm_init(void);
266 * init_ide_data() sets reasonable default values into all fields
267 * of all instances of the hwifs and drives, but only on the first call.
268 * Subsequent calls have no effect (they don't wipe out anything).
270 * This routine is normally called at driver initialization time,
271 * but may also be called MUCH earlier during kernel "command-line"
272 * parameter processing. As such, we cannot depend on any other parts
273 * of the kernel (such as memory allocation) to be functioning yet.
275 * This is too bad, as otherwise we could dynamically allocate the
276 * ide_drive_t structs as needed, rather than always consuming memory
277 * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them.
279 * FIXME: We should stuff the setup data into __init and copy the
280 * relevant hwifs/allocate them properly during boot.
282 #define MAGIC_COOKIE 0x12345678
283 static void __init init_ide_data (void)
287 static unsigned long magic_cookie = MAGIC_COOKIE;
289 if (magic_cookie != MAGIC_COOKIE)
290 return; /* already initialized */
293 /* Initialise all interface structures */
294 for (index = 0; index < MAX_HWIFS; ++index) {
295 hwif = &ide_hwifs[index];
296 init_hwif_data(hwif, index);
297 init_hwif_default(hwif, index);
298 #if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI)
299 hwif->irq = hwif->hw.irq =
300 ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]);
303 #ifdef CONFIG_IDE_ARM
309 * ide_system_bus_speed - guess bus speed
311 * ide_system_bus_speed() returns what we think is the system VESA/PCI
312 * bus speed (in MHz). This is used for calculating interface PIO timings.
313 * The default is 40 for known PCI systems, 50 otherwise.
314 * The "idebus=xx" parameter can be used to override this value.
315 * The actual value to be used is computed/displayed the first time
316 * through. Drivers should only use this as a last resort.
318 * Returns a guessed speed in MHz.
321 static int ide_system_bus_speed(void)
324 static struct pci_device_id pci_default[] = {
325 { PCI_DEVICE(PCI_ANY_ID, PCI_ANY_ID) },
329 #define pci_default 0
330 #endif /* CONFIG_PCI */
332 if (!system_bus_speed) {
333 if (idebus_parameter) {
334 /* user supplied value */
335 system_bus_speed = idebus_parameter;
336 } else if (pci_dev_present(pci_default)) {
337 /* safe default value for PCI */
338 system_bus_speed = 33;
340 /* safe default value for VESA and PCI */
341 system_bus_speed = 50;
343 printk(KERN_INFO "ide: Assuming %dMHz system bus speed "
344 "for PIO modes%s\n", system_bus_speed,
345 idebus_parameter ? "" : "; override with idebus=xx");
347 return system_bus_speed;
350 static struct resource* hwif_request_region(ide_hwif_t *hwif,
351 unsigned long addr, int num)
353 struct resource *res = request_region(addr, num, hwif->name);
356 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
357 hwif->name, addr, addr+num-1);
362 * ide_hwif_request_regions - request resources for IDE
363 * @hwif: interface to use
365 * Requests all the needed resources for an interface.
366 * Right now core IDE code does this work which is deeply wrong.
367 * MMIO leaves it to the controller driver,
368 * PIO will migrate this way over time.
371 int ide_hwif_request_regions(ide_hwif_t *hwif)
378 addr = hwif->io_ports[IDE_CONTROL_OFFSET];
379 if (addr && !hwif_request_region(hwif, addr, 1))
380 goto control_region_busy;
382 addr = hwif->io_ports[IDE_DATA_OFFSET];
383 if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) {
384 if (!hwif_request_region(hwif, addr, 8))
385 goto data_region_busy;
389 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
390 addr = hwif->io_ports[i];
391 if (!hwif_request_region(hwif, addr, 1)) {
393 release_region(addr, 1);
394 goto data_region_busy;
400 addr = hwif->io_ports[IDE_CONTROL_OFFSET];
402 release_region(addr, 1);
404 /* If any errors are return, we drop the hwif interface. */
409 * ide_hwif_release_regions - free IDE resources
411 * Note that we only release the standard ports,
412 * and do not even try to handle any extra ports
413 * allocated for weird IDE interface chipsets.
415 * Note also that we don't yet handle mmio resources here. More
416 * importantly our caller should be doing this so we need to
417 * restructure this as a helper function for drivers.
420 void ide_hwif_release_regions(ide_hwif_t *hwif)
426 if (hwif->io_ports[IDE_CONTROL_OFFSET])
427 release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1);
428 if (hwif->straight8) {
429 release_region(hwif->io_ports[IDE_DATA_OFFSET], 8);
432 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
433 if (hwif->io_ports[i])
434 release_region(hwif->io_ports[i], 1);
438 * ide_hwif_restore - restore hwif to template
439 * @hwif: hwif to update
440 * @tmp_hwif: template
442 * Restore hwif to a previous state by copying most settings
446 static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
448 hwif->hwgroup = tmp_hwif->hwgroup;
450 hwif->gendev.parent = tmp_hwif->gendev.parent;
452 hwif->proc = tmp_hwif->proc;
454 hwif->major = tmp_hwif->major;
455 hwif->straight8 = tmp_hwif->straight8;
456 hwif->bus_state = tmp_hwif->bus_state;
458 hwif->atapi_dma = tmp_hwif->atapi_dma;
459 hwif->ultra_mask = tmp_hwif->ultra_mask;
460 hwif->mwdma_mask = tmp_hwif->mwdma_mask;
461 hwif->swdma_mask = tmp_hwif->swdma_mask;
463 hwif->chipset = tmp_hwif->chipset;
464 hwif->hold = tmp_hwif->hold;
466 #ifdef CONFIG_BLK_DEV_IDEPCI
467 hwif->pci_dev = tmp_hwif->pci_dev;
468 hwif->cds = tmp_hwif->cds;
471 hwif->tuneproc = tmp_hwif->tuneproc;
472 hwif->speedproc = tmp_hwif->speedproc;
473 hwif->udma_filter = tmp_hwif->udma_filter;
474 hwif->selectproc = tmp_hwif->selectproc;
475 hwif->reset_poll = tmp_hwif->reset_poll;
476 hwif->pre_reset = tmp_hwif->pre_reset;
477 hwif->resetproc = tmp_hwif->resetproc;
478 hwif->intrproc = tmp_hwif->intrproc;
479 hwif->maskproc = tmp_hwif->maskproc;
480 hwif->quirkproc = tmp_hwif->quirkproc;
481 hwif->busproc = tmp_hwif->busproc;
483 hwif->ata_input_data = tmp_hwif->ata_input_data;
484 hwif->ata_output_data = tmp_hwif->ata_output_data;
485 hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes;
486 hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes;
488 hwif->dma_setup = tmp_hwif->dma_setup;
489 hwif->dma_exec_cmd = tmp_hwif->dma_exec_cmd;
490 hwif->dma_start = tmp_hwif->dma_start;
491 hwif->ide_dma_end = tmp_hwif->ide_dma_end;
492 hwif->ide_dma_check = tmp_hwif->ide_dma_check;
493 hwif->ide_dma_on = tmp_hwif->ide_dma_on;
494 hwif->dma_off_quietly = tmp_hwif->dma_off_quietly;
495 hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq;
496 hwif->ide_dma_clear_irq = tmp_hwif->ide_dma_clear_irq;
497 hwif->dma_host_on = tmp_hwif->dma_host_on;
498 hwif->dma_host_off = tmp_hwif->dma_host_off;
499 hwif->ide_dma_lostirq = tmp_hwif->ide_dma_lostirq;
500 hwif->ide_dma_timeout = tmp_hwif->ide_dma_timeout;
502 hwif->OUTB = tmp_hwif->OUTB;
503 hwif->OUTBSYNC = tmp_hwif->OUTBSYNC;
504 hwif->OUTW = tmp_hwif->OUTW;
505 hwif->OUTSW = tmp_hwif->OUTSW;
506 hwif->OUTSL = tmp_hwif->OUTSL;
508 hwif->INB = tmp_hwif->INB;
509 hwif->INW = tmp_hwif->INW;
510 hwif->INSW = tmp_hwif->INSW;
511 hwif->INSL = tmp_hwif->INSL;
513 hwif->sg_max_nents = tmp_hwif->sg_max_nents;
515 hwif->mmio = tmp_hwif->mmio;
516 hwif->rqsize = tmp_hwif->rqsize;
517 hwif->no_lba48 = tmp_hwif->no_lba48;
519 #ifndef CONFIG_BLK_DEV_IDECS
520 hwif->irq = tmp_hwif->irq;
523 hwif->dma_base = tmp_hwif->dma_base;
524 hwif->dma_master = tmp_hwif->dma_master;
525 hwif->dma_command = tmp_hwif->dma_command;
526 hwif->dma_vendor1 = tmp_hwif->dma_vendor1;
527 hwif->dma_status = tmp_hwif->dma_status;
528 hwif->dma_vendor3 = tmp_hwif->dma_vendor3;
529 hwif->dma_prdtable = tmp_hwif->dma_prdtable;
531 hwif->config_data = tmp_hwif->config_data;
532 hwif->select_data = tmp_hwif->select_data;
533 hwif->extra_base = tmp_hwif->extra_base;
534 hwif->extra_ports = tmp_hwif->extra_ports;
535 hwif->autodma = tmp_hwif->autodma;
536 hwif->udma_four = tmp_hwif->udma_four;
538 hwif->hwif_data = tmp_hwif->hwif_data;
542 * ide_unregister - free an IDE interface
543 * @index: index of interface (will change soon to a pointer)
545 * Perform the final unregister of an IDE interface. At the moment
546 * we don't refcount interfaces so this will also get split up.
549 * The caller must not hold the IDE locks
550 * The drive present/vanishing is not yet properly locked
551 * Take care with the callbacks. These have been split to avoid
552 * deadlocking the IDE layer. The shutdown callback is called
553 * before we take the lock and free resources. It is up to the
554 * caller to be sure there is no pending I/O here, and that
555 * the interface will not be reopened (present/vanishing locking
556 * isn't yet done BTW). After we commit to the final kill we
557 * call the cleanup callback with the ide locks held.
559 * Unregister restores the hwif structures to the default state.
560 * This is raving bonkers.
563 void ide_unregister(unsigned int index)
566 ide_hwif_t *hwif, *g;
567 static ide_hwif_t tmp_hwif; /* protected by ide_cfg_sem */
568 ide_hwgroup_t *hwgroup;
569 int irq_count = 0, unit;
571 BUG_ON(index >= MAX_HWIFS);
573 BUG_ON(in_interrupt());
574 BUG_ON(irqs_disabled());
576 spin_lock_irq(&ide_lock);
577 hwif = &ide_hwifs[index];
580 for (unit = 0; unit < MAX_DRIVES; ++unit) {
581 drive = &hwif->drives[unit];
584 spin_unlock_irq(&ide_lock);
585 device_unregister(&drive->gendev);
586 wait_for_completion(&drive->gendev_rel_comp);
587 spin_lock_irq(&ide_lock);
591 spin_unlock_irq(&ide_lock);
593 ide_proc_unregister_port(hwif);
595 hwgroup = hwif->hwgroup;
597 * free the irq if we were the only hwif using it
601 if (g->irq == hwif->irq)
604 } while (g != hwgroup->hwif);
606 free_irq(hwif->irq, hwgroup);
608 spin_lock_irq(&ide_lock);
610 * Note that we only release the standard ports,
611 * and do not even try to handle any extra ports
612 * allocated for weird IDE interface chipsets.
614 ide_hwif_release_regions(hwif);
617 * Remove us from the hwgroup, and free
618 * the hwgroup if we were the only member
620 if (hwif->next == hwif) {
621 BUG_ON(hwgroup->hwif != hwif);
624 /* There is another interface in hwgroup.
625 * Unlink us, and set hwgroup->drive and ->hwif to
629 while (g->next != hwif)
631 g->next = hwif->next;
632 if (hwgroup->hwif == hwif) {
633 /* Chose a random hwif for hwgroup->hwif.
634 * It's guaranteed that there are no drives
635 * left in the hwgroup.
637 BUG_ON(hwgroup->drive != NULL);
640 BUG_ON(hwgroup->hwif == hwif);
643 /* More messed up locking ... */
644 spin_unlock_irq(&ide_lock);
645 device_unregister(&hwif->gendev);
646 wait_for_completion(&hwif->gendev_rel_comp);
649 * Remove us from the kernel's knowledge
651 blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS);
652 kfree(hwif->sg_table);
653 unregister_blkdev(hwif->major, hwif->name);
654 spin_lock_irq(&ide_lock);
656 if (hwif->dma_base) {
657 (void) ide_release_dma(hwif);
660 hwif->dma_master = 0;
661 hwif->dma_command = 0;
662 hwif->dma_vendor1 = 0;
663 hwif->dma_status = 0;
664 hwif->dma_vendor3 = 0;
665 hwif->dma_prdtable = 0;
667 hwif->extra_base = 0;
668 hwif->extra_ports = 0;
671 /* copy original settings */
674 /* restore hwif data to pristine status */
675 init_hwif_data(hwif, index);
676 init_hwif_default(hwif, index);
678 ide_hwif_restore(hwif, &tmp_hwif);
681 spin_unlock_irq(&ide_lock);
685 EXPORT_SYMBOL(ide_unregister);
689 * ide_setup_ports - set up IDE interface ports
690 * @hw: register descriptions
691 * @base: base register
692 * @offsets: table of register offsets
693 * @ctrl: control register
695 * @irq: interrupt lie
697 * Setup hw_regs_t structure described by parameters. You
698 * may set up the hw structure yourself OR use this routine to
699 * do it for you. This is basically a helper
703 void ide_setup_ports ( hw_regs_t *hw,
704 unsigned long base, int *offsets,
705 unsigned long ctrl, unsigned long intr,
706 ide_ack_intr_t *ack_intr,
708 * ide_io_ops_t *iops,
714 memset(hw, 0, sizeof(hw_regs_t));
715 for (i = 0; i < IDE_NR_PORTS; i++) {
716 if (offsets[i] == -1) {
718 case IDE_CONTROL_OFFSET:
719 hw->io_ports[i] = ctrl;
721 #if defined(CONFIG_AMIGA) || defined(CONFIG_MAC)
723 hw->io_ports[i] = intr;
725 #endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */
731 hw->io_ports[i] = base + offsets[i];
736 hw->ack_intr = ack_intr;
743 * ide_register_hw_with_fixup - register IDE interface
744 * @hw: hardware registers
745 * @initializing: set while initializing built-in drivers
746 * @hwifp: pointer to returned hwif
747 * @fixup: fixup function
749 * Register an IDE interface, specifying exactly the registers etc.
750 * Set init=1 iff calling before probes have taken place.
752 * Returns -1 on error.
755 int ide_register_hw_with_fixup(hw_regs_t *hw, int initializing,
757 void(*fixup)(ide_hwif_t *hwif))
759 int index, retry = 1;
763 for (index = 0; index < MAX_HWIFS; ++index) {
764 hwif = &ide_hwifs[index];
765 if (hwif->hw.io_ports[IDE_DATA_OFFSET] == hw->io_ports[IDE_DATA_OFFSET])
768 for (index = 0; index < MAX_HWIFS; ++index) {
769 hwif = &ide_hwifs[index];
772 if ((!hwif->present && !hwif->mate && !initializing) ||
773 (!hwif->hw.io_ports[IDE_DATA_OFFSET] && initializing))
776 for (index = 0; index < MAX_HWIFS; index++)
777 ide_unregister(index);
782 ide_unregister(index);
783 else if (!hwif->hold) {
784 init_hwif_data(hwif, index);
785 init_hwif_default(hwif, index);
789 memcpy(&hwif->hw, hw, sizeof(*hw));
790 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->hw.io_ports));
793 hwif->chipset = hw->chipset;
794 hwif->gendev.parent = hw->dev;
797 probe_hwif_init_with_fixup(hwif, fixup);
798 ide_proc_register_port(hwif);
804 return (initializing || hwif->present) ? index : -1;
807 EXPORT_SYMBOL(ide_register_hw_with_fixup);
809 int ide_register_hw(hw_regs_t *hw, int initializing, ide_hwif_t **hwifp)
811 return ide_register_hw_with_fixup(hw, initializing, hwifp, NULL);
814 EXPORT_SYMBOL(ide_register_hw);
817 * Locks for IDE setting functionality
820 DECLARE_MUTEX(ide_setting_sem);
822 EXPORT_SYMBOL_GPL(ide_setting_sem);
825 * ide_spin_wait_hwgroup - wait for group
826 * @drive: drive in the group
828 * Wait for an IDE device group to go non busy and then return
829 * holding the ide_lock which guards the hwgroup->busy status
830 * and right to use it.
833 int ide_spin_wait_hwgroup (ide_drive_t *drive)
835 ide_hwgroup_t *hwgroup = HWGROUP(drive);
836 unsigned long timeout = jiffies + (3 * HZ);
838 spin_lock_irq(&ide_lock);
840 while (hwgroup->busy) {
841 unsigned long lflags;
842 spin_unlock_irq(&ide_lock);
843 local_irq_set(lflags);
844 if (time_after(jiffies, timeout)) {
845 local_irq_restore(lflags);
846 printk(KERN_ERR "%s: channel busy\n", drive->name);
849 local_irq_restore(lflags);
850 spin_lock_irq(&ide_lock);
855 EXPORT_SYMBOL(ide_spin_wait_hwgroup);
857 int set_io_32bit(ide_drive_t *drive, int arg)
859 if (drive->no_io_32bit)
862 if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1))
865 drive->io_32bit = arg;
866 #ifdef CONFIG_BLK_DEV_DTC2278
867 if (HWIF(drive)->chipset == ide_dtc2278)
868 HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg;
869 #endif /* CONFIG_BLK_DEV_DTC2278 */
873 static int set_ksettings(ide_drive_t *drive, int arg)
875 if (arg < 0 || arg > 1)
878 if (ide_spin_wait_hwgroup(drive))
880 drive->keep_settings = arg;
881 spin_unlock_irq(&ide_lock);
886 int set_using_dma(ide_drive_t *drive, int arg)
888 #ifdef CONFIG_BLK_DEV_IDEDMA
889 ide_hwif_t *hwif = drive->hwif;
892 if (arg < 0 || arg > 1)
895 if (!drive->id || !(drive->id->capability & 1))
898 if (hwif->ide_dma_check == NULL)
902 if (ide_spin_wait_hwgroup(drive))
905 * set ->busy flag, unlock and let it ride
907 hwif->hwgroup->busy = 1;
908 spin_unlock_irq(&ide_lock);
913 hwif->dma_off_quietly(drive);
914 if (ide_set_dma(drive) || hwif->ide_dma_on(drive))
920 * lock, clear ->busy flag and unlock before leaving
922 spin_lock_irq(&ide_lock);
923 hwif->hwgroup->busy = 0;
924 spin_unlock_irq(&ide_lock);
928 if (arg < 0 || arg > 1)
935 int set_pio_mode(ide_drive_t *drive, int arg)
939 if (arg < 0 || arg > 255)
942 if (!HWIF(drive)->tuneproc)
944 if (drive->special.b.set_tune)
946 ide_init_drive_cmd(&rq);
947 drive->tune_req = (u8) arg;
948 drive->special.b.set_tune = 1;
949 (void) ide_do_drive_cmd(drive, &rq, ide_wait);
953 static int set_unmaskirq(ide_drive_t *drive, int arg)
955 if (drive->no_unmask)
958 if (arg < 0 || arg > 1)
961 if (ide_spin_wait_hwgroup(drive))
964 spin_unlock_irq(&ide_lock);
970 * system_bus_clock - clock guess
972 * External version of the bus clock guess used by very old IDE drivers
973 * for things like VLB timings. Should not be used.
976 int system_bus_clock (void)
978 return((int) ((!system_bus_speed) ? ide_system_bus_speed() : system_bus_speed ));
981 EXPORT_SYMBOL(system_bus_clock);
983 static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
985 ide_drive_t *drive = dev->driver_data;
986 ide_hwif_t *hwif = HWIF(drive);
988 struct request_pm_state rqpm;
991 /* Call ACPI _GTM only once */
992 if (!(drive->dn % 2))
993 ide_acpi_get_timing(hwif);
995 memset(&rq, 0, sizeof(rq));
996 memset(&rqpm, 0, sizeof(rqpm));
997 memset(&args, 0, sizeof(args));
998 rq.cmd_type = REQ_TYPE_PM_SUSPEND;
1001 rqpm.pm_step = ide_pm_state_start_suspend;
1002 if (mesg.event == PM_EVENT_PRETHAW)
1003 mesg.event = PM_EVENT_FREEZE;
1004 rqpm.pm_state = mesg.event;
1006 return ide_do_drive_cmd(drive, &rq, ide_wait);
1009 static int generic_ide_resume(struct device *dev)
1011 ide_drive_t *drive = dev->driver_data;
1012 ide_hwif_t *hwif = HWIF(drive);
1013 ide_driver_t *drv = to_ide_driver(dev->driver);
1015 struct request_pm_state rqpm;
1019 /* Call ACPI _STM only once */
1020 if (!(drive->dn % 2))
1021 ide_acpi_push_timing(hwif);
1023 ide_acpi_exec_tfs(drive);
1025 memset(&rq, 0, sizeof(rq));
1026 memset(&rqpm, 0, sizeof(rqpm));
1027 memset(&args, 0, sizeof(args));
1028 rq.cmd_type = REQ_TYPE_PM_RESUME;
1031 rqpm.pm_step = ide_pm_state_start_resume;
1032 rqpm.pm_state = PM_EVENT_ON;
1034 err = ide_do_drive_cmd(drive, &rq, ide_head_wait);
1036 if (err == 0 && drv && drv->resume)
1042 int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev,
1043 unsigned int cmd, unsigned long arg)
1045 unsigned long flags;
1047 void __user *p = (void __user *)arg;
1048 int err = 0, (*setfunc)(ide_drive_t *, int);
1052 case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val;
1053 case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val;
1054 case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val;
1055 case HDIO_GET_DMA: val = &drive->using_dma; goto read_val;
1056 case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val;
1057 case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val;
1058 case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val;
1059 case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val;
1060 case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val;
1064 case HDIO_OBSOLETE_IDENTITY:
1065 case HDIO_GET_IDENTITY:
1066 if (bdev != bdev->bd_contains)
1068 if (drive->id_read == 0)
1070 if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142))
1075 return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP |
1076 drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP |
1077 drive->nice0 << IDE_NICE_0 |
1078 drive->nice1 << IDE_NICE_1 |
1079 drive->nice2 << IDE_NICE_2,
1080 (long __user *) arg);
1082 #ifdef CONFIG_IDE_TASK_IOCTL
1083 case HDIO_DRIVE_TASKFILE:
1084 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
1086 switch(drive->media) {
1088 return ide_taskfile_ioctl(drive, cmd, arg);
1092 #endif /* CONFIG_IDE_TASK_IOCTL */
1094 case HDIO_DRIVE_CMD:
1095 if (!capable(CAP_SYS_RAWIO))
1097 return ide_cmd_ioctl(drive, cmd, arg);
1099 case HDIO_DRIVE_TASK:
1100 if (!capable(CAP_SYS_RAWIO))
1102 return ide_task_ioctl(drive, cmd, arg);
1104 case HDIO_SCAN_HWIF:
1108 if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1109 if (copy_from_user(args, p, 3 * sizeof(int)))
1111 memset(&hw, 0, sizeof(hw));
1112 ide_init_hwif_ports(&hw, (unsigned long) args[0],
1113 (unsigned long) args[1], NULL);
1115 if (ide_register_hw(&hw, 0, NULL) == -1)
1119 case HDIO_UNREGISTER_HWIF:
1120 if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1121 /* (arg > MAX_HWIFS) checked in function */
1122 ide_unregister(arg);
1125 if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1126 if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1))))
1128 drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1;
1129 drv = *(ide_driver_t **)bdev->bd_disk->private_data;
1130 if (drive->dsc_overlap && !drv->supports_dsc_overlap) {
1131 drive->dsc_overlap = 0;
1134 drive->nice1 = (arg >> IDE_NICE_1) & 1;
1136 case HDIO_DRIVE_RESET:
1138 unsigned long flags;
1139 if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1142 * Abort the current command on the
1143 * group if there is one, taking
1144 * care not to allow anything else
1145 * to be queued and to die on the
1146 * spot if we miss one somehow
1149 spin_lock_irqsave(&ide_lock, flags);
1151 if (HWGROUP(drive)->resetting) {
1152 spin_unlock_irqrestore(&ide_lock, flags);
1156 ide_abort(drive, "drive reset");
1158 BUG_ON(HWGROUP(drive)->handler);
1160 /* Ensure nothing gets queued after we
1161 drop the lock. Reset will clear the busy */
1163 HWGROUP(drive)->busy = 1;
1164 spin_unlock_irqrestore(&ide_lock, flags);
1165 (void) ide_do_reset(drive);
1171 case CDROMCLOSETRAY:
1172 return scsi_cmd_ioctl(file, bdev->bd_disk, cmd, p);
1174 case HDIO_GET_BUSSTATE:
1175 if (!capable(CAP_SYS_ADMIN))
1177 if (put_user(HWIF(drive)->bus_state, (long __user *)arg))
1181 case HDIO_SET_BUSSTATE:
1182 if (!capable(CAP_SYS_ADMIN))
1184 if (HWIF(drive)->busproc)
1185 return HWIF(drive)->busproc(drive, (int)arg);
1192 down(&ide_setting_sem);
1193 spin_lock_irqsave(&ide_lock, flags);
1195 spin_unlock_irqrestore(&ide_lock, flags);
1196 up(&ide_setting_sem);
1197 return err >= 0 ? put_user(err, (long __user *)arg) : err;
1200 if (bdev != bdev->bd_contains)
1203 if (!capable(CAP_SYS_ADMIN))
1206 down(&ide_setting_sem);
1207 err = setfunc(drive, arg);
1208 up(&ide_setting_sem);
1214 EXPORT_SYMBOL(generic_ide_ioctl);
1217 * stridx() returns the offset of c within s,
1218 * or -1 if c is '\0' or not found within s.
1220 static int __init stridx (const char *s, char c)
1222 char *i = strchr(s, c);
1223 return (i && c) ? i - s : -1;
1227 * match_parm() does parsing for ide_setup():
1229 * 1. the first char of s must be '='.
1230 * 2. if the remainder matches one of the supplied keywords,
1231 * the index (1 based) of the keyword is negated and returned.
1232 * 3. if the remainder is a series of no more than max_vals numbers
1233 * separated by commas, the numbers are saved in vals[] and a
1234 * count of how many were saved is returned. Base10 is assumed,
1235 * and base16 is allowed when prefixed with "0x".
1236 * 4. otherwise, zero is returned.
1238 static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals)
1240 static const char *decimal = "0123456789";
1241 static const char *hex = "0123456789abcdef";
1246 * Try matching against the supplied keywords,
1247 * and return -(index+1) if we match one
1249 if (keywords != NULL) {
1250 for (i = 0; *keywords != NULL; ++i) {
1251 if (!strcmp(s, *keywords++))
1256 * Look for a series of no more than "max_vals"
1257 * numeric values separated by commas, in base10,
1258 * or base16 when prefixed with "0x".
1259 * Return a count of how many were found.
1261 for (n = 0; (i = stridx(decimal, *s)) >= 0;) {
1263 while ((i = stridx(decimal, *++s)) >= 0)
1264 vals[n] = (vals[n] * 10) + i;
1265 if (*s == 'x' && !vals[n]) {
1266 while ((i = stridx(hex, *++s)) >= 0)
1267 vals[n] = (vals[n] * 0x10) + i;
1269 if (++n == max_vals)
1271 if (*s == ',' || *s == ';')
1277 return 0; /* zero = nothing matched */
1280 #ifdef CONFIG_BLK_DEV_ALI14XX
1281 extern int probe_ali14xx;
1282 extern int ali14xx_init(void);
1284 #ifdef CONFIG_BLK_DEV_UMC8672
1285 extern int probe_umc8672;
1286 extern int umc8672_init(void);
1288 #ifdef CONFIG_BLK_DEV_DTC2278
1289 extern int probe_dtc2278;
1290 extern int dtc2278_init(void);
1292 #ifdef CONFIG_BLK_DEV_HT6560B
1293 extern int probe_ht6560b;
1294 extern int ht6560b_init(void);
1296 #ifdef CONFIG_BLK_DEV_QD65XX
1297 extern int probe_qd65xx;
1298 extern int qd65xx_init(void);
1301 static int __initdata is_chipset_set[MAX_HWIFS];
1304 * ide_setup() gets called VERY EARLY during initialization,
1305 * to handle kernel "command line" strings beginning with "hdx=" or "ide".
1307 * Remember to update Documentation/ide.txt if you change something here.
1309 static int __init ide_setup(char *s)
1314 unsigned int hw, unit;
1315 const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1);
1316 const char max_hwif = '0' + (MAX_HWIFS - 1);
1319 if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */
1320 return 0; /* driver and not us */
1322 if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2))
1325 printk(KERN_INFO "ide_setup: %s", s);
1328 #ifdef CONFIG_BLK_DEV_IDEDOUBLER
1329 if (!strcmp(s, "ide=doubler")) {
1330 extern int ide_doubler;
1332 printk(" : Enabled support for IDE doublers\n");
1336 #endif /* CONFIG_BLK_DEV_IDEDOUBLER */
1338 if (!strcmp(s, "ide=nodma")) {
1339 printk(" : Prevented DMA\n");
1344 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1345 if (!strcmp(s, "ide=reverse")) {
1346 ide_scan_direction = 1;
1347 printk(" : Enabled support for IDE inverse scan order.\n");
1352 #ifdef CONFIG_BLK_DEV_IDEACPI
1353 if (!strcmp(s, "ide=noacpi")) {
1354 //printk(" : Disable IDE ACPI support.\n");
1358 if (!strcmp(s, "ide=acpigtf")) {
1359 //printk(" : Enable IDE ACPI _GTF support.\n");
1363 if (!strcmp(s, "ide=acpionboot")) {
1364 //printk(" : Call IDE ACPI methods on boot.\n");
1365 ide_noacpionboot = 0;
1368 #endif /* CONFIG_BLK_DEV_IDEACPI */
1371 * Look for drive options: "hdx="
1373 if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) {
1374 const char *hd_words[] = {
1375 "none", "noprobe", "nowerr", "cdrom", "minus5",
1376 "autotune", "noautotune", "minus8", "swapdata", "bswap",
1377 "noflush", "remap", "remap63", "scsi", NULL };
1379 hw = unit / MAX_DRIVES;
1380 unit = unit % MAX_DRIVES;
1381 hwif = &ide_hwifs[hw];
1382 drive = &hwif->drives[unit];
1383 if (strncmp(s + 4, "ide-", 4) == 0) {
1384 strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req));
1387 switch (match_parm(&s[3], hd_words, vals, 3)) {
1388 case -1: /* "none" */
1389 case -2: /* "noprobe" */
1392 case -3: /* "nowerr" */
1393 drive->bad_wstat = BAD_R_STAT;
1396 case -4: /* "cdrom" */
1398 drive->media = ide_cdrom;
1399 /* an ATAPI device ignores DRDY */
1400 drive->ready_stat = 0;
1403 case -6: /* "autotune" */
1404 drive->autotune = IDE_TUNE_AUTO;
1405 goto obsolete_option;
1406 case -7: /* "noautotune" */
1407 drive->autotune = IDE_TUNE_NOAUTO;
1408 goto obsolete_option;
1409 case -9: /* "swapdata" */
1410 case -10: /* "bswap" */
1413 case -11: /* noflush */
1416 case -12: /* "remap" */
1417 drive->remap_0_to_1 = 1;
1419 case -13: /* "remap63" */
1422 case -14: /* "scsi" */
1425 case 3: /* cyl,head,sect */
1426 drive->media = ide_disk;
1427 drive->ready_stat = READY_STAT;
1428 drive->cyl = drive->bios_cyl = vals[0];
1429 drive->head = drive->bios_head = vals[1];
1430 drive->sect = drive->bios_sect = vals[2];
1432 drive->forced_geom = 1;
1440 if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e')
1443 * Look for bus speed option: "idebus="
1445 if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') {
1446 if (match_parm(&s[6], NULL, vals, 1) != 1)
1448 if (vals[0] >= 20 && vals[0] <= 66) {
1449 idebus_parameter = vals[0];
1451 printk(" -- BAD BUS SPEED! Expected value from 20 to 66");
1455 * Look for interface options: "idex="
1457 if (s[3] >= '0' && s[3] <= max_hwif) {
1459 * Be VERY CAREFUL changing this: note hardcoded indexes below
1460 * (-8, -9, -10) are reserved to ease the hardcoding.
1462 static const char *ide_words[] = {
1463 "noprobe", "serialize", "minus3", "minus4",
1464 "reset", "dma", "ata66", "minus8", "minus9",
1465 "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb",
1466 "dtc2278", "umc8672", "ali14xx", NULL };
1468 hwif = &ide_hwifs[hw];
1469 i = match_parm(&s[4], ide_words, vals, 3);
1472 * Cryptic check to ensure chipset not already set for hwif.
1473 * Note: we can't depend on hwif->chipset here.
1475 if ((i >= -18 && i <= -11) || (i > 0 && i <= 3)) {
1476 /* chipset already specified */
1477 if (is_chipset_set[hw])
1479 if (i > -18 && i <= -11) {
1480 /* these drivers are for "ide0=" only */
1483 /* chipset already specified for 2nd port */
1484 if (is_chipset_set[hw+1])
1487 is_chipset_set[hw] = 1;
1492 #ifdef CONFIG_BLK_DEV_ALI14XX
1493 case -17: /* "ali14xx" */
1497 #ifdef CONFIG_BLK_DEV_UMC8672
1498 case -16: /* "umc8672" */
1502 #ifdef CONFIG_BLK_DEV_DTC2278
1503 case -15: /* "dtc2278" */
1507 #ifdef CONFIG_BLK_DEV_CMD640
1508 case -14: /* "cmd640_vlb" */
1510 extern int cmd640_vlb; /* flag for cmd640.c */
1515 #ifdef CONFIG_BLK_DEV_HT6560B
1516 case -13: /* "ht6560b" */
1520 #ifdef CONFIG_BLK_DEV_QD65XX
1521 case -12: /* "qd65xx" */
1525 #ifdef CONFIG_BLK_DEV_4DRIVES
1526 case -11: /* "four" drives on one set of ports */
1528 ide_hwif_t *mate = &ide_hwifs[hw^1];
1529 mate->drives[0].select.all ^= 0x20;
1530 mate->drives[1].select.all ^= 0x20;
1531 hwif->chipset = mate->chipset = ide_4drives;
1532 mate->irq = hwif->irq;
1533 memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports));
1536 hwif->serialized = mate->serialized = 1;
1537 goto obsolete_option;
1539 #endif /* CONFIG_BLK_DEV_4DRIVES */
1540 case -10: /* minus10 */
1541 case -9: /* minus9 */
1542 case -8: /* minus8 */
1546 case -7: /* ata66 */
1547 #ifdef CONFIG_BLK_DEV_IDEPCI
1548 hwif->udma_four = 1;
1549 goto obsolete_option;
1555 goto obsolete_option;
1556 case -5: /* "reset" */
1558 goto obsolete_option;
1559 case -2: /* "serialize" */
1560 hwif->mate = &ide_hwifs[hw^1];
1561 hwif->mate->mate = hwif;
1562 hwif->serialized = hwif->mate->serialized = 1;
1563 goto obsolete_option;
1565 case -1: /* "noprobe" */
1570 vals[1] = vals[0] + 0x206; /* default ctl */
1571 case 2: /* base,ctl */
1572 vals[2] = 0; /* default irq = probe for it */
1573 case 3: /* base,ctl,irq */
1574 hwif->hw.irq = vals[2];
1575 ide_init_hwif_ports(&hwif->hw, (unsigned long) vals[0], (unsigned long) vals[1], &hwif->irq);
1576 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports));
1577 hwif->irq = vals[2];
1579 hwif->chipset = ide_forced;
1580 goto obsolete_option;
1582 case 0: goto bad_option;
1584 printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n");
1589 printk(" -- BAD OPTION\n");
1592 printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n");
1595 printk("-- NOT SUPPORTED ON ide%d", hw);
1601 extern void __init pnpide_init(void);
1602 extern void __exit pnpide_exit(void);
1603 extern void __init h8300_ide_init(void);
1606 * probe_for_hwifs() finds/initializes "known" IDE interfaces
1608 static void __init probe_for_hwifs (void)
1610 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1611 ide_scan_pcibus(ide_scan_direction);
1614 #ifdef CONFIG_ETRAX_IDE
1616 extern void init_e100_ide(void);
1619 #endif /* CONFIG_ETRAX_IDE */
1620 #ifdef CONFIG_BLK_DEV_CMD640
1622 extern void ide_probe_for_cmd640x(void);
1623 ide_probe_for_cmd640x();
1625 #endif /* CONFIG_BLK_DEV_CMD640 */
1626 #ifdef CONFIG_BLK_DEV_IDE_PMAC
1628 extern int pmac_ide_probe(void);
1629 (void)pmac_ide_probe();
1631 #endif /* CONFIG_BLK_DEV_IDE_PMAC */
1632 #ifdef CONFIG_BLK_DEV_GAYLE
1634 extern void gayle_init(void);
1637 #endif /* CONFIG_BLK_DEV_GAYLE */
1638 #ifdef CONFIG_BLK_DEV_FALCON_IDE
1640 extern void falconide_init(void);
1643 #endif /* CONFIG_BLK_DEV_FALCON_IDE */
1644 #ifdef CONFIG_BLK_DEV_MAC_IDE
1646 extern void macide_init(void);
1649 #endif /* CONFIG_BLK_DEV_MAC_IDE */
1650 #ifdef CONFIG_BLK_DEV_Q40IDE
1652 extern void q40ide_init(void);
1655 #endif /* CONFIG_BLK_DEV_Q40IDE */
1656 #ifdef CONFIG_BLK_DEV_BUDDHA
1658 extern void buddha_init(void);
1661 #endif /* CONFIG_BLK_DEV_BUDDHA */
1662 #ifdef CONFIG_BLK_DEV_IDEPNP
1674 EXPORT_SYMBOL(ide_lock);
1676 static int ide_bus_match(struct device *dev, struct device_driver *drv)
1681 static char *media_string(ide_drive_t *drive)
1683 switch (drive->media) {
1699 static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf)
1701 ide_drive_t *drive = to_ide_device(dev);
1702 return sprintf(buf, "%s\n", media_string(drive));
1705 static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf)
1707 ide_drive_t *drive = to_ide_device(dev);
1708 return sprintf(buf, "%s\n", drive->name);
1711 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
1713 ide_drive_t *drive = to_ide_device(dev);
1714 return sprintf(buf, "ide:m-%s\n", media_string(drive));
1717 static struct device_attribute ide_dev_attrs[] = {
1719 __ATTR_RO(drivename),
1720 __ATTR_RO(modalias),
1724 static int ide_uevent(struct device *dev, char **envp, int num_envp,
1725 char *buffer, int buffer_size)
1727 ide_drive_t *drive = to_ide_device(dev);
1731 add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
1732 "MEDIA=%s", media_string(drive));
1733 add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
1734 "DRIVENAME=%s", drive->name);
1735 add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
1736 "MODALIAS=ide:m-%s", media_string(drive));
1741 static int generic_ide_probe(struct device *dev)
1743 ide_drive_t *drive = to_ide_device(dev);
1744 ide_driver_t *drv = to_ide_driver(dev->driver);
1746 return drv->probe ? drv->probe(drive) : -ENODEV;
1749 static int generic_ide_remove(struct device *dev)
1751 ide_drive_t *drive = to_ide_device(dev);
1752 ide_driver_t *drv = to_ide_driver(dev->driver);
1760 static void generic_ide_shutdown(struct device *dev)
1762 ide_drive_t *drive = to_ide_device(dev);
1763 ide_driver_t *drv = to_ide_driver(dev->driver);
1765 if (dev->driver && drv->shutdown)
1766 drv->shutdown(drive);
1769 struct bus_type ide_bus_type = {
1771 .match = ide_bus_match,
1772 .uevent = ide_uevent,
1773 .probe = generic_ide_probe,
1774 .remove = generic_ide_remove,
1775 .shutdown = generic_ide_shutdown,
1776 .dev_attrs = ide_dev_attrs,
1777 .suspend = generic_ide_suspend,
1778 .resume = generic_ide_resume,
1781 EXPORT_SYMBOL_GPL(ide_bus_type);
1784 * This is gets invoked once during initialization, to set *everything* up
1786 static int __init ide_init(void)
1790 printk(KERN_INFO "Uniform Multi-Platform E-IDE driver " REVISION "\n");
1791 system_bus_speed = ide_system_bus_speed();
1793 ret = bus_register(&ide_bus_type);
1795 printk(KERN_WARNING "IDE: bus_register error: %d\n", ret);
1803 #ifdef CONFIG_BLK_DEV_ALI14XX
1805 (void)ali14xx_init();
1807 #ifdef CONFIG_BLK_DEV_UMC8672
1809 (void)umc8672_init();
1811 #ifdef CONFIG_BLK_DEV_DTC2278
1813 (void)dtc2278_init();
1815 #ifdef CONFIG_BLK_DEV_HT6560B
1817 (void)ht6560b_init();
1819 #ifdef CONFIG_BLK_DEV_QD65XX
1821 (void)qd65xx_init();
1824 /* Probe for special PCI and other "known" interface chipsets. */
1831 static char *options = NULL;
1832 module_param(options, charp, 0);
1833 MODULE_LICENSE("GPL");
1835 static void __init parse_options (char *line)
1839 if (line == NULL || !*line)
1841 while ((line = next) != NULL) {
1842 if ((next = strchr(line,' ')) != NULL)
1844 if (!ide_setup(line))
1845 printk (KERN_INFO "Unknown option '%s'\n", line);
1849 int __init init_module (void)
1851 parse_options(options);
1855 void __exit cleanup_module (void)
1859 for (index = 0; index < MAX_HWIFS; ++index)
1860 ide_unregister(index);
1862 #ifdef CONFIG_BLK_DEV_IDEPNP
1868 bus_unregister(&ide_bus_type);
1873 __setup("", ide_setup);
1875 module_init(ide_init);