Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
59bca8cc BZ |
2 | * Copyright (C) 1994-1998 Linus Torvalds & authors (see below) |
3 | * Copyrifht (C) 2003-2005, 2007 Bartlomiej Zolnierkiewicz | |
1da177e4 LT |
4 | */ |
5 | ||
6 | /* | |
7 | * Mostly written by Mark Lord <mlord@pobox.com> | |
8 | * and Gadi Oxman <gadio@netvision.net.il> | |
9 | * and Andre Hedrick <andre@linux-ide.org> | |
10 | * | |
11 | * See linux/MAINTAINERS for address of current maintainer. | |
12 | * | |
13 | * This is the multiple IDE interface driver, as evolved from hd.c. | |
14 | * It supports up to MAX_HWIFS IDE interfaces, on one or more IRQs | |
15 | * (usually 14 & 15). | |
16 | * There can be up to two drives per interface, as per the ATA-2 spec. | |
17 | * | |
1da177e4 LT |
18 | * ... |
19 | * | |
20 | * From hd.c: | |
21 | * | | |
22 | * | It traverses the request-list, using interrupts to jump between functions. | |
23 | * | As nearly all functions can be called within interrupts, we may not sleep. | |
24 | * | Special care is recommended. Have Fun! | |
25 | * | | |
26 | * | modified by Drew Eckhardt to check nr of hd's from the CMOS. | |
27 | * | | |
28 | * | Thanks to Branko Lankester, lankeste@fwi.uva.nl, who found a bug | |
29 | * | in the early extended-partition checks and added DM partitions. | |
30 | * | | |
31 | * | Early work on error handling by Mika Liljeberg (liljeber@cs.Helsinki.FI). | |
32 | * | | |
33 | * | IRQ-unmask, drive-id, multiple-mode, support for ">16 heads", | |
34 | * | and general streamlining by Mark Lord (mlord@pobox.com). | |
35 | * | |
36 | * October, 1994 -- Complete line-by-line overhaul for linux 1.1.x, by: | |
37 | * | |
38 | * Mark Lord (mlord@pobox.com) (IDE Perf.Pkg) | |
39 | * Delman Lee (delman@ieee.org) ("Mr. atdisk2") | |
40 | * Scott Snyder (snyder@fnald0.fnal.gov) (ATAPI IDE cd-rom) | |
41 | * | |
42 | * This was a rewrite of just about everything from hd.c, though some original | |
43 | * code is still sprinkled about. Think of it as a major evolution, with | |
44 | * inspiration from lots of linux users, esp. hamish@zot.apana.org.au | |
1da177e4 LT |
45 | */ |
46 | ||
1da177e4 LT |
47 | #define _IDE_C /* Tell ide.h it's really us */ |
48 | ||
1da177e4 LT |
49 | #include <linux/module.h> |
50 | #include <linux/types.h> | |
51 | #include <linux/string.h> | |
52 | #include <linux/kernel.h> | |
53 | #include <linux/timer.h> | |
54 | #include <linux/mm.h> | |
55 | #include <linux/interrupt.h> | |
56 | #include <linux/major.h> | |
57 | #include <linux/errno.h> | |
58 | #include <linux/genhd.h> | |
59 | #include <linux/blkpg.h> | |
60 | #include <linux/slab.h> | |
61 | #include <linux/init.h> | |
62 | #include <linux/pci.h> | |
63 | #include <linux/delay.h> | |
64 | #include <linux/ide.h> | |
1da177e4 LT |
65 | #include <linux/completion.h> |
66 | #include <linux/reboot.h> | |
67 | #include <linux/cdrom.h> | |
68 | #include <linux/seq_file.h> | |
69 | #include <linux/device.h> | |
70 | #include <linux/bitops.h> | |
71 | ||
72 | #include <asm/byteorder.h> | |
73 | #include <asm/irq.h> | |
74 | #include <asm/uaccess.h> | |
75 | #include <asm/io.h> | |
76 | ||
77 | ||
78 | /* default maximum number of failures */ | |
79 | #define IDE_DEFAULT_MAX_FAILURES 1 | |
80 | ||
f74c9141 BZ |
81 | struct class *ide_port_class; |
82 | ||
1da177e4 LT |
83 | static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR, |
84 | IDE2_MAJOR, IDE3_MAJOR, | |
85 | IDE4_MAJOR, IDE5_MAJOR, | |
86 | IDE6_MAJOR, IDE7_MAJOR, | |
87 | IDE8_MAJOR, IDE9_MAJOR }; | |
88 | ||
ef29888e | 89 | DEFINE_MUTEX(ide_cfg_mtx); |
1da177e4 | 90 | |
931ee0dc BZ |
91 | __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock); |
92 | EXPORT_SYMBOL(ide_lock); | |
1da177e4 | 93 | |
1da177e4 | 94 | ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */ |
1da177e4 | 95 | |
43514ed1 BZ |
96 | static void ide_port_init_devices_data(ide_hwif_t *); |
97 | ||
1da177e4 LT |
98 | /* |
99 | * Do not even *think* about calling this! | |
100 | */ | |
cbb010c1 | 101 | void ide_init_port_data(ide_hwif_t *hwif, unsigned int index) |
1da177e4 | 102 | { |
1da177e4 LT |
103 | /* bulk initialize hwif & drive info with zeros */ |
104 | memset(hwif, 0, sizeof(ide_hwif_t)); | |
105 | ||
106 | /* fill in any non-zero initial values */ | |
107 | hwif->index = index; | |
108 | hwif->major = ide_hwif_to_major[index]; | |
109 | ||
110 | hwif->name[0] = 'i'; | |
111 | hwif->name[1] = 'd'; | |
112 | hwif->name[2] = 'e'; | |
113 | hwif->name[3] = '0' + index; | |
114 | ||
115 | hwif->bus_state = BUSSTATE_ON; | |
116 | ||
f36d4024 | 117 | init_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
118 | |
119 | default_hwif_iops(hwif); | |
120 | default_hwif_transport(hwif); | |
43514ed1 BZ |
121 | |
122 | ide_port_init_devices_data(hwif); | |
123 | } | |
124 | EXPORT_SYMBOL_GPL(ide_init_port_data); | |
125 | ||
126 | static void ide_port_init_devices_data(ide_hwif_t *hwif) | |
127 | { | |
128 | int unit; | |
129 | ||
1da177e4 LT |
130 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
131 | ide_drive_t *drive = &hwif->drives[unit]; | |
43514ed1 BZ |
132 | u8 j = (hwif->index * MAX_DRIVES) + unit; |
133 | ||
134 | memset(drive, 0, sizeof(*drive)); | |
1da177e4 LT |
135 | |
136 | drive->media = ide_disk; | |
137 | drive->select.all = (unit<<4)|0xa0; | |
138 | drive->hwif = hwif; | |
1da177e4 LT |
139 | drive->ready_stat = READY_STAT; |
140 | drive->bad_wstat = BAD_W_STAT; | |
141 | drive->special.b.recalibrate = 1; | |
142 | drive->special.b.set_geometry = 1; | |
143 | drive->name[0] = 'h'; | |
144 | drive->name[1] = 'd'; | |
43514ed1 | 145 | drive->name[2] = 'a' + j; |
1da177e4 | 146 | drive->max_failures = IDE_DEFAULT_MAX_FAILURES; |
43514ed1 | 147 | |
1da177e4 | 148 | INIT_LIST_HEAD(&drive->list); |
f36d4024 | 149 | init_completion(&drive->gendev_rel_comp); |
1da177e4 LT |
150 | } |
151 | } | |
43514ed1 | 152 | |
1da177e4 LT |
153 | static void __init init_ide_data (void) |
154 | { | |
1da177e4 | 155 | unsigned int index; |
1da177e4 LT |
156 | |
157 | /* Initialise all interface structures */ | |
158 | for (index = 0; index < MAX_HWIFS; ++index) { | |
05734266 BZ |
159 | ide_hwif_t *hwif = &ide_hwifs[index]; |
160 | ||
cbb010c1 | 161 | ide_init_port_data(hwif, index); |
1da177e4 | 162 | } |
1da177e4 LT |
163 | } |
164 | ||
fbd13088 | 165 | void ide_remove_port_from_hwgroup(ide_hwif_t *hwif) |
96e5ad30 BZ |
166 | { |
167 | ide_hwgroup_t *hwgroup = hwif->hwgroup; | |
168 | ||
169 | spin_lock_irq(&ide_lock); | |
170 | /* | |
171 | * Remove us from the hwgroup, and free | |
172 | * the hwgroup if we were the only member | |
173 | */ | |
174 | if (hwif->next == hwif) { | |
175 | BUG_ON(hwgroup->hwif != hwif); | |
176 | kfree(hwgroup); | |
177 | } else { | |
178 | /* There is another interface in hwgroup. | |
179 | * Unlink us, and set hwgroup->drive and ->hwif to | |
180 | * something sane. | |
181 | */ | |
182 | ide_hwif_t *g = hwgroup->hwif; | |
183 | ||
184 | while (g->next != hwif) | |
185 | g = g->next; | |
186 | g->next = hwif->next; | |
187 | if (hwgroup->hwif == hwif) { | |
188 | /* Chose a random hwif for hwgroup->hwif. | |
189 | * It's guaranteed that there are no drives | |
190 | * left in the hwgroup. | |
191 | */ | |
192 | BUG_ON(hwgroup->drive != NULL); | |
193 | hwgroup->hwif = g; | |
194 | } | |
195 | BUG_ON(hwgroup->hwif == hwif); | |
196 | } | |
197 | spin_unlock_irq(&ide_lock); | |
198 | } | |
199 | ||
71bf9f6f | 200 | /* Called with ide_lock held. */ |
2dde7861 | 201 | static void __ide_port_unregister_devices(ide_hwif_t *hwif) |
71bf9f6f BZ |
202 | { |
203 | int i; | |
204 | ||
205 | for (i = 0; i < MAX_DRIVES; i++) { | |
206 | ide_drive_t *drive = &hwif->drives[i]; | |
207 | ||
208 | if (drive->present) { | |
209 | spin_unlock_irq(&ide_lock); | |
210 | device_unregister(&drive->gendev); | |
211 | wait_for_completion(&drive->gendev_rel_comp); | |
212 | spin_lock_irq(&ide_lock); | |
213 | } | |
214 | } | |
215 | } | |
216 | ||
2dde7861 BZ |
217 | void ide_port_unregister_devices(ide_hwif_t *hwif) |
218 | { | |
219 | mutex_lock(&ide_cfg_mtx); | |
220 | spin_lock_irq(&ide_lock); | |
221 | __ide_port_unregister_devices(hwif); | |
222 | hwif->present = 0; | |
223 | ide_port_init_devices_data(hwif); | |
224 | spin_unlock_irq(&ide_lock); | |
225 | mutex_unlock(&ide_cfg_mtx); | |
226 | } | |
227 | EXPORT_SYMBOL_GPL(ide_port_unregister_devices); | |
228 | ||
1da177e4 | 229 | /** |
020e322d | 230 | * ide_unregister - free an IDE interface |
387750c3 | 231 | * @hwif: IDE interface |
1da177e4 LT |
232 | * |
233 | * Perform the final unregister of an IDE interface. At the moment | |
234 | * we don't refcount interfaces so this will also get split up. | |
235 | * | |
236 | * Locking: | |
237 | * The caller must not hold the IDE locks | |
238 | * The drive present/vanishing is not yet properly locked | |
239 | * Take care with the callbacks. These have been split to avoid | |
240 | * deadlocking the IDE layer. The shutdown callback is called | |
241 | * before we take the lock and free resources. It is up to the | |
242 | * caller to be sure there is no pending I/O here, and that | |
020e322d SS |
243 | * the interface will not be reopened (present/vanishing locking |
244 | * isn't yet done BTW). After we commit to the final kill we | |
1da177e4 LT |
245 | * call the cleanup callback with the ide locks held. |
246 | * | |
247 | * Unregister restores the hwif structures to the default state. | |
248 | * This is raving bonkers. | |
249 | */ | |
250 | ||
387750c3 | 251 | void ide_unregister(ide_hwif_t *hwif) |
1da177e4 | 252 | { |
387750c3 | 253 | ide_hwif_t *g; |
1da177e4 | 254 | ide_hwgroup_t *hwgroup; |
71bf9f6f | 255 | int irq_count = 0; |
1da177e4 | 256 | |
1da177e4 LT |
257 | BUG_ON(in_interrupt()); |
258 | BUG_ON(irqs_disabled()); | |
bd8a59e2 | 259 | |
ef29888e | 260 | mutex_lock(&ide_cfg_mtx); |
1da177e4 | 261 | |
bd8a59e2 BZ |
262 | spin_lock_irq(&ide_lock); |
263 | if (hwif->present) { | |
264 | __ide_port_unregister_devices(hwif); | |
265 | hwif->present = 0; | |
266 | } | |
1da177e4 LT |
267 | spin_unlock_irq(&ide_lock); |
268 | ||
5cbf79cd | 269 | ide_proc_unregister_port(hwif); |
1da177e4 LT |
270 | |
271 | hwgroup = hwif->hwgroup; | |
272 | /* | |
273 | * free the irq if we were the only hwif using it | |
274 | */ | |
275 | g = hwgroup->hwif; | |
276 | do { | |
277 | if (g->irq == hwif->irq) | |
278 | ++irq_count; | |
279 | g = g->next; | |
280 | } while (g != hwgroup->hwif); | |
281 | if (irq_count == 1) | |
282 | free_irq(hwif->irq, hwgroup); | |
283 | ||
96e5ad30 | 284 | ide_remove_port_from_hwgroup(hwif); |
1da177e4 | 285 | |
f74c9141 | 286 | device_unregister(hwif->portdev); |
1da177e4 | 287 | device_unregister(&hwif->gendev); |
f36d4024 | 288 | wait_for_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
289 | |
290 | /* | |
291 | * Remove us from the kernel's knowledge | |
292 | */ | |
293 | blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); | |
294 | kfree(hwif->sg_table); | |
295 | unregister_blkdev(hwif->major, hwif->name); | |
1da177e4 | 296 | |
93de00fd | 297 | if (hwif->dma_base) |
0d1bad21 | 298 | ide_release_dma_engine(hwif); |
1da177e4 | 299 | |
2b54ed94 | 300 | spin_lock_irq(&ide_lock); |
1da177e4 | 301 | /* restore hwif data to pristine status */ |
387750c3 | 302 | ide_init_port_data(hwif, hwif->index); |
1da177e4 | 303 | spin_unlock_irq(&ide_lock); |
2b54ed94 | 304 | |
ef29888e | 305 | mutex_unlock(&ide_cfg_mtx); |
1da177e4 LT |
306 | } |
307 | ||
308 | EXPORT_SYMBOL(ide_unregister); | |
309 | ||
57c802e8 BZ |
310 | void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw) |
311 | { | |
4c3032d8 | 312 | memcpy(&hwif->io_ports, &hw->io_ports, sizeof(hwif->io_ports)); |
57c802e8 | 313 | hwif->irq = hw->irq; |
57c802e8 BZ |
314 | hwif->chipset = hw->chipset; |
315 | hwif->gendev.parent = hw->dev; | |
316 | hwif->ack_intr = hw->ack_intr; | |
317 | } | |
318 | EXPORT_SYMBOL_GPL(ide_init_port_hw); | |
319 | ||
1da177e4 LT |
320 | /* |
321 | * Locks for IDE setting functionality | |
322 | */ | |
323 | ||
f9383c42 | 324 | DEFINE_MUTEX(ide_setting_mtx); |
1da177e4 | 325 | |
f9383c42 | 326 | EXPORT_SYMBOL_GPL(ide_setting_mtx); |
1497943e | 327 | |
1da177e4 LT |
328 | /** |
329 | * ide_spin_wait_hwgroup - wait for group | |
330 | * @drive: drive in the group | |
331 | * | |
332 | * Wait for an IDE device group to go non busy and then return | |
333 | * holding the ide_lock which guards the hwgroup->busy status | |
334 | * and right to use it. | |
335 | */ | |
336 | ||
337 | int ide_spin_wait_hwgroup (ide_drive_t *drive) | |
338 | { | |
339 | ide_hwgroup_t *hwgroup = HWGROUP(drive); | |
340 | unsigned long timeout = jiffies + (3 * HZ); | |
341 | ||
342 | spin_lock_irq(&ide_lock); | |
343 | ||
344 | while (hwgroup->busy) { | |
345 | unsigned long lflags; | |
346 | spin_unlock_irq(&ide_lock); | |
347 | local_irq_set(lflags); | |
348 | if (time_after(jiffies, timeout)) { | |
349 | local_irq_restore(lflags); | |
350 | printk(KERN_ERR "%s: channel busy\n", drive->name); | |
351 | return -EBUSY; | |
352 | } | |
353 | local_irq_restore(lflags); | |
354 | spin_lock_irq(&ide_lock); | |
355 | } | |
356 | return 0; | |
357 | } | |
358 | ||
359 | EXPORT_SYMBOL(ide_spin_wait_hwgroup); | |
360 | ||
7662d046 | 361 | int set_io_32bit(ide_drive_t *drive, int arg) |
1da177e4 | 362 | { |
1497943e BZ |
363 | if (drive->no_io_32bit) |
364 | return -EPERM; | |
365 | ||
366 | if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1)) | |
367 | return -EINVAL; | |
368 | ||
644a9d76 BZ |
369 | if (ide_spin_wait_hwgroup(drive)) |
370 | return -EBUSY; | |
371 | ||
1da177e4 | 372 | drive->io_32bit = arg; |
644a9d76 BZ |
373 | |
374 | spin_unlock_irq(&ide_lock); | |
375 | ||
1da177e4 LT |
376 | return 0; |
377 | } | |
378 | ||
1497943e BZ |
379 | static int set_ksettings(ide_drive_t *drive, int arg) |
380 | { | |
381 | if (arg < 0 || arg > 1) | |
382 | return -EINVAL; | |
383 | ||
384 | if (ide_spin_wait_hwgroup(drive)) | |
385 | return -EBUSY; | |
386 | drive->keep_settings = arg; | |
387 | spin_unlock_irq(&ide_lock); | |
388 | ||
389 | return 0; | |
390 | } | |
391 | ||
7662d046 | 392 | int set_using_dma(ide_drive_t *drive, int arg) |
1da177e4 LT |
393 | { |
394 | #ifdef CONFIG_BLK_DEV_IDEDMA | |
87996204 BZ |
395 | ide_hwif_t *hwif = drive->hwif; |
396 | int err = -EPERM; | |
397 | ||
1497943e BZ |
398 | if (arg < 0 || arg > 1) |
399 | return -EINVAL; | |
400 | ||
1da177e4 | 401 | if (!drive->id || !(drive->id->capability & 1)) |
87996204 BZ |
402 | goto out; |
403 | ||
5e37bdc0 | 404 | if (hwif->dma_ops == NULL) |
87996204 BZ |
405 | goto out; |
406 | ||
407 | err = -EBUSY; | |
408 | if (ide_spin_wait_hwgroup(drive)) | |
409 | goto out; | |
410 | /* | |
411 | * set ->busy flag, unlock and let it ride | |
412 | */ | |
413 | hwif->hwgroup->busy = 1; | |
414 | spin_unlock_irq(&ide_lock); | |
415 | ||
416 | err = 0; | |
417 | ||
1da177e4 | 418 | if (arg) { |
23b1bd45 | 419 | if (ide_set_dma(drive)) |
87996204 | 420 | err = -EIO; |
7469aaf6 BZ |
421 | } else |
422 | ide_dma_off(drive); | |
87996204 BZ |
423 | |
424 | /* | |
425 | * lock, clear ->busy flag and unlock before leaving | |
426 | */ | |
427 | spin_lock_irq(&ide_lock); | |
428 | hwif->hwgroup->busy = 0; | |
429 | spin_unlock_irq(&ide_lock); | |
430 | out: | |
431 | return err; | |
1da177e4 | 432 | #else |
1497943e BZ |
433 | if (arg < 0 || arg > 1) |
434 | return -EINVAL; | |
435 | ||
1da177e4 LT |
436 | return -EPERM; |
437 | #endif | |
438 | } | |
439 | ||
7662d046 | 440 | int set_pio_mode(ide_drive_t *drive, int arg) |
1da177e4 | 441 | { |
5b114715 | 442 | struct request *rq; |
784506cb | 443 | ide_hwif_t *hwif = drive->hwif; |
ac95beed | 444 | const struct ide_port_ops *port_ops = hwif->port_ops; |
1da177e4 | 445 | |
1497943e BZ |
446 | if (arg < 0 || arg > 255) |
447 | return -EINVAL; | |
448 | ||
ac95beed | 449 | if (port_ops == NULL || port_ops->set_pio_mode == NULL || |
784506cb | 450 | (hwif->host_flags & IDE_HFLAG_NO_SET_MODE)) |
1da177e4 | 451 | return -ENOSYS; |
26bcb879 | 452 | |
1da177e4 LT |
453 | if (drive->special.b.set_tune) |
454 | return -EBUSY; | |
145b75e9 | 455 | |
5b114715 FT |
456 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
457 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
145b75e9 | 458 | |
1da177e4 LT |
459 | drive->tune_req = (u8) arg; |
460 | drive->special.b.set_tune = 1; | |
5b114715 FT |
461 | |
462 | blk_execute_rq(drive->queue, NULL, rq, 0); | |
463 | blk_put_request(rq); | |
464 | ||
1da177e4 LT |
465 | return 0; |
466 | } | |
467 | ||
1497943e BZ |
468 | static int set_unmaskirq(ide_drive_t *drive, int arg) |
469 | { | |
470 | if (drive->no_unmask) | |
471 | return -EPERM; | |
472 | ||
473 | if (arg < 0 || arg > 1) | |
474 | return -EINVAL; | |
475 | ||
476 | if (ide_spin_wait_hwgroup(drive)) | |
477 | return -EBUSY; | |
478 | drive->unmask = arg; | |
479 | spin_unlock_irq(&ide_lock); | |
480 | ||
481 | return 0; | |
482 | } | |
483 | ||
b887d2e6 | 484 | static int generic_ide_suspend(struct device *dev, pm_message_t mesg) |
1da177e4 LT |
485 | { |
486 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 487 | ide_hwif_t *hwif = HWIF(drive); |
5b114715 | 488 | struct request *rq; |
1da177e4 LT |
489 | struct request_pm_state rqpm; |
490 | ide_task_t args; | |
5e32132b | 491 | int ret; |
1da177e4 | 492 | |
e3a59b4d HR |
493 | /* Call ACPI _GTM only once */ |
494 | if (!(drive->dn % 2)) | |
495 | ide_acpi_get_timing(hwif); | |
496 | ||
1da177e4 LT |
497 | memset(&rqpm, 0, sizeof(rqpm)); |
498 | memset(&args, 0, sizeof(args)); | |
5b114715 FT |
499 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
500 | rq->cmd_type = REQ_TYPE_PM_SUSPEND; | |
501 | rq->special = &args; | |
502 | rq->data = &rqpm; | |
1da177e4 | 503 | rqpm.pm_step = ide_pm_state_start_suspend; |
b887d2e6 DB |
504 | if (mesg.event == PM_EVENT_PRETHAW) |
505 | mesg.event = PM_EVENT_FREEZE; | |
506 | rqpm.pm_state = mesg.event; | |
1da177e4 | 507 | |
5b114715 FT |
508 | ret = blk_execute_rq(drive->queue, NULL, rq, 0); |
509 | blk_put_request(rq); | |
5e32132b SL |
510 | /* only call ACPI _PS3 after both drivers are suspended */ |
511 | if (!ret && (((drive->dn % 2) && hwif->drives[0].present | |
512 | && hwif->drives[1].present) | |
513 | || !hwif->drives[0].present | |
514 | || !hwif->drives[1].present)) | |
515 | ide_acpi_set_state(hwif, 0); | |
516 | return ret; | |
1da177e4 LT |
517 | } |
518 | ||
519 | static int generic_ide_resume(struct device *dev) | |
520 | { | |
521 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 522 | ide_hwif_t *hwif = HWIF(drive); |
5b114715 | 523 | struct request *rq; |
1da177e4 LT |
524 | struct request_pm_state rqpm; |
525 | ide_task_t args; | |
0d2157f7 | 526 | int err; |
1da177e4 | 527 | |
e3a59b4d | 528 | /* Call ACPI _STM only once */ |
5e32132b SL |
529 | if (!(drive->dn % 2)) { |
530 | ide_acpi_set_state(hwif, 1); | |
e3a59b4d | 531 | ide_acpi_push_timing(hwif); |
5e32132b | 532 | } |
e3a59b4d HR |
533 | |
534 | ide_acpi_exec_tfs(drive); | |
535 | ||
1da177e4 LT |
536 | memset(&rqpm, 0, sizeof(rqpm)); |
537 | memset(&args, 0, sizeof(args)); | |
5b114715 FT |
538 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
539 | rq->cmd_type = REQ_TYPE_PM_RESUME; | |
540 | rq->cmd_flags |= REQ_PREEMPT; | |
541 | rq->special = &args; | |
542 | rq->data = &rqpm; | |
1da177e4 | 543 | rqpm.pm_step = ide_pm_state_start_resume; |
ca078bae | 544 | rqpm.pm_state = PM_EVENT_ON; |
1da177e4 | 545 | |
5b114715 FT |
546 | err = blk_execute_rq(drive->queue, NULL, rq, 1); |
547 | blk_put_request(rq); | |
0d2157f7 | 548 | |
ce9b2b0a RW |
549 | if (err == 0 && dev->driver) { |
550 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
551 | ||
552 | if (drv->resume) | |
553 | drv->resume(drive); | |
554 | } | |
0d2157f7 LT |
555 | |
556 | return err; | |
1da177e4 LT |
557 | } |
558 | ||
559 | int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, | |
560 | unsigned int cmd, unsigned long arg) | |
561 | { | |
1497943e | 562 | unsigned long flags; |
1da177e4 | 563 | ide_driver_t *drv; |
1da177e4 | 564 | void __user *p = (void __user *)arg; |
1985026d | 565 | int err = 0, (*setfunc)(ide_drive_t *, int); |
1497943e | 566 | u8 *val; |
1da177e4 | 567 | |
1497943e BZ |
568 | switch (cmd) { |
569 | case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val; | |
570 | case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val; | |
571 | case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val; | |
572 | case HDIO_GET_DMA: val = &drive->using_dma; goto read_val; | |
573 | case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val; | |
574 | case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val; | |
575 | case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val; | |
576 | case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val; | |
577 | case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val; | |
1da177e4 | 578 | } |
1da177e4 LT |
579 | |
580 | switch (cmd) { | |
1da177e4 LT |
581 | case HDIO_OBSOLETE_IDENTITY: |
582 | case HDIO_GET_IDENTITY: | |
583 | if (bdev != bdev->bd_contains) | |
584 | return -EINVAL; | |
585 | if (drive->id_read == 0) | |
586 | return -ENOMSG; | |
587 | if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142)) | |
588 | return -EFAULT; | |
589 | return 0; | |
590 | ||
591 | case HDIO_GET_NICE: | |
592 | return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP | | |
593 | drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP | | |
92b83c8f | 594 | drive->nice1 << IDE_NICE_1, |
1da177e4 | 595 | (long __user *) arg); |
1da177e4 LT |
596 | #ifdef CONFIG_IDE_TASK_IOCTL |
597 | case HDIO_DRIVE_TASKFILE: | |
598 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
599 | return -EACCES; | |
600 | switch(drive->media) { | |
601 | case ide_disk: | |
602 | return ide_taskfile_ioctl(drive, cmd, arg); | |
603 | default: | |
604 | return -ENOMSG; | |
605 | } | |
606 | #endif /* CONFIG_IDE_TASK_IOCTL */ | |
607 | ||
608 | case HDIO_DRIVE_CMD: | |
609 | if (!capable(CAP_SYS_RAWIO)) | |
610 | return -EACCES; | |
611 | return ide_cmd_ioctl(drive, cmd, arg); | |
612 | ||
613 | case HDIO_DRIVE_TASK: | |
614 | if (!capable(CAP_SYS_RAWIO)) | |
615 | return -EACCES; | |
616 | return ide_task_ioctl(drive, cmd, arg); | |
1da177e4 LT |
617 | case HDIO_SET_NICE: |
618 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; | |
619 | if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1)))) | |
620 | return -EPERM; | |
621 | drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1; | |
622 | drv = *(ide_driver_t **)bdev->bd_disk->private_data; | |
623 | if (drive->dsc_overlap && !drv->supports_dsc_overlap) { | |
624 | drive->dsc_overlap = 0; | |
625 | return -EPERM; | |
626 | } | |
627 | drive->nice1 = (arg >> IDE_NICE_1) & 1; | |
628 | return 0; | |
629 | case HDIO_DRIVE_RESET: | |
dbecebca BZ |
630 | if (!capable(CAP_SYS_ADMIN)) |
631 | return -EACCES; | |
632 | ||
1da177e4 LT |
633 | /* |
634 | * Abort the current command on the | |
635 | * group if there is one, taking | |
636 | * care not to allow anything else | |
637 | * to be queued and to die on the | |
638 | * spot if we miss one somehow | |
639 | */ | |
640 | ||
641 | spin_lock_irqsave(&ide_lock, flags); | |
642 | ||
913759ac AC |
643 | if (HWGROUP(drive)->resetting) { |
644 | spin_unlock_irqrestore(&ide_lock, flags); | |
645 | return -EBUSY; | |
646 | } | |
647 | ||
1da177e4 LT |
648 | ide_abort(drive, "drive reset"); |
649 | ||
125e1874 | 650 | BUG_ON(HWGROUP(drive)->handler); |
dbecebca | 651 | |
1da177e4 LT |
652 | /* Ensure nothing gets queued after we |
653 | drop the lock. Reset will clear the busy */ | |
dbecebca | 654 | |
1da177e4 LT |
655 | HWGROUP(drive)->busy = 1; |
656 | spin_unlock_irqrestore(&ide_lock, flags); | |
657 | (void) ide_do_reset(drive); | |
658 | ||
659 | return 0; | |
1da177e4 LT |
660 | case HDIO_GET_BUSSTATE: |
661 | if (!capable(CAP_SYS_ADMIN)) | |
662 | return -EACCES; | |
663 | if (put_user(HWIF(drive)->bus_state, (long __user *)arg)) | |
664 | return -EFAULT; | |
665 | return 0; | |
666 | ||
667 | case HDIO_SET_BUSSTATE: | |
668 | if (!capable(CAP_SYS_ADMIN)) | |
669 | return -EACCES; | |
1da177e4 LT |
670 | return -EOPNOTSUPP; |
671 | default: | |
672 | return -EINVAL; | |
673 | } | |
1497943e BZ |
674 | |
675 | read_val: | |
f9383c42 | 676 | mutex_lock(&ide_setting_mtx); |
1497943e BZ |
677 | spin_lock_irqsave(&ide_lock, flags); |
678 | err = *val; | |
679 | spin_unlock_irqrestore(&ide_lock, flags); | |
f9383c42 | 680 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
681 | return err >= 0 ? put_user(err, (long __user *)arg) : err; |
682 | ||
683 | set_val: | |
684 | if (bdev != bdev->bd_contains) | |
685 | err = -EINVAL; | |
686 | else { | |
687 | if (!capable(CAP_SYS_ADMIN)) | |
688 | err = -EACCES; | |
689 | else { | |
f9383c42 | 690 | mutex_lock(&ide_setting_mtx); |
1497943e | 691 | err = setfunc(drive, arg); |
f9383c42 | 692 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
693 | } |
694 | } | |
695 | return err; | |
1da177e4 LT |
696 | } |
697 | ||
698 | EXPORT_SYMBOL(generic_ide_ioctl); | |
699 | ||
8604affd BZ |
700 | static int ide_bus_match(struct device *dev, struct device_driver *drv) |
701 | { | |
702 | return 1; | |
703 | } | |
704 | ||
263756ec KS |
705 | static char *media_string(ide_drive_t *drive) |
706 | { | |
707 | switch (drive->media) { | |
708 | case ide_disk: | |
709 | return "disk"; | |
710 | case ide_cdrom: | |
711 | return "cdrom"; | |
712 | case ide_tape: | |
713 | return "tape"; | |
714 | case ide_floppy: | |
715 | return "floppy"; | |
a7a832de DK |
716 | case ide_optical: |
717 | return "optical"; | |
263756ec KS |
718 | default: |
719 | return "UNKNOWN"; | |
720 | } | |
721 | } | |
722 | ||
723 | static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf) | |
724 | { | |
725 | ide_drive_t *drive = to_ide_device(dev); | |
726 | return sprintf(buf, "%s\n", media_string(drive)); | |
727 | } | |
728 | ||
729 | static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf) | |
730 | { | |
731 | ide_drive_t *drive = to_ide_device(dev); | |
732 | return sprintf(buf, "%s\n", drive->name); | |
733 | } | |
734 | ||
735 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) | |
736 | { | |
737 | ide_drive_t *drive = to_ide_device(dev); | |
738 | return sprintf(buf, "ide:m-%s\n", media_string(drive)); | |
739 | } | |
740 | ||
e11b9035 BZ |
741 | static ssize_t model_show(struct device *dev, struct device_attribute *attr, |
742 | char *buf) | |
743 | { | |
744 | ide_drive_t *drive = to_ide_device(dev); | |
745 | return sprintf(buf, "%s\n", drive->id->model); | |
746 | } | |
747 | ||
748 | static ssize_t firmware_show(struct device *dev, struct device_attribute *attr, | |
749 | char *buf) | |
750 | { | |
751 | ide_drive_t *drive = to_ide_device(dev); | |
752 | return sprintf(buf, "%s\n", drive->id->fw_rev); | |
753 | } | |
754 | ||
755 | static ssize_t serial_show(struct device *dev, struct device_attribute *attr, | |
756 | char *buf) | |
757 | { | |
758 | ide_drive_t *drive = to_ide_device(dev); | |
759 | return sprintf(buf, "%s\n", drive->id->serial_no); | |
760 | } | |
761 | ||
263756ec KS |
762 | static struct device_attribute ide_dev_attrs[] = { |
763 | __ATTR_RO(media), | |
764 | __ATTR_RO(drivename), | |
765 | __ATTR_RO(modalias), | |
e11b9035 BZ |
766 | __ATTR_RO(model), |
767 | __ATTR_RO(firmware), | |
768 | __ATTR(serial, 0400, serial_show, NULL), | |
263756ec KS |
769 | __ATTR_NULL |
770 | }; | |
771 | ||
7eff2e7a | 772 | static int ide_uevent(struct device *dev, struct kobj_uevent_env *env) |
263756ec KS |
773 | { |
774 | ide_drive_t *drive = to_ide_device(dev); | |
7eff2e7a KS |
775 | |
776 | add_uevent_var(env, "MEDIA=%s", media_string(drive)); | |
777 | add_uevent_var(env, "DRIVENAME=%s", drive->name); | |
778 | add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive)); | |
263756ec KS |
779 | return 0; |
780 | } | |
781 | ||
4031bbe4 RK |
782 | static int generic_ide_probe(struct device *dev) |
783 | { | |
784 | ide_drive_t *drive = to_ide_device(dev); | |
785 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
786 | ||
787 | return drv->probe ? drv->probe(drive) : -ENODEV; | |
788 | } | |
789 | ||
790 | static int generic_ide_remove(struct device *dev) | |
791 | { | |
792 | ide_drive_t *drive = to_ide_device(dev); | |
793 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
794 | ||
795 | if (drv->remove) | |
796 | drv->remove(drive); | |
797 | ||
798 | return 0; | |
799 | } | |
800 | ||
801 | static void generic_ide_shutdown(struct device *dev) | |
802 | { | |
803 | ide_drive_t *drive = to_ide_device(dev); | |
804 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
805 | ||
806 | if (dev->driver && drv->shutdown) | |
807 | drv->shutdown(drive); | |
808 | } | |
809 | ||
1da177e4 LT |
810 | struct bus_type ide_bus_type = { |
811 | .name = "ide", | |
8604affd | 812 | .match = ide_bus_match, |
263756ec | 813 | .uevent = ide_uevent, |
4031bbe4 RK |
814 | .probe = generic_ide_probe, |
815 | .remove = generic_ide_remove, | |
816 | .shutdown = generic_ide_shutdown, | |
263756ec | 817 | .dev_attrs = ide_dev_attrs, |
1da177e4 LT |
818 | .suspend = generic_ide_suspend, |
819 | .resume = generic_ide_resume, | |
820 | }; | |
821 | ||
8604affd BZ |
822 | EXPORT_SYMBOL_GPL(ide_bus_type); |
823 | ||
ebae41a5 BZ |
824 | int ide_vlb_clk; |
825 | EXPORT_SYMBOL_GPL(ide_vlb_clk); | |
826 | ||
827 | module_param_named(vlb_clock, ide_vlb_clk, int, 0); | |
828 | MODULE_PARM_DESC(vlb_clock, "VLB clock frequency (in MHz)"); | |
829 | ||
830 | int ide_pci_clk; | |
831 | EXPORT_SYMBOL_GPL(ide_pci_clk); | |
832 | ||
833 | module_param_named(pci_clock, ide_pci_clk, int, 0); | |
834 | MODULE_PARM_DESC(pci_clock, "PCI bus clock frequency (in MHz)"); | |
835 | ||
6e87543a BZ |
836 | static int ide_set_dev_param_mask(const char *s, struct kernel_param *kp) |
837 | { | |
838 | int a, b, i, j = 1; | |
839 | unsigned int *dev_param_mask = (unsigned int *)kp->arg; | |
840 | ||
841 | if (sscanf(s, "%d.%d:%d", &a, &b, &j) != 3 && | |
842 | sscanf(s, "%d.%d", &a, &b) != 2) | |
843 | return -EINVAL; | |
844 | ||
845 | i = a * MAX_DRIVES + b; | |
846 | ||
847 | if (i >= MAX_HWIFS * MAX_DRIVES || j < 0 || j > 1) | |
848 | return -EINVAL; | |
849 | ||
850 | if (j) | |
851 | *dev_param_mask |= (1 << i); | |
852 | else | |
853 | *dev_param_mask &= (1 << i); | |
854 | ||
855 | return 0; | |
856 | } | |
857 | ||
858 | static unsigned int ide_nodma; | |
859 | ||
860 | module_param_call(nodma, ide_set_dev_param_mask, NULL, &ide_nodma, 0); | |
861 | MODULE_PARM_DESC(nodma, "disallow DMA for a device"); | |
862 | ||
863 | static unsigned int ide_noflush; | |
864 | ||
865 | module_param_call(noflush, ide_set_dev_param_mask, NULL, &ide_noflush, 0); | |
866 | MODULE_PARM_DESC(noflush, "disable flush requests for a device"); | |
867 | ||
868 | static unsigned int ide_noprobe; | |
869 | ||
870 | module_param_call(noprobe, ide_set_dev_param_mask, NULL, &ide_noprobe, 0); | |
871 | MODULE_PARM_DESC(noprobe, "skip probing for a device"); | |
872 | ||
873 | static unsigned int ide_nowerr; | |
874 | ||
875 | module_param_call(nowerr, ide_set_dev_param_mask, NULL, &ide_nowerr, 0); | |
876 | MODULE_PARM_DESC(nowerr, "ignore the WRERR_STAT bit for a device"); | |
877 | ||
4706a7e0 BZ |
878 | static unsigned int ide_cdroms; |
879 | ||
880 | module_param_call(cdrom, ide_set_dev_param_mask, NULL, &ide_cdroms, 0); | |
881 | MODULE_PARM_DESC(cdrom, "force device as a CD-ROM"); | |
882 | ||
883 | struct chs_geom { | |
884 | unsigned int cyl; | |
885 | u8 head; | |
886 | u8 sect; | |
887 | }; | |
888 | ||
889 | static unsigned int ide_disks; | |
890 | static struct chs_geom ide_disks_chs[MAX_HWIFS * MAX_DRIVES]; | |
891 | ||
892 | static int ide_set_disk_chs(const char *str, struct kernel_param *kp) | |
893 | { | |
894 | int a, b, c = 0, h = 0, s = 0, i, j = 1; | |
895 | ||
896 | if (sscanf(str, "%d.%d:%d,%d,%d", &a, &b, &c, &h, &s) != 5 && | |
897 | sscanf(str, "%d.%d:%d", &a, &b, &j) != 3) | |
898 | return -EINVAL; | |
899 | ||
900 | i = a * MAX_DRIVES + b; | |
901 | ||
902 | if (i >= MAX_HWIFS * MAX_DRIVES || j < 0 || j > 1) | |
903 | return -EINVAL; | |
904 | ||
905 | if (c > INT_MAX || h > 255 || s > 255) | |
906 | return -EINVAL; | |
907 | ||
908 | if (j) | |
909 | ide_disks |= (1 << i); | |
910 | else | |
911 | ide_disks &= (1 << i); | |
912 | ||
913 | ide_disks_chs[i].cyl = c; | |
914 | ide_disks_chs[i].head = h; | |
915 | ide_disks_chs[i].sect = s; | |
916 | ||
917 | return 0; | |
918 | } | |
919 | ||
920 | module_param_call(chs, ide_set_disk_chs, NULL, NULL, 0); | |
921 | MODULE_PARM_DESC(chs, "force device as a disk (using CHS)"); | |
922 | ||
6e87543a BZ |
923 | static void ide_dev_apply_params(ide_drive_t *drive) |
924 | { | |
925 | int i = drive->hwif->index * MAX_DRIVES + drive->select.b.unit; | |
926 | ||
927 | if (ide_nodma & (1 << i)) { | |
928 | printk(KERN_INFO "ide: disallowing DMA for %s\n", drive->name); | |
929 | drive->nodma = 1; | |
930 | } | |
931 | if (ide_noflush & (1 << i)) { | |
932 | printk(KERN_INFO "ide: disabling flush requests for %s\n", | |
933 | drive->name); | |
934 | drive->noflush = 1; | |
935 | } | |
936 | if (ide_noprobe & (1 << i)) { | |
937 | printk(KERN_INFO "ide: skipping probe for %s\n", drive->name); | |
938 | drive->noprobe = 1; | |
939 | } | |
940 | if (ide_nowerr & (1 << i)) { | |
941 | printk(KERN_INFO "ide: ignoring the WRERR_STAT bit for %s\n", | |
942 | drive->name); | |
943 | drive->bad_wstat = BAD_R_STAT; | |
944 | } | |
4706a7e0 BZ |
945 | if (ide_cdroms & (1 << i)) { |
946 | printk(KERN_INFO "ide: forcing %s as a CD-ROM\n", drive->name); | |
947 | drive->present = 1; | |
948 | drive->media = ide_cdrom; | |
949 | /* an ATAPI device ignores DRDY */ | |
950 | drive->ready_stat = 0; | |
951 | } | |
952 | if (ide_disks & (1 << i)) { | |
953 | drive->cyl = drive->bios_cyl = ide_disks_chs[i].cyl; | |
954 | drive->head = drive->bios_head = ide_disks_chs[i].head; | |
955 | drive->sect = drive->bios_sect = ide_disks_chs[i].sect; | |
956 | drive->forced_geom = 1; | |
957 | printk(KERN_INFO "ide: forcing %s as a disk (%d/%d/%d)\n", | |
958 | drive->name, | |
959 | drive->cyl, drive->head, drive->sect); | |
960 | drive->present = 1; | |
961 | drive->media = ide_disk; | |
962 | drive->ready_stat = READY_STAT; | |
963 | } | |
6e87543a BZ |
964 | } |
965 | ||
9fd91d95 BZ |
966 | static unsigned int ide_ignore_cable; |
967 | ||
968 | static int ide_set_ignore_cable(const char *s, struct kernel_param *kp) | |
969 | { | |
970 | int i, j = 1; | |
971 | ||
972 | if (sscanf(s, "%d:%d", &i, &j) != 2 && sscanf(s, "%d", &i) != 1) | |
973 | return -EINVAL; | |
974 | ||
975 | if (i >= MAX_HWIFS || j < 0 || j > 1) | |
976 | return -EINVAL; | |
977 | ||
978 | if (j) | |
979 | ide_ignore_cable |= (1 << i); | |
980 | else | |
981 | ide_ignore_cable &= (1 << i); | |
982 | ||
983 | return 0; | |
984 | } | |
985 | ||
986 | module_param_call(ignore_cable, ide_set_ignore_cable, NULL, NULL, 0); | |
987 | MODULE_PARM_DESC(ignore_cable, "ignore cable detection"); | |
988 | ||
989 | void ide_port_apply_params(ide_hwif_t *hwif) | |
990 | { | |
6e87543a BZ |
991 | int i; |
992 | ||
9fd91d95 BZ |
993 | if (ide_ignore_cable & (1 << hwif->index)) { |
994 | printk(KERN_INFO "ide: ignoring cable detection for %s\n", | |
995 | hwif->name); | |
996 | hwif->cbl = ATA_CBL_PATA40_SHORT; | |
997 | } | |
6e87543a BZ |
998 | |
999 | for (i = 0; i < MAX_DRIVES; i++) | |
1000 | ide_dev_apply_params(&hwif->drives[i]); | |
9fd91d95 BZ |
1001 | } |
1002 | ||
1da177e4 LT |
1003 | /* |
1004 | * This is gets invoked once during initialization, to set *everything* up | |
1005 | */ | |
1006 | static int __init ide_init(void) | |
1007 | { | |
349ae23f RD |
1008 | int ret; |
1009 | ||
eba8ff94 | 1010 | printk(KERN_INFO "Uniform Multi-Platform E-IDE driver\n"); |
537f06c5 | 1011 | |
349ae23f RD |
1012 | ret = bus_register(&ide_bus_type); |
1013 | if (ret < 0) { | |
1014 | printk(KERN_WARNING "IDE: bus_register error: %d\n", ret); | |
1015 | return ret; | |
1016 | } | |
1da177e4 | 1017 | |
f74c9141 BZ |
1018 | ide_port_class = class_create(THIS_MODULE, "ide_port"); |
1019 | if (IS_ERR(ide_port_class)) { | |
1020 | ret = PTR_ERR(ide_port_class); | |
1021 | goto out_port_class; | |
1022 | } | |
f74c9141 | 1023 | |
1da177e4 LT |
1024 | init_ide_data(); |
1025 | ||
5cbf79cd | 1026 | proc_ide_create(); |
1da177e4 | 1027 | |
1da177e4 | 1028 | return 0; |
f74c9141 BZ |
1029 | |
1030 | out_port_class: | |
1031 | bus_unregister(&ide_bus_type); | |
1032 | ||
1033 | return ret; | |
1da177e4 LT |
1034 | } |
1035 | ||
931ee0dc | 1036 | static void __exit ide_exit(void) |
1da177e4 | 1037 | { |
1da177e4 | 1038 | proc_ide_destroy(); |
1da177e4 | 1039 | |
f74c9141 BZ |
1040 | class_destroy(ide_port_class); |
1041 | ||
1da177e4 LT |
1042 | bus_unregister(&ide_bus_type); |
1043 | } | |
1044 | ||
1da177e4 | 1045 | module_init(ide_init); |
931ee0dc | 1046 | module_exit(ide_exit); |
1da177e4 | 1047 | |
931ee0dc | 1048 | MODULE_LICENSE("GPL"); |