Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
59bca8cc | 2 | * Copyright (C) 1994-1998 Linus Torvalds & authors (see below) |
fc410698 | 3 | * Copyright (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 | #include <linux/module.h> |
48 | #include <linux/types.h> | |
49 | #include <linux/string.h> | |
50 | #include <linux/kernel.h> | |
1da177e4 LT |
51 | #include <linux/interrupt.h> |
52 | #include <linux/major.h> | |
53 | #include <linux/errno.h> | |
54 | #include <linux/genhd.h> | |
1da177e4 LT |
55 | #include <linux/slab.h> |
56 | #include <linux/init.h> | |
57 | #include <linux/pci.h> | |
1da177e4 | 58 | #include <linux/ide.h> |
1da177e4 | 59 | #include <linux/completion.h> |
1da177e4 | 60 | #include <linux/device.h> |
1da177e4 LT |
61 | |
62 | ||
63 | /* default maximum number of failures */ | |
64 | #define IDE_DEFAULT_MAX_FAILURES 1 | |
65 | ||
f74c9141 BZ |
66 | struct class *ide_port_class; |
67 | ||
1da177e4 LT |
68 | static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR, |
69 | IDE2_MAJOR, IDE3_MAJOR, | |
70 | IDE4_MAJOR, IDE5_MAJOR, | |
71 | IDE6_MAJOR, IDE7_MAJOR, | |
72 | IDE8_MAJOR, IDE9_MAJOR }; | |
73 | ||
ef29888e | 74 | DEFINE_MUTEX(ide_cfg_mtx); |
1da177e4 | 75 | |
931ee0dc BZ |
76 | __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock); |
77 | EXPORT_SYMBOL(ide_lock); | |
1da177e4 | 78 | |
43514ed1 BZ |
79 | static void ide_port_init_devices_data(ide_hwif_t *); |
80 | ||
1da177e4 LT |
81 | /* |
82 | * Do not even *think* about calling this! | |
83 | */ | |
cbb010c1 | 84 | void ide_init_port_data(ide_hwif_t *hwif, unsigned int index) |
1da177e4 | 85 | { |
1da177e4 LT |
86 | /* bulk initialize hwif & drive info with zeros */ |
87 | memset(hwif, 0, sizeof(ide_hwif_t)); | |
88 | ||
89 | /* fill in any non-zero initial values */ | |
90 | hwif->index = index; | |
91 | hwif->major = ide_hwif_to_major[index]; | |
92 | ||
93 | hwif->name[0] = 'i'; | |
94 | hwif->name[1] = 'd'; | |
95 | hwif->name[2] = 'e'; | |
96 | hwif->name[3] = '0' + index; | |
97 | ||
98 | hwif->bus_state = BUSSTATE_ON; | |
99 | ||
f36d4024 | 100 | init_completion(&hwif->gendev_rel_comp); |
1da177e4 | 101 | |
374e042c | 102 | hwif->tp_ops = &default_tp_ops; |
43514ed1 BZ |
103 | |
104 | ide_port_init_devices_data(hwif); | |
105 | } | |
43514ed1 BZ |
106 | |
107 | static void ide_port_init_devices_data(ide_hwif_t *hwif) | |
108 | { | |
109 | int unit; | |
110 | ||
1da177e4 LT |
111 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
112 | ide_drive_t *drive = &hwif->drives[unit]; | |
43514ed1 BZ |
113 | u8 j = (hwif->index * MAX_DRIVES) + unit; |
114 | ||
115 | memset(drive, 0, sizeof(*drive)); | |
1da177e4 LT |
116 | |
117 | drive->media = ide_disk; | |
118 | drive->select.all = (unit<<4)|0xa0; | |
119 | drive->hwif = hwif; | |
3a7d2484 | 120 | drive->ready_stat = ATA_DRDY; |
1da177e4 LT |
121 | drive->bad_wstat = BAD_W_STAT; |
122 | drive->special.b.recalibrate = 1; | |
123 | drive->special.b.set_geometry = 1; | |
124 | drive->name[0] = 'h'; | |
125 | drive->name[1] = 'd'; | |
43514ed1 | 126 | drive->name[2] = 'a' + j; |
1da177e4 | 127 | drive->max_failures = IDE_DEFAULT_MAX_FAILURES; |
43514ed1 | 128 | |
1da177e4 | 129 | INIT_LIST_HEAD(&drive->list); |
f36d4024 | 130 | init_completion(&drive->gendev_rel_comp); |
1da177e4 LT |
131 | } |
132 | } | |
43514ed1 | 133 | |
71bf9f6f | 134 | /* Called with ide_lock held. */ |
2dde7861 | 135 | static void __ide_port_unregister_devices(ide_hwif_t *hwif) |
71bf9f6f BZ |
136 | { |
137 | int i; | |
138 | ||
139 | for (i = 0; i < MAX_DRIVES; i++) { | |
140 | ide_drive_t *drive = &hwif->drives[i]; | |
141 | ||
142 | if (drive->present) { | |
143 | spin_unlock_irq(&ide_lock); | |
144 | device_unregister(&drive->gendev); | |
145 | wait_for_completion(&drive->gendev_rel_comp); | |
146 | spin_lock_irq(&ide_lock); | |
147 | } | |
148 | } | |
149 | } | |
150 | ||
2dde7861 BZ |
151 | void ide_port_unregister_devices(ide_hwif_t *hwif) |
152 | { | |
153 | mutex_lock(&ide_cfg_mtx); | |
154 | spin_lock_irq(&ide_lock); | |
155 | __ide_port_unregister_devices(hwif); | |
156 | hwif->present = 0; | |
157 | ide_port_init_devices_data(hwif); | |
158 | spin_unlock_irq(&ide_lock); | |
159 | mutex_unlock(&ide_cfg_mtx); | |
160 | } | |
161 | EXPORT_SYMBOL_GPL(ide_port_unregister_devices); | |
162 | ||
1da177e4 | 163 | /** |
020e322d | 164 | * ide_unregister - free an IDE interface |
387750c3 | 165 | * @hwif: IDE interface |
1da177e4 LT |
166 | * |
167 | * Perform the final unregister of an IDE interface. At the moment | |
168 | * we don't refcount interfaces so this will also get split up. | |
169 | * | |
170 | * Locking: | |
171 | * The caller must not hold the IDE locks | |
172 | * The drive present/vanishing is not yet properly locked | |
173 | * Take care with the callbacks. These have been split to avoid | |
174 | * deadlocking the IDE layer. The shutdown callback is called | |
175 | * before we take the lock and free resources. It is up to the | |
176 | * caller to be sure there is no pending I/O here, and that | |
020e322d SS |
177 | * the interface will not be reopened (present/vanishing locking |
178 | * isn't yet done BTW). After we commit to the final kill we | |
1da177e4 LT |
179 | * call the cleanup callback with the ide locks held. |
180 | * | |
181 | * Unregister restores the hwif structures to the default state. | |
182 | * This is raving bonkers. | |
183 | */ | |
184 | ||
387750c3 | 185 | void ide_unregister(ide_hwif_t *hwif) |
1da177e4 | 186 | { |
387750c3 | 187 | ide_hwif_t *g; |
1da177e4 | 188 | ide_hwgroup_t *hwgroup; |
71bf9f6f | 189 | int irq_count = 0; |
1da177e4 | 190 | |
1da177e4 LT |
191 | BUG_ON(in_interrupt()); |
192 | BUG_ON(irqs_disabled()); | |
bd8a59e2 | 193 | |
ef29888e | 194 | mutex_lock(&ide_cfg_mtx); |
1da177e4 | 195 | |
bd8a59e2 BZ |
196 | spin_lock_irq(&ide_lock); |
197 | if (hwif->present) { | |
198 | __ide_port_unregister_devices(hwif); | |
199 | hwif->present = 0; | |
200 | } | |
1da177e4 LT |
201 | spin_unlock_irq(&ide_lock); |
202 | ||
5cbf79cd | 203 | ide_proc_unregister_port(hwif); |
1da177e4 LT |
204 | |
205 | hwgroup = hwif->hwgroup; | |
206 | /* | |
207 | * free the irq if we were the only hwif using it | |
208 | */ | |
209 | g = hwgroup->hwif; | |
210 | do { | |
211 | if (g->irq == hwif->irq) | |
212 | ++irq_count; | |
213 | g = g->next; | |
214 | } while (g != hwgroup->hwif); | |
215 | if (irq_count == 1) | |
216 | free_irq(hwif->irq, hwgroup); | |
217 | ||
96e5ad30 | 218 | ide_remove_port_from_hwgroup(hwif); |
1da177e4 | 219 | |
f74c9141 | 220 | device_unregister(hwif->portdev); |
1da177e4 | 221 | device_unregister(&hwif->gendev); |
f36d4024 | 222 | wait_for_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
223 | |
224 | /* | |
225 | * Remove us from the kernel's knowledge | |
226 | */ | |
227 | blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); | |
228 | kfree(hwif->sg_table); | |
229 | unregister_blkdev(hwif->major, hwif->name); | |
1da177e4 | 230 | |
93de00fd | 231 | if (hwif->dma_base) |
0d1bad21 | 232 | ide_release_dma_engine(hwif); |
1da177e4 | 233 | |
ef29888e | 234 | mutex_unlock(&ide_cfg_mtx); |
1da177e4 LT |
235 | } |
236 | ||
57c802e8 BZ |
237 | void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw) |
238 | { | |
4c3032d8 | 239 | memcpy(&hwif->io_ports, &hw->io_ports, sizeof(hwif->io_ports)); |
57c802e8 | 240 | hwif->irq = hw->irq; |
57c802e8 | 241 | hwif->chipset = hw->chipset; |
c56c5648 BZ |
242 | hwif->dev = hw->dev; |
243 | hwif->gendev.parent = hw->parent ? hw->parent : hw->dev; | |
57c802e8 | 244 | hwif->ack_intr = hw->ack_intr; |
d6276b5f | 245 | hwif->config_data = hw->config; |
57c802e8 | 246 | } |
57c802e8 | 247 | |
1da177e4 LT |
248 | /* |
249 | * Locks for IDE setting functionality | |
250 | */ | |
251 | ||
f9383c42 | 252 | DEFINE_MUTEX(ide_setting_mtx); |
1da177e4 | 253 | |
f9383c42 | 254 | EXPORT_SYMBOL_GPL(ide_setting_mtx); |
1497943e | 255 | |
1da177e4 LT |
256 | /** |
257 | * ide_spin_wait_hwgroup - wait for group | |
258 | * @drive: drive in the group | |
259 | * | |
260 | * Wait for an IDE device group to go non busy and then return | |
261 | * holding the ide_lock which guards the hwgroup->busy status | |
262 | * and right to use it. | |
263 | */ | |
264 | ||
265 | int ide_spin_wait_hwgroup (ide_drive_t *drive) | |
266 | { | |
267 | ide_hwgroup_t *hwgroup = HWGROUP(drive); | |
268 | unsigned long timeout = jiffies + (3 * HZ); | |
269 | ||
270 | spin_lock_irq(&ide_lock); | |
271 | ||
272 | while (hwgroup->busy) { | |
273 | unsigned long lflags; | |
274 | spin_unlock_irq(&ide_lock); | |
275 | local_irq_set(lflags); | |
276 | if (time_after(jiffies, timeout)) { | |
277 | local_irq_restore(lflags); | |
278 | printk(KERN_ERR "%s: channel busy\n", drive->name); | |
279 | return -EBUSY; | |
280 | } | |
281 | local_irq_restore(lflags); | |
282 | spin_lock_irq(&ide_lock); | |
283 | } | |
284 | return 0; | |
285 | } | |
286 | ||
287 | EXPORT_SYMBOL(ide_spin_wait_hwgroup); | |
288 | ||
7662d046 | 289 | int set_io_32bit(ide_drive_t *drive, int arg) |
1da177e4 | 290 | { |
1497943e BZ |
291 | if (drive->no_io_32bit) |
292 | return -EPERM; | |
293 | ||
294 | if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1)) | |
295 | return -EINVAL; | |
296 | ||
644a9d76 BZ |
297 | if (ide_spin_wait_hwgroup(drive)) |
298 | return -EBUSY; | |
299 | ||
1da177e4 | 300 | drive->io_32bit = arg; |
644a9d76 BZ |
301 | |
302 | spin_unlock_irq(&ide_lock); | |
303 | ||
1da177e4 LT |
304 | return 0; |
305 | } | |
306 | ||
1497943e BZ |
307 | static int set_ksettings(ide_drive_t *drive, int arg) |
308 | { | |
309 | if (arg < 0 || arg > 1) | |
310 | return -EINVAL; | |
311 | ||
312 | if (ide_spin_wait_hwgroup(drive)) | |
313 | return -EBUSY; | |
314 | drive->keep_settings = arg; | |
315 | spin_unlock_irq(&ide_lock); | |
316 | ||
317 | return 0; | |
318 | } | |
319 | ||
7662d046 | 320 | int set_using_dma(ide_drive_t *drive, int arg) |
1da177e4 LT |
321 | { |
322 | #ifdef CONFIG_BLK_DEV_IDEDMA | |
87996204 BZ |
323 | ide_hwif_t *hwif = drive->hwif; |
324 | int err = -EPERM; | |
325 | ||
1497943e BZ |
326 | if (arg < 0 || arg > 1) |
327 | return -EINVAL; | |
328 | ||
48fb2688 | 329 | if (ata_id_has_dma(drive->id) == 0) |
87996204 BZ |
330 | goto out; |
331 | ||
5e37bdc0 | 332 | if (hwif->dma_ops == NULL) |
87996204 BZ |
333 | goto out; |
334 | ||
335 | err = -EBUSY; | |
336 | if (ide_spin_wait_hwgroup(drive)) | |
337 | goto out; | |
338 | /* | |
339 | * set ->busy flag, unlock and let it ride | |
340 | */ | |
341 | hwif->hwgroup->busy = 1; | |
342 | spin_unlock_irq(&ide_lock); | |
343 | ||
344 | err = 0; | |
345 | ||
1da177e4 | 346 | if (arg) { |
23b1bd45 | 347 | if (ide_set_dma(drive)) |
87996204 | 348 | err = -EIO; |
7469aaf6 BZ |
349 | } else |
350 | ide_dma_off(drive); | |
87996204 BZ |
351 | |
352 | /* | |
353 | * lock, clear ->busy flag and unlock before leaving | |
354 | */ | |
355 | spin_lock_irq(&ide_lock); | |
356 | hwif->hwgroup->busy = 0; | |
357 | spin_unlock_irq(&ide_lock); | |
358 | out: | |
359 | return err; | |
1da177e4 | 360 | #else |
1497943e BZ |
361 | if (arg < 0 || arg > 1) |
362 | return -EINVAL; | |
363 | ||
1da177e4 LT |
364 | return -EPERM; |
365 | #endif | |
366 | } | |
367 | ||
7662d046 | 368 | int set_pio_mode(ide_drive_t *drive, int arg) |
1da177e4 | 369 | { |
5b114715 | 370 | struct request *rq; |
784506cb | 371 | ide_hwif_t *hwif = drive->hwif; |
ac95beed | 372 | const struct ide_port_ops *port_ops = hwif->port_ops; |
1da177e4 | 373 | |
1497943e BZ |
374 | if (arg < 0 || arg > 255) |
375 | return -EINVAL; | |
376 | ||
ac95beed | 377 | if (port_ops == NULL || port_ops->set_pio_mode == NULL || |
784506cb | 378 | (hwif->host_flags & IDE_HFLAG_NO_SET_MODE)) |
1da177e4 | 379 | return -ENOSYS; |
26bcb879 | 380 | |
1da177e4 LT |
381 | if (drive->special.b.set_tune) |
382 | return -EBUSY; | |
145b75e9 | 383 | |
5b114715 FT |
384 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
385 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
145b75e9 | 386 | |
1da177e4 LT |
387 | drive->tune_req = (u8) arg; |
388 | drive->special.b.set_tune = 1; | |
5b114715 FT |
389 | |
390 | blk_execute_rq(drive->queue, NULL, rq, 0); | |
391 | blk_put_request(rq); | |
392 | ||
1da177e4 LT |
393 | return 0; |
394 | } | |
395 | ||
1497943e BZ |
396 | static int set_unmaskirq(ide_drive_t *drive, int arg) |
397 | { | |
398 | if (drive->no_unmask) | |
399 | return -EPERM; | |
400 | ||
401 | if (arg < 0 || arg > 1) | |
402 | return -EINVAL; | |
403 | ||
404 | if (ide_spin_wait_hwgroup(drive)) | |
405 | return -EBUSY; | |
406 | drive->unmask = arg; | |
407 | spin_unlock_irq(&ide_lock); | |
408 | ||
409 | return 0; | |
410 | } | |
411 | ||
b887d2e6 | 412 | static int generic_ide_suspend(struct device *dev, pm_message_t mesg) |
1da177e4 LT |
413 | { |
414 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 415 | ide_hwif_t *hwif = HWIF(drive); |
5b114715 | 416 | struct request *rq; |
1da177e4 LT |
417 | struct request_pm_state rqpm; |
418 | ide_task_t args; | |
5e32132b | 419 | int ret; |
1da177e4 | 420 | |
e3a59b4d HR |
421 | /* Call ACPI _GTM only once */ |
422 | if (!(drive->dn % 2)) | |
423 | ide_acpi_get_timing(hwif); | |
424 | ||
1da177e4 LT |
425 | memset(&rqpm, 0, sizeof(rqpm)); |
426 | memset(&args, 0, sizeof(args)); | |
5b114715 FT |
427 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
428 | rq->cmd_type = REQ_TYPE_PM_SUSPEND; | |
429 | rq->special = &args; | |
430 | rq->data = &rqpm; | |
1da177e4 | 431 | rqpm.pm_step = ide_pm_state_start_suspend; |
b887d2e6 DB |
432 | if (mesg.event == PM_EVENT_PRETHAW) |
433 | mesg.event = PM_EVENT_FREEZE; | |
434 | rqpm.pm_state = mesg.event; | |
1da177e4 | 435 | |
5b114715 FT |
436 | ret = blk_execute_rq(drive->queue, NULL, rq, 0); |
437 | blk_put_request(rq); | |
5e32132b SL |
438 | /* only call ACPI _PS3 after both drivers are suspended */ |
439 | if (!ret && (((drive->dn % 2) && hwif->drives[0].present | |
440 | && hwif->drives[1].present) | |
441 | || !hwif->drives[0].present | |
442 | || !hwif->drives[1].present)) | |
443 | ide_acpi_set_state(hwif, 0); | |
444 | return ret; | |
1da177e4 LT |
445 | } |
446 | ||
447 | static int generic_ide_resume(struct device *dev) | |
448 | { | |
449 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 450 | ide_hwif_t *hwif = HWIF(drive); |
5b114715 | 451 | struct request *rq; |
1da177e4 LT |
452 | struct request_pm_state rqpm; |
453 | ide_task_t args; | |
0d2157f7 | 454 | int err; |
1da177e4 | 455 | |
e3a59b4d | 456 | /* Call ACPI _STM only once */ |
5e32132b SL |
457 | if (!(drive->dn % 2)) { |
458 | ide_acpi_set_state(hwif, 1); | |
e3a59b4d | 459 | ide_acpi_push_timing(hwif); |
5e32132b | 460 | } |
e3a59b4d HR |
461 | |
462 | ide_acpi_exec_tfs(drive); | |
463 | ||
1da177e4 LT |
464 | memset(&rqpm, 0, sizeof(rqpm)); |
465 | memset(&args, 0, sizeof(args)); | |
5b114715 FT |
466 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
467 | rq->cmd_type = REQ_TYPE_PM_RESUME; | |
468 | rq->cmd_flags |= REQ_PREEMPT; | |
469 | rq->special = &args; | |
470 | rq->data = &rqpm; | |
1da177e4 | 471 | rqpm.pm_step = ide_pm_state_start_resume; |
ca078bae | 472 | rqpm.pm_state = PM_EVENT_ON; |
1da177e4 | 473 | |
5b114715 FT |
474 | err = blk_execute_rq(drive->queue, NULL, rq, 1); |
475 | blk_put_request(rq); | |
0d2157f7 | 476 | |
ce9b2b0a RW |
477 | if (err == 0 && dev->driver) { |
478 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
479 | ||
480 | if (drv->resume) | |
481 | drv->resume(drive); | |
482 | } | |
0d2157f7 LT |
483 | |
484 | return err; | |
1da177e4 LT |
485 | } |
486 | ||
64a8f00f | 487 | static int generic_drive_reset(ide_drive_t *drive) |
79e36a9f EO |
488 | { |
489 | struct request *rq; | |
64a8f00f | 490 | int ret = 0; |
79e36a9f EO |
491 | |
492 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); | |
493 | rq->cmd_type = REQ_TYPE_SPECIAL; | |
494 | rq->cmd_len = 1; | |
495 | rq->cmd[0] = REQ_DRIVE_RESET; | |
496 | rq->cmd_flags |= REQ_SOFTBARRIER; | |
64a8f00f EO |
497 | if (blk_execute_rq(drive->queue, NULL, rq, 1)) |
498 | ret = rq->errors; | |
79e36a9f | 499 | blk_put_request(rq); |
64a8f00f | 500 | return ret; |
79e36a9f EO |
501 | } |
502 | ||
48fb2688 BZ |
503 | static inline void ide_id_to_hd_driveid(u16 *id) |
504 | { | |
505 | #ifdef __BIG_ENDIAN | |
506 | /* accessed in struct hd_driveid as 8-bit values */ | |
507 | id[ATA_ID_MAX_MULTSECT] = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]); | |
508 | id[ATA_ID_CAPABILITY] = __cpu_to_le16(id[ATA_ID_CAPABILITY]); | |
509 | id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]); | |
510 | id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]); | |
511 | id[ATA_ID_MULTSECT] = __cpu_to_le16(id[ATA_ID_MULTSECT]); | |
512 | ||
513 | /* as 32-bit values */ | |
514 | *(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY); | |
515 | *(u32 *)&id[ATA_ID_SPG] = ata_id_u32(id, ATA_ID_SPG); | |
516 | ||
517 | /* as 64-bit value */ | |
518 | *(u64 *)&id[ATA_ID_LBA_CAPACITY_2] = | |
519 | ata_id_u64(id, ATA_ID_LBA_CAPACITY_2); | |
520 | #endif | |
521 | } | |
522 | ||
523 | static int ide_get_identity_ioctl(ide_drive_t *drive, unsigned int cmd, | |
524 | unsigned long arg) | |
525 | { | |
526 | u16 *id = NULL; | |
527 | int size = (cmd == HDIO_GET_IDENTITY) ? (ATA_ID_WORDS * 2) : 142; | |
528 | int rc = 0; | |
529 | ||
530 | if (drive->id_read == 0) { | |
531 | rc = -ENOMSG; | |
532 | goto out; | |
533 | } | |
534 | ||
535 | id = kmalloc(size, GFP_KERNEL); | |
536 | if (id == NULL) { | |
537 | rc = -ENOMEM; | |
538 | goto out; | |
539 | } | |
540 | ||
541 | memcpy(id, drive->id, size); | |
542 | ide_id_to_hd_driveid(id); | |
543 | ||
544 | if (copy_to_user((void __user *)arg, id, size)) | |
545 | rc = -EFAULT; | |
546 | ||
547 | kfree(id); | |
548 | out: | |
549 | return rc; | |
550 | } | |
551 | ||
1da177e4 LT |
552 | int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, |
553 | unsigned int cmd, unsigned long arg) | |
554 | { | |
1497943e | 555 | unsigned long flags; |
1da177e4 | 556 | ide_driver_t *drv; |
1985026d | 557 | int err = 0, (*setfunc)(ide_drive_t *, int); |
1497943e | 558 | u8 *val; |
1da177e4 | 559 | |
1497943e BZ |
560 | switch (cmd) { |
561 | case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val; | |
562 | case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val; | |
563 | case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val; | |
564 | case HDIO_GET_DMA: val = &drive->using_dma; goto read_val; | |
565 | case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val; | |
566 | case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val; | |
567 | case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val; | |
568 | case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val; | |
569 | case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val; | |
1da177e4 | 570 | } |
1da177e4 LT |
571 | |
572 | switch (cmd) { | |
1da177e4 LT |
573 | case HDIO_OBSOLETE_IDENTITY: |
574 | case HDIO_GET_IDENTITY: | |
575 | if (bdev != bdev->bd_contains) | |
576 | return -EINVAL; | |
48fb2688 | 577 | return ide_get_identity_ioctl(drive, cmd, arg); |
1da177e4 LT |
578 | case HDIO_GET_NICE: |
579 | return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP | | |
580 | drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP | | |
92b83c8f | 581 | drive->nice1 << IDE_NICE_1, |
1da177e4 | 582 | (long __user *) arg); |
1da177e4 LT |
583 | #ifdef CONFIG_IDE_TASK_IOCTL |
584 | case HDIO_DRIVE_TASKFILE: | |
585 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
586 | return -EACCES; | |
587 | switch(drive->media) { | |
588 | case ide_disk: | |
589 | return ide_taskfile_ioctl(drive, cmd, arg); | |
590 | default: | |
591 | return -ENOMSG; | |
592 | } | |
593 | #endif /* CONFIG_IDE_TASK_IOCTL */ | |
594 | ||
595 | case HDIO_DRIVE_CMD: | |
596 | if (!capable(CAP_SYS_RAWIO)) | |
597 | return -EACCES; | |
598 | return ide_cmd_ioctl(drive, cmd, arg); | |
599 | ||
600 | case HDIO_DRIVE_TASK: | |
601 | if (!capable(CAP_SYS_RAWIO)) | |
602 | return -EACCES; | |
603 | return ide_task_ioctl(drive, cmd, arg); | |
1da177e4 LT |
604 | case HDIO_SET_NICE: |
605 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; | |
606 | if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1)))) | |
607 | return -EPERM; | |
608 | drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1; | |
609 | drv = *(ide_driver_t **)bdev->bd_disk->private_data; | |
610 | if (drive->dsc_overlap && !drv->supports_dsc_overlap) { | |
611 | drive->dsc_overlap = 0; | |
612 | return -EPERM; | |
613 | } | |
614 | drive->nice1 = (arg >> IDE_NICE_1) & 1; | |
615 | return 0; | |
616 | case HDIO_DRIVE_RESET: | |
dbecebca BZ |
617 | if (!capable(CAP_SYS_ADMIN)) |
618 | return -EACCES; | |
619 | ||
64a8f00f | 620 | return generic_drive_reset(drive); |
79e36a9f | 621 | |
1da177e4 LT |
622 | case HDIO_GET_BUSSTATE: |
623 | if (!capable(CAP_SYS_ADMIN)) | |
624 | return -EACCES; | |
625 | if (put_user(HWIF(drive)->bus_state, (long __user *)arg)) | |
626 | return -EFAULT; | |
627 | return 0; | |
628 | ||
629 | case HDIO_SET_BUSSTATE: | |
630 | if (!capable(CAP_SYS_ADMIN)) | |
631 | return -EACCES; | |
1da177e4 LT |
632 | return -EOPNOTSUPP; |
633 | default: | |
634 | return -EINVAL; | |
635 | } | |
1497943e BZ |
636 | |
637 | read_val: | |
f9383c42 | 638 | mutex_lock(&ide_setting_mtx); |
1497943e BZ |
639 | spin_lock_irqsave(&ide_lock, flags); |
640 | err = *val; | |
641 | spin_unlock_irqrestore(&ide_lock, flags); | |
f9383c42 | 642 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
643 | return err >= 0 ? put_user(err, (long __user *)arg) : err; |
644 | ||
645 | set_val: | |
646 | if (bdev != bdev->bd_contains) | |
647 | err = -EINVAL; | |
648 | else { | |
649 | if (!capable(CAP_SYS_ADMIN)) | |
650 | err = -EACCES; | |
651 | else { | |
f9383c42 | 652 | mutex_lock(&ide_setting_mtx); |
1497943e | 653 | err = setfunc(drive, arg); |
f9383c42 | 654 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
655 | } |
656 | } | |
657 | return err; | |
1da177e4 LT |
658 | } |
659 | ||
660 | EXPORT_SYMBOL(generic_ide_ioctl); | |
661 | ||
08da591e BZ |
662 | /** |
663 | * ide_device_get - get an additional reference to a ide_drive_t | |
664 | * @drive: device to get a reference to | |
665 | * | |
666 | * Gets a reference to the ide_drive_t and increments the use count of the | |
667 | * underlying LLDD module. | |
668 | */ | |
669 | int ide_device_get(ide_drive_t *drive) | |
670 | { | |
671 | struct device *host_dev; | |
672 | struct module *module; | |
673 | ||
674 | if (!get_device(&drive->gendev)) | |
675 | return -ENXIO; | |
676 | ||
677 | host_dev = drive->hwif->host->dev[0]; | |
678 | module = host_dev ? host_dev->driver->owner : NULL; | |
679 | ||
680 | if (module && !try_module_get(module)) { | |
681 | put_device(&drive->gendev); | |
682 | return -ENXIO; | |
683 | } | |
684 | ||
685 | return 0; | |
686 | } | |
687 | EXPORT_SYMBOL_GPL(ide_device_get); | |
688 | ||
689 | /** | |
690 | * ide_device_put - release a reference to a ide_drive_t | |
691 | * @drive: device to release a reference on | |
692 | * | |
693 | * Release a reference to the ide_drive_t and decrements the use count of | |
694 | * the underlying LLDD module. | |
695 | */ | |
696 | void ide_device_put(ide_drive_t *drive) | |
697 | { | |
698 | #ifdef CONFIG_MODULE_UNLOAD | |
699 | struct device *host_dev = drive->hwif->host->dev[0]; | |
700 | struct module *module = host_dev ? host_dev->driver->owner : NULL; | |
701 | ||
702 | if (module) | |
703 | module_put(module); | |
704 | #endif | |
705 | put_device(&drive->gendev); | |
706 | } | |
707 | EXPORT_SYMBOL_GPL(ide_device_put); | |
708 | ||
8604affd BZ |
709 | static int ide_bus_match(struct device *dev, struct device_driver *drv) |
710 | { | |
711 | return 1; | |
712 | } | |
713 | ||
263756ec KS |
714 | static char *media_string(ide_drive_t *drive) |
715 | { | |
716 | switch (drive->media) { | |
717 | case ide_disk: | |
718 | return "disk"; | |
719 | case ide_cdrom: | |
720 | return "cdrom"; | |
721 | case ide_tape: | |
722 | return "tape"; | |
723 | case ide_floppy: | |
724 | return "floppy"; | |
a7a832de DK |
725 | case ide_optical: |
726 | return "optical"; | |
263756ec KS |
727 | default: |
728 | return "UNKNOWN"; | |
729 | } | |
730 | } | |
731 | ||
732 | static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf) | |
733 | { | |
734 | ide_drive_t *drive = to_ide_device(dev); | |
735 | return sprintf(buf, "%s\n", media_string(drive)); | |
736 | } | |
737 | ||
738 | static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf) | |
739 | { | |
740 | ide_drive_t *drive = to_ide_device(dev); | |
741 | return sprintf(buf, "%s\n", drive->name); | |
742 | } | |
743 | ||
744 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) | |
745 | { | |
746 | ide_drive_t *drive = to_ide_device(dev); | |
747 | return sprintf(buf, "ide:m-%s\n", media_string(drive)); | |
748 | } | |
749 | ||
e11b9035 BZ |
750 | static ssize_t model_show(struct device *dev, struct device_attribute *attr, |
751 | char *buf) | |
752 | { | |
753 | ide_drive_t *drive = to_ide_device(dev); | |
4dde4492 | 754 | return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_PROD]); |
e11b9035 BZ |
755 | } |
756 | ||
757 | static ssize_t firmware_show(struct device *dev, struct device_attribute *attr, | |
758 | char *buf) | |
759 | { | |
760 | ide_drive_t *drive = to_ide_device(dev); | |
4dde4492 | 761 | return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_FW_REV]); |
e11b9035 BZ |
762 | } |
763 | ||
764 | static ssize_t serial_show(struct device *dev, struct device_attribute *attr, | |
765 | char *buf) | |
766 | { | |
767 | ide_drive_t *drive = to_ide_device(dev); | |
4dde4492 | 768 | return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_SERNO]); |
e11b9035 BZ |
769 | } |
770 | ||
263756ec KS |
771 | static struct device_attribute ide_dev_attrs[] = { |
772 | __ATTR_RO(media), | |
773 | __ATTR_RO(drivename), | |
774 | __ATTR_RO(modalias), | |
e11b9035 BZ |
775 | __ATTR_RO(model), |
776 | __ATTR_RO(firmware), | |
777 | __ATTR(serial, 0400, serial_show, NULL), | |
263756ec KS |
778 | __ATTR_NULL |
779 | }; | |
780 | ||
7eff2e7a | 781 | static int ide_uevent(struct device *dev, struct kobj_uevent_env *env) |
263756ec KS |
782 | { |
783 | ide_drive_t *drive = to_ide_device(dev); | |
7eff2e7a KS |
784 | |
785 | add_uevent_var(env, "MEDIA=%s", media_string(drive)); | |
786 | add_uevent_var(env, "DRIVENAME=%s", drive->name); | |
787 | add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive)); | |
263756ec KS |
788 | return 0; |
789 | } | |
790 | ||
4031bbe4 RK |
791 | static int generic_ide_probe(struct device *dev) |
792 | { | |
793 | ide_drive_t *drive = to_ide_device(dev); | |
794 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
795 | ||
796 | return drv->probe ? drv->probe(drive) : -ENODEV; | |
797 | } | |
798 | ||
799 | static int generic_ide_remove(struct device *dev) | |
800 | { | |
801 | ide_drive_t *drive = to_ide_device(dev); | |
802 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
803 | ||
804 | if (drv->remove) | |
805 | drv->remove(drive); | |
806 | ||
807 | return 0; | |
808 | } | |
809 | ||
810 | static void generic_ide_shutdown(struct device *dev) | |
811 | { | |
812 | ide_drive_t *drive = to_ide_device(dev); | |
813 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
814 | ||
815 | if (dev->driver && drv->shutdown) | |
816 | drv->shutdown(drive); | |
817 | } | |
818 | ||
1da177e4 LT |
819 | struct bus_type ide_bus_type = { |
820 | .name = "ide", | |
8604affd | 821 | .match = ide_bus_match, |
263756ec | 822 | .uevent = ide_uevent, |
4031bbe4 RK |
823 | .probe = generic_ide_probe, |
824 | .remove = generic_ide_remove, | |
825 | .shutdown = generic_ide_shutdown, | |
263756ec | 826 | .dev_attrs = ide_dev_attrs, |
1da177e4 LT |
827 | .suspend = generic_ide_suspend, |
828 | .resume = generic_ide_resume, | |
829 | }; | |
830 | ||
8604affd BZ |
831 | EXPORT_SYMBOL_GPL(ide_bus_type); |
832 | ||
ebae41a5 BZ |
833 | int ide_vlb_clk; |
834 | EXPORT_SYMBOL_GPL(ide_vlb_clk); | |
835 | ||
836 | module_param_named(vlb_clock, ide_vlb_clk, int, 0); | |
837 | MODULE_PARM_DESC(vlb_clock, "VLB clock frequency (in MHz)"); | |
838 | ||
839 | int ide_pci_clk; | |
840 | EXPORT_SYMBOL_GPL(ide_pci_clk); | |
841 | ||
842 | module_param_named(pci_clock, ide_pci_clk, int, 0); | |
843 | MODULE_PARM_DESC(pci_clock, "PCI bus clock frequency (in MHz)"); | |
844 | ||
6e87543a BZ |
845 | static int ide_set_dev_param_mask(const char *s, struct kernel_param *kp) |
846 | { | |
847 | int a, b, i, j = 1; | |
848 | unsigned int *dev_param_mask = (unsigned int *)kp->arg; | |
849 | ||
850 | if (sscanf(s, "%d.%d:%d", &a, &b, &j) != 3 && | |
851 | sscanf(s, "%d.%d", &a, &b) != 2) | |
852 | return -EINVAL; | |
853 | ||
854 | i = a * MAX_DRIVES + b; | |
855 | ||
856 | if (i >= MAX_HWIFS * MAX_DRIVES || j < 0 || j > 1) | |
857 | return -EINVAL; | |
858 | ||
859 | if (j) | |
860 | *dev_param_mask |= (1 << i); | |
861 | else | |
862 | *dev_param_mask &= (1 << i); | |
863 | ||
864 | return 0; | |
865 | } | |
866 | ||
867 | static unsigned int ide_nodma; | |
868 | ||
869 | module_param_call(nodma, ide_set_dev_param_mask, NULL, &ide_nodma, 0); | |
870 | MODULE_PARM_DESC(nodma, "disallow DMA for a device"); | |
871 | ||
872 | static unsigned int ide_noflush; | |
873 | ||
874 | module_param_call(noflush, ide_set_dev_param_mask, NULL, &ide_noflush, 0); | |
875 | MODULE_PARM_DESC(noflush, "disable flush requests for a device"); | |
876 | ||
877 | static unsigned int ide_noprobe; | |
878 | ||
879 | module_param_call(noprobe, ide_set_dev_param_mask, NULL, &ide_noprobe, 0); | |
880 | MODULE_PARM_DESC(noprobe, "skip probing for a device"); | |
881 | ||
882 | static unsigned int ide_nowerr; | |
883 | ||
884 | module_param_call(nowerr, ide_set_dev_param_mask, NULL, &ide_nowerr, 0); | |
3a7d2484 | 885 | MODULE_PARM_DESC(nowerr, "ignore the ATA_DF bit for a device"); |
6e87543a | 886 | |
4706a7e0 BZ |
887 | static unsigned int ide_cdroms; |
888 | ||
889 | module_param_call(cdrom, ide_set_dev_param_mask, NULL, &ide_cdroms, 0); | |
890 | MODULE_PARM_DESC(cdrom, "force device as a CD-ROM"); | |
891 | ||
892 | struct chs_geom { | |
893 | unsigned int cyl; | |
894 | u8 head; | |
895 | u8 sect; | |
896 | }; | |
897 | ||
898 | static unsigned int ide_disks; | |
899 | static struct chs_geom ide_disks_chs[MAX_HWIFS * MAX_DRIVES]; | |
900 | ||
901 | static int ide_set_disk_chs(const char *str, struct kernel_param *kp) | |
902 | { | |
903 | int a, b, c = 0, h = 0, s = 0, i, j = 1; | |
904 | ||
905 | if (sscanf(str, "%d.%d:%d,%d,%d", &a, &b, &c, &h, &s) != 5 && | |
906 | sscanf(str, "%d.%d:%d", &a, &b, &j) != 3) | |
907 | return -EINVAL; | |
908 | ||
909 | i = a * MAX_DRIVES + b; | |
910 | ||
911 | if (i >= MAX_HWIFS * MAX_DRIVES || j < 0 || j > 1) | |
912 | return -EINVAL; | |
913 | ||
914 | if (c > INT_MAX || h > 255 || s > 255) | |
915 | return -EINVAL; | |
916 | ||
917 | if (j) | |
918 | ide_disks |= (1 << i); | |
919 | else | |
920 | ide_disks &= (1 << i); | |
921 | ||
922 | ide_disks_chs[i].cyl = c; | |
923 | ide_disks_chs[i].head = h; | |
924 | ide_disks_chs[i].sect = s; | |
925 | ||
926 | return 0; | |
927 | } | |
928 | ||
929 | module_param_call(chs, ide_set_disk_chs, NULL, NULL, 0); | |
930 | MODULE_PARM_DESC(chs, "force device as a disk (using CHS)"); | |
931 | ||
6e87543a BZ |
932 | static void ide_dev_apply_params(ide_drive_t *drive) |
933 | { | |
934 | int i = drive->hwif->index * MAX_DRIVES + drive->select.b.unit; | |
935 | ||
936 | if (ide_nodma & (1 << i)) { | |
937 | printk(KERN_INFO "ide: disallowing DMA for %s\n", drive->name); | |
938 | drive->nodma = 1; | |
939 | } | |
940 | if (ide_noflush & (1 << i)) { | |
941 | printk(KERN_INFO "ide: disabling flush requests for %s\n", | |
942 | drive->name); | |
943 | drive->noflush = 1; | |
944 | } | |
945 | if (ide_noprobe & (1 << i)) { | |
946 | printk(KERN_INFO "ide: skipping probe for %s\n", drive->name); | |
947 | drive->noprobe = 1; | |
948 | } | |
949 | if (ide_nowerr & (1 << i)) { | |
3a7d2484 | 950 | printk(KERN_INFO "ide: ignoring the ATA_DF bit for %s\n", |
6e87543a BZ |
951 | drive->name); |
952 | drive->bad_wstat = BAD_R_STAT; | |
953 | } | |
4706a7e0 BZ |
954 | if (ide_cdroms & (1 << i)) { |
955 | printk(KERN_INFO "ide: forcing %s as a CD-ROM\n", drive->name); | |
956 | drive->present = 1; | |
957 | drive->media = ide_cdrom; | |
958 | /* an ATAPI device ignores DRDY */ | |
959 | drive->ready_stat = 0; | |
960 | } | |
961 | if (ide_disks & (1 << i)) { | |
962 | drive->cyl = drive->bios_cyl = ide_disks_chs[i].cyl; | |
963 | drive->head = drive->bios_head = ide_disks_chs[i].head; | |
964 | drive->sect = drive->bios_sect = ide_disks_chs[i].sect; | |
965 | drive->forced_geom = 1; | |
966 | printk(KERN_INFO "ide: forcing %s as a disk (%d/%d/%d)\n", | |
967 | drive->name, | |
968 | drive->cyl, drive->head, drive->sect); | |
969 | drive->present = 1; | |
970 | drive->media = ide_disk; | |
3a7d2484 | 971 | drive->ready_stat = ATA_DRDY; |
4706a7e0 | 972 | } |
6e87543a BZ |
973 | } |
974 | ||
9fd91d95 BZ |
975 | static unsigned int ide_ignore_cable; |
976 | ||
977 | static int ide_set_ignore_cable(const char *s, struct kernel_param *kp) | |
978 | { | |
979 | int i, j = 1; | |
980 | ||
981 | if (sscanf(s, "%d:%d", &i, &j) != 2 && sscanf(s, "%d", &i) != 1) | |
982 | return -EINVAL; | |
983 | ||
984 | if (i >= MAX_HWIFS || j < 0 || j > 1) | |
985 | return -EINVAL; | |
986 | ||
987 | if (j) | |
988 | ide_ignore_cable |= (1 << i); | |
989 | else | |
990 | ide_ignore_cable &= (1 << i); | |
991 | ||
992 | return 0; | |
993 | } | |
994 | ||
995 | module_param_call(ignore_cable, ide_set_ignore_cable, NULL, NULL, 0); | |
996 | MODULE_PARM_DESC(ignore_cable, "ignore cable detection"); | |
997 | ||
998 | void ide_port_apply_params(ide_hwif_t *hwif) | |
999 | { | |
6e87543a BZ |
1000 | int i; |
1001 | ||
9fd91d95 BZ |
1002 | if (ide_ignore_cable & (1 << hwif->index)) { |
1003 | printk(KERN_INFO "ide: ignoring cable detection for %s\n", | |
1004 | hwif->name); | |
1005 | hwif->cbl = ATA_CBL_PATA40_SHORT; | |
1006 | } | |
6e87543a BZ |
1007 | |
1008 | for (i = 0; i < MAX_DRIVES; i++) | |
1009 | ide_dev_apply_params(&hwif->drives[i]); | |
9fd91d95 BZ |
1010 | } |
1011 | ||
1da177e4 LT |
1012 | /* |
1013 | * This is gets invoked once during initialization, to set *everything* up | |
1014 | */ | |
1015 | static int __init ide_init(void) | |
1016 | { | |
349ae23f RD |
1017 | int ret; |
1018 | ||
eba8ff94 | 1019 | printk(KERN_INFO "Uniform Multi-Platform E-IDE driver\n"); |
537f06c5 | 1020 | |
349ae23f RD |
1021 | ret = bus_register(&ide_bus_type); |
1022 | if (ret < 0) { | |
1023 | printk(KERN_WARNING "IDE: bus_register error: %d\n", ret); | |
1024 | return ret; | |
1025 | } | |
1da177e4 | 1026 | |
f74c9141 BZ |
1027 | ide_port_class = class_create(THIS_MODULE, "ide_port"); |
1028 | if (IS_ERR(ide_port_class)) { | |
1029 | ret = PTR_ERR(ide_port_class); | |
1030 | goto out_port_class; | |
1031 | } | |
f74c9141 | 1032 | |
5cbf79cd | 1033 | proc_ide_create(); |
1da177e4 | 1034 | |
1da177e4 | 1035 | return 0; |
f74c9141 BZ |
1036 | |
1037 | out_port_class: | |
1038 | bus_unregister(&ide_bus_type); | |
1039 | ||
1040 | return ret; | |
1da177e4 LT |
1041 | } |
1042 | ||
931ee0dc | 1043 | static void __exit ide_exit(void) |
1da177e4 | 1044 | { |
1da177e4 | 1045 | proc_ide_destroy(); |
1da177e4 | 1046 | |
f74c9141 BZ |
1047 | class_destroy(ide_port_class); |
1048 | ||
1da177e4 LT |
1049 | bus_unregister(&ide_bus_type); |
1050 | } | |
1051 | ||
1da177e4 | 1052 | module_init(ide_init); |
931ee0dc | 1053 | module_exit(ide_exit); |
1da177e4 | 1054 | |
931ee0dc | 1055 | MODULE_LICENSE("GPL"); |