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 LT |
90 | __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock); |
91 | ||
1da177e4 | 92 | int noautodma = 0; |
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; | |
139 | drive->ctl = 0x08; | |
140 | drive->ready_stat = READY_STAT; | |
141 | drive->bad_wstat = BAD_W_STAT; | |
142 | drive->special.b.recalibrate = 1; | |
143 | drive->special.b.set_geometry = 1; | |
144 | drive->name[0] = 'h'; | |
145 | drive->name[1] = 'd'; | |
43514ed1 | 146 | drive->name[2] = 'a' + j; |
1da177e4 | 147 | drive->max_failures = IDE_DEFAULT_MAX_FAILURES; |
43514ed1 | 148 | |
1da177e4 | 149 | INIT_LIST_HEAD(&drive->list); |
f36d4024 | 150 | init_completion(&drive->gendev_rel_comp); |
1da177e4 LT |
151 | } |
152 | } | |
43514ed1 | 153 | |
1da177e4 LT |
154 | static void __init init_ide_data (void) |
155 | { | |
1da177e4 | 156 | unsigned int index; |
1da177e4 LT |
157 | |
158 | /* Initialise all interface structures */ | |
159 | for (index = 0; index < MAX_HWIFS; ++index) { | |
05734266 BZ |
160 | ide_hwif_t *hwif = &ide_hwifs[index]; |
161 | ||
cbb010c1 | 162 | ide_init_port_data(hwif, index); |
1da177e4 | 163 | } |
1da177e4 LT |
164 | } |
165 | ||
fbd13088 | 166 | void ide_remove_port_from_hwgroup(ide_hwif_t *hwif) |
96e5ad30 BZ |
167 | { |
168 | ide_hwgroup_t *hwgroup = hwif->hwgroup; | |
169 | ||
170 | spin_lock_irq(&ide_lock); | |
171 | /* | |
172 | * Remove us from the hwgroup, and free | |
173 | * the hwgroup if we were the only member | |
174 | */ | |
175 | if (hwif->next == hwif) { | |
176 | BUG_ON(hwgroup->hwif != hwif); | |
177 | kfree(hwgroup); | |
178 | } else { | |
179 | /* There is another interface in hwgroup. | |
180 | * Unlink us, and set hwgroup->drive and ->hwif to | |
181 | * something sane. | |
182 | */ | |
183 | ide_hwif_t *g = hwgroup->hwif; | |
184 | ||
185 | while (g->next != hwif) | |
186 | g = g->next; | |
187 | g->next = hwif->next; | |
188 | if (hwgroup->hwif == hwif) { | |
189 | /* Chose a random hwif for hwgroup->hwif. | |
190 | * It's guaranteed that there are no drives | |
191 | * left in the hwgroup. | |
192 | */ | |
193 | BUG_ON(hwgroup->drive != NULL); | |
194 | hwgroup->hwif = g; | |
195 | } | |
196 | BUG_ON(hwgroup->hwif == hwif); | |
197 | } | |
198 | spin_unlock_irq(&ide_lock); | |
199 | } | |
200 | ||
71bf9f6f | 201 | /* Called with ide_lock held. */ |
2dde7861 | 202 | static void __ide_port_unregister_devices(ide_hwif_t *hwif) |
71bf9f6f BZ |
203 | { |
204 | int i; | |
205 | ||
206 | for (i = 0; i < MAX_DRIVES; i++) { | |
207 | ide_drive_t *drive = &hwif->drives[i]; | |
208 | ||
209 | if (drive->present) { | |
210 | spin_unlock_irq(&ide_lock); | |
211 | device_unregister(&drive->gendev); | |
212 | wait_for_completion(&drive->gendev_rel_comp); | |
213 | spin_lock_irq(&ide_lock); | |
214 | } | |
215 | } | |
216 | } | |
217 | ||
2dde7861 BZ |
218 | void ide_port_unregister_devices(ide_hwif_t *hwif) |
219 | { | |
220 | mutex_lock(&ide_cfg_mtx); | |
221 | spin_lock_irq(&ide_lock); | |
222 | __ide_port_unregister_devices(hwif); | |
223 | hwif->present = 0; | |
224 | ide_port_init_devices_data(hwif); | |
225 | spin_unlock_irq(&ide_lock); | |
226 | mutex_unlock(&ide_cfg_mtx); | |
227 | } | |
228 | EXPORT_SYMBOL_GPL(ide_port_unregister_devices); | |
229 | ||
1da177e4 | 230 | /** |
020e322d | 231 | * ide_unregister - free an IDE interface |
387750c3 | 232 | * @hwif: IDE interface |
1da177e4 LT |
233 | * |
234 | * Perform the final unregister of an IDE interface. At the moment | |
235 | * we don't refcount interfaces so this will also get split up. | |
236 | * | |
237 | * Locking: | |
238 | * The caller must not hold the IDE locks | |
239 | * The drive present/vanishing is not yet properly locked | |
240 | * Take care with the callbacks. These have been split to avoid | |
241 | * deadlocking the IDE layer. The shutdown callback is called | |
242 | * before we take the lock and free resources. It is up to the | |
243 | * caller to be sure there is no pending I/O here, and that | |
020e322d SS |
244 | * the interface will not be reopened (present/vanishing locking |
245 | * isn't yet done BTW). After we commit to the final kill we | |
1da177e4 LT |
246 | * call the cleanup callback with the ide locks held. |
247 | * | |
248 | * Unregister restores the hwif structures to the default state. | |
249 | * This is raving bonkers. | |
250 | */ | |
251 | ||
387750c3 | 252 | void ide_unregister(ide_hwif_t *hwif) |
1da177e4 | 253 | { |
387750c3 | 254 | ide_hwif_t *g; |
1da177e4 | 255 | ide_hwgroup_t *hwgroup; |
71bf9f6f | 256 | int irq_count = 0; |
1da177e4 | 257 | |
1da177e4 LT |
258 | BUG_ON(in_interrupt()); |
259 | BUG_ON(irqs_disabled()); | |
bd8a59e2 | 260 | |
ef29888e | 261 | mutex_lock(&ide_cfg_mtx); |
1da177e4 | 262 | |
bd8a59e2 BZ |
263 | spin_lock_irq(&ide_lock); |
264 | if (hwif->present) { | |
265 | __ide_port_unregister_devices(hwif); | |
266 | hwif->present = 0; | |
267 | } | |
1da177e4 LT |
268 | spin_unlock_irq(&ide_lock); |
269 | ||
5cbf79cd | 270 | ide_proc_unregister_port(hwif); |
1da177e4 LT |
271 | |
272 | hwgroup = hwif->hwgroup; | |
273 | /* | |
274 | * free the irq if we were the only hwif using it | |
275 | */ | |
276 | g = hwgroup->hwif; | |
277 | do { | |
278 | if (g->irq == hwif->irq) | |
279 | ++irq_count; | |
280 | g = g->next; | |
281 | } while (g != hwgroup->hwif); | |
282 | if (irq_count == 1) | |
283 | free_irq(hwif->irq, hwgroup); | |
284 | ||
96e5ad30 | 285 | ide_remove_port_from_hwgroup(hwif); |
1da177e4 | 286 | |
f74c9141 | 287 | device_unregister(hwif->portdev); |
1da177e4 | 288 | device_unregister(&hwif->gendev); |
f36d4024 | 289 | wait_for_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
290 | |
291 | /* | |
292 | * Remove us from the kernel's knowledge | |
293 | */ | |
294 | blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); | |
295 | kfree(hwif->sg_table); | |
296 | unregister_blkdev(hwif->major, hwif->name); | |
1da177e4 | 297 | |
93de00fd | 298 | if (hwif->dma_base) |
0d1bad21 | 299 | ide_release_dma_engine(hwif); |
1da177e4 | 300 | |
2b54ed94 | 301 | spin_lock_irq(&ide_lock); |
1da177e4 | 302 | /* restore hwif data to pristine status */ |
387750c3 | 303 | ide_init_port_data(hwif, hwif->index); |
1da177e4 | 304 | spin_unlock_irq(&ide_lock); |
2b54ed94 | 305 | |
ef29888e | 306 | mutex_unlock(&ide_cfg_mtx); |
1da177e4 LT |
307 | } |
308 | ||
309 | EXPORT_SYMBOL(ide_unregister); | |
310 | ||
57c802e8 BZ |
311 | void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw) |
312 | { | |
4c3032d8 | 313 | memcpy(&hwif->io_ports, &hw->io_ports, sizeof(hwif->io_ports)); |
57c802e8 | 314 | hwif->irq = hw->irq; |
57c802e8 BZ |
315 | hwif->chipset = hw->chipset; |
316 | hwif->gendev.parent = hw->dev; | |
317 | hwif->ack_intr = hw->ack_intr; | |
318 | } | |
319 | EXPORT_SYMBOL_GPL(ide_init_port_hw); | |
320 | ||
1da177e4 LT |
321 | /* |
322 | * Locks for IDE setting functionality | |
323 | */ | |
324 | ||
f9383c42 | 325 | DEFINE_MUTEX(ide_setting_mtx); |
1da177e4 | 326 | |
f9383c42 | 327 | EXPORT_SYMBOL_GPL(ide_setting_mtx); |
1497943e | 328 | |
1da177e4 LT |
329 | /** |
330 | * ide_spin_wait_hwgroup - wait for group | |
331 | * @drive: drive in the group | |
332 | * | |
333 | * Wait for an IDE device group to go non busy and then return | |
334 | * holding the ide_lock which guards the hwgroup->busy status | |
335 | * and right to use it. | |
336 | */ | |
337 | ||
338 | int ide_spin_wait_hwgroup (ide_drive_t *drive) | |
339 | { | |
340 | ide_hwgroup_t *hwgroup = HWGROUP(drive); | |
341 | unsigned long timeout = jiffies + (3 * HZ); | |
342 | ||
343 | spin_lock_irq(&ide_lock); | |
344 | ||
345 | while (hwgroup->busy) { | |
346 | unsigned long lflags; | |
347 | spin_unlock_irq(&ide_lock); | |
348 | local_irq_set(lflags); | |
349 | if (time_after(jiffies, timeout)) { | |
350 | local_irq_restore(lflags); | |
351 | printk(KERN_ERR "%s: channel busy\n", drive->name); | |
352 | return -EBUSY; | |
353 | } | |
354 | local_irq_restore(lflags); | |
355 | spin_lock_irq(&ide_lock); | |
356 | } | |
357 | return 0; | |
358 | } | |
359 | ||
360 | EXPORT_SYMBOL(ide_spin_wait_hwgroup); | |
361 | ||
7662d046 | 362 | int set_io_32bit(ide_drive_t *drive, int arg) |
1da177e4 | 363 | { |
1497943e BZ |
364 | if (drive->no_io_32bit) |
365 | return -EPERM; | |
366 | ||
367 | if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1)) | |
368 | return -EINVAL; | |
369 | ||
644a9d76 BZ |
370 | if (ide_spin_wait_hwgroup(drive)) |
371 | return -EBUSY; | |
372 | ||
1da177e4 | 373 | drive->io_32bit = arg; |
644a9d76 BZ |
374 | |
375 | spin_unlock_irq(&ide_lock); | |
376 | ||
1da177e4 LT |
377 | return 0; |
378 | } | |
379 | ||
1497943e BZ |
380 | static int set_ksettings(ide_drive_t *drive, int arg) |
381 | { | |
382 | if (arg < 0 || arg > 1) | |
383 | return -EINVAL; | |
384 | ||
385 | if (ide_spin_wait_hwgroup(drive)) | |
386 | return -EBUSY; | |
387 | drive->keep_settings = arg; | |
388 | spin_unlock_irq(&ide_lock); | |
389 | ||
390 | return 0; | |
391 | } | |
392 | ||
7662d046 | 393 | int set_using_dma(ide_drive_t *drive, int arg) |
1da177e4 LT |
394 | { |
395 | #ifdef CONFIG_BLK_DEV_IDEDMA | |
87996204 BZ |
396 | ide_hwif_t *hwif = drive->hwif; |
397 | int err = -EPERM; | |
398 | ||
1497943e BZ |
399 | if (arg < 0 || arg > 1) |
400 | return -EINVAL; | |
401 | ||
1da177e4 | 402 | if (!drive->id || !(drive->id->capability & 1)) |
87996204 BZ |
403 | goto out; |
404 | ||
5e37bdc0 | 405 | if (hwif->dma_ops == NULL) |
87996204 BZ |
406 | goto out; |
407 | ||
408 | err = -EBUSY; | |
409 | if (ide_spin_wait_hwgroup(drive)) | |
410 | goto out; | |
411 | /* | |
412 | * set ->busy flag, unlock and let it ride | |
413 | */ | |
414 | hwif->hwgroup->busy = 1; | |
415 | spin_unlock_irq(&ide_lock); | |
416 | ||
417 | err = 0; | |
418 | ||
1da177e4 | 419 | if (arg) { |
23b1bd45 | 420 | if (ide_set_dma(drive)) |
87996204 | 421 | err = -EIO; |
7469aaf6 BZ |
422 | } else |
423 | ide_dma_off(drive); | |
87996204 BZ |
424 | |
425 | /* | |
426 | * lock, clear ->busy flag and unlock before leaving | |
427 | */ | |
428 | spin_lock_irq(&ide_lock); | |
429 | hwif->hwgroup->busy = 0; | |
430 | spin_unlock_irq(&ide_lock); | |
431 | out: | |
432 | return err; | |
1da177e4 | 433 | #else |
1497943e BZ |
434 | if (arg < 0 || arg > 1) |
435 | return -EINVAL; | |
436 | ||
1da177e4 LT |
437 | return -EPERM; |
438 | #endif | |
439 | } | |
440 | ||
7662d046 | 441 | int set_pio_mode(ide_drive_t *drive, int arg) |
1da177e4 | 442 | { |
5b114715 | 443 | struct request *rq; |
784506cb | 444 | ide_hwif_t *hwif = drive->hwif; |
ac95beed | 445 | const struct ide_port_ops *port_ops = hwif->port_ops; |
1da177e4 | 446 | |
1497943e BZ |
447 | if (arg < 0 || arg > 255) |
448 | return -EINVAL; | |
449 | ||
ac95beed | 450 | if (port_ops == NULL || port_ops->set_pio_mode == NULL || |
784506cb | 451 | (hwif->host_flags & IDE_HFLAG_NO_SET_MODE)) |
1da177e4 | 452 | return -ENOSYS; |
26bcb879 | 453 | |
1da177e4 LT |
454 | if (drive->special.b.set_tune) |
455 | return -EBUSY; | |
145b75e9 | 456 | |
5b114715 FT |
457 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
458 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
145b75e9 | 459 | |
1da177e4 LT |
460 | drive->tune_req = (u8) arg; |
461 | drive->special.b.set_tune = 1; | |
5b114715 FT |
462 | |
463 | blk_execute_rq(drive->queue, NULL, rq, 0); | |
464 | blk_put_request(rq); | |
465 | ||
1da177e4 LT |
466 | return 0; |
467 | } | |
468 | ||
1497943e BZ |
469 | static int set_unmaskirq(ide_drive_t *drive, int arg) |
470 | { | |
471 | if (drive->no_unmask) | |
472 | return -EPERM; | |
473 | ||
474 | if (arg < 0 || arg > 1) | |
475 | return -EINVAL; | |
476 | ||
477 | if (ide_spin_wait_hwgroup(drive)) | |
478 | return -EBUSY; | |
479 | drive->unmask = arg; | |
480 | spin_unlock_irq(&ide_lock); | |
481 | ||
482 | return 0; | |
483 | } | |
484 | ||
b887d2e6 | 485 | static int generic_ide_suspend(struct device *dev, pm_message_t mesg) |
1da177e4 LT |
486 | { |
487 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 488 | ide_hwif_t *hwif = HWIF(drive); |
5b114715 | 489 | struct request *rq; |
1da177e4 LT |
490 | struct request_pm_state rqpm; |
491 | ide_task_t args; | |
5e32132b | 492 | int ret; |
1da177e4 | 493 | |
e3a59b4d HR |
494 | /* Call ACPI _GTM only once */ |
495 | if (!(drive->dn % 2)) | |
496 | ide_acpi_get_timing(hwif); | |
497 | ||
1da177e4 LT |
498 | memset(&rqpm, 0, sizeof(rqpm)); |
499 | memset(&args, 0, sizeof(args)); | |
5b114715 FT |
500 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
501 | rq->cmd_type = REQ_TYPE_PM_SUSPEND; | |
502 | rq->special = &args; | |
503 | rq->data = &rqpm; | |
1da177e4 | 504 | rqpm.pm_step = ide_pm_state_start_suspend; |
b887d2e6 DB |
505 | if (mesg.event == PM_EVENT_PRETHAW) |
506 | mesg.event = PM_EVENT_FREEZE; | |
507 | rqpm.pm_state = mesg.event; | |
1da177e4 | 508 | |
5b114715 FT |
509 | ret = blk_execute_rq(drive->queue, NULL, rq, 0); |
510 | blk_put_request(rq); | |
5e32132b SL |
511 | /* only call ACPI _PS3 after both drivers are suspended */ |
512 | if (!ret && (((drive->dn % 2) && hwif->drives[0].present | |
513 | && hwif->drives[1].present) | |
514 | || !hwif->drives[0].present | |
515 | || !hwif->drives[1].present)) | |
516 | ide_acpi_set_state(hwif, 0); | |
517 | return ret; | |
1da177e4 LT |
518 | } |
519 | ||
520 | static int generic_ide_resume(struct device *dev) | |
521 | { | |
522 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 523 | ide_hwif_t *hwif = HWIF(drive); |
5b114715 | 524 | struct request *rq; |
1da177e4 LT |
525 | struct request_pm_state rqpm; |
526 | ide_task_t args; | |
0d2157f7 | 527 | int err; |
1da177e4 | 528 | |
e3a59b4d | 529 | /* Call ACPI _STM only once */ |
5e32132b SL |
530 | if (!(drive->dn % 2)) { |
531 | ide_acpi_set_state(hwif, 1); | |
e3a59b4d | 532 | ide_acpi_push_timing(hwif); |
5e32132b | 533 | } |
e3a59b4d HR |
534 | |
535 | ide_acpi_exec_tfs(drive); | |
536 | ||
1da177e4 LT |
537 | memset(&rqpm, 0, sizeof(rqpm)); |
538 | memset(&args, 0, sizeof(args)); | |
5b114715 FT |
539 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
540 | rq->cmd_type = REQ_TYPE_PM_RESUME; | |
541 | rq->cmd_flags |= REQ_PREEMPT; | |
542 | rq->special = &args; | |
543 | rq->data = &rqpm; | |
1da177e4 | 544 | rqpm.pm_step = ide_pm_state_start_resume; |
ca078bae | 545 | rqpm.pm_state = PM_EVENT_ON; |
1da177e4 | 546 | |
5b114715 FT |
547 | err = blk_execute_rq(drive->queue, NULL, rq, 1); |
548 | blk_put_request(rq); | |
0d2157f7 | 549 | |
ce9b2b0a RW |
550 | if (err == 0 && dev->driver) { |
551 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
552 | ||
553 | if (drv->resume) | |
554 | drv->resume(drive); | |
555 | } | |
0d2157f7 LT |
556 | |
557 | return err; | |
1da177e4 LT |
558 | } |
559 | ||
560 | int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, | |
561 | unsigned int cmd, unsigned long arg) | |
562 | { | |
1497943e | 563 | unsigned long flags; |
1da177e4 | 564 | ide_driver_t *drv; |
1da177e4 | 565 | void __user *p = (void __user *)arg; |
1985026d | 566 | int err = 0, (*setfunc)(ide_drive_t *, int); |
1497943e | 567 | u8 *val; |
1da177e4 | 568 | |
1497943e BZ |
569 | switch (cmd) { |
570 | case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val; | |
571 | case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val; | |
572 | case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val; | |
573 | case HDIO_GET_DMA: val = &drive->using_dma; goto read_val; | |
574 | case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val; | |
575 | case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val; | |
576 | case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val; | |
577 | case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val; | |
578 | case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val; | |
1da177e4 | 579 | } |
1da177e4 LT |
580 | |
581 | switch (cmd) { | |
1da177e4 LT |
582 | case HDIO_OBSOLETE_IDENTITY: |
583 | case HDIO_GET_IDENTITY: | |
584 | if (bdev != bdev->bd_contains) | |
585 | return -EINVAL; | |
586 | if (drive->id_read == 0) | |
587 | return -ENOMSG; | |
588 | if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142)) | |
589 | return -EFAULT; | |
590 | return 0; | |
591 | ||
592 | case HDIO_GET_NICE: | |
593 | return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP | | |
594 | drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP | | |
92b83c8f | 595 | drive->nice1 << IDE_NICE_1, |
1da177e4 | 596 | (long __user *) arg); |
1da177e4 LT |
597 | #ifdef CONFIG_IDE_TASK_IOCTL |
598 | case HDIO_DRIVE_TASKFILE: | |
599 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
600 | return -EACCES; | |
601 | switch(drive->media) { | |
602 | case ide_disk: | |
603 | return ide_taskfile_ioctl(drive, cmd, arg); | |
604 | default: | |
605 | return -ENOMSG; | |
606 | } | |
607 | #endif /* CONFIG_IDE_TASK_IOCTL */ | |
608 | ||
609 | case HDIO_DRIVE_CMD: | |
610 | if (!capable(CAP_SYS_RAWIO)) | |
611 | return -EACCES; | |
612 | return ide_cmd_ioctl(drive, cmd, arg); | |
613 | ||
614 | case HDIO_DRIVE_TASK: | |
615 | if (!capable(CAP_SYS_RAWIO)) | |
616 | return -EACCES; | |
617 | return ide_task_ioctl(drive, cmd, arg); | |
1da177e4 LT |
618 | case HDIO_SET_NICE: |
619 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; | |
620 | if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1)))) | |
621 | return -EPERM; | |
622 | drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1; | |
623 | drv = *(ide_driver_t **)bdev->bd_disk->private_data; | |
624 | if (drive->dsc_overlap && !drv->supports_dsc_overlap) { | |
625 | drive->dsc_overlap = 0; | |
626 | return -EPERM; | |
627 | } | |
628 | drive->nice1 = (arg >> IDE_NICE_1) & 1; | |
629 | return 0; | |
630 | case HDIO_DRIVE_RESET: | |
dbecebca BZ |
631 | if (!capable(CAP_SYS_ADMIN)) |
632 | return -EACCES; | |
633 | ||
1da177e4 LT |
634 | /* |
635 | * Abort the current command on the | |
636 | * group if there is one, taking | |
637 | * care not to allow anything else | |
638 | * to be queued and to die on the | |
639 | * spot if we miss one somehow | |
640 | */ | |
641 | ||
642 | spin_lock_irqsave(&ide_lock, flags); | |
643 | ||
913759ac AC |
644 | if (HWGROUP(drive)->resetting) { |
645 | spin_unlock_irqrestore(&ide_lock, flags); | |
646 | return -EBUSY; | |
647 | } | |
648 | ||
1da177e4 LT |
649 | ide_abort(drive, "drive reset"); |
650 | ||
125e1874 | 651 | BUG_ON(HWGROUP(drive)->handler); |
dbecebca | 652 | |
1da177e4 LT |
653 | /* Ensure nothing gets queued after we |
654 | drop the lock. Reset will clear the busy */ | |
dbecebca | 655 | |
1da177e4 LT |
656 | HWGROUP(drive)->busy = 1; |
657 | spin_unlock_irqrestore(&ide_lock, flags); | |
658 | (void) ide_do_reset(drive); | |
659 | ||
660 | return 0; | |
1da177e4 LT |
661 | case HDIO_GET_BUSSTATE: |
662 | if (!capable(CAP_SYS_ADMIN)) | |
663 | return -EACCES; | |
664 | if (put_user(HWIF(drive)->bus_state, (long __user *)arg)) | |
665 | return -EFAULT; | |
666 | return 0; | |
667 | ||
668 | case HDIO_SET_BUSSTATE: | |
669 | if (!capable(CAP_SYS_ADMIN)) | |
670 | return -EACCES; | |
1da177e4 LT |
671 | return -EOPNOTSUPP; |
672 | default: | |
673 | return -EINVAL; | |
674 | } | |
1497943e BZ |
675 | |
676 | read_val: | |
f9383c42 | 677 | mutex_lock(&ide_setting_mtx); |
1497943e BZ |
678 | spin_lock_irqsave(&ide_lock, flags); |
679 | err = *val; | |
680 | spin_unlock_irqrestore(&ide_lock, flags); | |
f9383c42 | 681 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
682 | return err >= 0 ? put_user(err, (long __user *)arg) : err; |
683 | ||
684 | set_val: | |
685 | if (bdev != bdev->bd_contains) | |
686 | err = -EINVAL; | |
687 | else { | |
688 | if (!capable(CAP_SYS_ADMIN)) | |
689 | err = -EACCES; | |
690 | else { | |
f9383c42 | 691 | mutex_lock(&ide_setting_mtx); |
1497943e | 692 | err = setfunc(drive, arg); |
f9383c42 | 693 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
694 | } |
695 | } | |
696 | return err; | |
1da177e4 LT |
697 | } |
698 | ||
699 | EXPORT_SYMBOL(generic_ide_ioctl); | |
700 | ||
1da177e4 LT |
701 | /* |
702 | * ide_setup() gets called VERY EARLY during initialization, | |
232595ea | 703 | * to handle kernel "command line" strings beginning with "ide". |
1da177e4 | 704 | * |
1c10e938 | 705 | * Remember to update Documentation/ide/ide.txt if you change something here. |
1da177e4 LT |
706 | */ |
707 | static int __init ide_setup(char *s) | |
708 | { | |
1da177e4 | 709 | printk(KERN_INFO "ide_setup: %s", s); |
1da177e4 LT |
710 | |
711 | #ifdef CONFIG_BLK_DEV_IDEDOUBLER | |
712 | if (!strcmp(s, "ide=doubler")) { | |
713 | extern int ide_doubler; | |
714 | ||
715 | printk(" : Enabled support for IDE doublers\n"); | |
716 | ide_doubler = 1; | |
9dcba7f2 | 717 | goto obsolete_option; |
1da177e4 LT |
718 | } |
719 | #endif /* CONFIG_BLK_DEV_IDEDOUBLER */ | |
720 | ||
721 | if (!strcmp(s, "ide=nodma")) { | |
722 | printk(" : Prevented DMA\n"); | |
723 | noautodma = 1; | |
c223701c | 724 | goto obsolete_option; |
1da177e4 LT |
725 | } |
726 | ||
e3a59b4d HR |
727 | #ifdef CONFIG_BLK_DEV_IDEACPI |
728 | if (!strcmp(s, "ide=noacpi")) { | |
729 | //printk(" : Disable IDE ACPI support.\n"); | |
730 | ide_noacpi = 1; | |
1dbfeb4b | 731 | goto obsolete_option; |
e3a59b4d HR |
732 | } |
733 | if (!strcmp(s, "ide=acpigtf")) { | |
734 | //printk(" : Enable IDE ACPI _GTF support.\n"); | |
1dbfeb4b BZ |
735 | ide_acpigtf = 1; |
736 | goto obsolete_option; | |
e3a59b4d HR |
737 | } |
738 | if (!strcmp(s, "ide=acpionboot")) { | |
739 | //printk(" : Call IDE ACPI methods on boot.\n"); | |
1dbfeb4b BZ |
740 | ide_acpionboot = 1; |
741 | goto obsolete_option; | |
e3a59b4d HR |
742 | } |
743 | #endif /* CONFIG_BLK_DEV_IDEACPI */ | |
744 | ||
1da177e4 LT |
745 | printk(" -- BAD OPTION\n"); |
746 | return 1; | |
747 | obsolete_option: | |
748 | printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n"); | |
749 | return 1; | |
1da177e4 LT |
750 | } |
751 | ||
1da177e4 LT |
752 | EXPORT_SYMBOL(ide_lock); |
753 | ||
8604affd BZ |
754 | static int ide_bus_match(struct device *dev, struct device_driver *drv) |
755 | { | |
756 | return 1; | |
757 | } | |
758 | ||
263756ec KS |
759 | static char *media_string(ide_drive_t *drive) |
760 | { | |
761 | switch (drive->media) { | |
762 | case ide_disk: | |
763 | return "disk"; | |
764 | case ide_cdrom: | |
765 | return "cdrom"; | |
766 | case ide_tape: | |
767 | return "tape"; | |
768 | case ide_floppy: | |
769 | return "floppy"; | |
a7a832de DK |
770 | case ide_optical: |
771 | return "optical"; | |
263756ec KS |
772 | default: |
773 | return "UNKNOWN"; | |
774 | } | |
775 | } | |
776 | ||
777 | static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf) | |
778 | { | |
779 | ide_drive_t *drive = to_ide_device(dev); | |
780 | return sprintf(buf, "%s\n", media_string(drive)); | |
781 | } | |
782 | ||
783 | static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf) | |
784 | { | |
785 | ide_drive_t *drive = to_ide_device(dev); | |
786 | return sprintf(buf, "%s\n", drive->name); | |
787 | } | |
788 | ||
789 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) | |
790 | { | |
791 | ide_drive_t *drive = to_ide_device(dev); | |
792 | return sprintf(buf, "ide:m-%s\n", media_string(drive)); | |
793 | } | |
794 | ||
e11b9035 BZ |
795 | static ssize_t model_show(struct device *dev, struct device_attribute *attr, |
796 | char *buf) | |
797 | { | |
798 | ide_drive_t *drive = to_ide_device(dev); | |
799 | return sprintf(buf, "%s\n", drive->id->model); | |
800 | } | |
801 | ||
802 | static ssize_t firmware_show(struct device *dev, struct device_attribute *attr, | |
803 | char *buf) | |
804 | { | |
805 | ide_drive_t *drive = to_ide_device(dev); | |
806 | return sprintf(buf, "%s\n", drive->id->fw_rev); | |
807 | } | |
808 | ||
809 | static ssize_t serial_show(struct device *dev, struct device_attribute *attr, | |
810 | char *buf) | |
811 | { | |
812 | ide_drive_t *drive = to_ide_device(dev); | |
813 | return sprintf(buf, "%s\n", drive->id->serial_no); | |
814 | } | |
815 | ||
263756ec KS |
816 | static struct device_attribute ide_dev_attrs[] = { |
817 | __ATTR_RO(media), | |
818 | __ATTR_RO(drivename), | |
819 | __ATTR_RO(modalias), | |
e11b9035 BZ |
820 | __ATTR_RO(model), |
821 | __ATTR_RO(firmware), | |
822 | __ATTR(serial, 0400, serial_show, NULL), | |
263756ec KS |
823 | __ATTR_NULL |
824 | }; | |
825 | ||
7eff2e7a | 826 | static int ide_uevent(struct device *dev, struct kobj_uevent_env *env) |
263756ec KS |
827 | { |
828 | ide_drive_t *drive = to_ide_device(dev); | |
7eff2e7a KS |
829 | |
830 | add_uevent_var(env, "MEDIA=%s", media_string(drive)); | |
831 | add_uevent_var(env, "DRIVENAME=%s", drive->name); | |
832 | add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive)); | |
263756ec KS |
833 | return 0; |
834 | } | |
835 | ||
4031bbe4 RK |
836 | static int generic_ide_probe(struct device *dev) |
837 | { | |
838 | ide_drive_t *drive = to_ide_device(dev); | |
839 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
840 | ||
841 | return drv->probe ? drv->probe(drive) : -ENODEV; | |
842 | } | |
843 | ||
844 | static int generic_ide_remove(struct device *dev) | |
845 | { | |
846 | ide_drive_t *drive = to_ide_device(dev); | |
847 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
848 | ||
849 | if (drv->remove) | |
850 | drv->remove(drive); | |
851 | ||
852 | return 0; | |
853 | } | |
854 | ||
855 | static void generic_ide_shutdown(struct device *dev) | |
856 | { | |
857 | ide_drive_t *drive = to_ide_device(dev); | |
858 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
859 | ||
860 | if (dev->driver && drv->shutdown) | |
861 | drv->shutdown(drive); | |
862 | } | |
863 | ||
1da177e4 LT |
864 | struct bus_type ide_bus_type = { |
865 | .name = "ide", | |
8604affd | 866 | .match = ide_bus_match, |
263756ec | 867 | .uevent = ide_uevent, |
4031bbe4 RK |
868 | .probe = generic_ide_probe, |
869 | .remove = generic_ide_remove, | |
870 | .shutdown = generic_ide_shutdown, | |
263756ec | 871 | .dev_attrs = ide_dev_attrs, |
1da177e4 LT |
872 | .suspend = generic_ide_suspend, |
873 | .resume = generic_ide_resume, | |
874 | }; | |
875 | ||
8604affd BZ |
876 | EXPORT_SYMBOL_GPL(ide_bus_type); |
877 | ||
ebae41a5 BZ |
878 | int ide_vlb_clk; |
879 | EXPORT_SYMBOL_GPL(ide_vlb_clk); | |
880 | ||
881 | module_param_named(vlb_clock, ide_vlb_clk, int, 0); | |
882 | MODULE_PARM_DESC(vlb_clock, "VLB clock frequency (in MHz)"); | |
883 | ||
884 | int ide_pci_clk; | |
885 | EXPORT_SYMBOL_GPL(ide_pci_clk); | |
886 | ||
887 | module_param_named(pci_clock, ide_pci_clk, int, 0); | |
888 | MODULE_PARM_DESC(pci_clock, "PCI bus clock frequency (in MHz)"); | |
889 | ||
6e87543a BZ |
890 | static int ide_set_dev_param_mask(const char *s, struct kernel_param *kp) |
891 | { | |
892 | int a, b, i, j = 1; | |
893 | unsigned int *dev_param_mask = (unsigned int *)kp->arg; | |
894 | ||
895 | if (sscanf(s, "%d.%d:%d", &a, &b, &j) != 3 && | |
896 | sscanf(s, "%d.%d", &a, &b) != 2) | |
897 | return -EINVAL; | |
898 | ||
899 | i = a * MAX_DRIVES + b; | |
900 | ||
901 | if (i >= MAX_HWIFS * MAX_DRIVES || j < 0 || j > 1) | |
902 | return -EINVAL; | |
903 | ||
904 | if (j) | |
905 | *dev_param_mask |= (1 << i); | |
906 | else | |
907 | *dev_param_mask &= (1 << i); | |
908 | ||
909 | return 0; | |
910 | } | |
911 | ||
912 | static unsigned int ide_nodma; | |
913 | ||
914 | module_param_call(nodma, ide_set_dev_param_mask, NULL, &ide_nodma, 0); | |
915 | MODULE_PARM_DESC(nodma, "disallow DMA for a device"); | |
916 | ||
917 | static unsigned int ide_noflush; | |
918 | ||
919 | module_param_call(noflush, ide_set_dev_param_mask, NULL, &ide_noflush, 0); | |
920 | MODULE_PARM_DESC(noflush, "disable flush requests for a device"); | |
921 | ||
922 | static unsigned int ide_noprobe; | |
923 | ||
924 | module_param_call(noprobe, ide_set_dev_param_mask, NULL, &ide_noprobe, 0); | |
925 | MODULE_PARM_DESC(noprobe, "skip probing for a device"); | |
926 | ||
927 | static unsigned int ide_nowerr; | |
928 | ||
929 | module_param_call(nowerr, ide_set_dev_param_mask, NULL, &ide_nowerr, 0); | |
930 | MODULE_PARM_DESC(nowerr, "ignore the WRERR_STAT bit for a device"); | |
931 | ||
4706a7e0 BZ |
932 | static unsigned int ide_cdroms; |
933 | ||
934 | module_param_call(cdrom, ide_set_dev_param_mask, NULL, &ide_cdroms, 0); | |
935 | MODULE_PARM_DESC(cdrom, "force device as a CD-ROM"); | |
936 | ||
937 | struct chs_geom { | |
938 | unsigned int cyl; | |
939 | u8 head; | |
940 | u8 sect; | |
941 | }; | |
942 | ||
943 | static unsigned int ide_disks; | |
944 | static struct chs_geom ide_disks_chs[MAX_HWIFS * MAX_DRIVES]; | |
945 | ||
946 | static int ide_set_disk_chs(const char *str, struct kernel_param *kp) | |
947 | { | |
948 | int a, b, c = 0, h = 0, s = 0, i, j = 1; | |
949 | ||
950 | if (sscanf(str, "%d.%d:%d,%d,%d", &a, &b, &c, &h, &s) != 5 && | |
951 | sscanf(str, "%d.%d:%d", &a, &b, &j) != 3) | |
952 | return -EINVAL; | |
953 | ||
954 | i = a * MAX_DRIVES + b; | |
955 | ||
956 | if (i >= MAX_HWIFS * MAX_DRIVES || j < 0 || j > 1) | |
957 | return -EINVAL; | |
958 | ||
959 | if (c > INT_MAX || h > 255 || s > 255) | |
960 | return -EINVAL; | |
961 | ||
962 | if (j) | |
963 | ide_disks |= (1 << i); | |
964 | else | |
965 | ide_disks &= (1 << i); | |
966 | ||
967 | ide_disks_chs[i].cyl = c; | |
968 | ide_disks_chs[i].head = h; | |
969 | ide_disks_chs[i].sect = s; | |
970 | ||
971 | return 0; | |
972 | } | |
973 | ||
974 | module_param_call(chs, ide_set_disk_chs, NULL, NULL, 0); | |
975 | MODULE_PARM_DESC(chs, "force device as a disk (using CHS)"); | |
976 | ||
6e87543a BZ |
977 | static void ide_dev_apply_params(ide_drive_t *drive) |
978 | { | |
979 | int i = drive->hwif->index * MAX_DRIVES + drive->select.b.unit; | |
980 | ||
981 | if (ide_nodma & (1 << i)) { | |
982 | printk(KERN_INFO "ide: disallowing DMA for %s\n", drive->name); | |
983 | drive->nodma = 1; | |
984 | } | |
985 | if (ide_noflush & (1 << i)) { | |
986 | printk(KERN_INFO "ide: disabling flush requests for %s\n", | |
987 | drive->name); | |
988 | drive->noflush = 1; | |
989 | } | |
990 | if (ide_noprobe & (1 << i)) { | |
991 | printk(KERN_INFO "ide: skipping probe for %s\n", drive->name); | |
992 | drive->noprobe = 1; | |
993 | } | |
994 | if (ide_nowerr & (1 << i)) { | |
995 | printk(KERN_INFO "ide: ignoring the WRERR_STAT bit for %s\n", | |
996 | drive->name); | |
997 | drive->bad_wstat = BAD_R_STAT; | |
998 | } | |
4706a7e0 BZ |
999 | if (ide_cdroms & (1 << i)) { |
1000 | printk(KERN_INFO "ide: forcing %s as a CD-ROM\n", drive->name); | |
1001 | drive->present = 1; | |
1002 | drive->media = ide_cdrom; | |
1003 | /* an ATAPI device ignores DRDY */ | |
1004 | drive->ready_stat = 0; | |
1005 | } | |
1006 | if (ide_disks & (1 << i)) { | |
1007 | drive->cyl = drive->bios_cyl = ide_disks_chs[i].cyl; | |
1008 | drive->head = drive->bios_head = ide_disks_chs[i].head; | |
1009 | drive->sect = drive->bios_sect = ide_disks_chs[i].sect; | |
1010 | drive->forced_geom = 1; | |
1011 | printk(KERN_INFO "ide: forcing %s as a disk (%d/%d/%d)\n", | |
1012 | drive->name, | |
1013 | drive->cyl, drive->head, drive->sect); | |
1014 | drive->present = 1; | |
1015 | drive->media = ide_disk; | |
1016 | drive->ready_stat = READY_STAT; | |
1017 | } | |
6e87543a BZ |
1018 | } |
1019 | ||
9fd91d95 BZ |
1020 | static unsigned int ide_ignore_cable; |
1021 | ||
1022 | static int ide_set_ignore_cable(const char *s, struct kernel_param *kp) | |
1023 | { | |
1024 | int i, j = 1; | |
1025 | ||
1026 | if (sscanf(s, "%d:%d", &i, &j) != 2 && sscanf(s, "%d", &i) != 1) | |
1027 | return -EINVAL; | |
1028 | ||
1029 | if (i >= MAX_HWIFS || j < 0 || j > 1) | |
1030 | return -EINVAL; | |
1031 | ||
1032 | if (j) | |
1033 | ide_ignore_cable |= (1 << i); | |
1034 | else | |
1035 | ide_ignore_cable &= (1 << i); | |
1036 | ||
1037 | return 0; | |
1038 | } | |
1039 | ||
1040 | module_param_call(ignore_cable, ide_set_ignore_cable, NULL, NULL, 0); | |
1041 | MODULE_PARM_DESC(ignore_cable, "ignore cable detection"); | |
1042 | ||
1043 | void ide_port_apply_params(ide_hwif_t *hwif) | |
1044 | { | |
6e87543a BZ |
1045 | int i; |
1046 | ||
9fd91d95 BZ |
1047 | if (ide_ignore_cable & (1 << hwif->index)) { |
1048 | printk(KERN_INFO "ide: ignoring cable detection for %s\n", | |
1049 | hwif->name); | |
1050 | hwif->cbl = ATA_CBL_PATA40_SHORT; | |
1051 | } | |
6e87543a BZ |
1052 | |
1053 | for (i = 0; i < MAX_DRIVES; i++) | |
1054 | ide_dev_apply_params(&hwif->drives[i]); | |
9fd91d95 BZ |
1055 | } |
1056 | ||
1da177e4 LT |
1057 | /* |
1058 | * This is gets invoked once during initialization, to set *everything* up | |
1059 | */ | |
1060 | static int __init ide_init(void) | |
1061 | { | |
349ae23f RD |
1062 | int ret; |
1063 | ||
eba8ff94 | 1064 | printk(KERN_INFO "Uniform Multi-Platform E-IDE driver\n"); |
537f06c5 | 1065 | |
349ae23f RD |
1066 | ret = bus_register(&ide_bus_type); |
1067 | if (ret < 0) { | |
1068 | printk(KERN_WARNING "IDE: bus_register error: %d\n", ret); | |
1069 | return ret; | |
1070 | } | |
1da177e4 | 1071 | |
f74c9141 BZ |
1072 | ide_port_class = class_create(THIS_MODULE, "ide_port"); |
1073 | if (IS_ERR(ide_port_class)) { | |
1074 | ret = PTR_ERR(ide_port_class); | |
1075 | goto out_port_class; | |
1076 | } | |
f74c9141 | 1077 | |
1da177e4 LT |
1078 | init_ide_data(); |
1079 | ||
5cbf79cd | 1080 | proc_ide_create(); |
1da177e4 | 1081 | |
1da177e4 | 1082 | return 0; |
f74c9141 BZ |
1083 | |
1084 | out_port_class: | |
1085 | bus_unregister(&ide_bus_type); | |
1086 | ||
1087 | return ret; | |
1da177e4 LT |
1088 | } |
1089 | ||
1090 | #ifdef MODULE | |
1091 | static char *options = NULL; | |
1092 | module_param(options, charp, 0); | |
1093 | MODULE_LICENSE("GPL"); | |
1094 | ||
1095 | static void __init parse_options (char *line) | |
1096 | { | |
1097 | char *next = line; | |
1098 | ||
1099 | if (line == NULL || !*line) | |
1100 | return; | |
1101 | while ((line = next) != NULL) { | |
1102 | if ((next = strchr(line,' ')) != NULL) | |
1103 | *next++ = 0; | |
1104 | if (!ide_setup(line)) | |
1105 | printk (KERN_INFO "Unknown option '%s'\n", line); | |
1106 | } | |
1107 | } | |
1108 | ||
fbd8ad30 | 1109 | int __init init_module (void) |
1da177e4 LT |
1110 | { |
1111 | parse_options(options); | |
1112 | return ide_init(); | |
1113 | } | |
1114 | ||
eb797227 | 1115 | void __exit cleanup_module (void) |
1da177e4 | 1116 | { |
1da177e4 | 1117 | proc_ide_destroy(); |
1da177e4 | 1118 | |
f74c9141 BZ |
1119 | class_destroy(ide_port_class); |
1120 | ||
1da177e4 LT |
1121 | bus_unregister(&ide_bus_type); |
1122 | } | |
1123 | ||
1124 | #else /* !MODULE */ | |
1125 | ||
1126 | __setup("", ide_setup); | |
1127 | ||
1128 | module_init(ide_init); | |
1129 | ||
1130 | #endif /* MODULE */ |