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 | /* |
155 | * init_ide_data() sets reasonable default values into all fields | |
156 | * of all instances of the hwifs and drives, but only on the first call. | |
157 | * Subsequent calls have no effect (they don't wipe out anything). | |
158 | * | |
159 | * This routine is normally called at driver initialization time, | |
160 | * but may also be called MUCH earlier during kernel "command-line" | |
161 | * parameter processing. As such, we cannot depend on any other parts | |
162 | * of the kernel (such as memory allocation) to be functioning yet. | |
163 | * | |
164 | * This is too bad, as otherwise we could dynamically allocate the | |
165 | * ide_drive_t structs as needed, rather than always consuming memory | |
166 | * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them. | |
167 | * | |
168 | * FIXME: We should stuff the setup data into __init and copy the | |
169 | * relevant hwifs/allocate them properly during boot. | |
170 | */ | |
171 | #define MAGIC_COOKIE 0x12345678 | |
172 | static void __init init_ide_data (void) | |
173 | { | |
1da177e4 LT |
174 | unsigned int index; |
175 | static unsigned long magic_cookie = MAGIC_COOKIE; | |
176 | ||
177 | if (magic_cookie != MAGIC_COOKIE) | |
178 | return; /* already initialized */ | |
179 | magic_cookie = 0; | |
180 | ||
181 | /* Initialise all interface structures */ | |
182 | for (index = 0; index < MAX_HWIFS; ++index) { | |
05734266 BZ |
183 | ide_hwif_t *hwif = &ide_hwifs[index]; |
184 | ||
cbb010c1 | 185 | ide_init_port_data(hwif, index); |
1da177e4 | 186 | } |
1da177e4 LT |
187 | } |
188 | ||
fbd13088 | 189 | void ide_remove_port_from_hwgroup(ide_hwif_t *hwif) |
96e5ad30 BZ |
190 | { |
191 | ide_hwgroup_t *hwgroup = hwif->hwgroup; | |
192 | ||
193 | spin_lock_irq(&ide_lock); | |
194 | /* | |
195 | * Remove us from the hwgroup, and free | |
196 | * the hwgroup if we were the only member | |
197 | */ | |
198 | if (hwif->next == hwif) { | |
199 | BUG_ON(hwgroup->hwif != hwif); | |
200 | kfree(hwgroup); | |
201 | } else { | |
202 | /* There is another interface in hwgroup. | |
203 | * Unlink us, and set hwgroup->drive and ->hwif to | |
204 | * something sane. | |
205 | */ | |
206 | ide_hwif_t *g = hwgroup->hwif; | |
207 | ||
208 | while (g->next != hwif) | |
209 | g = g->next; | |
210 | g->next = hwif->next; | |
211 | if (hwgroup->hwif == hwif) { | |
212 | /* Chose a random hwif for hwgroup->hwif. | |
213 | * It's guaranteed that there are no drives | |
214 | * left in the hwgroup. | |
215 | */ | |
216 | BUG_ON(hwgroup->drive != NULL); | |
217 | hwgroup->hwif = g; | |
218 | } | |
219 | BUG_ON(hwgroup->hwif == hwif); | |
220 | } | |
221 | spin_unlock_irq(&ide_lock); | |
222 | } | |
223 | ||
71bf9f6f | 224 | /* Called with ide_lock held. */ |
2dde7861 | 225 | static void __ide_port_unregister_devices(ide_hwif_t *hwif) |
71bf9f6f BZ |
226 | { |
227 | int i; | |
228 | ||
229 | for (i = 0; i < MAX_DRIVES; i++) { | |
230 | ide_drive_t *drive = &hwif->drives[i]; | |
231 | ||
232 | if (drive->present) { | |
233 | spin_unlock_irq(&ide_lock); | |
234 | device_unregister(&drive->gendev); | |
235 | wait_for_completion(&drive->gendev_rel_comp); | |
236 | spin_lock_irq(&ide_lock); | |
237 | } | |
238 | } | |
239 | } | |
240 | ||
2dde7861 BZ |
241 | void ide_port_unregister_devices(ide_hwif_t *hwif) |
242 | { | |
243 | mutex_lock(&ide_cfg_mtx); | |
244 | spin_lock_irq(&ide_lock); | |
245 | __ide_port_unregister_devices(hwif); | |
246 | hwif->present = 0; | |
247 | ide_port_init_devices_data(hwif); | |
248 | spin_unlock_irq(&ide_lock); | |
249 | mutex_unlock(&ide_cfg_mtx); | |
250 | } | |
251 | EXPORT_SYMBOL_GPL(ide_port_unregister_devices); | |
252 | ||
1da177e4 | 253 | /** |
020e322d | 254 | * ide_unregister - free an IDE interface |
387750c3 | 255 | * @hwif: IDE interface |
1da177e4 LT |
256 | * |
257 | * Perform the final unregister of an IDE interface. At the moment | |
258 | * we don't refcount interfaces so this will also get split up. | |
259 | * | |
260 | * Locking: | |
261 | * The caller must not hold the IDE locks | |
262 | * The drive present/vanishing is not yet properly locked | |
263 | * Take care with the callbacks. These have been split to avoid | |
264 | * deadlocking the IDE layer. The shutdown callback is called | |
265 | * before we take the lock and free resources. It is up to the | |
266 | * caller to be sure there is no pending I/O here, and that | |
020e322d SS |
267 | * the interface will not be reopened (present/vanishing locking |
268 | * isn't yet done BTW). After we commit to the final kill we | |
1da177e4 LT |
269 | * call the cleanup callback with the ide locks held. |
270 | * | |
271 | * Unregister restores the hwif structures to the default state. | |
272 | * This is raving bonkers. | |
273 | */ | |
274 | ||
387750c3 | 275 | void ide_unregister(ide_hwif_t *hwif) |
1da177e4 | 276 | { |
387750c3 | 277 | ide_hwif_t *g; |
1da177e4 | 278 | ide_hwgroup_t *hwgroup; |
71bf9f6f | 279 | int irq_count = 0; |
1da177e4 | 280 | |
1da177e4 LT |
281 | BUG_ON(in_interrupt()); |
282 | BUG_ON(irqs_disabled()); | |
bd8a59e2 | 283 | |
ef29888e | 284 | mutex_lock(&ide_cfg_mtx); |
1da177e4 | 285 | |
bd8a59e2 BZ |
286 | spin_lock_irq(&ide_lock); |
287 | if (hwif->present) { | |
288 | __ide_port_unregister_devices(hwif); | |
289 | hwif->present = 0; | |
290 | } | |
1da177e4 LT |
291 | spin_unlock_irq(&ide_lock); |
292 | ||
5cbf79cd | 293 | ide_proc_unregister_port(hwif); |
1da177e4 LT |
294 | |
295 | hwgroup = hwif->hwgroup; | |
296 | /* | |
297 | * free the irq if we were the only hwif using it | |
298 | */ | |
299 | g = hwgroup->hwif; | |
300 | do { | |
301 | if (g->irq == hwif->irq) | |
302 | ++irq_count; | |
303 | g = g->next; | |
304 | } while (g != hwgroup->hwif); | |
305 | if (irq_count == 1) | |
306 | free_irq(hwif->irq, hwgroup); | |
307 | ||
96e5ad30 | 308 | ide_remove_port_from_hwgroup(hwif); |
1da177e4 | 309 | |
f74c9141 | 310 | device_unregister(hwif->portdev); |
1da177e4 | 311 | device_unregister(&hwif->gendev); |
f36d4024 | 312 | wait_for_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
313 | |
314 | /* | |
315 | * Remove us from the kernel's knowledge | |
316 | */ | |
317 | blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); | |
318 | kfree(hwif->sg_table); | |
319 | unregister_blkdev(hwif->major, hwif->name); | |
1da177e4 | 320 | |
93de00fd | 321 | if (hwif->dma_base) |
0d1bad21 | 322 | ide_release_dma_engine(hwif); |
1da177e4 | 323 | |
2b54ed94 | 324 | spin_lock_irq(&ide_lock); |
1da177e4 | 325 | /* restore hwif data to pristine status */ |
387750c3 | 326 | ide_init_port_data(hwif, hwif->index); |
1da177e4 | 327 | spin_unlock_irq(&ide_lock); |
2b54ed94 | 328 | |
ef29888e | 329 | mutex_unlock(&ide_cfg_mtx); |
1da177e4 LT |
330 | } |
331 | ||
332 | EXPORT_SYMBOL(ide_unregister); | |
333 | ||
57c802e8 BZ |
334 | void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw) |
335 | { | |
4c3032d8 | 336 | memcpy(&hwif->io_ports, &hw->io_ports, sizeof(hwif->io_ports)); |
57c802e8 | 337 | hwif->irq = hw->irq; |
57c802e8 BZ |
338 | hwif->chipset = hw->chipset; |
339 | hwif->gendev.parent = hw->dev; | |
340 | hwif->ack_intr = hw->ack_intr; | |
341 | } | |
342 | EXPORT_SYMBOL_GPL(ide_init_port_hw); | |
343 | ||
1da177e4 LT |
344 | /* |
345 | * Locks for IDE setting functionality | |
346 | */ | |
347 | ||
f9383c42 | 348 | DEFINE_MUTEX(ide_setting_mtx); |
1da177e4 | 349 | |
f9383c42 | 350 | EXPORT_SYMBOL_GPL(ide_setting_mtx); |
1497943e | 351 | |
1da177e4 LT |
352 | /** |
353 | * ide_spin_wait_hwgroup - wait for group | |
354 | * @drive: drive in the group | |
355 | * | |
356 | * Wait for an IDE device group to go non busy and then return | |
357 | * holding the ide_lock which guards the hwgroup->busy status | |
358 | * and right to use it. | |
359 | */ | |
360 | ||
361 | int ide_spin_wait_hwgroup (ide_drive_t *drive) | |
362 | { | |
363 | ide_hwgroup_t *hwgroup = HWGROUP(drive); | |
364 | unsigned long timeout = jiffies + (3 * HZ); | |
365 | ||
366 | spin_lock_irq(&ide_lock); | |
367 | ||
368 | while (hwgroup->busy) { | |
369 | unsigned long lflags; | |
370 | spin_unlock_irq(&ide_lock); | |
371 | local_irq_set(lflags); | |
372 | if (time_after(jiffies, timeout)) { | |
373 | local_irq_restore(lflags); | |
374 | printk(KERN_ERR "%s: channel busy\n", drive->name); | |
375 | return -EBUSY; | |
376 | } | |
377 | local_irq_restore(lflags); | |
378 | spin_lock_irq(&ide_lock); | |
379 | } | |
380 | return 0; | |
381 | } | |
382 | ||
383 | EXPORT_SYMBOL(ide_spin_wait_hwgroup); | |
384 | ||
7662d046 | 385 | int set_io_32bit(ide_drive_t *drive, int arg) |
1da177e4 | 386 | { |
1497943e BZ |
387 | if (drive->no_io_32bit) |
388 | return -EPERM; | |
389 | ||
390 | if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1)) | |
391 | return -EINVAL; | |
392 | ||
644a9d76 BZ |
393 | if (ide_spin_wait_hwgroup(drive)) |
394 | return -EBUSY; | |
395 | ||
1da177e4 | 396 | drive->io_32bit = arg; |
644a9d76 BZ |
397 | |
398 | spin_unlock_irq(&ide_lock); | |
399 | ||
1da177e4 LT |
400 | return 0; |
401 | } | |
402 | ||
1497943e BZ |
403 | static int set_ksettings(ide_drive_t *drive, int arg) |
404 | { | |
405 | if (arg < 0 || arg > 1) | |
406 | return -EINVAL; | |
407 | ||
408 | if (ide_spin_wait_hwgroup(drive)) | |
409 | return -EBUSY; | |
410 | drive->keep_settings = arg; | |
411 | spin_unlock_irq(&ide_lock); | |
412 | ||
413 | return 0; | |
414 | } | |
415 | ||
7662d046 | 416 | int set_using_dma(ide_drive_t *drive, int arg) |
1da177e4 LT |
417 | { |
418 | #ifdef CONFIG_BLK_DEV_IDEDMA | |
87996204 BZ |
419 | ide_hwif_t *hwif = drive->hwif; |
420 | int err = -EPERM; | |
421 | ||
1497943e BZ |
422 | if (arg < 0 || arg > 1) |
423 | return -EINVAL; | |
424 | ||
1da177e4 | 425 | if (!drive->id || !(drive->id->capability & 1)) |
87996204 BZ |
426 | goto out; |
427 | ||
5e37bdc0 | 428 | if (hwif->dma_ops == NULL) |
87996204 BZ |
429 | goto out; |
430 | ||
431 | err = -EBUSY; | |
432 | if (ide_spin_wait_hwgroup(drive)) | |
433 | goto out; | |
434 | /* | |
435 | * set ->busy flag, unlock and let it ride | |
436 | */ | |
437 | hwif->hwgroup->busy = 1; | |
438 | spin_unlock_irq(&ide_lock); | |
439 | ||
440 | err = 0; | |
441 | ||
1da177e4 | 442 | if (arg) { |
23b1bd45 | 443 | if (ide_set_dma(drive)) |
87996204 | 444 | err = -EIO; |
7469aaf6 BZ |
445 | } else |
446 | ide_dma_off(drive); | |
87996204 BZ |
447 | |
448 | /* | |
449 | * lock, clear ->busy flag and unlock before leaving | |
450 | */ | |
451 | spin_lock_irq(&ide_lock); | |
452 | hwif->hwgroup->busy = 0; | |
453 | spin_unlock_irq(&ide_lock); | |
454 | out: | |
455 | return err; | |
1da177e4 | 456 | #else |
1497943e BZ |
457 | if (arg < 0 || arg > 1) |
458 | return -EINVAL; | |
459 | ||
1da177e4 LT |
460 | return -EPERM; |
461 | #endif | |
462 | } | |
463 | ||
7662d046 | 464 | int set_pio_mode(ide_drive_t *drive, int arg) |
1da177e4 | 465 | { |
5b114715 | 466 | struct request *rq; |
784506cb | 467 | ide_hwif_t *hwif = drive->hwif; |
ac95beed | 468 | const struct ide_port_ops *port_ops = hwif->port_ops; |
1da177e4 | 469 | |
1497943e BZ |
470 | if (arg < 0 || arg > 255) |
471 | return -EINVAL; | |
472 | ||
ac95beed | 473 | if (port_ops == NULL || port_ops->set_pio_mode == NULL || |
784506cb | 474 | (hwif->host_flags & IDE_HFLAG_NO_SET_MODE)) |
1da177e4 | 475 | return -ENOSYS; |
26bcb879 | 476 | |
1da177e4 LT |
477 | if (drive->special.b.set_tune) |
478 | return -EBUSY; | |
145b75e9 | 479 | |
5b114715 FT |
480 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
481 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
145b75e9 | 482 | |
1da177e4 LT |
483 | drive->tune_req = (u8) arg; |
484 | drive->special.b.set_tune = 1; | |
5b114715 FT |
485 | |
486 | blk_execute_rq(drive->queue, NULL, rq, 0); | |
487 | blk_put_request(rq); | |
488 | ||
1da177e4 LT |
489 | return 0; |
490 | } | |
491 | ||
1497943e BZ |
492 | static int set_unmaskirq(ide_drive_t *drive, int arg) |
493 | { | |
494 | if (drive->no_unmask) | |
495 | return -EPERM; | |
496 | ||
497 | if (arg < 0 || arg > 1) | |
498 | return -EINVAL; | |
499 | ||
500 | if (ide_spin_wait_hwgroup(drive)) | |
501 | return -EBUSY; | |
502 | drive->unmask = arg; | |
503 | spin_unlock_irq(&ide_lock); | |
504 | ||
505 | return 0; | |
506 | } | |
507 | ||
b887d2e6 | 508 | static int generic_ide_suspend(struct device *dev, pm_message_t mesg) |
1da177e4 LT |
509 | { |
510 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 511 | ide_hwif_t *hwif = HWIF(drive); |
5b114715 | 512 | struct request *rq; |
1da177e4 LT |
513 | struct request_pm_state rqpm; |
514 | ide_task_t args; | |
5e32132b | 515 | int ret; |
1da177e4 | 516 | |
e3a59b4d HR |
517 | /* Call ACPI _GTM only once */ |
518 | if (!(drive->dn % 2)) | |
519 | ide_acpi_get_timing(hwif); | |
520 | ||
1da177e4 LT |
521 | memset(&rqpm, 0, sizeof(rqpm)); |
522 | memset(&args, 0, sizeof(args)); | |
5b114715 FT |
523 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
524 | rq->cmd_type = REQ_TYPE_PM_SUSPEND; | |
525 | rq->special = &args; | |
526 | rq->data = &rqpm; | |
1da177e4 | 527 | rqpm.pm_step = ide_pm_state_start_suspend; |
b887d2e6 DB |
528 | if (mesg.event == PM_EVENT_PRETHAW) |
529 | mesg.event = PM_EVENT_FREEZE; | |
530 | rqpm.pm_state = mesg.event; | |
1da177e4 | 531 | |
5b114715 FT |
532 | ret = blk_execute_rq(drive->queue, NULL, rq, 0); |
533 | blk_put_request(rq); | |
5e32132b SL |
534 | /* only call ACPI _PS3 after both drivers are suspended */ |
535 | if (!ret && (((drive->dn % 2) && hwif->drives[0].present | |
536 | && hwif->drives[1].present) | |
537 | || !hwif->drives[0].present | |
538 | || !hwif->drives[1].present)) | |
539 | ide_acpi_set_state(hwif, 0); | |
540 | return ret; | |
1da177e4 LT |
541 | } |
542 | ||
543 | static int generic_ide_resume(struct device *dev) | |
544 | { | |
545 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 546 | ide_hwif_t *hwif = HWIF(drive); |
5b114715 | 547 | struct request *rq; |
1da177e4 LT |
548 | struct request_pm_state rqpm; |
549 | ide_task_t args; | |
0d2157f7 | 550 | int err; |
1da177e4 | 551 | |
e3a59b4d | 552 | /* Call ACPI _STM only once */ |
5e32132b SL |
553 | if (!(drive->dn % 2)) { |
554 | ide_acpi_set_state(hwif, 1); | |
e3a59b4d | 555 | ide_acpi_push_timing(hwif); |
5e32132b | 556 | } |
e3a59b4d HR |
557 | |
558 | ide_acpi_exec_tfs(drive); | |
559 | ||
1da177e4 LT |
560 | memset(&rqpm, 0, sizeof(rqpm)); |
561 | memset(&args, 0, sizeof(args)); | |
5b114715 FT |
562 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
563 | rq->cmd_type = REQ_TYPE_PM_RESUME; | |
564 | rq->cmd_flags |= REQ_PREEMPT; | |
565 | rq->special = &args; | |
566 | rq->data = &rqpm; | |
1da177e4 | 567 | rqpm.pm_step = ide_pm_state_start_resume; |
ca078bae | 568 | rqpm.pm_state = PM_EVENT_ON; |
1da177e4 | 569 | |
5b114715 FT |
570 | err = blk_execute_rq(drive->queue, NULL, rq, 1); |
571 | blk_put_request(rq); | |
0d2157f7 | 572 | |
ce9b2b0a RW |
573 | if (err == 0 && dev->driver) { |
574 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
575 | ||
576 | if (drv->resume) | |
577 | drv->resume(drive); | |
578 | } | |
0d2157f7 LT |
579 | |
580 | return err; | |
1da177e4 LT |
581 | } |
582 | ||
583 | int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, | |
584 | unsigned int cmd, unsigned long arg) | |
585 | { | |
1497943e | 586 | unsigned long flags; |
1da177e4 | 587 | ide_driver_t *drv; |
1da177e4 | 588 | void __user *p = (void __user *)arg; |
1985026d | 589 | int err = 0, (*setfunc)(ide_drive_t *, int); |
1497943e | 590 | u8 *val; |
1da177e4 | 591 | |
1497943e BZ |
592 | switch (cmd) { |
593 | case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val; | |
594 | case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val; | |
595 | case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val; | |
596 | case HDIO_GET_DMA: val = &drive->using_dma; goto read_val; | |
597 | case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val; | |
598 | case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val; | |
599 | case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val; | |
600 | case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val; | |
601 | case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val; | |
1da177e4 | 602 | } |
1da177e4 LT |
603 | |
604 | switch (cmd) { | |
1da177e4 LT |
605 | case HDIO_OBSOLETE_IDENTITY: |
606 | case HDIO_GET_IDENTITY: | |
607 | if (bdev != bdev->bd_contains) | |
608 | return -EINVAL; | |
609 | if (drive->id_read == 0) | |
610 | return -ENOMSG; | |
611 | if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142)) | |
612 | return -EFAULT; | |
613 | return 0; | |
614 | ||
615 | case HDIO_GET_NICE: | |
616 | return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP | | |
617 | drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP | | |
92b83c8f | 618 | drive->nice1 << IDE_NICE_1, |
1da177e4 | 619 | (long __user *) arg); |
1da177e4 LT |
620 | #ifdef CONFIG_IDE_TASK_IOCTL |
621 | case HDIO_DRIVE_TASKFILE: | |
622 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
623 | return -EACCES; | |
624 | switch(drive->media) { | |
625 | case ide_disk: | |
626 | return ide_taskfile_ioctl(drive, cmd, arg); | |
627 | default: | |
628 | return -ENOMSG; | |
629 | } | |
630 | #endif /* CONFIG_IDE_TASK_IOCTL */ | |
631 | ||
632 | case HDIO_DRIVE_CMD: | |
633 | if (!capable(CAP_SYS_RAWIO)) | |
634 | return -EACCES; | |
635 | return ide_cmd_ioctl(drive, cmd, arg); | |
636 | ||
637 | case HDIO_DRIVE_TASK: | |
638 | if (!capable(CAP_SYS_RAWIO)) | |
639 | return -EACCES; | |
640 | return ide_task_ioctl(drive, cmd, arg); | |
1da177e4 LT |
641 | case HDIO_SET_NICE: |
642 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; | |
643 | if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1)))) | |
644 | return -EPERM; | |
645 | drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1; | |
646 | drv = *(ide_driver_t **)bdev->bd_disk->private_data; | |
647 | if (drive->dsc_overlap && !drv->supports_dsc_overlap) { | |
648 | drive->dsc_overlap = 0; | |
649 | return -EPERM; | |
650 | } | |
651 | drive->nice1 = (arg >> IDE_NICE_1) & 1; | |
652 | return 0; | |
653 | case HDIO_DRIVE_RESET: | |
dbecebca BZ |
654 | if (!capable(CAP_SYS_ADMIN)) |
655 | return -EACCES; | |
656 | ||
1da177e4 LT |
657 | /* |
658 | * Abort the current command on the | |
659 | * group if there is one, taking | |
660 | * care not to allow anything else | |
661 | * to be queued and to die on the | |
662 | * spot if we miss one somehow | |
663 | */ | |
664 | ||
665 | spin_lock_irqsave(&ide_lock, flags); | |
666 | ||
913759ac AC |
667 | if (HWGROUP(drive)->resetting) { |
668 | spin_unlock_irqrestore(&ide_lock, flags); | |
669 | return -EBUSY; | |
670 | } | |
671 | ||
1da177e4 LT |
672 | ide_abort(drive, "drive reset"); |
673 | ||
125e1874 | 674 | BUG_ON(HWGROUP(drive)->handler); |
dbecebca | 675 | |
1da177e4 LT |
676 | /* Ensure nothing gets queued after we |
677 | drop the lock. Reset will clear the busy */ | |
dbecebca | 678 | |
1da177e4 LT |
679 | HWGROUP(drive)->busy = 1; |
680 | spin_unlock_irqrestore(&ide_lock, flags); | |
681 | (void) ide_do_reset(drive); | |
682 | ||
683 | return 0; | |
1da177e4 LT |
684 | case HDIO_GET_BUSSTATE: |
685 | if (!capable(CAP_SYS_ADMIN)) | |
686 | return -EACCES; | |
687 | if (put_user(HWIF(drive)->bus_state, (long __user *)arg)) | |
688 | return -EFAULT; | |
689 | return 0; | |
690 | ||
691 | case HDIO_SET_BUSSTATE: | |
692 | if (!capable(CAP_SYS_ADMIN)) | |
693 | return -EACCES; | |
1da177e4 LT |
694 | return -EOPNOTSUPP; |
695 | default: | |
696 | return -EINVAL; | |
697 | } | |
1497943e BZ |
698 | |
699 | read_val: | |
f9383c42 | 700 | mutex_lock(&ide_setting_mtx); |
1497943e BZ |
701 | spin_lock_irqsave(&ide_lock, flags); |
702 | err = *val; | |
703 | spin_unlock_irqrestore(&ide_lock, flags); | |
f9383c42 | 704 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
705 | return err >= 0 ? put_user(err, (long __user *)arg) : err; |
706 | ||
707 | set_val: | |
708 | if (bdev != bdev->bd_contains) | |
709 | err = -EINVAL; | |
710 | else { | |
711 | if (!capable(CAP_SYS_ADMIN)) | |
712 | err = -EACCES; | |
713 | else { | |
f9383c42 | 714 | mutex_lock(&ide_setting_mtx); |
1497943e | 715 | err = setfunc(drive, arg); |
f9383c42 | 716 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
717 | } |
718 | } | |
719 | return err; | |
1da177e4 LT |
720 | } |
721 | ||
722 | EXPORT_SYMBOL(generic_ide_ioctl); | |
723 | ||
724 | /* | |
725 | * stridx() returns the offset of c within s, | |
726 | * or -1 if c is '\0' or not found within s. | |
727 | */ | |
728 | static int __init stridx (const char *s, char c) | |
729 | { | |
730 | char *i = strchr(s, c); | |
731 | return (i && c) ? i - s : -1; | |
732 | } | |
733 | ||
734 | /* | |
735 | * match_parm() does parsing for ide_setup(): | |
736 | * | |
737 | * 1. the first char of s must be '='. | |
738 | * 2. if the remainder matches one of the supplied keywords, | |
739 | * the index (1 based) of the keyword is negated and returned. | |
740 | * 3. if the remainder is a series of no more than max_vals numbers | |
741 | * separated by commas, the numbers are saved in vals[] and a | |
742 | * count of how many were saved is returned. Base10 is assumed, | |
743 | * and base16 is allowed when prefixed with "0x". | |
744 | * 4. otherwise, zero is returned. | |
745 | */ | |
746 | static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals) | |
747 | { | |
748 | static const char *decimal = "0123456789"; | |
749 | static const char *hex = "0123456789abcdef"; | |
750 | int i, n; | |
751 | ||
752 | if (*s++ == '=') { | |
753 | /* | |
754 | * Try matching against the supplied keywords, | |
755 | * and return -(index+1) if we match one | |
756 | */ | |
757 | if (keywords != NULL) { | |
758 | for (i = 0; *keywords != NULL; ++i) { | |
759 | if (!strcmp(s, *keywords++)) | |
760 | return -(i+1); | |
761 | } | |
762 | } | |
763 | /* | |
764 | * Look for a series of no more than "max_vals" | |
765 | * numeric values separated by commas, in base10, | |
766 | * or base16 when prefixed with "0x". | |
767 | * Return a count of how many were found. | |
768 | */ | |
769 | for (n = 0; (i = stridx(decimal, *s)) >= 0;) { | |
770 | vals[n] = i; | |
771 | while ((i = stridx(decimal, *++s)) >= 0) | |
772 | vals[n] = (vals[n] * 10) + i; | |
773 | if (*s == 'x' && !vals[n]) { | |
774 | while ((i = stridx(hex, *++s)) >= 0) | |
775 | vals[n] = (vals[n] * 0x10) + i; | |
776 | } | |
777 | if (++n == max_vals) | |
778 | break; | |
779 | if (*s == ',' || *s == ';') | |
780 | ++s; | |
781 | } | |
782 | if (!*s) | |
783 | return n; | |
784 | } | |
785 | return 0; /* zero = nothing matched */ | |
786 | } | |
787 | ||
1da177e4 LT |
788 | /* |
789 | * ide_setup() gets called VERY EARLY during initialization, | |
790 | * to handle kernel "command line" strings beginning with "hdx=" or "ide". | |
791 | * | |
1c10e938 | 792 | * Remember to update Documentation/ide/ide.txt if you change something here. |
1da177e4 LT |
793 | */ |
794 | static int __init ide_setup(char *s) | |
795 | { | |
1da177e4 LT |
796 | ide_hwif_t *hwif; |
797 | ide_drive_t *drive; | |
798 | unsigned int hw, unit; | |
ef87f8d0 | 799 | int vals[3]; |
1da177e4 | 800 | const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1); |
1da177e4 | 801 | |
1da177e4 LT |
802 | if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */ |
803 | return 0; /* driver and not us */ | |
804 | ||
30e5ee4d | 805 | if (strncmp(s, "ide", 3) && strncmp(s, "hd", 2)) |
1da177e4 LT |
806 | return 0; |
807 | ||
808 | printk(KERN_INFO "ide_setup: %s", s); | |
809 | init_ide_data (); | |
810 | ||
811 | #ifdef CONFIG_BLK_DEV_IDEDOUBLER | |
812 | if (!strcmp(s, "ide=doubler")) { | |
813 | extern int ide_doubler; | |
814 | ||
815 | printk(" : Enabled support for IDE doublers\n"); | |
816 | ide_doubler = 1; | |
9dcba7f2 | 817 | goto obsolete_option; |
1da177e4 LT |
818 | } |
819 | #endif /* CONFIG_BLK_DEV_IDEDOUBLER */ | |
820 | ||
821 | if (!strcmp(s, "ide=nodma")) { | |
822 | printk(" : Prevented DMA\n"); | |
823 | noautodma = 1; | |
c223701c | 824 | goto obsolete_option; |
1da177e4 LT |
825 | } |
826 | ||
e3a59b4d HR |
827 | #ifdef CONFIG_BLK_DEV_IDEACPI |
828 | if (!strcmp(s, "ide=noacpi")) { | |
829 | //printk(" : Disable IDE ACPI support.\n"); | |
830 | ide_noacpi = 1; | |
1dbfeb4b | 831 | goto obsolete_option; |
e3a59b4d HR |
832 | } |
833 | if (!strcmp(s, "ide=acpigtf")) { | |
834 | //printk(" : Enable IDE ACPI _GTF support.\n"); | |
1dbfeb4b BZ |
835 | ide_acpigtf = 1; |
836 | goto obsolete_option; | |
e3a59b4d HR |
837 | } |
838 | if (!strcmp(s, "ide=acpionboot")) { | |
839 | //printk(" : Call IDE ACPI methods on boot.\n"); | |
1dbfeb4b BZ |
840 | ide_acpionboot = 1; |
841 | goto obsolete_option; | |
e3a59b4d HR |
842 | } |
843 | #endif /* CONFIG_BLK_DEV_IDEACPI */ | |
844 | ||
1da177e4 LT |
845 | /* |
846 | * Look for drive options: "hdx=" | |
847 | */ | |
848 | if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) { | |
849 | const char *hd_words[] = { | |
c223701c | 850 | "none", "noprobe", "nowerr", "cdrom", "nodma", |
207daeaa | 851 | "-6", "-7", "-8", "-9", "-10", |
36193484 | 852 | "noflush", "remap", "remap63", "scsi", NULL }; |
1da177e4 LT |
853 | unit = s[2] - 'a'; |
854 | hw = unit / MAX_DRIVES; | |
855 | unit = unit % MAX_DRIVES; | |
856 | hwif = &ide_hwifs[hw]; | |
857 | drive = &hwif->drives[unit]; | |
858 | if (strncmp(s + 4, "ide-", 4) == 0) { | |
859 | strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req)); | |
15220d9b | 860 | goto obsolete_option; |
1da177e4 LT |
861 | } |
862 | switch (match_parm(&s[3], hd_words, vals, 3)) { | |
863 | case -1: /* "none" */ | |
864 | case -2: /* "noprobe" */ | |
865 | drive->noprobe = 1; | |
6e87543a | 866 | goto obsolete_option; |
1da177e4 LT |
867 | case -3: /* "nowerr" */ |
868 | drive->bad_wstat = BAD_R_STAT; | |
6e87543a | 869 | goto obsolete_option; |
1da177e4 LT |
870 | case -4: /* "cdrom" */ |
871 | drive->present = 1; | |
872 | drive->media = ide_cdrom; | |
873 | /* an ATAPI device ignores DRDY */ | |
874 | drive->ready_stat = 0; | |
4706a7e0 | 875 | goto obsolete_option; |
c223701c BZ |
876 | case -5: /* nodma */ |
877 | drive->nodma = 1; | |
6e87543a | 878 | goto obsolete_option; |
36193484 JA |
879 | case -11: /* noflush */ |
880 | drive->noflush = 1; | |
6e87543a | 881 | goto obsolete_option; |
1da177e4 LT |
882 | case -12: /* "remap" */ |
883 | drive->remap_0_to_1 = 1; | |
d708c40d | 884 | goto obsolete_option; |
1da177e4 LT |
885 | case -13: /* "remap63" */ |
886 | drive->sect0 = 63; | |
d708c40d | 887 | goto obsolete_option; |
1da177e4 LT |
888 | case -14: /* "scsi" */ |
889 | drive->scsi = 1; | |
15220d9b | 890 | goto obsolete_option; |
1da177e4 LT |
891 | case 3: /* cyl,head,sect */ |
892 | drive->media = ide_disk; | |
893 | drive->ready_stat = READY_STAT; | |
894 | drive->cyl = drive->bios_cyl = vals[0]; | |
895 | drive->head = drive->bios_head = vals[1]; | |
896 | drive->sect = drive->bios_sect = vals[2]; | |
897 | drive->present = 1; | |
898 | drive->forced_geom = 1; | |
4706a7e0 | 899 | goto obsolete_option; |
1da177e4 LT |
900 | default: |
901 | goto bad_option; | |
902 | } | |
903 | } | |
904 | ||
1da177e4 LT |
905 | bad_option: |
906 | printk(" -- BAD OPTION\n"); | |
907 | return 1; | |
908 | obsolete_option: | |
909 | printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n"); | |
910 | return 1; | |
1da177e4 LT |
911 | } |
912 | ||
1da177e4 LT |
913 | EXPORT_SYMBOL(ide_lock); |
914 | ||
8604affd BZ |
915 | static int ide_bus_match(struct device *dev, struct device_driver *drv) |
916 | { | |
917 | return 1; | |
918 | } | |
919 | ||
263756ec KS |
920 | static char *media_string(ide_drive_t *drive) |
921 | { | |
922 | switch (drive->media) { | |
923 | case ide_disk: | |
924 | return "disk"; | |
925 | case ide_cdrom: | |
926 | return "cdrom"; | |
927 | case ide_tape: | |
928 | return "tape"; | |
929 | case ide_floppy: | |
930 | return "floppy"; | |
a7a832de DK |
931 | case ide_optical: |
932 | return "optical"; | |
263756ec KS |
933 | default: |
934 | return "UNKNOWN"; | |
935 | } | |
936 | } | |
937 | ||
938 | static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf) | |
939 | { | |
940 | ide_drive_t *drive = to_ide_device(dev); | |
941 | return sprintf(buf, "%s\n", media_string(drive)); | |
942 | } | |
943 | ||
944 | static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf) | |
945 | { | |
946 | ide_drive_t *drive = to_ide_device(dev); | |
947 | return sprintf(buf, "%s\n", drive->name); | |
948 | } | |
949 | ||
950 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) | |
951 | { | |
952 | ide_drive_t *drive = to_ide_device(dev); | |
953 | return sprintf(buf, "ide:m-%s\n", media_string(drive)); | |
954 | } | |
955 | ||
e11b9035 BZ |
956 | static ssize_t model_show(struct device *dev, struct device_attribute *attr, |
957 | char *buf) | |
958 | { | |
959 | ide_drive_t *drive = to_ide_device(dev); | |
960 | return sprintf(buf, "%s\n", drive->id->model); | |
961 | } | |
962 | ||
963 | static ssize_t firmware_show(struct device *dev, struct device_attribute *attr, | |
964 | char *buf) | |
965 | { | |
966 | ide_drive_t *drive = to_ide_device(dev); | |
967 | return sprintf(buf, "%s\n", drive->id->fw_rev); | |
968 | } | |
969 | ||
970 | static ssize_t serial_show(struct device *dev, struct device_attribute *attr, | |
971 | char *buf) | |
972 | { | |
973 | ide_drive_t *drive = to_ide_device(dev); | |
974 | return sprintf(buf, "%s\n", drive->id->serial_no); | |
975 | } | |
976 | ||
263756ec KS |
977 | static struct device_attribute ide_dev_attrs[] = { |
978 | __ATTR_RO(media), | |
979 | __ATTR_RO(drivename), | |
980 | __ATTR_RO(modalias), | |
e11b9035 BZ |
981 | __ATTR_RO(model), |
982 | __ATTR_RO(firmware), | |
983 | __ATTR(serial, 0400, serial_show, NULL), | |
263756ec KS |
984 | __ATTR_NULL |
985 | }; | |
986 | ||
7eff2e7a | 987 | static int ide_uevent(struct device *dev, struct kobj_uevent_env *env) |
263756ec KS |
988 | { |
989 | ide_drive_t *drive = to_ide_device(dev); | |
7eff2e7a KS |
990 | |
991 | add_uevent_var(env, "MEDIA=%s", media_string(drive)); | |
992 | add_uevent_var(env, "DRIVENAME=%s", drive->name); | |
993 | add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive)); | |
263756ec KS |
994 | return 0; |
995 | } | |
996 | ||
4031bbe4 RK |
997 | static int generic_ide_probe(struct device *dev) |
998 | { | |
999 | ide_drive_t *drive = to_ide_device(dev); | |
1000 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1001 | ||
1002 | return drv->probe ? drv->probe(drive) : -ENODEV; | |
1003 | } | |
1004 | ||
1005 | static int generic_ide_remove(struct device *dev) | |
1006 | { | |
1007 | ide_drive_t *drive = to_ide_device(dev); | |
1008 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1009 | ||
1010 | if (drv->remove) | |
1011 | drv->remove(drive); | |
1012 | ||
1013 | return 0; | |
1014 | } | |
1015 | ||
1016 | static void generic_ide_shutdown(struct device *dev) | |
1017 | { | |
1018 | ide_drive_t *drive = to_ide_device(dev); | |
1019 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1020 | ||
1021 | if (dev->driver && drv->shutdown) | |
1022 | drv->shutdown(drive); | |
1023 | } | |
1024 | ||
1da177e4 LT |
1025 | struct bus_type ide_bus_type = { |
1026 | .name = "ide", | |
8604affd | 1027 | .match = ide_bus_match, |
263756ec | 1028 | .uevent = ide_uevent, |
4031bbe4 RK |
1029 | .probe = generic_ide_probe, |
1030 | .remove = generic_ide_remove, | |
1031 | .shutdown = generic_ide_shutdown, | |
263756ec | 1032 | .dev_attrs = ide_dev_attrs, |
1da177e4 LT |
1033 | .suspend = generic_ide_suspend, |
1034 | .resume = generic_ide_resume, | |
1035 | }; | |
1036 | ||
8604affd BZ |
1037 | EXPORT_SYMBOL_GPL(ide_bus_type); |
1038 | ||
ebae41a5 BZ |
1039 | int ide_vlb_clk; |
1040 | EXPORT_SYMBOL_GPL(ide_vlb_clk); | |
1041 | ||
1042 | module_param_named(vlb_clock, ide_vlb_clk, int, 0); | |
1043 | MODULE_PARM_DESC(vlb_clock, "VLB clock frequency (in MHz)"); | |
1044 | ||
1045 | int ide_pci_clk; | |
1046 | EXPORT_SYMBOL_GPL(ide_pci_clk); | |
1047 | ||
1048 | module_param_named(pci_clock, ide_pci_clk, int, 0); | |
1049 | MODULE_PARM_DESC(pci_clock, "PCI bus clock frequency (in MHz)"); | |
1050 | ||
6e87543a BZ |
1051 | static int ide_set_dev_param_mask(const char *s, struct kernel_param *kp) |
1052 | { | |
1053 | int a, b, i, j = 1; | |
1054 | unsigned int *dev_param_mask = (unsigned int *)kp->arg; | |
1055 | ||
1056 | if (sscanf(s, "%d.%d:%d", &a, &b, &j) != 3 && | |
1057 | sscanf(s, "%d.%d", &a, &b) != 2) | |
1058 | return -EINVAL; | |
1059 | ||
1060 | i = a * MAX_DRIVES + b; | |
1061 | ||
1062 | if (i >= MAX_HWIFS * MAX_DRIVES || j < 0 || j > 1) | |
1063 | return -EINVAL; | |
1064 | ||
1065 | if (j) | |
1066 | *dev_param_mask |= (1 << i); | |
1067 | else | |
1068 | *dev_param_mask &= (1 << i); | |
1069 | ||
1070 | return 0; | |
1071 | } | |
1072 | ||
1073 | static unsigned int ide_nodma; | |
1074 | ||
1075 | module_param_call(nodma, ide_set_dev_param_mask, NULL, &ide_nodma, 0); | |
1076 | MODULE_PARM_DESC(nodma, "disallow DMA for a device"); | |
1077 | ||
1078 | static unsigned int ide_noflush; | |
1079 | ||
1080 | module_param_call(noflush, ide_set_dev_param_mask, NULL, &ide_noflush, 0); | |
1081 | MODULE_PARM_DESC(noflush, "disable flush requests for a device"); | |
1082 | ||
1083 | static unsigned int ide_noprobe; | |
1084 | ||
1085 | module_param_call(noprobe, ide_set_dev_param_mask, NULL, &ide_noprobe, 0); | |
1086 | MODULE_PARM_DESC(noprobe, "skip probing for a device"); | |
1087 | ||
1088 | static unsigned int ide_nowerr; | |
1089 | ||
1090 | module_param_call(nowerr, ide_set_dev_param_mask, NULL, &ide_nowerr, 0); | |
1091 | MODULE_PARM_DESC(nowerr, "ignore the WRERR_STAT bit for a device"); | |
1092 | ||
4706a7e0 BZ |
1093 | static unsigned int ide_cdroms; |
1094 | ||
1095 | module_param_call(cdrom, ide_set_dev_param_mask, NULL, &ide_cdroms, 0); | |
1096 | MODULE_PARM_DESC(cdrom, "force device as a CD-ROM"); | |
1097 | ||
1098 | struct chs_geom { | |
1099 | unsigned int cyl; | |
1100 | u8 head; | |
1101 | u8 sect; | |
1102 | }; | |
1103 | ||
1104 | static unsigned int ide_disks; | |
1105 | static struct chs_geom ide_disks_chs[MAX_HWIFS * MAX_DRIVES]; | |
1106 | ||
1107 | static int ide_set_disk_chs(const char *str, struct kernel_param *kp) | |
1108 | { | |
1109 | int a, b, c = 0, h = 0, s = 0, i, j = 1; | |
1110 | ||
1111 | if (sscanf(str, "%d.%d:%d,%d,%d", &a, &b, &c, &h, &s) != 5 && | |
1112 | sscanf(str, "%d.%d:%d", &a, &b, &j) != 3) | |
1113 | return -EINVAL; | |
1114 | ||
1115 | i = a * MAX_DRIVES + b; | |
1116 | ||
1117 | if (i >= MAX_HWIFS * MAX_DRIVES || j < 0 || j > 1) | |
1118 | return -EINVAL; | |
1119 | ||
1120 | if (c > INT_MAX || h > 255 || s > 255) | |
1121 | return -EINVAL; | |
1122 | ||
1123 | if (j) | |
1124 | ide_disks |= (1 << i); | |
1125 | else | |
1126 | ide_disks &= (1 << i); | |
1127 | ||
1128 | ide_disks_chs[i].cyl = c; | |
1129 | ide_disks_chs[i].head = h; | |
1130 | ide_disks_chs[i].sect = s; | |
1131 | ||
1132 | return 0; | |
1133 | } | |
1134 | ||
1135 | module_param_call(chs, ide_set_disk_chs, NULL, NULL, 0); | |
1136 | MODULE_PARM_DESC(chs, "force device as a disk (using CHS)"); | |
1137 | ||
6e87543a BZ |
1138 | static void ide_dev_apply_params(ide_drive_t *drive) |
1139 | { | |
1140 | int i = drive->hwif->index * MAX_DRIVES + drive->select.b.unit; | |
1141 | ||
1142 | if (ide_nodma & (1 << i)) { | |
1143 | printk(KERN_INFO "ide: disallowing DMA for %s\n", drive->name); | |
1144 | drive->nodma = 1; | |
1145 | } | |
1146 | if (ide_noflush & (1 << i)) { | |
1147 | printk(KERN_INFO "ide: disabling flush requests for %s\n", | |
1148 | drive->name); | |
1149 | drive->noflush = 1; | |
1150 | } | |
1151 | if (ide_noprobe & (1 << i)) { | |
1152 | printk(KERN_INFO "ide: skipping probe for %s\n", drive->name); | |
1153 | drive->noprobe = 1; | |
1154 | } | |
1155 | if (ide_nowerr & (1 << i)) { | |
1156 | printk(KERN_INFO "ide: ignoring the WRERR_STAT bit for %s\n", | |
1157 | drive->name); | |
1158 | drive->bad_wstat = BAD_R_STAT; | |
1159 | } | |
4706a7e0 BZ |
1160 | if (ide_cdroms & (1 << i)) { |
1161 | printk(KERN_INFO "ide: forcing %s as a CD-ROM\n", drive->name); | |
1162 | drive->present = 1; | |
1163 | drive->media = ide_cdrom; | |
1164 | /* an ATAPI device ignores DRDY */ | |
1165 | drive->ready_stat = 0; | |
1166 | } | |
1167 | if (ide_disks & (1 << i)) { | |
1168 | drive->cyl = drive->bios_cyl = ide_disks_chs[i].cyl; | |
1169 | drive->head = drive->bios_head = ide_disks_chs[i].head; | |
1170 | drive->sect = drive->bios_sect = ide_disks_chs[i].sect; | |
1171 | drive->forced_geom = 1; | |
1172 | printk(KERN_INFO "ide: forcing %s as a disk (%d/%d/%d)\n", | |
1173 | drive->name, | |
1174 | drive->cyl, drive->head, drive->sect); | |
1175 | drive->present = 1; | |
1176 | drive->media = ide_disk; | |
1177 | drive->ready_stat = READY_STAT; | |
1178 | } | |
6e87543a BZ |
1179 | } |
1180 | ||
9fd91d95 BZ |
1181 | static unsigned int ide_ignore_cable; |
1182 | ||
1183 | static int ide_set_ignore_cable(const char *s, struct kernel_param *kp) | |
1184 | { | |
1185 | int i, j = 1; | |
1186 | ||
1187 | if (sscanf(s, "%d:%d", &i, &j) != 2 && sscanf(s, "%d", &i) != 1) | |
1188 | return -EINVAL; | |
1189 | ||
1190 | if (i >= MAX_HWIFS || j < 0 || j > 1) | |
1191 | return -EINVAL; | |
1192 | ||
1193 | if (j) | |
1194 | ide_ignore_cable |= (1 << i); | |
1195 | else | |
1196 | ide_ignore_cable &= (1 << i); | |
1197 | ||
1198 | return 0; | |
1199 | } | |
1200 | ||
1201 | module_param_call(ignore_cable, ide_set_ignore_cable, NULL, NULL, 0); | |
1202 | MODULE_PARM_DESC(ignore_cable, "ignore cable detection"); | |
1203 | ||
1204 | void ide_port_apply_params(ide_hwif_t *hwif) | |
1205 | { | |
6e87543a BZ |
1206 | int i; |
1207 | ||
9fd91d95 BZ |
1208 | if (ide_ignore_cable & (1 << hwif->index)) { |
1209 | printk(KERN_INFO "ide: ignoring cable detection for %s\n", | |
1210 | hwif->name); | |
1211 | hwif->cbl = ATA_CBL_PATA40_SHORT; | |
1212 | } | |
6e87543a BZ |
1213 | |
1214 | for (i = 0; i < MAX_DRIVES; i++) | |
1215 | ide_dev_apply_params(&hwif->drives[i]); | |
9fd91d95 BZ |
1216 | } |
1217 | ||
1da177e4 LT |
1218 | /* |
1219 | * This is gets invoked once during initialization, to set *everything* up | |
1220 | */ | |
1221 | static int __init ide_init(void) | |
1222 | { | |
349ae23f RD |
1223 | int ret; |
1224 | ||
eba8ff94 | 1225 | printk(KERN_INFO "Uniform Multi-Platform E-IDE driver\n"); |
537f06c5 | 1226 | |
349ae23f RD |
1227 | ret = bus_register(&ide_bus_type); |
1228 | if (ret < 0) { | |
1229 | printk(KERN_WARNING "IDE: bus_register error: %d\n", ret); | |
1230 | return ret; | |
1231 | } | |
1da177e4 | 1232 | |
f74c9141 BZ |
1233 | ide_port_class = class_create(THIS_MODULE, "ide_port"); |
1234 | if (IS_ERR(ide_port_class)) { | |
1235 | ret = PTR_ERR(ide_port_class); | |
1236 | goto out_port_class; | |
1237 | } | |
f74c9141 | 1238 | |
1da177e4 LT |
1239 | init_ide_data(); |
1240 | ||
5cbf79cd | 1241 | proc_ide_create(); |
1da177e4 | 1242 | |
1da177e4 | 1243 | return 0; |
f74c9141 BZ |
1244 | |
1245 | out_port_class: | |
1246 | bus_unregister(&ide_bus_type); | |
1247 | ||
1248 | return ret; | |
1da177e4 LT |
1249 | } |
1250 | ||
1251 | #ifdef MODULE | |
1252 | static char *options = NULL; | |
1253 | module_param(options, charp, 0); | |
1254 | MODULE_LICENSE("GPL"); | |
1255 | ||
1256 | static void __init parse_options (char *line) | |
1257 | { | |
1258 | char *next = line; | |
1259 | ||
1260 | if (line == NULL || !*line) | |
1261 | return; | |
1262 | while ((line = next) != NULL) { | |
1263 | if ((next = strchr(line,' ')) != NULL) | |
1264 | *next++ = 0; | |
1265 | if (!ide_setup(line)) | |
1266 | printk (KERN_INFO "Unknown option '%s'\n", line); | |
1267 | } | |
1268 | } | |
1269 | ||
fbd8ad30 | 1270 | int __init init_module (void) |
1da177e4 LT |
1271 | { |
1272 | parse_options(options); | |
1273 | return ide_init(); | |
1274 | } | |
1275 | ||
eb797227 | 1276 | void __exit cleanup_module (void) |
1da177e4 | 1277 | { |
1da177e4 | 1278 | proc_ide_destroy(); |
1da177e4 | 1279 | |
f74c9141 BZ |
1280 | class_destroy(ide_port_class); |
1281 | ||
1da177e4 LT |
1282 | bus_unregister(&ide_bus_type); |
1283 | } | |
1284 | ||
1285 | #else /* !MODULE */ | |
1286 | ||
1287 | __setup("", ide_setup); | |
1288 | ||
1289 | module_init(ide_init); | |
1290 | ||
1291 | #endif /* MODULE */ |