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 | ||
89 | static int idebus_parameter; /* holds the "idebus=" parameter */ | |
90 | static int system_bus_speed; /* holds what we think is VESA/PCI bus speed */ | |
1da177e4 | 91 | |
ef29888e | 92 | DEFINE_MUTEX(ide_cfg_mtx); |
1da177e4 LT |
93 | __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock); |
94 | ||
1da177e4 | 95 | int noautodma = 0; |
1da177e4 | 96 | |
1da177e4 | 97 | ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */ |
1da177e4 | 98 | |
43514ed1 BZ |
99 | static void ide_port_init_devices_data(ide_hwif_t *); |
100 | ||
1da177e4 LT |
101 | /* |
102 | * Do not even *think* about calling this! | |
103 | */ | |
cbb010c1 | 104 | void ide_init_port_data(ide_hwif_t *hwif, unsigned int index) |
1da177e4 | 105 | { |
1da177e4 LT |
106 | /* bulk initialize hwif & drive info with zeros */ |
107 | memset(hwif, 0, sizeof(ide_hwif_t)); | |
108 | ||
109 | /* fill in any non-zero initial values */ | |
110 | hwif->index = index; | |
111 | hwif->major = ide_hwif_to_major[index]; | |
112 | ||
113 | hwif->name[0] = 'i'; | |
114 | hwif->name[1] = 'd'; | |
115 | hwif->name[2] = 'e'; | |
116 | hwif->name[3] = '0' + index; | |
117 | ||
118 | hwif->bus_state = BUSSTATE_ON; | |
119 | ||
f36d4024 | 120 | init_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
121 | |
122 | default_hwif_iops(hwif); | |
123 | default_hwif_transport(hwif); | |
43514ed1 BZ |
124 | |
125 | ide_port_init_devices_data(hwif); | |
126 | } | |
127 | EXPORT_SYMBOL_GPL(ide_init_port_data); | |
128 | ||
129 | static void ide_port_init_devices_data(ide_hwif_t *hwif) | |
130 | { | |
131 | int unit; | |
132 | ||
1da177e4 LT |
133 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
134 | ide_drive_t *drive = &hwif->drives[unit]; | |
43514ed1 BZ |
135 | u8 j = (hwif->index * MAX_DRIVES) + unit; |
136 | ||
137 | memset(drive, 0, sizeof(*drive)); | |
1da177e4 LT |
138 | |
139 | drive->media = ide_disk; | |
140 | drive->select.all = (unit<<4)|0xa0; | |
141 | drive->hwif = hwif; | |
142 | drive->ctl = 0x08; | |
143 | drive->ready_stat = READY_STAT; | |
144 | drive->bad_wstat = BAD_W_STAT; | |
145 | drive->special.b.recalibrate = 1; | |
146 | drive->special.b.set_geometry = 1; | |
147 | drive->name[0] = 'h'; | |
148 | drive->name[1] = 'd'; | |
43514ed1 | 149 | drive->name[2] = 'a' + j; |
1da177e4 | 150 | drive->max_failures = IDE_DEFAULT_MAX_FAILURES; |
43514ed1 | 151 | |
1da177e4 | 152 | INIT_LIST_HEAD(&drive->list); |
f36d4024 | 153 | init_completion(&drive->gendev_rel_comp); |
1da177e4 LT |
154 | } |
155 | } | |
43514ed1 | 156 | |
1da177e4 LT |
157 | /* |
158 | * init_ide_data() sets reasonable default values into all fields | |
159 | * of all instances of the hwifs and drives, but only on the first call. | |
160 | * Subsequent calls have no effect (they don't wipe out anything). | |
161 | * | |
162 | * This routine is normally called at driver initialization time, | |
163 | * but may also be called MUCH earlier during kernel "command-line" | |
164 | * parameter processing. As such, we cannot depend on any other parts | |
165 | * of the kernel (such as memory allocation) to be functioning yet. | |
166 | * | |
167 | * This is too bad, as otherwise we could dynamically allocate the | |
168 | * ide_drive_t structs as needed, rather than always consuming memory | |
169 | * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them. | |
170 | * | |
171 | * FIXME: We should stuff the setup data into __init and copy the | |
172 | * relevant hwifs/allocate them properly during boot. | |
173 | */ | |
174 | #define MAGIC_COOKIE 0x12345678 | |
175 | static void __init init_ide_data (void) | |
176 | { | |
1da177e4 LT |
177 | unsigned int index; |
178 | static unsigned long magic_cookie = MAGIC_COOKIE; | |
179 | ||
180 | if (magic_cookie != MAGIC_COOKIE) | |
181 | return; /* already initialized */ | |
182 | magic_cookie = 0; | |
183 | ||
184 | /* Initialise all interface structures */ | |
185 | for (index = 0; index < MAX_HWIFS; ++index) { | |
05734266 BZ |
186 | ide_hwif_t *hwif = &ide_hwifs[index]; |
187 | ||
cbb010c1 | 188 | ide_init_port_data(hwif, index); |
1da177e4 | 189 | } |
1da177e4 LT |
190 | } |
191 | ||
192 | /** | |
193 | * ide_system_bus_speed - guess bus speed | |
194 | * | |
195 | * ide_system_bus_speed() returns what we think is the system VESA/PCI | |
196 | * bus speed (in MHz). This is used for calculating interface PIO timings. | |
197 | * The default is 40 for known PCI systems, 50 otherwise. | |
198 | * The "idebus=xx" parameter can be used to override this value. | |
199 | * The actual value to be used is computed/displayed the first time | |
200 | * through. Drivers should only use this as a last resort. | |
201 | * | |
202 | * Returns a guessed speed in MHz. | |
203 | */ | |
204 | ||
205 | static int ide_system_bus_speed(void) | |
206 | { | |
207 | #ifdef CONFIG_PCI | |
208 | static struct pci_device_id pci_default[] = { | |
209 | { PCI_DEVICE(PCI_ANY_ID, PCI_ANY_ID) }, | |
210 | { } | |
211 | }; | |
212 | #else | |
213 | #define pci_default 0 | |
214 | #endif /* CONFIG_PCI */ | |
215 | ||
537f06c5 BZ |
216 | /* user supplied value */ |
217 | if (idebus_parameter) | |
218 | return idebus_parameter; | |
219 | ||
220 | /* safe default value for PCI or VESA and PCI*/ | |
221 | return pci_dev_present(pci_default) ? 33 : 50; | |
1da177e4 LT |
222 | } |
223 | ||
fbd13088 | 224 | void ide_remove_port_from_hwgroup(ide_hwif_t *hwif) |
96e5ad30 BZ |
225 | { |
226 | ide_hwgroup_t *hwgroup = hwif->hwgroup; | |
227 | ||
228 | spin_lock_irq(&ide_lock); | |
229 | /* | |
230 | * Remove us from the hwgroup, and free | |
231 | * the hwgroup if we were the only member | |
232 | */ | |
233 | if (hwif->next == hwif) { | |
234 | BUG_ON(hwgroup->hwif != hwif); | |
235 | kfree(hwgroup); | |
236 | } else { | |
237 | /* There is another interface in hwgroup. | |
238 | * Unlink us, and set hwgroup->drive and ->hwif to | |
239 | * something sane. | |
240 | */ | |
241 | ide_hwif_t *g = hwgroup->hwif; | |
242 | ||
243 | while (g->next != hwif) | |
244 | g = g->next; | |
245 | g->next = hwif->next; | |
246 | if (hwgroup->hwif == hwif) { | |
247 | /* Chose a random hwif for hwgroup->hwif. | |
248 | * It's guaranteed that there are no drives | |
249 | * left in the hwgroup. | |
250 | */ | |
251 | BUG_ON(hwgroup->drive != NULL); | |
252 | hwgroup->hwif = g; | |
253 | } | |
254 | BUG_ON(hwgroup->hwif == hwif); | |
255 | } | |
256 | spin_unlock_irq(&ide_lock); | |
257 | } | |
258 | ||
71bf9f6f | 259 | /* Called with ide_lock held. */ |
2dde7861 | 260 | static void __ide_port_unregister_devices(ide_hwif_t *hwif) |
71bf9f6f BZ |
261 | { |
262 | int i; | |
263 | ||
264 | for (i = 0; i < MAX_DRIVES; i++) { | |
265 | ide_drive_t *drive = &hwif->drives[i]; | |
266 | ||
267 | if (drive->present) { | |
268 | spin_unlock_irq(&ide_lock); | |
269 | device_unregister(&drive->gendev); | |
270 | wait_for_completion(&drive->gendev_rel_comp); | |
271 | spin_lock_irq(&ide_lock); | |
272 | } | |
273 | } | |
274 | } | |
275 | ||
2dde7861 BZ |
276 | void ide_port_unregister_devices(ide_hwif_t *hwif) |
277 | { | |
278 | mutex_lock(&ide_cfg_mtx); | |
279 | spin_lock_irq(&ide_lock); | |
280 | __ide_port_unregister_devices(hwif); | |
281 | hwif->present = 0; | |
282 | ide_port_init_devices_data(hwif); | |
283 | spin_unlock_irq(&ide_lock); | |
284 | mutex_unlock(&ide_cfg_mtx); | |
285 | } | |
286 | EXPORT_SYMBOL_GPL(ide_port_unregister_devices); | |
287 | ||
1da177e4 | 288 | /** |
020e322d | 289 | * ide_unregister - free an IDE interface |
1da177e4 LT |
290 | * @index: index of interface (will change soon to a pointer) |
291 | * | |
292 | * Perform the final unregister of an IDE interface. At the moment | |
293 | * we don't refcount interfaces so this will also get split up. | |
294 | * | |
295 | * Locking: | |
296 | * The caller must not hold the IDE locks | |
297 | * The drive present/vanishing is not yet properly locked | |
298 | * Take care with the callbacks. These have been split to avoid | |
299 | * deadlocking the IDE layer. The shutdown callback is called | |
300 | * before we take the lock and free resources. It is up to the | |
301 | * caller to be sure there is no pending I/O here, and that | |
020e322d SS |
302 | * the interface will not be reopened (present/vanishing locking |
303 | * isn't yet done BTW). After we commit to the final kill we | |
1da177e4 LT |
304 | * call the cleanup callback with the ide locks held. |
305 | * | |
306 | * Unregister restores the hwif structures to the default state. | |
307 | * This is raving bonkers. | |
308 | */ | |
309 | ||
93de00fd | 310 | void ide_unregister(unsigned int index) |
1da177e4 | 311 | { |
1da177e4 | 312 | ide_hwif_t *hwif, *g; |
1da177e4 | 313 | ide_hwgroup_t *hwgroup; |
71bf9f6f | 314 | int irq_count = 0; |
1da177e4 LT |
315 | |
316 | BUG_ON(index >= MAX_HWIFS); | |
317 | ||
318 | BUG_ON(in_interrupt()); | |
319 | BUG_ON(irqs_disabled()); | |
ef29888e | 320 | mutex_lock(&ide_cfg_mtx); |
1da177e4 LT |
321 | spin_lock_irq(&ide_lock); |
322 | hwif = &ide_hwifs[index]; | |
323 | if (!hwif->present) | |
324 | goto abort; | |
2dde7861 | 325 | __ide_port_unregister_devices(hwif); |
1da177e4 LT |
326 | hwif->present = 0; |
327 | ||
328 | spin_unlock_irq(&ide_lock); | |
329 | ||
5cbf79cd | 330 | ide_proc_unregister_port(hwif); |
1da177e4 LT |
331 | |
332 | hwgroup = hwif->hwgroup; | |
333 | /* | |
334 | * free the irq if we were the only hwif using it | |
335 | */ | |
336 | g = hwgroup->hwif; | |
337 | do { | |
338 | if (g->irq == hwif->irq) | |
339 | ++irq_count; | |
340 | g = g->next; | |
341 | } while (g != hwgroup->hwif); | |
342 | if (irq_count == 1) | |
343 | free_irq(hwif->irq, hwgroup); | |
344 | ||
96e5ad30 | 345 | ide_remove_port_from_hwgroup(hwif); |
1da177e4 | 346 | |
f74c9141 | 347 | device_unregister(hwif->portdev); |
1da177e4 | 348 | device_unregister(&hwif->gendev); |
f36d4024 | 349 | wait_for_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
350 | |
351 | /* | |
352 | * Remove us from the kernel's knowledge | |
353 | */ | |
354 | blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); | |
355 | kfree(hwif->sg_table); | |
356 | unregister_blkdev(hwif->major, hwif->name); | |
357 | spin_lock_irq(&ide_lock); | |
358 | ||
93de00fd | 359 | if (hwif->dma_base) |
0d1bad21 | 360 | ide_release_dma_engine(hwif); |
1da177e4 | 361 | |
1da177e4 | 362 | /* restore hwif data to pristine status */ |
cbb010c1 | 363 | ide_init_port_data(hwif, index); |
1da177e4 | 364 | |
1da177e4 LT |
365 | abort: |
366 | spin_unlock_irq(&ide_lock); | |
ef29888e | 367 | mutex_unlock(&ide_cfg_mtx); |
1da177e4 LT |
368 | } |
369 | ||
370 | EXPORT_SYMBOL(ide_unregister); | |
371 | ||
57c802e8 BZ |
372 | void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw) |
373 | { | |
374 | memcpy(hwif->io_ports, hw->io_ports, sizeof(hwif->io_ports)); | |
375 | hwif->irq = hw->irq; | |
57c802e8 BZ |
376 | hwif->chipset = hw->chipset; |
377 | hwif->gendev.parent = hw->dev; | |
378 | hwif->ack_intr = hw->ack_intr; | |
379 | } | |
380 | EXPORT_SYMBOL_GPL(ide_init_port_hw); | |
381 | ||
1da177e4 LT |
382 | /* |
383 | * Locks for IDE setting functionality | |
384 | */ | |
385 | ||
f9383c42 | 386 | DEFINE_MUTEX(ide_setting_mtx); |
1da177e4 | 387 | |
f9383c42 | 388 | EXPORT_SYMBOL_GPL(ide_setting_mtx); |
1497943e | 389 | |
1da177e4 LT |
390 | /** |
391 | * ide_spin_wait_hwgroup - wait for group | |
392 | * @drive: drive in the group | |
393 | * | |
394 | * Wait for an IDE device group to go non busy and then return | |
395 | * holding the ide_lock which guards the hwgroup->busy status | |
396 | * and right to use it. | |
397 | */ | |
398 | ||
399 | int ide_spin_wait_hwgroup (ide_drive_t *drive) | |
400 | { | |
401 | ide_hwgroup_t *hwgroup = HWGROUP(drive); | |
402 | unsigned long timeout = jiffies + (3 * HZ); | |
403 | ||
404 | spin_lock_irq(&ide_lock); | |
405 | ||
406 | while (hwgroup->busy) { | |
407 | unsigned long lflags; | |
408 | spin_unlock_irq(&ide_lock); | |
409 | local_irq_set(lflags); | |
410 | if (time_after(jiffies, timeout)) { | |
411 | local_irq_restore(lflags); | |
412 | printk(KERN_ERR "%s: channel busy\n", drive->name); | |
413 | return -EBUSY; | |
414 | } | |
415 | local_irq_restore(lflags); | |
416 | spin_lock_irq(&ide_lock); | |
417 | } | |
418 | return 0; | |
419 | } | |
420 | ||
421 | EXPORT_SYMBOL(ide_spin_wait_hwgroup); | |
422 | ||
7662d046 | 423 | int set_io_32bit(ide_drive_t *drive, int arg) |
1da177e4 | 424 | { |
1497943e BZ |
425 | if (drive->no_io_32bit) |
426 | return -EPERM; | |
427 | ||
428 | if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1)) | |
429 | return -EINVAL; | |
430 | ||
644a9d76 BZ |
431 | if (ide_spin_wait_hwgroup(drive)) |
432 | return -EBUSY; | |
433 | ||
1da177e4 | 434 | drive->io_32bit = arg; |
644a9d76 BZ |
435 | |
436 | spin_unlock_irq(&ide_lock); | |
437 | ||
1da177e4 LT |
438 | return 0; |
439 | } | |
440 | ||
1497943e BZ |
441 | static int set_ksettings(ide_drive_t *drive, int arg) |
442 | { | |
443 | if (arg < 0 || arg > 1) | |
444 | return -EINVAL; | |
445 | ||
446 | if (ide_spin_wait_hwgroup(drive)) | |
447 | return -EBUSY; | |
448 | drive->keep_settings = arg; | |
449 | spin_unlock_irq(&ide_lock); | |
450 | ||
451 | return 0; | |
452 | } | |
453 | ||
7662d046 | 454 | int set_using_dma(ide_drive_t *drive, int arg) |
1da177e4 LT |
455 | { |
456 | #ifdef CONFIG_BLK_DEV_IDEDMA | |
87996204 BZ |
457 | ide_hwif_t *hwif = drive->hwif; |
458 | int err = -EPERM; | |
459 | ||
1497943e BZ |
460 | if (arg < 0 || arg > 1) |
461 | return -EINVAL; | |
462 | ||
1da177e4 | 463 | if (!drive->id || !(drive->id->capability & 1)) |
87996204 BZ |
464 | goto out; |
465 | ||
5e37bdc0 | 466 | if (hwif->dma_ops == NULL) |
87996204 BZ |
467 | goto out; |
468 | ||
469 | err = -EBUSY; | |
470 | if (ide_spin_wait_hwgroup(drive)) | |
471 | goto out; | |
472 | /* | |
473 | * set ->busy flag, unlock and let it ride | |
474 | */ | |
475 | hwif->hwgroup->busy = 1; | |
476 | spin_unlock_irq(&ide_lock); | |
477 | ||
478 | err = 0; | |
479 | ||
1da177e4 | 480 | if (arg) { |
23b1bd45 | 481 | if (ide_set_dma(drive)) |
87996204 | 482 | err = -EIO; |
7469aaf6 BZ |
483 | } else |
484 | ide_dma_off(drive); | |
87996204 BZ |
485 | |
486 | /* | |
487 | * lock, clear ->busy flag and unlock before leaving | |
488 | */ | |
489 | spin_lock_irq(&ide_lock); | |
490 | hwif->hwgroup->busy = 0; | |
491 | spin_unlock_irq(&ide_lock); | |
492 | out: | |
493 | return err; | |
1da177e4 | 494 | #else |
1497943e BZ |
495 | if (arg < 0 || arg > 1) |
496 | return -EINVAL; | |
497 | ||
1da177e4 LT |
498 | return -EPERM; |
499 | #endif | |
500 | } | |
501 | ||
7662d046 | 502 | int set_pio_mode(ide_drive_t *drive, int arg) |
1da177e4 LT |
503 | { |
504 | struct request rq; | |
784506cb | 505 | ide_hwif_t *hwif = drive->hwif; |
ac95beed | 506 | const struct ide_port_ops *port_ops = hwif->port_ops; |
1da177e4 | 507 | |
1497943e BZ |
508 | if (arg < 0 || arg > 255) |
509 | return -EINVAL; | |
510 | ||
ac95beed | 511 | if (port_ops == NULL || port_ops->set_pio_mode == NULL || |
784506cb | 512 | (hwif->host_flags & IDE_HFLAG_NO_SET_MODE)) |
1da177e4 | 513 | return -ENOSYS; |
26bcb879 | 514 | |
1da177e4 LT |
515 | if (drive->special.b.set_tune) |
516 | return -EBUSY; | |
145b75e9 | 517 | |
1da177e4 | 518 | ide_init_drive_cmd(&rq); |
852738f3 | 519 | rq.cmd_type = REQ_TYPE_ATA_TASKFILE; |
145b75e9 | 520 | |
1da177e4 LT |
521 | drive->tune_req = (u8) arg; |
522 | drive->special.b.set_tune = 1; | |
523 | (void) ide_do_drive_cmd(drive, &rq, ide_wait); | |
524 | return 0; | |
525 | } | |
526 | ||
1497943e BZ |
527 | static int set_unmaskirq(ide_drive_t *drive, int arg) |
528 | { | |
529 | if (drive->no_unmask) | |
530 | return -EPERM; | |
531 | ||
532 | if (arg < 0 || arg > 1) | |
533 | return -EINVAL; | |
534 | ||
535 | if (ide_spin_wait_hwgroup(drive)) | |
536 | return -EBUSY; | |
537 | drive->unmask = arg; | |
538 | spin_unlock_irq(&ide_lock); | |
539 | ||
540 | return 0; | |
541 | } | |
542 | ||
1da177e4 LT |
543 | /** |
544 | * system_bus_clock - clock guess | |
545 | * | |
546 | * External version of the bus clock guess used by very old IDE drivers | |
547 | * for things like VLB timings. Should not be used. | |
548 | */ | |
549 | ||
550 | int system_bus_clock (void) | |
551 | { | |
537f06c5 | 552 | return system_bus_speed; |
1da177e4 LT |
553 | } |
554 | ||
555 | EXPORT_SYMBOL(system_bus_clock); | |
556 | ||
b887d2e6 | 557 | static int generic_ide_suspend(struct device *dev, pm_message_t mesg) |
1da177e4 LT |
558 | { |
559 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 560 | ide_hwif_t *hwif = HWIF(drive); |
1da177e4 LT |
561 | struct request rq; |
562 | struct request_pm_state rqpm; | |
563 | ide_task_t args; | |
5e32132b | 564 | int ret; |
1da177e4 | 565 | |
e3a59b4d HR |
566 | /* Call ACPI _GTM only once */ |
567 | if (!(drive->dn % 2)) | |
568 | ide_acpi_get_timing(hwif); | |
569 | ||
1da177e4 LT |
570 | memset(&rq, 0, sizeof(rq)); |
571 | memset(&rqpm, 0, sizeof(rqpm)); | |
572 | memset(&args, 0, sizeof(args)); | |
4aff5e23 | 573 | rq.cmd_type = REQ_TYPE_PM_SUSPEND; |
1da177e4 | 574 | rq.special = &args; |
c00895ab | 575 | rq.data = &rqpm; |
1da177e4 | 576 | rqpm.pm_step = ide_pm_state_start_suspend; |
b887d2e6 DB |
577 | if (mesg.event == PM_EVENT_PRETHAW) |
578 | mesg.event = PM_EVENT_FREEZE; | |
579 | rqpm.pm_state = mesg.event; | |
1da177e4 | 580 | |
5e32132b SL |
581 | ret = ide_do_drive_cmd(drive, &rq, ide_wait); |
582 | /* only call ACPI _PS3 after both drivers are suspended */ | |
583 | if (!ret && (((drive->dn % 2) && hwif->drives[0].present | |
584 | && hwif->drives[1].present) | |
585 | || !hwif->drives[0].present | |
586 | || !hwif->drives[1].present)) | |
587 | ide_acpi_set_state(hwif, 0); | |
588 | return ret; | |
1da177e4 LT |
589 | } |
590 | ||
591 | static int generic_ide_resume(struct device *dev) | |
592 | { | |
593 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 594 | ide_hwif_t *hwif = HWIF(drive); |
1da177e4 LT |
595 | struct request rq; |
596 | struct request_pm_state rqpm; | |
597 | ide_task_t args; | |
0d2157f7 | 598 | int err; |
1da177e4 | 599 | |
e3a59b4d | 600 | /* Call ACPI _STM only once */ |
5e32132b SL |
601 | if (!(drive->dn % 2)) { |
602 | ide_acpi_set_state(hwif, 1); | |
e3a59b4d | 603 | ide_acpi_push_timing(hwif); |
5e32132b | 604 | } |
e3a59b4d HR |
605 | |
606 | ide_acpi_exec_tfs(drive); | |
607 | ||
1da177e4 LT |
608 | memset(&rq, 0, sizeof(rq)); |
609 | memset(&rqpm, 0, sizeof(rqpm)); | |
610 | memset(&args, 0, sizeof(args)); | |
4aff5e23 | 611 | rq.cmd_type = REQ_TYPE_PM_RESUME; |
1da177e4 | 612 | rq.special = &args; |
c00895ab | 613 | rq.data = &rqpm; |
1da177e4 | 614 | rqpm.pm_step = ide_pm_state_start_resume; |
ca078bae | 615 | rqpm.pm_state = PM_EVENT_ON; |
1da177e4 | 616 | |
0d2157f7 LT |
617 | err = ide_do_drive_cmd(drive, &rq, ide_head_wait); |
618 | ||
ce9b2b0a RW |
619 | if (err == 0 && dev->driver) { |
620 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
621 | ||
622 | if (drv->resume) | |
623 | drv->resume(drive); | |
624 | } | |
0d2157f7 LT |
625 | |
626 | return err; | |
1da177e4 LT |
627 | } |
628 | ||
629 | int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, | |
630 | unsigned int cmd, unsigned long arg) | |
631 | { | |
1497943e | 632 | unsigned long flags; |
1da177e4 | 633 | ide_driver_t *drv; |
1da177e4 | 634 | void __user *p = (void __user *)arg; |
1985026d | 635 | int err = 0, (*setfunc)(ide_drive_t *, int); |
1497943e | 636 | u8 *val; |
1da177e4 | 637 | |
1497943e BZ |
638 | switch (cmd) { |
639 | case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val; | |
640 | case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val; | |
641 | case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val; | |
642 | case HDIO_GET_DMA: val = &drive->using_dma; goto read_val; | |
643 | case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val; | |
644 | case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val; | |
645 | case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val; | |
646 | case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val; | |
647 | case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val; | |
1da177e4 | 648 | } |
1da177e4 LT |
649 | |
650 | switch (cmd) { | |
1da177e4 LT |
651 | case HDIO_OBSOLETE_IDENTITY: |
652 | case HDIO_GET_IDENTITY: | |
653 | if (bdev != bdev->bd_contains) | |
654 | return -EINVAL; | |
655 | if (drive->id_read == 0) | |
656 | return -ENOMSG; | |
657 | if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142)) | |
658 | return -EFAULT; | |
659 | return 0; | |
660 | ||
661 | case HDIO_GET_NICE: | |
662 | return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP | | |
663 | drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP | | |
92b83c8f | 664 | drive->nice1 << IDE_NICE_1, |
1da177e4 | 665 | (long __user *) arg); |
1da177e4 LT |
666 | #ifdef CONFIG_IDE_TASK_IOCTL |
667 | case HDIO_DRIVE_TASKFILE: | |
668 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
669 | return -EACCES; | |
670 | switch(drive->media) { | |
671 | case ide_disk: | |
672 | return ide_taskfile_ioctl(drive, cmd, arg); | |
673 | default: | |
674 | return -ENOMSG; | |
675 | } | |
676 | #endif /* CONFIG_IDE_TASK_IOCTL */ | |
677 | ||
678 | case HDIO_DRIVE_CMD: | |
679 | if (!capable(CAP_SYS_RAWIO)) | |
680 | return -EACCES; | |
681 | return ide_cmd_ioctl(drive, cmd, arg); | |
682 | ||
683 | case HDIO_DRIVE_TASK: | |
684 | if (!capable(CAP_SYS_RAWIO)) | |
685 | return -EACCES; | |
686 | return ide_task_ioctl(drive, cmd, arg); | |
1da177e4 LT |
687 | case HDIO_SET_NICE: |
688 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; | |
689 | if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1)))) | |
690 | return -EPERM; | |
691 | drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1; | |
692 | drv = *(ide_driver_t **)bdev->bd_disk->private_data; | |
693 | if (drive->dsc_overlap && !drv->supports_dsc_overlap) { | |
694 | drive->dsc_overlap = 0; | |
695 | return -EPERM; | |
696 | } | |
697 | drive->nice1 = (arg >> IDE_NICE_1) & 1; | |
698 | return 0; | |
699 | case HDIO_DRIVE_RESET: | |
dbecebca BZ |
700 | if (!capable(CAP_SYS_ADMIN)) |
701 | return -EACCES; | |
702 | ||
1da177e4 LT |
703 | /* |
704 | * Abort the current command on the | |
705 | * group if there is one, taking | |
706 | * care not to allow anything else | |
707 | * to be queued and to die on the | |
708 | * spot if we miss one somehow | |
709 | */ | |
710 | ||
711 | spin_lock_irqsave(&ide_lock, flags); | |
712 | ||
913759ac AC |
713 | if (HWGROUP(drive)->resetting) { |
714 | spin_unlock_irqrestore(&ide_lock, flags); | |
715 | return -EBUSY; | |
716 | } | |
717 | ||
1da177e4 LT |
718 | ide_abort(drive, "drive reset"); |
719 | ||
125e1874 | 720 | BUG_ON(HWGROUP(drive)->handler); |
dbecebca | 721 | |
1da177e4 LT |
722 | /* Ensure nothing gets queued after we |
723 | drop the lock. Reset will clear the busy */ | |
dbecebca | 724 | |
1da177e4 LT |
725 | HWGROUP(drive)->busy = 1; |
726 | spin_unlock_irqrestore(&ide_lock, flags); | |
727 | (void) ide_do_reset(drive); | |
728 | ||
729 | return 0; | |
1da177e4 LT |
730 | case HDIO_GET_BUSSTATE: |
731 | if (!capable(CAP_SYS_ADMIN)) | |
732 | return -EACCES; | |
733 | if (put_user(HWIF(drive)->bus_state, (long __user *)arg)) | |
734 | return -EFAULT; | |
735 | return 0; | |
736 | ||
737 | case HDIO_SET_BUSSTATE: | |
738 | if (!capable(CAP_SYS_ADMIN)) | |
739 | return -EACCES; | |
1da177e4 LT |
740 | return -EOPNOTSUPP; |
741 | default: | |
742 | return -EINVAL; | |
743 | } | |
1497943e BZ |
744 | |
745 | read_val: | |
f9383c42 | 746 | mutex_lock(&ide_setting_mtx); |
1497943e BZ |
747 | spin_lock_irqsave(&ide_lock, flags); |
748 | err = *val; | |
749 | spin_unlock_irqrestore(&ide_lock, flags); | |
f9383c42 | 750 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
751 | return err >= 0 ? put_user(err, (long __user *)arg) : err; |
752 | ||
753 | set_val: | |
754 | if (bdev != bdev->bd_contains) | |
755 | err = -EINVAL; | |
756 | else { | |
757 | if (!capable(CAP_SYS_ADMIN)) | |
758 | err = -EACCES; | |
759 | else { | |
f9383c42 | 760 | mutex_lock(&ide_setting_mtx); |
1497943e | 761 | err = setfunc(drive, arg); |
f9383c42 | 762 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
763 | } |
764 | } | |
765 | return err; | |
1da177e4 LT |
766 | } |
767 | ||
768 | EXPORT_SYMBOL(generic_ide_ioctl); | |
769 | ||
770 | /* | |
771 | * stridx() returns the offset of c within s, | |
772 | * or -1 if c is '\0' or not found within s. | |
773 | */ | |
774 | static int __init stridx (const char *s, char c) | |
775 | { | |
776 | char *i = strchr(s, c); | |
777 | return (i && c) ? i - s : -1; | |
778 | } | |
779 | ||
780 | /* | |
781 | * match_parm() does parsing for ide_setup(): | |
782 | * | |
783 | * 1. the first char of s must be '='. | |
784 | * 2. if the remainder matches one of the supplied keywords, | |
785 | * the index (1 based) of the keyword is negated and returned. | |
786 | * 3. if the remainder is a series of no more than max_vals numbers | |
787 | * separated by commas, the numbers are saved in vals[] and a | |
788 | * count of how many were saved is returned. Base10 is assumed, | |
789 | * and base16 is allowed when prefixed with "0x". | |
790 | * 4. otherwise, zero is returned. | |
791 | */ | |
792 | static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals) | |
793 | { | |
794 | static const char *decimal = "0123456789"; | |
795 | static const char *hex = "0123456789abcdef"; | |
796 | int i, n; | |
797 | ||
798 | if (*s++ == '=') { | |
799 | /* | |
800 | * Try matching against the supplied keywords, | |
801 | * and return -(index+1) if we match one | |
802 | */ | |
803 | if (keywords != NULL) { | |
804 | for (i = 0; *keywords != NULL; ++i) { | |
805 | if (!strcmp(s, *keywords++)) | |
806 | return -(i+1); | |
807 | } | |
808 | } | |
809 | /* | |
810 | * Look for a series of no more than "max_vals" | |
811 | * numeric values separated by commas, in base10, | |
812 | * or base16 when prefixed with "0x". | |
813 | * Return a count of how many were found. | |
814 | */ | |
815 | for (n = 0; (i = stridx(decimal, *s)) >= 0;) { | |
816 | vals[n] = i; | |
817 | while ((i = stridx(decimal, *++s)) >= 0) | |
818 | vals[n] = (vals[n] * 10) + i; | |
819 | if (*s == 'x' && !vals[n]) { | |
820 | while ((i = stridx(hex, *++s)) >= 0) | |
821 | vals[n] = (vals[n] * 0x10) + i; | |
822 | } | |
823 | if (++n == max_vals) | |
824 | break; | |
825 | if (*s == ',' || *s == ';') | |
826 | ++s; | |
827 | } | |
828 | if (!*s) | |
829 | return n; | |
830 | } | |
831 | return 0; /* zero = nothing matched */ | |
832 | } | |
833 | ||
1da177e4 LT |
834 | /* |
835 | * ide_setup() gets called VERY EARLY during initialization, | |
836 | * to handle kernel "command line" strings beginning with "hdx=" or "ide". | |
837 | * | |
1c10e938 | 838 | * Remember to update Documentation/ide/ide.txt if you change something here. |
1da177e4 LT |
839 | */ |
840 | static int __init ide_setup(char *s) | |
841 | { | |
1da177e4 LT |
842 | ide_hwif_t *hwif; |
843 | ide_drive_t *drive; | |
844 | unsigned int hw, unit; | |
ef87f8d0 | 845 | int vals[3]; |
1da177e4 | 846 | const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1); |
1da177e4 | 847 | |
1da177e4 LT |
848 | if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */ |
849 | return 0; /* driver and not us */ | |
850 | ||
851 | if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2)) | |
852 | return 0; | |
853 | ||
854 | printk(KERN_INFO "ide_setup: %s", s); | |
855 | init_ide_data (); | |
856 | ||
857 | #ifdef CONFIG_BLK_DEV_IDEDOUBLER | |
858 | if (!strcmp(s, "ide=doubler")) { | |
859 | extern int ide_doubler; | |
860 | ||
861 | printk(" : Enabled support for IDE doublers\n"); | |
862 | ide_doubler = 1; | |
9dcba7f2 | 863 | goto obsolete_option; |
1da177e4 LT |
864 | } |
865 | #endif /* CONFIG_BLK_DEV_IDEDOUBLER */ | |
866 | ||
867 | if (!strcmp(s, "ide=nodma")) { | |
868 | printk(" : Prevented DMA\n"); | |
869 | noautodma = 1; | |
c223701c | 870 | goto obsolete_option; |
1da177e4 LT |
871 | } |
872 | ||
e3a59b4d HR |
873 | #ifdef CONFIG_BLK_DEV_IDEACPI |
874 | if (!strcmp(s, "ide=noacpi")) { | |
875 | //printk(" : Disable IDE ACPI support.\n"); | |
876 | ide_noacpi = 1; | |
1dbfeb4b | 877 | goto obsolete_option; |
e3a59b4d HR |
878 | } |
879 | if (!strcmp(s, "ide=acpigtf")) { | |
880 | //printk(" : Enable IDE ACPI _GTF support.\n"); | |
1dbfeb4b BZ |
881 | ide_acpigtf = 1; |
882 | goto obsolete_option; | |
e3a59b4d HR |
883 | } |
884 | if (!strcmp(s, "ide=acpionboot")) { | |
885 | //printk(" : Call IDE ACPI methods on boot.\n"); | |
1dbfeb4b BZ |
886 | ide_acpionboot = 1; |
887 | goto obsolete_option; | |
e3a59b4d HR |
888 | } |
889 | #endif /* CONFIG_BLK_DEV_IDEACPI */ | |
890 | ||
1da177e4 LT |
891 | /* |
892 | * Look for drive options: "hdx=" | |
893 | */ | |
894 | if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) { | |
895 | const char *hd_words[] = { | |
c223701c | 896 | "none", "noprobe", "nowerr", "cdrom", "nodma", |
207daeaa | 897 | "-6", "-7", "-8", "-9", "-10", |
36193484 | 898 | "noflush", "remap", "remap63", "scsi", NULL }; |
1da177e4 LT |
899 | unit = s[2] - 'a'; |
900 | hw = unit / MAX_DRIVES; | |
901 | unit = unit % MAX_DRIVES; | |
902 | hwif = &ide_hwifs[hw]; | |
903 | drive = &hwif->drives[unit]; | |
904 | if (strncmp(s + 4, "ide-", 4) == 0) { | |
905 | strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req)); | |
15220d9b | 906 | goto obsolete_option; |
1da177e4 LT |
907 | } |
908 | switch (match_parm(&s[3], hd_words, vals, 3)) { | |
909 | case -1: /* "none" */ | |
910 | case -2: /* "noprobe" */ | |
911 | drive->noprobe = 1; | |
6e87543a | 912 | goto obsolete_option; |
1da177e4 LT |
913 | case -3: /* "nowerr" */ |
914 | drive->bad_wstat = BAD_R_STAT; | |
6e87543a | 915 | goto obsolete_option; |
1da177e4 LT |
916 | case -4: /* "cdrom" */ |
917 | drive->present = 1; | |
918 | drive->media = ide_cdrom; | |
919 | /* an ATAPI device ignores DRDY */ | |
920 | drive->ready_stat = 0; | |
4706a7e0 | 921 | goto obsolete_option; |
c223701c BZ |
922 | case -5: /* nodma */ |
923 | drive->nodma = 1; | |
6e87543a | 924 | goto obsolete_option; |
36193484 JA |
925 | case -11: /* noflush */ |
926 | drive->noflush = 1; | |
6e87543a | 927 | goto obsolete_option; |
1da177e4 LT |
928 | case -12: /* "remap" */ |
929 | drive->remap_0_to_1 = 1; | |
d708c40d | 930 | goto obsolete_option; |
1da177e4 LT |
931 | case -13: /* "remap63" */ |
932 | drive->sect0 = 63; | |
d708c40d | 933 | goto obsolete_option; |
1da177e4 LT |
934 | case -14: /* "scsi" */ |
935 | drive->scsi = 1; | |
15220d9b | 936 | goto obsolete_option; |
1da177e4 LT |
937 | case 3: /* cyl,head,sect */ |
938 | drive->media = ide_disk; | |
939 | drive->ready_stat = READY_STAT; | |
940 | drive->cyl = drive->bios_cyl = vals[0]; | |
941 | drive->head = drive->bios_head = vals[1]; | |
942 | drive->sect = drive->bios_sect = vals[2]; | |
943 | drive->present = 1; | |
944 | drive->forced_geom = 1; | |
4706a7e0 | 945 | goto obsolete_option; |
1da177e4 LT |
946 | default: |
947 | goto bad_option; | |
948 | } | |
949 | } | |
950 | ||
951 | if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e') | |
952 | goto bad_option; | |
953 | /* | |
954 | * Look for bus speed option: "idebus=" | |
955 | */ | |
956 | if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') { | |
957 | if (match_parm(&s[6], NULL, vals, 1) != 1) | |
958 | goto bad_option; | |
959 | if (vals[0] >= 20 && vals[0] <= 66) { | |
960 | idebus_parameter = vals[0]; | |
961 | } else | |
962 | printk(" -- BAD BUS SPEED! Expected value from 20 to 66"); | |
73f1ad86 | 963 | goto obsolete_option; |
1da177e4 | 964 | } |
1da177e4 | 965 | |
1da177e4 LT |
966 | bad_option: |
967 | printk(" -- BAD OPTION\n"); | |
968 | return 1; | |
969 | obsolete_option: | |
970 | printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n"); | |
971 | return 1; | |
1da177e4 LT |
972 | } |
973 | ||
1da177e4 LT |
974 | EXPORT_SYMBOL(ide_lock); |
975 | ||
8604affd BZ |
976 | static int ide_bus_match(struct device *dev, struct device_driver *drv) |
977 | { | |
978 | return 1; | |
979 | } | |
980 | ||
263756ec KS |
981 | static char *media_string(ide_drive_t *drive) |
982 | { | |
983 | switch (drive->media) { | |
984 | case ide_disk: | |
985 | return "disk"; | |
986 | case ide_cdrom: | |
987 | return "cdrom"; | |
988 | case ide_tape: | |
989 | return "tape"; | |
990 | case ide_floppy: | |
991 | return "floppy"; | |
a7a832de DK |
992 | case ide_optical: |
993 | return "optical"; | |
263756ec KS |
994 | default: |
995 | return "UNKNOWN"; | |
996 | } | |
997 | } | |
998 | ||
999 | static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1000 | { | |
1001 | ide_drive_t *drive = to_ide_device(dev); | |
1002 | return sprintf(buf, "%s\n", media_string(drive)); | |
1003 | } | |
1004 | ||
1005 | static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1006 | { | |
1007 | ide_drive_t *drive = to_ide_device(dev); | |
1008 | return sprintf(buf, "%s\n", drive->name); | |
1009 | } | |
1010 | ||
1011 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1012 | { | |
1013 | ide_drive_t *drive = to_ide_device(dev); | |
1014 | return sprintf(buf, "ide:m-%s\n", media_string(drive)); | |
1015 | } | |
1016 | ||
e11b9035 BZ |
1017 | static ssize_t model_show(struct device *dev, struct device_attribute *attr, |
1018 | char *buf) | |
1019 | { | |
1020 | ide_drive_t *drive = to_ide_device(dev); | |
1021 | return sprintf(buf, "%s\n", drive->id->model); | |
1022 | } | |
1023 | ||
1024 | static ssize_t firmware_show(struct device *dev, struct device_attribute *attr, | |
1025 | char *buf) | |
1026 | { | |
1027 | ide_drive_t *drive = to_ide_device(dev); | |
1028 | return sprintf(buf, "%s\n", drive->id->fw_rev); | |
1029 | } | |
1030 | ||
1031 | static ssize_t serial_show(struct device *dev, struct device_attribute *attr, | |
1032 | char *buf) | |
1033 | { | |
1034 | ide_drive_t *drive = to_ide_device(dev); | |
1035 | return sprintf(buf, "%s\n", drive->id->serial_no); | |
1036 | } | |
1037 | ||
263756ec KS |
1038 | static struct device_attribute ide_dev_attrs[] = { |
1039 | __ATTR_RO(media), | |
1040 | __ATTR_RO(drivename), | |
1041 | __ATTR_RO(modalias), | |
e11b9035 BZ |
1042 | __ATTR_RO(model), |
1043 | __ATTR_RO(firmware), | |
1044 | __ATTR(serial, 0400, serial_show, NULL), | |
263756ec KS |
1045 | __ATTR_NULL |
1046 | }; | |
1047 | ||
7eff2e7a | 1048 | static int ide_uevent(struct device *dev, struct kobj_uevent_env *env) |
263756ec KS |
1049 | { |
1050 | ide_drive_t *drive = to_ide_device(dev); | |
7eff2e7a KS |
1051 | |
1052 | add_uevent_var(env, "MEDIA=%s", media_string(drive)); | |
1053 | add_uevent_var(env, "DRIVENAME=%s", drive->name); | |
1054 | add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive)); | |
263756ec KS |
1055 | return 0; |
1056 | } | |
1057 | ||
4031bbe4 RK |
1058 | static int generic_ide_probe(struct device *dev) |
1059 | { | |
1060 | ide_drive_t *drive = to_ide_device(dev); | |
1061 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1062 | ||
1063 | return drv->probe ? drv->probe(drive) : -ENODEV; | |
1064 | } | |
1065 | ||
1066 | static int generic_ide_remove(struct device *dev) | |
1067 | { | |
1068 | ide_drive_t *drive = to_ide_device(dev); | |
1069 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1070 | ||
1071 | if (drv->remove) | |
1072 | drv->remove(drive); | |
1073 | ||
1074 | return 0; | |
1075 | } | |
1076 | ||
1077 | static void generic_ide_shutdown(struct device *dev) | |
1078 | { | |
1079 | ide_drive_t *drive = to_ide_device(dev); | |
1080 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1081 | ||
1082 | if (dev->driver && drv->shutdown) | |
1083 | drv->shutdown(drive); | |
1084 | } | |
1085 | ||
1da177e4 LT |
1086 | struct bus_type ide_bus_type = { |
1087 | .name = "ide", | |
8604affd | 1088 | .match = ide_bus_match, |
263756ec | 1089 | .uevent = ide_uevent, |
4031bbe4 RK |
1090 | .probe = generic_ide_probe, |
1091 | .remove = generic_ide_remove, | |
1092 | .shutdown = generic_ide_shutdown, | |
263756ec | 1093 | .dev_attrs = ide_dev_attrs, |
1da177e4 LT |
1094 | .suspend = generic_ide_suspend, |
1095 | .resume = generic_ide_resume, | |
1096 | }; | |
1097 | ||
8604affd BZ |
1098 | EXPORT_SYMBOL_GPL(ide_bus_type); |
1099 | ||
f74c9141 BZ |
1100 | static void ide_port_class_release(struct device *portdev) |
1101 | { | |
1102 | ide_hwif_t *hwif = dev_get_drvdata(portdev); | |
1103 | ||
1104 | put_device(&hwif->gendev); | |
1105 | } | |
1106 | ||
ebae41a5 BZ |
1107 | int ide_vlb_clk; |
1108 | EXPORT_SYMBOL_GPL(ide_vlb_clk); | |
1109 | ||
1110 | module_param_named(vlb_clock, ide_vlb_clk, int, 0); | |
1111 | MODULE_PARM_DESC(vlb_clock, "VLB clock frequency (in MHz)"); | |
1112 | ||
1113 | int ide_pci_clk; | |
1114 | EXPORT_SYMBOL_GPL(ide_pci_clk); | |
1115 | ||
1116 | module_param_named(pci_clock, ide_pci_clk, int, 0); | |
1117 | MODULE_PARM_DESC(pci_clock, "PCI bus clock frequency (in MHz)"); | |
1118 | ||
6e87543a BZ |
1119 | static int ide_set_dev_param_mask(const char *s, struct kernel_param *kp) |
1120 | { | |
1121 | int a, b, i, j = 1; | |
1122 | unsigned int *dev_param_mask = (unsigned int *)kp->arg; | |
1123 | ||
1124 | if (sscanf(s, "%d.%d:%d", &a, &b, &j) != 3 && | |
1125 | sscanf(s, "%d.%d", &a, &b) != 2) | |
1126 | return -EINVAL; | |
1127 | ||
1128 | i = a * MAX_DRIVES + b; | |
1129 | ||
1130 | if (i >= MAX_HWIFS * MAX_DRIVES || j < 0 || j > 1) | |
1131 | return -EINVAL; | |
1132 | ||
1133 | if (j) | |
1134 | *dev_param_mask |= (1 << i); | |
1135 | else | |
1136 | *dev_param_mask &= (1 << i); | |
1137 | ||
1138 | return 0; | |
1139 | } | |
1140 | ||
1141 | static unsigned int ide_nodma; | |
1142 | ||
1143 | module_param_call(nodma, ide_set_dev_param_mask, NULL, &ide_nodma, 0); | |
1144 | MODULE_PARM_DESC(nodma, "disallow DMA for a device"); | |
1145 | ||
1146 | static unsigned int ide_noflush; | |
1147 | ||
1148 | module_param_call(noflush, ide_set_dev_param_mask, NULL, &ide_noflush, 0); | |
1149 | MODULE_PARM_DESC(noflush, "disable flush requests for a device"); | |
1150 | ||
1151 | static unsigned int ide_noprobe; | |
1152 | ||
1153 | module_param_call(noprobe, ide_set_dev_param_mask, NULL, &ide_noprobe, 0); | |
1154 | MODULE_PARM_DESC(noprobe, "skip probing for a device"); | |
1155 | ||
1156 | static unsigned int ide_nowerr; | |
1157 | ||
1158 | module_param_call(nowerr, ide_set_dev_param_mask, NULL, &ide_nowerr, 0); | |
1159 | MODULE_PARM_DESC(nowerr, "ignore the WRERR_STAT bit for a device"); | |
1160 | ||
4706a7e0 BZ |
1161 | static unsigned int ide_cdroms; |
1162 | ||
1163 | module_param_call(cdrom, ide_set_dev_param_mask, NULL, &ide_cdroms, 0); | |
1164 | MODULE_PARM_DESC(cdrom, "force device as a CD-ROM"); | |
1165 | ||
1166 | struct chs_geom { | |
1167 | unsigned int cyl; | |
1168 | u8 head; | |
1169 | u8 sect; | |
1170 | }; | |
1171 | ||
1172 | static unsigned int ide_disks; | |
1173 | static struct chs_geom ide_disks_chs[MAX_HWIFS * MAX_DRIVES]; | |
1174 | ||
1175 | static int ide_set_disk_chs(const char *str, struct kernel_param *kp) | |
1176 | { | |
1177 | int a, b, c = 0, h = 0, s = 0, i, j = 1; | |
1178 | ||
1179 | if (sscanf(str, "%d.%d:%d,%d,%d", &a, &b, &c, &h, &s) != 5 && | |
1180 | sscanf(str, "%d.%d:%d", &a, &b, &j) != 3) | |
1181 | return -EINVAL; | |
1182 | ||
1183 | i = a * MAX_DRIVES + b; | |
1184 | ||
1185 | if (i >= MAX_HWIFS * MAX_DRIVES || j < 0 || j > 1) | |
1186 | return -EINVAL; | |
1187 | ||
1188 | if (c > INT_MAX || h > 255 || s > 255) | |
1189 | return -EINVAL; | |
1190 | ||
1191 | if (j) | |
1192 | ide_disks |= (1 << i); | |
1193 | else | |
1194 | ide_disks &= (1 << i); | |
1195 | ||
1196 | ide_disks_chs[i].cyl = c; | |
1197 | ide_disks_chs[i].head = h; | |
1198 | ide_disks_chs[i].sect = s; | |
1199 | ||
1200 | return 0; | |
1201 | } | |
1202 | ||
1203 | module_param_call(chs, ide_set_disk_chs, NULL, NULL, 0); | |
1204 | MODULE_PARM_DESC(chs, "force device as a disk (using CHS)"); | |
1205 | ||
6e87543a BZ |
1206 | static void ide_dev_apply_params(ide_drive_t *drive) |
1207 | { | |
1208 | int i = drive->hwif->index * MAX_DRIVES + drive->select.b.unit; | |
1209 | ||
1210 | if (ide_nodma & (1 << i)) { | |
1211 | printk(KERN_INFO "ide: disallowing DMA for %s\n", drive->name); | |
1212 | drive->nodma = 1; | |
1213 | } | |
1214 | if (ide_noflush & (1 << i)) { | |
1215 | printk(KERN_INFO "ide: disabling flush requests for %s\n", | |
1216 | drive->name); | |
1217 | drive->noflush = 1; | |
1218 | } | |
1219 | if (ide_noprobe & (1 << i)) { | |
1220 | printk(KERN_INFO "ide: skipping probe for %s\n", drive->name); | |
1221 | drive->noprobe = 1; | |
1222 | } | |
1223 | if (ide_nowerr & (1 << i)) { | |
1224 | printk(KERN_INFO "ide: ignoring the WRERR_STAT bit for %s\n", | |
1225 | drive->name); | |
1226 | drive->bad_wstat = BAD_R_STAT; | |
1227 | } | |
4706a7e0 BZ |
1228 | if (ide_cdroms & (1 << i)) { |
1229 | printk(KERN_INFO "ide: forcing %s as a CD-ROM\n", drive->name); | |
1230 | drive->present = 1; | |
1231 | drive->media = ide_cdrom; | |
1232 | /* an ATAPI device ignores DRDY */ | |
1233 | drive->ready_stat = 0; | |
1234 | } | |
1235 | if (ide_disks & (1 << i)) { | |
1236 | drive->cyl = drive->bios_cyl = ide_disks_chs[i].cyl; | |
1237 | drive->head = drive->bios_head = ide_disks_chs[i].head; | |
1238 | drive->sect = drive->bios_sect = ide_disks_chs[i].sect; | |
1239 | drive->forced_geom = 1; | |
1240 | printk(KERN_INFO "ide: forcing %s as a disk (%d/%d/%d)\n", | |
1241 | drive->name, | |
1242 | drive->cyl, drive->head, drive->sect); | |
1243 | drive->present = 1; | |
1244 | drive->media = ide_disk; | |
1245 | drive->ready_stat = READY_STAT; | |
1246 | } | |
6e87543a BZ |
1247 | } |
1248 | ||
9fd91d95 BZ |
1249 | static unsigned int ide_ignore_cable; |
1250 | ||
1251 | static int ide_set_ignore_cable(const char *s, struct kernel_param *kp) | |
1252 | { | |
1253 | int i, j = 1; | |
1254 | ||
1255 | if (sscanf(s, "%d:%d", &i, &j) != 2 && sscanf(s, "%d", &i) != 1) | |
1256 | return -EINVAL; | |
1257 | ||
1258 | if (i >= MAX_HWIFS || j < 0 || j > 1) | |
1259 | return -EINVAL; | |
1260 | ||
1261 | if (j) | |
1262 | ide_ignore_cable |= (1 << i); | |
1263 | else | |
1264 | ide_ignore_cable &= (1 << i); | |
1265 | ||
1266 | return 0; | |
1267 | } | |
1268 | ||
1269 | module_param_call(ignore_cable, ide_set_ignore_cable, NULL, NULL, 0); | |
1270 | MODULE_PARM_DESC(ignore_cable, "ignore cable detection"); | |
1271 | ||
1272 | void ide_port_apply_params(ide_hwif_t *hwif) | |
1273 | { | |
6e87543a BZ |
1274 | int i; |
1275 | ||
9fd91d95 BZ |
1276 | if (ide_ignore_cable & (1 << hwif->index)) { |
1277 | printk(KERN_INFO "ide: ignoring cable detection for %s\n", | |
1278 | hwif->name); | |
1279 | hwif->cbl = ATA_CBL_PATA40_SHORT; | |
1280 | } | |
6e87543a BZ |
1281 | |
1282 | for (i = 0; i < MAX_DRIVES; i++) | |
1283 | ide_dev_apply_params(&hwif->drives[i]); | |
9fd91d95 BZ |
1284 | } |
1285 | ||
1da177e4 LT |
1286 | /* |
1287 | * This is gets invoked once during initialization, to set *everything* up | |
1288 | */ | |
1289 | static int __init ide_init(void) | |
1290 | { | |
349ae23f RD |
1291 | int ret; |
1292 | ||
eba8ff94 | 1293 | printk(KERN_INFO "Uniform Multi-Platform E-IDE driver\n"); |
1da177e4 LT |
1294 | system_bus_speed = ide_system_bus_speed(); |
1295 | ||
537f06c5 BZ |
1296 | printk(KERN_INFO "ide: Assuming %dMHz system bus speed " |
1297 | "for PIO modes%s\n", system_bus_speed, | |
1298 | idebus_parameter ? "" : "; override with idebus=xx"); | |
1299 | ||
349ae23f RD |
1300 | ret = bus_register(&ide_bus_type); |
1301 | if (ret < 0) { | |
1302 | printk(KERN_WARNING "IDE: bus_register error: %d\n", ret); | |
1303 | return ret; | |
1304 | } | |
1da177e4 | 1305 | |
f74c9141 BZ |
1306 | ide_port_class = class_create(THIS_MODULE, "ide_port"); |
1307 | if (IS_ERR(ide_port_class)) { | |
1308 | ret = PTR_ERR(ide_port_class); | |
1309 | goto out_port_class; | |
1310 | } | |
1311 | ide_port_class->dev_release = ide_port_class_release; | |
1312 | ||
1da177e4 LT |
1313 | init_ide_data(); |
1314 | ||
5cbf79cd | 1315 | proc_ide_create(); |
1da177e4 | 1316 | |
1da177e4 | 1317 | return 0; |
f74c9141 BZ |
1318 | |
1319 | out_port_class: | |
1320 | bus_unregister(&ide_bus_type); | |
1321 | ||
1322 | return ret; | |
1da177e4 LT |
1323 | } |
1324 | ||
1325 | #ifdef MODULE | |
1326 | static char *options = NULL; | |
1327 | module_param(options, charp, 0); | |
1328 | MODULE_LICENSE("GPL"); | |
1329 | ||
1330 | static void __init parse_options (char *line) | |
1331 | { | |
1332 | char *next = line; | |
1333 | ||
1334 | if (line == NULL || !*line) | |
1335 | return; | |
1336 | while ((line = next) != NULL) { | |
1337 | if ((next = strchr(line,' ')) != NULL) | |
1338 | *next++ = 0; | |
1339 | if (!ide_setup(line)) | |
1340 | printk (KERN_INFO "Unknown option '%s'\n", line); | |
1341 | } | |
1342 | } | |
1343 | ||
fbd8ad30 | 1344 | int __init init_module (void) |
1da177e4 LT |
1345 | { |
1346 | parse_options(options); | |
1347 | return ide_init(); | |
1348 | } | |
1349 | ||
eb797227 | 1350 | void __exit cleanup_module (void) |
1da177e4 LT |
1351 | { |
1352 | int index; | |
1353 | ||
1354 | for (index = 0; index < MAX_HWIFS; ++index) | |
93de00fd | 1355 | ide_unregister(index); |
1da177e4 | 1356 | |
1da177e4 | 1357 | proc_ide_destroy(); |
1da177e4 | 1358 | |
f74c9141 BZ |
1359 | class_destroy(ide_port_class); |
1360 | ||
1da177e4 LT |
1361 | bus_unregister(&ide_bus_type); |
1362 | } | |
1363 | ||
1364 | #else /* !MODULE */ | |
1365 | ||
1366 | __setup("", ide_setup); | |
1367 | ||
1368 | module_init(ide_init); | |
1369 | ||
1370 | #endif /* MODULE */ |