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