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Commit | Line | Data |
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1da177e4 | 1 | /* |
59bca8cc BZ |
2 | * Copyright (C) 1994-1998 Linus Torvalds & authors (see below) |
3 | * Copyright (C) 1998-2002 Linux ATA Development | |
4 | * Andre Hedrick <andre@linux-ide.org> | |
5 | * Copyright (C) 2003 Red Hat <alan@redhat.com> | |
6 | * Copyright (C) 2003-2005, 2007 Bartlomiej Zolnierkiewicz | |
1da177e4 LT |
7 | */ |
8 | ||
9 | /* | |
10 | * Mostly written by Mark Lord <mlord@pobox.com> | |
11 | * and Gadi Oxman <gadio@netvision.net.il> | |
12 | * and Andre Hedrick <andre@linux-ide.org> | |
13 | * | |
14 | * This is the IDE/ATA disk driver, as evolved from hd.c and ide.c. | |
1da177e4 LT |
15 | */ |
16 | ||
17 | #define IDEDISK_VERSION "1.18" | |
18 | ||
1da177e4 LT |
19 | #include <linux/module.h> |
20 | #include <linux/types.h> | |
21 | #include <linux/string.h> | |
22 | #include <linux/kernel.h> | |
23 | #include <linux/timer.h> | |
24 | #include <linux/mm.h> | |
25 | #include <linux/interrupt.h> | |
26 | #include <linux/major.h> | |
27 | #include <linux/errno.h> | |
28 | #include <linux/genhd.h> | |
29 | #include <linux/slab.h> | |
30 | #include <linux/delay.h> | |
cf8b8975 | 31 | #include <linux/mutex.h> |
2bfb646c | 32 | #include <linux/leds.h> |
1da177e4 LT |
33 | |
34 | #define _IDE_DISK | |
35 | ||
36 | #include <linux/ide.h> | |
37 | ||
38 | #include <asm/byteorder.h> | |
39 | #include <asm/irq.h> | |
40 | #include <asm/uaccess.h> | |
41 | #include <asm/io.h> | |
42 | #include <asm/div64.h> | |
43 | ||
44 | struct ide_disk_obj { | |
45 | ide_drive_t *drive; | |
46 | ide_driver_t *driver; | |
47 | struct gendisk *disk; | |
48 | struct kref kref; | |
c94964a4 | 49 | unsigned int openers; /* protected by BKL for now */ |
1da177e4 LT |
50 | }; |
51 | ||
cf8b8975 | 52 | static DEFINE_MUTEX(idedisk_ref_mutex); |
1da177e4 LT |
53 | |
54 | #define to_ide_disk(obj) container_of(obj, struct ide_disk_obj, kref) | |
55 | ||
56 | #define ide_disk_g(disk) \ | |
57 | container_of((disk)->private_data, struct ide_disk_obj, driver) | |
58 | ||
59 | static struct ide_disk_obj *ide_disk_get(struct gendisk *disk) | |
60 | { | |
61 | struct ide_disk_obj *idkp = NULL; | |
62 | ||
cf8b8975 | 63 | mutex_lock(&idedisk_ref_mutex); |
1da177e4 LT |
64 | idkp = ide_disk_g(disk); |
65 | if (idkp) | |
66 | kref_get(&idkp->kref); | |
cf8b8975 | 67 | mutex_unlock(&idedisk_ref_mutex); |
1da177e4 LT |
68 | return idkp; |
69 | } | |
70 | ||
71 | static void ide_disk_release(struct kref *); | |
72 | ||
73 | static void ide_disk_put(struct ide_disk_obj *idkp) | |
74 | { | |
cf8b8975 | 75 | mutex_lock(&idedisk_ref_mutex); |
1da177e4 | 76 | kref_put(&idkp->kref, ide_disk_release); |
cf8b8975 | 77 | mutex_unlock(&idedisk_ref_mutex); |
1da177e4 LT |
78 | } |
79 | ||
80 | /* | |
81 | * lba_capacity_is_ok() performs a sanity check on the claimed "lba_capacity" | |
82 | * value for this drive (from its reported identification information). | |
83 | * | |
84 | * Returns: 1 if lba_capacity looks sensible | |
85 | * 0 otherwise | |
86 | * | |
87 | * It is called only once for each drive. | |
88 | */ | |
98416549 | 89 | static int lba_capacity_is_ok(struct hd_driveid *id) |
1da177e4 LT |
90 | { |
91 | unsigned long lba_sects, chs_sects, head, tail; | |
92 | ||
6efd9360 AC |
93 | /* No non-LBA info .. so valid! */ |
94 | if (id->cyls == 0) | |
95 | return 1; | |
96 | ||
1da177e4 LT |
97 | /* |
98 | * The ATA spec tells large drives to return | |
99 | * C/H/S = 16383/16/63 independent of their size. | |
100 | * Some drives can be jumpered to use 15 heads instead of 16. | |
101 | * Some drives can be jumpered to use 4092 cyls instead of 16383. | |
102 | */ | |
103 | if ((id->cyls == 16383 | |
104 | || (id->cyls == 4092 && id->cur_cyls == 16383)) && | |
105 | id->sectors == 63 && | |
106 | (id->heads == 15 || id->heads == 16) && | |
107 | (id->lba_capacity >= 16383*63*id->heads)) | |
108 | return 1; | |
109 | ||
110 | lba_sects = id->lba_capacity; | |
111 | chs_sects = id->cyls * id->heads * id->sectors; | |
112 | ||
113 | /* perform a rough sanity check on lba_sects: within 10% is OK */ | |
114 | if ((lba_sects - chs_sects) < chs_sects/10) | |
115 | return 1; | |
116 | ||
117 | /* some drives have the word order reversed */ | |
118 | head = ((lba_sects >> 16) & 0xffff); | |
119 | tail = (lba_sects & 0xffff); | |
120 | lba_sects = (head | (tail << 16)); | |
121 | if ((lba_sects - chs_sects) < chs_sects/10) { | |
122 | id->lba_capacity = lba_sects; | |
123 | return 1; /* lba_capacity is (now) good */ | |
124 | } | |
125 | ||
126 | return 0; /* lba_capacity value may be bad */ | |
127 | } | |
128 | ||
ba76ae38 BZ |
129 | static const u8 ide_rw_cmds[] = { |
130 | WIN_MULTREAD, | |
131 | WIN_MULTWRITE, | |
132 | WIN_MULTREAD_EXT, | |
133 | WIN_MULTWRITE_EXT, | |
134 | WIN_READ, | |
135 | WIN_WRITE, | |
136 | WIN_READ_EXT, | |
137 | WIN_WRITE_EXT, | |
138 | WIN_READDMA, | |
139 | WIN_WRITEDMA, | |
140 | WIN_READDMA_EXT, | |
141 | WIN_WRITEDMA_EXT, | |
142 | }; | |
143 | ||
144 | static const u8 ide_data_phases[] = { | |
145 | TASKFILE_MULTI_IN, | |
146 | TASKFILE_MULTI_OUT, | |
147 | TASKFILE_IN, | |
148 | TASKFILE_OUT, | |
149 | TASKFILE_IN_DMA, | |
150 | TASKFILE_OUT_DMA, | |
151 | }; | |
152 | ||
153 | static void ide_tf_set_cmd(ide_drive_t *drive, ide_task_t *task, u8 dma) | |
154 | { | |
155 | u8 index, lba48, write; | |
156 | ||
157 | lba48 = (task->tf_flags & IDE_TFLAG_LBA48) ? 2 : 0; | |
158 | write = (task->tf_flags & IDE_TFLAG_WRITE) ? 1 : 0; | |
159 | ||
160 | if (dma) | |
161 | index = drive->vdma ? 4 : 8; | |
162 | else | |
163 | index = drive->mult_count ? 0 : 4; | |
164 | ||
165 | task->tf.command = ide_rw_cmds[index + lba48 + write]; | |
166 | ||
167 | if (dma) | |
168 | index = 8; /* fixup index */ | |
169 | ||
170 | task->data_phase = ide_data_phases[index / 2 + write]; | |
171 | } | |
172 | ||
1da177e4 LT |
173 | /* |
174 | * __ide_do_rw_disk() issues READ and WRITE commands to a disk, | |
175 | * using LBA if supported, or CHS otherwise, to address sectors. | |
176 | */ | |
98416549 BZ |
177 | static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq, |
178 | sector_t block) | |
1da177e4 LT |
179 | { |
180 | ide_hwif_t *hwif = HWIF(drive); | |
181 | unsigned int dma = drive->using_dma; | |
790d1239 | 182 | u16 nsectors = (u16)rq->nr_sectors; |
1da177e4 | 183 | u8 lba48 = (drive->addressing == 1) ? 1 : 0; |
9e42237f BZ |
184 | ide_task_t task; |
185 | struct ide_taskfile *tf = &task.tf; | |
f6e29e35 | 186 | ide_startstop_t rc; |
1da177e4 | 187 | |
238e4f14 | 188 | if ((hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && lba48 && dma) { |
1da177e4 LT |
189 | if (block + rq->nr_sectors > 1ULL << 28) |
190 | dma = 0; | |
191 | else | |
192 | lba48 = 0; | |
193 | } | |
194 | ||
195 | if (!dma) { | |
196 | ide_init_sg_cmd(drive, rq); | |
197 | ide_map_sg(drive, rq); | |
198 | } | |
199 | ||
9e42237f BZ |
200 | memset(&task, 0, sizeof(task)); |
201 | task.tf_flags = IDE_TFLAG_NO_SELECT_MASK; /* FIXME? */ | |
657cc1a8 | 202 | task.tf_flags |= (IDE_TFLAG_TF | IDE_TFLAG_DEVICE); |
2bd06b23 | 203 | |
1da177e4 LT |
204 | if (drive->select.b.lba) { |
205 | if (lba48) { | |
c2f8311d MR |
206 | pr_debug("%s: LBA=0x%012llx\n", drive->name, |
207 | (unsigned long long)block); | |
1da177e4 | 208 | |
790d1239 | 209 | tf->hob_nsect = (nsectors >> 8) & 0xff; |
2bd06b23 BZ |
210 | tf->hob_lbal = (u8)(block >> 24); |
211 | if (sizeof(block) != 4) { | |
212 | tf->hob_lbam = (u8)((u64)block >> 32); | |
213 | tf->hob_lbah = (u8)((u64)block >> 40); | |
1da177e4 | 214 | } |
2bd06b23 | 215 | |
790d1239 | 216 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
217 | tf->lbal = (u8) block; |
218 | tf->lbam = (u8)(block >> 8); | |
219 | tf->lbah = (u8)(block >> 16); | |
6dd9b837 | 220 | |
657cc1a8 | 221 | task.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB); |
1da177e4 | 222 | } else { |
790d1239 | 223 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
224 | tf->lbal = block; |
225 | tf->lbam = block >>= 8; | |
226 | tf->lbah = block >>= 8; | |
227 | tf->device = (block >> 8) & 0xf; | |
1da177e4 LT |
228 | } |
229 | } else { | |
98416549 BZ |
230 | unsigned int sect, head, cyl, track; |
231 | ||
1da177e4 LT |
232 | track = (int)block / drive->sect; |
233 | sect = (int)block % drive->sect + 1; | |
1da177e4 LT |
234 | head = track % drive->head; |
235 | cyl = track / drive->head; | |
236 | ||
237 | pr_debug("%s: CHS=%u/%u/%u\n", drive->name, cyl, head, sect); | |
238 | ||
790d1239 | 239 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
240 | tf->lbal = sect; |
241 | tf->lbam = cyl; | |
242 | tf->lbah = cyl >> 8; | |
243 | tf->device = head; | |
1da177e4 LT |
244 | } |
245 | ||
ba76ae38 BZ |
246 | if (rq_data_dir(rq)) |
247 | task.tf_flags |= IDE_TFLAG_WRITE; | |
248 | ||
249 | ide_tf_set_cmd(drive, &task, dma); | |
f6e29e35 BZ |
250 | if (!dma) |
251 | hwif->data_phase = task.data_phase; | |
252 | task.rq = rq; | |
ba76ae38 | 253 | |
f6e29e35 | 254 | rc = do_rw_taskfile(drive, &task); |
2bd06b23 | 255 | |
f6e29e35 | 256 | if (rc == ide_stopped && dma) { |
1da177e4 | 257 | /* fallback to PIO */ |
f6e29e35 | 258 | task.tf_flags |= IDE_TFLAG_DMA_PIO_FALLBACK; |
ba76ae38 | 259 | ide_tf_set_cmd(drive, &task, 0); |
f6e29e35 | 260 | hwif->data_phase = task.data_phase; |
1da177e4 | 261 | ide_init_sg_cmd(drive, rq); |
f6e29e35 | 262 | rc = do_rw_taskfile(drive, &task); |
1da177e4 LT |
263 | } |
264 | ||
f6e29e35 | 265 | return rc; |
1da177e4 LT |
266 | } |
267 | ||
268 | /* | |
269 | * 268435455 == 137439 MB or 28bit limit | |
270 | * 320173056 == 163929 MB or 48bit addressing | |
271 | * 1073741822 == 549756 MB or 48bit addressing fake drive | |
272 | */ | |
273 | ||
98416549 BZ |
274 | static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq, |
275 | sector_t block) | |
1da177e4 LT |
276 | { |
277 | ide_hwif_t *hwif = HWIF(drive); | |
278 | ||
279 | BUG_ON(drive->blocked); | |
280 | ||
281 | if (!blk_fs_request(rq)) { | |
282 | blk_dump_rq_flags(rq, "ide_do_rw_disk - bad command"); | |
283 | ide_end_request(drive, 0, 0); | |
284 | return ide_stopped; | |
285 | } | |
286 | ||
2bfb646c RP |
287 | ledtrig_ide_activity(); |
288 | ||
1da177e4 LT |
289 | pr_debug("%s: %sing: block=%llu, sectors=%lu, buffer=0x%08lx\n", |
290 | drive->name, rq_data_dir(rq) == READ ? "read" : "writ", | |
c2f8311d MR |
291 | (unsigned long long)block, rq->nr_sectors, |
292 | (unsigned long)rq->buffer); | |
1da177e4 LT |
293 | |
294 | if (hwif->rw_disk) | |
295 | hwif->rw_disk(drive, rq); | |
296 | ||
297 | return __ide_do_rw_disk(drive, rq, block); | |
298 | } | |
299 | ||
300 | /* | |
301 | * Queries for true maximum capacity of the drive. | |
302 | * Returns maximum LBA address (> 0) of the drive, 0 if failed. | |
303 | */ | |
7a3b7512 | 304 | static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48) |
1da177e4 LT |
305 | { |
306 | ide_task_t args; | |
650d841d | 307 | struct ide_taskfile *tf = &args.tf; |
7a3b7512 | 308 | u64 addr = 0; |
1da177e4 LT |
309 | |
310 | /* Create IDE/ATA command request structure */ | |
311 | memset(&args, 0, sizeof(ide_task_t)); | |
7a3b7512 BZ |
312 | if (lba48) |
313 | tf->command = WIN_READ_NATIVE_MAX_EXT; | |
314 | else | |
315 | tf->command = WIN_READ_NATIVE_MAX; | |
650d841d | 316 | tf->device = ATA_LBA; |
657cc1a8 | 317 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
a3bbb9d8 | 318 | if (lba48) |
657cc1a8 | 319 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB); |
1da177e4 | 320 | /* submit command request */ |
9a3c49be | 321 | ide_no_data_taskfile(drive, &args); |
1da177e4 | 322 | |
1da177e4 | 323 | /* if OK, compute maximum address value */ |
a501633c BZ |
324 | if ((tf->status & 0x01) == 0) |
325 | addr = ide_get_lba_addr(tf, lba48) + 1; | |
650d841d | 326 | |
1da177e4 LT |
327 | return addr; |
328 | } | |
329 | ||
330 | /* | |
331 | * Sets maximum virtual LBA address of the drive. | |
332 | * Returns new maximum virtual LBA address (> 0) or 0 on failure. | |
333 | */ | |
7a3b7512 | 334 | static u64 idedisk_set_max_address(ide_drive_t *drive, u64 addr_req, int lba48) |
1da177e4 LT |
335 | { |
336 | ide_task_t args; | |
650d841d | 337 | struct ide_taskfile *tf = &args.tf; |
7a3b7512 | 338 | u64 addr_set = 0; |
1da177e4 LT |
339 | |
340 | addr_req--; | |
341 | /* Create IDE/ATA command request structure */ | |
342 | memset(&args, 0, sizeof(ide_task_t)); | |
650d841d BZ |
343 | tf->lbal = (addr_req >> 0) & 0xff; |
344 | tf->lbam = (addr_req >>= 8) & 0xff; | |
345 | tf->lbah = (addr_req >>= 8) & 0xff; | |
7a3b7512 BZ |
346 | if (lba48) { |
347 | tf->hob_lbal = (addr_req >>= 8) & 0xff; | |
348 | tf->hob_lbam = (addr_req >>= 8) & 0xff; | |
349 | tf->hob_lbah = (addr_req >>= 8) & 0xff; | |
350 | tf->command = WIN_SET_MAX_EXT; | |
351 | } else { | |
352 | tf->device = (addr_req >>= 8) & 0x0f; | |
353 | tf->command = WIN_SET_MAX; | |
354 | } | |
355 | tf->device |= ATA_LBA; | |
657cc1a8 | 356 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
a3bbb9d8 | 357 | if (lba48) |
657cc1a8 | 358 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB); |
1da177e4 | 359 | /* submit command request */ |
9a3c49be | 360 | ide_no_data_taskfile(drive, &args); |
1da177e4 | 361 | /* if OK, compute maximum address value */ |
a501633c BZ |
362 | if ((tf->status & 0x01) == 0) |
363 | addr_set = ide_get_lba_addr(tf, lba48) + 1; | |
650d841d | 364 | |
1da177e4 LT |
365 | return addr_set; |
366 | } | |
367 | ||
368 | static unsigned long long sectors_to_MB(unsigned long long n) | |
369 | { | |
370 | n <<= 9; /* make it bytes */ | |
371 | do_div(n, 1000000); /* make it MB */ | |
372 | return n; | |
373 | } | |
374 | ||
375 | /* | |
376 | * Bits 10 of command_set_1 and cfs_enable_1 must be equal, | |
377 | * so on non-buggy drives we need test only one. | |
378 | * However, we should also check whether these fields are valid. | |
379 | */ | |
380 | static inline int idedisk_supports_hpa(const struct hd_driveid *id) | |
381 | { | |
382 | return (id->command_set_1 & 0x0400) && (id->cfs_enable_1 & 0x0400); | |
383 | } | |
384 | ||
385 | /* | |
386 | * The same here. | |
387 | */ | |
388 | static inline int idedisk_supports_lba48(const struct hd_driveid *id) | |
389 | { | |
390 | return (id->command_set_2 & 0x0400) && (id->cfs_enable_2 & 0x0400) | |
391 | && id->lba_capacity_2; | |
392 | } | |
393 | ||
b0244a00 BZ |
394 | /* |
395 | * Some disks report total number of sectors instead of | |
396 | * maximum sector address. We list them here. | |
397 | */ | |
398 | static const struct drive_list_entry hpa_list[] = { | |
399 | { "ST340823A", NULL }, | |
7062cdc5 | 400 | { "ST320413A", NULL }, |
b152fcd3 | 401 | { "ST310211A", NULL }, |
b0244a00 BZ |
402 | { NULL, NULL } |
403 | }; | |
404 | ||
858119e1 | 405 | static void idedisk_check_hpa(ide_drive_t *drive) |
1da177e4 LT |
406 | { |
407 | unsigned long long capacity, set_max; | |
408 | int lba48 = idedisk_supports_lba48(drive->id); | |
409 | ||
410 | capacity = drive->capacity64; | |
7a3b7512 BZ |
411 | |
412 | set_max = idedisk_read_native_max_address(drive, lba48); | |
1da177e4 | 413 | |
b0244a00 BZ |
414 | if (ide_in_drive_list(drive->id, hpa_list)) { |
415 | /* | |
416 | * Since we are inclusive wrt to firmware revisions do this | |
417 | * extra check and apply the workaround only when needed. | |
418 | */ | |
419 | if (set_max == capacity + 1) | |
420 | set_max--; | |
421 | } | |
422 | ||
1da177e4 LT |
423 | if (set_max <= capacity) |
424 | return; | |
425 | ||
426 | printk(KERN_INFO "%s: Host Protected Area detected.\n" | |
427 | "\tcurrent capacity is %llu sectors (%llu MB)\n" | |
428 | "\tnative capacity is %llu sectors (%llu MB)\n", | |
429 | drive->name, | |
430 | capacity, sectors_to_MB(capacity), | |
431 | set_max, sectors_to_MB(set_max)); | |
432 | ||
7a3b7512 BZ |
433 | set_max = idedisk_set_max_address(drive, set_max, lba48); |
434 | ||
1da177e4 LT |
435 | if (set_max) { |
436 | drive->capacity64 = set_max; | |
437 | printk(KERN_INFO "%s: Host Protected Area disabled.\n", | |
438 | drive->name); | |
439 | } | |
440 | } | |
441 | ||
442 | /* | |
443 | * Compute drive->capacity, the full capacity of the drive | |
444 | * Called with drive->id != NULL. | |
445 | * | |
446 | * To compute capacity, this uses either of | |
447 | * | |
448 | * 1. CHS value set by user (whatever user sets will be trusted) | |
449 | * 2. LBA value from target drive (require new ATA feature) | |
450 | * 3. LBA value from system BIOS (new one is OK, old one may break) | |
451 | * 4. CHS value from system BIOS (traditional style) | |
452 | * | |
453 | * in above order (i.e., if value of higher priority is available, | |
454 | * reset will be ignored). | |
455 | */ | |
98416549 | 456 | static void init_idedisk_capacity(ide_drive_t *drive) |
1da177e4 LT |
457 | { |
458 | struct hd_driveid *id = drive->id; | |
459 | /* | |
460 | * If this drive supports the Host Protected Area feature set, | |
461 | * then we may need to change our opinion about the drive's capacity. | |
462 | */ | |
463 | int hpa = idedisk_supports_hpa(id); | |
464 | ||
465 | if (idedisk_supports_lba48(id)) { | |
466 | /* drive speaks 48-bit LBA */ | |
467 | drive->select.b.lba = 1; | |
468 | drive->capacity64 = id->lba_capacity_2; | |
469 | if (hpa) | |
470 | idedisk_check_hpa(drive); | |
471 | } else if ((id->capability & 2) && lba_capacity_is_ok(id)) { | |
472 | /* drive speaks 28-bit LBA */ | |
473 | drive->select.b.lba = 1; | |
474 | drive->capacity64 = id->lba_capacity; | |
475 | if (hpa) | |
476 | idedisk_check_hpa(drive); | |
477 | } else { | |
478 | /* drive speaks boring old 28-bit CHS */ | |
479 | drive->capacity64 = drive->cyl * drive->head * drive->sect; | |
480 | } | |
481 | } | |
482 | ||
98416549 | 483 | static sector_t idedisk_capacity(ide_drive_t *drive) |
1da177e4 LT |
484 | { |
485 | return drive->capacity64 - drive->sect0; | |
486 | } | |
487 | ||
ecfd80e4 | 488 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
489 | static int smart_enable(ide_drive_t *drive) |
490 | { | |
491 | ide_task_t args; | |
650d841d | 492 | struct ide_taskfile *tf = &args.tf; |
1da177e4 LT |
493 | |
494 | memset(&args, 0, sizeof(ide_task_t)); | |
650d841d BZ |
495 | tf->feature = SMART_ENABLE; |
496 | tf->lbam = SMART_LCYL_PASS; | |
497 | tf->lbah = SMART_HCYL_PASS; | |
498 | tf->command = WIN_SMART; | |
657cc1a8 | 499 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
9a3c49be | 500 | return ide_no_data_taskfile(drive, &args); |
1da177e4 LT |
501 | } |
502 | ||
43e7c0c4 | 503 | static int get_smart_data(ide_drive_t *drive, u8 *buf, u8 sub_cmd) |
1da177e4 LT |
504 | { |
505 | ide_task_t args; | |
650d841d | 506 | struct ide_taskfile *tf = &args.tf; |
1da177e4 LT |
507 | |
508 | memset(&args, 0, sizeof(ide_task_t)); | |
650d841d BZ |
509 | tf->feature = sub_cmd; |
510 | tf->nsect = 0x01; | |
511 | tf->lbam = SMART_LCYL_PASS; | |
512 | tf->lbah = SMART_HCYL_PASS; | |
513 | tf->command = WIN_SMART; | |
657cc1a8 | 514 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
ac026ff2 | 515 | args.data_phase = TASKFILE_IN; |
1da177e4 | 516 | (void) smart_enable(drive); |
ac026ff2 | 517 | return ide_raw_taskfile(drive, &args, buf, 1); |
1da177e4 LT |
518 | } |
519 | ||
520 | static int proc_idedisk_read_cache | |
521 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
522 | { | |
523 | ide_drive_t *drive = (ide_drive_t *) data; | |
524 | char *out = page; | |
525 | int len; | |
526 | ||
527 | if (drive->id_read) | |
98416549 | 528 | len = sprintf(out, "%i\n", drive->id->buf_size / 2); |
1da177e4 | 529 | else |
98416549 BZ |
530 | len = sprintf(out, "(none)\n"); |
531 | ||
532 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1da177e4 LT |
533 | } |
534 | ||
535 | static int proc_idedisk_read_capacity | |
536 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
537 | { | |
538 | ide_drive_t*drive = (ide_drive_t *)data; | |
539 | int len; | |
540 | ||
98416549 BZ |
541 | len = sprintf(page, "%llu\n", (long long)idedisk_capacity(drive)); |
542 | ||
543 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1da177e4 LT |
544 | } |
545 | ||
799ee57a BZ |
546 | static int proc_idedisk_read_smart(char *page, char **start, off_t off, |
547 | int count, int *eof, void *data, u8 sub_cmd) | |
1da177e4 LT |
548 | { |
549 | ide_drive_t *drive = (ide_drive_t *)data; | |
550 | int len = 0, i = 0; | |
551 | ||
799ee57a | 552 | if (get_smart_data(drive, page, sub_cmd) == 0) { |
1da177e4 LT |
553 | unsigned short *val = (unsigned short *) page; |
554 | char *out = ((char *)val) + (SECTOR_WORDS * 4); | |
555 | page = out; | |
556 | do { | |
98416549 BZ |
557 | out += sprintf(out, "%04x%c", le16_to_cpu(*val), |
558 | (++i & 7) ? ' ' : '\n'); | |
1da177e4 LT |
559 | val += 1; |
560 | } while (i < (SECTOR_WORDS * 2)); | |
561 | len = out - page; | |
562 | } | |
98416549 BZ |
563 | |
564 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1da177e4 LT |
565 | } |
566 | ||
799ee57a | 567 | static int proc_idedisk_read_sv |
1da177e4 LT |
568 | (char *page, char **start, off_t off, int count, int *eof, void *data) |
569 | { | |
799ee57a BZ |
570 | return proc_idedisk_read_smart(page, start, off, count, eof, data, |
571 | SMART_READ_VALUES); | |
572 | } | |
1da177e4 | 573 | |
799ee57a BZ |
574 | static int proc_idedisk_read_st |
575 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
576 | { | |
577 | return proc_idedisk_read_smart(page, start, off, count, eof, data, | |
578 | SMART_READ_THRESHOLDS); | |
1da177e4 LT |
579 | } |
580 | ||
581 | static ide_proc_entry_t idedisk_proc[] = { | |
799ee57a BZ |
582 | { "cache", S_IFREG|S_IRUGO, proc_idedisk_read_cache, NULL }, |
583 | { "capacity", S_IFREG|S_IRUGO, proc_idedisk_read_capacity, NULL }, | |
584 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, | |
585 | { "smart_values", S_IFREG|S_IRUSR, proc_idedisk_read_sv, NULL }, | |
586 | { "smart_thresholds", S_IFREG|S_IRUSR, proc_idedisk_read_st, NULL }, | |
1da177e4 LT |
587 | { NULL, 0, NULL, NULL } |
588 | }; | |
ecfd80e4 | 589 | #endif /* CONFIG_IDE_PROC_FS */ |
1da177e4 | 590 | |
165125e1 | 591 | static void idedisk_prepare_flush(struct request_queue *q, struct request *rq) |
1da177e4 LT |
592 | { |
593 | ide_drive_t *drive = q->queuedata; | |
395d8ef5 | 594 | ide_task_t *task = kmalloc(sizeof(*task), GFP_ATOMIC); |
1da177e4 | 595 | |
395d8ef5 BZ |
596 | /* FIXME: map struct ide_taskfile on rq->cmd[] */ |
597 | BUG_ON(task == NULL); | |
598 | ||
599 | memset(task, 0, sizeof(*task)); | |
1da177e4 LT |
600 | if (ide_id_has_flush_cache_ext(drive->id) && |
601 | (drive->capacity64 >= (1UL << 28))) | |
395d8ef5 | 602 | task->tf.command = WIN_FLUSH_CACHE_EXT; |
1da177e4 | 603 | else |
395d8ef5 BZ |
604 | task->tf.command = WIN_FLUSH_CACHE; |
605 | task->tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE | | |
606 | IDE_TFLAG_DYN; | |
607 | task->data_phase = TASKFILE_NO_DATA; | |
1da177e4 | 608 | |
813a0eb2 | 609 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; |
4aff5e23 | 610 | rq->cmd_flags |= REQ_SOFTBARRIER; |
395d8ef5 | 611 | rq->special = task; |
1da177e4 LT |
612 | } |
613 | ||
1da177e4 LT |
614 | /* |
615 | * This is tightly woven into the driver->do_special can not touch. | |
616 | * DON'T do it again until a total personality rewrite is committed. | |
617 | */ | |
618 | static int set_multcount(ide_drive_t *drive, int arg) | |
619 | { | |
620 | struct request rq; | |
621 | ||
1497943e BZ |
622 | if (arg < 0 || arg > drive->id->max_multsect) |
623 | return -EINVAL; | |
624 | ||
1da177e4 LT |
625 | if (drive->special.b.set_multmode) |
626 | return -EBUSY; | |
852738f3 | 627 | |
98416549 | 628 | ide_init_drive_cmd(&rq); |
852738f3 BZ |
629 | rq.cmd_type = REQ_TYPE_ATA_TASKFILE; |
630 | ||
1da177e4 LT |
631 | drive->mult_req = arg; |
632 | drive->special.b.set_multmode = 1; | |
98416549 BZ |
633 | (void)ide_do_drive_cmd(drive, &rq, ide_wait); |
634 | ||
1da177e4 LT |
635 | return (drive->mult_count == arg) ? 0 : -EIO; |
636 | } | |
637 | ||
638 | static int set_nowerr(ide_drive_t *drive, int arg) | |
639 | { | |
1497943e BZ |
640 | if (arg < 0 || arg > 1) |
641 | return -EINVAL; | |
642 | ||
1da177e4 LT |
643 | if (ide_spin_wait_hwgroup(drive)) |
644 | return -EBUSY; | |
645 | drive->nowerr = arg; | |
646 | drive->bad_wstat = arg ? BAD_R_STAT : BAD_W_STAT; | |
647 | spin_unlock_irq(&ide_lock); | |
648 | return 0; | |
649 | } | |
650 | ||
3e087b57 TH |
651 | static void update_ordered(ide_drive_t *drive) |
652 | { | |
653 | struct hd_driveid *id = drive->id; | |
654 | unsigned ordered = QUEUE_ORDERED_NONE; | |
655 | prepare_flush_fn *prep_fn = NULL; | |
3e087b57 TH |
656 | |
657 | if (drive->wcache) { | |
658 | unsigned long long capacity; | |
659 | int barrier; | |
660 | /* | |
661 | * We must avoid issuing commands a drive does not | |
662 | * understand or we may crash it. We check flush cache | |
663 | * is supported. We also check we have the LBA48 flush | |
664 | * cache if the drive capacity is too large. By this | |
665 | * time we have trimmed the drive capacity if LBA48 is | |
666 | * not available so we don't need to recheck that. | |
667 | */ | |
668 | capacity = idedisk_capacity(drive); | |
36193484 | 669 | barrier = ide_id_has_flush_cache(id) && !drive->noflush && |
3e087b57 TH |
670 | (drive->addressing == 0 || capacity <= (1ULL << 28) || |
671 | ide_id_has_flush_cache_ext(id)); | |
672 | ||
673 | printk(KERN_INFO "%s: cache flushes %ssupported\n", | |
f7ad836c | 674 | drive->name, barrier ? "" : "not "); |
3e087b57 TH |
675 | |
676 | if (barrier) { | |
677 | ordered = QUEUE_ORDERED_DRAIN_FLUSH; | |
678 | prep_fn = idedisk_prepare_flush; | |
3e087b57 TH |
679 | } |
680 | } else | |
681 | ordered = QUEUE_ORDERED_DRAIN; | |
682 | ||
683 | blk_queue_ordered(drive->queue, ordered, prep_fn); | |
3e087b57 TH |
684 | } |
685 | ||
1da177e4 LT |
686 | static int write_cache(ide_drive_t *drive, int arg) |
687 | { | |
688 | ide_task_t args; | |
3e087b57 | 689 | int err = 1; |
1da177e4 | 690 | |
1497943e BZ |
691 | if (arg < 0 || arg > 1) |
692 | return -EINVAL; | |
693 | ||
3e087b57 TH |
694 | if (ide_id_has_flush_cache(drive->id)) { |
695 | memset(&args, 0, sizeof(ide_task_t)); | |
650d841d | 696 | args.tf.feature = arg ? |
1da177e4 | 697 | SETFEATURES_EN_WCACHE : SETFEATURES_DIS_WCACHE; |
650d841d | 698 | args.tf.command = WIN_SETFEATURES; |
657cc1a8 | 699 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
9a3c49be | 700 | err = ide_no_data_taskfile(drive, &args); |
3e087b57 TH |
701 | if (err == 0) |
702 | drive->wcache = arg; | |
703 | } | |
1da177e4 | 704 | |
3e087b57 | 705 | update_ordered(drive); |
1da177e4 | 706 | |
3e087b57 | 707 | return err; |
1da177e4 LT |
708 | } |
709 | ||
98416549 | 710 | static int do_idedisk_flushcache(ide_drive_t *drive) |
1da177e4 LT |
711 | { |
712 | ide_task_t args; | |
713 | ||
714 | memset(&args, 0, sizeof(ide_task_t)); | |
715 | if (ide_id_has_flush_cache_ext(drive->id)) | |
650d841d | 716 | args.tf.command = WIN_FLUSH_CACHE_EXT; |
1da177e4 | 717 | else |
650d841d | 718 | args.tf.command = WIN_FLUSH_CACHE; |
657cc1a8 | 719 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
9a3c49be | 720 | return ide_no_data_taskfile(drive, &args); |
1da177e4 LT |
721 | } |
722 | ||
98416549 | 723 | static int set_acoustic(ide_drive_t *drive, int arg) |
1da177e4 LT |
724 | { |
725 | ide_task_t args; | |
726 | ||
1497943e BZ |
727 | if (arg < 0 || arg > 254) |
728 | return -EINVAL; | |
729 | ||
1da177e4 | 730 | memset(&args, 0, sizeof(ide_task_t)); |
650d841d BZ |
731 | args.tf.feature = arg ? SETFEATURES_EN_AAM : SETFEATURES_DIS_AAM; |
732 | args.tf.nsect = arg; | |
733 | args.tf.command = WIN_SETFEATURES; | |
657cc1a8 | 734 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
9a3c49be | 735 | ide_no_data_taskfile(drive, &args); |
1da177e4 LT |
736 | drive->acoustic = arg; |
737 | return 0; | |
738 | } | |
739 | ||
740 | /* | |
741 | * drive->addressing: | |
742 | * 0: 28-bit | |
743 | * 1: 48-bit | |
744 | * 2: 48-bit capable doing 28-bit | |
745 | */ | |
746 | static int set_lba_addressing(ide_drive_t *drive, int arg) | |
747 | { | |
1497943e BZ |
748 | if (arg < 0 || arg > 2) |
749 | return -EINVAL; | |
750 | ||
1da177e4 LT |
751 | drive->addressing = 0; |
752 | ||
238e4f14 | 753 | if (drive->hwif->host_flags & IDE_HFLAG_NO_LBA48) |
1da177e4 LT |
754 | return 0; |
755 | ||
756 | if (!idedisk_supports_lba48(drive->id)) | |
98416549 | 757 | return -EIO; |
1da177e4 LT |
758 | drive->addressing = arg; |
759 | return 0; | |
760 | } | |
761 | ||
7662d046 | 762 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
763 | static void idedisk_add_settings(ide_drive_t *drive) |
764 | { | |
765 | struct hd_driveid *id = drive->id; | |
766 | ||
98416549 BZ |
767 | ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, |
768 | &drive->bios_cyl, NULL); | |
769 | ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, | |
770 | &drive->bios_head, NULL); | |
771 | ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, | |
772 | &drive->bios_sect, NULL); | |
773 | ide_add_setting(drive, "address", SETTING_RW, TYPE_BYTE, 0, 2, 1, 1, | |
774 | &drive->addressing, set_lba_addressing); | |
775 | ide_add_setting(drive, "multcount", SETTING_RW, TYPE_BYTE, 0, | |
776 | id->max_multsect, 1, 1, &drive->mult_count, | |
777 | set_multcount); | |
778 | ide_add_setting(drive, "nowerr", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, | |
779 | &drive->nowerr, set_nowerr); | |
780 | ide_add_setting(drive, "lun", SETTING_RW, TYPE_INT, 0, 7, 1, 1, | |
781 | &drive->lun, NULL); | |
782 | ide_add_setting(drive, "wcache", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, | |
783 | &drive->wcache, write_cache); | |
784 | ide_add_setting(drive, "acoustic", SETTING_RW, TYPE_BYTE, 0, 254, 1, 1, | |
785 | &drive->acoustic, set_acoustic); | |
786 | ide_add_setting(drive, "failures", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, | |
787 | &drive->failures, NULL); | |
788 | ide_add_setting(drive, "max_failures", SETTING_RW, TYPE_INT, 0, 65535, | |
789 | 1, 1, &drive->max_failures, NULL); | |
1da177e4 | 790 | } |
7662d046 BZ |
791 | #else |
792 | static inline void idedisk_add_settings(ide_drive_t *drive) { ; } | |
793 | #endif | |
1da177e4 | 794 | |
98416549 | 795 | static void idedisk_setup(ide_drive_t *drive) |
1da177e4 | 796 | { |
238e4f14 | 797 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 LT |
798 | struct hd_driveid *id = drive->id; |
799 | unsigned long long capacity; | |
1da177e4 LT |
800 | |
801 | idedisk_add_settings(drive); | |
802 | ||
803 | if (drive->id_read == 0) | |
804 | return; | |
805 | ||
98109337 | 806 | if (drive->removable) { |
1da177e4 | 807 | /* |
98416549 | 808 | * Removable disks (eg. SYQUEST); ignore 'WD' drives |
1da177e4 | 809 | */ |
98416549 | 810 | if (id->model[0] != 'W' || id->model[1] != 'D') |
1da177e4 | 811 | drive->doorlocking = 1; |
1da177e4 LT |
812 | } |
813 | ||
814 | (void)set_lba_addressing(drive, 1); | |
815 | ||
816 | if (drive->addressing == 1) { | |
1da177e4 LT |
817 | int max_s = 2048; |
818 | ||
819 | if (max_s > hwif->rqsize) | |
820 | max_s = hwif->rqsize; | |
821 | ||
822 | blk_queue_max_sectors(drive->queue, max_s); | |
823 | } | |
824 | ||
98416549 BZ |
825 | printk(KERN_INFO "%s: max request size: %dKiB\n", drive->name, |
826 | drive->queue->max_sectors / 2); | |
1da177e4 LT |
827 | |
828 | /* calculate drive capacity, and select LBA if possible */ | |
98416549 | 829 | init_idedisk_capacity(drive); |
1da177e4 LT |
830 | |
831 | /* limit drive capacity to 137GB if LBA48 cannot be used */ | |
832 | if (drive->addressing == 0 && drive->capacity64 > 1ULL << 28) { | |
833 | printk(KERN_WARNING "%s: cannot use LBA48 - full capacity " | |
834 | "%llu sectors (%llu MB)\n", | |
835 | drive->name, (unsigned long long)drive->capacity64, | |
836 | sectors_to_MB(drive->capacity64)); | |
837 | drive->capacity64 = 1ULL << 28; | |
838 | } | |
839 | ||
238e4f14 | 840 | if ((hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && drive->addressing) { |
1da177e4 | 841 | if (drive->capacity64 > 1ULL << 28) { |
98416549 BZ |
842 | printk(KERN_INFO "%s: cannot use LBA48 DMA - PIO mode" |
843 | " will be used for accessing sectors " | |
844 | "> %u\n", drive->name, 1 << 28); | |
1da177e4 LT |
845 | } else |
846 | drive->addressing = 0; | |
847 | } | |
848 | ||
849 | /* | |
850 | * if possible, give fdisk access to more of the drive, | |
851 | * by correcting bios_cyls: | |
852 | */ | |
98416549 BZ |
853 | capacity = idedisk_capacity(drive); |
854 | ||
1da177e4 LT |
855 | if (!drive->forced_geom) { |
856 | ||
857 | if (idedisk_supports_lba48(drive->id)) { | |
858 | /* compatibility */ | |
859 | drive->bios_sect = 63; | |
860 | drive->bios_head = 255; | |
861 | } | |
862 | ||
863 | if (drive->bios_sect && drive->bios_head) { | |
864 | unsigned int cap0 = capacity; /* truncate to 32 bits */ | |
865 | unsigned int cylsz, cyl; | |
866 | ||
867 | if (cap0 != capacity) | |
868 | drive->bios_cyl = 65535; | |
869 | else { | |
870 | cylsz = drive->bios_sect * drive->bios_head; | |
871 | cyl = cap0 / cylsz; | |
872 | if (cyl > 65535) | |
873 | cyl = 65535; | |
874 | if (cyl > drive->bios_cyl) | |
875 | drive->bios_cyl = cyl; | |
876 | } | |
877 | } | |
878 | } | |
879 | printk(KERN_INFO "%s: %llu sectors (%llu MB)", | |
880 | drive->name, capacity, sectors_to_MB(capacity)); | |
881 | ||
882 | /* Only print cache size when it was specified */ | |
883 | if (id->buf_size) | |
d12faa27 | 884 | printk(KERN_CONT " w/%dKiB Cache", id->buf_size / 2); |
1da177e4 | 885 | |
3ab7efe8 BZ |
886 | printk(KERN_CONT ", CHS=%d/%d/%d\n", |
887 | drive->bios_cyl, drive->bios_head, drive->bios_sect); | |
1da177e4 | 888 | |
1da177e4 LT |
889 | /* write cache enabled? */ |
890 | if ((id->csfo & 1) || (id->cfs_enable_1 & (1 << 5))) | |
891 | drive->wcache = 1; | |
892 | ||
893 | write_cache(drive, 1); | |
1da177e4 LT |
894 | } |
895 | ||
896 | static void ide_cacheflush_p(ide_drive_t *drive) | |
897 | { | |
898 | if (!drive->wcache || !ide_id_has_flush_cache(drive->id)) | |
899 | return; | |
900 | ||
901 | if (do_idedisk_flushcache(drive)) | |
902 | printk(KERN_INFO "%s: wcache flush failed!\n", drive->name); | |
903 | } | |
904 | ||
4031bbe4 | 905 | static void ide_disk_remove(ide_drive_t *drive) |
1da177e4 LT |
906 | { |
907 | struct ide_disk_obj *idkp = drive->driver_data; | |
908 | struct gendisk *g = idkp->disk; | |
909 | ||
7662d046 | 910 | ide_proc_unregister_driver(drive, idkp->driver); |
8604affd | 911 | |
1da177e4 LT |
912 | del_gendisk(g); |
913 | ||
d36fef6f BZ |
914 | ide_cacheflush_p(drive); |
915 | ||
1da177e4 | 916 | ide_disk_put(idkp); |
1da177e4 LT |
917 | } |
918 | ||
919 | static void ide_disk_release(struct kref *kref) | |
920 | { | |
921 | struct ide_disk_obj *idkp = to_ide_disk(kref); | |
922 | ide_drive_t *drive = idkp->drive; | |
923 | struct gendisk *g = idkp->disk; | |
924 | ||
925 | drive->driver_data = NULL; | |
1da177e4 LT |
926 | g->private_data = NULL; |
927 | put_disk(g); | |
928 | kfree(idkp); | |
929 | } | |
930 | ||
4031bbe4 | 931 | static int ide_disk_probe(ide_drive_t *drive); |
1da177e4 | 932 | |
0d2157f7 LT |
933 | /* |
934 | * On HPA drives the capacity needs to be | |
935 | * reinitilized on resume otherwise the disk | |
936 | * can not be used and a hard reset is required | |
937 | */ | |
938 | static void ide_disk_resume(ide_drive_t *drive) | |
939 | { | |
940 | if (idedisk_supports_hpa(drive->id)) | |
941 | init_idedisk_capacity(drive); | |
942 | } | |
943 | ||
4031bbe4 | 944 | static void ide_device_shutdown(ide_drive_t *drive) |
1da177e4 | 945 | { |
1da177e4 LT |
946 | #ifdef CONFIG_ALPHA |
947 | /* On Alpha, halt(8) doesn't actually turn the machine off, | |
948 | it puts you into the sort of firmware monitor. Typically, | |
949 | it's used to boot another kernel image, so it's not much | |
950 | different from reboot(8). Therefore, we don't need to | |
951 | spin down the disk in this case, especially since Alpha | |
952 | firmware doesn't handle disks in standby mode properly. | |
953 | On the other hand, it's reasonably safe to turn the power | |
954 | off when the shutdown process reaches the firmware prompt, | |
955 | as the firmware initialization takes rather long time - | |
956 | at least 10 seconds, which should be sufficient for | |
957 | the disk to expire its write cache. */ | |
958 | if (system_state != SYSTEM_POWER_OFF) { | |
959 | #else | |
960 | if (system_state == SYSTEM_RESTART) { | |
961 | #endif | |
962 | ide_cacheflush_p(drive); | |
963 | return; | |
964 | } | |
965 | ||
d12faa27 BZ |
966 | printk(KERN_INFO "Shutdown: %s\n", drive->name); |
967 | ||
4031bbe4 | 968 | drive->gendev.bus->suspend(&drive->gendev, PMSG_SUSPEND); |
1da177e4 LT |
969 | } |
970 | ||
1da177e4 | 971 | static ide_driver_t idedisk_driver = { |
1da177e4 | 972 | .gen_driver = { |
4ef3b8f4 | 973 | .owner = THIS_MODULE, |
8604affd BZ |
974 | .name = "ide-disk", |
975 | .bus = &ide_bus_type, | |
1da177e4 | 976 | }, |
4031bbe4 RK |
977 | .probe = ide_disk_probe, |
978 | .remove = ide_disk_remove, | |
0d2157f7 | 979 | .resume = ide_disk_resume, |
4031bbe4 | 980 | .shutdown = ide_device_shutdown, |
1da177e4 LT |
981 | .version = IDEDISK_VERSION, |
982 | .media = ide_disk, | |
1da177e4 | 983 | .supports_dsc_overlap = 0, |
1da177e4 LT |
984 | .do_request = ide_do_rw_disk, |
985 | .end_request = ide_end_request, | |
986 | .error = __ide_error, | |
987 | .abort = __ide_abort, | |
7662d046 | 988 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 989 | .proc = idedisk_proc, |
7662d046 | 990 | #endif |
1da177e4 LT |
991 | }; |
992 | ||
29ec683f BZ |
993 | static int idedisk_set_doorlock(ide_drive_t *drive, int on) |
994 | { | |
995 | ide_task_t task; | |
996 | ||
997 | memset(&task, 0, sizeof(task)); | |
998 | task.tf.command = on ? WIN_DOORLOCK : WIN_DOORUNLOCK; | |
657cc1a8 | 999 | task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
29ec683f BZ |
1000 | |
1001 | return ide_no_data_taskfile(drive, &task); | |
1002 | } | |
1003 | ||
1da177e4 LT |
1004 | static int idedisk_open(struct inode *inode, struct file *filp) |
1005 | { | |
1006 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1007 | struct ide_disk_obj *idkp; | |
1008 | ide_drive_t *drive; | |
1009 | ||
98416549 BZ |
1010 | idkp = ide_disk_get(disk); |
1011 | if (idkp == NULL) | |
1da177e4 LT |
1012 | return -ENXIO; |
1013 | ||
1014 | drive = idkp->drive; | |
1015 | ||
c94964a4 BZ |
1016 | idkp->openers++; |
1017 | ||
1018 | if (drive->removable && idkp->openers == 1) { | |
1da177e4 LT |
1019 | check_disk_change(inode->i_bdev); |
1020 | /* | |
1021 | * Ignore the return code from door_lock, | |
1022 | * since the open() has already succeeded, | |
1023 | * and the door_lock is irrelevant at this point. | |
1024 | */ | |
29ec683f | 1025 | if (drive->doorlocking && idedisk_set_doorlock(drive, 1)) |
1da177e4 LT |
1026 | drive->doorlocking = 0; |
1027 | } | |
1028 | return 0; | |
1029 | } | |
1030 | ||
1031 | static int idedisk_release(struct inode *inode, struct file *filp) | |
1032 | { | |
1033 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1034 | struct ide_disk_obj *idkp = ide_disk_g(disk); | |
1035 | ide_drive_t *drive = idkp->drive; | |
1036 | ||
c94964a4 | 1037 | if (idkp->openers == 1) |
1da177e4 | 1038 | ide_cacheflush_p(drive); |
c94964a4 BZ |
1039 | |
1040 | if (drive->removable && idkp->openers == 1) { | |
29ec683f | 1041 | if (drive->doorlocking && idedisk_set_doorlock(drive, 0)) |
1da177e4 LT |
1042 | drive->doorlocking = 0; |
1043 | } | |
c94964a4 BZ |
1044 | |
1045 | idkp->openers--; | |
1da177e4 LT |
1046 | |
1047 | ide_disk_put(idkp); | |
1048 | ||
1049 | return 0; | |
1050 | } | |
1051 | ||
a885c8c4 CH |
1052 | static int idedisk_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
1053 | { | |
1054 | struct ide_disk_obj *idkp = ide_disk_g(bdev->bd_disk); | |
1055 | ide_drive_t *drive = idkp->drive; | |
1056 | ||
1057 | geo->heads = drive->bios_head; | |
1058 | geo->sectors = drive->bios_sect; | |
1059 | geo->cylinders = (u16)drive->bios_cyl; /* truncate */ | |
1060 | return 0; | |
1061 | } | |
1062 | ||
1da177e4 LT |
1063 | static int idedisk_ioctl(struct inode *inode, struct file *file, |
1064 | unsigned int cmd, unsigned long arg) | |
1065 | { | |
1497943e | 1066 | unsigned long flags; |
1da177e4 LT |
1067 | struct block_device *bdev = inode->i_bdev; |
1068 | struct ide_disk_obj *idkp = ide_disk_g(bdev->bd_disk); | |
1497943e BZ |
1069 | ide_drive_t *drive = idkp->drive; |
1070 | int err, (*setfunc)(ide_drive_t *, int); | |
1071 | u8 *val; | |
1072 | ||
1073 | switch (cmd) { | |
1074 | case HDIO_GET_ADDRESS: val = &drive->addressing; goto read_val; | |
1075 | case HDIO_GET_MULTCOUNT: val = &drive->mult_count; goto read_val; | |
1076 | case HDIO_GET_NOWERR: val = &drive->nowerr; goto read_val; | |
1077 | case HDIO_GET_WCACHE: val = &drive->wcache; goto read_val; | |
1078 | case HDIO_GET_ACOUSTIC: val = &drive->acoustic; goto read_val; | |
1079 | case HDIO_SET_ADDRESS: setfunc = set_lba_addressing; goto set_val; | |
1080 | case HDIO_SET_MULTCOUNT: setfunc = set_multcount; goto set_val; | |
1081 | case HDIO_SET_NOWERR: setfunc = set_nowerr; goto set_val; | |
1082 | case HDIO_SET_WCACHE: setfunc = write_cache; goto set_val; | |
1083 | case HDIO_SET_ACOUSTIC: setfunc = set_acoustic; goto set_val; | |
1084 | } | |
1085 | ||
1086 | return generic_ide_ioctl(drive, file, bdev, cmd, arg); | |
1087 | ||
1088 | read_val: | |
f9383c42 | 1089 | mutex_lock(&ide_setting_mtx); |
1497943e BZ |
1090 | spin_lock_irqsave(&ide_lock, flags); |
1091 | err = *val; | |
1092 | spin_unlock_irqrestore(&ide_lock, flags); | |
f9383c42 | 1093 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
1094 | return err >= 0 ? put_user(err, (long __user *)arg) : err; |
1095 | ||
1096 | set_val: | |
1097 | if (bdev != bdev->bd_contains) | |
1098 | err = -EINVAL; | |
1099 | else { | |
1100 | if (!capable(CAP_SYS_ADMIN)) | |
1101 | err = -EACCES; | |
1102 | else { | |
f9383c42 | 1103 | mutex_lock(&ide_setting_mtx); |
1497943e | 1104 | err = setfunc(drive, arg); |
f9383c42 | 1105 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
1106 | } |
1107 | } | |
1108 | return err; | |
1da177e4 LT |
1109 | } |
1110 | ||
1111 | static int idedisk_media_changed(struct gendisk *disk) | |
1112 | { | |
1113 | struct ide_disk_obj *idkp = ide_disk_g(disk); | |
1114 | ide_drive_t *drive = idkp->drive; | |
1115 | ||
1116 | /* do not scan partitions twice if this is a removable device */ | |
1117 | if (drive->attach) { | |
1118 | drive->attach = 0; | |
1119 | return 0; | |
1120 | } | |
1121 | /* if removable, always assume it was changed */ | |
1122 | return drive->removable; | |
1123 | } | |
1124 | ||
1125 | static int idedisk_revalidate_disk(struct gendisk *disk) | |
1126 | { | |
1127 | struct ide_disk_obj *idkp = ide_disk_g(disk); | |
1128 | set_capacity(disk, idedisk_capacity(idkp->drive)); | |
1129 | return 0; | |
1130 | } | |
1131 | ||
1132 | static struct block_device_operations idedisk_ops = { | |
98416549 BZ |
1133 | .owner = THIS_MODULE, |
1134 | .open = idedisk_open, | |
1135 | .release = idedisk_release, | |
1136 | .ioctl = idedisk_ioctl, | |
1137 | .getgeo = idedisk_getgeo, | |
1138 | .media_changed = idedisk_media_changed, | |
1139 | .revalidate_disk = idedisk_revalidate_disk | |
1da177e4 LT |
1140 | }; |
1141 | ||
1142 | MODULE_DESCRIPTION("ATA DISK Driver"); | |
1143 | ||
4031bbe4 | 1144 | static int ide_disk_probe(ide_drive_t *drive) |
1da177e4 LT |
1145 | { |
1146 | struct ide_disk_obj *idkp; | |
1147 | struct gendisk *g; | |
1148 | ||
1149 | /* strstr("foo", "") is non-NULL */ | |
1150 | if (!strstr("ide-disk", drive->driver_req)) | |
1151 | goto failed; | |
1152 | if (!drive->present) | |
1153 | goto failed; | |
1154 | if (drive->media != ide_disk) | |
1155 | goto failed; | |
1156 | ||
f5e3c2fa | 1157 | idkp = kzalloc(sizeof(*idkp), GFP_KERNEL); |
1da177e4 LT |
1158 | if (!idkp) |
1159 | goto failed; | |
1160 | ||
1946089a | 1161 | g = alloc_disk_node(1 << PARTN_BITS, |
86b37860 | 1162 | hwif_to_node(drive->hwif)); |
1da177e4 LT |
1163 | if (!g) |
1164 | goto out_free_idkp; | |
1165 | ||
1166 | ide_init_disk(g, drive); | |
1167 | ||
7662d046 | 1168 | ide_proc_register_driver(drive, &idedisk_driver); |
1da177e4 | 1169 | |
1da177e4 LT |
1170 | kref_init(&idkp->kref); |
1171 | ||
1172 | idkp->drive = drive; | |
1173 | idkp->driver = &idedisk_driver; | |
1174 | idkp->disk = g; | |
1175 | ||
1176 | g->private_data = &idkp->driver; | |
1177 | ||
1178 | drive->driver_data = idkp; | |
1179 | ||
1da177e4 LT |
1180 | idedisk_setup(drive); |
1181 | if ((!drive->head || drive->head > 16) && !drive->select.b.lba) { | |
1182 | printk(KERN_ERR "%s: INVALID GEOMETRY: %d PHYSICAL HEADS?\n", | |
1183 | drive->name, drive->head); | |
1184 | drive->attach = 0; | |
1185 | } else | |
1186 | drive->attach = 1; | |
8604affd | 1187 | |
1da177e4 | 1188 | g->minors = 1 << PARTN_BITS; |
1da177e4 LT |
1189 | g->driverfs_dev = &drive->gendev; |
1190 | g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; | |
1191 | set_capacity(g, idedisk_capacity(drive)); | |
1192 | g->fops = &idedisk_ops; | |
1193 | add_disk(g); | |
1194 | return 0; | |
1195 | ||
1da177e4 LT |
1196 | out_free_idkp: |
1197 | kfree(idkp); | |
1198 | failed: | |
8604affd | 1199 | return -ENODEV; |
1da177e4 LT |
1200 | } |
1201 | ||
98416549 | 1202 | static void __exit idedisk_exit(void) |
1da177e4 | 1203 | { |
8604affd | 1204 | driver_unregister(&idedisk_driver.gen_driver); |
1da177e4 LT |
1205 | } |
1206 | ||
17514e8a | 1207 | static int __init idedisk_init(void) |
1da177e4 | 1208 | { |
8604affd | 1209 | return driver_register(&idedisk_driver.gen_driver); |
1da177e4 LT |
1210 | } |
1211 | ||
263756ec | 1212 | MODULE_ALIAS("ide:*m-disk*"); |
1da177e4 LT |
1213 | module_init(idedisk_init); |
1214 | module_exit(idedisk_exit); | |
1215 | MODULE_LICENSE("GPL"); |