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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 | ||
870d6656 | 44 | #if !defined(CONFIG_DEBUG_BLOCK_EXT_DEVT) |
689d6fac | 45 | #define IDE_DISK_MINORS (1 << PARTN_BITS) |
870d6656 | 46 | #else |
3e1a7ff8 | 47 | #define IDE_DISK_MINORS 0 |
870d6656 TH |
48 | #endif |
49 | ||
1da177e4 LT |
50 | struct ide_disk_obj { |
51 | ide_drive_t *drive; | |
52 | ide_driver_t *driver; | |
53 | struct gendisk *disk; | |
54 | struct kref kref; | |
c94964a4 | 55 | unsigned int openers; /* protected by BKL for now */ |
1da177e4 LT |
56 | }; |
57 | ||
cf8b8975 | 58 | static DEFINE_MUTEX(idedisk_ref_mutex); |
1da177e4 LT |
59 | |
60 | #define to_ide_disk(obj) container_of(obj, struct ide_disk_obj, kref) | |
61 | ||
62 | #define ide_disk_g(disk) \ | |
63 | container_of((disk)->private_data, struct ide_disk_obj, driver) | |
64 | ||
08da591e BZ |
65 | static void ide_disk_release(struct kref *); |
66 | ||
1da177e4 LT |
67 | static struct ide_disk_obj *ide_disk_get(struct gendisk *disk) |
68 | { | |
69 | struct ide_disk_obj *idkp = NULL; | |
70 | ||
cf8b8975 | 71 | mutex_lock(&idedisk_ref_mutex); |
1da177e4 | 72 | idkp = ide_disk_g(disk); |
08da591e | 73 | if (idkp) { |
d3e33ff5 | 74 | if (ide_device_get(idkp->drive)) |
08da591e | 75 | idkp = NULL; |
d3e33ff5 BZ |
76 | else |
77 | kref_get(&idkp->kref); | |
08da591e | 78 | } |
cf8b8975 | 79 | mutex_unlock(&idedisk_ref_mutex); |
1da177e4 LT |
80 | return idkp; |
81 | } | |
82 | ||
1da177e4 LT |
83 | static void ide_disk_put(struct ide_disk_obj *idkp) |
84 | { | |
d3e33ff5 BZ |
85 | ide_drive_t *drive = idkp->drive; |
86 | ||
cf8b8975 | 87 | mutex_lock(&idedisk_ref_mutex); |
1da177e4 | 88 | kref_put(&idkp->kref, ide_disk_release); |
d3e33ff5 | 89 | ide_device_put(drive); |
cf8b8975 | 90 | mutex_unlock(&idedisk_ref_mutex); |
1da177e4 LT |
91 | } |
92 | ||
93 | /* | |
94 | * lba_capacity_is_ok() performs a sanity check on the claimed "lba_capacity" | |
95 | * value for this drive (from its reported identification information). | |
96 | * | |
97 | * Returns: 1 if lba_capacity looks sensible | |
98 | * 0 otherwise | |
99 | * | |
100 | * It is called only once for each drive. | |
101 | */ | |
98416549 | 102 | static int lba_capacity_is_ok(struct hd_driveid *id) |
1da177e4 LT |
103 | { |
104 | unsigned long lba_sects, chs_sects, head, tail; | |
105 | ||
6efd9360 AC |
106 | /* No non-LBA info .. so valid! */ |
107 | if (id->cyls == 0) | |
108 | return 1; | |
109 | ||
1da177e4 LT |
110 | /* |
111 | * The ATA spec tells large drives to return | |
112 | * C/H/S = 16383/16/63 independent of their size. | |
113 | * Some drives can be jumpered to use 15 heads instead of 16. | |
114 | * Some drives can be jumpered to use 4092 cyls instead of 16383. | |
115 | */ | |
116 | if ((id->cyls == 16383 | |
117 | || (id->cyls == 4092 && id->cur_cyls == 16383)) && | |
118 | id->sectors == 63 && | |
119 | (id->heads == 15 || id->heads == 16) && | |
120 | (id->lba_capacity >= 16383*63*id->heads)) | |
121 | return 1; | |
122 | ||
123 | lba_sects = id->lba_capacity; | |
124 | chs_sects = id->cyls * id->heads * id->sectors; | |
125 | ||
126 | /* perform a rough sanity check on lba_sects: within 10% is OK */ | |
127 | if ((lba_sects - chs_sects) < chs_sects/10) | |
128 | return 1; | |
129 | ||
130 | /* some drives have the word order reversed */ | |
131 | head = ((lba_sects >> 16) & 0xffff); | |
132 | tail = (lba_sects & 0xffff); | |
133 | lba_sects = (head | (tail << 16)); | |
134 | if ((lba_sects - chs_sects) < chs_sects/10) { | |
135 | id->lba_capacity = lba_sects; | |
136 | return 1; /* lba_capacity is (now) good */ | |
137 | } | |
138 | ||
139 | return 0; /* lba_capacity value may be bad */ | |
140 | } | |
141 | ||
ba76ae38 BZ |
142 | static const u8 ide_rw_cmds[] = { |
143 | WIN_MULTREAD, | |
144 | WIN_MULTWRITE, | |
145 | WIN_MULTREAD_EXT, | |
146 | WIN_MULTWRITE_EXT, | |
147 | WIN_READ, | |
148 | WIN_WRITE, | |
149 | WIN_READ_EXT, | |
150 | WIN_WRITE_EXT, | |
151 | WIN_READDMA, | |
152 | WIN_WRITEDMA, | |
153 | WIN_READDMA_EXT, | |
154 | WIN_WRITEDMA_EXT, | |
155 | }; | |
156 | ||
157 | static const u8 ide_data_phases[] = { | |
158 | TASKFILE_MULTI_IN, | |
159 | TASKFILE_MULTI_OUT, | |
160 | TASKFILE_IN, | |
161 | TASKFILE_OUT, | |
162 | TASKFILE_IN_DMA, | |
163 | TASKFILE_OUT_DMA, | |
164 | }; | |
165 | ||
166 | static void ide_tf_set_cmd(ide_drive_t *drive, ide_task_t *task, u8 dma) | |
167 | { | |
168 | u8 index, lba48, write; | |
169 | ||
170 | lba48 = (task->tf_flags & IDE_TFLAG_LBA48) ? 2 : 0; | |
171 | write = (task->tf_flags & IDE_TFLAG_WRITE) ? 1 : 0; | |
172 | ||
173 | if (dma) | |
ba4b2e60 | 174 | index = 8; |
ba76ae38 BZ |
175 | else |
176 | index = drive->mult_count ? 0 : 4; | |
177 | ||
178 | task->tf.command = ide_rw_cmds[index + lba48 + write]; | |
179 | ||
180 | if (dma) | |
181 | index = 8; /* fixup index */ | |
182 | ||
183 | task->data_phase = ide_data_phases[index / 2 + write]; | |
184 | } | |
185 | ||
1da177e4 LT |
186 | /* |
187 | * __ide_do_rw_disk() issues READ and WRITE commands to a disk, | |
188 | * using LBA if supported, or CHS otherwise, to address sectors. | |
189 | */ | |
98416549 BZ |
190 | static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq, |
191 | sector_t block) | |
1da177e4 LT |
192 | { |
193 | ide_hwif_t *hwif = HWIF(drive); | |
194 | unsigned int dma = drive->using_dma; | |
790d1239 | 195 | u16 nsectors = (u16)rq->nr_sectors; |
1da177e4 | 196 | u8 lba48 = (drive->addressing == 1) ? 1 : 0; |
9e42237f BZ |
197 | ide_task_t task; |
198 | struct ide_taskfile *tf = &task.tf; | |
f6e29e35 | 199 | ide_startstop_t rc; |
1da177e4 | 200 | |
238e4f14 | 201 | if ((hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && lba48 && dma) { |
1da177e4 LT |
202 | if (block + rq->nr_sectors > 1ULL << 28) |
203 | dma = 0; | |
204 | else | |
205 | lba48 = 0; | |
206 | } | |
207 | ||
208 | if (!dma) { | |
209 | ide_init_sg_cmd(drive, rq); | |
210 | ide_map_sg(drive, rq); | |
211 | } | |
212 | ||
9e42237f | 213 | memset(&task, 0, sizeof(task)); |
9a410e79 | 214 | task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
2bd06b23 | 215 | |
1da177e4 LT |
216 | if (drive->select.b.lba) { |
217 | if (lba48) { | |
c2f8311d MR |
218 | pr_debug("%s: LBA=0x%012llx\n", drive->name, |
219 | (unsigned long long)block); | |
1da177e4 | 220 | |
790d1239 | 221 | tf->hob_nsect = (nsectors >> 8) & 0xff; |
2bd06b23 BZ |
222 | tf->hob_lbal = (u8)(block >> 24); |
223 | if (sizeof(block) != 4) { | |
224 | tf->hob_lbam = (u8)((u64)block >> 32); | |
225 | tf->hob_lbah = (u8)((u64)block >> 40); | |
1da177e4 | 226 | } |
2bd06b23 | 227 | |
790d1239 | 228 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
229 | tf->lbal = (u8) block; |
230 | tf->lbam = (u8)(block >> 8); | |
231 | tf->lbah = (u8)(block >> 16); | |
6dd9b837 | 232 | |
657cc1a8 | 233 | task.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB); |
1da177e4 | 234 | } else { |
790d1239 | 235 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
236 | tf->lbal = block; |
237 | tf->lbam = block >>= 8; | |
238 | tf->lbah = block >>= 8; | |
239 | tf->device = (block >> 8) & 0xf; | |
1da177e4 LT |
240 | } |
241 | } else { | |
98416549 BZ |
242 | unsigned int sect, head, cyl, track; |
243 | ||
1da177e4 LT |
244 | track = (int)block / drive->sect; |
245 | sect = (int)block % drive->sect + 1; | |
1da177e4 LT |
246 | head = track % drive->head; |
247 | cyl = track / drive->head; | |
248 | ||
249 | pr_debug("%s: CHS=%u/%u/%u\n", drive->name, cyl, head, sect); | |
250 | ||
790d1239 | 251 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
252 | tf->lbal = sect; |
253 | tf->lbam = cyl; | |
254 | tf->lbah = cyl >> 8; | |
255 | tf->device = head; | |
1da177e4 LT |
256 | } |
257 | ||
ba76ae38 BZ |
258 | if (rq_data_dir(rq)) |
259 | task.tf_flags |= IDE_TFLAG_WRITE; | |
260 | ||
261 | ide_tf_set_cmd(drive, &task, dma); | |
f6e29e35 BZ |
262 | if (!dma) |
263 | hwif->data_phase = task.data_phase; | |
264 | task.rq = rq; | |
ba76ae38 | 265 | |
f6e29e35 | 266 | rc = do_rw_taskfile(drive, &task); |
2bd06b23 | 267 | |
f6e29e35 | 268 | if (rc == ide_stopped && dma) { |
1da177e4 | 269 | /* fallback to PIO */ |
f6e29e35 | 270 | task.tf_flags |= IDE_TFLAG_DMA_PIO_FALLBACK; |
ba76ae38 | 271 | ide_tf_set_cmd(drive, &task, 0); |
f6e29e35 | 272 | hwif->data_phase = task.data_phase; |
1da177e4 | 273 | ide_init_sg_cmd(drive, rq); |
f6e29e35 | 274 | rc = do_rw_taskfile(drive, &task); |
1da177e4 LT |
275 | } |
276 | ||
f6e29e35 | 277 | return rc; |
1da177e4 LT |
278 | } |
279 | ||
280 | /* | |
281 | * 268435455 == 137439 MB or 28bit limit | |
282 | * 320173056 == 163929 MB or 48bit addressing | |
283 | * 1073741822 == 549756 MB or 48bit addressing fake drive | |
284 | */ | |
285 | ||
98416549 BZ |
286 | static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq, |
287 | sector_t block) | |
1da177e4 LT |
288 | { |
289 | ide_hwif_t *hwif = HWIF(drive); | |
290 | ||
291 | BUG_ON(drive->blocked); | |
292 | ||
293 | if (!blk_fs_request(rq)) { | |
294 | blk_dump_rq_flags(rq, "ide_do_rw_disk - bad command"); | |
295 | ide_end_request(drive, 0, 0); | |
296 | return ide_stopped; | |
297 | } | |
298 | ||
2bfb646c RP |
299 | ledtrig_ide_activity(); |
300 | ||
1da177e4 LT |
301 | pr_debug("%s: %sing: block=%llu, sectors=%lu, buffer=0x%08lx\n", |
302 | drive->name, rq_data_dir(rq) == READ ? "read" : "writ", | |
c2f8311d MR |
303 | (unsigned long long)block, rq->nr_sectors, |
304 | (unsigned long)rq->buffer); | |
1da177e4 LT |
305 | |
306 | if (hwif->rw_disk) | |
307 | hwif->rw_disk(drive, rq); | |
308 | ||
309 | return __ide_do_rw_disk(drive, rq, block); | |
310 | } | |
311 | ||
312 | /* | |
313 | * Queries for true maximum capacity of the drive. | |
314 | * Returns maximum LBA address (> 0) of the drive, 0 if failed. | |
315 | */ | |
7a3b7512 | 316 | static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48) |
1da177e4 LT |
317 | { |
318 | ide_task_t args; | |
650d841d | 319 | struct ide_taskfile *tf = &args.tf; |
7a3b7512 | 320 | u64 addr = 0; |
1da177e4 LT |
321 | |
322 | /* Create IDE/ATA command request structure */ | |
323 | memset(&args, 0, sizeof(ide_task_t)); | |
7a3b7512 BZ |
324 | if (lba48) |
325 | tf->command = WIN_READ_NATIVE_MAX_EXT; | |
326 | else | |
327 | tf->command = WIN_READ_NATIVE_MAX; | |
650d841d | 328 | tf->device = ATA_LBA; |
657cc1a8 | 329 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
a3bbb9d8 | 330 | if (lba48) |
657cc1a8 | 331 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB); |
1da177e4 | 332 | /* submit command request */ |
9a3c49be | 333 | ide_no_data_taskfile(drive, &args); |
1da177e4 | 334 | |
1da177e4 | 335 | /* if OK, compute maximum address value */ |
a501633c BZ |
336 | if ((tf->status & 0x01) == 0) |
337 | addr = ide_get_lba_addr(tf, lba48) + 1; | |
650d841d | 338 | |
1da177e4 LT |
339 | return addr; |
340 | } | |
341 | ||
342 | /* | |
343 | * Sets maximum virtual LBA address of the drive. | |
344 | * Returns new maximum virtual LBA address (> 0) or 0 on failure. | |
345 | */ | |
7a3b7512 | 346 | static u64 idedisk_set_max_address(ide_drive_t *drive, u64 addr_req, int lba48) |
1da177e4 LT |
347 | { |
348 | ide_task_t args; | |
650d841d | 349 | struct ide_taskfile *tf = &args.tf; |
7a3b7512 | 350 | u64 addr_set = 0; |
1da177e4 LT |
351 | |
352 | addr_req--; | |
353 | /* Create IDE/ATA command request structure */ | |
354 | memset(&args, 0, sizeof(ide_task_t)); | |
650d841d BZ |
355 | tf->lbal = (addr_req >> 0) & 0xff; |
356 | tf->lbam = (addr_req >>= 8) & 0xff; | |
357 | tf->lbah = (addr_req >>= 8) & 0xff; | |
7a3b7512 BZ |
358 | if (lba48) { |
359 | tf->hob_lbal = (addr_req >>= 8) & 0xff; | |
360 | tf->hob_lbam = (addr_req >>= 8) & 0xff; | |
361 | tf->hob_lbah = (addr_req >>= 8) & 0xff; | |
362 | tf->command = WIN_SET_MAX_EXT; | |
363 | } else { | |
364 | tf->device = (addr_req >>= 8) & 0x0f; | |
365 | tf->command = WIN_SET_MAX; | |
366 | } | |
367 | tf->device |= ATA_LBA; | |
657cc1a8 | 368 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
a3bbb9d8 | 369 | if (lba48) |
657cc1a8 | 370 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB); |
1da177e4 | 371 | /* submit command request */ |
9a3c49be | 372 | ide_no_data_taskfile(drive, &args); |
1da177e4 | 373 | /* if OK, compute maximum address value */ |
a501633c BZ |
374 | if ((tf->status & 0x01) == 0) |
375 | addr_set = ide_get_lba_addr(tf, lba48) + 1; | |
650d841d | 376 | |
1da177e4 LT |
377 | return addr_set; |
378 | } | |
379 | ||
380 | static unsigned long long sectors_to_MB(unsigned long long n) | |
381 | { | |
382 | n <<= 9; /* make it bytes */ | |
383 | do_div(n, 1000000); /* make it MB */ | |
384 | return n; | |
385 | } | |
386 | ||
387 | /* | |
388 | * Bits 10 of command_set_1 and cfs_enable_1 must be equal, | |
389 | * so on non-buggy drives we need test only one. | |
390 | * However, we should also check whether these fields are valid. | |
391 | */ | |
392 | static inline int idedisk_supports_hpa(const struct hd_driveid *id) | |
393 | { | |
394 | return (id->command_set_1 & 0x0400) && (id->cfs_enable_1 & 0x0400); | |
395 | } | |
396 | ||
397 | /* | |
398 | * The same here. | |
399 | */ | |
400 | static inline int idedisk_supports_lba48(const struct hd_driveid *id) | |
401 | { | |
402 | return (id->command_set_2 & 0x0400) && (id->cfs_enable_2 & 0x0400) | |
403 | && id->lba_capacity_2; | |
404 | } | |
405 | ||
b0244a00 BZ |
406 | /* |
407 | * Some disks report total number of sectors instead of | |
408 | * maximum sector address. We list them here. | |
409 | */ | |
410 | static const struct drive_list_entry hpa_list[] = { | |
411 | { "ST340823A", NULL }, | |
7062cdc5 | 412 | { "ST320413A", NULL }, |
b152fcd3 | 413 | { "ST310211A", NULL }, |
b0244a00 BZ |
414 | { NULL, NULL } |
415 | }; | |
416 | ||
858119e1 | 417 | static void idedisk_check_hpa(ide_drive_t *drive) |
1da177e4 LT |
418 | { |
419 | unsigned long long capacity, set_max; | |
420 | int lba48 = idedisk_supports_lba48(drive->id); | |
421 | ||
422 | capacity = drive->capacity64; | |
7a3b7512 BZ |
423 | |
424 | set_max = idedisk_read_native_max_address(drive, lba48); | |
1da177e4 | 425 | |
b0244a00 BZ |
426 | if (ide_in_drive_list(drive->id, hpa_list)) { |
427 | /* | |
428 | * Since we are inclusive wrt to firmware revisions do this | |
429 | * extra check and apply the workaround only when needed. | |
430 | */ | |
431 | if (set_max == capacity + 1) | |
432 | set_max--; | |
433 | } | |
434 | ||
1da177e4 LT |
435 | if (set_max <= capacity) |
436 | return; | |
437 | ||
438 | printk(KERN_INFO "%s: Host Protected Area detected.\n" | |
439 | "\tcurrent capacity is %llu sectors (%llu MB)\n" | |
440 | "\tnative capacity is %llu sectors (%llu MB)\n", | |
441 | drive->name, | |
442 | capacity, sectors_to_MB(capacity), | |
443 | set_max, sectors_to_MB(set_max)); | |
444 | ||
7a3b7512 BZ |
445 | set_max = idedisk_set_max_address(drive, set_max, lba48); |
446 | ||
1da177e4 LT |
447 | if (set_max) { |
448 | drive->capacity64 = set_max; | |
449 | printk(KERN_INFO "%s: Host Protected Area disabled.\n", | |
450 | drive->name); | |
451 | } | |
452 | } | |
453 | ||
98416549 | 454 | static void init_idedisk_capacity(ide_drive_t *drive) |
1da177e4 LT |
455 | { |
456 | struct hd_driveid *id = drive->id; | |
457 | /* | |
458 | * If this drive supports the Host Protected Area feature set, | |
459 | * then we may need to change our opinion about the drive's capacity. | |
460 | */ | |
461 | int hpa = idedisk_supports_hpa(id); | |
462 | ||
463 | if (idedisk_supports_lba48(id)) { | |
464 | /* drive speaks 48-bit LBA */ | |
465 | drive->select.b.lba = 1; | |
466 | drive->capacity64 = id->lba_capacity_2; | |
467 | if (hpa) | |
468 | idedisk_check_hpa(drive); | |
469 | } else if ((id->capability & 2) && lba_capacity_is_ok(id)) { | |
470 | /* drive speaks 28-bit LBA */ | |
471 | drive->select.b.lba = 1; | |
472 | drive->capacity64 = id->lba_capacity; | |
473 | if (hpa) | |
474 | idedisk_check_hpa(drive); | |
475 | } else { | |
476 | /* drive speaks boring old 28-bit CHS */ | |
477 | drive->capacity64 = drive->cyl * drive->head * drive->sect; | |
478 | } | |
479 | } | |
480 | ||
98416549 | 481 | static sector_t idedisk_capacity(ide_drive_t *drive) |
1da177e4 LT |
482 | { |
483 | return drive->capacity64 - drive->sect0; | |
484 | } | |
485 | ||
ecfd80e4 | 486 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
487 | static int smart_enable(ide_drive_t *drive) |
488 | { | |
489 | ide_task_t args; | |
650d841d | 490 | struct ide_taskfile *tf = &args.tf; |
1da177e4 LT |
491 | |
492 | memset(&args, 0, sizeof(ide_task_t)); | |
650d841d BZ |
493 | tf->feature = SMART_ENABLE; |
494 | tf->lbam = SMART_LCYL_PASS; | |
495 | tf->lbah = SMART_HCYL_PASS; | |
496 | tf->command = WIN_SMART; | |
657cc1a8 | 497 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
9a3c49be | 498 | return ide_no_data_taskfile(drive, &args); |
1da177e4 LT |
499 | } |
500 | ||
43e7c0c4 | 501 | static int get_smart_data(ide_drive_t *drive, u8 *buf, u8 sub_cmd) |
1da177e4 LT |
502 | { |
503 | ide_task_t args; | |
650d841d | 504 | struct ide_taskfile *tf = &args.tf; |
1da177e4 LT |
505 | |
506 | memset(&args, 0, sizeof(ide_task_t)); | |
650d841d BZ |
507 | tf->feature = sub_cmd; |
508 | tf->nsect = 0x01; | |
509 | tf->lbam = SMART_LCYL_PASS; | |
510 | tf->lbah = SMART_HCYL_PASS; | |
511 | tf->command = WIN_SMART; | |
657cc1a8 | 512 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
ac026ff2 | 513 | args.data_phase = TASKFILE_IN; |
1da177e4 | 514 | (void) smart_enable(drive); |
ac026ff2 | 515 | return ide_raw_taskfile(drive, &args, buf, 1); |
1da177e4 LT |
516 | } |
517 | ||
518 | static int proc_idedisk_read_cache | |
519 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
520 | { | |
521 | ide_drive_t *drive = (ide_drive_t *) data; | |
522 | char *out = page; | |
523 | int len; | |
524 | ||
525 | if (drive->id_read) | |
98416549 | 526 | len = sprintf(out, "%i\n", drive->id->buf_size / 2); |
1da177e4 | 527 | else |
98416549 BZ |
528 | len = sprintf(out, "(none)\n"); |
529 | ||
530 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1da177e4 LT |
531 | } |
532 | ||
533 | static int proc_idedisk_read_capacity | |
534 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
535 | { | |
536 | ide_drive_t*drive = (ide_drive_t *)data; | |
537 | int len; | |
538 | ||
98416549 BZ |
539 | len = sprintf(page, "%llu\n", (long long)idedisk_capacity(drive)); |
540 | ||
541 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1da177e4 LT |
542 | } |
543 | ||
799ee57a BZ |
544 | static int proc_idedisk_read_smart(char *page, char **start, off_t off, |
545 | int count, int *eof, void *data, u8 sub_cmd) | |
1da177e4 LT |
546 | { |
547 | ide_drive_t *drive = (ide_drive_t *)data; | |
548 | int len = 0, i = 0; | |
549 | ||
799ee57a | 550 | if (get_smart_data(drive, page, sub_cmd) == 0) { |
1da177e4 LT |
551 | unsigned short *val = (unsigned short *) page; |
552 | char *out = ((char *)val) + (SECTOR_WORDS * 4); | |
553 | page = out; | |
554 | do { | |
98416549 BZ |
555 | out += sprintf(out, "%04x%c", le16_to_cpu(*val), |
556 | (++i & 7) ? ' ' : '\n'); | |
1da177e4 LT |
557 | val += 1; |
558 | } while (i < (SECTOR_WORDS * 2)); | |
559 | len = out - page; | |
560 | } | |
98416549 BZ |
561 | |
562 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1da177e4 LT |
563 | } |
564 | ||
799ee57a | 565 | static int proc_idedisk_read_sv |
1da177e4 LT |
566 | (char *page, char **start, off_t off, int count, int *eof, void *data) |
567 | { | |
799ee57a BZ |
568 | return proc_idedisk_read_smart(page, start, off, count, eof, data, |
569 | SMART_READ_VALUES); | |
570 | } | |
1da177e4 | 571 | |
799ee57a BZ |
572 | static int proc_idedisk_read_st |
573 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
574 | { | |
575 | return proc_idedisk_read_smart(page, start, off, count, eof, data, | |
576 | SMART_READ_THRESHOLDS); | |
1da177e4 LT |
577 | } |
578 | ||
579 | static ide_proc_entry_t idedisk_proc[] = { | |
799ee57a BZ |
580 | { "cache", S_IFREG|S_IRUGO, proc_idedisk_read_cache, NULL }, |
581 | { "capacity", S_IFREG|S_IRUGO, proc_idedisk_read_capacity, NULL }, | |
582 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, | |
583 | { "smart_values", S_IFREG|S_IRUSR, proc_idedisk_read_sv, NULL }, | |
584 | { "smart_thresholds", S_IFREG|S_IRUSR, proc_idedisk_read_st, NULL }, | |
1da177e4 LT |
585 | { NULL, 0, NULL, NULL } |
586 | }; | |
ecfd80e4 | 587 | #endif /* CONFIG_IDE_PROC_FS */ |
1da177e4 | 588 | |
165125e1 | 589 | static void idedisk_prepare_flush(struct request_queue *q, struct request *rq) |
1da177e4 LT |
590 | { |
591 | ide_drive_t *drive = q->queuedata; | |
395d8ef5 | 592 | ide_task_t *task = kmalloc(sizeof(*task), GFP_ATOMIC); |
1da177e4 | 593 | |
395d8ef5 BZ |
594 | /* FIXME: map struct ide_taskfile on rq->cmd[] */ |
595 | BUG_ON(task == NULL); | |
596 | ||
597 | memset(task, 0, sizeof(*task)); | |
1da177e4 LT |
598 | if (ide_id_has_flush_cache_ext(drive->id) && |
599 | (drive->capacity64 >= (1UL << 28))) | |
395d8ef5 | 600 | task->tf.command = WIN_FLUSH_CACHE_EXT; |
1da177e4 | 601 | else |
395d8ef5 BZ |
602 | task->tf.command = WIN_FLUSH_CACHE; |
603 | task->tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE | | |
604 | IDE_TFLAG_DYN; | |
605 | task->data_phase = TASKFILE_NO_DATA; | |
1da177e4 | 606 | |
813a0eb2 | 607 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; |
4aff5e23 | 608 | rq->cmd_flags |= REQ_SOFTBARRIER; |
395d8ef5 | 609 | rq->special = task; |
1da177e4 LT |
610 | } |
611 | ||
1da177e4 LT |
612 | /* |
613 | * This is tightly woven into the driver->do_special can not touch. | |
614 | * DON'T do it again until a total personality rewrite is committed. | |
615 | */ | |
616 | static int set_multcount(ide_drive_t *drive, int arg) | |
617 | { | |
dd47087b FT |
618 | struct request *rq; |
619 | int error; | |
1da177e4 | 620 | |
1497943e BZ |
621 | if (arg < 0 || arg > drive->id->max_multsect) |
622 | return -EINVAL; | |
623 | ||
1da177e4 LT |
624 | if (drive->special.b.set_multmode) |
625 | return -EBUSY; | |
852738f3 | 626 | |
dd47087b FT |
627 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
628 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
852738f3 | 629 | |
1da177e4 LT |
630 | drive->mult_req = arg; |
631 | drive->special.b.set_multmode = 1; | |
dd47087b FT |
632 | error = blk_execute_rq(drive->queue, NULL, rq, 0); |
633 | blk_put_request(rq); | |
98416549 | 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, | |
7662d046 | 987 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 988 | .proc = idedisk_proc, |
7662d046 | 989 | #endif |
1da177e4 LT |
990 | }; |
991 | ||
29ec683f BZ |
992 | static int idedisk_set_doorlock(ide_drive_t *drive, int on) |
993 | { | |
994 | ide_task_t task; | |
995 | ||
996 | memset(&task, 0, sizeof(task)); | |
997 | task.tf.command = on ? WIN_DOORLOCK : WIN_DOORUNLOCK; | |
657cc1a8 | 998 | task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
29ec683f BZ |
999 | |
1000 | return ide_no_data_taskfile(drive, &task); | |
1001 | } | |
1002 | ||
1da177e4 LT |
1003 | static int idedisk_open(struct inode *inode, struct file *filp) |
1004 | { | |
1005 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1006 | struct ide_disk_obj *idkp; | |
1007 | ide_drive_t *drive; | |
1008 | ||
98416549 BZ |
1009 | idkp = ide_disk_get(disk); |
1010 | if (idkp == NULL) | |
1da177e4 LT |
1011 | return -ENXIO; |
1012 | ||
1013 | drive = idkp->drive; | |
1014 | ||
c94964a4 BZ |
1015 | idkp->openers++; |
1016 | ||
1017 | if (drive->removable && idkp->openers == 1) { | |
1da177e4 LT |
1018 | check_disk_change(inode->i_bdev); |
1019 | /* | |
1020 | * Ignore the return code from door_lock, | |
1021 | * since the open() has already succeeded, | |
1022 | * and the door_lock is irrelevant at this point. | |
1023 | */ | |
29ec683f | 1024 | if (drive->doorlocking && idedisk_set_doorlock(drive, 1)) |
1da177e4 LT |
1025 | drive->doorlocking = 0; |
1026 | } | |
1027 | return 0; | |
1028 | } | |
1029 | ||
1030 | static int idedisk_release(struct inode *inode, struct file *filp) | |
1031 | { | |
1032 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1033 | struct ide_disk_obj *idkp = ide_disk_g(disk); | |
1034 | ide_drive_t *drive = idkp->drive; | |
1035 | ||
c94964a4 | 1036 | if (idkp->openers == 1) |
1da177e4 | 1037 | ide_cacheflush_p(drive); |
c94964a4 BZ |
1038 | |
1039 | if (drive->removable && idkp->openers == 1) { | |
29ec683f | 1040 | if (drive->doorlocking && idedisk_set_doorlock(drive, 0)) |
1da177e4 LT |
1041 | drive->doorlocking = 0; |
1042 | } | |
c94964a4 BZ |
1043 | |
1044 | idkp->openers--; | |
1da177e4 LT |
1045 | |
1046 | ide_disk_put(idkp); | |
1047 | ||
1048 | return 0; | |
1049 | } | |
1050 | ||
a885c8c4 CH |
1051 | static int idedisk_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
1052 | { | |
1053 | struct ide_disk_obj *idkp = ide_disk_g(bdev->bd_disk); | |
1054 | ide_drive_t *drive = idkp->drive; | |
1055 | ||
1056 | geo->heads = drive->bios_head; | |
1057 | geo->sectors = drive->bios_sect; | |
1058 | geo->cylinders = (u16)drive->bios_cyl; /* truncate */ | |
1059 | return 0; | |
1060 | } | |
1061 | ||
1da177e4 LT |
1062 | static int idedisk_ioctl(struct inode *inode, struct file *file, |
1063 | unsigned int cmd, unsigned long arg) | |
1064 | { | |
1497943e | 1065 | unsigned long flags; |
1da177e4 LT |
1066 | struct block_device *bdev = inode->i_bdev; |
1067 | struct ide_disk_obj *idkp = ide_disk_g(bdev->bd_disk); | |
1497943e BZ |
1068 | ide_drive_t *drive = idkp->drive; |
1069 | int err, (*setfunc)(ide_drive_t *, int); | |
1070 | u8 *val; | |
1071 | ||
1072 | switch (cmd) { | |
1073 | case HDIO_GET_ADDRESS: val = &drive->addressing; goto read_val; | |
1074 | case HDIO_GET_MULTCOUNT: val = &drive->mult_count; goto read_val; | |
1075 | case HDIO_GET_NOWERR: val = &drive->nowerr; goto read_val; | |
1076 | case HDIO_GET_WCACHE: val = &drive->wcache; goto read_val; | |
1077 | case HDIO_GET_ACOUSTIC: val = &drive->acoustic; goto read_val; | |
1078 | case HDIO_SET_ADDRESS: setfunc = set_lba_addressing; goto set_val; | |
1079 | case HDIO_SET_MULTCOUNT: setfunc = set_multcount; goto set_val; | |
1080 | case HDIO_SET_NOWERR: setfunc = set_nowerr; goto set_val; | |
1081 | case HDIO_SET_WCACHE: setfunc = write_cache; goto set_val; | |
1082 | case HDIO_SET_ACOUSTIC: setfunc = set_acoustic; goto set_val; | |
1083 | } | |
1084 | ||
1085 | return generic_ide_ioctl(drive, file, bdev, cmd, arg); | |
1086 | ||
1087 | read_val: | |
f9383c42 | 1088 | mutex_lock(&ide_setting_mtx); |
1497943e BZ |
1089 | spin_lock_irqsave(&ide_lock, flags); |
1090 | err = *val; | |
1091 | spin_unlock_irqrestore(&ide_lock, flags); | |
f9383c42 | 1092 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
1093 | return err >= 0 ? put_user(err, (long __user *)arg) : err; |
1094 | ||
1095 | set_val: | |
1096 | if (bdev != bdev->bd_contains) | |
1097 | err = -EINVAL; | |
1098 | else { | |
1099 | if (!capable(CAP_SYS_ADMIN)) | |
1100 | err = -EACCES; | |
1101 | else { | |
f9383c42 | 1102 | mutex_lock(&ide_setting_mtx); |
1497943e | 1103 | err = setfunc(drive, arg); |
f9383c42 | 1104 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
1105 | } |
1106 | } | |
1107 | return err; | |
1da177e4 LT |
1108 | } |
1109 | ||
1110 | static int idedisk_media_changed(struct gendisk *disk) | |
1111 | { | |
1112 | struct ide_disk_obj *idkp = ide_disk_g(disk); | |
1113 | ide_drive_t *drive = idkp->drive; | |
1114 | ||
1115 | /* do not scan partitions twice if this is a removable device */ | |
1116 | if (drive->attach) { | |
1117 | drive->attach = 0; | |
1118 | return 0; | |
1119 | } | |
1120 | /* if removable, always assume it was changed */ | |
1121 | return drive->removable; | |
1122 | } | |
1123 | ||
1124 | static int idedisk_revalidate_disk(struct gendisk *disk) | |
1125 | { | |
1126 | struct ide_disk_obj *idkp = ide_disk_g(disk); | |
1127 | set_capacity(disk, idedisk_capacity(idkp->drive)); | |
1128 | return 0; | |
1129 | } | |
1130 | ||
1131 | static struct block_device_operations idedisk_ops = { | |
98416549 BZ |
1132 | .owner = THIS_MODULE, |
1133 | .open = idedisk_open, | |
1134 | .release = idedisk_release, | |
1135 | .ioctl = idedisk_ioctl, | |
1136 | .getgeo = idedisk_getgeo, | |
1137 | .media_changed = idedisk_media_changed, | |
1138 | .revalidate_disk = idedisk_revalidate_disk | |
1da177e4 LT |
1139 | }; |
1140 | ||
1141 | MODULE_DESCRIPTION("ATA DISK Driver"); | |
1142 | ||
4031bbe4 | 1143 | static int ide_disk_probe(ide_drive_t *drive) |
1da177e4 LT |
1144 | { |
1145 | struct ide_disk_obj *idkp; | |
1146 | struct gendisk *g; | |
1147 | ||
1148 | /* strstr("foo", "") is non-NULL */ | |
1149 | if (!strstr("ide-disk", drive->driver_req)) | |
1150 | goto failed; | |
1151 | if (!drive->present) | |
1152 | goto failed; | |
1153 | if (drive->media != ide_disk) | |
1154 | goto failed; | |
1155 | ||
f5e3c2fa | 1156 | idkp = kzalloc(sizeof(*idkp), GFP_KERNEL); |
1da177e4 LT |
1157 | if (!idkp) |
1158 | goto failed; | |
1159 | ||
689d6fac | 1160 | g = alloc_disk_node(IDE_DISK_MINORS, hwif_to_node(drive->hwif)); |
1da177e4 LT |
1161 | if (!g) |
1162 | goto out_free_idkp; | |
1163 | ||
1164 | ide_init_disk(g, drive); | |
1165 | ||
7662d046 | 1166 | ide_proc_register_driver(drive, &idedisk_driver); |
1da177e4 | 1167 | |
1da177e4 LT |
1168 | kref_init(&idkp->kref); |
1169 | ||
1170 | idkp->drive = drive; | |
1171 | idkp->driver = &idedisk_driver; | |
1172 | idkp->disk = g; | |
1173 | ||
1174 | g->private_data = &idkp->driver; | |
1175 | ||
1176 | drive->driver_data = idkp; | |
1177 | ||
1da177e4 LT |
1178 | idedisk_setup(drive); |
1179 | if ((!drive->head || drive->head > 16) && !drive->select.b.lba) { | |
1180 | printk(KERN_ERR "%s: INVALID GEOMETRY: %d PHYSICAL HEADS?\n", | |
1181 | drive->name, drive->head); | |
1182 | drive->attach = 0; | |
1183 | } else | |
1184 | drive->attach = 1; | |
8604affd | 1185 | |
f615b48c | 1186 | g->minors = IDE_DISK_MINORS; |
1da177e4 | 1187 | g->driverfs_dev = &drive->gendev; |
689d6fac TH |
1188 | g->flags |= GENHD_FL_EXT_DEVT; |
1189 | if (drive->removable) | |
1190 | g->flags |= GENHD_FL_REMOVABLE; | |
1da177e4 LT |
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"); |