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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 | 33 | #include <linux/ide.h> |
3ceca727 | 34 | #include <linux/hdreg.h> |
1da177e4 LT |
35 | |
36 | #include <asm/byteorder.h> | |
37 | #include <asm/irq.h> | |
38 | #include <asm/uaccess.h> | |
39 | #include <asm/io.h> | |
40 | #include <asm/div64.h> | |
41 | ||
870d6656 | 42 | #if !defined(CONFIG_DEBUG_BLOCK_EXT_DEVT) |
689d6fac | 43 | #define IDE_DISK_MINORS (1 << PARTN_BITS) |
870d6656 | 44 | #else |
3e1a7ff8 | 45 | #define IDE_DISK_MINORS 0 |
870d6656 TH |
46 | #endif |
47 | ||
1da177e4 LT |
48 | struct ide_disk_obj { |
49 | ide_drive_t *drive; | |
50 | ide_driver_t *driver; | |
51 | struct gendisk *disk; | |
52 | struct kref kref; | |
c94964a4 | 53 | unsigned int openers; /* protected by BKL for now */ |
1da177e4 LT |
54 | }; |
55 | ||
cf8b8975 | 56 | static DEFINE_MUTEX(idedisk_ref_mutex); |
1da177e4 LT |
57 | |
58 | #define to_ide_disk(obj) container_of(obj, struct ide_disk_obj, kref) | |
59 | ||
60 | #define ide_disk_g(disk) \ | |
61 | container_of((disk)->private_data, struct ide_disk_obj, driver) | |
62 | ||
08da591e BZ |
63 | static void ide_disk_release(struct kref *); |
64 | ||
1da177e4 LT |
65 | static struct ide_disk_obj *ide_disk_get(struct gendisk *disk) |
66 | { | |
67 | struct ide_disk_obj *idkp = NULL; | |
68 | ||
cf8b8975 | 69 | mutex_lock(&idedisk_ref_mutex); |
1da177e4 | 70 | idkp = ide_disk_g(disk); |
08da591e | 71 | if (idkp) { |
d3e33ff5 | 72 | if (ide_device_get(idkp->drive)) |
08da591e | 73 | idkp = NULL; |
d3e33ff5 BZ |
74 | else |
75 | kref_get(&idkp->kref); | |
08da591e | 76 | } |
cf8b8975 | 77 | mutex_unlock(&idedisk_ref_mutex); |
1da177e4 LT |
78 | return idkp; |
79 | } | |
80 | ||
1da177e4 LT |
81 | static void ide_disk_put(struct ide_disk_obj *idkp) |
82 | { | |
d3e33ff5 BZ |
83 | ide_drive_t *drive = idkp->drive; |
84 | ||
cf8b8975 | 85 | mutex_lock(&idedisk_ref_mutex); |
1da177e4 | 86 | kref_put(&idkp->kref, ide_disk_release); |
d3e33ff5 | 87 | ide_device_put(drive); |
cf8b8975 | 88 | mutex_unlock(&idedisk_ref_mutex); |
1da177e4 LT |
89 | } |
90 | ||
91 | /* | |
92 | * lba_capacity_is_ok() performs a sanity check on the claimed "lba_capacity" | |
93 | * value for this drive (from its reported identification information). | |
94 | * | |
95 | * Returns: 1 if lba_capacity looks sensible | |
96 | * 0 otherwise | |
97 | * | |
98 | * It is called only once for each drive. | |
99 | */ | |
4dde4492 | 100 | static int lba_capacity_is_ok(u16 *id) |
1da177e4 LT |
101 | { |
102 | unsigned long lba_sects, chs_sects, head, tail; | |
103 | ||
6efd9360 | 104 | /* No non-LBA info .. so valid! */ |
4dde4492 | 105 | if (id[ATA_ID_CYLS] == 0) |
6efd9360 AC |
106 | return 1; |
107 | ||
48fb2688 BZ |
108 | lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY); |
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 | */ | |
4dde4492 BZ |
116 | if ((id[ATA_ID_CYLS] == 16383 || |
117 | (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) && | |
118 | id[ATA_ID_SECTORS] == 63 && | |
119 | (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) && | |
48fb2688 | 120 | (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS])) |
1da177e4 LT |
121 | return 1; |
122 | ||
4dde4492 | 123 | chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS]; |
1da177e4 LT |
124 | |
125 | /* perform a rough sanity check on lba_sects: within 10% is OK */ | |
126 | if ((lba_sects - chs_sects) < chs_sects/10) | |
127 | return 1; | |
128 | ||
129 | /* some drives have the word order reversed */ | |
130 | head = ((lba_sects >> 16) & 0xffff); | |
131 | tail = (lba_sects & 0xffff); | |
132 | lba_sects = (head | (tail << 16)); | |
133 | if ((lba_sects - chs_sects) < chs_sects/10) { | |
48fb2688 | 134 | *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects); |
1da177e4 LT |
135 | return 1; /* lba_capacity is (now) good */ |
136 | } | |
137 | ||
138 | return 0; /* lba_capacity value may be bad */ | |
139 | } | |
140 | ||
ba76ae38 | 141 | static const u8 ide_rw_cmds[] = { |
aaaade3f BZ |
142 | ATA_CMD_READ_MULTI, |
143 | ATA_CMD_WRITE_MULTI, | |
144 | ATA_CMD_READ_MULTI_EXT, | |
145 | ATA_CMD_WRITE_MULTI_EXT, | |
146 | ATA_CMD_PIO_READ, | |
147 | ATA_CMD_PIO_WRITE, | |
148 | ATA_CMD_PIO_READ_EXT, | |
149 | ATA_CMD_PIO_WRITE_EXT, | |
150 | ATA_CMD_READ, | |
151 | ATA_CMD_WRITE, | |
152 | ATA_CMD_READ_EXT, | |
153 | ATA_CMD_WRITE_EXT, | |
ba76ae38 BZ |
154 | }; |
155 | ||
156 | static const u8 ide_data_phases[] = { | |
157 | TASKFILE_MULTI_IN, | |
158 | TASKFILE_MULTI_OUT, | |
159 | TASKFILE_IN, | |
160 | TASKFILE_OUT, | |
161 | TASKFILE_IN_DMA, | |
162 | TASKFILE_OUT_DMA, | |
163 | }; | |
164 | ||
165 | static void ide_tf_set_cmd(ide_drive_t *drive, ide_task_t *task, u8 dma) | |
166 | { | |
167 | u8 index, lba48, write; | |
168 | ||
169 | lba48 = (task->tf_flags & IDE_TFLAG_LBA48) ? 2 : 0; | |
170 | write = (task->tf_flags & IDE_TFLAG_WRITE) ? 1 : 0; | |
171 | ||
172 | if (dma) | |
ba4b2e60 | 173 | index = 8; |
ba76ae38 BZ |
174 | else |
175 | index = drive->mult_count ? 0 : 4; | |
176 | ||
177 | task->tf.command = ide_rw_cmds[index + lba48 + write]; | |
178 | ||
179 | if (dma) | |
180 | index = 8; /* fixup index */ | |
181 | ||
182 | task->data_phase = ide_data_phases[index / 2 + write]; | |
183 | } | |
184 | ||
1da177e4 LT |
185 | /* |
186 | * __ide_do_rw_disk() issues READ and WRITE commands to a disk, | |
187 | * using LBA if supported, or CHS otherwise, to address sectors. | |
188 | */ | |
98416549 BZ |
189 | static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq, |
190 | sector_t block) | |
1da177e4 LT |
191 | { |
192 | ide_hwif_t *hwif = HWIF(drive); | |
193 | unsigned int dma = drive->using_dma; | |
790d1239 | 194 | u16 nsectors = (u16)rq->nr_sectors; |
1da177e4 | 195 | u8 lba48 = (drive->addressing == 1) ? 1 : 0; |
9e42237f BZ |
196 | ide_task_t task; |
197 | struct ide_taskfile *tf = &task.tf; | |
f6e29e35 | 198 | ide_startstop_t rc; |
1da177e4 | 199 | |
238e4f14 | 200 | if ((hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && lba48 && dma) { |
1da177e4 LT |
201 | if (block + rq->nr_sectors > 1ULL << 28) |
202 | dma = 0; | |
203 | else | |
204 | lba48 = 0; | |
205 | } | |
206 | ||
207 | if (!dma) { | |
208 | ide_init_sg_cmd(drive, rq); | |
209 | ide_map_sg(drive, rq); | |
210 | } | |
211 | ||
9e42237f | 212 | memset(&task, 0, sizeof(task)); |
9a410e79 | 213 | task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
2bd06b23 | 214 | |
1da177e4 LT |
215 | if (drive->select.b.lba) { |
216 | if (lba48) { | |
c2f8311d MR |
217 | pr_debug("%s: LBA=0x%012llx\n", drive->name, |
218 | (unsigned long long)block); | |
1da177e4 | 219 | |
790d1239 | 220 | tf->hob_nsect = (nsectors >> 8) & 0xff; |
2bd06b23 BZ |
221 | tf->hob_lbal = (u8)(block >> 24); |
222 | if (sizeof(block) != 4) { | |
223 | tf->hob_lbam = (u8)((u64)block >> 32); | |
224 | tf->hob_lbah = (u8)((u64)block >> 40); | |
1da177e4 | 225 | } |
2bd06b23 | 226 | |
790d1239 | 227 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
228 | tf->lbal = (u8) block; |
229 | tf->lbam = (u8)(block >> 8); | |
230 | tf->lbah = (u8)(block >> 16); | |
6dd9b837 | 231 | |
657cc1a8 | 232 | task.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB); |
1da177e4 | 233 | } else { |
790d1239 | 234 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
235 | tf->lbal = block; |
236 | tf->lbam = block >>= 8; | |
237 | tf->lbah = block >>= 8; | |
238 | tf->device = (block >> 8) & 0xf; | |
1da177e4 LT |
239 | } |
240 | } else { | |
98416549 BZ |
241 | unsigned int sect, head, cyl, track; |
242 | ||
1da177e4 LT |
243 | track = (int)block / drive->sect; |
244 | sect = (int)block % drive->sect + 1; | |
1da177e4 LT |
245 | head = track % drive->head; |
246 | cyl = track / drive->head; | |
247 | ||
248 | pr_debug("%s: CHS=%u/%u/%u\n", drive->name, cyl, head, sect); | |
249 | ||
790d1239 | 250 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
251 | tf->lbal = sect; |
252 | tf->lbam = cyl; | |
253 | tf->lbah = cyl >> 8; | |
254 | tf->device = head; | |
1da177e4 LT |
255 | } |
256 | ||
ba76ae38 BZ |
257 | if (rq_data_dir(rq)) |
258 | task.tf_flags |= IDE_TFLAG_WRITE; | |
259 | ||
260 | ide_tf_set_cmd(drive, &task, dma); | |
f6e29e35 BZ |
261 | if (!dma) |
262 | hwif->data_phase = task.data_phase; | |
263 | task.rq = rq; | |
ba76ae38 | 264 | |
f6e29e35 | 265 | rc = do_rw_taskfile(drive, &task); |
2bd06b23 | 266 | |
f6e29e35 | 267 | if (rc == ide_stopped && dma) { |
1da177e4 | 268 | /* fallback to PIO */ |
f6e29e35 | 269 | task.tf_flags |= IDE_TFLAG_DMA_PIO_FALLBACK; |
ba76ae38 | 270 | ide_tf_set_cmd(drive, &task, 0); |
f6e29e35 | 271 | hwif->data_phase = task.data_phase; |
1da177e4 | 272 | ide_init_sg_cmd(drive, rq); |
f6e29e35 | 273 | rc = do_rw_taskfile(drive, &task); |
1da177e4 LT |
274 | } |
275 | ||
f6e29e35 | 276 | return rc; |
1da177e4 LT |
277 | } |
278 | ||
279 | /* | |
280 | * 268435455 == 137439 MB or 28bit limit | |
281 | * 320173056 == 163929 MB or 48bit addressing | |
282 | * 1073741822 == 549756 MB or 48bit addressing fake drive | |
283 | */ | |
284 | ||
98416549 BZ |
285 | static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq, |
286 | sector_t block) | |
1da177e4 LT |
287 | { |
288 | ide_hwif_t *hwif = HWIF(drive); | |
289 | ||
290 | BUG_ON(drive->blocked); | |
291 | ||
292 | if (!blk_fs_request(rq)) { | |
293 | blk_dump_rq_flags(rq, "ide_do_rw_disk - bad command"); | |
294 | ide_end_request(drive, 0, 0); | |
295 | return ide_stopped; | |
296 | } | |
297 | ||
2bfb646c RP |
298 | ledtrig_ide_activity(); |
299 | ||
1da177e4 LT |
300 | pr_debug("%s: %sing: block=%llu, sectors=%lu, buffer=0x%08lx\n", |
301 | drive->name, rq_data_dir(rq) == READ ? "read" : "writ", | |
c2f8311d MR |
302 | (unsigned long long)block, rq->nr_sectors, |
303 | (unsigned long)rq->buffer); | |
1da177e4 LT |
304 | |
305 | if (hwif->rw_disk) | |
306 | hwif->rw_disk(drive, rq); | |
307 | ||
308 | return __ide_do_rw_disk(drive, rq, block); | |
309 | } | |
310 | ||
311 | /* | |
312 | * Queries for true maximum capacity of the drive. | |
313 | * Returns maximum LBA address (> 0) of the drive, 0 if failed. | |
314 | */ | |
7a3b7512 | 315 | static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48) |
1da177e4 LT |
316 | { |
317 | ide_task_t args; | |
650d841d | 318 | struct ide_taskfile *tf = &args.tf; |
7a3b7512 | 319 | u64 addr = 0; |
1da177e4 LT |
320 | |
321 | /* Create IDE/ATA command request structure */ | |
322 | memset(&args, 0, sizeof(ide_task_t)); | |
7a3b7512 | 323 | if (lba48) |
aaaade3f | 324 | tf->command = ATA_CMD_READ_NATIVE_MAX_EXT; |
7a3b7512 | 325 | else |
aaaade3f | 326 | tf->command = ATA_CMD_READ_NATIVE_MAX; |
650d841d | 327 | tf->device = ATA_LBA; |
657cc1a8 | 328 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
a3bbb9d8 | 329 | if (lba48) |
657cc1a8 | 330 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB); |
1da177e4 | 331 | /* submit command request */ |
9a3c49be | 332 | ide_no_data_taskfile(drive, &args); |
1da177e4 | 333 | |
1da177e4 | 334 | /* if OK, compute maximum address value */ |
a501633c BZ |
335 | if ((tf->status & 0x01) == 0) |
336 | addr = ide_get_lba_addr(tf, lba48) + 1; | |
650d841d | 337 | |
1da177e4 LT |
338 | return addr; |
339 | } | |
340 | ||
341 | /* | |
342 | * Sets maximum virtual LBA address of the drive. | |
343 | * Returns new maximum virtual LBA address (> 0) or 0 on failure. | |
344 | */ | |
7a3b7512 | 345 | static u64 idedisk_set_max_address(ide_drive_t *drive, u64 addr_req, int lba48) |
1da177e4 LT |
346 | { |
347 | ide_task_t args; | |
650d841d | 348 | struct ide_taskfile *tf = &args.tf; |
7a3b7512 | 349 | u64 addr_set = 0; |
1da177e4 LT |
350 | |
351 | addr_req--; | |
352 | /* Create IDE/ATA command request structure */ | |
353 | memset(&args, 0, sizeof(ide_task_t)); | |
650d841d BZ |
354 | tf->lbal = (addr_req >> 0) & 0xff; |
355 | tf->lbam = (addr_req >>= 8) & 0xff; | |
356 | tf->lbah = (addr_req >>= 8) & 0xff; | |
7a3b7512 BZ |
357 | if (lba48) { |
358 | tf->hob_lbal = (addr_req >>= 8) & 0xff; | |
359 | tf->hob_lbam = (addr_req >>= 8) & 0xff; | |
360 | tf->hob_lbah = (addr_req >>= 8) & 0xff; | |
aaaade3f | 361 | tf->command = ATA_CMD_SET_MAX_EXT; |
7a3b7512 BZ |
362 | } else { |
363 | tf->device = (addr_req >>= 8) & 0x0f; | |
aaaade3f | 364 | tf->command = ATA_CMD_SET_MAX; |
7a3b7512 BZ |
365 | } |
366 | tf->device |= ATA_LBA; | |
657cc1a8 | 367 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
a3bbb9d8 | 368 | if (lba48) |
657cc1a8 | 369 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB); |
1da177e4 | 370 | /* submit command request */ |
9a3c49be | 371 | ide_no_data_taskfile(drive, &args); |
1da177e4 | 372 | /* if OK, compute maximum address value */ |
a501633c BZ |
373 | if ((tf->status & 0x01) == 0) |
374 | addr_set = ide_get_lba_addr(tf, lba48) + 1; | |
650d841d | 375 | |
1da177e4 LT |
376 | return addr_set; |
377 | } | |
378 | ||
379 | static unsigned long long sectors_to_MB(unsigned long long n) | |
380 | { | |
381 | n <<= 9; /* make it bytes */ | |
382 | do_div(n, 1000000); /* make it MB */ | |
383 | return n; | |
384 | } | |
385 | ||
1da177e4 LT |
386 | /* |
387 | * The same here. | |
388 | */ | |
4dde4492 | 389 | static inline int idedisk_supports_lba48(const u16 *id) |
1da177e4 | 390 | { |
4dde4492 BZ |
391 | return (id[ATA_ID_COMMAND_SET_2] & 0x0400) && |
392 | (id[ATA_ID_CFS_ENABLE_2] & 0x0400) && | |
48fb2688 | 393 | ata_id_u64(id, ATA_ID_LBA_CAPACITY_2); |
1da177e4 LT |
394 | } |
395 | ||
b0244a00 BZ |
396 | /* |
397 | * Some disks report total number of sectors instead of | |
398 | * maximum sector address. We list them here. | |
399 | */ | |
400 | static const struct drive_list_entry hpa_list[] = { | |
401 | { "ST340823A", NULL }, | |
7062cdc5 | 402 | { "ST320413A", NULL }, |
b152fcd3 | 403 | { "ST310211A", NULL }, |
b0244a00 BZ |
404 | { NULL, NULL } |
405 | }; | |
406 | ||
858119e1 | 407 | static void idedisk_check_hpa(ide_drive_t *drive) |
1da177e4 LT |
408 | { |
409 | unsigned long long capacity, set_max; | |
410 | int lba48 = idedisk_supports_lba48(drive->id); | |
411 | ||
412 | capacity = drive->capacity64; | |
7a3b7512 BZ |
413 | |
414 | set_max = idedisk_read_native_max_address(drive, lba48); | |
1da177e4 | 415 | |
b0244a00 BZ |
416 | if (ide_in_drive_list(drive->id, hpa_list)) { |
417 | /* | |
418 | * Since we are inclusive wrt to firmware revisions do this | |
419 | * extra check and apply the workaround only when needed. | |
420 | */ | |
421 | if (set_max == capacity + 1) | |
422 | set_max--; | |
423 | } | |
424 | ||
1da177e4 LT |
425 | if (set_max <= capacity) |
426 | return; | |
427 | ||
428 | printk(KERN_INFO "%s: Host Protected Area detected.\n" | |
429 | "\tcurrent capacity is %llu sectors (%llu MB)\n" | |
430 | "\tnative capacity is %llu sectors (%llu MB)\n", | |
431 | drive->name, | |
432 | capacity, sectors_to_MB(capacity), | |
433 | set_max, sectors_to_MB(set_max)); | |
434 | ||
7a3b7512 BZ |
435 | set_max = idedisk_set_max_address(drive, set_max, lba48); |
436 | ||
1da177e4 LT |
437 | if (set_max) { |
438 | drive->capacity64 = set_max; | |
439 | printk(KERN_INFO "%s: Host Protected Area disabled.\n", | |
440 | drive->name); | |
441 | } | |
442 | } | |
443 | ||
98416549 | 444 | static void init_idedisk_capacity(ide_drive_t *drive) |
1da177e4 | 445 | { |
4dde4492 | 446 | u16 *id = drive->id; |
1da177e4 LT |
447 | /* |
448 | * If this drive supports the Host Protected Area feature set, | |
449 | * then we may need to change our opinion about the drive's capacity. | |
450 | */ | |
f41891c1 | 451 | int hpa = ata_id_hpa_enabled(id); |
1da177e4 LT |
452 | |
453 | if (idedisk_supports_lba48(id)) { | |
454 | /* drive speaks 48-bit LBA */ | |
455 | drive->select.b.lba = 1; | |
48fb2688 | 456 | drive->capacity64 = ata_id_u64(id, ATA_ID_LBA_CAPACITY_2); |
1da177e4 LT |
457 | if (hpa) |
458 | idedisk_check_hpa(drive); | |
48fb2688 | 459 | } else if (ata_id_has_lba(id) && lba_capacity_is_ok(id)) { |
1da177e4 LT |
460 | /* drive speaks 28-bit LBA */ |
461 | drive->select.b.lba = 1; | |
48fb2688 | 462 | drive->capacity64 = ata_id_u32(id, ATA_ID_LBA_CAPACITY); |
1da177e4 LT |
463 | if (hpa) |
464 | idedisk_check_hpa(drive); | |
465 | } else { | |
466 | /* drive speaks boring old 28-bit CHS */ | |
467 | drive->capacity64 = drive->cyl * drive->head * drive->sect; | |
468 | } | |
469 | } | |
470 | ||
98416549 | 471 | static sector_t idedisk_capacity(ide_drive_t *drive) |
1da177e4 | 472 | { |
3c619ffd | 473 | return drive->capacity64; |
1da177e4 LT |
474 | } |
475 | ||
ecfd80e4 | 476 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
477 | static int smart_enable(ide_drive_t *drive) |
478 | { | |
479 | ide_task_t args; | |
650d841d | 480 | struct ide_taskfile *tf = &args.tf; |
1da177e4 LT |
481 | |
482 | memset(&args, 0, sizeof(ide_task_t)); | |
aaaade3f BZ |
483 | tf->feature = ATA_SMART_ENABLE; |
484 | tf->lbam = ATA_SMART_LBAM_PASS; | |
485 | tf->lbah = ATA_SMART_LBAH_PASS; | |
486 | tf->command = ATA_CMD_SMART; | |
657cc1a8 | 487 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
9a3c49be | 488 | return ide_no_data_taskfile(drive, &args); |
1da177e4 LT |
489 | } |
490 | ||
43e7c0c4 | 491 | static int get_smart_data(ide_drive_t *drive, u8 *buf, u8 sub_cmd) |
1da177e4 LT |
492 | { |
493 | ide_task_t args; | |
650d841d | 494 | struct ide_taskfile *tf = &args.tf; |
1da177e4 LT |
495 | |
496 | memset(&args, 0, sizeof(ide_task_t)); | |
650d841d BZ |
497 | tf->feature = sub_cmd; |
498 | tf->nsect = 0x01; | |
aaaade3f BZ |
499 | tf->lbam = ATA_SMART_LBAM_PASS; |
500 | tf->lbah = ATA_SMART_LBAH_PASS; | |
501 | tf->command = ATA_CMD_SMART; | |
657cc1a8 | 502 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
ac026ff2 | 503 | args.data_phase = TASKFILE_IN; |
1da177e4 | 504 | (void) smart_enable(drive); |
ac026ff2 | 505 | return ide_raw_taskfile(drive, &args, buf, 1); |
1da177e4 LT |
506 | } |
507 | ||
508 | static int proc_idedisk_read_cache | |
509 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
510 | { | |
511 | ide_drive_t *drive = (ide_drive_t *) data; | |
512 | char *out = page; | |
513 | int len; | |
514 | ||
515 | if (drive->id_read) | |
4dde4492 | 516 | len = sprintf(out, "%i\n", drive->id[ATA_ID_BUF_SIZE] / 2); |
1da177e4 | 517 | else |
98416549 BZ |
518 | len = sprintf(out, "(none)\n"); |
519 | ||
520 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1da177e4 LT |
521 | } |
522 | ||
523 | static int proc_idedisk_read_capacity | |
524 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
525 | { | |
526 | ide_drive_t*drive = (ide_drive_t *)data; | |
527 | int len; | |
528 | ||
98416549 BZ |
529 | len = sprintf(page, "%llu\n", (long long)idedisk_capacity(drive)); |
530 | ||
531 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1da177e4 LT |
532 | } |
533 | ||
799ee57a BZ |
534 | static int proc_idedisk_read_smart(char *page, char **start, off_t off, |
535 | int count, int *eof, void *data, u8 sub_cmd) | |
1da177e4 LT |
536 | { |
537 | ide_drive_t *drive = (ide_drive_t *)data; | |
538 | int len = 0, i = 0; | |
539 | ||
799ee57a | 540 | if (get_smart_data(drive, page, sub_cmd) == 0) { |
1da177e4 | 541 | unsigned short *val = (unsigned short *) page; |
151a6701 BZ |
542 | char *out = (char *)val + SECTOR_SIZE; |
543 | ||
1da177e4 LT |
544 | page = out; |
545 | do { | |
98416549 BZ |
546 | out += sprintf(out, "%04x%c", le16_to_cpu(*val), |
547 | (++i & 7) ? ' ' : '\n'); | |
1da177e4 | 548 | val += 1; |
151a6701 | 549 | } while (i < SECTOR_SIZE / 2); |
1da177e4 LT |
550 | len = out - page; |
551 | } | |
98416549 BZ |
552 | |
553 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1da177e4 LT |
554 | } |
555 | ||
799ee57a | 556 | static int proc_idedisk_read_sv |
1da177e4 LT |
557 | (char *page, char **start, off_t off, int count, int *eof, void *data) |
558 | { | |
799ee57a | 559 | return proc_idedisk_read_smart(page, start, off, count, eof, data, |
aaaade3f | 560 | ATA_SMART_READ_VALUES); |
799ee57a | 561 | } |
1da177e4 | 562 | |
799ee57a BZ |
563 | static int proc_idedisk_read_st |
564 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
565 | { | |
566 | return proc_idedisk_read_smart(page, start, off, count, eof, data, | |
aaaade3f | 567 | ATA_SMART_READ_THRESHOLDS); |
1da177e4 LT |
568 | } |
569 | ||
570 | static ide_proc_entry_t idedisk_proc[] = { | |
799ee57a BZ |
571 | { "cache", S_IFREG|S_IRUGO, proc_idedisk_read_cache, NULL }, |
572 | { "capacity", S_IFREG|S_IRUGO, proc_idedisk_read_capacity, NULL }, | |
573 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, | |
574 | { "smart_values", S_IFREG|S_IRUSR, proc_idedisk_read_sv, NULL }, | |
575 | { "smart_thresholds", S_IFREG|S_IRUSR, proc_idedisk_read_st, NULL }, | |
1da177e4 LT |
576 | { NULL, 0, NULL, NULL } |
577 | }; | |
ecfd80e4 | 578 | #endif /* CONFIG_IDE_PROC_FS */ |
1da177e4 | 579 | |
165125e1 | 580 | static void idedisk_prepare_flush(struct request_queue *q, struct request *rq) |
1da177e4 LT |
581 | { |
582 | ide_drive_t *drive = q->queuedata; | |
395d8ef5 | 583 | ide_task_t *task = kmalloc(sizeof(*task), GFP_ATOMIC); |
1da177e4 | 584 | |
395d8ef5 BZ |
585 | /* FIXME: map struct ide_taskfile on rq->cmd[] */ |
586 | BUG_ON(task == NULL); | |
587 | ||
588 | memset(task, 0, sizeof(*task)); | |
1da177e4 LT |
589 | if (ide_id_has_flush_cache_ext(drive->id) && |
590 | (drive->capacity64 >= (1UL << 28))) | |
aaaade3f | 591 | task->tf.command = ATA_CMD_FLUSH_EXT; |
1da177e4 | 592 | else |
aaaade3f | 593 | task->tf.command = ATA_CMD_FLUSH; |
395d8ef5 BZ |
594 | task->tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE | |
595 | IDE_TFLAG_DYN; | |
596 | task->data_phase = TASKFILE_NO_DATA; | |
1da177e4 | 597 | |
813a0eb2 | 598 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; |
4aff5e23 | 599 | rq->cmd_flags |= REQ_SOFTBARRIER; |
395d8ef5 | 600 | rq->special = task; |
1da177e4 LT |
601 | } |
602 | ||
8185d5aa BZ |
603 | ide_devset_get(multcount, mult_count); |
604 | ||
1da177e4 LT |
605 | /* |
606 | * This is tightly woven into the driver->do_special can not touch. | |
607 | * DON'T do it again until a total personality rewrite is committed. | |
608 | */ | |
609 | static int set_multcount(ide_drive_t *drive, int arg) | |
610 | { | |
dd47087b FT |
611 | struct request *rq; |
612 | int error; | |
1da177e4 | 613 | |
48fb2688 | 614 | if (arg < 0 || arg > (drive->id[ATA_ID_MAX_MULTSECT] & 0xff)) |
1497943e BZ |
615 | return -EINVAL; |
616 | ||
1da177e4 LT |
617 | if (drive->special.b.set_multmode) |
618 | return -EBUSY; | |
852738f3 | 619 | |
dd47087b FT |
620 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
621 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
852738f3 | 622 | |
1da177e4 LT |
623 | drive->mult_req = arg; |
624 | drive->special.b.set_multmode = 1; | |
dd47087b FT |
625 | error = blk_execute_rq(drive->queue, NULL, rq, 0); |
626 | blk_put_request(rq); | |
98416549 | 627 | |
1da177e4 LT |
628 | return (drive->mult_count == arg) ? 0 : -EIO; |
629 | } | |
630 | ||
8185d5aa BZ |
631 | ide_devset_get(nowerr, nowerr); |
632 | ||
1da177e4 LT |
633 | static int set_nowerr(ide_drive_t *drive, int arg) |
634 | { | |
1497943e BZ |
635 | if (arg < 0 || arg > 1) |
636 | return -EINVAL; | |
637 | ||
1da177e4 LT |
638 | if (ide_spin_wait_hwgroup(drive)) |
639 | return -EBUSY; | |
640 | drive->nowerr = arg; | |
641 | drive->bad_wstat = arg ? BAD_R_STAT : BAD_W_STAT; | |
642 | spin_unlock_irq(&ide_lock); | |
643 | return 0; | |
644 | } | |
645 | ||
3e087b57 TH |
646 | static void update_ordered(ide_drive_t *drive) |
647 | { | |
4dde4492 | 648 | u16 *id = drive->id; |
3e087b57 TH |
649 | unsigned ordered = QUEUE_ORDERED_NONE; |
650 | prepare_flush_fn *prep_fn = NULL; | |
3e087b57 TH |
651 | |
652 | if (drive->wcache) { | |
653 | unsigned long long capacity; | |
654 | int barrier; | |
655 | /* | |
656 | * We must avoid issuing commands a drive does not | |
657 | * understand or we may crash it. We check flush cache | |
658 | * is supported. We also check we have the LBA48 flush | |
659 | * cache if the drive capacity is too large. By this | |
660 | * time we have trimmed the drive capacity if LBA48 is | |
661 | * not available so we don't need to recheck that. | |
662 | */ | |
663 | capacity = idedisk_capacity(drive); | |
36193484 | 664 | barrier = ide_id_has_flush_cache(id) && !drive->noflush && |
3e087b57 TH |
665 | (drive->addressing == 0 || capacity <= (1ULL << 28) || |
666 | ide_id_has_flush_cache_ext(id)); | |
667 | ||
668 | printk(KERN_INFO "%s: cache flushes %ssupported\n", | |
f7ad836c | 669 | drive->name, barrier ? "" : "not "); |
3e087b57 TH |
670 | |
671 | if (barrier) { | |
672 | ordered = QUEUE_ORDERED_DRAIN_FLUSH; | |
673 | prep_fn = idedisk_prepare_flush; | |
3e087b57 TH |
674 | } |
675 | } else | |
676 | ordered = QUEUE_ORDERED_DRAIN; | |
677 | ||
678 | blk_queue_ordered(drive->queue, ordered, prep_fn); | |
3e087b57 TH |
679 | } |
680 | ||
8185d5aa BZ |
681 | ide_devset_get(wcache, wcache); |
682 | ||
683 | static int set_wcache(ide_drive_t *drive, int arg) | |
1da177e4 LT |
684 | { |
685 | ide_task_t args; | |
3e087b57 | 686 | int err = 1; |
1da177e4 | 687 | |
1497943e BZ |
688 | if (arg < 0 || arg > 1) |
689 | return -EINVAL; | |
690 | ||
3e087b57 TH |
691 | if (ide_id_has_flush_cache(drive->id)) { |
692 | memset(&args, 0, sizeof(ide_task_t)); | |
650d841d | 693 | args.tf.feature = arg ? |
aaaade3f BZ |
694 | SETFEATURES_WC_ON : SETFEATURES_WC_OFF; |
695 | args.tf.command = ATA_CMD_SET_FEATURES; | |
657cc1a8 | 696 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
9a3c49be | 697 | err = ide_no_data_taskfile(drive, &args); |
3e087b57 TH |
698 | if (err == 0) |
699 | drive->wcache = arg; | |
700 | } | |
1da177e4 | 701 | |
3e087b57 | 702 | update_ordered(drive); |
1da177e4 | 703 | |
3e087b57 | 704 | return err; |
1da177e4 LT |
705 | } |
706 | ||
98416549 | 707 | static int do_idedisk_flushcache(ide_drive_t *drive) |
1da177e4 LT |
708 | { |
709 | ide_task_t args; | |
710 | ||
711 | memset(&args, 0, sizeof(ide_task_t)); | |
712 | if (ide_id_has_flush_cache_ext(drive->id)) | |
aaaade3f | 713 | args.tf.command = ATA_CMD_FLUSH_EXT; |
1da177e4 | 714 | else |
aaaade3f | 715 | args.tf.command = ATA_CMD_FLUSH; |
657cc1a8 | 716 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
9a3c49be | 717 | return ide_no_data_taskfile(drive, &args); |
1da177e4 LT |
718 | } |
719 | ||
8185d5aa BZ |
720 | ide_devset_get(acoustic, acoustic); |
721 | ||
98416549 | 722 | static int set_acoustic(ide_drive_t *drive, int arg) |
1da177e4 LT |
723 | { |
724 | ide_task_t args; | |
725 | ||
1497943e BZ |
726 | if (arg < 0 || arg > 254) |
727 | return -EINVAL; | |
728 | ||
1da177e4 | 729 | memset(&args, 0, sizeof(ide_task_t)); |
aaaade3f | 730 | args.tf.feature = arg ? SETFEATURES_AAM_ON : SETFEATURES_AAM_OFF; |
650d841d | 731 | args.tf.nsect = arg; |
aaaade3f | 732 | args.tf.command = ATA_CMD_SET_FEATURES; |
657cc1a8 | 733 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
9a3c49be | 734 | ide_no_data_taskfile(drive, &args); |
1da177e4 LT |
735 | drive->acoustic = arg; |
736 | return 0; | |
737 | } | |
738 | ||
8185d5aa BZ |
739 | ide_devset_get(lba_addressing, addressing); |
740 | ||
1da177e4 LT |
741 | /* |
742 | * drive->addressing: | |
743 | * 0: 28-bit | |
744 | * 1: 48-bit | |
745 | * 2: 48-bit capable doing 28-bit | |
746 | */ | |
747 | static int set_lba_addressing(ide_drive_t *drive, int arg) | |
748 | { | |
1497943e BZ |
749 | if (arg < 0 || arg > 2) |
750 | return -EINVAL; | |
751 | ||
1da177e4 LT |
752 | drive->addressing = 0; |
753 | ||
238e4f14 | 754 | if (drive->hwif->host_flags & IDE_HFLAG_NO_LBA48) |
1da177e4 LT |
755 | return 0; |
756 | ||
757 | if (!idedisk_supports_lba48(drive->id)) | |
98416549 | 758 | return -EIO; |
1da177e4 LT |
759 | drive->addressing = arg; |
760 | return 0; | |
761 | } | |
762 | ||
7662d046 | 763 | #ifdef CONFIG_IDE_PROC_FS |
8185d5aa BZ |
764 | ide_devset_rw_nolock(acoustic, 0, 254, acoustic); |
765 | ide_devset_rw_nolock(address, 0, 2, lba_addressing); | |
766 | ide_devset_rw_nolock(multcount, 0, 16, multcount); | |
767 | ide_devset_rw_nolock(nowerr, 0, 1, nowerr); | |
768 | ide_devset_rw_nolock(wcache, 0, 1, wcache); | |
769 | ||
770 | ide_devset_rw(bios_cyl, 0, 65535, bios_cyl); | |
771 | ide_devset_rw(bios_head, 0, 255, bios_head); | |
772 | ide_devset_rw(bios_sect, 0, 63, bios_sect); | |
773 | ide_devset_rw(failures, 0, 65535, failures); | |
774 | ide_devset_rw(lun, 0, 7, lun); | |
775 | ide_devset_rw(max_failures, 0, 65535, max_failures); | |
776 | ||
777 | static const struct ide_devset *idedisk_settings[] = { | |
778 | &ide_devset_acoustic, | |
779 | &ide_devset_address, | |
780 | &ide_devset_bios_cyl, | |
781 | &ide_devset_bios_head, | |
782 | &ide_devset_bios_sect, | |
783 | &ide_devset_failures, | |
784 | &ide_devset_lun, | |
785 | &ide_devset_max_failures, | |
786 | &ide_devset_multcount, | |
787 | &ide_devset_nowerr, | |
788 | &ide_devset_wcache, | |
789 | NULL | |
790 | }; | |
7662d046 | 791 | #endif |
1da177e4 | 792 | |
98416549 | 793 | static void idedisk_setup(ide_drive_t *drive) |
1da177e4 | 794 | { |
1e874f44 | 795 | struct ide_disk_obj *idkp = drive->driver_data; |
238e4f14 | 796 | ide_hwif_t *hwif = drive->hwif; |
4dde4492 BZ |
797 | u16 *id = drive->id; |
798 | char *m = (char *)&id[ATA_ID_PROD]; | |
1da177e4 | 799 | unsigned long long capacity; |
1da177e4 | 800 | |
1e874f44 | 801 | ide_proc_register_driver(drive, idkp->driver); |
1da177e4 LT |
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 | */ |
4dde4492 | 810 | if (m[0] != 'W' || m[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 */ | |
4dde4492 BZ |
883 | if (id[ATA_ID_BUF_SIZE]) |
884 | printk(KERN_CONT " w/%dKiB Cache", id[ATA_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 | 889 | /* write cache enabled? */ |
8a089c66 | 890 | if ((id[ATA_ID_CSFO] & 1) || ata_id_wcache_enabled(id)) |
1da177e4 LT |
891 | drive->wcache = 1; |
892 | ||
8185d5aa | 893 | set_wcache(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 | { | |
f41891c1 | 940 | if (ata_id_hpa_enabled(drive->id)) |
0d2157f7 LT |
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 LT |
983 | .do_request = ide_do_rw_disk, |
984 | .end_request = ide_end_request, | |
985 | .error = __ide_error, | |
7662d046 | 986 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 987 | .proc = idedisk_proc, |
8185d5aa | 988 | .settings = idedisk_settings, |
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)); | |
aaaade3f | 997 | task.tf.command = on ? ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK; |
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 | 1068 | ide_drive_t *drive = idkp->drive; |
8185d5aa | 1069 | int err, (*getfunc)(ide_drive_t *), (*setfunc)(ide_drive_t *, int); |
1497943e BZ |
1070 | |
1071 | switch (cmd) { | |
8185d5aa BZ |
1072 | case HDIO_GET_ADDRESS: getfunc = get_lba_addressing; goto read_val; |
1073 | case HDIO_GET_MULTCOUNT: getfunc = get_multcount; goto read_val; | |
1074 | case HDIO_GET_NOWERR: getfunc = get_nowerr; goto read_val; | |
1075 | case HDIO_GET_WCACHE: getfunc = get_wcache; goto read_val; | |
1076 | case HDIO_GET_ACOUSTIC: getfunc = get_acoustic; goto read_val; | |
1497943e BZ |
1077 | case HDIO_SET_ADDRESS: setfunc = set_lba_addressing; goto set_val; |
1078 | case HDIO_SET_MULTCOUNT: setfunc = set_multcount; goto set_val; | |
1079 | case HDIO_SET_NOWERR: setfunc = set_nowerr; goto set_val; | |
8185d5aa | 1080 | case HDIO_SET_WCACHE: setfunc = set_wcache; goto set_val; |
1497943e BZ |
1081 | case HDIO_SET_ACOUSTIC: setfunc = set_acoustic; goto set_val; |
1082 | } | |
1083 | ||
1084 | return generic_ide_ioctl(drive, file, bdev, cmd, arg); | |
1085 | ||
1086 | read_val: | |
f9383c42 | 1087 | mutex_lock(&ide_setting_mtx); |
1497943e | 1088 | spin_lock_irqsave(&ide_lock, flags); |
8185d5aa | 1089 | err = getfunc(drive); |
1497943e | 1090 | spin_unlock_irqrestore(&ide_lock, flags); |
f9383c42 | 1091 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
1092 | return err >= 0 ? put_user(err, (long __user *)arg) : err; |
1093 | ||
1094 | set_val: | |
1095 | if (bdev != bdev->bd_contains) | |
1096 | err = -EINVAL; | |
1097 | else { | |
1098 | if (!capable(CAP_SYS_ADMIN)) | |
1099 | err = -EACCES; | |
1100 | else { | |
f9383c42 | 1101 | mutex_lock(&ide_setting_mtx); |
1497943e | 1102 | err = setfunc(drive, arg); |
f9383c42 | 1103 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
1104 | } |
1105 | } | |
1106 | return err; | |
1da177e4 LT |
1107 | } |
1108 | ||
1109 | static int idedisk_media_changed(struct gendisk *disk) | |
1110 | { | |
1111 | struct ide_disk_obj *idkp = ide_disk_g(disk); | |
1112 | ide_drive_t *drive = idkp->drive; | |
1113 | ||
1114 | /* do not scan partitions twice if this is a removable device */ | |
1115 | if (drive->attach) { | |
1116 | drive->attach = 0; | |
1117 | return 0; | |
1118 | } | |
1119 | /* if removable, always assume it was changed */ | |
1120 | return drive->removable; | |
1121 | } | |
1122 | ||
1123 | static int idedisk_revalidate_disk(struct gendisk *disk) | |
1124 | { | |
1125 | struct ide_disk_obj *idkp = ide_disk_g(disk); | |
1126 | set_capacity(disk, idedisk_capacity(idkp->drive)); | |
1127 | return 0; | |
1128 | } | |
1129 | ||
1130 | static struct block_device_operations idedisk_ops = { | |
98416549 BZ |
1131 | .owner = THIS_MODULE, |
1132 | .open = idedisk_open, | |
1133 | .release = idedisk_release, | |
1134 | .ioctl = idedisk_ioctl, | |
1135 | .getgeo = idedisk_getgeo, | |
1136 | .media_changed = idedisk_media_changed, | |
1137 | .revalidate_disk = idedisk_revalidate_disk | |
1da177e4 LT |
1138 | }; |
1139 | ||
1140 | MODULE_DESCRIPTION("ATA DISK Driver"); | |
1141 | ||
4031bbe4 | 1142 | static int ide_disk_probe(ide_drive_t *drive) |
1da177e4 LT |
1143 | { |
1144 | struct ide_disk_obj *idkp; | |
1145 | struct gendisk *g; | |
1146 | ||
1147 | /* strstr("foo", "") is non-NULL */ | |
1148 | if (!strstr("ide-disk", drive->driver_req)) | |
1149 | goto failed; | |
2a924662 | 1150 | |
1da177e4 LT |
1151 | if (drive->media != ide_disk) |
1152 | goto failed; | |
1153 | ||
f5e3c2fa | 1154 | idkp = kzalloc(sizeof(*idkp), GFP_KERNEL); |
1da177e4 LT |
1155 | if (!idkp) |
1156 | goto failed; | |
1157 | ||
689d6fac | 1158 | g = alloc_disk_node(IDE_DISK_MINORS, hwif_to_node(drive->hwif)); |
1da177e4 LT |
1159 | if (!g) |
1160 | goto out_free_idkp; | |
1161 | ||
1162 | ide_init_disk(g, drive); | |
1163 | ||
1da177e4 LT |
1164 | kref_init(&idkp->kref); |
1165 | ||
1166 | idkp->drive = drive; | |
1167 | idkp->driver = &idedisk_driver; | |
1168 | idkp->disk = g; | |
1169 | ||
1170 | g->private_data = &idkp->driver; | |
1171 | ||
1172 | drive->driver_data = idkp; | |
1173 | ||
1da177e4 LT |
1174 | idedisk_setup(drive); |
1175 | if ((!drive->head || drive->head > 16) && !drive->select.b.lba) { | |
1176 | printk(KERN_ERR "%s: INVALID GEOMETRY: %d PHYSICAL HEADS?\n", | |
1177 | drive->name, drive->head); | |
1178 | drive->attach = 0; | |
1179 | } else | |
1180 | drive->attach = 1; | |
8604affd | 1181 | |
f615b48c | 1182 | g->minors = IDE_DISK_MINORS; |
1da177e4 | 1183 | g->driverfs_dev = &drive->gendev; |
689d6fac TH |
1184 | g->flags |= GENHD_FL_EXT_DEVT; |
1185 | if (drive->removable) | |
1186 | g->flags |= GENHD_FL_REMOVABLE; | |
1da177e4 LT |
1187 | set_capacity(g, idedisk_capacity(drive)); |
1188 | g->fops = &idedisk_ops; | |
1189 | add_disk(g); | |
1190 | return 0; | |
1191 | ||
1da177e4 LT |
1192 | out_free_idkp: |
1193 | kfree(idkp); | |
1194 | failed: | |
8604affd | 1195 | return -ENODEV; |
1da177e4 LT |
1196 | } |
1197 | ||
98416549 | 1198 | static void __exit idedisk_exit(void) |
1da177e4 | 1199 | { |
8604affd | 1200 | driver_unregister(&idedisk_driver.gen_driver); |
1da177e4 LT |
1201 | } |
1202 | ||
17514e8a | 1203 | static int __init idedisk_init(void) |
1da177e4 | 1204 | { |
8604affd | 1205 | return driver_register(&idedisk_driver.gen_driver); |
1da177e4 LT |
1206 | } |
1207 | ||
263756ec | 1208 | MODULE_ALIAS("ide:*m-disk*"); |
1da177e4 LT |
1209 | module_init(idedisk_init); |
1210 | module_exit(idedisk_exit); | |
1211 | MODULE_LICENSE("GPL"); |