Commit | Line | Data |
---|---|---|
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> | |
ccd32e22 | 5 | * Copyright (C) 2003 Red Hat |
59bca8cc | 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 | ||
1da177e4 LT |
17 | #include <linux/types.h> |
18 | #include <linux/string.h> | |
19 | #include <linux/kernel.h> | |
20 | #include <linux/timer.h> | |
21 | #include <linux/mm.h> | |
22 | #include <linux/interrupt.h> | |
23 | #include <linux/major.h> | |
24 | #include <linux/errno.h> | |
25 | #include <linux/genhd.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/delay.h> | |
cf8b8975 | 28 | #include <linux/mutex.h> |
2bfb646c | 29 | #include <linux/leds.h> |
1da177e4 | 30 | #include <linux/ide.h> |
3ceca727 | 31 | #include <linux/hdreg.h> |
1da177e4 LT |
32 | |
33 | #include <asm/byteorder.h> | |
34 | #include <asm/irq.h> | |
35 | #include <asm/uaccess.h> | |
36 | #include <asm/io.h> | |
37 | #include <asm/div64.h> | |
38 | ||
f8790489 | 39 | #include "ide-disk.h" |
1da177e4 | 40 | |
ba76ae38 | 41 | static const u8 ide_rw_cmds[] = { |
aaaade3f BZ |
42 | ATA_CMD_READ_MULTI, |
43 | ATA_CMD_WRITE_MULTI, | |
44 | ATA_CMD_READ_MULTI_EXT, | |
45 | ATA_CMD_WRITE_MULTI_EXT, | |
46 | ATA_CMD_PIO_READ, | |
47 | ATA_CMD_PIO_WRITE, | |
48 | ATA_CMD_PIO_READ_EXT, | |
49 | ATA_CMD_PIO_WRITE_EXT, | |
50 | ATA_CMD_READ, | |
51 | ATA_CMD_WRITE, | |
52 | ATA_CMD_READ_EXT, | |
53 | ATA_CMD_WRITE_EXT, | |
ba76ae38 BZ |
54 | }; |
55 | ||
56 | static const u8 ide_data_phases[] = { | |
57 | TASKFILE_MULTI_IN, | |
58 | TASKFILE_MULTI_OUT, | |
59 | TASKFILE_IN, | |
60 | TASKFILE_OUT, | |
61 | TASKFILE_IN_DMA, | |
62 | TASKFILE_OUT_DMA, | |
63 | }; | |
64 | ||
65 | static void ide_tf_set_cmd(ide_drive_t *drive, ide_task_t *task, u8 dma) | |
66 | { | |
67 | u8 index, lba48, write; | |
68 | ||
69 | lba48 = (task->tf_flags & IDE_TFLAG_LBA48) ? 2 : 0; | |
70 | write = (task->tf_flags & IDE_TFLAG_WRITE) ? 1 : 0; | |
71 | ||
72 | if (dma) | |
ba4b2e60 | 73 | index = 8; |
ba76ae38 BZ |
74 | else |
75 | index = drive->mult_count ? 0 : 4; | |
76 | ||
77 | task->tf.command = ide_rw_cmds[index + lba48 + write]; | |
78 | ||
79 | if (dma) | |
80 | index = 8; /* fixup index */ | |
81 | ||
82 | task->data_phase = ide_data_phases[index / 2 + write]; | |
83 | } | |
84 | ||
1da177e4 LT |
85 | /* |
86 | * __ide_do_rw_disk() issues READ and WRITE commands to a disk, | |
87 | * using LBA if supported, or CHS otherwise, to address sectors. | |
88 | */ | |
98416549 BZ |
89 | static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq, |
90 | sector_t block) | |
1da177e4 | 91 | { |
898ec223 | 92 | ide_hwif_t *hwif = drive->hwif; |
790d1239 | 93 | u16 nsectors = (u16)rq->nr_sectors; |
97100fc8 BZ |
94 | u8 lba48 = !!(drive->dev_flags & IDE_DFLAG_LBA48); |
95 | u8 dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA); | |
9e42237f BZ |
96 | ide_task_t task; |
97 | struct ide_taskfile *tf = &task.tf; | |
f6e29e35 | 98 | ide_startstop_t rc; |
1da177e4 | 99 | |
238e4f14 | 100 | if ((hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && lba48 && dma) { |
1da177e4 LT |
101 | if (block + rq->nr_sectors > 1ULL << 28) |
102 | dma = 0; | |
103 | else | |
104 | lba48 = 0; | |
105 | } | |
106 | ||
107 | if (!dma) { | |
108 | ide_init_sg_cmd(drive, rq); | |
109 | ide_map_sg(drive, rq); | |
110 | } | |
111 | ||
9e42237f | 112 | memset(&task, 0, sizeof(task)); |
9a410e79 | 113 | task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
2bd06b23 | 114 | |
d1d76714 | 115 | if (drive->dev_flags & IDE_DFLAG_LBA) { |
1da177e4 | 116 | if (lba48) { |
c2f8311d MR |
117 | pr_debug("%s: LBA=0x%012llx\n", drive->name, |
118 | (unsigned long long)block); | |
1da177e4 | 119 | |
790d1239 | 120 | tf->hob_nsect = (nsectors >> 8) & 0xff; |
2bd06b23 BZ |
121 | tf->hob_lbal = (u8)(block >> 24); |
122 | if (sizeof(block) != 4) { | |
123 | tf->hob_lbam = (u8)((u64)block >> 32); | |
124 | tf->hob_lbah = (u8)((u64)block >> 40); | |
1da177e4 | 125 | } |
2bd06b23 | 126 | |
790d1239 | 127 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
128 | tf->lbal = (u8) block; |
129 | tf->lbam = (u8)(block >> 8); | |
130 | tf->lbah = (u8)(block >> 16); | |
6dd9b837 | 131 | |
657cc1a8 | 132 | task.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB); |
1da177e4 | 133 | } else { |
790d1239 | 134 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
135 | tf->lbal = block; |
136 | tf->lbam = block >>= 8; | |
137 | tf->lbah = block >>= 8; | |
138 | tf->device = (block >> 8) & 0xf; | |
1da177e4 | 139 | } |
d1d76714 BZ |
140 | |
141 | tf->device |= ATA_LBA; | |
1da177e4 | 142 | } else { |
98416549 BZ |
143 | unsigned int sect, head, cyl, track; |
144 | ||
1da177e4 LT |
145 | track = (int)block / drive->sect; |
146 | sect = (int)block % drive->sect + 1; | |
1da177e4 LT |
147 | head = track % drive->head; |
148 | cyl = track / drive->head; | |
149 | ||
150 | pr_debug("%s: CHS=%u/%u/%u\n", drive->name, cyl, head, sect); | |
151 | ||
790d1239 | 152 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
153 | tf->lbal = sect; |
154 | tf->lbam = cyl; | |
155 | tf->lbah = cyl >> 8; | |
156 | tf->device = head; | |
1da177e4 LT |
157 | } |
158 | ||
ba76ae38 BZ |
159 | if (rq_data_dir(rq)) |
160 | task.tf_flags |= IDE_TFLAG_WRITE; | |
161 | ||
162 | ide_tf_set_cmd(drive, &task, dma); | |
f6e29e35 | 163 | task.rq = rq; |
ba76ae38 | 164 | |
f6e29e35 | 165 | rc = do_rw_taskfile(drive, &task); |
2bd06b23 | 166 | |
f6e29e35 | 167 | if (rc == ide_stopped && dma) { |
1da177e4 | 168 | /* fallback to PIO */ |
f6e29e35 | 169 | task.tf_flags |= IDE_TFLAG_DMA_PIO_FALLBACK; |
ba76ae38 | 170 | ide_tf_set_cmd(drive, &task, 0); |
1da177e4 | 171 | ide_init_sg_cmd(drive, rq); |
f6e29e35 | 172 | rc = do_rw_taskfile(drive, &task); |
1da177e4 LT |
173 | } |
174 | ||
f6e29e35 | 175 | return rc; |
1da177e4 LT |
176 | } |
177 | ||
178 | /* | |
179 | * 268435455 == 137439 MB or 28bit limit | |
180 | * 320173056 == 163929 MB or 48bit addressing | |
181 | * 1073741822 == 549756 MB or 48bit addressing fake drive | |
182 | */ | |
183 | ||
806f80a6 BZ |
184 | static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq, |
185 | sector_t block) | |
1da177e4 | 186 | { |
898ec223 | 187 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 | 188 | |
97100fc8 | 189 | BUG_ON(drive->dev_flags & IDE_DFLAG_BLOCKED); |
1da177e4 LT |
190 | |
191 | if (!blk_fs_request(rq)) { | |
192 | blk_dump_rq_flags(rq, "ide_do_rw_disk - bad command"); | |
193 | ide_end_request(drive, 0, 0); | |
194 | return ide_stopped; | |
195 | } | |
196 | ||
2bfb646c RP |
197 | ledtrig_ide_activity(); |
198 | ||
1da177e4 LT |
199 | pr_debug("%s: %sing: block=%llu, sectors=%lu, buffer=0x%08lx\n", |
200 | drive->name, rq_data_dir(rq) == READ ? "read" : "writ", | |
c2f8311d MR |
201 | (unsigned long long)block, rq->nr_sectors, |
202 | (unsigned long)rq->buffer); | |
1da177e4 LT |
203 | |
204 | if (hwif->rw_disk) | |
205 | hwif->rw_disk(drive, rq); | |
206 | ||
207 | return __ide_do_rw_disk(drive, rq, block); | |
208 | } | |
209 | ||
210 | /* | |
211 | * Queries for true maximum capacity of the drive. | |
212 | * Returns maximum LBA address (> 0) of the drive, 0 if failed. | |
213 | */ | |
7a3b7512 | 214 | static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48) |
1da177e4 LT |
215 | { |
216 | ide_task_t args; | |
650d841d | 217 | struct ide_taskfile *tf = &args.tf; |
7a3b7512 | 218 | u64 addr = 0; |
1da177e4 LT |
219 | |
220 | /* Create IDE/ATA command request structure */ | |
221 | memset(&args, 0, sizeof(ide_task_t)); | |
7a3b7512 | 222 | if (lba48) |
aaaade3f | 223 | tf->command = ATA_CMD_READ_NATIVE_MAX_EXT; |
7a3b7512 | 224 | else |
aaaade3f | 225 | tf->command = ATA_CMD_READ_NATIVE_MAX; |
650d841d | 226 | tf->device = ATA_LBA; |
657cc1a8 | 227 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
a3bbb9d8 | 228 | if (lba48) |
657cc1a8 | 229 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB); |
1da177e4 | 230 | /* submit command request */ |
9a3c49be | 231 | ide_no_data_taskfile(drive, &args); |
1da177e4 | 232 | |
1da177e4 | 233 | /* if OK, compute maximum address value */ |
a501633c BZ |
234 | if ((tf->status & 0x01) == 0) |
235 | addr = ide_get_lba_addr(tf, lba48) + 1; | |
650d841d | 236 | |
1da177e4 LT |
237 | return addr; |
238 | } | |
239 | ||
240 | /* | |
241 | * Sets maximum virtual LBA address of the drive. | |
242 | * Returns new maximum virtual LBA address (> 0) or 0 on failure. | |
243 | */ | |
7a3b7512 | 244 | static u64 idedisk_set_max_address(ide_drive_t *drive, u64 addr_req, int lba48) |
1da177e4 LT |
245 | { |
246 | ide_task_t args; | |
650d841d | 247 | struct ide_taskfile *tf = &args.tf; |
7a3b7512 | 248 | u64 addr_set = 0; |
1da177e4 LT |
249 | |
250 | addr_req--; | |
251 | /* Create IDE/ATA command request structure */ | |
252 | memset(&args, 0, sizeof(ide_task_t)); | |
650d841d BZ |
253 | tf->lbal = (addr_req >> 0) & 0xff; |
254 | tf->lbam = (addr_req >>= 8) & 0xff; | |
255 | tf->lbah = (addr_req >>= 8) & 0xff; | |
7a3b7512 BZ |
256 | if (lba48) { |
257 | tf->hob_lbal = (addr_req >>= 8) & 0xff; | |
258 | tf->hob_lbam = (addr_req >>= 8) & 0xff; | |
259 | tf->hob_lbah = (addr_req >>= 8) & 0xff; | |
aaaade3f | 260 | tf->command = ATA_CMD_SET_MAX_EXT; |
7a3b7512 BZ |
261 | } else { |
262 | tf->device = (addr_req >>= 8) & 0x0f; | |
aaaade3f | 263 | tf->command = ATA_CMD_SET_MAX; |
7a3b7512 BZ |
264 | } |
265 | tf->device |= ATA_LBA; | |
657cc1a8 | 266 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
a3bbb9d8 | 267 | if (lba48) |
657cc1a8 | 268 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB); |
1da177e4 | 269 | /* submit command request */ |
9a3c49be | 270 | ide_no_data_taskfile(drive, &args); |
1da177e4 | 271 | /* if OK, compute maximum address value */ |
a501633c BZ |
272 | if ((tf->status & 0x01) == 0) |
273 | addr_set = ide_get_lba_addr(tf, lba48) + 1; | |
650d841d | 274 | |
1da177e4 LT |
275 | return addr_set; |
276 | } | |
277 | ||
278 | static unsigned long long sectors_to_MB(unsigned long long n) | |
279 | { | |
280 | n <<= 9; /* make it bytes */ | |
281 | do_div(n, 1000000); /* make it MB */ | |
282 | return n; | |
283 | } | |
284 | ||
b0244a00 BZ |
285 | /* |
286 | * Some disks report total number of sectors instead of | |
287 | * maximum sector address. We list them here. | |
288 | */ | |
289 | static const struct drive_list_entry hpa_list[] = { | |
290 | { "ST340823A", NULL }, | |
7062cdc5 | 291 | { "ST320413A", NULL }, |
b152fcd3 | 292 | { "ST310211A", NULL }, |
b0244a00 BZ |
293 | { NULL, NULL } |
294 | }; | |
295 | ||
858119e1 | 296 | static void idedisk_check_hpa(ide_drive_t *drive) |
1da177e4 LT |
297 | { |
298 | unsigned long long capacity, set_max; | |
942dcd85 | 299 | int lba48 = ata_id_lba48_enabled(drive->id); |
1da177e4 LT |
300 | |
301 | capacity = drive->capacity64; | |
7a3b7512 BZ |
302 | |
303 | set_max = idedisk_read_native_max_address(drive, lba48); | |
1da177e4 | 304 | |
b0244a00 BZ |
305 | if (ide_in_drive_list(drive->id, hpa_list)) { |
306 | /* | |
307 | * Since we are inclusive wrt to firmware revisions do this | |
308 | * extra check and apply the workaround only when needed. | |
309 | */ | |
310 | if (set_max == capacity + 1) | |
311 | set_max--; | |
312 | } | |
313 | ||
1da177e4 LT |
314 | if (set_max <= capacity) |
315 | return; | |
316 | ||
317 | printk(KERN_INFO "%s: Host Protected Area detected.\n" | |
318 | "\tcurrent capacity is %llu sectors (%llu MB)\n" | |
319 | "\tnative capacity is %llu sectors (%llu MB)\n", | |
320 | drive->name, | |
321 | capacity, sectors_to_MB(capacity), | |
322 | set_max, sectors_to_MB(set_max)); | |
323 | ||
7a3b7512 BZ |
324 | set_max = idedisk_set_max_address(drive, set_max, lba48); |
325 | ||
1da177e4 LT |
326 | if (set_max) { |
327 | drive->capacity64 = set_max; | |
328 | printk(KERN_INFO "%s: Host Protected Area disabled.\n", | |
329 | drive->name); | |
330 | } | |
331 | } | |
332 | ||
806f80a6 | 333 | static int ide_disk_get_capacity(ide_drive_t *drive) |
1da177e4 | 334 | { |
4dde4492 | 335 | u16 *id = drive->id; |
d1d76714 | 336 | int lba; |
1da177e4 | 337 | |
942dcd85 | 338 | if (ata_id_lba48_enabled(id)) { |
1da177e4 | 339 | /* drive speaks 48-bit LBA */ |
d1d76714 | 340 | lba = 1; |
48fb2688 | 341 | drive->capacity64 = ata_id_u64(id, ATA_ID_LBA_CAPACITY_2); |
a02227c9 | 342 | } else if (ata_id_has_lba(id) && ata_id_is_lba_capacity_ok(id)) { |
1da177e4 | 343 | /* drive speaks 28-bit LBA */ |
d1d76714 | 344 | lba = 1; |
48fb2688 | 345 | drive->capacity64 = ata_id_u32(id, ATA_ID_LBA_CAPACITY); |
1da177e4 LT |
346 | } else { |
347 | /* drive speaks boring old 28-bit CHS */ | |
d1d76714 | 348 | lba = 0; |
1da177e4 LT |
349 | drive->capacity64 = drive->cyl * drive->head * drive->sect; |
350 | } | |
d1d76714 BZ |
351 | |
352 | if (lba) { | |
353 | drive->dev_flags |= IDE_DFLAG_LBA; | |
354 | ||
355 | /* | |
356 | * If this device supports the Host Protected Area feature set, | |
357 | * then we may need to change our opinion about its capacity. | |
358 | */ | |
359 | if (ata_id_hpa_enabled(id)) | |
360 | idedisk_check_hpa(drive); | |
361 | } | |
0a70c7f6 BZ |
362 | |
363 | /* limit drive capacity to 137GB if LBA48 cannot be used */ | |
364 | if ((drive->dev_flags & IDE_DFLAG_LBA48) == 0 && | |
365 | drive->capacity64 > 1ULL << 28) { | |
366 | printk(KERN_WARNING "%s: cannot use LBA48 - full capacity " | |
367 | "%llu sectors (%llu MB)\n", | |
368 | drive->name, (unsigned long long)drive->capacity64, | |
369 | sectors_to_MB(drive->capacity64)); | |
370 | drive->capacity64 = 1ULL << 28; | |
371 | } | |
372 | ||
373 | if ((drive->hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && | |
374 | (drive->dev_flags & IDE_DFLAG_LBA48)) { | |
375 | if (drive->capacity64 > 1ULL << 28) { | |
376 | printk(KERN_INFO "%s: cannot use LBA48 DMA - PIO mode" | |
377 | " will be used for accessing sectors " | |
378 | "> %u\n", drive->name, 1 << 28); | |
379 | } else | |
380 | drive->dev_flags &= ~IDE_DFLAG_LBA48; | |
381 | } | |
806f80a6 BZ |
382 | |
383 | return 0; | |
1da177e4 LT |
384 | } |
385 | ||
165125e1 | 386 | static void idedisk_prepare_flush(struct request_queue *q, struct request *rq) |
1da177e4 LT |
387 | { |
388 | ide_drive_t *drive = q->queuedata; | |
395d8ef5 | 389 | ide_task_t *task = kmalloc(sizeof(*task), GFP_ATOMIC); |
1da177e4 | 390 | |
395d8ef5 BZ |
391 | /* FIXME: map struct ide_taskfile on rq->cmd[] */ |
392 | BUG_ON(task == NULL); | |
393 | ||
394 | memset(task, 0, sizeof(*task)); | |
ff2779b5 | 395 | if (ata_id_flush_ext_enabled(drive->id) && |
1da177e4 | 396 | (drive->capacity64 >= (1UL << 28))) |
aaaade3f | 397 | task->tf.command = ATA_CMD_FLUSH_EXT; |
1da177e4 | 398 | else |
aaaade3f | 399 | task->tf.command = ATA_CMD_FLUSH; |
395d8ef5 BZ |
400 | task->tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE | |
401 | IDE_TFLAG_DYN; | |
402 | task->data_phase = TASKFILE_NO_DATA; | |
1da177e4 | 403 | |
813a0eb2 | 404 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; |
4aff5e23 | 405 | rq->cmd_flags |= REQ_SOFTBARRIER; |
395d8ef5 | 406 | rq->special = task; |
1da177e4 LT |
407 | } |
408 | ||
8185d5aa BZ |
409 | ide_devset_get(multcount, mult_count); |
410 | ||
1da177e4 LT |
411 | /* |
412 | * This is tightly woven into the driver->do_special can not touch. | |
413 | * DON'T do it again until a total personality rewrite is committed. | |
414 | */ | |
415 | static int set_multcount(ide_drive_t *drive, int arg) | |
416 | { | |
dd47087b FT |
417 | struct request *rq; |
418 | int error; | |
1da177e4 | 419 | |
48fb2688 | 420 | if (arg < 0 || arg > (drive->id[ATA_ID_MAX_MULTSECT] & 0xff)) |
1497943e BZ |
421 | return -EINVAL; |
422 | ||
1da177e4 LT |
423 | if (drive->special.b.set_multmode) |
424 | return -EBUSY; | |
852738f3 | 425 | |
dd47087b FT |
426 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
427 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
852738f3 | 428 | |
1da177e4 LT |
429 | drive->mult_req = arg; |
430 | drive->special.b.set_multmode = 1; | |
dd47087b FT |
431 | error = blk_execute_rq(drive->queue, NULL, rq, 0); |
432 | blk_put_request(rq); | |
98416549 | 433 | |
1da177e4 LT |
434 | return (drive->mult_count == arg) ? 0 : -EIO; |
435 | } | |
436 | ||
97100fc8 | 437 | ide_devset_get_flag(nowerr, IDE_DFLAG_NOWERR); |
8185d5aa | 438 | |
1da177e4 LT |
439 | static int set_nowerr(ide_drive_t *drive, int arg) |
440 | { | |
1497943e BZ |
441 | if (arg < 0 || arg > 1) |
442 | return -EINVAL; | |
443 | ||
97100fc8 BZ |
444 | if (arg) |
445 | drive->dev_flags |= IDE_DFLAG_NOWERR; | |
446 | else | |
447 | drive->dev_flags &= ~IDE_DFLAG_NOWERR; | |
448 | ||
1da177e4 | 449 | drive->bad_wstat = arg ? BAD_R_STAT : BAD_W_STAT; |
97100fc8 | 450 | |
1da177e4 LT |
451 | return 0; |
452 | } | |
453 | ||
be3c096e BZ |
454 | static int ide_do_setfeature(ide_drive_t *drive, u8 feature, u8 nsect) |
455 | { | |
456 | ide_task_t task; | |
457 | ||
458 | memset(&task, 0, sizeof(task)); | |
459 | task.tf.feature = feature; | |
460 | task.tf.nsect = nsect; | |
461 | task.tf.command = ATA_CMD_SET_FEATURES; | |
462 | task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; | |
463 | ||
464 | return ide_no_data_taskfile(drive, &task); | |
465 | } | |
466 | ||
3e087b57 TH |
467 | static void update_ordered(ide_drive_t *drive) |
468 | { | |
4dde4492 | 469 | u16 *id = drive->id; |
3e087b57 TH |
470 | unsigned ordered = QUEUE_ORDERED_NONE; |
471 | prepare_flush_fn *prep_fn = NULL; | |
3e087b57 | 472 | |
97100fc8 | 473 | if (drive->dev_flags & IDE_DFLAG_WCACHE) { |
3e087b57 TH |
474 | unsigned long long capacity; |
475 | int barrier; | |
476 | /* | |
477 | * We must avoid issuing commands a drive does not | |
478 | * understand or we may crash it. We check flush cache | |
479 | * is supported. We also check we have the LBA48 flush | |
480 | * cache if the drive capacity is too large. By this | |
481 | * time we have trimmed the drive capacity if LBA48 is | |
482 | * not available so we don't need to recheck that. | |
483 | */ | |
5fef0e5c | 484 | capacity = ide_gd_capacity(drive); |
97100fc8 BZ |
485 | barrier = ata_id_flush_enabled(id) && |
486 | (drive->dev_flags & IDE_DFLAG_NOFLUSH) == 0 && | |
487 | ((drive->dev_flags & IDE_DFLAG_LBA48) == 0 || | |
488 | capacity <= (1ULL << 28) || | |
ff2779b5 | 489 | ata_id_flush_ext_enabled(id)); |
3e087b57 TH |
490 | |
491 | printk(KERN_INFO "%s: cache flushes %ssupported\n", | |
f7ad836c | 492 | drive->name, barrier ? "" : "not "); |
3e087b57 TH |
493 | |
494 | if (barrier) { | |
495 | ordered = QUEUE_ORDERED_DRAIN_FLUSH; | |
496 | prep_fn = idedisk_prepare_flush; | |
3e087b57 TH |
497 | } |
498 | } else | |
499 | ordered = QUEUE_ORDERED_DRAIN; | |
500 | ||
501 | blk_queue_ordered(drive->queue, ordered, prep_fn); | |
3e087b57 TH |
502 | } |
503 | ||
97100fc8 | 504 | ide_devset_get_flag(wcache, IDE_DFLAG_WCACHE); |
8185d5aa BZ |
505 | |
506 | static int set_wcache(ide_drive_t *drive, int arg) | |
1da177e4 | 507 | { |
3e087b57 | 508 | int err = 1; |
1da177e4 | 509 | |
1497943e BZ |
510 | if (arg < 0 || arg > 1) |
511 | return -EINVAL; | |
512 | ||
4b58f17d | 513 | if (ata_id_flush_enabled(drive->id)) { |
be3c096e BZ |
514 | err = ide_do_setfeature(drive, |
515 | arg ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF, 0); | |
97100fc8 BZ |
516 | if (err == 0) { |
517 | if (arg) | |
518 | drive->dev_flags |= IDE_DFLAG_WCACHE; | |
519 | else | |
520 | drive->dev_flags &= ~IDE_DFLAG_WCACHE; | |
521 | } | |
3e087b57 | 522 | } |
1da177e4 | 523 | |
3e087b57 | 524 | update_ordered(drive); |
1da177e4 | 525 | |
3e087b57 | 526 | return err; |
1da177e4 LT |
527 | } |
528 | ||
98416549 | 529 | static int do_idedisk_flushcache(ide_drive_t *drive) |
1da177e4 LT |
530 | { |
531 | ide_task_t args; | |
532 | ||
533 | memset(&args, 0, sizeof(ide_task_t)); | |
ff2779b5 | 534 | if (ata_id_flush_ext_enabled(drive->id)) |
aaaade3f | 535 | args.tf.command = ATA_CMD_FLUSH_EXT; |
1da177e4 | 536 | else |
aaaade3f | 537 | args.tf.command = ATA_CMD_FLUSH; |
657cc1a8 | 538 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
9a3c49be | 539 | return ide_no_data_taskfile(drive, &args); |
1da177e4 LT |
540 | } |
541 | ||
8185d5aa BZ |
542 | ide_devset_get(acoustic, acoustic); |
543 | ||
98416549 | 544 | static int set_acoustic(ide_drive_t *drive, int arg) |
1da177e4 | 545 | { |
1497943e BZ |
546 | if (arg < 0 || arg > 254) |
547 | return -EINVAL; | |
548 | ||
be3c096e BZ |
549 | ide_do_setfeature(drive, |
550 | arg ? SETFEATURES_AAM_ON : SETFEATURES_AAM_OFF, arg); | |
551 | ||
1da177e4 | 552 | drive->acoustic = arg; |
be3c096e | 553 | |
1da177e4 LT |
554 | return 0; |
555 | } | |
556 | ||
97100fc8 | 557 | ide_devset_get_flag(addressing, IDE_DFLAG_LBA48); |
8185d5aa | 558 | |
1da177e4 LT |
559 | /* |
560 | * drive->addressing: | |
561 | * 0: 28-bit | |
562 | * 1: 48-bit | |
563 | * 2: 48-bit capable doing 28-bit | |
564 | */ | |
aa768773 | 565 | static int set_addressing(ide_drive_t *drive, int arg) |
1da177e4 | 566 | { |
1497943e BZ |
567 | if (arg < 0 || arg > 2) |
568 | return -EINVAL; | |
569 | ||
35c13753 BZ |
570 | if (arg && ((drive->hwif->host_flags & IDE_HFLAG_NO_LBA48) || |
571 | ata_id_lba48_enabled(drive->id) == 0)) | |
98416549 | 572 | return -EIO; |
942dcd85 | 573 | |
35c13753 BZ |
574 | if (arg == 2) |
575 | arg = 0; | |
576 | ||
97100fc8 BZ |
577 | if (arg) |
578 | drive->dev_flags |= IDE_DFLAG_LBA48; | |
579 | else | |
580 | drive->dev_flags &= ~IDE_DFLAG_LBA48; | |
942dcd85 | 581 | |
1da177e4 LT |
582 | return 0; |
583 | } | |
584 | ||
f8790489 BZ |
585 | ide_ext_devset_rw(acoustic, acoustic); |
586 | ide_ext_devset_rw(address, addressing); | |
587 | ide_ext_devset_rw(multcount, multcount); | |
588 | ide_ext_devset_rw(wcache, wcache); | |
92f1f8fd | 589 | |
f8790489 | 590 | ide_ext_devset_rw_sync(nowerr, nowerr); |
92f1f8fd | 591 | |
806f80a6 BZ |
592 | static int ide_disk_check(ide_drive_t *drive, const char *s) |
593 | { | |
594 | return 1; | |
595 | } | |
596 | ||
597 | static void ide_disk_setup(ide_drive_t *drive) | |
1da177e4 | 598 | { |
1e874f44 | 599 | struct ide_disk_obj *idkp = drive->driver_data; |
c77380d4 | 600 | struct request_queue *q = drive->queue; |
238e4f14 | 601 | ide_hwif_t *hwif = drive->hwif; |
4dde4492 BZ |
602 | u16 *id = drive->id; |
603 | char *m = (char *)&id[ATA_ID_PROD]; | |
1da177e4 | 604 | unsigned long long capacity; |
1da177e4 | 605 | |
1e874f44 | 606 | ide_proc_register_driver(drive, idkp->driver); |
1da177e4 | 607 | |
97100fc8 | 608 | if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0) |
1da177e4 LT |
609 | return; |
610 | ||
97100fc8 | 611 | if (drive->dev_flags & IDE_DFLAG_REMOVABLE) { |
1da177e4 | 612 | /* |
98416549 | 613 | * Removable disks (eg. SYQUEST); ignore 'WD' drives |
1da177e4 | 614 | */ |
4dde4492 | 615 | if (m[0] != 'W' || m[1] != 'D') |
97100fc8 | 616 | drive->dev_flags |= IDE_DFLAG_DOORLOCKING; |
1da177e4 LT |
617 | } |
618 | ||
aa768773 | 619 | (void)set_addressing(drive, 1); |
1da177e4 | 620 | |
97100fc8 | 621 | if (drive->dev_flags & IDE_DFLAG_LBA48) { |
1da177e4 LT |
622 | int max_s = 2048; |
623 | ||
624 | if (max_s > hwif->rqsize) | |
625 | max_s = hwif->rqsize; | |
626 | ||
c77380d4 | 627 | blk_queue_max_sectors(q, max_s); |
1da177e4 LT |
628 | } |
629 | ||
98416549 | 630 | printk(KERN_INFO "%s: max request size: %dKiB\n", drive->name, |
c77380d4 BZ |
631 | q->max_sectors / 2); |
632 | ||
655772cc | 633 | if (ata_id_is_ssd(id)) |
c77380d4 | 634 | queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q); |
1da177e4 LT |
635 | |
636 | /* calculate drive capacity, and select LBA if possible */ | |
806f80a6 | 637 | ide_disk_get_capacity(drive); |
1da177e4 | 638 | |
1da177e4 LT |
639 | /* |
640 | * if possible, give fdisk access to more of the drive, | |
641 | * by correcting bios_cyls: | |
642 | */ | |
5fef0e5c | 643 | capacity = ide_gd_capacity(drive); |
98416549 | 644 | |
97100fc8 | 645 | if ((drive->dev_flags & IDE_DFLAG_FORCED_GEOM) == 0) { |
942dcd85 | 646 | if (ata_id_lba48_enabled(drive->id)) { |
1da177e4 LT |
647 | /* compatibility */ |
648 | drive->bios_sect = 63; | |
649 | drive->bios_head = 255; | |
650 | } | |
651 | ||
652 | if (drive->bios_sect && drive->bios_head) { | |
653 | unsigned int cap0 = capacity; /* truncate to 32 bits */ | |
654 | unsigned int cylsz, cyl; | |
655 | ||
656 | if (cap0 != capacity) | |
657 | drive->bios_cyl = 65535; | |
658 | else { | |
659 | cylsz = drive->bios_sect * drive->bios_head; | |
660 | cyl = cap0 / cylsz; | |
661 | if (cyl > 65535) | |
662 | cyl = 65535; | |
663 | if (cyl > drive->bios_cyl) | |
664 | drive->bios_cyl = cyl; | |
665 | } | |
666 | } | |
667 | } | |
668 | printk(KERN_INFO "%s: %llu sectors (%llu MB)", | |
669 | drive->name, capacity, sectors_to_MB(capacity)); | |
670 | ||
671 | /* Only print cache size when it was specified */ | |
4dde4492 BZ |
672 | if (id[ATA_ID_BUF_SIZE]) |
673 | printk(KERN_CONT " w/%dKiB Cache", id[ATA_ID_BUF_SIZE] / 2); | |
1da177e4 | 674 | |
3ab7efe8 BZ |
675 | printk(KERN_CONT ", CHS=%d/%d/%d\n", |
676 | drive->bios_cyl, drive->bios_head, drive->bios_sect); | |
1da177e4 | 677 | |
1da177e4 | 678 | /* write cache enabled? */ |
8a089c66 | 679 | if ((id[ATA_ID_CSFO] & 1) || ata_id_wcache_enabled(id)) |
97100fc8 | 680 | drive->dev_flags |= IDE_DFLAG_WCACHE; |
1da177e4 | 681 | |
8185d5aa | 682 | set_wcache(drive, 1); |
ae9f9f07 BZ |
683 | |
684 | if ((drive->dev_flags & IDE_DFLAG_LBA) == 0 && | |
685 | (drive->head == 0 || drive->head > 16)) { | |
686 | printk(KERN_ERR "%s: invalid geometry: %d physical heads?\n", | |
687 | drive->name, drive->head); | |
688 | drive->dev_flags &= ~IDE_DFLAG_ATTACH; | |
689 | } else | |
690 | drive->dev_flags |= IDE_DFLAG_ATTACH; | |
1da177e4 LT |
691 | } |
692 | ||
806f80a6 | 693 | static void ide_disk_flush(ide_drive_t *drive) |
1da177e4 | 694 | { |
97100fc8 BZ |
695 | if (ata_id_flush_enabled(drive->id) == 0 || |
696 | (drive->dev_flags & IDE_DFLAG_WCACHE) == 0) | |
1da177e4 LT |
697 | return; |
698 | ||
699 | if (do_idedisk_flushcache(drive)) | |
700 | printk(KERN_INFO "%s: wcache flush failed!\n", drive->name); | |
701 | } | |
702 | ||
806f80a6 BZ |
703 | static int ide_disk_init_media(ide_drive_t *drive, struct gendisk *disk) |
704 | { | |
705 | return 0; | |
706 | } | |
707 | ||
708 | static int ide_disk_set_doorlock(ide_drive_t *drive, struct gendisk *disk, | |
709 | int on) | |
29ec683f BZ |
710 | { |
711 | ide_task_t task; | |
81ee1bb5 BZ |
712 | int ret; |
713 | ||
714 | if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) == 0) | |
715 | return 0; | |
29ec683f BZ |
716 | |
717 | memset(&task, 0, sizeof(task)); | |
aaaade3f | 718 | task.tf.command = on ? ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK; |
657cc1a8 | 719 | task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
29ec683f | 720 | |
81ee1bb5 BZ |
721 | ret = ide_no_data_taskfile(drive, &task); |
722 | ||
723 | if (ret) | |
724 | drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING; | |
725 | ||
726 | return ret; | |
29ec683f | 727 | } |
806f80a6 BZ |
728 | |
729 | const struct ide_disk_ops ide_ata_disk_ops = { | |
730 | .check = ide_disk_check, | |
731 | .get_capacity = ide_disk_get_capacity, | |
732 | .setup = ide_disk_setup, | |
733 | .flush = ide_disk_flush, | |
734 | .init_media = ide_disk_init_media, | |
735 | .set_doorlock = ide_disk_set_doorlock, | |
736 | .do_request = ide_do_rw_disk, | |
806f80a6 BZ |
737 | .ioctl = ide_disk_ioctl, |
738 | }; |