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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> | |
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 | ||
22aa4b32 | 65 | static void ide_tf_set_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 dma) |
ba76ae38 BZ |
66 | { |
67 | u8 index, lba48, write; | |
68 | ||
22aa4b32 BZ |
69 | lba48 = (cmd->tf_flags & IDE_TFLAG_LBA48) ? 2 : 0; |
70 | write = (cmd->tf_flags & IDE_TFLAG_WRITE) ? 1 : 0; | |
ba76ae38 BZ |
71 | |
72 | if (dma) | |
ba4b2e60 | 73 | index = 8; |
ba76ae38 BZ |
74 | else |
75 | index = drive->mult_count ? 0 : 4; | |
76 | ||
22aa4b32 | 77 | cmd->tf.command = ide_rw_cmds[index + lba48 + write]; |
ba76ae38 BZ |
78 | |
79 | if (dma) | |
80 | index = 8; /* fixup index */ | |
81 | ||
22aa4b32 | 82 | cmd->data_phase = ide_data_phases[index / 2 + write]; |
ba76ae38 BZ |
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); | |
22aa4b32 BZ |
96 | struct ide_cmd cmd; |
97 | struct ide_taskfile *tf = &cmd.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 | ||
22aa4b32 BZ |
112 | memset(&cmd, 0, sizeof(cmd)); |
113 | cmd.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 | |
22aa4b32 | 132 | cmd.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 | ||
adb1af98 BZ |
159 | cmd.tf_flags |= IDE_TFLAG_FS; |
160 | ||
ba76ae38 | 161 | if (rq_data_dir(rq)) |
22aa4b32 | 162 | cmd.tf_flags |= IDE_TFLAG_WRITE; |
ba76ae38 | 163 | |
22aa4b32 BZ |
164 | ide_tf_set_cmd(drive, &cmd, dma); |
165 | cmd.rq = rq; | |
ba76ae38 | 166 | |
22aa4b32 | 167 | rc = do_rw_taskfile(drive, &cmd); |
2bd06b23 | 168 | |
f6e29e35 | 169 | if (rc == ide_stopped && dma) { |
1da177e4 | 170 | /* fallback to PIO */ |
22aa4b32 BZ |
171 | cmd.tf_flags |= IDE_TFLAG_DMA_PIO_FALLBACK; |
172 | ide_tf_set_cmd(drive, &cmd, 0); | |
1da177e4 | 173 | ide_init_sg_cmd(drive, rq); |
22aa4b32 | 174 | rc = do_rw_taskfile(drive, &cmd); |
1da177e4 LT |
175 | } |
176 | ||
f6e29e35 | 177 | return rc; |
1da177e4 LT |
178 | } |
179 | ||
180 | /* | |
181 | * 268435455 == 137439 MB or 28bit limit | |
182 | * 320173056 == 163929 MB or 48bit addressing | |
183 | * 1073741822 == 549756 MB or 48bit addressing fake drive | |
184 | */ | |
185 | ||
806f80a6 BZ |
186 | static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq, |
187 | sector_t block) | |
1da177e4 | 188 | { |
898ec223 | 189 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 | 190 | |
97100fc8 | 191 | BUG_ON(drive->dev_flags & IDE_DFLAG_BLOCKED); |
1da177e4 LT |
192 | |
193 | if (!blk_fs_request(rq)) { | |
194 | blk_dump_rq_flags(rq, "ide_do_rw_disk - bad command"); | |
195 | ide_end_request(drive, 0, 0); | |
196 | return ide_stopped; | |
197 | } | |
198 | ||
2bfb646c RP |
199 | ledtrig_ide_activity(); |
200 | ||
1da177e4 LT |
201 | pr_debug("%s: %sing: block=%llu, sectors=%lu, buffer=0x%08lx\n", |
202 | drive->name, rq_data_dir(rq) == READ ? "read" : "writ", | |
c2f8311d MR |
203 | (unsigned long long)block, rq->nr_sectors, |
204 | (unsigned long)rq->buffer); | |
1da177e4 LT |
205 | |
206 | if (hwif->rw_disk) | |
207 | hwif->rw_disk(drive, rq); | |
208 | ||
209 | return __ide_do_rw_disk(drive, rq, block); | |
210 | } | |
211 | ||
212 | /* | |
213 | * Queries for true maximum capacity of the drive. | |
214 | * Returns maximum LBA address (> 0) of the drive, 0 if failed. | |
215 | */ | |
7a3b7512 | 216 | static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48) |
1da177e4 | 217 | { |
22aa4b32 BZ |
218 | struct ide_cmd cmd; |
219 | struct ide_taskfile *tf = &cmd.tf; | |
7a3b7512 | 220 | u64 addr = 0; |
1da177e4 | 221 | |
22aa4b32 | 222 | memset(&cmd, 0, sizeof(cmd)); |
7a3b7512 | 223 | if (lba48) |
aaaade3f | 224 | tf->command = ATA_CMD_READ_NATIVE_MAX_EXT; |
7a3b7512 | 225 | else |
aaaade3f | 226 | tf->command = ATA_CMD_READ_NATIVE_MAX; |
650d841d | 227 | tf->device = ATA_LBA; |
22aa4b32 BZ |
228 | |
229 | cmd.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; | |
a3bbb9d8 | 230 | if (lba48) |
22aa4b32 BZ |
231 | cmd.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB); |
232 | ||
233 | ide_no_data_taskfile(drive, &cmd); | |
1da177e4 | 234 | |
1da177e4 | 235 | /* if OK, compute maximum address value */ |
a501633c BZ |
236 | if ((tf->status & 0x01) == 0) |
237 | addr = ide_get_lba_addr(tf, lba48) + 1; | |
650d841d | 238 | |
1da177e4 LT |
239 | return addr; |
240 | } | |
241 | ||
242 | /* | |
243 | * Sets maximum virtual LBA address of the drive. | |
244 | * Returns new maximum virtual LBA address (> 0) or 0 on failure. | |
245 | */ | |
7a3b7512 | 246 | static u64 idedisk_set_max_address(ide_drive_t *drive, u64 addr_req, int lba48) |
1da177e4 | 247 | { |
22aa4b32 BZ |
248 | struct ide_cmd cmd; |
249 | struct ide_taskfile *tf = &cmd.tf; | |
7a3b7512 | 250 | u64 addr_set = 0; |
1da177e4 LT |
251 | |
252 | addr_req--; | |
22aa4b32 BZ |
253 | |
254 | memset(&cmd, 0, sizeof(cmd)); | |
650d841d BZ |
255 | tf->lbal = (addr_req >> 0) & 0xff; |
256 | tf->lbam = (addr_req >>= 8) & 0xff; | |
257 | tf->lbah = (addr_req >>= 8) & 0xff; | |
7a3b7512 BZ |
258 | if (lba48) { |
259 | tf->hob_lbal = (addr_req >>= 8) & 0xff; | |
260 | tf->hob_lbam = (addr_req >>= 8) & 0xff; | |
261 | tf->hob_lbah = (addr_req >>= 8) & 0xff; | |
aaaade3f | 262 | tf->command = ATA_CMD_SET_MAX_EXT; |
7a3b7512 BZ |
263 | } else { |
264 | tf->device = (addr_req >>= 8) & 0x0f; | |
aaaade3f | 265 | tf->command = ATA_CMD_SET_MAX; |
7a3b7512 BZ |
266 | } |
267 | tf->device |= ATA_LBA; | |
22aa4b32 BZ |
268 | |
269 | cmd.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; | |
a3bbb9d8 | 270 | if (lba48) |
22aa4b32 BZ |
271 | cmd.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB); |
272 | ||
273 | ide_no_data_taskfile(drive, &cmd); | |
274 | ||
1da177e4 | 275 | /* if OK, compute maximum address value */ |
a501633c BZ |
276 | if ((tf->status & 0x01) == 0) |
277 | addr_set = ide_get_lba_addr(tf, lba48) + 1; | |
650d841d | 278 | |
1da177e4 LT |
279 | return addr_set; |
280 | } | |
281 | ||
282 | static unsigned long long sectors_to_MB(unsigned long long n) | |
283 | { | |
284 | n <<= 9; /* make it bytes */ | |
285 | do_div(n, 1000000); /* make it MB */ | |
286 | return n; | |
287 | } | |
288 | ||
b0244a00 BZ |
289 | /* |
290 | * Some disks report total number of sectors instead of | |
291 | * maximum sector address. We list them here. | |
292 | */ | |
293 | static const struct drive_list_entry hpa_list[] = { | |
294 | { "ST340823A", NULL }, | |
7062cdc5 | 295 | { "ST320413A", NULL }, |
b152fcd3 | 296 | { "ST310211A", NULL }, |
b0244a00 BZ |
297 | { NULL, NULL } |
298 | }; | |
299 | ||
858119e1 | 300 | static void idedisk_check_hpa(ide_drive_t *drive) |
1da177e4 LT |
301 | { |
302 | unsigned long long capacity, set_max; | |
942dcd85 | 303 | int lba48 = ata_id_lba48_enabled(drive->id); |
1da177e4 LT |
304 | |
305 | capacity = drive->capacity64; | |
7a3b7512 BZ |
306 | |
307 | set_max = idedisk_read_native_max_address(drive, lba48); | |
1da177e4 | 308 | |
b0244a00 BZ |
309 | if (ide_in_drive_list(drive->id, hpa_list)) { |
310 | /* | |
311 | * Since we are inclusive wrt to firmware revisions do this | |
312 | * extra check and apply the workaround only when needed. | |
313 | */ | |
314 | if (set_max == capacity + 1) | |
315 | set_max--; | |
316 | } | |
317 | ||
1da177e4 LT |
318 | if (set_max <= capacity) |
319 | return; | |
320 | ||
321 | printk(KERN_INFO "%s: Host Protected Area detected.\n" | |
322 | "\tcurrent capacity is %llu sectors (%llu MB)\n" | |
323 | "\tnative capacity is %llu sectors (%llu MB)\n", | |
324 | drive->name, | |
325 | capacity, sectors_to_MB(capacity), | |
326 | set_max, sectors_to_MB(set_max)); | |
327 | ||
7a3b7512 BZ |
328 | set_max = idedisk_set_max_address(drive, set_max, lba48); |
329 | ||
1da177e4 LT |
330 | if (set_max) { |
331 | drive->capacity64 = set_max; | |
332 | printk(KERN_INFO "%s: Host Protected Area disabled.\n", | |
333 | drive->name); | |
334 | } | |
335 | } | |
336 | ||
806f80a6 | 337 | static int ide_disk_get_capacity(ide_drive_t *drive) |
1da177e4 | 338 | { |
4dde4492 | 339 | u16 *id = drive->id; |
d1d76714 | 340 | int lba; |
1da177e4 | 341 | |
942dcd85 | 342 | if (ata_id_lba48_enabled(id)) { |
1da177e4 | 343 | /* drive speaks 48-bit LBA */ |
d1d76714 | 344 | lba = 1; |
48fb2688 | 345 | drive->capacity64 = ata_id_u64(id, ATA_ID_LBA_CAPACITY_2); |
a02227c9 | 346 | } else if (ata_id_has_lba(id) && ata_id_is_lba_capacity_ok(id)) { |
1da177e4 | 347 | /* drive speaks 28-bit LBA */ |
d1d76714 | 348 | lba = 1; |
48fb2688 | 349 | drive->capacity64 = ata_id_u32(id, ATA_ID_LBA_CAPACITY); |
1da177e4 LT |
350 | } else { |
351 | /* drive speaks boring old 28-bit CHS */ | |
d1d76714 | 352 | lba = 0; |
1da177e4 LT |
353 | drive->capacity64 = drive->cyl * drive->head * drive->sect; |
354 | } | |
d1d76714 BZ |
355 | |
356 | if (lba) { | |
357 | drive->dev_flags |= IDE_DFLAG_LBA; | |
358 | ||
359 | /* | |
360 | * If this device supports the Host Protected Area feature set, | |
361 | * then we may need to change our opinion about its capacity. | |
362 | */ | |
363 | if (ata_id_hpa_enabled(id)) | |
364 | idedisk_check_hpa(drive); | |
365 | } | |
0a70c7f6 BZ |
366 | |
367 | /* limit drive capacity to 137GB if LBA48 cannot be used */ | |
368 | if ((drive->dev_flags & IDE_DFLAG_LBA48) == 0 && | |
369 | drive->capacity64 > 1ULL << 28) { | |
370 | printk(KERN_WARNING "%s: cannot use LBA48 - full capacity " | |
371 | "%llu sectors (%llu MB)\n", | |
372 | drive->name, (unsigned long long)drive->capacity64, | |
373 | sectors_to_MB(drive->capacity64)); | |
374 | drive->capacity64 = 1ULL << 28; | |
375 | } | |
376 | ||
377 | if ((drive->hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && | |
378 | (drive->dev_flags & IDE_DFLAG_LBA48)) { | |
379 | if (drive->capacity64 > 1ULL << 28) { | |
380 | printk(KERN_INFO "%s: cannot use LBA48 DMA - PIO mode" | |
381 | " will be used for accessing sectors " | |
382 | "> %u\n", drive->name, 1 << 28); | |
383 | } else | |
384 | drive->dev_flags &= ~IDE_DFLAG_LBA48; | |
385 | } | |
806f80a6 BZ |
386 | |
387 | return 0; | |
1da177e4 LT |
388 | } |
389 | ||
165125e1 | 390 | static void idedisk_prepare_flush(struct request_queue *q, struct request *rq) |
1da177e4 LT |
391 | { |
392 | ide_drive_t *drive = q->queuedata; | |
22aa4b32 | 393 | struct ide_cmd *cmd = kmalloc(sizeof(*cmd), GFP_ATOMIC); |
1da177e4 | 394 | |
395d8ef5 | 395 | /* FIXME: map struct ide_taskfile on rq->cmd[] */ |
22aa4b32 | 396 | BUG_ON(cmd == NULL); |
395d8ef5 | 397 | |
22aa4b32 | 398 | memset(cmd, 0, sizeof(*cmd)); |
ff2779b5 | 399 | if (ata_id_flush_ext_enabled(drive->id) && |
1da177e4 | 400 | (drive->capacity64 >= (1UL << 28))) |
22aa4b32 | 401 | cmd->tf.command = ATA_CMD_FLUSH_EXT; |
1da177e4 | 402 | else |
22aa4b32 BZ |
403 | cmd->tf.command = ATA_CMD_FLUSH; |
404 | cmd->tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE | | |
395d8ef5 | 405 | IDE_TFLAG_DYN; |
22aa4b32 | 406 | cmd->data_phase = TASKFILE_NO_DATA; |
1da177e4 | 407 | |
813a0eb2 | 408 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; |
4aff5e23 | 409 | rq->cmd_flags |= REQ_SOFTBARRIER; |
22aa4b32 | 410 | rq->special = cmd; |
1da177e4 LT |
411 | } |
412 | ||
8185d5aa BZ |
413 | ide_devset_get(multcount, mult_count); |
414 | ||
1da177e4 LT |
415 | /* |
416 | * This is tightly woven into the driver->do_special can not touch. | |
417 | * DON'T do it again until a total personality rewrite is committed. | |
418 | */ | |
419 | static int set_multcount(ide_drive_t *drive, int arg) | |
420 | { | |
dd47087b FT |
421 | struct request *rq; |
422 | int error; | |
1da177e4 | 423 | |
48fb2688 | 424 | if (arg < 0 || arg > (drive->id[ATA_ID_MAX_MULTSECT] & 0xff)) |
1497943e BZ |
425 | return -EINVAL; |
426 | ||
1da177e4 LT |
427 | if (drive->special.b.set_multmode) |
428 | return -EBUSY; | |
852738f3 | 429 | |
dd47087b FT |
430 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
431 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
852738f3 | 432 | |
1da177e4 LT |
433 | drive->mult_req = arg; |
434 | drive->special.b.set_multmode = 1; | |
dd47087b FT |
435 | error = blk_execute_rq(drive->queue, NULL, rq, 0); |
436 | blk_put_request(rq); | |
98416549 | 437 | |
1da177e4 LT |
438 | return (drive->mult_count == arg) ? 0 : -EIO; |
439 | } | |
440 | ||
97100fc8 | 441 | ide_devset_get_flag(nowerr, IDE_DFLAG_NOWERR); |
8185d5aa | 442 | |
1da177e4 LT |
443 | static int set_nowerr(ide_drive_t *drive, int arg) |
444 | { | |
1497943e BZ |
445 | if (arg < 0 || arg > 1) |
446 | return -EINVAL; | |
447 | ||
97100fc8 BZ |
448 | if (arg) |
449 | drive->dev_flags |= IDE_DFLAG_NOWERR; | |
450 | else | |
451 | drive->dev_flags &= ~IDE_DFLAG_NOWERR; | |
452 | ||
1da177e4 | 453 | drive->bad_wstat = arg ? BAD_R_STAT : BAD_W_STAT; |
97100fc8 | 454 | |
1da177e4 LT |
455 | return 0; |
456 | } | |
457 | ||
be3c096e BZ |
458 | static int ide_do_setfeature(ide_drive_t *drive, u8 feature, u8 nsect) |
459 | { | |
22aa4b32 | 460 | struct ide_cmd cmd; |
be3c096e | 461 | |
22aa4b32 BZ |
462 | memset(&cmd, 0, sizeof(cmd)); |
463 | cmd.tf.feature = feature; | |
464 | cmd.tf.nsect = nsect; | |
465 | cmd.tf.command = ATA_CMD_SET_FEATURES; | |
466 | cmd.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; | |
be3c096e | 467 | |
22aa4b32 | 468 | return ide_no_data_taskfile(drive, &cmd); |
be3c096e BZ |
469 | } |
470 | ||
3e087b57 TH |
471 | static void update_ordered(ide_drive_t *drive) |
472 | { | |
4dde4492 | 473 | u16 *id = drive->id; |
3e087b57 TH |
474 | unsigned ordered = QUEUE_ORDERED_NONE; |
475 | prepare_flush_fn *prep_fn = NULL; | |
3e087b57 | 476 | |
97100fc8 | 477 | if (drive->dev_flags & IDE_DFLAG_WCACHE) { |
3e087b57 TH |
478 | unsigned long long capacity; |
479 | int barrier; | |
480 | /* | |
481 | * We must avoid issuing commands a drive does not | |
482 | * understand or we may crash it. We check flush cache | |
483 | * is supported. We also check we have the LBA48 flush | |
484 | * cache if the drive capacity is too large. By this | |
485 | * time we have trimmed the drive capacity if LBA48 is | |
486 | * not available so we don't need to recheck that. | |
487 | */ | |
5fef0e5c | 488 | capacity = ide_gd_capacity(drive); |
97100fc8 BZ |
489 | barrier = ata_id_flush_enabled(id) && |
490 | (drive->dev_flags & IDE_DFLAG_NOFLUSH) == 0 && | |
491 | ((drive->dev_flags & IDE_DFLAG_LBA48) == 0 || | |
492 | capacity <= (1ULL << 28) || | |
ff2779b5 | 493 | ata_id_flush_ext_enabled(id)); |
3e087b57 TH |
494 | |
495 | printk(KERN_INFO "%s: cache flushes %ssupported\n", | |
f7ad836c | 496 | drive->name, barrier ? "" : "not "); |
3e087b57 TH |
497 | |
498 | if (barrier) { | |
499 | ordered = QUEUE_ORDERED_DRAIN_FLUSH; | |
500 | prep_fn = idedisk_prepare_flush; | |
3e087b57 TH |
501 | } |
502 | } else | |
503 | ordered = QUEUE_ORDERED_DRAIN; | |
504 | ||
505 | blk_queue_ordered(drive->queue, ordered, prep_fn); | |
3e087b57 TH |
506 | } |
507 | ||
97100fc8 | 508 | ide_devset_get_flag(wcache, IDE_DFLAG_WCACHE); |
8185d5aa BZ |
509 | |
510 | static int set_wcache(ide_drive_t *drive, int arg) | |
1da177e4 | 511 | { |
3e087b57 | 512 | int err = 1; |
1da177e4 | 513 | |
1497943e BZ |
514 | if (arg < 0 || arg > 1) |
515 | return -EINVAL; | |
516 | ||
4b58f17d | 517 | if (ata_id_flush_enabled(drive->id)) { |
be3c096e BZ |
518 | err = ide_do_setfeature(drive, |
519 | arg ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF, 0); | |
97100fc8 BZ |
520 | if (err == 0) { |
521 | if (arg) | |
522 | drive->dev_flags |= IDE_DFLAG_WCACHE; | |
523 | else | |
524 | drive->dev_flags &= ~IDE_DFLAG_WCACHE; | |
525 | } | |
3e087b57 | 526 | } |
1da177e4 | 527 | |
3e087b57 | 528 | update_ordered(drive); |
1da177e4 | 529 | |
3e087b57 | 530 | return err; |
1da177e4 LT |
531 | } |
532 | ||
98416549 | 533 | static int do_idedisk_flushcache(ide_drive_t *drive) |
1da177e4 | 534 | { |
22aa4b32 | 535 | struct ide_cmd cmd; |
1da177e4 | 536 | |
22aa4b32 | 537 | memset(&cmd, 0, sizeof(cmd)); |
ff2779b5 | 538 | if (ata_id_flush_ext_enabled(drive->id)) |
22aa4b32 | 539 | cmd.tf.command = ATA_CMD_FLUSH_EXT; |
1da177e4 | 540 | else |
22aa4b32 BZ |
541 | cmd.tf.command = ATA_CMD_FLUSH; |
542 | cmd.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; | |
543 | ||
544 | return ide_no_data_taskfile(drive, &cmd); | |
1da177e4 LT |
545 | } |
546 | ||
8185d5aa BZ |
547 | ide_devset_get(acoustic, acoustic); |
548 | ||
98416549 | 549 | static int set_acoustic(ide_drive_t *drive, int arg) |
1da177e4 | 550 | { |
1497943e BZ |
551 | if (arg < 0 || arg > 254) |
552 | return -EINVAL; | |
553 | ||
be3c096e BZ |
554 | ide_do_setfeature(drive, |
555 | arg ? SETFEATURES_AAM_ON : SETFEATURES_AAM_OFF, arg); | |
556 | ||
1da177e4 | 557 | drive->acoustic = arg; |
be3c096e | 558 | |
1da177e4 LT |
559 | return 0; |
560 | } | |
561 | ||
97100fc8 | 562 | ide_devset_get_flag(addressing, IDE_DFLAG_LBA48); |
8185d5aa | 563 | |
1da177e4 LT |
564 | /* |
565 | * drive->addressing: | |
566 | * 0: 28-bit | |
567 | * 1: 48-bit | |
568 | * 2: 48-bit capable doing 28-bit | |
569 | */ | |
aa768773 | 570 | static int set_addressing(ide_drive_t *drive, int arg) |
1da177e4 | 571 | { |
1497943e BZ |
572 | if (arg < 0 || arg > 2) |
573 | return -EINVAL; | |
574 | ||
35c13753 BZ |
575 | if (arg && ((drive->hwif->host_flags & IDE_HFLAG_NO_LBA48) || |
576 | ata_id_lba48_enabled(drive->id) == 0)) | |
98416549 | 577 | return -EIO; |
942dcd85 | 578 | |
35c13753 BZ |
579 | if (arg == 2) |
580 | arg = 0; | |
581 | ||
97100fc8 BZ |
582 | if (arg) |
583 | drive->dev_flags |= IDE_DFLAG_LBA48; | |
584 | else | |
585 | drive->dev_flags &= ~IDE_DFLAG_LBA48; | |
942dcd85 | 586 | |
1da177e4 LT |
587 | return 0; |
588 | } | |
589 | ||
f8790489 BZ |
590 | ide_ext_devset_rw(acoustic, acoustic); |
591 | ide_ext_devset_rw(address, addressing); | |
592 | ide_ext_devset_rw(multcount, multcount); | |
593 | ide_ext_devset_rw(wcache, wcache); | |
92f1f8fd | 594 | |
f8790489 | 595 | ide_ext_devset_rw_sync(nowerr, nowerr); |
92f1f8fd | 596 | |
806f80a6 BZ |
597 | static int ide_disk_check(ide_drive_t *drive, const char *s) |
598 | { | |
599 | return 1; | |
600 | } | |
601 | ||
602 | static void ide_disk_setup(ide_drive_t *drive) | |
1da177e4 | 603 | { |
1e874f44 | 604 | struct ide_disk_obj *idkp = drive->driver_data; |
c77380d4 | 605 | struct request_queue *q = drive->queue; |
238e4f14 | 606 | ide_hwif_t *hwif = drive->hwif; |
4dde4492 BZ |
607 | u16 *id = drive->id; |
608 | char *m = (char *)&id[ATA_ID_PROD]; | |
1da177e4 | 609 | unsigned long long capacity; |
1da177e4 | 610 | |
1e874f44 | 611 | ide_proc_register_driver(drive, idkp->driver); |
1da177e4 | 612 | |
97100fc8 | 613 | if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0) |
1da177e4 LT |
614 | return; |
615 | ||
97100fc8 | 616 | if (drive->dev_flags & IDE_DFLAG_REMOVABLE) { |
1da177e4 | 617 | /* |
98416549 | 618 | * Removable disks (eg. SYQUEST); ignore 'WD' drives |
1da177e4 | 619 | */ |
4dde4492 | 620 | if (m[0] != 'W' || m[1] != 'D') |
97100fc8 | 621 | drive->dev_flags |= IDE_DFLAG_DOORLOCKING; |
1da177e4 LT |
622 | } |
623 | ||
aa768773 | 624 | (void)set_addressing(drive, 1); |
1da177e4 | 625 | |
97100fc8 | 626 | if (drive->dev_flags & IDE_DFLAG_LBA48) { |
1da177e4 LT |
627 | int max_s = 2048; |
628 | ||
629 | if (max_s > hwif->rqsize) | |
630 | max_s = hwif->rqsize; | |
631 | ||
c77380d4 | 632 | blk_queue_max_sectors(q, max_s); |
1da177e4 LT |
633 | } |
634 | ||
98416549 | 635 | printk(KERN_INFO "%s: max request size: %dKiB\n", drive->name, |
c77380d4 BZ |
636 | q->max_sectors / 2); |
637 | ||
655772cc | 638 | if (ata_id_is_ssd(id)) |
c77380d4 | 639 | queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q); |
1da177e4 LT |
640 | |
641 | /* calculate drive capacity, and select LBA if possible */ | |
806f80a6 | 642 | ide_disk_get_capacity(drive); |
1da177e4 | 643 | |
1da177e4 LT |
644 | /* |
645 | * if possible, give fdisk access to more of the drive, | |
646 | * by correcting bios_cyls: | |
647 | */ | |
5fef0e5c | 648 | capacity = ide_gd_capacity(drive); |
98416549 | 649 | |
97100fc8 | 650 | if ((drive->dev_flags & IDE_DFLAG_FORCED_GEOM) == 0) { |
942dcd85 | 651 | if (ata_id_lba48_enabled(drive->id)) { |
1da177e4 LT |
652 | /* compatibility */ |
653 | drive->bios_sect = 63; | |
654 | drive->bios_head = 255; | |
655 | } | |
656 | ||
657 | if (drive->bios_sect && drive->bios_head) { | |
658 | unsigned int cap0 = capacity; /* truncate to 32 bits */ | |
659 | unsigned int cylsz, cyl; | |
660 | ||
661 | if (cap0 != capacity) | |
662 | drive->bios_cyl = 65535; | |
663 | else { | |
664 | cylsz = drive->bios_sect * drive->bios_head; | |
665 | cyl = cap0 / cylsz; | |
666 | if (cyl > 65535) | |
667 | cyl = 65535; | |
668 | if (cyl > drive->bios_cyl) | |
669 | drive->bios_cyl = cyl; | |
670 | } | |
671 | } | |
672 | } | |
673 | printk(KERN_INFO "%s: %llu sectors (%llu MB)", | |
674 | drive->name, capacity, sectors_to_MB(capacity)); | |
675 | ||
676 | /* Only print cache size when it was specified */ | |
4dde4492 BZ |
677 | if (id[ATA_ID_BUF_SIZE]) |
678 | printk(KERN_CONT " w/%dKiB Cache", id[ATA_ID_BUF_SIZE] / 2); | |
1da177e4 | 679 | |
3ab7efe8 BZ |
680 | printk(KERN_CONT ", CHS=%d/%d/%d\n", |
681 | drive->bios_cyl, drive->bios_head, drive->bios_sect); | |
1da177e4 | 682 | |
1da177e4 | 683 | /* write cache enabled? */ |
8a089c66 | 684 | if ((id[ATA_ID_CSFO] & 1) || ata_id_wcache_enabled(id)) |
97100fc8 | 685 | drive->dev_flags |= IDE_DFLAG_WCACHE; |
1da177e4 | 686 | |
8185d5aa | 687 | set_wcache(drive, 1); |
ae9f9f07 BZ |
688 | |
689 | if ((drive->dev_flags & IDE_DFLAG_LBA) == 0 && | |
690 | (drive->head == 0 || drive->head > 16)) { | |
691 | printk(KERN_ERR "%s: invalid geometry: %d physical heads?\n", | |
692 | drive->name, drive->head); | |
693 | drive->dev_flags &= ~IDE_DFLAG_ATTACH; | |
694 | } else | |
695 | drive->dev_flags |= IDE_DFLAG_ATTACH; | |
1da177e4 LT |
696 | } |
697 | ||
806f80a6 | 698 | static void ide_disk_flush(ide_drive_t *drive) |
1da177e4 | 699 | { |
97100fc8 BZ |
700 | if (ata_id_flush_enabled(drive->id) == 0 || |
701 | (drive->dev_flags & IDE_DFLAG_WCACHE) == 0) | |
1da177e4 LT |
702 | return; |
703 | ||
704 | if (do_idedisk_flushcache(drive)) | |
705 | printk(KERN_INFO "%s: wcache flush failed!\n", drive->name); | |
706 | } | |
707 | ||
806f80a6 BZ |
708 | static int ide_disk_init_media(ide_drive_t *drive, struct gendisk *disk) |
709 | { | |
710 | return 0; | |
711 | } | |
712 | ||
713 | static int ide_disk_set_doorlock(ide_drive_t *drive, struct gendisk *disk, | |
714 | int on) | |
29ec683f | 715 | { |
22aa4b32 | 716 | struct ide_cmd cmd; |
81ee1bb5 BZ |
717 | int ret; |
718 | ||
719 | if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) == 0) | |
720 | return 0; | |
29ec683f | 721 | |
22aa4b32 BZ |
722 | memset(&cmd, 0, sizeof(cmd)); |
723 | cmd.tf.command = on ? ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK; | |
724 | cmd.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; | |
29ec683f | 725 | |
22aa4b32 | 726 | ret = ide_no_data_taskfile(drive, &cmd); |
81ee1bb5 BZ |
727 | |
728 | if (ret) | |
729 | drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING; | |
730 | ||
731 | return ret; | |
29ec683f | 732 | } |
806f80a6 BZ |
733 | |
734 | const struct ide_disk_ops ide_ata_disk_ops = { | |
735 | .check = ide_disk_check, | |
736 | .get_capacity = ide_disk_get_capacity, | |
737 | .setup = ide_disk_setup, | |
738 | .flush = ide_disk_flush, | |
739 | .init_media = ide_disk_init_media, | |
740 | .set_doorlock = ide_disk_set_doorlock, | |
741 | .do_request = ide_do_rw_disk, | |
806f80a6 BZ |
742 | .ioctl = ide_disk_ioctl, |
743 | }; |