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 LT |
30 | #include <linux/ide.h> |
31 | ||
32 | #include <asm/byteorder.h> | |
33 | #include <asm/irq.h> | |
34 | #include <asm/uaccess.h> | |
35 | #include <asm/io.h> | |
36 | #include <asm/div64.h> | |
37 | ||
f8790489 | 38 | #include "ide-disk.h" |
1da177e4 | 39 | |
ba76ae38 | 40 | static const u8 ide_rw_cmds[] = { |
aaaade3f BZ |
41 | ATA_CMD_READ_MULTI, |
42 | ATA_CMD_WRITE_MULTI, | |
43 | ATA_CMD_READ_MULTI_EXT, | |
44 | ATA_CMD_WRITE_MULTI_EXT, | |
45 | ATA_CMD_PIO_READ, | |
46 | ATA_CMD_PIO_WRITE, | |
47 | ATA_CMD_PIO_READ_EXT, | |
48 | ATA_CMD_PIO_WRITE_EXT, | |
49 | ATA_CMD_READ, | |
50 | ATA_CMD_WRITE, | |
51 | ATA_CMD_READ_EXT, | |
52 | ATA_CMD_WRITE_EXT, | |
ba76ae38 BZ |
53 | }; |
54 | ||
22aa4b32 | 55 | static void ide_tf_set_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 dma) |
ba76ae38 BZ |
56 | { |
57 | u8 index, lba48, write; | |
58 | ||
22aa4b32 BZ |
59 | lba48 = (cmd->tf_flags & IDE_TFLAG_LBA48) ? 2 : 0; |
60 | write = (cmd->tf_flags & IDE_TFLAG_WRITE) ? 1 : 0; | |
ba76ae38 | 61 | |
0dfb991c BZ |
62 | if (dma) { |
63 | cmd->protocol = ATA_PROT_DMA; | |
ba4b2e60 | 64 | index = 8; |
0dfb991c BZ |
65 | } else { |
66 | cmd->protocol = ATA_PROT_PIO; | |
67 | if (drive->mult_count) { | |
68 | cmd->tf_flags |= IDE_TFLAG_MULTI_PIO; | |
69 | index = 0; | |
70 | } else | |
71 | index = 4; | |
72 | } | |
ba76ae38 | 73 | |
22aa4b32 | 74 | cmd->tf.command = ide_rw_cmds[index + lba48 + write]; |
ba76ae38 BZ |
75 | } |
76 | ||
1da177e4 LT |
77 | /* |
78 | * __ide_do_rw_disk() issues READ and WRITE commands to a disk, | |
79 | * using LBA if supported, or CHS otherwise, to address sectors. | |
80 | */ | |
98416549 BZ |
81 | static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq, |
82 | sector_t block) | |
1da177e4 | 83 | { |
898ec223 | 84 | ide_hwif_t *hwif = drive->hwif; |
790d1239 | 85 | u16 nsectors = (u16)rq->nr_sectors; |
97100fc8 BZ |
86 | u8 lba48 = !!(drive->dev_flags & IDE_DFLAG_LBA48); |
87 | u8 dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA); | |
22aa4b32 BZ |
88 | struct ide_cmd cmd; |
89 | struct ide_taskfile *tf = &cmd.tf; | |
f6e29e35 | 90 | ide_startstop_t rc; |
1da177e4 | 91 | |
238e4f14 | 92 | if ((hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && lba48 && dma) { |
1da177e4 LT |
93 | if (block + rq->nr_sectors > 1ULL << 28) |
94 | dma = 0; | |
95 | else | |
96 | lba48 = 0; | |
97 | } | |
98 | ||
22aa4b32 BZ |
99 | memset(&cmd, 0, sizeof(cmd)); |
100 | cmd.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; | |
2bd06b23 | 101 | |
d1d76714 | 102 | if (drive->dev_flags & IDE_DFLAG_LBA) { |
1da177e4 | 103 | if (lba48) { |
c2f8311d MR |
104 | pr_debug("%s: LBA=0x%012llx\n", drive->name, |
105 | (unsigned long long)block); | |
1da177e4 | 106 | |
790d1239 | 107 | tf->hob_nsect = (nsectors >> 8) & 0xff; |
2bd06b23 BZ |
108 | tf->hob_lbal = (u8)(block >> 24); |
109 | if (sizeof(block) != 4) { | |
110 | tf->hob_lbam = (u8)((u64)block >> 32); | |
111 | tf->hob_lbah = (u8)((u64)block >> 40); | |
1da177e4 | 112 | } |
2bd06b23 | 113 | |
790d1239 | 114 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
115 | tf->lbal = (u8) block; |
116 | tf->lbam = (u8)(block >> 8); | |
117 | tf->lbah = (u8)(block >> 16); | |
6dd9b837 | 118 | |
22aa4b32 | 119 | cmd.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB); |
1da177e4 | 120 | } else { |
790d1239 | 121 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
122 | tf->lbal = block; |
123 | tf->lbam = block >>= 8; | |
124 | tf->lbah = block >>= 8; | |
125 | tf->device = (block >> 8) & 0xf; | |
1da177e4 | 126 | } |
d1d76714 BZ |
127 | |
128 | tf->device |= ATA_LBA; | |
1da177e4 | 129 | } else { |
98416549 BZ |
130 | unsigned int sect, head, cyl, track; |
131 | ||
1da177e4 LT |
132 | track = (int)block / drive->sect; |
133 | sect = (int)block % drive->sect + 1; | |
1da177e4 LT |
134 | head = track % drive->head; |
135 | cyl = track / drive->head; | |
136 | ||
137 | pr_debug("%s: CHS=%u/%u/%u\n", drive->name, cyl, head, sect); | |
138 | ||
790d1239 | 139 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
140 | tf->lbal = sect; |
141 | tf->lbam = cyl; | |
142 | tf->lbah = cyl >> 8; | |
143 | tf->device = head; | |
1da177e4 LT |
144 | } |
145 | ||
adb1af98 BZ |
146 | cmd.tf_flags |= IDE_TFLAG_FS; |
147 | ||
ba76ae38 | 148 | if (rq_data_dir(rq)) |
22aa4b32 | 149 | cmd.tf_flags |= IDE_TFLAG_WRITE; |
ba76ae38 | 150 | |
22aa4b32 BZ |
151 | ide_tf_set_cmd(drive, &cmd, dma); |
152 | cmd.rq = rq; | |
ba76ae38 | 153 | |
22981694 | 154 | if (dma == 0) { |
bf717c0a | 155 | ide_init_sg_cmd(&cmd, nsectors << 9); |
22981694 BZ |
156 | ide_map_sg(drive, &cmd); |
157 | } | |
158 | ||
22aa4b32 | 159 | rc = do_rw_taskfile(drive, &cmd); |
2bd06b23 | 160 | |
f6e29e35 | 161 | if (rc == ide_stopped && dma) { |
1da177e4 | 162 | /* fallback to PIO */ |
22aa4b32 BZ |
163 | cmd.tf_flags |= IDE_TFLAG_DMA_PIO_FALLBACK; |
164 | ide_tf_set_cmd(drive, &cmd, 0); | |
bf717c0a | 165 | ide_init_sg_cmd(&cmd, nsectors << 9); |
22aa4b32 | 166 | rc = do_rw_taskfile(drive, &cmd); |
1da177e4 LT |
167 | } |
168 | ||
f6e29e35 | 169 | return rc; |
1da177e4 LT |
170 | } |
171 | ||
172 | /* | |
173 | * 268435455 == 137439 MB or 28bit limit | |
174 | * 320173056 == 163929 MB or 48bit addressing | |
175 | * 1073741822 == 549756 MB or 48bit addressing fake drive | |
176 | */ | |
177 | ||
806f80a6 BZ |
178 | static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq, |
179 | sector_t block) | |
1da177e4 | 180 | { |
898ec223 | 181 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 | 182 | |
97100fc8 | 183 | BUG_ON(drive->dev_flags & IDE_DFLAG_BLOCKED); |
1da177e4 LT |
184 | |
185 | if (!blk_fs_request(rq)) { | |
186 | blk_dump_rq_flags(rq, "ide_do_rw_disk - bad command"); | |
89f78b32 BZ |
187 | if (rq->errors == 0) |
188 | rq->errors = -EIO; | |
130e8867 | 189 | ide_complete_rq(drive, -EIO, ide_rq_bytes(rq)); |
1da177e4 LT |
190 | return ide_stopped; |
191 | } | |
192 | ||
2bfb646c RP |
193 | ledtrig_ide_activity(); |
194 | ||
1da177e4 LT |
195 | pr_debug("%s: %sing: block=%llu, sectors=%lu, buffer=0x%08lx\n", |
196 | drive->name, rq_data_dir(rq) == READ ? "read" : "writ", | |
c2f8311d MR |
197 | (unsigned long long)block, rq->nr_sectors, |
198 | (unsigned long)rq->buffer); | |
1da177e4 LT |
199 | |
200 | if (hwif->rw_disk) | |
201 | hwif->rw_disk(drive, rq); | |
202 | ||
203 | return __ide_do_rw_disk(drive, rq, block); | |
204 | } | |
205 | ||
206 | /* | |
207 | * Queries for true maximum capacity of the drive. | |
208 | * Returns maximum LBA address (> 0) of the drive, 0 if failed. | |
209 | */ | |
7a3b7512 | 210 | static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48) |
1da177e4 | 211 | { |
22aa4b32 BZ |
212 | struct ide_cmd cmd; |
213 | struct ide_taskfile *tf = &cmd.tf; | |
7a3b7512 | 214 | u64 addr = 0; |
1da177e4 | 215 | |
22aa4b32 | 216 | memset(&cmd, 0, sizeof(cmd)); |
7a3b7512 | 217 | if (lba48) |
aaaade3f | 218 | tf->command = ATA_CMD_READ_NATIVE_MAX_EXT; |
7a3b7512 | 219 | else |
aaaade3f | 220 | tf->command = ATA_CMD_READ_NATIVE_MAX; |
650d841d | 221 | tf->device = ATA_LBA; |
22aa4b32 BZ |
222 | |
223 | cmd.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; | |
a3bbb9d8 | 224 | if (lba48) |
22aa4b32 BZ |
225 | cmd.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB); |
226 | ||
227 | ide_no_data_taskfile(drive, &cmd); | |
1da177e4 | 228 | |
1da177e4 | 229 | /* if OK, compute maximum address value */ |
47ab8348 | 230 | if (!(tf->status & ATA_ERR)) |
a501633c | 231 | addr = ide_get_lba_addr(tf, lba48) + 1; |
650d841d | 232 | |
1da177e4 LT |
233 | return addr; |
234 | } | |
235 | ||
236 | /* | |
237 | * Sets maximum virtual LBA address of the drive. | |
238 | * Returns new maximum virtual LBA address (> 0) or 0 on failure. | |
239 | */ | |
7a3b7512 | 240 | static u64 idedisk_set_max_address(ide_drive_t *drive, u64 addr_req, int lba48) |
1da177e4 | 241 | { |
22aa4b32 BZ |
242 | struct ide_cmd cmd; |
243 | struct ide_taskfile *tf = &cmd.tf; | |
7a3b7512 | 244 | u64 addr_set = 0; |
1da177e4 LT |
245 | |
246 | addr_req--; | |
22aa4b32 BZ |
247 | |
248 | memset(&cmd, 0, sizeof(cmd)); | |
650d841d BZ |
249 | tf->lbal = (addr_req >> 0) & 0xff; |
250 | tf->lbam = (addr_req >>= 8) & 0xff; | |
251 | tf->lbah = (addr_req >>= 8) & 0xff; | |
7a3b7512 BZ |
252 | if (lba48) { |
253 | tf->hob_lbal = (addr_req >>= 8) & 0xff; | |
254 | tf->hob_lbam = (addr_req >>= 8) & 0xff; | |
255 | tf->hob_lbah = (addr_req >>= 8) & 0xff; | |
aaaade3f | 256 | tf->command = ATA_CMD_SET_MAX_EXT; |
7a3b7512 BZ |
257 | } else { |
258 | tf->device = (addr_req >>= 8) & 0x0f; | |
aaaade3f | 259 | tf->command = ATA_CMD_SET_MAX; |
7a3b7512 BZ |
260 | } |
261 | tf->device |= ATA_LBA; | |
22aa4b32 BZ |
262 | |
263 | cmd.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; | |
a3bbb9d8 | 264 | if (lba48) |
22aa4b32 BZ |
265 | cmd.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB); |
266 | ||
267 | ide_no_data_taskfile(drive, &cmd); | |
268 | ||
1da177e4 | 269 | /* if OK, compute maximum address value */ |
47ab8348 | 270 | if (!(tf->status & ATA_ERR)) |
a501633c | 271 | addr_set = ide_get_lba_addr(tf, lba48) + 1; |
650d841d | 272 | |
1da177e4 LT |
273 | return addr_set; |
274 | } | |
275 | ||
276 | static unsigned long long sectors_to_MB(unsigned long long n) | |
277 | { | |
278 | n <<= 9; /* make it bytes */ | |
279 | do_div(n, 1000000); /* make it MB */ | |
280 | return n; | |
281 | } | |
282 | ||
b0244a00 BZ |
283 | /* |
284 | * Some disks report total number of sectors instead of | |
285 | * maximum sector address. We list them here. | |
286 | */ | |
287 | static const struct drive_list_entry hpa_list[] = { | |
288 | { "ST340823A", NULL }, | |
7062cdc5 | 289 | { "ST320413A", NULL }, |
b152fcd3 | 290 | { "ST310211A", NULL }, |
b0244a00 BZ |
291 | { NULL, NULL } |
292 | }; | |
293 | ||
858119e1 | 294 | static void idedisk_check_hpa(ide_drive_t *drive) |
1da177e4 LT |
295 | { |
296 | unsigned long long capacity, set_max; | |
942dcd85 | 297 | int lba48 = ata_id_lba48_enabled(drive->id); |
1da177e4 LT |
298 | |
299 | capacity = drive->capacity64; | |
7a3b7512 BZ |
300 | |
301 | set_max = idedisk_read_native_max_address(drive, lba48); | |
1da177e4 | 302 | |
b0244a00 BZ |
303 | if (ide_in_drive_list(drive->id, hpa_list)) { |
304 | /* | |
305 | * Since we are inclusive wrt to firmware revisions do this | |
306 | * extra check and apply the workaround only when needed. | |
307 | */ | |
308 | if (set_max == capacity + 1) | |
309 | set_max--; | |
310 | } | |
311 | ||
1da177e4 LT |
312 | if (set_max <= capacity) |
313 | return; | |
314 | ||
315 | printk(KERN_INFO "%s: Host Protected Area detected.\n" | |
316 | "\tcurrent capacity is %llu sectors (%llu MB)\n" | |
317 | "\tnative capacity is %llu sectors (%llu MB)\n", | |
318 | drive->name, | |
319 | capacity, sectors_to_MB(capacity), | |
320 | set_max, sectors_to_MB(set_max)); | |
321 | ||
7a3b7512 BZ |
322 | set_max = idedisk_set_max_address(drive, set_max, lba48); |
323 | ||
1da177e4 LT |
324 | if (set_max) { |
325 | drive->capacity64 = set_max; | |
326 | printk(KERN_INFO "%s: Host Protected Area disabled.\n", | |
327 | drive->name); | |
328 | } | |
329 | } | |
330 | ||
806f80a6 | 331 | static int ide_disk_get_capacity(ide_drive_t *drive) |
1da177e4 | 332 | { |
4dde4492 | 333 | u16 *id = drive->id; |
d1d76714 | 334 | int lba; |
1da177e4 | 335 | |
942dcd85 | 336 | if (ata_id_lba48_enabled(id)) { |
1da177e4 | 337 | /* drive speaks 48-bit LBA */ |
d1d76714 | 338 | lba = 1; |
48fb2688 | 339 | drive->capacity64 = ata_id_u64(id, ATA_ID_LBA_CAPACITY_2); |
a02227c9 | 340 | } else if (ata_id_has_lba(id) && ata_id_is_lba_capacity_ok(id)) { |
1da177e4 | 341 | /* drive speaks 28-bit LBA */ |
d1d76714 | 342 | lba = 1; |
48fb2688 | 343 | drive->capacity64 = ata_id_u32(id, ATA_ID_LBA_CAPACITY); |
1da177e4 LT |
344 | } else { |
345 | /* drive speaks boring old 28-bit CHS */ | |
d1d76714 | 346 | lba = 0; |
1da177e4 LT |
347 | drive->capacity64 = drive->cyl * drive->head * drive->sect; |
348 | } | |
d1d76714 BZ |
349 | |
350 | if (lba) { | |
351 | drive->dev_flags |= IDE_DFLAG_LBA; | |
352 | ||
353 | /* | |
354 | * If this device supports the Host Protected Area feature set, | |
355 | * then we may need to change our opinion about its capacity. | |
356 | */ | |
357 | if (ata_id_hpa_enabled(id)) | |
358 | idedisk_check_hpa(drive); | |
359 | } | |
0a70c7f6 BZ |
360 | |
361 | /* limit drive capacity to 137GB if LBA48 cannot be used */ | |
362 | if ((drive->dev_flags & IDE_DFLAG_LBA48) == 0 && | |
363 | drive->capacity64 > 1ULL << 28) { | |
364 | printk(KERN_WARNING "%s: cannot use LBA48 - full capacity " | |
365 | "%llu sectors (%llu MB)\n", | |
366 | drive->name, (unsigned long long)drive->capacity64, | |
367 | sectors_to_MB(drive->capacity64)); | |
368 | drive->capacity64 = 1ULL << 28; | |
369 | } | |
370 | ||
371 | if ((drive->hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && | |
372 | (drive->dev_flags & IDE_DFLAG_LBA48)) { | |
373 | if (drive->capacity64 > 1ULL << 28) { | |
374 | printk(KERN_INFO "%s: cannot use LBA48 DMA - PIO mode" | |
375 | " will be used for accessing sectors " | |
376 | "> %u\n", drive->name, 1 << 28); | |
377 | } else | |
378 | drive->dev_flags &= ~IDE_DFLAG_LBA48; | |
379 | } | |
806f80a6 BZ |
380 | |
381 | return 0; | |
1da177e4 LT |
382 | } |
383 | ||
165125e1 | 384 | static void idedisk_prepare_flush(struct request_queue *q, struct request *rq) |
1da177e4 LT |
385 | { |
386 | ide_drive_t *drive = q->queuedata; | |
22aa4b32 | 387 | struct ide_cmd *cmd = kmalloc(sizeof(*cmd), GFP_ATOMIC); |
1da177e4 | 388 | |
395d8ef5 | 389 | /* FIXME: map struct ide_taskfile on rq->cmd[] */ |
22aa4b32 | 390 | BUG_ON(cmd == NULL); |
395d8ef5 | 391 | |
22aa4b32 | 392 | memset(cmd, 0, sizeof(*cmd)); |
ff2779b5 | 393 | if (ata_id_flush_ext_enabled(drive->id) && |
1da177e4 | 394 | (drive->capacity64 >= (1UL << 28))) |
22aa4b32 | 395 | cmd->tf.command = ATA_CMD_FLUSH_EXT; |
1da177e4 | 396 | else |
22aa4b32 | 397 | cmd->tf.command = ATA_CMD_FLUSH; |
0dfb991c BZ |
398 | cmd->tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE | |
399 | IDE_TFLAG_DYN; | |
400 | cmd->protocol = ATA_PROT_NODATA; | |
1da177e4 | 401 | |
813a0eb2 | 402 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; |
4aff5e23 | 403 | rq->cmd_flags |= REQ_SOFTBARRIER; |
22aa4b32 | 404 | rq->special = cmd; |
1da177e4 LT |
405 | } |
406 | ||
8185d5aa BZ |
407 | ide_devset_get(multcount, mult_count); |
408 | ||
1da177e4 LT |
409 | /* |
410 | * This is tightly woven into the driver->do_special can not touch. | |
411 | * DON'T do it again until a total personality rewrite is committed. | |
412 | */ | |
413 | static int set_multcount(ide_drive_t *drive, int arg) | |
414 | { | |
dd47087b FT |
415 | struct request *rq; |
416 | int error; | |
1da177e4 | 417 | |
48fb2688 | 418 | if (arg < 0 || arg > (drive->id[ATA_ID_MAX_MULTSECT] & 0xff)) |
1497943e BZ |
419 | return -EINVAL; |
420 | ||
1da177e4 LT |
421 | if (drive->special.b.set_multmode) |
422 | return -EBUSY; | |
852738f3 | 423 | |
dd47087b FT |
424 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
425 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
852738f3 | 426 | |
1da177e4 LT |
427 | drive->mult_req = arg; |
428 | drive->special.b.set_multmode = 1; | |
dd47087b FT |
429 | error = blk_execute_rq(drive->queue, NULL, rq, 0); |
430 | blk_put_request(rq); | |
98416549 | 431 | |
1da177e4 LT |
432 | return (drive->mult_count == arg) ? 0 : -EIO; |
433 | } | |
434 | ||
97100fc8 | 435 | ide_devset_get_flag(nowerr, IDE_DFLAG_NOWERR); |
8185d5aa | 436 | |
1da177e4 LT |
437 | static int set_nowerr(ide_drive_t *drive, int arg) |
438 | { | |
1497943e BZ |
439 | if (arg < 0 || arg > 1) |
440 | return -EINVAL; | |
441 | ||
97100fc8 BZ |
442 | if (arg) |
443 | drive->dev_flags |= IDE_DFLAG_NOWERR; | |
444 | else | |
445 | drive->dev_flags &= ~IDE_DFLAG_NOWERR; | |
446 | ||
1da177e4 | 447 | drive->bad_wstat = arg ? BAD_R_STAT : BAD_W_STAT; |
97100fc8 | 448 | |
1da177e4 LT |
449 | return 0; |
450 | } | |
451 | ||
be3c096e BZ |
452 | static int ide_do_setfeature(ide_drive_t *drive, u8 feature, u8 nsect) |
453 | { | |
22aa4b32 | 454 | struct ide_cmd cmd; |
be3c096e | 455 | |
22aa4b32 BZ |
456 | memset(&cmd, 0, sizeof(cmd)); |
457 | cmd.tf.feature = feature; | |
458 | cmd.tf.nsect = nsect; | |
459 | cmd.tf.command = ATA_CMD_SET_FEATURES; | |
460 | cmd.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; | |
be3c096e | 461 | |
22aa4b32 | 462 | return ide_no_data_taskfile(drive, &cmd); |
be3c096e BZ |
463 | } |
464 | ||
3e087b57 TH |
465 | static void update_ordered(ide_drive_t *drive) |
466 | { | |
4dde4492 | 467 | u16 *id = drive->id; |
3e087b57 TH |
468 | unsigned ordered = QUEUE_ORDERED_NONE; |
469 | prepare_flush_fn *prep_fn = NULL; | |
3e087b57 | 470 | |
97100fc8 | 471 | if (drive->dev_flags & IDE_DFLAG_WCACHE) { |
3e087b57 TH |
472 | unsigned long long capacity; |
473 | int barrier; | |
474 | /* | |
475 | * We must avoid issuing commands a drive does not | |
476 | * understand or we may crash it. We check flush cache | |
477 | * is supported. We also check we have the LBA48 flush | |
478 | * cache if the drive capacity is too large. By this | |
479 | * time we have trimmed the drive capacity if LBA48 is | |
480 | * not available so we don't need to recheck that. | |
481 | */ | |
5fef0e5c | 482 | capacity = ide_gd_capacity(drive); |
97100fc8 BZ |
483 | barrier = ata_id_flush_enabled(id) && |
484 | (drive->dev_flags & IDE_DFLAG_NOFLUSH) == 0 && | |
485 | ((drive->dev_flags & IDE_DFLAG_LBA48) == 0 || | |
486 | capacity <= (1ULL << 28) || | |
ff2779b5 | 487 | ata_id_flush_ext_enabled(id)); |
3e087b57 TH |
488 | |
489 | printk(KERN_INFO "%s: cache flushes %ssupported\n", | |
f7ad836c | 490 | drive->name, barrier ? "" : "not "); |
3e087b57 TH |
491 | |
492 | if (barrier) { | |
493 | ordered = QUEUE_ORDERED_DRAIN_FLUSH; | |
494 | prep_fn = idedisk_prepare_flush; | |
3e087b57 TH |
495 | } |
496 | } else | |
497 | ordered = QUEUE_ORDERED_DRAIN; | |
498 | ||
499 | blk_queue_ordered(drive->queue, ordered, prep_fn); | |
3e087b57 TH |
500 | } |
501 | ||
97100fc8 | 502 | ide_devset_get_flag(wcache, IDE_DFLAG_WCACHE); |
8185d5aa BZ |
503 | |
504 | static int set_wcache(ide_drive_t *drive, int arg) | |
1da177e4 | 505 | { |
3e087b57 | 506 | int err = 1; |
1da177e4 | 507 | |
1497943e BZ |
508 | if (arg < 0 || arg > 1) |
509 | return -EINVAL; | |
510 | ||
4b58f17d | 511 | if (ata_id_flush_enabled(drive->id)) { |
be3c096e BZ |
512 | err = ide_do_setfeature(drive, |
513 | arg ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF, 0); | |
97100fc8 BZ |
514 | if (err == 0) { |
515 | if (arg) | |
516 | drive->dev_flags |= IDE_DFLAG_WCACHE; | |
517 | else | |
518 | drive->dev_flags &= ~IDE_DFLAG_WCACHE; | |
519 | } | |
3e087b57 | 520 | } |
1da177e4 | 521 | |
3e087b57 | 522 | update_ordered(drive); |
1da177e4 | 523 | |
3e087b57 | 524 | return err; |
1da177e4 LT |
525 | } |
526 | ||
98416549 | 527 | static int do_idedisk_flushcache(ide_drive_t *drive) |
1da177e4 | 528 | { |
22aa4b32 | 529 | struct ide_cmd cmd; |
1da177e4 | 530 | |
22aa4b32 | 531 | memset(&cmd, 0, sizeof(cmd)); |
ff2779b5 | 532 | if (ata_id_flush_ext_enabled(drive->id)) |
22aa4b32 | 533 | cmd.tf.command = ATA_CMD_FLUSH_EXT; |
1da177e4 | 534 | else |
22aa4b32 BZ |
535 | cmd.tf.command = ATA_CMD_FLUSH; |
536 | cmd.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; | |
537 | ||
538 | return ide_no_data_taskfile(drive, &cmd); | |
1da177e4 LT |
539 | } |
540 | ||
8185d5aa BZ |
541 | ide_devset_get(acoustic, acoustic); |
542 | ||
98416549 | 543 | static int set_acoustic(ide_drive_t *drive, int arg) |
1da177e4 | 544 | { |
1497943e BZ |
545 | if (arg < 0 || arg > 254) |
546 | return -EINVAL; | |
547 | ||
be3c096e BZ |
548 | ide_do_setfeature(drive, |
549 | arg ? SETFEATURES_AAM_ON : SETFEATURES_AAM_OFF, arg); | |
550 | ||
1da177e4 | 551 | drive->acoustic = arg; |
be3c096e | 552 | |
1da177e4 LT |
553 | return 0; |
554 | } | |
555 | ||
97100fc8 | 556 | ide_devset_get_flag(addressing, IDE_DFLAG_LBA48); |
8185d5aa | 557 | |
1da177e4 LT |
558 | /* |
559 | * drive->addressing: | |
560 | * 0: 28-bit | |
561 | * 1: 48-bit | |
562 | * 2: 48-bit capable doing 28-bit | |
563 | */ | |
aa768773 | 564 | static int set_addressing(ide_drive_t *drive, int arg) |
1da177e4 | 565 | { |
1497943e BZ |
566 | if (arg < 0 || arg > 2) |
567 | return -EINVAL; | |
568 | ||
35c13753 BZ |
569 | if (arg && ((drive->hwif->host_flags & IDE_HFLAG_NO_LBA48) || |
570 | ata_id_lba48_enabled(drive->id) == 0)) | |
98416549 | 571 | return -EIO; |
942dcd85 | 572 | |
35c13753 BZ |
573 | if (arg == 2) |
574 | arg = 0; | |
575 | ||
97100fc8 BZ |
576 | if (arg) |
577 | drive->dev_flags |= IDE_DFLAG_LBA48; | |
578 | else | |
579 | drive->dev_flags &= ~IDE_DFLAG_LBA48; | |
942dcd85 | 580 | |
1da177e4 LT |
581 | return 0; |
582 | } | |
583 | ||
f8790489 BZ |
584 | ide_ext_devset_rw(acoustic, acoustic); |
585 | ide_ext_devset_rw(address, addressing); | |
586 | ide_ext_devset_rw(multcount, multcount); | |
587 | ide_ext_devset_rw(wcache, wcache); | |
92f1f8fd | 588 | |
f8790489 | 589 | ide_ext_devset_rw_sync(nowerr, nowerr); |
92f1f8fd | 590 | |
806f80a6 BZ |
591 | static int ide_disk_check(ide_drive_t *drive, const char *s) |
592 | { | |
593 | return 1; | |
594 | } | |
595 | ||
596 | static void ide_disk_setup(ide_drive_t *drive) | |
1da177e4 | 597 | { |
1e874f44 | 598 | struct ide_disk_obj *idkp = drive->driver_data; |
c77380d4 | 599 | struct request_queue *q = drive->queue; |
238e4f14 | 600 | ide_hwif_t *hwif = drive->hwif; |
4dde4492 BZ |
601 | u16 *id = drive->id; |
602 | char *m = (char *)&id[ATA_ID_PROD]; | |
1da177e4 | 603 | unsigned long long capacity; |
1da177e4 | 604 | |
1e874f44 | 605 | ide_proc_register_driver(drive, idkp->driver); |
1da177e4 | 606 | |
97100fc8 | 607 | if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0) |
1da177e4 LT |
608 | return; |
609 | ||
97100fc8 | 610 | if (drive->dev_flags & IDE_DFLAG_REMOVABLE) { |
1da177e4 | 611 | /* |
98416549 | 612 | * Removable disks (eg. SYQUEST); ignore 'WD' drives |
1da177e4 | 613 | */ |
4dde4492 | 614 | if (m[0] != 'W' || m[1] != 'D') |
97100fc8 | 615 | drive->dev_flags |= IDE_DFLAG_DOORLOCKING; |
1da177e4 LT |
616 | } |
617 | ||
aa768773 | 618 | (void)set_addressing(drive, 1); |
1da177e4 | 619 | |
97100fc8 | 620 | if (drive->dev_flags & IDE_DFLAG_LBA48) { |
1da177e4 LT |
621 | int max_s = 2048; |
622 | ||
623 | if (max_s > hwif->rqsize) | |
624 | max_s = hwif->rqsize; | |
625 | ||
c77380d4 | 626 | blk_queue_max_sectors(q, max_s); |
1da177e4 LT |
627 | } |
628 | ||
98416549 | 629 | printk(KERN_INFO "%s: max request size: %dKiB\n", drive->name, |
c77380d4 BZ |
630 | q->max_sectors / 2); |
631 | ||
655772cc | 632 | if (ata_id_is_ssd(id)) |
c77380d4 | 633 | queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q); |
1da177e4 LT |
634 | |
635 | /* calculate drive capacity, and select LBA if possible */ | |
806f80a6 | 636 | ide_disk_get_capacity(drive); |
1da177e4 | 637 | |
1da177e4 LT |
638 | /* |
639 | * if possible, give fdisk access to more of the drive, | |
640 | * by correcting bios_cyls: | |
641 | */ | |
5fef0e5c | 642 | capacity = ide_gd_capacity(drive); |
98416549 | 643 | |
97100fc8 | 644 | if ((drive->dev_flags & IDE_DFLAG_FORCED_GEOM) == 0) { |
942dcd85 | 645 | if (ata_id_lba48_enabled(drive->id)) { |
1da177e4 LT |
646 | /* compatibility */ |
647 | drive->bios_sect = 63; | |
648 | drive->bios_head = 255; | |
649 | } | |
650 | ||
651 | if (drive->bios_sect && drive->bios_head) { | |
652 | unsigned int cap0 = capacity; /* truncate to 32 bits */ | |
653 | unsigned int cylsz, cyl; | |
654 | ||
655 | if (cap0 != capacity) | |
656 | drive->bios_cyl = 65535; | |
657 | else { | |
658 | cylsz = drive->bios_sect * drive->bios_head; | |
659 | cyl = cap0 / cylsz; | |
660 | if (cyl > 65535) | |
661 | cyl = 65535; | |
662 | if (cyl > drive->bios_cyl) | |
663 | drive->bios_cyl = cyl; | |
664 | } | |
665 | } | |
666 | } | |
667 | printk(KERN_INFO "%s: %llu sectors (%llu MB)", | |
668 | drive->name, capacity, sectors_to_MB(capacity)); | |
669 | ||
670 | /* Only print cache size when it was specified */ | |
4dde4492 BZ |
671 | if (id[ATA_ID_BUF_SIZE]) |
672 | printk(KERN_CONT " w/%dKiB Cache", id[ATA_ID_BUF_SIZE] / 2); | |
1da177e4 | 673 | |
3ab7efe8 BZ |
674 | printk(KERN_CONT ", CHS=%d/%d/%d\n", |
675 | drive->bios_cyl, drive->bios_head, drive->bios_sect); | |
1da177e4 | 676 | |
1da177e4 | 677 | /* write cache enabled? */ |
8a089c66 | 678 | if ((id[ATA_ID_CSFO] & 1) || ata_id_wcache_enabled(id)) |
97100fc8 | 679 | drive->dev_flags |= IDE_DFLAG_WCACHE; |
1da177e4 | 680 | |
8185d5aa | 681 | set_wcache(drive, 1); |
ae9f9f07 BZ |
682 | |
683 | if ((drive->dev_flags & IDE_DFLAG_LBA) == 0 && | |
684 | (drive->head == 0 || drive->head > 16)) { | |
685 | printk(KERN_ERR "%s: invalid geometry: %d physical heads?\n", | |
686 | drive->name, drive->head); | |
687 | drive->dev_flags &= ~IDE_DFLAG_ATTACH; | |
688 | } else | |
689 | drive->dev_flags |= IDE_DFLAG_ATTACH; | |
1da177e4 LT |
690 | } |
691 | ||
806f80a6 | 692 | static void ide_disk_flush(ide_drive_t *drive) |
1da177e4 | 693 | { |
97100fc8 BZ |
694 | if (ata_id_flush_enabled(drive->id) == 0 || |
695 | (drive->dev_flags & IDE_DFLAG_WCACHE) == 0) | |
1da177e4 LT |
696 | return; |
697 | ||
698 | if (do_idedisk_flushcache(drive)) | |
699 | printk(KERN_INFO "%s: wcache flush failed!\n", drive->name); | |
700 | } | |
701 | ||
806f80a6 BZ |
702 | static int ide_disk_init_media(ide_drive_t *drive, struct gendisk *disk) |
703 | { | |
704 | return 0; | |
705 | } | |
706 | ||
707 | static int ide_disk_set_doorlock(ide_drive_t *drive, struct gendisk *disk, | |
708 | int on) | |
29ec683f | 709 | { |
22aa4b32 | 710 | struct ide_cmd cmd; |
81ee1bb5 BZ |
711 | int ret; |
712 | ||
713 | if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) == 0) | |
714 | return 0; | |
29ec683f | 715 | |
22aa4b32 BZ |
716 | memset(&cmd, 0, sizeof(cmd)); |
717 | cmd.tf.command = on ? ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK; | |
718 | cmd.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; | |
29ec683f | 719 | |
22aa4b32 | 720 | ret = ide_no_data_taskfile(drive, &cmd); |
81ee1bb5 BZ |
721 | |
722 | if (ret) | |
723 | drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING; | |
724 | ||
725 | return ret; | |
29ec683f | 726 | } |
806f80a6 BZ |
727 | |
728 | const struct ide_disk_ops ide_ata_disk_ops = { | |
729 | .check = ide_disk_check, | |
730 | .get_capacity = ide_disk_get_capacity, | |
731 | .setup = ide_disk_setup, | |
732 | .flush = ide_disk_flush, | |
733 | .init_media = ide_disk_init_media, | |
734 | .set_doorlock = ide_disk_set_doorlock, | |
735 | .do_request = ide_do_rw_disk, | |
806f80a6 BZ |
736 | .ioctl = ide_disk_ioctl, |
737 | }; |