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