Commit | Line | Data |
---|---|---|
b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
59bca8cc BZ |
3 | * Copyright (C) 1994-1998 Linus Torvalds & authors (see below) |
4 | * Copyright (C) 1998-2002 Linux ATA Development | |
5 | * Andre Hedrick <andre@linux-ide.org> | |
ccd32e22 | 6 | * Copyright (C) 2003 Red Hat |
59bca8cc | 7 | * Copyright (C) 2003-2005, 2007 Bartlomiej Zolnierkiewicz |
1da177e4 LT |
8 | */ |
9 | ||
10 | /* | |
11 | * Mostly written by Mark Lord <mlord@pobox.com> | |
12 | * and Gadi Oxman <gadio@netvision.net.il> | |
13 | * and Andre Hedrick <andre@linux-ide.org> | |
14 | * | |
15 | * This is the IDE/ATA disk driver, as evolved from hd.c and ide.c. | |
1da177e4 LT |
16 | */ |
17 | ||
1da177e4 LT |
18 | #include <linux/types.h> |
19 | #include <linux/string.h> | |
20 | #include <linux/kernel.h> | |
21 | #include <linux/timer.h> | |
22 | #include <linux/mm.h> | |
23 | #include <linux/interrupt.h> | |
24 | #include <linux/major.h> | |
25 | #include <linux/errno.h> | |
26 | #include <linux/genhd.h> | |
27 | #include <linux/slab.h> | |
28 | #include <linux/delay.h> | |
cf8b8975 | 29 | #include <linux/mutex.h> |
2bfb646c | 30 | #include <linux/leds.h> |
1da177e4 LT |
31 | #include <linux/ide.h> |
32 | ||
33 | #include <asm/byteorder.h> | |
34 | #include <asm/irq.h> | |
7c0f6ba6 | 35 | #include <linux/uaccess.h> |
1da177e4 LT |
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 | ||
22aa4b32 | 56 | static void ide_tf_set_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 dma) |
ba76ae38 BZ |
57 | { |
58 | u8 index, lba48, write; | |
59 | ||
22aa4b32 BZ |
60 | lba48 = (cmd->tf_flags & IDE_TFLAG_LBA48) ? 2 : 0; |
61 | write = (cmd->tf_flags & IDE_TFLAG_WRITE) ? 1 : 0; | |
ba76ae38 | 62 | |
0dfb991c BZ |
63 | if (dma) { |
64 | cmd->protocol = ATA_PROT_DMA; | |
ba4b2e60 | 65 | index = 8; |
0dfb991c BZ |
66 | } else { |
67 | cmd->protocol = ATA_PROT_PIO; | |
68 | if (drive->mult_count) { | |
69 | cmd->tf_flags |= IDE_TFLAG_MULTI_PIO; | |
70 | index = 0; | |
71 | } else | |
72 | index = 4; | |
73 | } | |
ba76ae38 | 74 | |
22aa4b32 | 75 | cmd->tf.command = ide_rw_cmds[index + lba48 + write]; |
ba76ae38 BZ |
76 | } |
77 | ||
1da177e4 LT |
78 | /* |
79 | * __ide_do_rw_disk() issues READ and WRITE commands to a disk, | |
80 | * using LBA if supported, or CHS otherwise, to address sectors. | |
81 | */ | |
98416549 BZ |
82 | static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq, |
83 | sector_t block) | |
1da177e4 | 84 | { |
898ec223 | 85 | ide_hwif_t *hwif = drive->hwif; |
9780e2dd | 86 | u16 nsectors = (u16)blk_rq_sectors(rq); |
97100fc8 BZ |
87 | u8 lba48 = !!(drive->dev_flags & IDE_DFLAG_LBA48); |
88 | u8 dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA); | |
22aa4b32 BZ |
89 | struct ide_cmd cmd; |
90 | struct ide_taskfile *tf = &cmd.tf; | |
f6e29e35 | 91 | ide_startstop_t rc; |
1da177e4 | 92 | |
238e4f14 | 93 | if ((hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && lba48 && dma) { |
9780e2dd | 94 | if (block + blk_rq_sectors(rq) > 1ULL << 28) |
1da177e4 LT |
95 | dma = 0; |
96 | else | |
97 | lba48 = 0; | |
98 | } | |
99 | ||
22aa4b32 | 100 | memset(&cmd, 0, sizeof(cmd)); |
60f85019 SS |
101 | cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE; |
102 | cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE; | |
2bd06b23 | 103 | |
d1d76714 | 104 | if (drive->dev_flags & IDE_DFLAG_LBA) { |
1da177e4 | 105 | if (lba48) { |
c2f8311d MR |
106 | pr_debug("%s: LBA=0x%012llx\n", drive->name, |
107 | (unsigned long long)block); | |
1da177e4 | 108 | |
790d1239 | 109 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
110 | tf->lbal = (u8) block; |
111 | tf->lbam = (u8)(block >> 8); | |
112 | tf->lbah = (u8)(block >> 16); | |
745483f1 SS |
113 | tf->device = ATA_LBA; |
114 | ||
115 | tf = &cmd.hob; | |
116 | tf->nsect = (nsectors >> 8) & 0xff; | |
117 | tf->lbal = (u8)(block >> 24); | |
118 | if (sizeof(block) != 4) { | |
119 | tf->lbam = (u8)((u64)block >> 32); | |
120 | tf->lbah = (u8)((u64)block >> 40); | |
121 | } | |
6dd9b837 | 122 | |
60f85019 SS |
123 | cmd.valid.out.hob = IDE_VALID_OUT_HOB; |
124 | cmd.valid.in.hob = IDE_VALID_IN_HOB; | |
125 | cmd.tf_flags |= IDE_TFLAG_LBA48; | |
1da177e4 | 126 | } else { |
790d1239 | 127 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
128 | tf->lbal = block; |
129 | tf->lbam = block >>= 8; | |
130 | tf->lbah = block >>= 8; | |
745483f1 | 131 | tf->device = ((block >> 8) & 0xf) | ATA_LBA; |
1da177e4 LT |
132 | } |
133 | } else { | |
98416549 BZ |
134 | unsigned int sect, head, cyl, track; |
135 | ||
1da177e4 LT |
136 | track = (int)block / drive->sect; |
137 | sect = (int)block % drive->sect + 1; | |
1da177e4 LT |
138 | head = track % drive->head; |
139 | cyl = track / drive->head; | |
140 | ||
141 | pr_debug("%s: CHS=%u/%u/%u\n", drive->name, cyl, head, sect); | |
142 | ||
790d1239 | 143 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
144 | tf->lbal = sect; |
145 | tf->lbam = cyl; | |
146 | tf->lbah = cyl >> 8; | |
147 | tf->device = head; | |
1da177e4 LT |
148 | } |
149 | ||
adb1af98 BZ |
150 | cmd.tf_flags |= IDE_TFLAG_FS; |
151 | ||
ba76ae38 | 152 | if (rq_data_dir(rq)) |
22aa4b32 | 153 | cmd.tf_flags |= IDE_TFLAG_WRITE; |
ba76ae38 | 154 | |
22aa4b32 BZ |
155 | ide_tf_set_cmd(drive, &cmd, dma); |
156 | cmd.rq = rq; | |
ba76ae38 | 157 | |
22981694 | 158 | if (dma == 0) { |
bf717c0a | 159 | ide_init_sg_cmd(&cmd, nsectors << 9); |
22981694 BZ |
160 | ide_map_sg(drive, &cmd); |
161 | } | |
162 | ||
22aa4b32 | 163 | rc = do_rw_taskfile(drive, &cmd); |
2bd06b23 | 164 | |
f6e29e35 | 165 | if (rc == ide_stopped && dma) { |
1da177e4 | 166 | /* fallback to PIO */ |
22aa4b32 BZ |
167 | cmd.tf_flags |= IDE_TFLAG_DMA_PIO_FALLBACK; |
168 | ide_tf_set_cmd(drive, &cmd, 0); | |
bf717c0a | 169 | ide_init_sg_cmd(&cmd, nsectors << 9); |
22aa4b32 | 170 | rc = do_rw_taskfile(drive, &cmd); |
1da177e4 LT |
171 | } |
172 | ||
f6e29e35 | 173 | return rc; |
1da177e4 LT |
174 | } |
175 | ||
176 | /* | |
177 | * 268435455 == 137439 MB or 28bit limit | |
178 | * 320173056 == 163929 MB or 48bit addressing | |
179 | * 1073741822 == 549756 MB or 48bit addressing fake drive | |
180 | */ | |
181 | ||
806f80a6 BZ |
182 | static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq, |
183 | sector_t block) | |
1da177e4 | 184 | { |
898ec223 | 185 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 | 186 | |
97100fc8 | 187 | BUG_ON(drive->dev_flags & IDE_DFLAG_BLOCKED); |
aebf526b | 188 | BUG_ON(blk_rq_is_passthrough(rq)); |
1da177e4 | 189 | |
eb25cb99 | 190 | ledtrig_disk_activity(); |
2bfb646c | 191 | |
b4f42e28 | 192 | pr_debug("%s: %sing: block=%llu, sectors=%u\n", |
1da177e4 | 193 | drive->name, rq_data_dir(rq) == READ ? "read" : "writ", |
b4f42e28 | 194 | (unsigned long long)block, blk_rq_sectors(rq)); |
1da177e4 LT |
195 | |
196 | if (hwif->rw_disk) | |
197 | hwif->rw_disk(drive, rq); | |
198 | ||
199 | return __ide_do_rw_disk(drive, rq, block); | |
200 | } | |
201 | ||
202 | /* | |
203 | * Queries for true maximum capacity of the drive. | |
204 | * Returns maximum LBA address (> 0) of the drive, 0 if failed. | |
205 | */ | |
7a3b7512 | 206 | static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48) |
1da177e4 | 207 | { |
22aa4b32 BZ |
208 | struct ide_cmd cmd; |
209 | struct ide_taskfile *tf = &cmd.tf; | |
7a3b7512 | 210 | u64 addr = 0; |
1da177e4 | 211 | |
22aa4b32 | 212 | memset(&cmd, 0, sizeof(cmd)); |
7a3b7512 | 213 | if (lba48) |
aaaade3f | 214 | tf->command = ATA_CMD_READ_NATIVE_MAX_EXT; |
7a3b7512 | 215 | else |
aaaade3f | 216 | tf->command = ATA_CMD_READ_NATIVE_MAX; |
650d841d | 217 | tf->device = ATA_LBA; |
22aa4b32 | 218 | |
60f85019 SS |
219 | cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE; |
220 | cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE; | |
221 | if (lba48) { | |
222 | cmd.valid.out.hob = IDE_VALID_OUT_HOB; | |
223 | cmd.valid.in.hob = IDE_VALID_IN_HOB; | |
224 | cmd.tf_flags = IDE_TFLAG_LBA48; | |
225 | } | |
22aa4b32 BZ |
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)) |
745483f1 | 231 | addr = ide_get_lba_addr(&cmd, 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 | 252 | if (lba48) { |
745483f1 SS |
253 | cmd.hob.lbal = (addr_req >>= 8) & 0xff; |
254 | cmd.hob.lbam = (addr_req >>= 8) & 0xff; | |
255 | cmd.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 | 262 | |
60f85019 SS |
263 | cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE; |
264 | cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE; | |
265 | if (lba48) { | |
266 | cmd.valid.out.hob = IDE_VALID_OUT_HOB; | |
267 | cmd.valid.in.hob = IDE_VALID_IN_HOB; | |
268 | cmd.tf_flags = IDE_TFLAG_LBA48; | |
269 | } | |
22aa4b32 BZ |
270 | |
271 | ide_no_data_taskfile(drive, &cmd); | |
272 | ||
1da177e4 | 273 | /* if OK, compute maximum address value */ |
47ab8348 | 274 | if (!(tf->status & ATA_ERR)) |
745483f1 | 275 | addr_set = ide_get_lba_addr(&cmd, 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 | ||
e957b60d | 298 | static u64 ide_disk_hpa_get_native_capacity(ide_drive_t *drive, int lba48) |
1da177e4 | 299 | { |
e957b60d | 300 | u64 capacity, set_max; |
1da177e4 LT |
301 | |
302 | capacity = drive->capacity64; | |
e957b60d | 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 | ||
e957b60d BZ |
314 | return set_max; |
315 | } | |
316 | ||
317 | static u64 ide_disk_hpa_set_capacity(ide_drive_t *drive, u64 set_max, int lba48) | |
318 | { | |
319 | set_max = idedisk_set_max_address(drive, set_max, lba48); | |
320 | if (set_max) | |
321 | drive->capacity64 = set_max; | |
322 | ||
323 | return set_max; | |
324 | } | |
325 | ||
326 | static void idedisk_check_hpa(ide_drive_t *drive) | |
327 | { | |
328 | u64 capacity, set_max; | |
329 | int lba48 = ata_id_lba48_enabled(drive->id); | |
330 | ||
331 | capacity = drive->capacity64; | |
332 | set_max = ide_disk_hpa_get_native_capacity(drive, lba48); | |
333 | ||
1da177e4 LT |
334 | if (set_max <= capacity) |
335 | return; | |
336 | ||
e957b60d BZ |
337 | drive->probed_capacity = set_max; |
338 | ||
1da177e4 LT |
339 | printk(KERN_INFO "%s: Host Protected Area detected.\n" |
340 | "\tcurrent capacity is %llu sectors (%llu MB)\n" | |
341 | "\tnative capacity is %llu sectors (%llu MB)\n", | |
342 | drive->name, | |
343 | capacity, sectors_to_MB(capacity), | |
344 | set_max, sectors_to_MB(set_max)); | |
345 | ||
075affcb BZ |
346 | if ((drive->dev_flags & IDE_DFLAG_NOHPA) == 0) |
347 | return; | |
7a3b7512 | 348 | |
e957b60d BZ |
349 | set_max = ide_disk_hpa_set_capacity(drive, set_max, lba48); |
350 | if (set_max) | |
1da177e4 LT |
351 | printk(KERN_INFO "%s: Host Protected Area disabled.\n", |
352 | drive->name); | |
1da177e4 LT |
353 | } |
354 | ||
806f80a6 | 355 | static int ide_disk_get_capacity(ide_drive_t *drive) |
1da177e4 | 356 | { |
4dde4492 | 357 | u16 *id = drive->id; |
d1d76714 | 358 | int lba; |
1da177e4 | 359 | |
942dcd85 | 360 | if (ata_id_lba48_enabled(id)) { |
1da177e4 | 361 | /* drive speaks 48-bit LBA */ |
d1d76714 | 362 | lba = 1; |
48fb2688 | 363 | drive->capacity64 = ata_id_u64(id, ATA_ID_LBA_CAPACITY_2); |
a02227c9 | 364 | } else if (ata_id_has_lba(id) && ata_id_is_lba_capacity_ok(id)) { |
1da177e4 | 365 | /* drive speaks 28-bit LBA */ |
d1d76714 | 366 | lba = 1; |
48fb2688 | 367 | drive->capacity64 = ata_id_u32(id, ATA_ID_LBA_CAPACITY); |
1da177e4 LT |
368 | } else { |
369 | /* drive speaks boring old 28-bit CHS */ | |
d1d76714 | 370 | lba = 0; |
1da177e4 LT |
371 | drive->capacity64 = drive->cyl * drive->head * drive->sect; |
372 | } | |
d1d76714 | 373 | |
e957b60d BZ |
374 | drive->probed_capacity = drive->capacity64; |
375 | ||
d1d76714 BZ |
376 | if (lba) { |
377 | drive->dev_flags |= IDE_DFLAG_LBA; | |
378 | ||
379 | /* | |
380 | * If this device supports the Host Protected Area feature set, | |
381 | * then we may need to change our opinion about its capacity. | |
382 | */ | |
383 | if (ata_id_hpa_enabled(id)) | |
384 | idedisk_check_hpa(drive); | |
385 | } | |
0a70c7f6 BZ |
386 | |
387 | /* limit drive capacity to 137GB if LBA48 cannot be used */ | |
388 | if ((drive->dev_flags & IDE_DFLAG_LBA48) == 0 && | |
389 | drive->capacity64 > 1ULL << 28) { | |
390 | printk(KERN_WARNING "%s: cannot use LBA48 - full capacity " | |
391 | "%llu sectors (%llu MB)\n", | |
392 | drive->name, (unsigned long long)drive->capacity64, | |
393 | sectors_to_MB(drive->capacity64)); | |
e957b60d | 394 | drive->probed_capacity = drive->capacity64 = 1ULL << 28; |
0a70c7f6 BZ |
395 | } |
396 | ||
397 | if ((drive->hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && | |
398 | (drive->dev_flags & IDE_DFLAG_LBA48)) { | |
399 | if (drive->capacity64 > 1ULL << 28) { | |
400 | printk(KERN_INFO "%s: cannot use LBA48 DMA - PIO mode" | |
401 | " will be used for accessing sectors " | |
402 | "> %u\n", drive->name, 1 << 28); | |
403 | } else | |
404 | drive->dev_flags &= ~IDE_DFLAG_LBA48; | |
405 | } | |
806f80a6 BZ |
406 | |
407 | return 0; | |
1da177e4 LT |
408 | } |
409 | ||
c3e33e04 | 410 | static void ide_disk_unlock_native_capacity(ide_drive_t *drive) |
e957b60d | 411 | { |
e957b60d BZ |
412 | u16 *id = drive->id; |
413 | int lba48 = ata_id_lba48_enabled(id); | |
414 | ||
415 | if ((drive->dev_flags & IDE_DFLAG_LBA) == 0 || | |
416 | ata_id_hpa_enabled(id) == 0) | |
c3e33e04 | 417 | return; |
e957b60d BZ |
418 | |
419 | /* | |
420 | * according to the spec the SET MAX ADDRESS command shall be | |
421 | * immediately preceded by a READ NATIVE MAX ADDRESS command | |
422 | */ | |
c3e33e04 TH |
423 | if (!ide_disk_hpa_get_native_capacity(drive, lba48)) |
424 | return; | |
425 | ||
426 | if (ide_disk_hpa_set_capacity(drive, drive->probed_capacity, lba48)) | |
427 | drive->dev_flags |= IDE_DFLAG_NOHPA; /* disable HPA on resume */ | |
e957b60d BZ |
428 | } |
429 | ||
afc23068 | 430 | static int idedisk_prep_fn(struct request_queue *q, struct request *rq) |
1da177e4 LT |
431 | { |
432 | ide_drive_t *drive = q->queuedata; | |
afc23068 FT |
433 | struct ide_cmd *cmd; |
434 | ||
3a5e02ce | 435 | if (req_op(rq) != REQ_OP_FLUSH) |
afc23068 FT |
436 | return BLKPREP_OK; |
437 | ||
2c8fc867 BP |
438 | if (rq->special) { |
439 | cmd = rq->special; | |
440 | memset(cmd, 0, sizeof(*cmd)); | |
441 | } else { | |
442 | cmd = kzalloc(sizeof(*cmd), GFP_ATOMIC); | |
443 | } | |
1da177e4 | 444 | |
395d8ef5 | 445 | /* FIXME: map struct ide_taskfile on rq->cmd[] */ |
22aa4b32 | 446 | BUG_ON(cmd == NULL); |
395d8ef5 | 447 | |
ff2779b5 | 448 | if (ata_id_flush_ext_enabled(drive->id) && |
1da177e4 | 449 | (drive->capacity64 >= (1UL << 28))) |
22aa4b32 | 450 | cmd->tf.command = ATA_CMD_FLUSH_EXT; |
1da177e4 | 451 | else |
22aa4b32 | 452 | cmd->tf.command = ATA_CMD_FLUSH; |
60f85019 SS |
453 | cmd->valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE; |
454 | cmd->tf_flags = IDE_TFLAG_DYN; | |
0dfb991c | 455 | cmd->protocol = ATA_PROT_NODATA; |
aebf526b CH |
456 | rq->cmd_flags &= ~REQ_OP_MASK; |
457 | rq->cmd_flags |= REQ_OP_DRV_OUT; | |
2f5a8e80 | 458 | ide_req(rq)->type = ATA_PRIV_TASKFILE; |
22aa4b32 | 459 | rq->special = cmd; |
bc146d23 | 460 | cmd->rq = rq; |
afc23068 FT |
461 | |
462 | return BLKPREP_OK; | |
1da177e4 LT |
463 | } |
464 | ||
8185d5aa BZ |
465 | ide_devset_get(multcount, mult_count); |
466 | ||
1da177e4 LT |
467 | /* |
468 | * This is tightly woven into the driver->do_special can not touch. | |
469 | * DON'T do it again until a total personality rewrite is committed. | |
470 | */ | |
471 | static int set_multcount(ide_drive_t *drive, int arg) | |
472 | { | |
dd47087b | 473 | struct request *rq; |
1da177e4 | 474 | |
48fb2688 | 475 | if (arg < 0 || arg > (drive->id[ATA_ID_MAX_MULTSECT] & 0xff)) |
1497943e BZ |
476 | return -EINVAL; |
477 | ||
ca1b96e0 | 478 | if (drive->special_flags & IDE_SFLAG_SET_MULTMODE) |
1da177e4 | 479 | return -EBUSY; |
852738f3 | 480 | |
aebf526b | 481 | rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM); |
2f5a8e80 | 482 | ide_req(rq)->type = ATA_PRIV_TASKFILE; |
852738f3 | 483 | |
1da177e4 | 484 | drive->mult_req = arg; |
ca1b96e0 | 485 | drive->special_flags |= IDE_SFLAG_SET_MULTMODE; |
b7819b92 | 486 | blk_execute_rq(drive->queue, NULL, rq, 0); |
dd47087b | 487 | blk_put_request(rq); |
98416549 | 488 | |
1da177e4 LT |
489 | return (drive->mult_count == arg) ? 0 : -EIO; |
490 | } | |
491 | ||
97100fc8 | 492 | ide_devset_get_flag(nowerr, IDE_DFLAG_NOWERR); |
8185d5aa | 493 | |
1da177e4 LT |
494 | static int set_nowerr(ide_drive_t *drive, int arg) |
495 | { | |
1497943e BZ |
496 | if (arg < 0 || arg > 1) |
497 | return -EINVAL; | |
498 | ||
97100fc8 BZ |
499 | if (arg) |
500 | drive->dev_flags |= IDE_DFLAG_NOWERR; | |
501 | else | |
502 | drive->dev_flags &= ~IDE_DFLAG_NOWERR; | |
503 | ||
1da177e4 | 504 | drive->bad_wstat = arg ? BAD_R_STAT : BAD_W_STAT; |
97100fc8 | 505 | |
1da177e4 LT |
506 | return 0; |
507 | } | |
508 | ||
be3c096e BZ |
509 | static int ide_do_setfeature(ide_drive_t *drive, u8 feature, u8 nsect) |
510 | { | |
22aa4b32 | 511 | struct ide_cmd cmd; |
be3c096e | 512 | |
22aa4b32 BZ |
513 | memset(&cmd, 0, sizeof(cmd)); |
514 | cmd.tf.feature = feature; | |
515 | cmd.tf.nsect = nsect; | |
516 | cmd.tf.command = ATA_CMD_SET_FEATURES; | |
60f85019 SS |
517 | cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE; |
518 | cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE; | |
be3c096e | 519 | |
22aa4b32 | 520 | return ide_no_data_taskfile(drive, &cmd); |
be3c096e BZ |
521 | } |
522 | ||
4913efe4 | 523 | static void update_flush(ide_drive_t *drive) |
3e087b57 | 524 | { |
4dde4492 | 525 | u16 *id = drive->id; |
a98239de | 526 | bool wc = false; |
3e087b57 | 527 | |
97100fc8 | 528 | if (drive->dev_flags & IDE_DFLAG_WCACHE) { |
3e087b57 TH |
529 | unsigned long long capacity; |
530 | int barrier; | |
531 | /* | |
532 | * We must avoid issuing commands a drive does not | |
533 | * understand or we may crash it. We check flush cache | |
534 | * is supported. We also check we have the LBA48 flush | |
535 | * cache if the drive capacity is too large. By this | |
536 | * time we have trimmed the drive capacity if LBA48 is | |
537 | * not available so we don't need to recheck that. | |
538 | */ | |
5fef0e5c | 539 | capacity = ide_gd_capacity(drive); |
97100fc8 BZ |
540 | barrier = ata_id_flush_enabled(id) && |
541 | (drive->dev_flags & IDE_DFLAG_NOFLUSH) == 0 && | |
542 | ((drive->dev_flags & IDE_DFLAG_LBA48) == 0 || | |
543 | capacity <= (1ULL << 28) || | |
ff2779b5 | 544 | ata_id_flush_ext_enabled(id)); |
3e087b57 TH |
545 | |
546 | printk(KERN_INFO "%s: cache flushes %ssupported\n", | |
f7ad836c | 547 | drive->name, barrier ? "" : "not "); |
3e087b57 TH |
548 | |
549 | if (barrier) { | |
a98239de | 550 | wc = true; |
afc23068 | 551 | blk_queue_prep_rq(drive->queue, idedisk_prep_fn); |
3e087b57 | 552 | } |
4913efe4 | 553 | } |
3e087b57 | 554 | |
a98239de | 555 | blk_queue_write_cache(drive->queue, wc, false); |
3e087b57 TH |
556 | } |
557 | ||
97100fc8 | 558 | ide_devset_get_flag(wcache, IDE_DFLAG_WCACHE); |
8185d5aa BZ |
559 | |
560 | static int set_wcache(ide_drive_t *drive, int arg) | |
1da177e4 | 561 | { |
3e087b57 | 562 | int err = 1; |
1da177e4 | 563 | |
1497943e BZ |
564 | if (arg < 0 || arg > 1) |
565 | return -EINVAL; | |
566 | ||
4b58f17d | 567 | if (ata_id_flush_enabled(drive->id)) { |
be3c096e BZ |
568 | err = ide_do_setfeature(drive, |
569 | arg ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF, 0); | |
97100fc8 BZ |
570 | if (err == 0) { |
571 | if (arg) | |
572 | drive->dev_flags |= IDE_DFLAG_WCACHE; | |
573 | else | |
574 | drive->dev_flags &= ~IDE_DFLAG_WCACHE; | |
575 | } | |
3e087b57 | 576 | } |
1da177e4 | 577 | |
4913efe4 | 578 | update_flush(drive); |
1da177e4 | 579 | |
3e087b57 | 580 | return err; |
1da177e4 LT |
581 | } |
582 | ||
98416549 | 583 | static int do_idedisk_flushcache(ide_drive_t *drive) |
1da177e4 | 584 | { |
22aa4b32 | 585 | struct ide_cmd cmd; |
1da177e4 | 586 | |
22aa4b32 | 587 | memset(&cmd, 0, sizeof(cmd)); |
ff2779b5 | 588 | if (ata_id_flush_ext_enabled(drive->id)) |
22aa4b32 | 589 | cmd.tf.command = ATA_CMD_FLUSH_EXT; |
1da177e4 | 590 | else |
22aa4b32 | 591 | cmd.tf.command = ATA_CMD_FLUSH; |
60f85019 SS |
592 | cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE; |
593 | cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE; | |
22aa4b32 BZ |
594 | |
595 | return ide_no_data_taskfile(drive, &cmd); | |
1da177e4 LT |
596 | } |
597 | ||
8185d5aa BZ |
598 | ide_devset_get(acoustic, acoustic); |
599 | ||
98416549 | 600 | static int set_acoustic(ide_drive_t *drive, int arg) |
1da177e4 | 601 | { |
1497943e BZ |
602 | if (arg < 0 || arg > 254) |
603 | return -EINVAL; | |
604 | ||
be3c096e BZ |
605 | ide_do_setfeature(drive, |
606 | arg ? SETFEATURES_AAM_ON : SETFEATURES_AAM_OFF, arg); | |
607 | ||
1da177e4 | 608 | drive->acoustic = arg; |
be3c096e | 609 | |
1da177e4 LT |
610 | return 0; |
611 | } | |
612 | ||
97100fc8 | 613 | ide_devset_get_flag(addressing, IDE_DFLAG_LBA48); |
8185d5aa | 614 | |
1da177e4 LT |
615 | /* |
616 | * drive->addressing: | |
617 | * 0: 28-bit | |
618 | * 1: 48-bit | |
619 | * 2: 48-bit capable doing 28-bit | |
620 | */ | |
aa768773 | 621 | static int set_addressing(ide_drive_t *drive, int arg) |
1da177e4 | 622 | { |
1497943e BZ |
623 | if (arg < 0 || arg > 2) |
624 | return -EINVAL; | |
625 | ||
35c13753 BZ |
626 | if (arg && ((drive->hwif->host_flags & IDE_HFLAG_NO_LBA48) || |
627 | ata_id_lba48_enabled(drive->id) == 0)) | |
98416549 | 628 | return -EIO; |
942dcd85 | 629 | |
35c13753 BZ |
630 | if (arg == 2) |
631 | arg = 0; | |
632 | ||
97100fc8 BZ |
633 | if (arg) |
634 | drive->dev_flags |= IDE_DFLAG_LBA48; | |
635 | else | |
636 | drive->dev_flags &= ~IDE_DFLAG_LBA48; | |
942dcd85 | 637 | |
1da177e4 LT |
638 | return 0; |
639 | } | |
640 | ||
f8790489 BZ |
641 | ide_ext_devset_rw(acoustic, acoustic); |
642 | ide_ext_devset_rw(address, addressing); | |
643 | ide_ext_devset_rw(multcount, multcount); | |
644 | ide_ext_devset_rw(wcache, wcache); | |
92f1f8fd | 645 | |
f8790489 | 646 | ide_ext_devset_rw_sync(nowerr, nowerr); |
92f1f8fd | 647 | |
806f80a6 BZ |
648 | static int ide_disk_check(ide_drive_t *drive, const char *s) |
649 | { | |
650 | return 1; | |
651 | } | |
652 | ||
653 | static void ide_disk_setup(ide_drive_t *drive) | |
1da177e4 | 654 | { |
1e874f44 | 655 | struct ide_disk_obj *idkp = drive->driver_data; |
c77380d4 | 656 | struct request_queue *q = drive->queue; |
238e4f14 | 657 | ide_hwif_t *hwif = drive->hwif; |
4dde4492 BZ |
658 | u16 *id = drive->id; |
659 | char *m = (char *)&id[ATA_ID_PROD]; | |
1da177e4 | 660 | unsigned long long capacity; |
1da177e4 | 661 | |
1e874f44 | 662 | ide_proc_register_driver(drive, idkp->driver); |
1da177e4 | 663 | |
97100fc8 | 664 | if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0) |
1da177e4 LT |
665 | return; |
666 | ||
97100fc8 | 667 | if (drive->dev_flags & IDE_DFLAG_REMOVABLE) { |
1da177e4 | 668 | /* |
98416549 | 669 | * Removable disks (eg. SYQUEST); ignore 'WD' drives |
1da177e4 | 670 | */ |
4dde4492 | 671 | if (m[0] != 'W' || m[1] != 'D') |
97100fc8 | 672 | drive->dev_flags |= IDE_DFLAG_DOORLOCKING; |
1da177e4 LT |
673 | } |
674 | ||
aa768773 | 675 | (void)set_addressing(drive, 1); |
1da177e4 | 676 | |
97100fc8 | 677 | if (drive->dev_flags & IDE_DFLAG_LBA48) { |
1da177e4 LT |
678 | int max_s = 2048; |
679 | ||
680 | if (max_s > hwif->rqsize) | |
681 | max_s = hwif->rqsize; | |
682 | ||
086fa5ff | 683 | blk_queue_max_hw_sectors(q, max_s); |
1da177e4 LT |
684 | } |
685 | ||
98416549 | 686 | printk(KERN_INFO "%s: max request size: %dKiB\n", drive->name, |
3b77f777 | 687 | queue_max_sectors(q) / 2); |
c77380d4 | 688 | |
b277da0a | 689 | if (ata_id_is_ssd(id)) { |
8b904b5b BVA |
690 | blk_queue_flag_set(QUEUE_FLAG_NONROT, q); |
691 | blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, q); | |
b277da0a | 692 | } |
1da177e4 LT |
693 | |
694 | /* calculate drive capacity, and select LBA if possible */ | |
806f80a6 | 695 | ide_disk_get_capacity(drive); |
1da177e4 | 696 | |
1da177e4 LT |
697 | /* |
698 | * if possible, give fdisk access to more of the drive, | |
699 | * by correcting bios_cyls: | |
700 | */ | |
5fef0e5c | 701 | capacity = ide_gd_capacity(drive); |
98416549 | 702 | |
97100fc8 | 703 | if ((drive->dev_flags & IDE_DFLAG_FORCED_GEOM) == 0) { |
942dcd85 | 704 | if (ata_id_lba48_enabled(drive->id)) { |
1da177e4 LT |
705 | /* compatibility */ |
706 | drive->bios_sect = 63; | |
707 | drive->bios_head = 255; | |
708 | } | |
709 | ||
710 | if (drive->bios_sect && drive->bios_head) { | |
711 | unsigned int cap0 = capacity; /* truncate to 32 bits */ | |
712 | unsigned int cylsz, cyl; | |
713 | ||
714 | if (cap0 != capacity) | |
715 | drive->bios_cyl = 65535; | |
716 | else { | |
717 | cylsz = drive->bios_sect * drive->bios_head; | |
718 | cyl = cap0 / cylsz; | |
719 | if (cyl > 65535) | |
720 | cyl = 65535; | |
721 | if (cyl > drive->bios_cyl) | |
722 | drive->bios_cyl = cyl; | |
723 | } | |
724 | } | |
725 | } | |
726 | printk(KERN_INFO "%s: %llu sectors (%llu MB)", | |
727 | drive->name, capacity, sectors_to_MB(capacity)); | |
728 | ||
729 | /* Only print cache size when it was specified */ | |
4dde4492 BZ |
730 | if (id[ATA_ID_BUF_SIZE]) |
731 | printk(KERN_CONT " w/%dKiB Cache", id[ATA_ID_BUF_SIZE] / 2); | |
1da177e4 | 732 | |
3ab7efe8 BZ |
733 | printk(KERN_CONT ", CHS=%d/%d/%d\n", |
734 | drive->bios_cyl, drive->bios_head, drive->bios_sect); | |
1da177e4 | 735 | |
1da177e4 | 736 | /* write cache enabled? */ |
8a089c66 | 737 | if ((id[ATA_ID_CSFO] & 1) || ata_id_wcache_enabled(id)) |
97100fc8 | 738 | drive->dev_flags |= IDE_DFLAG_WCACHE; |
1da177e4 | 739 | |
8185d5aa | 740 | set_wcache(drive, 1); |
ae9f9f07 BZ |
741 | |
742 | if ((drive->dev_flags & IDE_DFLAG_LBA) == 0 && | |
743 | (drive->head == 0 || drive->head > 16)) { | |
744 | printk(KERN_ERR "%s: invalid geometry: %d physical heads?\n", | |
745 | drive->name, drive->head); | |
746 | drive->dev_flags &= ~IDE_DFLAG_ATTACH; | |
747 | } else | |
748 | drive->dev_flags |= IDE_DFLAG_ATTACH; | |
1da177e4 LT |
749 | } |
750 | ||
806f80a6 | 751 | static void ide_disk_flush(ide_drive_t *drive) |
1da177e4 | 752 | { |
97100fc8 BZ |
753 | if (ata_id_flush_enabled(drive->id) == 0 || |
754 | (drive->dev_flags & IDE_DFLAG_WCACHE) == 0) | |
1da177e4 LT |
755 | return; |
756 | ||
757 | if (do_idedisk_flushcache(drive)) | |
758 | printk(KERN_INFO "%s: wcache flush failed!\n", drive->name); | |
759 | } | |
760 | ||
806f80a6 BZ |
761 | static int ide_disk_init_media(ide_drive_t *drive, struct gendisk *disk) |
762 | { | |
763 | return 0; | |
764 | } | |
765 | ||
766 | static int ide_disk_set_doorlock(ide_drive_t *drive, struct gendisk *disk, | |
767 | int on) | |
29ec683f | 768 | { |
22aa4b32 | 769 | struct ide_cmd cmd; |
81ee1bb5 BZ |
770 | int ret; |
771 | ||
772 | if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) == 0) | |
773 | return 0; | |
29ec683f | 774 | |
22aa4b32 BZ |
775 | memset(&cmd, 0, sizeof(cmd)); |
776 | cmd.tf.command = on ? ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK; | |
60f85019 SS |
777 | cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE; |
778 | cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE; | |
29ec683f | 779 | |
22aa4b32 | 780 | ret = ide_no_data_taskfile(drive, &cmd); |
81ee1bb5 BZ |
781 | |
782 | if (ret) | |
783 | drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING; | |
784 | ||
785 | return ret; | |
29ec683f | 786 | } |
806f80a6 BZ |
787 | |
788 | const struct ide_disk_ops ide_ata_disk_ops = { | |
c3e33e04 TH |
789 | .check = ide_disk_check, |
790 | .unlock_native_capacity = ide_disk_unlock_native_capacity, | |
791 | .get_capacity = ide_disk_get_capacity, | |
792 | .setup = ide_disk_setup, | |
793 | .flush = ide_disk_flush, | |
794 | .init_media = ide_disk_init_media, | |
795 | .set_doorlock = ide_disk_set_doorlock, | |
796 | .do_request = ide_do_rw_disk, | |
797 | .ioctl = ide_disk_ioctl, | |
806f80a6 | 798 | }; |