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1da177e4 LT |
1 | /* |
2 | * linux/drivers/ide/ide-disk.c Version 1.18 Mar 05, 2003 | |
3 | * | |
4 | * Copyright (C) 1994-1998 Linus Torvalds & authors (see below) | |
5 | * Copyright (C) 1998-2002 Linux ATA Development | |
6 | * Andre Hedrick <andre@linux-ide.org> | |
7 | * Copyright (C) 2003 Red Hat <alan@redhat.com> | |
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 | ||
18 | #define IDEDISK_VERSION "1.18" | |
19 | ||
1da177e4 LT |
20 | //#define DEBUG |
21 | ||
1da177e4 LT |
22 | #include <linux/module.h> |
23 | #include <linux/types.h> | |
24 | #include <linux/string.h> | |
25 | #include <linux/kernel.h> | |
26 | #include <linux/timer.h> | |
27 | #include <linux/mm.h> | |
28 | #include <linux/interrupt.h> | |
29 | #include <linux/major.h> | |
30 | #include <linux/errno.h> | |
31 | #include <linux/genhd.h> | |
32 | #include <linux/slab.h> | |
33 | #include <linux/delay.h> | |
cf8b8975 | 34 | #include <linux/mutex.h> |
2bfb646c | 35 | #include <linux/leds.h> |
1da177e4 LT |
36 | |
37 | #define _IDE_DISK | |
38 | ||
39 | #include <linux/ide.h> | |
40 | ||
41 | #include <asm/byteorder.h> | |
42 | #include <asm/irq.h> | |
43 | #include <asm/uaccess.h> | |
44 | #include <asm/io.h> | |
45 | #include <asm/div64.h> | |
46 | ||
47 | struct ide_disk_obj { | |
48 | ide_drive_t *drive; | |
49 | ide_driver_t *driver; | |
50 | struct gendisk *disk; | |
51 | struct kref kref; | |
c94964a4 | 52 | unsigned int openers; /* protected by BKL for now */ |
1da177e4 LT |
53 | }; |
54 | ||
cf8b8975 | 55 | static DEFINE_MUTEX(idedisk_ref_mutex); |
1da177e4 LT |
56 | |
57 | #define to_ide_disk(obj) container_of(obj, struct ide_disk_obj, kref) | |
58 | ||
59 | #define ide_disk_g(disk) \ | |
60 | container_of((disk)->private_data, struct ide_disk_obj, driver) | |
61 | ||
62 | static struct ide_disk_obj *ide_disk_get(struct gendisk *disk) | |
63 | { | |
64 | struct ide_disk_obj *idkp = NULL; | |
65 | ||
cf8b8975 | 66 | mutex_lock(&idedisk_ref_mutex); |
1da177e4 LT |
67 | idkp = ide_disk_g(disk); |
68 | if (idkp) | |
69 | kref_get(&idkp->kref); | |
cf8b8975 | 70 | mutex_unlock(&idedisk_ref_mutex); |
1da177e4 LT |
71 | return idkp; |
72 | } | |
73 | ||
74 | static void ide_disk_release(struct kref *); | |
75 | ||
76 | static void ide_disk_put(struct ide_disk_obj *idkp) | |
77 | { | |
cf8b8975 | 78 | mutex_lock(&idedisk_ref_mutex); |
1da177e4 | 79 | kref_put(&idkp->kref, ide_disk_release); |
cf8b8975 | 80 | mutex_unlock(&idedisk_ref_mutex); |
1da177e4 LT |
81 | } |
82 | ||
83 | /* | |
84 | * lba_capacity_is_ok() performs a sanity check on the claimed "lba_capacity" | |
85 | * value for this drive (from its reported identification information). | |
86 | * | |
87 | * Returns: 1 if lba_capacity looks sensible | |
88 | * 0 otherwise | |
89 | * | |
90 | * It is called only once for each drive. | |
91 | */ | |
92 | static int lba_capacity_is_ok (struct hd_driveid *id) | |
93 | { | |
94 | unsigned long lba_sects, chs_sects, head, tail; | |
95 | ||
6efd9360 AC |
96 | /* No non-LBA info .. so valid! */ |
97 | if (id->cyls == 0) | |
98 | return 1; | |
99 | ||
1da177e4 LT |
100 | /* |
101 | * The ATA spec tells large drives to return | |
102 | * C/H/S = 16383/16/63 independent of their size. | |
103 | * Some drives can be jumpered to use 15 heads instead of 16. | |
104 | * Some drives can be jumpered to use 4092 cyls instead of 16383. | |
105 | */ | |
106 | if ((id->cyls == 16383 | |
107 | || (id->cyls == 4092 && id->cur_cyls == 16383)) && | |
108 | id->sectors == 63 && | |
109 | (id->heads == 15 || id->heads == 16) && | |
110 | (id->lba_capacity >= 16383*63*id->heads)) | |
111 | return 1; | |
112 | ||
113 | lba_sects = id->lba_capacity; | |
114 | chs_sects = id->cyls * id->heads * id->sectors; | |
115 | ||
116 | /* perform a rough sanity check on lba_sects: within 10% is OK */ | |
117 | if ((lba_sects - chs_sects) < chs_sects/10) | |
118 | return 1; | |
119 | ||
120 | /* some drives have the word order reversed */ | |
121 | head = ((lba_sects >> 16) & 0xffff); | |
122 | tail = (lba_sects & 0xffff); | |
123 | lba_sects = (head | (tail << 16)); | |
124 | if ((lba_sects - chs_sects) < chs_sects/10) { | |
125 | id->lba_capacity = lba_sects; | |
126 | return 1; /* lba_capacity is (now) good */ | |
127 | } | |
128 | ||
129 | return 0; /* lba_capacity value may be bad */ | |
130 | } | |
131 | ||
132 | /* | |
133 | * __ide_do_rw_disk() issues READ and WRITE commands to a disk, | |
134 | * using LBA if supported, or CHS otherwise, to address sectors. | |
135 | */ | |
136 | static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq, sector_t block) | |
137 | { | |
138 | ide_hwif_t *hwif = HWIF(drive); | |
139 | unsigned int dma = drive->using_dma; | |
790d1239 | 140 | u16 nsectors = (u16)rq->nr_sectors; |
1da177e4 | 141 | u8 lba48 = (drive->addressing == 1) ? 1 : 0; |
cd2a2d96 | 142 | u8 command = WIN_NOP; |
9e42237f BZ |
143 | ide_task_t task; |
144 | struct ide_taskfile *tf = &task.tf; | |
1da177e4 | 145 | |
238e4f14 | 146 | if ((hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && lba48 && dma) { |
1da177e4 LT |
147 | if (block + rq->nr_sectors > 1ULL << 28) |
148 | dma = 0; | |
149 | else | |
150 | lba48 = 0; | |
151 | } | |
152 | ||
153 | if (!dma) { | |
154 | ide_init_sg_cmd(drive, rq); | |
155 | ide_map_sg(drive, rq); | |
156 | } | |
157 | ||
9e42237f BZ |
158 | memset(&task, 0, sizeof(task)); |
159 | task.tf_flags = IDE_TFLAG_NO_SELECT_MASK; /* FIXME? */ | |
807e35d6 | 160 | task.tf_flags |= (IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE); |
2bd06b23 | 161 | |
1da177e4 LT |
162 | if (drive->select.b.lba) { |
163 | if (lba48) { | |
c2f8311d MR |
164 | pr_debug("%s: LBA=0x%012llx\n", drive->name, |
165 | (unsigned long long)block); | |
1da177e4 | 166 | |
790d1239 | 167 | tf->hob_nsect = (nsectors >> 8) & 0xff; |
2bd06b23 BZ |
168 | tf->hob_lbal = (u8)(block >> 24); |
169 | if (sizeof(block) != 4) { | |
170 | tf->hob_lbam = (u8)((u64)block >> 32); | |
171 | tf->hob_lbah = (u8)((u64)block >> 40); | |
1da177e4 | 172 | } |
2bd06b23 | 173 | |
790d1239 | 174 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
175 | tf->lbal = (u8) block; |
176 | tf->lbam = (u8)(block >> 8); | |
177 | tf->lbah = (u8)(block >> 16); | |
1da177e4 LT |
178 | #ifdef DEBUG |
179 | printk("%s: 0x%02x%02x 0x%02x%02x%02x%02x%02x%02x\n", | |
2bd06b23 BZ |
180 | drive->name, tf->hob_nsect, tf->nsect, |
181 | tf->hob_lbah, tf->hob_lbam, tf->hob_lbal, | |
182 | tf->lbah, tf->lbam, tf->lbal); | |
1da177e4 | 183 | #endif |
74095a91 | 184 | task.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_OUT_HOB); |
1da177e4 | 185 | } else { |
790d1239 | 186 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
187 | tf->lbal = block; |
188 | tf->lbam = block >>= 8; | |
189 | tf->lbah = block >>= 8; | |
190 | tf->device = (block >> 8) & 0xf; | |
1da177e4 LT |
191 | } |
192 | } else { | |
193 | unsigned int sect,head,cyl,track; | |
194 | track = (int)block / drive->sect; | |
195 | sect = (int)block % drive->sect + 1; | |
1da177e4 LT |
196 | head = track % drive->head; |
197 | cyl = track / drive->head; | |
198 | ||
199 | pr_debug("%s: CHS=%u/%u/%u\n", drive->name, cyl, head, sect); | |
200 | ||
790d1239 | 201 | tf->nsect = nsectors & 0xff; |
2bd06b23 BZ |
202 | tf->lbal = sect; |
203 | tf->lbam = cyl; | |
204 | tf->lbah = cyl >> 8; | |
205 | tf->device = head; | |
1da177e4 LT |
206 | } |
207 | ||
9e42237f | 208 | ide_tf_load(drive, &task); |
2bd06b23 | 209 | |
1da177e4 LT |
210 | if (dma) { |
211 | if (!hwif->dma_setup(drive)) { | |
212 | if (rq_data_dir(rq)) { | |
213 | command = lba48 ? WIN_WRITEDMA_EXT : WIN_WRITEDMA; | |
214 | if (drive->vdma) | |
215 | command = lba48 ? WIN_WRITE_EXT: WIN_WRITE; | |
216 | } else { | |
217 | command = lba48 ? WIN_READDMA_EXT : WIN_READDMA; | |
218 | if (drive->vdma) | |
219 | command = lba48 ? WIN_READ_EXT: WIN_READ; | |
220 | } | |
221 | hwif->dma_exec_cmd(drive, command); | |
222 | hwif->dma_start(drive); | |
223 | return ide_started; | |
224 | } | |
225 | /* fallback to PIO */ | |
226 | ide_init_sg_cmd(drive, rq); | |
227 | } | |
228 | ||
229 | if (rq_data_dir(rq) == READ) { | |
230 | ||
231 | if (drive->mult_count) { | |
232 | hwif->data_phase = TASKFILE_MULTI_IN; | |
233 | command = lba48 ? WIN_MULTREAD_EXT : WIN_MULTREAD; | |
234 | } else { | |
235 | hwif->data_phase = TASKFILE_IN; | |
236 | command = lba48 ? WIN_READ_EXT : WIN_READ; | |
237 | } | |
238 | ||
c52ea915 BZ |
239 | ide_execute_command(drive, command, &task_in_intr, |
240 | WAIT_WORSTCASE, NULL); | |
1da177e4 LT |
241 | return ide_started; |
242 | } else { | |
243 | if (drive->mult_count) { | |
244 | hwif->data_phase = TASKFILE_MULTI_OUT; | |
245 | command = lba48 ? WIN_MULTWRITE_EXT : WIN_MULTWRITE; | |
246 | } else { | |
247 | hwif->data_phase = TASKFILE_OUT; | |
248 | command = lba48 ? WIN_WRITE_EXT : WIN_WRITE; | |
249 | } | |
250 | ||
cf77249e | 251 | hwif->OUTBSYNC(drive, command, IDE_COMMAND_REG); |
a7bbd20b | 252 | ndelay(400); /* FIXME */ |
1da177e4 LT |
253 | |
254 | return pre_task_out_intr(drive, rq); | |
255 | } | |
256 | } | |
257 | ||
258 | /* | |
259 | * 268435455 == 137439 MB or 28bit limit | |
260 | * 320173056 == 163929 MB or 48bit addressing | |
261 | * 1073741822 == 549756 MB or 48bit addressing fake drive | |
262 | */ | |
263 | ||
264 | static ide_startstop_t ide_do_rw_disk (ide_drive_t *drive, struct request *rq, sector_t block) | |
265 | { | |
266 | ide_hwif_t *hwif = HWIF(drive); | |
267 | ||
268 | BUG_ON(drive->blocked); | |
269 | ||
270 | if (!blk_fs_request(rq)) { | |
271 | blk_dump_rq_flags(rq, "ide_do_rw_disk - bad command"); | |
272 | ide_end_request(drive, 0, 0); | |
273 | return ide_stopped; | |
274 | } | |
275 | ||
2bfb646c RP |
276 | ledtrig_ide_activity(); |
277 | ||
1da177e4 LT |
278 | pr_debug("%s: %sing: block=%llu, sectors=%lu, buffer=0x%08lx\n", |
279 | drive->name, rq_data_dir(rq) == READ ? "read" : "writ", | |
c2f8311d MR |
280 | (unsigned long long)block, rq->nr_sectors, |
281 | (unsigned long)rq->buffer); | |
1da177e4 LT |
282 | |
283 | if (hwif->rw_disk) | |
284 | hwif->rw_disk(drive, rq); | |
285 | ||
286 | return __ide_do_rw_disk(drive, rq, block); | |
287 | } | |
288 | ||
289 | /* | |
290 | * Queries for true maximum capacity of the drive. | |
291 | * Returns maximum LBA address (> 0) of the drive, 0 if failed. | |
292 | */ | |
7a3b7512 | 293 | static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48) |
1da177e4 LT |
294 | { |
295 | ide_task_t args; | |
650d841d | 296 | struct ide_taskfile *tf = &args.tf; |
7a3b7512 | 297 | u64 addr = 0; |
1da177e4 LT |
298 | |
299 | /* Create IDE/ATA command request structure */ | |
300 | memset(&args, 0, sizeof(ide_task_t)); | |
7a3b7512 BZ |
301 | if (lba48) |
302 | tf->command = WIN_READ_NATIVE_MAX_EXT; | |
303 | else | |
304 | tf->command = WIN_READ_NATIVE_MAX; | |
650d841d | 305 | tf->device = ATA_LBA; |
a3bbb9d8 BZ |
306 | args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE; |
307 | if (lba48) | |
308 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_OUT_HOB); | |
1da177e4 | 309 | /* submit command request */ |
9a3c49be | 310 | ide_no_data_taskfile(drive, &args); |
1da177e4 | 311 | |
1da177e4 | 312 | /* if OK, compute maximum address value */ |
650d841d BZ |
313 | if ((tf->status & 0x01) == 0) { |
314 | u32 high, low; | |
315 | ||
7a3b7512 BZ |
316 | if (lba48) |
317 | high = (tf->hob_lbah << 16) | (tf->hob_lbam << 8) | | |
318 | tf->hob_lbal; | |
319 | else | |
320 | high = tf->device & 0xf; | |
650d841d | 321 | low = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal; |
1da177e4 LT |
322 | addr = ((__u64)high << 24) | low; |
323 | addr++; /* since the return value is (maxlba - 1), we add 1 */ | |
324 | } | |
325 | return addr; | |
326 | } | |
327 | ||
328 | /* | |
329 | * Sets maximum virtual LBA address of the drive. | |
330 | * Returns new maximum virtual LBA address (> 0) or 0 on failure. | |
331 | */ | |
7a3b7512 | 332 | static u64 idedisk_set_max_address(ide_drive_t *drive, u64 addr_req, int lba48) |
1da177e4 LT |
333 | { |
334 | ide_task_t args; | |
650d841d | 335 | struct ide_taskfile *tf = &args.tf; |
7a3b7512 | 336 | u64 addr_set = 0; |
1da177e4 LT |
337 | |
338 | addr_req--; | |
339 | /* Create IDE/ATA command request structure */ | |
340 | memset(&args, 0, sizeof(ide_task_t)); | |
650d841d BZ |
341 | tf->lbal = (addr_req >> 0) & 0xff; |
342 | tf->lbam = (addr_req >>= 8) & 0xff; | |
343 | tf->lbah = (addr_req >>= 8) & 0xff; | |
7a3b7512 BZ |
344 | if (lba48) { |
345 | tf->hob_lbal = (addr_req >>= 8) & 0xff; | |
346 | tf->hob_lbam = (addr_req >>= 8) & 0xff; | |
347 | tf->hob_lbah = (addr_req >>= 8) & 0xff; | |
348 | tf->command = WIN_SET_MAX_EXT; | |
349 | } else { | |
350 | tf->device = (addr_req >>= 8) & 0x0f; | |
351 | tf->command = WIN_SET_MAX; | |
352 | } | |
353 | tf->device |= ATA_LBA; | |
a3bbb9d8 BZ |
354 | args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE; |
355 | if (lba48) | |
356 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_OUT_HOB); | |
1da177e4 | 357 | /* submit command request */ |
9a3c49be | 358 | ide_no_data_taskfile(drive, &args); |
1da177e4 | 359 | /* if OK, compute maximum address value */ |
650d841d BZ |
360 | if ((tf->status & 0x01) == 0) { |
361 | u32 high, low; | |
362 | ||
7a3b7512 BZ |
363 | if (lba48) |
364 | high = (tf->hob_lbah << 16) | (tf->hob_lbam << 8) | | |
365 | tf->hob_lbal; | |
366 | else | |
367 | high = tf->device & 0xf; | |
650d841d | 368 | low = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal; |
1da177e4 LT |
369 | addr_set = ((__u64)high << 24) | low; |
370 | addr_set++; | |
371 | } | |
372 | return addr_set; | |
373 | } | |
374 | ||
375 | static unsigned long long sectors_to_MB(unsigned long long n) | |
376 | { | |
377 | n <<= 9; /* make it bytes */ | |
378 | do_div(n, 1000000); /* make it MB */ | |
379 | return n; | |
380 | } | |
381 | ||
382 | /* | |
383 | * Bits 10 of command_set_1 and cfs_enable_1 must be equal, | |
384 | * so on non-buggy drives we need test only one. | |
385 | * However, we should also check whether these fields are valid. | |
386 | */ | |
387 | static inline int idedisk_supports_hpa(const struct hd_driveid *id) | |
388 | { | |
389 | return (id->command_set_1 & 0x0400) && (id->cfs_enable_1 & 0x0400); | |
390 | } | |
391 | ||
392 | /* | |
393 | * The same here. | |
394 | */ | |
395 | static inline int idedisk_supports_lba48(const struct hd_driveid *id) | |
396 | { | |
397 | return (id->command_set_2 & 0x0400) && (id->cfs_enable_2 & 0x0400) | |
398 | && id->lba_capacity_2; | |
399 | } | |
400 | ||
b0244a00 BZ |
401 | /* |
402 | * Some disks report total number of sectors instead of | |
403 | * maximum sector address. We list them here. | |
404 | */ | |
405 | static const struct drive_list_entry hpa_list[] = { | |
406 | { "ST340823A", NULL }, | |
7062cdc5 | 407 | { "ST320413A", NULL }, |
b0244a00 BZ |
408 | { NULL, NULL } |
409 | }; | |
410 | ||
858119e1 | 411 | static void idedisk_check_hpa(ide_drive_t *drive) |
1da177e4 LT |
412 | { |
413 | unsigned long long capacity, set_max; | |
414 | int lba48 = idedisk_supports_lba48(drive->id); | |
415 | ||
416 | capacity = drive->capacity64; | |
7a3b7512 BZ |
417 | |
418 | set_max = idedisk_read_native_max_address(drive, lba48); | |
1da177e4 | 419 | |
b0244a00 BZ |
420 | if (ide_in_drive_list(drive->id, hpa_list)) { |
421 | /* | |
422 | * Since we are inclusive wrt to firmware revisions do this | |
423 | * extra check and apply the workaround only when needed. | |
424 | */ | |
425 | if (set_max == capacity + 1) | |
426 | set_max--; | |
427 | } | |
428 | ||
1da177e4 LT |
429 | if (set_max <= capacity) |
430 | return; | |
431 | ||
432 | printk(KERN_INFO "%s: Host Protected Area detected.\n" | |
433 | "\tcurrent capacity is %llu sectors (%llu MB)\n" | |
434 | "\tnative capacity is %llu sectors (%llu MB)\n", | |
435 | drive->name, | |
436 | capacity, sectors_to_MB(capacity), | |
437 | set_max, sectors_to_MB(set_max)); | |
438 | ||
7a3b7512 BZ |
439 | set_max = idedisk_set_max_address(drive, set_max, lba48); |
440 | ||
1da177e4 LT |
441 | if (set_max) { |
442 | drive->capacity64 = set_max; | |
443 | printk(KERN_INFO "%s: Host Protected Area disabled.\n", | |
444 | drive->name); | |
445 | } | |
446 | } | |
447 | ||
448 | /* | |
449 | * Compute drive->capacity, the full capacity of the drive | |
450 | * Called with drive->id != NULL. | |
451 | * | |
452 | * To compute capacity, this uses either of | |
453 | * | |
454 | * 1. CHS value set by user (whatever user sets will be trusted) | |
455 | * 2. LBA value from target drive (require new ATA feature) | |
456 | * 3. LBA value from system BIOS (new one is OK, old one may break) | |
457 | * 4. CHS value from system BIOS (traditional style) | |
458 | * | |
459 | * in above order (i.e., if value of higher priority is available, | |
460 | * reset will be ignored). | |
461 | */ | |
462 | static void init_idedisk_capacity (ide_drive_t *drive) | |
463 | { | |
464 | struct hd_driveid *id = drive->id; | |
465 | /* | |
466 | * If this drive supports the Host Protected Area feature set, | |
467 | * then we may need to change our opinion about the drive's capacity. | |
468 | */ | |
469 | int hpa = idedisk_supports_hpa(id); | |
470 | ||
471 | if (idedisk_supports_lba48(id)) { | |
472 | /* drive speaks 48-bit LBA */ | |
473 | drive->select.b.lba = 1; | |
474 | drive->capacity64 = id->lba_capacity_2; | |
475 | if (hpa) | |
476 | idedisk_check_hpa(drive); | |
477 | } else if ((id->capability & 2) && lba_capacity_is_ok(id)) { | |
478 | /* drive speaks 28-bit LBA */ | |
479 | drive->select.b.lba = 1; | |
480 | drive->capacity64 = id->lba_capacity; | |
481 | if (hpa) | |
482 | idedisk_check_hpa(drive); | |
483 | } else { | |
484 | /* drive speaks boring old 28-bit CHS */ | |
485 | drive->capacity64 = drive->cyl * drive->head * drive->sect; | |
486 | } | |
487 | } | |
488 | ||
489 | static sector_t idedisk_capacity (ide_drive_t *drive) | |
490 | { | |
491 | return drive->capacity64 - drive->sect0; | |
492 | } | |
493 | ||
ecfd80e4 | 494 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
495 | static int smart_enable(ide_drive_t *drive) |
496 | { | |
497 | ide_task_t args; | |
650d841d | 498 | struct ide_taskfile *tf = &args.tf; |
1da177e4 LT |
499 | |
500 | memset(&args, 0, sizeof(ide_task_t)); | |
650d841d BZ |
501 | tf->feature = SMART_ENABLE; |
502 | tf->lbam = SMART_LCYL_PASS; | |
503 | tf->lbah = SMART_HCYL_PASS; | |
504 | tf->command = WIN_SMART; | |
a3bbb9d8 | 505 | args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE; |
9a3c49be | 506 | return ide_no_data_taskfile(drive, &args); |
1da177e4 LT |
507 | } |
508 | ||
43e7c0c4 | 509 | static int get_smart_data(ide_drive_t *drive, u8 *buf, u8 sub_cmd) |
1da177e4 LT |
510 | { |
511 | ide_task_t args; | |
650d841d | 512 | struct ide_taskfile *tf = &args.tf; |
1da177e4 LT |
513 | |
514 | memset(&args, 0, sizeof(ide_task_t)); | |
650d841d BZ |
515 | tf->feature = sub_cmd; |
516 | tf->nsect = 0x01; | |
517 | tf->lbam = SMART_LCYL_PASS; | |
518 | tf->lbah = SMART_HCYL_PASS; | |
519 | tf->command = WIN_SMART; | |
ac026ff2 BZ |
520 | args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE; |
521 | args.data_phase = TASKFILE_IN; | |
1da177e4 | 522 | (void) smart_enable(drive); |
ac026ff2 | 523 | return ide_raw_taskfile(drive, &args, buf, 1); |
1da177e4 LT |
524 | } |
525 | ||
526 | static int proc_idedisk_read_cache | |
527 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
528 | { | |
529 | ide_drive_t *drive = (ide_drive_t *) data; | |
530 | char *out = page; | |
531 | int len; | |
532 | ||
533 | if (drive->id_read) | |
534 | len = sprintf(out,"%i\n", drive->id->buf_size / 2); | |
535 | else | |
536 | len = sprintf(out,"(none)\n"); | |
537 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
538 | } | |
539 | ||
540 | static int proc_idedisk_read_capacity | |
541 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
542 | { | |
543 | ide_drive_t*drive = (ide_drive_t *)data; | |
544 | int len; | |
545 | ||
546 | len = sprintf(page,"%llu\n", (long long)idedisk_capacity(drive)); | |
547 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
548 | } | |
549 | ||
550 | static int proc_idedisk_read_smart_thresholds | |
551 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
552 | { | |
553 | ide_drive_t *drive = (ide_drive_t *)data; | |
554 | int len = 0, i = 0; | |
555 | ||
43e7c0c4 | 556 | if (get_smart_data(drive, page, SMART_READ_THRESHOLDS) == 0) { |
1da177e4 LT |
557 | unsigned short *val = (unsigned short *) page; |
558 | char *out = ((char *)val) + (SECTOR_WORDS * 4); | |
559 | page = out; | |
560 | do { | |
561 | out += sprintf(out, "%04x%c", le16_to_cpu(*val), (++i & 7) ? ' ' : '\n'); | |
562 | val += 1; | |
563 | } while (i < (SECTOR_WORDS * 2)); | |
564 | len = out - page; | |
565 | } | |
566 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
567 | } | |
568 | ||
569 | static int proc_idedisk_read_smart_values | |
570 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
571 | { | |
572 | ide_drive_t *drive = (ide_drive_t *)data; | |
573 | int len = 0, i = 0; | |
574 | ||
43e7c0c4 | 575 | if (get_smart_data(drive, page, SMART_READ_VALUES) == 0) { |
1da177e4 LT |
576 | unsigned short *val = (unsigned short *) page; |
577 | char *out = ((char *)val) + (SECTOR_WORDS * 4); | |
578 | page = out; | |
579 | do { | |
580 | out += sprintf(out, "%04x%c", le16_to_cpu(*val), (++i & 7) ? ' ' : '\n'); | |
581 | val += 1; | |
582 | } while (i < (SECTOR_WORDS * 2)); | |
583 | len = out - page; | |
584 | } | |
585 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
586 | } | |
587 | ||
588 | static ide_proc_entry_t idedisk_proc[] = { | |
589 | { "cache", S_IFREG|S_IRUGO, proc_idedisk_read_cache, NULL }, | |
590 | { "capacity", S_IFREG|S_IRUGO, proc_idedisk_read_capacity, NULL }, | |
591 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, | |
592 | { "smart_values", S_IFREG|S_IRUSR, proc_idedisk_read_smart_values, NULL }, | |
593 | { "smart_thresholds", S_IFREG|S_IRUSR, proc_idedisk_read_smart_thresholds, NULL }, | |
594 | { NULL, 0, NULL, NULL } | |
595 | }; | |
ecfd80e4 | 596 | #endif /* CONFIG_IDE_PROC_FS */ |
1da177e4 | 597 | |
165125e1 | 598 | static void idedisk_prepare_flush(struct request_queue *q, struct request *rq) |
1da177e4 LT |
599 | { |
600 | ide_drive_t *drive = q->queuedata; | |
813a0eb2 | 601 | ide_task_t task; |
1da177e4 | 602 | |
813a0eb2 | 603 | memset(&task, 0, sizeof(task)); |
1da177e4 LT |
604 | if (ide_id_has_flush_cache_ext(drive->id) && |
605 | (drive->capacity64 >= (1UL << 28))) | |
813a0eb2 | 606 | task.tf.command = WIN_FLUSH_CACHE_EXT; |
1da177e4 | 607 | else |
813a0eb2 | 608 | task.tf.command = WIN_FLUSH_CACHE; |
ac026ff2 BZ |
609 | task.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE; |
610 | task.data_phase = TASKFILE_NO_DATA; | |
1da177e4 | 611 | |
813a0eb2 | 612 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; |
4aff5e23 | 613 | rq->cmd_flags |= REQ_SOFTBARRIER; |
813a0eb2 | 614 | rq->special = &task; |
1da177e4 LT |
615 | } |
616 | ||
1da177e4 LT |
617 | /* |
618 | * This is tightly woven into the driver->do_special can not touch. | |
619 | * DON'T do it again until a total personality rewrite is committed. | |
620 | */ | |
621 | static int set_multcount(ide_drive_t *drive, int arg) | |
622 | { | |
623 | struct request rq; | |
624 | ||
1497943e BZ |
625 | if (arg < 0 || arg > drive->id->max_multsect) |
626 | return -EINVAL; | |
627 | ||
1da177e4 LT |
628 | if (drive->special.b.set_multmode) |
629 | return -EBUSY; | |
630 | ide_init_drive_cmd (&rq); | |
4aff5e23 | 631 | rq.cmd_type = REQ_TYPE_ATA_CMD; |
1da177e4 LT |
632 | drive->mult_req = arg; |
633 | drive->special.b.set_multmode = 1; | |
634 | (void) ide_do_drive_cmd (drive, &rq, ide_wait); | |
635 | return (drive->mult_count == arg) ? 0 : -EIO; | |
636 | } | |
637 | ||
638 | static int set_nowerr(ide_drive_t *drive, int arg) | |
639 | { | |
1497943e BZ |
640 | if (arg < 0 || arg > 1) |
641 | return -EINVAL; | |
642 | ||
1da177e4 LT |
643 | if (ide_spin_wait_hwgroup(drive)) |
644 | return -EBUSY; | |
645 | drive->nowerr = arg; | |
646 | drive->bad_wstat = arg ? BAD_R_STAT : BAD_W_STAT; | |
647 | spin_unlock_irq(&ide_lock); | |
648 | return 0; | |
649 | } | |
650 | ||
3e087b57 TH |
651 | static void update_ordered(ide_drive_t *drive) |
652 | { | |
653 | struct hd_driveid *id = drive->id; | |
654 | unsigned ordered = QUEUE_ORDERED_NONE; | |
655 | prepare_flush_fn *prep_fn = NULL; | |
3e087b57 TH |
656 | |
657 | if (drive->wcache) { | |
658 | unsigned long long capacity; | |
659 | int barrier; | |
660 | /* | |
661 | * We must avoid issuing commands a drive does not | |
662 | * understand or we may crash it. We check flush cache | |
663 | * is supported. We also check we have the LBA48 flush | |
664 | * cache if the drive capacity is too large. By this | |
665 | * time we have trimmed the drive capacity if LBA48 is | |
666 | * not available so we don't need to recheck that. | |
667 | */ | |
668 | capacity = idedisk_capacity(drive); | |
36193484 | 669 | barrier = ide_id_has_flush_cache(id) && !drive->noflush && |
3e087b57 TH |
670 | (drive->addressing == 0 || capacity <= (1ULL << 28) || |
671 | ide_id_has_flush_cache_ext(id)); | |
672 | ||
673 | printk(KERN_INFO "%s: cache flushes %ssupported\n", | |
f7ad836c | 674 | drive->name, barrier ? "" : "not "); |
3e087b57 TH |
675 | |
676 | if (barrier) { | |
677 | ordered = QUEUE_ORDERED_DRAIN_FLUSH; | |
678 | prep_fn = idedisk_prepare_flush; | |
3e087b57 TH |
679 | } |
680 | } else | |
681 | ordered = QUEUE_ORDERED_DRAIN; | |
682 | ||
683 | blk_queue_ordered(drive->queue, ordered, prep_fn); | |
3e087b57 TH |
684 | } |
685 | ||
1da177e4 LT |
686 | static int write_cache(ide_drive_t *drive, int arg) |
687 | { | |
688 | ide_task_t args; | |
3e087b57 | 689 | int err = 1; |
1da177e4 | 690 | |
1497943e BZ |
691 | if (arg < 0 || arg > 1) |
692 | return -EINVAL; | |
693 | ||
3e087b57 TH |
694 | if (ide_id_has_flush_cache(drive->id)) { |
695 | memset(&args, 0, sizeof(ide_task_t)); | |
650d841d | 696 | args.tf.feature = arg ? |
1da177e4 | 697 | SETFEATURES_EN_WCACHE : SETFEATURES_DIS_WCACHE; |
650d841d | 698 | args.tf.command = WIN_SETFEATURES; |
a3bbb9d8 | 699 | args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE; |
9a3c49be | 700 | err = ide_no_data_taskfile(drive, &args); |
3e087b57 TH |
701 | if (err == 0) |
702 | drive->wcache = arg; | |
703 | } | |
1da177e4 | 704 | |
3e087b57 | 705 | update_ordered(drive); |
1da177e4 | 706 | |
3e087b57 | 707 | return err; |
1da177e4 LT |
708 | } |
709 | ||
710 | static int do_idedisk_flushcache (ide_drive_t *drive) | |
711 | { | |
712 | ide_task_t args; | |
713 | ||
714 | memset(&args, 0, sizeof(ide_task_t)); | |
715 | if (ide_id_has_flush_cache_ext(drive->id)) | |
650d841d | 716 | args.tf.command = WIN_FLUSH_CACHE_EXT; |
1da177e4 | 717 | else |
650d841d | 718 | args.tf.command = WIN_FLUSH_CACHE; |
a3bbb9d8 | 719 | args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE; |
9a3c49be | 720 | return ide_no_data_taskfile(drive, &args); |
1da177e4 LT |
721 | } |
722 | ||
723 | static int set_acoustic (ide_drive_t *drive, int arg) | |
724 | { | |
725 | ide_task_t args; | |
726 | ||
1497943e BZ |
727 | if (arg < 0 || arg > 254) |
728 | return -EINVAL; | |
729 | ||
1da177e4 | 730 | memset(&args, 0, sizeof(ide_task_t)); |
650d841d BZ |
731 | args.tf.feature = arg ? SETFEATURES_EN_AAM : SETFEATURES_DIS_AAM; |
732 | args.tf.nsect = arg; | |
733 | args.tf.command = WIN_SETFEATURES; | |
a3bbb9d8 | 734 | args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE; |
9a3c49be | 735 | ide_no_data_taskfile(drive, &args); |
1da177e4 LT |
736 | drive->acoustic = arg; |
737 | return 0; | |
738 | } | |
739 | ||
740 | /* | |
741 | * drive->addressing: | |
742 | * 0: 28-bit | |
743 | * 1: 48-bit | |
744 | * 2: 48-bit capable doing 28-bit | |
745 | */ | |
746 | static int set_lba_addressing(ide_drive_t *drive, int arg) | |
747 | { | |
1497943e BZ |
748 | if (arg < 0 || arg > 2) |
749 | return -EINVAL; | |
750 | ||
1da177e4 LT |
751 | drive->addressing = 0; |
752 | ||
238e4f14 | 753 | if (drive->hwif->host_flags & IDE_HFLAG_NO_LBA48) |
1da177e4 LT |
754 | return 0; |
755 | ||
756 | if (!idedisk_supports_lba48(drive->id)) | |
757 | return -EIO; | |
758 | drive->addressing = arg; | |
759 | return 0; | |
760 | } | |
761 | ||
7662d046 | 762 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
763 | static void idedisk_add_settings(ide_drive_t *drive) |
764 | { | |
765 | struct hd_driveid *id = drive->id; | |
766 | ||
1497943e BZ |
767 | ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, &drive->bios_cyl, NULL); |
768 | ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL); | |
769 | ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL); | |
770 | ide_add_setting(drive, "address", SETTING_RW, TYPE_BYTE, 0, 2, 1, 1, &drive->addressing, set_lba_addressing); | |
771 | ide_add_setting(drive, "bswap", SETTING_READ, TYPE_BYTE, 0, 1, 1, 1, &drive->bswap, NULL); | |
772 | ide_add_setting(drive, "multcount", SETTING_RW, TYPE_BYTE, 0, id->max_multsect, 1, 1, &drive->mult_count, set_multcount); | |
773 | ide_add_setting(drive, "nowerr", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->nowerr, set_nowerr); | |
774 | ide_add_setting(drive, "lun", SETTING_RW, TYPE_INT, 0, 7, 1, 1, &drive->lun, NULL); | |
775 | ide_add_setting(drive, "wcache", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->wcache, write_cache); | |
776 | ide_add_setting(drive, "acoustic", SETTING_RW, TYPE_BYTE, 0, 254, 1, 1, &drive->acoustic, set_acoustic); | |
777 | ide_add_setting(drive, "failures", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, &drive->failures, NULL); | |
778 | ide_add_setting(drive, "max_failures", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, &drive->max_failures, NULL); | |
1da177e4 | 779 | } |
7662d046 BZ |
780 | #else |
781 | static inline void idedisk_add_settings(ide_drive_t *drive) { ; } | |
782 | #endif | |
1da177e4 LT |
783 | |
784 | static void idedisk_setup (ide_drive_t *drive) | |
785 | { | |
238e4f14 | 786 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 LT |
787 | struct hd_driveid *id = drive->id; |
788 | unsigned long long capacity; | |
1da177e4 LT |
789 | |
790 | idedisk_add_settings(drive); | |
791 | ||
792 | if (drive->id_read == 0) | |
793 | return; | |
794 | ||
98109337 | 795 | if (drive->removable) { |
1da177e4 LT |
796 | /* |
797 | * Removable disks (eg. SYQUEST); ignore 'WD' drives | |
798 | */ | |
799 | if (id->model[0] != 'W' || id->model[1] != 'D') { | |
800 | drive->doorlocking = 1; | |
801 | } | |
802 | } | |
803 | ||
804 | (void)set_lba_addressing(drive, 1); | |
805 | ||
806 | if (drive->addressing == 1) { | |
1da177e4 LT |
807 | int max_s = 2048; |
808 | ||
809 | if (max_s > hwif->rqsize) | |
810 | max_s = hwif->rqsize; | |
811 | ||
812 | blk_queue_max_sectors(drive->queue, max_s); | |
813 | } | |
814 | ||
815 | printk(KERN_INFO "%s: max request size: %dKiB\n", drive->name, drive->queue->max_sectors / 2); | |
816 | ||
817 | /* calculate drive capacity, and select LBA if possible */ | |
818 | init_idedisk_capacity (drive); | |
819 | ||
820 | /* limit drive capacity to 137GB if LBA48 cannot be used */ | |
821 | if (drive->addressing == 0 && drive->capacity64 > 1ULL << 28) { | |
822 | printk(KERN_WARNING "%s: cannot use LBA48 - full capacity " | |
823 | "%llu sectors (%llu MB)\n", | |
824 | drive->name, (unsigned long long)drive->capacity64, | |
825 | sectors_to_MB(drive->capacity64)); | |
826 | drive->capacity64 = 1ULL << 28; | |
827 | } | |
828 | ||
238e4f14 | 829 | if ((hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && drive->addressing) { |
1da177e4 LT |
830 | if (drive->capacity64 > 1ULL << 28) { |
831 | printk(KERN_INFO "%s: cannot use LBA48 DMA - PIO mode will" | |
832 | " be used for accessing sectors > %u\n", | |
833 | drive->name, 1 << 28); | |
834 | } else | |
835 | drive->addressing = 0; | |
836 | } | |
837 | ||
838 | /* | |
839 | * if possible, give fdisk access to more of the drive, | |
840 | * by correcting bios_cyls: | |
841 | */ | |
842 | capacity = idedisk_capacity (drive); | |
843 | if (!drive->forced_geom) { | |
844 | ||
845 | if (idedisk_supports_lba48(drive->id)) { | |
846 | /* compatibility */ | |
847 | drive->bios_sect = 63; | |
848 | drive->bios_head = 255; | |
849 | } | |
850 | ||
851 | if (drive->bios_sect && drive->bios_head) { | |
852 | unsigned int cap0 = capacity; /* truncate to 32 bits */ | |
853 | unsigned int cylsz, cyl; | |
854 | ||
855 | if (cap0 != capacity) | |
856 | drive->bios_cyl = 65535; | |
857 | else { | |
858 | cylsz = drive->bios_sect * drive->bios_head; | |
859 | cyl = cap0 / cylsz; | |
860 | if (cyl > 65535) | |
861 | cyl = 65535; | |
862 | if (cyl > drive->bios_cyl) | |
863 | drive->bios_cyl = cyl; | |
864 | } | |
865 | } | |
866 | } | |
867 | printk(KERN_INFO "%s: %llu sectors (%llu MB)", | |
868 | drive->name, capacity, sectors_to_MB(capacity)); | |
869 | ||
870 | /* Only print cache size when it was specified */ | |
871 | if (id->buf_size) | |
872 | printk (" w/%dKiB Cache", id->buf_size/2); | |
873 | ||
3ab7efe8 BZ |
874 | printk(KERN_CONT ", CHS=%d/%d/%d\n", |
875 | drive->bios_cyl, drive->bios_head, drive->bios_sect); | |
1da177e4 | 876 | |
1da177e4 LT |
877 | /* write cache enabled? */ |
878 | if ((id->csfo & 1) || (id->cfs_enable_1 & (1 << 5))) | |
879 | drive->wcache = 1; | |
880 | ||
881 | write_cache(drive, 1); | |
1da177e4 LT |
882 | } |
883 | ||
884 | static void ide_cacheflush_p(ide_drive_t *drive) | |
885 | { | |
886 | if (!drive->wcache || !ide_id_has_flush_cache(drive->id)) | |
887 | return; | |
888 | ||
889 | if (do_idedisk_flushcache(drive)) | |
890 | printk(KERN_INFO "%s: wcache flush failed!\n", drive->name); | |
891 | } | |
892 | ||
4031bbe4 | 893 | static void ide_disk_remove(ide_drive_t *drive) |
1da177e4 LT |
894 | { |
895 | struct ide_disk_obj *idkp = drive->driver_data; | |
896 | struct gendisk *g = idkp->disk; | |
897 | ||
7662d046 | 898 | ide_proc_unregister_driver(drive, idkp->driver); |
8604affd | 899 | |
1da177e4 LT |
900 | del_gendisk(g); |
901 | ||
d36fef6f BZ |
902 | ide_cacheflush_p(drive); |
903 | ||
1da177e4 | 904 | ide_disk_put(idkp); |
1da177e4 LT |
905 | } |
906 | ||
907 | static void ide_disk_release(struct kref *kref) | |
908 | { | |
909 | struct ide_disk_obj *idkp = to_ide_disk(kref); | |
910 | ide_drive_t *drive = idkp->drive; | |
911 | struct gendisk *g = idkp->disk; | |
912 | ||
913 | drive->driver_data = NULL; | |
1da177e4 LT |
914 | g->private_data = NULL; |
915 | put_disk(g); | |
916 | kfree(idkp); | |
917 | } | |
918 | ||
4031bbe4 | 919 | static int ide_disk_probe(ide_drive_t *drive); |
1da177e4 | 920 | |
0d2157f7 LT |
921 | /* |
922 | * On HPA drives the capacity needs to be | |
923 | * reinitilized on resume otherwise the disk | |
924 | * can not be used and a hard reset is required | |
925 | */ | |
926 | static void ide_disk_resume(ide_drive_t *drive) | |
927 | { | |
928 | if (idedisk_supports_hpa(drive->id)) | |
929 | init_idedisk_capacity(drive); | |
930 | } | |
931 | ||
4031bbe4 | 932 | static void ide_device_shutdown(ide_drive_t *drive) |
1da177e4 | 933 | { |
1da177e4 LT |
934 | #ifdef CONFIG_ALPHA |
935 | /* On Alpha, halt(8) doesn't actually turn the machine off, | |
936 | it puts you into the sort of firmware monitor. Typically, | |
937 | it's used to boot another kernel image, so it's not much | |
938 | different from reboot(8). Therefore, we don't need to | |
939 | spin down the disk in this case, especially since Alpha | |
940 | firmware doesn't handle disks in standby mode properly. | |
941 | On the other hand, it's reasonably safe to turn the power | |
942 | off when the shutdown process reaches the firmware prompt, | |
943 | as the firmware initialization takes rather long time - | |
944 | at least 10 seconds, which should be sufficient for | |
945 | the disk to expire its write cache. */ | |
946 | if (system_state != SYSTEM_POWER_OFF) { | |
947 | #else | |
948 | if (system_state == SYSTEM_RESTART) { | |
949 | #endif | |
950 | ide_cacheflush_p(drive); | |
951 | return; | |
952 | } | |
953 | ||
954 | printk("Shutdown: %s\n", drive->name); | |
4031bbe4 | 955 | drive->gendev.bus->suspend(&drive->gendev, PMSG_SUSPEND); |
1da177e4 LT |
956 | } |
957 | ||
1da177e4 | 958 | static ide_driver_t idedisk_driver = { |
1da177e4 | 959 | .gen_driver = { |
4ef3b8f4 | 960 | .owner = THIS_MODULE, |
8604affd BZ |
961 | .name = "ide-disk", |
962 | .bus = &ide_bus_type, | |
1da177e4 | 963 | }, |
4031bbe4 RK |
964 | .probe = ide_disk_probe, |
965 | .remove = ide_disk_remove, | |
0d2157f7 | 966 | .resume = ide_disk_resume, |
4031bbe4 | 967 | .shutdown = ide_device_shutdown, |
1da177e4 LT |
968 | .version = IDEDISK_VERSION, |
969 | .media = ide_disk, | |
1da177e4 | 970 | .supports_dsc_overlap = 0, |
1da177e4 LT |
971 | .do_request = ide_do_rw_disk, |
972 | .end_request = ide_end_request, | |
973 | .error = __ide_error, | |
974 | .abort = __ide_abort, | |
7662d046 | 975 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 976 | .proc = idedisk_proc, |
7662d046 | 977 | #endif |
1da177e4 LT |
978 | }; |
979 | ||
980 | static int idedisk_open(struct inode *inode, struct file *filp) | |
981 | { | |
982 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
983 | struct ide_disk_obj *idkp; | |
984 | ide_drive_t *drive; | |
985 | ||
986 | if (!(idkp = ide_disk_get(disk))) | |
987 | return -ENXIO; | |
988 | ||
989 | drive = idkp->drive; | |
990 | ||
c94964a4 BZ |
991 | idkp->openers++; |
992 | ||
993 | if (drive->removable && idkp->openers == 1) { | |
1da177e4 LT |
994 | ide_task_t args; |
995 | memset(&args, 0, sizeof(ide_task_t)); | |
650d841d | 996 | args.tf.command = WIN_DOORLOCK; |
a3bbb9d8 | 997 | args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE; |
1da177e4 LT |
998 | check_disk_change(inode->i_bdev); |
999 | /* | |
1000 | * Ignore the return code from door_lock, | |
1001 | * since the open() has already succeeded, | |
1002 | * and the door_lock is irrelevant at this point. | |
1003 | */ | |
9a3c49be | 1004 | if (drive->doorlocking && ide_no_data_taskfile(drive, &args)) |
1da177e4 LT |
1005 | drive->doorlocking = 0; |
1006 | } | |
1007 | return 0; | |
1008 | } | |
1009 | ||
1010 | static int idedisk_release(struct inode *inode, struct file *filp) | |
1011 | { | |
1012 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1013 | struct ide_disk_obj *idkp = ide_disk_g(disk); | |
1014 | ide_drive_t *drive = idkp->drive; | |
1015 | ||
c94964a4 | 1016 | if (idkp->openers == 1) |
1da177e4 | 1017 | ide_cacheflush_p(drive); |
c94964a4 BZ |
1018 | |
1019 | if (drive->removable && idkp->openers == 1) { | |
1da177e4 LT |
1020 | ide_task_t args; |
1021 | memset(&args, 0, sizeof(ide_task_t)); | |
650d841d | 1022 | args.tf.command = WIN_DOORUNLOCK; |
a3bbb9d8 | 1023 | args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE; |
9a3c49be | 1024 | if (drive->doorlocking && ide_no_data_taskfile(drive, &args)) |
1da177e4 LT |
1025 | drive->doorlocking = 0; |
1026 | } | |
c94964a4 BZ |
1027 | |
1028 | idkp->openers--; | |
1da177e4 LT |
1029 | |
1030 | ide_disk_put(idkp); | |
1031 | ||
1032 | return 0; | |
1033 | } | |
1034 | ||
a885c8c4 CH |
1035 | static int idedisk_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
1036 | { | |
1037 | struct ide_disk_obj *idkp = ide_disk_g(bdev->bd_disk); | |
1038 | ide_drive_t *drive = idkp->drive; | |
1039 | ||
1040 | geo->heads = drive->bios_head; | |
1041 | geo->sectors = drive->bios_sect; | |
1042 | geo->cylinders = (u16)drive->bios_cyl; /* truncate */ | |
1043 | return 0; | |
1044 | } | |
1045 | ||
1da177e4 LT |
1046 | static int idedisk_ioctl(struct inode *inode, struct file *file, |
1047 | unsigned int cmd, unsigned long arg) | |
1048 | { | |
1497943e | 1049 | unsigned long flags; |
1da177e4 LT |
1050 | struct block_device *bdev = inode->i_bdev; |
1051 | struct ide_disk_obj *idkp = ide_disk_g(bdev->bd_disk); | |
1497943e BZ |
1052 | ide_drive_t *drive = idkp->drive; |
1053 | int err, (*setfunc)(ide_drive_t *, int); | |
1054 | u8 *val; | |
1055 | ||
1056 | switch (cmd) { | |
1057 | case HDIO_GET_ADDRESS: val = &drive->addressing; goto read_val; | |
1058 | case HDIO_GET_MULTCOUNT: val = &drive->mult_count; goto read_val; | |
1059 | case HDIO_GET_NOWERR: val = &drive->nowerr; goto read_val; | |
1060 | case HDIO_GET_WCACHE: val = &drive->wcache; goto read_val; | |
1061 | case HDIO_GET_ACOUSTIC: val = &drive->acoustic; goto read_val; | |
1062 | case HDIO_SET_ADDRESS: setfunc = set_lba_addressing; goto set_val; | |
1063 | case HDIO_SET_MULTCOUNT: setfunc = set_multcount; goto set_val; | |
1064 | case HDIO_SET_NOWERR: setfunc = set_nowerr; goto set_val; | |
1065 | case HDIO_SET_WCACHE: setfunc = write_cache; goto set_val; | |
1066 | case HDIO_SET_ACOUSTIC: setfunc = set_acoustic; goto set_val; | |
1067 | } | |
1068 | ||
1069 | return generic_ide_ioctl(drive, file, bdev, cmd, arg); | |
1070 | ||
1071 | read_val: | |
f9383c42 | 1072 | mutex_lock(&ide_setting_mtx); |
1497943e BZ |
1073 | spin_lock_irqsave(&ide_lock, flags); |
1074 | err = *val; | |
1075 | spin_unlock_irqrestore(&ide_lock, flags); | |
f9383c42 | 1076 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
1077 | return err >= 0 ? put_user(err, (long __user *)arg) : err; |
1078 | ||
1079 | set_val: | |
1080 | if (bdev != bdev->bd_contains) | |
1081 | err = -EINVAL; | |
1082 | else { | |
1083 | if (!capable(CAP_SYS_ADMIN)) | |
1084 | err = -EACCES; | |
1085 | else { | |
f9383c42 | 1086 | mutex_lock(&ide_setting_mtx); |
1497943e | 1087 | err = setfunc(drive, arg); |
f9383c42 | 1088 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
1089 | } |
1090 | } | |
1091 | return err; | |
1da177e4 LT |
1092 | } |
1093 | ||
1094 | static int idedisk_media_changed(struct gendisk *disk) | |
1095 | { | |
1096 | struct ide_disk_obj *idkp = ide_disk_g(disk); | |
1097 | ide_drive_t *drive = idkp->drive; | |
1098 | ||
1099 | /* do not scan partitions twice if this is a removable device */ | |
1100 | if (drive->attach) { | |
1101 | drive->attach = 0; | |
1102 | return 0; | |
1103 | } | |
1104 | /* if removable, always assume it was changed */ | |
1105 | return drive->removable; | |
1106 | } | |
1107 | ||
1108 | static int idedisk_revalidate_disk(struct gendisk *disk) | |
1109 | { | |
1110 | struct ide_disk_obj *idkp = ide_disk_g(disk); | |
1111 | set_capacity(disk, idedisk_capacity(idkp->drive)); | |
1112 | return 0; | |
1113 | } | |
1114 | ||
1115 | static struct block_device_operations idedisk_ops = { | |
1116 | .owner = THIS_MODULE, | |
1117 | .open = idedisk_open, | |
1118 | .release = idedisk_release, | |
1119 | .ioctl = idedisk_ioctl, | |
a885c8c4 | 1120 | .getgeo = idedisk_getgeo, |
1da177e4 LT |
1121 | .media_changed = idedisk_media_changed, |
1122 | .revalidate_disk= idedisk_revalidate_disk | |
1123 | }; | |
1124 | ||
1125 | MODULE_DESCRIPTION("ATA DISK Driver"); | |
1126 | ||
4031bbe4 | 1127 | static int ide_disk_probe(ide_drive_t *drive) |
1da177e4 LT |
1128 | { |
1129 | struct ide_disk_obj *idkp; | |
1130 | struct gendisk *g; | |
1131 | ||
1132 | /* strstr("foo", "") is non-NULL */ | |
1133 | if (!strstr("ide-disk", drive->driver_req)) | |
1134 | goto failed; | |
1135 | if (!drive->present) | |
1136 | goto failed; | |
1137 | if (drive->media != ide_disk) | |
1138 | goto failed; | |
1139 | ||
f5e3c2fa | 1140 | idkp = kzalloc(sizeof(*idkp), GFP_KERNEL); |
1da177e4 LT |
1141 | if (!idkp) |
1142 | goto failed; | |
1143 | ||
1946089a | 1144 | g = alloc_disk_node(1 << PARTN_BITS, |
86b37860 | 1145 | hwif_to_node(drive->hwif)); |
1da177e4 LT |
1146 | if (!g) |
1147 | goto out_free_idkp; | |
1148 | ||
1149 | ide_init_disk(g, drive); | |
1150 | ||
7662d046 | 1151 | ide_proc_register_driver(drive, &idedisk_driver); |
1da177e4 | 1152 | |
1da177e4 LT |
1153 | kref_init(&idkp->kref); |
1154 | ||
1155 | idkp->drive = drive; | |
1156 | idkp->driver = &idedisk_driver; | |
1157 | idkp->disk = g; | |
1158 | ||
1159 | g->private_data = &idkp->driver; | |
1160 | ||
1161 | drive->driver_data = idkp; | |
1162 | ||
1da177e4 LT |
1163 | idedisk_setup(drive); |
1164 | if ((!drive->head || drive->head > 16) && !drive->select.b.lba) { | |
1165 | printk(KERN_ERR "%s: INVALID GEOMETRY: %d PHYSICAL HEADS?\n", | |
1166 | drive->name, drive->head); | |
1167 | drive->attach = 0; | |
1168 | } else | |
1169 | drive->attach = 1; | |
8604affd | 1170 | |
1da177e4 | 1171 | g->minors = 1 << PARTN_BITS; |
1da177e4 LT |
1172 | g->driverfs_dev = &drive->gendev; |
1173 | g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; | |
1174 | set_capacity(g, idedisk_capacity(drive)); | |
1175 | g->fops = &idedisk_ops; | |
1176 | add_disk(g); | |
1177 | return 0; | |
1178 | ||
1da177e4 LT |
1179 | out_free_idkp: |
1180 | kfree(idkp); | |
1181 | failed: | |
8604affd | 1182 | return -ENODEV; |
1da177e4 LT |
1183 | } |
1184 | ||
1185 | static void __exit idedisk_exit (void) | |
1186 | { | |
8604affd | 1187 | driver_unregister(&idedisk_driver.gen_driver); |
1da177e4 LT |
1188 | } |
1189 | ||
17514e8a | 1190 | static int __init idedisk_init(void) |
1da177e4 | 1191 | { |
8604affd | 1192 | return driver_register(&idedisk_driver.gen_driver); |
1da177e4 LT |
1193 | } |
1194 | ||
263756ec | 1195 | MODULE_ALIAS("ide:*m-disk*"); |
1da177e4 LT |
1196 | module_init(idedisk_init); |
1197 | module_exit(idedisk_exit); | |
1198 | MODULE_LICENSE("GPL"); |