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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. | |
16 | * | |
17 | * Version 1.00 move disk only code from ide.c to ide-disk.c | |
18 | * support optional byte-swapping of all data | |
19 | * Version 1.01 fix previous byte-swapping code | |
20 | * Version 1.02 remove ", LBA" from drive identification msgs | |
21 | * Version 1.03 fix display of id->buf_size for big-endian | |
22 | * Version 1.04 add /proc configurable settings and S.M.A.R.T support | |
23 | * Version 1.05 add capacity support for ATA3 >= 8GB | |
24 | * Version 1.06 get boot-up messages to show full cyl count | |
25 | * Version 1.07 disable door-locking if it fails | |
26 | * Version 1.08 fixed CHS/LBA translations for ATA4 > 8GB, | |
27 | * process of adding new ATA4 compliance. | |
28 | * fixed problems in allowing fdisk to see | |
29 | * the entire disk. | |
30 | * Version 1.09 added increment of rq->sector in ide_multwrite | |
31 | * added UDMA 3/4 reporting | |
32 | * Version 1.10 request queue changes, Ultra DMA 100 | |
33 | * Version 1.11 added 48-bit lba | |
34 | * Version 1.12 adding taskfile io access method | |
35 | * Version 1.13 added standby and flush-cache for notifier | |
36 | * Version 1.14 added acoustic-wcache | |
37 | * Version 1.15 convert all calls to ide_raw_taskfile | |
38 | * since args will return register content. | |
39 | * Version 1.16 added suspend-resume-checkpower | |
d6e05edc | 40 | * Version 1.17 do flush on standby, do flush on ATA < ATA6 |
1da177e4 LT |
41 | * fix wcache setup. |
42 | */ | |
43 | ||
44 | #define IDEDISK_VERSION "1.18" | |
45 | ||
1da177e4 LT |
46 | //#define DEBUG |
47 | ||
1da177e4 LT |
48 | #include <linux/module.h> |
49 | #include <linux/types.h> | |
50 | #include <linux/string.h> | |
51 | #include <linux/kernel.h> | |
52 | #include <linux/timer.h> | |
53 | #include <linux/mm.h> | |
54 | #include <linux/interrupt.h> | |
55 | #include <linux/major.h> | |
56 | #include <linux/errno.h> | |
57 | #include <linux/genhd.h> | |
58 | #include <linux/slab.h> | |
59 | #include <linux/delay.h> | |
cf8b8975 | 60 | #include <linux/mutex.h> |
2bfb646c | 61 | #include <linux/leds.h> |
1da177e4 LT |
62 | |
63 | #define _IDE_DISK | |
64 | ||
65 | #include <linux/ide.h> | |
66 | ||
67 | #include <asm/byteorder.h> | |
68 | #include <asm/irq.h> | |
69 | #include <asm/uaccess.h> | |
70 | #include <asm/io.h> | |
71 | #include <asm/div64.h> | |
72 | ||
73 | struct ide_disk_obj { | |
74 | ide_drive_t *drive; | |
75 | ide_driver_t *driver; | |
76 | struct gendisk *disk; | |
77 | struct kref kref; | |
c94964a4 | 78 | unsigned int openers; /* protected by BKL for now */ |
1da177e4 LT |
79 | }; |
80 | ||
cf8b8975 | 81 | static DEFINE_MUTEX(idedisk_ref_mutex); |
1da177e4 LT |
82 | |
83 | #define to_ide_disk(obj) container_of(obj, struct ide_disk_obj, kref) | |
84 | ||
85 | #define ide_disk_g(disk) \ | |
86 | container_of((disk)->private_data, struct ide_disk_obj, driver) | |
87 | ||
88 | static struct ide_disk_obj *ide_disk_get(struct gendisk *disk) | |
89 | { | |
90 | struct ide_disk_obj *idkp = NULL; | |
91 | ||
cf8b8975 | 92 | mutex_lock(&idedisk_ref_mutex); |
1da177e4 LT |
93 | idkp = ide_disk_g(disk); |
94 | if (idkp) | |
95 | kref_get(&idkp->kref); | |
cf8b8975 | 96 | mutex_unlock(&idedisk_ref_mutex); |
1da177e4 LT |
97 | return idkp; |
98 | } | |
99 | ||
100 | static void ide_disk_release(struct kref *); | |
101 | ||
102 | static void ide_disk_put(struct ide_disk_obj *idkp) | |
103 | { | |
cf8b8975 | 104 | mutex_lock(&idedisk_ref_mutex); |
1da177e4 | 105 | kref_put(&idkp->kref, ide_disk_release); |
cf8b8975 | 106 | mutex_unlock(&idedisk_ref_mutex); |
1da177e4 LT |
107 | } |
108 | ||
109 | /* | |
110 | * lba_capacity_is_ok() performs a sanity check on the claimed "lba_capacity" | |
111 | * value for this drive (from its reported identification information). | |
112 | * | |
113 | * Returns: 1 if lba_capacity looks sensible | |
114 | * 0 otherwise | |
115 | * | |
116 | * It is called only once for each drive. | |
117 | */ | |
118 | static int lba_capacity_is_ok (struct hd_driveid *id) | |
119 | { | |
120 | unsigned long lba_sects, chs_sects, head, tail; | |
121 | ||
6efd9360 AC |
122 | /* No non-LBA info .. so valid! */ |
123 | if (id->cyls == 0) | |
124 | return 1; | |
125 | ||
1da177e4 LT |
126 | /* |
127 | * The ATA spec tells large drives to return | |
128 | * C/H/S = 16383/16/63 independent of their size. | |
129 | * Some drives can be jumpered to use 15 heads instead of 16. | |
130 | * Some drives can be jumpered to use 4092 cyls instead of 16383. | |
131 | */ | |
132 | if ((id->cyls == 16383 | |
133 | || (id->cyls == 4092 && id->cur_cyls == 16383)) && | |
134 | id->sectors == 63 && | |
135 | (id->heads == 15 || id->heads == 16) && | |
136 | (id->lba_capacity >= 16383*63*id->heads)) | |
137 | return 1; | |
138 | ||
139 | lba_sects = id->lba_capacity; | |
140 | chs_sects = id->cyls * id->heads * id->sectors; | |
141 | ||
142 | /* perform a rough sanity check on lba_sects: within 10% is OK */ | |
143 | if ((lba_sects - chs_sects) < chs_sects/10) | |
144 | return 1; | |
145 | ||
146 | /* some drives have the word order reversed */ | |
147 | head = ((lba_sects >> 16) & 0xffff); | |
148 | tail = (lba_sects & 0xffff); | |
149 | lba_sects = (head | (tail << 16)); | |
150 | if ((lba_sects - chs_sects) < chs_sects/10) { | |
151 | id->lba_capacity = lba_sects; | |
152 | return 1; /* lba_capacity is (now) good */ | |
153 | } | |
154 | ||
155 | return 0; /* lba_capacity value may be bad */ | |
156 | } | |
157 | ||
158 | /* | |
159 | * __ide_do_rw_disk() issues READ and WRITE commands to a disk, | |
160 | * using LBA if supported, or CHS otherwise, to address sectors. | |
161 | */ | |
162 | static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq, sector_t block) | |
163 | { | |
164 | ide_hwif_t *hwif = HWIF(drive); | |
165 | unsigned int dma = drive->using_dma; | |
166 | u8 lba48 = (drive->addressing == 1) ? 1 : 0; | |
167 | task_ioreg_t command = WIN_NOP; | |
168 | ata_nsector_t nsectors; | |
169 | ||
170 | nsectors.all = (u16) rq->nr_sectors; | |
171 | ||
172 | if (hwif->no_lba48_dma && lba48 && dma) { | |
173 | if (block + rq->nr_sectors > 1ULL << 28) | |
174 | dma = 0; | |
175 | else | |
176 | lba48 = 0; | |
177 | } | |
178 | ||
179 | if (!dma) { | |
180 | ide_init_sg_cmd(drive, rq); | |
181 | ide_map_sg(drive, rq); | |
182 | } | |
183 | ||
184 | if (IDE_CONTROL_REG) | |
185 | hwif->OUTB(drive->ctl, IDE_CONTROL_REG); | |
186 | ||
187 | /* FIXME: SELECT_MASK(drive, 0) ? */ | |
188 | ||
189 | if (drive->select.b.lba) { | |
190 | if (lba48) { | |
191 | task_ioreg_t tasklets[10]; | |
192 | ||
c2f8311d MR |
193 | pr_debug("%s: LBA=0x%012llx\n", drive->name, |
194 | (unsigned long long)block); | |
1da177e4 LT |
195 | |
196 | tasklets[0] = 0; | |
197 | tasklets[1] = 0; | |
198 | tasklets[2] = nsectors.b.low; | |
199 | tasklets[3] = nsectors.b.high; | |
200 | tasklets[4] = (task_ioreg_t) block; | |
201 | tasklets[5] = (task_ioreg_t) (block>>8); | |
202 | tasklets[6] = (task_ioreg_t) (block>>16); | |
203 | tasklets[7] = (task_ioreg_t) (block>>24); | |
204 | if (sizeof(block) == 4) { | |
205 | tasklets[8] = (task_ioreg_t) 0; | |
206 | tasklets[9] = (task_ioreg_t) 0; | |
207 | } else { | |
208 | tasklets[8] = (task_ioreg_t)((u64)block >> 32); | |
209 | tasklets[9] = (task_ioreg_t)((u64)block >> 40); | |
210 | } | |
211 | #ifdef DEBUG | |
212 | printk("%s: 0x%02x%02x 0x%02x%02x%02x%02x%02x%02x\n", | |
213 | drive->name, tasklets[3], tasklets[2], | |
214 | tasklets[9], tasklets[8], tasklets[7], | |
215 | tasklets[6], tasklets[5], tasklets[4]); | |
216 | #endif | |
217 | hwif->OUTB(tasklets[1], IDE_FEATURE_REG); | |
218 | hwif->OUTB(tasklets[3], IDE_NSECTOR_REG); | |
219 | hwif->OUTB(tasklets[7], IDE_SECTOR_REG); | |
220 | hwif->OUTB(tasklets[8], IDE_LCYL_REG); | |
221 | hwif->OUTB(tasklets[9], IDE_HCYL_REG); | |
222 | ||
223 | hwif->OUTB(tasklets[0], IDE_FEATURE_REG); | |
224 | hwif->OUTB(tasklets[2], IDE_NSECTOR_REG); | |
225 | hwif->OUTB(tasklets[4], IDE_SECTOR_REG); | |
226 | hwif->OUTB(tasklets[5], IDE_LCYL_REG); | |
227 | hwif->OUTB(tasklets[6], IDE_HCYL_REG); | |
228 | hwif->OUTB(0x00|drive->select.all,IDE_SELECT_REG); | |
229 | } else { | |
230 | hwif->OUTB(0x00, IDE_FEATURE_REG); | |
231 | hwif->OUTB(nsectors.b.low, IDE_NSECTOR_REG); | |
232 | hwif->OUTB(block, IDE_SECTOR_REG); | |
233 | hwif->OUTB(block>>=8, IDE_LCYL_REG); | |
234 | hwif->OUTB(block>>=8, IDE_HCYL_REG); | |
235 | hwif->OUTB(((block>>8)&0x0f)|drive->select.all,IDE_SELECT_REG); | |
236 | } | |
237 | } else { | |
238 | unsigned int sect,head,cyl,track; | |
239 | track = (int)block / drive->sect; | |
240 | sect = (int)block % drive->sect + 1; | |
241 | hwif->OUTB(sect, IDE_SECTOR_REG); | |
242 | head = track % drive->head; | |
243 | cyl = track / drive->head; | |
244 | ||
245 | pr_debug("%s: CHS=%u/%u/%u\n", drive->name, cyl, head, sect); | |
246 | ||
247 | hwif->OUTB(0x00, IDE_FEATURE_REG); | |
248 | hwif->OUTB(nsectors.b.low, IDE_NSECTOR_REG); | |
249 | hwif->OUTB(cyl, IDE_LCYL_REG); | |
250 | hwif->OUTB(cyl>>8, IDE_HCYL_REG); | |
251 | hwif->OUTB(head|drive->select.all,IDE_SELECT_REG); | |
252 | } | |
253 | ||
254 | if (dma) { | |
255 | if (!hwif->dma_setup(drive)) { | |
256 | if (rq_data_dir(rq)) { | |
257 | command = lba48 ? WIN_WRITEDMA_EXT : WIN_WRITEDMA; | |
258 | if (drive->vdma) | |
259 | command = lba48 ? WIN_WRITE_EXT: WIN_WRITE; | |
260 | } else { | |
261 | command = lba48 ? WIN_READDMA_EXT : WIN_READDMA; | |
262 | if (drive->vdma) | |
263 | command = lba48 ? WIN_READ_EXT: WIN_READ; | |
264 | } | |
265 | hwif->dma_exec_cmd(drive, command); | |
266 | hwif->dma_start(drive); | |
267 | return ide_started; | |
268 | } | |
269 | /* fallback to PIO */ | |
270 | ide_init_sg_cmd(drive, rq); | |
271 | } | |
272 | ||
273 | if (rq_data_dir(rq) == READ) { | |
274 | ||
275 | if (drive->mult_count) { | |
276 | hwif->data_phase = TASKFILE_MULTI_IN; | |
277 | command = lba48 ? WIN_MULTREAD_EXT : WIN_MULTREAD; | |
278 | } else { | |
279 | hwif->data_phase = TASKFILE_IN; | |
280 | command = lba48 ? WIN_READ_EXT : WIN_READ; | |
281 | } | |
282 | ||
283 | ide_execute_command(drive, command, &task_in_intr, WAIT_CMD, NULL); | |
284 | return ide_started; | |
285 | } else { | |
286 | if (drive->mult_count) { | |
287 | hwif->data_phase = TASKFILE_MULTI_OUT; | |
288 | command = lba48 ? WIN_MULTWRITE_EXT : WIN_MULTWRITE; | |
289 | } else { | |
290 | hwif->data_phase = TASKFILE_OUT; | |
291 | command = lba48 ? WIN_WRITE_EXT : WIN_WRITE; | |
292 | } | |
293 | ||
294 | /* FIXME: ->OUTBSYNC ? */ | |
295 | hwif->OUTB(command, IDE_COMMAND_REG); | |
296 | ||
297 | return pre_task_out_intr(drive, rq); | |
298 | } | |
299 | } | |
300 | ||
301 | /* | |
302 | * 268435455 == 137439 MB or 28bit limit | |
303 | * 320173056 == 163929 MB or 48bit addressing | |
304 | * 1073741822 == 549756 MB or 48bit addressing fake drive | |
305 | */ | |
306 | ||
307 | static ide_startstop_t ide_do_rw_disk (ide_drive_t *drive, struct request *rq, sector_t block) | |
308 | { | |
309 | ide_hwif_t *hwif = HWIF(drive); | |
310 | ||
311 | BUG_ON(drive->blocked); | |
312 | ||
313 | if (!blk_fs_request(rq)) { | |
314 | blk_dump_rq_flags(rq, "ide_do_rw_disk - bad command"); | |
315 | ide_end_request(drive, 0, 0); | |
316 | return ide_stopped; | |
317 | } | |
318 | ||
2bfb646c RP |
319 | ledtrig_ide_activity(); |
320 | ||
1da177e4 LT |
321 | pr_debug("%s: %sing: block=%llu, sectors=%lu, buffer=0x%08lx\n", |
322 | drive->name, rq_data_dir(rq) == READ ? "read" : "writ", | |
c2f8311d MR |
323 | (unsigned long long)block, rq->nr_sectors, |
324 | (unsigned long)rq->buffer); | |
1da177e4 LT |
325 | |
326 | if (hwif->rw_disk) | |
327 | hwif->rw_disk(drive, rq); | |
328 | ||
329 | return __ide_do_rw_disk(drive, rq, block); | |
330 | } | |
331 | ||
332 | /* | |
333 | * Queries for true maximum capacity of the drive. | |
334 | * Returns maximum LBA address (> 0) of the drive, 0 if failed. | |
335 | */ | |
336 | static unsigned long idedisk_read_native_max_address(ide_drive_t *drive) | |
337 | { | |
338 | ide_task_t args; | |
339 | unsigned long addr = 0; | |
340 | ||
341 | /* Create IDE/ATA command request structure */ | |
342 | memset(&args, 0, sizeof(ide_task_t)); | |
343 | args.tfRegister[IDE_SELECT_OFFSET] = 0x40; | |
344 | args.tfRegister[IDE_COMMAND_OFFSET] = WIN_READ_NATIVE_MAX; | |
345 | args.command_type = IDE_DRIVE_TASK_NO_DATA; | |
346 | args.handler = &task_no_data_intr; | |
347 | /* submit command request */ | |
348 | ide_raw_taskfile(drive, &args, NULL); | |
349 | ||
350 | /* if OK, compute maximum address value */ | |
351 | if ((args.tfRegister[IDE_STATUS_OFFSET] & 0x01) == 0) { | |
352 | addr = ((args.tfRegister[IDE_SELECT_OFFSET] & 0x0f) << 24) | |
353 | | ((args.tfRegister[ IDE_HCYL_OFFSET] ) << 16) | |
354 | | ((args.tfRegister[ IDE_LCYL_OFFSET] ) << 8) | |
355 | | ((args.tfRegister[IDE_SECTOR_OFFSET] )); | |
356 | addr++; /* since the return value is (maxlba - 1), we add 1 */ | |
357 | } | |
358 | return addr; | |
359 | } | |
360 | ||
361 | static unsigned long long idedisk_read_native_max_address_ext(ide_drive_t *drive) | |
362 | { | |
363 | ide_task_t args; | |
364 | unsigned long long addr = 0; | |
365 | ||
366 | /* Create IDE/ATA command request structure */ | |
367 | memset(&args, 0, sizeof(ide_task_t)); | |
368 | ||
369 | args.tfRegister[IDE_SELECT_OFFSET] = 0x40; | |
370 | args.tfRegister[IDE_COMMAND_OFFSET] = WIN_READ_NATIVE_MAX_EXT; | |
371 | args.command_type = IDE_DRIVE_TASK_NO_DATA; | |
372 | args.handler = &task_no_data_intr; | |
373 | /* submit command request */ | |
374 | ide_raw_taskfile(drive, &args, NULL); | |
375 | ||
376 | /* if OK, compute maximum address value */ | |
377 | if ((args.tfRegister[IDE_STATUS_OFFSET] & 0x01) == 0) { | |
378 | u32 high = (args.hobRegister[IDE_HCYL_OFFSET] << 16) | | |
379 | (args.hobRegister[IDE_LCYL_OFFSET] << 8) | | |
380 | args.hobRegister[IDE_SECTOR_OFFSET]; | |
381 | u32 low = ((args.tfRegister[IDE_HCYL_OFFSET])<<16) | | |
382 | ((args.tfRegister[IDE_LCYL_OFFSET])<<8) | | |
383 | (args.tfRegister[IDE_SECTOR_OFFSET]); | |
384 | addr = ((__u64)high << 24) | low; | |
385 | addr++; /* since the return value is (maxlba - 1), we add 1 */ | |
386 | } | |
387 | return addr; | |
388 | } | |
389 | ||
390 | /* | |
391 | * Sets maximum virtual LBA address of the drive. | |
392 | * Returns new maximum virtual LBA address (> 0) or 0 on failure. | |
393 | */ | |
394 | static unsigned long idedisk_set_max_address(ide_drive_t *drive, unsigned long addr_req) | |
395 | { | |
396 | ide_task_t args; | |
397 | unsigned long addr_set = 0; | |
398 | ||
399 | addr_req--; | |
400 | /* Create IDE/ATA command request structure */ | |
401 | memset(&args, 0, sizeof(ide_task_t)); | |
402 | args.tfRegister[IDE_SECTOR_OFFSET] = ((addr_req >> 0) & 0xff); | |
403 | args.tfRegister[IDE_LCYL_OFFSET] = ((addr_req >> 8) & 0xff); | |
404 | args.tfRegister[IDE_HCYL_OFFSET] = ((addr_req >> 16) & 0xff); | |
405 | args.tfRegister[IDE_SELECT_OFFSET] = ((addr_req >> 24) & 0x0f) | 0x40; | |
406 | args.tfRegister[IDE_COMMAND_OFFSET] = WIN_SET_MAX; | |
407 | args.command_type = IDE_DRIVE_TASK_NO_DATA; | |
408 | args.handler = &task_no_data_intr; | |
409 | /* submit command request */ | |
410 | ide_raw_taskfile(drive, &args, NULL); | |
411 | /* if OK, read new maximum address value */ | |
412 | if ((args.tfRegister[IDE_STATUS_OFFSET] & 0x01) == 0) { | |
413 | addr_set = ((args.tfRegister[IDE_SELECT_OFFSET] & 0x0f) << 24) | |
414 | | ((args.tfRegister[ IDE_HCYL_OFFSET] ) << 16) | |
415 | | ((args.tfRegister[ IDE_LCYL_OFFSET] ) << 8) | |
416 | | ((args.tfRegister[IDE_SECTOR_OFFSET] )); | |
417 | addr_set++; | |
418 | } | |
419 | return addr_set; | |
420 | } | |
421 | ||
422 | static unsigned long long idedisk_set_max_address_ext(ide_drive_t *drive, unsigned long long addr_req) | |
423 | { | |
424 | ide_task_t args; | |
425 | unsigned long long addr_set = 0; | |
426 | ||
427 | addr_req--; | |
428 | /* Create IDE/ATA command request structure */ | |
429 | memset(&args, 0, sizeof(ide_task_t)); | |
430 | args.tfRegister[IDE_SECTOR_OFFSET] = ((addr_req >> 0) & 0xff); | |
431 | args.tfRegister[IDE_LCYL_OFFSET] = ((addr_req >>= 8) & 0xff); | |
432 | args.tfRegister[IDE_HCYL_OFFSET] = ((addr_req >>= 8) & 0xff); | |
433 | args.tfRegister[IDE_SELECT_OFFSET] = 0x40; | |
434 | args.tfRegister[IDE_COMMAND_OFFSET] = WIN_SET_MAX_EXT; | |
435 | args.hobRegister[IDE_SECTOR_OFFSET] = (addr_req >>= 8) & 0xff; | |
436 | args.hobRegister[IDE_LCYL_OFFSET] = (addr_req >>= 8) & 0xff; | |
437 | args.hobRegister[IDE_HCYL_OFFSET] = (addr_req >>= 8) & 0xff; | |
438 | args.hobRegister[IDE_SELECT_OFFSET] = 0x40; | |
439 | args.hobRegister[IDE_CONTROL_OFFSET_HOB]= (drive->ctl|0x80); | |
440 | args.command_type = IDE_DRIVE_TASK_NO_DATA; | |
441 | args.handler = &task_no_data_intr; | |
442 | /* submit command request */ | |
443 | ide_raw_taskfile(drive, &args, NULL); | |
444 | /* if OK, compute maximum address value */ | |
445 | if ((args.tfRegister[IDE_STATUS_OFFSET] & 0x01) == 0) { | |
446 | u32 high = (args.hobRegister[IDE_HCYL_OFFSET] << 16) | | |
447 | (args.hobRegister[IDE_LCYL_OFFSET] << 8) | | |
448 | args.hobRegister[IDE_SECTOR_OFFSET]; | |
449 | u32 low = ((args.tfRegister[IDE_HCYL_OFFSET])<<16) | | |
450 | ((args.tfRegister[IDE_LCYL_OFFSET])<<8) | | |
451 | (args.tfRegister[IDE_SECTOR_OFFSET]); | |
452 | addr_set = ((__u64)high << 24) | low; | |
453 | addr_set++; | |
454 | } | |
455 | return addr_set; | |
456 | } | |
457 | ||
458 | static unsigned long long sectors_to_MB(unsigned long long n) | |
459 | { | |
460 | n <<= 9; /* make it bytes */ | |
461 | do_div(n, 1000000); /* make it MB */ | |
462 | return n; | |
463 | } | |
464 | ||
465 | /* | |
466 | * Bits 10 of command_set_1 and cfs_enable_1 must be equal, | |
467 | * so on non-buggy drives we need test only one. | |
468 | * However, we should also check whether these fields are valid. | |
469 | */ | |
470 | static inline int idedisk_supports_hpa(const struct hd_driveid *id) | |
471 | { | |
472 | return (id->command_set_1 & 0x0400) && (id->cfs_enable_1 & 0x0400); | |
473 | } | |
474 | ||
475 | /* | |
476 | * The same here. | |
477 | */ | |
478 | static inline int idedisk_supports_lba48(const struct hd_driveid *id) | |
479 | { | |
480 | return (id->command_set_2 & 0x0400) && (id->cfs_enable_2 & 0x0400) | |
481 | && id->lba_capacity_2; | |
482 | } | |
483 | ||
b0244a00 BZ |
484 | /* |
485 | * Some disks report total number of sectors instead of | |
486 | * maximum sector address. We list them here. | |
487 | */ | |
488 | static const struct drive_list_entry hpa_list[] = { | |
489 | { "ST340823A", NULL }, | |
490 | { NULL, NULL } | |
491 | }; | |
492 | ||
858119e1 | 493 | static void idedisk_check_hpa(ide_drive_t *drive) |
1da177e4 LT |
494 | { |
495 | unsigned long long capacity, set_max; | |
496 | int lba48 = idedisk_supports_lba48(drive->id); | |
497 | ||
498 | capacity = drive->capacity64; | |
499 | if (lba48) | |
500 | set_max = idedisk_read_native_max_address_ext(drive); | |
501 | else | |
502 | set_max = idedisk_read_native_max_address(drive); | |
503 | ||
b0244a00 BZ |
504 | if (ide_in_drive_list(drive->id, hpa_list)) { |
505 | /* | |
506 | * Since we are inclusive wrt to firmware revisions do this | |
507 | * extra check and apply the workaround only when needed. | |
508 | */ | |
509 | if (set_max == capacity + 1) | |
510 | set_max--; | |
511 | } | |
512 | ||
1da177e4 LT |
513 | if (set_max <= capacity) |
514 | return; | |
515 | ||
516 | printk(KERN_INFO "%s: Host Protected Area detected.\n" | |
517 | "\tcurrent capacity is %llu sectors (%llu MB)\n" | |
518 | "\tnative capacity is %llu sectors (%llu MB)\n", | |
519 | drive->name, | |
520 | capacity, sectors_to_MB(capacity), | |
521 | set_max, sectors_to_MB(set_max)); | |
522 | ||
523 | if (lba48) | |
524 | set_max = idedisk_set_max_address_ext(drive, set_max); | |
525 | else | |
526 | set_max = idedisk_set_max_address(drive, set_max); | |
527 | if (set_max) { | |
528 | drive->capacity64 = set_max; | |
529 | printk(KERN_INFO "%s: Host Protected Area disabled.\n", | |
530 | drive->name); | |
531 | } | |
532 | } | |
533 | ||
534 | /* | |
535 | * Compute drive->capacity, the full capacity of the drive | |
536 | * Called with drive->id != NULL. | |
537 | * | |
538 | * To compute capacity, this uses either of | |
539 | * | |
540 | * 1. CHS value set by user (whatever user sets will be trusted) | |
541 | * 2. LBA value from target drive (require new ATA feature) | |
542 | * 3. LBA value from system BIOS (new one is OK, old one may break) | |
543 | * 4. CHS value from system BIOS (traditional style) | |
544 | * | |
545 | * in above order (i.e., if value of higher priority is available, | |
546 | * reset will be ignored). | |
547 | */ | |
548 | static void init_idedisk_capacity (ide_drive_t *drive) | |
549 | { | |
550 | struct hd_driveid *id = drive->id; | |
551 | /* | |
552 | * If this drive supports the Host Protected Area feature set, | |
553 | * then we may need to change our opinion about the drive's capacity. | |
554 | */ | |
555 | int hpa = idedisk_supports_hpa(id); | |
556 | ||
557 | if (idedisk_supports_lba48(id)) { | |
558 | /* drive speaks 48-bit LBA */ | |
559 | drive->select.b.lba = 1; | |
560 | drive->capacity64 = id->lba_capacity_2; | |
561 | if (hpa) | |
562 | idedisk_check_hpa(drive); | |
563 | } else if ((id->capability & 2) && lba_capacity_is_ok(id)) { | |
564 | /* drive speaks 28-bit LBA */ | |
565 | drive->select.b.lba = 1; | |
566 | drive->capacity64 = id->lba_capacity; | |
567 | if (hpa) | |
568 | idedisk_check_hpa(drive); | |
569 | } else { | |
570 | /* drive speaks boring old 28-bit CHS */ | |
571 | drive->capacity64 = drive->cyl * drive->head * drive->sect; | |
572 | } | |
573 | } | |
574 | ||
575 | static sector_t idedisk_capacity (ide_drive_t *drive) | |
576 | { | |
577 | return drive->capacity64 - drive->sect0; | |
578 | } | |
579 | ||
ecfd80e4 | 580 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
581 | static int smart_enable(ide_drive_t *drive) |
582 | { | |
583 | ide_task_t args; | |
584 | ||
585 | memset(&args, 0, sizeof(ide_task_t)); | |
586 | args.tfRegister[IDE_FEATURE_OFFSET] = SMART_ENABLE; | |
587 | args.tfRegister[IDE_LCYL_OFFSET] = SMART_LCYL_PASS; | |
588 | args.tfRegister[IDE_HCYL_OFFSET] = SMART_HCYL_PASS; | |
589 | args.tfRegister[IDE_COMMAND_OFFSET] = WIN_SMART; | |
590 | args.command_type = IDE_DRIVE_TASK_NO_DATA; | |
591 | args.handler = &task_no_data_intr; | |
592 | return ide_raw_taskfile(drive, &args, NULL); | |
593 | } | |
594 | ||
595 | static int get_smart_values(ide_drive_t *drive, u8 *buf) | |
596 | { | |
597 | ide_task_t args; | |
598 | ||
599 | memset(&args, 0, sizeof(ide_task_t)); | |
600 | args.tfRegister[IDE_FEATURE_OFFSET] = SMART_READ_VALUES; | |
601 | args.tfRegister[IDE_NSECTOR_OFFSET] = 0x01; | |
602 | args.tfRegister[IDE_LCYL_OFFSET] = SMART_LCYL_PASS; | |
603 | args.tfRegister[IDE_HCYL_OFFSET] = SMART_HCYL_PASS; | |
604 | args.tfRegister[IDE_COMMAND_OFFSET] = WIN_SMART; | |
605 | args.command_type = IDE_DRIVE_TASK_IN; | |
606 | args.data_phase = TASKFILE_IN; | |
607 | args.handler = &task_in_intr; | |
608 | (void) smart_enable(drive); | |
609 | return ide_raw_taskfile(drive, &args, buf); | |
610 | } | |
611 | ||
612 | static int get_smart_thresholds(ide_drive_t *drive, u8 *buf) | |
613 | { | |
614 | ide_task_t args; | |
615 | memset(&args, 0, sizeof(ide_task_t)); | |
616 | args.tfRegister[IDE_FEATURE_OFFSET] = SMART_READ_THRESHOLDS; | |
617 | args.tfRegister[IDE_NSECTOR_OFFSET] = 0x01; | |
618 | args.tfRegister[IDE_LCYL_OFFSET] = SMART_LCYL_PASS; | |
619 | args.tfRegister[IDE_HCYL_OFFSET] = SMART_HCYL_PASS; | |
620 | args.tfRegister[IDE_COMMAND_OFFSET] = WIN_SMART; | |
621 | args.command_type = IDE_DRIVE_TASK_IN; | |
622 | args.data_phase = TASKFILE_IN; | |
623 | args.handler = &task_in_intr; | |
624 | (void) smart_enable(drive); | |
625 | return ide_raw_taskfile(drive, &args, buf); | |
626 | } | |
627 | ||
628 | static int proc_idedisk_read_cache | |
629 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
630 | { | |
631 | ide_drive_t *drive = (ide_drive_t *) data; | |
632 | char *out = page; | |
633 | int len; | |
634 | ||
635 | if (drive->id_read) | |
636 | len = sprintf(out,"%i\n", drive->id->buf_size / 2); | |
637 | else | |
638 | len = sprintf(out,"(none)\n"); | |
639 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
640 | } | |
641 | ||
642 | static int proc_idedisk_read_capacity | |
643 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
644 | { | |
645 | ide_drive_t*drive = (ide_drive_t *)data; | |
646 | int len; | |
647 | ||
648 | len = sprintf(page,"%llu\n", (long long)idedisk_capacity(drive)); | |
649 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
650 | } | |
651 | ||
652 | static int proc_idedisk_read_smart_thresholds | |
653 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
654 | { | |
655 | ide_drive_t *drive = (ide_drive_t *)data; | |
656 | int len = 0, i = 0; | |
657 | ||
658 | if (!get_smart_thresholds(drive, page)) { | |
659 | unsigned short *val = (unsigned short *) page; | |
660 | char *out = ((char *)val) + (SECTOR_WORDS * 4); | |
661 | page = out; | |
662 | do { | |
663 | out += sprintf(out, "%04x%c", le16_to_cpu(*val), (++i & 7) ? ' ' : '\n'); | |
664 | val += 1; | |
665 | } while (i < (SECTOR_WORDS * 2)); | |
666 | len = out - page; | |
667 | } | |
668 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
669 | } | |
670 | ||
671 | static int proc_idedisk_read_smart_values | |
672 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
673 | { | |
674 | ide_drive_t *drive = (ide_drive_t *)data; | |
675 | int len = 0, i = 0; | |
676 | ||
677 | if (!get_smart_values(drive, page)) { | |
678 | unsigned short *val = (unsigned short *) page; | |
679 | char *out = ((char *)val) + (SECTOR_WORDS * 4); | |
680 | page = out; | |
681 | do { | |
682 | out += sprintf(out, "%04x%c", le16_to_cpu(*val), (++i & 7) ? ' ' : '\n'); | |
683 | val += 1; | |
684 | } while (i < (SECTOR_WORDS * 2)); | |
685 | len = out - page; | |
686 | } | |
687 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
688 | } | |
689 | ||
690 | static ide_proc_entry_t idedisk_proc[] = { | |
691 | { "cache", S_IFREG|S_IRUGO, proc_idedisk_read_cache, NULL }, | |
692 | { "capacity", S_IFREG|S_IRUGO, proc_idedisk_read_capacity, NULL }, | |
693 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, | |
694 | { "smart_values", S_IFREG|S_IRUSR, proc_idedisk_read_smart_values, NULL }, | |
695 | { "smart_thresholds", S_IFREG|S_IRUSR, proc_idedisk_read_smart_thresholds, NULL }, | |
696 | { NULL, 0, NULL, NULL } | |
697 | }; | |
ecfd80e4 | 698 | #endif /* CONFIG_IDE_PROC_FS */ |
1da177e4 | 699 | |
165125e1 | 700 | static void idedisk_prepare_flush(struct request_queue *q, struct request *rq) |
1da177e4 LT |
701 | { |
702 | ide_drive_t *drive = q->queuedata; | |
703 | ||
1da177e4 LT |
704 | memset(rq->cmd, 0, sizeof(rq->cmd)); |
705 | ||
706 | if (ide_id_has_flush_cache_ext(drive->id) && | |
707 | (drive->capacity64 >= (1UL << 28))) | |
708 | rq->cmd[0] = WIN_FLUSH_CACHE_EXT; | |
709 | else | |
710 | rq->cmd[0] = WIN_FLUSH_CACHE; | |
711 | ||
712 | ||
4aff5e23 JA |
713 | rq->cmd_type = REQ_TYPE_ATA_TASK; |
714 | rq->cmd_flags |= REQ_SOFTBARRIER; | |
1da177e4 | 715 | rq->buffer = rq->cmd; |
1da177e4 LT |
716 | } |
717 | ||
165125e1 | 718 | static int idedisk_issue_flush(struct request_queue *q, struct gendisk *disk, |
1da177e4 LT |
719 | sector_t *error_sector) |
720 | { | |
721 | ide_drive_t *drive = q->queuedata; | |
722 | struct request *rq; | |
723 | int ret; | |
724 | ||
725 | if (!drive->wcache) | |
726 | return 0; | |
727 | ||
728 | rq = blk_get_request(q, WRITE, __GFP_WAIT); | |
729 | ||
730 | idedisk_prepare_flush(q, rq); | |
731 | ||
994ca9a1 | 732 | ret = blk_execute_rq(q, disk, rq, 0); |
1da177e4 LT |
733 | |
734 | /* | |
735 | * if we failed and caller wants error offset, get it | |
736 | */ | |
737 | if (ret && error_sector) | |
738 | *error_sector = ide_get_error_location(drive, rq->cmd); | |
739 | ||
740 | blk_put_request(rq); | |
741 | return ret; | |
742 | } | |
743 | ||
744 | /* | |
745 | * This is tightly woven into the driver->do_special can not touch. | |
746 | * DON'T do it again until a total personality rewrite is committed. | |
747 | */ | |
748 | static int set_multcount(ide_drive_t *drive, int arg) | |
749 | { | |
750 | struct request rq; | |
751 | ||
1497943e BZ |
752 | if (arg < 0 || arg > drive->id->max_multsect) |
753 | return -EINVAL; | |
754 | ||
1da177e4 LT |
755 | if (drive->special.b.set_multmode) |
756 | return -EBUSY; | |
757 | ide_init_drive_cmd (&rq); | |
4aff5e23 | 758 | rq.cmd_type = REQ_TYPE_ATA_CMD; |
1da177e4 LT |
759 | drive->mult_req = arg; |
760 | drive->special.b.set_multmode = 1; | |
761 | (void) ide_do_drive_cmd (drive, &rq, ide_wait); | |
762 | return (drive->mult_count == arg) ? 0 : -EIO; | |
763 | } | |
764 | ||
765 | static int set_nowerr(ide_drive_t *drive, int arg) | |
766 | { | |
1497943e BZ |
767 | if (arg < 0 || arg > 1) |
768 | return -EINVAL; | |
769 | ||
1da177e4 LT |
770 | if (ide_spin_wait_hwgroup(drive)) |
771 | return -EBUSY; | |
772 | drive->nowerr = arg; | |
773 | drive->bad_wstat = arg ? BAD_R_STAT : BAD_W_STAT; | |
774 | spin_unlock_irq(&ide_lock); | |
775 | return 0; | |
776 | } | |
777 | ||
3e087b57 TH |
778 | static void update_ordered(ide_drive_t *drive) |
779 | { | |
780 | struct hd_driveid *id = drive->id; | |
781 | unsigned ordered = QUEUE_ORDERED_NONE; | |
782 | prepare_flush_fn *prep_fn = NULL; | |
783 | issue_flush_fn *issue_fn = NULL; | |
784 | ||
785 | if (drive->wcache) { | |
786 | unsigned long long capacity; | |
787 | int barrier; | |
788 | /* | |
789 | * We must avoid issuing commands a drive does not | |
790 | * understand or we may crash it. We check flush cache | |
791 | * is supported. We also check we have the LBA48 flush | |
792 | * cache if the drive capacity is too large. By this | |
793 | * time we have trimmed the drive capacity if LBA48 is | |
794 | * not available so we don't need to recheck that. | |
795 | */ | |
796 | capacity = idedisk_capacity(drive); | |
36193484 | 797 | barrier = ide_id_has_flush_cache(id) && !drive->noflush && |
3e087b57 TH |
798 | (drive->addressing == 0 || capacity <= (1ULL << 28) || |
799 | ide_id_has_flush_cache_ext(id)); | |
800 | ||
801 | printk(KERN_INFO "%s: cache flushes %ssupported\n", | |
f7ad836c | 802 | drive->name, barrier ? "" : "not "); |
3e087b57 TH |
803 | |
804 | if (barrier) { | |
805 | ordered = QUEUE_ORDERED_DRAIN_FLUSH; | |
806 | prep_fn = idedisk_prepare_flush; | |
807 | issue_fn = idedisk_issue_flush; | |
808 | } | |
809 | } else | |
810 | ordered = QUEUE_ORDERED_DRAIN; | |
811 | ||
812 | blk_queue_ordered(drive->queue, ordered, prep_fn); | |
813 | blk_queue_issue_flush_fn(drive->queue, issue_fn); | |
814 | } | |
815 | ||
1da177e4 LT |
816 | static int write_cache(ide_drive_t *drive, int arg) |
817 | { | |
818 | ide_task_t args; | |
3e087b57 | 819 | int err = 1; |
1da177e4 | 820 | |
1497943e BZ |
821 | if (arg < 0 || arg > 1) |
822 | return -EINVAL; | |
823 | ||
3e087b57 TH |
824 | if (ide_id_has_flush_cache(drive->id)) { |
825 | memset(&args, 0, sizeof(ide_task_t)); | |
826 | args.tfRegister[IDE_FEATURE_OFFSET] = (arg) ? | |
1da177e4 | 827 | SETFEATURES_EN_WCACHE : SETFEATURES_DIS_WCACHE; |
3e087b57 TH |
828 | args.tfRegister[IDE_COMMAND_OFFSET] = WIN_SETFEATURES; |
829 | args.command_type = IDE_DRIVE_TASK_NO_DATA; | |
830 | args.handler = &task_no_data_intr; | |
831 | err = ide_raw_taskfile(drive, &args, NULL); | |
832 | if (err == 0) | |
833 | drive->wcache = arg; | |
834 | } | |
1da177e4 | 835 | |
3e087b57 | 836 | update_ordered(drive); |
1da177e4 | 837 | |
3e087b57 | 838 | return err; |
1da177e4 LT |
839 | } |
840 | ||
841 | static int do_idedisk_flushcache (ide_drive_t *drive) | |
842 | { | |
843 | ide_task_t args; | |
844 | ||
845 | memset(&args, 0, sizeof(ide_task_t)); | |
846 | if (ide_id_has_flush_cache_ext(drive->id)) | |
847 | args.tfRegister[IDE_COMMAND_OFFSET] = WIN_FLUSH_CACHE_EXT; | |
848 | else | |
849 | args.tfRegister[IDE_COMMAND_OFFSET] = WIN_FLUSH_CACHE; | |
850 | args.command_type = IDE_DRIVE_TASK_NO_DATA; | |
851 | args.handler = &task_no_data_intr; | |
852 | return ide_raw_taskfile(drive, &args, NULL); | |
853 | } | |
854 | ||
855 | static int set_acoustic (ide_drive_t *drive, int arg) | |
856 | { | |
857 | ide_task_t args; | |
858 | ||
1497943e BZ |
859 | if (arg < 0 || arg > 254) |
860 | return -EINVAL; | |
861 | ||
1da177e4 LT |
862 | memset(&args, 0, sizeof(ide_task_t)); |
863 | args.tfRegister[IDE_FEATURE_OFFSET] = (arg) ? SETFEATURES_EN_AAM : | |
864 | SETFEATURES_DIS_AAM; | |
865 | args.tfRegister[IDE_NSECTOR_OFFSET] = arg; | |
866 | args.tfRegister[IDE_COMMAND_OFFSET] = WIN_SETFEATURES; | |
867 | args.command_type = IDE_DRIVE_TASK_NO_DATA; | |
868 | args.handler = &task_no_data_intr; | |
869 | ide_raw_taskfile(drive, &args, NULL); | |
870 | drive->acoustic = arg; | |
871 | return 0; | |
872 | } | |
873 | ||
874 | /* | |
875 | * drive->addressing: | |
876 | * 0: 28-bit | |
877 | * 1: 48-bit | |
878 | * 2: 48-bit capable doing 28-bit | |
879 | */ | |
880 | static int set_lba_addressing(ide_drive_t *drive, int arg) | |
881 | { | |
1497943e BZ |
882 | if (arg < 0 || arg > 2) |
883 | return -EINVAL; | |
884 | ||
1da177e4 LT |
885 | drive->addressing = 0; |
886 | ||
887 | if (HWIF(drive)->no_lba48) | |
888 | return 0; | |
889 | ||
890 | if (!idedisk_supports_lba48(drive->id)) | |
891 | return -EIO; | |
892 | drive->addressing = arg; | |
893 | return 0; | |
894 | } | |
895 | ||
7662d046 | 896 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
897 | static void idedisk_add_settings(ide_drive_t *drive) |
898 | { | |
899 | struct hd_driveid *id = drive->id; | |
900 | ||
1497943e BZ |
901 | ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, &drive->bios_cyl, NULL); |
902 | ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL); | |
903 | ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL); | |
904 | ide_add_setting(drive, "address", SETTING_RW, TYPE_BYTE, 0, 2, 1, 1, &drive->addressing, set_lba_addressing); | |
905 | ide_add_setting(drive, "bswap", SETTING_READ, TYPE_BYTE, 0, 1, 1, 1, &drive->bswap, NULL); | |
906 | ide_add_setting(drive, "multcount", SETTING_RW, TYPE_BYTE, 0, id->max_multsect, 1, 1, &drive->mult_count, set_multcount); | |
907 | ide_add_setting(drive, "nowerr", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->nowerr, set_nowerr); | |
908 | ide_add_setting(drive, "lun", SETTING_RW, TYPE_INT, 0, 7, 1, 1, &drive->lun, NULL); | |
909 | ide_add_setting(drive, "wcache", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->wcache, write_cache); | |
910 | ide_add_setting(drive, "acoustic", SETTING_RW, TYPE_BYTE, 0, 254, 1, 1, &drive->acoustic, set_acoustic); | |
911 | ide_add_setting(drive, "failures", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, &drive->failures, NULL); | |
912 | ide_add_setting(drive, "max_failures", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, &drive->max_failures, NULL); | |
1da177e4 | 913 | } |
7662d046 BZ |
914 | #else |
915 | static inline void idedisk_add_settings(ide_drive_t *drive) { ; } | |
916 | #endif | |
1da177e4 LT |
917 | |
918 | static void idedisk_setup (ide_drive_t *drive) | |
919 | { | |
920 | struct hd_driveid *id = drive->id; | |
921 | unsigned long long capacity; | |
1da177e4 LT |
922 | |
923 | idedisk_add_settings(drive); | |
924 | ||
925 | if (drive->id_read == 0) | |
926 | return; | |
927 | ||
98109337 | 928 | if (drive->removable) { |
1da177e4 LT |
929 | /* |
930 | * Removable disks (eg. SYQUEST); ignore 'WD' drives | |
931 | */ | |
932 | if (id->model[0] != 'W' || id->model[1] != 'D') { | |
933 | drive->doorlocking = 1; | |
934 | } | |
935 | } | |
936 | ||
937 | (void)set_lba_addressing(drive, 1); | |
938 | ||
939 | if (drive->addressing == 1) { | |
940 | ide_hwif_t *hwif = HWIF(drive); | |
941 | int max_s = 2048; | |
942 | ||
943 | if (max_s > hwif->rqsize) | |
944 | max_s = hwif->rqsize; | |
945 | ||
946 | blk_queue_max_sectors(drive->queue, max_s); | |
947 | } | |
948 | ||
949 | printk(KERN_INFO "%s: max request size: %dKiB\n", drive->name, drive->queue->max_sectors / 2); | |
950 | ||
951 | /* calculate drive capacity, and select LBA if possible */ | |
952 | init_idedisk_capacity (drive); | |
953 | ||
954 | /* limit drive capacity to 137GB if LBA48 cannot be used */ | |
955 | if (drive->addressing == 0 && drive->capacity64 > 1ULL << 28) { | |
956 | printk(KERN_WARNING "%s: cannot use LBA48 - full capacity " | |
957 | "%llu sectors (%llu MB)\n", | |
958 | drive->name, (unsigned long long)drive->capacity64, | |
959 | sectors_to_MB(drive->capacity64)); | |
960 | drive->capacity64 = 1ULL << 28; | |
961 | } | |
962 | ||
963 | if (drive->hwif->no_lba48_dma && drive->addressing) { | |
964 | if (drive->capacity64 > 1ULL << 28) { | |
965 | printk(KERN_INFO "%s: cannot use LBA48 DMA - PIO mode will" | |
966 | " be used for accessing sectors > %u\n", | |
967 | drive->name, 1 << 28); | |
968 | } else | |
969 | drive->addressing = 0; | |
970 | } | |
971 | ||
972 | /* | |
973 | * if possible, give fdisk access to more of the drive, | |
974 | * by correcting bios_cyls: | |
975 | */ | |
976 | capacity = idedisk_capacity (drive); | |
977 | if (!drive->forced_geom) { | |
978 | ||
979 | if (idedisk_supports_lba48(drive->id)) { | |
980 | /* compatibility */ | |
981 | drive->bios_sect = 63; | |
982 | drive->bios_head = 255; | |
983 | } | |
984 | ||
985 | if (drive->bios_sect && drive->bios_head) { | |
986 | unsigned int cap0 = capacity; /* truncate to 32 bits */ | |
987 | unsigned int cylsz, cyl; | |
988 | ||
989 | if (cap0 != capacity) | |
990 | drive->bios_cyl = 65535; | |
991 | else { | |
992 | cylsz = drive->bios_sect * drive->bios_head; | |
993 | cyl = cap0 / cylsz; | |
994 | if (cyl > 65535) | |
995 | cyl = 65535; | |
996 | if (cyl > drive->bios_cyl) | |
997 | drive->bios_cyl = cyl; | |
998 | } | |
999 | } | |
1000 | } | |
1001 | printk(KERN_INFO "%s: %llu sectors (%llu MB)", | |
1002 | drive->name, capacity, sectors_to_MB(capacity)); | |
1003 | ||
1004 | /* Only print cache size when it was specified */ | |
1005 | if (id->buf_size) | |
1006 | printk (" w/%dKiB Cache", id->buf_size/2); | |
1007 | ||
1008 | printk(", CHS=%d/%d/%d", | |
1009 | drive->bios_cyl, drive->bios_head, drive->bios_sect); | |
1010 | if (drive->using_dma) | |
1011 | ide_dma_verbose(drive); | |
1012 | printk("\n"); | |
1013 | ||
1da177e4 LT |
1014 | /* write cache enabled? */ |
1015 | if ((id->csfo & 1) || (id->cfs_enable_1 & (1 << 5))) | |
1016 | drive->wcache = 1; | |
1017 | ||
1018 | write_cache(drive, 1); | |
1da177e4 LT |
1019 | } |
1020 | ||
1021 | static void ide_cacheflush_p(ide_drive_t *drive) | |
1022 | { | |
1023 | if (!drive->wcache || !ide_id_has_flush_cache(drive->id)) | |
1024 | return; | |
1025 | ||
1026 | if (do_idedisk_flushcache(drive)) | |
1027 | printk(KERN_INFO "%s: wcache flush failed!\n", drive->name); | |
1028 | } | |
1029 | ||
4031bbe4 | 1030 | static void ide_disk_remove(ide_drive_t *drive) |
1da177e4 LT |
1031 | { |
1032 | struct ide_disk_obj *idkp = drive->driver_data; | |
1033 | struct gendisk *g = idkp->disk; | |
1034 | ||
7662d046 | 1035 | ide_proc_unregister_driver(drive, idkp->driver); |
8604affd | 1036 | |
1da177e4 LT |
1037 | del_gendisk(g); |
1038 | ||
d36fef6f BZ |
1039 | ide_cacheflush_p(drive); |
1040 | ||
1da177e4 | 1041 | ide_disk_put(idkp); |
1da177e4 LT |
1042 | } |
1043 | ||
1044 | static void ide_disk_release(struct kref *kref) | |
1045 | { | |
1046 | struct ide_disk_obj *idkp = to_ide_disk(kref); | |
1047 | ide_drive_t *drive = idkp->drive; | |
1048 | struct gendisk *g = idkp->disk; | |
1049 | ||
1050 | drive->driver_data = NULL; | |
1da177e4 LT |
1051 | g->private_data = NULL; |
1052 | put_disk(g); | |
1053 | kfree(idkp); | |
1054 | } | |
1055 | ||
4031bbe4 | 1056 | static int ide_disk_probe(ide_drive_t *drive); |
1da177e4 | 1057 | |
0d2157f7 LT |
1058 | /* |
1059 | * On HPA drives the capacity needs to be | |
1060 | * reinitilized on resume otherwise the disk | |
1061 | * can not be used and a hard reset is required | |
1062 | */ | |
1063 | static void ide_disk_resume(ide_drive_t *drive) | |
1064 | { | |
1065 | if (idedisk_supports_hpa(drive->id)) | |
1066 | init_idedisk_capacity(drive); | |
1067 | } | |
1068 | ||
4031bbe4 | 1069 | static void ide_device_shutdown(ide_drive_t *drive) |
1da177e4 | 1070 | { |
1da177e4 LT |
1071 | #ifdef CONFIG_ALPHA |
1072 | /* On Alpha, halt(8) doesn't actually turn the machine off, | |
1073 | it puts you into the sort of firmware monitor. Typically, | |
1074 | it's used to boot another kernel image, so it's not much | |
1075 | different from reboot(8). Therefore, we don't need to | |
1076 | spin down the disk in this case, especially since Alpha | |
1077 | firmware doesn't handle disks in standby mode properly. | |
1078 | On the other hand, it's reasonably safe to turn the power | |
1079 | off when the shutdown process reaches the firmware prompt, | |
1080 | as the firmware initialization takes rather long time - | |
1081 | at least 10 seconds, which should be sufficient for | |
1082 | the disk to expire its write cache. */ | |
1083 | if (system_state != SYSTEM_POWER_OFF) { | |
1084 | #else | |
1085 | if (system_state == SYSTEM_RESTART) { | |
1086 | #endif | |
1087 | ide_cacheflush_p(drive); | |
1088 | return; | |
1089 | } | |
1090 | ||
1091 | printk("Shutdown: %s\n", drive->name); | |
4031bbe4 | 1092 | drive->gendev.bus->suspend(&drive->gendev, PMSG_SUSPEND); |
1da177e4 LT |
1093 | } |
1094 | ||
1da177e4 | 1095 | static ide_driver_t idedisk_driver = { |
1da177e4 | 1096 | .gen_driver = { |
4ef3b8f4 | 1097 | .owner = THIS_MODULE, |
8604affd BZ |
1098 | .name = "ide-disk", |
1099 | .bus = &ide_bus_type, | |
1da177e4 | 1100 | }, |
4031bbe4 RK |
1101 | .probe = ide_disk_probe, |
1102 | .remove = ide_disk_remove, | |
0d2157f7 | 1103 | .resume = ide_disk_resume, |
4031bbe4 | 1104 | .shutdown = ide_device_shutdown, |
1da177e4 LT |
1105 | .version = IDEDISK_VERSION, |
1106 | .media = ide_disk, | |
1da177e4 | 1107 | .supports_dsc_overlap = 0, |
1da177e4 LT |
1108 | .do_request = ide_do_rw_disk, |
1109 | .end_request = ide_end_request, | |
1110 | .error = __ide_error, | |
1111 | .abort = __ide_abort, | |
7662d046 | 1112 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 1113 | .proc = idedisk_proc, |
7662d046 | 1114 | #endif |
1da177e4 LT |
1115 | }; |
1116 | ||
1117 | static int idedisk_open(struct inode *inode, struct file *filp) | |
1118 | { | |
1119 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1120 | struct ide_disk_obj *idkp; | |
1121 | ide_drive_t *drive; | |
1122 | ||
1123 | if (!(idkp = ide_disk_get(disk))) | |
1124 | return -ENXIO; | |
1125 | ||
1126 | drive = idkp->drive; | |
1127 | ||
c94964a4 BZ |
1128 | idkp->openers++; |
1129 | ||
1130 | if (drive->removable && idkp->openers == 1) { | |
1da177e4 LT |
1131 | ide_task_t args; |
1132 | memset(&args, 0, sizeof(ide_task_t)); | |
1133 | args.tfRegister[IDE_COMMAND_OFFSET] = WIN_DOORLOCK; | |
1134 | args.command_type = IDE_DRIVE_TASK_NO_DATA; | |
1135 | args.handler = &task_no_data_intr; | |
1136 | check_disk_change(inode->i_bdev); | |
1137 | /* | |
1138 | * Ignore the return code from door_lock, | |
1139 | * since the open() has already succeeded, | |
1140 | * and the door_lock is irrelevant at this point. | |
1141 | */ | |
1142 | if (drive->doorlocking && ide_raw_taskfile(drive, &args, NULL)) | |
1143 | drive->doorlocking = 0; | |
1144 | } | |
1145 | return 0; | |
1146 | } | |
1147 | ||
1148 | static int idedisk_release(struct inode *inode, struct file *filp) | |
1149 | { | |
1150 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1151 | struct ide_disk_obj *idkp = ide_disk_g(disk); | |
1152 | ide_drive_t *drive = idkp->drive; | |
1153 | ||
c94964a4 | 1154 | if (idkp->openers == 1) |
1da177e4 | 1155 | ide_cacheflush_p(drive); |
c94964a4 BZ |
1156 | |
1157 | if (drive->removable && idkp->openers == 1) { | |
1da177e4 LT |
1158 | ide_task_t args; |
1159 | memset(&args, 0, sizeof(ide_task_t)); | |
1160 | args.tfRegister[IDE_COMMAND_OFFSET] = WIN_DOORUNLOCK; | |
1161 | args.command_type = IDE_DRIVE_TASK_NO_DATA; | |
1162 | args.handler = &task_no_data_intr; | |
1163 | if (drive->doorlocking && ide_raw_taskfile(drive, &args, NULL)) | |
1164 | drive->doorlocking = 0; | |
1165 | } | |
c94964a4 BZ |
1166 | |
1167 | idkp->openers--; | |
1da177e4 LT |
1168 | |
1169 | ide_disk_put(idkp); | |
1170 | ||
1171 | return 0; | |
1172 | } | |
1173 | ||
a885c8c4 CH |
1174 | static int idedisk_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
1175 | { | |
1176 | struct ide_disk_obj *idkp = ide_disk_g(bdev->bd_disk); | |
1177 | ide_drive_t *drive = idkp->drive; | |
1178 | ||
1179 | geo->heads = drive->bios_head; | |
1180 | geo->sectors = drive->bios_sect; | |
1181 | geo->cylinders = (u16)drive->bios_cyl; /* truncate */ | |
1182 | return 0; | |
1183 | } | |
1184 | ||
1da177e4 LT |
1185 | static int idedisk_ioctl(struct inode *inode, struct file *file, |
1186 | unsigned int cmd, unsigned long arg) | |
1187 | { | |
1497943e | 1188 | unsigned long flags; |
1da177e4 LT |
1189 | struct block_device *bdev = inode->i_bdev; |
1190 | struct ide_disk_obj *idkp = ide_disk_g(bdev->bd_disk); | |
1497943e BZ |
1191 | ide_drive_t *drive = idkp->drive; |
1192 | int err, (*setfunc)(ide_drive_t *, int); | |
1193 | u8 *val; | |
1194 | ||
1195 | switch (cmd) { | |
1196 | case HDIO_GET_ADDRESS: val = &drive->addressing; goto read_val; | |
1197 | case HDIO_GET_MULTCOUNT: val = &drive->mult_count; goto read_val; | |
1198 | case HDIO_GET_NOWERR: val = &drive->nowerr; goto read_val; | |
1199 | case HDIO_GET_WCACHE: val = &drive->wcache; goto read_val; | |
1200 | case HDIO_GET_ACOUSTIC: val = &drive->acoustic; goto read_val; | |
1201 | case HDIO_SET_ADDRESS: setfunc = set_lba_addressing; goto set_val; | |
1202 | case HDIO_SET_MULTCOUNT: setfunc = set_multcount; goto set_val; | |
1203 | case HDIO_SET_NOWERR: setfunc = set_nowerr; goto set_val; | |
1204 | case HDIO_SET_WCACHE: setfunc = write_cache; goto set_val; | |
1205 | case HDIO_SET_ACOUSTIC: setfunc = set_acoustic; goto set_val; | |
1206 | } | |
1207 | ||
1208 | return generic_ide_ioctl(drive, file, bdev, cmd, arg); | |
1209 | ||
1210 | read_val: | |
f9383c42 | 1211 | mutex_lock(&ide_setting_mtx); |
1497943e BZ |
1212 | spin_lock_irqsave(&ide_lock, flags); |
1213 | err = *val; | |
1214 | spin_unlock_irqrestore(&ide_lock, flags); | |
f9383c42 | 1215 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
1216 | return err >= 0 ? put_user(err, (long __user *)arg) : err; |
1217 | ||
1218 | set_val: | |
1219 | if (bdev != bdev->bd_contains) | |
1220 | err = -EINVAL; | |
1221 | else { | |
1222 | if (!capable(CAP_SYS_ADMIN)) | |
1223 | err = -EACCES; | |
1224 | else { | |
f9383c42 | 1225 | mutex_lock(&ide_setting_mtx); |
1497943e | 1226 | err = setfunc(drive, arg); |
f9383c42 | 1227 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
1228 | } |
1229 | } | |
1230 | return err; | |
1da177e4 LT |
1231 | } |
1232 | ||
1233 | static int idedisk_media_changed(struct gendisk *disk) | |
1234 | { | |
1235 | struct ide_disk_obj *idkp = ide_disk_g(disk); | |
1236 | ide_drive_t *drive = idkp->drive; | |
1237 | ||
1238 | /* do not scan partitions twice if this is a removable device */ | |
1239 | if (drive->attach) { | |
1240 | drive->attach = 0; | |
1241 | return 0; | |
1242 | } | |
1243 | /* if removable, always assume it was changed */ | |
1244 | return drive->removable; | |
1245 | } | |
1246 | ||
1247 | static int idedisk_revalidate_disk(struct gendisk *disk) | |
1248 | { | |
1249 | struct ide_disk_obj *idkp = ide_disk_g(disk); | |
1250 | set_capacity(disk, idedisk_capacity(idkp->drive)); | |
1251 | return 0; | |
1252 | } | |
1253 | ||
1254 | static struct block_device_operations idedisk_ops = { | |
1255 | .owner = THIS_MODULE, | |
1256 | .open = idedisk_open, | |
1257 | .release = idedisk_release, | |
1258 | .ioctl = idedisk_ioctl, | |
a885c8c4 | 1259 | .getgeo = idedisk_getgeo, |
1da177e4 LT |
1260 | .media_changed = idedisk_media_changed, |
1261 | .revalidate_disk= idedisk_revalidate_disk | |
1262 | }; | |
1263 | ||
1264 | MODULE_DESCRIPTION("ATA DISK Driver"); | |
1265 | ||
4031bbe4 | 1266 | static int ide_disk_probe(ide_drive_t *drive) |
1da177e4 LT |
1267 | { |
1268 | struct ide_disk_obj *idkp; | |
1269 | struct gendisk *g; | |
1270 | ||
1271 | /* strstr("foo", "") is non-NULL */ | |
1272 | if (!strstr("ide-disk", drive->driver_req)) | |
1273 | goto failed; | |
1274 | if (!drive->present) | |
1275 | goto failed; | |
1276 | if (drive->media != ide_disk) | |
1277 | goto failed; | |
1278 | ||
f5e3c2fa | 1279 | idkp = kzalloc(sizeof(*idkp), GFP_KERNEL); |
1da177e4 LT |
1280 | if (!idkp) |
1281 | goto failed; | |
1282 | ||
1946089a | 1283 | g = alloc_disk_node(1 << PARTN_BITS, |
86b37860 | 1284 | hwif_to_node(drive->hwif)); |
1da177e4 LT |
1285 | if (!g) |
1286 | goto out_free_idkp; | |
1287 | ||
1288 | ide_init_disk(g, drive); | |
1289 | ||
7662d046 | 1290 | ide_proc_register_driver(drive, &idedisk_driver); |
1da177e4 | 1291 | |
1da177e4 LT |
1292 | kref_init(&idkp->kref); |
1293 | ||
1294 | idkp->drive = drive; | |
1295 | idkp->driver = &idedisk_driver; | |
1296 | idkp->disk = g; | |
1297 | ||
1298 | g->private_data = &idkp->driver; | |
1299 | ||
1300 | drive->driver_data = idkp; | |
1301 | ||
1da177e4 LT |
1302 | idedisk_setup(drive); |
1303 | if ((!drive->head || drive->head > 16) && !drive->select.b.lba) { | |
1304 | printk(KERN_ERR "%s: INVALID GEOMETRY: %d PHYSICAL HEADS?\n", | |
1305 | drive->name, drive->head); | |
1306 | drive->attach = 0; | |
1307 | } else | |
1308 | drive->attach = 1; | |
8604affd | 1309 | |
1da177e4 | 1310 | g->minors = 1 << PARTN_BITS; |
1da177e4 LT |
1311 | g->driverfs_dev = &drive->gendev; |
1312 | g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; | |
1313 | set_capacity(g, idedisk_capacity(drive)); | |
1314 | g->fops = &idedisk_ops; | |
1315 | add_disk(g); | |
1316 | return 0; | |
1317 | ||
1da177e4 LT |
1318 | out_free_idkp: |
1319 | kfree(idkp); | |
1320 | failed: | |
8604affd | 1321 | return -ENODEV; |
1da177e4 LT |
1322 | } |
1323 | ||
1324 | static void __exit idedisk_exit (void) | |
1325 | { | |
8604affd | 1326 | driver_unregister(&idedisk_driver.gen_driver); |
1da177e4 LT |
1327 | } |
1328 | ||
17514e8a | 1329 | static int __init idedisk_init(void) |
1da177e4 | 1330 | { |
8604affd | 1331 | return driver_register(&idedisk_driver.gen_driver); |
1da177e4 LT |
1332 | } |
1333 | ||
263756ec | 1334 | MODULE_ALIAS("ide:*m-disk*"); |
1da177e4 LT |
1335 | module_init(idedisk_init); |
1336 | module_exit(idedisk_exit); | |
1337 | MODULE_LICENSE("GPL"); |