Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
59bca8cc BZ |
2 | * Copyright (C) 2000-2002 Michael Cornwell <cornwell@acm.org> |
3 | * Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org> | |
4 | * Copyright (C) 2001-2002 Klaus Smolin | |
1da177e4 | 5 | * IBM Storage Technology Division |
59bca8cc | 6 | * Copyright (C) 2003-2004, 2007 Bartlomiej Zolnierkiewicz |
1da177e4 LT |
7 | * |
8 | * The big the bad and the ugly. | |
1da177e4 LT |
9 | */ |
10 | ||
1da177e4 LT |
11 | #include <linux/types.h> |
12 | #include <linux/string.h> | |
13 | #include <linux/kernel.h> | |
651c29a1 | 14 | #include <linux/sched.h> |
1da177e4 | 15 | #include <linux/interrupt.h> |
1da177e4 | 16 | #include <linux/errno.h> |
1da177e4 | 17 | #include <linux/slab.h> |
1da177e4 LT |
18 | #include <linux/delay.h> |
19 | #include <linux/hdreg.h> | |
20 | #include <linux/ide.h> | |
55c16a70 | 21 | #include <linux/scatterlist.h> |
1da177e4 | 22 | |
1da177e4 LT |
23 | #include <asm/uaccess.h> |
24 | #include <asm/io.h> | |
25 | ||
089c5c7e | 26 | void ide_tf_dump(const char *s, struct ide_taskfile *tf) |
9e42237f | 27 | { |
807e35d6 BZ |
28 | #ifdef DEBUG |
29 | printk("%s: tf: feat 0x%02x nsect 0x%02x lbal 0x%02x " | |
30 | "lbam 0x%02x lbah 0x%02x dev 0x%02x cmd 0x%02x\n", | |
089c5c7e | 31 | s, tf->feature, tf->nsect, tf->lbal, |
807e35d6 | 32 | tf->lbam, tf->lbah, tf->device, tf->command); |
6dd9b837 BZ |
33 | printk("%s: hob: nsect 0x%02x lbal 0x%02x " |
34 | "lbam 0x%02x lbah 0x%02x\n", | |
089c5c7e | 35 | s, tf->hob_nsect, tf->hob_lbal, |
6dd9b837 | 36 | tf->hob_lbam, tf->hob_lbah); |
807e35d6 | 37 | #endif |
089c5c7e BZ |
38 | } |
39 | ||
1da177e4 LT |
40 | int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf) |
41 | { | |
42 | ide_task_t args; | |
650d841d | 43 | |
1da177e4 | 44 | memset(&args, 0, sizeof(ide_task_t)); |
650d841d | 45 | args.tf.nsect = 0x01; |
1da177e4 | 46 | if (drive->media == ide_disk) |
aaaade3f | 47 | args.tf.command = ATA_CMD_ID_ATA; |
1da177e4 | 48 | else |
aaaade3f | 49 | args.tf.command = ATA_CMD_ID_ATAPI; |
657cc1a8 | 50 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
ac026ff2 | 51 | args.data_phase = TASKFILE_IN; |
ac026ff2 | 52 | return ide_raw_taskfile(drive, &args, buf, 1); |
1da177e4 LT |
53 | } |
54 | ||
1192e528 | 55 | static ide_startstop_t task_no_data_intr(ide_drive_t *); |
f6e29e35 BZ |
56 | static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *); |
57 | static ide_startstop_t task_in_intr(ide_drive_t *); | |
1192e528 | 58 | |
1da177e4 LT |
59 | ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task) |
60 | { | |
898ec223 | 61 | ide_hwif_t *hwif = drive->hwif; |
650d841d | 62 | struct ide_taskfile *tf = &task->tf; |
57d7366b | 63 | ide_handler_t *handler = NULL; |
374e042c | 64 | const struct ide_tp_ops *tp_ops = hwif->tp_ops; |
f37afdac | 65 | const struct ide_dma_ops *dma_ops = hwif->dma_ops; |
1da177e4 | 66 | |
1edee60e BZ |
67 | if (task->data_phase == TASKFILE_MULTI_IN || |
68 | task->data_phase == TASKFILE_MULTI_OUT) { | |
69 | if (!drive->mult_count) { | |
70 | printk(KERN_ERR "%s: multimode not set!\n", | |
71 | drive->name); | |
72 | return ide_stopped; | |
73 | } | |
74 | } | |
75 | ||
19710d25 BZ |
76 | if (task->ftf_flags & IDE_FTFLAG_FLAGGED) |
77 | task->ftf_flags |= IDE_FTFLAG_SET_IN_FLAGS; | |
1edee60e | 78 | |
d6ff9f64 BZ |
79 | memcpy(&hwif->task, task, sizeof(*task)); |
80 | ||
089c5c7e BZ |
81 | if ((task->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) { |
82 | ide_tf_dump(drive->name, tf); | |
374e042c | 83 | tp_ops->set_irq(hwif, 1); |
ed4af48f | 84 | SELECT_MASK(drive, 0); |
374e042c | 85 | tp_ops->tf_load(drive, task); |
089c5c7e | 86 | } |
1da177e4 | 87 | |
10d90157 BZ |
88 | switch (task->data_phase) { |
89 | case TASKFILE_MULTI_OUT: | |
90 | case TASKFILE_OUT: | |
374e042c | 91 | tp_ops->exec_command(hwif, tf->command); |
10d90157 BZ |
92 | ndelay(400); /* FIXME */ |
93 | return pre_task_out_intr(drive, task->rq); | |
94 | case TASKFILE_MULTI_IN: | |
95 | case TASKFILE_IN: | |
57d7366b | 96 | handler = task_in_intr; |
1192e528 | 97 | /* fall-through */ |
10d90157 | 98 | case TASKFILE_NO_DATA: |
57d7366b BZ |
99 | if (handler == NULL) |
100 | handler = task_no_data_intr; | |
57d7366b BZ |
101 | ide_execute_command(drive, tf->command, handler, |
102 | WAIT_WORSTCASE, NULL); | |
1da177e4 | 103 | return ide_started; |
10d90157 | 104 | default: |
97100fc8 | 105 | if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0 || |
e6830a86 | 106 | ide_build_sglist(drive, hwif->rq) == 0 || |
97100fc8 | 107 | dma_ops->dma_setup(drive)) |
10d90157 | 108 | return ide_stopped; |
5e37bdc0 BZ |
109 | dma_ops->dma_exec_cmd(drive, tf->command); |
110 | dma_ops->dma_start(drive); | |
74095a91 | 111 | return ide_started; |
1da177e4 | 112 | } |
1da177e4 | 113 | } |
f6e29e35 | 114 | EXPORT_SYMBOL_GPL(do_rw_taskfile); |
1da177e4 | 115 | |
1da177e4 | 116 | /* |
d6ff9f64 | 117 | * Handler for commands without a data phase |
1da177e4 | 118 | */ |
d6ff9f64 | 119 | static ide_startstop_t task_no_data_intr(ide_drive_t *drive) |
1da177e4 | 120 | { |
b73c7ee2 | 121 | ide_hwif_t *hwif = drive->hwif; |
d6ff9f64 BZ |
122 | ide_task_t *task = &hwif->task; |
123 | struct ide_taskfile *tf = &task->tf; | |
124 | int custom = (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) ? 1 : 0; | |
125 | int retries = (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) ? 5 : 1; | |
1da177e4 LT |
126 | u8 stat; |
127 | ||
90d2c6bc BZ |
128 | local_irq_enable_in_hardirq(); |
129 | ||
374e042c BZ |
130 | while (1) { |
131 | stat = hwif->tp_ops->read_status(hwif); | |
3a7d2484 | 132 | if ((stat & ATA_BUSY) == 0 || retries-- == 0) |
374e042c | 133 | break; |
1da177e4 | 134 | udelay(10); |
374e042c | 135 | }; |
1da177e4 | 136 | |
d6ff9f64 BZ |
137 | if (!OK_STAT(stat, ATA_DRDY, BAD_STAT)) { |
138 | if (custom && tf->command == ATA_CMD_SET_MULTI) { | |
139 | drive->mult_req = drive->mult_count = 0; | |
140 | drive->special.b.recalibrate = 1; | |
141 | (void)ide_dump_status(drive, __func__, stat); | |
142 | return ide_stopped; | |
143 | } else if (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) { | |
144 | if ((stat & (ATA_ERR | ATA_DRQ)) == 0) { | |
145 | ide_set_handler(drive, &task_no_data_intr, | |
146 | WAIT_WORSTCASE, NULL); | |
147 | return ide_started; | |
148 | } | |
149 | } | |
1da177e4 | 150 | return ide_error(drive, "task_no_data_intr", stat); |
d6ff9f64 | 151 | } |
c47137a9 | 152 | |
a09485df | 153 | if (custom && tf->command == ATA_CMD_IDLEIMMEDIATE) { |
4abdc6ee EO |
154 | hwif->tp_ops->tf_read(drive, task); |
155 | if (tf->lbal != 0xc4) { | |
156 | printk(KERN_ERR "%s: head unload failed!\n", | |
157 | drive->name); | |
158 | ide_tf_dump(drive->name, tf); | |
159 | } else | |
160 | drive->dev_flags |= IDE_DFLAG_PARKED; | |
a09485df | 161 | } else if (custom && tf->command == ATA_CMD_SET_MULTI) |
d6ff9f64 | 162 | drive->mult_count = drive->mult_req; |
1da177e4 | 163 | |
a09485df BZ |
164 | if (custom == 0 || tf->command == ATA_CMD_IDLEIMMEDIATE) { |
165 | struct request *rq = hwif->rq; | |
166 | u8 err = ide_read_error(drive); | |
167 | ||
168 | if (blk_pm_request(rq)) | |
169 | ide_complete_pm_rq(drive, rq); | |
170 | else { | |
171 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) | |
172 | ide_complete_task(drive, task, stat, err); | |
173 | ide_complete_rq(drive, err); | |
174 | } | |
175 | } | |
176 | ||
1da177e4 LT |
177 | return ide_stopped; |
178 | } | |
179 | ||
da6f4c7f | 180 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
1da177e4 | 181 | { |
b73c7ee2 | 182 | ide_hwif_t *hwif = drive->hwif; |
b42fa133 | 183 | int retries; |
1da177e4 LT |
184 | u8 stat; |
185 | ||
186 | /* | |
f54feafa BZ |
187 | * Last sector was transfered, wait until device is ready. This can |
188 | * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms. | |
1da177e4 | 189 | */ |
f54feafa | 190 | for (retries = 0; retries < 1000; retries++) { |
374e042c | 191 | stat = hwif->tp_ops->read_status(hwif); |
c47137a9 | 192 | |
3a7d2484 | 193 | if (stat & ATA_BUSY) |
b42fa133 MY |
194 | udelay(10); |
195 | else | |
196 | break; | |
197 | } | |
1da177e4 | 198 | |
3a7d2484 | 199 | if (stat & ATA_BUSY) |
1da177e4 LT |
200 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
201 | ||
202 | return stat; | |
203 | } | |
204 | ||
92d3ab27 BZ |
205 | static void ide_pio_sector(ide_drive_t *drive, struct request *rq, |
206 | unsigned int write) | |
1da177e4 LT |
207 | { |
208 | ide_hwif_t *hwif = drive->hwif; | |
209 | struct scatterlist *sg = hwif->sg_table; | |
55c16a70 | 210 | struct scatterlist *cursg = hwif->cursg; |
1da177e4 LT |
211 | struct page *page; |
212 | #ifdef CONFIG_HIGHMEM | |
213 | unsigned long flags; | |
214 | #endif | |
215 | unsigned int offset; | |
216 | u8 *buf; | |
217 | ||
55c16a70 JA |
218 | cursg = hwif->cursg; |
219 | if (!cursg) { | |
220 | cursg = sg; | |
221 | hwif->cursg = sg; | |
222 | } | |
223 | ||
45711f1a | 224 | page = sg_page(cursg); |
55c16a70 | 225 | offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE; |
1da177e4 LT |
226 | |
227 | /* get the current page and offset */ | |
228 | page = nth_page(page, (offset >> PAGE_SHIFT)); | |
229 | offset %= PAGE_SIZE; | |
230 | ||
231 | #ifdef CONFIG_HIGHMEM | |
232 | local_irq_save(flags); | |
233 | #endif | |
234 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; | |
235 | ||
236 | hwif->nleft--; | |
237 | hwif->cursg_ofs++; | |
238 | ||
55c16a70 JA |
239 | if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) { |
240 | hwif->cursg = sg_next(hwif->cursg); | |
1da177e4 LT |
241 | hwif->cursg_ofs = 0; |
242 | } | |
243 | ||
244 | /* do the actual data transfer */ | |
245 | if (write) | |
374e042c | 246 | hwif->tp_ops->output_data(drive, rq, buf, SECTOR_SIZE); |
1da177e4 | 247 | else |
374e042c | 248 | hwif->tp_ops->input_data(drive, rq, buf, SECTOR_SIZE); |
1da177e4 LT |
249 | |
250 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); | |
251 | #ifdef CONFIG_HIGHMEM | |
252 | local_irq_restore(flags); | |
253 | #endif | |
254 | } | |
255 | ||
92d3ab27 BZ |
256 | static void ide_pio_multi(ide_drive_t *drive, struct request *rq, |
257 | unsigned int write) | |
1da177e4 LT |
258 | { |
259 | unsigned int nsect; | |
260 | ||
261 | nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count); | |
262 | while (nsect--) | |
92d3ab27 | 263 | ide_pio_sector(drive, rq, write); |
1da177e4 LT |
264 | } |
265 | ||
858119e1 | 266 | static void ide_pio_datablock(ide_drive_t *drive, struct request *rq, |
1da177e4 LT |
267 | unsigned int write) |
268 | { | |
e3d9a73a | 269 | ide_task_t *task = &drive->hwif->task; |
35cf2b94 TH |
270 | u8 saved_io_32bit = drive->io_32bit; |
271 | ||
b109f526 | 272 | if (blk_fs_request(rq)) |
1da177e4 LT |
273 | rq->errors = 0; |
274 | ||
e3d9a73a BZ |
275 | if (task->tf_flags & IDE_TFLAG_IO_16BIT) |
276 | drive->io_32bit = 0; | |
35cf2b94 | 277 | |
651c29a1 AM |
278 | touch_softlockup_watchdog(); |
279 | ||
e3d9a73a | 280 | switch (task->data_phase) { |
1da177e4 LT |
281 | case TASKFILE_MULTI_IN: |
282 | case TASKFILE_MULTI_OUT: | |
92d3ab27 | 283 | ide_pio_multi(drive, rq, write); |
1da177e4 LT |
284 | break; |
285 | default: | |
92d3ab27 | 286 | ide_pio_sector(drive, rq, write); |
1da177e4 LT |
287 | break; |
288 | } | |
35cf2b94 TH |
289 | |
290 | drive->io_32bit = saved_io_32bit; | |
1da177e4 LT |
291 | } |
292 | ||
293 | static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq, | |
294 | const char *s, u8 stat) | |
295 | { | |
b109f526 | 296 | if (blk_fs_request(rq)) { |
1da177e4 | 297 | ide_hwif_t *hwif = drive->hwif; |
e3d9a73a | 298 | ide_task_t *task = &hwif->task; |
1da177e4 LT |
299 | int sectors = hwif->nsect - hwif->nleft; |
300 | ||
e3d9a73a | 301 | switch (task->data_phase) { |
1da177e4 LT |
302 | case TASKFILE_IN: |
303 | if (hwif->nleft) | |
304 | break; | |
305 | /* fall through */ | |
306 | case TASKFILE_OUT: | |
307 | sectors--; | |
308 | break; | |
309 | case TASKFILE_MULTI_IN: | |
310 | if (hwif->nleft) | |
311 | break; | |
312 | /* fall through */ | |
313 | case TASKFILE_MULTI_OUT: | |
314 | sectors -= drive->mult_count; | |
315 | default: | |
316 | break; | |
317 | } | |
318 | ||
c152cc1a BZ |
319 | if (sectors > 0) |
320 | ide_end_request(drive, 1, sectors); | |
1da177e4 LT |
321 | } |
322 | return ide_error(drive, s, stat); | |
323 | } | |
324 | ||
4d7a984b | 325 | void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat) |
1da177e4 | 326 | { |
b109f526 | 327 | if (blk_fs_request(rq) == 0) { |
a09485df | 328 | ide_task_t *task = rq->special; |
64a57fe4 | 329 | u8 err = ide_read_error(drive); |
1da177e4 | 330 | |
a09485df BZ |
331 | if (task) |
332 | ide_complete_task(drive, task, stat, err); | |
333 | ide_complete_rq(drive, err); | |
4d7a984b | 334 | return; |
1da177e4 LT |
335 | } |
336 | ||
c152cc1a | 337 | ide_end_request(drive, 1, rq->nr_sectors); |
1da177e4 LT |
338 | } |
339 | ||
6c3c3158 LT |
340 | /* |
341 | * We got an interrupt on a task_in case, but no errors and no DRQ. | |
342 | * | |
343 | * It might be a spurious irq (shared irq), but it might be a | |
344 | * command that had no output. | |
345 | */ | |
346 | static ide_startstop_t task_in_unexpected(ide_drive_t *drive, struct request *rq, u8 stat) | |
347 | { | |
348 | /* Command all done? */ | |
3a7d2484 | 349 | if (OK_STAT(stat, ATA_DRDY, ATA_BUSY)) { |
6c3c3158 LT |
350 | task_end_request(drive, rq, stat); |
351 | return ide_stopped; | |
352 | } | |
353 | ||
354 | /* Assume it was a spurious irq */ | |
355 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
356 | return ide_started; | |
357 | } | |
358 | ||
1da177e4 LT |
359 | /* |
360 | * Handler for command with PIO data-in phase (Read/Read Multiple). | |
361 | */ | |
f6e29e35 | 362 | static ide_startstop_t task_in_intr(ide_drive_t *drive) |
1da177e4 LT |
363 | { |
364 | ide_hwif_t *hwif = drive->hwif; | |
b65fac32 | 365 | struct request *rq = hwif->rq; |
374e042c | 366 | u8 stat = hwif->tp_ops->read_status(hwif); |
1da177e4 | 367 | |
6c3c3158 | 368 | /* Error? */ |
3a7d2484 | 369 | if (stat & ATA_ERR) |
eb63963a | 370 | return task_error(drive, rq, __func__, stat); |
6c3c3158 LT |
371 | |
372 | /* Didn't want any data? Odd. */ | |
3a7d2484 | 373 | if ((stat & ATA_DRQ) == 0) |
6c3c3158 | 374 | return task_in_unexpected(drive, rq, stat); |
1da177e4 LT |
375 | |
376 | ide_pio_datablock(drive, rq, 0); | |
377 | ||
6c3c3158 | 378 | /* Are we done? Check status and finish transfer. */ |
1da177e4 LT |
379 | if (!hwif->nleft) { |
380 | stat = wait_drive_not_busy(drive); | |
73d7de0c | 381 | if (!OK_STAT(stat, 0, BAD_STAT)) |
eb63963a | 382 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
383 | task_end_request(drive, rq, stat); |
384 | return ide_stopped; | |
385 | } | |
386 | ||
387 | /* Still data left to transfer. */ | |
388 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
389 | ||
390 | return ide_started; | |
391 | } | |
1da177e4 LT |
392 | |
393 | /* | |
394 | * Handler for command with PIO data-out phase (Write/Write Multiple). | |
395 | */ | |
396 | static ide_startstop_t task_out_intr (ide_drive_t *drive) | |
397 | { | |
398 | ide_hwif_t *hwif = drive->hwif; | |
b65fac32 | 399 | struct request *rq = hwif->rq; |
374e042c | 400 | u8 stat = hwif->tp_ops->read_status(hwif); |
1da177e4 LT |
401 | |
402 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) | |
eb63963a | 403 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
404 | |
405 | /* Deal with unexpected ATA data phase. */ | |
3a7d2484 | 406 | if (((stat & ATA_DRQ) == 0) ^ !hwif->nleft) |
eb63963a | 407 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
408 | |
409 | if (!hwif->nleft) { | |
410 | task_end_request(drive, rq, stat); | |
411 | return ide_stopped; | |
412 | } | |
413 | ||
414 | /* Still data left to transfer. */ | |
415 | ide_pio_datablock(drive, rq, 1); | |
416 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
417 | ||
418 | return ide_started; | |
419 | } | |
420 | ||
f6e29e35 | 421 | static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq) |
1da177e4 | 422 | { |
e3d9a73a | 423 | ide_task_t *task = &drive->hwif->task; |
1da177e4 LT |
424 | ide_startstop_t startstop; |
425 | ||
3a7d2484 | 426 | if (ide_wait_stat(&startstop, drive, ATA_DRQ, |
1da177e4 LT |
427 | drive->bad_wstat, WAIT_DRQ)) { |
428 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", | |
c7db966b | 429 | drive->name, |
e3d9a73a | 430 | task->data_phase == TASKFILE_MULTI_OUT ? "MULT" : "", |
97100fc8 | 431 | (drive->dev_flags & IDE_DFLAG_LBA48) ? "_EXT" : ""); |
1da177e4 LT |
432 | return startstop; |
433 | } | |
434 | ||
97100fc8 | 435 | if ((drive->dev_flags & IDE_DFLAG_UNMASK) == 0) |
1da177e4 LT |
436 | local_irq_disable(); |
437 | ||
438 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
439 | ide_pio_datablock(drive, rq, 1); | |
440 | ||
441 | return ide_started; | |
442 | } | |
1da177e4 | 443 | |
ac026ff2 | 444 | int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect) |
1da177e4 | 445 | { |
154ed280 FT |
446 | struct request *rq; |
447 | int error; | |
1da177e4 | 448 | |
154ed280 FT |
449 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
450 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
451 | rq->buffer = buf; | |
1da177e4 LT |
452 | |
453 | /* | |
454 | * (ks) We transfer currently only whole sectors. | |
455 | * This is suffient for now. But, it would be great, | |
456 | * if we would find a solution to transfer any size. | |
457 | * To support special commands like READ LONG. | |
458 | */ | |
154ed280 FT |
459 | rq->hard_nr_sectors = rq->nr_sectors = nsect; |
460 | rq->hard_cur_sectors = rq->current_nr_sectors = nsect; | |
1da177e4 | 461 | |
ac026ff2 | 462 | if (task->tf_flags & IDE_TFLAG_WRITE) |
154ed280 | 463 | rq->cmd_flags |= REQ_RW; |
1da177e4 | 464 | |
154ed280 FT |
465 | rq->special = task; |
466 | task->rq = rq; | |
1da177e4 | 467 | |
154ed280 FT |
468 | error = blk_execute_rq(drive->queue, NULL, rq, 0); |
469 | blk_put_request(rq); | |
470 | ||
471 | return error; | |
1da177e4 LT |
472 | } |
473 | ||
1da177e4 LT |
474 | EXPORT_SYMBOL(ide_raw_taskfile); |
475 | ||
9a3c49be BZ |
476 | int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task) |
477 | { | |
ac026ff2 | 478 | task->data_phase = TASKFILE_NO_DATA; |
9a3c49be | 479 | |
ac026ff2 | 480 | return ide_raw_taskfile(drive, task, NULL, 0); |
9a3c49be BZ |
481 | } |
482 | EXPORT_SYMBOL_GPL(ide_no_data_taskfile); | |
483 | ||
26a5b040 | 484 | #ifdef CONFIG_IDE_TASK_IOCTL |
1da177e4 LT |
485 | int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
486 | { | |
487 | ide_task_request_t *req_task; | |
488 | ide_task_t args; | |
489 | u8 *outbuf = NULL; | |
490 | u8 *inbuf = NULL; | |
ac026ff2 | 491 | u8 *data_buf = NULL; |
1da177e4 LT |
492 | int err = 0; |
493 | int tasksize = sizeof(struct ide_task_request_s); | |
3a42bb22 AC |
494 | unsigned int taskin = 0; |
495 | unsigned int taskout = 0; | |
ac026ff2 | 496 | u16 nsect = 0; |
1da177e4 LT |
497 | char __user *buf = (char __user *)arg; |
498 | ||
499 | // printk("IDE Taskfile ...\n"); | |
500 | ||
f5e3c2fa | 501 | req_task = kzalloc(tasksize, GFP_KERNEL); |
1da177e4 | 502 | if (req_task == NULL) return -ENOMEM; |
1da177e4 LT |
503 | if (copy_from_user(req_task, buf, tasksize)) { |
504 | kfree(req_task); | |
505 | return -EFAULT; | |
506 | } | |
507 | ||
3a42bb22 AC |
508 | taskout = req_task->out_size; |
509 | taskin = req_task->in_size; | |
510 | ||
511 | if (taskin > 65536 || taskout > 65536) { | |
512 | err = -EINVAL; | |
513 | goto abort; | |
514 | } | |
1da177e4 LT |
515 | |
516 | if (taskout) { | |
517 | int outtotal = tasksize; | |
f5e3c2fa | 518 | outbuf = kzalloc(taskout, GFP_KERNEL); |
1da177e4 LT |
519 | if (outbuf == NULL) { |
520 | err = -ENOMEM; | |
521 | goto abort; | |
522 | } | |
1da177e4 LT |
523 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
524 | err = -EFAULT; | |
525 | goto abort; | |
526 | } | |
527 | } | |
528 | ||
529 | if (taskin) { | |
530 | int intotal = tasksize + taskout; | |
f5e3c2fa | 531 | inbuf = kzalloc(taskin, GFP_KERNEL); |
1da177e4 LT |
532 | if (inbuf == NULL) { |
533 | err = -ENOMEM; | |
534 | goto abort; | |
535 | } | |
1da177e4 LT |
536 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
537 | err = -EFAULT; | |
538 | goto abort; | |
539 | } | |
540 | } | |
541 | ||
542 | memset(&args, 0, sizeof(ide_task_t)); | |
1da177e4 | 543 | |
650d841d BZ |
544 | memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); |
545 | memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 BZ |
546 | |
547 | args.data_phase = req_task->data_phase; | |
1da177e4 | 548 | |
657cc1a8 BZ |
549 | args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE | |
550 | IDE_TFLAG_IN_TF; | |
97100fc8 | 551 | if (drive->dev_flags & IDE_DFLAG_LBA48) |
657cc1a8 | 552 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB); |
a3bbb9d8 | 553 | |
74095a91 | 554 | if (req_task->out_flags.all) { |
19710d25 | 555 | args.ftf_flags |= IDE_FTFLAG_FLAGGED; |
74095a91 BZ |
556 | |
557 | if (req_task->out_flags.b.data) | |
19710d25 | 558 | args.ftf_flags |= IDE_FTFLAG_OUT_DATA; |
74095a91 BZ |
559 | |
560 | if (req_task->out_flags.b.nsector_hob) | |
561 | args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; | |
562 | if (req_task->out_flags.b.sector_hob) | |
563 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; | |
564 | if (req_task->out_flags.b.lcyl_hob) | |
565 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; | |
566 | if (req_task->out_flags.b.hcyl_hob) | |
567 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; | |
568 | ||
569 | if (req_task->out_flags.b.error_feature) | |
570 | args.tf_flags |= IDE_TFLAG_OUT_FEATURE; | |
571 | if (req_task->out_flags.b.nsector) | |
572 | args.tf_flags |= IDE_TFLAG_OUT_NSECT; | |
573 | if (req_task->out_flags.b.sector) | |
574 | args.tf_flags |= IDE_TFLAG_OUT_LBAL; | |
575 | if (req_task->out_flags.b.lcyl) | |
576 | args.tf_flags |= IDE_TFLAG_OUT_LBAM; | |
577 | if (req_task->out_flags.b.hcyl) | |
578 | args.tf_flags |= IDE_TFLAG_OUT_LBAH; | |
a3bbb9d8 BZ |
579 | } else { |
580 | args.tf_flags |= IDE_TFLAG_OUT_TF; | |
581 | if (args.tf_flags & IDE_TFLAG_LBA48) | |
582 | args.tf_flags |= IDE_TFLAG_OUT_HOB; | |
74095a91 BZ |
583 | } |
584 | ||
866e2ec9 | 585 | if (req_task->in_flags.b.data) |
19710d25 | 586 | args.ftf_flags |= IDE_FTFLAG_IN_DATA; |
866e2ec9 | 587 | |
1da177e4 | 588 | switch(req_task->data_phase) { |
1da177e4 LT |
589 | case TASKFILE_MULTI_OUT: |
590 | if (!drive->mult_count) { | |
591 | /* (hs): give up if multcount is not set */ | |
592 | printk(KERN_ERR "%s: %s Multimode Write " \ | |
593 | "multcount is not set\n", | |
eb63963a | 594 | drive->name, __func__); |
1da177e4 LT |
595 | err = -EPERM; |
596 | goto abort; | |
597 | } | |
598 | /* fall through */ | |
599 | case TASKFILE_OUT: | |
ac026ff2 BZ |
600 | /* fall through */ |
601 | case TASKFILE_OUT_DMAQ: | |
602 | case TASKFILE_OUT_DMA: | |
603 | nsect = taskout / SECTOR_SIZE; | |
604 | data_buf = outbuf; | |
1da177e4 LT |
605 | break; |
606 | case TASKFILE_MULTI_IN: | |
607 | if (!drive->mult_count) { | |
608 | /* (hs): give up if multcount is not set */ | |
609 | printk(KERN_ERR "%s: %s Multimode Read failure " \ | |
610 | "multcount is not set\n", | |
eb63963a | 611 | drive->name, __func__); |
1da177e4 LT |
612 | err = -EPERM; |
613 | goto abort; | |
614 | } | |
615 | /* fall through */ | |
616 | case TASKFILE_IN: | |
ac026ff2 BZ |
617 | /* fall through */ |
618 | case TASKFILE_IN_DMAQ: | |
619 | case TASKFILE_IN_DMA: | |
620 | nsect = taskin / SECTOR_SIZE; | |
621 | data_buf = inbuf; | |
1da177e4 LT |
622 | break; |
623 | case TASKFILE_NO_DATA: | |
1da177e4 LT |
624 | break; |
625 | default: | |
626 | err = -EFAULT; | |
627 | goto abort; | |
628 | } | |
629 | ||
ac026ff2 BZ |
630 | if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) |
631 | nsect = 0; | |
632 | else if (!nsect) { | |
633 | nsect = (args.tf.hob_nsect << 8) | args.tf.nsect; | |
634 | ||
635 | if (!nsect) { | |
636 | printk(KERN_ERR "%s: in/out command without data\n", | |
637 | drive->name); | |
638 | err = -EFAULT; | |
639 | goto abort; | |
640 | } | |
641 | } | |
642 | ||
643 | if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) | |
644 | args.tf_flags |= IDE_TFLAG_WRITE; | |
645 | ||
646 | err = ide_raw_taskfile(drive, &args, data_buf, nsect); | |
647 | ||
650d841d BZ |
648 | memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2); |
649 | memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 | 650 | |
19710d25 | 651 | if ((args.ftf_flags & IDE_FTFLAG_SET_IN_FLAGS) && |
866e2ec9 BZ |
652 | req_task->in_flags.all == 0) { |
653 | req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; | |
97100fc8 | 654 | if (drive->dev_flags & IDE_DFLAG_LBA48) |
866e2ec9 BZ |
655 | req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); |
656 | } | |
1da177e4 LT |
657 | |
658 | if (copy_to_user(buf, req_task, tasksize)) { | |
659 | err = -EFAULT; | |
660 | goto abort; | |
661 | } | |
662 | if (taskout) { | |
663 | int outtotal = tasksize; | |
664 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { | |
665 | err = -EFAULT; | |
666 | goto abort; | |
667 | } | |
668 | } | |
669 | if (taskin) { | |
670 | int intotal = tasksize + taskout; | |
671 | if (copy_to_user(buf + intotal, inbuf, taskin)) { | |
672 | err = -EFAULT; | |
673 | goto abort; | |
674 | } | |
675 | } | |
676 | abort: | |
677 | kfree(req_task); | |
6044ec88 JJ |
678 | kfree(outbuf); |
679 | kfree(inbuf); | |
1da177e4 LT |
680 | |
681 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); | |
682 | ||
1da177e4 LT |
683 | return err; |
684 | } | |
26a5b040 | 685 | #endif |