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Commit | Line | Data |
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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 BZ |
105 | if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0 || |
106 | dma_ops->dma_setup(drive)) | |
10d90157 | 107 | return ide_stopped; |
5e37bdc0 BZ |
108 | dma_ops->dma_exec_cmd(drive, tf->command); |
109 | dma_ops->dma_start(drive); | |
74095a91 | 110 | return ide_started; |
1da177e4 | 111 | } |
1da177e4 | 112 | } |
f6e29e35 | 113 | EXPORT_SYMBOL_GPL(do_rw_taskfile); |
1da177e4 | 114 | |
1da177e4 | 115 | /* |
d6ff9f64 | 116 | * Handler for commands without a data phase |
1da177e4 | 117 | */ |
d6ff9f64 | 118 | static ide_startstop_t task_no_data_intr(ide_drive_t *drive) |
1da177e4 | 119 | { |
b73c7ee2 | 120 | ide_hwif_t *hwif = drive->hwif; |
d6ff9f64 BZ |
121 | ide_task_t *task = &hwif->task; |
122 | struct ide_taskfile *tf = &task->tf; | |
123 | int custom = (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) ? 1 : 0; | |
124 | int retries = (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) ? 5 : 1; | |
1da177e4 LT |
125 | u8 stat; |
126 | ||
90d2c6bc BZ |
127 | local_irq_enable_in_hardirq(); |
128 | ||
374e042c BZ |
129 | while (1) { |
130 | stat = hwif->tp_ops->read_status(hwif); | |
3a7d2484 | 131 | if ((stat & ATA_BUSY) == 0 || retries-- == 0) |
374e042c | 132 | break; |
1da177e4 | 133 | udelay(10); |
374e042c | 134 | }; |
1da177e4 | 135 | |
d6ff9f64 BZ |
136 | if (!OK_STAT(stat, ATA_DRDY, BAD_STAT)) { |
137 | if (custom && tf->command == ATA_CMD_SET_MULTI) { | |
138 | drive->mult_req = drive->mult_count = 0; | |
139 | drive->special.b.recalibrate = 1; | |
140 | (void)ide_dump_status(drive, __func__, stat); | |
141 | return ide_stopped; | |
142 | } else if (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) { | |
143 | if ((stat & (ATA_ERR | ATA_DRQ)) == 0) { | |
144 | ide_set_handler(drive, &task_no_data_intr, | |
145 | WAIT_WORSTCASE, NULL); | |
146 | return ide_started; | |
147 | } | |
148 | } | |
1da177e4 LT |
149 | return ide_error(drive, "task_no_data_intr", stat); |
150 | /* calls ide_end_drive_cmd */ | |
d6ff9f64 | 151 | } |
c47137a9 | 152 | |
d6ff9f64 | 153 | if (!custom) |
64a57fe4 | 154 | ide_end_drive_cmd(drive, stat, ide_read_error(drive)); |
4abdc6ee EO |
155 | else if (tf->command == ATA_CMD_IDLEIMMEDIATE) { |
156 | hwif->tp_ops->tf_read(drive, task); | |
157 | if (tf->lbal != 0xc4) { | |
158 | printk(KERN_ERR "%s: head unload failed!\n", | |
159 | drive->name); | |
160 | ide_tf_dump(drive->name, tf); | |
161 | } else | |
162 | drive->dev_flags |= IDE_DFLAG_PARKED; | |
163 | ide_end_drive_cmd(drive, stat, ide_read_error(drive)); | |
164 | } else if (tf->command == ATA_CMD_SET_MULTI) | |
d6ff9f64 | 165 | drive->mult_count = drive->mult_req; |
1da177e4 LT |
166 | |
167 | return ide_stopped; | |
168 | } | |
169 | ||
da6f4c7f | 170 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
1da177e4 | 171 | { |
b73c7ee2 | 172 | ide_hwif_t *hwif = drive->hwif; |
b42fa133 | 173 | int retries; |
1da177e4 LT |
174 | u8 stat; |
175 | ||
176 | /* | |
f54feafa BZ |
177 | * Last sector was transfered, wait until device is ready. This can |
178 | * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms. | |
1da177e4 | 179 | */ |
f54feafa | 180 | for (retries = 0; retries < 1000; retries++) { |
374e042c | 181 | stat = hwif->tp_ops->read_status(hwif); |
c47137a9 | 182 | |
3a7d2484 | 183 | if (stat & ATA_BUSY) |
b42fa133 MY |
184 | udelay(10); |
185 | else | |
186 | break; | |
187 | } | |
1da177e4 | 188 | |
3a7d2484 | 189 | if (stat & ATA_BUSY) |
1da177e4 LT |
190 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
191 | ||
192 | return stat; | |
193 | } | |
194 | ||
92d3ab27 BZ |
195 | static void ide_pio_sector(ide_drive_t *drive, struct request *rq, |
196 | unsigned int write) | |
1da177e4 LT |
197 | { |
198 | ide_hwif_t *hwif = drive->hwif; | |
199 | struct scatterlist *sg = hwif->sg_table; | |
55c16a70 | 200 | struct scatterlist *cursg = hwif->cursg; |
1da177e4 LT |
201 | struct page *page; |
202 | #ifdef CONFIG_HIGHMEM | |
203 | unsigned long flags; | |
204 | #endif | |
205 | unsigned int offset; | |
206 | u8 *buf; | |
207 | ||
55c16a70 JA |
208 | cursg = hwif->cursg; |
209 | if (!cursg) { | |
210 | cursg = sg; | |
211 | hwif->cursg = sg; | |
212 | } | |
213 | ||
45711f1a | 214 | page = sg_page(cursg); |
55c16a70 | 215 | offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE; |
1da177e4 LT |
216 | |
217 | /* get the current page and offset */ | |
218 | page = nth_page(page, (offset >> PAGE_SHIFT)); | |
219 | offset %= PAGE_SIZE; | |
220 | ||
221 | #ifdef CONFIG_HIGHMEM | |
222 | local_irq_save(flags); | |
223 | #endif | |
224 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; | |
225 | ||
226 | hwif->nleft--; | |
227 | hwif->cursg_ofs++; | |
228 | ||
55c16a70 JA |
229 | if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) { |
230 | hwif->cursg = sg_next(hwif->cursg); | |
1da177e4 LT |
231 | hwif->cursg_ofs = 0; |
232 | } | |
233 | ||
234 | /* do the actual data transfer */ | |
235 | if (write) | |
374e042c | 236 | hwif->tp_ops->output_data(drive, rq, buf, SECTOR_SIZE); |
1da177e4 | 237 | else |
374e042c | 238 | hwif->tp_ops->input_data(drive, rq, buf, SECTOR_SIZE); |
1da177e4 LT |
239 | |
240 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); | |
241 | #ifdef CONFIG_HIGHMEM | |
242 | local_irq_restore(flags); | |
243 | #endif | |
244 | } | |
245 | ||
92d3ab27 BZ |
246 | static void ide_pio_multi(ide_drive_t *drive, struct request *rq, |
247 | unsigned int write) | |
1da177e4 LT |
248 | { |
249 | unsigned int nsect; | |
250 | ||
251 | nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count); | |
252 | while (nsect--) | |
92d3ab27 | 253 | ide_pio_sector(drive, rq, write); |
1da177e4 LT |
254 | } |
255 | ||
858119e1 | 256 | static void ide_pio_datablock(ide_drive_t *drive, struct request *rq, |
1da177e4 LT |
257 | unsigned int write) |
258 | { | |
35cf2b94 TH |
259 | u8 saved_io_32bit = drive->io_32bit; |
260 | ||
1da177e4 LT |
261 | if (rq->bio) /* fs request */ |
262 | rq->errors = 0; | |
263 | ||
35cf2b94 TH |
264 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
265 | ide_task_t *task = rq->special; | |
266 | ||
267 | if (task->tf_flags & IDE_TFLAG_IO_16BIT) | |
268 | drive->io_32bit = 0; | |
269 | } | |
270 | ||
651c29a1 AM |
271 | touch_softlockup_watchdog(); |
272 | ||
1da177e4 LT |
273 | switch (drive->hwif->data_phase) { |
274 | case TASKFILE_MULTI_IN: | |
275 | case TASKFILE_MULTI_OUT: | |
92d3ab27 | 276 | ide_pio_multi(drive, rq, write); |
1da177e4 LT |
277 | break; |
278 | default: | |
92d3ab27 | 279 | ide_pio_sector(drive, rq, write); |
1da177e4 LT |
280 | break; |
281 | } | |
35cf2b94 TH |
282 | |
283 | drive->io_32bit = saved_io_32bit; | |
1da177e4 LT |
284 | } |
285 | ||
286 | static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq, | |
287 | const char *s, u8 stat) | |
288 | { | |
289 | if (rq->bio) { | |
290 | ide_hwif_t *hwif = drive->hwif; | |
291 | int sectors = hwif->nsect - hwif->nleft; | |
292 | ||
293 | switch (hwif->data_phase) { | |
294 | case TASKFILE_IN: | |
295 | if (hwif->nleft) | |
296 | break; | |
297 | /* fall through */ | |
298 | case TASKFILE_OUT: | |
299 | sectors--; | |
300 | break; | |
301 | case TASKFILE_MULTI_IN: | |
302 | if (hwif->nleft) | |
303 | break; | |
304 | /* fall through */ | |
305 | case TASKFILE_MULTI_OUT: | |
306 | sectors -= drive->mult_count; | |
307 | default: | |
308 | break; | |
309 | } | |
310 | ||
311 | if (sectors > 0) { | |
7f3c868b | 312 | struct ide_driver *drv; |
1da177e4 | 313 | |
7f3c868b | 314 | drv = *(struct ide_driver **)rq->rq_disk->private_data; |
1da177e4 LT |
315 | drv->end_request(drive, 1, sectors); |
316 | } | |
317 | } | |
318 | return ide_error(drive, s, stat); | |
319 | } | |
320 | ||
4d7a984b | 321 | void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat) |
1da177e4 | 322 | { |
4aff5e23 | 323 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
64a57fe4 | 324 | u8 err = ide_read_error(drive); |
1da177e4 | 325 | |
4d7a984b TH |
326 | ide_end_drive_cmd(drive, stat, err); |
327 | return; | |
1da177e4 LT |
328 | } |
329 | ||
03731fbd | 330 | if (rq->rq_disk) { |
7f3c868b | 331 | struct ide_driver *drv; |
03731fbd | 332 | |
7f3c868b | 333 | drv = *(struct ide_driver **)rq->rq_disk->private_data;; |
79f21b84 | 334 | drv->end_request(drive, 1, rq->nr_sectors); |
03731fbd | 335 | } else |
79f21b84 | 336 | ide_end_request(drive, 1, rq->nr_sectors); |
1da177e4 LT |
337 | } |
338 | ||
6c3c3158 LT |
339 | /* |
340 | * We got an interrupt on a task_in case, but no errors and no DRQ. | |
341 | * | |
342 | * It might be a spurious irq (shared irq), but it might be a | |
343 | * command that had no output. | |
344 | */ | |
345 | static ide_startstop_t task_in_unexpected(ide_drive_t *drive, struct request *rq, u8 stat) | |
346 | { | |
347 | /* Command all done? */ | |
3a7d2484 | 348 | if (OK_STAT(stat, ATA_DRDY, ATA_BUSY)) { |
6c3c3158 LT |
349 | task_end_request(drive, rq, stat); |
350 | return ide_stopped; | |
351 | } | |
352 | ||
353 | /* Assume it was a spurious irq */ | |
354 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
355 | return ide_started; | |
356 | } | |
357 | ||
1da177e4 LT |
358 | /* |
359 | * Handler for command with PIO data-in phase (Read/Read Multiple). | |
360 | */ | |
f6e29e35 | 361 | static ide_startstop_t task_in_intr(ide_drive_t *drive) |
1da177e4 LT |
362 | { |
363 | ide_hwif_t *hwif = drive->hwif; | |
b65fac32 | 364 | struct request *rq = hwif->rq; |
374e042c | 365 | u8 stat = hwif->tp_ops->read_status(hwif); |
1da177e4 | 366 | |
6c3c3158 | 367 | /* Error? */ |
3a7d2484 | 368 | if (stat & ATA_ERR) |
eb63963a | 369 | return task_error(drive, rq, __func__, stat); |
6c3c3158 LT |
370 | |
371 | /* Didn't want any data? Odd. */ | |
3a7d2484 | 372 | if ((stat & ATA_DRQ) == 0) |
6c3c3158 | 373 | return task_in_unexpected(drive, rq, stat); |
1da177e4 LT |
374 | |
375 | ide_pio_datablock(drive, rq, 0); | |
376 | ||
6c3c3158 | 377 | /* Are we done? Check status and finish transfer. */ |
1da177e4 LT |
378 | if (!hwif->nleft) { |
379 | stat = wait_drive_not_busy(drive); | |
73d7de0c | 380 | if (!OK_STAT(stat, 0, BAD_STAT)) |
eb63963a | 381 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
382 | task_end_request(drive, rq, stat); |
383 | return ide_stopped; | |
384 | } | |
385 | ||
386 | /* Still data left to transfer. */ | |
387 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
388 | ||
389 | return ide_started; | |
390 | } | |
1da177e4 LT |
391 | |
392 | /* | |
393 | * Handler for command with PIO data-out phase (Write/Write Multiple). | |
394 | */ | |
395 | static ide_startstop_t task_out_intr (ide_drive_t *drive) | |
396 | { | |
397 | ide_hwif_t *hwif = drive->hwif; | |
b65fac32 | 398 | struct request *rq = hwif->rq; |
374e042c | 399 | u8 stat = hwif->tp_ops->read_status(hwif); |
1da177e4 LT |
400 | |
401 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) | |
eb63963a | 402 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
403 | |
404 | /* Deal with unexpected ATA data phase. */ | |
3a7d2484 | 405 | if (((stat & ATA_DRQ) == 0) ^ !hwif->nleft) |
eb63963a | 406 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
407 | |
408 | if (!hwif->nleft) { | |
409 | task_end_request(drive, rq, stat); | |
410 | return ide_stopped; | |
411 | } | |
412 | ||
413 | /* Still data left to transfer. */ | |
414 | ide_pio_datablock(drive, rq, 1); | |
415 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
416 | ||
417 | return ide_started; | |
418 | } | |
419 | ||
f6e29e35 | 420 | static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq) |
1da177e4 | 421 | { |
c7db966b | 422 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 LT |
423 | ide_startstop_t startstop; |
424 | ||
3a7d2484 | 425 | if (ide_wait_stat(&startstop, drive, ATA_DRQ, |
1da177e4 LT |
426 | drive->bad_wstat, WAIT_DRQ)) { |
427 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", | |
c7db966b BZ |
428 | drive->name, |
429 | hwif->data_phase == TASKFILE_MULTI_OUT ? "MULT" : "", | |
97100fc8 | 430 | (drive->dev_flags & IDE_DFLAG_LBA48) ? "_EXT" : ""); |
1da177e4 LT |
431 | return startstop; |
432 | } | |
433 | ||
97100fc8 | 434 | if ((drive->dev_flags & IDE_DFLAG_UNMASK) == 0) |
1da177e4 LT |
435 | local_irq_disable(); |
436 | ||
437 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
438 | ide_pio_datablock(drive, rq, 1); | |
439 | ||
440 | return ide_started; | |
441 | } | |
1da177e4 | 442 | |
ac026ff2 | 443 | int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect) |
1da177e4 | 444 | { |
154ed280 FT |
445 | struct request *rq; |
446 | int error; | |
1da177e4 | 447 | |
154ed280 FT |
448 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
449 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
450 | rq->buffer = buf; | |
1da177e4 LT |
451 | |
452 | /* | |
453 | * (ks) We transfer currently only whole sectors. | |
454 | * This is suffient for now. But, it would be great, | |
455 | * if we would find a solution to transfer any size. | |
456 | * To support special commands like READ LONG. | |
457 | */ | |
154ed280 FT |
458 | rq->hard_nr_sectors = rq->nr_sectors = nsect; |
459 | rq->hard_cur_sectors = rq->current_nr_sectors = nsect; | |
1da177e4 | 460 | |
ac026ff2 | 461 | if (task->tf_flags & IDE_TFLAG_WRITE) |
154ed280 | 462 | rq->cmd_flags |= REQ_RW; |
1da177e4 | 463 | |
154ed280 FT |
464 | rq->special = task; |
465 | task->rq = rq; | |
1da177e4 | 466 | |
154ed280 FT |
467 | error = blk_execute_rq(drive->queue, NULL, rq, 0); |
468 | blk_put_request(rq); | |
469 | ||
470 | return error; | |
1da177e4 LT |
471 | } |
472 | ||
1da177e4 LT |
473 | EXPORT_SYMBOL(ide_raw_taskfile); |
474 | ||
9a3c49be BZ |
475 | int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task) |
476 | { | |
ac026ff2 | 477 | task->data_phase = TASKFILE_NO_DATA; |
9a3c49be | 478 | |
ac026ff2 | 479 | return ide_raw_taskfile(drive, task, NULL, 0); |
9a3c49be BZ |
480 | } |
481 | EXPORT_SYMBOL_GPL(ide_no_data_taskfile); | |
482 | ||
26a5b040 | 483 | #ifdef CONFIG_IDE_TASK_IOCTL |
1da177e4 LT |
484 | int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
485 | { | |
486 | ide_task_request_t *req_task; | |
487 | ide_task_t args; | |
488 | u8 *outbuf = NULL; | |
489 | u8 *inbuf = NULL; | |
ac026ff2 | 490 | u8 *data_buf = NULL; |
1da177e4 LT |
491 | int err = 0; |
492 | int tasksize = sizeof(struct ide_task_request_s); | |
3a42bb22 AC |
493 | unsigned int taskin = 0; |
494 | unsigned int taskout = 0; | |
ac026ff2 | 495 | u16 nsect = 0; |
1da177e4 LT |
496 | char __user *buf = (char __user *)arg; |
497 | ||
498 | // printk("IDE Taskfile ...\n"); | |
499 | ||
f5e3c2fa | 500 | req_task = kzalloc(tasksize, GFP_KERNEL); |
1da177e4 | 501 | if (req_task == NULL) return -ENOMEM; |
1da177e4 LT |
502 | if (copy_from_user(req_task, buf, tasksize)) { |
503 | kfree(req_task); | |
504 | return -EFAULT; | |
505 | } | |
506 | ||
3a42bb22 AC |
507 | taskout = req_task->out_size; |
508 | taskin = req_task->in_size; | |
509 | ||
510 | if (taskin > 65536 || taskout > 65536) { | |
511 | err = -EINVAL; | |
512 | goto abort; | |
513 | } | |
1da177e4 LT |
514 | |
515 | if (taskout) { | |
516 | int outtotal = tasksize; | |
f5e3c2fa | 517 | outbuf = kzalloc(taskout, GFP_KERNEL); |
1da177e4 LT |
518 | if (outbuf == NULL) { |
519 | err = -ENOMEM; | |
520 | goto abort; | |
521 | } | |
1da177e4 LT |
522 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
523 | err = -EFAULT; | |
524 | goto abort; | |
525 | } | |
526 | } | |
527 | ||
528 | if (taskin) { | |
529 | int intotal = tasksize + taskout; | |
f5e3c2fa | 530 | inbuf = kzalloc(taskin, GFP_KERNEL); |
1da177e4 LT |
531 | if (inbuf == NULL) { |
532 | err = -ENOMEM; | |
533 | goto abort; | |
534 | } | |
1da177e4 LT |
535 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
536 | err = -EFAULT; | |
537 | goto abort; | |
538 | } | |
539 | } | |
540 | ||
541 | memset(&args, 0, sizeof(ide_task_t)); | |
1da177e4 | 542 | |
650d841d BZ |
543 | memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); |
544 | memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 BZ |
545 | |
546 | args.data_phase = req_task->data_phase; | |
1da177e4 | 547 | |
657cc1a8 BZ |
548 | args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE | |
549 | IDE_TFLAG_IN_TF; | |
97100fc8 | 550 | if (drive->dev_flags & IDE_DFLAG_LBA48) |
657cc1a8 | 551 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB); |
a3bbb9d8 | 552 | |
74095a91 | 553 | if (req_task->out_flags.all) { |
19710d25 | 554 | args.ftf_flags |= IDE_FTFLAG_FLAGGED; |
74095a91 BZ |
555 | |
556 | if (req_task->out_flags.b.data) | |
19710d25 | 557 | args.ftf_flags |= IDE_FTFLAG_OUT_DATA; |
74095a91 BZ |
558 | |
559 | if (req_task->out_flags.b.nsector_hob) | |
560 | args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; | |
561 | if (req_task->out_flags.b.sector_hob) | |
562 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; | |
563 | if (req_task->out_flags.b.lcyl_hob) | |
564 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; | |
565 | if (req_task->out_flags.b.hcyl_hob) | |
566 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; | |
567 | ||
568 | if (req_task->out_flags.b.error_feature) | |
569 | args.tf_flags |= IDE_TFLAG_OUT_FEATURE; | |
570 | if (req_task->out_flags.b.nsector) | |
571 | args.tf_flags |= IDE_TFLAG_OUT_NSECT; | |
572 | if (req_task->out_flags.b.sector) | |
573 | args.tf_flags |= IDE_TFLAG_OUT_LBAL; | |
574 | if (req_task->out_flags.b.lcyl) | |
575 | args.tf_flags |= IDE_TFLAG_OUT_LBAM; | |
576 | if (req_task->out_flags.b.hcyl) | |
577 | args.tf_flags |= IDE_TFLAG_OUT_LBAH; | |
a3bbb9d8 BZ |
578 | } else { |
579 | args.tf_flags |= IDE_TFLAG_OUT_TF; | |
580 | if (args.tf_flags & IDE_TFLAG_LBA48) | |
581 | args.tf_flags |= IDE_TFLAG_OUT_HOB; | |
74095a91 BZ |
582 | } |
583 | ||
866e2ec9 | 584 | if (req_task->in_flags.b.data) |
19710d25 | 585 | args.ftf_flags |= IDE_FTFLAG_IN_DATA; |
866e2ec9 | 586 | |
1da177e4 | 587 | switch(req_task->data_phase) { |
1da177e4 LT |
588 | case TASKFILE_MULTI_OUT: |
589 | if (!drive->mult_count) { | |
590 | /* (hs): give up if multcount is not set */ | |
591 | printk(KERN_ERR "%s: %s Multimode Write " \ | |
592 | "multcount is not set\n", | |
eb63963a | 593 | drive->name, __func__); |
1da177e4 LT |
594 | err = -EPERM; |
595 | goto abort; | |
596 | } | |
597 | /* fall through */ | |
598 | case TASKFILE_OUT: | |
ac026ff2 BZ |
599 | /* fall through */ |
600 | case TASKFILE_OUT_DMAQ: | |
601 | case TASKFILE_OUT_DMA: | |
602 | nsect = taskout / SECTOR_SIZE; | |
603 | data_buf = outbuf; | |
1da177e4 LT |
604 | break; |
605 | case TASKFILE_MULTI_IN: | |
606 | if (!drive->mult_count) { | |
607 | /* (hs): give up if multcount is not set */ | |
608 | printk(KERN_ERR "%s: %s Multimode Read failure " \ | |
609 | "multcount is not set\n", | |
eb63963a | 610 | drive->name, __func__); |
1da177e4 LT |
611 | err = -EPERM; |
612 | goto abort; | |
613 | } | |
614 | /* fall through */ | |
615 | case TASKFILE_IN: | |
ac026ff2 BZ |
616 | /* fall through */ |
617 | case TASKFILE_IN_DMAQ: | |
618 | case TASKFILE_IN_DMA: | |
619 | nsect = taskin / SECTOR_SIZE; | |
620 | data_buf = inbuf; | |
1da177e4 LT |
621 | break; |
622 | case TASKFILE_NO_DATA: | |
1da177e4 LT |
623 | break; |
624 | default: | |
625 | err = -EFAULT; | |
626 | goto abort; | |
627 | } | |
628 | ||
ac026ff2 BZ |
629 | if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) |
630 | nsect = 0; | |
631 | else if (!nsect) { | |
632 | nsect = (args.tf.hob_nsect << 8) | args.tf.nsect; | |
633 | ||
634 | if (!nsect) { | |
635 | printk(KERN_ERR "%s: in/out command without data\n", | |
636 | drive->name); | |
637 | err = -EFAULT; | |
638 | goto abort; | |
639 | } | |
640 | } | |
641 | ||
642 | if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) | |
643 | args.tf_flags |= IDE_TFLAG_WRITE; | |
644 | ||
645 | err = ide_raw_taskfile(drive, &args, data_buf, nsect); | |
646 | ||
650d841d BZ |
647 | memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2); |
648 | memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 | 649 | |
19710d25 | 650 | if ((args.ftf_flags & IDE_FTFLAG_SET_IN_FLAGS) && |
866e2ec9 BZ |
651 | req_task->in_flags.all == 0) { |
652 | req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; | |
97100fc8 | 653 | if (drive->dev_flags & IDE_DFLAG_LBA48) |
866e2ec9 BZ |
654 | req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); |
655 | } | |
1da177e4 LT |
656 | |
657 | if (copy_to_user(buf, req_task, tasksize)) { | |
658 | err = -EFAULT; | |
659 | goto abort; | |
660 | } | |
661 | if (taskout) { | |
662 | int outtotal = tasksize; | |
663 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { | |
664 | err = -EFAULT; | |
665 | goto abort; | |
666 | } | |
667 | } | |
668 | if (taskin) { | |
669 | int intotal = tasksize + taskout; | |
670 | if (copy_to_user(buf + intotal, inbuf, taskin)) { | |
671 | err = -EFAULT; | |
672 | goto abort; | |
673 | } | |
674 | } | |
675 | abort: | |
676 | kfree(req_task); | |
6044ec88 JJ |
677 | kfree(outbuf); |
678 | kfree(inbuf); | |
1da177e4 LT |
679 | |
680 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); | |
681 | ||
1da177e4 LT |
682 | return err; |
683 | } | |
26a5b040 | 684 | #endif |