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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 | 149 | return ide_error(drive, "task_no_data_intr", stat); |
d6ff9f64 | 150 | } |
c47137a9 | 151 | |
a09485df | 152 | if (custom && tf->command == ATA_CMD_IDLEIMMEDIATE) { |
4abdc6ee EO |
153 | hwif->tp_ops->tf_read(drive, task); |
154 | if (tf->lbal != 0xc4) { | |
155 | printk(KERN_ERR "%s: head unload failed!\n", | |
156 | drive->name); | |
157 | ide_tf_dump(drive->name, tf); | |
158 | } else | |
159 | drive->dev_flags |= IDE_DFLAG_PARKED; | |
a09485df | 160 | } else if (custom && tf->command == ATA_CMD_SET_MULTI) |
d6ff9f64 | 161 | drive->mult_count = drive->mult_req; |
1da177e4 | 162 | |
a09485df BZ |
163 | if (custom == 0 || tf->command == ATA_CMD_IDLEIMMEDIATE) { |
164 | struct request *rq = hwif->rq; | |
165 | u8 err = ide_read_error(drive); | |
166 | ||
167 | if (blk_pm_request(rq)) | |
168 | ide_complete_pm_rq(drive, rq); | |
169 | else { | |
170 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) | |
171 | ide_complete_task(drive, task, stat, err); | |
172 | ide_complete_rq(drive, err); | |
173 | } | |
174 | } | |
175 | ||
1da177e4 LT |
176 | return ide_stopped; |
177 | } | |
178 | ||
da6f4c7f | 179 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
1da177e4 | 180 | { |
b73c7ee2 | 181 | ide_hwif_t *hwif = drive->hwif; |
b42fa133 | 182 | int retries; |
1da177e4 LT |
183 | u8 stat; |
184 | ||
185 | /* | |
f54feafa BZ |
186 | * Last sector was transfered, wait until device is ready. This can |
187 | * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms. | |
1da177e4 | 188 | */ |
f54feafa | 189 | for (retries = 0; retries < 1000; retries++) { |
374e042c | 190 | stat = hwif->tp_ops->read_status(hwif); |
c47137a9 | 191 | |
3a7d2484 | 192 | if (stat & ATA_BUSY) |
b42fa133 MY |
193 | udelay(10); |
194 | else | |
195 | break; | |
196 | } | |
1da177e4 | 197 | |
3a7d2484 | 198 | if (stat & ATA_BUSY) |
1da177e4 LT |
199 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
200 | ||
201 | return stat; | |
202 | } | |
203 | ||
92d3ab27 BZ |
204 | static void ide_pio_sector(ide_drive_t *drive, struct request *rq, |
205 | unsigned int write) | |
1da177e4 LT |
206 | { |
207 | ide_hwif_t *hwif = drive->hwif; | |
208 | struct scatterlist *sg = hwif->sg_table; | |
55c16a70 | 209 | struct scatterlist *cursg = hwif->cursg; |
1da177e4 LT |
210 | struct page *page; |
211 | #ifdef CONFIG_HIGHMEM | |
212 | unsigned long flags; | |
213 | #endif | |
214 | unsigned int offset; | |
215 | u8 *buf; | |
216 | ||
55c16a70 JA |
217 | cursg = hwif->cursg; |
218 | if (!cursg) { | |
219 | cursg = sg; | |
220 | hwif->cursg = sg; | |
221 | } | |
222 | ||
45711f1a | 223 | page = sg_page(cursg); |
55c16a70 | 224 | offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE; |
1da177e4 LT |
225 | |
226 | /* get the current page and offset */ | |
227 | page = nth_page(page, (offset >> PAGE_SHIFT)); | |
228 | offset %= PAGE_SIZE; | |
229 | ||
230 | #ifdef CONFIG_HIGHMEM | |
231 | local_irq_save(flags); | |
232 | #endif | |
233 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; | |
234 | ||
235 | hwif->nleft--; | |
236 | hwif->cursg_ofs++; | |
237 | ||
55c16a70 JA |
238 | if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) { |
239 | hwif->cursg = sg_next(hwif->cursg); | |
1da177e4 LT |
240 | hwif->cursg_ofs = 0; |
241 | } | |
242 | ||
243 | /* do the actual data transfer */ | |
244 | if (write) | |
374e042c | 245 | hwif->tp_ops->output_data(drive, rq, buf, SECTOR_SIZE); |
1da177e4 | 246 | else |
374e042c | 247 | hwif->tp_ops->input_data(drive, rq, buf, SECTOR_SIZE); |
1da177e4 LT |
248 | |
249 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); | |
250 | #ifdef CONFIG_HIGHMEM | |
251 | local_irq_restore(flags); | |
252 | #endif | |
253 | } | |
254 | ||
92d3ab27 BZ |
255 | static void ide_pio_multi(ide_drive_t *drive, struct request *rq, |
256 | unsigned int write) | |
1da177e4 LT |
257 | { |
258 | unsigned int nsect; | |
259 | ||
260 | nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count); | |
261 | while (nsect--) | |
92d3ab27 | 262 | ide_pio_sector(drive, rq, write); |
1da177e4 LT |
263 | } |
264 | ||
858119e1 | 265 | static void ide_pio_datablock(ide_drive_t *drive, struct request *rq, |
1da177e4 LT |
266 | unsigned int write) |
267 | { | |
35cf2b94 TH |
268 | u8 saved_io_32bit = drive->io_32bit; |
269 | ||
1da177e4 LT |
270 | if (rq->bio) /* fs request */ |
271 | rq->errors = 0; | |
272 | ||
35cf2b94 TH |
273 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
274 | ide_task_t *task = rq->special; | |
275 | ||
276 | if (task->tf_flags & IDE_TFLAG_IO_16BIT) | |
277 | drive->io_32bit = 0; | |
278 | } | |
279 | ||
651c29a1 AM |
280 | touch_softlockup_watchdog(); |
281 | ||
1da177e4 LT |
282 | switch (drive->hwif->data_phase) { |
283 | case TASKFILE_MULTI_IN: | |
284 | case TASKFILE_MULTI_OUT: | |
92d3ab27 | 285 | ide_pio_multi(drive, rq, write); |
1da177e4 LT |
286 | break; |
287 | default: | |
92d3ab27 | 288 | ide_pio_sector(drive, rq, write); |
1da177e4 LT |
289 | break; |
290 | } | |
35cf2b94 TH |
291 | |
292 | drive->io_32bit = saved_io_32bit; | |
1da177e4 LT |
293 | } |
294 | ||
295 | static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq, | |
296 | const char *s, u8 stat) | |
297 | { | |
298 | if (rq->bio) { | |
299 | ide_hwif_t *hwif = drive->hwif; | |
300 | int sectors = hwif->nsect - hwif->nleft; | |
301 | ||
302 | switch (hwif->data_phase) { | |
303 | case TASKFILE_IN: | |
304 | if (hwif->nleft) | |
305 | break; | |
306 | /* fall through */ | |
307 | case TASKFILE_OUT: | |
308 | sectors--; | |
309 | break; | |
310 | case TASKFILE_MULTI_IN: | |
311 | if (hwif->nleft) | |
312 | break; | |
313 | /* fall through */ | |
314 | case TASKFILE_MULTI_OUT: | |
315 | sectors -= drive->mult_count; | |
316 | default: | |
317 | break; | |
318 | } | |
319 | ||
320 | if (sectors > 0) { | |
7f3c868b | 321 | struct ide_driver *drv; |
1da177e4 | 322 | |
7f3c868b | 323 | drv = *(struct ide_driver **)rq->rq_disk->private_data; |
1da177e4 LT |
324 | drv->end_request(drive, 1, sectors); |
325 | } | |
326 | } | |
327 | return ide_error(drive, s, stat); | |
328 | } | |
329 | ||
4d7a984b | 330 | void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat) |
1da177e4 | 331 | { |
4aff5e23 | 332 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
a09485df | 333 | ide_task_t *task = rq->special; |
64a57fe4 | 334 | u8 err = ide_read_error(drive); |
1da177e4 | 335 | |
a09485df BZ |
336 | if (task) |
337 | ide_complete_task(drive, task, stat, err); | |
338 | ide_complete_rq(drive, err); | |
4d7a984b | 339 | return; |
1da177e4 LT |
340 | } |
341 | ||
03731fbd | 342 | if (rq->rq_disk) { |
7f3c868b | 343 | struct ide_driver *drv; |
03731fbd | 344 | |
7f3c868b | 345 | drv = *(struct ide_driver **)rq->rq_disk->private_data;; |
79f21b84 | 346 | drv->end_request(drive, 1, rq->nr_sectors); |
03731fbd | 347 | } else |
79f21b84 | 348 | ide_end_request(drive, 1, rq->nr_sectors); |
1da177e4 LT |
349 | } |
350 | ||
6c3c3158 LT |
351 | /* |
352 | * We got an interrupt on a task_in case, but no errors and no DRQ. | |
353 | * | |
354 | * It might be a spurious irq (shared irq), but it might be a | |
355 | * command that had no output. | |
356 | */ | |
357 | static ide_startstop_t task_in_unexpected(ide_drive_t *drive, struct request *rq, u8 stat) | |
358 | { | |
359 | /* Command all done? */ | |
3a7d2484 | 360 | if (OK_STAT(stat, ATA_DRDY, ATA_BUSY)) { |
6c3c3158 LT |
361 | task_end_request(drive, rq, stat); |
362 | return ide_stopped; | |
363 | } | |
364 | ||
365 | /* Assume it was a spurious irq */ | |
366 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
367 | return ide_started; | |
368 | } | |
369 | ||
1da177e4 LT |
370 | /* |
371 | * Handler for command with PIO data-in phase (Read/Read Multiple). | |
372 | */ | |
f6e29e35 | 373 | static ide_startstop_t task_in_intr(ide_drive_t *drive) |
1da177e4 LT |
374 | { |
375 | ide_hwif_t *hwif = drive->hwif; | |
b65fac32 | 376 | struct request *rq = hwif->rq; |
374e042c | 377 | u8 stat = hwif->tp_ops->read_status(hwif); |
1da177e4 | 378 | |
6c3c3158 | 379 | /* Error? */ |
3a7d2484 | 380 | if (stat & ATA_ERR) |
eb63963a | 381 | return task_error(drive, rq, __func__, stat); |
6c3c3158 LT |
382 | |
383 | /* Didn't want any data? Odd. */ | |
3a7d2484 | 384 | if ((stat & ATA_DRQ) == 0) |
6c3c3158 | 385 | return task_in_unexpected(drive, rq, stat); |
1da177e4 LT |
386 | |
387 | ide_pio_datablock(drive, rq, 0); | |
388 | ||
6c3c3158 | 389 | /* Are we done? Check status and finish transfer. */ |
1da177e4 LT |
390 | if (!hwif->nleft) { |
391 | stat = wait_drive_not_busy(drive); | |
73d7de0c | 392 | if (!OK_STAT(stat, 0, BAD_STAT)) |
eb63963a | 393 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
394 | task_end_request(drive, rq, stat); |
395 | return ide_stopped; | |
396 | } | |
397 | ||
398 | /* Still data left to transfer. */ | |
399 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
400 | ||
401 | return ide_started; | |
402 | } | |
1da177e4 LT |
403 | |
404 | /* | |
405 | * Handler for command with PIO data-out phase (Write/Write Multiple). | |
406 | */ | |
407 | static ide_startstop_t task_out_intr (ide_drive_t *drive) | |
408 | { | |
409 | ide_hwif_t *hwif = drive->hwif; | |
b65fac32 | 410 | struct request *rq = hwif->rq; |
374e042c | 411 | u8 stat = hwif->tp_ops->read_status(hwif); |
1da177e4 LT |
412 | |
413 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) | |
eb63963a | 414 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
415 | |
416 | /* Deal with unexpected ATA data phase. */ | |
3a7d2484 | 417 | if (((stat & ATA_DRQ) == 0) ^ !hwif->nleft) |
eb63963a | 418 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
419 | |
420 | if (!hwif->nleft) { | |
421 | task_end_request(drive, rq, stat); | |
422 | return ide_stopped; | |
423 | } | |
424 | ||
425 | /* Still data left to transfer. */ | |
426 | ide_pio_datablock(drive, rq, 1); | |
427 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
428 | ||
429 | return ide_started; | |
430 | } | |
431 | ||
f6e29e35 | 432 | static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq) |
1da177e4 | 433 | { |
c7db966b | 434 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 LT |
435 | ide_startstop_t startstop; |
436 | ||
3a7d2484 | 437 | if (ide_wait_stat(&startstop, drive, ATA_DRQ, |
1da177e4 LT |
438 | drive->bad_wstat, WAIT_DRQ)) { |
439 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", | |
c7db966b BZ |
440 | drive->name, |
441 | hwif->data_phase == TASKFILE_MULTI_OUT ? "MULT" : "", | |
97100fc8 | 442 | (drive->dev_flags & IDE_DFLAG_LBA48) ? "_EXT" : ""); |
1da177e4 LT |
443 | return startstop; |
444 | } | |
445 | ||
97100fc8 | 446 | if ((drive->dev_flags & IDE_DFLAG_UNMASK) == 0) |
1da177e4 LT |
447 | local_irq_disable(); |
448 | ||
449 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
450 | ide_pio_datablock(drive, rq, 1); | |
451 | ||
452 | return ide_started; | |
453 | } | |
1da177e4 | 454 | |
ac026ff2 | 455 | int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect) |
1da177e4 | 456 | { |
154ed280 FT |
457 | struct request *rq; |
458 | int error; | |
1da177e4 | 459 | |
154ed280 FT |
460 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
461 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
462 | rq->buffer = buf; | |
1da177e4 LT |
463 | |
464 | /* | |
465 | * (ks) We transfer currently only whole sectors. | |
466 | * This is suffient for now. But, it would be great, | |
467 | * if we would find a solution to transfer any size. | |
468 | * To support special commands like READ LONG. | |
469 | */ | |
154ed280 FT |
470 | rq->hard_nr_sectors = rq->nr_sectors = nsect; |
471 | rq->hard_cur_sectors = rq->current_nr_sectors = nsect; | |
1da177e4 | 472 | |
ac026ff2 | 473 | if (task->tf_flags & IDE_TFLAG_WRITE) |
154ed280 | 474 | rq->cmd_flags |= REQ_RW; |
1da177e4 | 475 | |
154ed280 FT |
476 | rq->special = task; |
477 | task->rq = rq; | |
1da177e4 | 478 | |
154ed280 FT |
479 | error = blk_execute_rq(drive->queue, NULL, rq, 0); |
480 | blk_put_request(rq); | |
481 | ||
482 | return error; | |
1da177e4 LT |
483 | } |
484 | ||
1da177e4 LT |
485 | EXPORT_SYMBOL(ide_raw_taskfile); |
486 | ||
9a3c49be BZ |
487 | int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task) |
488 | { | |
ac026ff2 | 489 | task->data_phase = TASKFILE_NO_DATA; |
9a3c49be | 490 | |
ac026ff2 | 491 | return ide_raw_taskfile(drive, task, NULL, 0); |
9a3c49be BZ |
492 | } |
493 | EXPORT_SYMBOL_GPL(ide_no_data_taskfile); | |
494 | ||
26a5b040 | 495 | #ifdef CONFIG_IDE_TASK_IOCTL |
1da177e4 LT |
496 | int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
497 | { | |
498 | ide_task_request_t *req_task; | |
499 | ide_task_t args; | |
500 | u8 *outbuf = NULL; | |
501 | u8 *inbuf = NULL; | |
ac026ff2 | 502 | u8 *data_buf = NULL; |
1da177e4 LT |
503 | int err = 0; |
504 | int tasksize = sizeof(struct ide_task_request_s); | |
3a42bb22 AC |
505 | unsigned int taskin = 0; |
506 | unsigned int taskout = 0; | |
ac026ff2 | 507 | u16 nsect = 0; |
1da177e4 LT |
508 | char __user *buf = (char __user *)arg; |
509 | ||
510 | // printk("IDE Taskfile ...\n"); | |
511 | ||
f5e3c2fa | 512 | req_task = kzalloc(tasksize, GFP_KERNEL); |
1da177e4 | 513 | if (req_task == NULL) return -ENOMEM; |
1da177e4 LT |
514 | if (copy_from_user(req_task, buf, tasksize)) { |
515 | kfree(req_task); | |
516 | return -EFAULT; | |
517 | } | |
518 | ||
3a42bb22 AC |
519 | taskout = req_task->out_size; |
520 | taskin = req_task->in_size; | |
521 | ||
522 | if (taskin > 65536 || taskout > 65536) { | |
523 | err = -EINVAL; | |
524 | goto abort; | |
525 | } | |
1da177e4 LT |
526 | |
527 | if (taskout) { | |
528 | int outtotal = tasksize; | |
f5e3c2fa | 529 | outbuf = kzalloc(taskout, GFP_KERNEL); |
1da177e4 LT |
530 | if (outbuf == NULL) { |
531 | err = -ENOMEM; | |
532 | goto abort; | |
533 | } | |
1da177e4 LT |
534 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
535 | err = -EFAULT; | |
536 | goto abort; | |
537 | } | |
538 | } | |
539 | ||
540 | if (taskin) { | |
541 | int intotal = tasksize + taskout; | |
f5e3c2fa | 542 | inbuf = kzalloc(taskin, GFP_KERNEL); |
1da177e4 LT |
543 | if (inbuf == NULL) { |
544 | err = -ENOMEM; | |
545 | goto abort; | |
546 | } | |
1da177e4 LT |
547 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
548 | err = -EFAULT; | |
549 | goto abort; | |
550 | } | |
551 | } | |
552 | ||
553 | memset(&args, 0, sizeof(ide_task_t)); | |
1da177e4 | 554 | |
650d841d BZ |
555 | memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); |
556 | memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 BZ |
557 | |
558 | args.data_phase = req_task->data_phase; | |
1da177e4 | 559 | |
657cc1a8 BZ |
560 | args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE | |
561 | IDE_TFLAG_IN_TF; | |
97100fc8 | 562 | if (drive->dev_flags & IDE_DFLAG_LBA48) |
657cc1a8 | 563 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB); |
a3bbb9d8 | 564 | |
74095a91 | 565 | if (req_task->out_flags.all) { |
19710d25 | 566 | args.ftf_flags |= IDE_FTFLAG_FLAGGED; |
74095a91 BZ |
567 | |
568 | if (req_task->out_flags.b.data) | |
19710d25 | 569 | args.ftf_flags |= IDE_FTFLAG_OUT_DATA; |
74095a91 BZ |
570 | |
571 | if (req_task->out_flags.b.nsector_hob) | |
572 | args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; | |
573 | if (req_task->out_flags.b.sector_hob) | |
574 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; | |
575 | if (req_task->out_flags.b.lcyl_hob) | |
576 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; | |
577 | if (req_task->out_flags.b.hcyl_hob) | |
578 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; | |
579 | ||
580 | if (req_task->out_flags.b.error_feature) | |
581 | args.tf_flags |= IDE_TFLAG_OUT_FEATURE; | |
582 | if (req_task->out_flags.b.nsector) | |
583 | args.tf_flags |= IDE_TFLAG_OUT_NSECT; | |
584 | if (req_task->out_flags.b.sector) | |
585 | args.tf_flags |= IDE_TFLAG_OUT_LBAL; | |
586 | if (req_task->out_flags.b.lcyl) | |
587 | args.tf_flags |= IDE_TFLAG_OUT_LBAM; | |
588 | if (req_task->out_flags.b.hcyl) | |
589 | args.tf_flags |= IDE_TFLAG_OUT_LBAH; | |
a3bbb9d8 BZ |
590 | } else { |
591 | args.tf_flags |= IDE_TFLAG_OUT_TF; | |
592 | if (args.tf_flags & IDE_TFLAG_LBA48) | |
593 | args.tf_flags |= IDE_TFLAG_OUT_HOB; | |
74095a91 BZ |
594 | } |
595 | ||
866e2ec9 | 596 | if (req_task->in_flags.b.data) |
19710d25 | 597 | args.ftf_flags |= IDE_FTFLAG_IN_DATA; |
866e2ec9 | 598 | |
1da177e4 | 599 | switch(req_task->data_phase) { |
1da177e4 LT |
600 | case TASKFILE_MULTI_OUT: |
601 | if (!drive->mult_count) { | |
602 | /* (hs): give up if multcount is not set */ | |
603 | printk(KERN_ERR "%s: %s Multimode Write " \ | |
604 | "multcount is not set\n", | |
eb63963a | 605 | drive->name, __func__); |
1da177e4 LT |
606 | err = -EPERM; |
607 | goto abort; | |
608 | } | |
609 | /* fall through */ | |
610 | case TASKFILE_OUT: | |
ac026ff2 BZ |
611 | /* fall through */ |
612 | case TASKFILE_OUT_DMAQ: | |
613 | case TASKFILE_OUT_DMA: | |
614 | nsect = taskout / SECTOR_SIZE; | |
615 | data_buf = outbuf; | |
1da177e4 LT |
616 | break; |
617 | case TASKFILE_MULTI_IN: | |
618 | if (!drive->mult_count) { | |
619 | /* (hs): give up if multcount is not set */ | |
620 | printk(KERN_ERR "%s: %s Multimode Read failure " \ | |
621 | "multcount is not set\n", | |
eb63963a | 622 | drive->name, __func__); |
1da177e4 LT |
623 | err = -EPERM; |
624 | goto abort; | |
625 | } | |
626 | /* fall through */ | |
627 | case TASKFILE_IN: | |
ac026ff2 BZ |
628 | /* fall through */ |
629 | case TASKFILE_IN_DMAQ: | |
630 | case TASKFILE_IN_DMA: | |
631 | nsect = taskin / SECTOR_SIZE; | |
632 | data_buf = inbuf; | |
1da177e4 LT |
633 | break; |
634 | case TASKFILE_NO_DATA: | |
1da177e4 LT |
635 | break; |
636 | default: | |
637 | err = -EFAULT; | |
638 | goto abort; | |
639 | } | |
640 | ||
ac026ff2 BZ |
641 | if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) |
642 | nsect = 0; | |
643 | else if (!nsect) { | |
644 | nsect = (args.tf.hob_nsect << 8) | args.tf.nsect; | |
645 | ||
646 | if (!nsect) { | |
647 | printk(KERN_ERR "%s: in/out command without data\n", | |
648 | drive->name); | |
649 | err = -EFAULT; | |
650 | goto abort; | |
651 | } | |
652 | } | |
653 | ||
654 | if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) | |
655 | args.tf_flags |= IDE_TFLAG_WRITE; | |
656 | ||
657 | err = ide_raw_taskfile(drive, &args, data_buf, nsect); | |
658 | ||
650d841d BZ |
659 | memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2); |
660 | memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 | 661 | |
19710d25 | 662 | if ((args.ftf_flags & IDE_FTFLAG_SET_IN_FLAGS) && |
866e2ec9 BZ |
663 | req_task->in_flags.all == 0) { |
664 | req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; | |
97100fc8 | 665 | if (drive->dev_flags & IDE_DFLAG_LBA48) |
866e2ec9 BZ |
666 | req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); |
667 | } | |
1da177e4 LT |
668 | |
669 | if (copy_to_user(buf, req_task, tasksize)) { | |
670 | err = -EFAULT; | |
671 | goto abort; | |
672 | } | |
673 | if (taskout) { | |
674 | int outtotal = tasksize; | |
675 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { | |
676 | err = -EFAULT; | |
677 | goto abort; | |
678 | } | |
679 | } | |
680 | if (taskin) { | |
681 | int intotal = tasksize + taskout; | |
682 | if (copy_to_user(buf + intotal, inbuf, taskin)) { | |
683 | err = -EFAULT; | |
684 | goto abort; | |
685 | } | |
686 | } | |
687 | abort: | |
688 | kfree(req_task); | |
6044ec88 JJ |
689 | kfree(outbuf); |
690 | kfree(inbuf); | |
1da177e4 LT |
691 | |
692 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); | |
693 | ||
1da177e4 LT |
694 | return err; |
695 | } | |
26a5b040 | 696 | #endif |