]>
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) |
650d841d | 47 | args.tf.command = WIN_IDENTIFY; |
1da177e4 | 48 | else |
650d841d | 49 | args.tf.command = WIN_PIDENTIFY; |
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 *); |
57d7366b BZ |
56 | static ide_startstop_t set_geometry_intr(ide_drive_t *); |
57 | static ide_startstop_t recal_intr(ide_drive_t *); | |
58 | static ide_startstop_t set_multmode_intr(ide_drive_t *); | |
f6e29e35 BZ |
59 | static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *); |
60 | static ide_startstop_t task_in_intr(ide_drive_t *); | |
1192e528 | 61 | |
1da177e4 LT |
62 | ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task) |
63 | { | |
64 | ide_hwif_t *hwif = HWIF(drive); | |
650d841d | 65 | struct ide_taskfile *tf = &task->tf; |
57d7366b | 66 | ide_handler_t *handler = NULL; |
f37afdac | 67 | const struct ide_dma_ops *dma_ops = hwif->dma_ops; |
1da177e4 | 68 | |
1edee60e BZ |
69 | if (task->data_phase == TASKFILE_MULTI_IN || |
70 | task->data_phase == TASKFILE_MULTI_OUT) { | |
71 | if (!drive->mult_count) { | |
72 | printk(KERN_ERR "%s: multimode not set!\n", | |
73 | drive->name); | |
74 | return ide_stopped; | |
75 | } | |
76 | } | |
77 | ||
78 | if (task->tf_flags & IDE_TFLAG_FLAGGED) | |
79 | task->tf_flags |= IDE_TFLAG_FLAGGED_SET_IN_FLAGS; | |
80 | ||
089c5c7e BZ |
81 | if ((task->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) { |
82 | ide_tf_dump(drive->name, tf); | |
6e6afb3b | 83 | hwif->set_irq(hwif, 1); |
ed4af48f | 84 | SELECT_MASK(drive, 0); |
94cd5b62 | 85 | hwif->tf_load(drive, task); |
089c5c7e | 86 | } |
1da177e4 | 87 | |
10d90157 BZ |
88 | switch (task->data_phase) { |
89 | case TASKFILE_MULTI_OUT: | |
90 | case TASKFILE_OUT: | |
c6dfa867 | 91 | hwif->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; | |
1192e528 | 101 | /* WIN_{SPECIFY,RESTORE,SETMULT} use custom handlers */ |
57d7366b BZ |
102 | if (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) { |
103 | switch (tf->command) { | |
104 | case WIN_SPECIFY: handler = set_geometry_intr; break; | |
105 | case WIN_RESTORE: handler = recal_intr; break; | |
106 | case WIN_SETMULT: handler = set_multmode_intr; break; | |
107 | } | |
108 | } | |
109 | ide_execute_command(drive, tf->command, handler, | |
110 | WAIT_WORSTCASE, NULL); | |
1da177e4 | 111 | return ide_started; |
10d90157 | 112 | default: |
07fe69d5 | 113 | if (drive->using_dma == 0 || dma_ops->dma_setup(drive)) |
10d90157 | 114 | return ide_stopped; |
5e37bdc0 BZ |
115 | dma_ops->dma_exec_cmd(drive, tf->command); |
116 | dma_ops->dma_start(drive); | |
74095a91 | 117 | return ide_started; |
1da177e4 | 118 | } |
1da177e4 | 119 | } |
f6e29e35 | 120 | EXPORT_SYMBOL_GPL(do_rw_taskfile); |
1da177e4 | 121 | |
1da177e4 LT |
122 | /* |
123 | * set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd. | |
124 | */ | |
57d7366b | 125 | static ide_startstop_t set_multmode_intr(ide_drive_t *drive) |
1da177e4 | 126 | { |
b73c7ee2 BZ |
127 | ide_hwif_t *hwif = drive->hwif; |
128 | u8 stat = hwif->read_status(hwif); | |
1da177e4 | 129 | |
c47137a9 | 130 | if (OK_STAT(stat, READY_STAT, BAD_STAT)) |
1da177e4 | 131 | drive->mult_count = drive->mult_req; |
c47137a9 | 132 | else { |
1da177e4 LT |
133 | drive->mult_req = drive->mult_count = 0; |
134 | drive->special.b.recalibrate = 1; | |
135 | (void) ide_dump_status(drive, "set_multmode", stat); | |
136 | } | |
137 | return ide_stopped; | |
138 | } | |
139 | ||
140 | /* | |
141 | * set_geometry_intr() is invoked on completion of a WIN_SPECIFY cmd. | |
142 | */ | |
57d7366b | 143 | static ide_startstop_t set_geometry_intr(ide_drive_t *drive) |
1da177e4 | 144 | { |
b73c7ee2 | 145 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 LT |
146 | int retries = 5; |
147 | u8 stat; | |
148 | ||
b73c7ee2 | 149 | while (((stat = hwif->read_status(hwif)) & BUSY_STAT) && retries--) |
1da177e4 LT |
150 | udelay(10); |
151 | ||
152 | if (OK_STAT(stat, READY_STAT, BAD_STAT)) | |
153 | return ide_stopped; | |
154 | ||
155 | if (stat & (ERR_STAT|DRQ_STAT)) | |
156 | return ide_error(drive, "set_geometry_intr", stat); | |
157 | ||
1da177e4 LT |
158 | ide_set_handler(drive, &set_geometry_intr, WAIT_WORSTCASE, NULL); |
159 | return ide_started; | |
160 | } | |
161 | ||
162 | /* | |
163 | * recal_intr() is invoked on completion of a WIN_RESTORE (recalibrate) cmd. | |
164 | */ | |
57d7366b | 165 | static ide_startstop_t recal_intr(ide_drive_t *drive) |
1da177e4 | 166 | { |
b73c7ee2 BZ |
167 | ide_hwif_t *hwif = drive->hwif; |
168 | u8 stat = hwif->read_status(hwif); | |
1da177e4 | 169 | |
c47137a9 | 170 | if (!OK_STAT(stat, READY_STAT, BAD_STAT)) |
1da177e4 LT |
171 | return ide_error(drive, "recal_intr", stat); |
172 | return ide_stopped; | |
173 | } | |
174 | ||
175 | /* | |
176 | * Handler for commands without a data phase | |
177 | */ | |
1192e528 | 178 | static ide_startstop_t task_no_data_intr(ide_drive_t *drive) |
1da177e4 | 179 | { |
b73c7ee2 BZ |
180 | ide_hwif_t *hwif = drive->hwif; |
181 | ide_task_t *args = hwif->hwgroup->rq->special; | |
1da177e4 LT |
182 | u8 stat; |
183 | ||
366c7f55 | 184 | local_irq_enable_in_hardirq(); |
b73c7ee2 | 185 | stat = hwif->read_status(hwif); |
c47137a9 BZ |
186 | |
187 | if (!OK_STAT(stat, READY_STAT, BAD_STAT)) | |
1da177e4 LT |
188 | return ide_error(drive, "task_no_data_intr", stat); |
189 | /* calls ide_end_drive_cmd */ | |
c47137a9 | 190 | |
1da177e4 | 191 | if (args) |
64a57fe4 | 192 | ide_end_drive_cmd(drive, stat, ide_read_error(drive)); |
1da177e4 LT |
193 | |
194 | return ide_stopped; | |
195 | } | |
196 | ||
da6f4c7f | 197 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
1da177e4 | 198 | { |
b73c7ee2 | 199 | ide_hwif_t *hwif = drive->hwif; |
b42fa133 | 200 | int retries; |
1da177e4 LT |
201 | u8 stat; |
202 | ||
203 | /* | |
f54feafa BZ |
204 | * Last sector was transfered, wait until device is ready. This can |
205 | * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms. | |
1da177e4 | 206 | */ |
f54feafa | 207 | for (retries = 0; retries < 1000; retries++) { |
b73c7ee2 | 208 | stat = hwif->read_status(hwif); |
c47137a9 BZ |
209 | |
210 | if (stat & BUSY_STAT) | |
b42fa133 MY |
211 | udelay(10); |
212 | else | |
213 | break; | |
214 | } | |
1da177e4 | 215 | |
b42fa133 | 216 | if (stat & BUSY_STAT) |
1da177e4 LT |
217 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
218 | ||
219 | return stat; | |
220 | } | |
221 | ||
92d3ab27 BZ |
222 | static void ide_pio_sector(ide_drive_t *drive, struct request *rq, |
223 | unsigned int write) | |
1da177e4 LT |
224 | { |
225 | ide_hwif_t *hwif = drive->hwif; | |
226 | struct scatterlist *sg = hwif->sg_table; | |
55c16a70 | 227 | struct scatterlist *cursg = hwif->cursg; |
1da177e4 LT |
228 | struct page *page; |
229 | #ifdef CONFIG_HIGHMEM | |
230 | unsigned long flags; | |
231 | #endif | |
232 | unsigned int offset; | |
233 | u8 *buf; | |
234 | ||
55c16a70 JA |
235 | cursg = hwif->cursg; |
236 | if (!cursg) { | |
237 | cursg = sg; | |
238 | hwif->cursg = sg; | |
239 | } | |
240 | ||
45711f1a | 241 | page = sg_page(cursg); |
55c16a70 | 242 | offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE; |
1da177e4 LT |
243 | |
244 | /* get the current page and offset */ | |
245 | page = nth_page(page, (offset >> PAGE_SHIFT)); | |
246 | offset %= PAGE_SIZE; | |
247 | ||
248 | #ifdef CONFIG_HIGHMEM | |
249 | local_irq_save(flags); | |
250 | #endif | |
251 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; | |
252 | ||
253 | hwif->nleft--; | |
254 | hwif->cursg_ofs++; | |
255 | ||
55c16a70 JA |
256 | if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) { |
257 | hwif->cursg = sg_next(hwif->cursg); | |
1da177e4 LT |
258 | hwif->cursg_ofs = 0; |
259 | } | |
260 | ||
261 | /* do the actual data transfer */ | |
262 | if (write) | |
9567b349 | 263 | hwif->output_data(drive, rq, buf, SECTOR_SIZE); |
1da177e4 | 264 | else |
9567b349 | 265 | hwif->input_data(drive, rq, buf, SECTOR_SIZE); |
1da177e4 LT |
266 | |
267 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); | |
268 | #ifdef CONFIG_HIGHMEM | |
269 | local_irq_restore(flags); | |
270 | #endif | |
271 | } | |
272 | ||
92d3ab27 BZ |
273 | static void ide_pio_multi(ide_drive_t *drive, struct request *rq, |
274 | unsigned int write) | |
1da177e4 LT |
275 | { |
276 | unsigned int nsect; | |
277 | ||
278 | nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count); | |
279 | while (nsect--) | |
92d3ab27 | 280 | ide_pio_sector(drive, rq, write); |
1da177e4 LT |
281 | } |
282 | ||
858119e1 | 283 | static void ide_pio_datablock(ide_drive_t *drive, struct request *rq, |
1da177e4 LT |
284 | unsigned int write) |
285 | { | |
35cf2b94 TH |
286 | u8 saved_io_32bit = drive->io_32bit; |
287 | ||
1da177e4 LT |
288 | if (rq->bio) /* fs request */ |
289 | rq->errors = 0; | |
290 | ||
35cf2b94 TH |
291 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
292 | ide_task_t *task = rq->special; | |
293 | ||
294 | if (task->tf_flags & IDE_TFLAG_IO_16BIT) | |
295 | drive->io_32bit = 0; | |
296 | } | |
297 | ||
651c29a1 AM |
298 | touch_softlockup_watchdog(); |
299 | ||
1da177e4 LT |
300 | switch (drive->hwif->data_phase) { |
301 | case TASKFILE_MULTI_IN: | |
302 | case TASKFILE_MULTI_OUT: | |
92d3ab27 | 303 | ide_pio_multi(drive, rq, write); |
1da177e4 LT |
304 | break; |
305 | default: | |
92d3ab27 | 306 | ide_pio_sector(drive, rq, write); |
1da177e4 LT |
307 | break; |
308 | } | |
35cf2b94 TH |
309 | |
310 | drive->io_32bit = saved_io_32bit; | |
1da177e4 LT |
311 | } |
312 | ||
313 | static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq, | |
314 | const char *s, u8 stat) | |
315 | { | |
316 | if (rq->bio) { | |
317 | ide_hwif_t *hwif = drive->hwif; | |
318 | int sectors = hwif->nsect - hwif->nleft; | |
319 | ||
320 | switch (hwif->data_phase) { | |
321 | case TASKFILE_IN: | |
322 | if (hwif->nleft) | |
323 | break; | |
324 | /* fall through */ | |
325 | case TASKFILE_OUT: | |
326 | sectors--; | |
327 | break; | |
328 | case TASKFILE_MULTI_IN: | |
329 | if (hwif->nleft) | |
330 | break; | |
331 | /* fall through */ | |
332 | case TASKFILE_MULTI_OUT: | |
333 | sectors -= drive->mult_count; | |
334 | default: | |
335 | break; | |
336 | } | |
337 | ||
338 | if (sectors > 0) { | |
339 | ide_driver_t *drv; | |
340 | ||
341 | drv = *(ide_driver_t **)rq->rq_disk->private_data; | |
342 | drv->end_request(drive, 1, sectors); | |
343 | } | |
344 | } | |
345 | return ide_error(drive, s, stat); | |
346 | } | |
347 | ||
4d7a984b | 348 | void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat) |
1da177e4 | 349 | { |
4aff5e23 | 350 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
64a57fe4 | 351 | u8 err = ide_read_error(drive); |
1da177e4 | 352 | |
4d7a984b TH |
353 | ide_end_drive_cmd(drive, stat, err); |
354 | return; | |
1da177e4 LT |
355 | } |
356 | ||
03731fbd RP |
357 | if (rq->rq_disk) { |
358 | ide_driver_t *drv; | |
359 | ||
360 | drv = *(ide_driver_t **)rq->rq_disk->private_data;; | |
79f21b84 | 361 | drv->end_request(drive, 1, rq->nr_sectors); |
03731fbd | 362 | } else |
79f21b84 | 363 | ide_end_request(drive, 1, rq->nr_sectors); |
1da177e4 LT |
364 | } |
365 | ||
6c3c3158 LT |
366 | /* |
367 | * We got an interrupt on a task_in case, but no errors and no DRQ. | |
368 | * | |
369 | * It might be a spurious irq (shared irq), but it might be a | |
370 | * command that had no output. | |
371 | */ | |
372 | static ide_startstop_t task_in_unexpected(ide_drive_t *drive, struct request *rq, u8 stat) | |
373 | { | |
374 | /* Command all done? */ | |
375 | if (OK_STAT(stat, READY_STAT, BUSY_STAT)) { | |
376 | task_end_request(drive, rq, stat); | |
377 | return ide_stopped; | |
378 | } | |
379 | ||
380 | /* Assume it was a spurious irq */ | |
381 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
382 | return ide_started; | |
383 | } | |
384 | ||
1da177e4 LT |
385 | /* |
386 | * Handler for command with PIO data-in phase (Read/Read Multiple). | |
387 | */ | |
f6e29e35 | 388 | static ide_startstop_t task_in_intr(ide_drive_t *drive) |
1da177e4 LT |
389 | { |
390 | ide_hwif_t *hwif = drive->hwif; | |
b73c7ee2 BZ |
391 | struct request *rq = hwif->hwgroup->rq; |
392 | u8 stat = hwif->read_status(hwif); | |
1da177e4 | 393 | |
6c3c3158 LT |
394 | /* Error? */ |
395 | if (stat & ERR_STAT) | |
eb63963a | 396 | return task_error(drive, rq, __func__, stat); |
6c3c3158 LT |
397 | |
398 | /* Didn't want any data? Odd. */ | |
399 | if (!(stat & DRQ_STAT)) | |
400 | return task_in_unexpected(drive, rq, stat); | |
1da177e4 LT |
401 | |
402 | ide_pio_datablock(drive, rq, 0); | |
403 | ||
6c3c3158 | 404 | /* Are we done? Check status and finish transfer. */ |
1da177e4 LT |
405 | if (!hwif->nleft) { |
406 | stat = wait_drive_not_busy(drive); | |
73d7de0c | 407 | if (!OK_STAT(stat, 0, BAD_STAT)) |
eb63963a | 408 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
409 | task_end_request(drive, rq, stat); |
410 | return ide_stopped; | |
411 | } | |
412 | ||
413 | /* Still data left to transfer. */ | |
414 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
415 | ||
416 | return ide_started; | |
417 | } | |
1da177e4 LT |
418 | |
419 | /* | |
420 | * Handler for command with PIO data-out phase (Write/Write Multiple). | |
421 | */ | |
422 | static ide_startstop_t task_out_intr (ide_drive_t *drive) | |
423 | { | |
424 | ide_hwif_t *hwif = drive->hwif; | |
425 | struct request *rq = HWGROUP(drive)->rq; | |
b73c7ee2 | 426 | u8 stat = hwif->read_status(hwif); |
1da177e4 LT |
427 | |
428 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) | |
eb63963a | 429 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
430 | |
431 | /* Deal with unexpected ATA data phase. */ | |
432 | if (((stat & DRQ_STAT) == 0) ^ !hwif->nleft) | |
eb63963a | 433 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
434 | |
435 | if (!hwif->nleft) { | |
436 | task_end_request(drive, rq, stat); | |
437 | return ide_stopped; | |
438 | } | |
439 | ||
440 | /* Still data left to transfer. */ | |
441 | ide_pio_datablock(drive, rq, 1); | |
442 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
443 | ||
444 | return ide_started; | |
445 | } | |
446 | ||
f6e29e35 | 447 | static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq) |
1da177e4 LT |
448 | { |
449 | ide_startstop_t startstop; | |
450 | ||
4906f3b4 | 451 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, |
1da177e4 LT |
452 | drive->bad_wstat, WAIT_DRQ)) { |
453 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", | |
454 | drive->name, | |
455 | drive->hwif->data_phase ? "MULT" : "", | |
456 | drive->addressing ? "_EXT" : ""); | |
457 | return startstop; | |
458 | } | |
459 | ||
460 | if (!drive->unmask) | |
461 | local_irq_disable(); | |
462 | ||
463 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
464 | ide_pio_datablock(drive, rq, 1); | |
465 | ||
466 | return ide_started; | |
467 | } | |
1da177e4 | 468 | |
ac026ff2 | 469 | int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect) |
1da177e4 | 470 | { |
154ed280 FT |
471 | struct request *rq; |
472 | int error; | |
1da177e4 | 473 | |
154ed280 FT |
474 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
475 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
476 | rq->buffer = buf; | |
1da177e4 LT |
477 | |
478 | /* | |
479 | * (ks) We transfer currently only whole sectors. | |
480 | * This is suffient for now. But, it would be great, | |
481 | * if we would find a solution to transfer any size. | |
482 | * To support special commands like READ LONG. | |
483 | */ | |
154ed280 FT |
484 | rq->hard_nr_sectors = rq->nr_sectors = nsect; |
485 | rq->hard_cur_sectors = rq->current_nr_sectors = nsect; | |
1da177e4 | 486 | |
ac026ff2 | 487 | if (task->tf_flags & IDE_TFLAG_WRITE) |
154ed280 | 488 | rq->cmd_flags |= REQ_RW; |
1da177e4 | 489 | |
154ed280 FT |
490 | rq->special = task; |
491 | task->rq = rq; | |
1da177e4 | 492 | |
154ed280 FT |
493 | error = blk_execute_rq(drive->queue, NULL, rq, 0); |
494 | blk_put_request(rq); | |
495 | ||
496 | return error; | |
1da177e4 LT |
497 | } |
498 | ||
1da177e4 LT |
499 | EXPORT_SYMBOL(ide_raw_taskfile); |
500 | ||
9a3c49be BZ |
501 | int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task) |
502 | { | |
ac026ff2 | 503 | task->data_phase = TASKFILE_NO_DATA; |
9a3c49be | 504 | |
ac026ff2 | 505 | return ide_raw_taskfile(drive, task, NULL, 0); |
9a3c49be BZ |
506 | } |
507 | EXPORT_SYMBOL_GPL(ide_no_data_taskfile); | |
508 | ||
26a5b040 | 509 | #ifdef CONFIG_IDE_TASK_IOCTL |
1da177e4 LT |
510 | int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
511 | { | |
512 | ide_task_request_t *req_task; | |
513 | ide_task_t args; | |
514 | u8 *outbuf = NULL; | |
515 | u8 *inbuf = NULL; | |
ac026ff2 | 516 | u8 *data_buf = NULL; |
1da177e4 LT |
517 | int err = 0; |
518 | int tasksize = sizeof(struct ide_task_request_s); | |
3a42bb22 AC |
519 | unsigned int taskin = 0; |
520 | unsigned int taskout = 0; | |
ac026ff2 | 521 | u16 nsect = 0; |
1da177e4 LT |
522 | char __user *buf = (char __user *)arg; |
523 | ||
524 | // printk("IDE Taskfile ...\n"); | |
525 | ||
f5e3c2fa | 526 | req_task = kzalloc(tasksize, GFP_KERNEL); |
1da177e4 | 527 | if (req_task == NULL) return -ENOMEM; |
1da177e4 LT |
528 | if (copy_from_user(req_task, buf, tasksize)) { |
529 | kfree(req_task); | |
530 | return -EFAULT; | |
531 | } | |
532 | ||
3a42bb22 AC |
533 | taskout = req_task->out_size; |
534 | taskin = req_task->in_size; | |
535 | ||
536 | if (taskin > 65536 || taskout > 65536) { | |
537 | err = -EINVAL; | |
538 | goto abort; | |
539 | } | |
1da177e4 LT |
540 | |
541 | if (taskout) { | |
542 | int outtotal = tasksize; | |
f5e3c2fa | 543 | outbuf = kzalloc(taskout, GFP_KERNEL); |
1da177e4 LT |
544 | if (outbuf == NULL) { |
545 | err = -ENOMEM; | |
546 | goto abort; | |
547 | } | |
1da177e4 LT |
548 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
549 | err = -EFAULT; | |
550 | goto abort; | |
551 | } | |
552 | } | |
553 | ||
554 | if (taskin) { | |
555 | int intotal = tasksize + taskout; | |
f5e3c2fa | 556 | inbuf = kzalloc(taskin, GFP_KERNEL); |
1da177e4 LT |
557 | if (inbuf == NULL) { |
558 | err = -ENOMEM; | |
559 | goto abort; | |
560 | } | |
1da177e4 LT |
561 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
562 | err = -EFAULT; | |
563 | goto abort; | |
564 | } | |
565 | } | |
566 | ||
567 | memset(&args, 0, sizeof(ide_task_t)); | |
1da177e4 | 568 | |
650d841d BZ |
569 | memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); |
570 | memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 BZ |
571 | |
572 | args.data_phase = req_task->data_phase; | |
1da177e4 | 573 | |
657cc1a8 BZ |
574 | args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE | |
575 | IDE_TFLAG_IN_TF; | |
a3bbb9d8 | 576 | if (drive->addressing == 1) |
657cc1a8 | 577 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB); |
a3bbb9d8 | 578 | |
74095a91 BZ |
579 | if (req_task->out_flags.all) { |
580 | args.tf_flags |= IDE_TFLAG_FLAGGED; | |
581 | ||
582 | if (req_task->out_flags.b.data) | |
583 | args.tf_flags |= IDE_TFLAG_OUT_DATA; | |
584 | ||
585 | if (req_task->out_flags.b.nsector_hob) | |
586 | args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; | |
587 | if (req_task->out_flags.b.sector_hob) | |
588 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; | |
589 | if (req_task->out_flags.b.lcyl_hob) | |
590 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; | |
591 | if (req_task->out_flags.b.hcyl_hob) | |
592 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; | |
593 | ||
594 | if (req_task->out_flags.b.error_feature) | |
595 | args.tf_flags |= IDE_TFLAG_OUT_FEATURE; | |
596 | if (req_task->out_flags.b.nsector) | |
597 | args.tf_flags |= IDE_TFLAG_OUT_NSECT; | |
598 | if (req_task->out_flags.b.sector) | |
599 | args.tf_flags |= IDE_TFLAG_OUT_LBAL; | |
600 | if (req_task->out_flags.b.lcyl) | |
601 | args.tf_flags |= IDE_TFLAG_OUT_LBAM; | |
602 | if (req_task->out_flags.b.hcyl) | |
603 | args.tf_flags |= IDE_TFLAG_OUT_LBAH; | |
a3bbb9d8 BZ |
604 | } else { |
605 | args.tf_flags |= IDE_TFLAG_OUT_TF; | |
606 | if (args.tf_flags & IDE_TFLAG_LBA48) | |
607 | args.tf_flags |= IDE_TFLAG_OUT_HOB; | |
74095a91 BZ |
608 | } |
609 | ||
866e2ec9 BZ |
610 | if (req_task->in_flags.b.data) |
611 | args.tf_flags |= IDE_TFLAG_IN_DATA; | |
612 | ||
1da177e4 | 613 | switch(req_task->data_phase) { |
1da177e4 LT |
614 | case TASKFILE_MULTI_OUT: |
615 | if (!drive->mult_count) { | |
616 | /* (hs): give up if multcount is not set */ | |
617 | printk(KERN_ERR "%s: %s Multimode Write " \ | |
618 | "multcount is not set\n", | |
eb63963a | 619 | drive->name, __func__); |
1da177e4 LT |
620 | err = -EPERM; |
621 | goto abort; | |
622 | } | |
623 | /* fall through */ | |
624 | case TASKFILE_OUT: | |
ac026ff2 BZ |
625 | /* fall through */ |
626 | case TASKFILE_OUT_DMAQ: | |
627 | case TASKFILE_OUT_DMA: | |
628 | nsect = taskout / SECTOR_SIZE; | |
629 | data_buf = outbuf; | |
1da177e4 LT |
630 | break; |
631 | case TASKFILE_MULTI_IN: | |
632 | if (!drive->mult_count) { | |
633 | /* (hs): give up if multcount is not set */ | |
634 | printk(KERN_ERR "%s: %s Multimode Read failure " \ | |
635 | "multcount is not set\n", | |
eb63963a | 636 | drive->name, __func__); |
1da177e4 LT |
637 | err = -EPERM; |
638 | goto abort; | |
639 | } | |
640 | /* fall through */ | |
641 | case TASKFILE_IN: | |
ac026ff2 BZ |
642 | /* fall through */ |
643 | case TASKFILE_IN_DMAQ: | |
644 | case TASKFILE_IN_DMA: | |
645 | nsect = taskin / SECTOR_SIZE; | |
646 | data_buf = inbuf; | |
1da177e4 LT |
647 | break; |
648 | case TASKFILE_NO_DATA: | |
1da177e4 LT |
649 | break; |
650 | default: | |
651 | err = -EFAULT; | |
652 | goto abort; | |
653 | } | |
654 | ||
ac026ff2 BZ |
655 | if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) |
656 | nsect = 0; | |
657 | else if (!nsect) { | |
658 | nsect = (args.tf.hob_nsect << 8) | args.tf.nsect; | |
659 | ||
660 | if (!nsect) { | |
661 | printk(KERN_ERR "%s: in/out command without data\n", | |
662 | drive->name); | |
663 | err = -EFAULT; | |
664 | goto abort; | |
665 | } | |
666 | } | |
667 | ||
668 | if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) | |
669 | args.tf_flags |= IDE_TFLAG_WRITE; | |
670 | ||
671 | err = ide_raw_taskfile(drive, &args, data_buf, nsect); | |
672 | ||
650d841d BZ |
673 | memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2); |
674 | memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 BZ |
675 | |
676 | if ((args.tf_flags & IDE_TFLAG_FLAGGED_SET_IN_FLAGS) && | |
677 | req_task->in_flags.all == 0) { | |
678 | req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; | |
679 | if (drive->addressing == 1) | |
680 | req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); | |
681 | } | |
1da177e4 LT |
682 | |
683 | if (copy_to_user(buf, req_task, tasksize)) { | |
684 | err = -EFAULT; | |
685 | goto abort; | |
686 | } | |
687 | if (taskout) { | |
688 | int outtotal = tasksize; | |
689 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { | |
690 | err = -EFAULT; | |
691 | goto abort; | |
692 | } | |
693 | } | |
694 | if (taskin) { | |
695 | int intotal = tasksize + taskout; | |
696 | if (copy_to_user(buf + intotal, inbuf, taskin)) { | |
697 | err = -EFAULT; | |
698 | goto abort; | |
699 | } | |
700 | } | |
701 | abort: | |
702 | kfree(req_task); | |
6044ec88 JJ |
703 | kfree(outbuf); |
704 | kfree(inbuf); | |
1da177e4 LT |
705 | |
706 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); | |
707 | ||
1da177e4 LT |
708 | return err; |
709 | } | |
26a5b040 | 710 | #endif |
1da177e4 | 711 | |
1da177e4 LT |
712 | int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
713 | { | |
5a9e77af BZ |
714 | u8 *buf = NULL; |
715 | int bufsize = 0, err = 0; | |
716 | u8 args[4], xfer_rate = 0; | |
1da177e4 | 717 | ide_task_t tfargs; |
650d841d | 718 | struct ide_taskfile *tf = &tfargs.tf; |
5efe7c54 | 719 | struct hd_driveid *id = drive->id; |
1da177e4 LT |
720 | |
721 | if (NULL == (void *) arg) { | |
154ed280 | 722 | struct request *rq; |
145b75e9 | 723 | |
154ed280 FT |
724 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
725 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
726 | err = blk_execute_rq(drive->queue, NULL, rq, 0); | |
727 | blk_put_request(rq); | |
145b75e9 | 728 | |
154ed280 | 729 | return err; |
1da177e4 LT |
730 | } |
731 | ||
732 | if (copy_from_user(args, (void __user *)arg, 4)) | |
733 | return -EFAULT; | |
734 | ||
735 | memset(&tfargs, 0, sizeof(ide_task_t)); | |
650d841d | 736 | tf->feature = args[2]; |
5a9e77af BZ |
737 | if (args[0] == WIN_SMART) { |
738 | tf->nsect = args[3]; | |
739 | tf->lbal = args[1]; | |
740 | tf->lbam = 0x4f; | |
741 | tf->lbah = 0xc2; | |
742 | tfargs.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_IN_NSECT; | |
743 | } else { | |
744 | tf->nsect = args[1]; | |
745 | tfargs.tf_flags = IDE_TFLAG_OUT_FEATURE | | |
746 | IDE_TFLAG_OUT_NSECT | IDE_TFLAG_IN_NSECT; | |
747 | } | |
650d841d | 748 | tf->command = args[0]; |
5a9e77af | 749 | tfargs.data_phase = args[3] ? TASKFILE_IN : TASKFILE_NO_DATA; |
1da177e4 LT |
750 | |
751 | if (args[3]) { | |
5a9e77af BZ |
752 | tfargs.tf_flags |= IDE_TFLAG_IO_16BIT; |
753 | bufsize = SECTOR_WORDS * 4 * args[3]; | |
754 | buf = kzalloc(bufsize, GFP_KERNEL); | |
755 | if (buf == NULL) | |
1da177e4 | 756 | return -ENOMEM; |
1da177e4 | 757 | } |
5a9e77af | 758 | |
5efe7c54 BZ |
759 | if (tf->command == WIN_SETFEATURES && |
760 | tf->feature == SETFEATURES_XFER && | |
761 | tf->nsect >= XFER_SW_DMA_0 && | |
762 | (id->dma_ultra || id->dma_mword || id->dma_1word)) { | |
1da177e4 | 763 | xfer_rate = args[1]; |
af10f773 BZ |
764 | if (tf->nsect > XFER_UDMA_2 && !eighty_ninty_three(drive)) { |
765 | printk(KERN_WARNING "%s: UDMA speeds >UDMA33 cannot " | |
766 | "be set\n", drive->name); | |
1da177e4 | 767 | goto abort; |
af10f773 | 768 | } |
1da177e4 LT |
769 | } |
770 | ||
5a9e77af BZ |
771 | err = ide_raw_taskfile(drive, &tfargs, buf, args[3]); |
772 | ||
773 | args[0] = tf->status; | |
774 | args[1] = tf->error; | |
775 | args[2] = tf->nsect; | |
1da177e4 LT |
776 | |
777 | if (!err && xfer_rate) { | |
778 | /* active-retuning-calls future */ | |
779 | ide_set_xfer_rate(drive, xfer_rate); | |
780 | ide_driveid_update(drive); | |
781 | } | |
782 | abort: | |
5a9e77af | 783 | if (copy_to_user((void __user *)arg, &args, 4)) |
1da177e4 | 784 | err = -EFAULT; |
5a9e77af BZ |
785 | if (buf) { |
786 | if (copy_to_user((void __user *)(arg + 4), buf, bufsize)) | |
787 | err = -EFAULT; | |
788 | kfree(buf); | |
789 | } | |
1da177e4 LT |
790 | return err; |
791 | } | |
792 | ||
1da177e4 LT |
793 | int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
794 | { | |
795 | void __user *p = (void __user *)arg; | |
796 | int err = 0; | |
14b89ef9 BZ |
797 | u8 args[7]; |
798 | ide_task_t task; | |
1da177e4 LT |
799 | |
800 | if (copy_from_user(args, p, 7)) | |
801 | return -EFAULT; | |
14b89ef9 BZ |
802 | |
803 | memset(&task, 0, sizeof(task)); | |
804 | memcpy(&task.tf_array[7], &args[1], 6); | |
805 | task.tf.command = args[0]; | |
657cc1a8 | 806 | task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
14b89ef9 BZ |
807 | |
808 | err = ide_no_data_taskfile(drive, &task); | |
809 | ||
810 | args[0] = task.tf.command; | |
811 | memcpy(&args[1], &task.tf_array[7], 6); | |
812 | ||
813 | if (copy_to_user(p, args, 7)) | |
1da177e4 | 814 | err = -EFAULT; |
14b89ef9 | 815 | |
1da177e4 LT |
816 | return err; |
817 | } |