]>
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 *); |
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; |
374e042c | 67 | const struct ide_tp_ops *tp_ops = hwif->tp_ops; |
f37afdac | 68 | const struct ide_dma_ops *dma_ops = hwif->dma_ops; |
1da177e4 | 69 | |
1edee60e BZ |
70 | if (task->data_phase == TASKFILE_MULTI_IN || |
71 | task->data_phase == TASKFILE_MULTI_OUT) { | |
72 | if (!drive->mult_count) { | |
73 | printk(KERN_ERR "%s: multimode not set!\n", | |
74 | drive->name); | |
75 | return ide_stopped; | |
76 | } | |
77 | } | |
78 | ||
79 | if (task->tf_flags & IDE_TFLAG_FLAGGED) | |
80 | task->tf_flags |= IDE_TFLAG_FLAGGED_SET_IN_FLAGS; | |
81 | ||
089c5c7e BZ |
82 | if ((task->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) { |
83 | ide_tf_dump(drive->name, tf); | |
374e042c | 84 | tp_ops->set_irq(hwif, 1); |
ed4af48f | 85 | SELECT_MASK(drive, 0); |
374e042c | 86 | tp_ops->tf_load(drive, task); |
089c5c7e | 87 | } |
1da177e4 | 88 | |
10d90157 BZ |
89 | switch (task->data_phase) { |
90 | case TASKFILE_MULTI_OUT: | |
91 | case TASKFILE_OUT: | |
374e042c | 92 | tp_ops->exec_command(hwif, tf->command); |
10d90157 BZ |
93 | ndelay(400); /* FIXME */ |
94 | return pre_task_out_intr(drive, task->rq); | |
95 | case TASKFILE_MULTI_IN: | |
96 | case TASKFILE_IN: | |
57d7366b | 97 | handler = task_in_intr; |
1192e528 | 98 | /* fall-through */ |
10d90157 | 99 | case TASKFILE_NO_DATA: |
57d7366b BZ |
100 | if (handler == NULL) |
101 | handler = task_no_data_intr; | |
57d7366b BZ |
102 | if (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) { |
103 | switch (tf->command) { | |
aaaade3f BZ |
104 | case ATA_CMD_INIT_DEV_PARAMS: |
105 | handler = set_geometry_intr; | |
106 | break; | |
107 | case ATA_CMD_RESTORE: | |
108 | handler = recal_intr; | |
109 | break; | |
110 | case ATA_CMD_SET_MULTI: | |
111 | handler = set_multmode_intr; | |
112 | break; | |
57d7366b BZ |
113 | } |
114 | } | |
115 | ide_execute_command(drive, tf->command, handler, | |
116 | WAIT_WORSTCASE, NULL); | |
1da177e4 | 117 | return ide_started; |
10d90157 | 118 | default: |
07fe69d5 | 119 | if (drive->using_dma == 0 || dma_ops->dma_setup(drive)) |
10d90157 | 120 | return ide_stopped; |
5e37bdc0 BZ |
121 | dma_ops->dma_exec_cmd(drive, tf->command); |
122 | dma_ops->dma_start(drive); | |
74095a91 | 123 | return ide_started; |
1da177e4 | 124 | } |
1da177e4 | 125 | } |
f6e29e35 | 126 | EXPORT_SYMBOL_GPL(do_rw_taskfile); |
1da177e4 | 127 | |
1da177e4 | 128 | /* |
aaaade3f | 129 | * set_multmode_intr() is invoked on completion of a ATA_CMD_SET_MULTI cmd. |
1da177e4 | 130 | */ |
57d7366b | 131 | static ide_startstop_t set_multmode_intr(ide_drive_t *drive) |
1da177e4 | 132 | { |
b73c7ee2 | 133 | ide_hwif_t *hwif = drive->hwif; |
90d2c6bc BZ |
134 | u8 stat; |
135 | ||
136 | local_irq_enable_in_hardirq(); | |
137 | stat = hwif->tp_ops->read_status(hwif); | |
1da177e4 | 138 | |
3a7d2484 | 139 | if (OK_STAT(stat, ATA_DRDY, BAD_STAT)) |
1da177e4 | 140 | drive->mult_count = drive->mult_req; |
c47137a9 | 141 | else { |
1da177e4 LT |
142 | drive->mult_req = drive->mult_count = 0; |
143 | drive->special.b.recalibrate = 1; | |
144 | (void) ide_dump_status(drive, "set_multmode", stat); | |
145 | } | |
146 | return ide_stopped; | |
147 | } | |
148 | ||
149 | /* | |
aaaade3f | 150 | * set_geometry_intr() is invoked on completion of a ATA_CMD_INIT_DEV_PARAMS cmd. |
1da177e4 | 151 | */ |
57d7366b | 152 | static ide_startstop_t set_geometry_intr(ide_drive_t *drive) |
1da177e4 | 153 | { |
b73c7ee2 | 154 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 LT |
155 | int retries = 5; |
156 | u8 stat; | |
157 | ||
90d2c6bc BZ |
158 | local_irq_enable_in_hardirq(); |
159 | ||
374e042c BZ |
160 | while (1) { |
161 | stat = hwif->tp_ops->read_status(hwif); | |
3a7d2484 | 162 | if ((stat & ATA_BUSY) == 0 || retries-- == 0) |
374e042c | 163 | break; |
1da177e4 | 164 | udelay(10); |
374e042c | 165 | }; |
1da177e4 | 166 | |
3a7d2484 | 167 | if (OK_STAT(stat, ATA_DRDY, BAD_STAT)) |
1da177e4 LT |
168 | return ide_stopped; |
169 | ||
3a7d2484 | 170 | if (stat & (ATA_ERR | ATA_DRQ)) |
1da177e4 LT |
171 | return ide_error(drive, "set_geometry_intr", stat); |
172 | ||
1da177e4 LT |
173 | ide_set_handler(drive, &set_geometry_intr, WAIT_WORSTCASE, NULL); |
174 | return ide_started; | |
175 | } | |
176 | ||
177 | /* | |
aaaade3f | 178 | * recal_intr() is invoked on completion of a ATA_CMD_RESTORE (recalibrate) cmd. |
1da177e4 | 179 | */ |
57d7366b | 180 | static ide_startstop_t recal_intr(ide_drive_t *drive) |
1da177e4 | 181 | { |
b73c7ee2 | 182 | ide_hwif_t *hwif = drive->hwif; |
90d2c6bc BZ |
183 | u8 stat; |
184 | ||
185 | local_irq_enable_in_hardirq(); | |
186 | stat = hwif->tp_ops->read_status(hwif); | |
1da177e4 | 187 | |
3a7d2484 | 188 | if (!OK_STAT(stat, ATA_DRDY, BAD_STAT)) |
1da177e4 LT |
189 | return ide_error(drive, "recal_intr", stat); |
190 | return ide_stopped; | |
191 | } | |
192 | ||
193 | /* | |
194 | * Handler for commands without a data phase | |
195 | */ | |
1192e528 | 196 | static ide_startstop_t task_no_data_intr(ide_drive_t *drive) |
1da177e4 | 197 | { |
b73c7ee2 BZ |
198 | ide_hwif_t *hwif = drive->hwif; |
199 | ide_task_t *args = hwif->hwgroup->rq->special; | |
1da177e4 LT |
200 | u8 stat; |
201 | ||
366c7f55 | 202 | local_irq_enable_in_hardirq(); |
374e042c | 203 | stat = hwif->tp_ops->read_status(hwif); |
c47137a9 | 204 | |
3a7d2484 | 205 | if (!OK_STAT(stat, ATA_DRDY, BAD_STAT)) |
1da177e4 LT |
206 | return ide_error(drive, "task_no_data_intr", stat); |
207 | /* calls ide_end_drive_cmd */ | |
c47137a9 | 208 | |
1da177e4 | 209 | if (args) |
64a57fe4 | 210 | ide_end_drive_cmd(drive, stat, ide_read_error(drive)); |
1da177e4 LT |
211 | |
212 | return ide_stopped; | |
213 | } | |
214 | ||
da6f4c7f | 215 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
1da177e4 | 216 | { |
b73c7ee2 | 217 | ide_hwif_t *hwif = drive->hwif; |
b42fa133 | 218 | int retries; |
1da177e4 LT |
219 | u8 stat; |
220 | ||
221 | /* | |
f54feafa BZ |
222 | * Last sector was transfered, wait until device is ready. This can |
223 | * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms. | |
1da177e4 | 224 | */ |
f54feafa | 225 | for (retries = 0; retries < 1000; retries++) { |
374e042c | 226 | stat = hwif->tp_ops->read_status(hwif); |
c47137a9 | 227 | |
3a7d2484 | 228 | if (stat & ATA_BUSY) |
b42fa133 MY |
229 | udelay(10); |
230 | else | |
231 | break; | |
232 | } | |
1da177e4 | 233 | |
3a7d2484 | 234 | if (stat & ATA_BUSY) |
1da177e4 LT |
235 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
236 | ||
237 | return stat; | |
238 | } | |
239 | ||
92d3ab27 BZ |
240 | static void ide_pio_sector(ide_drive_t *drive, struct request *rq, |
241 | unsigned int write) | |
1da177e4 LT |
242 | { |
243 | ide_hwif_t *hwif = drive->hwif; | |
244 | struct scatterlist *sg = hwif->sg_table; | |
55c16a70 | 245 | struct scatterlist *cursg = hwif->cursg; |
1da177e4 LT |
246 | struct page *page; |
247 | #ifdef CONFIG_HIGHMEM | |
248 | unsigned long flags; | |
249 | #endif | |
250 | unsigned int offset; | |
251 | u8 *buf; | |
252 | ||
55c16a70 JA |
253 | cursg = hwif->cursg; |
254 | if (!cursg) { | |
255 | cursg = sg; | |
256 | hwif->cursg = sg; | |
257 | } | |
258 | ||
45711f1a | 259 | page = sg_page(cursg); |
55c16a70 | 260 | offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE; |
1da177e4 LT |
261 | |
262 | /* get the current page and offset */ | |
263 | page = nth_page(page, (offset >> PAGE_SHIFT)); | |
264 | offset %= PAGE_SIZE; | |
265 | ||
266 | #ifdef CONFIG_HIGHMEM | |
267 | local_irq_save(flags); | |
268 | #endif | |
269 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; | |
270 | ||
271 | hwif->nleft--; | |
272 | hwif->cursg_ofs++; | |
273 | ||
55c16a70 JA |
274 | if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) { |
275 | hwif->cursg = sg_next(hwif->cursg); | |
1da177e4 LT |
276 | hwif->cursg_ofs = 0; |
277 | } | |
278 | ||
279 | /* do the actual data transfer */ | |
280 | if (write) | |
374e042c | 281 | hwif->tp_ops->output_data(drive, rq, buf, SECTOR_SIZE); |
1da177e4 | 282 | else |
374e042c | 283 | hwif->tp_ops->input_data(drive, rq, buf, SECTOR_SIZE); |
1da177e4 LT |
284 | |
285 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); | |
286 | #ifdef CONFIG_HIGHMEM | |
287 | local_irq_restore(flags); | |
288 | #endif | |
289 | } | |
290 | ||
92d3ab27 BZ |
291 | static void ide_pio_multi(ide_drive_t *drive, struct request *rq, |
292 | unsigned int write) | |
1da177e4 LT |
293 | { |
294 | unsigned int nsect; | |
295 | ||
296 | nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count); | |
297 | while (nsect--) | |
92d3ab27 | 298 | ide_pio_sector(drive, rq, write); |
1da177e4 LT |
299 | } |
300 | ||
858119e1 | 301 | static void ide_pio_datablock(ide_drive_t *drive, struct request *rq, |
1da177e4 LT |
302 | unsigned int write) |
303 | { | |
35cf2b94 TH |
304 | u8 saved_io_32bit = drive->io_32bit; |
305 | ||
1da177e4 LT |
306 | if (rq->bio) /* fs request */ |
307 | rq->errors = 0; | |
308 | ||
35cf2b94 TH |
309 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
310 | ide_task_t *task = rq->special; | |
311 | ||
312 | if (task->tf_flags & IDE_TFLAG_IO_16BIT) | |
313 | drive->io_32bit = 0; | |
314 | } | |
315 | ||
651c29a1 AM |
316 | touch_softlockup_watchdog(); |
317 | ||
1da177e4 LT |
318 | switch (drive->hwif->data_phase) { |
319 | case TASKFILE_MULTI_IN: | |
320 | case TASKFILE_MULTI_OUT: | |
92d3ab27 | 321 | ide_pio_multi(drive, rq, write); |
1da177e4 LT |
322 | break; |
323 | default: | |
92d3ab27 | 324 | ide_pio_sector(drive, rq, write); |
1da177e4 LT |
325 | break; |
326 | } | |
35cf2b94 TH |
327 | |
328 | drive->io_32bit = saved_io_32bit; | |
1da177e4 LT |
329 | } |
330 | ||
331 | static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq, | |
332 | const char *s, u8 stat) | |
333 | { | |
334 | if (rq->bio) { | |
335 | ide_hwif_t *hwif = drive->hwif; | |
336 | int sectors = hwif->nsect - hwif->nleft; | |
337 | ||
338 | switch (hwif->data_phase) { | |
339 | case TASKFILE_IN: | |
340 | if (hwif->nleft) | |
341 | break; | |
342 | /* fall through */ | |
343 | case TASKFILE_OUT: | |
344 | sectors--; | |
345 | break; | |
346 | case TASKFILE_MULTI_IN: | |
347 | if (hwif->nleft) | |
348 | break; | |
349 | /* fall through */ | |
350 | case TASKFILE_MULTI_OUT: | |
351 | sectors -= drive->mult_count; | |
352 | default: | |
353 | break; | |
354 | } | |
355 | ||
356 | if (sectors > 0) { | |
357 | ide_driver_t *drv; | |
358 | ||
359 | drv = *(ide_driver_t **)rq->rq_disk->private_data; | |
360 | drv->end_request(drive, 1, sectors); | |
361 | } | |
362 | } | |
363 | return ide_error(drive, s, stat); | |
364 | } | |
365 | ||
4d7a984b | 366 | void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat) |
1da177e4 | 367 | { |
4aff5e23 | 368 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
64a57fe4 | 369 | u8 err = ide_read_error(drive); |
1da177e4 | 370 | |
4d7a984b TH |
371 | ide_end_drive_cmd(drive, stat, err); |
372 | return; | |
1da177e4 LT |
373 | } |
374 | ||
03731fbd RP |
375 | if (rq->rq_disk) { |
376 | ide_driver_t *drv; | |
377 | ||
378 | drv = *(ide_driver_t **)rq->rq_disk->private_data;; | |
79f21b84 | 379 | drv->end_request(drive, 1, rq->nr_sectors); |
03731fbd | 380 | } else |
79f21b84 | 381 | ide_end_request(drive, 1, rq->nr_sectors); |
1da177e4 LT |
382 | } |
383 | ||
6c3c3158 LT |
384 | /* |
385 | * We got an interrupt on a task_in case, but no errors and no DRQ. | |
386 | * | |
387 | * It might be a spurious irq (shared irq), but it might be a | |
388 | * command that had no output. | |
389 | */ | |
390 | static ide_startstop_t task_in_unexpected(ide_drive_t *drive, struct request *rq, u8 stat) | |
391 | { | |
392 | /* Command all done? */ | |
3a7d2484 | 393 | if (OK_STAT(stat, ATA_DRDY, ATA_BUSY)) { |
6c3c3158 LT |
394 | task_end_request(drive, rq, stat); |
395 | return ide_stopped; | |
396 | } | |
397 | ||
398 | /* Assume it was a spurious irq */ | |
399 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
400 | return ide_started; | |
401 | } | |
402 | ||
1da177e4 LT |
403 | /* |
404 | * Handler for command with PIO data-in phase (Read/Read Multiple). | |
405 | */ | |
f6e29e35 | 406 | static ide_startstop_t task_in_intr(ide_drive_t *drive) |
1da177e4 LT |
407 | { |
408 | ide_hwif_t *hwif = drive->hwif; | |
b73c7ee2 | 409 | struct request *rq = hwif->hwgroup->rq; |
374e042c | 410 | u8 stat = hwif->tp_ops->read_status(hwif); |
1da177e4 | 411 | |
6c3c3158 | 412 | /* Error? */ |
3a7d2484 | 413 | if (stat & ATA_ERR) |
eb63963a | 414 | return task_error(drive, rq, __func__, stat); |
6c3c3158 LT |
415 | |
416 | /* Didn't want any data? Odd. */ | |
3a7d2484 | 417 | if ((stat & ATA_DRQ) == 0) |
6c3c3158 | 418 | return task_in_unexpected(drive, rq, stat); |
1da177e4 LT |
419 | |
420 | ide_pio_datablock(drive, rq, 0); | |
421 | ||
6c3c3158 | 422 | /* Are we done? Check status and finish transfer. */ |
1da177e4 LT |
423 | if (!hwif->nleft) { |
424 | stat = wait_drive_not_busy(drive); | |
73d7de0c | 425 | if (!OK_STAT(stat, 0, BAD_STAT)) |
eb63963a | 426 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
427 | task_end_request(drive, rq, stat); |
428 | return ide_stopped; | |
429 | } | |
430 | ||
431 | /* Still data left to transfer. */ | |
432 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
433 | ||
434 | return ide_started; | |
435 | } | |
1da177e4 LT |
436 | |
437 | /* | |
438 | * Handler for command with PIO data-out phase (Write/Write Multiple). | |
439 | */ | |
440 | static ide_startstop_t task_out_intr (ide_drive_t *drive) | |
441 | { | |
442 | ide_hwif_t *hwif = drive->hwif; | |
443 | struct request *rq = HWGROUP(drive)->rq; | |
374e042c | 444 | u8 stat = hwif->tp_ops->read_status(hwif); |
1da177e4 LT |
445 | |
446 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) | |
eb63963a | 447 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
448 | |
449 | /* Deal with unexpected ATA data phase. */ | |
3a7d2484 | 450 | if (((stat & ATA_DRQ) == 0) ^ !hwif->nleft) |
eb63963a | 451 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
452 | |
453 | if (!hwif->nleft) { | |
454 | task_end_request(drive, rq, stat); | |
455 | return ide_stopped; | |
456 | } | |
457 | ||
458 | /* Still data left to transfer. */ | |
459 | ide_pio_datablock(drive, rq, 1); | |
460 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
461 | ||
462 | return ide_started; | |
463 | } | |
464 | ||
f6e29e35 | 465 | static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq) |
1da177e4 LT |
466 | { |
467 | ide_startstop_t startstop; | |
468 | ||
3a7d2484 | 469 | if (ide_wait_stat(&startstop, drive, ATA_DRQ, |
1da177e4 LT |
470 | drive->bad_wstat, WAIT_DRQ)) { |
471 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", | |
472 | drive->name, | |
473 | drive->hwif->data_phase ? "MULT" : "", | |
474 | drive->addressing ? "_EXT" : ""); | |
475 | return startstop; | |
476 | } | |
477 | ||
478 | if (!drive->unmask) | |
479 | local_irq_disable(); | |
480 | ||
481 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
482 | ide_pio_datablock(drive, rq, 1); | |
483 | ||
484 | return ide_started; | |
485 | } | |
1da177e4 | 486 | |
ac026ff2 | 487 | int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect) |
1da177e4 | 488 | { |
154ed280 FT |
489 | struct request *rq; |
490 | int error; | |
1da177e4 | 491 | |
154ed280 FT |
492 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
493 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
494 | rq->buffer = buf; | |
1da177e4 LT |
495 | |
496 | /* | |
497 | * (ks) We transfer currently only whole sectors. | |
498 | * This is suffient for now. But, it would be great, | |
499 | * if we would find a solution to transfer any size. | |
500 | * To support special commands like READ LONG. | |
501 | */ | |
154ed280 FT |
502 | rq->hard_nr_sectors = rq->nr_sectors = nsect; |
503 | rq->hard_cur_sectors = rq->current_nr_sectors = nsect; | |
1da177e4 | 504 | |
ac026ff2 | 505 | if (task->tf_flags & IDE_TFLAG_WRITE) |
154ed280 | 506 | rq->cmd_flags |= REQ_RW; |
1da177e4 | 507 | |
154ed280 FT |
508 | rq->special = task; |
509 | task->rq = rq; | |
1da177e4 | 510 | |
154ed280 FT |
511 | error = blk_execute_rq(drive->queue, NULL, rq, 0); |
512 | blk_put_request(rq); | |
513 | ||
514 | return error; | |
1da177e4 LT |
515 | } |
516 | ||
1da177e4 LT |
517 | EXPORT_SYMBOL(ide_raw_taskfile); |
518 | ||
9a3c49be BZ |
519 | int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task) |
520 | { | |
ac026ff2 | 521 | task->data_phase = TASKFILE_NO_DATA; |
9a3c49be | 522 | |
ac026ff2 | 523 | return ide_raw_taskfile(drive, task, NULL, 0); |
9a3c49be BZ |
524 | } |
525 | EXPORT_SYMBOL_GPL(ide_no_data_taskfile); | |
526 | ||
26a5b040 | 527 | #ifdef CONFIG_IDE_TASK_IOCTL |
1da177e4 LT |
528 | int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
529 | { | |
530 | ide_task_request_t *req_task; | |
531 | ide_task_t args; | |
532 | u8 *outbuf = NULL; | |
533 | u8 *inbuf = NULL; | |
ac026ff2 | 534 | u8 *data_buf = NULL; |
1da177e4 LT |
535 | int err = 0; |
536 | int tasksize = sizeof(struct ide_task_request_s); | |
3a42bb22 AC |
537 | unsigned int taskin = 0; |
538 | unsigned int taskout = 0; | |
ac026ff2 | 539 | u16 nsect = 0; |
1da177e4 LT |
540 | char __user *buf = (char __user *)arg; |
541 | ||
542 | // printk("IDE Taskfile ...\n"); | |
543 | ||
f5e3c2fa | 544 | req_task = kzalloc(tasksize, GFP_KERNEL); |
1da177e4 | 545 | if (req_task == NULL) return -ENOMEM; |
1da177e4 LT |
546 | if (copy_from_user(req_task, buf, tasksize)) { |
547 | kfree(req_task); | |
548 | return -EFAULT; | |
549 | } | |
550 | ||
3a42bb22 AC |
551 | taskout = req_task->out_size; |
552 | taskin = req_task->in_size; | |
553 | ||
554 | if (taskin > 65536 || taskout > 65536) { | |
555 | err = -EINVAL; | |
556 | goto abort; | |
557 | } | |
1da177e4 LT |
558 | |
559 | if (taskout) { | |
560 | int outtotal = tasksize; | |
f5e3c2fa | 561 | outbuf = kzalloc(taskout, GFP_KERNEL); |
1da177e4 LT |
562 | if (outbuf == NULL) { |
563 | err = -ENOMEM; | |
564 | goto abort; | |
565 | } | |
1da177e4 LT |
566 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
567 | err = -EFAULT; | |
568 | goto abort; | |
569 | } | |
570 | } | |
571 | ||
572 | if (taskin) { | |
573 | int intotal = tasksize + taskout; | |
f5e3c2fa | 574 | inbuf = kzalloc(taskin, GFP_KERNEL); |
1da177e4 LT |
575 | if (inbuf == NULL) { |
576 | err = -ENOMEM; | |
577 | goto abort; | |
578 | } | |
1da177e4 LT |
579 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
580 | err = -EFAULT; | |
581 | goto abort; | |
582 | } | |
583 | } | |
584 | ||
585 | memset(&args, 0, sizeof(ide_task_t)); | |
1da177e4 | 586 | |
650d841d BZ |
587 | memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); |
588 | memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 BZ |
589 | |
590 | args.data_phase = req_task->data_phase; | |
1da177e4 | 591 | |
657cc1a8 BZ |
592 | args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE | |
593 | IDE_TFLAG_IN_TF; | |
a3bbb9d8 | 594 | if (drive->addressing == 1) |
657cc1a8 | 595 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB); |
a3bbb9d8 | 596 | |
74095a91 BZ |
597 | if (req_task->out_flags.all) { |
598 | args.tf_flags |= IDE_TFLAG_FLAGGED; | |
599 | ||
600 | if (req_task->out_flags.b.data) | |
601 | args.tf_flags |= IDE_TFLAG_OUT_DATA; | |
602 | ||
603 | if (req_task->out_flags.b.nsector_hob) | |
604 | args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; | |
605 | if (req_task->out_flags.b.sector_hob) | |
606 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; | |
607 | if (req_task->out_flags.b.lcyl_hob) | |
608 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; | |
609 | if (req_task->out_flags.b.hcyl_hob) | |
610 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; | |
611 | ||
612 | if (req_task->out_flags.b.error_feature) | |
613 | args.tf_flags |= IDE_TFLAG_OUT_FEATURE; | |
614 | if (req_task->out_flags.b.nsector) | |
615 | args.tf_flags |= IDE_TFLAG_OUT_NSECT; | |
616 | if (req_task->out_flags.b.sector) | |
617 | args.tf_flags |= IDE_TFLAG_OUT_LBAL; | |
618 | if (req_task->out_flags.b.lcyl) | |
619 | args.tf_flags |= IDE_TFLAG_OUT_LBAM; | |
620 | if (req_task->out_flags.b.hcyl) | |
621 | args.tf_flags |= IDE_TFLAG_OUT_LBAH; | |
a3bbb9d8 BZ |
622 | } else { |
623 | args.tf_flags |= IDE_TFLAG_OUT_TF; | |
624 | if (args.tf_flags & IDE_TFLAG_LBA48) | |
625 | args.tf_flags |= IDE_TFLAG_OUT_HOB; | |
74095a91 BZ |
626 | } |
627 | ||
866e2ec9 BZ |
628 | if (req_task->in_flags.b.data) |
629 | args.tf_flags |= IDE_TFLAG_IN_DATA; | |
630 | ||
1da177e4 | 631 | switch(req_task->data_phase) { |
1da177e4 LT |
632 | case TASKFILE_MULTI_OUT: |
633 | if (!drive->mult_count) { | |
634 | /* (hs): give up if multcount is not set */ | |
635 | printk(KERN_ERR "%s: %s Multimode Write " \ | |
636 | "multcount is not set\n", | |
eb63963a | 637 | drive->name, __func__); |
1da177e4 LT |
638 | err = -EPERM; |
639 | goto abort; | |
640 | } | |
641 | /* fall through */ | |
642 | case TASKFILE_OUT: | |
ac026ff2 BZ |
643 | /* fall through */ |
644 | case TASKFILE_OUT_DMAQ: | |
645 | case TASKFILE_OUT_DMA: | |
646 | nsect = taskout / SECTOR_SIZE; | |
647 | data_buf = outbuf; | |
1da177e4 LT |
648 | break; |
649 | case TASKFILE_MULTI_IN: | |
650 | if (!drive->mult_count) { | |
651 | /* (hs): give up if multcount is not set */ | |
652 | printk(KERN_ERR "%s: %s Multimode Read failure " \ | |
653 | "multcount is not set\n", | |
eb63963a | 654 | drive->name, __func__); |
1da177e4 LT |
655 | err = -EPERM; |
656 | goto abort; | |
657 | } | |
658 | /* fall through */ | |
659 | case TASKFILE_IN: | |
ac026ff2 BZ |
660 | /* fall through */ |
661 | case TASKFILE_IN_DMAQ: | |
662 | case TASKFILE_IN_DMA: | |
663 | nsect = taskin / SECTOR_SIZE; | |
664 | data_buf = inbuf; | |
1da177e4 LT |
665 | break; |
666 | case TASKFILE_NO_DATA: | |
1da177e4 LT |
667 | break; |
668 | default: | |
669 | err = -EFAULT; | |
670 | goto abort; | |
671 | } | |
672 | ||
ac026ff2 BZ |
673 | if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) |
674 | nsect = 0; | |
675 | else if (!nsect) { | |
676 | nsect = (args.tf.hob_nsect << 8) | args.tf.nsect; | |
677 | ||
678 | if (!nsect) { | |
679 | printk(KERN_ERR "%s: in/out command without data\n", | |
680 | drive->name); | |
681 | err = -EFAULT; | |
682 | goto abort; | |
683 | } | |
684 | } | |
685 | ||
686 | if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) | |
687 | args.tf_flags |= IDE_TFLAG_WRITE; | |
688 | ||
689 | err = ide_raw_taskfile(drive, &args, data_buf, nsect); | |
690 | ||
650d841d BZ |
691 | memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2); |
692 | memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 BZ |
693 | |
694 | if ((args.tf_flags & IDE_TFLAG_FLAGGED_SET_IN_FLAGS) && | |
695 | req_task->in_flags.all == 0) { | |
696 | req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; | |
697 | if (drive->addressing == 1) | |
698 | req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); | |
699 | } | |
1da177e4 LT |
700 | |
701 | if (copy_to_user(buf, req_task, tasksize)) { | |
702 | err = -EFAULT; | |
703 | goto abort; | |
704 | } | |
705 | if (taskout) { | |
706 | int outtotal = tasksize; | |
707 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { | |
708 | err = -EFAULT; | |
709 | goto abort; | |
710 | } | |
711 | } | |
712 | if (taskin) { | |
713 | int intotal = tasksize + taskout; | |
714 | if (copy_to_user(buf + intotal, inbuf, taskin)) { | |
715 | err = -EFAULT; | |
716 | goto abort; | |
717 | } | |
718 | } | |
719 | abort: | |
720 | kfree(req_task); | |
6044ec88 JJ |
721 | kfree(outbuf); |
722 | kfree(inbuf); | |
1da177e4 LT |
723 | |
724 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); | |
725 | ||
1da177e4 LT |
726 | return err; |
727 | } | |
26a5b040 | 728 | #endif |
1da177e4 | 729 | |
1da177e4 LT |
730 | int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
731 | { | |
5a9e77af BZ |
732 | u8 *buf = NULL; |
733 | int bufsize = 0, err = 0; | |
734 | u8 args[4], xfer_rate = 0; | |
1da177e4 | 735 | ide_task_t tfargs; |
650d841d | 736 | struct ide_taskfile *tf = &tfargs.tf; |
4dde4492 | 737 | u16 *id = drive->id; |
1da177e4 LT |
738 | |
739 | if (NULL == (void *) arg) { | |
154ed280 | 740 | struct request *rq; |
145b75e9 | 741 | |
154ed280 FT |
742 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
743 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
744 | err = blk_execute_rq(drive->queue, NULL, rq, 0); | |
745 | blk_put_request(rq); | |
145b75e9 | 746 | |
154ed280 | 747 | return err; |
1da177e4 LT |
748 | } |
749 | ||
750 | if (copy_from_user(args, (void __user *)arg, 4)) | |
751 | return -EFAULT; | |
752 | ||
753 | memset(&tfargs, 0, sizeof(ide_task_t)); | |
650d841d | 754 | tf->feature = args[2]; |
aaaade3f | 755 | if (args[0] == ATA_CMD_SMART) { |
5a9e77af BZ |
756 | tf->nsect = args[3]; |
757 | tf->lbal = args[1]; | |
758 | tf->lbam = 0x4f; | |
759 | tf->lbah = 0xc2; | |
760 | tfargs.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_IN_NSECT; | |
761 | } else { | |
762 | tf->nsect = args[1]; | |
763 | tfargs.tf_flags = IDE_TFLAG_OUT_FEATURE | | |
764 | IDE_TFLAG_OUT_NSECT | IDE_TFLAG_IN_NSECT; | |
765 | } | |
650d841d | 766 | tf->command = args[0]; |
5a9e77af | 767 | tfargs.data_phase = args[3] ? TASKFILE_IN : TASKFILE_NO_DATA; |
1da177e4 LT |
768 | |
769 | if (args[3]) { | |
5a9e77af BZ |
770 | tfargs.tf_flags |= IDE_TFLAG_IO_16BIT; |
771 | bufsize = SECTOR_WORDS * 4 * args[3]; | |
772 | buf = kzalloc(bufsize, GFP_KERNEL); | |
773 | if (buf == NULL) | |
1da177e4 | 774 | return -ENOMEM; |
1da177e4 | 775 | } |
5a9e77af | 776 | |
aaaade3f | 777 | if (tf->command == ATA_CMD_SET_FEATURES && |
5efe7c54 BZ |
778 | tf->feature == SETFEATURES_XFER && |
779 | tf->nsect >= XFER_SW_DMA_0 && | |
4dde4492 BZ |
780 | (id[ATA_ID_UDMA_MODES] || |
781 | id[ATA_ID_MWDMA_MODES] || | |
782 | id[ATA_ID_SWDMA_MODES])) { | |
1da177e4 | 783 | xfer_rate = args[1]; |
af10f773 BZ |
784 | if (tf->nsect > XFER_UDMA_2 && !eighty_ninty_three(drive)) { |
785 | printk(KERN_WARNING "%s: UDMA speeds >UDMA33 cannot " | |
786 | "be set\n", drive->name); | |
1da177e4 | 787 | goto abort; |
af10f773 | 788 | } |
1da177e4 LT |
789 | } |
790 | ||
5a9e77af BZ |
791 | err = ide_raw_taskfile(drive, &tfargs, buf, args[3]); |
792 | ||
793 | args[0] = tf->status; | |
794 | args[1] = tf->error; | |
795 | args[2] = tf->nsect; | |
1da177e4 LT |
796 | |
797 | if (!err && xfer_rate) { | |
798 | /* active-retuning-calls future */ | |
799 | ide_set_xfer_rate(drive, xfer_rate); | |
800 | ide_driveid_update(drive); | |
801 | } | |
802 | abort: | |
5a9e77af | 803 | if (copy_to_user((void __user *)arg, &args, 4)) |
1da177e4 | 804 | err = -EFAULT; |
5a9e77af BZ |
805 | if (buf) { |
806 | if (copy_to_user((void __user *)(arg + 4), buf, bufsize)) | |
807 | err = -EFAULT; | |
808 | kfree(buf); | |
809 | } | |
1da177e4 LT |
810 | return err; |
811 | } | |
812 | ||
1da177e4 LT |
813 | int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
814 | { | |
815 | void __user *p = (void __user *)arg; | |
816 | int err = 0; | |
14b89ef9 BZ |
817 | u8 args[7]; |
818 | ide_task_t task; | |
1da177e4 LT |
819 | |
820 | if (copy_from_user(args, p, 7)) | |
821 | return -EFAULT; | |
14b89ef9 BZ |
822 | |
823 | memset(&task, 0, sizeof(task)); | |
824 | memcpy(&task.tf_array[7], &args[1], 6); | |
825 | task.tf.command = args[0]; | |
657cc1a8 | 826 | task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
14b89ef9 BZ |
827 | |
828 | err = ide_no_data_taskfile(drive, &task); | |
829 | ||
830 | args[0] = task.tf.command; | |
831 | memcpy(&args[1], &task.tf_array[7], 6); | |
832 | ||
833 | if (copy_to_user(p, args, 7)) | |
1da177e4 | 834 | err = -EFAULT; |
14b89ef9 | 835 | |
1da177e4 LT |
836 | return err; |
837 | } |