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; |
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; | |
1192e528 | 102 | /* WIN_{SPECIFY,RESTORE,SETMULT} use custom handlers */ |
57d7366b BZ |
103 | if (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) { |
104 | switch (tf->command) { | |
105 | case WIN_SPECIFY: handler = set_geometry_intr; break; | |
106 | case WIN_RESTORE: handler = recal_intr; break; | |
107 | case WIN_SETMULT: handler = set_multmode_intr; break; | |
108 | } | |
109 | } | |
110 | ide_execute_command(drive, tf->command, handler, | |
111 | WAIT_WORSTCASE, NULL); | |
1da177e4 | 112 | return ide_started; |
10d90157 | 113 | default: |
07fe69d5 | 114 | if (drive->using_dma == 0 || dma_ops->dma_setup(drive)) |
10d90157 | 115 | return ide_stopped; |
5e37bdc0 BZ |
116 | dma_ops->dma_exec_cmd(drive, tf->command); |
117 | dma_ops->dma_start(drive); | |
74095a91 | 118 | return ide_started; |
1da177e4 | 119 | } |
1da177e4 | 120 | } |
f6e29e35 | 121 | EXPORT_SYMBOL_GPL(do_rw_taskfile); |
1da177e4 | 122 | |
1da177e4 LT |
123 | /* |
124 | * set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd. | |
125 | */ | |
57d7366b | 126 | static ide_startstop_t set_multmode_intr(ide_drive_t *drive) |
1da177e4 | 127 | { |
b73c7ee2 | 128 | ide_hwif_t *hwif = drive->hwif; |
374e042c | 129 | u8 stat = hwif->tp_ops->read_status(hwif); |
1da177e4 | 130 | |
c47137a9 | 131 | if (OK_STAT(stat, READY_STAT, BAD_STAT)) |
1da177e4 | 132 | drive->mult_count = drive->mult_req; |
c47137a9 | 133 | else { |
1da177e4 LT |
134 | drive->mult_req = drive->mult_count = 0; |
135 | drive->special.b.recalibrate = 1; | |
136 | (void) ide_dump_status(drive, "set_multmode", stat); | |
137 | } | |
138 | return ide_stopped; | |
139 | } | |
140 | ||
141 | /* | |
142 | * set_geometry_intr() is invoked on completion of a WIN_SPECIFY cmd. | |
143 | */ | |
57d7366b | 144 | static ide_startstop_t set_geometry_intr(ide_drive_t *drive) |
1da177e4 | 145 | { |
b73c7ee2 | 146 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 LT |
147 | int retries = 5; |
148 | u8 stat; | |
149 | ||
374e042c BZ |
150 | while (1) { |
151 | stat = hwif->tp_ops->read_status(hwif); | |
152 | if ((stat & BUSY_STAT) == 0 || retries-- == 0) | |
153 | break; | |
1da177e4 | 154 | udelay(10); |
374e042c | 155 | }; |
1da177e4 LT |
156 | |
157 | if (OK_STAT(stat, READY_STAT, BAD_STAT)) | |
158 | return ide_stopped; | |
159 | ||
160 | if (stat & (ERR_STAT|DRQ_STAT)) | |
161 | return ide_error(drive, "set_geometry_intr", stat); | |
162 | ||
1da177e4 LT |
163 | ide_set_handler(drive, &set_geometry_intr, WAIT_WORSTCASE, NULL); |
164 | return ide_started; | |
165 | } | |
166 | ||
167 | /* | |
168 | * recal_intr() is invoked on completion of a WIN_RESTORE (recalibrate) cmd. | |
169 | */ | |
57d7366b | 170 | static ide_startstop_t recal_intr(ide_drive_t *drive) |
1da177e4 | 171 | { |
b73c7ee2 | 172 | ide_hwif_t *hwif = drive->hwif; |
374e042c | 173 | u8 stat = hwif->tp_ops->read_status(hwif); |
1da177e4 | 174 | |
c47137a9 | 175 | if (!OK_STAT(stat, READY_STAT, BAD_STAT)) |
1da177e4 LT |
176 | return ide_error(drive, "recal_intr", stat); |
177 | return ide_stopped; | |
178 | } | |
179 | ||
180 | /* | |
181 | * Handler for commands without a data phase | |
182 | */ | |
1192e528 | 183 | static ide_startstop_t task_no_data_intr(ide_drive_t *drive) |
1da177e4 | 184 | { |
b73c7ee2 BZ |
185 | ide_hwif_t *hwif = drive->hwif; |
186 | ide_task_t *args = hwif->hwgroup->rq->special; | |
1da177e4 LT |
187 | u8 stat; |
188 | ||
366c7f55 | 189 | local_irq_enable_in_hardirq(); |
374e042c | 190 | stat = hwif->tp_ops->read_status(hwif); |
c47137a9 BZ |
191 | |
192 | if (!OK_STAT(stat, READY_STAT, BAD_STAT)) | |
1da177e4 LT |
193 | return ide_error(drive, "task_no_data_intr", stat); |
194 | /* calls ide_end_drive_cmd */ | |
c47137a9 | 195 | |
1da177e4 | 196 | if (args) |
64a57fe4 | 197 | ide_end_drive_cmd(drive, stat, ide_read_error(drive)); |
1da177e4 LT |
198 | |
199 | return ide_stopped; | |
200 | } | |
201 | ||
da6f4c7f | 202 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
1da177e4 | 203 | { |
b73c7ee2 | 204 | ide_hwif_t *hwif = drive->hwif; |
b42fa133 | 205 | int retries; |
1da177e4 LT |
206 | u8 stat; |
207 | ||
208 | /* | |
f54feafa BZ |
209 | * Last sector was transfered, wait until device is ready. This can |
210 | * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms. | |
1da177e4 | 211 | */ |
f54feafa | 212 | for (retries = 0; retries < 1000; retries++) { |
374e042c | 213 | stat = hwif->tp_ops->read_status(hwif); |
c47137a9 BZ |
214 | |
215 | if (stat & BUSY_STAT) | |
b42fa133 MY |
216 | udelay(10); |
217 | else | |
218 | break; | |
219 | } | |
1da177e4 | 220 | |
b42fa133 | 221 | if (stat & BUSY_STAT) |
1da177e4 LT |
222 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
223 | ||
224 | return stat; | |
225 | } | |
226 | ||
92d3ab27 BZ |
227 | static void ide_pio_sector(ide_drive_t *drive, struct request *rq, |
228 | unsigned int write) | |
1da177e4 LT |
229 | { |
230 | ide_hwif_t *hwif = drive->hwif; | |
231 | struct scatterlist *sg = hwif->sg_table; | |
55c16a70 | 232 | struct scatterlist *cursg = hwif->cursg; |
1da177e4 LT |
233 | struct page *page; |
234 | #ifdef CONFIG_HIGHMEM | |
235 | unsigned long flags; | |
236 | #endif | |
237 | unsigned int offset; | |
238 | u8 *buf; | |
239 | ||
55c16a70 JA |
240 | cursg = hwif->cursg; |
241 | if (!cursg) { | |
242 | cursg = sg; | |
243 | hwif->cursg = sg; | |
244 | } | |
245 | ||
45711f1a | 246 | page = sg_page(cursg); |
55c16a70 | 247 | offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE; |
1da177e4 LT |
248 | |
249 | /* get the current page and offset */ | |
250 | page = nth_page(page, (offset >> PAGE_SHIFT)); | |
251 | offset %= PAGE_SIZE; | |
252 | ||
253 | #ifdef CONFIG_HIGHMEM | |
254 | local_irq_save(flags); | |
255 | #endif | |
256 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; | |
257 | ||
258 | hwif->nleft--; | |
259 | hwif->cursg_ofs++; | |
260 | ||
55c16a70 JA |
261 | if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) { |
262 | hwif->cursg = sg_next(hwif->cursg); | |
1da177e4 LT |
263 | hwif->cursg_ofs = 0; |
264 | } | |
265 | ||
266 | /* do the actual data transfer */ | |
267 | if (write) | |
374e042c | 268 | hwif->tp_ops->output_data(drive, rq, buf, SECTOR_SIZE); |
1da177e4 | 269 | else |
374e042c | 270 | hwif->tp_ops->input_data(drive, rq, buf, SECTOR_SIZE); |
1da177e4 LT |
271 | |
272 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); | |
273 | #ifdef CONFIG_HIGHMEM | |
274 | local_irq_restore(flags); | |
275 | #endif | |
276 | } | |
277 | ||
92d3ab27 BZ |
278 | static void ide_pio_multi(ide_drive_t *drive, struct request *rq, |
279 | unsigned int write) | |
1da177e4 LT |
280 | { |
281 | unsigned int nsect; | |
282 | ||
283 | nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count); | |
284 | while (nsect--) | |
92d3ab27 | 285 | ide_pio_sector(drive, rq, write); |
1da177e4 LT |
286 | } |
287 | ||
858119e1 | 288 | static void ide_pio_datablock(ide_drive_t *drive, struct request *rq, |
1da177e4 LT |
289 | unsigned int write) |
290 | { | |
35cf2b94 TH |
291 | u8 saved_io_32bit = drive->io_32bit; |
292 | ||
1da177e4 LT |
293 | if (rq->bio) /* fs request */ |
294 | rq->errors = 0; | |
295 | ||
35cf2b94 TH |
296 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
297 | ide_task_t *task = rq->special; | |
298 | ||
299 | if (task->tf_flags & IDE_TFLAG_IO_16BIT) | |
300 | drive->io_32bit = 0; | |
301 | } | |
302 | ||
651c29a1 AM |
303 | touch_softlockup_watchdog(); |
304 | ||
1da177e4 LT |
305 | switch (drive->hwif->data_phase) { |
306 | case TASKFILE_MULTI_IN: | |
307 | case TASKFILE_MULTI_OUT: | |
92d3ab27 | 308 | ide_pio_multi(drive, rq, write); |
1da177e4 LT |
309 | break; |
310 | default: | |
92d3ab27 | 311 | ide_pio_sector(drive, rq, write); |
1da177e4 LT |
312 | break; |
313 | } | |
35cf2b94 TH |
314 | |
315 | drive->io_32bit = saved_io_32bit; | |
1da177e4 LT |
316 | } |
317 | ||
318 | static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq, | |
319 | const char *s, u8 stat) | |
320 | { | |
321 | if (rq->bio) { | |
322 | ide_hwif_t *hwif = drive->hwif; | |
323 | int sectors = hwif->nsect - hwif->nleft; | |
324 | ||
325 | switch (hwif->data_phase) { | |
326 | case TASKFILE_IN: | |
327 | if (hwif->nleft) | |
328 | break; | |
329 | /* fall through */ | |
330 | case TASKFILE_OUT: | |
331 | sectors--; | |
332 | break; | |
333 | case TASKFILE_MULTI_IN: | |
334 | if (hwif->nleft) | |
335 | break; | |
336 | /* fall through */ | |
337 | case TASKFILE_MULTI_OUT: | |
338 | sectors -= drive->mult_count; | |
339 | default: | |
340 | break; | |
341 | } | |
342 | ||
343 | if (sectors > 0) { | |
344 | ide_driver_t *drv; | |
345 | ||
346 | drv = *(ide_driver_t **)rq->rq_disk->private_data; | |
347 | drv->end_request(drive, 1, sectors); | |
348 | } | |
349 | } | |
350 | return ide_error(drive, s, stat); | |
351 | } | |
352 | ||
4d7a984b | 353 | void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat) |
1da177e4 | 354 | { |
4aff5e23 | 355 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
64a57fe4 | 356 | u8 err = ide_read_error(drive); |
1da177e4 | 357 | |
4d7a984b TH |
358 | ide_end_drive_cmd(drive, stat, err); |
359 | return; | |
1da177e4 LT |
360 | } |
361 | ||
03731fbd RP |
362 | if (rq->rq_disk) { |
363 | ide_driver_t *drv; | |
364 | ||
365 | drv = *(ide_driver_t **)rq->rq_disk->private_data;; | |
79f21b84 | 366 | drv->end_request(drive, 1, rq->nr_sectors); |
03731fbd | 367 | } else |
79f21b84 | 368 | ide_end_request(drive, 1, rq->nr_sectors); |
1da177e4 LT |
369 | } |
370 | ||
6c3c3158 LT |
371 | /* |
372 | * We got an interrupt on a task_in case, but no errors and no DRQ. | |
373 | * | |
374 | * It might be a spurious irq (shared irq), but it might be a | |
375 | * command that had no output. | |
376 | */ | |
377 | static ide_startstop_t task_in_unexpected(ide_drive_t *drive, struct request *rq, u8 stat) | |
378 | { | |
379 | /* Command all done? */ | |
380 | if (OK_STAT(stat, READY_STAT, BUSY_STAT)) { | |
381 | task_end_request(drive, rq, stat); | |
382 | return ide_stopped; | |
383 | } | |
384 | ||
385 | /* Assume it was a spurious irq */ | |
386 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
387 | return ide_started; | |
388 | } | |
389 | ||
1da177e4 LT |
390 | /* |
391 | * Handler for command with PIO data-in phase (Read/Read Multiple). | |
392 | */ | |
f6e29e35 | 393 | static ide_startstop_t task_in_intr(ide_drive_t *drive) |
1da177e4 LT |
394 | { |
395 | ide_hwif_t *hwif = drive->hwif; | |
b73c7ee2 | 396 | struct request *rq = hwif->hwgroup->rq; |
374e042c | 397 | u8 stat = hwif->tp_ops->read_status(hwif); |
1da177e4 | 398 | |
6c3c3158 LT |
399 | /* Error? */ |
400 | if (stat & ERR_STAT) | |
eb63963a | 401 | return task_error(drive, rq, __func__, stat); |
6c3c3158 LT |
402 | |
403 | /* Didn't want any data? Odd. */ | |
404 | if (!(stat & DRQ_STAT)) | |
405 | return task_in_unexpected(drive, rq, stat); | |
1da177e4 LT |
406 | |
407 | ide_pio_datablock(drive, rq, 0); | |
408 | ||
6c3c3158 | 409 | /* Are we done? Check status and finish transfer. */ |
1da177e4 LT |
410 | if (!hwif->nleft) { |
411 | stat = wait_drive_not_busy(drive); | |
73d7de0c | 412 | if (!OK_STAT(stat, 0, BAD_STAT)) |
eb63963a | 413 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
414 | task_end_request(drive, rq, stat); |
415 | return ide_stopped; | |
416 | } | |
417 | ||
418 | /* Still data left to transfer. */ | |
419 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
420 | ||
421 | return ide_started; | |
422 | } | |
1da177e4 LT |
423 | |
424 | /* | |
425 | * Handler for command with PIO data-out phase (Write/Write Multiple). | |
426 | */ | |
427 | static ide_startstop_t task_out_intr (ide_drive_t *drive) | |
428 | { | |
429 | ide_hwif_t *hwif = drive->hwif; | |
430 | struct request *rq = HWGROUP(drive)->rq; | |
374e042c | 431 | u8 stat = hwif->tp_ops->read_status(hwif); |
1da177e4 LT |
432 | |
433 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) | |
eb63963a | 434 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
435 | |
436 | /* Deal with unexpected ATA data phase. */ | |
437 | if (((stat & DRQ_STAT) == 0) ^ !hwif->nleft) | |
eb63963a | 438 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
439 | |
440 | if (!hwif->nleft) { | |
441 | task_end_request(drive, rq, stat); | |
442 | return ide_stopped; | |
443 | } | |
444 | ||
445 | /* Still data left to transfer. */ | |
446 | ide_pio_datablock(drive, rq, 1); | |
447 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
448 | ||
449 | return ide_started; | |
450 | } | |
451 | ||
f6e29e35 | 452 | static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq) |
1da177e4 LT |
453 | { |
454 | ide_startstop_t startstop; | |
455 | ||
4906f3b4 | 456 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, |
1da177e4 LT |
457 | drive->bad_wstat, WAIT_DRQ)) { |
458 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", | |
459 | drive->name, | |
460 | drive->hwif->data_phase ? "MULT" : "", | |
461 | drive->addressing ? "_EXT" : ""); | |
462 | return startstop; | |
463 | } | |
464 | ||
465 | if (!drive->unmask) | |
466 | local_irq_disable(); | |
467 | ||
468 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
469 | ide_pio_datablock(drive, rq, 1); | |
470 | ||
471 | return ide_started; | |
472 | } | |
1da177e4 | 473 | |
ac026ff2 | 474 | int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect) |
1da177e4 | 475 | { |
154ed280 FT |
476 | struct request *rq; |
477 | int error; | |
1da177e4 | 478 | |
154ed280 FT |
479 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
480 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
481 | rq->buffer = buf; | |
1da177e4 LT |
482 | |
483 | /* | |
484 | * (ks) We transfer currently only whole sectors. | |
485 | * This is suffient for now. But, it would be great, | |
486 | * if we would find a solution to transfer any size. | |
487 | * To support special commands like READ LONG. | |
488 | */ | |
154ed280 FT |
489 | rq->hard_nr_sectors = rq->nr_sectors = nsect; |
490 | rq->hard_cur_sectors = rq->current_nr_sectors = nsect; | |
1da177e4 | 491 | |
ac026ff2 | 492 | if (task->tf_flags & IDE_TFLAG_WRITE) |
154ed280 | 493 | rq->cmd_flags |= REQ_RW; |
1da177e4 | 494 | |
154ed280 FT |
495 | rq->special = task; |
496 | task->rq = rq; | |
1da177e4 | 497 | |
154ed280 FT |
498 | error = blk_execute_rq(drive->queue, NULL, rq, 0); |
499 | blk_put_request(rq); | |
500 | ||
501 | return error; | |
1da177e4 LT |
502 | } |
503 | ||
1da177e4 LT |
504 | EXPORT_SYMBOL(ide_raw_taskfile); |
505 | ||
9a3c49be BZ |
506 | int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task) |
507 | { | |
ac026ff2 | 508 | task->data_phase = TASKFILE_NO_DATA; |
9a3c49be | 509 | |
ac026ff2 | 510 | return ide_raw_taskfile(drive, task, NULL, 0); |
9a3c49be BZ |
511 | } |
512 | EXPORT_SYMBOL_GPL(ide_no_data_taskfile); | |
513 | ||
26a5b040 | 514 | #ifdef CONFIG_IDE_TASK_IOCTL |
1da177e4 LT |
515 | int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
516 | { | |
517 | ide_task_request_t *req_task; | |
518 | ide_task_t args; | |
519 | u8 *outbuf = NULL; | |
520 | u8 *inbuf = NULL; | |
ac026ff2 | 521 | u8 *data_buf = NULL; |
1da177e4 LT |
522 | int err = 0; |
523 | int tasksize = sizeof(struct ide_task_request_s); | |
3a42bb22 AC |
524 | unsigned int taskin = 0; |
525 | unsigned int taskout = 0; | |
ac026ff2 | 526 | u16 nsect = 0; |
1da177e4 LT |
527 | char __user *buf = (char __user *)arg; |
528 | ||
529 | // printk("IDE Taskfile ...\n"); | |
530 | ||
f5e3c2fa | 531 | req_task = kzalloc(tasksize, GFP_KERNEL); |
1da177e4 | 532 | if (req_task == NULL) return -ENOMEM; |
1da177e4 LT |
533 | if (copy_from_user(req_task, buf, tasksize)) { |
534 | kfree(req_task); | |
535 | return -EFAULT; | |
536 | } | |
537 | ||
3a42bb22 AC |
538 | taskout = req_task->out_size; |
539 | taskin = req_task->in_size; | |
540 | ||
541 | if (taskin > 65536 || taskout > 65536) { | |
542 | err = -EINVAL; | |
543 | goto abort; | |
544 | } | |
1da177e4 LT |
545 | |
546 | if (taskout) { | |
547 | int outtotal = tasksize; | |
f5e3c2fa | 548 | outbuf = kzalloc(taskout, GFP_KERNEL); |
1da177e4 LT |
549 | if (outbuf == NULL) { |
550 | err = -ENOMEM; | |
551 | goto abort; | |
552 | } | |
1da177e4 LT |
553 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
554 | err = -EFAULT; | |
555 | goto abort; | |
556 | } | |
557 | } | |
558 | ||
559 | if (taskin) { | |
560 | int intotal = tasksize + taskout; | |
f5e3c2fa | 561 | inbuf = kzalloc(taskin, GFP_KERNEL); |
1da177e4 LT |
562 | if (inbuf == NULL) { |
563 | err = -ENOMEM; | |
564 | goto abort; | |
565 | } | |
1da177e4 LT |
566 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
567 | err = -EFAULT; | |
568 | goto abort; | |
569 | } | |
570 | } | |
571 | ||
572 | memset(&args, 0, sizeof(ide_task_t)); | |
1da177e4 | 573 | |
650d841d BZ |
574 | memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); |
575 | memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 BZ |
576 | |
577 | args.data_phase = req_task->data_phase; | |
1da177e4 | 578 | |
657cc1a8 BZ |
579 | args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE | |
580 | IDE_TFLAG_IN_TF; | |
a3bbb9d8 | 581 | if (drive->addressing == 1) |
657cc1a8 | 582 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB); |
a3bbb9d8 | 583 | |
74095a91 BZ |
584 | if (req_task->out_flags.all) { |
585 | args.tf_flags |= IDE_TFLAG_FLAGGED; | |
586 | ||
587 | if (req_task->out_flags.b.data) | |
588 | args.tf_flags |= IDE_TFLAG_OUT_DATA; | |
589 | ||
590 | if (req_task->out_flags.b.nsector_hob) | |
591 | args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; | |
592 | if (req_task->out_flags.b.sector_hob) | |
593 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; | |
594 | if (req_task->out_flags.b.lcyl_hob) | |
595 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; | |
596 | if (req_task->out_flags.b.hcyl_hob) | |
597 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; | |
598 | ||
599 | if (req_task->out_flags.b.error_feature) | |
600 | args.tf_flags |= IDE_TFLAG_OUT_FEATURE; | |
601 | if (req_task->out_flags.b.nsector) | |
602 | args.tf_flags |= IDE_TFLAG_OUT_NSECT; | |
603 | if (req_task->out_flags.b.sector) | |
604 | args.tf_flags |= IDE_TFLAG_OUT_LBAL; | |
605 | if (req_task->out_flags.b.lcyl) | |
606 | args.tf_flags |= IDE_TFLAG_OUT_LBAM; | |
607 | if (req_task->out_flags.b.hcyl) | |
608 | args.tf_flags |= IDE_TFLAG_OUT_LBAH; | |
a3bbb9d8 BZ |
609 | } else { |
610 | args.tf_flags |= IDE_TFLAG_OUT_TF; | |
611 | if (args.tf_flags & IDE_TFLAG_LBA48) | |
612 | args.tf_flags |= IDE_TFLAG_OUT_HOB; | |
74095a91 BZ |
613 | } |
614 | ||
866e2ec9 BZ |
615 | if (req_task->in_flags.b.data) |
616 | args.tf_flags |= IDE_TFLAG_IN_DATA; | |
617 | ||
1da177e4 | 618 | switch(req_task->data_phase) { |
1da177e4 LT |
619 | case TASKFILE_MULTI_OUT: |
620 | if (!drive->mult_count) { | |
621 | /* (hs): give up if multcount is not set */ | |
622 | printk(KERN_ERR "%s: %s Multimode Write " \ | |
623 | "multcount is not set\n", | |
eb63963a | 624 | drive->name, __func__); |
1da177e4 LT |
625 | err = -EPERM; |
626 | goto abort; | |
627 | } | |
628 | /* fall through */ | |
629 | case TASKFILE_OUT: | |
ac026ff2 BZ |
630 | /* fall through */ |
631 | case TASKFILE_OUT_DMAQ: | |
632 | case TASKFILE_OUT_DMA: | |
633 | nsect = taskout / SECTOR_SIZE; | |
634 | data_buf = outbuf; | |
1da177e4 LT |
635 | break; |
636 | case TASKFILE_MULTI_IN: | |
637 | if (!drive->mult_count) { | |
638 | /* (hs): give up if multcount is not set */ | |
639 | printk(KERN_ERR "%s: %s Multimode Read failure " \ | |
640 | "multcount is not set\n", | |
eb63963a | 641 | drive->name, __func__); |
1da177e4 LT |
642 | err = -EPERM; |
643 | goto abort; | |
644 | } | |
645 | /* fall through */ | |
646 | case TASKFILE_IN: | |
ac026ff2 BZ |
647 | /* fall through */ |
648 | case TASKFILE_IN_DMAQ: | |
649 | case TASKFILE_IN_DMA: | |
650 | nsect = taskin / SECTOR_SIZE; | |
651 | data_buf = inbuf; | |
1da177e4 LT |
652 | break; |
653 | case TASKFILE_NO_DATA: | |
1da177e4 LT |
654 | break; |
655 | default: | |
656 | err = -EFAULT; | |
657 | goto abort; | |
658 | } | |
659 | ||
ac026ff2 BZ |
660 | if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) |
661 | nsect = 0; | |
662 | else if (!nsect) { | |
663 | nsect = (args.tf.hob_nsect << 8) | args.tf.nsect; | |
664 | ||
665 | if (!nsect) { | |
666 | printk(KERN_ERR "%s: in/out command without data\n", | |
667 | drive->name); | |
668 | err = -EFAULT; | |
669 | goto abort; | |
670 | } | |
671 | } | |
672 | ||
673 | if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) | |
674 | args.tf_flags |= IDE_TFLAG_WRITE; | |
675 | ||
676 | err = ide_raw_taskfile(drive, &args, data_buf, nsect); | |
677 | ||
650d841d BZ |
678 | memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2); |
679 | memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 BZ |
680 | |
681 | if ((args.tf_flags & IDE_TFLAG_FLAGGED_SET_IN_FLAGS) && | |
682 | req_task->in_flags.all == 0) { | |
683 | req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; | |
684 | if (drive->addressing == 1) | |
685 | req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); | |
686 | } | |
1da177e4 LT |
687 | |
688 | if (copy_to_user(buf, req_task, tasksize)) { | |
689 | err = -EFAULT; | |
690 | goto abort; | |
691 | } | |
692 | if (taskout) { | |
693 | int outtotal = tasksize; | |
694 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { | |
695 | err = -EFAULT; | |
696 | goto abort; | |
697 | } | |
698 | } | |
699 | if (taskin) { | |
700 | int intotal = tasksize + taskout; | |
701 | if (copy_to_user(buf + intotal, inbuf, taskin)) { | |
702 | err = -EFAULT; | |
703 | goto abort; | |
704 | } | |
705 | } | |
706 | abort: | |
707 | kfree(req_task); | |
6044ec88 JJ |
708 | kfree(outbuf); |
709 | kfree(inbuf); | |
1da177e4 LT |
710 | |
711 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); | |
712 | ||
1da177e4 LT |
713 | return err; |
714 | } | |
26a5b040 | 715 | #endif |
1da177e4 | 716 | |
1da177e4 LT |
717 | int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
718 | { | |
5a9e77af BZ |
719 | u8 *buf = NULL; |
720 | int bufsize = 0, err = 0; | |
721 | u8 args[4], xfer_rate = 0; | |
1da177e4 | 722 | ide_task_t tfargs; |
650d841d | 723 | struct ide_taskfile *tf = &tfargs.tf; |
5efe7c54 | 724 | struct hd_driveid *id = drive->id; |
1da177e4 LT |
725 | |
726 | if (NULL == (void *) arg) { | |
154ed280 | 727 | struct request *rq; |
145b75e9 | 728 | |
154ed280 FT |
729 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
730 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
731 | err = blk_execute_rq(drive->queue, NULL, rq, 0); | |
732 | blk_put_request(rq); | |
145b75e9 | 733 | |
154ed280 | 734 | return err; |
1da177e4 LT |
735 | } |
736 | ||
737 | if (copy_from_user(args, (void __user *)arg, 4)) | |
738 | return -EFAULT; | |
739 | ||
740 | memset(&tfargs, 0, sizeof(ide_task_t)); | |
650d841d | 741 | tf->feature = args[2]; |
5a9e77af BZ |
742 | if (args[0] == WIN_SMART) { |
743 | tf->nsect = args[3]; | |
744 | tf->lbal = args[1]; | |
745 | tf->lbam = 0x4f; | |
746 | tf->lbah = 0xc2; | |
747 | tfargs.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_IN_NSECT; | |
748 | } else { | |
749 | tf->nsect = args[1]; | |
750 | tfargs.tf_flags = IDE_TFLAG_OUT_FEATURE | | |
751 | IDE_TFLAG_OUT_NSECT | IDE_TFLAG_IN_NSECT; | |
752 | } | |
650d841d | 753 | tf->command = args[0]; |
5a9e77af | 754 | tfargs.data_phase = args[3] ? TASKFILE_IN : TASKFILE_NO_DATA; |
1da177e4 LT |
755 | |
756 | if (args[3]) { | |
5a9e77af BZ |
757 | tfargs.tf_flags |= IDE_TFLAG_IO_16BIT; |
758 | bufsize = SECTOR_WORDS * 4 * args[3]; | |
759 | buf = kzalloc(bufsize, GFP_KERNEL); | |
760 | if (buf == NULL) | |
1da177e4 | 761 | return -ENOMEM; |
1da177e4 | 762 | } |
5a9e77af | 763 | |
5efe7c54 BZ |
764 | if (tf->command == WIN_SETFEATURES && |
765 | tf->feature == SETFEATURES_XFER && | |
766 | tf->nsect >= XFER_SW_DMA_0 && | |
767 | (id->dma_ultra || id->dma_mword || id->dma_1word)) { | |
1da177e4 | 768 | xfer_rate = args[1]; |
af10f773 BZ |
769 | if (tf->nsect > XFER_UDMA_2 && !eighty_ninty_three(drive)) { |
770 | printk(KERN_WARNING "%s: UDMA speeds >UDMA33 cannot " | |
771 | "be set\n", drive->name); | |
1da177e4 | 772 | goto abort; |
af10f773 | 773 | } |
1da177e4 LT |
774 | } |
775 | ||
5a9e77af BZ |
776 | err = ide_raw_taskfile(drive, &tfargs, buf, args[3]); |
777 | ||
778 | args[0] = tf->status; | |
779 | args[1] = tf->error; | |
780 | args[2] = tf->nsect; | |
1da177e4 LT |
781 | |
782 | if (!err && xfer_rate) { | |
783 | /* active-retuning-calls future */ | |
784 | ide_set_xfer_rate(drive, xfer_rate); | |
785 | ide_driveid_update(drive); | |
786 | } | |
787 | abort: | |
5a9e77af | 788 | if (copy_to_user((void __user *)arg, &args, 4)) |
1da177e4 | 789 | err = -EFAULT; |
5a9e77af BZ |
790 | if (buf) { |
791 | if (copy_to_user((void __user *)(arg + 4), buf, bufsize)) | |
792 | err = -EFAULT; | |
793 | kfree(buf); | |
794 | } | |
1da177e4 LT |
795 | return err; |
796 | } | |
797 | ||
1da177e4 LT |
798 | int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
799 | { | |
800 | void __user *p = (void __user *)arg; | |
801 | int err = 0; | |
14b89ef9 BZ |
802 | u8 args[7]; |
803 | ide_task_t task; | |
1da177e4 LT |
804 | |
805 | if (copy_from_user(args, p, 7)) | |
806 | return -EFAULT; | |
14b89ef9 BZ |
807 | |
808 | memset(&task, 0, sizeof(task)); | |
809 | memcpy(&task.tf_array[7], &args[1], 6); | |
810 | task.tf.command = args[0]; | |
657cc1a8 | 811 | task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
14b89ef9 BZ |
812 | |
813 | err = ide_no_data_taskfile(drive, &task); | |
814 | ||
815 | args[0] = task.tf.command; | |
816 | memcpy(&args[1], &task.tf_array[7], 6); | |
817 | ||
818 | if (copy_to_user(p, args, 7)) | |
1da177e4 | 819 | err = -EFAULT; |
14b89ef9 | 820 | |
1da177e4 LT |
821 | return err; |
822 | } |