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/module.h> |
12 | #include <linux/types.h> | |
13 | #include <linux/string.h> | |
14 | #include <linux/kernel.h> | |
15 | #include <linux/timer.h> | |
16 | #include <linux/mm.h> | |
651c29a1 | 17 | #include <linux/sched.h> |
1da177e4 LT |
18 | #include <linux/interrupt.h> |
19 | #include <linux/major.h> | |
20 | #include <linux/errno.h> | |
21 | #include <linux/genhd.h> | |
22 | #include <linux/blkpg.h> | |
23 | #include <linux/slab.h> | |
24 | #include <linux/pci.h> | |
25 | #include <linux/delay.h> | |
26 | #include <linux/hdreg.h> | |
27 | #include <linux/ide.h> | |
28 | #include <linux/bitops.h> | |
55c16a70 | 29 | #include <linux/scatterlist.h> |
1da177e4 LT |
30 | |
31 | #include <asm/byteorder.h> | |
32 | #include <asm/irq.h> | |
33 | #include <asm/uaccess.h> | |
34 | #include <asm/io.h> | |
35 | ||
089c5c7e | 36 | void ide_tf_dump(const char *s, struct ide_taskfile *tf) |
9e42237f | 37 | { |
807e35d6 BZ |
38 | #ifdef DEBUG |
39 | printk("%s: tf: feat 0x%02x nsect 0x%02x lbal 0x%02x " | |
40 | "lbam 0x%02x lbah 0x%02x dev 0x%02x cmd 0x%02x\n", | |
089c5c7e | 41 | s, tf->feature, tf->nsect, tf->lbal, |
807e35d6 | 42 | tf->lbam, tf->lbah, tf->device, tf->command); |
6dd9b837 BZ |
43 | printk("%s: hob: nsect 0x%02x lbal 0x%02x " |
44 | "lbam 0x%02x lbah 0x%02x\n", | |
089c5c7e | 45 | s, tf->hob_nsect, tf->hob_lbal, |
6dd9b837 | 46 | tf->hob_lbam, tf->hob_lbah); |
807e35d6 | 47 | #endif |
089c5c7e BZ |
48 | } |
49 | ||
1da177e4 LT |
50 | int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf) |
51 | { | |
52 | ide_task_t args; | |
650d841d | 53 | |
1da177e4 | 54 | memset(&args, 0, sizeof(ide_task_t)); |
650d841d | 55 | args.tf.nsect = 0x01; |
1da177e4 | 56 | if (drive->media == ide_disk) |
650d841d | 57 | args.tf.command = WIN_IDENTIFY; |
1da177e4 | 58 | else |
650d841d | 59 | args.tf.command = WIN_PIDENTIFY; |
657cc1a8 | 60 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
ac026ff2 | 61 | args.data_phase = TASKFILE_IN; |
ac026ff2 | 62 | return ide_raw_taskfile(drive, &args, buf, 1); |
1da177e4 LT |
63 | } |
64 | ||
74095a91 BZ |
65 | static int inline task_dma_ok(ide_task_t *task) |
66 | { | |
f6e29e35 | 67 | if (blk_fs_request(task->rq) || (task->tf_flags & IDE_TFLAG_FLAGGED)) |
74095a91 BZ |
68 | return 1; |
69 | ||
70 | switch (task->tf.command) { | |
71 | case WIN_WRITEDMA_ONCE: | |
72 | case WIN_WRITEDMA: | |
73 | case WIN_WRITEDMA_EXT: | |
74 | case WIN_READDMA_ONCE: | |
75 | case WIN_READDMA: | |
76 | case WIN_READDMA_EXT: | |
77 | case WIN_IDENTIFY_DMA: | |
78 | return 1; | |
79 | } | |
80 | ||
81 | return 0; | |
82 | } | |
83 | ||
1192e528 | 84 | static ide_startstop_t task_no_data_intr(ide_drive_t *); |
57d7366b BZ |
85 | static ide_startstop_t set_geometry_intr(ide_drive_t *); |
86 | static ide_startstop_t recal_intr(ide_drive_t *); | |
87 | static ide_startstop_t set_multmode_intr(ide_drive_t *); | |
f6e29e35 BZ |
88 | static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *); |
89 | static ide_startstop_t task_in_intr(ide_drive_t *); | |
1192e528 | 90 | |
1da177e4 LT |
91 | ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task) |
92 | { | |
93 | ide_hwif_t *hwif = HWIF(drive); | |
650d841d | 94 | struct ide_taskfile *tf = &task->tf; |
57d7366b | 95 | ide_handler_t *handler = NULL; |
f37afdac | 96 | const struct ide_dma_ops *dma_ops = hwif->dma_ops; |
1da177e4 | 97 | |
1edee60e BZ |
98 | if (task->data_phase == TASKFILE_MULTI_IN || |
99 | task->data_phase == TASKFILE_MULTI_OUT) { | |
100 | if (!drive->mult_count) { | |
101 | printk(KERN_ERR "%s: multimode not set!\n", | |
102 | drive->name); | |
103 | return ide_stopped; | |
104 | } | |
105 | } | |
106 | ||
107 | if (task->tf_flags & IDE_TFLAG_FLAGGED) | |
108 | task->tf_flags |= IDE_TFLAG_FLAGGED_SET_IN_FLAGS; | |
109 | ||
089c5c7e BZ |
110 | if ((task->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) { |
111 | ide_tf_dump(drive->name, tf); | |
ed4af48f BZ |
112 | ide_set_irq(drive, 1); |
113 | SELECT_MASK(drive, 0); | |
94cd5b62 | 114 | hwif->tf_load(drive, task); |
089c5c7e | 115 | } |
1da177e4 | 116 | |
10d90157 BZ |
117 | switch (task->data_phase) { |
118 | case TASKFILE_MULTI_OUT: | |
119 | case TASKFILE_OUT: | |
4c3032d8 | 120 | hwif->OUTBSYNC(drive, tf->command, hwif->io_ports.command_addr); |
10d90157 BZ |
121 | ndelay(400); /* FIXME */ |
122 | return pre_task_out_intr(drive, task->rq); | |
123 | case TASKFILE_MULTI_IN: | |
124 | case TASKFILE_IN: | |
57d7366b | 125 | handler = task_in_intr; |
1192e528 | 126 | /* fall-through */ |
10d90157 | 127 | case TASKFILE_NO_DATA: |
57d7366b BZ |
128 | if (handler == NULL) |
129 | handler = task_no_data_intr; | |
1192e528 | 130 | /* WIN_{SPECIFY,RESTORE,SETMULT} use custom handlers */ |
57d7366b BZ |
131 | if (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) { |
132 | switch (tf->command) { | |
133 | case WIN_SPECIFY: handler = set_geometry_intr; break; | |
134 | case WIN_RESTORE: handler = recal_intr; break; | |
135 | case WIN_SETMULT: handler = set_multmode_intr; break; | |
136 | } | |
137 | } | |
138 | ide_execute_command(drive, tf->command, handler, | |
139 | WAIT_WORSTCASE, NULL); | |
1da177e4 | 140 | return ide_started; |
10d90157 BZ |
141 | default: |
142 | if (task_dma_ok(task) == 0 || drive->using_dma == 0 || | |
5e37bdc0 | 143 | dma_ops->dma_setup(drive)) |
10d90157 | 144 | return ide_stopped; |
5e37bdc0 BZ |
145 | dma_ops->dma_exec_cmd(drive, tf->command); |
146 | dma_ops->dma_start(drive); | |
74095a91 | 147 | return ide_started; |
1da177e4 | 148 | } |
1da177e4 | 149 | } |
f6e29e35 | 150 | EXPORT_SYMBOL_GPL(do_rw_taskfile); |
1da177e4 | 151 | |
1da177e4 LT |
152 | /* |
153 | * set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd. | |
154 | */ | |
57d7366b | 155 | static ide_startstop_t set_multmode_intr(ide_drive_t *drive) |
1da177e4 | 156 | { |
c47137a9 | 157 | u8 stat = ide_read_status(drive); |
1da177e4 | 158 | |
c47137a9 | 159 | if (OK_STAT(stat, READY_STAT, BAD_STAT)) |
1da177e4 | 160 | drive->mult_count = drive->mult_req; |
c47137a9 | 161 | else { |
1da177e4 LT |
162 | drive->mult_req = drive->mult_count = 0; |
163 | drive->special.b.recalibrate = 1; | |
164 | (void) ide_dump_status(drive, "set_multmode", stat); | |
165 | } | |
166 | return ide_stopped; | |
167 | } | |
168 | ||
169 | /* | |
170 | * set_geometry_intr() is invoked on completion of a WIN_SPECIFY cmd. | |
171 | */ | |
57d7366b | 172 | static ide_startstop_t set_geometry_intr(ide_drive_t *drive) |
1da177e4 | 173 | { |
1da177e4 LT |
174 | int retries = 5; |
175 | u8 stat; | |
176 | ||
c47137a9 | 177 | while (((stat = ide_read_status(drive)) & BUSY_STAT) && retries--) |
1da177e4 LT |
178 | udelay(10); |
179 | ||
180 | if (OK_STAT(stat, READY_STAT, BAD_STAT)) | |
181 | return ide_stopped; | |
182 | ||
183 | if (stat & (ERR_STAT|DRQ_STAT)) | |
184 | return ide_error(drive, "set_geometry_intr", stat); | |
185 | ||
125e1874 | 186 | BUG_ON(HWGROUP(drive)->handler != NULL); |
1da177e4 LT |
187 | ide_set_handler(drive, &set_geometry_intr, WAIT_WORSTCASE, NULL); |
188 | return ide_started; | |
189 | } | |
190 | ||
191 | /* | |
192 | * recal_intr() is invoked on completion of a WIN_RESTORE (recalibrate) cmd. | |
193 | */ | |
57d7366b | 194 | static ide_startstop_t recal_intr(ide_drive_t *drive) |
1da177e4 | 195 | { |
c47137a9 | 196 | u8 stat = ide_read_status(drive); |
1da177e4 | 197 | |
c47137a9 | 198 | if (!OK_STAT(stat, READY_STAT, BAD_STAT)) |
1da177e4 LT |
199 | return ide_error(drive, "recal_intr", stat); |
200 | return ide_stopped; | |
201 | } | |
202 | ||
203 | /* | |
204 | * Handler for commands without a data phase | |
205 | */ | |
1192e528 | 206 | static ide_startstop_t task_no_data_intr(ide_drive_t *drive) |
1da177e4 LT |
207 | { |
208 | ide_task_t *args = HWGROUP(drive)->rq->special; | |
1da177e4 LT |
209 | u8 stat; |
210 | ||
366c7f55 | 211 | local_irq_enable_in_hardirq(); |
c47137a9 BZ |
212 | stat = ide_read_status(drive); |
213 | ||
214 | if (!OK_STAT(stat, READY_STAT, BAD_STAT)) | |
1da177e4 LT |
215 | return ide_error(drive, "task_no_data_intr", stat); |
216 | /* calls ide_end_drive_cmd */ | |
c47137a9 | 217 | |
1da177e4 | 218 | if (args) |
64a57fe4 | 219 | ide_end_drive_cmd(drive, stat, ide_read_error(drive)); |
1da177e4 LT |
220 | |
221 | return ide_stopped; | |
222 | } | |
223 | ||
da6f4c7f | 224 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
1da177e4 | 225 | { |
b42fa133 | 226 | int retries; |
1da177e4 LT |
227 | u8 stat; |
228 | ||
229 | /* | |
f54feafa BZ |
230 | * Last sector was transfered, wait until device is ready. This can |
231 | * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms. | |
1da177e4 | 232 | */ |
f54feafa | 233 | for (retries = 0; retries < 1000; retries++) { |
c47137a9 BZ |
234 | stat = ide_read_status(drive); |
235 | ||
236 | if (stat & BUSY_STAT) | |
b42fa133 MY |
237 | udelay(10); |
238 | else | |
239 | break; | |
240 | } | |
1da177e4 | 241 | |
b42fa133 | 242 | if (stat & BUSY_STAT) |
1da177e4 LT |
243 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
244 | ||
245 | return stat; | |
246 | } | |
247 | ||
92d3ab27 BZ |
248 | static void ide_pio_sector(ide_drive_t *drive, struct request *rq, |
249 | unsigned int write) | |
1da177e4 LT |
250 | { |
251 | ide_hwif_t *hwif = drive->hwif; | |
252 | struct scatterlist *sg = hwif->sg_table; | |
55c16a70 | 253 | struct scatterlist *cursg = hwif->cursg; |
1da177e4 LT |
254 | struct page *page; |
255 | #ifdef CONFIG_HIGHMEM | |
256 | unsigned long flags; | |
257 | #endif | |
258 | unsigned int offset; | |
259 | u8 *buf; | |
260 | ||
55c16a70 JA |
261 | cursg = hwif->cursg; |
262 | if (!cursg) { | |
263 | cursg = sg; | |
264 | hwif->cursg = sg; | |
265 | } | |
266 | ||
45711f1a | 267 | page = sg_page(cursg); |
55c16a70 | 268 | offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE; |
1da177e4 LT |
269 | |
270 | /* get the current page and offset */ | |
271 | page = nth_page(page, (offset >> PAGE_SHIFT)); | |
272 | offset %= PAGE_SIZE; | |
273 | ||
274 | #ifdef CONFIG_HIGHMEM | |
275 | local_irq_save(flags); | |
276 | #endif | |
277 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; | |
278 | ||
279 | hwif->nleft--; | |
280 | hwif->cursg_ofs++; | |
281 | ||
55c16a70 JA |
282 | if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) { |
283 | hwif->cursg = sg_next(hwif->cursg); | |
1da177e4 LT |
284 | hwif->cursg_ofs = 0; |
285 | } | |
286 | ||
287 | /* do the actual data transfer */ | |
288 | if (write) | |
9567b349 | 289 | hwif->output_data(drive, rq, buf, SECTOR_SIZE); |
1da177e4 | 290 | else |
9567b349 | 291 | hwif->input_data(drive, rq, buf, SECTOR_SIZE); |
1da177e4 LT |
292 | |
293 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); | |
294 | #ifdef CONFIG_HIGHMEM | |
295 | local_irq_restore(flags); | |
296 | #endif | |
297 | } | |
298 | ||
92d3ab27 BZ |
299 | static void ide_pio_multi(ide_drive_t *drive, struct request *rq, |
300 | unsigned int write) | |
1da177e4 LT |
301 | { |
302 | unsigned int nsect; | |
303 | ||
304 | nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count); | |
305 | while (nsect--) | |
92d3ab27 | 306 | ide_pio_sector(drive, rq, write); |
1da177e4 LT |
307 | } |
308 | ||
858119e1 | 309 | static void ide_pio_datablock(ide_drive_t *drive, struct request *rq, |
1da177e4 LT |
310 | unsigned int write) |
311 | { | |
35cf2b94 TH |
312 | u8 saved_io_32bit = drive->io_32bit; |
313 | ||
1da177e4 LT |
314 | if (rq->bio) /* fs request */ |
315 | rq->errors = 0; | |
316 | ||
35cf2b94 TH |
317 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
318 | ide_task_t *task = rq->special; | |
319 | ||
320 | if (task->tf_flags & IDE_TFLAG_IO_16BIT) | |
321 | drive->io_32bit = 0; | |
322 | } | |
323 | ||
651c29a1 AM |
324 | touch_softlockup_watchdog(); |
325 | ||
1da177e4 LT |
326 | switch (drive->hwif->data_phase) { |
327 | case TASKFILE_MULTI_IN: | |
328 | case TASKFILE_MULTI_OUT: | |
92d3ab27 | 329 | ide_pio_multi(drive, rq, write); |
1da177e4 LT |
330 | break; |
331 | default: | |
92d3ab27 | 332 | ide_pio_sector(drive, rq, write); |
1da177e4 LT |
333 | break; |
334 | } | |
35cf2b94 TH |
335 | |
336 | drive->io_32bit = saved_io_32bit; | |
1da177e4 LT |
337 | } |
338 | ||
339 | static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq, | |
340 | const char *s, u8 stat) | |
341 | { | |
342 | if (rq->bio) { | |
343 | ide_hwif_t *hwif = drive->hwif; | |
344 | int sectors = hwif->nsect - hwif->nleft; | |
345 | ||
346 | switch (hwif->data_phase) { | |
347 | case TASKFILE_IN: | |
348 | if (hwif->nleft) | |
349 | break; | |
350 | /* fall through */ | |
351 | case TASKFILE_OUT: | |
352 | sectors--; | |
353 | break; | |
354 | case TASKFILE_MULTI_IN: | |
355 | if (hwif->nleft) | |
356 | break; | |
357 | /* fall through */ | |
358 | case TASKFILE_MULTI_OUT: | |
359 | sectors -= drive->mult_count; | |
360 | default: | |
361 | break; | |
362 | } | |
363 | ||
364 | if (sectors > 0) { | |
365 | ide_driver_t *drv; | |
366 | ||
367 | drv = *(ide_driver_t **)rq->rq_disk->private_data; | |
368 | drv->end_request(drive, 1, sectors); | |
369 | } | |
370 | } | |
371 | return ide_error(drive, s, stat); | |
372 | } | |
373 | ||
4d7a984b | 374 | void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat) |
1da177e4 | 375 | { |
4aff5e23 | 376 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
64a57fe4 | 377 | u8 err = ide_read_error(drive); |
1da177e4 | 378 | |
4d7a984b TH |
379 | ide_end_drive_cmd(drive, stat, err); |
380 | return; | |
1da177e4 LT |
381 | } |
382 | ||
03731fbd RP |
383 | if (rq->rq_disk) { |
384 | ide_driver_t *drv; | |
385 | ||
386 | drv = *(ide_driver_t **)rq->rq_disk->private_data;; | |
79f21b84 | 387 | drv->end_request(drive, 1, rq->nr_sectors); |
03731fbd | 388 | } else |
79f21b84 | 389 | ide_end_request(drive, 1, rq->nr_sectors); |
1da177e4 LT |
390 | } |
391 | ||
6c3c3158 LT |
392 | /* |
393 | * We got an interrupt on a task_in case, but no errors and no DRQ. | |
394 | * | |
395 | * It might be a spurious irq (shared irq), but it might be a | |
396 | * command that had no output. | |
397 | */ | |
398 | static ide_startstop_t task_in_unexpected(ide_drive_t *drive, struct request *rq, u8 stat) | |
399 | { | |
400 | /* Command all done? */ | |
401 | if (OK_STAT(stat, READY_STAT, BUSY_STAT)) { | |
402 | task_end_request(drive, rq, stat); | |
403 | return ide_stopped; | |
404 | } | |
405 | ||
406 | /* Assume it was a spurious irq */ | |
407 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
408 | return ide_started; | |
409 | } | |
410 | ||
1da177e4 LT |
411 | /* |
412 | * Handler for command with PIO data-in phase (Read/Read Multiple). | |
413 | */ | |
f6e29e35 | 414 | static ide_startstop_t task_in_intr(ide_drive_t *drive) |
1da177e4 LT |
415 | { |
416 | ide_hwif_t *hwif = drive->hwif; | |
417 | struct request *rq = HWGROUP(drive)->rq; | |
c47137a9 | 418 | u8 stat = ide_read_status(drive); |
1da177e4 | 419 | |
6c3c3158 LT |
420 | /* Error? */ |
421 | if (stat & ERR_STAT) | |
eb63963a | 422 | return task_error(drive, rq, __func__, stat); |
6c3c3158 LT |
423 | |
424 | /* Didn't want any data? Odd. */ | |
425 | if (!(stat & DRQ_STAT)) | |
426 | return task_in_unexpected(drive, rq, stat); | |
1da177e4 LT |
427 | |
428 | ide_pio_datablock(drive, rq, 0); | |
429 | ||
6c3c3158 | 430 | /* Are we done? Check status and finish transfer. */ |
1da177e4 LT |
431 | if (!hwif->nleft) { |
432 | stat = wait_drive_not_busy(drive); | |
73d7de0c | 433 | if (!OK_STAT(stat, 0, BAD_STAT)) |
eb63963a | 434 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
435 | task_end_request(drive, rq, stat); |
436 | return ide_stopped; | |
437 | } | |
438 | ||
439 | /* Still data left to transfer. */ | |
440 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
441 | ||
442 | return ide_started; | |
443 | } | |
1da177e4 LT |
444 | |
445 | /* | |
446 | * Handler for command with PIO data-out phase (Write/Write Multiple). | |
447 | */ | |
448 | static ide_startstop_t task_out_intr (ide_drive_t *drive) | |
449 | { | |
450 | ide_hwif_t *hwif = drive->hwif; | |
451 | struct request *rq = HWGROUP(drive)->rq; | |
c47137a9 | 452 | u8 stat = ide_read_status(drive); |
1da177e4 LT |
453 | |
454 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) | |
eb63963a | 455 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
456 | |
457 | /* Deal with unexpected ATA data phase. */ | |
458 | if (((stat & DRQ_STAT) == 0) ^ !hwif->nleft) | |
eb63963a | 459 | return task_error(drive, rq, __func__, stat); |
1da177e4 LT |
460 | |
461 | if (!hwif->nleft) { | |
462 | task_end_request(drive, rq, stat); | |
463 | return ide_stopped; | |
464 | } | |
465 | ||
466 | /* Still data left to transfer. */ | |
467 | ide_pio_datablock(drive, rq, 1); | |
468 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
469 | ||
470 | return ide_started; | |
471 | } | |
472 | ||
f6e29e35 | 473 | static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq) |
1da177e4 LT |
474 | { |
475 | ide_startstop_t startstop; | |
476 | ||
4906f3b4 | 477 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, |
1da177e4 LT |
478 | drive->bad_wstat, WAIT_DRQ)) { |
479 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", | |
480 | drive->name, | |
481 | drive->hwif->data_phase ? "MULT" : "", | |
482 | drive->addressing ? "_EXT" : ""); | |
483 | return startstop; | |
484 | } | |
485 | ||
486 | if (!drive->unmask) | |
487 | local_irq_disable(); | |
488 | ||
489 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
490 | ide_pio_datablock(drive, rq, 1); | |
491 | ||
492 | return ide_started; | |
493 | } | |
1da177e4 | 494 | |
ac026ff2 | 495 | int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect) |
1da177e4 | 496 | { |
154ed280 FT |
497 | struct request *rq; |
498 | int error; | |
1da177e4 | 499 | |
154ed280 FT |
500 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
501 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
502 | rq->buffer = buf; | |
1da177e4 LT |
503 | |
504 | /* | |
505 | * (ks) We transfer currently only whole sectors. | |
506 | * This is suffient for now. But, it would be great, | |
507 | * if we would find a solution to transfer any size. | |
508 | * To support special commands like READ LONG. | |
509 | */ | |
154ed280 FT |
510 | rq->hard_nr_sectors = rq->nr_sectors = nsect; |
511 | rq->hard_cur_sectors = rq->current_nr_sectors = nsect; | |
1da177e4 | 512 | |
ac026ff2 | 513 | if (task->tf_flags & IDE_TFLAG_WRITE) |
154ed280 | 514 | rq->cmd_flags |= REQ_RW; |
1da177e4 | 515 | |
154ed280 FT |
516 | rq->special = task; |
517 | task->rq = rq; | |
1da177e4 | 518 | |
154ed280 FT |
519 | error = blk_execute_rq(drive->queue, NULL, rq, 0); |
520 | blk_put_request(rq); | |
521 | ||
522 | return error; | |
1da177e4 LT |
523 | } |
524 | ||
1da177e4 LT |
525 | EXPORT_SYMBOL(ide_raw_taskfile); |
526 | ||
9a3c49be BZ |
527 | int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task) |
528 | { | |
ac026ff2 | 529 | task->data_phase = TASKFILE_NO_DATA; |
9a3c49be | 530 | |
ac026ff2 | 531 | return ide_raw_taskfile(drive, task, NULL, 0); |
9a3c49be BZ |
532 | } |
533 | EXPORT_SYMBOL_GPL(ide_no_data_taskfile); | |
534 | ||
26a5b040 | 535 | #ifdef CONFIG_IDE_TASK_IOCTL |
1da177e4 LT |
536 | int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
537 | { | |
538 | ide_task_request_t *req_task; | |
539 | ide_task_t args; | |
540 | u8 *outbuf = NULL; | |
541 | u8 *inbuf = NULL; | |
ac026ff2 | 542 | u8 *data_buf = NULL; |
1da177e4 LT |
543 | int err = 0; |
544 | int tasksize = sizeof(struct ide_task_request_s); | |
3a42bb22 AC |
545 | unsigned int taskin = 0; |
546 | unsigned int taskout = 0; | |
ac026ff2 | 547 | u16 nsect = 0; |
1da177e4 LT |
548 | char __user *buf = (char __user *)arg; |
549 | ||
550 | // printk("IDE Taskfile ...\n"); | |
551 | ||
f5e3c2fa | 552 | req_task = kzalloc(tasksize, GFP_KERNEL); |
1da177e4 | 553 | if (req_task == NULL) return -ENOMEM; |
1da177e4 LT |
554 | if (copy_from_user(req_task, buf, tasksize)) { |
555 | kfree(req_task); | |
556 | return -EFAULT; | |
557 | } | |
558 | ||
3a42bb22 AC |
559 | taskout = req_task->out_size; |
560 | taskin = req_task->in_size; | |
561 | ||
562 | if (taskin > 65536 || taskout > 65536) { | |
563 | err = -EINVAL; | |
564 | goto abort; | |
565 | } | |
1da177e4 LT |
566 | |
567 | if (taskout) { | |
568 | int outtotal = tasksize; | |
f5e3c2fa | 569 | outbuf = kzalloc(taskout, GFP_KERNEL); |
1da177e4 LT |
570 | if (outbuf == NULL) { |
571 | err = -ENOMEM; | |
572 | goto abort; | |
573 | } | |
1da177e4 LT |
574 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
575 | err = -EFAULT; | |
576 | goto abort; | |
577 | } | |
578 | } | |
579 | ||
580 | if (taskin) { | |
581 | int intotal = tasksize + taskout; | |
f5e3c2fa | 582 | inbuf = kzalloc(taskin, GFP_KERNEL); |
1da177e4 LT |
583 | if (inbuf == NULL) { |
584 | err = -ENOMEM; | |
585 | goto abort; | |
586 | } | |
1da177e4 LT |
587 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
588 | err = -EFAULT; | |
589 | goto abort; | |
590 | } | |
591 | } | |
592 | ||
593 | memset(&args, 0, sizeof(ide_task_t)); | |
1da177e4 | 594 | |
650d841d BZ |
595 | memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); |
596 | memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 BZ |
597 | |
598 | args.data_phase = req_task->data_phase; | |
1da177e4 | 599 | |
657cc1a8 BZ |
600 | args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE | |
601 | IDE_TFLAG_IN_TF; | |
a3bbb9d8 | 602 | if (drive->addressing == 1) |
657cc1a8 | 603 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB); |
a3bbb9d8 | 604 | |
74095a91 BZ |
605 | if (req_task->out_flags.all) { |
606 | args.tf_flags |= IDE_TFLAG_FLAGGED; | |
607 | ||
608 | if (req_task->out_flags.b.data) | |
609 | args.tf_flags |= IDE_TFLAG_OUT_DATA; | |
610 | ||
611 | if (req_task->out_flags.b.nsector_hob) | |
612 | args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; | |
613 | if (req_task->out_flags.b.sector_hob) | |
614 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; | |
615 | if (req_task->out_flags.b.lcyl_hob) | |
616 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; | |
617 | if (req_task->out_flags.b.hcyl_hob) | |
618 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; | |
619 | ||
620 | if (req_task->out_flags.b.error_feature) | |
621 | args.tf_flags |= IDE_TFLAG_OUT_FEATURE; | |
622 | if (req_task->out_flags.b.nsector) | |
623 | args.tf_flags |= IDE_TFLAG_OUT_NSECT; | |
624 | if (req_task->out_flags.b.sector) | |
625 | args.tf_flags |= IDE_TFLAG_OUT_LBAL; | |
626 | if (req_task->out_flags.b.lcyl) | |
627 | args.tf_flags |= IDE_TFLAG_OUT_LBAM; | |
628 | if (req_task->out_flags.b.hcyl) | |
629 | args.tf_flags |= IDE_TFLAG_OUT_LBAH; | |
a3bbb9d8 BZ |
630 | } else { |
631 | args.tf_flags |= IDE_TFLAG_OUT_TF; | |
632 | if (args.tf_flags & IDE_TFLAG_LBA48) | |
633 | args.tf_flags |= IDE_TFLAG_OUT_HOB; | |
74095a91 BZ |
634 | } |
635 | ||
866e2ec9 BZ |
636 | if (req_task->in_flags.b.data) |
637 | args.tf_flags |= IDE_TFLAG_IN_DATA; | |
638 | ||
1da177e4 | 639 | switch(req_task->data_phase) { |
1da177e4 LT |
640 | case TASKFILE_MULTI_OUT: |
641 | if (!drive->mult_count) { | |
642 | /* (hs): give up if multcount is not set */ | |
643 | printk(KERN_ERR "%s: %s Multimode Write " \ | |
644 | "multcount is not set\n", | |
eb63963a | 645 | drive->name, __func__); |
1da177e4 LT |
646 | err = -EPERM; |
647 | goto abort; | |
648 | } | |
649 | /* fall through */ | |
650 | case TASKFILE_OUT: | |
ac026ff2 BZ |
651 | /* fall through */ |
652 | case TASKFILE_OUT_DMAQ: | |
653 | case TASKFILE_OUT_DMA: | |
654 | nsect = taskout / SECTOR_SIZE; | |
655 | data_buf = outbuf; | |
1da177e4 LT |
656 | break; |
657 | case TASKFILE_MULTI_IN: | |
658 | if (!drive->mult_count) { | |
659 | /* (hs): give up if multcount is not set */ | |
660 | printk(KERN_ERR "%s: %s Multimode Read failure " \ | |
661 | "multcount is not set\n", | |
eb63963a | 662 | drive->name, __func__); |
1da177e4 LT |
663 | err = -EPERM; |
664 | goto abort; | |
665 | } | |
666 | /* fall through */ | |
667 | case TASKFILE_IN: | |
ac026ff2 BZ |
668 | /* fall through */ |
669 | case TASKFILE_IN_DMAQ: | |
670 | case TASKFILE_IN_DMA: | |
671 | nsect = taskin / SECTOR_SIZE; | |
672 | data_buf = inbuf; | |
1da177e4 LT |
673 | break; |
674 | case TASKFILE_NO_DATA: | |
1da177e4 LT |
675 | break; |
676 | default: | |
677 | err = -EFAULT; | |
678 | goto abort; | |
679 | } | |
680 | ||
ac026ff2 BZ |
681 | if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) |
682 | nsect = 0; | |
683 | else if (!nsect) { | |
684 | nsect = (args.tf.hob_nsect << 8) | args.tf.nsect; | |
685 | ||
686 | if (!nsect) { | |
687 | printk(KERN_ERR "%s: in/out command without data\n", | |
688 | drive->name); | |
689 | err = -EFAULT; | |
690 | goto abort; | |
691 | } | |
692 | } | |
693 | ||
694 | if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) | |
695 | args.tf_flags |= IDE_TFLAG_WRITE; | |
696 | ||
697 | err = ide_raw_taskfile(drive, &args, data_buf, nsect); | |
698 | ||
650d841d BZ |
699 | memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2); |
700 | memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE); | |
866e2ec9 BZ |
701 | |
702 | if ((args.tf_flags & IDE_TFLAG_FLAGGED_SET_IN_FLAGS) && | |
703 | req_task->in_flags.all == 0) { | |
704 | req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; | |
705 | if (drive->addressing == 1) | |
706 | req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); | |
707 | } | |
1da177e4 LT |
708 | |
709 | if (copy_to_user(buf, req_task, tasksize)) { | |
710 | err = -EFAULT; | |
711 | goto abort; | |
712 | } | |
713 | if (taskout) { | |
714 | int outtotal = tasksize; | |
715 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { | |
716 | err = -EFAULT; | |
717 | goto abort; | |
718 | } | |
719 | } | |
720 | if (taskin) { | |
721 | int intotal = tasksize + taskout; | |
722 | if (copy_to_user(buf + intotal, inbuf, taskin)) { | |
723 | err = -EFAULT; | |
724 | goto abort; | |
725 | } | |
726 | } | |
727 | abort: | |
728 | kfree(req_task); | |
6044ec88 JJ |
729 | kfree(outbuf); |
730 | kfree(inbuf); | |
1da177e4 LT |
731 | |
732 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); | |
733 | ||
1da177e4 LT |
734 | return err; |
735 | } | |
26a5b040 | 736 | #endif |
1da177e4 | 737 | |
1da177e4 LT |
738 | int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
739 | { | |
5a9e77af BZ |
740 | u8 *buf = NULL; |
741 | int bufsize = 0, err = 0; | |
742 | u8 args[4], xfer_rate = 0; | |
1da177e4 | 743 | ide_task_t tfargs; |
650d841d | 744 | struct ide_taskfile *tf = &tfargs.tf; |
5efe7c54 | 745 | struct hd_driveid *id = drive->id; |
1da177e4 LT |
746 | |
747 | if (NULL == (void *) arg) { | |
154ed280 | 748 | struct request *rq; |
145b75e9 | 749 | |
154ed280 FT |
750 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
751 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; | |
752 | err = blk_execute_rq(drive->queue, NULL, rq, 0); | |
753 | blk_put_request(rq); | |
145b75e9 | 754 | |
154ed280 | 755 | return err; |
1da177e4 LT |
756 | } |
757 | ||
758 | if (copy_from_user(args, (void __user *)arg, 4)) | |
759 | return -EFAULT; | |
760 | ||
761 | memset(&tfargs, 0, sizeof(ide_task_t)); | |
650d841d | 762 | tf->feature = args[2]; |
5a9e77af BZ |
763 | if (args[0] == WIN_SMART) { |
764 | tf->nsect = args[3]; | |
765 | tf->lbal = args[1]; | |
766 | tf->lbam = 0x4f; | |
767 | tf->lbah = 0xc2; | |
768 | tfargs.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_IN_NSECT; | |
769 | } else { | |
770 | tf->nsect = args[1]; | |
771 | tfargs.tf_flags = IDE_TFLAG_OUT_FEATURE | | |
772 | IDE_TFLAG_OUT_NSECT | IDE_TFLAG_IN_NSECT; | |
773 | } | |
650d841d | 774 | tf->command = args[0]; |
5a9e77af | 775 | tfargs.data_phase = args[3] ? TASKFILE_IN : TASKFILE_NO_DATA; |
1da177e4 LT |
776 | |
777 | if (args[3]) { | |
5a9e77af BZ |
778 | tfargs.tf_flags |= IDE_TFLAG_IO_16BIT; |
779 | bufsize = SECTOR_WORDS * 4 * args[3]; | |
780 | buf = kzalloc(bufsize, GFP_KERNEL); | |
781 | if (buf == NULL) | |
1da177e4 | 782 | return -ENOMEM; |
1da177e4 | 783 | } |
5a9e77af | 784 | |
5efe7c54 BZ |
785 | if (tf->command == WIN_SETFEATURES && |
786 | tf->feature == SETFEATURES_XFER && | |
787 | tf->nsect >= XFER_SW_DMA_0 && | |
788 | (id->dma_ultra || id->dma_mword || id->dma_1word)) { | |
1da177e4 | 789 | xfer_rate = args[1]; |
af10f773 BZ |
790 | if (tf->nsect > XFER_UDMA_2 && !eighty_ninty_three(drive)) { |
791 | printk(KERN_WARNING "%s: UDMA speeds >UDMA33 cannot " | |
792 | "be set\n", drive->name); | |
1da177e4 | 793 | goto abort; |
af10f773 | 794 | } |
1da177e4 LT |
795 | } |
796 | ||
5a9e77af BZ |
797 | err = ide_raw_taskfile(drive, &tfargs, buf, args[3]); |
798 | ||
799 | args[0] = tf->status; | |
800 | args[1] = tf->error; | |
801 | args[2] = tf->nsect; | |
1da177e4 LT |
802 | |
803 | if (!err && xfer_rate) { | |
804 | /* active-retuning-calls future */ | |
805 | ide_set_xfer_rate(drive, xfer_rate); | |
806 | ide_driveid_update(drive); | |
807 | } | |
808 | abort: | |
5a9e77af | 809 | if (copy_to_user((void __user *)arg, &args, 4)) |
1da177e4 | 810 | err = -EFAULT; |
5a9e77af BZ |
811 | if (buf) { |
812 | if (copy_to_user((void __user *)(arg + 4), buf, bufsize)) | |
813 | err = -EFAULT; | |
814 | kfree(buf); | |
815 | } | |
1da177e4 LT |
816 | return err; |
817 | } | |
818 | ||
1da177e4 LT |
819 | int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
820 | { | |
821 | void __user *p = (void __user *)arg; | |
822 | int err = 0; | |
14b89ef9 BZ |
823 | u8 args[7]; |
824 | ide_task_t task; | |
1da177e4 LT |
825 | |
826 | if (copy_from_user(args, p, 7)) | |
827 | return -EFAULT; | |
14b89ef9 BZ |
828 | |
829 | memset(&task, 0, sizeof(task)); | |
830 | memcpy(&task.tf_array[7], &args[1], 6); | |
831 | task.tf.command = args[0]; | |
657cc1a8 | 832 | task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
14b89ef9 BZ |
833 | |
834 | err = ide_no_data_taskfile(drive, &task); | |
835 | ||
836 | args[0] = task.tf.command; | |
837 | memcpy(&args[1], &task.tf_array[7], 6); | |
838 | ||
839 | if (copy_to_user(p, args, 7)) | |
1da177e4 | 840 | err = -EFAULT; |
14b89ef9 | 841 | |
1da177e4 LT |
842 | return err; |
843 | } |