Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/drivers/ide/ide-taskfile.c Version 0.38 March 05, 2003 | |
3 | * | |
4 | * Copyright (C) 2000-2002 Michael Cornwell <cornwell@acm.org> | |
5 | * Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org> | |
6 | * Copyright (C) 2001-2002 Klaus Smolin | |
7 | * IBM Storage Technology Division | |
8 | * Copyright (C) 2003-2004 Bartlomiej Zolnierkiewicz | |
9 | * | |
10 | * The big the bad and the ugly. | |
1da177e4 LT |
11 | */ |
12 | ||
1da177e4 LT |
13 | #include <linux/module.h> |
14 | #include <linux/types.h> | |
15 | #include <linux/string.h> | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/timer.h> | |
18 | #include <linux/mm.h> | |
651c29a1 | 19 | #include <linux/sched.h> |
1da177e4 LT |
20 | #include <linux/interrupt.h> |
21 | #include <linux/major.h> | |
22 | #include <linux/errno.h> | |
23 | #include <linux/genhd.h> | |
24 | #include <linux/blkpg.h> | |
25 | #include <linux/slab.h> | |
26 | #include <linux/pci.h> | |
27 | #include <linux/delay.h> | |
28 | #include <linux/hdreg.h> | |
29 | #include <linux/ide.h> | |
30 | #include <linux/bitops.h> | |
55c16a70 | 31 | #include <linux/scatterlist.h> |
1da177e4 LT |
32 | |
33 | #include <asm/byteorder.h> | |
34 | #include <asm/irq.h> | |
35 | #include <asm/uaccess.h> | |
36 | #include <asm/io.h> | |
37 | ||
1da177e4 LT |
38 | static void ata_bswap_data (void *buffer, int wcount) |
39 | { | |
40 | u16 *p = buffer; | |
41 | ||
42 | while (wcount--) { | |
43 | *p = *p << 8 | *p >> 8; p++; | |
44 | *p = *p << 8 | *p >> 8; p++; | |
45 | } | |
46 | } | |
47 | ||
48 | static void taskfile_input_data(ide_drive_t *drive, void *buffer, u32 wcount) | |
49 | { | |
50 | HWIF(drive)->ata_input_data(drive, buffer, wcount); | |
51 | if (drive->bswap) | |
52 | ata_bswap_data(buffer, wcount); | |
53 | } | |
54 | ||
55 | static void taskfile_output_data(ide_drive_t *drive, void *buffer, u32 wcount) | |
56 | { | |
57 | if (drive->bswap) { | |
58 | ata_bswap_data(buffer, wcount); | |
59 | HWIF(drive)->ata_output_data(drive, buffer, wcount); | |
60 | ata_bswap_data(buffer, wcount); | |
61 | } else { | |
62 | HWIF(drive)->ata_output_data(drive, buffer, wcount); | |
63 | } | |
64 | } | |
65 | ||
9e42237f BZ |
66 | void ide_tf_load(ide_drive_t *drive, ide_task_t *task) |
67 | { | |
68 | ide_hwif_t *hwif = drive->hwif; | |
69 | struct ide_taskfile *tf = &task->tf; | |
70 | u8 HIHI = (task->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF; | |
71 | ||
72 | if (IDE_CONTROL_REG) | |
73 | hwif->OUTB(drive->ctl, IDE_CONTROL_REG); /* clear nIEN */ | |
74 | ||
75 | if ((task->tf_flags & IDE_TFLAG_NO_SELECT_MASK) == 0) | |
76 | SELECT_MASK(drive, 0); | |
77 | ||
78 | if (task->tf_flags & IDE_TFLAG_LBA48) { | |
79 | hwif->OUTB(tf->hob_feature, IDE_FEATURE_REG); | |
80 | hwif->OUTB(tf->hob_nsect, IDE_NSECTOR_REG); | |
81 | hwif->OUTB(tf->hob_lbal, IDE_SECTOR_REG); | |
82 | hwif->OUTB(tf->hob_lbam, IDE_LCYL_REG); | |
83 | hwif->OUTB(tf->hob_lbah, IDE_HCYL_REG); | |
84 | } | |
85 | ||
86 | hwif->OUTB(tf->feature, IDE_FEATURE_REG); | |
87 | hwif->OUTB(tf->nsect, IDE_NSECTOR_REG); | |
88 | hwif->OUTB(tf->lbal, IDE_SECTOR_REG); | |
89 | hwif->OUTB(tf->lbam, IDE_LCYL_REG); | |
90 | hwif->OUTB(tf->lbah, IDE_HCYL_REG); | |
91 | ||
92 | hwif->OUTB((tf->device & HIHI) | drive->select.all, IDE_SELECT_REG); | |
93 | } | |
94 | ||
95 | EXPORT_SYMBOL_GPL(ide_tf_load); | |
96 | ||
1da177e4 LT |
97 | int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf) |
98 | { | |
99 | ide_task_t args; | |
650d841d | 100 | |
1da177e4 | 101 | memset(&args, 0, sizeof(ide_task_t)); |
650d841d | 102 | args.tf.nsect = 0x01; |
1da177e4 | 103 | if (drive->media == ide_disk) |
650d841d | 104 | args.tf.command = WIN_IDENTIFY; |
1da177e4 | 105 | else |
650d841d | 106 | args.tf.command = WIN_PIDENTIFY; |
1da177e4 LT |
107 | args.command_type = IDE_DRIVE_TASK_IN; |
108 | args.data_phase = TASKFILE_IN; | |
109 | args.handler = &task_in_intr; | |
110 | return ide_raw_taskfile(drive, &args, buf); | |
111 | } | |
112 | ||
113 | ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task) | |
114 | { | |
115 | ide_hwif_t *hwif = HWIF(drive); | |
650d841d | 116 | struct ide_taskfile *tf = &task->tf; |
1da177e4 | 117 | |
9e42237f BZ |
118 | if (drive->addressing == 1) |
119 | task->tf_flags |= IDE_TFLAG_LBA48; | |
1da177e4 | 120 | |
9e42237f | 121 | ide_tf_load(drive, task); |
1da177e4 LT |
122 | |
123 | if (task->handler != NULL) { | |
124 | if (task->prehandler != NULL) { | |
650d841d | 125 | hwif->OUTBSYNC(drive, tf->command, IDE_COMMAND_REG); |
1da177e4 LT |
126 | ndelay(400); /* FIXME */ |
127 | return task->prehandler(drive, task->rq); | |
128 | } | |
650d841d | 129 | ide_execute_command(drive, tf->command, task->handler, WAIT_WORSTCASE, NULL); |
1da177e4 LT |
130 | return ide_started; |
131 | } | |
132 | ||
133 | if (!drive->using_dma) | |
134 | return ide_stopped; | |
135 | ||
650d841d | 136 | switch (tf->command) { |
1da177e4 LT |
137 | case WIN_WRITEDMA_ONCE: |
138 | case WIN_WRITEDMA: | |
139 | case WIN_WRITEDMA_EXT: | |
140 | case WIN_READDMA_ONCE: | |
141 | case WIN_READDMA: | |
142 | case WIN_READDMA_EXT: | |
143 | case WIN_IDENTIFY_DMA: | |
144 | if (!hwif->dma_setup(drive)) { | |
650d841d | 145 | hwif->dma_exec_cmd(drive, tf->command); |
1da177e4 LT |
146 | hwif->dma_start(drive); |
147 | return ide_started; | |
148 | } | |
149 | break; | |
150 | default: | |
151 | if (task->handler == NULL) | |
152 | return ide_stopped; | |
153 | } | |
154 | ||
155 | return ide_stopped; | |
156 | } | |
157 | ||
1da177e4 LT |
158 | /* |
159 | * set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd. | |
160 | */ | |
161 | ide_startstop_t set_multmode_intr (ide_drive_t *drive) | |
162 | { | |
163 | ide_hwif_t *hwif = HWIF(drive); | |
164 | u8 stat; | |
165 | ||
166 | if (OK_STAT(stat = hwif->INB(IDE_STATUS_REG),READY_STAT,BAD_STAT)) { | |
167 | drive->mult_count = drive->mult_req; | |
168 | } else { | |
169 | drive->mult_req = drive->mult_count = 0; | |
170 | drive->special.b.recalibrate = 1; | |
171 | (void) ide_dump_status(drive, "set_multmode", stat); | |
172 | } | |
173 | return ide_stopped; | |
174 | } | |
175 | ||
176 | /* | |
177 | * set_geometry_intr() is invoked on completion of a WIN_SPECIFY cmd. | |
178 | */ | |
179 | ide_startstop_t set_geometry_intr (ide_drive_t *drive) | |
180 | { | |
181 | ide_hwif_t *hwif = HWIF(drive); | |
182 | int retries = 5; | |
183 | u8 stat; | |
184 | ||
185 | while (((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) && retries--) | |
186 | udelay(10); | |
187 | ||
188 | if (OK_STAT(stat, READY_STAT, BAD_STAT)) | |
189 | return ide_stopped; | |
190 | ||
191 | if (stat & (ERR_STAT|DRQ_STAT)) | |
192 | return ide_error(drive, "set_geometry_intr", stat); | |
193 | ||
125e1874 | 194 | BUG_ON(HWGROUP(drive)->handler != NULL); |
1da177e4 LT |
195 | ide_set_handler(drive, &set_geometry_intr, WAIT_WORSTCASE, NULL); |
196 | return ide_started; | |
197 | } | |
198 | ||
199 | /* | |
200 | * recal_intr() is invoked on completion of a WIN_RESTORE (recalibrate) cmd. | |
201 | */ | |
202 | ide_startstop_t recal_intr (ide_drive_t *drive) | |
203 | { | |
204 | ide_hwif_t *hwif = HWIF(drive); | |
205 | u8 stat; | |
206 | ||
207 | if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG), READY_STAT, BAD_STAT)) | |
208 | return ide_error(drive, "recal_intr", stat); | |
209 | return ide_stopped; | |
210 | } | |
211 | ||
212 | /* | |
213 | * Handler for commands without a data phase | |
214 | */ | |
215 | ide_startstop_t task_no_data_intr (ide_drive_t *drive) | |
216 | { | |
217 | ide_task_t *args = HWGROUP(drive)->rq->special; | |
218 | ide_hwif_t *hwif = HWIF(drive); | |
219 | u8 stat; | |
220 | ||
366c7f55 | 221 | local_irq_enable_in_hardirq(); |
1da177e4 LT |
222 | if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG),READY_STAT,BAD_STAT)) { |
223 | return ide_error(drive, "task_no_data_intr", stat); | |
224 | /* calls ide_end_drive_cmd */ | |
225 | } | |
226 | if (args) | |
227 | ide_end_drive_cmd(drive, stat, hwif->INB(IDE_ERROR_REG)); | |
228 | ||
229 | return ide_stopped; | |
230 | } | |
231 | ||
1da177e4 LT |
232 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
233 | { | |
234 | ide_hwif_t *hwif = HWIF(drive); | |
b42fa133 | 235 | int retries; |
1da177e4 LT |
236 | u8 stat; |
237 | ||
238 | /* | |
239 | * Last sector was transfered, wait until drive is ready. | |
240 | * This can take up to 10 usec, but we will wait max 1 ms | |
241 | * (drive_cmd_intr() waits that long). | |
242 | */ | |
b42fa133 MY |
243 | for (retries = 0; retries < 100; retries++) { |
244 | if ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) | |
245 | udelay(10); | |
246 | else | |
247 | break; | |
248 | } | |
1da177e4 | 249 | |
b42fa133 | 250 | if (stat & BUSY_STAT) |
1da177e4 LT |
251 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
252 | ||
253 | return stat; | |
254 | } | |
255 | ||
256 | static void ide_pio_sector(ide_drive_t *drive, unsigned int write) | |
257 | { | |
258 | ide_hwif_t *hwif = drive->hwif; | |
259 | struct scatterlist *sg = hwif->sg_table; | |
55c16a70 | 260 | struct scatterlist *cursg = hwif->cursg; |
1da177e4 LT |
261 | struct page *page; |
262 | #ifdef CONFIG_HIGHMEM | |
263 | unsigned long flags; | |
264 | #endif | |
265 | unsigned int offset; | |
266 | u8 *buf; | |
267 | ||
55c16a70 JA |
268 | cursg = hwif->cursg; |
269 | if (!cursg) { | |
270 | cursg = sg; | |
271 | hwif->cursg = sg; | |
272 | } | |
273 | ||
45711f1a | 274 | page = sg_page(cursg); |
55c16a70 | 275 | offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE; |
1da177e4 LT |
276 | |
277 | /* get the current page and offset */ | |
278 | page = nth_page(page, (offset >> PAGE_SHIFT)); | |
279 | offset %= PAGE_SIZE; | |
280 | ||
281 | #ifdef CONFIG_HIGHMEM | |
282 | local_irq_save(flags); | |
283 | #endif | |
284 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; | |
285 | ||
286 | hwif->nleft--; | |
287 | hwif->cursg_ofs++; | |
288 | ||
55c16a70 JA |
289 | if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) { |
290 | hwif->cursg = sg_next(hwif->cursg); | |
1da177e4 LT |
291 | hwif->cursg_ofs = 0; |
292 | } | |
293 | ||
294 | /* do the actual data transfer */ | |
295 | if (write) | |
296 | taskfile_output_data(drive, buf, SECTOR_WORDS); | |
297 | else | |
298 | taskfile_input_data(drive, buf, SECTOR_WORDS); | |
299 | ||
300 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); | |
301 | #ifdef CONFIG_HIGHMEM | |
302 | local_irq_restore(flags); | |
303 | #endif | |
304 | } | |
305 | ||
306 | static void ide_pio_multi(ide_drive_t *drive, unsigned int write) | |
307 | { | |
308 | unsigned int nsect; | |
309 | ||
310 | nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count); | |
311 | while (nsect--) | |
312 | ide_pio_sector(drive, write); | |
313 | } | |
314 | ||
858119e1 | 315 | static void ide_pio_datablock(ide_drive_t *drive, struct request *rq, |
1da177e4 LT |
316 | unsigned int write) |
317 | { | |
318 | if (rq->bio) /* fs request */ | |
319 | rq->errors = 0; | |
320 | ||
651c29a1 AM |
321 | touch_softlockup_watchdog(); |
322 | ||
1da177e4 LT |
323 | switch (drive->hwif->data_phase) { |
324 | case TASKFILE_MULTI_IN: | |
325 | case TASKFILE_MULTI_OUT: | |
326 | ide_pio_multi(drive, write); | |
327 | break; | |
328 | default: | |
329 | ide_pio_sector(drive, write); | |
330 | break; | |
331 | } | |
332 | } | |
333 | ||
334 | static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq, | |
335 | const char *s, u8 stat) | |
336 | { | |
337 | if (rq->bio) { | |
338 | ide_hwif_t *hwif = drive->hwif; | |
339 | int sectors = hwif->nsect - hwif->nleft; | |
340 | ||
341 | switch (hwif->data_phase) { | |
342 | case TASKFILE_IN: | |
343 | if (hwif->nleft) | |
344 | break; | |
345 | /* fall through */ | |
346 | case TASKFILE_OUT: | |
347 | sectors--; | |
348 | break; | |
349 | case TASKFILE_MULTI_IN: | |
350 | if (hwif->nleft) | |
351 | break; | |
352 | /* fall through */ | |
353 | case TASKFILE_MULTI_OUT: | |
354 | sectors -= drive->mult_count; | |
355 | default: | |
356 | break; | |
357 | } | |
358 | ||
359 | if (sectors > 0) { | |
360 | ide_driver_t *drv; | |
361 | ||
362 | drv = *(ide_driver_t **)rq->rq_disk->private_data; | |
363 | drv->end_request(drive, 1, sectors); | |
364 | } | |
365 | } | |
366 | return ide_error(drive, s, stat); | |
367 | } | |
368 | ||
369 | static void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat) | |
370 | { | |
55c16a70 JA |
371 | HWIF(drive)->cursg = NULL; |
372 | ||
4aff5e23 | 373 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
1da177e4 LT |
374 | ide_task_t *task = rq->special; |
375 | ||
376 | if (task->tf_out_flags.all) { | |
377 | u8 err = drive->hwif->INB(IDE_ERROR_REG); | |
378 | ide_end_drive_cmd(drive, stat, err); | |
379 | return; | |
380 | } | |
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;; | |
387 | drv->end_request(drive, 1, rq->hard_nr_sectors); | |
388 | } else | |
389 | ide_end_request(drive, 1, rq->hard_nr_sectors); | |
1da177e4 LT |
390 | } |
391 | ||
392 | /* | |
393 | * Handler for command with PIO data-in phase (Read/Read Multiple). | |
394 | */ | |
395 | ide_startstop_t task_in_intr (ide_drive_t *drive) | |
396 | { | |
397 | ide_hwif_t *hwif = drive->hwif; | |
398 | struct request *rq = HWGROUP(drive)->rq; | |
399 | u8 stat = hwif->INB(IDE_STATUS_REG); | |
400 | ||
401 | /* new way for dealing with premature shared PCI interrupts */ | |
402 | if (!OK_STAT(stat, DATA_READY, BAD_R_STAT)) { | |
403 | if (stat & (ERR_STAT | DRQ_STAT)) | |
404 | return task_error(drive, rq, __FUNCTION__, stat); | |
405 | /* No data yet, so wait for another IRQ. */ | |
406 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
407 | return ide_started; | |
408 | } | |
409 | ||
410 | ide_pio_datablock(drive, rq, 0); | |
411 | ||
412 | /* If it was the last datablock check status and finish transfer. */ | |
413 | if (!hwif->nleft) { | |
414 | stat = wait_drive_not_busy(drive); | |
415 | if (!OK_STAT(stat, 0, BAD_R_STAT)) | |
416 | return task_error(drive, rq, __FUNCTION__, stat); | |
417 | task_end_request(drive, rq, stat); | |
418 | return ide_stopped; | |
419 | } | |
420 | ||
421 | /* Still data left to transfer. */ | |
422 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
423 | ||
424 | return ide_started; | |
425 | } | |
426 | EXPORT_SYMBOL(task_in_intr); | |
427 | ||
428 | /* | |
429 | * Handler for command with PIO data-out phase (Write/Write Multiple). | |
430 | */ | |
431 | static ide_startstop_t task_out_intr (ide_drive_t *drive) | |
432 | { | |
433 | ide_hwif_t *hwif = drive->hwif; | |
434 | struct request *rq = HWGROUP(drive)->rq; | |
435 | u8 stat = hwif->INB(IDE_STATUS_REG); | |
436 | ||
437 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) | |
438 | return task_error(drive, rq, __FUNCTION__, stat); | |
439 | ||
440 | /* Deal with unexpected ATA data phase. */ | |
441 | if (((stat & DRQ_STAT) == 0) ^ !hwif->nleft) | |
442 | return task_error(drive, rq, __FUNCTION__, stat); | |
443 | ||
444 | if (!hwif->nleft) { | |
445 | task_end_request(drive, rq, stat); | |
446 | return ide_stopped; | |
447 | } | |
448 | ||
449 | /* Still data left to transfer. */ | |
450 | ide_pio_datablock(drive, rq, 1); | |
451 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
452 | ||
453 | return ide_started; | |
454 | } | |
455 | ||
456 | ide_startstop_t pre_task_out_intr (ide_drive_t *drive, struct request *rq) | |
457 | { | |
458 | ide_startstop_t startstop; | |
459 | ||
460 | if (ide_wait_stat(&startstop, drive, DATA_READY, | |
461 | drive->bad_wstat, WAIT_DRQ)) { | |
462 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", | |
463 | drive->name, | |
464 | drive->hwif->data_phase ? "MULT" : "", | |
465 | drive->addressing ? "_EXT" : ""); | |
466 | return startstop; | |
467 | } | |
468 | ||
469 | if (!drive->unmask) | |
470 | local_irq_disable(); | |
471 | ||
472 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
473 | ide_pio_datablock(drive, rq, 1); | |
474 | ||
475 | return ide_started; | |
476 | } | |
477 | EXPORT_SYMBOL(pre_task_out_intr); | |
478 | ||
479 | static int ide_diag_taskfile(ide_drive_t *drive, ide_task_t *args, unsigned long data_size, u8 *buf) | |
480 | { | |
481 | struct request rq; | |
482 | ||
483 | memset(&rq, 0, sizeof(rq)); | |
02ac2460 | 484 | rq.ref_count = 1; |
4aff5e23 | 485 | rq.cmd_type = REQ_TYPE_ATA_TASKFILE; |
1da177e4 LT |
486 | rq.buffer = buf; |
487 | ||
488 | /* | |
489 | * (ks) We transfer currently only whole sectors. | |
490 | * This is suffient for now. But, it would be great, | |
491 | * if we would find a solution to transfer any size. | |
492 | * To support special commands like READ LONG. | |
493 | */ | |
494 | if (args->command_type != IDE_DRIVE_TASK_NO_DATA) { | |
495 | if (data_size == 0) | |
650d841d | 496 | rq.nr_sectors = (args->tf.hob_nsect << 8) | args->tf.nsect; |
1da177e4 LT |
497 | else |
498 | rq.nr_sectors = data_size / SECTOR_SIZE; | |
499 | ||
500 | if (!rq.nr_sectors) { | |
501 | printk(KERN_ERR "%s: in/out command without data\n", | |
502 | drive->name); | |
503 | return -EFAULT; | |
504 | } | |
505 | ||
506 | rq.hard_nr_sectors = rq.nr_sectors; | |
507 | rq.hard_cur_sectors = rq.current_nr_sectors = rq.nr_sectors; | |
508 | ||
509 | if (args->command_type == IDE_DRIVE_TASK_RAW_WRITE) | |
4aff5e23 | 510 | rq.cmd_flags |= REQ_RW; |
1da177e4 LT |
511 | } |
512 | ||
513 | rq.special = args; | |
ef0f6a43 | 514 | args->rq = &rq; |
1da177e4 LT |
515 | return ide_do_drive_cmd(drive, &rq, ide_wait); |
516 | } | |
517 | ||
518 | int ide_raw_taskfile (ide_drive_t *drive, ide_task_t *args, u8 *buf) | |
519 | { | |
520 | return ide_diag_taskfile(drive, args, 0, buf); | |
521 | } | |
522 | ||
523 | EXPORT_SYMBOL(ide_raw_taskfile); | |
524 | ||
9a3c49be BZ |
525 | int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task) |
526 | { | |
527 | task->command_type = IDE_DRIVE_TASK_NO_DATA; | |
528 | task->data_phase = TASKFILE_NO_DATA; | |
529 | task->handler = task_no_data_intr; | |
530 | ||
531 | return ide_raw_taskfile(drive, task, NULL); | |
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; | |
1da177e4 LT |
542 | int err = 0; |
543 | int tasksize = sizeof(struct ide_task_request_s); | |
3a42bb22 AC |
544 | unsigned int taskin = 0; |
545 | unsigned int taskout = 0; | |
1da177e4 LT |
546 | u8 io_32bit = drive->io_32bit; |
547 | char __user *buf = (char __user *)arg; | |
548 | ||
549 | // printk("IDE Taskfile ...\n"); | |
550 | ||
f5e3c2fa | 551 | req_task = kzalloc(tasksize, GFP_KERNEL); |
1da177e4 | 552 | if (req_task == NULL) return -ENOMEM; |
1da177e4 LT |
553 | if (copy_from_user(req_task, buf, tasksize)) { |
554 | kfree(req_task); | |
555 | return -EFAULT; | |
556 | } | |
557 | ||
3a42bb22 AC |
558 | taskout = req_task->out_size; |
559 | taskin = req_task->in_size; | |
560 | ||
561 | if (taskin > 65536 || taskout > 65536) { | |
562 | err = -EINVAL; | |
563 | goto abort; | |
564 | } | |
1da177e4 LT |
565 | |
566 | if (taskout) { | |
567 | int outtotal = tasksize; | |
f5e3c2fa | 568 | outbuf = kzalloc(taskout, GFP_KERNEL); |
1da177e4 LT |
569 | if (outbuf == NULL) { |
570 | err = -ENOMEM; | |
571 | goto abort; | |
572 | } | |
1da177e4 LT |
573 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
574 | err = -EFAULT; | |
575 | goto abort; | |
576 | } | |
577 | } | |
578 | ||
579 | if (taskin) { | |
580 | int intotal = tasksize + taskout; | |
f5e3c2fa | 581 | inbuf = kzalloc(taskin, GFP_KERNEL); |
1da177e4 LT |
582 | if (inbuf == NULL) { |
583 | err = -ENOMEM; | |
584 | goto abort; | |
585 | } | |
1da177e4 LT |
586 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
587 | err = -EFAULT; | |
588 | goto abort; | |
589 | } | |
590 | } | |
591 | ||
592 | memset(&args, 0, sizeof(ide_task_t)); | |
1da177e4 | 593 | |
650d841d BZ |
594 | memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); |
595 | memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE); | |
1da177e4 LT |
596 | args.tf_in_flags = req_task->in_flags; |
597 | args.tf_out_flags = req_task->out_flags; | |
598 | args.data_phase = req_task->data_phase; | |
599 | args.command_type = req_task->req_cmd; | |
600 | ||
601 | drive->io_32bit = 0; | |
602 | switch(req_task->data_phase) { | |
603 | case TASKFILE_OUT_DMAQ: | |
604 | case TASKFILE_OUT_DMA: | |
605 | err = ide_diag_taskfile(drive, &args, taskout, outbuf); | |
606 | break; | |
607 | case TASKFILE_IN_DMAQ: | |
608 | case TASKFILE_IN_DMA: | |
609 | err = ide_diag_taskfile(drive, &args, taskin, inbuf); | |
610 | break; | |
611 | case TASKFILE_MULTI_OUT: | |
612 | if (!drive->mult_count) { | |
613 | /* (hs): give up if multcount is not set */ | |
614 | printk(KERN_ERR "%s: %s Multimode Write " \ | |
615 | "multcount is not set\n", | |
616 | drive->name, __FUNCTION__); | |
617 | err = -EPERM; | |
618 | goto abort; | |
619 | } | |
620 | /* fall through */ | |
621 | case TASKFILE_OUT: | |
622 | args.prehandler = &pre_task_out_intr; | |
623 | args.handler = &task_out_intr; | |
624 | err = ide_diag_taskfile(drive, &args, taskout, outbuf); | |
625 | break; | |
626 | case TASKFILE_MULTI_IN: | |
627 | if (!drive->mult_count) { | |
628 | /* (hs): give up if multcount is not set */ | |
629 | printk(KERN_ERR "%s: %s Multimode Read failure " \ | |
630 | "multcount is not set\n", | |
631 | drive->name, __FUNCTION__); | |
632 | err = -EPERM; | |
633 | goto abort; | |
634 | } | |
635 | /* fall through */ | |
636 | case TASKFILE_IN: | |
637 | args.handler = &task_in_intr; | |
638 | err = ide_diag_taskfile(drive, &args, taskin, inbuf); | |
639 | break; | |
640 | case TASKFILE_NO_DATA: | |
641 | args.handler = &task_no_data_intr; | |
642 | err = ide_diag_taskfile(drive, &args, 0, NULL); | |
643 | break; | |
644 | default: | |
645 | err = -EFAULT; | |
646 | goto abort; | |
647 | } | |
648 | ||
650d841d BZ |
649 | memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2); |
650 | memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE); | |
1da177e4 LT |
651 | req_task->in_flags = args.tf_in_flags; |
652 | req_task->out_flags = args.tf_out_flags; | |
653 | ||
654 | if (copy_to_user(buf, req_task, tasksize)) { | |
655 | err = -EFAULT; | |
656 | goto abort; | |
657 | } | |
658 | if (taskout) { | |
659 | int outtotal = tasksize; | |
660 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { | |
661 | err = -EFAULT; | |
662 | goto abort; | |
663 | } | |
664 | } | |
665 | if (taskin) { | |
666 | int intotal = tasksize + taskout; | |
667 | if (copy_to_user(buf + intotal, inbuf, taskin)) { | |
668 | err = -EFAULT; | |
669 | goto abort; | |
670 | } | |
671 | } | |
672 | abort: | |
673 | kfree(req_task); | |
6044ec88 JJ |
674 | kfree(outbuf); |
675 | kfree(inbuf); | |
1da177e4 LT |
676 | |
677 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); | |
678 | ||
679 | drive->io_32bit = io_32bit; | |
680 | ||
681 | return err; | |
682 | } | |
26a5b040 | 683 | #endif |
1da177e4 LT |
684 | |
685 | int ide_wait_cmd (ide_drive_t *drive, u8 cmd, u8 nsect, u8 feature, u8 sectors, u8 *buf) | |
686 | { | |
687 | struct request rq; | |
688 | u8 buffer[4]; | |
689 | ||
690 | if (!buf) | |
691 | buf = buffer; | |
692 | memset(buf, 0, 4 + SECTOR_WORDS * 4 * sectors); | |
693 | ide_init_drive_cmd(&rq); | |
694 | rq.buffer = buf; | |
695 | *buf++ = cmd; | |
696 | *buf++ = nsect; | |
697 | *buf++ = feature; | |
698 | *buf++ = sectors; | |
699 | return ide_do_drive_cmd(drive, &rq, ide_wait); | |
700 | } | |
701 | ||
1da177e4 LT |
702 | int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
703 | { | |
704 | int err = 0; | |
705 | u8 args[4], *argbuf = args; | |
706 | u8 xfer_rate = 0; | |
707 | int argsize = 4; | |
708 | ide_task_t tfargs; | |
650d841d | 709 | struct ide_taskfile *tf = &tfargs.tf; |
1da177e4 LT |
710 | |
711 | if (NULL == (void *) arg) { | |
712 | struct request rq; | |
713 | ide_init_drive_cmd(&rq); | |
714 | return ide_do_drive_cmd(drive, &rq, ide_wait); | |
715 | } | |
716 | ||
717 | if (copy_from_user(args, (void __user *)arg, 4)) | |
718 | return -EFAULT; | |
719 | ||
720 | memset(&tfargs, 0, sizeof(ide_task_t)); | |
650d841d BZ |
721 | tf->feature = args[2]; |
722 | tf->nsect = args[3]; | |
723 | tf->lbal = args[1]; | |
724 | tf->command = args[0]; | |
1da177e4 LT |
725 | |
726 | if (args[3]) { | |
727 | argsize = 4 + (SECTOR_WORDS * 4 * args[3]); | |
f5e3c2fa | 728 | argbuf = kzalloc(argsize, GFP_KERNEL); |
1da177e4 LT |
729 | if (argbuf == NULL) |
730 | return -ENOMEM; | |
1da177e4 LT |
731 | } |
732 | if (set_transfer(drive, &tfargs)) { | |
733 | xfer_rate = args[1]; | |
734 | if (ide_ata66_check(drive, &tfargs)) | |
735 | goto abort; | |
736 | } | |
737 | ||
738 | err = ide_wait_cmd(drive, args[0], args[1], args[2], args[3], argbuf); | |
739 | ||
740 | if (!err && xfer_rate) { | |
741 | /* active-retuning-calls future */ | |
742 | ide_set_xfer_rate(drive, xfer_rate); | |
743 | ide_driveid_update(drive); | |
744 | } | |
745 | abort: | |
746 | if (copy_to_user((void __user *)arg, argbuf, argsize)) | |
747 | err = -EFAULT; | |
748 | if (argsize > 4) | |
749 | kfree(argbuf); | |
750 | return err; | |
751 | } | |
752 | ||
753 | static int ide_wait_cmd_task(ide_drive_t *drive, u8 *buf) | |
754 | { | |
755 | struct request rq; | |
756 | ||
757 | ide_init_drive_cmd(&rq); | |
4aff5e23 | 758 | rq.cmd_type = REQ_TYPE_ATA_TASK; |
1da177e4 LT |
759 | rq.buffer = buf; |
760 | return ide_do_drive_cmd(drive, &rq, ide_wait); | |
761 | } | |
762 | ||
1da177e4 LT |
763 | int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
764 | { | |
765 | void __user *p = (void __user *)arg; | |
766 | int err = 0; | |
767 | u8 args[7], *argbuf = args; | |
768 | int argsize = 7; | |
769 | ||
770 | if (copy_from_user(args, p, 7)) | |
771 | return -EFAULT; | |
772 | err = ide_wait_cmd_task(drive, argbuf); | |
773 | if (copy_to_user(p, argbuf, argsize)) | |
774 | err = -EFAULT; | |
775 | return err; | |
776 | } | |
777 | ||
778 | /* | |
779 | * NOTICE: This is additions from IBM to provide a discrete interface, | |
780 | * for selective taskregister access operations. Nice JOB Klaus!!! | |
781 | * Glad to be able to work and co-develop this with you and IBM. | |
782 | */ | |
783 | ide_startstop_t flagged_taskfile (ide_drive_t *drive, ide_task_t *task) | |
784 | { | |
785 | ide_hwif_t *hwif = HWIF(drive); | |
650d841d | 786 | struct ide_taskfile *tf = &task->tf; |
1da177e4 LT |
787 | |
788 | if (task->data_phase == TASKFILE_MULTI_IN || | |
789 | task->data_phase == TASKFILE_MULTI_OUT) { | |
790 | if (!drive->mult_count) { | |
791 | printk(KERN_ERR "%s: multimode not set!\n", drive->name); | |
792 | return ide_stopped; | |
793 | } | |
794 | } | |
795 | ||
796 | /* | |
e07bc709 | 797 | * (ks) Check taskfile in flags. |
1da177e4 LT |
798 | * If set, then execute as it is defined. |
799 | * If not set, then define default settings. | |
800 | * The default values are: | |
e07bc709 BZ |
801 | * read all taskfile registers (except data) |
802 | * read the hob registers (sector, nsector, lcyl, hcyl) | |
1da177e4 | 803 | */ |
1da177e4 LT |
804 | if (task->tf_in_flags.all == 0) { |
805 | task->tf_in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; | |
806 | if (drive->addressing == 1) | |
807 | task->tf_in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); | |
808 | } | |
809 | ||
810 | /* ALL Command Block Executions SHALL clear nIEN, unless otherwise */ | |
811 | if (IDE_CONTROL_REG) | |
812 | /* clear nIEN */ | |
813 | hwif->OUTB(drive->ctl, IDE_CONTROL_REG); | |
814 | SELECT_MASK(drive, 0); | |
815 | ||
650d841d BZ |
816 | if (task->tf_out_flags.b.data) |
817 | hwif->OUTW((tf->hob_data << 8) | tf->data, IDE_DATA_REG); | |
1da177e4 LT |
818 | |
819 | /* (ks) send hob registers first */ | |
820 | if (task->tf_out_flags.b.nsector_hob) | |
650d841d | 821 | hwif->OUTB(tf->hob_nsect, IDE_NSECTOR_REG); |
1da177e4 | 822 | if (task->tf_out_flags.b.sector_hob) |
650d841d | 823 | hwif->OUTB(tf->hob_lbal, IDE_SECTOR_REG); |
1da177e4 | 824 | if (task->tf_out_flags.b.lcyl_hob) |
650d841d | 825 | hwif->OUTB(tf->hob_lbam, IDE_LCYL_REG); |
1da177e4 | 826 | if (task->tf_out_flags.b.hcyl_hob) |
650d841d | 827 | hwif->OUTB(tf->hob_lbah, IDE_HCYL_REG); |
1da177e4 LT |
828 | |
829 | /* (ks) Send now the standard registers */ | |
830 | if (task->tf_out_flags.b.error_feature) | |
650d841d | 831 | hwif->OUTB(tf->feature, IDE_FEATURE_REG); |
1da177e4 LT |
832 | /* refers to number of sectors to transfer */ |
833 | if (task->tf_out_flags.b.nsector) | |
650d841d | 834 | hwif->OUTB(tf->nsect, IDE_NSECTOR_REG); |
1da177e4 LT |
835 | /* refers to sector offset or start sector */ |
836 | if (task->tf_out_flags.b.sector) | |
650d841d | 837 | hwif->OUTB(tf->lbal, IDE_SECTOR_REG); |
1da177e4 | 838 | if (task->tf_out_flags.b.lcyl) |
650d841d | 839 | hwif->OUTB(tf->lbam, IDE_LCYL_REG); |
1da177e4 | 840 | if (task->tf_out_flags.b.hcyl) |
650d841d | 841 | hwif->OUTB(tf->lbah, IDE_HCYL_REG); |
1da177e4 LT |
842 | |
843 | /* | |
844 | * (ks) In the flagged taskfile approch, we will use all specified | |
845 | * registers and the register value will not be changed, except the | |
846 | * select bit (master/slave) in the drive_head register. We must make | |
847 | * sure that the desired drive is selected. | |
848 | */ | |
650d841d | 849 | hwif->OUTB(tf->device | drive->select.all, IDE_SELECT_REG); |
1da177e4 LT |
850 | switch(task->data_phase) { |
851 | ||
852 | case TASKFILE_OUT_DMAQ: | |
853 | case TASKFILE_OUT_DMA: | |
854 | case TASKFILE_IN_DMAQ: | |
855 | case TASKFILE_IN_DMA: | |
eda5b359 BZ |
856 | if (!drive->using_dma) |
857 | break; | |
858 | ||
dd35b7bb | 859 | if (!hwif->dma_setup(drive)) { |
650d841d | 860 | hwif->dma_exec_cmd(drive, tf->command); |
dd35b7bb BZ |
861 | hwif->dma_start(drive); |
862 | return ide_started; | |
863 | } | |
1da177e4 LT |
864 | break; |
865 | ||
866 | default: | |
867 | if (task->handler == NULL) | |
868 | return ide_stopped; | |
869 | ||
870 | /* Issue the command */ | |
871 | if (task->prehandler) { | |
650d841d | 872 | hwif->OUTBSYNC(drive, tf->command, IDE_COMMAND_REG); |
1da177e4 LT |
873 | ndelay(400); /* FIXME */ |
874 | return task->prehandler(drive, task->rq); | |
875 | } | |
650d841d | 876 | ide_execute_command(drive, tf->command, task->handler, WAIT_WORSTCASE, NULL); |
dd35b7bb | 877 | return ide_started; |
1da177e4 LT |
878 | } |
879 | ||
dd35b7bb | 880 | return ide_stopped; |
1da177e4 | 881 | } |