Commit | Line | Data |
---|---|---|
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 | ||
232 | EXPORT_SYMBOL(task_no_data_intr); | |
233 | ||
234 | static u8 wait_drive_not_busy(ide_drive_t *drive) | |
235 | { | |
236 | ide_hwif_t *hwif = HWIF(drive); | |
b42fa133 | 237 | int retries; |
1da177e4 LT |
238 | u8 stat; |
239 | ||
240 | /* | |
241 | * Last sector was transfered, wait until drive is ready. | |
242 | * This can take up to 10 usec, but we will wait max 1 ms | |
243 | * (drive_cmd_intr() waits that long). | |
244 | */ | |
b42fa133 MY |
245 | for (retries = 0; retries < 100; retries++) { |
246 | if ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) | |
247 | udelay(10); | |
248 | else | |
249 | break; | |
250 | } | |
1da177e4 | 251 | |
b42fa133 | 252 | if (stat & BUSY_STAT) |
1da177e4 LT |
253 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
254 | ||
255 | return stat; | |
256 | } | |
257 | ||
258 | static void ide_pio_sector(ide_drive_t *drive, unsigned int write) | |
259 | { | |
260 | ide_hwif_t *hwif = drive->hwif; | |
261 | struct scatterlist *sg = hwif->sg_table; | |
55c16a70 | 262 | struct scatterlist *cursg = hwif->cursg; |
1da177e4 LT |
263 | struct page *page; |
264 | #ifdef CONFIG_HIGHMEM | |
265 | unsigned long flags; | |
266 | #endif | |
267 | unsigned int offset; | |
268 | u8 *buf; | |
269 | ||
55c16a70 JA |
270 | cursg = hwif->cursg; |
271 | if (!cursg) { | |
272 | cursg = sg; | |
273 | hwif->cursg = sg; | |
274 | } | |
275 | ||
45711f1a | 276 | page = sg_page(cursg); |
55c16a70 | 277 | offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE; |
1da177e4 LT |
278 | |
279 | /* get the current page and offset */ | |
280 | page = nth_page(page, (offset >> PAGE_SHIFT)); | |
281 | offset %= PAGE_SIZE; | |
282 | ||
283 | #ifdef CONFIG_HIGHMEM | |
284 | local_irq_save(flags); | |
285 | #endif | |
286 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; | |
287 | ||
288 | hwif->nleft--; | |
289 | hwif->cursg_ofs++; | |
290 | ||
55c16a70 JA |
291 | if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) { |
292 | hwif->cursg = sg_next(hwif->cursg); | |
1da177e4 LT |
293 | hwif->cursg_ofs = 0; |
294 | } | |
295 | ||
296 | /* do the actual data transfer */ | |
297 | if (write) | |
298 | taskfile_output_data(drive, buf, SECTOR_WORDS); | |
299 | else | |
300 | taskfile_input_data(drive, buf, SECTOR_WORDS); | |
301 | ||
302 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); | |
303 | #ifdef CONFIG_HIGHMEM | |
304 | local_irq_restore(flags); | |
305 | #endif | |
306 | } | |
307 | ||
308 | static void ide_pio_multi(ide_drive_t *drive, unsigned int write) | |
309 | { | |
310 | unsigned int nsect; | |
311 | ||
312 | nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count); | |
313 | while (nsect--) | |
314 | ide_pio_sector(drive, write); | |
315 | } | |
316 | ||
858119e1 | 317 | static void ide_pio_datablock(ide_drive_t *drive, struct request *rq, |
1da177e4 LT |
318 | unsigned int write) |
319 | { | |
320 | if (rq->bio) /* fs request */ | |
321 | rq->errors = 0; | |
322 | ||
651c29a1 AM |
323 | touch_softlockup_watchdog(); |
324 | ||
1da177e4 LT |
325 | switch (drive->hwif->data_phase) { |
326 | case TASKFILE_MULTI_IN: | |
327 | case TASKFILE_MULTI_OUT: | |
328 | ide_pio_multi(drive, write); | |
329 | break; | |
330 | default: | |
331 | ide_pio_sector(drive, write); | |
332 | break; | |
333 | } | |
334 | } | |
335 | ||
336 | static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq, | |
337 | const char *s, u8 stat) | |
338 | { | |
339 | if (rq->bio) { | |
340 | ide_hwif_t *hwif = drive->hwif; | |
341 | int sectors = hwif->nsect - hwif->nleft; | |
342 | ||
343 | switch (hwif->data_phase) { | |
344 | case TASKFILE_IN: | |
345 | if (hwif->nleft) | |
346 | break; | |
347 | /* fall through */ | |
348 | case TASKFILE_OUT: | |
349 | sectors--; | |
350 | break; | |
351 | case TASKFILE_MULTI_IN: | |
352 | if (hwif->nleft) | |
353 | break; | |
354 | /* fall through */ | |
355 | case TASKFILE_MULTI_OUT: | |
356 | sectors -= drive->mult_count; | |
357 | default: | |
358 | break; | |
359 | } | |
360 | ||
361 | if (sectors > 0) { | |
362 | ide_driver_t *drv; | |
363 | ||
364 | drv = *(ide_driver_t **)rq->rq_disk->private_data; | |
365 | drv->end_request(drive, 1, sectors); | |
366 | } | |
367 | } | |
368 | return ide_error(drive, s, stat); | |
369 | } | |
370 | ||
371 | static void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat) | |
372 | { | |
55c16a70 JA |
373 | HWIF(drive)->cursg = NULL; |
374 | ||
4aff5e23 | 375 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
1da177e4 LT |
376 | ide_task_t *task = rq->special; |
377 | ||
378 | if (task->tf_out_flags.all) { | |
379 | u8 err = drive->hwif->INB(IDE_ERROR_REG); | |
380 | ide_end_drive_cmd(drive, stat, err); | |
381 | return; | |
382 | } | |
383 | } | |
384 | ||
03731fbd RP |
385 | if (rq->rq_disk) { |
386 | ide_driver_t *drv; | |
387 | ||
388 | drv = *(ide_driver_t **)rq->rq_disk->private_data;; | |
389 | drv->end_request(drive, 1, rq->hard_nr_sectors); | |
390 | } else | |
391 | ide_end_request(drive, 1, rq->hard_nr_sectors); | |
1da177e4 LT |
392 | } |
393 | ||
394 | /* | |
395 | * Handler for command with PIO data-in phase (Read/Read Multiple). | |
396 | */ | |
397 | ide_startstop_t task_in_intr (ide_drive_t *drive) | |
398 | { | |
399 | ide_hwif_t *hwif = drive->hwif; | |
400 | struct request *rq = HWGROUP(drive)->rq; | |
401 | u8 stat = hwif->INB(IDE_STATUS_REG); | |
402 | ||
403 | /* new way for dealing with premature shared PCI interrupts */ | |
404 | if (!OK_STAT(stat, DATA_READY, BAD_R_STAT)) { | |
405 | if (stat & (ERR_STAT | DRQ_STAT)) | |
406 | return task_error(drive, rq, __FUNCTION__, stat); | |
407 | /* No data yet, so wait for another IRQ. */ | |
408 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
409 | return ide_started; | |
410 | } | |
411 | ||
412 | ide_pio_datablock(drive, rq, 0); | |
413 | ||
414 | /* If it was the last datablock check status and finish transfer. */ | |
415 | if (!hwif->nleft) { | |
416 | stat = wait_drive_not_busy(drive); | |
417 | if (!OK_STAT(stat, 0, BAD_R_STAT)) | |
418 | return task_error(drive, rq, __FUNCTION__, stat); | |
419 | task_end_request(drive, rq, stat); | |
420 | return ide_stopped; | |
421 | } | |
422 | ||
423 | /* Still data left to transfer. */ | |
424 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); | |
425 | ||
426 | return ide_started; | |
427 | } | |
428 | EXPORT_SYMBOL(task_in_intr); | |
429 | ||
430 | /* | |
431 | * Handler for command with PIO data-out phase (Write/Write Multiple). | |
432 | */ | |
433 | static ide_startstop_t task_out_intr (ide_drive_t *drive) | |
434 | { | |
435 | ide_hwif_t *hwif = drive->hwif; | |
436 | struct request *rq = HWGROUP(drive)->rq; | |
437 | u8 stat = hwif->INB(IDE_STATUS_REG); | |
438 | ||
439 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) | |
440 | return task_error(drive, rq, __FUNCTION__, stat); | |
441 | ||
442 | /* Deal with unexpected ATA data phase. */ | |
443 | if (((stat & DRQ_STAT) == 0) ^ !hwif->nleft) | |
444 | return task_error(drive, rq, __FUNCTION__, stat); | |
445 | ||
446 | if (!hwif->nleft) { | |
447 | task_end_request(drive, rq, stat); | |
448 | return ide_stopped; | |
449 | } | |
450 | ||
451 | /* Still data left to transfer. */ | |
452 | ide_pio_datablock(drive, rq, 1); | |
453 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
454 | ||
455 | return ide_started; | |
456 | } | |
457 | ||
458 | ide_startstop_t pre_task_out_intr (ide_drive_t *drive, struct request *rq) | |
459 | { | |
460 | ide_startstop_t startstop; | |
461 | ||
462 | if (ide_wait_stat(&startstop, drive, DATA_READY, | |
463 | drive->bad_wstat, WAIT_DRQ)) { | |
464 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", | |
465 | drive->name, | |
466 | drive->hwif->data_phase ? "MULT" : "", | |
467 | drive->addressing ? "_EXT" : ""); | |
468 | return startstop; | |
469 | } | |
470 | ||
471 | if (!drive->unmask) | |
472 | local_irq_disable(); | |
473 | ||
474 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); | |
475 | ide_pio_datablock(drive, rq, 1); | |
476 | ||
477 | return ide_started; | |
478 | } | |
479 | EXPORT_SYMBOL(pre_task_out_intr); | |
480 | ||
481 | static int ide_diag_taskfile(ide_drive_t *drive, ide_task_t *args, unsigned long data_size, u8 *buf) | |
482 | { | |
483 | struct request rq; | |
484 | ||
485 | memset(&rq, 0, sizeof(rq)); | |
02ac2460 | 486 | rq.ref_count = 1; |
4aff5e23 | 487 | rq.cmd_type = REQ_TYPE_ATA_TASKFILE; |
1da177e4 LT |
488 | rq.buffer = buf; |
489 | ||
490 | /* | |
491 | * (ks) We transfer currently only whole sectors. | |
492 | * This is suffient for now. But, it would be great, | |
493 | * if we would find a solution to transfer any size. | |
494 | * To support special commands like READ LONG. | |
495 | */ | |
496 | if (args->command_type != IDE_DRIVE_TASK_NO_DATA) { | |
497 | if (data_size == 0) | |
650d841d | 498 | rq.nr_sectors = (args->tf.hob_nsect << 8) | args->tf.nsect; |
1da177e4 LT |
499 | else |
500 | rq.nr_sectors = data_size / SECTOR_SIZE; | |
501 | ||
502 | if (!rq.nr_sectors) { | |
503 | printk(KERN_ERR "%s: in/out command without data\n", | |
504 | drive->name); | |
505 | return -EFAULT; | |
506 | } | |
507 | ||
508 | rq.hard_nr_sectors = rq.nr_sectors; | |
509 | rq.hard_cur_sectors = rq.current_nr_sectors = rq.nr_sectors; | |
510 | ||
511 | if (args->command_type == IDE_DRIVE_TASK_RAW_WRITE) | |
4aff5e23 | 512 | rq.cmd_flags |= REQ_RW; |
1da177e4 LT |
513 | } |
514 | ||
515 | rq.special = args; | |
ef0f6a43 | 516 | args->rq = &rq; |
1da177e4 LT |
517 | return ide_do_drive_cmd(drive, &rq, ide_wait); |
518 | } | |
519 | ||
520 | int ide_raw_taskfile (ide_drive_t *drive, ide_task_t *args, u8 *buf) | |
521 | { | |
522 | return ide_diag_taskfile(drive, args, 0, buf); | |
523 | } | |
524 | ||
525 | EXPORT_SYMBOL(ide_raw_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; | |
1da177e4 LT |
534 | int err = 0; |
535 | int tasksize = sizeof(struct ide_task_request_s); | |
3a42bb22 AC |
536 | unsigned int taskin = 0; |
537 | unsigned int taskout = 0; | |
1da177e4 LT |
538 | u8 io_32bit = drive->io_32bit; |
539 | char __user *buf = (char __user *)arg; | |
540 | ||
541 | // printk("IDE Taskfile ...\n"); | |
542 | ||
f5e3c2fa | 543 | req_task = kzalloc(tasksize, GFP_KERNEL); |
1da177e4 | 544 | if (req_task == NULL) return -ENOMEM; |
1da177e4 LT |
545 | if (copy_from_user(req_task, buf, tasksize)) { |
546 | kfree(req_task); | |
547 | return -EFAULT; | |
548 | } | |
549 | ||
3a42bb22 AC |
550 | taskout = req_task->out_size; |
551 | taskin = req_task->in_size; | |
552 | ||
553 | if (taskin > 65536 || taskout > 65536) { | |
554 | err = -EINVAL; | |
555 | goto abort; | |
556 | } | |
1da177e4 LT |
557 | |
558 | if (taskout) { | |
559 | int outtotal = tasksize; | |
f5e3c2fa | 560 | outbuf = kzalloc(taskout, GFP_KERNEL); |
1da177e4 LT |
561 | if (outbuf == NULL) { |
562 | err = -ENOMEM; | |
563 | goto abort; | |
564 | } | |
1da177e4 LT |
565 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
566 | err = -EFAULT; | |
567 | goto abort; | |
568 | } | |
569 | } | |
570 | ||
571 | if (taskin) { | |
572 | int intotal = tasksize + taskout; | |
f5e3c2fa | 573 | inbuf = kzalloc(taskin, GFP_KERNEL); |
1da177e4 LT |
574 | if (inbuf == NULL) { |
575 | err = -ENOMEM; | |
576 | goto abort; | |
577 | } | |
1da177e4 LT |
578 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
579 | err = -EFAULT; | |
580 | goto abort; | |
581 | } | |
582 | } | |
583 | ||
584 | memset(&args, 0, sizeof(ide_task_t)); | |
1da177e4 | 585 | |
650d841d BZ |
586 | memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); |
587 | memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE); | |
1da177e4 LT |
588 | args.tf_in_flags = req_task->in_flags; |
589 | args.tf_out_flags = req_task->out_flags; | |
590 | args.data_phase = req_task->data_phase; | |
591 | args.command_type = req_task->req_cmd; | |
592 | ||
593 | drive->io_32bit = 0; | |
594 | switch(req_task->data_phase) { | |
595 | case TASKFILE_OUT_DMAQ: | |
596 | case TASKFILE_OUT_DMA: | |
597 | err = ide_diag_taskfile(drive, &args, taskout, outbuf); | |
598 | break; | |
599 | case TASKFILE_IN_DMAQ: | |
600 | case TASKFILE_IN_DMA: | |
601 | err = ide_diag_taskfile(drive, &args, taskin, inbuf); | |
602 | break; | |
603 | case TASKFILE_MULTI_OUT: | |
604 | if (!drive->mult_count) { | |
605 | /* (hs): give up if multcount is not set */ | |
606 | printk(KERN_ERR "%s: %s Multimode Write " \ | |
607 | "multcount is not set\n", | |
608 | drive->name, __FUNCTION__); | |
609 | err = -EPERM; | |
610 | goto abort; | |
611 | } | |
612 | /* fall through */ | |
613 | case TASKFILE_OUT: | |
614 | args.prehandler = &pre_task_out_intr; | |
615 | args.handler = &task_out_intr; | |
616 | err = ide_diag_taskfile(drive, &args, taskout, outbuf); | |
617 | break; | |
618 | case TASKFILE_MULTI_IN: | |
619 | if (!drive->mult_count) { | |
620 | /* (hs): give up if multcount is not set */ | |
621 | printk(KERN_ERR "%s: %s Multimode Read failure " \ | |
622 | "multcount is not set\n", | |
623 | drive->name, __FUNCTION__); | |
624 | err = -EPERM; | |
625 | goto abort; | |
626 | } | |
627 | /* fall through */ | |
628 | case TASKFILE_IN: | |
629 | args.handler = &task_in_intr; | |
630 | err = ide_diag_taskfile(drive, &args, taskin, inbuf); | |
631 | break; | |
632 | case TASKFILE_NO_DATA: | |
633 | args.handler = &task_no_data_intr; | |
634 | err = ide_diag_taskfile(drive, &args, 0, NULL); | |
635 | break; | |
636 | default: | |
637 | err = -EFAULT; | |
638 | goto abort; | |
639 | } | |
640 | ||
650d841d BZ |
641 | memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2); |
642 | memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE); | |
1da177e4 LT |
643 | req_task->in_flags = args.tf_in_flags; |
644 | req_task->out_flags = args.tf_out_flags; | |
645 | ||
646 | if (copy_to_user(buf, req_task, tasksize)) { | |
647 | err = -EFAULT; | |
648 | goto abort; | |
649 | } | |
650 | if (taskout) { | |
651 | int outtotal = tasksize; | |
652 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { | |
653 | err = -EFAULT; | |
654 | goto abort; | |
655 | } | |
656 | } | |
657 | if (taskin) { | |
658 | int intotal = tasksize + taskout; | |
659 | if (copy_to_user(buf + intotal, inbuf, taskin)) { | |
660 | err = -EFAULT; | |
661 | goto abort; | |
662 | } | |
663 | } | |
664 | abort: | |
665 | kfree(req_task); | |
6044ec88 JJ |
666 | kfree(outbuf); |
667 | kfree(inbuf); | |
1da177e4 LT |
668 | |
669 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); | |
670 | ||
671 | drive->io_32bit = io_32bit; | |
672 | ||
673 | return err; | |
674 | } | |
26a5b040 | 675 | #endif |
1da177e4 LT |
676 | |
677 | int ide_wait_cmd (ide_drive_t *drive, u8 cmd, u8 nsect, u8 feature, u8 sectors, u8 *buf) | |
678 | { | |
679 | struct request rq; | |
680 | u8 buffer[4]; | |
681 | ||
682 | if (!buf) | |
683 | buf = buffer; | |
684 | memset(buf, 0, 4 + SECTOR_WORDS * 4 * sectors); | |
685 | ide_init_drive_cmd(&rq); | |
686 | rq.buffer = buf; | |
687 | *buf++ = cmd; | |
688 | *buf++ = nsect; | |
689 | *buf++ = feature; | |
690 | *buf++ = sectors; | |
691 | return ide_do_drive_cmd(drive, &rq, ide_wait); | |
692 | } | |
693 | ||
1da177e4 LT |
694 | int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
695 | { | |
696 | int err = 0; | |
697 | u8 args[4], *argbuf = args; | |
698 | u8 xfer_rate = 0; | |
699 | int argsize = 4; | |
700 | ide_task_t tfargs; | |
650d841d | 701 | struct ide_taskfile *tf = &tfargs.tf; |
1da177e4 LT |
702 | |
703 | if (NULL == (void *) arg) { | |
704 | struct request rq; | |
705 | ide_init_drive_cmd(&rq); | |
706 | return ide_do_drive_cmd(drive, &rq, ide_wait); | |
707 | } | |
708 | ||
709 | if (copy_from_user(args, (void __user *)arg, 4)) | |
710 | return -EFAULT; | |
711 | ||
712 | memset(&tfargs, 0, sizeof(ide_task_t)); | |
650d841d BZ |
713 | tf->feature = args[2]; |
714 | tf->nsect = args[3]; | |
715 | tf->lbal = args[1]; | |
716 | tf->command = args[0]; | |
1da177e4 LT |
717 | |
718 | if (args[3]) { | |
719 | argsize = 4 + (SECTOR_WORDS * 4 * args[3]); | |
f5e3c2fa | 720 | argbuf = kzalloc(argsize, GFP_KERNEL); |
1da177e4 LT |
721 | if (argbuf == NULL) |
722 | return -ENOMEM; | |
1da177e4 LT |
723 | } |
724 | if (set_transfer(drive, &tfargs)) { | |
725 | xfer_rate = args[1]; | |
726 | if (ide_ata66_check(drive, &tfargs)) | |
727 | goto abort; | |
728 | } | |
729 | ||
730 | err = ide_wait_cmd(drive, args[0], args[1], args[2], args[3], argbuf); | |
731 | ||
732 | if (!err && xfer_rate) { | |
733 | /* active-retuning-calls future */ | |
734 | ide_set_xfer_rate(drive, xfer_rate); | |
735 | ide_driveid_update(drive); | |
736 | } | |
737 | abort: | |
738 | if (copy_to_user((void __user *)arg, argbuf, argsize)) | |
739 | err = -EFAULT; | |
740 | if (argsize > 4) | |
741 | kfree(argbuf); | |
742 | return err; | |
743 | } | |
744 | ||
745 | static int ide_wait_cmd_task(ide_drive_t *drive, u8 *buf) | |
746 | { | |
747 | struct request rq; | |
748 | ||
749 | ide_init_drive_cmd(&rq); | |
4aff5e23 | 750 | rq.cmd_type = REQ_TYPE_ATA_TASK; |
1da177e4 LT |
751 | rq.buffer = buf; |
752 | return ide_do_drive_cmd(drive, &rq, ide_wait); | |
753 | } | |
754 | ||
1da177e4 LT |
755 | int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
756 | { | |
757 | void __user *p = (void __user *)arg; | |
758 | int err = 0; | |
759 | u8 args[7], *argbuf = args; | |
760 | int argsize = 7; | |
761 | ||
762 | if (copy_from_user(args, p, 7)) | |
763 | return -EFAULT; | |
764 | err = ide_wait_cmd_task(drive, argbuf); | |
765 | if (copy_to_user(p, argbuf, argsize)) | |
766 | err = -EFAULT; | |
767 | return err; | |
768 | } | |
769 | ||
770 | /* | |
771 | * NOTICE: This is additions from IBM to provide a discrete interface, | |
772 | * for selective taskregister access operations. Nice JOB Klaus!!! | |
773 | * Glad to be able to work and co-develop this with you and IBM. | |
774 | */ | |
775 | ide_startstop_t flagged_taskfile (ide_drive_t *drive, ide_task_t *task) | |
776 | { | |
777 | ide_hwif_t *hwif = HWIF(drive); | |
650d841d | 778 | struct ide_taskfile *tf = &task->tf; |
1da177e4 LT |
779 | |
780 | if (task->data_phase == TASKFILE_MULTI_IN || | |
781 | task->data_phase == TASKFILE_MULTI_OUT) { | |
782 | if (!drive->mult_count) { | |
783 | printk(KERN_ERR "%s: multimode not set!\n", drive->name); | |
784 | return ide_stopped; | |
785 | } | |
786 | } | |
787 | ||
788 | /* | |
e07bc709 | 789 | * (ks) Check taskfile in flags. |
1da177e4 LT |
790 | * If set, then execute as it is defined. |
791 | * If not set, then define default settings. | |
792 | * The default values are: | |
e07bc709 BZ |
793 | * read all taskfile registers (except data) |
794 | * read the hob registers (sector, nsector, lcyl, hcyl) | |
1da177e4 | 795 | */ |
1da177e4 LT |
796 | if (task->tf_in_flags.all == 0) { |
797 | task->tf_in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; | |
798 | if (drive->addressing == 1) | |
799 | task->tf_in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); | |
800 | } | |
801 | ||
802 | /* ALL Command Block Executions SHALL clear nIEN, unless otherwise */ | |
803 | if (IDE_CONTROL_REG) | |
804 | /* clear nIEN */ | |
805 | hwif->OUTB(drive->ctl, IDE_CONTROL_REG); | |
806 | SELECT_MASK(drive, 0); | |
807 | ||
650d841d BZ |
808 | if (task->tf_out_flags.b.data) |
809 | hwif->OUTW((tf->hob_data << 8) | tf->data, IDE_DATA_REG); | |
1da177e4 LT |
810 | |
811 | /* (ks) send hob registers first */ | |
812 | if (task->tf_out_flags.b.nsector_hob) | |
650d841d | 813 | hwif->OUTB(tf->hob_nsect, IDE_NSECTOR_REG); |
1da177e4 | 814 | if (task->tf_out_flags.b.sector_hob) |
650d841d | 815 | hwif->OUTB(tf->hob_lbal, IDE_SECTOR_REG); |
1da177e4 | 816 | if (task->tf_out_flags.b.lcyl_hob) |
650d841d | 817 | hwif->OUTB(tf->hob_lbam, IDE_LCYL_REG); |
1da177e4 | 818 | if (task->tf_out_flags.b.hcyl_hob) |
650d841d | 819 | hwif->OUTB(tf->hob_lbah, IDE_HCYL_REG); |
1da177e4 LT |
820 | |
821 | /* (ks) Send now the standard registers */ | |
822 | if (task->tf_out_flags.b.error_feature) | |
650d841d | 823 | hwif->OUTB(tf->feature, IDE_FEATURE_REG); |
1da177e4 LT |
824 | /* refers to number of sectors to transfer */ |
825 | if (task->tf_out_flags.b.nsector) | |
650d841d | 826 | hwif->OUTB(tf->nsect, IDE_NSECTOR_REG); |
1da177e4 LT |
827 | /* refers to sector offset or start sector */ |
828 | if (task->tf_out_flags.b.sector) | |
650d841d | 829 | hwif->OUTB(tf->lbal, IDE_SECTOR_REG); |
1da177e4 | 830 | if (task->tf_out_flags.b.lcyl) |
650d841d | 831 | hwif->OUTB(tf->lbam, IDE_LCYL_REG); |
1da177e4 | 832 | if (task->tf_out_flags.b.hcyl) |
650d841d | 833 | hwif->OUTB(tf->lbah, IDE_HCYL_REG); |
1da177e4 LT |
834 | |
835 | /* | |
836 | * (ks) In the flagged taskfile approch, we will use all specified | |
837 | * registers and the register value will not be changed, except the | |
838 | * select bit (master/slave) in the drive_head register. We must make | |
839 | * sure that the desired drive is selected. | |
840 | */ | |
650d841d | 841 | hwif->OUTB(tf->device | drive->select.all, IDE_SELECT_REG); |
1da177e4 LT |
842 | switch(task->data_phase) { |
843 | ||
844 | case TASKFILE_OUT_DMAQ: | |
845 | case TASKFILE_OUT_DMA: | |
846 | case TASKFILE_IN_DMAQ: | |
847 | case TASKFILE_IN_DMA: | |
eda5b359 BZ |
848 | if (!drive->using_dma) |
849 | break; | |
850 | ||
dd35b7bb | 851 | if (!hwif->dma_setup(drive)) { |
650d841d | 852 | hwif->dma_exec_cmd(drive, tf->command); |
dd35b7bb BZ |
853 | hwif->dma_start(drive); |
854 | return ide_started; | |
855 | } | |
1da177e4 LT |
856 | break; |
857 | ||
858 | default: | |
859 | if (task->handler == NULL) | |
860 | return ide_stopped; | |
861 | ||
862 | /* Issue the command */ | |
863 | if (task->prehandler) { | |
650d841d | 864 | hwif->OUTBSYNC(drive, tf->command, IDE_COMMAND_REG); |
1da177e4 LT |
865 | ndelay(400); /* FIXME */ |
866 | return task->prehandler(drive, task->rq); | |
867 | } | |
650d841d | 868 | ide_execute_command(drive, tf->command, task->handler, WAIT_WORSTCASE, NULL); |
dd35b7bb | 869 | return ide_started; |
1da177e4 LT |
870 | } |
871 | ||
dd35b7bb | 872 | return ide_stopped; |
1da177e4 | 873 | } |