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ide: add ide_execute_pkt_cmd() helper
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / ide / ide-taskfile.c
CommitLineData
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
9e42237f
BZ		 36void ide_tf_load(ide_drive_t *drive, ide_task_t *task)
37{
38 ide_hwif_t *hwif = drive->hwif;
4c3032d8 39 struct ide_io_ports *io_ports = &hwif->io_ports;
9e42237f
BZ		 40 struct ide_taskfile *tf = &task->tf;
41 u8 HIHI = (task->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;
42
74095a91
BZ		 43 if (task->tf_flags & IDE_TFLAG_FLAGGED)
44 HIHI = 0xFF;
45
807e35d6
BZ		 46#ifdef DEBUG
47 printk("%s: tf: feat 0x%02x nsect 0x%02x lbal 0x%02x "
48 "lbam 0x%02x lbah 0x%02x dev 0x%02x cmd 0x%02x\n",
49 drive->name, tf->feature, tf->nsect, tf->lbal,
50 tf->lbam, tf->lbah, tf->device, tf->command);
6dd9b837
BZ		 51 printk("%s: hob: nsect 0x%02x lbal 0x%02x "
52 "lbam 0x%02x lbah 0x%02x\n",
53 drive->name, tf->hob_nsect, tf->hob_lbal,
54 tf->hob_lbam, tf->hob_lbah);
807e35d6
BZ		 55#endif
56
81ca6919 57 ide_set_irq(drive, 1);
9e42237f
BZ		 58
59 if ((task->tf_flags & IDE_TFLAG_NO_SELECT_MASK) == 0)
60 SELECT_MASK(drive, 0);
61
74095a91 62 if (task->tf_flags & IDE_TFLAG_OUT_DATA)
4c3032d8 63 hwif->OUTW((tf->hob_data << 8) | tf->data, io_ports->data_addr);
74095a91
BZ		 64
65 if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
4c3032d8 66 hwif->OUTB(tf->hob_feature, io_ports->feature_addr);
74095a91 67 if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
4c3032d8 68 hwif->OUTB(tf->hob_nsect, io_ports->nsect_addr);
74095a91 69 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
4c3032d8 70 hwif->OUTB(tf->hob_lbal, io_ports->lbal_addr);
74095a91 71 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
4c3032d8 72 hwif->OUTB(tf->hob_lbam, io_ports->lbam_addr);
74095a91 73 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
4c3032d8 74 hwif->OUTB(tf->hob_lbah, io_ports->lbah_addr);
9e42237f 75
74095a91 76 if (task->tf_flags & IDE_TFLAG_OUT_FEATURE)
4c3032d8 77 hwif->OUTB(tf->feature, io_ports->feature_addr);
74095a91 78 if (task->tf_flags & IDE_TFLAG_OUT_NSECT)
4c3032d8 79 hwif->OUTB(tf->nsect, io_ports->nsect_addr);
74095a91 80 if (task->tf_flags & IDE_TFLAG_OUT_LBAL)
4c3032d8 81 hwif->OUTB(tf->lbal, io_ports->lbal_addr);
74095a91 82 if (task->tf_flags & IDE_TFLAG_OUT_LBAM)
4c3032d8 83 hwif->OUTB(tf->lbam, io_ports->lbam_addr);
74095a91 84 if (task->tf_flags & IDE_TFLAG_OUT_LBAH)
4c3032d8 85 hwif->OUTB(tf->lbah, io_ports->lbah_addr);
9e42237f 86
807e35d6 87 if (task->tf_flags & IDE_TFLAG_OUT_DEVICE)
23579a2a 88 hwif->OUTB((tf->device & HIHI) | drive->select.all,
4c3032d8 89 io_ports->device_addr);
9e42237f
BZ		 90}
91
1da177e4
LT		 92int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf)
93{
94 ide_task_t args;
650d841d 95
1da177e4 96 memset(&args, 0, sizeof(ide_task_t));
650d841d 97 args.tf.nsect = 0x01;
1da177e4 98 if (drive->media == ide_disk)
650d841d 99 args.tf.command = WIN_IDENTIFY;
1da177e4 100 else
650d841d 101 args.tf.command = WIN_PIDENTIFY;
657cc1a8 102 args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
ac026ff2 103 args.data_phase = TASKFILE_IN;
ac026ff2 104 return ide_raw_taskfile(drive, &args, buf, 1);
1da177e4
LT		 105}
106
74095a91
BZ		 107static int inline task_dma_ok(ide_task_t *task)
108{
f6e29e35 109 if (blk_fs_request(task->rq) || (task->tf_flags & IDE_TFLAG_FLAGGED))
74095a91
BZ		 110 return 1;
111
112 switch (task->tf.command) {
113 case WIN_WRITEDMA_ONCE:
114 case WIN_WRITEDMA:
115 case WIN_WRITEDMA_EXT:
116 case WIN_READDMA_ONCE:
117 case WIN_READDMA:
118 case WIN_READDMA_EXT:
119 case WIN_IDENTIFY_DMA:
120 return 1;
121 }
122
123 return 0;
124}
125
1192e528 126static ide_startstop_t task_no_data_intr(ide_drive_t *);
57d7366b
BZ		 127static ide_startstop_t set_geometry_intr(ide_drive_t *);
128static ide_startstop_t recal_intr(ide_drive_t *);
129static ide_startstop_t set_multmode_intr(ide_drive_t *);
f6e29e35
BZ		 130static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *);
131static ide_startstop_t task_in_intr(ide_drive_t *);
1192e528 132
1da177e4
LT		 133ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task)
134{
135 ide_hwif_t *hwif = HWIF(drive);
650d841d 136 struct ide_taskfile *tf = &task->tf;
57d7366b 137 ide_handler_t *handler = NULL;
f37afdac 138 const struct ide_dma_ops *dma_ops = hwif->dma_ops;
1da177e4 139
1edee60e
BZ		 140 if (task->data_phase == TASKFILE_MULTI_IN ||
141 task->data_phase == TASKFILE_MULTI_OUT) {
142 if (!drive->mult_count) {
143 printk(KERN_ERR "%s: multimode not set!\n",
144 drive->name);
145 return ide_stopped;
146 }
147 }
148
149 if (task->tf_flags & IDE_TFLAG_FLAGGED)
150 task->tf_flags |= IDE_TFLAG_FLAGGED_SET_IN_FLAGS;
151
f6e29e35
BZ		 152 if ((task->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0)
153 ide_tf_load(drive, task);
1da177e4 154
10d90157
BZ		 155 switch (task->data_phase) {
156 case TASKFILE_MULTI_OUT:
157 case TASKFILE_OUT:
4c3032d8 158 hwif->OUTBSYNC(drive, tf->command, hwif->io_ports.command_addr);
10d90157
BZ		 159 ndelay(400); /* FIXME */
160 return pre_task_out_intr(drive, task->rq);
161 case TASKFILE_MULTI_IN:
162 case TASKFILE_IN:
57d7366b 163 handler = task_in_intr;
1192e528 164 /* fall-through */
10d90157 165 case TASKFILE_NO_DATA:
57d7366b
BZ		 166 if (handler == NULL)
167 handler = task_no_data_intr;
1192e528 168 /* WIN_{SPECIFY,RESTORE,SETMULT} use custom handlers */
57d7366b
BZ		 169 if (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) {
170 switch (tf->command) {
171 case WIN_SPECIFY: handler = set_geometry_intr; break;
172 case WIN_RESTORE: handler = recal_intr; break;
173 case WIN_SETMULT: handler = set_multmode_intr; break;
174 }
175 }
176 ide_execute_command(drive, tf->command, handler,
177 WAIT_WORSTCASE, NULL);
1da177e4 178 return ide_started;
10d90157
BZ		 179 default:
180 if (task_dma_ok(task) == 0 || drive->using_dma == 0 ||
5e37bdc0 181 dma_ops->dma_setup(drive))
10d90157 182 return ide_stopped;
5e37bdc0
BZ		 183 dma_ops->dma_exec_cmd(drive, tf->command);
184 dma_ops->dma_start(drive);
74095a91 185 return ide_started;
1da177e4 186 }
1da177e4 187}
f6e29e35 188EXPORT_SYMBOL_GPL(do_rw_taskfile);
1da177e4 189
1da177e4
LT		 190/*
191 * set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd.
192 */
57d7366b 193static ide_startstop_t set_multmode_intr(ide_drive_t *drive)
1da177e4 194{
c47137a9 195 u8 stat = ide_read_status(drive);
1da177e4 196
c47137a9 197 if (OK_STAT(stat, READY_STAT, BAD_STAT))
1da177e4 198 drive->mult_count = drive->mult_req;
c47137a9 199 else {
1da177e4
LT		 200 drive->mult_req = drive->mult_count = 0;
201 drive->special.b.recalibrate = 1;
202 (void) ide_dump_status(drive, "set_multmode", stat);
203 }
204 return ide_stopped;
205}
206
207/*
208 * set_geometry_intr() is invoked on completion of a WIN_SPECIFY cmd.
209 */
57d7366b 210static ide_startstop_t set_geometry_intr(ide_drive_t *drive)
1da177e4 211{
1da177e4
LT		 212 int retries = 5;
213 u8 stat;
214
c47137a9 215 while (((stat = ide_read_status(drive)) & BUSY_STAT) && retries--)
1da177e4
LT		 216 udelay(10);
217
218 if (OK_STAT(stat, READY_STAT, BAD_STAT))
219 return ide_stopped;
220
221 if (stat & (ERR_STAT|DRQ_STAT))
222 return ide_error(drive, "set_geometry_intr", stat);
223
125e1874 224 BUG_ON(HWGROUP(drive)->handler != NULL);
1da177e4
LT		 225 ide_set_handler(drive, &set_geometry_intr, WAIT_WORSTCASE, NULL);
226 return ide_started;
227}
228
229/*
230 * recal_intr() is invoked on completion of a WIN_RESTORE (recalibrate) cmd.
231 */
57d7366b 232static ide_startstop_t recal_intr(ide_drive_t *drive)
1da177e4 233{
c47137a9 234 u8 stat = ide_read_status(drive);
1da177e4 235
c47137a9 236 if (!OK_STAT(stat, READY_STAT, BAD_STAT))
1da177e4
LT		 237 return ide_error(drive, "recal_intr", stat);
238 return ide_stopped;
239}
240
241/*
242 * Handler for commands without a data phase
243 */
1192e528 244static ide_startstop_t task_no_data_intr(ide_drive_t *drive)
1da177e4
LT		 245{
246 ide_task_t *args = HWGROUP(drive)->rq->special;
1da177e4
LT		 247 u8 stat;
248
366c7f55 249 local_irq_enable_in_hardirq();
c47137a9
BZ		 250 stat = ide_read_status(drive);
251
252 if (!OK_STAT(stat, READY_STAT, BAD_STAT))
1da177e4
LT		 253 return ide_error(drive, "task_no_data_intr", stat);
254 /* calls ide_end_drive_cmd */
c47137a9 255
1da177e4 256 if (args)
64a57fe4 257 ide_end_drive_cmd(drive, stat, ide_read_error(drive));
1da177e4
LT		 258
259 return ide_stopped;
260}
261
da6f4c7f 262static u8 wait_drive_not_busy(ide_drive_t *drive)
1da177e4 263{
b42fa133 264 int retries;
1da177e4
LT		 265 u8 stat;
266
267 /*
268 * Last sector was transfered, wait until drive is ready.
2624565c 269 * This can take up to 10 usec, but we will wait max 1 ms.
1da177e4 270 */
b42fa133 271 for (retries = 0; retries < 100; retries++) {
c47137a9
BZ		 272 stat = ide_read_status(drive);
273
274 if (stat & BUSY_STAT)
b42fa133
MY		 275 udelay(10);
276 else
277 break;
278 }
1da177e4 279
b42fa133 280 if (stat & BUSY_STAT)
1da177e4
LT		 281 printk(KERN_ERR "%s: drive still BUSY!\n", drive->name);
282
283 return stat;
284}
285
92d3ab27
BZ		 286static void ide_pio_sector(ide_drive_t *drive, struct request *rq,
287 unsigned int write)
1da177e4
LT		 288{
289 ide_hwif_t *hwif = drive->hwif;
290 struct scatterlist *sg = hwif->sg_table;
55c16a70 291 struct scatterlist *cursg = hwif->cursg;
1da177e4
LT		 292 struct page *page;
293#ifdef CONFIG_HIGHMEM
294 unsigned long flags;
295#endif
296 unsigned int offset;
297 u8 *buf;
298
55c16a70
JA		 299 cursg = hwif->cursg;
300 if (!cursg) {
301 cursg = sg;
302 hwif->cursg = sg;
303 }
304
45711f1a 305 page = sg_page(cursg);
55c16a70 306 offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE;
1da177e4
LT		 307
308 /* get the current page and offset */
309 page = nth_page(page, (offset >> PAGE_SHIFT));
310 offset %= PAGE_SIZE;
311
312#ifdef CONFIG_HIGHMEM
313 local_irq_save(flags);
314#endif
315 buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset;
316
317 hwif->nleft--;
318 hwif->cursg_ofs++;
319
55c16a70
JA		 320 if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) {
321 hwif->cursg = sg_next(hwif->cursg);
1da177e4
LT		 322 hwif->cursg_ofs = 0;
323 }
324
325 /* do the actual data transfer */
326 if (write)
9567b349 327 hwif->output_data(drive, rq, buf, SECTOR_SIZE);
1da177e4 328 else
9567b349 329 hwif->input_data(drive, rq, buf, SECTOR_SIZE);
1da177e4
LT		 330
331 kunmap_atomic(buf, KM_BIO_SRC_IRQ);
332#ifdef CONFIG_HIGHMEM
333 local_irq_restore(flags);
334#endif
335}
336
92d3ab27
BZ		 337static void ide_pio_multi(ide_drive_t *drive, struct request *rq,
338 unsigned int write)
1da177e4
LT		 339{
340 unsigned int nsect;
341
342 nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count);
343 while (nsect--)
92d3ab27 344 ide_pio_sector(drive, rq, write);
1da177e4
LT		 345}
346
858119e1 347static void ide_pio_datablock(ide_drive_t *drive, struct request *rq,
1da177e4
LT		 348 unsigned int write)
349{
35cf2b94
TH		 350 u8 saved_io_32bit = drive->io_32bit;
351
1da177e4
LT		 352 if (rq->bio) /* fs request */
353 rq->errors = 0;
354
35cf2b94
TH		 355 if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
356 ide_task_t *task = rq->special;
357
358 if (task->tf_flags & IDE_TFLAG_IO_16BIT)
359 drive->io_32bit = 0;
360 }
361
651c29a1
AM		 362 touch_softlockup_watchdog();
363
1da177e4
LT		 364 switch (drive->hwif->data_phase) {
365 case TASKFILE_MULTI_IN:
366 case TASKFILE_MULTI_OUT:
92d3ab27 367 ide_pio_multi(drive, rq, write);
1da177e4
LT		 368 break;
369 default:
92d3ab27 370 ide_pio_sector(drive, rq, write);
1da177e4
LT		 371 break;
372 }
35cf2b94
TH		 373
374 drive->io_32bit = saved_io_32bit;
1da177e4
LT		 375}
376
377static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq,
378 const char *s, u8 stat)
379{
380 if (rq->bio) {
381 ide_hwif_t *hwif = drive->hwif;
382 int sectors = hwif->nsect - hwif->nleft;
383
384 switch (hwif->data_phase) {
385 case TASKFILE_IN:
386 if (hwif->nleft)
387 break;
388 /* fall through */
389 case TASKFILE_OUT:
390 sectors--;
391 break;
392 case TASKFILE_MULTI_IN:
393 if (hwif->nleft)
394 break;
395 /* fall through */
396 case TASKFILE_MULTI_OUT:
397 sectors -= drive->mult_count;
398 default:
399 break;
400 }
401
402 if (sectors > 0) {
403 ide_driver_t *drv;
404
405 drv = *(ide_driver_t **)rq->rq_disk->private_data;
406 drv->end_request(drive, 1, sectors);
407 }
408 }
409 return ide_error(drive, s, stat);
410}
411
4d7a984b 412void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat)
1da177e4 413{
4aff5e23 414 if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
64a57fe4 415 u8 err = ide_read_error(drive);
1da177e4 416
4d7a984b
TH		 417 ide_end_drive_cmd(drive, stat, err);
418 return;
1da177e4
LT		 419 }
420
03731fbd
RP		 421 if (rq->rq_disk) {
422 ide_driver_t *drv;
423
424 drv = *(ide_driver_t **)rq->rq_disk->private_data;;
79f21b84 425 drv->end_request(drive, 1, rq->nr_sectors);
03731fbd 426 } else
79f21b84 427 ide_end_request(drive, 1, rq->nr_sectors);
1da177e4
LT		 428}
429
6c3c3158
LT		 430/*
431 * We got an interrupt on a task_in case, but no errors and no DRQ.
432 *
433 * It might be a spurious irq (shared irq), but it might be a
434 * command that had no output.
435 */
436static ide_startstop_t task_in_unexpected(ide_drive_t *drive, struct request *rq, u8 stat)
437{
438 /* Command all done? */
439 if (OK_STAT(stat, READY_STAT, BUSY_STAT)) {
440 task_end_request(drive, rq, stat);
441 return ide_stopped;
442 }
443
444 /* Assume it was a spurious irq */
445 ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
446 return ide_started;
447}
448
1da177e4
LT		 449/*
450 * Handler for command with PIO data-in phase (Read/Read Multiple).
451 */
f6e29e35 452static ide_startstop_t task_in_intr(ide_drive_t *drive)
1da177e4
LT		 453{
454 ide_hwif_t *hwif = drive->hwif;
455 struct request *rq = HWGROUP(drive)->rq;
c47137a9 456 u8 stat = ide_read_status(drive);
1da177e4 457
6c3c3158
LT		 458 /* Error? */
459 if (stat & ERR_STAT)
eb63963a 460 return task_error(drive, rq, __func__, stat);
6c3c3158
LT		 461
462 /* Didn't want any data? Odd. */
463 if (!(stat & DRQ_STAT))
464 return task_in_unexpected(drive, rq, stat);
1da177e4
LT		 465
466 ide_pio_datablock(drive, rq, 0);
467
6c3c3158 468 /* Are we done? Check status and finish transfer. */
1da177e4
LT		 469 if (!hwif->nleft) {
470 stat = wait_drive_not_busy(drive);
73d7de0c 471 if (!OK_STAT(stat, 0, BAD_STAT))
eb63963a 472 return task_error(drive, rq, __func__, stat);
1da177e4
LT		 473 task_end_request(drive, rq, stat);
474 return ide_stopped;
475 }
476
477 /* Still data left to transfer. */
478 ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
479
480 return ide_started;
481}
1da177e4
LT		 482
483/*
484 * Handler for command with PIO data-out phase (Write/Write Multiple).
485 */
486static ide_startstop_t task_out_intr (ide_drive_t *drive)
487{
488 ide_hwif_t *hwif = drive->hwif;
489 struct request *rq = HWGROUP(drive)->rq;
c47137a9 490 u8 stat = ide_read_status(drive);
1da177e4
LT		 491
492 if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat))
eb63963a 493 return task_error(drive, rq, __func__, stat);
1da177e4
LT		 494
495 /* Deal with unexpected ATA data phase. */
496 if (((stat & DRQ_STAT) == 0) ^ !hwif->nleft)
eb63963a 497 return task_error(drive, rq, __func__, stat);
1da177e4
LT		 498
499 if (!hwif->nleft) {
500 task_end_request(drive, rq, stat);
501 return ide_stopped;
502 }
503
504 /* Still data left to transfer. */
505 ide_pio_datablock(drive, rq, 1);
506 ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
507
508 return ide_started;
509}
510
f6e29e35 511static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq)
1da177e4
LT		 512{
513 ide_startstop_t startstop;
514
4906f3b4 515 if (ide_wait_stat(&startstop, drive, DRQ_STAT,
1da177e4
LT		 516 drive->bad_wstat, WAIT_DRQ)) {
517 printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n",
518 drive->name,
519 drive->hwif->data_phase ? "MULT" : "",
520 drive->addressing ? "_EXT" : "");
521 return startstop;
522 }
523
524 if (!drive->unmask)
525 local_irq_disable();
526
527 ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
528 ide_pio_datablock(drive, rq, 1);
529
530 return ide_started;
531}
1da177e4 532
ac026ff2 533int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect)
1da177e4
LT		 534{
535 struct request rq;
536
537 memset(&rq, 0, sizeof(rq));
02ac2460 538 rq.ref_count = 1;
4aff5e23 539 rq.cmd_type = REQ_TYPE_ATA_TASKFILE;
1da177e4
LT		 540 rq.buffer = buf;
541
542 /*
543 * (ks) We transfer currently only whole sectors.
544 * This is suffient for now. But, it would be great,
545 * if we would find a solution to transfer any size.
546 * To support special commands like READ LONG.
547 */
ac026ff2
BZ		 548 rq.hard_nr_sectors = rq.nr_sectors = nsect;
549 rq.hard_cur_sectors = rq.current_nr_sectors = nsect;
1da177e4 550
ac026ff2
BZ		 551 if (task->tf_flags & IDE_TFLAG_WRITE)
552 rq.cmd_flags |= REQ_RW;
1da177e4 553
ac026ff2
BZ		 554 rq.special = task;
555 task->rq = &rq;
1da177e4 556
1da177e4
LT		 557 return ide_do_drive_cmd(drive, &rq, ide_wait);
558}
559
1da177e4
LT		 560EXPORT_SYMBOL(ide_raw_taskfile);
561
9a3c49be
BZ		 562int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task)
563{
ac026ff2 564 task->data_phase = TASKFILE_NO_DATA;
9a3c49be 565
ac026ff2 566 return ide_raw_taskfile(drive, task, NULL, 0);
9a3c49be
BZ		 567}
568EXPORT_SYMBOL_GPL(ide_no_data_taskfile);
569
26a5b040 570#ifdef CONFIG_IDE_TASK_IOCTL
1da177e4
LT		 571int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
572{
573 ide_task_request_t *req_task;
574 ide_task_t args;
575 u8 *outbuf = NULL;
576 u8 *inbuf = NULL;
ac026ff2 577 u8 *data_buf = NULL;
1da177e4
LT		 578 int err = 0;
579 int tasksize = sizeof(struct ide_task_request_s);
3a42bb22
AC		 580 unsigned int taskin = 0;
581 unsigned int taskout = 0;
ac026ff2 582 u16 nsect = 0;
1da177e4
LT		 583 char __user *buf = (char __user *)arg;
584
585// printk("IDE Taskfile ...\n");
586
f5e3c2fa 587 req_task = kzalloc(tasksize, GFP_KERNEL);
1da177e4 588 if (req_task == NULL) return -ENOMEM;
1da177e4
LT		 589 if (copy_from_user(req_task, buf, tasksize)) {
590 kfree(req_task);
591 return -EFAULT;
592 }
593
3a42bb22
AC		 594 taskout = req_task->out_size;
595 taskin = req_task->in_size;
596
597 if (taskin > 65536 || taskout > 65536) {
598 err = -EINVAL;
599 goto abort;
600 }
1da177e4
LT		 601
602 if (taskout) {
603 int outtotal = tasksize;
f5e3c2fa 604 outbuf = kzalloc(taskout, GFP_KERNEL);
1da177e4
LT		 605 if (outbuf == NULL) {
606 err = -ENOMEM;
607 goto abort;
608 }
1da177e4
LT		 609 if (copy_from_user(outbuf, buf + outtotal, taskout)) {
610 err = -EFAULT;
611 goto abort;
612 }
613 }
614
615 if (taskin) {
616 int intotal = tasksize + taskout;
f5e3c2fa 617 inbuf = kzalloc(taskin, GFP_KERNEL);
1da177e4
LT		 618 if (inbuf == NULL) {
619 err = -ENOMEM;
620 goto abort;
621 }
1da177e4
LT		 622 if (copy_from_user(inbuf, buf + intotal, taskin)) {
623 err = -EFAULT;
624 goto abort;
625 }
626 }
627
628 memset(&args, 0, sizeof(ide_task_t));
1da177e4 629
650d841d
BZ		 630 memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2);
631 memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE);
866e2ec9
BZ		 632
633 args.data_phase = req_task->data_phase;
1da177e4 634
657cc1a8
BZ		 635 args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE |
636 IDE_TFLAG_IN_TF;
a3bbb9d8 637 if (drive->addressing == 1)
657cc1a8 638 args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB);
a3bbb9d8 639
74095a91
BZ		 640 if (req_task->out_flags.all) {
641 args.tf_flags |= IDE_TFLAG_FLAGGED;
642
643 if (req_task->out_flags.b.data)
644 args.tf_flags |= IDE_TFLAG_OUT_DATA;
645
646 if (req_task->out_flags.b.nsector_hob)
647 args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT;
648 if (req_task->out_flags.b.sector_hob)
649 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL;
650 if (req_task->out_flags.b.lcyl_hob)
651 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM;
652 if (req_task->out_flags.b.hcyl_hob)
653 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH;
654
655 if (req_task->out_flags.b.error_feature)
656 args.tf_flags |= IDE_TFLAG_OUT_FEATURE;
657 if (req_task->out_flags.b.nsector)
658 args.tf_flags |= IDE_TFLAG_OUT_NSECT;
659 if (req_task->out_flags.b.sector)
660 args.tf_flags |= IDE_TFLAG_OUT_LBAL;
661 if (req_task->out_flags.b.lcyl)
662 args.tf_flags |= IDE_TFLAG_OUT_LBAM;
663 if (req_task->out_flags.b.hcyl)
664 args.tf_flags |= IDE_TFLAG_OUT_LBAH;
a3bbb9d8
BZ		 665 } else {
666 args.tf_flags |= IDE_TFLAG_OUT_TF;
667 if (args.tf_flags & IDE_TFLAG_LBA48)
668 args.tf_flags |= IDE_TFLAG_OUT_HOB;
74095a91
BZ		 669 }
670
866e2ec9
BZ		 671 if (req_task->in_flags.b.data)
672 args.tf_flags |= IDE_TFLAG_IN_DATA;
673
1da177e4 674 switch(req_task->data_phase) {
1da177e4
LT		 675 case TASKFILE_MULTI_OUT:
676 if (!drive->mult_count) {
677 /* (hs): give up if multcount is not set */
678 printk(KERN_ERR "%s: %s Multimode Write " \
679 "multcount is not set\n",
eb63963a 680 drive->name, __func__);
1da177e4
LT		 681 err = -EPERM;
682 goto abort;
683 }
684 /* fall through */
685 case TASKFILE_OUT:
ac026ff2
BZ		 686 /* fall through */
687 case TASKFILE_OUT_DMAQ:
688 case TASKFILE_OUT_DMA:
689 nsect = taskout / SECTOR_SIZE;
690 data_buf = outbuf;
1da177e4
LT		 691 break;
692 case TASKFILE_MULTI_IN:
693 if (!drive->mult_count) {
694 /* (hs): give up if multcount is not set */
695 printk(KERN_ERR "%s: %s Multimode Read failure " \
696 "multcount is not set\n",
eb63963a 697 drive->name, __func__);
1da177e4
LT		 698 err = -EPERM;
699 goto abort;
700 }
701 /* fall through */
702 case TASKFILE_IN:
ac026ff2
BZ		 703 /* fall through */
704 case TASKFILE_IN_DMAQ:
705 case TASKFILE_IN_DMA:
706 nsect = taskin / SECTOR_SIZE;
707 data_buf = inbuf;
1da177e4
LT		 708 break;
709 case TASKFILE_NO_DATA:
1da177e4
LT		 710 break;
711 default:
712 err = -EFAULT;
713 goto abort;
714 }
715
ac026ff2
BZ		 716 if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA)
717 nsect = 0;
718 else if (!nsect) {
719 nsect = (args.tf.hob_nsect << 8) | args.tf.nsect;
720
721 if (!nsect) {
722 printk(KERN_ERR "%s: in/out command without data\n",
723 drive->name);
724 err = -EFAULT;
725 goto abort;
726 }
727 }
728
729 if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE)
730 args.tf_flags |= IDE_TFLAG_WRITE;
731
732 err = ide_raw_taskfile(drive, &args, data_buf, nsect);
733
650d841d
BZ		 734 memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2);
735 memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE);
866e2ec9
BZ		 736
737 if ((args.tf_flags & IDE_TFLAG_FLAGGED_SET_IN_FLAGS) &&
738 req_task->in_flags.all == 0) {
739 req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS;
740 if (drive->addressing == 1)
741 req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8);
742 }
1da177e4
LT		 743
744 if (copy_to_user(buf, req_task, tasksize)) {
745 err = -EFAULT;
746 goto abort;
747 }
748 if (taskout) {
749 int outtotal = tasksize;
750 if (copy_to_user(buf + outtotal, outbuf, taskout)) {
751 err = -EFAULT;
752 goto abort;
753 }
754 }
755 if (taskin) {
756 int intotal = tasksize + taskout;
757 if (copy_to_user(buf + intotal, inbuf, taskin)) {
758 err = -EFAULT;
759 goto abort;
760 }
761 }
762abort:
763 kfree(req_task);
6044ec88
JJ		 764 kfree(outbuf);
765 kfree(inbuf);
1da177e4
LT		 766
767// printk("IDE Taskfile ioctl ended. rc = %i\n", err);
768
1da177e4
LT		 769 return err;
770}
26a5b040 771#endif
1da177e4 772
1da177e4
LT		 773int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
774{
5a9e77af
BZ		 775 u8 *buf = NULL;
776 int bufsize = 0, err = 0;
777 u8 args[4], xfer_rate = 0;
1da177e4 778 ide_task_t tfargs;
650d841d 779 struct ide_taskfile *tf = &tfargs.tf;
5efe7c54 780 struct hd_driveid *id = drive->id;
1da177e4
LT		 781
782 if (NULL == (void *) arg) {
783 struct request rq;
145b75e9 784
1da177e4 785 ide_init_drive_cmd(&rq);
852738f3 786 rq.cmd_type = REQ_TYPE_ATA_TASKFILE;
145b75e9 787
1da177e4
LT		 788 return ide_do_drive_cmd(drive, &rq, ide_wait);
789 }
790
791 if (copy_from_user(args, (void __user *)arg, 4))
792 return -EFAULT;
793
794 memset(&tfargs, 0, sizeof(ide_task_t));
650d841d 795 tf->feature = args[2];
5a9e77af
BZ		 796 if (args[0] == WIN_SMART) {
797 tf->nsect = args[3];
798 tf->lbal = args[1];
799 tf->lbam = 0x4f;
800 tf->lbah = 0xc2;
801 tfargs.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_IN_NSECT;
802 } else {
803 tf->nsect = args[1];
804 tfargs.tf_flags = IDE_TFLAG_OUT_FEATURE |
805 IDE_TFLAG_OUT_NSECT | IDE_TFLAG_IN_NSECT;
806 }
650d841d 807 tf->command = args[0];
5a9e77af 808 tfargs.data_phase = args[3] ? TASKFILE_IN : TASKFILE_NO_DATA;
1da177e4
LT		 809
810 if (args[3]) {
5a9e77af
BZ		 811 tfargs.tf_flags |= IDE_TFLAG_IO_16BIT;
812 bufsize = SECTOR_WORDS * 4 * args[3];
813 buf = kzalloc(bufsize, GFP_KERNEL);
814 if (buf == NULL)
1da177e4 815 return -ENOMEM;
1da177e4 816 }
5a9e77af 817
5efe7c54
BZ		 818 if (tf->command == WIN_SETFEATURES &&
819 tf->feature == SETFEATURES_XFER &&
820 tf->nsect >= XFER_SW_DMA_0 &&
821 (id->dma_ultra || id->dma_mword || id->dma_1word)) {
1da177e4 822 xfer_rate = args[1];
af10f773
BZ		 823 if (tf->nsect > XFER_UDMA_2 && !eighty_ninty_three(drive)) {
824 printk(KERN_WARNING "%s: UDMA speeds >UDMA33 cannot "
825 "be set\n", drive->name);
1da177e4 826 goto abort;
af10f773 827 }
1da177e4
LT		 828 }
829
5a9e77af
BZ		 830 err = ide_raw_taskfile(drive, &tfargs, buf, args[3]);
831
832 args[0] = tf->status;
833 args[1] = tf->error;
834 args[2] = tf->nsect;
1da177e4
LT		 835
836 if (!err && xfer_rate) {
837 /* active-retuning-calls future */
838 ide_set_xfer_rate(drive, xfer_rate);
839 ide_driveid_update(drive);
840 }
841abort:
5a9e77af 842 if (copy_to_user((void __user *)arg, &args, 4))
1da177e4 843 err = -EFAULT;
5a9e77af
BZ		 844 if (buf) {
845 if (copy_to_user((void __user *)(arg + 4), buf, bufsize))
846 err = -EFAULT;
847 kfree(buf);
848 }
1da177e4
LT		 849 return err;
850}
851
1da177e4
LT		 852int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
853{
854 void __user *p = (void __user *)arg;
855 int err = 0;
14b89ef9
BZ		 856 u8 args[7];
857 ide_task_t task;
1da177e4
LT		 858
859 if (copy_from_user(args, p, 7))
860 return -EFAULT;
14b89ef9
BZ		 861
862 memset(&task, 0, sizeof(task));
863 memcpy(&task.tf_array[7], &args[1], 6);
864 task.tf.command = args[0];
657cc1a8 865 task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
14b89ef9
BZ		 866
867 err = ide_no_data_taskfile(drive, &task);
868
869 args[0] = task.tf.command;
870 memcpy(&args[1], &task.tf_array[7], 6);
871
872 if (copy_to_user(p, args, 7))
1da177e4 873 err = -EFAULT;
14b89ef9 874
1da177e4
LT		 875 return err;
876}
kernel source for telekom puls (alcatel/mediatek)