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ide: merge ->atapi_*put_bytes and ->ata_*put_data methods
[deliverable/linux.git] / drivers / ide / ide-taskfile.c
1 /*
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
5 * IBM Storage Technology Division
6 * Copyright (C) 2003-2004, 2007 Bartlomiej Zolnierkiewicz
7 *
8 * The big the bad and the ugly.
9 */
10
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>
17 #include <linux/sched.h>
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>
29 #include <linux/scatterlist.h>
30
31 #include <asm/byteorder.h>
32 #include <asm/irq.h>
33 #include <asm/uaccess.h>
34 #include <asm/io.h>
35
36 void ide_tf_load(ide_drive_t *drive, ide_task_t *task)
37 {
38 ide_hwif_t *hwif = drive->hwif;
39 struct ide_io_ports *io_ports = &hwif->io_ports;
40 struct ide_taskfile *tf = &task->tf;
41 u8 HIHI = (task->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;
42
43 if (task->tf_flags & IDE_TFLAG_FLAGGED)
44 HIHI = 0xFF;
45
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);
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);
55 #endif
56
57 ide_set_irq(drive, 1);
58
59 if ((task->tf_flags & IDE_TFLAG_NO_SELECT_MASK) == 0)
60 SELECT_MASK(drive, 0);
61
62 if (task->tf_flags & IDE_TFLAG_OUT_DATA)
63 hwif->OUTW((tf->hob_data << 8) | tf->data, io_ports->data_addr);
64
65 if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
66 hwif->OUTB(tf->hob_feature, io_ports->feature_addr);
67 if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
68 hwif->OUTB(tf->hob_nsect, io_ports->nsect_addr);
69 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
70 hwif->OUTB(tf->hob_lbal, io_ports->lbal_addr);
71 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
72 hwif->OUTB(tf->hob_lbam, io_ports->lbam_addr);
73 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
74 hwif->OUTB(tf->hob_lbah, io_ports->lbah_addr);
75
76 if (task->tf_flags & IDE_TFLAG_OUT_FEATURE)
77 hwif->OUTB(tf->feature, io_ports->feature_addr);
78 if (task->tf_flags & IDE_TFLAG_OUT_NSECT)
79 hwif->OUTB(tf->nsect, io_ports->nsect_addr);
80 if (task->tf_flags & IDE_TFLAG_OUT_LBAL)
81 hwif->OUTB(tf->lbal, io_ports->lbal_addr);
82 if (task->tf_flags & IDE_TFLAG_OUT_LBAM)
83 hwif->OUTB(tf->lbam, io_ports->lbam_addr);
84 if (task->tf_flags & IDE_TFLAG_OUT_LBAH)
85 hwif->OUTB(tf->lbah, io_ports->lbah_addr);
86
87 if (task->tf_flags & IDE_TFLAG_OUT_DEVICE)
88 hwif->OUTB((tf->device & HIHI) | drive->select.all,
89 io_ports->device_addr);
90 }
91
92 int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf)
93 {
94 ide_task_t args;
95
96 memset(&args, 0, sizeof(ide_task_t));
97 args.tf.nsect = 0x01;
98 if (drive->media == ide_disk)
99 args.tf.command = WIN_IDENTIFY;
100 else
101 args.tf.command = WIN_PIDENTIFY;
102 args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
103 args.data_phase = TASKFILE_IN;
104 return ide_raw_taskfile(drive, &args, buf, 1);
105 }
106
107 static int inline task_dma_ok(ide_task_t *task)
108 {
109 if (blk_fs_request(task->rq) || (task->tf_flags & IDE_TFLAG_FLAGGED))
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
126 static ide_startstop_t task_no_data_intr(ide_drive_t *);
127 static ide_startstop_t set_geometry_intr(ide_drive_t *);
128 static ide_startstop_t recal_intr(ide_drive_t *);
129 static ide_startstop_t set_multmode_intr(ide_drive_t *);
130 static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *);
131 static ide_startstop_t task_in_intr(ide_drive_t *);
132
133 ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task)
134 {
135 ide_hwif_t *hwif = HWIF(drive);
136 struct ide_taskfile *tf = &task->tf;
137 ide_handler_t *handler = NULL;
138 const struct ide_dma_ops *dma_ops = hwif->dma_ops;
139
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
152 if ((task->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0)
153 ide_tf_load(drive, task);
154
155 switch (task->data_phase) {
156 case TASKFILE_MULTI_OUT:
157 case TASKFILE_OUT:
158 hwif->OUTBSYNC(drive, tf->command, hwif->io_ports.command_addr);
159 ndelay(400); /* FIXME */
160 return pre_task_out_intr(drive, task->rq);
161 case TASKFILE_MULTI_IN:
162 case TASKFILE_IN:
163 handler = task_in_intr;
164 /* fall-through */
165 case TASKFILE_NO_DATA:
166 if (handler == NULL)
167 handler = task_no_data_intr;
168 /* WIN_{SPECIFY,RESTORE,SETMULT} use custom handlers */
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);
178 return ide_started;
179 default:
180 if (task_dma_ok(task) == 0 || drive->using_dma == 0 ||
181 dma_ops->dma_setup(drive))
182 return ide_stopped;
183 dma_ops->dma_exec_cmd(drive, tf->command);
184 dma_ops->dma_start(drive);
185 return ide_started;
186 }
187 }
188 EXPORT_SYMBOL_GPL(do_rw_taskfile);
189
190 /*
191 * set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd.
192 */
193 static ide_startstop_t set_multmode_intr(ide_drive_t *drive)
194 {
195 u8 stat = ide_read_status(drive);
196
197 if (OK_STAT(stat, READY_STAT, BAD_STAT))
198 drive->mult_count = drive->mult_req;
199 else {
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 */
210 static ide_startstop_t set_geometry_intr(ide_drive_t *drive)
211 {
212 int retries = 5;
213 u8 stat;
214
215 while (((stat = ide_read_status(drive)) & BUSY_STAT) && retries--)
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
224 BUG_ON(HWGROUP(drive)->handler != NULL);
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 */
232 static ide_startstop_t recal_intr(ide_drive_t *drive)
233 {
234 u8 stat = ide_read_status(drive);
235
236 if (!OK_STAT(stat, READY_STAT, BAD_STAT))
237 return ide_error(drive, "recal_intr", stat);
238 return ide_stopped;
239 }
240
241 /*
242 * Handler for commands without a data phase
243 */
244 static ide_startstop_t task_no_data_intr(ide_drive_t *drive)
245 {
246 ide_task_t *args = HWGROUP(drive)->rq->special;
247 u8 stat;
248
249 local_irq_enable_in_hardirq();
250 stat = ide_read_status(drive);
251
252 if (!OK_STAT(stat, READY_STAT, BAD_STAT))
253 return ide_error(drive, "task_no_data_intr", stat);
254 /* calls ide_end_drive_cmd */
255
256 if (args)
257 ide_end_drive_cmd(drive, stat, ide_read_error(drive));
258
259 return ide_stopped;
260 }
261
262 static u8 wait_drive_not_busy(ide_drive_t *drive)
263 {
264 int retries;
265 u8 stat;
266
267 /*
268 * Last sector was transfered, wait until drive is ready.
269 * This can take up to 10 usec, but we will wait max 1 ms.
270 */
271 for (retries = 0; retries < 100; retries++) {
272 stat = ide_read_status(drive);
273
274 if (stat & BUSY_STAT)
275 udelay(10);
276 else
277 break;
278 }
279
280 if (stat & BUSY_STAT)
281 printk(KERN_ERR "%s: drive still BUSY!\n", drive->name);
282
283 return stat;
284 }
285
286 static void ide_pio_sector(ide_drive_t *drive, struct request *rq,
287 unsigned int write)
288 {
289 ide_hwif_t *hwif = drive->hwif;
290 struct scatterlist *sg = hwif->sg_table;
291 struct scatterlist *cursg = hwif->cursg;
292 struct page *page;
293 #ifdef CONFIG_HIGHMEM
294 unsigned long flags;
295 #endif
296 unsigned int offset;
297 u8 *buf;
298
299 cursg = hwif->cursg;
300 if (!cursg) {
301 cursg = sg;
302 hwif->cursg = sg;
303 }
304
305 page = sg_page(cursg);
306 offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE;
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
320 if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) {
321 hwif->cursg = sg_next(hwif->cursg);
322 hwif->cursg_ofs = 0;
323 }
324
325 /* do the actual data transfer */
326 if (write)
327 hwif->output_data(drive, rq, buf, SECTOR_SIZE);
328 else
329 hwif->input_data(drive, rq, buf, SECTOR_SIZE);
330
331 kunmap_atomic(buf, KM_BIO_SRC_IRQ);
332 #ifdef CONFIG_HIGHMEM
333 local_irq_restore(flags);
334 #endif
335 }
336
337 static void ide_pio_multi(ide_drive_t *drive, struct request *rq,
338 unsigned int write)
339 {
340 unsigned int nsect;
341
342 nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count);
343 while (nsect--)
344 ide_pio_sector(drive, rq, write);
345 }
346
347 static void ide_pio_datablock(ide_drive_t *drive, struct request *rq,
348 unsigned int write)
349 {
350 u8 saved_io_32bit = drive->io_32bit;
351
352 if (rq->bio) /* fs request */
353 rq->errors = 0;
354
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
362 touch_softlockup_watchdog();
363
364 switch (drive->hwif->data_phase) {
365 case TASKFILE_MULTI_IN:
366 case TASKFILE_MULTI_OUT:
367 ide_pio_multi(drive, rq, write);
368 break;
369 default:
370 ide_pio_sector(drive, rq, write);
371 break;
372 }
373
374 drive->io_32bit = saved_io_32bit;
375 }
376
377 static 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
412 void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat)
413 {
414 if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
415 u8 err = ide_read_error(drive);
416
417 ide_end_drive_cmd(drive, stat, err);
418 return;
419 }
420
421 if (rq->rq_disk) {
422 ide_driver_t *drv;
423
424 drv = *(ide_driver_t **)rq->rq_disk->private_data;;
425 drv->end_request(drive, 1, rq->nr_sectors);
426 } else
427 ide_end_request(drive, 1, rq->nr_sectors);
428 }
429
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 */
436 static 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
449 /*
450 * Handler for command with PIO data-in phase (Read/Read Multiple).
451 */
452 static ide_startstop_t task_in_intr(ide_drive_t *drive)
453 {
454 ide_hwif_t *hwif = drive->hwif;
455 struct request *rq = HWGROUP(drive)->rq;
456 u8 stat = ide_read_status(drive);
457
458 /* Error? */
459 if (stat & ERR_STAT)
460 return task_error(drive, rq, __func__, stat);
461
462 /* Didn't want any data? Odd. */
463 if (!(stat & DRQ_STAT))
464 return task_in_unexpected(drive, rq, stat);
465
466 ide_pio_datablock(drive, rq, 0);
467
468 /* Are we done? Check status and finish transfer. */
469 if (!hwif->nleft) {
470 stat = wait_drive_not_busy(drive);
471 if (!OK_STAT(stat, 0, BAD_STAT))
472 return task_error(drive, rq, __func__, stat);
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 }
482
483 /*
484 * Handler for command with PIO data-out phase (Write/Write Multiple).
485 */
486 static 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;
490 u8 stat = ide_read_status(drive);
491
492 if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat))
493 return task_error(drive, rq, __func__, stat);
494
495 /* Deal with unexpected ATA data phase. */
496 if (((stat & DRQ_STAT) == 0) ^ !hwif->nleft)
497 return task_error(drive, rq, __func__, stat);
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
511 static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq)
512 {
513 ide_startstop_t startstop;
514
515 if (ide_wait_stat(&startstop, drive, DRQ_STAT,
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 }
532
533 int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect)
534 {
535 struct request rq;
536
537 memset(&rq, 0, sizeof(rq));
538 rq.ref_count = 1;
539 rq.cmd_type = REQ_TYPE_ATA_TASKFILE;
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 */
548 rq.hard_nr_sectors = rq.nr_sectors = nsect;
549 rq.hard_cur_sectors = rq.current_nr_sectors = nsect;
550
551 if (task->tf_flags & IDE_TFLAG_WRITE)
552 rq.cmd_flags |= REQ_RW;
553
554 rq.special = task;
555 task->rq = &rq;
556
557 return ide_do_drive_cmd(drive, &rq, ide_wait);
558 }
559
560 EXPORT_SYMBOL(ide_raw_taskfile);
561
562 int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task)
563 {
564 task->data_phase = TASKFILE_NO_DATA;
565
566 return ide_raw_taskfile(drive, task, NULL, 0);
567 }
568 EXPORT_SYMBOL_GPL(ide_no_data_taskfile);
569
570 #ifdef CONFIG_IDE_TASK_IOCTL
571 int 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;
577 u8 *data_buf = NULL;
578 int err = 0;
579 int tasksize = sizeof(struct ide_task_request_s);
580 unsigned int taskin = 0;
581 unsigned int taskout = 0;
582 u16 nsect = 0;
583 char __user *buf = (char __user *)arg;
584
585 // printk("IDE Taskfile ...\n");
586
587 req_task = kzalloc(tasksize, GFP_KERNEL);
588 if (req_task == NULL) return -ENOMEM;
589 if (copy_from_user(req_task, buf, tasksize)) {
590 kfree(req_task);
591 return -EFAULT;
592 }
593
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 }
601
602 if (taskout) {
603 int outtotal = tasksize;
604 outbuf = kzalloc(taskout, GFP_KERNEL);
605 if (outbuf == NULL) {
606 err = -ENOMEM;
607 goto abort;
608 }
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;
617 inbuf = kzalloc(taskin, GFP_KERNEL);
618 if (inbuf == NULL) {
619 err = -ENOMEM;
620 goto abort;
621 }
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));
629
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);
632
633 args.data_phase = req_task->data_phase;
634
635 args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE |
636 IDE_TFLAG_IN_TF;
637 if (drive->addressing == 1)
638 args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB);
639
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;
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;
669 }
670
671 if (req_task->in_flags.b.data)
672 args.tf_flags |= IDE_TFLAG_IN_DATA;
673
674 switch(req_task->data_phase) {
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",
680 drive->name, __func__);
681 err = -EPERM;
682 goto abort;
683 }
684 /* fall through */
685 case TASKFILE_OUT:
686 /* fall through */
687 case TASKFILE_OUT_DMAQ:
688 case TASKFILE_OUT_DMA:
689 nsect = taskout / SECTOR_SIZE;
690 data_buf = outbuf;
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",
697 drive->name, __func__);
698 err = -EPERM;
699 goto abort;
700 }
701 /* fall through */
702 case TASKFILE_IN:
703 /* fall through */
704 case TASKFILE_IN_DMAQ:
705 case TASKFILE_IN_DMA:
706 nsect = taskin / SECTOR_SIZE;
707 data_buf = inbuf;
708 break;
709 case TASKFILE_NO_DATA:
710 break;
711 default:
712 err = -EFAULT;
713 goto abort;
714 }
715
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
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);
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 }
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 }
762 abort:
763 kfree(req_task);
764 kfree(outbuf);
765 kfree(inbuf);
766
767 // printk("IDE Taskfile ioctl ended. rc = %i\n", err);
768
769 return err;
770 }
771 #endif
772
773 int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
774 {
775 u8 *buf = NULL;
776 int bufsize = 0, err = 0;
777 u8 args[4], xfer_rate = 0;
778 ide_task_t tfargs;
779 struct ide_taskfile *tf = &tfargs.tf;
780 struct hd_driveid *id = drive->id;
781
782 if (NULL == (void *) arg) {
783 struct request rq;
784
785 ide_init_drive_cmd(&rq);
786 rq.cmd_type = REQ_TYPE_ATA_TASKFILE;
787
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));
795 tf->feature = args[2];
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 }
807 tf->command = args[0];
808 tfargs.data_phase = args[3] ? TASKFILE_IN : TASKFILE_NO_DATA;
809
810 if (args[3]) {
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)
815 return -ENOMEM;
816 }
817
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)) {
822 xfer_rate = args[1];
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);
826 goto abort;
827 }
828 }
829
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;
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 }
841 abort:
842 if (copy_to_user((void __user *)arg, &args, 4))
843 err = -EFAULT;
844 if (buf) {
845 if (copy_to_user((void __user *)(arg + 4), buf, bufsize))
846 err = -EFAULT;
847 kfree(buf);
848 }
849 return err;
850 }
851
852 int 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;
856 u8 args[7];
857 ide_task_t task;
858
859 if (copy_from_user(args, p, 7))
860 return -EFAULT;
861
862 memset(&task, 0, sizeof(task));
863 memcpy(&task.tf_array[7], &args[1], 6);
864 task.tf.command = args[0];
865 task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
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))
873 err = -EFAULT;
874
875 return err;
876 }
Linux kernel - Deliverables
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