Firmware: fix typo in example code
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / ide / ide-taskfile.c
blob1fbdb746dc88a761a7edf9a66d49e7f68e66b179
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
8 * The big the bad and the ugly.
9 */
11 #include <linux/types.h>
12 #include <linux/string.h>
13 #include <linux/kernel.h>
14 #include <linux/sched.h>
15 #include <linux/interrupt.h>
16 #include <linux/errno.h>
17 #include <linux/slab.h>
18 #include <linux/delay.h>
19 #include <linux/hdreg.h>
20 #include <linux/ide.h>
21 #include <linux/scatterlist.h>
23 #include <asm/uaccess.h>
24 #include <asm/io.h>
26 void ide_tf_dump(const char *s, struct ide_taskfile *tf)
28 #ifdef DEBUG
29 printk("%s: tf: feat 0x%02x nsect 0x%02x lbal 0x%02x "
30 "lbam 0x%02x lbah 0x%02x dev 0x%02x cmd 0x%02x\n",
31 s, tf->feature, tf->nsect, tf->lbal,
32 tf->lbam, tf->lbah, tf->device, tf->command);
33 printk("%s: hob: nsect 0x%02x lbal 0x%02x "
34 "lbam 0x%02x lbah 0x%02x\n",
35 s, tf->hob_nsect, tf->hob_lbal,
36 tf->hob_lbam, tf->hob_lbah);
37 #endif
40 int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf)
42 ide_task_t args;
44 memset(&args, 0, sizeof(ide_task_t));
45 args.tf.nsect = 0x01;
46 if (drive->media == ide_disk)
47 args.tf.command = WIN_IDENTIFY;
48 else
49 args.tf.command = WIN_PIDENTIFY;
50 args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
51 args.data_phase = TASKFILE_IN;
52 return ide_raw_taskfile(drive, &args, buf, 1);
55 static ide_startstop_t task_no_data_intr(ide_drive_t *);
56 static ide_startstop_t set_geometry_intr(ide_drive_t *);
57 static ide_startstop_t recal_intr(ide_drive_t *);
58 static ide_startstop_t set_multmode_intr(ide_drive_t *);
59 static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *);
60 static ide_startstop_t task_in_intr(ide_drive_t *);
62 ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task)
64 ide_hwif_t *hwif = HWIF(drive);
65 struct ide_taskfile *tf = &task->tf;
66 ide_handler_t *handler = NULL;
67 const struct ide_dma_ops *dma_ops = hwif->dma_ops;
69 if (task->data_phase == TASKFILE_MULTI_IN ||
70 task->data_phase == TASKFILE_MULTI_OUT) {
71 if (!drive->mult_count) {
72 printk(KERN_ERR "%s: multimode not set!\n",
73 drive->name);
74 return ide_stopped;
78 if (task->tf_flags & IDE_TFLAG_FLAGGED)
79 task->tf_flags |= IDE_TFLAG_FLAGGED_SET_IN_FLAGS;
81 if ((task->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) {
82 ide_tf_dump(drive->name, tf);
83 ide_set_irq(drive, 1);
84 SELECT_MASK(drive, 0);
85 hwif->tf_load(drive, task);
88 switch (task->data_phase) {
89 case TASKFILE_MULTI_OUT:
90 case TASKFILE_OUT:
91 hwif->OUTBSYNC(hwif, tf->command, hwif->io_ports.command_addr);
92 ndelay(400); /* FIXME */
93 return pre_task_out_intr(drive, task->rq);
94 case TASKFILE_MULTI_IN:
95 case TASKFILE_IN:
96 handler = task_in_intr;
97 /* fall-through */
98 case TASKFILE_NO_DATA:
99 if (handler == NULL)
100 handler = task_no_data_intr;
101 /* WIN_{SPECIFY,RESTORE,SETMULT} use custom handlers */
102 if (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) {
103 switch (tf->command) {
104 case WIN_SPECIFY: handler = set_geometry_intr; break;
105 case WIN_RESTORE: handler = recal_intr; break;
106 case WIN_SETMULT: handler = set_multmode_intr; break;
109 ide_execute_command(drive, tf->command, handler,
110 WAIT_WORSTCASE, NULL);
111 return ide_started;
112 default:
113 if (drive->using_dma == 0 || dma_ops->dma_setup(drive))
114 return ide_stopped;
115 dma_ops->dma_exec_cmd(drive, tf->command);
116 dma_ops->dma_start(drive);
117 return ide_started;
120 EXPORT_SYMBOL_GPL(do_rw_taskfile);
123 * set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd.
125 static ide_startstop_t set_multmode_intr(ide_drive_t *drive)
127 u8 stat = ide_read_status(drive);
129 if (OK_STAT(stat, READY_STAT, BAD_STAT))
130 drive->mult_count = drive->mult_req;
131 else {
132 drive->mult_req = drive->mult_count = 0;
133 drive->special.b.recalibrate = 1;
134 (void) ide_dump_status(drive, "set_multmode", stat);
136 return ide_stopped;
140 * set_geometry_intr() is invoked on completion of a WIN_SPECIFY cmd.
142 static ide_startstop_t set_geometry_intr(ide_drive_t *drive)
144 int retries = 5;
145 u8 stat;
147 while (((stat = ide_read_status(drive)) & BUSY_STAT) && retries--)
148 udelay(10);
150 if (OK_STAT(stat, READY_STAT, BAD_STAT))
151 return ide_stopped;
153 if (stat & (ERR_STAT|DRQ_STAT))
154 return ide_error(drive, "set_geometry_intr", stat);
156 ide_set_handler(drive, &set_geometry_intr, WAIT_WORSTCASE, NULL);
157 return ide_started;
161 * recal_intr() is invoked on completion of a WIN_RESTORE (recalibrate) cmd.
163 static ide_startstop_t recal_intr(ide_drive_t *drive)
165 u8 stat = ide_read_status(drive);
167 if (!OK_STAT(stat, READY_STAT, BAD_STAT))
168 return ide_error(drive, "recal_intr", stat);
169 return ide_stopped;
173 * Handler for commands without a data phase
175 static ide_startstop_t task_no_data_intr(ide_drive_t *drive)
177 ide_task_t *args = HWGROUP(drive)->rq->special;
178 u8 stat;
180 local_irq_enable_in_hardirq();
181 stat = ide_read_status(drive);
183 if (!OK_STAT(stat, READY_STAT, BAD_STAT))
184 return ide_error(drive, "task_no_data_intr", stat);
185 /* calls ide_end_drive_cmd */
187 if (args)
188 ide_end_drive_cmd(drive, stat, ide_read_error(drive));
190 return ide_stopped;
193 static u8 wait_drive_not_busy(ide_drive_t *drive)
195 int retries;
196 u8 stat;
199 * Last sector was transfered, wait until device is ready. This can
200 * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms.
202 for (retries = 0; retries < 1000; retries++) {
203 stat = ide_read_status(drive);
205 if (stat & BUSY_STAT)
206 udelay(10);
207 else
208 break;
211 if (stat & BUSY_STAT)
212 printk(KERN_ERR "%s: drive still BUSY!\n", drive->name);
214 return stat;
217 static void ide_pio_sector(ide_drive_t *drive, struct request *rq,
218 unsigned int write)
220 ide_hwif_t *hwif = drive->hwif;
221 struct scatterlist *sg = hwif->sg_table;
222 struct scatterlist *cursg = hwif->cursg;
223 struct page *page;
224 #ifdef CONFIG_HIGHMEM
225 unsigned long flags;
226 #endif
227 unsigned int offset;
228 u8 *buf;
230 cursg = hwif->cursg;
231 if (!cursg) {
232 cursg = sg;
233 hwif->cursg = sg;
236 page = sg_page(cursg);
237 offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE;
239 /* get the current page and offset */
240 page = nth_page(page, (offset >> PAGE_SHIFT));
241 offset %= PAGE_SIZE;
243 #ifdef CONFIG_HIGHMEM
244 local_irq_save(flags);
245 #endif
246 buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset;
248 hwif->nleft--;
249 hwif->cursg_ofs++;
251 if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) {
252 hwif->cursg = sg_next(hwif->cursg);
253 hwif->cursg_ofs = 0;
256 /* do the actual data transfer */
257 if (write)
258 hwif->output_data(drive, rq, buf, SECTOR_SIZE);
259 else
260 hwif->input_data(drive, rq, buf, SECTOR_SIZE);
262 kunmap_atomic(buf, KM_BIO_SRC_IRQ);
263 #ifdef CONFIG_HIGHMEM
264 local_irq_restore(flags);
265 #endif
268 static void ide_pio_multi(ide_drive_t *drive, struct request *rq,
269 unsigned int write)
271 unsigned int nsect;
273 nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count);
274 while (nsect--)
275 ide_pio_sector(drive, rq, write);
278 static void ide_pio_datablock(ide_drive_t *drive, struct request *rq,
279 unsigned int write)
281 u8 saved_io_32bit = drive->io_32bit;
283 if (rq->bio) /* fs request */
284 rq->errors = 0;
286 if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
287 ide_task_t *task = rq->special;
289 if (task->tf_flags & IDE_TFLAG_IO_16BIT)
290 drive->io_32bit = 0;
293 touch_softlockup_watchdog();
295 switch (drive->hwif->data_phase) {
296 case TASKFILE_MULTI_IN:
297 case TASKFILE_MULTI_OUT:
298 ide_pio_multi(drive, rq, write);
299 break;
300 default:
301 ide_pio_sector(drive, rq, write);
302 break;
305 drive->io_32bit = saved_io_32bit;
308 static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq,
309 const char *s, u8 stat)
311 if (rq->bio) {
312 ide_hwif_t *hwif = drive->hwif;
313 int sectors = hwif->nsect - hwif->nleft;
315 switch (hwif->data_phase) {
316 case TASKFILE_IN:
317 if (hwif->nleft)
318 break;
319 /* fall through */
320 case TASKFILE_OUT:
321 sectors--;
322 break;
323 case TASKFILE_MULTI_IN:
324 if (hwif->nleft)
325 break;
326 /* fall through */
327 case TASKFILE_MULTI_OUT:
328 sectors -= drive->mult_count;
329 default:
330 break;
333 if (sectors > 0) {
334 ide_driver_t *drv;
336 drv = *(ide_driver_t **)rq->rq_disk->private_data;
337 drv->end_request(drive, 1, sectors);
340 return ide_error(drive, s, stat);
343 void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat)
345 if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
346 u8 err = ide_read_error(drive);
348 ide_end_drive_cmd(drive, stat, err);
349 return;
352 if (rq->rq_disk) {
353 ide_driver_t *drv;
355 drv = *(ide_driver_t **)rq->rq_disk->private_data;;
356 drv->end_request(drive, 1, rq->nr_sectors);
357 } else
358 ide_end_request(drive, 1, rq->nr_sectors);
362 * We got an interrupt on a task_in case, but no errors and no DRQ.
364 * It might be a spurious irq (shared irq), but it might be a
365 * command that had no output.
367 static ide_startstop_t task_in_unexpected(ide_drive_t *drive, struct request *rq, u8 stat)
369 /* Command all done? */
370 if (OK_STAT(stat, READY_STAT, BUSY_STAT)) {
371 task_end_request(drive, rq, stat);
372 return ide_stopped;
375 /* Assume it was a spurious irq */
376 ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
377 return ide_started;
381 * Handler for command with PIO data-in phase (Read/Read Multiple).
383 static ide_startstop_t task_in_intr(ide_drive_t *drive)
385 ide_hwif_t *hwif = drive->hwif;
386 struct request *rq = HWGROUP(drive)->rq;
387 u8 stat = ide_read_status(drive);
389 /* Error? */
390 if (stat & ERR_STAT)
391 return task_error(drive, rq, __func__, stat);
393 /* Didn't want any data? Odd. */
394 if (!(stat & DRQ_STAT))
395 return task_in_unexpected(drive, rq, stat);
397 ide_pio_datablock(drive, rq, 0);
399 /* Are we done? Check status and finish transfer. */
400 if (!hwif->nleft) {
401 stat = wait_drive_not_busy(drive);
402 if (!OK_STAT(stat, 0, BAD_STAT))
403 return task_error(drive, rq, __func__, stat);
404 task_end_request(drive, rq, stat);
405 return ide_stopped;
408 /* Still data left to transfer. */
409 ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
411 return ide_started;
415 * Handler for command with PIO data-out phase (Write/Write Multiple).
417 static ide_startstop_t task_out_intr (ide_drive_t *drive)
419 ide_hwif_t *hwif = drive->hwif;
420 struct request *rq = HWGROUP(drive)->rq;
421 u8 stat = ide_read_status(drive);
423 if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat))
424 return task_error(drive, rq, __func__, stat);
426 /* Deal with unexpected ATA data phase. */
427 if (((stat & DRQ_STAT) == 0) ^ !hwif->nleft)
428 return task_error(drive, rq, __func__, stat);
430 if (!hwif->nleft) {
431 task_end_request(drive, rq, stat);
432 return ide_stopped;
435 /* Still data left to transfer. */
436 ide_pio_datablock(drive, rq, 1);
437 ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
439 return ide_started;
442 static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq)
444 ide_startstop_t startstop;
446 if (ide_wait_stat(&startstop, drive, DRQ_STAT,
447 drive->bad_wstat, WAIT_DRQ)) {
448 printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n",
449 drive->name,
450 drive->hwif->data_phase ? "MULT" : "",
451 drive->addressing ? "_EXT" : "");
452 return startstop;
455 if (!drive->unmask)
456 local_irq_disable();
458 ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
459 ide_pio_datablock(drive, rq, 1);
461 return ide_started;
464 int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect)
466 struct request *rq;
467 int error;
469 rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
470 rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
471 rq->buffer = buf;
474 * (ks) We transfer currently only whole sectors.
475 * This is suffient for now. But, it would be great,
476 * if we would find a solution to transfer any size.
477 * To support special commands like READ LONG.
479 rq->hard_nr_sectors = rq->nr_sectors = nsect;
480 rq->hard_cur_sectors = rq->current_nr_sectors = nsect;
482 if (task->tf_flags & IDE_TFLAG_WRITE)
483 rq->cmd_flags |= REQ_RW;
485 rq->special = task;
486 task->rq = rq;
488 error = blk_execute_rq(drive->queue, NULL, rq, 0);
489 blk_put_request(rq);
491 return error;
494 EXPORT_SYMBOL(ide_raw_taskfile);
496 int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task)
498 task->data_phase = TASKFILE_NO_DATA;
500 return ide_raw_taskfile(drive, task, NULL, 0);
502 EXPORT_SYMBOL_GPL(ide_no_data_taskfile);
504 #ifdef CONFIG_IDE_TASK_IOCTL
505 int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
507 ide_task_request_t *req_task;
508 ide_task_t args;
509 u8 *outbuf = NULL;
510 u8 *inbuf = NULL;
511 u8 *data_buf = NULL;
512 int err = 0;
513 int tasksize = sizeof(struct ide_task_request_s);
514 unsigned int taskin = 0;
515 unsigned int taskout = 0;
516 u16 nsect = 0;
517 char __user *buf = (char __user *)arg;
519 // printk("IDE Taskfile ...\n");
521 req_task = kzalloc(tasksize, GFP_KERNEL);
522 if (req_task == NULL) return -ENOMEM;
523 if (copy_from_user(req_task, buf, tasksize)) {
524 kfree(req_task);
525 return -EFAULT;
528 taskout = req_task->out_size;
529 taskin = req_task->in_size;
531 if (taskin > 65536 || taskout > 65536) {
532 err = -EINVAL;
533 goto abort;
536 if (taskout) {
537 int outtotal = tasksize;
538 outbuf = kzalloc(taskout, GFP_KERNEL);
539 if (outbuf == NULL) {
540 err = -ENOMEM;
541 goto abort;
543 if (copy_from_user(outbuf, buf + outtotal, taskout)) {
544 err = -EFAULT;
545 goto abort;
549 if (taskin) {
550 int intotal = tasksize + taskout;
551 inbuf = kzalloc(taskin, GFP_KERNEL);
552 if (inbuf == NULL) {
553 err = -ENOMEM;
554 goto abort;
556 if (copy_from_user(inbuf, buf + intotal, taskin)) {
557 err = -EFAULT;
558 goto abort;
562 memset(&args, 0, sizeof(ide_task_t));
564 memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2);
565 memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE);
567 args.data_phase = req_task->data_phase;
569 args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE |
570 IDE_TFLAG_IN_TF;
571 if (drive->addressing == 1)
572 args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB);
574 if (req_task->out_flags.all) {
575 args.tf_flags |= IDE_TFLAG_FLAGGED;
577 if (req_task->out_flags.b.data)
578 args.tf_flags |= IDE_TFLAG_OUT_DATA;
580 if (req_task->out_flags.b.nsector_hob)
581 args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT;
582 if (req_task->out_flags.b.sector_hob)
583 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL;
584 if (req_task->out_flags.b.lcyl_hob)
585 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM;
586 if (req_task->out_flags.b.hcyl_hob)
587 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH;
589 if (req_task->out_flags.b.error_feature)
590 args.tf_flags |= IDE_TFLAG_OUT_FEATURE;
591 if (req_task->out_flags.b.nsector)
592 args.tf_flags |= IDE_TFLAG_OUT_NSECT;
593 if (req_task->out_flags.b.sector)
594 args.tf_flags |= IDE_TFLAG_OUT_LBAL;
595 if (req_task->out_flags.b.lcyl)
596 args.tf_flags |= IDE_TFLAG_OUT_LBAM;
597 if (req_task->out_flags.b.hcyl)
598 args.tf_flags |= IDE_TFLAG_OUT_LBAH;
599 } else {
600 args.tf_flags |= IDE_TFLAG_OUT_TF;
601 if (args.tf_flags & IDE_TFLAG_LBA48)
602 args.tf_flags |= IDE_TFLAG_OUT_HOB;
605 if (req_task->in_flags.b.data)
606 args.tf_flags |= IDE_TFLAG_IN_DATA;
608 switch(req_task->data_phase) {
609 case TASKFILE_MULTI_OUT:
610 if (!drive->mult_count) {
611 /* (hs): give up if multcount is not set */
612 printk(KERN_ERR "%s: %s Multimode Write " \
613 "multcount is not set\n",
614 drive->name, __func__);
615 err = -EPERM;
616 goto abort;
618 /* fall through */
619 case TASKFILE_OUT:
620 /* fall through */
621 case TASKFILE_OUT_DMAQ:
622 case TASKFILE_OUT_DMA:
623 nsect = taskout / SECTOR_SIZE;
624 data_buf = 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, __func__);
632 err = -EPERM;
633 goto abort;
635 /* fall through */
636 case TASKFILE_IN:
637 /* fall through */
638 case TASKFILE_IN_DMAQ:
639 case TASKFILE_IN_DMA:
640 nsect = taskin / SECTOR_SIZE;
641 data_buf = inbuf;
642 break;
643 case TASKFILE_NO_DATA:
644 break;
645 default:
646 err = -EFAULT;
647 goto abort;
650 if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA)
651 nsect = 0;
652 else if (!nsect) {
653 nsect = (args.tf.hob_nsect << 8) | args.tf.nsect;
655 if (!nsect) {
656 printk(KERN_ERR "%s: in/out command without data\n",
657 drive->name);
658 err = -EFAULT;
659 goto abort;
663 if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE)
664 args.tf_flags |= IDE_TFLAG_WRITE;
666 err = ide_raw_taskfile(drive, &args, data_buf, nsect);
668 memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2);
669 memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE);
671 if ((args.tf_flags & IDE_TFLAG_FLAGGED_SET_IN_FLAGS) &&
672 req_task->in_flags.all == 0) {
673 req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS;
674 if (drive->addressing == 1)
675 req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8);
678 if (copy_to_user(buf, req_task, tasksize)) {
679 err = -EFAULT;
680 goto abort;
682 if (taskout) {
683 int outtotal = tasksize;
684 if (copy_to_user(buf + outtotal, outbuf, taskout)) {
685 err = -EFAULT;
686 goto abort;
689 if (taskin) {
690 int intotal = tasksize + taskout;
691 if (copy_to_user(buf + intotal, inbuf, taskin)) {
692 err = -EFAULT;
693 goto abort;
696 abort:
697 kfree(req_task);
698 kfree(outbuf);
699 kfree(inbuf);
701 // printk("IDE Taskfile ioctl ended. rc = %i\n", err);
703 return err;
705 #endif
707 int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
709 u8 *buf = NULL;
710 int bufsize = 0, err = 0;
711 u8 args[4], xfer_rate = 0;
712 ide_task_t tfargs;
713 struct ide_taskfile *tf = &tfargs.tf;
714 struct hd_driveid *id = drive->id;
716 if (NULL == (void *) arg) {
717 struct request *rq;
719 rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
720 rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
721 err = blk_execute_rq(drive->queue, NULL, rq, 0);
722 blk_put_request(rq);
724 return err;
727 if (copy_from_user(args, (void __user *)arg, 4))
728 return -EFAULT;
730 memset(&tfargs, 0, sizeof(ide_task_t));
731 tf->feature = args[2];
732 if (args[0] == WIN_SMART) {
733 tf->nsect = args[3];
734 tf->lbal = args[1];
735 tf->lbam = 0x4f;
736 tf->lbah = 0xc2;
737 tfargs.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_IN_NSECT;
738 } else {
739 tf->nsect = args[1];
740 tfargs.tf_flags = IDE_TFLAG_OUT_FEATURE |
741 IDE_TFLAG_OUT_NSECT | IDE_TFLAG_IN_NSECT;
743 tf->command = args[0];
744 tfargs.data_phase = args[3] ? TASKFILE_IN : TASKFILE_NO_DATA;
746 if (args[3]) {
747 tfargs.tf_flags |= IDE_TFLAG_IO_16BIT;
748 bufsize = SECTOR_WORDS * 4 * args[3];
749 buf = kzalloc(bufsize, GFP_KERNEL);
750 if (buf == NULL)
751 return -ENOMEM;
754 if (tf->command == WIN_SETFEATURES &&
755 tf->feature == SETFEATURES_XFER &&
756 tf->nsect >= XFER_SW_DMA_0 &&
757 (id->dma_ultra || id->dma_mword || id->dma_1word)) {
758 xfer_rate = args[1];
759 if (tf->nsect > XFER_UDMA_2 && !eighty_ninty_three(drive)) {
760 printk(KERN_WARNING "%s: UDMA speeds >UDMA33 cannot "
761 "be set\n", drive->name);
762 goto abort;
766 err = ide_raw_taskfile(drive, &tfargs, buf, args[3]);
768 args[0] = tf->status;
769 args[1] = tf->error;
770 args[2] = tf->nsect;
772 if (!err && xfer_rate) {
773 /* active-retuning-calls future */
774 ide_set_xfer_rate(drive, xfer_rate);
775 ide_driveid_update(drive);
777 abort:
778 if (copy_to_user((void __user *)arg, &args, 4))
779 err = -EFAULT;
780 if (buf) {
781 if (copy_to_user((void __user *)(arg + 4), buf, bufsize))
782 err = -EFAULT;
783 kfree(buf);
785 return err;
788 int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
790 void __user *p = (void __user *)arg;
791 int err = 0;
792 u8 args[7];
793 ide_task_t task;
795 if (copy_from_user(args, p, 7))
796 return -EFAULT;
798 memset(&task, 0, sizeof(task));
799 memcpy(&task.tf_array[7], &args[1], 6);
800 task.tf.command = args[0];
801 task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
803 err = ide_no_data_taskfile(drive, &task);
805 args[0] = task.tf.command;
806 memcpy(&args[1], &task.tf_array[7], 6);
808 if (copy_to_user(p, args, 7))
809 err = -EFAULT;
811 return err;