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/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>
22
23 #include <asm/uaccess.h>
24 #include <asm/io.h>
25
26 void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd)
27 {
28 ide_hwif_t *hwif = drive->hwif;
29 const struct ide_tp_ops *tp_ops = hwif->tp_ops;
30
31 /* Be sure we're looking at the low order bytes */
32 tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS);
33
34 tp_ops->tf_read(drive, &cmd->tf, cmd->valid.in.tf);
35
36 if (cmd->tf_flags & IDE_TFLAG_LBA48) {
37 tp_ops->write_devctl(hwif, ATA_HOB | ATA_DEVCTL_OBS);
38
39 tp_ops->tf_read(drive, &cmd->hob, cmd->valid.in.hob);
40 }
41 }
42
43 void ide_tf_dump(const char *s, struct ide_cmd *cmd)
44 {
45 #ifdef DEBUG
46 printk("%s: tf: feat 0x%02x nsect 0x%02x lbal 0x%02x "
47 "lbam 0x%02x lbah 0x%02x dev 0x%02x cmd 0x%02x\n",
48 s, cmd->tf.feature, cmd->tf.nsect,
49 cmd->tf.lbal, cmd->tf.lbam, cmd->tf.lbah,
50 cmd->tf.device, cmd->tf.command);
51 printk("%s: hob: nsect 0x%02x lbal 0x%02x lbam 0x%02x lbah 0x%02x\n",
52 s, cmd->hob.nsect, cmd->hob.lbal, cmd->hob.lbam, cmd->hob.lbah);
53 #endif
54 }
55
56 int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf)
57 {
58 struct ide_cmd cmd;
59
60 memset(&cmd, 0, sizeof(cmd));
61 cmd.tf.nsect = 0x01;
62 if (drive->media == ide_disk)
63 cmd.tf.command = ATA_CMD_ID_ATA;
64 else
65 cmd.tf.command = ATA_CMD_ID_ATAPI;
66 cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
67 cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
68 cmd.protocol = ATA_PROT_PIO;
69
70 return ide_raw_taskfile(drive, &cmd, buf, 1);
71 }
72
73 static ide_startstop_t task_no_data_intr(ide_drive_t *);
74 static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct ide_cmd *);
75 static ide_startstop_t task_pio_intr(ide_drive_t *);
76
77 ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *orig_cmd)
78 {
79 ide_hwif_t *hwif = drive->hwif;
80 struct ide_cmd *cmd = &hwif->cmd;
81 struct ide_taskfile *tf = &cmd->tf;
82 ide_handler_t *handler = NULL;
83 const struct ide_tp_ops *tp_ops = hwif->tp_ops;
84 const struct ide_dma_ops *dma_ops = hwif->dma_ops;
85
86 if (orig_cmd->protocol == ATA_PROT_PIO &&
87 (orig_cmd->tf_flags & IDE_TFLAG_MULTI_PIO) &&
88 drive->mult_count == 0) {
89 printk(KERN_ERR "%s: multimode not set!\n", drive->name);
90 return ide_stopped;
91 }
92
93 if (orig_cmd->ftf_flags & IDE_FTFLAG_FLAGGED)
94 orig_cmd->ftf_flags |= IDE_FTFLAG_SET_IN_FLAGS;
95
96 memcpy(cmd, orig_cmd, sizeof(*cmd));
97
98 if ((cmd->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) {
99 ide_tf_dump(drive->name, cmd);
100 tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS);
101
102 if (cmd->ftf_flags & IDE_FTFLAG_OUT_DATA) {
103 u8 data[2] = { cmd->tf.data, cmd->hob.data };
104
105 tp_ops->output_data(drive, cmd, data, 2);
106 }
107
108 if (cmd->valid.out.tf & IDE_VALID_DEVICE) {
109 u8 HIHI = (cmd->tf_flags & IDE_TFLAG_LBA48) ?
110 0xE0 : 0xEF;
111
112 if (!(cmd->ftf_flags & IDE_FTFLAG_FLAGGED))
113 cmd->tf.device &= HIHI;
114 cmd->tf.device |= drive->select;
115 }
116
117 tp_ops->tf_load(drive, &cmd->hob, cmd->valid.out.hob);
118 tp_ops->tf_load(drive, &cmd->tf, cmd->valid.out.tf);
119 }
120
121 switch (cmd->protocol) {
122 case ATA_PROT_PIO:
123 if (cmd->tf_flags & IDE_TFLAG_WRITE) {
124 tp_ops->exec_command(hwif, tf->command);
125 ndelay(400); /* FIXME */
126 return pre_task_out_intr(drive, cmd);
127 }
128 handler = task_pio_intr;
129 /* fall-through */
130 case ATA_PROT_NODATA:
131 if (handler == NULL)
132 handler = task_no_data_intr;
133 ide_execute_command(drive, cmd, handler, WAIT_WORSTCASE);
134 return ide_started;
135 case ATA_PROT_DMA:
136 if (ide_dma_prepare(drive, cmd))
137 return ide_stopped;
138 hwif->expiry = dma_ops->dma_timer_expiry;
139 ide_execute_command(drive, cmd, ide_dma_intr, 2 * WAIT_CMD);
140 dma_ops->dma_start(drive);
141 default:
142 return ide_started;
143 }
144 }
145 EXPORT_SYMBOL_GPL(do_rw_taskfile);
146
147 static ide_startstop_t task_no_data_intr(ide_drive_t *drive)
148 {
149 ide_hwif_t *hwif = drive->hwif;
150 struct ide_cmd *cmd = &hwif->cmd;
151 struct ide_taskfile *tf = &cmd->tf;
152 int custom = (cmd->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) ? 1 : 0;
153 int retries = (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) ? 5 : 1;
154 u8 stat;
155
156 local_irq_enable_in_hardirq();
157
158 while (1) {
159 stat = hwif->tp_ops->read_status(hwif);
160 if ((stat & ATA_BUSY) == 0 || retries-- == 0)
161 break;
162 udelay(10);
163 };
164
165 if (!OK_STAT(stat, ATA_DRDY, BAD_STAT)) {
166 if (custom && tf->command == ATA_CMD_SET_MULTI) {
167 drive->mult_req = drive->mult_count = 0;
168 drive->special_flags |= IDE_SFLAG_RECALIBRATE;
169 (void)ide_dump_status(drive, __func__, stat);
170 return ide_stopped;
171 } else if (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) {
172 if ((stat & (ATA_ERR | ATA_DRQ)) == 0) {
173 ide_set_handler(drive, &task_no_data_intr,
174 WAIT_WORSTCASE);
175 return ide_started;
176 }
177 }
178 return ide_error(drive, "task_no_data_intr", stat);
179 }
180
181 if (custom && tf->command == ATA_CMD_SET_MULTI)
182 drive->mult_count = drive->mult_req;
183
184 if (custom == 0 || tf->command == ATA_CMD_IDLEIMMEDIATE ||
185 tf->command == ATA_CMD_CHK_POWER) {
186 struct request *rq = hwif->rq;
187
188 if (blk_pm_request(rq))
189 ide_complete_pm_rq(drive, rq);
190 else
191 ide_finish_cmd(drive, cmd, stat);
192 }
193
194 return ide_stopped;
195 }
196
197 static u8 wait_drive_not_busy(ide_drive_t *drive)
198 {
199 ide_hwif_t *hwif = drive->hwif;
200 int retries;
201 u8 stat;
202
203 /*
204 * Last sector was transfered, wait until device is ready. This can
205 * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms.
206 */
207 for (retries = 0; retries < 1000; retries++) {
208 stat = hwif->tp_ops->read_status(hwif);
209
210 if (stat & ATA_BUSY)
211 udelay(10);
212 else
213 break;
214 }
215
216 if (stat & ATA_BUSY)
217 printk(KERN_ERR "%s: drive still BUSY!\n", drive->name);
218
219 return stat;
220 }
221
222 void ide_pio_bytes(ide_drive_t *drive, struct ide_cmd *cmd,
223 unsigned int write, unsigned int len)
224 {
225 ide_hwif_t *hwif = drive->hwif;
226 struct scatterlist *sg = hwif->sg_table;
227 struct scatterlist *cursg = cmd->cursg;
228 struct page *page;
229 unsigned long flags;
230 unsigned int offset;
231 u8 *buf;
232
233 cursg = cmd->cursg;
234 if (cursg == NULL)
235 cursg = cmd->cursg = sg;
236
237 while (len) {
238 unsigned nr_bytes = min(len, cursg->length - cmd->cursg_ofs);
239
240 if (nr_bytes > PAGE_SIZE)
241 nr_bytes = PAGE_SIZE;
242
243 page = sg_page(cursg);
244 offset = cursg->offset + cmd->cursg_ofs;
245
246 /* get the current page and offset */
247 page = nth_page(page, (offset >> PAGE_SHIFT));
248 offset %= PAGE_SIZE;
249
250 if (PageHighMem(page))
251 local_irq_save(flags);
252
253 buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset;
254
255 cmd->nleft -= nr_bytes;
256 cmd->cursg_ofs += nr_bytes;
257
258 if (cmd->cursg_ofs == cursg->length) {
259 cursg = cmd->cursg = sg_next(cmd->cursg);
260 cmd->cursg_ofs = 0;
261 }
262
263 /* do the actual data transfer */
264 if (write)
265 hwif->tp_ops->output_data(drive, cmd, buf, nr_bytes);
266 else
267 hwif->tp_ops->input_data(drive, cmd, buf, nr_bytes);
268
269 kunmap_atomic(buf, KM_BIO_SRC_IRQ);
270
271 if (PageHighMem(page))
272 local_irq_restore(flags);
273
274 len -= nr_bytes;
275 }
276 }
277 EXPORT_SYMBOL_GPL(ide_pio_bytes);
278
279 static void ide_pio_datablock(ide_drive_t *drive, struct ide_cmd *cmd,
280 unsigned int write)
281 {
282 unsigned int nr_bytes;
283
284 u8 saved_io_32bit = drive->io_32bit;
285
286 if (cmd->tf_flags & IDE_TFLAG_FS)
287 cmd->rq->errors = 0;
288
289 if (cmd->tf_flags & IDE_TFLAG_IO_16BIT)
290 drive->io_32bit = 0;
291
292 touch_softlockup_watchdog();
293
294 if (cmd->tf_flags & IDE_TFLAG_MULTI_PIO)
295 nr_bytes = min_t(unsigned, cmd->nleft, drive->mult_count << 9);
296 else
297 nr_bytes = SECTOR_SIZE;
298
299 ide_pio_bytes(drive, cmd, write, nr_bytes);
300
301 drive->io_32bit = saved_io_32bit;
302 }
303
304 static void ide_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd)
305 {
306 if (cmd->tf_flags & IDE_TFLAG_FS) {
307 int nr_bytes = cmd->nbytes - cmd->nleft;
308
309 if (cmd->protocol == ATA_PROT_PIO &&
310 ((cmd->tf_flags & IDE_TFLAG_WRITE) || cmd->nleft == 0)) {
311 if (cmd->tf_flags & IDE_TFLAG_MULTI_PIO)
312 nr_bytes -= drive->mult_count << 9;
313 else
314 nr_bytes -= SECTOR_SIZE;
315 }
316
317 if (nr_bytes > 0)
318 ide_complete_rq(drive, 0, nr_bytes);
319 }
320 }
321
322 void ide_finish_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 stat)
323 {
324 struct request *rq = drive->hwif->rq;
325 u8 err = ide_read_error(drive);
326
327 ide_complete_cmd(drive, cmd, stat, err);
328 rq->errors = err;
329 ide_complete_rq(drive, err ? -EIO : 0, blk_rq_bytes(rq));
330 }
331
332 /*
333 * Handler for command with PIO data phase.
334 */
335 static ide_startstop_t task_pio_intr(ide_drive_t *drive)
336 {
337 ide_hwif_t *hwif = drive->hwif;
338 struct ide_cmd *cmd = &drive->hwif->cmd;
339 u8 stat = hwif->tp_ops->read_status(hwif);
340 u8 write = !!(cmd->tf_flags & IDE_TFLAG_WRITE);
341
342 if (write == 0) {
343 /* Error? */
344 if (stat & ATA_ERR)
345 goto out_err;
346
347 /* Didn't want any data? Odd. */
348 if ((stat & ATA_DRQ) == 0) {
349 /* Command all done? */
350 if (OK_STAT(stat, ATA_DRDY, ATA_BUSY))
351 goto out_end;
352
353 /* Assume it was a spurious irq */
354 goto out_wait;
355 }
356 } else {
357 if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat))
358 goto out_err;
359
360 /* Deal with unexpected ATA data phase. */
361 if (((stat & ATA_DRQ) == 0) ^ (cmd->nleft == 0))
362 goto out_err;
363 }
364
365 if (write && cmd->nleft == 0)
366 goto out_end;
367
368 /* Still data left to transfer. */
369 ide_pio_datablock(drive, cmd, write);
370
371 /* Are we done? Check status and finish transfer. */
372 if (write == 0 && cmd->nleft == 0) {
373 stat = wait_drive_not_busy(drive);
374 if (!OK_STAT(stat, 0, BAD_STAT))
375 goto out_err;
376
377 goto out_end;
378 }
379 out_wait:
380 /* Still data left to transfer. */
381 ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE);
382 return ide_started;
383 out_end:
384 if ((cmd->tf_flags & IDE_TFLAG_FS) == 0)
385 ide_finish_cmd(drive, cmd, stat);
386 else
387 ide_complete_rq(drive, 0, blk_rq_sectors(cmd->rq) << 9);
388 return ide_stopped;
389 out_err:
390 ide_error_cmd(drive, cmd);
391 return ide_error(drive, __func__, stat);
392 }
393
394 static ide_startstop_t pre_task_out_intr(ide_drive_t *drive,
395 struct ide_cmd *cmd)
396 {
397 ide_startstop_t startstop;
398
399 if (ide_wait_stat(&startstop, drive, ATA_DRQ,
400 drive->bad_wstat, WAIT_DRQ)) {
401 printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n",
402 drive->name,
403 (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) ? "MULT" : "",
404 (drive->dev_flags & IDE_DFLAG_LBA48) ? "_EXT" : "");
405 return startstop;
406 }
407
408 if ((drive->dev_flags & IDE_DFLAG_UNMASK) == 0)
409 local_irq_disable();
410
411 ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE);
412
413 ide_pio_datablock(drive, cmd, 1);
414
415 return ide_started;
416 }
417
418 int ide_raw_taskfile(ide_drive_t *drive, struct ide_cmd *cmd, u8 *buf,
419 u16 nsect)
420 {
421 struct request *rq;
422 int error;
423
424 rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
425 rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
426
427 if (cmd->tf_flags & IDE_TFLAG_WRITE)
428 rq->cmd_flags |= REQ_RW;
429
430 /*
431 * (ks) We transfer currently only whole sectors.
432 * This is suffient for now. But, it would be great,
433 * if we would find a solution to transfer any size.
434 * To support special commands like READ LONG.
435 */
436 if (nsect) {
437 error = blk_rq_map_kern(drive->queue, rq, buf,
438 nsect * SECTOR_SIZE, __GFP_WAIT);
439 if (error)
440 goto put_req;
441 }
442
443 rq->special = cmd;
444 cmd->rq = rq;
445
446 error = blk_execute_rq(drive->queue, NULL, rq, 0);
447
448 put_req:
449 blk_put_request(rq);
450 return error;
451 }
452
453 EXPORT_SYMBOL(ide_raw_taskfile);
454
455 int ide_no_data_taskfile(ide_drive_t *drive, struct ide_cmd *cmd)
456 {
457 cmd->protocol = ATA_PROT_NODATA;
458
459 return ide_raw_taskfile(drive, cmd, NULL, 0);
460 }
461 EXPORT_SYMBOL_GPL(ide_no_data_taskfile);
462
463 #ifdef CONFIG_IDE_TASK_IOCTL
464 int ide_taskfile_ioctl(ide_drive_t *drive, unsigned long arg)
465 {
466 ide_task_request_t *req_task;
467 struct ide_cmd cmd;
468 u8 *outbuf = NULL;
469 u8 *inbuf = NULL;
470 u8 *data_buf = NULL;
471 int err = 0;
472 int tasksize = sizeof(struct ide_task_request_s);
473 unsigned int taskin = 0;
474 unsigned int taskout = 0;
475 u16 nsect = 0;
476 char __user *buf = (char __user *)arg;
477
478 // printk("IDE Taskfile ...\n");
479
480 req_task = kzalloc(tasksize, GFP_KERNEL);
481 if (req_task == NULL) return -ENOMEM;
482 if (copy_from_user(req_task, buf, tasksize)) {
483 kfree(req_task);
484 return -EFAULT;
485 }
486
487 taskout = req_task->out_size;
488 taskin = req_task->in_size;
489
490 if (taskin > 65536 || taskout > 65536) {
491 err = -EINVAL;
492 goto abort;
493 }
494
495 if (taskout) {
496 int outtotal = tasksize;
497 outbuf = kzalloc(taskout, GFP_KERNEL);
498 if (outbuf == NULL) {
499 err = -ENOMEM;
500 goto abort;
501 }
502 if (copy_from_user(outbuf, buf + outtotal, taskout)) {
503 err = -EFAULT;
504 goto abort;
505 }
506 }
507
508 if (taskin) {
509 int intotal = tasksize + taskout;
510 inbuf = kzalloc(taskin, GFP_KERNEL);
511 if (inbuf == NULL) {
512 err = -ENOMEM;
513 goto abort;
514 }
515 if (copy_from_user(inbuf, buf + intotal, taskin)) {
516 err = -EFAULT;
517 goto abort;
518 }
519 }
520
521 memset(&cmd, 0, sizeof(cmd));
522
523 memcpy(&cmd.hob, req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2);
524 memcpy(&cmd.tf, req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE);
525
526 cmd.valid.out.tf = IDE_VALID_DEVICE;
527 cmd.valid.in.tf = IDE_VALID_DEVICE | IDE_VALID_IN_TF;
528 cmd.tf_flags = IDE_TFLAG_IO_16BIT;
529
530 if (drive->dev_flags & IDE_DFLAG_LBA48) {
531 cmd.tf_flags |= IDE_TFLAG_LBA48;
532 cmd.valid.in.hob = IDE_VALID_IN_HOB;
533 }
534
535 if (req_task->out_flags.all) {
536 cmd.ftf_flags |= IDE_FTFLAG_FLAGGED;
537
538 if (req_task->out_flags.b.data)
539 cmd.ftf_flags |= IDE_FTFLAG_OUT_DATA;
540
541 if (req_task->out_flags.b.nsector_hob)
542 cmd.valid.out.hob |= IDE_VALID_NSECT;
543 if (req_task->out_flags.b.sector_hob)
544 cmd.valid.out.hob |= IDE_VALID_LBAL;
545 if (req_task->out_flags.b.lcyl_hob)
546 cmd.valid.out.hob |= IDE_VALID_LBAM;
547 if (req_task->out_flags.b.hcyl_hob)
548 cmd.valid.out.hob |= IDE_VALID_LBAH;
549
550 if (req_task->out_flags.b.error_feature)
551 cmd.valid.out.tf |= IDE_VALID_FEATURE;
552 if (req_task->out_flags.b.nsector)
553 cmd.valid.out.tf |= IDE_VALID_NSECT;
554 if (req_task->out_flags.b.sector)
555 cmd.valid.out.tf |= IDE_VALID_LBAL;
556 if (req_task->out_flags.b.lcyl)
557 cmd.valid.out.tf |= IDE_VALID_LBAM;
558 if (req_task->out_flags.b.hcyl)
559 cmd.valid.out.tf |= IDE_VALID_LBAH;
560 } else {
561 cmd.valid.out.tf |= IDE_VALID_OUT_TF;
562 if (cmd.tf_flags & IDE_TFLAG_LBA48)
563 cmd.valid.out.hob |= IDE_VALID_OUT_HOB;
564 }
565
566 if (req_task->in_flags.b.data)
567 cmd.ftf_flags |= IDE_FTFLAG_IN_DATA;
568
569 if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) {
570 /* fixup data phase if needed */
571 if (req_task->data_phase == TASKFILE_IN_DMAQ ||
572 req_task->data_phase == TASKFILE_IN_DMA)
573 cmd.tf_flags |= IDE_TFLAG_WRITE;
574 }
575
576 cmd.protocol = ATA_PROT_DMA;
577
578 switch (req_task->data_phase) {
579 case TASKFILE_MULTI_OUT:
580 if (!drive->mult_count) {
581 /* (hs): give up if multcount is not set */
582 printk(KERN_ERR "%s: %s Multimode Write " \
583 "multcount is not set\n",
584 drive->name, __func__);
585 err = -EPERM;
586 goto abort;
587 }
588 cmd.tf_flags |= IDE_TFLAG_MULTI_PIO;
589 /* fall through */
590 case TASKFILE_OUT:
591 cmd.protocol = ATA_PROT_PIO;
592 /* fall through */
593 case TASKFILE_OUT_DMAQ:
594 case TASKFILE_OUT_DMA:
595 cmd.tf_flags |= IDE_TFLAG_WRITE;
596 nsect = taskout / SECTOR_SIZE;
597 data_buf = outbuf;
598 break;
599 case TASKFILE_MULTI_IN:
600 if (!drive->mult_count) {
601 /* (hs): give up if multcount is not set */
602 printk(KERN_ERR "%s: %s Multimode Read failure " \
603 "multcount is not set\n",
604 drive->name, __func__);
605 err = -EPERM;
606 goto abort;
607 }
608 cmd.tf_flags |= IDE_TFLAG_MULTI_PIO;
609 /* fall through */
610 case TASKFILE_IN:
611 cmd.protocol = ATA_PROT_PIO;
612 /* fall through */
613 case TASKFILE_IN_DMAQ:
614 case TASKFILE_IN_DMA:
615 nsect = taskin / SECTOR_SIZE;
616 data_buf = inbuf;
617 break;
618 case TASKFILE_NO_DATA:
619 cmd.protocol = ATA_PROT_NODATA;
620 break;
621 default:
622 err = -EFAULT;
623 goto abort;
624 }
625
626 if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA)
627 nsect = 0;
628 else if (!nsect) {
629 nsect = (cmd.hob.nsect << 8) | cmd.tf.nsect;
630
631 if (!nsect) {
632 printk(KERN_ERR "%s: in/out command without data\n",
633 drive->name);
634 err = -EFAULT;
635 goto abort;
636 }
637 }
638
639 err = ide_raw_taskfile(drive, &cmd, data_buf, nsect);
640
641 memcpy(req_task->hob_ports, &cmd.hob, HDIO_DRIVE_HOB_HDR_SIZE - 2);
642 memcpy(req_task->io_ports, &cmd.tf, HDIO_DRIVE_TASK_HDR_SIZE);
643
644 if ((cmd.ftf_flags & IDE_FTFLAG_SET_IN_FLAGS) &&
645 req_task->in_flags.all == 0) {
646 req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS;
647 if (drive->dev_flags & IDE_DFLAG_LBA48)
648 req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8);
649 }
650
651 if (copy_to_user(buf, req_task, tasksize)) {
652 err = -EFAULT;
653 goto abort;
654 }
655 if (taskout) {
656 int outtotal = tasksize;
657 if (copy_to_user(buf + outtotal, outbuf, taskout)) {
658 err = -EFAULT;
659 goto abort;
660 }
661 }
662 if (taskin) {
663 int intotal = tasksize + taskout;
664 if (copy_to_user(buf + intotal, inbuf, taskin)) {
665 err = -EFAULT;
666 goto abort;
667 }
668 }
669 abort:
670 kfree(req_task);
671 kfree(outbuf);
672 kfree(inbuf);
673
674 // printk("IDE Taskfile ioctl ended. rc = %i\n", err);
675
676 return err;
677 }
678 #endif
679
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