?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
USB: musb_hdrc: another davinci buildfix (otg related)
[linux-2.6.git] / drivers / ide / ide-taskfile.c
blob16138bce84a794c88c027029c8a321ba63191067
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_dump(const char *s, struct ide_taskfile *tf)
27 {
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
38 }
39
40 int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf)
41 {
42 ide_task_t args;
43
44 memset(&args, 0, sizeof(ide_task_t));
45 args.tf.nsect = 0x01;
46 if (drive->media == ide_disk)
47 args.tf.command = ATA_CMD_ID_ATA;
48 else
49 args.tf.command = ATA_CMD_ID_ATAPI;
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);
53 }
54
55 static ide_startstop_t task_no_data_intr(ide_drive_t *);
56 static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *);
57 static ide_startstop_t task_in_intr(ide_drive_t *);
58
59 ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task)
60 {
61 ide_hwif_t *hwif = drive->hwif;
62 struct ide_taskfile *tf = &task->tf;
63 ide_handler_t *handler = NULL;
64 const struct ide_tp_ops *tp_ops = hwif->tp_ops;
65 const struct ide_dma_ops *dma_ops = hwif->dma_ops;
66
67 if (task->data_phase == TASKFILE_MULTI_IN ||
68 task->data_phase == TASKFILE_MULTI_OUT) {
69 if (!drive->mult_count) {
70 printk(KERN_ERR "%s: multimode not set!\n",
71 drive->name);
72 return ide_stopped;
73 }
74 }
75
76 if (task->tf_flags & IDE_TFLAG_FLAGGED)
77 task->tf_flags |= IDE_TFLAG_FLAGGED_SET_IN_FLAGS;
78
79 memcpy(&hwif->task, task, sizeof(*task));
80
81 if ((task->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) {
82 ide_tf_dump(drive->name, tf);
83 tp_ops->set_irq(hwif, 1);
84 SELECT_MASK(drive, 0);
85 tp_ops->tf_load(drive, task);
86 }
87
88 switch (task->data_phase) {
89 case TASKFILE_MULTI_OUT:
90 case TASKFILE_OUT:
91 tp_ops->exec_command(hwif, tf->command);
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 ide_execute_command(drive, tf->command, handler,
102 WAIT_WORSTCASE, NULL);
103 return ide_started;
104 default:
105 if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0 ||
106 dma_ops->dma_setup(drive))
107 return ide_stopped;
108 dma_ops->dma_exec_cmd(drive, tf->command);
109 dma_ops->dma_start(drive);
110 return ide_started;
111 }
112 }
113 EXPORT_SYMBOL_GPL(do_rw_taskfile);
114
115 /*
116 * Handler for commands without a data phase
117 */
118 static ide_startstop_t task_no_data_intr(ide_drive_t *drive)
119 {
120 ide_hwif_t *hwif = drive->hwif;
121 ide_task_t *task = &hwif->task;
122 struct ide_taskfile *tf = &task->tf;
123 int custom = (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) ? 1 : 0;
124 int retries = (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) ? 5 : 1;
125 u8 stat;
126
127 local_irq_enable_in_hardirq();
128
129 while (1) {
130 stat = hwif->tp_ops->read_status(hwif);
131 if ((stat & ATA_BUSY) == 0 || retries-- == 0)
132 break;
133 udelay(10);
134 };
135
136 if (!OK_STAT(stat, ATA_DRDY, BAD_STAT)) {
137 if (custom && tf->command == ATA_CMD_SET_MULTI) {
138 drive->mult_req = drive->mult_count = 0;
139 drive->special.b.recalibrate = 1;
140 (void)ide_dump_status(drive, __func__, stat);
141 return ide_stopped;
142 } else if (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) {
143 if ((stat & (ATA_ERR | ATA_DRQ)) == 0) {
144 ide_set_handler(drive, &task_no_data_intr,
145 WAIT_WORSTCASE, NULL);
146 return ide_started;
147 }
148 }
149 return ide_error(drive, "task_no_data_intr", stat);
150 /* calls ide_end_drive_cmd */
151 }
152
153 if (!custom)
154 ide_end_drive_cmd(drive, stat, ide_read_error(drive));
155 else if (tf->command == ATA_CMD_IDLEIMMEDIATE) {
156 hwif->tp_ops->tf_read(drive, task);
157 if (tf->lbal != 0xc4) {
158 printk(KERN_ERR "%s: head unload failed!\n",
159 drive->name);
160 ide_tf_dump(drive->name, tf);
161 } else
162 drive->dev_flags |= IDE_DFLAG_PARKED;
163 ide_end_drive_cmd(drive, stat, ide_read_error(drive));
164 } else if (tf->command == ATA_CMD_SET_MULTI)
165 drive->mult_count = drive->mult_req;
166
167 return ide_stopped;
168 }
169
170 static u8 wait_drive_not_busy(ide_drive_t *drive)
171 {
172 ide_hwif_t *hwif = drive->hwif;
173 int retries;
174 u8 stat;
175
176 /*
177 * Last sector was transfered, wait until device is ready. This can
178 * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms.
179 */
180 for (retries = 0; retries < 1000; retries++) {
181 stat = hwif->tp_ops->read_status(hwif);
182
183 if (stat & ATA_BUSY)
184 udelay(10);
185 else
186 break;
187 }
188
189 if (stat & ATA_BUSY)
190 printk(KERN_ERR "%s: drive still BUSY!\n", drive->name);
191
192 return stat;
193 }
194
195 static void ide_pio_sector(ide_drive_t *drive, struct request *rq,
196 unsigned int write)
197 {
198 ide_hwif_t *hwif = drive->hwif;
199 struct scatterlist *sg = hwif->sg_table;
200 struct scatterlist *cursg = hwif->cursg;
201 struct page *page;
202 #ifdef CONFIG_HIGHMEM
203 unsigned long flags;
204 #endif
205 unsigned int offset;
206 u8 *buf;
207
208 cursg = hwif->cursg;
209 if (!cursg) {
210 cursg = sg;
211 hwif->cursg = sg;
212 }
213
214 page = sg_page(cursg);
215 offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE;
216
217 /* get the current page and offset */
218 page = nth_page(page, (offset >> PAGE_SHIFT));
219 offset %= PAGE_SIZE;
220
221 #ifdef CONFIG_HIGHMEM
222 local_irq_save(flags);
223 #endif
224 buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset;
225
226 hwif->nleft--;
227 hwif->cursg_ofs++;
228
229 if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) {
230 hwif->cursg = sg_next(hwif->cursg);
231 hwif->cursg_ofs = 0;
232 }
233
234 /* do the actual data transfer */
235 if (write)
236 hwif->tp_ops->output_data(drive, rq, buf, SECTOR_SIZE);
237 else
238 hwif->tp_ops->input_data(drive, rq, buf, SECTOR_SIZE);
239
240 kunmap_atomic(buf, KM_BIO_SRC_IRQ);
241 #ifdef CONFIG_HIGHMEM
242 local_irq_restore(flags);
243 #endif
244 }
245
246 static void ide_pio_multi(ide_drive_t *drive, struct request *rq,
247 unsigned int write)
248 {
249 unsigned int nsect;
250
251 nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count);
252 while (nsect--)
253 ide_pio_sector(drive, rq, write);
254 }
255
256 static void ide_pio_datablock(ide_drive_t *drive, struct request *rq,
257 unsigned int write)
258 {
259 u8 saved_io_32bit = drive->io_32bit;
260
261 if (rq->bio) /* fs request */
262 rq->errors = 0;
263
264 if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
265 ide_task_t *task = rq->special;
266
267 if (task->tf_flags & IDE_TFLAG_IO_16BIT)
268 drive->io_32bit = 0;
269 }
270
271 touch_softlockup_watchdog();
272
273 switch (drive->hwif->data_phase) {
274 case TASKFILE_MULTI_IN:
275 case TASKFILE_MULTI_OUT:
276 ide_pio_multi(drive, rq, write);
277 break;
278 default:
279 ide_pio_sector(drive, rq, write);
280 break;
281 }
282
283 drive->io_32bit = saved_io_32bit;
284 }
285
286 static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq,
287 const char *s, u8 stat)
288 {
289 if (rq->bio) {
290 ide_hwif_t *hwif = drive->hwif;
291 int sectors = hwif->nsect - hwif->nleft;
292
293 switch (hwif->data_phase) {
294 case TASKFILE_IN:
295 if (hwif->nleft)
296 break;
297 /* fall through */
298 case TASKFILE_OUT:
299 sectors--;
300 break;
301 case TASKFILE_MULTI_IN:
302 if (hwif->nleft)
303 break;
304 /* fall through */
305 case TASKFILE_MULTI_OUT:
306 sectors -= drive->mult_count;
307 default:
308 break;
309 }
310
311 if (sectors > 0) {
312 struct ide_driver *drv;
313
314 drv = *(struct ide_driver **)rq->rq_disk->private_data;
315 drv->end_request(drive, 1, sectors);
316 }
317 }
318 return ide_error(drive, s, stat);
319 }
320
321 void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat)
322 {
323 if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
324 u8 err = ide_read_error(drive);
325
326 ide_end_drive_cmd(drive, stat, err);
327 return;
328 }
329
330 if (rq->rq_disk) {
331 struct ide_driver *drv;
332
333 drv = *(struct ide_driver **)rq->rq_disk->private_data;;
334 drv->end_request(drive, 1, rq->nr_sectors);
335 } else
336 ide_end_request(drive, 1, rq->nr_sectors);
337 }
338
339 /*
340 * We got an interrupt on a task_in case, but no errors and no DRQ.
341 *
342 * It might be a spurious irq (shared irq), but it might be a
343 * command that had no output.
344 */
345 static ide_startstop_t task_in_unexpected(ide_drive_t *drive, struct request *rq, u8 stat)
346 {
347 /* Command all done? */
348 if (OK_STAT(stat, ATA_DRDY, ATA_BUSY)) {
349 task_end_request(drive, rq, stat);
350 return ide_stopped;
351 }
352
353 /* Assume it was a spurious irq */
354 ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
355 return ide_started;
356 }
357
358 /*
359 * Handler for command with PIO data-in phase (Read/Read Multiple).
360 */
361 static ide_startstop_t task_in_intr(ide_drive_t *drive)
362 {
363 ide_hwif_t *hwif = drive->hwif;
364 struct request *rq = hwif->rq;
365 u8 stat = hwif->tp_ops->read_status(hwif);
366
367 /* Error? */
368 if (stat & ATA_ERR)
369 return task_error(drive, rq, __func__, stat);
370
371 /* Didn't want any data? Odd. */
372 if ((stat & ATA_DRQ) == 0)
373 return task_in_unexpected(drive, rq, stat);
374
375 ide_pio_datablock(drive, rq, 0);
376
377 /* Are we done? Check status and finish transfer. */
378 if (!hwif->nleft) {
379 stat = wait_drive_not_busy(drive);
380 if (!OK_STAT(stat, 0, BAD_STAT))
381 return task_error(drive, rq, __func__, stat);
382 task_end_request(drive, rq, stat);
383 return ide_stopped;
384 }
385
386 /* Still data left to transfer. */
387 ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
388
389 return ide_started;
390 }
391
392 /*
393 * Handler for command with PIO data-out phase (Write/Write Multiple).
394 */
395 static ide_startstop_t task_out_intr (ide_drive_t *drive)
396 {
397 ide_hwif_t *hwif = drive->hwif;
398 struct request *rq = hwif->rq;
399 u8 stat = hwif->tp_ops->read_status(hwif);
400
401 if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat))
402 return task_error(drive, rq, __func__, stat);
403
404 /* Deal with unexpected ATA data phase. */
405 if (((stat & ATA_DRQ) == 0) ^ !hwif->nleft)
406 return task_error(drive, rq, __func__, stat);
407
408 if (!hwif->nleft) {
409 task_end_request(drive, rq, stat);
410 return ide_stopped;
411 }
412
413 /* Still data left to transfer. */
414 ide_pio_datablock(drive, rq, 1);
415 ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
416
417 return ide_started;
418 }
419
420 static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq)
421 {
422 ide_startstop_t startstop;
423
424 if (ide_wait_stat(&startstop, drive, ATA_DRQ,
425 drive->bad_wstat, WAIT_DRQ)) {
426 printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n",
427 drive->name, drive->hwif->data_phase ? "MULT" : "",
428 (drive->dev_flags & IDE_DFLAG_LBA48) ? "_EXT" : "");
429 return startstop;
430 }
431
432 if ((drive->dev_flags & IDE_DFLAG_UNMASK) == 0)
433 local_irq_disable();
434
435 ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
436 ide_pio_datablock(drive, rq, 1);
437
438 return ide_started;
439 }
440
441 int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect)
442 {
443 struct request *rq;
444 int error;
445
446 rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
447 rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
448 rq->buffer = buf;
449
450 /*
451 * (ks) We transfer currently only whole sectors.
452 * This is suffient for now. But, it would be great,
453 * if we would find a solution to transfer any size.
454 * To support special commands like READ LONG.
455 */
456 rq->hard_nr_sectors = rq->nr_sectors = nsect;
457 rq->hard_cur_sectors = rq->current_nr_sectors = nsect;
458
459 if (task->tf_flags & IDE_TFLAG_WRITE)
460 rq->cmd_flags |= REQ_RW;
461
462 rq->special = task;
463 task->rq = rq;
464
465 error = blk_execute_rq(drive->queue, NULL, rq, 0);
466 blk_put_request(rq);
467
468 return error;
469 }
470
471 EXPORT_SYMBOL(ide_raw_taskfile);
472
473 int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task)
474 {
475 task->data_phase = TASKFILE_NO_DATA;
476
477 return ide_raw_taskfile(drive, task, NULL, 0);
478 }
479 EXPORT_SYMBOL_GPL(ide_no_data_taskfile);
480
481 #ifdef CONFIG_IDE_TASK_IOCTL
482 int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
483 {
484 ide_task_request_t *req_task;
485 ide_task_t args;
486 u8 *outbuf = NULL;
487 u8 *inbuf = NULL;
488 u8 *data_buf = NULL;
489 int err = 0;
490 int tasksize = sizeof(struct ide_task_request_s);
491 unsigned int taskin = 0;
492 unsigned int taskout = 0;
493 u16 nsect = 0;
494 char __user *buf = (char __user *)arg;
495
496 // printk("IDE Taskfile ...\n");
497
498 req_task = kzalloc(tasksize, GFP_KERNEL);
499 if (req_task == NULL) return -ENOMEM;
500 if (copy_from_user(req_task, buf, tasksize)) {
501 kfree(req_task);
502 return -EFAULT;
503 }
504
505 taskout = req_task->out_size;
506 taskin = req_task->in_size;
507
508 if (taskin > 65536 || taskout > 65536) {
509 err = -EINVAL;
510 goto abort;
511 }
512
513 if (taskout) {
514 int outtotal = tasksize;
515 outbuf = kzalloc(taskout, GFP_KERNEL);
516 if (outbuf == NULL) {
517 err = -ENOMEM;
518 goto abort;
519 }
520 if (copy_from_user(outbuf, buf + outtotal, taskout)) {
521 err = -EFAULT;
522 goto abort;
523 }
524 }
525
526 if (taskin) {
527 int intotal = tasksize + taskout;
528 inbuf = kzalloc(taskin, GFP_KERNEL);
529 if (inbuf == NULL) {
530 err = -ENOMEM;
531 goto abort;
532 }
533 if (copy_from_user(inbuf, buf + intotal, taskin)) {
534 err = -EFAULT;
535 goto abort;
536 }
537 }
538
539 memset(&args, 0, sizeof(ide_task_t));
540
541 memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2);
542 memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE);
543
544 args.data_phase = req_task->data_phase;
545
546 args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE |
547 IDE_TFLAG_IN_TF;
548 if (drive->dev_flags & IDE_DFLAG_LBA48)
549 args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB);
550
551 if (req_task->out_flags.all) {
552 args.tf_flags |= IDE_TFLAG_FLAGGED;
553
554 if (req_task->out_flags.b.data)
555 args.tf_flags |= IDE_TFLAG_OUT_DATA;
556
557 if (req_task->out_flags.b.nsector_hob)
558 args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT;
559 if (req_task->out_flags.b.sector_hob)
560 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL;
561 if (req_task->out_flags.b.lcyl_hob)
562 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM;
563 if (req_task->out_flags.b.hcyl_hob)
564 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH;
565
566 if (req_task->out_flags.b.error_feature)
567 args.tf_flags |= IDE_TFLAG_OUT_FEATURE;
568 if (req_task->out_flags.b.nsector)
569 args.tf_flags |= IDE_TFLAG_OUT_NSECT;
570 if (req_task->out_flags.b.sector)
571 args.tf_flags |= IDE_TFLAG_OUT_LBAL;
572 if (req_task->out_flags.b.lcyl)
573 args.tf_flags |= IDE_TFLAG_OUT_LBAM;
574 if (req_task->out_flags.b.hcyl)
575 args.tf_flags |= IDE_TFLAG_OUT_LBAH;
576 } else {
577 args.tf_flags |= IDE_TFLAG_OUT_TF;
578 if (args.tf_flags & IDE_TFLAG_LBA48)
579 args.tf_flags |= IDE_TFLAG_OUT_HOB;
580 }
581
582 if (req_task->in_flags.b.data)
583 args.tf_flags |= IDE_TFLAG_IN_DATA;
584
585 switch(req_task->data_phase) {
586 case TASKFILE_MULTI_OUT:
587 if (!drive->mult_count) {
588 /* (hs): give up if multcount is not set */
589 printk(KERN_ERR "%s: %s Multimode Write " \
590 "multcount is not set\n",
591 drive->name, __func__);
592 err = -EPERM;
593 goto abort;
594 }
595 /* fall through */
596 case TASKFILE_OUT:
597 /* fall through */
598 case TASKFILE_OUT_DMAQ:
599 case TASKFILE_OUT_DMA:
600 nsect = taskout / SECTOR_SIZE;
601 data_buf = outbuf;
602 break;
603 case TASKFILE_MULTI_IN:
604 if (!drive->mult_count) {
605 /* (hs): give up if multcount is not set */
606 printk(KERN_ERR "%s: %s Multimode Read failure " \
607 "multcount is not set\n",
608 drive->name, __func__);
609 err = -EPERM;
610 goto abort;
611 }
612 /* fall through */
613 case TASKFILE_IN:
614 /* fall through */
615 case TASKFILE_IN_DMAQ:
616 case TASKFILE_IN_DMA:
617 nsect = taskin / SECTOR_SIZE;
618 data_buf = inbuf;
619 break;
620 case TASKFILE_NO_DATA:
621 break;
622 default:
623 err = -EFAULT;
624 goto abort;
625 }
626
627 if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA)
628 nsect = 0;
629 else if (!nsect) {
630 nsect = (args.tf.hob_nsect << 8) | args.tf.nsect;
631
632 if (!nsect) {
633 printk(KERN_ERR "%s: in/out command without data\n",
634 drive->name);
635 err = -EFAULT;
636 goto abort;
637 }
638 }
639
640 if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE)
641 args.tf_flags |= IDE_TFLAG_WRITE;
642
643 err = ide_raw_taskfile(drive, &args, data_buf, nsect);
644
645 memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2);
646 memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE);
647
648 if ((args.tf_flags & IDE_TFLAG_FLAGGED_SET_IN_FLAGS) &&
649 req_task->in_flags.all == 0) {
650 req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS;
651 if (drive->dev_flags & IDE_DFLAG_LBA48)
652 req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8);
653 }
654
655 if (copy_to_user(buf, req_task, tasksize)) {
656 err = -EFAULT;
657 goto abort;
658 }
659 if (taskout) {
660 int outtotal = tasksize;
661 if (copy_to_user(buf + outtotal, outbuf, taskout)) {
662 err = -EFAULT;
663 goto abort;
664 }
665 }
666 if (taskin) {
667 int intotal = tasksize + taskout;
668 if (copy_to_user(buf + intotal, inbuf, taskin)) {
669 err = -EFAULT;
670 goto abort;
671 }
672 }
673 abort:
674 kfree(req_task);
675 kfree(outbuf);
676 kfree(inbuf);
677
678 // printk("IDE Taskfile ioctl ended. rc = %i\n", err);
679
680 return err;
681 }
682 #endif
Linus' kernel tree