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qd65xx: always use ->selectproc method
[linux-2.6/x86.git] / drivers / ide / ide-taskfile.c
blob155cc904f4eb056948745060c3e704d6a7698d29
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_taskfile *tf = &task->tf;
40 u8 HIHI = (task->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;
41
42 if (task->tf_flags & IDE_TFLAG_FLAGGED)
43 HIHI = 0xFF;
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 drive->name, tf->feature, tf->nsect, tf->lbal,
49 tf->lbam, tf->lbah, tf->device, tf->command);
50 printk("%s: hob: nsect 0x%02x lbal 0x%02x "
51 "lbam 0x%02x lbah 0x%02x\n",
52 drive->name, tf->hob_nsect, tf->hob_lbal,
53 tf->hob_lbam, tf->hob_lbah);
54 #endif
55
56 ide_set_irq(drive, 1);
57
58 if ((task->tf_flags & IDE_TFLAG_NO_SELECT_MASK) == 0)
59 SELECT_MASK(drive, 0);
60
61 if (task->tf_flags & IDE_TFLAG_OUT_DATA)
62 hwif->OUTW((tf->hob_data << 8) | tf->data,
63 hwif->io_ports[IDE_DATA_OFFSET]);
64
65 if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
66 hwif->OUTB(tf->hob_feature, hwif->io_ports[IDE_FEATURE_OFFSET]);
67 if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
68 hwif->OUTB(tf->hob_nsect, hwif->io_ports[IDE_NSECTOR_OFFSET]);
69 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
70 hwif->OUTB(tf->hob_lbal, hwif->io_ports[IDE_SECTOR_OFFSET]);
71 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
72 hwif->OUTB(tf->hob_lbam, hwif->io_ports[IDE_LCYL_OFFSET]);
73 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
74 hwif->OUTB(tf->hob_lbah, hwif->io_ports[IDE_HCYL_OFFSET]);
75
76 if (task->tf_flags & IDE_TFLAG_OUT_FEATURE)
77 hwif->OUTB(tf->feature, hwif->io_ports[IDE_FEATURE_OFFSET]);
78 if (task->tf_flags & IDE_TFLAG_OUT_NSECT)
79 hwif->OUTB(tf->nsect, hwif->io_ports[IDE_NSECTOR_OFFSET]);
80 if (task->tf_flags & IDE_TFLAG_OUT_LBAL)
81 hwif->OUTB(tf->lbal, hwif->io_ports[IDE_SECTOR_OFFSET]);
82 if (task->tf_flags & IDE_TFLAG_OUT_LBAM)
83 hwif->OUTB(tf->lbam, hwif->io_ports[IDE_LCYL_OFFSET]);
84 if (task->tf_flags & IDE_TFLAG_OUT_LBAH)
85 hwif->OUTB(tf->lbah, hwif->io_ports[IDE_HCYL_OFFSET]);
86
87 if (task->tf_flags & IDE_TFLAG_OUT_DEVICE)
88 hwif->OUTB((tf->device & HIHI) | drive->select.all,
89 hwif->io_ports[IDE_SELECT_OFFSET]);
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
139 if (task->data_phase == TASKFILE_MULTI_IN ||
140 task->data_phase == TASKFILE_MULTI_OUT) {
141 if (!drive->mult_count) {
142 printk(KERN_ERR "%s: multimode not set!\n",
143 drive->name);
144 return ide_stopped;
145 }
146 }
147
148 if (task->tf_flags & IDE_TFLAG_FLAGGED)
149 task->tf_flags |= IDE_TFLAG_FLAGGED_SET_IN_FLAGS;
150
151 if ((task->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0)
152 ide_tf_load(drive, task);
153
154 switch (task->data_phase) {
155 case TASKFILE_MULTI_OUT:
156 case TASKFILE_OUT:
157 hwif->OUTBSYNC(drive, tf->command,
158 hwif->io_ports[IDE_COMMAND_OFFSET]);
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 hwif->dma_setup(drive))
182 return ide_stopped;
183 hwif->dma_exec_cmd(drive, tf->command);
184 hwif->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, unsigned int write)
287 {
288 ide_hwif_t *hwif = drive->hwif;
289 struct scatterlist *sg = hwif->sg_table;
290 struct scatterlist *cursg = hwif->cursg;
291 struct page *page;
292 #ifdef CONFIG_HIGHMEM
293 unsigned long flags;
294 #endif
295 unsigned int offset;
296 u8 *buf;
297
298 cursg = hwif->cursg;
299 if (!cursg) {
300 cursg = sg;
301 hwif->cursg = sg;
302 }
303
304 page = sg_page(cursg);
305 offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE;
306
307 /* get the current page and offset */
308 page = nth_page(page, (offset >> PAGE_SHIFT));
309 offset %= PAGE_SIZE;
310
311 #ifdef CONFIG_HIGHMEM
312 local_irq_save(flags);
313 #endif
314 buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset;
315
316 hwif->nleft--;
317 hwif->cursg_ofs++;
318
319 if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) {
320 hwif->cursg = sg_next(hwif->cursg);
321 hwif->cursg_ofs = 0;
322 }
323
324 /* do the actual data transfer */
325 if (write)
326 hwif->ata_output_data(drive, buf, SECTOR_WORDS);
327 else
328 hwif->ata_input_data(drive, buf, SECTOR_WORDS);
329
330 kunmap_atomic(buf, KM_BIO_SRC_IRQ);
331 #ifdef CONFIG_HIGHMEM
332 local_irq_restore(flags);
333 #endif
334 }
335
336 static void ide_pio_multi(ide_drive_t *drive, unsigned int write)
337 {
338 unsigned int nsect;
339
340 nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count);
341 while (nsect--)
342 ide_pio_sector(drive, write);
343 }
344
345 static void ide_pio_datablock(ide_drive_t *drive, struct request *rq,
346 unsigned int write)
347 {
348 u8 saved_io_32bit = drive->io_32bit;
349
350 if (rq->bio) /* fs request */
351 rq->errors = 0;
352
353 if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
354 ide_task_t *task = rq->special;
355
356 if (task->tf_flags & IDE_TFLAG_IO_16BIT)
357 drive->io_32bit = 0;
358 }
359
360 touch_softlockup_watchdog();
361
362 switch (drive->hwif->data_phase) {
363 case TASKFILE_MULTI_IN:
364 case TASKFILE_MULTI_OUT:
365 ide_pio_multi(drive, write);
366 break;
367 default:
368 ide_pio_sector(drive, write);
369 break;
370 }
371
372 drive->io_32bit = saved_io_32bit;
373 }
374
375 static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq,
376 const char *s, u8 stat)
377 {
378 if (rq->bio) {
379 ide_hwif_t *hwif = drive->hwif;
380 int sectors = hwif->nsect - hwif->nleft;
381
382 switch (hwif->data_phase) {
383 case TASKFILE_IN:
384 if (hwif->nleft)
385 break;
386 /* fall through */
387 case TASKFILE_OUT:
388 sectors--;
389 break;
390 case TASKFILE_MULTI_IN:
391 if (hwif->nleft)
392 break;
393 /* fall through */
394 case TASKFILE_MULTI_OUT:
395 sectors -= drive->mult_count;
396 default:
397 break;
398 }
399
400 if (sectors > 0) {
401 ide_driver_t *drv;
402
403 drv = *(ide_driver_t **)rq->rq_disk->private_data;
404 drv->end_request(drive, 1, sectors);
405 }
406 }
407 return ide_error(drive, s, stat);
408 }
409
410 void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat)
411 {
412 if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
413 u8 err = ide_read_error(drive);
414
415 ide_end_drive_cmd(drive, stat, err);
416 return;
417 }
418
419 if (rq->rq_disk) {
420 ide_driver_t *drv;
421
422 drv = *(ide_driver_t **)rq->rq_disk->private_data;;
423 drv->end_request(drive, 1, rq->nr_sectors);
424 } else
425 ide_end_request(drive, 1, rq->nr_sectors);
426 }
427
428 /*
429 * We got an interrupt on a task_in case, but no errors and no DRQ.
430 *
431 * It might be a spurious irq (shared irq), but it might be a
432 * command that had no output.
433 */
434 static ide_startstop_t task_in_unexpected(ide_drive_t *drive, struct request *rq, u8 stat)
435 {
436 /* Command all done? */
437 if (OK_STAT(stat, READY_STAT, BUSY_STAT)) {
438 task_end_request(drive, rq, stat);
439 return ide_stopped;
440 }
441
442 /* Assume it was a spurious irq */
443 ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
444 return ide_started;
445 }
446
447 /*
448 * Handler for command with PIO data-in phase (Read/Read Multiple).
449 */
450 static ide_startstop_t task_in_intr(ide_drive_t *drive)
451 {
452 ide_hwif_t *hwif = drive->hwif;
453 struct request *rq = HWGROUP(drive)->rq;
454 u8 stat = ide_read_status(drive);
455
456 /* Error? */
457 if (stat & ERR_STAT)
458 return task_error(drive, rq, __FUNCTION__, stat);
459
460 /* Didn't want any data? Odd. */
461 if (!(stat & DRQ_STAT))
462 return task_in_unexpected(drive, rq, stat);
463
464 ide_pio_datablock(drive, rq, 0);
465
466 /* Are we done? Check status and finish transfer. */
467 if (!hwif->nleft) {
468 stat = wait_drive_not_busy(drive);
469 if (!OK_STAT(stat, 0, BAD_STAT))
470 return task_error(drive, rq, __FUNCTION__, stat);
471 task_end_request(drive, rq, stat);
472 return ide_stopped;
473 }
474
475 /* Still data left to transfer. */
476 ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
477
478 return ide_started;
479 }
480
481 /*
482 * Handler for command with PIO data-out phase (Write/Write Multiple).
483 */
484 static ide_startstop_t task_out_intr (ide_drive_t *drive)
485 {
486 ide_hwif_t *hwif = drive->hwif;
487 struct request *rq = HWGROUP(drive)->rq;
488 u8 stat = ide_read_status(drive);
489
490 if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat))
491 return task_error(drive, rq, __FUNCTION__, stat);
492
493 /* Deal with unexpected ATA data phase. */
494 if (((stat & DRQ_STAT) == 0) ^ !hwif->nleft)
495 return task_error(drive, rq, __FUNCTION__, stat);
496
497 if (!hwif->nleft) {
498 task_end_request(drive, rq, stat);
499 return ide_stopped;
500 }
501
502 /* Still data left to transfer. */
503 ide_pio_datablock(drive, rq, 1);
504 ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
505
506 return ide_started;
507 }
508
509 static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq)
510 {
511 ide_startstop_t startstop;
512
513 if (ide_wait_stat(&startstop, drive, DRQ_STAT,
514 drive->bad_wstat, WAIT_DRQ)) {
515 printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n",
516 drive->name,
517 drive->hwif->data_phase ? "MULT" : "",
518 drive->addressing ? "_EXT" : "");
519 return startstop;
520 }
521
522 if (!drive->unmask)
523 local_irq_disable();
524
525 ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
526 ide_pio_datablock(drive, rq, 1);
527
528 return ide_started;
529 }
530
531 int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect)
532 {
533 struct request rq;
534
535 memset(&rq, 0, sizeof(rq));
536 rq.ref_count = 1;
537 rq.cmd_type = REQ_TYPE_ATA_TASKFILE;
538 rq.buffer = buf;
539
540 /*
541 * (ks) We transfer currently only whole sectors.
542 * This is suffient for now. But, it would be great,
543 * if we would find a solution to transfer any size.
544 * To support special commands like READ LONG.
545 */
546 rq.hard_nr_sectors = rq.nr_sectors = nsect;
547 rq.hard_cur_sectors = rq.current_nr_sectors = nsect;
548
549 if (task->tf_flags & IDE_TFLAG_WRITE)
550 rq.cmd_flags |= REQ_RW;
551
552 rq.special = task;
553 task->rq = &rq;
554
555 return ide_do_drive_cmd(drive, &rq, ide_wait);
556 }
557
558 EXPORT_SYMBOL(ide_raw_taskfile);
559
560 int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task)
561 {
562 task->data_phase = TASKFILE_NO_DATA;
563
564 return ide_raw_taskfile(drive, task, NULL, 0);
565 }
566 EXPORT_SYMBOL_GPL(ide_no_data_taskfile);
567
568 #ifdef CONFIG_IDE_TASK_IOCTL
569 int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
570 {
571 ide_task_request_t *req_task;
572 ide_task_t args;
573 u8 *outbuf = NULL;
574 u8 *inbuf = NULL;
575 u8 *data_buf = NULL;
576 int err = 0;
577 int tasksize = sizeof(struct ide_task_request_s);
578 unsigned int taskin = 0;
579 unsigned int taskout = 0;
580 u16 nsect = 0;
581 char __user *buf = (char __user *)arg;
582
583 // printk("IDE Taskfile ...\n");
584
585 req_task = kzalloc(tasksize, GFP_KERNEL);
586 if (req_task == NULL) return -ENOMEM;
587 if (copy_from_user(req_task, buf, tasksize)) {
588 kfree(req_task);
589 return -EFAULT;
590 }
591
592 taskout = req_task->out_size;
593 taskin = req_task->in_size;
594
595 if (taskin > 65536 || taskout > 65536) {
596 err = -EINVAL;
597 goto abort;
598 }
599
600 if (taskout) {
601 int outtotal = tasksize;
602 outbuf = kzalloc(taskout, GFP_KERNEL);
603 if (outbuf == NULL) {
604 err = -ENOMEM;
605 goto abort;
606 }
607 if (copy_from_user(outbuf, buf + outtotal, taskout)) {
608 err = -EFAULT;
609 goto abort;
610 }
611 }
612
613 if (taskin) {
614 int intotal = tasksize + taskout;
615 inbuf = kzalloc(taskin, GFP_KERNEL);
616 if (inbuf == NULL) {
617 err = -ENOMEM;
618 goto abort;
619 }
620 if (copy_from_user(inbuf, buf + intotal, taskin)) {
621 err = -EFAULT;
622 goto abort;
623 }
624 }
625
626 memset(&args, 0, sizeof(ide_task_t));
627
628 memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2);
629 memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE);
630
631 args.data_phase = req_task->data_phase;
632
633 args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE |
634 IDE_TFLAG_IN_TF;
635 if (drive->addressing == 1)
636 args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB);
637
638 if (req_task->out_flags.all) {
639 args.tf_flags |= IDE_TFLAG_FLAGGED;
640
641 if (req_task->out_flags.b.data)
642 args.tf_flags |= IDE_TFLAG_OUT_DATA;
643
644 if (req_task->out_flags.b.nsector_hob)
645 args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT;
646 if (req_task->out_flags.b.sector_hob)
647 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL;
648 if (req_task->out_flags.b.lcyl_hob)
649 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM;
650 if (req_task->out_flags.b.hcyl_hob)
651 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH;
652
653 if (req_task->out_flags.b.error_feature)
654 args.tf_flags |= IDE_TFLAG_OUT_FEATURE;
655 if (req_task->out_flags.b.nsector)
656 args.tf_flags |= IDE_TFLAG_OUT_NSECT;
657 if (req_task->out_flags.b.sector)
658 args.tf_flags |= IDE_TFLAG_OUT_LBAL;
659 if (req_task->out_flags.b.lcyl)
660 args.tf_flags |= IDE_TFLAG_OUT_LBAM;
661 if (req_task->out_flags.b.hcyl)
662 args.tf_flags |= IDE_TFLAG_OUT_LBAH;
663 } else {
664 args.tf_flags |= IDE_TFLAG_OUT_TF;
665 if (args.tf_flags & IDE_TFLAG_LBA48)
666 args.tf_flags |= IDE_TFLAG_OUT_HOB;
667 }
668
669 if (req_task->in_flags.b.data)
670 args.tf_flags |= IDE_TFLAG_IN_DATA;
671
672 switch(req_task->data_phase) {
673 case TASKFILE_MULTI_OUT:
674 if (!drive->mult_count) {
675 /* (hs): give up if multcount is not set */
676 printk(KERN_ERR "%s: %s Multimode Write " \
677 "multcount is not set\n",
678 drive->name, __FUNCTION__);
679 err = -EPERM;
680 goto abort;
681 }
682 /* fall through */
683 case TASKFILE_OUT:
684 /* fall through */
685 case TASKFILE_OUT_DMAQ:
686 case TASKFILE_OUT_DMA:
687 nsect = taskout / SECTOR_SIZE;
688 data_buf = outbuf;
689 break;
690 case TASKFILE_MULTI_IN:
691 if (!drive->mult_count) {
692 /* (hs): give up if multcount is not set */
693 printk(KERN_ERR "%s: %s Multimode Read failure " \
694 "multcount is not set\n",
695 drive->name, __FUNCTION__);
696 err = -EPERM;
697 goto abort;
698 }
699 /* fall through */
700 case TASKFILE_IN:
701 /* fall through */
702 case TASKFILE_IN_DMAQ:
703 case TASKFILE_IN_DMA:
704 nsect = taskin / SECTOR_SIZE;
705 data_buf = inbuf;
706 break;
707 case TASKFILE_NO_DATA:
708 break;
709 default:
710 err = -EFAULT;
711 goto abort;
712 }
713
714 if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA)
715 nsect = 0;
716 else if (!nsect) {
717 nsect = (args.tf.hob_nsect << 8) | args.tf.nsect;
718
719 if (!nsect) {
720 printk(KERN_ERR "%s: in/out command without data\n",
721 drive->name);
722 err = -EFAULT;
723 goto abort;
724 }
725 }
726
727 if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE)
728 args.tf_flags |= IDE_TFLAG_WRITE;
729
730 err = ide_raw_taskfile(drive, &args, data_buf, nsect);
731
732 memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2);
733 memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE);
734
735 if ((args.tf_flags & IDE_TFLAG_FLAGGED_SET_IN_FLAGS) &&
736 req_task->in_flags.all == 0) {
737 req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS;
738 if (drive->addressing == 1)
739 req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8);
740 }
741
742 if (copy_to_user(buf, req_task, tasksize)) {
743 err = -EFAULT;
744 goto abort;
745 }
746 if (taskout) {
747 int outtotal = tasksize;
748 if (copy_to_user(buf + outtotal, outbuf, taskout)) {
749 err = -EFAULT;
750 goto abort;
751 }
752 }
753 if (taskin) {
754 int intotal = tasksize + taskout;
755 if (copy_to_user(buf + intotal, inbuf, taskin)) {
756 err = -EFAULT;
757 goto abort;
758 }
759 }
760 abort:
761 kfree(req_task);
762 kfree(outbuf);
763 kfree(inbuf);
764
765 // printk("IDE Taskfile ioctl ended. rc = %i\n", err);
766
767 return err;
768 }
769 #endif
770
771 int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
772 {
773 u8 *buf = NULL;
774 int bufsize = 0, err = 0;
775 u8 args[4], xfer_rate = 0;
776 ide_task_t tfargs;
777 struct ide_taskfile *tf = &tfargs.tf;
778 struct hd_driveid *id = drive->id;
779
780 if (NULL == (void *) arg) {
781 struct request rq;
782
783 ide_init_drive_cmd(&rq);
784 rq.cmd_type = REQ_TYPE_ATA_TASKFILE;
785
786 return ide_do_drive_cmd(drive, &rq, ide_wait);
787 }
788
789 if (copy_from_user(args, (void __user *)arg, 4))
790 return -EFAULT;
791
792 memset(&tfargs, 0, sizeof(ide_task_t));
793 tf->feature = args[2];
794 if (args[0] == WIN_SMART) {
795 tf->nsect = args[3];
796 tf->lbal = args[1];
797 tf->lbam = 0x4f;
798 tf->lbah = 0xc2;
799 tfargs.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_IN_NSECT;
800 } else {
801 tf->nsect = args[1];
802 tfargs.tf_flags = IDE_TFLAG_OUT_FEATURE |
803 IDE_TFLAG_OUT_NSECT | IDE_TFLAG_IN_NSECT;
804 }
805 tf->command = args[0];
806 tfargs.data_phase = args[3] ? TASKFILE_IN : TASKFILE_NO_DATA;
807
808 if (args[3]) {
809 tfargs.tf_flags |= IDE_TFLAG_IO_16BIT;
810 bufsize = SECTOR_WORDS * 4 * args[3];
811 buf = kzalloc(bufsize, GFP_KERNEL);
812 if (buf == NULL)
813 return -ENOMEM;
814 }
815
816 if (tf->command == WIN_SETFEATURES &&
817 tf->feature == SETFEATURES_XFER &&
818 tf->nsect >= XFER_SW_DMA_0 &&
819 (id->dma_ultra || id->dma_mword || id->dma_1word)) {
820 xfer_rate = args[1];
821 if (tf->nsect > XFER_UDMA_2 && !eighty_ninty_three(drive)) {
822 printk(KERN_WARNING "%s: UDMA speeds >UDMA33 cannot "
823 "be set\n", drive->name);
824 goto abort;
825 }
826 }
827
828 err = ide_raw_taskfile(drive, &tfargs, buf, args[3]);
829
830 args[0] = tf->status;
831 args[1] = tf->error;
832 args[2] = tf->nsect;
833
834 if (!err && xfer_rate) {
835 /* active-retuning-calls future */
836 ide_set_xfer_rate(drive, xfer_rate);
837 ide_driveid_update(drive);
838 }
839 abort:
840 if (copy_to_user((void __user *)arg, &args, 4))
841 err = -EFAULT;
842 if (buf) {
843 if (copy_to_user((void __user *)(arg + 4), buf, bufsize))
844 err = -EFAULT;
845 kfree(buf);
846 }
847 return err;
848 }
849
850 int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
851 {
852 void __user *p = (void __user *)arg;
853 int err = 0;
854 u8 args[7];
855 ide_task_t task;
856
857 if (copy_from_user(args, p, 7))
858 return -EFAULT;
859
860 memset(&task, 0, sizeof(task));
861 memcpy(&task.tf_array[7], &args[1], 6);
862 task.tf.command = args[0];
863 task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
864
865 err = ide_no_data_taskfile(drive, &task);
866
867 args[0] = task.tf.command;
868 memcpy(&args[1], &task.tf_array[7], 6);
869
870 if (copy_to_user(p, args, 7))
871 err = -EFAULT;
872
873 return err;
874 }
x86 "subsystem" repository