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kbuild: Fix instrumentation removal breakage on avr32
[wrt350n-kernel.git] / drivers / ide / ide-taskfile.c
blob4e1da1c78cb51299ce359729a78b460e2c1d8c36
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, IDE_DATA_REG);
63
64 if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
65 hwif->OUTB(tf->hob_feature, IDE_FEATURE_REG);
66 if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
67 hwif->OUTB(tf->hob_nsect, IDE_NSECTOR_REG);
68 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
69 hwif->OUTB(tf->hob_lbal, IDE_SECTOR_REG);
70 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
71 hwif->OUTB(tf->hob_lbam, IDE_LCYL_REG);
72 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
73 hwif->OUTB(tf->hob_lbah, IDE_HCYL_REG);
74
75 if (task->tf_flags & IDE_TFLAG_OUT_FEATURE)
76 hwif->OUTB(tf->feature, IDE_FEATURE_REG);
77 if (task->tf_flags & IDE_TFLAG_OUT_NSECT)
78 hwif->OUTB(tf->nsect, IDE_NSECTOR_REG);
79 if (task->tf_flags & IDE_TFLAG_OUT_LBAL)
80 hwif->OUTB(tf->lbal, IDE_SECTOR_REG);
81 if (task->tf_flags & IDE_TFLAG_OUT_LBAM)
82 hwif->OUTB(tf->lbam, IDE_LCYL_REG);
83 if (task->tf_flags & IDE_TFLAG_OUT_LBAH)
84 hwif->OUTB(tf->lbah, IDE_HCYL_REG);
85
86 if (task->tf_flags & IDE_TFLAG_OUT_DEVICE)
87 hwif->OUTB((tf->device & HIHI) | drive->select.all, IDE_SELECT_REG);
88 }
89
90 int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf)
91 {
92 ide_task_t args;
93
94 memset(&args, 0, sizeof(ide_task_t));
95 args.tf.nsect = 0x01;
96 if (drive->media == ide_disk)
97 args.tf.command = WIN_IDENTIFY;
98 else
99 args.tf.command = WIN_PIDENTIFY;
100 args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
101 args.data_phase = TASKFILE_IN;
102 return ide_raw_taskfile(drive, &args, buf, 1);
103 }
104
105 static int inline task_dma_ok(ide_task_t *task)
106 {
107 if (blk_fs_request(task->rq) || (task->tf_flags & IDE_TFLAG_FLAGGED))
108 return 1;
109
110 switch (task->tf.command) {
111 case WIN_WRITEDMA_ONCE:
112 case WIN_WRITEDMA:
113 case WIN_WRITEDMA_EXT:
114 case WIN_READDMA_ONCE:
115 case WIN_READDMA:
116 case WIN_READDMA_EXT:
117 case WIN_IDENTIFY_DMA:
118 return 1;
119 }
120
121 return 0;
122 }
123
124 static ide_startstop_t task_no_data_intr(ide_drive_t *);
125 static ide_startstop_t set_geometry_intr(ide_drive_t *);
126 static ide_startstop_t recal_intr(ide_drive_t *);
127 static ide_startstop_t set_multmode_intr(ide_drive_t *);
128 static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *);
129 static ide_startstop_t task_in_intr(ide_drive_t *);
130
131 ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task)
132 {
133 ide_hwif_t *hwif = HWIF(drive);
134 struct ide_taskfile *tf = &task->tf;
135 ide_handler_t *handler = NULL;
136
137 if (task->data_phase == TASKFILE_MULTI_IN ||
138 task->data_phase == TASKFILE_MULTI_OUT) {
139 if (!drive->mult_count) {
140 printk(KERN_ERR "%s: multimode not set!\n",
141 drive->name);
142 return ide_stopped;
143 }
144 }
145
146 if (task->tf_flags & IDE_TFLAG_FLAGGED)
147 task->tf_flags |= IDE_TFLAG_FLAGGED_SET_IN_FLAGS;
148
149 if ((task->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0)
150 ide_tf_load(drive, task);
151
152 switch (task->data_phase) {
153 case TASKFILE_MULTI_OUT:
154 case TASKFILE_OUT:
155 hwif->OUTBSYNC(drive, tf->command, IDE_COMMAND_REG);
156 ndelay(400); /* FIXME */
157 return pre_task_out_intr(drive, task->rq);
158 case TASKFILE_MULTI_IN:
159 case TASKFILE_IN:
160 handler = task_in_intr;
161 /* fall-through */
162 case TASKFILE_NO_DATA:
163 if (handler == NULL)
164 handler = task_no_data_intr;
165 /* WIN_{SPECIFY,RESTORE,SETMULT} use custom handlers */
166 if (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) {
167 switch (tf->command) {
168 case WIN_SPECIFY: handler = set_geometry_intr; break;
169 case WIN_RESTORE: handler = recal_intr; break;
170 case WIN_SETMULT: handler = set_multmode_intr; break;
171 }
172 }
173 ide_execute_command(drive, tf->command, handler,
174 WAIT_WORSTCASE, NULL);
175 return ide_started;
176 default:
177 if (task_dma_ok(task) == 0 || drive->using_dma == 0 ||
178 hwif->dma_setup(drive))
179 return ide_stopped;
180 hwif->dma_exec_cmd(drive, tf->command);
181 hwif->dma_start(drive);
182 return ide_started;
183 }
184 }
185 EXPORT_SYMBOL_GPL(do_rw_taskfile);
186
187 /*
188 * set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd.
189 */
190 static ide_startstop_t set_multmode_intr(ide_drive_t *drive)
191 {
192 ide_hwif_t *hwif = HWIF(drive);
193 u8 stat;
194
195 if (OK_STAT(stat = hwif->INB(IDE_STATUS_REG),READY_STAT,BAD_STAT)) {
196 drive->mult_count = drive->mult_req;
197 } else {
198 drive->mult_req = drive->mult_count = 0;
199 drive->special.b.recalibrate = 1;
200 (void) ide_dump_status(drive, "set_multmode", stat);
201 }
202 return ide_stopped;
203 }
204
205 /*
206 * set_geometry_intr() is invoked on completion of a WIN_SPECIFY cmd.
207 */
208 static ide_startstop_t set_geometry_intr(ide_drive_t *drive)
209 {
210 ide_hwif_t *hwif = HWIF(drive);
211 int retries = 5;
212 u8 stat;
213
214 while (((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) && retries--)
215 udelay(10);
216
217 if (OK_STAT(stat, READY_STAT, BAD_STAT))
218 return ide_stopped;
219
220 if (stat & (ERR_STAT|DRQ_STAT))
221 return ide_error(drive, "set_geometry_intr", stat);
222
223 BUG_ON(HWGROUP(drive)->handler != NULL);
224 ide_set_handler(drive, &set_geometry_intr, WAIT_WORSTCASE, NULL);
225 return ide_started;
226 }
227
228 /*
229 * recal_intr() is invoked on completion of a WIN_RESTORE (recalibrate) cmd.
230 */
231 static ide_startstop_t recal_intr(ide_drive_t *drive)
232 {
233 ide_hwif_t *hwif = HWIF(drive);
234 u8 stat;
235
236 if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG), 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 ide_hwif_t *hwif = HWIF(drive);
248 u8 stat;
249
250 local_irq_enable_in_hardirq();
251 if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG),READY_STAT,BAD_STAT)) {
252 return ide_error(drive, "task_no_data_intr", stat);
253 /* calls ide_end_drive_cmd */
254 }
255 if (args)
256 ide_end_drive_cmd(drive, stat, hwif->INB(IDE_ERROR_REG));
257
258 return ide_stopped;
259 }
260
261 static u8 wait_drive_not_busy(ide_drive_t *drive)
262 {
263 ide_hwif_t *hwif = HWIF(drive);
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 if ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT)
273 udelay(10);
274 else
275 break;
276 }
277
278 if (stat & BUSY_STAT)
279 printk(KERN_ERR "%s: drive still BUSY!\n", drive->name);
280
281 return stat;
282 }
283
284 static void ide_pio_sector(ide_drive_t *drive, unsigned int write)
285 {
286 ide_hwif_t *hwif = drive->hwif;
287 struct scatterlist *sg = hwif->sg_table;
288 struct scatterlist *cursg = hwif->cursg;
289 struct page *page;
290 #ifdef CONFIG_HIGHMEM
291 unsigned long flags;
292 #endif
293 unsigned int offset;
294 u8 *buf;
295
296 cursg = hwif->cursg;
297 if (!cursg) {
298 cursg = sg;
299 hwif->cursg = sg;
300 }
301
302 page = sg_page(cursg);
303 offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE;
304
305 /* get the current page and offset */
306 page = nth_page(page, (offset >> PAGE_SHIFT));
307 offset %= PAGE_SIZE;
308
309 #ifdef CONFIG_HIGHMEM
310 local_irq_save(flags);
311 #endif
312 buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset;
313
314 hwif->nleft--;
315 hwif->cursg_ofs++;
316
317 if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) {
318 hwif->cursg = sg_next(hwif->cursg);
319 hwif->cursg_ofs = 0;
320 }
321
322 /* do the actual data transfer */
323 if (write)
324 hwif->ata_output_data(drive, buf, SECTOR_WORDS);
325 else
326 hwif->ata_input_data(drive, buf, SECTOR_WORDS);
327
328 kunmap_atomic(buf, KM_BIO_SRC_IRQ);
329 #ifdef CONFIG_HIGHMEM
330 local_irq_restore(flags);
331 #endif
332 }
333
334 static void ide_pio_multi(ide_drive_t *drive, unsigned int write)
335 {
336 unsigned int nsect;
337
338 nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count);
339 while (nsect--)
340 ide_pio_sector(drive, write);
341 }
342
343 static void ide_pio_datablock(ide_drive_t *drive, struct request *rq,
344 unsigned int write)
345 {
346 u8 saved_io_32bit = drive->io_32bit;
347
348 if (rq->bio) /* fs request */
349 rq->errors = 0;
350
351 if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
352 ide_task_t *task = rq->special;
353
354 if (task->tf_flags & IDE_TFLAG_IO_16BIT)
355 drive->io_32bit = 0;
356 }
357
358 touch_softlockup_watchdog();
359
360 switch (drive->hwif->data_phase) {
361 case TASKFILE_MULTI_IN:
362 case TASKFILE_MULTI_OUT:
363 ide_pio_multi(drive, write);
364 break;
365 default:
366 ide_pio_sector(drive, write);
367 break;
368 }
369
370 drive->io_32bit = saved_io_32bit;
371 }
372
373 static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq,
374 const char *s, u8 stat)
375 {
376 if (rq->bio) {
377 ide_hwif_t *hwif = drive->hwif;
378 int sectors = hwif->nsect - hwif->nleft;
379
380 switch (hwif->data_phase) {
381 case TASKFILE_IN:
382 if (hwif->nleft)
383 break;
384 /* fall through */
385 case TASKFILE_OUT:
386 sectors--;
387 break;
388 case TASKFILE_MULTI_IN:
389 if (hwif->nleft)
390 break;
391 /* fall through */
392 case TASKFILE_MULTI_OUT:
393 sectors -= drive->mult_count;
394 default:
395 break;
396 }
397
398 if (sectors > 0) {
399 ide_driver_t *drv;
400
401 drv = *(ide_driver_t **)rq->rq_disk->private_data;
402 drv->end_request(drive, 1, sectors);
403 }
404 }
405 return ide_error(drive, s, stat);
406 }
407
408 void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat)
409 {
410 if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
411 u8 err = drive->hwif->INB(IDE_ERROR_REG);
412
413 ide_end_drive_cmd(drive, stat, err);
414 return;
415 }
416
417 if (rq->rq_disk) {
418 ide_driver_t *drv;
419
420 drv = *(ide_driver_t **)rq->rq_disk->private_data;;
421 drv->end_request(drive, 1, rq->nr_sectors);
422 } else
423 ide_end_request(drive, 1, rq->nr_sectors);
424 }
425
426 /*
427 * Handler for command with PIO data-in phase (Read/Read Multiple).
428 */
429 static ide_startstop_t task_in_intr(ide_drive_t *drive)
430 {
431 ide_hwif_t *hwif = drive->hwif;
432 struct request *rq = HWGROUP(drive)->rq;
433 u8 stat = hwif->INB(IDE_STATUS_REG);
434
435 /* new way for dealing with premature shared PCI interrupts */
436 if (!OK_STAT(stat, DRQ_STAT, BAD_R_STAT)) {
437 if (stat & (ERR_STAT | DRQ_STAT))
438 return task_error(drive, rq, __FUNCTION__, stat);
439 /* No data yet, so wait for another IRQ. */
440 ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
441 return ide_started;
442 }
443
444 ide_pio_datablock(drive, rq, 0);
445
446 /* If it was the last datablock check status and finish transfer. */
447 if (!hwif->nleft) {
448 stat = wait_drive_not_busy(drive);
449 if (!OK_STAT(stat, 0, BAD_STAT))
450 return task_error(drive, rq, __FUNCTION__, stat);
451 task_end_request(drive, rq, stat);
452 return ide_stopped;
453 }
454
455 /* Still data left to transfer. */
456 ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
457
458 return ide_started;
459 }
460
461 /*
462 * Handler for command with PIO data-out phase (Write/Write Multiple).
463 */
464 static ide_startstop_t task_out_intr (ide_drive_t *drive)
465 {
466 ide_hwif_t *hwif = drive->hwif;
467 struct request *rq = HWGROUP(drive)->rq;
468 u8 stat = hwif->INB(IDE_STATUS_REG);
469
470 if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat))
471 return task_error(drive, rq, __FUNCTION__, stat);
472
473 /* Deal with unexpected ATA data phase. */
474 if (((stat & DRQ_STAT) == 0) ^ !hwif->nleft)
475 return task_error(drive, rq, __FUNCTION__, stat);
476
477 if (!hwif->nleft) {
478 task_end_request(drive, rq, stat);
479 return ide_stopped;
480 }
481
482 /* Still data left to transfer. */
483 ide_pio_datablock(drive, rq, 1);
484 ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
485
486 return ide_started;
487 }
488
489 static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq)
490 {
491 ide_startstop_t startstop;
492
493 if (ide_wait_stat(&startstop, drive, DRQ_STAT,
494 drive->bad_wstat, WAIT_DRQ)) {
495 printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n",
496 drive->name,
497 drive->hwif->data_phase ? "MULT" : "",
498 drive->addressing ? "_EXT" : "");
499 return startstop;
500 }
501
502 if (!drive->unmask)
503 local_irq_disable();
504
505 ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
506 ide_pio_datablock(drive, rq, 1);
507
508 return ide_started;
509 }
510
511 int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect)
512 {
513 struct request rq;
514
515 memset(&rq, 0, sizeof(rq));
516 rq.ref_count = 1;
517 rq.cmd_type = REQ_TYPE_ATA_TASKFILE;
518 rq.buffer = buf;
519
520 /*
521 * (ks) We transfer currently only whole sectors.
522 * This is suffient for now. But, it would be great,
523 * if we would find a solution to transfer any size.
524 * To support special commands like READ LONG.
525 */
526 rq.hard_nr_sectors = rq.nr_sectors = nsect;
527 rq.hard_cur_sectors = rq.current_nr_sectors = nsect;
528
529 if (task->tf_flags & IDE_TFLAG_WRITE)
530 rq.cmd_flags |= REQ_RW;
531
532 rq.special = task;
533 task->rq = &rq;
534
535 return ide_do_drive_cmd(drive, &rq, ide_wait);
536 }
537
538 EXPORT_SYMBOL(ide_raw_taskfile);
539
540 int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task)
541 {
542 task->data_phase = TASKFILE_NO_DATA;
543
544 return ide_raw_taskfile(drive, task, NULL, 0);
545 }
546 EXPORT_SYMBOL_GPL(ide_no_data_taskfile);
547
548 #ifdef CONFIG_IDE_TASK_IOCTL
549 int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
550 {
551 ide_task_request_t *req_task;
552 ide_task_t args;
553 u8 *outbuf = NULL;
554 u8 *inbuf = NULL;
555 u8 *data_buf = NULL;
556 int err = 0;
557 int tasksize = sizeof(struct ide_task_request_s);
558 unsigned int taskin = 0;
559 unsigned int taskout = 0;
560 u16 nsect = 0;
561 char __user *buf = (char __user *)arg;
562
563 // printk("IDE Taskfile ...\n");
564
565 req_task = kzalloc(tasksize, GFP_KERNEL);
566 if (req_task == NULL) return -ENOMEM;
567 if (copy_from_user(req_task, buf, tasksize)) {
568 kfree(req_task);
569 return -EFAULT;
570 }
571
572 taskout = req_task->out_size;
573 taskin = req_task->in_size;
574
575 if (taskin > 65536 || taskout > 65536) {
576 err = -EINVAL;
577 goto abort;
578 }
579
580 if (taskout) {
581 int outtotal = tasksize;
582 outbuf = kzalloc(taskout, GFP_KERNEL);
583 if (outbuf == NULL) {
584 err = -ENOMEM;
585 goto abort;
586 }
587 if (copy_from_user(outbuf, buf + outtotal, taskout)) {
588 err = -EFAULT;
589 goto abort;
590 }
591 }
592
593 if (taskin) {
594 int intotal = tasksize + taskout;
595 inbuf = kzalloc(taskin, GFP_KERNEL);
596 if (inbuf == NULL) {
597 err = -ENOMEM;
598 goto abort;
599 }
600 if (copy_from_user(inbuf, buf + intotal, taskin)) {
601 err = -EFAULT;
602 goto abort;
603 }
604 }
605
606 memset(&args, 0, sizeof(ide_task_t));
607
608 memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2);
609 memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE);
610
611 args.data_phase = req_task->data_phase;
612
613 args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE |
614 IDE_TFLAG_IN_TF;
615 if (drive->addressing == 1)
616 args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB);
617
618 if (req_task->out_flags.all) {
619 args.tf_flags |= IDE_TFLAG_FLAGGED;
620
621 if (req_task->out_flags.b.data)
622 args.tf_flags |= IDE_TFLAG_OUT_DATA;
623
624 if (req_task->out_flags.b.nsector_hob)
625 args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT;
626 if (req_task->out_flags.b.sector_hob)
627 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL;
628 if (req_task->out_flags.b.lcyl_hob)
629 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM;
630 if (req_task->out_flags.b.hcyl_hob)
631 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH;
632
633 if (req_task->out_flags.b.error_feature)
634 args.tf_flags |= IDE_TFLAG_OUT_FEATURE;
635 if (req_task->out_flags.b.nsector)
636 args.tf_flags |= IDE_TFLAG_OUT_NSECT;
637 if (req_task->out_flags.b.sector)
638 args.tf_flags |= IDE_TFLAG_OUT_LBAL;
639 if (req_task->out_flags.b.lcyl)
640 args.tf_flags |= IDE_TFLAG_OUT_LBAM;
641 if (req_task->out_flags.b.hcyl)
642 args.tf_flags |= IDE_TFLAG_OUT_LBAH;
643 } else {
644 args.tf_flags |= IDE_TFLAG_OUT_TF;
645 if (args.tf_flags & IDE_TFLAG_LBA48)
646 args.tf_flags |= IDE_TFLAG_OUT_HOB;
647 }
648
649 if (req_task->in_flags.b.data)
650 args.tf_flags |= IDE_TFLAG_IN_DATA;
651
652 switch(req_task->data_phase) {
653 case TASKFILE_MULTI_OUT:
654 if (!drive->mult_count) {
655 /* (hs): give up if multcount is not set */
656 printk(KERN_ERR "%s: %s Multimode Write " \
657 "multcount is not set\n",
658 drive->name, __FUNCTION__);
659 err = -EPERM;
660 goto abort;
661 }
662 /* fall through */
663 case TASKFILE_OUT:
664 /* fall through */
665 case TASKFILE_OUT_DMAQ:
666 case TASKFILE_OUT_DMA:
667 nsect = taskout / SECTOR_SIZE;
668 data_buf = outbuf;
669 break;
670 case TASKFILE_MULTI_IN:
671 if (!drive->mult_count) {
672 /* (hs): give up if multcount is not set */
673 printk(KERN_ERR "%s: %s Multimode Read failure " \
674 "multcount is not set\n",
675 drive->name, __FUNCTION__);
676 err = -EPERM;
677 goto abort;
678 }
679 /* fall through */
680 case TASKFILE_IN:
681 /* fall through */
682 case TASKFILE_IN_DMAQ:
683 case TASKFILE_IN_DMA:
684 nsect = taskin / SECTOR_SIZE;
685 data_buf = inbuf;
686 break;
687 case TASKFILE_NO_DATA:
688 break;
689 default:
690 err = -EFAULT;
691 goto abort;
692 }
693
694 if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA)
695 nsect = 0;
696 else if (!nsect) {
697 nsect = (args.tf.hob_nsect << 8) | args.tf.nsect;
698
699 if (!nsect) {
700 printk(KERN_ERR "%s: in/out command without data\n",
701 drive->name);
702 err = -EFAULT;
703 goto abort;
704 }
705 }
706
707 if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE)
708 args.tf_flags |= IDE_TFLAG_WRITE;
709
710 err = ide_raw_taskfile(drive, &args, data_buf, nsect);
711
712 memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2);
713 memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE);
714
715 if ((args.tf_flags & IDE_TFLAG_FLAGGED_SET_IN_FLAGS) &&
716 req_task->in_flags.all == 0) {
717 req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS;
718 if (drive->addressing == 1)
719 req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8);
720 }
721
722 if (copy_to_user(buf, req_task, tasksize)) {
723 err = -EFAULT;
724 goto abort;
725 }
726 if (taskout) {
727 int outtotal = tasksize;
728 if (copy_to_user(buf + outtotal, outbuf, taskout)) {
729 err = -EFAULT;
730 goto abort;
731 }
732 }
733 if (taskin) {
734 int intotal = tasksize + taskout;
735 if (copy_to_user(buf + intotal, inbuf, taskin)) {
736 err = -EFAULT;
737 goto abort;
738 }
739 }
740 abort:
741 kfree(req_task);
742 kfree(outbuf);
743 kfree(inbuf);
744
745 // printk("IDE Taskfile ioctl ended. rc = %i\n", err);
746
747 return err;
748 }
749 #endif
750
751 int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
752 {
753 u8 *buf = NULL;
754 int bufsize = 0, err = 0;
755 u8 args[4], xfer_rate = 0;
756 ide_task_t tfargs;
757 struct ide_taskfile *tf = &tfargs.tf;
758 struct hd_driveid *id = drive->id;
759
760 if (NULL == (void *) arg) {
761 struct request rq;
762
763 ide_init_drive_cmd(&rq);
764 rq.cmd_type = REQ_TYPE_ATA_TASKFILE;
765
766 return ide_do_drive_cmd(drive, &rq, ide_wait);
767 }
768
769 if (copy_from_user(args, (void __user *)arg, 4))
770 return -EFAULT;
771
772 memset(&tfargs, 0, sizeof(ide_task_t));
773 tf->feature = args[2];
774 if (args[0] == WIN_SMART) {
775 tf->nsect = args[3];
776 tf->lbal = args[1];
777 tf->lbam = 0x4f;
778 tf->lbah = 0xc2;
779 tfargs.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_IN_NSECT;
780 } else {
781 tf->nsect = args[1];
782 tfargs.tf_flags = IDE_TFLAG_OUT_FEATURE |
783 IDE_TFLAG_OUT_NSECT | IDE_TFLAG_IN_NSECT;
784 }
785 tf->command = args[0];
786 tfargs.data_phase = args[3] ? TASKFILE_IN : TASKFILE_NO_DATA;
787
788 if (args[3]) {
789 tfargs.tf_flags |= IDE_TFLAG_IO_16BIT;
790 bufsize = SECTOR_WORDS * 4 * args[3];
791 buf = kzalloc(bufsize, GFP_KERNEL);
792 if (buf == NULL)
793 return -ENOMEM;
794 }
795
796 if (tf->command == WIN_SETFEATURES &&
797 tf->feature == SETFEATURES_XFER &&
798 tf->nsect >= XFER_SW_DMA_0 &&
799 (id->dma_ultra || id->dma_mword || id->dma_1word)) {
800 xfer_rate = args[1];
801 if (tf->nsect > XFER_UDMA_2 && !eighty_ninty_three(drive)) {
802 printk(KERN_WARNING "%s: UDMA speeds >UDMA33 cannot "
803 "be set\n", drive->name);
804 goto abort;
805 }
806 }
807
808 err = ide_raw_taskfile(drive, &tfargs, buf, args[3]);
809
810 args[0] = tf->status;
811 args[1] = tf->error;
812 args[2] = tf->nsect;
813
814 if (!err && xfer_rate) {
815 /* active-retuning-calls future */
816 ide_set_xfer_rate(drive, xfer_rate);
817 ide_driveid_update(drive);
818 }
819 abort:
820 if (copy_to_user((void __user *)arg, &args, 4))
821 err = -EFAULT;
822 if (buf) {
823 if (copy_to_user((void __user *)(arg + 4), buf, bufsize))
824 err = -EFAULT;
825 kfree(buf);
826 }
827 return err;
828 }
829
830 int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
831 {
832 void __user *p = (void __user *)arg;
833 int err = 0;
834 u8 args[7];
835 ide_task_t task;
836
837 if (copy_from_user(args, p, 7))
838 return -EFAULT;
839
840 memset(&task, 0, sizeof(task));
841 memcpy(&task.tf_array[7], &args[1], 6);
842 task.tf.command = args[0];
843 task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
844
845 err = ide_no_data_taskfile(drive, &task);
846
847 args[0] = task.tf.command;
848 memcpy(&args[1], &task.tf_array[7], 6);
849
850 if (copy_to_user(p, args, 7))
851 err = -EFAULT;
852
853 return err;
854 }
WRT350N Kernel Patches