ide: add ->dma_timer_expiry method and remove ->dma_exec_cmd one (v2)
[linux-2.6.git] / drivers / ide / ide-taskfile.c
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         struct ide_cmd cmd;
43
44         memset(&cmd, 0, sizeof(cmd));
45         cmd.tf.nsect = 0x01;
46         if (drive->media == ide_disk)
47                 cmd.tf.command = ATA_CMD_ID_ATA;
48         else
49                 cmd.tf.command = ATA_CMD_ID_ATAPI;
50         cmd.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
51         cmd.protocol = ATA_PROT_PIO;
52
53         return ide_raw_taskfile(drive, &cmd, buf, 1);
54 }
55
56 static ide_startstop_t task_no_data_intr(ide_drive_t *);
57 static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct ide_cmd *);
58 static ide_startstop_t task_pio_intr(ide_drive_t *);
59
60 ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *orig_cmd)
61 {
62         ide_hwif_t *hwif = drive->hwif;
63         struct ide_cmd *cmd = &hwif->cmd;
64         struct ide_taskfile *tf = &cmd->tf;
65         ide_handler_t *handler = NULL;
66         const struct ide_tp_ops *tp_ops = hwif->tp_ops;
67         const struct ide_dma_ops *dma_ops = hwif->dma_ops;
68
69         if (orig_cmd->protocol == ATA_PROT_PIO &&
70             (orig_cmd->tf_flags & IDE_TFLAG_MULTI_PIO) &&
71             drive->mult_count == 0) {
72                 printk(KERN_ERR "%s: multimode not set!\n", drive->name);
73                 return ide_stopped;
74         }
75
76         if (orig_cmd->ftf_flags & IDE_FTFLAG_FLAGGED)
77                 orig_cmd->ftf_flags |= IDE_FTFLAG_SET_IN_FLAGS;
78
79         memcpy(cmd, orig_cmd, sizeof(*cmd));
80
81         if ((cmd->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, cmd);
86         }
87
88         switch (cmd->protocol) {
89         case ATA_PROT_PIO:
90                 if (cmd->tf_flags & IDE_TFLAG_WRITE) {
91                         tp_ops->exec_command(hwif, tf->command);
92                         ndelay(400);    /* FIXME */
93                         return pre_task_out_intr(drive, cmd);
94                 }
95                 handler = task_pio_intr;
96                 /* fall-through */
97         case ATA_PROT_NODATA:
98                 if (handler == NULL)
99                         handler = task_no_data_intr;
100                 ide_execute_command(drive, tf->command, handler,
101                                     WAIT_WORSTCASE);
102                 return ide_started;
103         case ATA_PROT_DMA:
104                 if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0 ||
105                     ide_build_sglist(drive, cmd) == 0 ||
106                     dma_ops->dma_setup(drive, cmd))
107                         return ide_stopped;
108                 hwif->expiry = dma_ops->dma_timer_expiry;
109                 ide_execute_command(drive, tf->command, ide_dma_intr,
110                                     2 * WAIT_CMD);
111                 dma_ops->dma_start(drive);
112         default:
113                 return ide_started;
114         }
115 }
116 EXPORT_SYMBOL_GPL(do_rw_taskfile);
117
118 static ide_startstop_t task_no_data_intr(ide_drive_t *drive)
119 {
120         ide_hwif_t *hwif = drive->hwif;
121         struct ide_cmd *cmd = &hwif->cmd;
122         struct ide_taskfile *tf = &cmd->tf;
123         int custom = (cmd->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);
146                                 return ide_started;
147                         }
148                 }
149                 return ide_error(drive, "task_no_data_intr", stat);
150         }
151
152         if (custom && tf->command == ATA_CMD_SET_MULTI)
153                 drive->mult_count = drive->mult_req;
154
155         if (custom == 0 || tf->command == ATA_CMD_IDLEIMMEDIATE ||
156             tf->command == ATA_CMD_CHK_POWER) {
157                 struct request *rq = hwif->rq;
158
159                 if (blk_pm_request(rq))
160                         ide_complete_pm_rq(drive, rq);
161                 else
162                         ide_finish_cmd(drive, cmd, stat);
163         }
164
165         return ide_stopped;
166 }
167
168 static u8 wait_drive_not_busy(ide_drive_t *drive)
169 {
170         ide_hwif_t *hwif = drive->hwif;
171         int retries;
172         u8 stat;
173
174         /*
175          * Last sector was transfered, wait until device is ready.  This can
176          * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms.
177          */
178         for (retries = 0; retries < 1000; retries++) {
179                 stat = hwif->tp_ops->read_status(hwif);
180
181                 if (stat & ATA_BUSY)
182                         udelay(10);
183                 else
184                         break;
185         }
186
187         if (stat & ATA_BUSY)
188                 printk(KERN_ERR "%s: drive still BUSY!\n", drive->name);
189
190         return stat;
191 }
192
193 static void ide_pio_sector(ide_drive_t *drive, struct ide_cmd *cmd,
194                            unsigned int write)
195 {
196         ide_hwif_t *hwif = drive->hwif;
197         struct scatterlist *sg = hwif->sg_table;
198         struct scatterlist *cursg = cmd->cursg;
199         struct page *page;
200 #ifdef CONFIG_HIGHMEM
201         unsigned long flags;
202 #endif
203         unsigned int offset;
204         u8 *buf;
205
206         cursg = cmd->cursg;
207         if (!cursg) {
208                 cursg = sg;
209                 cmd->cursg = sg;
210         }
211
212         page = sg_page(cursg);
213         offset = cursg->offset + cmd->cursg_ofs * SECTOR_SIZE;
214
215         /* get the current page and offset */
216         page = nth_page(page, (offset >> PAGE_SHIFT));
217         offset %= PAGE_SIZE;
218
219 #ifdef CONFIG_HIGHMEM
220         local_irq_save(flags);
221 #endif
222         buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset;
223
224         cmd->nleft--;
225         cmd->cursg_ofs++;
226
227         if ((cmd->cursg_ofs * SECTOR_SIZE) == cursg->length) {
228                 cmd->cursg = sg_next(cmd->cursg);
229                 cmd->cursg_ofs = 0;
230         }
231
232         /* do the actual data transfer */
233         if (write)
234                 hwif->tp_ops->output_data(drive, cmd, buf, SECTOR_SIZE);
235         else
236                 hwif->tp_ops->input_data(drive, cmd, buf, SECTOR_SIZE);
237
238         kunmap_atomic(buf, KM_BIO_SRC_IRQ);
239 #ifdef CONFIG_HIGHMEM
240         local_irq_restore(flags);
241 #endif
242 }
243
244 static void ide_pio_multi(ide_drive_t *drive, struct ide_cmd *cmd,
245                           unsigned int write)
246 {
247         unsigned int nsect;
248
249         nsect = min_t(unsigned int, cmd->nleft, drive->mult_count);
250         while (nsect--)
251                 ide_pio_sector(drive, cmd, write);
252 }
253
254 static void ide_pio_datablock(ide_drive_t *drive, struct ide_cmd *cmd,
255                               unsigned int write)
256 {
257         u8 saved_io_32bit = drive->io_32bit;
258
259         if (cmd->tf_flags & IDE_TFLAG_FS)
260                 cmd->rq->errors = 0;
261
262         if (cmd->tf_flags & IDE_TFLAG_IO_16BIT)
263                 drive->io_32bit = 0;
264
265         touch_softlockup_watchdog();
266
267         if (cmd->tf_flags & IDE_TFLAG_MULTI_PIO)
268                 ide_pio_multi(drive, cmd, write);
269         else
270                 ide_pio_sector(drive, cmd, write);
271
272         drive->io_32bit = saved_io_32bit;
273 }
274
275 static void ide_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd)
276 {
277         if (cmd->tf_flags & IDE_TFLAG_FS) {
278                 int sectors = cmd->nsect - cmd->nleft;
279
280                 if (cmd->protocol == ATA_PROT_PIO &&
281                     ((cmd->tf_flags & IDE_TFLAG_WRITE) || cmd->nleft == 0)) {
282                         if (cmd->tf_flags & IDE_TFLAG_MULTI_PIO)
283                                 sectors -= drive->mult_count;
284                         else
285                                 sectors--;
286                 }
287
288                 if (sectors > 0)
289                         ide_complete_rq(drive, 0, sectors << 9);
290         }
291 }
292
293 void ide_finish_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 stat)
294 {
295         struct request *rq = drive->hwif->rq;
296         u8 err = ide_read_error(drive);
297
298         ide_complete_cmd(drive, cmd, stat, err);
299         rq->errors = err;
300         ide_complete_rq(drive, err ? -EIO : 0, blk_rq_bytes(rq));
301 }
302
303 /*
304  * Handler for command with PIO data phase.
305  */
306 static ide_startstop_t task_pio_intr(ide_drive_t *drive)
307 {
308         ide_hwif_t *hwif = drive->hwif;
309         struct ide_cmd *cmd = &drive->hwif->cmd;
310         u8 stat = hwif->tp_ops->read_status(hwif);
311         u8 write = !!(cmd->tf_flags & IDE_TFLAG_WRITE);
312
313         if (write == 0) {
314                 /* Error? */
315                 if (stat & ATA_ERR)
316                         goto out_err;
317
318                 /* Didn't want any data? Odd. */
319                 if ((stat & ATA_DRQ) == 0) {
320                         /* Command all done? */
321                         if (OK_STAT(stat, ATA_DRDY, ATA_BUSY))
322                                 goto out_end;
323
324                         /* Assume it was a spurious irq */
325                         goto out_wait;
326                 }
327         } else {
328                 if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat))
329                         goto out_err;
330
331                 /* Deal with unexpected ATA data phase. */
332                 if (((stat & ATA_DRQ) == 0) ^ (cmd->nleft == 0))
333                         goto out_err;
334         }
335
336         if (write && cmd->nleft == 0)
337                 goto out_end;
338
339         /* Still data left to transfer. */
340         ide_pio_datablock(drive, cmd, write);
341
342         /* Are we done? Check status and finish transfer. */
343         if (write == 0 && cmd->nleft == 0) {
344                 stat = wait_drive_not_busy(drive);
345                 if (!OK_STAT(stat, 0, BAD_STAT))
346                         goto out_err;
347
348                 goto out_end;
349         }
350 out_wait:
351         /* Still data left to transfer. */
352         ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE);
353         return ide_started;
354 out_end:
355         if ((cmd->tf_flags & IDE_TFLAG_FS) == 0)
356                 ide_finish_cmd(drive, cmd, stat);
357         else
358                 ide_complete_rq(drive, 0, cmd->rq->nr_sectors << 9);
359         return ide_stopped;
360 out_err:
361         ide_error_cmd(drive, cmd);
362         return ide_error(drive, __func__, stat);
363 }
364
365 static ide_startstop_t pre_task_out_intr(ide_drive_t *drive,
366                                          struct ide_cmd *cmd)
367 {
368         ide_startstop_t startstop;
369
370         if (ide_wait_stat(&startstop, drive, ATA_DRQ,
371                           drive->bad_wstat, WAIT_DRQ)) {
372                 printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n",
373                         drive->name,
374                         (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) ? "MULT" : "",
375                         (drive->dev_flags & IDE_DFLAG_LBA48) ? "_EXT" : "");
376                 return startstop;
377         }
378
379         if ((drive->dev_flags & IDE_DFLAG_UNMASK) == 0)
380                 local_irq_disable();
381
382         ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE);
383
384         ide_pio_datablock(drive, cmd, 1);
385
386         return ide_started;
387 }
388
389 int ide_raw_taskfile(ide_drive_t *drive, struct ide_cmd *cmd, u8 *buf,
390                      u16 nsect)
391 {
392         struct request *rq;
393         int error;
394
395         rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
396         rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
397         rq->buffer = buf;
398
399         /*
400          * (ks) We transfer currently only whole sectors.
401          * This is suffient for now.  But, it would be great,
402          * if we would find a solution to transfer any size.
403          * To support special commands like READ LONG.
404          */
405         rq->hard_nr_sectors = rq->nr_sectors = nsect;
406         rq->hard_cur_sectors = rq->current_nr_sectors = nsect;
407
408         if (cmd->tf_flags & IDE_TFLAG_WRITE)
409                 rq->cmd_flags |= REQ_RW;
410
411         rq->special = cmd;
412         cmd->rq = rq;
413
414         error = blk_execute_rq(drive->queue, NULL, rq, 0);
415         blk_put_request(rq);
416
417         return error;
418 }
419
420 EXPORT_SYMBOL(ide_raw_taskfile);
421
422 int ide_no_data_taskfile(ide_drive_t *drive, struct ide_cmd *cmd)
423 {
424         cmd->protocol = ATA_PROT_NODATA;
425
426         return ide_raw_taskfile(drive, cmd, NULL, 0);
427 }
428 EXPORT_SYMBOL_GPL(ide_no_data_taskfile);
429
430 #ifdef CONFIG_IDE_TASK_IOCTL
431 int ide_taskfile_ioctl(ide_drive_t *drive, unsigned long arg)
432 {
433         ide_task_request_t      *req_task;
434         struct ide_cmd          cmd;
435         u8 *outbuf              = NULL;
436         u8 *inbuf               = NULL;
437         u8 *data_buf            = NULL;
438         int err                 = 0;
439         int tasksize            = sizeof(struct ide_task_request_s);
440         unsigned int taskin     = 0;
441         unsigned int taskout    = 0;
442         u16 nsect               = 0;
443         char __user *buf = (char __user *)arg;
444
445 //      printk("IDE Taskfile ...\n");
446
447         req_task = kzalloc(tasksize, GFP_KERNEL);
448         if (req_task == NULL) return -ENOMEM;
449         if (copy_from_user(req_task, buf, tasksize)) {
450                 kfree(req_task);
451                 return -EFAULT;
452         }
453
454         taskout = req_task->out_size;
455         taskin  = req_task->in_size;
456         
457         if (taskin > 65536 || taskout > 65536) {
458                 err = -EINVAL;
459                 goto abort;
460         }
461
462         if (taskout) {
463                 int outtotal = tasksize;
464                 outbuf = kzalloc(taskout, GFP_KERNEL);
465                 if (outbuf == NULL) {
466                         err = -ENOMEM;
467                         goto abort;
468                 }
469                 if (copy_from_user(outbuf, buf + outtotal, taskout)) {
470                         err = -EFAULT;
471                         goto abort;
472                 }
473         }
474
475         if (taskin) {
476                 int intotal = tasksize + taskout;
477                 inbuf = kzalloc(taskin, GFP_KERNEL);
478                 if (inbuf == NULL) {
479                         err = -ENOMEM;
480                         goto abort;
481                 }
482                 if (copy_from_user(inbuf, buf + intotal, taskin)) {
483                         err = -EFAULT;
484                         goto abort;
485                 }
486         }
487
488         memset(&cmd, 0, sizeof(cmd));
489
490         memcpy(&cmd.tf_array[0], req_task->hob_ports,
491                HDIO_DRIVE_HOB_HDR_SIZE - 2);
492         memcpy(&cmd.tf_array[6], req_task->io_ports,
493                HDIO_DRIVE_TASK_HDR_SIZE);
494
495         cmd.tf_flags   = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE |
496                          IDE_TFLAG_IN_TF;
497
498         if (drive->dev_flags & IDE_DFLAG_LBA48)
499                 cmd.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB);
500
501         if (req_task->out_flags.all) {
502                 cmd.ftf_flags |= IDE_FTFLAG_FLAGGED;
503
504                 if (req_task->out_flags.b.data)
505                         cmd.ftf_flags |= IDE_FTFLAG_OUT_DATA;
506
507                 if (req_task->out_flags.b.nsector_hob)
508                         cmd.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT;
509                 if (req_task->out_flags.b.sector_hob)
510                         cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL;
511                 if (req_task->out_flags.b.lcyl_hob)
512                         cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM;
513                 if (req_task->out_flags.b.hcyl_hob)
514                         cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH;
515
516                 if (req_task->out_flags.b.error_feature)
517                         cmd.tf_flags |= IDE_TFLAG_OUT_FEATURE;
518                 if (req_task->out_flags.b.nsector)
519                         cmd.tf_flags |= IDE_TFLAG_OUT_NSECT;
520                 if (req_task->out_flags.b.sector)
521                         cmd.tf_flags |= IDE_TFLAG_OUT_LBAL;
522                 if (req_task->out_flags.b.lcyl)
523                         cmd.tf_flags |= IDE_TFLAG_OUT_LBAM;
524                 if (req_task->out_flags.b.hcyl)
525                         cmd.tf_flags |= IDE_TFLAG_OUT_LBAH;
526         } else {
527                 cmd.tf_flags |= IDE_TFLAG_OUT_TF;
528                 if (cmd.tf_flags & IDE_TFLAG_LBA48)
529                         cmd.tf_flags |= IDE_TFLAG_OUT_HOB;
530         }
531
532         if (req_task->in_flags.b.data)
533                 cmd.ftf_flags |= IDE_FTFLAG_IN_DATA;
534
535         if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) {
536                 /* fixup data phase if needed */
537                 if (req_task->data_phase == TASKFILE_IN_DMAQ ||
538                     req_task->data_phase == TASKFILE_IN_DMA)
539                         cmd.tf_flags |= IDE_TFLAG_WRITE;
540         }
541
542         cmd.protocol = ATA_PROT_DMA;
543
544         switch (req_task->data_phase) {
545                 case TASKFILE_MULTI_OUT:
546                         if (!drive->mult_count) {
547                                 /* (hs): give up if multcount is not set */
548                                 printk(KERN_ERR "%s: %s Multimode Write " \
549                                         "multcount is not set\n",
550                                         drive->name, __func__);
551                                 err = -EPERM;
552                                 goto abort;
553                         }
554                         cmd.tf_flags |= IDE_TFLAG_MULTI_PIO;
555                         /* fall through */
556                 case TASKFILE_OUT:
557                         cmd.protocol = ATA_PROT_PIO;
558                         /* fall through */
559                 case TASKFILE_OUT_DMAQ:
560                 case TASKFILE_OUT_DMA:
561                         cmd.tf_flags |= IDE_TFLAG_WRITE;
562                         nsect = taskout / SECTOR_SIZE;
563                         data_buf = outbuf;
564                         break;
565                 case TASKFILE_MULTI_IN:
566                         if (!drive->mult_count) {
567                                 /* (hs): give up if multcount is not set */
568                                 printk(KERN_ERR "%s: %s Multimode Read failure " \
569                                         "multcount is not set\n",
570                                         drive->name, __func__);
571                                 err = -EPERM;
572                                 goto abort;
573                         }
574                         cmd.tf_flags |= IDE_TFLAG_MULTI_PIO;
575                         /* fall through */
576                 case TASKFILE_IN:
577                         cmd.protocol = ATA_PROT_PIO;
578                         /* fall through */
579                 case TASKFILE_IN_DMAQ:
580                 case TASKFILE_IN_DMA:
581                         nsect = taskin / SECTOR_SIZE;
582                         data_buf = inbuf;
583                         break;
584                 case TASKFILE_NO_DATA:
585                         cmd.protocol = ATA_PROT_NODATA;
586                         break;
587                 default:
588                         err = -EFAULT;
589                         goto abort;
590         }
591
592         if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA)
593                 nsect = 0;
594         else if (!nsect) {
595                 nsect = (cmd.tf.hob_nsect << 8) | cmd.tf.nsect;
596
597                 if (!nsect) {
598                         printk(KERN_ERR "%s: in/out command without data\n",
599                                         drive->name);
600                         err = -EFAULT;
601                         goto abort;
602                 }
603         }
604
605         err = ide_raw_taskfile(drive, &cmd, data_buf, nsect);
606
607         memcpy(req_task->hob_ports, &cmd.tf_array[0],
608                HDIO_DRIVE_HOB_HDR_SIZE - 2);
609         memcpy(req_task->io_ports, &cmd.tf_array[6],
610                HDIO_DRIVE_TASK_HDR_SIZE);
611
612         if ((cmd.ftf_flags & IDE_FTFLAG_SET_IN_FLAGS) &&
613             req_task->in_flags.all == 0) {
614                 req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS;
615                 if (drive->dev_flags & IDE_DFLAG_LBA48)
616                         req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8);
617         }
618
619         if (copy_to_user(buf, req_task, tasksize)) {
620                 err = -EFAULT;
621                 goto abort;
622         }
623         if (taskout) {
624                 int outtotal = tasksize;
625                 if (copy_to_user(buf + outtotal, outbuf, taskout)) {
626                         err = -EFAULT;
627                         goto abort;
628                 }
629         }
630         if (taskin) {
631                 int intotal = tasksize + taskout;
632                 if (copy_to_user(buf + intotal, inbuf, taskin)) {
633                         err = -EFAULT;
634                         goto abort;
635                 }
636         }
637 abort:
638         kfree(req_task);
639         kfree(outbuf);
640         kfree(inbuf);
641
642 //      printk("IDE Taskfile ioctl ended. rc = %i\n", err);
643
644         return err;
645 }
646 #endif