ide-taskfile.c revision c9ff9e7b64138d87023b733e618f29a1d58543f7
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 26void ide_tf_dump(const char *s, struct ide_cmd *cmd) 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, cmd->tf.feature, cmd->tf.nsect, 32 cmd->tf.lbal, cmd->tf.lbam, cmd->tf.lbah, 33 cmd->tf.device, cmd->tf.command); 34 printk("%s: hob: nsect 0x%02x lbal 0x%02x lbam 0x%02x lbah 0x%02x\n", 35 s, cmd->hob.nsect, cmd->hob.lbal, cmd->hob.lbam, cmd->hob.lbah); 36#endif 37} 38 39int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf) 40{ 41 struct ide_cmd cmd; 42 43 memset(&cmd, 0, sizeof(cmd)); 44 cmd.tf.nsect = 0x01; 45 if (drive->media == ide_disk) 46 cmd.tf.command = ATA_CMD_ID_ATA; 47 else 48 cmd.tf.command = ATA_CMD_ID_ATAPI; 49 cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE; 50 cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE; 51 cmd.protocol = ATA_PROT_PIO; 52 53 return ide_raw_taskfile(drive, &cmd, buf, 1); 54} 55 56static ide_startstop_t task_no_data_intr(ide_drive_t *); 57static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct ide_cmd *); 58static ide_startstop_t task_pio_intr(ide_drive_t *); 59 60ide_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, cmd); 83 tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS); 84 SELECT_MASK(drive, 0); 85 86 if (cmd->ftf_flags & IDE_FTFLAG_OUT_DATA) { 87 u8 data[2] = { cmd->tf.data, cmd->hob.data }; 88 89 tp_ops->output_data(drive, cmd, data, 2); 90 } 91 92 if (cmd->valid.out.tf & IDE_VALID_DEVICE) { 93 u8 HIHI = (cmd->tf_flags & IDE_TFLAG_LBA48) ? 94 0xE0 : 0xEF; 95 96 if (!(cmd->ftf_flags & IDE_FTFLAG_FLAGGED)) 97 cmd->tf.device &= HIHI; 98 cmd->tf.device |= drive->select; 99 } 100 101 tp_ops->tf_load(drive, &cmd->hob, cmd->valid.out.hob); 102 tp_ops->tf_load(drive, &cmd->tf, cmd->valid.out.tf); 103 } 104 105 switch (cmd->protocol) { 106 case ATA_PROT_PIO: 107 if (cmd->tf_flags & IDE_TFLAG_WRITE) { 108 tp_ops->exec_command(hwif, tf->command); 109 ndelay(400); /* FIXME */ 110 return pre_task_out_intr(drive, cmd); 111 } 112 handler = task_pio_intr; 113 /* fall-through */ 114 case ATA_PROT_NODATA: 115 if (handler == NULL) 116 handler = task_no_data_intr; 117 ide_execute_command(drive, cmd, handler, WAIT_WORSTCASE); 118 return ide_started; 119 case ATA_PROT_DMA: 120 if (ide_dma_prepare(drive, cmd)) 121 return ide_stopped; 122 hwif->expiry = dma_ops->dma_timer_expiry; 123 ide_execute_command(drive, cmd, ide_dma_intr, 2 * WAIT_CMD); 124 dma_ops->dma_start(drive); 125 default: 126 return ide_started; 127 } 128} 129EXPORT_SYMBOL_GPL(do_rw_taskfile); 130 131static ide_startstop_t task_no_data_intr(ide_drive_t *drive) 132{ 133 ide_hwif_t *hwif = drive->hwif; 134 struct ide_cmd *cmd = &hwif->cmd; 135 struct ide_taskfile *tf = &cmd->tf; 136 int custom = (cmd->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) ? 1 : 0; 137 int retries = (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) ? 5 : 1; 138 u8 stat; 139 140 local_irq_enable_in_hardirq(); 141 142 while (1) { 143 stat = hwif->tp_ops->read_status(hwif); 144 if ((stat & ATA_BUSY) == 0 || retries-- == 0) 145 break; 146 udelay(10); 147 }; 148 149 if (!OK_STAT(stat, ATA_DRDY, BAD_STAT)) { 150 if (custom && tf->command == ATA_CMD_SET_MULTI) { 151 drive->mult_req = drive->mult_count = 0; 152 drive->special.b.recalibrate = 1; 153 (void)ide_dump_status(drive, __func__, stat); 154 return ide_stopped; 155 } else if (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) { 156 if ((stat & (ATA_ERR | ATA_DRQ)) == 0) { 157 ide_set_handler(drive, &task_no_data_intr, 158 WAIT_WORSTCASE); 159 return ide_started; 160 } 161 } 162 return ide_error(drive, "task_no_data_intr", stat); 163 } 164 165 if (custom && tf->command == ATA_CMD_SET_MULTI) 166 drive->mult_count = drive->mult_req; 167 168 if (custom == 0 || tf->command == ATA_CMD_IDLEIMMEDIATE || 169 tf->command == ATA_CMD_CHK_POWER) { 170 struct request *rq = hwif->rq; 171 172 if (blk_pm_request(rq)) 173 ide_complete_pm_rq(drive, rq); 174 else 175 ide_finish_cmd(drive, cmd, stat); 176 } 177 178 return ide_stopped; 179} 180 181static u8 wait_drive_not_busy(ide_drive_t *drive) 182{ 183 ide_hwif_t *hwif = drive->hwif; 184 int retries; 185 u8 stat; 186 187 /* 188 * Last sector was transfered, wait until device is ready. This can 189 * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms. 190 */ 191 for (retries = 0; retries < 1000; retries++) { 192 stat = hwif->tp_ops->read_status(hwif); 193 194 if (stat & ATA_BUSY) 195 udelay(10); 196 else 197 break; 198 } 199 200 if (stat & ATA_BUSY) 201 printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); 202 203 return stat; 204} 205 206void ide_pio_bytes(ide_drive_t *drive, struct ide_cmd *cmd, 207 unsigned int write, unsigned int len) 208{ 209 ide_hwif_t *hwif = drive->hwif; 210 struct scatterlist *sg = hwif->sg_table; 211 struct scatterlist *cursg = cmd->cursg; 212 struct page *page; 213 unsigned long flags; 214 unsigned int offset; 215 u8 *buf; 216 217 cursg = cmd->cursg; 218 if (cursg == NULL) 219 cursg = cmd->cursg = sg; 220 221 while (len) { 222 unsigned nr_bytes = min(len, cursg->length - cmd->cursg_ofs); 223 224 if (nr_bytes > PAGE_SIZE) 225 nr_bytes = PAGE_SIZE; 226 227 page = sg_page(cursg); 228 offset = cursg->offset + cmd->cursg_ofs; 229 230 /* get the current page and offset */ 231 page = nth_page(page, (offset >> PAGE_SHIFT)); 232 offset %= PAGE_SIZE; 233 234 if (PageHighMem(page)) 235 local_irq_save(flags); 236 237 buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; 238 239 cmd->nleft -= nr_bytes; 240 cmd->cursg_ofs += nr_bytes; 241 242 if (cmd->cursg_ofs == cursg->length) { 243 cursg = cmd->cursg = sg_next(cmd->cursg); 244 cmd->cursg_ofs = 0; 245 } 246 247 /* do the actual data transfer */ 248 if (write) 249 hwif->tp_ops->output_data(drive, cmd, buf, nr_bytes); 250 else 251 hwif->tp_ops->input_data(drive, cmd, buf, nr_bytes); 252 253 kunmap_atomic(buf, KM_BIO_SRC_IRQ); 254 255 if (PageHighMem(page)) 256 local_irq_restore(flags); 257 258 len -= nr_bytes; 259 } 260} 261EXPORT_SYMBOL_GPL(ide_pio_bytes); 262 263static void ide_pio_datablock(ide_drive_t *drive, struct ide_cmd *cmd, 264 unsigned int write) 265{ 266 unsigned int nr_bytes; 267 268 u8 saved_io_32bit = drive->io_32bit; 269 270 if (cmd->tf_flags & IDE_TFLAG_FS) 271 cmd->rq->errors = 0; 272 273 if (cmd->tf_flags & IDE_TFLAG_IO_16BIT) 274 drive->io_32bit = 0; 275 276 touch_softlockup_watchdog(); 277 278 if (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) 279 nr_bytes = min_t(unsigned, cmd->nleft, drive->mult_count << 9); 280 else 281 nr_bytes = SECTOR_SIZE; 282 283 ide_pio_bytes(drive, cmd, write, nr_bytes); 284 285 drive->io_32bit = saved_io_32bit; 286} 287 288static void ide_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd) 289{ 290 if (cmd->tf_flags & IDE_TFLAG_FS) { 291 int nr_bytes = cmd->nbytes - cmd->nleft; 292 293 if (cmd->protocol == ATA_PROT_PIO && 294 ((cmd->tf_flags & IDE_TFLAG_WRITE) || cmd->nleft == 0)) { 295 if (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) 296 nr_bytes -= drive->mult_count << 9; 297 else 298 nr_bytes -= SECTOR_SIZE; 299 } 300 301 if (nr_bytes > 0) 302 ide_complete_rq(drive, 0, nr_bytes); 303 } 304} 305 306void ide_finish_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 stat) 307{ 308 struct request *rq = drive->hwif->rq; 309 u8 err = ide_read_error(drive); 310 311 ide_complete_cmd(drive, cmd, stat, err); 312 rq->errors = err; 313 ide_complete_rq(drive, err ? -EIO : 0, blk_rq_bytes(rq)); 314} 315 316/* 317 * Handler for command with PIO data phase. 318 */ 319static ide_startstop_t task_pio_intr(ide_drive_t *drive) 320{ 321 ide_hwif_t *hwif = drive->hwif; 322 struct ide_cmd *cmd = &drive->hwif->cmd; 323 u8 stat = hwif->tp_ops->read_status(hwif); 324 u8 write = !!(cmd->tf_flags & IDE_TFLAG_WRITE); 325 326 if (write == 0) { 327 /* Error? */ 328 if (stat & ATA_ERR) 329 goto out_err; 330 331 /* Didn't want any data? Odd. */ 332 if ((stat & ATA_DRQ) == 0) { 333 /* Command all done? */ 334 if (OK_STAT(stat, ATA_DRDY, ATA_BUSY)) 335 goto out_end; 336 337 /* Assume it was a spurious irq */ 338 goto out_wait; 339 } 340 } else { 341 if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) 342 goto out_err; 343 344 /* Deal with unexpected ATA data phase. */ 345 if (((stat & ATA_DRQ) == 0) ^ (cmd->nleft == 0)) 346 goto out_err; 347 } 348 349 if (write && cmd->nleft == 0) 350 goto out_end; 351 352 /* Still data left to transfer. */ 353 ide_pio_datablock(drive, cmd, write); 354 355 /* Are we done? Check status and finish transfer. */ 356 if (write == 0 && cmd->nleft == 0) { 357 stat = wait_drive_not_busy(drive); 358 if (!OK_STAT(stat, 0, BAD_STAT)) 359 goto out_err; 360 361 goto out_end; 362 } 363out_wait: 364 /* Still data left to transfer. */ 365 ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE); 366 return ide_started; 367out_end: 368 if ((cmd->tf_flags & IDE_TFLAG_FS) == 0) 369 ide_finish_cmd(drive, cmd, stat); 370 else 371 ide_complete_rq(drive, 0, cmd->rq->nr_sectors << 9); 372 return ide_stopped; 373out_err: 374 ide_error_cmd(drive, cmd); 375 return ide_error(drive, __func__, stat); 376} 377 378static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, 379 struct ide_cmd *cmd) 380{ 381 ide_startstop_t startstop; 382 383 if (ide_wait_stat(&startstop, drive, ATA_DRQ, 384 drive->bad_wstat, WAIT_DRQ)) { 385 printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", 386 drive->name, 387 (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) ? "MULT" : "", 388 (drive->dev_flags & IDE_DFLAG_LBA48) ? "_EXT" : ""); 389 return startstop; 390 } 391 392 if ((drive->dev_flags & IDE_DFLAG_UNMASK) == 0) 393 local_irq_disable(); 394 395 ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE); 396 397 ide_pio_datablock(drive, cmd, 1); 398 399 return ide_started; 400} 401 402int ide_raw_taskfile(ide_drive_t *drive, struct ide_cmd *cmd, u8 *buf, 403 u16 nsect) 404{ 405 struct request *rq; 406 int error; 407 408 rq = blk_get_request(drive->queue, READ, __GFP_WAIT); 409 rq->cmd_type = REQ_TYPE_ATA_TASKFILE; 410 rq->buffer = buf; 411 412 /* 413 * (ks) We transfer currently only whole sectors. 414 * This is suffient for now. But, it would be great, 415 * if we would find a solution to transfer any size. 416 * To support special commands like READ LONG. 417 */ 418 rq->hard_nr_sectors = rq->nr_sectors = nsect; 419 rq->hard_cur_sectors = rq->current_nr_sectors = nsect; 420 421 if (cmd->tf_flags & IDE_TFLAG_WRITE) 422 rq->cmd_flags |= REQ_RW; 423 424 rq->special = cmd; 425 cmd->rq = rq; 426 427 error = blk_execute_rq(drive->queue, NULL, rq, 0); 428 blk_put_request(rq); 429 430 return error; 431} 432 433EXPORT_SYMBOL(ide_raw_taskfile); 434 435int ide_no_data_taskfile(ide_drive_t *drive, struct ide_cmd *cmd) 436{ 437 cmd->protocol = ATA_PROT_NODATA; 438 439 return ide_raw_taskfile(drive, cmd, NULL, 0); 440} 441EXPORT_SYMBOL_GPL(ide_no_data_taskfile); 442 443#ifdef CONFIG_IDE_TASK_IOCTL 444int ide_taskfile_ioctl(ide_drive_t *drive, unsigned long arg) 445{ 446 ide_task_request_t *req_task; 447 struct ide_cmd cmd; 448 u8 *outbuf = NULL; 449 u8 *inbuf = NULL; 450 u8 *data_buf = NULL; 451 int err = 0; 452 int tasksize = sizeof(struct ide_task_request_s); 453 unsigned int taskin = 0; 454 unsigned int taskout = 0; 455 u16 nsect = 0; 456 char __user *buf = (char __user *)arg; 457 458// printk("IDE Taskfile ...\n"); 459 460 req_task = kzalloc(tasksize, GFP_KERNEL); 461 if (req_task == NULL) return -ENOMEM; 462 if (copy_from_user(req_task, buf, tasksize)) { 463 kfree(req_task); 464 return -EFAULT; 465 } 466 467 taskout = req_task->out_size; 468 taskin = req_task->in_size; 469 470 if (taskin > 65536 || taskout > 65536) { 471 err = -EINVAL; 472 goto abort; 473 } 474 475 if (taskout) { 476 int outtotal = tasksize; 477 outbuf = kzalloc(taskout, GFP_KERNEL); 478 if (outbuf == NULL) { 479 err = -ENOMEM; 480 goto abort; 481 } 482 if (copy_from_user(outbuf, buf + outtotal, taskout)) { 483 err = -EFAULT; 484 goto abort; 485 } 486 } 487 488 if (taskin) { 489 int intotal = tasksize + taskout; 490 inbuf = kzalloc(taskin, GFP_KERNEL); 491 if (inbuf == NULL) { 492 err = -ENOMEM; 493 goto abort; 494 } 495 if (copy_from_user(inbuf, buf + intotal, taskin)) { 496 err = -EFAULT; 497 goto abort; 498 } 499 } 500 501 memset(&cmd, 0, sizeof(cmd)); 502 503 memcpy(&cmd.hob, req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); 504 memcpy(&cmd.tf, req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE); 505 506 cmd.valid.out.tf = IDE_VALID_DEVICE; 507 cmd.valid.in.tf = IDE_VALID_DEVICE | IDE_VALID_IN_TF; 508 cmd.tf_flags = IDE_TFLAG_IO_16BIT; 509 510 if (drive->dev_flags & IDE_DFLAG_LBA48) { 511 cmd.tf_flags |= IDE_TFLAG_LBA48; 512 cmd.valid.in.hob = IDE_VALID_IN_HOB; 513 } 514 515 if (req_task->out_flags.all) { 516 cmd.ftf_flags |= IDE_FTFLAG_FLAGGED; 517 518 if (req_task->out_flags.b.data) 519 cmd.ftf_flags |= IDE_FTFLAG_OUT_DATA; 520 521 if (req_task->out_flags.b.nsector_hob) 522 cmd.valid.out.hob |= IDE_VALID_NSECT; 523 if (req_task->out_flags.b.sector_hob) 524 cmd.valid.out.hob |= IDE_VALID_LBAL; 525 if (req_task->out_flags.b.lcyl_hob) 526 cmd.valid.out.hob |= IDE_VALID_LBAM; 527 if (req_task->out_flags.b.hcyl_hob) 528 cmd.valid.out.hob |= IDE_VALID_LBAH; 529 530 if (req_task->out_flags.b.error_feature) 531 cmd.valid.out.tf |= IDE_VALID_FEATURE; 532 if (req_task->out_flags.b.nsector) 533 cmd.valid.out.tf |= IDE_VALID_NSECT; 534 if (req_task->out_flags.b.sector) 535 cmd.valid.out.tf |= IDE_VALID_LBAL; 536 if (req_task->out_flags.b.lcyl) 537 cmd.valid.out.tf |= IDE_VALID_LBAM; 538 if (req_task->out_flags.b.hcyl) 539 cmd.valid.out.tf |= IDE_VALID_LBAH; 540 } else { 541 cmd.valid.out.tf |= IDE_VALID_OUT_TF; 542 if (cmd.tf_flags & IDE_TFLAG_LBA48) 543 cmd.valid.out.hob |= IDE_VALID_OUT_HOB; 544 } 545 546 if (req_task->in_flags.b.data) 547 cmd.ftf_flags |= IDE_FTFLAG_IN_DATA; 548 549 if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) { 550 /* fixup data phase if needed */ 551 if (req_task->data_phase == TASKFILE_IN_DMAQ || 552 req_task->data_phase == TASKFILE_IN_DMA) 553 cmd.tf_flags |= IDE_TFLAG_WRITE; 554 } 555 556 cmd.protocol = ATA_PROT_DMA; 557 558 switch (req_task->data_phase) { 559 case TASKFILE_MULTI_OUT: 560 if (!drive->mult_count) { 561 /* (hs): give up if multcount is not set */ 562 printk(KERN_ERR "%s: %s Multimode Write " \ 563 "multcount is not set\n", 564 drive->name, __func__); 565 err = -EPERM; 566 goto abort; 567 } 568 cmd.tf_flags |= IDE_TFLAG_MULTI_PIO; 569 /* fall through */ 570 case TASKFILE_OUT: 571 cmd.protocol = ATA_PROT_PIO; 572 /* fall through */ 573 case TASKFILE_OUT_DMAQ: 574 case TASKFILE_OUT_DMA: 575 cmd.tf_flags |= IDE_TFLAG_WRITE; 576 nsect = taskout / SECTOR_SIZE; 577 data_buf = outbuf; 578 break; 579 case TASKFILE_MULTI_IN: 580 if (!drive->mult_count) { 581 /* (hs): give up if multcount is not set */ 582 printk(KERN_ERR "%s: %s Multimode Read failure " \ 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_IN: 591 cmd.protocol = ATA_PROT_PIO; 592 /* fall through */ 593 case TASKFILE_IN_DMAQ: 594 case TASKFILE_IN_DMA: 595 nsect = taskin / SECTOR_SIZE; 596 data_buf = inbuf; 597 break; 598 case TASKFILE_NO_DATA: 599 cmd.protocol = ATA_PROT_NODATA; 600 break; 601 default: 602 err = -EFAULT; 603 goto abort; 604 } 605 606 if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) 607 nsect = 0; 608 else if (!nsect) { 609 nsect = (cmd.hob.nsect << 8) | cmd.tf.nsect; 610 611 if (!nsect) { 612 printk(KERN_ERR "%s: in/out command without data\n", 613 drive->name); 614 err = -EFAULT; 615 goto abort; 616 } 617 } 618 619 err = ide_raw_taskfile(drive, &cmd, data_buf, nsect); 620 621 memcpy(req_task->hob_ports, &cmd.hob, HDIO_DRIVE_HOB_HDR_SIZE - 2); 622 memcpy(req_task->io_ports, &cmd.tf, HDIO_DRIVE_TASK_HDR_SIZE); 623 624 if ((cmd.ftf_flags & IDE_FTFLAG_SET_IN_FLAGS) && 625 req_task->in_flags.all == 0) { 626 req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; 627 if (drive->dev_flags & IDE_DFLAG_LBA48) 628 req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); 629 } 630 631 if (copy_to_user(buf, req_task, tasksize)) { 632 err = -EFAULT; 633 goto abort; 634 } 635 if (taskout) { 636 int outtotal = tasksize; 637 if (copy_to_user(buf + outtotal, outbuf, taskout)) { 638 err = -EFAULT; 639 goto abort; 640 } 641 } 642 if (taskin) { 643 int intotal = tasksize + taskout; 644 if (copy_to_user(buf + intotal, inbuf, taskin)) { 645 err = -EFAULT; 646 goto abort; 647 } 648 } 649abort: 650 kfree(req_task); 651 kfree(outbuf); 652 kfree(inbuf); 653 654// printk("IDE Taskfile ioctl ended. rc = %i\n", err); 655 656 return err; 657} 658#endif 659