ide-taskfile.c revision f8c4bd0ab2b8783c0f080957781e9f70bee48eaa
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 36void ide_tf_dump(const char *s, struct ide_taskfile *tf) 37{ 38#ifdef DEBUG 39 printk("%s: tf: feat 0x%02x nsect 0x%02x lbal 0x%02x " 40 "lbam 0x%02x lbah 0x%02x dev 0x%02x cmd 0x%02x\n", 41 s, tf->feature, tf->nsect, tf->lbal, 42 tf->lbam, tf->lbah, tf->device, tf->command); 43 printk("%s: hob: nsect 0x%02x lbal 0x%02x " 44 "lbam 0x%02x lbah 0x%02x\n", 45 s, tf->hob_nsect, tf->hob_lbal, 46 tf->hob_lbam, tf->hob_lbah); 47#endif 48} 49 50int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf) 51{ 52 ide_task_t args; 53 54 memset(&args, 0, sizeof(ide_task_t)); 55 args.tf.nsect = 0x01; 56 if (drive->media == ide_disk) 57 args.tf.command = WIN_IDENTIFY; 58 else 59 args.tf.command = WIN_PIDENTIFY; 60 args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; 61 args.data_phase = TASKFILE_IN; 62 return ide_raw_taskfile(drive, &args, buf, 1); 63} 64 65static int inline task_dma_ok(ide_task_t *task) 66{ 67 if (blk_fs_request(task->rq) || (task->tf_flags & IDE_TFLAG_FLAGGED)) 68 return 1; 69 70 switch (task->tf.command) { 71 case WIN_WRITEDMA_ONCE: 72 case WIN_WRITEDMA: 73 case WIN_WRITEDMA_EXT: 74 case WIN_READDMA_ONCE: 75 case WIN_READDMA: 76 case WIN_READDMA_EXT: 77 case WIN_IDENTIFY_DMA: 78 return 1; 79 } 80 81 return 0; 82} 83 84static ide_startstop_t task_no_data_intr(ide_drive_t *); 85static ide_startstop_t set_geometry_intr(ide_drive_t *); 86static ide_startstop_t recal_intr(ide_drive_t *); 87static ide_startstop_t set_multmode_intr(ide_drive_t *); 88static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *); 89static ide_startstop_t task_in_intr(ide_drive_t *); 90 91ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task) 92{ 93 ide_hwif_t *hwif = HWIF(drive); 94 struct ide_taskfile *tf = &task->tf; 95 ide_handler_t *handler = NULL; 96 const struct ide_dma_ops *dma_ops = hwif->dma_ops; 97 98 if (task->data_phase == TASKFILE_MULTI_IN || 99 task->data_phase == TASKFILE_MULTI_OUT) { 100 if (!drive->mult_count) { 101 printk(KERN_ERR "%s: multimode not set!\n", 102 drive->name); 103 return ide_stopped; 104 } 105 } 106 107 if (task->tf_flags & IDE_TFLAG_FLAGGED) 108 task->tf_flags |= IDE_TFLAG_FLAGGED_SET_IN_FLAGS; 109 110 if ((task->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) { 111 ide_tf_dump(drive->name, tf); 112 ide_set_irq(drive, 1); 113 SELECT_MASK(drive, 0); 114 hwif->tf_load(drive, task); 115 } 116 117 switch (task->data_phase) { 118 case TASKFILE_MULTI_OUT: 119 case TASKFILE_OUT: 120 hwif->OUTBSYNC(hwif, tf->command, hwif->io_ports.command_addr); 121 ndelay(400); /* FIXME */ 122 return pre_task_out_intr(drive, task->rq); 123 case TASKFILE_MULTI_IN: 124 case TASKFILE_IN: 125 handler = task_in_intr; 126 /* fall-through */ 127 case TASKFILE_NO_DATA: 128 if (handler == NULL) 129 handler = task_no_data_intr; 130 /* WIN_{SPECIFY,RESTORE,SETMULT} use custom handlers */ 131 if (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) { 132 switch (tf->command) { 133 case WIN_SPECIFY: handler = set_geometry_intr; break; 134 case WIN_RESTORE: handler = recal_intr; break; 135 case WIN_SETMULT: handler = set_multmode_intr; break; 136 } 137 } 138 ide_execute_command(drive, tf->command, handler, 139 WAIT_WORSTCASE, NULL); 140 return ide_started; 141 default: 142 if (task_dma_ok(task) == 0 || drive->using_dma == 0 || 143 dma_ops->dma_setup(drive)) 144 return ide_stopped; 145 dma_ops->dma_exec_cmd(drive, tf->command); 146 dma_ops->dma_start(drive); 147 return ide_started; 148 } 149} 150EXPORT_SYMBOL_GPL(do_rw_taskfile); 151 152/* 153 * set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd. 154 */ 155static ide_startstop_t set_multmode_intr(ide_drive_t *drive) 156{ 157 u8 stat = ide_read_status(drive); 158 159 if (OK_STAT(stat, READY_STAT, BAD_STAT)) 160 drive->mult_count = drive->mult_req; 161 else { 162 drive->mult_req = drive->mult_count = 0; 163 drive->special.b.recalibrate = 1; 164 (void) ide_dump_status(drive, "set_multmode", stat); 165 } 166 return ide_stopped; 167} 168 169/* 170 * set_geometry_intr() is invoked on completion of a WIN_SPECIFY cmd. 171 */ 172static ide_startstop_t set_geometry_intr(ide_drive_t *drive) 173{ 174 int retries = 5; 175 u8 stat; 176 177 while (((stat = ide_read_status(drive)) & BUSY_STAT) && retries--) 178 udelay(10); 179 180 if (OK_STAT(stat, READY_STAT, BAD_STAT)) 181 return ide_stopped; 182 183 if (stat & (ERR_STAT|DRQ_STAT)) 184 return ide_error(drive, "set_geometry_intr", stat); 185 186 BUG_ON(HWGROUP(drive)->handler != NULL); 187 ide_set_handler(drive, &set_geometry_intr, WAIT_WORSTCASE, NULL); 188 return ide_started; 189} 190 191/* 192 * recal_intr() is invoked on completion of a WIN_RESTORE (recalibrate) cmd. 193 */ 194static ide_startstop_t recal_intr(ide_drive_t *drive) 195{ 196 u8 stat = ide_read_status(drive); 197 198 if (!OK_STAT(stat, READY_STAT, BAD_STAT)) 199 return ide_error(drive, "recal_intr", stat); 200 return ide_stopped; 201} 202 203/* 204 * Handler for commands without a data phase 205 */ 206static ide_startstop_t task_no_data_intr(ide_drive_t *drive) 207{ 208 ide_task_t *args = HWGROUP(drive)->rq->special; 209 u8 stat; 210 211 local_irq_enable_in_hardirq(); 212 stat = ide_read_status(drive); 213 214 if (!OK_STAT(stat, READY_STAT, BAD_STAT)) 215 return ide_error(drive, "task_no_data_intr", stat); 216 /* calls ide_end_drive_cmd */ 217 218 if (args) 219 ide_end_drive_cmd(drive, stat, ide_read_error(drive)); 220 221 return ide_stopped; 222} 223 224static u8 wait_drive_not_busy(ide_drive_t *drive) 225{ 226 int retries; 227 u8 stat; 228 229 /* 230 * Last sector was transfered, wait until device is ready. This can 231 * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms. 232 */ 233 for (retries = 0; retries < 1000; retries++) { 234 stat = ide_read_status(drive); 235 236 if (stat & BUSY_STAT) 237 udelay(10); 238 else 239 break; 240 } 241 242 if (stat & BUSY_STAT) 243 printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); 244 245 return stat; 246} 247 248static void ide_pio_sector(ide_drive_t *drive, struct request *rq, 249 unsigned int write) 250{ 251 ide_hwif_t *hwif = drive->hwif; 252 struct scatterlist *sg = hwif->sg_table; 253 struct scatterlist *cursg = hwif->cursg; 254 struct page *page; 255#ifdef CONFIG_HIGHMEM 256 unsigned long flags; 257#endif 258 unsigned int offset; 259 u8 *buf; 260 261 cursg = hwif->cursg; 262 if (!cursg) { 263 cursg = sg; 264 hwif->cursg = sg; 265 } 266 267 page = sg_page(cursg); 268 offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE; 269 270 /* get the current page and offset */ 271 page = nth_page(page, (offset >> PAGE_SHIFT)); 272 offset %= PAGE_SIZE; 273 274#ifdef CONFIG_HIGHMEM 275 local_irq_save(flags); 276#endif 277 buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; 278 279 hwif->nleft--; 280 hwif->cursg_ofs++; 281 282 if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) { 283 hwif->cursg = sg_next(hwif->cursg); 284 hwif->cursg_ofs = 0; 285 } 286 287 /* do the actual data transfer */ 288 if (write) 289 hwif->output_data(drive, rq, buf, SECTOR_SIZE); 290 else 291 hwif->input_data(drive, rq, buf, SECTOR_SIZE); 292 293 kunmap_atomic(buf, KM_BIO_SRC_IRQ); 294#ifdef CONFIG_HIGHMEM 295 local_irq_restore(flags); 296#endif 297} 298 299static void ide_pio_multi(ide_drive_t *drive, struct request *rq, 300 unsigned int write) 301{ 302 unsigned int nsect; 303 304 nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count); 305 while (nsect--) 306 ide_pio_sector(drive, rq, write); 307} 308 309static void ide_pio_datablock(ide_drive_t *drive, struct request *rq, 310 unsigned int write) 311{ 312 u8 saved_io_32bit = drive->io_32bit; 313 314 if (rq->bio) /* fs request */ 315 rq->errors = 0; 316 317 if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { 318 ide_task_t *task = rq->special; 319 320 if (task->tf_flags & IDE_TFLAG_IO_16BIT) 321 drive->io_32bit = 0; 322 } 323 324 touch_softlockup_watchdog(); 325 326 switch (drive->hwif->data_phase) { 327 case TASKFILE_MULTI_IN: 328 case TASKFILE_MULTI_OUT: 329 ide_pio_multi(drive, rq, write); 330 break; 331 default: 332 ide_pio_sector(drive, rq, write); 333 break; 334 } 335 336 drive->io_32bit = saved_io_32bit; 337} 338 339static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq, 340 const char *s, u8 stat) 341{ 342 if (rq->bio) { 343 ide_hwif_t *hwif = drive->hwif; 344 int sectors = hwif->nsect - hwif->nleft; 345 346 switch (hwif->data_phase) { 347 case TASKFILE_IN: 348 if (hwif->nleft) 349 break; 350 /* fall through */ 351 case TASKFILE_OUT: 352 sectors--; 353 break; 354 case TASKFILE_MULTI_IN: 355 if (hwif->nleft) 356 break; 357 /* fall through */ 358 case TASKFILE_MULTI_OUT: 359 sectors -= drive->mult_count; 360 default: 361 break; 362 } 363 364 if (sectors > 0) { 365 ide_driver_t *drv; 366 367 drv = *(ide_driver_t **)rq->rq_disk->private_data; 368 drv->end_request(drive, 1, sectors); 369 } 370 } 371 return ide_error(drive, s, stat); 372} 373 374void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat) 375{ 376 if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { 377 u8 err = ide_read_error(drive); 378 379 ide_end_drive_cmd(drive, stat, err); 380 return; 381 } 382 383 if (rq->rq_disk) { 384 ide_driver_t *drv; 385 386 drv = *(ide_driver_t **)rq->rq_disk->private_data;; 387 drv->end_request(drive, 1, rq->nr_sectors); 388 } else 389 ide_end_request(drive, 1, rq->nr_sectors); 390} 391 392/* 393 * We got an interrupt on a task_in case, but no errors and no DRQ. 394 * 395 * It might be a spurious irq (shared irq), but it might be a 396 * command that had no output. 397 */ 398static ide_startstop_t task_in_unexpected(ide_drive_t *drive, struct request *rq, u8 stat) 399{ 400 /* Command all done? */ 401 if (OK_STAT(stat, READY_STAT, BUSY_STAT)) { 402 task_end_request(drive, rq, stat); 403 return ide_stopped; 404 } 405 406 /* Assume it was a spurious irq */ 407 ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); 408 return ide_started; 409} 410 411/* 412 * Handler for command with PIO data-in phase (Read/Read Multiple). 413 */ 414static ide_startstop_t task_in_intr(ide_drive_t *drive) 415{ 416 ide_hwif_t *hwif = drive->hwif; 417 struct request *rq = HWGROUP(drive)->rq; 418 u8 stat = ide_read_status(drive); 419 420 /* Error? */ 421 if (stat & ERR_STAT) 422 return task_error(drive, rq, __func__, stat); 423 424 /* Didn't want any data? Odd. */ 425 if (!(stat & DRQ_STAT)) 426 return task_in_unexpected(drive, rq, stat); 427 428 ide_pio_datablock(drive, rq, 0); 429 430 /* Are we done? Check status and finish transfer. */ 431 if (!hwif->nleft) { 432 stat = wait_drive_not_busy(drive); 433 if (!OK_STAT(stat, 0, BAD_STAT)) 434 return task_error(drive, rq, __func__, stat); 435 task_end_request(drive, rq, stat); 436 return ide_stopped; 437 } 438 439 /* Still data left to transfer. */ 440 ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); 441 442 return ide_started; 443} 444 445/* 446 * Handler for command with PIO data-out phase (Write/Write Multiple). 447 */ 448static ide_startstop_t task_out_intr (ide_drive_t *drive) 449{ 450 ide_hwif_t *hwif = drive->hwif; 451 struct request *rq = HWGROUP(drive)->rq; 452 u8 stat = ide_read_status(drive); 453 454 if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) 455 return task_error(drive, rq, __func__, stat); 456 457 /* Deal with unexpected ATA data phase. */ 458 if (((stat & DRQ_STAT) == 0) ^ !hwif->nleft) 459 return task_error(drive, rq, __func__, stat); 460 461 if (!hwif->nleft) { 462 task_end_request(drive, rq, stat); 463 return ide_stopped; 464 } 465 466 /* Still data left to transfer. */ 467 ide_pio_datablock(drive, rq, 1); 468 ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); 469 470 return ide_started; 471} 472 473static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq) 474{ 475 ide_startstop_t startstop; 476 477 if (ide_wait_stat(&startstop, drive, DRQ_STAT, 478 drive->bad_wstat, WAIT_DRQ)) { 479 printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", 480 drive->name, 481 drive->hwif->data_phase ? "MULT" : "", 482 drive->addressing ? "_EXT" : ""); 483 return startstop; 484 } 485 486 if (!drive->unmask) 487 local_irq_disable(); 488 489 ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); 490 ide_pio_datablock(drive, rq, 1); 491 492 return ide_started; 493} 494 495int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect) 496{ 497 struct request *rq; 498 int error; 499 500 rq = blk_get_request(drive->queue, READ, __GFP_WAIT); 501 rq->cmd_type = REQ_TYPE_ATA_TASKFILE; 502 rq->buffer = buf; 503 504 /* 505 * (ks) We transfer currently only whole sectors. 506 * This is suffient for now. But, it would be great, 507 * if we would find a solution to transfer any size. 508 * To support special commands like READ LONG. 509 */ 510 rq->hard_nr_sectors = rq->nr_sectors = nsect; 511 rq->hard_cur_sectors = rq->current_nr_sectors = nsect; 512 513 if (task->tf_flags & IDE_TFLAG_WRITE) 514 rq->cmd_flags |= REQ_RW; 515 516 rq->special = task; 517 task->rq = rq; 518 519 error = blk_execute_rq(drive->queue, NULL, rq, 0); 520 blk_put_request(rq); 521 522 return error; 523} 524 525EXPORT_SYMBOL(ide_raw_taskfile); 526 527int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task) 528{ 529 task->data_phase = TASKFILE_NO_DATA; 530 531 return ide_raw_taskfile(drive, task, NULL, 0); 532} 533EXPORT_SYMBOL_GPL(ide_no_data_taskfile); 534 535#ifdef CONFIG_IDE_TASK_IOCTL 536int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) 537{ 538 ide_task_request_t *req_task; 539 ide_task_t args; 540 u8 *outbuf = NULL; 541 u8 *inbuf = NULL; 542 u8 *data_buf = NULL; 543 int err = 0; 544 int tasksize = sizeof(struct ide_task_request_s); 545 unsigned int taskin = 0; 546 unsigned int taskout = 0; 547 u16 nsect = 0; 548 char __user *buf = (char __user *)arg; 549 550// printk("IDE Taskfile ...\n"); 551 552 req_task = kzalloc(tasksize, GFP_KERNEL); 553 if (req_task == NULL) return -ENOMEM; 554 if (copy_from_user(req_task, buf, tasksize)) { 555 kfree(req_task); 556 return -EFAULT; 557 } 558 559 taskout = req_task->out_size; 560 taskin = req_task->in_size; 561 562 if (taskin > 65536 || taskout > 65536) { 563 err = -EINVAL; 564 goto abort; 565 } 566 567 if (taskout) { 568 int outtotal = tasksize; 569 outbuf = kzalloc(taskout, GFP_KERNEL); 570 if (outbuf == NULL) { 571 err = -ENOMEM; 572 goto abort; 573 } 574 if (copy_from_user(outbuf, buf + outtotal, taskout)) { 575 err = -EFAULT; 576 goto abort; 577 } 578 } 579 580 if (taskin) { 581 int intotal = tasksize + taskout; 582 inbuf = kzalloc(taskin, GFP_KERNEL); 583 if (inbuf == NULL) { 584 err = -ENOMEM; 585 goto abort; 586 } 587 if (copy_from_user(inbuf, buf + intotal, taskin)) { 588 err = -EFAULT; 589 goto abort; 590 } 591 } 592 593 memset(&args, 0, sizeof(ide_task_t)); 594 595 memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); 596 memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE); 597 598 args.data_phase = req_task->data_phase; 599 600 args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE | 601 IDE_TFLAG_IN_TF; 602 if (drive->addressing == 1) 603 args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB); 604 605 if (req_task->out_flags.all) { 606 args.tf_flags |= IDE_TFLAG_FLAGGED; 607 608 if (req_task->out_flags.b.data) 609 args.tf_flags |= IDE_TFLAG_OUT_DATA; 610 611 if (req_task->out_flags.b.nsector_hob) 612 args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; 613 if (req_task->out_flags.b.sector_hob) 614 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; 615 if (req_task->out_flags.b.lcyl_hob) 616 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; 617 if (req_task->out_flags.b.hcyl_hob) 618 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; 619 620 if (req_task->out_flags.b.error_feature) 621 args.tf_flags |= IDE_TFLAG_OUT_FEATURE; 622 if (req_task->out_flags.b.nsector) 623 args.tf_flags |= IDE_TFLAG_OUT_NSECT; 624 if (req_task->out_flags.b.sector) 625 args.tf_flags |= IDE_TFLAG_OUT_LBAL; 626 if (req_task->out_flags.b.lcyl) 627 args.tf_flags |= IDE_TFLAG_OUT_LBAM; 628 if (req_task->out_flags.b.hcyl) 629 args.tf_flags |= IDE_TFLAG_OUT_LBAH; 630 } else { 631 args.tf_flags |= IDE_TFLAG_OUT_TF; 632 if (args.tf_flags & IDE_TFLAG_LBA48) 633 args.tf_flags |= IDE_TFLAG_OUT_HOB; 634 } 635 636 if (req_task->in_flags.b.data) 637 args.tf_flags |= IDE_TFLAG_IN_DATA; 638 639 switch(req_task->data_phase) { 640 case TASKFILE_MULTI_OUT: 641 if (!drive->mult_count) { 642 /* (hs): give up if multcount is not set */ 643 printk(KERN_ERR "%s: %s Multimode Write " \ 644 "multcount is not set\n", 645 drive->name, __func__); 646 err = -EPERM; 647 goto abort; 648 } 649 /* fall through */ 650 case TASKFILE_OUT: 651 /* fall through */ 652 case TASKFILE_OUT_DMAQ: 653 case TASKFILE_OUT_DMA: 654 nsect = taskout / SECTOR_SIZE; 655 data_buf = outbuf; 656 break; 657 case TASKFILE_MULTI_IN: 658 if (!drive->mult_count) { 659 /* (hs): give up if multcount is not set */ 660 printk(KERN_ERR "%s: %s Multimode Read failure " \ 661 "multcount is not set\n", 662 drive->name, __func__); 663 err = -EPERM; 664 goto abort; 665 } 666 /* fall through */ 667 case TASKFILE_IN: 668 /* fall through */ 669 case TASKFILE_IN_DMAQ: 670 case TASKFILE_IN_DMA: 671 nsect = taskin / SECTOR_SIZE; 672 data_buf = inbuf; 673 break; 674 case TASKFILE_NO_DATA: 675 break; 676 default: 677 err = -EFAULT; 678 goto abort; 679 } 680 681 if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) 682 nsect = 0; 683 else if (!nsect) { 684 nsect = (args.tf.hob_nsect << 8) | args.tf.nsect; 685 686 if (!nsect) { 687 printk(KERN_ERR "%s: in/out command without data\n", 688 drive->name); 689 err = -EFAULT; 690 goto abort; 691 } 692 } 693 694 if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) 695 args.tf_flags |= IDE_TFLAG_WRITE; 696 697 err = ide_raw_taskfile(drive, &args, data_buf, nsect); 698 699 memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2); 700 memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE); 701 702 if ((args.tf_flags & IDE_TFLAG_FLAGGED_SET_IN_FLAGS) && 703 req_task->in_flags.all == 0) { 704 req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; 705 if (drive->addressing == 1) 706 req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); 707 } 708 709 if (copy_to_user(buf, req_task, tasksize)) { 710 err = -EFAULT; 711 goto abort; 712 } 713 if (taskout) { 714 int outtotal = tasksize; 715 if (copy_to_user(buf + outtotal, outbuf, taskout)) { 716 err = -EFAULT; 717 goto abort; 718 } 719 } 720 if (taskin) { 721 int intotal = tasksize + taskout; 722 if (copy_to_user(buf + intotal, inbuf, taskin)) { 723 err = -EFAULT; 724 goto abort; 725 } 726 } 727abort: 728 kfree(req_task); 729 kfree(outbuf); 730 kfree(inbuf); 731 732// printk("IDE Taskfile ioctl ended. rc = %i\n", err); 733 734 return err; 735} 736#endif 737 738int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) 739{ 740 u8 *buf = NULL; 741 int bufsize = 0, err = 0; 742 u8 args[4], xfer_rate = 0; 743 ide_task_t tfargs; 744 struct ide_taskfile *tf = &tfargs.tf; 745 struct hd_driveid *id = drive->id; 746 747 if (NULL == (void *) arg) { 748 struct request *rq; 749 750 rq = blk_get_request(drive->queue, READ, __GFP_WAIT); 751 rq->cmd_type = REQ_TYPE_ATA_TASKFILE; 752 err = blk_execute_rq(drive->queue, NULL, rq, 0); 753 blk_put_request(rq); 754 755 return err; 756 } 757 758 if (copy_from_user(args, (void __user *)arg, 4)) 759 return -EFAULT; 760 761 memset(&tfargs, 0, sizeof(ide_task_t)); 762 tf->feature = args[2]; 763 if (args[0] == WIN_SMART) { 764 tf->nsect = args[3]; 765 tf->lbal = args[1]; 766 tf->lbam = 0x4f; 767 tf->lbah = 0xc2; 768 tfargs.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_IN_NSECT; 769 } else { 770 tf->nsect = args[1]; 771 tfargs.tf_flags = IDE_TFLAG_OUT_FEATURE | 772 IDE_TFLAG_OUT_NSECT | IDE_TFLAG_IN_NSECT; 773 } 774 tf->command = args[0]; 775 tfargs.data_phase = args[3] ? TASKFILE_IN : TASKFILE_NO_DATA; 776 777 if (args[3]) { 778 tfargs.tf_flags |= IDE_TFLAG_IO_16BIT; 779 bufsize = SECTOR_WORDS * 4 * args[3]; 780 buf = kzalloc(bufsize, GFP_KERNEL); 781 if (buf == NULL) 782 return -ENOMEM; 783 } 784 785 if (tf->command == WIN_SETFEATURES && 786 tf->feature == SETFEATURES_XFER && 787 tf->nsect >= XFER_SW_DMA_0 && 788 (id->dma_ultra || id->dma_mword || id->dma_1word)) { 789 xfer_rate = args[1]; 790 if (tf->nsect > XFER_UDMA_2 && !eighty_ninty_three(drive)) { 791 printk(KERN_WARNING "%s: UDMA speeds >UDMA33 cannot " 792 "be set\n", drive->name); 793 goto abort; 794 } 795 } 796 797 err = ide_raw_taskfile(drive, &tfargs, buf, args[3]); 798 799 args[0] = tf->status; 800 args[1] = tf->error; 801 args[2] = tf->nsect; 802 803 if (!err && xfer_rate) { 804 /* active-retuning-calls future */ 805 ide_set_xfer_rate(drive, xfer_rate); 806 ide_driveid_update(drive); 807 } 808abort: 809 if (copy_to_user((void __user *)arg, &args, 4)) 810 err = -EFAULT; 811 if (buf) { 812 if (copy_to_user((void __user *)(arg + 4), buf, bufsize)) 813 err = -EFAULT; 814 kfree(buf); 815 } 816 return err; 817} 818 819int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) 820{ 821 void __user *p = (void __user *)arg; 822 int err = 0; 823 u8 args[7]; 824 ide_task_t task; 825 826 if (copy_from_user(args, p, 7)) 827 return -EFAULT; 828 829 memset(&task, 0, sizeof(task)); 830 memcpy(&task.tf_array[7], &args[1], 6); 831 task.tf.command = args[0]; 832 task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; 833 834 err = ide_no_data_taskfile(drive, &task); 835 836 args[0] = task.tf.command; 837 memcpy(&args[1], &task.tf_array[7], 6); 838 839 if (copy_to_user(p, args, 7)) 840 err = -EFAULT; 841 842 return err; 843} 844