ide-taskfile.c revision 23579a2a170265aacf78069f4817a41c1d6e9323
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_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 92int 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 107static 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 126static ide_startstop_t task_no_data_intr(ide_drive_t *); 127static ide_startstop_t set_geometry_intr(ide_drive_t *); 128static ide_startstop_t recal_intr(ide_drive_t *); 129static ide_startstop_t set_multmode_intr(ide_drive_t *); 130static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *); 131static ide_startstop_t task_in_intr(ide_drive_t *); 132 133ide_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} 188EXPORT_SYMBOL_GPL(do_rw_taskfile); 189 190/* 191 * set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd. 192 */ 193static 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 */ 210static 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 */ 232static 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 */ 244static 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 262static 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 286static 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 336static 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 345static 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 375static 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 410void 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 */ 434static 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 */ 450static 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 */ 484static 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 509static 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 531int 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 558EXPORT_SYMBOL(ide_raw_taskfile); 559 560int 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} 566EXPORT_SYMBOL_GPL(ide_no_data_taskfile); 567 568#ifdef CONFIG_IDE_TASK_IOCTL 569int 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 } 760abort: 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 771int 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 } 839abort: 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 850int 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} 875