ide-taskfile.c revision 5a9e77af970f14a94482a6d4dca5c48efb70deb2
1/* 2 * linux/drivers/ide/ide-taskfile.c Version 0.38 March 05, 2003 3 * 4 * Copyright (C) 2000-2002 Michael Cornwell <cornwell@acm.org> 5 * Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org> 6 * Copyright (C) 2001-2002 Klaus Smolin 7 * IBM Storage Technology Division 8 * Copyright (C) 2003-2004 Bartlomiej Zolnierkiewicz 9 * 10 * The big the bad and the ugly. 11 */ 12 13#include <linux/module.h> 14#include <linux/types.h> 15#include <linux/string.h> 16#include <linux/kernel.h> 17#include <linux/timer.h> 18#include <linux/mm.h> 19#include <linux/sched.h> 20#include <linux/interrupt.h> 21#include <linux/major.h> 22#include <linux/errno.h> 23#include <linux/genhd.h> 24#include <linux/blkpg.h> 25#include <linux/slab.h> 26#include <linux/pci.h> 27#include <linux/delay.h> 28#include <linux/hdreg.h> 29#include <linux/ide.h> 30#include <linux/bitops.h> 31#include <linux/scatterlist.h> 32 33#include <asm/byteorder.h> 34#include <asm/irq.h> 35#include <asm/uaccess.h> 36#include <asm/io.h> 37 38void ide_tf_load(ide_drive_t *drive, ide_task_t *task) 39{ 40 ide_hwif_t *hwif = drive->hwif; 41 struct ide_taskfile *tf = &task->tf; 42 u8 HIHI = (task->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF; 43 44 if (task->tf_flags & IDE_TFLAG_FLAGGED) 45 HIHI = 0xFF; 46 47#ifdef DEBUG 48 printk("%s: tf: feat 0x%02x nsect 0x%02x lbal 0x%02x " 49 "lbam 0x%02x lbah 0x%02x dev 0x%02x cmd 0x%02x\n", 50 drive->name, tf->feature, tf->nsect, tf->lbal, 51 tf->lbam, tf->lbah, tf->device, tf->command); 52 printk("%s: hob: nsect 0x%02x lbal 0x%02x " 53 "lbam 0x%02x lbah 0x%02x\n", 54 drive->name, tf->hob_nsect, tf->hob_lbal, 55 tf->hob_lbam, tf->hob_lbah); 56#endif 57 58 ide_set_irq(drive, 1); 59 60 if ((task->tf_flags & IDE_TFLAG_NO_SELECT_MASK) == 0) 61 SELECT_MASK(drive, 0); 62 63 if (task->tf_flags & IDE_TFLAG_OUT_DATA) 64 hwif->OUTW((tf->hob_data << 8) | tf->data, IDE_DATA_REG); 65 66 if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE) 67 hwif->OUTB(tf->hob_feature, IDE_FEATURE_REG); 68 if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT) 69 hwif->OUTB(tf->hob_nsect, IDE_NSECTOR_REG); 70 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL) 71 hwif->OUTB(tf->hob_lbal, IDE_SECTOR_REG); 72 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM) 73 hwif->OUTB(tf->hob_lbam, IDE_LCYL_REG); 74 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH) 75 hwif->OUTB(tf->hob_lbah, IDE_HCYL_REG); 76 77 if (task->tf_flags & IDE_TFLAG_OUT_FEATURE) 78 hwif->OUTB(tf->feature, IDE_FEATURE_REG); 79 if (task->tf_flags & IDE_TFLAG_OUT_NSECT) 80 hwif->OUTB(tf->nsect, IDE_NSECTOR_REG); 81 if (task->tf_flags & IDE_TFLAG_OUT_LBAL) 82 hwif->OUTB(tf->lbal, IDE_SECTOR_REG); 83 if (task->tf_flags & IDE_TFLAG_OUT_LBAM) 84 hwif->OUTB(tf->lbam, IDE_LCYL_REG); 85 if (task->tf_flags & IDE_TFLAG_OUT_LBAH) 86 hwif->OUTB(tf->lbah, IDE_HCYL_REG); 87 88 if (task->tf_flags & IDE_TFLAG_OUT_DEVICE) 89 hwif->OUTB((tf->device & HIHI) | drive->select.all, IDE_SELECT_REG); 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, IDE_COMMAND_REG); 158 ndelay(400); /* FIXME */ 159 return pre_task_out_intr(drive, task->rq); 160 case TASKFILE_MULTI_IN: 161 case TASKFILE_IN: 162 handler = task_in_intr; 163 /* fall-through */ 164 case TASKFILE_NO_DATA: 165 if (handler == NULL) 166 handler = task_no_data_intr; 167 /* WIN_{SPECIFY,RESTORE,SETMULT} use custom handlers */ 168 if (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) { 169 switch (tf->command) { 170 case WIN_SPECIFY: handler = set_geometry_intr; break; 171 case WIN_RESTORE: handler = recal_intr; break; 172 case WIN_SETMULT: handler = set_multmode_intr; break; 173 } 174 } 175 ide_execute_command(drive, tf->command, handler, 176 WAIT_WORSTCASE, NULL); 177 return ide_started; 178 default: 179 if (task_dma_ok(task) == 0 || drive->using_dma == 0 || 180 hwif->dma_setup(drive)) 181 return ide_stopped; 182 hwif->dma_exec_cmd(drive, tf->command); 183 hwif->dma_start(drive); 184 return ide_started; 185 } 186} 187EXPORT_SYMBOL_GPL(do_rw_taskfile); 188 189/* 190 * set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd. 191 */ 192static ide_startstop_t set_multmode_intr(ide_drive_t *drive) 193{ 194 ide_hwif_t *hwif = HWIF(drive); 195 u8 stat; 196 197 if (OK_STAT(stat = hwif->INB(IDE_STATUS_REG),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 ide_hwif_t *hwif = HWIF(drive); 213 int retries = 5; 214 u8 stat; 215 216 while (((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) && retries--) 217 udelay(10); 218 219 if (OK_STAT(stat, READY_STAT, BAD_STAT)) 220 return ide_stopped; 221 222 if (stat & (ERR_STAT|DRQ_STAT)) 223 return ide_error(drive, "set_geometry_intr", stat); 224 225 BUG_ON(HWGROUP(drive)->handler != NULL); 226 ide_set_handler(drive, &set_geometry_intr, WAIT_WORSTCASE, NULL); 227 return ide_started; 228} 229 230/* 231 * recal_intr() is invoked on completion of a WIN_RESTORE (recalibrate) cmd. 232 */ 233static ide_startstop_t recal_intr(ide_drive_t *drive) 234{ 235 ide_hwif_t *hwif = HWIF(drive); 236 u8 stat; 237 238 if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG), READY_STAT, BAD_STAT)) 239 return ide_error(drive, "recal_intr", stat); 240 return ide_stopped; 241} 242 243/* 244 * Handler for commands without a data phase 245 */ 246static ide_startstop_t task_no_data_intr(ide_drive_t *drive) 247{ 248 ide_task_t *args = HWGROUP(drive)->rq->special; 249 ide_hwif_t *hwif = HWIF(drive); 250 u8 stat; 251 252 local_irq_enable_in_hardirq(); 253 if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG),READY_STAT,BAD_STAT)) { 254 return ide_error(drive, "task_no_data_intr", stat); 255 /* calls ide_end_drive_cmd */ 256 } 257 if (args) 258 ide_end_drive_cmd(drive, stat, hwif->INB(IDE_ERROR_REG)); 259 260 return ide_stopped; 261} 262 263u8 wait_drive_not_busy(ide_drive_t *drive) 264{ 265 ide_hwif_t *hwif = HWIF(drive); 266 int retries; 267 u8 stat; 268 269 /* 270 * Last sector was transfered, wait until drive is ready. 271 * This can take up to 10 usec, but we will wait max 1 ms. 272 */ 273 for (retries = 0; retries < 100; retries++) { 274 if ((stat = hwif->INB(IDE_STATUS_REG)) & 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 = drive->hwif->INB(IDE_ERROR_REG); 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 * Handler for command with PIO data-in phase (Read/Read Multiple). 430 */ 431static ide_startstop_t task_in_intr(ide_drive_t *drive) 432{ 433 ide_hwif_t *hwif = drive->hwif; 434 struct request *rq = HWGROUP(drive)->rq; 435 u8 stat = hwif->INB(IDE_STATUS_REG); 436 437 /* new way for dealing with premature shared PCI interrupts */ 438 if (!OK_STAT(stat, DRQ_STAT, BAD_R_STAT)) { 439 if (stat & (ERR_STAT | DRQ_STAT)) 440 return task_error(drive, rq, __FUNCTION__, stat); 441 /* No data yet, so wait for another IRQ. */ 442 ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); 443 return ide_started; 444 } 445 446 ide_pio_datablock(drive, rq, 0); 447 448 /* If it was the last datablock check status and finish transfer. */ 449 if (!hwif->nleft) { 450 stat = wait_drive_not_busy(drive); 451 if (!OK_STAT(stat, 0, BAD_STAT)) 452 return task_error(drive, rq, __FUNCTION__, stat); 453 task_end_request(drive, rq, stat); 454 return ide_stopped; 455 } 456 457 /* Still data left to transfer. */ 458 ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); 459 460 return ide_started; 461} 462 463/* 464 * Handler for command with PIO data-out phase (Write/Write Multiple). 465 */ 466static ide_startstop_t task_out_intr (ide_drive_t *drive) 467{ 468 ide_hwif_t *hwif = drive->hwif; 469 struct request *rq = HWGROUP(drive)->rq; 470 u8 stat = hwif->INB(IDE_STATUS_REG); 471 472 if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) 473 return task_error(drive, rq, __FUNCTION__, stat); 474 475 /* Deal with unexpected ATA data phase. */ 476 if (((stat & DRQ_STAT) == 0) ^ !hwif->nleft) 477 return task_error(drive, rq, __FUNCTION__, stat); 478 479 if (!hwif->nleft) { 480 task_end_request(drive, rq, stat); 481 return ide_stopped; 482 } 483 484 /* Still data left to transfer. */ 485 ide_pio_datablock(drive, rq, 1); 486 ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); 487 488 return ide_started; 489} 490 491static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq) 492{ 493 ide_startstop_t startstop; 494 495 if (ide_wait_stat(&startstop, drive, DRQ_STAT, 496 drive->bad_wstat, WAIT_DRQ)) { 497 printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", 498 drive->name, 499 drive->hwif->data_phase ? "MULT" : "", 500 drive->addressing ? "_EXT" : ""); 501 return startstop; 502 } 503 504 if (!drive->unmask) 505 local_irq_disable(); 506 507 ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); 508 ide_pio_datablock(drive, rq, 1); 509 510 return ide_started; 511} 512 513int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect) 514{ 515 struct request rq; 516 517 memset(&rq, 0, sizeof(rq)); 518 rq.ref_count = 1; 519 rq.cmd_type = REQ_TYPE_ATA_TASKFILE; 520 rq.buffer = buf; 521 522 /* 523 * (ks) We transfer currently only whole sectors. 524 * This is suffient for now. But, it would be great, 525 * if we would find a solution to transfer any size. 526 * To support special commands like READ LONG. 527 */ 528 rq.hard_nr_sectors = rq.nr_sectors = nsect; 529 rq.hard_cur_sectors = rq.current_nr_sectors = nsect; 530 531 if (task->tf_flags & IDE_TFLAG_WRITE) 532 rq.cmd_flags |= REQ_RW; 533 534 rq.special = task; 535 task->rq = &rq; 536 537 return ide_do_drive_cmd(drive, &rq, ide_wait); 538} 539 540EXPORT_SYMBOL(ide_raw_taskfile); 541 542int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task) 543{ 544 task->data_phase = TASKFILE_NO_DATA; 545 546 return ide_raw_taskfile(drive, task, NULL, 0); 547} 548EXPORT_SYMBOL_GPL(ide_no_data_taskfile); 549 550#ifdef CONFIG_IDE_TASK_IOCTL 551int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) 552{ 553 ide_task_request_t *req_task; 554 ide_task_t args; 555 u8 *outbuf = NULL; 556 u8 *inbuf = NULL; 557 u8 *data_buf = NULL; 558 int err = 0; 559 int tasksize = sizeof(struct ide_task_request_s); 560 unsigned int taskin = 0; 561 unsigned int taskout = 0; 562 u16 nsect = 0; 563 char __user *buf = (char __user *)arg; 564 565// printk("IDE Taskfile ...\n"); 566 567 req_task = kzalloc(tasksize, GFP_KERNEL); 568 if (req_task == NULL) return -ENOMEM; 569 if (copy_from_user(req_task, buf, tasksize)) { 570 kfree(req_task); 571 return -EFAULT; 572 } 573 574 taskout = req_task->out_size; 575 taskin = req_task->in_size; 576 577 if (taskin > 65536 || taskout > 65536) { 578 err = -EINVAL; 579 goto abort; 580 } 581 582 if (taskout) { 583 int outtotal = tasksize; 584 outbuf = kzalloc(taskout, GFP_KERNEL); 585 if (outbuf == NULL) { 586 err = -ENOMEM; 587 goto abort; 588 } 589 if (copy_from_user(outbuf, buf + outtotal, taskout)) { 590 err = -EFAULT; 591 goto abort; 592 } 593 } 594 595 if (taskin) { 596 int intotal = tasksize + taskout; 597 inbuf = kzalloc(taskin, GFP_KERNEL); 598 if (inbuf == NULL) { 599 err = -ENOMEM; 600 goto abort; 601 } 602 if (copy_from_user(inbuf, buf + intotal, taskin)) { 603 err = -EFAULT; 604 goto abort; 605 } 606 } 607 608 memset(&args, 0, sizeof(ide_task_t)); 609 610 memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); 611 memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE); 612 613 args.data_phase = req_task->data_phase; 614 615 args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE | 616 IDE_TFLAG_IN_TF; 617 if (drive->addressing == 1) 618 args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB); 619 620 if (req_task->out_flags.all) { 621 args.tf_flags |= IDE_TFLAG_FLAGGED; 622 623 if (req_task->out_flags.b.data) 624 args.tf_flags |= IDE_TFLAG_OUT_DATA; 625 626 if (req_task->out_flags.b.nsector_hob) 627 args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; 628 if (req_task->out_flags.b.sector_hob) 629 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; 630 if (req_task->out_flags.b.lcyl_hob) 631 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; 632 if (req_task->out_flags.b.hcyl_hob) 633 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; 634 635 if (req_task->out_flags.b.error_feature) 636 args.tf_flags |= IDE_TFLAG_OUT_FEATURE; 637 if (req_task->out_flags.b.nsector) 638 args.tf_flags |= IDE_TFLAG_OUT_NSECT; 639 if (req_task->out_flags.b.sector) 640 args.tf_flags |= IDE_TFLAG_OUT_LBAL; 641 if (req_task->out_flags.b.lcyl) 642 args.tf_flags |= IDE_TFLAG_OUT_LBAM; 643 if (req_task->out_flags.b.hcyl) 644 args.tf_flags |= IDE_TFLAG_OUT_LBAH; 645 } else { 646 args.tf_flags |= IDE_TFLAG_OUT_TF; 647 if (args.tf_flags & IDE_TFLAG_LBA48) 648 args.tf_flags |= IDE_TFLAG_OUT_HOB; 649 } 650 651 if (req_task->in_flags.b.data) 652 args.tf_flags |= IDE_TFLAG_IN_DATA; 653 654 switch(req_task->data_phase) { 655 case TASKFILE_MULTI_OUT: 656 if (!drive->mult_count) { 657 /* (hs): give up if multcount is not set */ 658 printk(KERN_ERR "%s: %s Multimode Write " \ 659 "multcount is not set\n", 660 drive->name, __FUNCTION__); 661 err = -EPERM; 662 goto abort; 663 } 664 /* fall through */ 665 case TASKFILE_OUT: 666 /* fall through */ 667 case TASKFILE_OUT_DMAQ: 668 case TASKFILE_OUT_DMA: 669 nsect = taskout / SECTOR_SIZE; 670 data_buf = outbuf; 671 break; 672 case TASKFILE_MULTI_IN: 673 if (!drive->mult_count) { 674 /* (hs): give up if multcount is not set */ 675 printk(KERN_ERR "%s: %s Multimode Read failure " \ 676 "multcount is not set\n", 677 drive->name, __FUNCTION__); 678 err = -EPERM; 679 goto abort; 680 } 681 /* fall through */ 682 case TASKFILE_IN: 683 /* fall through */ 684 case TASKFILE_IN_DMAQ: 685 case TASKFILE_IN_DMA: 686 nsect = taskin / SECTOR_SIZE; 687 data_buf = inbuf; 688 break; 689 case TASKFILE_NO_DATA: 690 break; 691 default: 692 err = -EFAULT; 693 goto abort; 694 } 695 696 if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) 697 nsect = 0; 698 else if (!nsect) { 699 nsect = (args.tf.hob_nsect << 8) | args.tf.nsect; 700 701 if (!nsect) { 702 printk(KERN_ERR "%s: in/out command without data\n", 703 drive->name); 704 err = -EFAULT; 705 goto abort; 706 } 707 } 708 709 if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) 710 args.tf_flags |= IDE_TFLAG_WRITE; 711 712 err = ide_raw_taskfile(drive, &args, data_buf, nsect); 713 714 memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2); 715 memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE); 716 717 if ((args.tf_flags & IDE_TFLAG_FLAGGED_SET_IN_FLAGS) && 718 req_task->in_flags.all == 0) { 719 req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; 720 if (drive->addressing == 1) 721 req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); 722 } 723 724 if (copy_to_user(buf, req_task, tasksize)) { 725 err = -EFAULT; 726 goto abort; 727 } 728 if (taskout) { 729 int outtotal = tasksize; 730 if (copy_to_user(buf + outtotal, outbuf, taskout)) { 731 err = -EFAULT; 732 goto abort; 733 } 734 } 735 if (taskin) { 736 int intotal = tasksize + taskout; 737 if (copy_to_user(buf + intotal, inbuf, taskin)) { 738 err = -EFAULT; 739 goto abort; 740 } 741 } 742abort: 743 kfree(req_task); 744 kfree(outbuf); 745 kfree(inbuf); 746 747// printk("IDE Taskfile ioctl ended. rc = %i\n", err); 748 749 return err; 750} 751#endif 752 753int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) 754{ 755 u8 *buf = NULL; 756 int bufsize = 0, err = 0; 757 u8 args[4], xfer_rate = 0; 758 ide_task_t tfargs; 759 struct ide_taskfile *tf = &tfargs.tf; 760 761 if (NULL == (void *) arg) { 762 struct request rq; 763 764 ide_init_drive_cmd(&rq); 765 rq.cmd_type = REQ_TYPE_ATA_TASKFILE; 766 767 return ide_do_drive_cmd(drive, &rq, ide_wait); 768 } 769 770 if (copy_from_user(args, (void __user *)arg, 4)) 771 return -EFAULT; 772 773 memset(&tfargs, 0, sizeof(ide_task_t)); 774 tf->feature = args[2]; 775 if (args[0] == WIN_SMART) { 776 tf->nsect = args[3]; 777 tf->lbal = args[1]; 778 tf->lbam = 0x4f; 779 tf->lbah = 0xc2; 780 tfargs.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_IN_NSECT; 781 } else { 782 tf->nsect = args[1]; 783 tfargs.tf_flags = IDE_TFLAG_OUT_FEATURE | 784 IDE_TFLAG_OUT_NSECT | IDE_TFLAG_IN_NSECT; 785 } 786 tf->command = args[0]; 787 tfargs.data_phase = args[3] ? TASKFILE_IN : TASKFILE_NO_DATA; 788 789 if (args[3]) { 790 tfargs.tf_flags |= IDE_TFLAG_IO_16BIT; 791 bufsize = SECTOR_WORDS * 4 * args[3]; 792 buf = kzalloc(bufsize, GFP_KERNEL); 793 if (buf == NULL) 794 return -ENOMEM; 795 } 796 797 if (set_transfer(drive, &tfargs)) { 798 xfer_rate = args[1]; 799 if (ide_ata66_check(drive, &tfargs)) 800 goto abort; 801 } 802 803 err = ide_raw_taskfile(drive, &tfargs, buf, args[3]); 804 805 args[0] = tf->status; 806 args[1] = tf->error; 807 args[2] = tf->nsect; 808 809 if (!err && xfer_rate) { 810 /* active-retuning-calls future */ 811 ide_set_xfer_rate(drive, xfer_rate); 812 ide_driveid_update(drive); 813 } 814abort: 815 if (copy_to_user((void __user *)arg, &args, 4)) 816 err = -EFAULT; 817 if (buf) { 818 if (copy_to_user((void __user *)(arg + 4), buf, bufsize)) 819 err = -EFAULT; 820 kfree(buf); 821 } 822 return err; 823} 824 825int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) 826{ 827 void __user *p = (void __user *)arg; 828 int err = 0; 829 u8 args[7]; 830 ide_task_t task; 831 832 if (copy_from_user(args, p, 7)) 833 return -EFAULT; 834 835 memset(&task, 0, sizeof(task)); 836 memcpy(&task.tf_array[7], &args[1], 6); 837 task.tf.command = args[0]; 838 task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; 839 840 err = ide_no_data_taskfile(drive, &task); 841 842 args[0] = task.tf.command; 843 memcpy(&args[1], &task.tf_array[7], 6); 844 845 if (copy_to_user(p, args, 7)) 846 err = -EFAULT; 847 848 return err; 849} 850