ide-taskfile.c revision c47137a99c597330b69057158b26061a360c0e09
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, IDE_DATA_REG); 63 64 if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE) 65 hwif->OUTB(tf->hob_feature, IDE_FEATURE_REG); 66 if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT) 67 hwif->OUTB(tf->hob_nsect, IDE_NSECTOR_REG); 68 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL) 69 hwif->OUTB(tf->hob_lbal, IDE_SECTOR_REG); 70 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM) 71 hwif->OUTB(tf->hob_lbam, IDE_LCYL_REG); 72 if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH) 73 hwif->OUTB(tf->hob_lbah, IDE_HCYL_REG); 74 75 if (task->tf_flags & IDE_TFLAG_OUT_FEATURE) 76 hwif->OUTB(tf->feature, IDE_FEATURE_REG); 77 if (task->tf_flags & IDE_TFLAG_OUT_NSECT) 78 hwif->OUTB(tf->nsect, IDE_NSECTOR_REG); 79 if (task->tf_flags & IDE_TFLAG_OUT_LBAL) 80 hwif->OUTB(tf->lbal, IDE_SECTOR_REG); 81 if (task->tf_flags & IDE_TFLAG_OUT_LBAM) 82 hwif->OUTB(tf->lbam, IDE_LCYL_REG); 83 if (task->tf_flags & IDE_TFLAG_OUT_LBAH) 84 hwif->OUTB(tf->lbah, IDE_HCYL_REG); 85 86 if (task->tf_flags & IDE_TFLAG_OUT_DEVICE) 87 hwif->OUTB((tf->device & HIHI) | drive->select.all, IDE_SELECT_REG); 88} 89 90int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf) 91{ 92 ide_task_t args; 93 94 memset(&args, 0, sizeof(ide_task_t)); 95 args.tf.nsect = 0x01; 96 if (drive->media == ide_disk) 97 args.tf.command = WIN_IDENTIFY; 98 else 99 args.tf.command = WIN_PIDENTIFY; 100 args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; 101 args.data_phase = TASKFILE_IN; 102 return ide_raw_taskfile(drive, &args, buf, 1); 103} 104 105static int inline task_dma_ok(ide_task_t *task) 106{ 107 if (blk_fs_request(task->rq) || (task->tf_flags & IDE_TFLAG_FLAGGED)) 108 return 1; 109 110 switch (task->tf.command) { 111 case WIN_WRITEDMA_ONCE: 112 case WIN_WRITEDMA: 113 case WIN_WRITEDMA_EXT: 114 case WIN_READDMA_ONCE: 115 case WIN_READDMA: 116 case WIN_READDMA_EXT: 117 case WIN_IDENTIFY_DMA: 118 return 1; 119 } 120 121 return 0; 122} 123 124static ide_startstop_t task_no_data_intr(ide_drive_t *); 125static ide_startstop_t set_geometry_intr(ide_drive_t *); 126static ide_startstop_t recal_intr(ide_drive_t *); 127static ide_startstop_t set_multmode_intr(ide_drive_t *); 128static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *); 129static ide_startstop_t task_in_intr(ide_drive_t *); 130 131ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task) 132{ 133 ide_hwif_t *hwif = HWIF(drive); 134 struct ide_taskfile *tf = &task->tf; 135 ide_handler_t *handler = NULL; 136 137 if (task->data_phase == TASKFILE_MULTI_IN || 138 task->data_phase == TASKFILE_MULTI_OUT) { 139 if (!drive->mult_count) { 140 printk(KERN_ERR "%s: multimode not set!\n", 141 drive->name); 142 return ide_stopped; 143 } 144 } 145 146 if (task->tf_flags & IDE_TFLAG_FLAGGED) 147 task->tf_flags |= IDE_TFLAG_FLAGGED_SET_IN_FLAGS; 148 149 if ((task->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) 150 ide_tf_load(drive, task); 151 152 switch (task->data_phase) { 153 case TASKFILE_MULTI_OUT: 154 case TASKFILE_OUT: 155 hwif->OUTBSYNC(drive, tf->command, IDE_COMMAND_REG); 156 ndelay(400); /* FIXME */ 157 return pre_task_out_intr(drive, task->rq); 158 case TASKFILE_MULTI_IN: 159 case TASKFILE_IN: 160 handler = task_in_intr; 161 /* fall-through */ 162 case TASKFILE_NO_DATA: 163 if (handler == NULL) 164 handler = task_no_data_intr; 165 /* WIN_{SPECIFY,RESTORE,SETMULT} use custom handlers */ 166 if (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) { 167 switch (tf->command) { 168 case WIN_SPECIFY: handler = set_geometry_intr; break; 169 case WIN_RESTORE: handler = recal_intr; break; 170 case WIN_SETMULT: handler = set_multmode_intr; break; 171 } 172 } 173 ide_execute_command(drive, tf->command, handler, 174 WAIT_WORSTCASE, NULL); 175 return ide_started; 176 default: 177 if (task_dma_ok(task) == 0 || drive->using_dma == 0 || 178 hwif->dma_setup(drive)) 179 return ide_stopped; 180 hwif->dma_exec_cmd(drive, tf->command); 181 hwif->dma_start(drive); 182 return ide_started; 183 } 184} 185EXPORT_SYMBOL_GPL(do_rw_taskfile); 186 187/* 188 * set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd. 189 */ 190static ide_startstop_t set_multmode_intr(ide_drive_t *drive) 191{ 192 u8 stat = ide_read_status(drive); 193 194 if (OK_STAT(stat, READY_STAT, BAD_STAT)) 195 drive->mult_count = drive->mult_req; 196 else { 197 drive->mult_req = drive->mult_count = 0; 198 drive->special.b.recalibrate = 1; 199 (void) ide_dump_status(drive, "set_multmode", stat); 200 } 201 return ide_stopped; 202} 203 204/* 205 * set_geometry_intr() is invoked on completion of a WIN_SPECIFY cmd. 206 */ 207static ide_startstop_t set_geometry_intr(ide_drive_t *drive) 208{ 209 int retries = 5; 210 u8 stat; 211 212 while (((stat = ide_read_status(drive)) & BUSY_STAT) && retries--) 213 udelay(10); 214 215 if (OK_STAT(stat, READY_STAT, BAD_STAT)) 216 return ide_stopped; 217 218 if (stat & (ERR_STAT|DRQ_STAT)) 219 return ide_error(drive, "set_geometry_intr", stat); 220 221 BUG_ON(HWGROUP(drive)->handler != NULL); 222 ide_set_handler(drive, &set_geometry_intr, WAIT_WORSTCASE, NULL); 223 return ide_started; 224} 225 226/* 227 * recal_intr() is invoked on completion of a WIN_RESTORE (recalibrate) cmd. 228 */ 229static ide_startstop_t recal_intr(ide_drive_t *drive) 230{ 231 u8 stat = ide_read_status(drive); 232 233 if (!OK_STAT(stat, READY_STAT, BAD_STAT)) 234 return ide_error(drive, "recal_intr", stat); 235 return ide_stopped; 236} 237 238/* 239 * Handler for commands without a data phase 240 */ 241static ide_startstop_t task_no_data_intr(ide_drive_t *drive) 242{ 243 ide_task_t *args = HWGROUP(drive)->rq->special; 244 ide_hwif_t *hwif = HWIF(drive); 245 u8 stat; 246 247 local_irq_enable_in_hardirq(); 248 stat = ide_read_status(drive); 249 250 if (!OK_STAT(stat, READY_STAT, BAD_STAT)) 251 return ide_error(drive, "task_no_data_intr", stat); 252 /* calls ide_end_drive_cmd */ 253 254 if (args) 255 ide_end_drive_cmd(drive, stat, hwif->INB(IDE_ERROR_REG)); 256 257 return ide_stopped; 258} 259 260static u8 wait_drive_not_busy(ide_drive_t *drive) 261{ 262 int retries; 263 u8 stat; 264 265 /* 266 * Last sector was transfered, wait until drive is ready. 267 * This can take up to 10 usec, but we will wait max 1 ms. 268 */ 269 for (retries = 0; retries < 100; retries++) { 270 stat = ide_read_status(drive); 271 272 if (stat & BUSY_STAT) 273 udelay(10); 274 else 275 break; 276 } 277 278 if (stat & BUSY_STAT) 279 printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); 280 281 return stat; 282} 283 284static void ide_pio_sector(ide_drive_t *drive, unsigned int write) 285{ 286 ide_hwif_t *hwif = drive->hwif; 287 struct scatterlist *sg = hwif->sg_table; 288 struct scatterlist *cursg = hwif->cursg; 289 struct page *page; 290#ifdef CONFIG_HIGHMEM 291 unsigned long flags; 292#endif 293 unsigned int offset; 294 u8 *buf; 295 296 cursg = hwif->cursg; 297 if (!cursg) { 298 cursg = sg; 299 hwif->cursg = sg; 300 } 301 302 page = sg_page(cursg); 303 offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE; 304 305 /* get the current page and offset */ 306 page = nth_page(page, (offset >> PAGE_SHIFT)); 307 offset %= PAGE_SIZE; 308 309#ifdef CONFIG_HIGHMEM 310 local_irq_save(flags); 311#endif 312 buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; 313 314 hwif->nleft--; 315 hwif->cursg_ofs++; 316 317 if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) { 318 hwif->cursg = sg_next(hwif->cursg); 319 hwif->cursg_ofs = 0; 320 } 321 322 /* do the actual data transfer */ 323 if (write) 324 hwif->ata_output_data(drive, buf, SECTOR_WORDS); 325 else 326 hwif->ata_input_data(drive, buf, SECTOR_WORDS); 327 328 kunmap_atomic(buf, KM_BIO_SRC_IRQ); 329#ifdef CONFIG_HIGHMEM 330 local_irq_restore(flags); 331#endif 332} 333 334static void ide_pio_multi(ide_drive_t *drive, unsigned int write) 335{ 336 unsigned int nsect; 337 338 nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count); 339 while (nsect--) 340 ide_pio_sector(drive, write); 341} 342 343static void ide_pio_datablock(ide_drive_t *drive, struct request *rq, 344 unsigned int write) 345{ 346 u8 saved_io_32bit = drive->io_32bit; 347 348 if (rq->bio) /* fs request */ 349 rq->errors = 0; 350 351 if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { 352 ide_task_t *task = rq->special; 353 354 if (task->tf_flags & IDE_TFLAG_IO_16BIT) 355 drive->io_32bit = 0; 356 } 357 358 touch_softlockup_watchdog(); 359 360 switch (drive->hwif->data_phase) { 361 case TASKFILE_MULTI_IN: 362 case TASKFILE_MULTI_OUT: 363 ide_pio_multi(drive, write); 364 break; 365 default: 366 ide_pio_sector(drive, write); 367 break; 368 } 369 370 drive->io_32bit = saved_io_32bit; 371} 372 373static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq, 374 const char *s, u8 stat) 375{ 376 if (rq->bio) { 377 ide_hwif_t *hwif = drive->hwif; 378 int sectors = hwif->nsect - hwif->nleft; 379 380 switch (hwif->data_phase) { 381 case TASKFILE_IN: 382 if (hwif->nleft) 383 break; 384 /* fall through */ 385 case TASKFILE_OUT: 386 sectors--; 387 break; 388 case TASKFILE_MULTI_IN: 389 if (hwif->nleft) 390 break; 391 /* fall through */ 392 case TASKFILE_MULTI_OUT: 393 sectors -= drive->mult_count; 394 default: 395 break; 396 } 397 398 if (sectors > 0) { 399 ide_driver_t *drv; 400 401 drv = *(ide_driver_t **)rq->rq_disk->private_data; 402 drv->end_request(drive, 1, sectors); 403 } 404 } 405 return ide_error(drive, s, stat); 406} 407 408void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat) 409{ 410 if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { 411 u8 err = drive->hwif->INB(IDE_ERROR_REG); 412 413 ide_end_drive_cmd(drive, stat, err); 414 return; 415 } 416 417 if (rq->rq_disk) { 418 ide_driver_t *drv; 419 420 drv = *(ide_driver_t **)rq->rq_disk->private_data;; 421 drv->end_request(drive, 1, rq->nr_sectors); 422 } else 423 ide_end_request(drive, 1, rq->nr_sectors); 424} 425 426/* 427 * Handler for command with PIO data-in phase (Read/Read Multiple). 428 */ 429static ide_startstop_t task_in_intr(ide_drive_t *drive) 430{ 431 ide_hwif_t *hwif = drive->hwif; 432 struct request *rq = HWGROUP(drive)->rq; 433 u8 stat = ide_read_status(drive); 434 435 /* new way for dealing with premature shared PCI interrupts */ 436 if (!OK_STAT(stat, DRQ_STAT, BAD_R_STAT)) { 437 if (stat & (ERR_STAT | DRQ_STAT)) 438 return task_error(drive, rq, __FUNCTION__, stat); 439 /* No data yet, so wait for another IRQ. */ 440 ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); 441 return ide_started; 442 } 443 444 ide_pio_datablock(drive, rq, 0); 445 446 /* If it was the last datablock check status and finish transfer. */ 447 if (!hwif->nleft) { 448 stat = wait_drive_not_busy(drive); 449 if (!OK_STAT(stat, 0, BAD_STAT)) 450 return task_error(drive, rq, __FUNCTION__, stat); 451 task_end_request(drive, rq, stat); 452 return ide_stopped; 453 } 454 455 /* Still data left to transfer. */ 456 ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); 457 458 return ide_started; 459} 460 461/* 462 * Handler for command with PIO data-out phase (Write/Write Multiple). 463 */ 464static ide_startstop_t task_out_intr (ide_drive_t *drive) 465{ 466 ide_hwif_t *hwif = drive->hwif; 467 struct request *rq = HWGROUP(drive)->rq; 468 u8 stat = ide_read_status(drive); 469 470 if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) 471 return task_error(drive, rq, __FUNCTION__, stat); 472 473 /* Deal with unexpected ATA data phase. */ 474 if (((stat & DRQ_STAT) == 0) ^ !hwif->nleft) 475 return task_error(drive, rq, __FUNCTION__, stat); 476 477 if (!hwif->nleft) { 478 task_end_request(drive, rq, stat); 479 return ide_stopped; 480 } 481 482 /* Still data left to transfer. */ 483 ide_pio_datablock(drive, rq, 1); 484 ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); 485 486 return ide_started; 487} 488 489static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq) 490{ 491 ide_startstop_t startstop; 492 493 if (ide_wait_stat(&startstop, drive, DRQ_STAT, 494 drive->bad_wstat, WAIT_DRQ)) { 495 printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", 496 drive->name, 497 drive->hwif->data_phase ? "MULT" : "", 498 drive->addressing ? "_EXT" : ""); 499 return startstop; 500 } 501 502 if (!drive->unmask) 503 local_irq_disable(); 504 505 ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); 506 ide_pio_datablock(drive, rq, 1); 507 508 return ide_started; 509} 510 511int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect) 512{ 513 struct request rq; 514 515 memset(&rq, 0, sizeof(rq)); 516 rq.ref_count = 1; 517 rq.cmd_type = REQ_TYPE_ATA_TASKFILE; 518 rq.buffer = buf; 519 520 /* 521 * (ks) We transfer currently only whole sectors. 522 * This is suffient for now. But, it would be great, 523 * if we would find a solution to transfer any size. 524 * To support special commands like READ LONG. 525 */ 526 rq.hard_nr_sectors = rq.nr_sectors = nsect; 527 rq.hard_cur_sectors = rq.current_nr_sectors = nsect; 528 529 if (task->tf_flags & IDE_TFLAG_WRITE) 530 rq.cmd_flags |= REQ_RW; 531 532 rq.special = task; 533 task->rq = &rq; 534 535 return ide_do_drive_cmd(drive, &rq, ide_wait); 536} 537 538EXPORT_SYMBOL(ide_raw_taskfile); 539 540int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task) 541{ 542 task->data_phase = TASKFILE_NO_DATA; 543 544 return ide_raw_taskfile(drive, task, NULL, 0); 545} 546EXPORT_SYMBOL_GPL(ide_no_data_taskfile); 547 548#ifdef CONFIG_IDE_TASK_IOCTL 549int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) 550{ 551 ide_task_request_t *req_task; 552 ide_task_t args; 553 u8 *outbuf = NULL; 554 u8 *inbuf = NULL; 555 u8 *data_buf = NULL; 556 int err = 0; 557 int tasksize = sizeof(struct ide_task_request_s); 558 unsigned int taskin = 0; 559 unsigned int taskout = 0; 560 u16 nsect = 0; 561 char __user *buf = (char __user *)arg; 562 563// printk("IDE Taskfile ...\n"); 564 565 req_task = kzalloc(tasksize, GFP_KERNEL); 566 if (req_task == NULL) return -ENOMEM; 567 if (copy_from_user(req_task, buf, tasksize)) { 568 kfree(req_task); 569 return -EFAULT; 570 } 571 572 taskout = req_task->out_size; 573 taskin = req_task->in_size; 574 575 if (taskin > 65536 || taskout > 65536) { 576 err = -EINVAL; 577 goto abort; 578 } 579 580 if (taskout) { 581 int outtotal = tasksize; 582 outbuf = kzalloc(taskout, GFP_KERNEL); 583 if (outbuf == NULL) { 584 err = -ENOMEM; 585 goto abort; 586 } 587 if (copy_from_user(outbuf, buf + outtotal, taskout)) { 588 err = -EFAULT; 589 goto abort; 590 } 591 } 592 593 if (taskin) { 594 int intotal = tasksize + taskout; 595 inbuf = kzalloc(taskin, GFP_KERNEL); 596 if (inbuf == NULL) { 597 err = -ENOMEM; 598 goto abort; 599 } 600 if (copy_from_user(inbuf, buf + intotal, taskin)) { 601 err = -EFAULT; 602 goto abort; 603 } 604 } 605 606 memset(&args, 0, sizeof(ide_task_t)); 607 608 memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); 609 memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE); 610 611 args.data_phase = req_task->data_phase; 612 613 args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE | 614 IDE_TFLAG_IN_TF; 615 if (drive->addressing == 1) 616 args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB); 617 618 if (req_task->out_flags.all) { 619 args.tf_flags |= IDE_TFLAG_FLAGGED; 620 621 if (req_task->out_flags.b.data) 622 args.tf_flags |= IDE_TFLAG_OUT_DATA; 623 624 if (req_task->out_flags.b.nsector_hob) 625 args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; 626 if (req_task->out_flags.b.sector_hob) 627 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; 628 if (req_task->out_flags.b.lcyl_hob) 629 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; 630 if (req_task->out_flags.b.hcyl_hob) 631 args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; 632 633 if (req_task->out_flags.b.error_feature) 634 args.tf_flags |= IDE_TFLAG_OUT_FEATURE; 635 if (req_task->out_flags.b.nsector) 636 args.tf_flags |= IDE_TFLAG_OUT_NSECT; 637 if (req_task->out_flags.b.sector) 638 args.tf_flags |= IDE_TFLAG_OUT_LBAL; 639 if (req_task->out_flags.b.lcyl) 640 args.tf_flags |= IDE_TFLAG_OUT_LBAM; 641 if (req_task->out_flags.b.hcyl) 642 args.tf_flags |= IDE_TFLAG_OUT_LBAH; 643 } else { 644 args.tf_flags |= IDE_TFLAG_OUT_TF; 645 if (args.tf_flags & IDE_TFLAG_LBA48) 646 args.tf_flags |= IDE_TFLAG_OUT_HOB; 647 } 648 649 if (req_task->in_flags.b.data) 650 args.tf_flags |= IDE_TFLAG_IN_DATA; 651 652 switch(req_task->data_phase) { 653 case TASKFILE_MULTI_OUT: 654 if (!drive->mult_count) { 655 /* (hs): give up if multcount is not set */ 656 printk(KERN_ERR "%s: %s Multimode Write " \ 657 "multcount is not set\n", 658 drive->name, __FUNCTION__); 659 err = -EPERM; 660 goto abort; 661 } 662 /* fall through */ 663 case TASKFILE_OUT: 664 /* fall through */ 665 case TASKFILE_OUT_DMAQ: 666 case TASKFILE_OUT_DMA: 667 nsect = taskout / SECTOR_SIZE; 668 data_buf = outbuf; 669 break; 670 case TASKFILE_MULTI_IN: 671 if (!drive->mult_count) { 672 /* (hs): give up if multcount is not set */ 673 printk(KERN_ERR "%s: %s Multimode Read failure " \ 674 "multcount is not set\n", 675 drive->name, __FUNCTION__); 676 err = -EPERM; 677 goto abort; 678 } 679 /* fall through */ 680 case TASKFILE_IN: 681 /* fall through */ 682 case TASKFILE_IN_DMAQ: 683 case TASKFILE_IN_DMA: 684 nsect = taskin / SECTOR_SIZE; 685 data_buf = inbuf; 686 break; 687 case TASKFILE_NO_DATA: 688 break; 689 default: 690 err = -EFAULT; 691 goto abort; 692 } 693 694 if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) 695 nsect = 0; 696 else if (!nsect) { 697 nsect = (args.tf.hob_nsect << 8) | args.tf.nsect; 698 699 if (!nsect) { 700 printk(KERN_ERR "%s: in/out command without data\n", 701 drive->name); 702 err = -EFAULT; 703 goto abort; 704 } 705 } 706 707 if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) 708 args.tf_flags |= IDE_TFLAG_WRITE; 709 710 err = ide_raw_taskfile(drive, &args, data_buf, nsect); 711 712 memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2); 713 memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE); 714 715 if ((args.tf_flags & IDE_TFLAG_FLAGGED_SET_IN_FLAGS) && 716 req_task->in_flags.all == 0) { 717 req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; 718 if (drive->addressing == 1) 719 req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); 720 } 721 722 if (copy_to_user(buf, req_task, tasksize)) { 723 err = -EFAULT; 724 goto abort; 725 } 726 if (taskout) { 727 int outtotal = tasksize; 728 if (copy_to_user(buf + outtotal, outbuf, taskout)) { 729 err = -EFAULT; 730 goto abort; 731 } 732 } 733 if (taskin) { 734 int intotal = tasksize + taskout; 735 if (copy_to_user(buf + intotal, inbuf, taskin)) { 736 err = -EFAULT; 737 goto abort; 738 } 739 } 740abort: 741 kfree(req_task); 742 kfree(outbuf); 743 kfree(inbuf); 744 745// printk("IDE Taskfile ioctl ended. rc = %i\n", err); 746 747 return err; 748} 749#endif 750 751int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) 752{ 753 u8 *buf = NULL; 754 int bufsize = 0, err = 0; 755 u8 args[4], xfer_rate = 0; 756 ide_task_t tfargs; 757 struct ide_taskfile *tf = &tfargs.tf; 758 struct hd_driveid *id = drive->id; 759 760 if (NULL == (void *) arg) { 761 struct request rq; 762 763 ide_init_drive_cmd(&rq); 764 rq.cmd_type = REQ_TYPE_ATA_TASKFILE; 765 766 return ide_do_drive_cmd(drive, &rq, ide_wait); 767 } 768 769 if (copy_from_user(args, (void __user *)arg, 4)) 770 return -EFAULT; 771 772 memset(&tfargs, 0, sizeof(ide_task_t)); 773 tf->feature = args[2]; 774 if (args[0] == WIN_SMART) { 775 tf->nsect = args[3]; 776 tf->lbal = args[1]; 777 tf->lbam = 0x4f; 778 tf->lbah = 0xc2; 779 tfargs.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_IN_NSECT; 780 } else { 781 tf->nsect = args[1]; 782 tfargs.tf_flags = IDE_TFLAG_OUT_FEATURE | 783 IDE_TFLAG_OUT_NSECT | IDE_TFLAG_IN_NSECT; 784 } 785 tf->command = args[0]; 786 tfargs.data_phase = args[3] ? TASKFILE_IN : TASKFILE_NO_DATA; 787 788 if (args[3]) { 789 tfargs.tf_flags |= IDE_TFLAG_IO_16BIT; 790 bufsize = SECTOR_WORDS * 4 * args[3]; 791 buf = kzalloc(bufsize, GFP_KERNEL); 792 if (buf == NULL) 793 return -ENOMEM; 794 } 795 796 if (tf->command == WIN_SETFEATURES && 797 tf->feature == SETFEATURES_XFER && 798 tf->nsect >= XFER_SW_DMA_0 && 799 (id->dma_ultra || id->dma_mword || id->dma_1word)) { 800 xfer_rate = args[1]; 801 if (tf->nsect > XFER_UDMA_2 && !eighty_ninty_three(drive)) { 802 printk(KERN_WARNING "%s: UDMA speeds >UDMA33 cannot " 803 "be set\n", drive->name); 804 goto abort; 805 } 806 } 807 808 err = ide_raw_taskfile(drive, &tfargs, buf, args[3]); 809 810 args[0] = tf->status; 811 args[1] = tf->error; 812 args[2] = tf->nsect; 813 814 if (!err && xfer_rate) { 815 /* active-retuning-calls future */ 816 ide_set_xfer_rate(drive, xfer_rate); 817 ide_driveid_update(drive); 818 } 819abort: 820 if (copy_to_user((void __user *)arg, &args, 4)) 821 err = -EFAULT; 822 if (buf) { 823 if (copy_to_user((void __user *)(arg + 4), buf, bufsize)) 824 err = -EFAULT; 825 kfree(buf); 826 } 827 return err; 828} 829 830int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) 831{ 832 void __user *p = (void __user *)arg; 833 int err = 0; 834 u8 args[7]; 835 ide_task_t task; 836 837 if (copy_from_user(args, p, 7)) 838 return -EFAULT; 839 840 memset(&task, 0, sizeof(task)); 841 memcpy(&task.tf_array[7], &args[1], 6); 842 task.tf.command = args[0]; 843 task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; 844 845 err = ide_no_data_taskfile(drive, &task); 846 847 args[0] = task.tf.command; 848 memcpy(&args[1], &task.tf_array[7], 6); 849 850 if (copy_to_user(p, args, 7)) 851 err = -EFAULT; 852 853 return err; 854} 855