drivers/ide/ide-taskfile.c

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