diff options
Diffstat (limited to 'drivers/ide/ide-atapi.c')
| -rw-r--r-- | drivers/ide/ide-atapi.c | 53 |
1 files changed, 51 insertions, 2 deletions
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c index e96c0126059..6adc5b4a440 100644 --- a/drivers/ide/ide-atapi.c +++ b/drivers/ide/ide-atapi.c @@ -140,10 +140,19 @@ static void ide_queue_pc_head(ide_drive_t *drive, struct gendisk *disk, rq->cmd_flags |= REQ_PREEMPT; rq->buffer = (char *)pc; rq->rq_disk = disk; + + if (pc->req_xfer) { + rq->data = pc->buf; + rq->data_len = pc->req_xfer; + } + memcpy(rq->cmd, pc->c, 12); if (drive->media == ide_tape) rq->cmd[13] = REQ_IDETAPE_PC1; - ide_do_drive_cmd(drive, rq); + + drive->hwif->rq = NULL; + + elv_add_request(drive->queue, rq, ELEVATOR_INSERT_FRONT, 0); } /* @@ -159,6 +168,12 @@ int ide_queue_pc_tail(ide_drive_t *drive, struct gendisk *disk, rq = blk_get_request(drive->queue, READ, __GFP_WAIT); rq->cmd_type = REQ_TYPE_SPECIAL; rq->buffer = (char *)pc; + + if (pc->req_xfer) { + rq->data = pc->buf; + rq->data_len = pc->req_xfer; + } + memcpy(rq->cmd, pc->c, 12); if (drive->media == ide_tape) rq->cmd[13] = REQ_IDETAPE_PC1; @@ -285,6 +300,21 @@ int ide_cd_get_xferlen(struct request *rq) } EXPORT_SYMBOL_GPL(ide_cd_get_xferlen); +void ide_read_bcount_and_ireason(ide_drive_t *drive, u16 *bcount, u8 *ireason) +{ + ide_task_t task; + + memset(&task, 0, sizeof(task)); + task.tf_flags = IDE_TFLAG_IN_LBAH | IDE_TFLAG_IN_LBAM | + IDE_TFLAG_IN_NSECT; + + drive->hwif->tp_ops->tf_read(drive, &task); + + *bcount = (task.tf.lbah << 8) | task.tf.lbam; + *ireason = task.tf.nsect & 3; +} +EXPORT_SYMBOL_GPL(ide_read_bcount_and_ireason); + /* * This is the usual interrupt handler which will be called during a packet * command. We will transfer some of the data (as requested by the drive) @@ -444,6 +474,25 @@ next_irq: return ide_started; } +static void ide_pktcmd_tf_load(ide_drive_t *drive, u32 tf_flags, u16 bcount) +{ + ide_hwif_t *hwif = drive->hwif; + ide_task_t task; + u8 dma = drive->dma; + + memset(&task, 0, sizeof(task)); + task.tf_flags = IDE_TFLAG_OUT_LBAH | IDE_TFLAG_OUT_LBAM | + IDE_TFLAG_OUT_FEATURE | tf_flags; + task.tf.feature = dma; /* Use PIO/DMA */ + task.tf.lbam = bcount & 0xff; + task.tf.lbah = (bcount >> 8) & 0xff; + + ide_tf_dump(drive->name, &task.tf); + hwif->tp_ops->set_irq(hwif, 1); + SELECT_MASK(drive, 0); + hwif->tp_ops->tf_load(drive, &task); +} + static u8 ide_read_ireason(ide_drive_t *drive) { ide_task_t task; @@ -617,7 +666,7 @@ ide_startstop_t ide_issue_pc(ide_drive_t *drive) : WAIT_TAPE_CMD; } - ide_pktcmd_tf_load(drive, tf_flags, bcount, drive->dma); + ide_pktcmd_tf_load(drive, tf_flags, bcount); /* Issue the packet command */ if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) { |