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ide-tape: unify idetape_create_read/write_cmd 

A straightforward one. There should be no functional change resulting from this
change.

[bart: minor fixups]

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Borislav Petkov 2008-07-15 21:22:03 +02:00 committed by Bartlomiej Zolnierkiewicz
parent 646c0cb6c4
commit cd2abbfec8
1 changed files with 18 additions and 27 deletions
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45
drivers/ide/ide-tape.c
View File

@ -952,40 +952,29 @@ static ide_startstop_t idetape_media_access_finished(ide_drive_t *drive)
return ide_stopped;
}
static void idetape_create_read_cmd(idetape_tape_t *tape,
struct ide_atapi_pc *pc,
unsigned int length, struct idetape_bh *bh)
static void ide_tape_create_rw_cmd(idetape_tape_t *tape,
struct ide_atapi_pc *pc, unsigned int length,
struct idetape_bh *bh, u8 opcode)
{
idetape_init_pc(pc);
pc->c[0] = READ_6;
put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]);
pc->c[1] = 1;
pc->bh = bh;
atomic_set(&bh->b_count, 0);
pc->buf = NULL;
pc->buf_size = length * tape->blk_size;
pc->req_xfer = pc->buf_size;
if (pc->req_xfer == tape->buffer_size)
pc->flags |= PC_FLAG_DMA_OK;
}
static void idetape_create_write_cmd(idetape_tape_t *tape,
struct ide_atapi_pc *pc,
unsigned int length, struct idetape_bh *bh)
{
idetape_init_pc(pc);
pc->c[0] = WRITE_6;
put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]);
pc->c[1] = 1;
pc->flags |= PC_FLAG_WRITING;
pc->bh = bh;
pc->b_data = bh->b_data;
pc->b_count = atomic_read(&bh->b_count);
pc->buf = NULL;
pc->buf_size = length * tape->blk_size;
pc->req_xfer = pc->buf_size;
if (pc->req_xfer == tape->buffer_size)
pc->flags |= PC_FLAG_DMA_OK;
if (opcode == READ_6) {
pc->c[0] = READ_6;
atomic_set(&bh->b_count, 0);
} else if (opcode == WRITE_6) {
pc->c[0] = WRITE_6;
pc->flags |= PC_FLAG_WRITING;
pc->b_data = bh->b_data;
pc->b_count = atomic_read(&bh->b_count);
}
}
static ide_startstop_t idetape_do_request(ide_drive_t *drive,
@ -1062,14 +1051,16 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
}
if (rq->cmd[0] & REQ_IDETAPE_READ) {
pc = idetape_next_pc_storage(drive);
idetape_create_read_cmd(tape, pc, rq->current_nr_sectors,
(struct idetape_bh *)rq->special);
ide_tape_create_rw_cmd(tape, pc, rq->current_nr_sectors,
(struct idetape_bh *)rq->special,
READ_6);
goto out;
}
if (rq->cmd[0] & REQ_IDETAPE_WRITE) {
pc = idetape_next_pc_storage(drive);
idetape_create_write_cmd(tape, pc, rq->current_nr_sectors,
(struct idetape_bh *)rq->special);
ide_tape_create_rw_cmd(tape, pc, rq->current_nr_sectors,
(struct idetape_bh *)rq->special,
WRITE_6);
goto out;
}
if (rq->cmd[0] & REQ_IDETAPE_PC1) {