AcoSail/kernel_optimize_test
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ide: merge task_{in,out}_intr()

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* Merge task_out_intr() with task_in_intr().

* Rename task_in_intr() to task_pio_intr().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2009-03-27 12:46:39 +01:00
parent 0dfb991c69
commit 901bd08a54
1 changed files with 33 additions and 43 deletions
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76
drivers/ide/ide-taskfile.c
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@ -55,7 +55,7 @@ int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf)
static ide_startstop_t task_no_data_intr(ide_drive_t *);
static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct ide_cmd *);
static ide_startstop_t task_in_intr(ide_drive_t *);
static ide_startstop_t task_pio_intr(ide_drive_t *);
ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *orig_cmd)
{
@ -92,7 +92,7 @@ ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *orig_cmd)
ndelay(400); /* FIXME */
return pre_task_out_intr(drive, cmd);
}
handler = task_in_intr;
handler = task_pio_intr;
/* fall-through */
case ATA_PROT_NODATA:
if (handler == NULL)
@ -329,31 +329,48 @@ static ide_startstop_t task_in_unexpected(ide_drive_t *drive,
}
/* Assume it was a spurious irq */
ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE, NULL);
return ide_started;
}
/*
* Handler for command with PIO data-in phase (Read/Read Multiple).
* Handler for command with PIO data phase.
*/
static ide_startstop_t task_in_intr(ide_drive_t *drive)
static ide_startstop_t task_pio_intr(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
struct ide_cmd *cmd = &drive->hwif->cmd;
u8 stat = hwif->tp_ops->read_status(hwif);
u8 write = !!(cmd->tf_flags & IDE_TFLAG_WRITE);
/* Error? */
if (stat & ATA_ERR)
return task_error(drive, cmd, __func__, stat);
if (write == 0) {
/* Error? */
if (stat & ATA_ERR)
return task_error(drive, cmd, __func__, stat);
/* Didn't want any data? Odd. */
if ((stat & ATA_DRQ) == 0)
return task_in_unexpected(drive, cmd, stat);
/* Didn't want any data? Odd. */
if ((stat & ATA_DRQ) == 0)
return task_in_unexpected(drive, cmd, stat);
} else {
if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat))
return task_error(drive, cmd, __func__, stat);
ide_pio_datablock(drive, cmd, 0);
/* Deal with unexpected ATA data phase. */
if (((stat & ATA_DRQ) == 0) ^ (cmd->nleft == 0))
return task_error(drive, cmd, __func__, stat);
}
if (write && cmd->nleft == 0) {
ide_finish_cmd(drive, cmd, stat);
return ide_stopped;
}
/* Still data left to transfer. */
ide_pio_datablock(drive, cmd, write);
/* Are we done? Check status and finish transfer. */
if (cmd->nleft == 0) {
if (write == 0 && cmd->nleft == 0) {
stat = wait_drive_not_busy(drive);
if (!OK_STAT(stat, 0, BAD_STAT))
return task_error(drive, cmd, __func__, stat);
@ -362,35 +379,7 @@ static ide_startstop_t task_in_intr(ide_drive_t *drive)
}
/* Still data left to transfer. */
ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
return ide_started;
}
/*
* Handler for command with PIO data-out phase (Write/Write Multiple).
*/
static ide_startstop_t task_out_intr (ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
struct ide_cmd *cmd = &drive->hwif->cmd;
u8 stat = hwif->tp_ops->read_status(hwif);
if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat))
return task_error(drive, cmd, __func__, stat);
/* Deal with unexpected ATA data phase. */
if (((stat & ATA_DRQ) == 0) ^ (cmd->nleft == 0))
return task_error(drive, cmd, __func__, stat);
if (cmd->nleft == 0) {
ide_finish_cmd(drive, cmd, stat);
return ide_stopped;
}
/* Still data left to transfer. */
ide_pio_datablock(drive, cmd, 1);
ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE, NULL);
return ide_started;
}
@ -412,7 +401,8 @@ static ide_startstop_t pre_task_out_intr(ide_drive_t *drive,
if ((drive->dev_flags & IDE_DFLAG_UNMASK) == 0)
local_irq_disable();
ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE, NULL);
ide_pio_datablock(drive, cmd, 1);
return ide_started;