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ide: pass command instead of request to ide_pio_datablock()

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* Add IDE_TFLAG_FS taskfile flag and set it for REQ_TYPE_FS requests.

* Convert ->{in,out}put_data methods to take command instead of request
  as an argument.  Then convert pre_task_out_intr(), task_end_request(),
  task_error(), task_in_unexpected(), ide_pio_sector(), ide_pio_multi()
  and ide_pio_datablock() in similar way.

* Rename task_end_request() to ide_finish_cmd().

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 12:46:38 +01:00
parent 22aa4b32a1
commit adb1af9803
12 changed files with 76 additions and 75 deletions
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88
drivers/ide/ide-taskfile.c
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@@ -54,19 +54,20 @@ 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 request *);
static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct ide_cmd *);
static ide_startstop_t task_in_intr(ide_drive_t *);
ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *cmd)
ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *orig_cmd)
{
ide_hwif_t *hwif = drive->hwif;
struct ide_cmd *cmd = &hwif->cmd;
struct ide_taskfile *tf = &cmd->tf;
ide_handler_t *handler = NULL;
const struct ide_tp_ops *tp_ops = hwif->tp_ops;
const struct ide_dma_ops *dma_ops = hwif->dma_ops;
if (cmd->data_phase == TASKFILE_MULTI_IN ||
cmd->data_phase == TASKFILE_MULTI_OUT) {
if (orig_cmd->data_phase == TASKFILE_MULTI_IN ||
orig_cmd->data_phase == TASKFILE_MULTI_OUT) {
if (!drive->mult_count) {
printk(KERN_ERR "%s: multimode not set!\n",
drive->name);
@@ -74,10 +75,10 @@ ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *cmd)
}
}
if (cmd->ftf_flags & IDE_FTFLAG_FLAGGED)
cmd->ftf_flags |= IDE_FTFLAG_SET_IN_FLAGS;
if (orig_cmd->ftf_flags & IDE_FTFLAG_FLAGGED)
orig_cmd->ftf_flags |= IDE_FTFLAG_SET_IN_FLAGS;
memcpy(&hwif->cmd, cmd, sizeof(*cmd));
memcpy(cmd, orig_cmd, sizeof(*cmd));
if ((cmd->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) {
ide_tf_dump(drive->name, tf);
@@ -91,7 +92,7 @@ ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *cmd)
case TASKFILE_OUT:
tp_ops->exec_command(hwif, tf->command);
ndelay(400); /* FIXME */
return pre_task_out_intr(drive, cmd->rq);
return pre_task_out_intr(drive, cmd);
case TASKFILE_MULTI_IN:
case TASKFILE_IN:
handler = task_in_intr;
@@ -203,7 +204,7 @@ static u8 wait_drive_not_busy(ide_drive_t *drive)
return stat;
}
static void ide_pio_sector(ide_drive_t *drive, struct request *rq,
static void ide_pio_sector(ide_drive_t *drive, struct ide_cmd *cmd,
unsigned int write)
{
ide_hwif_t *hwif = drive->hwif;
@@ -244,9 +245,9 @@ static void ide_pio_sector(ide_drive_t *drive, struct request *rq,
/* do the actual data transfer */
if (write)
hwif->tp_ops->output_data(drive, rq, buf, SECTOR_SIZE);
hwif->tp_ops->output_data(drive, cmd, buf, SECTOR_SIZE);
else
hwif->tp_ops->input_data(drive, rq, buf, SECTOR_SIZE);
hwif->tp_ops->input_data(drive, cmd, buf, SECTOR_SIZE);
kunmap_atomic(buf, KM_BIO_SRC_IRQ);
#ifdef CONFIG_HIGHMEM
@@ -254,24 +255,23 @@ static void ide_pio_sector(ide_drive_t *drive, struct request *rq,
#endif
}
static void ide_pio_multi(ide_drive_t *drive, struct request *rq,
static void ide_pio_multi(ide_drive_t *drive, struct ide_cmd *cmd,
unsigned int write)
{
unsigned int nsect;
nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count);
while (nsect--)
ide_pio_sector(drive, rq, write);
ide_pio_sector(drive, cmd, write);
}
static void ide_pio_datablock(ide_drive_t *drive, struct request *rq,
unsigned int write)
static void ide_pio_datablock(ide_drive_t *drive, struct ide_cmd *cmd,
unsigned int write)
{
struct ide_cmd *cmd = &drive->hwif->cmd;
u8 saved_io_32bit = drive->io_32bit;
if (blk_fs_request(rq))
rq->errors = 0;
if (cmd->tf_flags & IDE_TFLAG_FS)
cmd->rq->errors = 0;
if (cmd->tf_flags & IDE_TFLAG_IO_16BIT)
drive->io_32bit = 0;
@@ -281,22 +281,21 @@ static void ide_pio_datablock(ide_drive_t *drive, struct request *rq,
switch (cmd->data_phase) {
case TASKFILE_MULTI_IN:
case TASKFILE_MULTI_OUT:
ide_pio_multi(drive, rq, write);
ide_pio_multi(drive, cmd, write);
break;
default:
ide_pio_sector(drive, rq, write);
ide_pio_sector(drive, cmd, write);
break;
}
drive->io_32bit = saved_io_32bit;
}
static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq,
static ide_startstop_t task_error(ide_drive_t *drive, struct ide_cmd *cmd,
const char *s, u8 stat)
{
if (blk_fs_request(rq)) {
if (cmd->tf_flags & IDE_TFLAG_FS) {
ide_hwif_t *hwif = drive->hwif;
struct ide_cmd *cmd = &hwif->cmd;
int sectors = hwif->nsect - hwif->nleft;
switch (cmd->data_phase) {
@@ -323,19 +322,17 @@ static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq,
return ide_error(drive, s, stat);
}
void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat)
void ide_finish_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 stat)
{
if (blk_fs_request(rq) == 0) {
struct ide_cmd *cmd = rq->special;
if ((cmd->tf_flags & IDE_TFLAG_FS) == 0) {
u8 err = ide_read_error(drive);
if (cmd)
ide_complete_cmd(drive, cmd, stat, err);
ide_complete_cmd(drive, cmd, stat, err);
ide_complete_rq(drive, err);
return;
}
ide_end_request(drive, 1, rq->nr_sectors);
ide_end_request(drive, 1, cmd->rq->nr_sectors);
}
/*
@@ -344,11 +341,12 @@ void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat)
* It might be a spurious irq (shared irq), but it might be a
* command that had no output.
*/
static ide_startstop_t task_in_unexpected(ide_drive_t *drive, struct request *rq, u8 stat)
static ide_startstop_t task_in_unexpected(ide_drive_t *drive,
struct ide_cmd *cmd, u8 stat)
{
/* Command all done? */
if (OK_STAT(stat, ATA_DRDY, ATA_BUSY)) {
task_end_request(drive, rq, stat);
ide_finish_cmd(drive, cmd, stat);
return ide_stopped;
}
@@ -363,25 +361,25 @@ static ide_startstop_t task_in_unexpected(ide_drive_t *drive, struct request *rq
static ide_startstop_t task_in_intr(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
struct request *rq = hwif->rq;
struct ide_cmd *cmd = &drive->hwif->cmd;
u8 stat = hwif->tp_ops->read_status(hwif);
/* Error? */
if (stat & ATA_ERR)
return task_error(drive, rq, __func__, stat);
return task_error(drive, cmd, __func__, stat);
/* Didn't want any data? Odd. */
if ((stat & ATA_DRQ) == 0)
return task_in_unexpected(drive, rq, stat);
return task_in_unexpected(drive, cmd, stat);
ide_pio_datablock(drive, rq, 0);
ide_pio_datablock(drive, cmd, 0);
/* Are we done? Check status and finish transfer. */
if (!hwif->nleft) {
stat = wait_drive_not_busy(drive);
if (!OK_STAT(stat, 0, BAD_STAT))
return task_error(drive, rq, __func__, stat);
task_end_request(drive, rq, stat);
return task_error(drive, cmd, __func__, stat);
ide_finish_cmd(drive, cmd, stat);
return ide_stopped;
}
@@ -397,31 +395,31 @@ static ide_startstop_t task_in_intr(ide_drive_t *drive)
static ide_startstop_t task_out_intr (ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
struct request *rq = hwif->rq;
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, rq, __func__, stat);
return task_error(drive, cmd, __func__, stat);
/* Deal with unexpected ATA data phase. */
if (((stat & ATA_DRQ) == 0) ^ !hwif->nleft)
return task_error(drive, rq, __func__, stat);
return task_error(drive, cmd, __func__, stat);
if (!hwif->nleft) {
task_end_request(drive, rq, stat);
ide_finish_cmd(drive, cmd, stat);
return ide_stopped;
}
/* Still data left to transfer. */
ide_pio_datablock(drive, rq, 1);
ide_pio_datablock(drive, cmd, 1);
ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
return ide_started;
}
static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq)
static ide_startstop_t pre_task_out_intr(ide_drive_t *drive,
struct ide_cmd *cmd)
{
struct ide_cmd *cmd = &drive->hwif->cmd;
ide_startstop_t startstop;
if (ide_wait_stat(&startstop, drive, ATA_DRQ,
@@ -437,7 +435,7 @@ static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq)
local_irq_disable();
ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
ide_pio_datablock(drive, rq, 1);
ide_pio_datablock(drive, cmd, 1);
return ide_started;
}