ide: pass command instead of request to ide_pio_datablock()
* 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>
diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index 2b85c13..d3bd93a 100644
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -54,19 +54,20 @@
}
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 @@
}
}
- 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 @@
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 @@
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 @@
/* 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 @@
#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 @@
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 @@
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 @@
* 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_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_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 @@
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;
}