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Subject[PATCH 06/18] ide: add ->exec_command method
Add ->exec_command method for writing ATA Command register
and use it instead of ->OUTBSYNC.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ide/ide-io.c | 3 +--
drivers/ide/ide-iops.c | 19 ++++++++++++++-----
drivers/ide/ide-probe.c | 6 +++---
drivers/ide/ide-taskfile.c | 2 +-
drivers/ide/pci/scc_pata.c | 9 +++++++++
drivers/ide/ppc/pmac.c | 9 +++++++++
drivers/scsi/ide-scsi.c | 3 +--
include/linux/ide.h | 3 ++-
8 files changed, 40 insertions(+), 14 deletions(-)

Index: b/drivers/ide/ide-io.c
===================================================================
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -437,8 +437,7 @@ static ide_startstop_t ide_atapi_error(i

if (ide_read_status(drive) & (BUSY_STAT | DRQ_STAT))
/* force an abort */
- hwif->OUTBSYNC(hwif, WIN_IDLEIMMEDIATE,
- hwif->io_ports.command_addr);
+ hwif->exec_command(hwif, WIN_IDLEIMMEDIATE);

if (rq->errors >= ERROR_MAX) {
ide_kill_rq(drive, rq);
Index: b/drivers/ide/ide-iops.c
===================================================================
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -103,6 +103,14 @@ void SELECT_MASK(ide_drive_t *drive, int
port_ops->maskproc(drive, mask);
}

+static void ide_exec_command(ide_hwif_t *hwif, u8 cmd)
+{
+ if (hwif->host_flags & IDE_HFLAG_MMIO)
+ writeb(cmd, (void __iomem *)hwif->io_ports.command_addr);
+ else
+ outb(cmd, hwif->io_ports.command_addr);
+}
+
static u8 ide_read_sff_dma_status(ide_hwif_t *hwif)
{
if (hwif->host_flags & IDE_HFLAG_MMIO)
@@ -331,6 +339,7 @@ static void ata_output_data(ide_drive_t

void default_hwif_transport(ide_hwif_t *hwif)
{
+ hwif->exec_command = ide_exec_command;
hwif->read_sff_dma_status = ide_read_sff_dma_status;

hwif->tf_load = ide_tf_load;
@@ -696,7 +705,7 @@ int ide_driveid_update(ide_drive_t *driv
SELECT_MASK(drive, 1);
ide_set_irq(drive, 1);
msleep(50);
- hwif->OUTBSYNC(hwif, WIN_IDENTIFY, hwif->io_ports.command_addr);
+ hwif->exec_command(hwif, WIN_IDENTIFY);
timeout = jiffies + WAIT_WORSTCASE;
do {
if (time_after(jiffies, timeout)) {
@@ -783,7 +792,7 @@ int ide_config_drive_speed(ide_drive_t *
ide_set_irq(drive, 0);
hwif->OUTB(speed, io_ports->nsect_addr);
hwif->OUTB(SETFEATURES_XFER, io_ports->feature_addr);
- hwif->OUTBSYNC(hwif, WIN_SETFEATURES, io_ports->command_addr);
+ hwif->exec_command(hwif, WIN_SETFEATURES);
if (drive->quirk_list == 2)
ide_set_irq(drive, 1);

@@ -891,7 +900,7 @@ void ide_execute_command(ide_drive_t *dr

spin_lock_irqsave(&ide_lock, flags);
__ide_set_handler(drive, handler, timeout, expiry);
- hwif->OUTBSYNC(hwif, cmd, hwif->io_ports.command_addr);
+ hwif->exec_command(hwif, cmd);
/*
* Drive takes 400nS to respond, we must avoid the IRQ being
* serviced before that.
@@ -909,7 +918,7 @@ void ide_execute_pkt_cmd(ide_drive_t *dr
unsigned long flags;

spin_lock_irqsave(&ide_lock, flags);
- hwif->OUTBSYNC(hwif, WIN_PACKETCMD, hwif->io_ports.command_addr);
+ hwif->exec_command(hwif, WIN_PACKETCMD);
ndelay(400);
spin_unlock_irqrestore(&ide_lock, flags);
}
@@ -1104,7 +1113,7 @@ static ide_startstop_t do_reset1 (ide_dr
pre_reset(drive);
SELECT_DRIVE(drive);
udelay (20);
- hwif->OUTBSYNC(hwif, WIN_SRST, io_ports->command_addr);
+ hwif->exec_command(hwif, WIN_SRST);
ndelay(400);
hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE;
hwgroup->polling = 1;
Index: b/drivers/ide/ide-probe.c
===================================================================
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -295,7 +295,7 @@ static int actual_try_to_identify (ide_d
hwif->OUTB(0, io_ports->feature_addr);

/* ask drive for ID */
- hwif->OUTBSYNC(hwif, cmd, hwif->io_ports.command_addr);
+ hwif->exec_command(hwif, cmd);

timeout = ((cmd == WIN_IDENTIFY) ? WAIT_WORSTCASE : WAIT_PIDENTIFY) / 2;
timeout += jiffies;
@@ -482,7 +482,7 @@ static int do_probe (ide_drive_t *drive,
msleep(50);
SELECT_DRIVE(drive);
msleep(50);
- hwif->OUTBSYNC(hwif, WIN_SRST, io_ports->command_addr);
+ hwif->exec_command(hwif, WIN_SRST);
(void)ide_busy_sleep(hwif);
rc = try_to_identify(drive, cmd);
}
@@ -518,7 +518,7 @@ static void enable_nest (ide_drive_t *dr
printk("%s: enabling %s -- ", hwif->name, drive->id->model);
SELECT_DRIVE(drive);
msleep(50);
- hwif->OUTBSYNC(hwif, EXABYTE_ENABLE_NEST, hwif->io_ports.command_addr);
+ hwif->exec_command(hwif, EXABYTE_ENABLE_NEST);

if (ide_busy_sleep(hwif)) {
printk(KERN_CONT "failed (timeout)\n");
Index: b/drivers/ide/ide-taskfile.c
===================================================================
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -87,7 +87,7 @@ ide_startstop_t do_rw_taskfile (ide_driv
switch (task->data_phase) {
case TASKFILE_MULTI_OUT:
case TASKFILE_OUT:
- hwif->OUTBSYNC(hwif, tf->command, hwif->io_ports.command_addr);
+ hwif->exec_command(hwif, tf->command);
ndelay(400); /* FIXME */
return pre_task_out_intr(drive, task->rq);
case TASKFILE_MULTI_IN:
Index: b/drivers/ide/pci/scc_pata.c
===================================================================
--- a/drivers/ide/pci/scc_pata.c
+++ b/drivers/ide/pci/scc_pata.c
@@ -126,6 +126,14 @@ static u8 scc_ide_inb(unsigned long port
return (u8)data;
}

+static void scc_exec_command(ide_hwif_t *hwif, u8 cmd)
+{
+ out_be32((void *)hwif->io_ports.command_addr, cmd);
+ eieio();
+ in_be32((void *)(hwif->dma_base + 0x01c));
+ eieio();
+}
+
static u8 scc_read_sff_dma_status(ide_hwif_t *hwif)
{
return (u8)in_be32((void *)(hwif->dma_base + 4));
@@ -780,6 +788,7 @@ static void __devinit init_mmio_iops_scc

ide_set_hwifdata(hwif, ports);

+ hwif->exec_command = scc_exec_command;
hwif->read_sff_dma_status = scc_read_sff_dma_status;

hwif->tf_load = scc_tf_load;
Index: b/drivers/ide/ppc/pmac.c
===================================================================
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -495,6 +495,13 @@ static void pmac_outbsync(ide_hwif_t *hw
+ IDE_TIMING_CONFIG));
}

+static void pmac_exec_command(ide_hwif_t *hwif, u8 cmd)
+{
+ writeb(cmd, (void __iomem *)hwif->io_ports.command_addr);
+ (void)readl((void __iomem *)(hwif->io_ports.data_addr
+ + IDE_TIMING_CONFIG));
+}
+
/*
* Old tuning functions (called on hdparm -p), sets up drive PIO timings
*/
@@ -1086,6 +1093,8 @@ static int __devinit pmac_ide_setup_devi
if (hwif == NULL)
return -ENOENT;

+ hwif->exec_command = pmac_exec_command;
+
/* Setup MMIO ops */
default_hwif_mmiops(hwif);
hwif->OUTBSYNC = pmac_outbsync;
Index: b/drivers/scsi/ide-scsi.c
===================================================================
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -248,8 +248,7 @@ idescsi_atapi_error(ide_drive_t *drive,

if (ide_read_status(drive) & (BUSY_STAT | DRQ_STAT))
/* force an abort */
- hwif->OUTBSYNC(hwif, WIN_IDLEIMMEDIATE,
- hwif->io_ports.command_addr);
+ hwif->exec_command(hwif, WIN_IDLEIMMEDIATE);

rq->errors++;

Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -468,7 +468,8 @@ typedef struct hwif_s {
const struct ide_port_ops *port_ops;
const struct ide_dma_ops *dma_ops;

- u8 (*read_sff_dma_status)(struct hwif_s *);
+ void (*exec_command)(struct hwif_s *, u8);
+ u8 (*read_sff_dma_status)(struct hwif_s *);

void (*tf_load)(ide_drive_t *, struct ide_task_s *);
void (*tf_read)(ide_drive_t *, struct ide_task_s *);

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