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>

7 files changed, 38 insertions, 13 deletions

diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 661b75a89d4d..ca0c04a919cb 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -437,8 +437,7 @@ static ide_startstop_t ide_atapi_error(ide_drive_t *drive, struct request *rq, u
 
         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);
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index 17cad6c39ee3..d8db25581909 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -103,6 +103,14 @@ void SELECT_MASK(ide_drive_t *drive, int mask)
                 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 *drive, struct request *rq,
 
 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 *drive)
         SELECT_MASK(drive, 1);
         ide_set_irq(drive, 0);
         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 *drive, u8 speed)
         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 *drive, u8 cmd, ide_handler_t *handler,
 
         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 *drive)
         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);
 }
@@ -1116,7 +1125,7 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
                 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;
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index ec5f58c6f19a..d1e834a1c5cd 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -295,7 +295,7 @@ static int actual_try_to_identify (ide_drive_t *drive, u8 cmd)
                 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, u8 cmd)
                         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 *drive)
         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");
diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index 1fbdb746dc88..c56be289417e 100644
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -88,7 +88,7 @@ ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task)
         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:
diff --git a/drivers/ide/pci/scc_pata.c b/drivers/ide/pci/scc_pata.c
index fc163a7772a7..d140dfd565a4 100644
--- 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));
@@ -779,6 +787,7 @@ static void __devinit init_mmio_iops_scc(ide_hwif_t *hwif)
 
         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;
diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/ppc/pmac.c
index e68e33bb2c35..7c3a84f8fbed 100644
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -495,6 +495,13 @@ static void pmac_outbsync(ide_hwif_t *hwif, u8 value, unsigned long port)
                                      + 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
  */
@@ -1092,6 +1099,8 @@ static int __devinit pmac_ide_setup_device(pmac_ide_hwif_t *pmif, hw_regs_t *hw)
         if (hwif == NULL)
                 return -ENOENT;
 
+        hwif->exec_command = pmac_exec_command;
+
         /* Setup MMIO ops */
         default_hwif_mmiops(hwif);
         hwif->OUTBSYNC = pmac_outbsync;
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index f843c1383a4b..80123890ced0 100644
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -248,8 +248,7 @@ idescsi_atapi_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err)
 
         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++;