[PATCH 0/6] ide: more core code housekeeping

[PATCH 0/6] ide: more core code housekeeping

[Bartlomiej Zolnierkiewicz]

SFF I/O code goes to ide-io-sff.c and error handling to ide-eh.c...

diffstat:
 drivers/ide/Makefile     |    5 
 drivers/ide/ide-atapi.c  |   15 +
 drivers/ide/ide-eh.c     |  427 +++++++++++++++++++++++++++++
 drivers/ide/ide-io-sff.c |  314 +++++++++++++++++++++
 drivers/ide/ide-io.c     |  129 --------
 drivers/ide/ide-iops.c   |  691 ++---------------------------------------------
 include/linux/ide.h      |   13 
 7 files changed, 801 insertions(+), 793 deletions(-)

[PATCH 1/6] ide: move ide_read_bcount_and_ireason() to ide-atapi.c

[Bartlomiej Zolnierkiewicz]

From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] ide: move ide_read_bcount_and_ireason() to ide-atapi.c

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-atapi.c |   15 +++++++++++++++
 drivers/ide/ide-iops.c  |   15 ---------------
 2 files changed, 15 insertions(+), 15 deletions(-)

Index: b/drivers/ide/ide-atapi.c
===================================================================
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -288,6 +288,21 @@ int ide_cd_get_xferlen(struct request *r
 }
 EXPORT_SYMBOL_GPL(ide_cd_get_xferlen);
 
+void ide_read_bcount_and_ireason(ide_drive_t *drive, u16 *bcount, u8 *ireason)
+{
+	ide_task_t task;
+
+	memset(&task, 0, sizeof(task));
+	task.tf_flags = IDE_TFLAG_IN_LBAH | IDE_TFLAG_IN_LBAM |
+			IDE_TFLAG_IN_NSECT;
+
+	drive->hwif->tp_ops->tf_read(drive, &task);
+
+	*bcount = (task.tf.lbah << 8) | task.tf.lbam;
+	*ireason = task.tf.nsect & 3;
+}
+EXPORT_SYMBOL_GPL(ide_read_bcount_and_ireason);
+
 /*
  * This is the usual interrupt handler which will be called during a packet
  * command.  We will transfer some of the data (as requested by the drive)
Index: b/drivers/ide/ide-iops.c
===================================================================
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -360,21 +360,6 @@ u8 ide_read_error(ide_drive_t *drive)
 }
 EXPORT_SYMBOL_GPL(ide_read_error);
 
-void ide_read_bcount_and_ireason(ide_drive_t *drive, u16 *bcount, u8 *ireason)
-{
-	ide_task_t task;
-
-	memset(&task, 0, sizeof(task));
-	task.tf_flags = IDE_TFLAG_IN_LBAH | IDE_TFLAG_IN_LBAM |
-			IDE_TFLAG_IN_NSECT;
-
-	drive->hwif->tp_ops->tf_read(drive, &task);
-
-	*bcount = (task.tf.lbah << 8) | task.tf.lbam;
-	*ireason = task.tf.nsect & 3;
-}
-EXPORT_SYMBOL_GPL(ide_read_bcount_and_ireason);
-
 const struct ide_tp_ops default_tp_ops = {
 	.exec_command		= ide_exec_command,
 	.read_status		= ide_read_status,

[PATCH 2/6] ide: move SFF I/O code to ide-io-sff.c

[Bartlomiej Zolnierkiewicz]

From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] ide: move SFF I/O code to ide-io-sff.c

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/Makefile     |    3 
 drivers/ide/ide-io-sff.c |  314 +++++++++++++++++++++++++++++++++++++++++++++++
 drivers/ide/ide-iops.c   |  311 ----------------------------------------------
 3 files changed, 316 insertions(+), 312 deletions(-)

Index: b/drivers/ide/Makefile
===================================================================
--- a/drivers/ide/Makefile
+++ b/drivers/ide/Makefile
@@ -5,7 +5,8 @@
 EXTRA_CFLAGS				+= -Idrivers/ide
 
 ide-core-y += ide.o ide-ioctls.o ide-io.o ide-iops.o ide-lib.o ide-probe.o \
-	      ide-taskfile.o ide-pm.o ide-park.o ide-sysfs.o ide-devsets.o
+	      ide-taskfile.o ide-pm.o ide-park.o ide-sysfs.o ide-devsets.o \
+	      ide-io-sff.o
 
 # core IDE code
 ide-core-$(CONFIG_IDE_XFER_MODE)	+= ide-pio-blacklist.o ide-xfer-mode.o
Index: b/drivers/ide/ide-io-sff.c
===================================================================
--- /dev/null
+++ b/drivers/ide/ide-io-sff.c
@@ -0,0 +1,314 @@
+
+#include <linux/kernel.h>
+#include <linux/ide.h>
+
+/*
+ *	Conventional PIO operations for ATA devices
+ */
+
+static u8 ide_inb(unsigned long port)
+{
+	return (u8) inb(port);
+}
+
+static void ide_outb(u8 val, unsigned long port)
+{
+	outb(val, port);
+}
+
+/*
+ *	MMIO operations, typically used for SATA controllers
+ */
+
+static u8 ide_mm_inb(unsigned long port)
+{
+	return (u8) readb((void __iomem *) port);
+}
+
+static void ide_mm_outb(u8 value, unsigned long port)
+{
+	writeb(value, (void __iomem *) port);
+}
+
+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);
+}
+EXPORT_SYMBOL_GPL(ide_exec_command);
+
+u8 ide_read_status(ide_hwif_t *hwif)
+{
+	if (hwif->host_flags & IDE_HFLAG_MMIO)
+		return readb((void __iomem *)hwif->io_ports.status_addr);
+	else
+		return inb(hwif->io_ports.status_addr);
+}
+EXPORT_SYMBOL_GPL(ide_read_status);
+
+u8 ide_read_altstatus(ide_hwif_t *hwif)
+{
+	if (hwif->host_flags & IDE_HFLAG_MMIO)
+		return readb((void __iomem *)hwif->io_ports.ctl_addr);
+	else
+		return inb(hwif->io_ports.ctl_addr);
+}
+EXPORT_SYMBOL_GPL(ide_read_altstatus);
+
+void ide_set_irq(ide_hwif_t *hwif, int on)
+{
+	u8 ctl = ATA_DEVCTL_OBS;
+
+	if (on == 4) { /* hack for SRST */
+		ctl |= 4;
+		on &= ~4;
+	}
+
+	ctl |= on ? 0 : 2;
+
+	if (hwif->host_flags & IDE_HFLAG_MMIO)
+		writeb(ctl, (void __iomem *)hwif->io_ports.ctl_addr);
+	else
+		outb(ctl, hwif->io_ports.ctl_addr);
+}
+EXPORT_SYMBOL_GPL(ide_set_irq);
+
+void ide_tf_load(ide_drive_t *drive, ide_task_t *task)
+{
+	ide_hwif_t *hwif = drive->hwif;
+	struct ide_io_ports *io_ports = &hwif->io_ports;
+	struct ide_taskfile *tf = &task->tf;
+	void (*tf_outb)(u8 addr, unsigned long port);
+	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
+	u8 HIHI = (task->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;
+
+	if (mmio)
+		tf_outb = ide_mm_outb;
+	else
+		tf_outb = ide_outb;
+
+	if (task->tf_flags & IDE_TFLAG_FLAGGED)
+		HIHI = 0xFF;
+
+	if (task->tf_flags & IDE_TFLAG_OUT_DATA) {
+		u16 data = (tf->hob_data << 8) | tf->data;
+
+		if (mmio)
+			writew(data, (void __iomem *)io_ports->data_addr);
+		else
+			outw(data, io_ports->data_addr);
+	}
+
+	if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
+		tf_outb(tf->hob_feature, io_ports->feature_addr);
+	if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
+		tf_outb(tf->hob_nsect, io_ports->nsect_addr);
+	if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
+		tf_outb(tf->hob_lbal, io_ports->lbal_addr);
+	if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
+		tf_outb(tf->hob_lbam, io_ports->lbam_addr);
+	if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
+		tf_outb(tf->hob_lbah, io_ports->lbah_addr);
+
+	if (task->tf_flags & IDE_TFLAG_OUT_FEATURE)
+		tf_outb(tf->feature, io_ports->feature_addr);
+	if (task->tf_flags & IDE_TFLAG_OUT_NSECT)
+		tf_outb(tf->nsect, io_ports->nsect_addr);
+	if (task->tf_flags & IDE_TFLAG_OUT_LBAL)
+		tf_outb(tf->lbal, io_ports->lbal_addr);
+	if (task->tf_flags & IDE_TFLAG_OUT_LBAM)
+		tf_outb(tf->lbam, io_ports->lbam_addr);
+	if (task->tf_flags & IDE_TFLAG_OUT_LBAH)
+		tf_outb(tf->lbah, io_ports->lbah_addr);
+
+	if (task->tf_flags & IDE_TFLAG_OUT_DEVICE)
+		tf_outb((tf->device & HIHI) | drive->select,
+			 io_ports->device_addr);
+}
+EXPORT_SYMBOL_GPL(ide_tf_load);
+
+void ide_tf_read(ide_drive_t *drive, ide_task_t *task)
+{
+	ide_hwif_t *hwif = drive->hwif;
+	struct ide_io_ports *io_ports = &hwif->io_ports;
+	struct ide_taskfile *tf = &task->tf;
+	void (*tf_outb)(u8 addr, unsigned long port);
+	u8 (*tf_inb)(unsigned long port);
+	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
+
+	if (mmio) {
+		tf_outb = ide_mm_outb;
+		tf_inb  = ide_mm_inb;
+	} else {
+		tf_outb = ide_outb;
+		tf_inb  = ide_inb;
+	}
+
+	if (task->tf_flags & IDE_TFLAG_IN_DATA) {
+		u16 data;
+
+		if (mmio)
+			data = readw((void __iomem *)io_ports->data_addr);
+		else
+			data = inw(io_ports->data_addr);
+
+		tf->data = data & 0xff;
+		tf->hob_data = (data >> 8) & 0xff;
+	}
+
+	/* be sure we're looking at the low order bits */
+	tf_outb(ATA_DEVCTL_OBS & ~0x80, io_ports->ctl_addr);
+
+	if (task->tf_flags & IDE_TFLAG_IN_FEATURE)
+		tf->feature = tf_inb(io_ports->feature_addr);
+	if (task->tf_flags & IDE_TFLAG_IN_NSECT)
+		tf->nsect  = tf_inb(io_ports->nsect_addr);
+	if (task->tf_flags & IDE_TFLAG_IN_LBAL)
+		tf->lbal   = tf_inb(io_ports->lbal_addr);
+	if (task->tf_flags & IDE_TFLAG_IN_LBAM)
+		tf->lbam   = tf_inb(io_ports->lbam_addr);
+	if (task->tf_flags & IDE_TFLAG_IN_LBAH)
+		tf->lbah   = tf_inb(io_ports->lbah_addr);
+	if (task->tf_flags & IDE_TFLAG_IN_DEVICE)
+		tf->device = tf_inb(io_ports->device_addr);
+
+	if (task->tf_flags & IDE_TFLAG_LBA48) {
+		tf_outb(ATA_DEVCTL_OBS | 0x80, io_ports->ctl_addr);
+
+		if (task->tf_flags & IDE_TFLAG_IN_HOB_FEATURE)
+			tf->hob_feature = tf_inb(io_ports->feature_addr);
+		if (task->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
+			tf->hob_nsect   = tf_inb(io_ports->nsect_addr);
+		if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
+			tf->hob_lbal    = tf_inb(io_ports->lbal_addr);
+		if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
+			tf->hob_lbam    = tf_inb(io_ports->lbam_addr);
+		if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
+			tf->hob_lbah    = tf_inb(io_ports->lbah_addr);
+	}
+}
+EXPORT_SYMBOL_GPL(ide_tf_read);
+
+/*
+ * Some localbus EIDE interfaces require a special access sequence
+ * when using 32-bit I/O instructions to transfer data.  We call this
+ * the "vlb_sync" sequence, which consists of three successive reads
+ * of the sector count register location, with interrupts disabled
+ * to ensure that the reads all happen together.
+ */
+static void ata_vlb_sync(unsigned long port)
+{
+	(void)inb(port);
+	(void)inb(port);
+	(void)inb(port);
+}
+
+/*
+ * This is used for most PIO data transfers *from* the IDE interface
+ *
+ * These routines will round up any request for an odd number of bytes,
+ * so if an odd len is specified, be sure that there's at least one
+ * extra byte allocated for the buffer.
+ */
+void ide_input_data(ide_drive_t *drive, struct request *rq, void *buf,
+		    unsigned int len)
+{
+	ide_hwif_t *hwif = drive->hwif;
+	struct ide_io_ports *io_ports = &hwif->io_ports;
+	unsigned long data_addr = io_ports->data_addr;
+	u8 io_32bit = drive->io_32bit;
+	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
+
+	len++;
+
+	if (io_32bit) {
+		unsigned long uninitialized_var(flags);
+
+		if ((io_32bit & 2) && !mmio) {
+			local_irq_save(flags);
+			ata_vlb_sync(io_ports->nsect_addr);
+		}
+
+		if (mmio)
+			__ide_mm_insl((void __iomem *)data_addr, buf, len / 4);
+		else
+			insl(data_addr, buf, len / 4);
+
+		if ((io_32bit & 2) && !mmio)
+			local_irq_restore(flags);
+
+		if ((len & 3) >= 2) {
+			if (mmio)
+				__ide_mm_insw((void __iomem *)data_addr,
+						(u8 *)buf + (len & ~3), 1);
+			else
+				insw(data_addr, (u8 *)buf + (len & ~3), 1);
+		}
+	} else {
+		if (mmio)
+			__ide_mm_insw((void __iomem *)data_addr, buf, len / 2);
+		else
+			insw(data_addr, buf, len / 2);
+	}
+}
+EXPORT_SYMBOL_GPL(ide_input_data);
+
+/*
+ * This is used for most PIO data transfers *to* the IDE interface
+ */
+void ide_output_data(ide_drive_t *drive, struct request *rq, void *buf,
+		     unsigned int len)
+{
+	ide_hwif_t *hwif = drive->hwif;
+	struct ide_io_ports *io_ports = &hwif->io_ports;
+	unsigned long data_addr = io_ports->data_addr;
+	u8 io_32bit = drive->io_32bit;
+	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
+
+	if (io_32bit) {
+		unsigned long uninitialized_var(flags);
+
+		if ((io_32bit & 2) && !mmio) {
+			local_irq_save(flags);
+			ata_vlb_sync(io_ports->nsect_addr);
+		}
+
+		if (mmio)
+			__ide_mm_outsl((void __iomem *)data_addr, buf, len / 4);
+		else
+			outsl(data_addr, buf, len / 4);
+
+		if ((io_32bit & 2) && !mmio)
+			local_irq_restore(flags);
+
+		if ((len & 3) >= 2) {
+			if (mmio)
+				__ide_mm_outsw((void __iomem *)data_addr,
+						 (u8 *)buf + (len & ~3), 1);
+			else
+				outsw(data_addr, (u8 *)buf + (len & ~3), 1);
+		}
+	} else {
+		if (mmio)
+			__ide_mm_outsw((void __iomem *)data_addr, buf, len / 2);
+		else
+			outsw(data_addr, buf, len / 2);
+	}
+}
+EXPORT_SYMBOL_GPL(ide_output_data);
+
+const struct ide_tp_ops default_tp_ops = {
+	.exec_command		= ide_exec_command,
+	.read_status		= ide_read_status,
+	.read_altstatus		= ide_read_altstatus,
+
+	.set_irq		= ide_set_irq,
+
+	.tf_load		= ide_tf_load,
+	.tf_read		= ide_tf_read,
+
+	.input_data		= ide_input_data,
+	.output_data		= ide_output_data,
+};
Index: b/drivers/ide/ide-iops.c
===================================================================
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -27,34 +27,6 @@
 #include <asm/uaccess.h>
 #include <asm/io.h>
 
-/*
- *	Conventional PIO operations for ATA devices
- */
-
-static u8 ide_inb (unsigned long port)
-{
-	return (u8) inb(port);
-}
-
-static void ide_outb (u8 val, unsigned long port)
-{
-	outb(val, port);
-}
-
-/*
- *	MMIO operations, typically used for SATA controllers
- */
-
-static u8 ide_mm_inb (unsigned long port)
-{
-	return (u8) readb((void __iomem *) port);
-}
-
-static void ide_mm_outb (u8 value, unsigned long port)
-{
-	writeb(value, (void __iomem *) port);
-}
-
 void SELECT_DRIVE (ide_drive_t *drive)
 {
 	ide_hwif_t *hwif = drive->hwif;
@@ -78,275 +50,6 @@ void SELECT_MASK(ide_drive_t *drive, int
 		port_ops->maskproc(drive, mask);
 }
 
-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);
-}
-EXPORT_SYMBOL_GPL(ide_exec_command);
-
-u8 ide_read_status(ide_hwif_t *hwif)
-{
-	if (hwif->host_flags & IDE_HFLAG_MMIO)
-		return readb((void __iomem *)hwif->io_ports.status_addr);
-	else
-		return inb(hwif->io_ports.status_addr);
-}
-EXPORT_SYMBOL_GPL(ide_read_status);
-
-u8 ide_read_altstatus(ide_hwif_t *hwif)
-{
-	if (hwif->host_flags & IDE_HFLAG_MMIO)
-		return readb((void __iomem *)hwif->io_ports.ctl_addr);
-	else
-		return inb(hwif->io_ports.ctl_addr);
-}
-EXPORT_SYMBOL_GPL(ide_read_altstatus);
-
-void ide_set_irq(ide_hwif_t *hwif, int on)
-{
-	u8 ctl = ATA_DEVCTL_OBS;
-
-	if (on == 4) { /* hack for SRST */
-		ctl |= 4;
-		on &= ~4;
-	}
-
-	ctl |= on ? 0 : 2;
-
-	if (hwif->host_flags & IDE_HFLAG_MMIO)
-		writeb(ctl, (void __iomem *)hwif->io_ports.ctl_addr);
-	else
-		outb(ctl, hwif->io_ports.ctl_addr);
-}
-EXPORT_SYMBOL_GPL(ide_set_irq);
-
-void ide_tf_load(ide_drive_t *drive, ide_task_t *task)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	struct ide_io_ports *io_ports = &hwif->io_ports;
-	struct ide_taskfile *tf = &task->tf;
-	void (*tf_outb)(u8 addr, unsigned long port);
-	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
-	u8 HIHI = (task->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;
-
-	if (mmio)
-		tf_outb = ide_mm_outb;
-	else
-		tf_outb = ide_outb;
-
-	if (task->tf_flags & IDE_TFLAG_FLAGGED)
-		HIHI = 0xFF;
-
-	if (task->tf_flags & IDE_TFLAG_OUT_DATA) {
-		u16 data = (tf->hob_data << 8) | tf->data;
-
-		if (mmio)
-			writew(data, (void __iomem *)io_ports->data_addr);
-		else
-			outw(data, io_ports->data_addr);
-	}
-
-	if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
-		tf_outb(tf->hob_feature, io_ports->feature_addr);
-	if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
-		tf_outb(tf->hob_nsect, io_ports->nsect_addr);
-	if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
-		tf_outb(tf->hob_lbal, io_ports->lbal_addr);
-	if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
-		tf_outb(tf->hob_lbam, io_ports->lbam_addr);
-	if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
-		tf_outb(tf->hob_lbah, io_ports->lbah_addr);
-
-	if (task->tf_flags & IDE_TFLAG_OUT_FEATURE)
-		tf_outb(tf->feature, io_ports->feature_addr);
-	if (task->tf_flags & IDE_TFLAG_OUT_NSECT)
-		tf_outb(tf->nsect, io_ports->nsect_addr);
-	if (task->tf_flags & IDE_TFLAG_OUT_LBAL)
-		tf_outb(tf->lbal, io_ports->lbal_addr);
-	if (task->tf_flags & IDE_TFLAG_OUT_LBAM)
-		tf_outb(tf->lbam, io_ports->lbam_addr);
-	if (task->tf_flags & IDE_TFLAG_OUT_LBAH)
-		tf_outb(tf->lbah, io_ports->lbah_addr);
-
-	if (task->tf_flags & IDE_TFLAG_OUT_DEVICE)
-		tf_outb((tf->device & HIHI) | drive->select,
-			 io_ports->device_addr);
-}
-EXPORT_SYMBOL_GPL(ide_tf_load);
-
-void ide_tf_read(ide_drive_t *drive, ide_task_t *task)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	struct ide_io_ports *io_ports = &hwif->io_ports;
-	struct ide_taskfile *tf = &task->tf;
-	void (*tf_outb)(u8 addr, unsigned long port);
-	u8 (*tf_inb)(unsigned long port);
-	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
-
-	if (mmio) {
-		tf_outb = ide_mm_outb;
-		tf_inb  = ide_mm_inb;
-	} else {
-		tf_outb = ide_outb;
-		tf_inb  = ide_inb;
-	}
-
-	if (task->tf_flags & IDE_TFLAG_IN_DATA) {
-		u16 data;
-
-		if (mmio)
-			data = readw((void __iomem *)io_ports->data_addr);
-		else
-			data = inw(io_ports->data_addr);
-
-		tf->data = data & 0xff;
-		tf->hob_data = (data >> 8) & 0xff;
-	}
-
-	/* be sure we're looking at the low order bits */
-	tf_outb(ATA_DEVCTL_OBS & ~0x80, io_ports->ctl_addr);
-
-	if (task->tf_flags & IDE_TFLAG_IN_FEATURE)
-		tf->feature = tf_inb(io_ports->feature_addr);
-	if (task->tf_flags & IDE_TFLAG_IN_NSECT)
-		tf->nsect  = tf_inb(io_ports->nsect_addr);
-	if (task->tf_flags & IDE_TFLAG_IN_LBAL)
-		tf->lbal   = tf_inb(io_ports->lbal_addr);
-	if (task->tf_flags & IDE_TFLAG_IN_LBAM)
-		tf->lbam   = tf_inb(io_ports->lbam_addr);
-	if (task->tf_flags & IDE_TFLAG_IN_LBAH)
-		tf->lbah   = tf_inb(io_ports->lbah_addr);
-	if (task->tf_flags & IDE_TFLAG_IN_DEVICE)
-		tf->device = tf_inb(io_ports->device_addr);
-
-	if (task->tf_flags & IDE_TFLAG_LBA48) {
-		tf_outb(ATA_DEVCTL_OBS | 0x80, io_ports->ctl_addr);
-
-		if (task->tf_flags & IDE_TFLAG_IN_HOB_FEATURE)
-			tf->hob_feature = tf_inb(io_ports->feature_addr);
-		if (task->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
-			tf->hob_nsect   = tf_inb(io_ports->nsect_addr);
-		if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
-			tf->hob_lbal    = tf_inb(io_ports->lbal_addr);
-		if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
-			tf->hob_lbam    = tf_inb(io_ports->lbam_addr);
-		if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
-			tf->hob_lbah    = tf_inb(io_ports->lbah_addr);
-	}
-}
-EXPORT_SYMBOL_GPL(ide_tf_read);
-
-/*
- * Some localbus EIDE interfaces require a special access sequence
- * when using 32-bit I/O instructions to transfer data.  We call this
- * the "vlb_sync" sequence, which consists of three successive reads
- * of the sector count register location, with interrupts disabled
- * to ensure that the reads all happen together.
- */
-static void ata_vlb_sync(unsigned long port)
-{
-	(void)inb(port);
-	(void)inb(port);
-	(void)inb(port);
-}
-
-/*
- * This is used for most PIO data transfers *from* the IDE interface
- *
- * These routines will round up any request for an odd number of bytes,
- * so if an odd len is specified, be sure that there's at least one
- * extra byte allocated for the buffer.
- */
-void ide_input_data(ide_drive_t *drive, struct request *rq, void *buf,
-		    unsigned int len)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	struct ide_io_ports *io_ports = &hwif->io_ports;
-	unsigned long data_addr = io_ports->data_addr;
-	u8 io_32bit = drive->io_32bit;
-	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
-
-	len++;
-
-	if (io_32bit) {
-		unsigned long uninitialized_var(flags);
-
-		if ((io_32bit & 2) && !mmio) {
-			local_irq_save(flags);
-			ata_vlb_sync(io_ports->nsect_addr);
-		}
-
-		if (mmio)
-			__ide_mm_insl((void __iomem *)data_addr, buf, len / 4);
-		else
-			insl(data_addr, buf, len / 4);
-
-		if ((io_32bit & 2) && !mmio)
-			local_irq_restore(flags);
-
-		if ((len & 3) >= 2) {
-			if (mmio)
-				__ide_mm_insw((void __iomem *)data_addr,
-						(u8 *)buf + (len & ~3), 1);
-			else
-				insw(data_addr, (u8 *)buf + (len & ~3), 1);
-		}
-	} else {
-		if (mmio)
-			__ide_mm_insw((void __iomem *)data_addr, buf, len / 2);
-		else
-			insw(data_addr, buf, len / 2);
-	}
-}
-EXPORT_SYMBOL_GPL(ide_input_data);
-
-/*
- * This is used for most PIO data transfers *to* the IDE interface
- */
-void ide_output_data(ide_drive_t *drive, struct request *rq, void *buf,
-		     unsigned int len)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	struct ide_io_ports *io_ports = &hwif->io_ports;
-	unsigned long data_addr = io_ports->data_addr;
-	u8 io_32bit = drive->io_32bit;
-	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
-
-	if (io_32bit) {
-		unsigned long uninitialized_var(flags);
-
-		if ((io_32bit & 2) && !mmio) {
-			local_irq_save(flags);
-			ata_vlb_sync(io_ports->nsect_addr);
-		}
-
-		if (mmio)
-			__ide_mm_outsl((void __iomem *)data_addr, buf, len / 4);
-		else
-			outsl(data_addr, buf, len / 4);
-
-		if ((io_32bit & 2) && !mmio)
-			local_irq_restore(flags);
-
-		if ((len & 3) >= 2) {
-			if (mmio)
-				__ide_mm_outsw((void __iomem *)data_addr,
-						 (u8 *)buf + (len & ~3), 1);
-			else
-				outsw(data_addr, (u8 *)buf + (len & ~3), 1);
-		}
-	} else {
-		if (mmio)
-			__ide_mm_outsw((void __iomem *)data_addr, buf, len / 2);
-		else
-			outsw(data_addr, buf, len / 2);
-	}
-}
-EXPORT_SYMBOL_GPL(ide_output_data);
-
 u8 ide_read_error(ide_drive_t *drive)
 {
 	ide_task_t task;
@@ -360,20 +63,6 @@ u8 ide_read_error(ide_drive_t *drive)
 }
 EXPORT_SYMBOL_GPL(ide_read_error);
 
-const struct ide_tp_ops default_tp_ops = {
-	.exec_command		= ide_exec_command,
-	.read_status		= ide_read_status,
-	.read_altstatus		= ide_read_altstatus,
-
-	.set_irq		= ide_set_irq,
-
-	.tf_load		= ide_tf_load,
-	.tf_read		= ide_tf_read,
-
-	.input_data		= ide_input_data,
-	.output_data		= ide_output_data,
-};
-
 void ide_fix_driveid(u16 *id)
 {
 #ifndef __LITTLE_ENDIAN

[PATCH 3/6] ide: fix printk() levels in [atapi_]reset_pollfunc()

[Bartlomiej Zolnierkiewicz]

From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] ide: fix printk() levels in [atapi_]reset_pollfunc()

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-iops.c |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

Index: b/drivers/ide/ide-iops.c
===================================================================
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -549,7 +549,7 @@ static ide_startstop_t atapi_reset_pollf
 	stat = hwif->tp_ops->read_status(hwif);
 
 	if (OK_STAT(stat, 0, ATA_BUSY))
-		printk("%s: ATAPI reset complete\n", drive->name);
+		printk(KERN_INFO "%s: ATAPI reset complete\n", drive->name);
 	else {
 		if (time_before(jiffies, hwif->poll_timeout)) {
 			ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL);
@@ -558,8 +558,8 @@ static ide_startstop_t atapi_reset_pollf
 		}
 		/* end of polling */
 		hwif->polling = 0;
-		printk("%s: ATAPI reset timed-out, status=0x%02x\n",
-				drive->name, stat);
+		printk(KERN_ERR "%s: ATAPI reset timed-out, status=0x%02x\n",
+			drive->name, stat);
 		/* do it the old fashioned way */
 		return do_reset1(drive, 1);
 	}
@@ -618,7 +618,8 @@ static ide_startstop_t reset_pollfunc (i
 			/* continue polling */
 			return ide_started;
 		}
-		printk("%s: reset timed-out, status=0x%02x\n", hwif->name, tmp);
+		printk(KERN_ERR "%s: reset timed-out, status=0x%02x\n",
+			hwif->name, tmp);
 		drive->failures++;
 		err = -EIO;
 	} else  {

[PATCH 4/6] ide: fix comments in ide_config_drive_speed()

[Bartlomiej Zolnierkiewicz]

From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] ide: fix comments in ide_config_drive_speed()

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-iops.c |    9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

Index: b/drivers/ide/ide-iops.c
===================================================================
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -369,18 +369,15 @@ int ide_config_drive_speed(ide_drive_t *
 	 * but for some reason these don't work at
 	 * this point (lost interrupt).
 	 */
-        /*
-         * Select the drive, and issue the SETFEATURES command
-         */
-	disable_irq_nosync(hwif->irq);
-	
+
 	/*
 	 *	FIXME: we race against the running IRQ here if
 	 *	this is called from non IRQ context. If we use
 	 *	disable_irq() we hang on the error path. Work
 	 *	is needed.
 	 */
-	 
+	disable_irq_nosync(hwif->irq);
+
 	udelay(1);
 	SELECT_DRIVE(drive);
 	SELECT_MASK(drive, 1);

[PATCH 5/6] ide: checkpatch.pl fixes for ide-iops.c

[Bartlomiej Zolnierkiewicz]

From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] ide: checkpatch.pl fixes for ide-iops.c

Fix following checkpatch.pl warnings/errors:
- WARNING: space prohibited between function name and open parenthesis '('
- WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable
- WARNING: line over 80 characters
- ERROR: trailing whitespace
- ERROR: space required before the open parenthesis '('

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-iops.c |   48 +++++++++++++++++++++++-------------------------
 1 file changed, 23 insertions(+), 25 deletions(-)

Index: b/drivers/ide/ide-iops.c
===================================================================
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -27,7 +27,7 @@
 #include <asm/uaccess.h>
 #include <asm/io.h>
 
-void SELECT_DRIVE (ide_drive_t *drive)
+void SELECT_DRIVE(ide_drive_t *drive)
 {
 	ide_hwif_t *hwif = drive->hwif;
 	const struct ide_port_ops *port_ops = hwif->port_ops;
@@ -84,7 +84,7 @@ void ide_fix_driveid(u16 *id)
  * returned by the ATA_CMD_ID_ATA[PI] commands.
  */
 
-void ide_fixstring (u8 *s, const int bytecount, const int byteswap)
+void ide_fixstring(u8 *s, const int bytecount, const int byteswap)
 {
 	u8 *p, *end = &s[bytecount & ~1]; /* bytecount must be even */
 
@@ -107,7 +107,6 @@ void ide_fixstring (u8 *s, const int byt
 	while (p != end)
 		*p++ = '\0';
 }
-
 EXPORT_SYMBOL(ide_fixstring);
 
 /*
@@ -121,7 +120,8 @@ EXPORT_SYMBOL(ide_fixstring);
  * setting a timer to wake up at half second intervals thereafter,
  * until timeout is achieved, before timing out.
  */
-static int __ide_wait_stat(ide_drive_t *drive, u8 good, u8 bad, unsigned long timeout, u8 *rstat)
+static int __ide_wait_stat(ide_drive_t *drive, u8 good, u8 bad,
+			   unsigned long timeout, u8 *rstat)
 {
 	ide_hwif_t *hwif = drive->hwif;
 	const struct ide_tp_ops *tp_ops = hwif->tp_ops;
@@ -179,7 +179,8 @@ static int __ide_wait_stat(ide_drive_t *
  * The caller should return the updated value of "startstop" in this case,
  * "startstop" is unchanged when the function returns 0.
  */
-int ide_wait_stat(ide_startstop_t *startstop, ide_drive_t *drive, u8 good, u8 bad, unsigned long timeout)
+int ide_wait_stat(ide_startstop_t *startstop, ide_drive_t *drive, u8 good,
+		  u8 bad, unsigned long timeout)
 {
 	int err;
 	u8 stat;
@@ -199,7 +200,6 @@ int ide_wait_stat(ide_startstop_t *start
 
 	return err;
 }
-
 EXPORT_SYMBOL(ide_wait_stat);
 
 /**
@@ -220,7 +220,6 @@ int ide_in_drive_list(u16 *id, const str
 			return 1;
 	return 0;
 }
-
 EXPORT_SYMBOL_GPL(ide_in_drive_list);
 
 /*
@@ -245,7 +244,7 @@ static const struct drive_list_entry ivb
  *  All hosts that use the 80c ribbon must use!
  *  The name is derived from upper byte of word 93 and the 80c ribbon.
  */
-u8 eighty_ninty_three (ide_drive_t *drive)
+u8 eighty_ninty_three(ide_drive_t *drive)
 {
 	ide_hwif_t *hwif = drive->hwif;
 	u16 *id = drive->id;
@@ -470,9 +469,8 @@ void ide_set_handler (ide_drive_t *drive
 	__ide_set_handler(drive, handler, timeout, expiry);
 	spin_unlock_irqrestore(&hwif->lock, flags);
 }
-
 EXPORT_SYMBOL(ide_set_handler);
- 
+
 /**
  *	ide_execute_command	-	execute an IDE command
  *	@drive: IDE drive to issue the command against
@@ -482,7 +480,7 @@ EXPORT_SYMBOL(ide_set_handler);
  *	@expiry:  handler to run on timeout
  *
  *	Helper function to issue an IDE command. This handles the
- *	atomicity requirements, command timing and ensures that the 
+ *	atomicity requirements, command timing and ensures that the
  *	handler and IRQ setup do not race. All IDE command kick off
  *	should go via this function or do equivalent locking.
  */
@@ -528,28 +526,29 @@ static inline void ide_complete_drive_re
 }
 
 /* needed below */
-static ide_startstop_t do_reset1 (ide_drive_t *, int);
+static ide_startstop_t do_reset1(ide_drive_t *, int);
 
 /*
- * atapi_reset_pollfunc() gets invoked to poll the interface for completion every 50ms
- * during an atapi drive reset operation. If the drive has not yet responded,
- * and we have not yet hit our maximum waiting time, then the timer is restarted
- * for another 50ms.
+ * atapi_reset_pollfunc() gets invoked to poll the interface for completion
+ * every 50ms during an atapi drive reset operation.  If the drive has not yet
+ * responded, and we have not yet hit our maximum waiting time, then the timer
+ * is restarted for another 50ms.
  */
-static ide_startstop_t atapi_reset_pollfunc (ide_drive_t *drive)
+static ide_startstop_t atapi_reset_pollfunc(ide_drive_t *drive)
 {
 	ide_hwif_t *hwif = drive->hwif;
 	u8 stat;
 
 	SELECT_DRIVE(drive);
-	udelay (10);
+	udelay(10);
 	stat = hwif->tp_ops->read_status(hwif);
 
 	if (OK_STAT(stat, 0, ATA_BUSY))
 		printk(KERN_INFO "%s: ATAPI reset complete\n", drive->name);
 	else {
 		if (time_before(jiffies, hwif->poll_timeout)) {
-			ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL);
+			ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20,
+					NULL);
 			/* continue polling */
 			return ide_started;
 		}
@@ -591,7 +590,7 @@ static void ide_reset_report_error(ide_h
  * and we have not yet hit our maximum waiting time, then the timer is restarted
  * for another 50ms.
  */
-static ide_startstop_t reset_pollfunc (ide_drive_t *drive)
+static ide_startstop_t reset_pollfunc(ide_drive_t *drive)
 {
 	ide_hwif_t *hwif = drive->hwif;
 	const struct ide_port_ops *port_ops = hwif->port_ops;
@@ -703,7 +702,7 @@ static void pre_reset(ide_drive_t *drive
  * (up to 30 seconds worstcase).  So, instead of busy-waiting here for it,
  * we set a timer to poll at 50ms intervals.
  */
-static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
+static ide_startstop_t do_reset1(ide_drive_t *drive, int do_not_try_atapi)
 {
 	ide_hwif_t *hwif = drive->hwif;
 	struct ide_io_ports *io_ports = &hwif->io_ports;
@@ -723,7 +722,7 @@ static ide_startstop_t do_reset1 (ide_dr
 	if (drive->media != ide_disk && !do_not_try_atapi) {
 		pre_reset(drive);
 		SELECT_DRIVE(drive);
-		udelay (20);
+		udelay(20);
 		tp_ops->exec_command(hwif, ATA_CMD_DEV_RESET);
 		ndelay(400);
 		hwif->poll_timeout = jiffies + WAIT_WORSTCASE;
@@ -807,11 +806,10 @@ static ide_startstop_t do_reset1 (ide_dr
  * ide_do_reset() is the entry point to the drive/interface reset code.
  */
 
-ide_startstop_t ide_do_reset (ide_drive_t *drive)
+ide_startstop_t ide_do_reset(ide_drive_t *drive)
 {
 	return do_reset1(drive, 0);
 }
-
 EXPORT_SYMBOL(ide_do_reset);
 
 /*
@@ -822,7 +820,7 @@ int ide_wait_not_busy(ide_hwif_t *hwif, 
 {
 	u8 stat = 0;
 
-	while(timeout--) {
+	while (timeout--) {
 		/*
 		 * Turn this into a schedule() sleep once I'm sure
 		 * about locking issues (2.5 work ?).

[PATCH 6/6] ide: move error handling code to ide-eh.c

[Bartlomiej Zolnierkiewicz]

From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] ide: move error handling code to ide-eh.c

Do some CodingStyle fixups in <linux/ide.h> while at it.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/Makefile   |    2 
 drivers/ide/ide-eh.c   |  427 +++++++++++++++++++++++++++++++++++++++++++++++++
 drivers/ide/ide-io.c   |  129 --------------
 drivers/ide/ide-iops.c |  299 ----------------------------------
 include/linux/ide.h    |   13 -
 5 files changed, 439 insertions(+), 431 deletions(-)

Index: b/drivers/ide/Makefile
===================================================================
--- a/drivers/ide/Makefile
+++ b/drivers/ide/Makefile
@@ -6,7 +6,7 @@ EXTRA_CFLAGS				+= -Idrivers/ide
 
 ide-core-y += ide.o ide-ioctls.o ide-io.o ide-iops.o ide-lib.o ide-probe.o \
 	      ide-taskfile.o ide-pm.o ide-park.o ide-sysfs.o ide-devsets.o \
-	      ide-io-sff.o
+	      ide-io-sff.o ide-eh.o
 
 # core IDE code
 ide-core-$(CONFIG_IDE_XFER_MODE)	+= ide-pio-blacklist.o ide-xfer-mode.o
Index: b/drivers/ide/ide-eh.c
===================================================================
--- /dev/null
+++ b/drivers/ide/ide-eh.c
@@ -0,0 +1,427 @@
+
+#include <linux/kernel.h>
+#include <linux/ide.h>
+
+static ide_startstop_t ide_ata_error(ide_drive_t *drive, struct request *rq,
+				     u8 stat, u8 err)
+{
+	ide_hwif_t *hwif = drive->hwif;
+
+	if ((stat & ATA_BUSY) ||
+	    ((stat & ATA_DF) && (drive->dev_flags & IDE_DFLAG_NOWERR) == 0)) {
+		/* other bits are useless when BUSY */
+		rq->errors |= ERROR_RESET;
+	} else if (stat & ATA_ERR) {
+		/* err has different meaning on cdrom and tape */
+		if (err == ATA_ABORTED) {
+			if ((drive->dev_flags & IDE_DFLAG_LBA) &&
+			    /* some newer drives don't support ATA_CMD_INIT_DEV_PARAMS */
+			    hwif->tp_ops->read_status(hwif) == ATA_CMD_INIT_DEV_PARAMS)
+				return ide_stopped;
+		} else if ((err & BAD_CRC) == BAD_CRC) {
+			/* UDMA crc error, just retry the operation */
+			drive->crc_count++;
+		} else if (err & (ATA_BBK | ATA_UNC)) {
+			/* retries won't help these */
+			rq->errors = ERROR_MAX;
+		} else if (err & ATA_TRK0NF) {
+			/* help it find track zero */
+			rq->errors |= ERROR_RECAL;
+		}
+	}
+
+	if ((stat & ATA_DRQ) && rq_data_dir(rq) == READ &&
+	    (hwif->host_flags & IDE_HFLAG_ERROR_STOPS_FIFO) == 0) {
+		int nsect = drive->mult_count ? drive->mult_count : 1;
+
+		ide_pad_transfer(drive, READ, nsect * SECTOR_SIZE);
+	}
+
+	if (rq->errors >= ERROR_MAX || blk_noretry_request(rq)) {
+		ide_kill_rq(drive, rq);
+		return ide_stopped;
+	}
+
+	if (hwif->tp_ops->read_status(hwif) & (ATA_BUSY | ATA_DRQ))
+		rq->errors |= ERROR_RESET;
+
+	if ((rq->errors & ERROR_RESET) == ERROR_RESET) {
+		++rq->errors;
+		return ide_do_reset(drive);
+	}
+
+	if ((rq->errors & ERROR_RECAL) == ERROR_RECAL)
+		drive->special.b.recalibrate = 1;
+
+	++rq->errors;
+
+	return ide_stopped;
+}
+
+static ide_startstop_t ide_atapi_error(ide_drive_t *drive, struct request *rq,
+				       u8 stat, u8 err)
+{
+	ide_hwif_t *hwif = drive->hwif;
+
+	if ((stat & ATA_BUSY) ||
+	    ((stat & ATA_DF) && (drive->dev_flags & IDE_DFLAG_NOWERR) == 0)) {
+		/* other bits are useless when BUSY */
+		rq->errors |= ERROR_RESET;
+	} else {
+		/* add decoding error stuff */
+	}
+
+	if (hwif->tp_ops->read_status(hwif) & (ATA_BUSY | ATA_DRQ))
+		/* force an abort */
+		hwif->tp_ops->exec_command(hwif, ATA_CMD_IDLEIMMEDIATE);
+
+	if (rq->errors >= ERROR_MAX) {
+		ide_kill_rq(drive, rq);
+	} else {
+		if ((rq->errors & ERROR_RESET) == ERROR_RESET) {
+			++rq->errors;
+			return ide_do_reset(drive);
+		}
+		++rq->errors;
+	}
+
+	return ide_stopped;
+}
+
+static ide_startstop_t __ide_error(ide_drive_t *drive, struct request *rq,
+				   u8 stat, u8 err)
+{
+	if (drive->media == ide_disk)
+		return ide_ata_error(drive, rq, stat, err);
+	return ide_atapi_error(drive, rq, stat, err);
+}
+
+/**
+ *	ide_error	-	handle an error on the IDE
+ *	@drive: drive the error occurred on
+ *	@msg: message to report
+ *	@stat: status bits
+ *
+ *	ide_error() takes action based on the error returned by the drive.
+ *	For normal I/O that may well include retries. We deal with
+ *	both new-style (taskfile) and old style command handling here.
+ *	In the case of taskfile command handling there is work left to
+ *	do
+ */
+
+ide_startstop_t ide_error(ide_drive_t *drive, const char *msg, u8 stat)
+{
+	struct request *rq;
+	u8 err;
+
+	err = ide_dump_status(drive, msg, stat);
+
+	rq = drive->hwif->rq;
+	if (rq == NULL)
+		return ide_stopped;
+
+	/* retry only "normal" I/O: */
+	if (!blk_fs_request(rq)) {
+		rq->errors = 1;
+		ide_end_drive_cmd(drive, stat, err);
+		return ide_stopped;
+	}
+
+	return __ide_error(drive, rq, stat, err);
+}
+EXPORT_SYMBOL_GPL(ide_error);
+
+static inline void ide_complete_drive_reset(ide_drive_t *drive, int err)
+{
+	struct request *rq = drive->hwif->rq;
+
+	if (rq && blk_special_request(rq) && rq->cmd[0] == REQ_DRIVE_RESET)
+		ide_end_request(drive, err ? err : 1, 0);
+}
+
+/* needed below */
+static ide_startstop_t do_reset1(ide_drive_t *, int);
+
+/*
+ * atapi_reset_pollfunc() gets invoked to poll the interface for completion
+ * every 50ms during an atapi drive reset operation.  If the drive has not yet
+ * responded, and we have not yet hit our maximum waiting time, then the timer
+ * is restarted for another 50ms.
+ */
+static ide_startstop_t atapi_reset_pollfunc(ide_drive_t *drive)
+{
+	ide_hwif_t *hwif = drive->hwif;
+	u8 stat;
+
+	SELECT_DRIVE(drive);
+	udelay(10);
+	stat = hwif->tp_ops->read_status(hwif);
+
+	if (OK_STAT(stat, 0, ATA_BUSY))
+		printk(KERN_INFO "%s: ATAPI reset complete\n", drive->name);
+	else {
+		if (time_before(jiffies, hwif->poll_timeout)) {
+			ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20,
+					NULL);
+			/* continue polling */
+			return ide_started;
+		}
+		/* end of polling */
+		hwif->polling = 0;
+		printk(KERN_ERR "%s: ATAPI reset timed-out, status=0x%02x\n",
+			drive->name, stat);
+		/* do it the old fashioned way */
+		return do_reset1(drive, 1);
+	}
+	/* done polling */
+	hwif->polling = 0;
+	ide_complete_drive_reset(drive, 0);
+	return ide_stopped;
+}
+
+static void ide_reset_report_error(ide_hwif_t *hwif, u8 err)
+{
+	static const char *err_master_vals[] =
+		{ NULL, "passed", "formatter device error",
+		  "sector buffer error", "ECC circuitry error",
+		  "controlling MPU error" };
+
+	u8 err_master = err & 0x7f;
+
+	printk(KERN_ERR "%s: reset: master: ", hwif->name);
+	if (err_master && err_master < 6)
+		printk(KERN_CONT "%s", err_master_vals[err_master]);
+	else
+		printk(KERN_CONT "error (0x%02x?)", err);
+	if (err & 0x80)
+		printk(KERN_CONT "; slave: failed");
+	printk(KERN_CONT "\n");
+}
+
+/*
+ * reset_pollfunc() gets invoked to poll the interface for completion every 50ms
+ * during an ide reset operation. If the drives have not yet responded,
+ * and we have not yet hit our maximum waiting time, then the timer is restarted
+ * for another 50ms.
+ */
+static ide_startstop_t reset_pollfunc(ide_drive_t *drive)
+{
+	ide_hwif_t *hwif = drive->hwif;
+	const struct ide_port_ops *port_ops = hwif->port_ops;
+	u8 tmp;
+	int err = 0;
+
+	if (port_ops && port_ops->reset_poll) {
+		err = port_ops->reset_poll(drive);
+		if (err) {
+			printk(KERN_ERR "%s: host reset_poll failure for %s.\n",
+				hwif->name, drive->name);
+			goto out;
+		}
+	}
+
+	tmp = hwif->tp_ops->read_status(hwif);
+
+	if (!OK_STAT(tmp, 0, ATA_BUSY)) {
+		if (time_before(jiffies, hwif->poll_timeout)) {
+			ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL);
+			/* continue polling */
+			return ide_started;
+		}
+		printk(KERN_ERR "%s: reset timed-out, status=0x%02x\n",
+			hwif->name, tmp);
+		drive->failures++;
+		err = -EIO;
+	} else  {
+		tmp = ide_read_error(drive);
+
+		if (tmp == 1) {
+			printk(KERN_INFO "%s: reset: success\n", hwif->name);
+			drive->failures = 0;
+		} else {
+			ide_reset_report_error(hwif, tmp);
+			drive->failures++;
+			err = -EIO;
+		}
+	}
+out:
+	hwif->polling = 0;	/* done polling */
+	ide_complete_drive_reset(drive, err);
+	return ide_stopped;
+}
+
+static void ide_disk_pre_reset(ide_drive_t *drive)
+{
+	int legacy = (drive->id[ATA_ID_CFS_ENABLE_2] & 0x0400) ? 0 : 1;
+
+	drive->special.all = 0;
+	drive->special.b.set_geometry = legacy;
+	drive->special.b.recalibrate  = legacy;
+
+	drive->mult_count = 0;
+	drive->dev_flags &= ~IDE_DFLAG_PARKED;
+
+	if ((drive->dev_flags & IDE_DFLAG_KEEP_SETTINGS) == 0 &&
+	    (drive->dev_flags & IDE_DFLAG_USING_DMA) == 0)
+		drive->mult_req = 0;
+
+	if (drive->mult_req != drive->mult_count)
+		drive->special.b.set_multmode = 1;
+}
+
+static void pre_reset(ide_drive_t *drive)
+{
+	const struct ide_port_ops *port_ops = drive->hwif->port_ops;
+
+	if (drive->media == ide_disk)
+		ide_disk_pre_reset(drive);
+	else
+		drive->dev_flags |= IDE_DFLAG_POST_RESET;
+
+	if (drive->dev_flags & IDE_DFLAG_USING_DMA) {
+		if (drive->crc_count)
+			ide_check_dma_crc(drive);
+		else
+			ide_dma_off(drive);
+	}
+
+	if ((drive->dev_flags & IDE_DFLAG_KEEP_SETTINGS) == 0) {
+		if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0) {
+			drive->dev_flags &= ~IDE_DFLAG_UNMASK;
+			drive->io_32bit = 0;
+		}
+		return;
+	}
+
+	if (port_ops && port_ops->pre_reset)
+		port_ops->pre_reset(drive);
+
+	if (drive->current_speed != 0xff)
+		drive->desired_speed = drive->current_speed;
+	drive->current_speed = 0xff;
+}
+
+/*
+ * do_reset1() attempts to recover a confused drive by resetting it.
+ * Unfortunately, resetting a disk drive actually resets all devices on
+ * the same interface, so it can really be thought of as resetting the
+ * interface rather than resetting the drive.
+ *
+ * ATAPI devices have their own reset mechanism which allows them to be
+ * individually reset without clobbering other devices on the same interface.
+ *
+ * Unfortunately, the IDE interface does not generate an interrupt to let
+ * us know when the reset operation has finished, so we must poll for this.
+ * Equally poor, though, is the fact that this may a very long time to complete,
+ * (up to 30 seconds worstcase).  So, instead of busy-waiting here for it,
+ * we set a timer to poll at 50ms intervals.
+ */
+static ide_startstop_t do_reset1(ide_drive_t *drive, int do_not_try_atapi)
+{
+	ide_hwif_t *hwif = drive->hwif;
+	struct ide_io_ports *io_ports = &hwif->io_ports;
+	const struct ide_tp_ops *tp_ops = hwif->tp_ops;
+	const struct ide_port_ops *port_ops;
+	ide_drive_t *tdrive;
+	unsigned long flags, timeout;
+	int i;
+	DEFINE_WAIT(wait);
+
+	spin_lock_irqsave(&hwif->lock, flags);
+
+	/* We must not reset with running handlers */
+	BUG_ON(hwif->handler != NULL);
+
+	/* For an ATAPI device, first try an ATAPI SRST. */
+	if (drive->media != ide_disk && !do_not_try_atapi) {
+		pre_reset(drive);
+		SELECT_DRIVE(drive);
+		udelay(20);
+		tp_ops->exec_command(hwif, ATA_CMD_DEV_RESET);
+		ndelay(400);
+		hwif->poll_timeout = jiffies + WAIT_WORSTCASE;
+		hwif->polling = 1;
+		__ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL);
+		spin_unlock_irqrestore(&hwif->lock, flags);
+		return ide_started;
+	}
+
+	/* We must not disturb devices in the IDE_DFLAG_PARKED state. */
+	do {
+		unsigned long now;
+
+		prepare_to_wait(&ide_park_wq, &wait, TASK_UNINTERRUPTIBLE);
+		timeout = jiffies;
+		ide_port_for_each_present_dev(i, tdrive, hwif) {
+			if ((tdrive->dev_flags & IDE_DFLAG_PARKED) &&
+			    time_after(tdrive->sleep, timeout))
+				timeout = tdrive->sleep;
+		}
+
+		now = jiffies;
+		if (time_before_eq(timeout, now))
+			break;
+
+		spin_unlock_irqrestore(&hwif->lock, flags);
+		timeout = schedule_timeout_uninterruptible(timeout - now);
+		spin_lock_irqsave(&hwif->lock, flags);
+	} while (timeout);
+	finish_wait(&ide_park_wq, &wait);
+
+	/*
+	 * First, reset any device state data we were maintaining
+	 * for any of the drives on this interface.
+	 */
+	ide_port_for_each_dev(i, tdrive, hwif)
+		pre_reset(tdrive);
+
+	if (io_ports->ctl_addr == 0) {
+		spin_unlock_irqrestore(&hwif->lock, flags);
+		ide_complete_drive_reset(drive, -ENXIO);
+		return ide_stopped;
+	}
+
+	/*
+	 * Note that we also set nIEN while resetting the device,
+	 * to mask unwanted interrupts from the interface during the reset.
+	 * However, due to the design of PC hardware, this will cause an
+	 * immediate interrupt due to the edge transition it produces.
+	 * This single interrupt gives us a "fast poll" for drives that
+	 * recover from reset very quickly, saving us the first 50ms wait time.
+	 *
+	 * TODO: add ->softreset method and stop abusing ->set_irq
+	 */
+	/* set SRST and nIEN */
+	tp_ops->set_irq(hwif, 4);
+	/* more than enough time */
+	udelay(10);
+	/* clear SRST, leave nIEN (unless device is on the quirk list) */
+	tp_ops->set_irq(hwif, drive->quirk_list == 2);
+	/* more than enough time */
+	udelay(10);
+	hwif->poll_timeout = jiffies + WAIT_WORSTCASE;
+	hwif->polling = 1;
+	__ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL);
+
+	/*
+	 * Some weird controller like resetting themselves to a strange
+	 * state when the disks are reset this way. At least, the Winbond
+	 * 553 documentation says that
+	 */
+	port_ops = hwif->port_ops;
+	if (port_ops && port_ops->resetproc)
+		port_ops->resetproc(drive);
+
+	spin_unlock_irqrestore(&hwif->lock, flags);
+	return ide_started;
+}
+
+/*
+ * ide_do_reset() is the entry point to the drive/interface reset code.
+ */
+
+ide_startstop_t ide_do_reset(ide_drive_t *drive)
+{
+	return do_reset1(drive, 0);
+}
+EXPORT_SYMBOL(ide_do_reset);
Index: b/drivers/ide/ide-io.c
===================================================================
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -196,7 +196,7 @@ void ide_end_drive_cmd (ide_drive_t *dri
 }
 EXPORT_SYMBOL(ide_end_drive_cmd);
 
-static void ide_kill_rq(ide_drive_t *drive, struct request *rq)
+void ide_kill_rq(ide_drive_t *drive, struct request *rq)
 {
 	if (rq->rq_disk) {
 		struct ide_driver *drv;
@@ -207,133 +207,6 @@ static void ide_kill_rq(ide_drive_t *dri
 		ide_end_request(drive, 0, 0);
 }
 
-static ide_startstop_t ide_ata_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err)
-{
-	ide_hwif_t *hwif = drive->hwif;
-
-	if ((stat & ATA_BUSY) ||
-	    ((stat & ATA_DF) && (drive->dev_flags & IDE_DFLAG_NOWERR) == 0)) {
-		/* other bits are useless when BUSY */
-		rq->errors |= ERROR_RESET;
-	} else if (stat & ATA_ERR) {
-		/* err has different meaning on cdrom and tape */
-		if (err == ATA_ABORTED) {
-			if ((drive->dev_flags & IDE_DFLAG_LBA) &&
-			    /* some newer drives don't support ATA_CMD_INIT_DEV_PARAMS */
-			    hwif->tp_ops->read_status(hwif) == ATA_CMD_INIT_DEV_PARAMS)
-				return ide_stopped;
-		} else if ((err & BAD_CRC) == BAD_CRC) {
-			/* UDMA crc error, just retry the operation */
-			drive->crc_count++;
-		} else if (err & (ATA_BBK | ATA_UNC)) {
-			/* retries won't help these */
-			rq->errors = ERROR_MAX;
-		} else if (err & ATA_TRK0NF) {
-			/* help it find track zero */
-			rq->errors |= ERROR_RECAL;
-		}
-	}
-
-	if ((stat & ATA_DRQ) && rq_data_dir(rq) == READ &&
-	    (hwif->host_flags & IDE_HFLAG_ERROR_STOPS_FIFO) == 0) {
-		int nsect = drive->mult_count ? drive->mult_count : 1;
-
-		ide_pad_transfer(drive, READ, nsect * SECTOR_SIZE);
-	}
-
-	if (rq->errors >= ERROR_MAX || blk_noretry_request(rq)) {
-		ide_kill_rq(drive, rq);
-		return ide_stopped;
-	}
-
-	if (hwif->tp_ops->read_status(hwif) & (ATA_BUSY | ATA_DRQ))
-		rq->errors |= ERROR_RESET;
-
-	if ((rq->errors & ERROR_RESET) == ERROR_RESET) {
-		++rq->errors;
-		return ide_do_reset(drive);
-	}
-
-	if ((rq->errors & ERROR_RECAL) == ERROR_RECAL)
-		drive->special.b.recalibrate = 1;
-
-	++rq->errors;
-
-	return ide_stopped;
-}
-
-static ide_startstop_t ide_atapi_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err)
-{
-	ide_hwif_t *hwif = drive->hwif;
-
-	if ((stat & ATA_BUSY) ||
-	    ((stat & ATA_DF) && (drive->dev_flags & IDE_DFLAG_NOWERR) == 0)) {
-		/* other bits are useless when BUSY */
-		rq->errors |= ERROR_RESET;
-	} else {
-		/* add decoding error stuff */
-	}
-
-	if (hwif->tp_ops->read_status(hwif) & (ATA_BUSY | ATA_DRQ))
-		/* force an abort */
-		hwif->tp_ops->exec_command(hwif, ATA_CMD_IDLEIMMEDIATE);
-
-	if (rq->errors >= ERROR_MAX) {
-		ide_kill_rq(drive, rq);
-	} else {
-		if ((rq->errors & ERROR_RESET) == ERROR_RESET) {
-			++rq->errors;
-			return ide_do_reset(drive);
-		}
-		++rq->errors;
-	}
-
-	return ide_stopped;
-}
-
-static ide_startstop_t
-__ide_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err)
-{
-	if (drive->media == ide_disk)
-		return ide_ata_error(drive, rq, stat, err);
-	return ide_atapi_error(drive, rq, stat, err);
-}
-
-/**
- *	ide_error	-	handle an error on the IDE
- *	@drive: drive the error occurred on
- *	@msg: message to report
- *	@stat: status bits
- *
- *	ide_error() takes action based on the error returned by the drive.
- *	For normal I/O that may well include retries. We deal with
- *	both new-style (taskfile) and old style command handling here.
- *	In the case of taskfile command handling there is work left to
- *	do
- */
- 
-ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, u8 stat)
-{
-	struct request *rq;
-	u8 err;
-
-	err = ide_dump_status(drive, msg, stat);
-
-	rq = drive->hwif->rq;
-	if (rq == NULL)
-		return ide_stopped;
-
-	/* retry only "normal" I/O: */
-	if (!blk_fs_request(rq)) {
-		rq->errors = 1;
-		ide_end_drive_cmd(drive, stat, err);
-		return ide_stopped;
-	}
-
-	return __ide_error(drive, rq, stat, err);
-}
-EXPORT_SYMBOL_GPL(ide_error);
-
 static void ide_tf_set_specify_cmd(ide_drive_t *drive, struct ide_taskfile *tf)
 {
 	tf->nsect   = drive->sect;
Index: b/drivers/ide/ide-iops.c
===================================================================
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -446,8 +446,8 @@ int ide_config_drive_speed(ide_drive_t *
  *
  * See also ide_execute_command
  */
-static void __ide_set_handler (ide_drive_t *drive, ide_handler_t *handler,
-		      unsigned int timeout, ide_expiry_t *expiry)
+void __ide_set_handler(ide_drive_t *drive, ide_handler_t *handler,
+		       unsigned int timeout, ide_expiry_t *expiry)
 {
 	ide_hwif_t *hwif = drive->hwif;
 
@@ -517,301 +517,6 @@ void ide_execute_pkt_cmd(ide_drive_t *dr
 }
 EXPORT_SYMBOL_GPL(ide_execute_pkt_cmd);
 
-static inline void ide_complete_drive_reset(ide_drive_t *drive, int err)
-{
-	struct request *rq = drive->hwif->rq;
-
-	if (rq && blk_special_request(rq) && rq->cmd[0] == REQ_DRIVE_RESET)
-		ide_end_request(drive, err ? err : 1, 0);
-}
-
-/* needed below */
-static ide_startstop_t do_reset1(ide_drive_t *, int);
-
-/*
- * atapi_reset_pollfunc() gets invoked to poll the interface for completion
- * every 50ms during an atapi drive reset operation.  If the drive has not yet
- * responded, and we have not yet hit our maximum waiting time, then the timer
- * is restarted for another 50ms.
- */
-static ide_startstop_t atapi_reset_pollfunc(ide_drive_t *drive)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	u8 stat;
-
-	SELECT_DRIVE(drive);
-	udelay(10);
-	stat = hwif->tp_ops->read_status(hwif);
-
-	if (OK_STAT(stat, 0, ATA_BUSY))
-		printk(KERN_INFO "%s: ATAPI reset complete\n", drive->name);
-	else {
-		if (time_before(jiffies, hwif->poll_timeout)) {
-			ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20,
-					NULL);
-			/* continue polling */
-			return ide_started;
-		}
-		/* end of polling */
-		hwif->polling = 0;
-		printk(KERN_ERR "%s: ATAPI reset timed-out, status=0x%02x\n",
-			drive->name, stat);
-		/* do it the old fashioned way */
-		return do_reset1(drive, 1);
-	}
-	/* done polling */
-	hwif->polling = 0;
-	ide_complete_drive_reset(drive, 0);
-	return ide_stopped;
-}
-
-static void ide_reset_report_error(ide_hwif_t *hwif, u8 err)
-{
-	static const char *err_master_vals[] =
-		{ NULL, "passed", "formatter device error",
-		  "sector buffer error", "ECC circuitry error",
-		  "controlling MPU error" };
-
-	u8 err_master = err & 0x7f;
-
-	printk(KERN_ERR "%s: reset: master: ", hwif->name);
-	if (err_master && err_master < 6)
-		printk(KERN_CONT "%s", err_master_vals[err_master]);
-	else
-		printk(KERN_CONT "error (0x%02x?)", err);
-	if (err & 0x80)
-		printk(KERN_CONT "; slave: failed");
-	printk(KERN_CONT "\n");
-}
-
-/*
- * reset_pollfunc() gets invoked to poll the interface for completion every 50ms
- * during an ide reset operation. If the drives have not yet responded,
- * and we have not yet hit our maximum waiting time, then the timer is restarted
- * for another 50ms.
- */
-static ide_startstop_t reset_pollfunc(ide_drive_t *drive)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	const struct ide_port_ops *port_ops = hwif->port_ops;
-	u8 tmp;
-	int err = 0;
-
-	if (port_ops && port_ops->reset_poll) {
-		err = port_ops->reset_poll(drive);
-		if (err) {
-			printk(KERN_ERR "%s: host reset_poll failure for %s.\n",
-				hwif->name, drive->name);
-			goto out;
-		}
-	}
-
-	tmp = hwif->tp_ops->read_status(hwif);
-
-	if (!OK_STAT(tmp, 0, ATA_BUSY)) {
-		if (time_before(jiffies, hwif->poll_timeout)) {
-			ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL);
-			/* continue polling */
-			return ide_started;
-		}
-		printk(KERN_ERR "%s: reset timed-out, status=0x%02x\n",
-			hwif->name, tmp);
-		drive->failures++;
-		err = -EIO;
-	} else  {
-		tmp = ide_read_error(drive);
-
-		if (tmp == 1) {
-			printk(KERN_INFO "%s: reset: success\n", hwif->name);
-			drive->failures = 0;
-		} else {
-			ide_reset_report_error(hwif, tmp);
-			drive->failures++;
-			err = -EIO;
-		}
-	}
-out:
-	hwif->polling = 0;	/* done polling */
-	ide_complete_drive_reset(drive, err);
-	return ide_stopped;
-}
-
-static void ide_disk_pre_reset(ide_drive_t *drive)
-{
-	int legacy = (drive->id[ATA_ID_CFS_ENABLE_2] & 0x0400) ? 0 : 1;
-
-	drive->special.all = 0;
-	drive->special.b.set_geometry = legacy;
-	drive->special.b.recalibrate  = legacy;
-
-	drive->mult_count = 0;
-	drive->dev_flags &= ~IDE_DFLAG_PARKED;
-
-	if ((drive->dev_flags & IDE_DFLAG_KEEP_SETTINGS) == 0 &&
-	    (drive->dev_flags & IDE_DFLAG_USING_DMA) == 0)
-		drive->mult_req = 0;
-
-	if (drive->mult_req != drive->mult_count)
-		drive->special.b.set_multmode = 1;
-}
-
-static void pre_reset(ide_drive_t *drive)
-{
-	const struct ide_port_ops *port_ops = drive->hwif->port_ops;
-
-	if (drive->media == ide_disk)
-		ide_disk_pre_reset(drive);
-	else
-		drive->dev_flags |= IDE_DFLAG_POST_RESET;
-
-	if (drive->dev_flags & IDE_DFLAG_USING_DMA) {
-		if (drive->crc_count)
-			ide_check_dma_crc(drive);
-		else
-			ide_dma_off(drive);
-	}
-
-	if ((drive->dev_flags & IDE_DFLAG_KEEP_SETTINGS) == 0) {
-		if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0) {
-			drive->dev_flags &= ~IDE_DFLAG_UNMASK;
-			drive->io_32bit = 0;
-		}
-		return;
-	}
-
-	if (port_ops && port_ops->pre_reset)
-		port_ops->pre_reset(drive);
-
-	if (drive->current_speed != 0xff)
-		drive->desired_speed = drive->current_speed;
-	drive->current_speed = 0xff;
-}
-
-/*
- * do_reset1() attempts to recover a confused drive by resetting it.
- * Unfortunately, resetting a disk drive actually resets all devices on
- * the same interface, so it can really be thought of as resetting the
- * interface rather than resetting the drive.
- *
- * ATAPI devices have their own reset mechanism which allows them to be
- * individually reset without clobbering other devices on the same interface.
- *
- * Unfortunately, the IDE interface does not generate an interrupt to let
- * us know when the reset operation has finished, so we must poll for this.
- * Equally poor, though, is the fact that this may a very long time to complete,
- * (up to 30 seconds worstcase).  So, instead of busy-waiting here for it,
- * we set a timer to poll at 50ms intervals.
- */
-static ide_startstop_t do_reset1(ide_drive_t *drive, int do_not_try_atapi)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	struct ide_io_ports *io_ports = &hwif->io_ports;
-	const struct ide_tp_ops *tp_ops = hwif->tp_ops;
-	const struct ide_port_ops *port_ops;
-	ide_drive_t *tdrive;
-	unsigned long flags, timeout;
-	int i;
-	DEFINE_WAIT(wait);
-
-	spin_lock_irqsave(&hwif->lock, flags);
-
-	/* We must not reset with running handlers */
-	BUG_ON(hwif->handler != NULL);
-
-	/* For an ATAPI device, first try an ATAPI SRST. */
-	if (drive->media != ide_disk && !do_not_try_atapi) {
-		pre_reset(drive);
-		SELECT_DRIVE(drive);
-		udelay(20);
-		tp_ops->exec_command(hwif, ATA_CMD_DEV_RESET);
-		ndelay(400);
-		hwif->poll_timeout = jiffies + WAIT_WORSTCASE;
-		hwif->polling = 1;
-		__ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL);
-		spin_unlock_irqrestore(&hwif->lock, flags);
-		return ide_started;
-	}
-
-	/* We must not disturb devices in the IDE_DFLAG_PARKED state. */
-	do {
-		unsigned long now;
-
-		prepare_to_wait(&ide_park_wq, &wait, TASK_UNINTERRUPTIBLE);
-		timeout = jiffies;
-		ide_port_for_each_present_dev(i, tdrive, hwif) {
-			if ((tdrive->dev_flags & IDE_DFLAG_PARKED) &&
-			    time_after(tdrive->sleep, timeout))
-				timeout = tdrive->sleep;
-		}
-
-		now = jiffies;
-		if (time_before_eq(timeout, now))
-			break;
-
-		spin_unlock_irqrestore(&hwif->lock, flags);
-		timeout = schedule_timeout_uninterruptible(timeout - now);
-		spin_lock_irqsave(&hwif->lock, flags);
-	} while (timeout);
-	finish_wait(&ide_park_wq, &wait);
-
-	/*
-	 * First, reset any device state data we were maintaining
-	 * for any of the drives on this interface.
-	 */
-	ide_port_for_each_dev(i, tdrive, hwif)
-		pre_reset(tdrive);
-
-	if (io_ports->ctl_addr == 0) {
-		spin_unlock_irqrestore(&hwif->lock, flags);
-		ide_complete_drive_reset(drive, -ENXIO);
-		return ide_stopped;
-	}
-
-	/*
-	 * Note that we also set nIEN while resetting the device,
-	 * to mask unwanted interrupts from the interface during the reset.
-	 * However, due to the design of PC hardware, this will cause an
-	 * immediate interrupt due to the edge transition it produces.
-	 * This single interrupt gives us a "fast poll" for drives that
-	 * recover from reset very quickly, saving us the first 50ms wait time.
-	 *
-	 * TODO: add ->softreset method and stop abusing ->set_irq
-	 */
-	/* set SRST and nIEN */
-	tp_ops->set_irq(hwif, 4);
-	/* more than enough time */
-	udelay(10);
-	/* clear SRST, leave nIEN (unless device is on the quirk list) */
-	tp_ops->set_irq(hwif, drive->quirk_list == 2);
-	/* more than enough time */
-	udelay(10);
-	hwif->poll_timeout = jiffies + WAIT_WORSTCASE;
-	hwif->polling = 1;
-	__ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL);
-
-	/*
-	 * Some weird controller like resetting themselves to a strange
-	 * state when the disks are reset this way. At least, the Winbond
-	 * 553 documentation says that
-	 */
-	port_ops = hwif->port_ops;
-	if (port_ops && port_ops->resetproc)
-		port_ops->resetproc(drive);
-
-	spin_unlock_irqrestore(&hwif->lock, flags);
-	return ide_started;
-}
-
-/*
- * ide_do_reset() is the entry point to the drive/interface reset code.
- */
-
-ide_startstop_t ide_do_reset(ide_drive_t *drive)
-{
-	return do_reset1(drive, 0);
-}
-EXPORT_SYMBOL(ide_do_reset);
-
 /*
  * ide_wait_not_busy() waits for the currently selected device on the hwif
  * to report a non-busy status, see comments in ide_probe_port().
Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1144,11 +1144,14 @@ int generic_ide_ioctl(ide_drive_t *, str
 extern int ide_vlb_clk;
 extern int ide_pci_clk;
 
-extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
-int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
-			     int uptodate, int nr_sectors);
-
-extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
+int ide_end_request(ide_drive_t *, int, int);
+int ide_end_dequeued_request(ide_drive_t *, struct request *, int, int);
+void ide_kill_rq(ide_drive_t *, struct request *);
+
+void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int,
+		       ide_expiry_t *);
+void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int,
+		     ide_expiry_t *);
 
 void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
 			 ide_expiry_t *);

Re: [PATCH 2/6] ide: move SFF I/O code to ide-io-sff.c

[Sergei Shtylyov]

Bartlomiej Zolnierkiewicz wrote:

> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

    Gah, what in the world is that SFF I/O code?

> Index: b/drivers/ide/ide-io-sff.c
> ===================================================================
> --- /dev/null
> +++ b/drivers/ide/ide-io-sff.c
> @@ -0,0 +1,314 @@
> +
> +#include <linux/kernel.h>
> +#include <linux/ide.h>
> +
> +/*
> + *	Conventional PIO operations for ATA devices
> + */
> +
> +static u8 ide_inb(unsigned long port)
> +{
> +	return (u8) inb(port);
> +}
> +
> +static void ide_outb(u8 val, unsigned long port)
> +{
> +	outb(val, port);
> +}
> +
> +/*
> + *	MMIO operations, typically used for SATA controllers
> + */
> +
> +static u8 ide_mm_inb(unsigned long port)
> +{
> +	return (u8) readb((void __iomem *) port);
> +}
> +
> +static void ide_mm_outb(u8 value, unsigned long port)
> +{
> +	writeb(value, (void __iomem *) port);
> +}

    Ah, I see. Can we finally stop abusing the SFF name? Or are we bound to 
copy every mistake that libata has made? :-/

MBR, Sergei

Re: [PATCH 0/6] ide: more core code housekeeping

[Sergei Shtylyov]

Bartlomiej Zolnierkiewicz wrote:

> SFF I/O code goes to ide-io-sff.c and error handling to ide-eh.c...

    There's no such thing as SFF I/O code I'm afraid -- whatever libata 
authors might think...

MBR, Sergei

Re: [PATCH 2/6] ide: move SFF I/O code to ide-io-sff.c

[Bartlomiej Zolnierkiewicz]

On Monday 19 January 2009, Sergei Shtylyov wrote:
> Bartlomiej Zolnierkiewicz wrote:
> 
> > Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
> 
>     Gah, what in the world is that SFF I/O code?
> 
> > Index: b/drivers/ide/ide-io-sff.c
> > ===================================================================
> > --- /dev/null
> > +++ b/drivers/ide/ide-io-sff.c
> > @@ -0,0 +1,314 @@
> > +
> > +#include <linux/kernel.h>
> > +#include <linux/ide.h>
> > +
> > +/*
> > + *	Conventional PIO operations for ATA devices
> > + */
> > +
> > +static u8 ide_inb(unsigned long port)
> > +{
> > +	return (u8) inb(port);
> > +}
> > +
> > +static void ide_outb(u8 val, unsigned long port)
> > +{
> > +	outb(val, port);
> > +}
> > +
> > +/*
> > + *	MMIO operations, typically used for SATA controllers
> > + */
> > +
> > +static u8 ide_mm_inb(unsigned long port)
> > +{
> > +	return (u8) readb((void __iomem *) port);
> > +}
> > +
> > +static void ide_mm_outb(u8 value, unsigned long port)
> > +{
> > +	writeb(value, (void __iomem *) port);
> > +}
> 
>     Ah, I see. Can we finally stop abusing the SFF name? Or are we bound to 
> copy every mistake that libata has made? :-/

Please suggest a better name. :)

[ I'm also not happy with the naming but couldn't think of a better one. ]

Re: [PATCH 4/6] ide: fix comments in ide_config_drive_speed()

[Sergei Shtylyov]

Bartlomiej Zolnierkiewicz wrote:

> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>

Re: [PATCH 3/6] ide: fix printk() levels in [atapi_]reset_pollfunc()

[Sergei Shtylyov]

Bartlomiej Zolnierkiewicz wrote:

> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>

MBR, Sergei

Re: [PATCH 2/6] ide: move SFF I/O code to ide-io-sff.c

[Sergei Shtylyov]

Bartlomiej Zolnierkiewicz wrote:

>>>Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

>>    Gah, what in the world is that SFF I/O code?

>>>Index: b/drivers/ide/ide-io-sff.c
>>>===================================================================
>>>--- /dev/null
>>>+++ b/drivers/ide/ide-io-sff.c
>>>@@ -0,0 +1,314 @@
>>>+
>>>+#include <linux/kernel.h>
>>>+#include <linux/ide.h>
>>>+
>>>+/*
>>>+ *	Conventional PIO operations for ATA devices
>>>+ */
>>>+
>>>+static u8 ide_inb(unsigned long port)
>>>+{
>>>+	return (u8) inb(port);
>>>+}
>>>+
>>>+static void ide_outb(u8 val, unsigned long port)
>>>+{
>>>+	outb(val, port);
>>>+}
>>>+
>>>+/*
>>>+ *	MMIO operations, typically used for SATA controllers
>>>+ */
>>>+
>>>+static u8 ide_mm_inb(unsigned long port)
>>>+{
>>>+	return (u8) readb((void __iomem *) port);
>>>+}
>>>+
>>>+static void ide_mm_outb(u8 value, unsigned long port)
>>>+{
>>>+	writeb(value, (void __iomem *) port);
>>>+}

>>    Ah, I see. Can we finally stop abusing the SFF name? Or are we bound to 
>>copy every mistake that libata has made? :-/

> Please suggest a better name. :)

> [ I'm also not happy with the naming but couldn't think of a better one. ]

    Legacy perhaps?

WBR, Sergei

Re: [PATCH 2/6] ide: move SFF I/O code to ide-io-sff.c

[Sergei Shtylyov]

Hello, I wrote:

>>>> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

>>>    Gah, what in the world is that SFF I/O code?

>>>> Index: b/drivers/ide/ide-io-sff.c
>>>> ===================================================================
>>>> --- /dev/null
>>>> +++ b/drivers/ide/ide-io-sff.c
>>>> @@ -0,0 +1,314 @@
>>>> +
>>>> +#include <linux/kernel.h>
>>>> +#include <linux/ide.h>
>>>> +
>>>> +/*
>>>> + *    Conventional PIO operations for ATA devices
>>>> + */
>>>> +
>>>> +static u8 ide_inb(unsigned long port)
>>>> +{
>>>> +    return (u8) inb(port);
>>>> +}
>>>> +
>>>> +static void ide_outb(u8 val, unsigned long port)
>>>> +{
>>>> +    outb(val, port);
>>>> +}
>>>> +
>>>> +/*
>>>> + *    MMIO operations, typically used for SATA controllers
>>>> + */
>>>> +
>>>> +static u8 ide_mm_inb(unsigned long port)
>>>> +{
>>>> +    return (u8) readb((void __iomem *) port);
>>>> +}
>>>> +
>>>> +static void ide_mm_outb(u8 value, unsigned long port)
>>>> +{
>>>> +    writeb(value, (void __iomem *) port);
>>>> +}

>>>    Ah, I see. Can we finally stop abusing the SFF name? Or are we 
>>> bound to copy every mistake that libata has made? :-/

>> Please suggest a better name. :)

>> [ I'm also not happy with the naming but couldn't think of a better 
>> one. ]

>    Legacy perhaps?

    As in ide-io-legacy.c. I can also suggest ide-io-std.c, 
ide-io-trad[itional].c...

MBR, Sergei

Re: [PATCH 2/6] ide: move SFF I/O code to ide-io-sff.c

[Bartlomiej Zolnierkiewicz]

On Monday 19 January 2009, Sergei Shtylyov wrote:
> Hello, I wrote:
> 
> >>>> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
> 
> >>>    Gah, what in the world is that SFF I/O code?
> 
> >>>> Index: b/drivers/ide/ide-io-sff.c
> >>>> ===================================================================
> >>>> --- /dev/null
> >>>> +++ b/drivers/ide/ide-io-sff.c
> >>>> @@ -0,0 +1,314 @@
> >>>> +
> >>>> +#include <linux/kernel.h>
> >>>> +#include <linux/ide.h>
> >>>> +
> >>>> +/*
> >>>> + *    Conventional PIO operations for ATA devices
> >>>> + */
> >>>> +
> >>>> +static u8 ide_inb(unsigned long port)
> >>>> +{
> >>>> +    return (u8) inb(port);
> >>>> +}
> >>>> +
> >>>> +static void ide_outb(u8 val, unsigned long port)
> >>>> +{
> >>>> +    outb(val, port);
> >>>> +}
> >>>> +
> >>>> +/*
> >>>> + *    MMIO operations, typically used for SATA controllers
> >>>> + */
> >>>> +
> >>>> +static u8 ide_mm_inb(unsigned long port)
> >>>> +{
> >>>> +    return (u8) readb((void __iomem *) port);
> >>>> +}
> >>>> +
> >>>> +static void ide_mm_outb(u8 value, unsigned long port)
> >>>> +{
> >>>> +    writeb(value, (void __iomem *) port);
> >>>> +}
> 
> >>>    Ah, I see. Can we finally stop abusing the SFF name? Or are we 
> >>> bound to copy every mistake that libata has made? :-/
> 
> >> Please suggest a better name. :)
> 
> >> [ I'm also not happy with the naming but couldn't think of a better 
> >> one. ]
> 
> >    Legacy perhaps?
> 
>     As in ide-io-legacy.c. I can also suggest ide-io-std.c, 
> ide-io-trad[itional].c...

ide-io-std.c sounds good to me.  I'll recast the patch before merging it.

Re: [PATCH 2/6] ide: move SFF I/O code to ide-io-sff.c

[Sergei Shtylyov]

Bartlomiej Zolnierkiewicz wrote:

> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>


Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>

based on the promised file rename. :-)

> Index: b/drivers/ide/ide-io-sff.c
> ===================================================================
> --- /dev/null
> +++ b/drivers/ide/ide-io-sff.c
> @@ -0,0 +1,314 @@
> +
> +#include <linux/kernel.h>
> +#include <linux/ide.h>
> +
> +/*
> + *	Conventional PIO operations for ATA devices
> + */
> +
> +static u8 ide_inb(unsigned long port)
> +{
> +	return (u8) inb(port);
> +}
> +
> +static void ide_outb(u8 val, unsigned long port)
> +{
> +	outb(val, port);
> +}
> +
> +/*
> + *	MMIO operations, typically used for SATA controllers
> + */
> +
> +static u8 ide_mm_inb(unsigned long port)
> +{
> +	return (u8) readb((void __iomem *) port);
> +}
> +
> +static void ide_mm_outb(u8 value, unsigned long port)
> +{
> +	writeb(value, (void __iomem *) port);
> +}


    Inconsistent spacing in the type casts: space present everywhere above, 
absent everywhere below...

> +void ide_set_irq(ide_hwif_t *hwif, int on)
> +{
> +	u8 ctl = ATA_DEVCTL_OBS;
> +
> +	if (on == 4) { /* hack for SRST */
> +		ctl |= 4;
> +		on &= ~4;
> +	}
> +
> +	ctl |= on ? 0 : 2;
> +
> +	if (hwif->host_flags & IDE_HFLAG_MMIO)
> +		writeb(ctl, (void __iomem *)hwif->io_ports.ctl_addr);
> +	else
> +		outb(ctl, hwif->io_ports.ctl_addr);
> +}
> +EXPORT_SYMBOL_GPL(ide_set_irq);

    Ugh, I really need to convert set_irq() to write_devctl(), it's a pity I 
hasn't done it still...

> +/*
> + * Some localbus EIDE interfaces require a special access sequence
> + * when using 32-bit I/O instructions to transfer data.  We call this
> + * the "vlb_sync" sequence, which consists of three successive reads
> + * of the sector count register location, with interrupts disabled
> + * to ensure that the reads all happen together.
> + */
> +static void ata_vlb_sync(unsigned long port)

    Not clear why this has ata_ prefix...

> +{
> +	(void)inb(port);
> +	(void)inb(port);
> +	(void)inb(port);
> +}
> +
> +/*
> + * This is used for most PIO data transfers *from* the IDE interface
> + *
> + * These routines will round up any request for an odd number of bytes,
> + * so if an odd len is specified, be sure that there's at least one
> + * extra byte allocated for the buffer.
> + */
> +void ide_input_data(ide_drive_t *drive, struct request *rq, void *buf,
> +		    unsigned int len)
> +{
> +	ide_hwif_t *hwif = drive->hwif;
> +	struct ide_io_ports *io_ports = &hwif->io_ports;
> +	unsigned long data_addr = io_ports->data_addr;
> +	u8 io_32bit = drive->io_32bit;
> +	u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
> +
> +	len++;
> +
> +	if (io_32bit) {
> +		unsigned long uninitialized_var(flags);
> +
> +		if ((io_32bit & 2) && !mmio) {
> +			local_irq_save(flags);
> +			ata_vlb_sync(io_ports->nsect_addr);
> +		}
> +
> +		if (mmio)
> +			__ide_mm_insl((void __iomem *)data_addr, buf, len / 4);

    It's not clear why we're not using readsl()...

> +		else
> +			insl(data_addr, buf, len / 4);
> +
> +		if ((io_32bit & 2) && !mmio)
> +			local_irq_restore(flags);
> +
> +		if ((len & 3) >= 2) {
> +			if (mmio)
> +				__ide_mm_insw((void __iomem *)data_addr,
> +						(u8 *)buf + (len & ~3), 1);

    ... ans readsw(). Ah, some archs do cache flushes around reads[wl]().
Besides, I doubt that the definitions in include/asm-generic/ide_iops.h are 
correct as they use read[wl]() in a loop which may not fly on BE...

MBR, Sergei

Re: [PATCH 2/6] ide: move SFF I/O code to ide-io-sff.c

[Alan Cox]

> > [ I'm also not happy with the naming but couldn't think of a better one. ]
> 
>     Legacy perhaps?

Legacy to most people means either ISA/VLB or the PCI legacy
compatibility mode so that would be confusing.

BTW if you moved to ioreadX you could get rid of almost all the readb/inb
special casing.

Re: [PATCH 2/6] ide: move SFF I/O code to ide-io-sff.c

[Sergei Shtylyov]

Hello.

Alan Cox wrote:

>>>[ I'm also not happy with the naming but couldn't think of a better one. ]

>>    Legacy perhaps?

> Legacy to most people means either ISA/VLB or the PCI legacy
> compatibility mode so that would be confusing.

    That's what this code is for (minus the MMIO accessors perhaps).

> BTW if you moved to ioreadX you could get rid of almost all the readb/inb
> special casing.

    And burden the driver code with function calls ISO in/out instructions, at 
least on x86. It's somewhat arguable move.

MBR, Sergei

Re: [PATCH 2/6] ide: move SFF I/O code to ide-io-sff.c

[Alan Cox]

> > BTW if you moved to ioreadX you could get rid of almost all the readb/inb
> > special casing.
> 
>     And burden the driver code with function calls ISO in/out instructions, at 
> least on x86. It's somewhat arguable move.

And exactly how do you think the IDE accessors in the file get called ?
It's already making function calls, without the benefit of inlining and
sharing common paths across architectures that can handle more than just
PIO v MMIO but also other addressing modes.

Re: [PATCH 2/6] ide: move SFF I/O code to ide-io-sff.c

[Sergei Shtylyov]

Alan Cox wrote:

>>>BTW if you moved to ioreadX you could get rid of almost all the readb/inb
>>>special casing.

>>    And burden the driver code with function calls ISO in/out instructions, at 
>>least on x86. It's somewhat arguable move.

> And exactly how do you think the IDE accessors in the file get called ?

    Tried looking at how in*()/out*() are defined on x86?

> It's already making function calls, without the benefit of inlining and

    I'm afraid you're wrong here.

MBR, Sergei

Re: [PATCH 2/6] ide: move SFF I/O code to ide-io-sff.c

[Alan Cox]

>     Tried looking at how in*()/out*() are defined on x86?

Tried looking at how ide_mm_inb is defined on x86

> > It's already making function calls, without the benefit of inlining and
> 
>     I'm afraid you're wrong here.

I'm afraid you are the one who is wrong. The IDE layer is duplicating a
generic level of indirection with its own code - purely because IDE
pre-dates that core functionality. The whole IDE layer indirection can go
away because Linux has caught up with the needs of the IDE layer.

Alan

Re: [PATCH 2/6] ide: move SFF I/O code to ide-io-sff.c

[Sergei Shtylyov]

Alan Cox wrote:

>>    Tried looking at how in*()/out*() are defined on x86?

> Tried looking at how ide_mm_inb is defined on x86

    That's a bogus argument because:
- MMIO isn't much used by the IDE drivers much (normally the inline
   ins*()/outs*() accessors are used;
- that's used only by generic IDE code, not by the drivers about which
   I'veargued;

I've already agreed that the generic code would probably win from using 
ioread*()/iowrite*().

>>>It's already making function calls, without the benefit of inlining and

>>    I'm afraid you're wrong here.

> I'm afraid you are the one who is wrong. The IDE layer is duplicating a
> generic level of indirection with its own code - purely because IDE
> pre-dates that core functionality. The whole IDE layer indirection can go
> away because Linux has caught up with the needs of the IDE layer.

    What IDE indirection you're talking about anyway?

> Alan

MBR, Sergei

Re: [PATCH 2/6] ide: move SFF I/O code to ide-io-sff.c

[Bartlomiej Zolnierkiewicz]

On Monday 19 January 2009, Alan Cox wrote:
> >     Tried looking at how in*()/out*() are defined on x86?
> 
> Tried looking at how ide_mm_inb is defined on x86
> 
> > > It's already making function calls, without the benefit of inlining and
> > 
> >     I'm afraid you're wrong here.
> 
> I'm afraid you are the one who is wrong. The IDE layer is duplicating a
> generic level of indirection with its own code - purely because IDE
> pre-dates that core functionality. The whole IDE layer indirection can go
> away because Linux has caught up with the needs of the IDE layer.

I wish it would be so simple as I would have removed the said indirection
long time ago.  Unfortunately:

- not all archs support ioread() & co.

- there is still issue with cache aliasing on some CPUs

Once above deficiences get fixed we can look into ioread() conversion again.

[ IOW right now it is the correct thing to stick to ide_mm_*() indirection
  since extra hardware coverage is more valuable than minor code cleanup. ]

Thanks,
Bart

Re: [PATCH 2/6] ide: move SFF I/O code to ide-io-sff.c

[Sergei Shtylyov]

Bartlomiej Zolnierkiewicz wrote:

>>>    Tried looking at how in*()/out*() are defined on x86?

>>Tried looking at how ide_mm_inb is defined on x86

>>>>It's already making function calls, without the benefit of inlining and

>>>    I'm afraid you're wrong here.

>>I'm afraid you are the one who is wrong. The IDE layer is duplicating a
>>generic level of indirection with its own code - purely because IDE
>>pre-dates that core functionality. The whole IDE layer indirection can go
>>away because Linux has caught up with the needs of the IDE layer.

> I wish it would be so simple as I would have removed the said indirection
> long time ago.  Unfortunately:

> - not all archs support ioread() & co.

> - there is still issue with cache aliasing on some CPUs

    Yep, look at MIPS for an example.

> Thanks,
> Bart

MBR, Sergei

Re: [PATCH 2/6] ide: move SFF I/O code to ide-io-sff.c

[Alan Cox]

> > I'm afraid you are the one who is wrong. The IDE layer is duplicating a
> > generic level of indirection with its own code - purely because IDE
> > pre-dates that core functionality. The whole IDE layer indirection can go
> > away because Linux has caught up with the needs of the IDE layer.
> 
>     What IDE indirection you're talking about anyway?

As I said earlier ide_mm_inb etc via the function pointers tf_inb/tf_outb
etc.

Given how small those functions are it might even be worth rolling them
into two different versions of the functions like ide_tf_read as surely
it costs more to call them (in size) than to inline the two for those
functions?

Re: [PATCH 2/6] ide: move SFF I/O code to ide-io-sff.c

[Sergei Shtylyov]

Hello.

Alan Cox wrote:

>>> I'm afraid you are the one who is wrong. The IDE layer is duplicating a
>>> generic level of indirection with its own code - purely because IDE
>>> pre-dates that core functionality. The whole IDE layer indirection can go
>>> away because Linux has caught up with the needs of the IDE layer.
>>>       
>>     What IDE indirection you're talking about anyway?
>>     
>
> As I said earlier ide_mm_inb etc via the function pointers tf_inb/tf_outb
> etc.
>   

   Ah... at least they don't have additional address checks that 
ioread*()/iowrite*() have...

> Given how small those functions are it might even be worth rolling them
> into two different versions of the functions like ide_tf_read as surely
> it costs more to call them (in size) than to inline the two for those
> functions?
>   

   Indeed.

WBR, Sergei

Re: [PATCH 2/6] ide: move SFF I/O code to ide-io-sff.c

[Sergei Shtylyov]

Hello, I wrote:

>>>> I'm afraid you are the one who is wrong. The IDE layer is 
>>>> duplicating a
>>>> generic level of indirection with its own code - purely because IDE
>>>> pre-dates that core functionality. The whole IDE layer indirection 
>>>> can go
>>>> away because Linux has caught up with the needs of the IDE layer.
>>>>       
>>>     What IDE indirection you're talking about anyway?
>>>     
>>
>> As I said earlier ide_mm_inb etc via the function pointers 
>> tf_inb/tf_outb
>> etc.
>>   
>
>   Ah... at least they don't have additional address checks that 
> ioread*()/iowrite*() have...

   Somehow I was looling at __ide_mm_{ins|outs}*() calls in ide-iops.c 
instead... it doesn't help to fix the USB code and argue about IDE at 
the same time. :-]

>> into two different versions of the functions like ide_tf_read as surely
>> it costs more to call them (in size) than to inline the two for those
>> functions?
>>   
> Given how small those functions are it might even be worth rolling them
>
>   Indeed.

  The calling fucntions aren't that small, so it's again arguable...

MBR, Sergei