sh: Consolidated SH7751/SH7780 PCI support.

This cleans up quite a lot of the PCI mess that we
currently have, and attempts to consolidate the
duplication in the SH7780 and SH7751 PCI controllers.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

20 files changed, 638 insertions, 932 deletions

diff --git a/arch/sh/drivers/pci/Makefile b/arch/sh/drivers/pci/Makefile
index 3d8078f1c05f..9e00cb8a39e9 100644
--- a/arch/sh/drivers/pci/Makefile
+++ b/arch/sh/drivers/pci/Makefile
@@ -6,8 +6,8 @@ obj-y					+= pci.o
 obj-$(CONFIG_PCI_AUTO)			+= pci-auto.o
 
 obj-$(CONFIG_CPU_SUBTYPE_ST40STB1)	+= pci-st40.o
-obj-$(CONFIG_CPU_SUBTYPE_SH7751)	+= pci-sh7751.o 
-obj-$(CONFIG_CPU_SUBTYPE_SH7780)	+= pci-sh7780.o
+obj-$(CONFIG_CPU_SUBTYPE_SH7751)	+= pci-sh7751.o ops-sh4.o
+obj-$(CONFIG_CPU_SUBTYPE_SH7780)	+= pci-sh7780.o ops-sh4.o
 
 obj-$(CONFIG_SH_DREAMCAST)		+= ops-dreamcast.o fixups-dreamcast.o \
 					   dma-dreamcast.o
@@ -17,3 +17,4 @@ obj-$(CONFIG_SH_RTS7751R2D)		+= ops-rts7751r2d.o fixups-rts7751r2d.o
 obj-$(CONFIG_SH_SH03)			+= ops-sh03.o fixups-sh03.o
 obj-$(CONFIG_SH_R7780RP)		+= ops-r7780rp.o fixups-r7780rp.o
 obj-$(CONFIG_SH_TITAN)			+= ops-titan.o
+obj-$(CONFIG_SH_LANDISK)		+= ops-landisk.o
diff --git a/arch/sh/drivers/pci/fixups-dreamcast.c b/arch/sh/drivers/pci/fixups-dreamcast.c
index 63b1c6f4b8d2..c0af5f7ef414 100644
--- a/arch/sh/drivers/pci/fixups-dreamcast.c
+++ b/arch/sh/drivers/pci/fixups-dreamcast.c
@@ -4,7 +4,7 @@
  * PCI fixups for the Sega Dreamcast
  *
  * Copyright (C) 2001, 2002  M. R. Brown
- * Copyright (C) 2002, 2003  Paul Mundt
+ * Copyright (C) 2002, 2003, 2006  Paul Mundt
  *
  * This file originally bore the message (with enclosed-$):
  *	Id: pci.c,v 1.3 2003/05/04 19:29:46 lethal Exp
@@ -45,36 +45,16 @@ static void __init gapspci_fixup_resources(struct pci_dev *dev)
 		printk("PCI: Failed resource fixup\n");
 	}
 }
-
 DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, gapspci_fixup_resources);
 
-void __init pcibios_fixup_bus(struct pci_bus *bus)
+int __init pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin)
 {
-	/* 
-	 * We don't have any sub bus to fix up, and this is a rather
-	 * stupid place to put general device fixups. Don't do it.
-	 * Use the pcibios_fixups table or suffer the consequences.
+	/*
+	 * The interrupt routing semantics here are quite trivial.
+	 *
+	 * We basically only support one interrupt, so we only bother
+	 * updating a device's interrupt line with this single shared
+	 * interrupt. Keeps routing quite simple, doesn't it?
 	 */
+	return GAPSPCI_IRQ;
 }
-
-void __init pcibios_fixup_irqs(void)
-{
-	struct pci_dev *dev = 0;
-
-	for_each_pci_dev(dev) {
-		/*
-		 * The interrupt routing semantics here are quite trivial.
-		 *
-		 * We basically only support one interrupt, so we only bother
-		 * updating a device's interrupt line with this single shared
-		 * interrupt. Keeps routing quite simple, doesn't it?
-		 */
-		printk(KERN_NOTICE "PCI: Fixing up IRQ routing for device %s\n",
-		       pci_name(dev));
-
-		dev->irq = GAPSPCI_IRQ;
-
-		pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
-	}
-}
-
diff --git a/arch/sh/drivers/pci/fixups-r7780rp.c b/arch/sh/drivers/pci/fixups-r7780rp.c
index b656b562ec99..3e321df65d22 100644
--- a/arch/sh/drivers/pci/fixups-r7780rp.c
+++ b/arch/sh/drivers/pci/fixups-r7780rp.c
@@ -4,36 +4,42 @@
  * Highlander R7780RP-1 PCI fixups
  *
  * Copyright (C) 2003  Lineo uSolutions, Inc.
- * Copyright (C) 2004  Paul Mundt
+ * Copyright (C) 2004 - 2006  Paul Mundt
  *
  * This file is subject to the terms and conditions of the GNU General Public
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  */
-#include "pci-sh7780.h"
+#include <linux/pci.h>
+#include "pci-sh4.h"
 #include <asm/io.h>
 
 int pci_fixup_pcic(void)
 {
-	outl(0x000043ff, PCI_REG(SH7780_PCIIMR));
-	outl(0x0000380f, PCI_REG(SH7780_PCIAINTM));
+	pci_write_reg(0x000043ff, SH4_PCIINTM);
+	pci_write_reg(0x0000380f, SH4_PCIAINTM);
 
-	outl(0xfbb00047, PCI_REG(SH7780_PCICMD));
-	outl(0x00000000, PCI_REG(SH7780_PCIIBAR));
+	pci_write_reg(0xfbb00047, SH7780_PCICMD);
+	pci_write_reg(0x00000000, SH7780_PCIIBAR);
 
-	outl(0x00011912, PCI_REG(SH7780_PCISVID));
-	outl(0x08000000, PCI_REG(SH7780_PCICSCR0));
-	outl(0x0000001b, PCI_REG(SH7780_PCICSAR0));
-	outl(0xfd000000, PCI_REG(SH7780_PCICSCR1));
-	outl(0x0000000f, PCI_REG(SH7780_PCICSAR1));
+	pci_write_reg(0x00011912, SH7780_PCISVID);
+	pci_write_reg(0x08000000, SH7780_PCICSCR0);
+	pci_write_reg(0x0000001b, SH7780_PCICSAR0);
+	pci_write_reg(0xfd000000, SH7780_PCICSCR1);
+	pci_write_reg(0x0000000f, SH7780_PCICSAR1);
 
-	outl(0xfd000000, PCI_REG(SH7780_PCIMBR0));
-	outl(0x00fc0000, PCI_REG(SH7780_PCIMBMR0));
+	pci_write_reg(0xfd000000, SH7780_PCIMBR0);
+	pci_write_reg(0x00fc0000, SH7780_PCIMBMR0);
+
+#ifdef CONFIG_32BIT
+	pci_write_reg(0xc0000000, SH7780_PCIMBR2);
+	pci_write_reg(0x20000000 - SH7780_PCI_IO_SIZE, SH7780_PCIMBMR2);
+#endif
 
 	/* Set IOBR for windows containing area specified in pci.h */
-	outl((PCIBIOS_MIN_IO & ~(SH7780_PCI_IO_SIZE-1)), PCI_REG(SH7780_PCIIOBR));
-	outl(((SH7780_PCI_IO_SIZE-1) & (7<<18)), PCI_REG(SH7780_PCIIOBMR));
+	pci_write_reg((PCIBIOS_MIN_IO & ~(SH7780_PCI_IO_SIZE - 1)),
+		      SH7780_PCIIOBR);
+	pci_write_reg(((SH7780_PCI_IO_SIZE-1) & (7<<18)), SH7780_PCIIOBMR);
 
 	return 0;
 }
-
diff --git a/arch/sh/drivers/pci/fixups-rts7751r2d.c b/arch/sh/drivers/pci/fixups-rts7751r2d.c
index 0c590fc7a081..e72ceb560d5b 100644
--- a/arch/sh/drivers/pci/fixups-rts7751r2d.c
+++ b/arch/sh/drivers/pci/fixups-rts7751r2d.c
@@ -10,8 +10,7 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  */
-#include "pci-sh7751.h"
-#include <asm/io.h>
+#include "pci-sh4.h"
 
 #define PCIMCR_MRSET_OFF	0xBFFFFFFF
 #define PCIMCR_RFSH_OFF		0xFFFFFFFB
@@ -22,22 +21,23 @@ int pci_fixup_pcic(void)
 
 	bcr1 = inl(SH7751_BCR1);
 	bcr1 |= 0x40080000;	/* Enable Bit 19 BREQEN, set PCIC to slave */
-	outl(bcr1, PCI_REG(SH7751_PCIBCR1));
+	pci_write_reg(bcr1, SH4_PCIBCR1);
 
 	/* Enable all interrupts, so we known what to fix */
-	outl(0x0000c3ff, PCI_REG(SH7751_PCIINTM));
-	outl(0x0000380f, PCI_REG(SH7751_PCIAINTM));
+	pci_write_reg(0x0000c3ff, SH4_PCIINTM);
+	pci_write_reg(0x0000380f, SH4_PCIAINTM);
 
-	outl(0xfb900047, PCI_REG(SH7751_PCICONF1));
-	outl(0xab000001, PCI_REG(SH7751_PCICONF4));
+	pci_write_reg(0xfb900047, SH7751_PCICONF1);
+	pci_write_reg(0xab000001, SH7751_PCICONF4);
 
 	mcr = inl(SH7751_MCR);
 	mcr = (mcr & PCIMCR_MRSET_OFF) & PCIMCR_RFSH_OFF;
-	outl(mcr, PCI_REG(SH7751_PCIMCR));
+	pci_write_reg(mcr, SH4_PCIMCR);
+
+	pci_write_reg(0x0c000000, SH7751_PCICONF5);
+	pci_write_reg(0xd0000000, SH7751_PCICONF6);
+	pci_write_reg(0x0c000000, SH4_PCILAR0);
+	pci_write_reg(0x00000000, SH4_PCILAR1);
 
-	outl(0x0c000000, PCI_REG(SH7751_PCICONF5));
-	outl(0xd0000000, PCI_REG(SH7751_PCICONF6));
-	outl(0x0c000000, PCI_REG(SH7751_PCILAR0));
-	outl(0x00000000, PCI_REG(SH7751_PCILAR1));
 	return 0;
 }
diff --git a/arch/sh/drivers/pci/fixups-sh03.c b/arch/sh/drivers/pci/fixups-sh03.c
index 57ac26c2171f..2e8a18b7ee53 100644
--- a/arch/sh/drivers/pci/fixups-sh03.c
+++ b/arch/sh/drivers/pci/fixups-sh03.c
@@ -3,11 +3,7 @@
 #include <linux/types.h>
 #include <linux/pci.h>
 
-/*
- * 	IRQ functions
- */
-
-int __init pcibios_map_platform_irq(u8 slot, u8 pin, struct pci_dev *dev)
+int __init pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int irq;
 
@@ -17,8 +13,9 @@ int __init pcibios_map_platform_irq(u8 slot, u8 pin, struct pci_dev *dev)
 		case 8: return 5;	/* eth1       */
 		case 6: return 2;	/* PCI bridge */
 		default:
-                	printk("PCI: Bad IRQ mapping request for slot %d\n", slot);
-                	return 2;
+			printk(KERN_ERR "PCI: Bad IRQ mapping request "
+					"for slot %d\n", slot);
+			return 2;
 		}
 	} else {
 		switch (pin) {
@@ -32,30 +29,3 @@ int __init pcibios_map_platform_irq(u8 slot, u8 pin, struct pci_dev *dev)
 	}
 	return irq;
 }
-
-static u8 __init sh03_no_swizzle(struct pci_dev *dev, u8 *pin)
-{
-	/* no swizzling */
-	return PCI_SLOT(dev->devfn);
-}
-
-static int sh03_pci_lookup_irq(struct pci_dev *dev, u8 slot, u8 pin)
-{
-	int irq = -1;
-
-	/* now lookup the actual IRQ on a platform specific basis (pci-'platform'.c) */
-	irq = pcibios_map_platform_irq(slot, pin, dev);
-	if( irq < 0 ) {
-		pr_debug("PCI: Error mapping IRQ on device %s\n", pci_name(dev));
-		return irq;
-	}
-
-	pr_debug("Setting IRQ for slot %s to %d\n", pci_name(dev), irq);
-
-	return irq;
-}
-
-void __init pcibios_fixup_irqs(void)
-{
-	pci_fixup_irqs(sh03_no_swizzle, sh03_pci_lookup_irq);
-}
diff --git a/arch/sh/drivers/pci/ops-bigsur.c b/arch/sh/drivers/pci/ops-bigsur.c
index ae82c6ca05e5..5da501bd77b5 100644
--- a/arch/sh/drivers/pci/ops-bigsur.c
+++ b/arch/sh/drivers/pci/ops-bigsur.c
@@ -10,15 +10,12 @@
  *
  * PCI initialization for the Hitachi Big Sur Evaluation Board
  */
-
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/init.h>
-#include <linux/delay.h>
 #include <linux/pci.h>
-
 #include <asm/io.h>
-#include "pci-sh7751.h"
+#include "pci-sh4.h"
 #include <asm/bigsur/bigsur.h>
 
 #define BIGSUR_PCI_IO	0x4000
@@ -41,11 +38,11 @@ static struct resource sh7751_mem_resource = {
 extern struct pci_ops sh7751_pci_ops;
 
 struct pci_channel board_pci_channels[] = {
-	{ &sh7751_pci_ops, &sh7751_io_resource, &sh7751_mem_resource, 0, 0xff },
+	{ &sh4_pci_ops, &sh7751_io_resource, &sh7751_mem_resource, 0, 0xff },
 	{ 0, }
 };
 
-static struct sh7751_pci_address_map sh7751_pci_map = {
+static struct sh4_pci_address_map sh7751_pci_map = {
 	.window0	= {
 		.base	= SH7751_CS3_BASE_ADDR,
 		.size	= BIGSUR_LSR0_SIZE,
@@ -58,7 +55,7 @@ static struct sh7751_pci_address_map sh7751_pci_map = {
 };
 
 /*
- * Initialize the Big Sur PCI interface 
+ * Initialize the Big Sur PCI interface
  * Setup hardware to be Central Funtion
  * Copy the BSR regs to the PCI interface
  * Setup PCI windows into local RAM
@@ -68,15 +65,15 @@ int __init pcibios_init_platform(void)
 	return sh7751_pcic_init(&sh7751_pci_map);
 }
 
-int pcibios_map_platform_irq(u8 slot, u8 pin)
+int __init pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
 {
-	/* 
+	/*
 	 * The Big Sur can be used in a CPCI chassis, but the SH7751 PCI
 	 * interface is on the wrong end of the board so that it can also
 	 * support a V320 CPI interface chip...  Therefor the IRQ mapping is
 	 * somewhat use dependent... I'l assume a linear map for now, i.e.
 	 * INTA=slot0,pin0... INTD=slot3,pin0...
-	 */ 
+	 */
 	int irq = (slot + pin-1) % 4 + BIGSUR_SH7751_PCI_IRQ_BASE;
 
 	PCIDBG(2, "PCI: Mapping Big Sur IRQ for slot %d, pin %c to irq %d\n",
@@ -84,4 +81,3 @@ int pcibios_map_platform_irq(u8 slot, u8 pin)
 
 	return irq;
 }
-
diff --git a/arch/sh/drivers/pci/ops-landisk.c b/arch/sh/drivers/pci/ops-landisk.c
new file mode 100644
index 000000000000..ada301c21fe7
--- /dev/null
+++ b/arch/sh/drivers/pci/ops-landisk.c
@@ -0,0 +1,68 @@
+/*
+ * arch/sh/drivers/pci/ops-landisk.c
+ *
+ * PCI initialization for the I-O DATA Device, Inc. LANDISK board
+ *
+ * Copyright (C) 2006 kogiidena
+ *
+ * May be copied or modified under the terms of the GNU General Public
+ * License.  See linux/COPYING for more information.
+ */
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include "pci-sh4.h"
+
+static struct resource sh7751_io_resource = {
+	.name = "SH7751 IO",
+	.start = 0x4000,
+	.end = 0x4000 + SH7751_PCI_IO_SIZE - 1,
+	.flags = IORESOURCE_IO
+};
+
+static struct resource sh7751_mem_resource = {
+	.name = "SH7751 mem",
+	.start = SH7751_PCI_MEMORY_BASE,
+	.end = SH7751_PCI_MEMORY_BASE + SH7751_PCI_MEM_SIZE - 1,
+	.flags = IORESOURCE_MEM
+};
+
+struct pci_channel board_pci_channels[] = {
+	{&sh4_pci_ops, &sh7751_io_resource, &sh7751_mem_resource, 0, 0x3ff},
+	{NULL, NULL, NULL, 0, 0},
+};
+
+static struct sh4_pci_address_map sh7751_pci_map = {
+	.window0 = {
+		.base	= SH7751_CS3_BASE_ADDR,
+		.size	= (64 << 20),	/* 64MB */
+	},
+
+	.flags = SH4_PCIC_NO_RESET,
+};
+
+int __init pcibios_init_platform(void)
+{
+	return sh7751_pcic_init(&sh7751_pci_map);
+}
+
+int pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
+{
+	/*
+	 * slot0: pin1-4 = irq5,6,7,8
+	 * slot1: pin1-4 = irq6,7,8,5
+	 * slot2: pin1-4 = irq7,8,5,6
+	 * slot3: pin1-4 = irq8,5,6,7
+	 */
+	int irq = ((slot + pin - 1) & 0x3) + 5;
+
+	if ((slot | (pin - 1)) > 0x3) {
+		printk("PCI: Bad IRQ mapping request for slot %d pin %c\n",
+		       slot, pin - 1 + 'A');
+		return -1;
+	}
+	return irq;
+}
diff --git a/arch/sh/drivers/pci/ops-r7780rp.c b/arch/sh/drivers/pci/ops-r7780rp.c
index 3254c4e917a9..554d5ed2c586 100644
--- a/arch/sh/drivers/pci/ops-r7780rp.c
+++ b/arch/sh/drivers/pci/ops-r7780rp.c
@@ -15,13 +15,11 @@
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/pci.h>
-#include <linux/module.h>
-
-#include <asm/io.h>
-#include "pci-sh7780.h"
 #include <asm/r7780rp/r7780rp.h>
+#include <asm/io.h>
+#include "pci-sh4.h"
 
-int __init pcibios_map_platform_irq(u8 slot, u8 pin)
+int __init pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
 {
         switch (slot) {
 	case 0: return IRQ_PCISLOT1;		/* PCI Interrupt #1 */
@@ -29,7 +27,8 @@ int __init pcibios_map_platform_irq(u8 slot, u8 pin)
 	case 2: return IRQ_PCISLOT3;		/* PCI Interrupt #3 */
 	case 3: return IRQ_PCISLOT4;		/* PCI Interrupt E4 */
 	default:
-		printk("PCI: Bad IRQ mapping request for slot %d, func %d\n", slot, pin-1);
+		printk(KERN_ERR "PCI: Bad IRQ mapping "
+		       "request for slot %d, func %d\n", slot, pin-1);
 		return -1;
 	}
 }
@@ -51,12 +50,12 @@ static struct resource sh7780_mem_resource = {
 extern struct pci_ops sh7780_pci_ops;
 
 struct pci_channel board_pci_channels[] = {
-	{ &sh7780_pci_ops, &sh7780_io_resource, &sh7780_mem_resource, 0, 0xff },
+	{ &sh4_pci_ops, &sh7780_io_resource, &sh7780_mem_resource, 0, 0xff },
 	{ NULL, NULL, NULL, 0, 0 },
 };
 EXPORT_SYMBOL(board_pci_channels);
 
-static struct sh7780_pci_address_map sh7780_pci_map = {
+static struct sh4_pci_address_map sh7780_pci_map = {
 	.window0	= {
 		.base	= SH7780_CS2_BASE_ADDR,
 		.size	= 0x04000000,
@@ -67,11 +66,10 @@ static struct sh7780_pci_address_map sh7780_pci_map = {
 		.size	= 0x04000000,
 	},
 
-	.flags	= SH7780_PCIC_NO_RESET,
+	.flags	= SH4_PCIC_NO_RESET,
 };
 
 int __init pcibios_init_platform(void)
 {
 	return sh7780_pcic_init(&sh7780_pci_map);
 }
-
diff --git a/arch/sh/drivers/pci/ops-rts7751r2d.c b/arch/sh/drivers/pci/ops-rts7751r2d.c
index 83171d10141a..88f44e245424 100644
--- a/arch/sh/drivers/pci/ops-rts7751r2d.c
+++ b/arch/sh/drivers/pci/ops-rts7751r2d.c
@@ -17,12 +17,11 @@
 #include <linux/delay.h>
 #include <linux/pci.h>
 #include <linux/module.h>
-
-#include <asm/io.h>
-#include "pci-sh7751.h"
 #include <asm/rts7751r2d/rts7751r2d.h>
+#include <asm/io.h>
+#include "pci-sh4.h"
 
-int __init pcibios_map_platform_irq(u8 slot, u8 pin)
+int __init pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
 {
         switch (slot) {
 	case 0: return IRQ_PCISLOT1;	/* PCI Extend slot #1 */
@@ -52,12 +51,12 @@ static struct resource sh7751_mem_resource = {
 extern struct pci_ops sh7751_pci_ops;
 
 struct pci_channel board_pci_channels[] = {
-	{ &sh7751_pci_ops, &sh7751_io_resource, &sh7751_mem_resource, 0, 0xff },
+	{ &sh4_pci_ops, &sh7751_io_resource, &sh7751_mem_resource, 0, 0xff },
 	{ NULL, NULL, NULL, 0, 0 },
 };
 EXPORT_SYMBOL(board_pci_channels);
 
-static struct sh7751_pci_address_map sh7751_pci_map = {
+static struct sh4_pci_address_map sh7751_pci_map = {
 	.window0	= {
 		.base	= SH7751_CS3_BASE_ADDR,
 		.size	= 0x04000000,
@@ -68,7 +67,7 @@ static struct sh7751_pci_address_map sh7751_pci_map = {
 		.size	= 0x00000000,	/* Unused */
 	},
 
-	.flags	= SH7751_PCIC_NO_RESET,
+	.flags	= SH4_PCIC_NO_RESET,
 };
 
 int __init pcibios_init_platform(void)
diff --git a/arch/sh/drivers/pci/ops-sh4.c b/arch/sh/drivers/pci/ops-sh4.c
new file mode 100644
index 000000000000..2d4371009a5e
--- /dev/null
+++ b/arch/sh/drivers/pci/ops-sh4.c
@@ -0,0 +1,164 @@
+/*
+ * Generic SH-4 / SH-4A PCIC operations (SH7751, SH7780).
+ *
+ * Copyright (C) 2002 - 2006  Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License v2. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/pci.h>
+#include <asm/addrspace.h>
+#include <asm/io.h>
+#include "pci-sh4.h"
+
+/*
+ * Direct access to PCI hardware...
+ */
+#define CONFIG_CMD(bus, devfn, where) \
+	P1SEGADDR((bus->number << 16) | (devfn << 8) | (where & ~3))
+
+static DEFINE_SPINLOCK(sh4_pci_lock);
+
+/*
+ * Functions for accessing PCI configuration space with type 1 accesses
+ */
+static int sh4_pci_read(struct pci_bus *bus, unsigned int devfn,
+			   int where, int size, u32 *val)
+{
+	unsigned long flags;
+	u32 data;
+
+	/*
+	 * PCIPDR may only be accessed as 32 bit words,
+	 * so we must do byte alignment by hand
+	 */
+	spin_lock_irqsave(&sh4_pci_lock, flags);
+	pci_write_reg(CONFIG_CMD(bus, devfn, where), SH4_PCIPAR);
+	data = pci_read_reg(SH4_PCIPDR);
+	spin_unlock_irqrestore(&sh4_pci_lock, flags);
+
+	switch (size) {
+	case 1:
+		*val = (data >> ((where & 3) << 3)) & 0xff;
+		break;
+	case 2:
+		*val = (data >> ((where & 2) << 3)) & 0xffff;
+		break;
+	case 4:
+		*val = data;
+		break;
+	default:
+		return PCIBIOS_FUNC_NOT_SUPPORTED;
+	}
+
+	return PCIBIOS_SUCCESSFUL;
+}
+
+/*
+ * Since SH4 only does 32bit access we'll have to do a read,
+ * mask,write operation.
+ * We'll allow an odd byte offset, though it should be illegal.
+ */
+static int sh4_pci_write(struct pci_bus *bus, unsigned int devfn,
+			 int where, int size, u32 val)
+{
+	unsigned long flags;
+	int shift;
+	u32 data;
+
+	spin_lock_irqsave(&sh4_pci_lock, flags);
+	pci_write_reg(CONFIG_CMD(bus, devfn, where), SH4_PCIPAR);
+	data = pci_read_reg(SH4_PCIPDR);
+	spin_unlock_irqrestore(&sh4_pci_lock, flags);
+
+	switch (size) {
+	case 1:
+		shift = (where & 3) << 3;
+		data &= ~(0xff << shift);
+		data |= ((val & 0xff) << shift);
+		break;
+	case 2:
+		shift = (where & 2) << 3;
+		data &= ~(0xffff << shift);
+		data |= ((val & 0xffff) << shift);
+		break;
+	case 4:
+		data = val;
+		break;
+	default:
+		return PCIBIOS_FUNC_NOT_SUPPORTED;
+	}
+
+	pci_write_reg(data, SH4_PCIPDR);
+
+	return PCIBIOS_SUCCESSFUL;
+}
+
+struct pci_ops sh4_pci_ops = {
+	.read		= sh4_pci_read,
+	.write		= sh4_pci_write,
+};
+
+/*
+ * Not really related to pci_ops, but it's common and not worth shoving
+ * somewhere else for now..
+ */
+static unsigned int pci_probe = PCI_PROBE_CONF1;
+
+int __init sh4_pci_check_direct(void)
+{
+	/*
+	 * Check if configuration works.
+	 */
+	if (pci_probe & PCI_PROBE_CONF1) {
+		unsigned int tmp = pci_read_reg(SH4_PCIPAR);
+
+		pci_write_reg(P1SEG, SH4_PCIPAR);
+
+		if (pci_read_reg(SH4_PCIPAR) == P1SEG) {
+			pci_write_reg(tmp, SH4_PCIPAR);
+			printk(KERN_INFO "PCI: Using configuration type 1\n");
+			request_region(PCI_REG(SH4_PCIPAR), 8, "PCI conf1");
+
+			return 0;
+		}
+
+		pci_write_reg(tmp, SH4_PCIPAR);
+	}
+
+	pr_debug("PCI: pci_check_direct failed\n");
+	return -EINVAL;
+}
+
+/* Handle generic fixups */
+static void __init pci_fixup_ide_bases(struct pci_dev *d)
+{
+	int i;
+
+	/*
+	 * PCI IDE controllers use non-standard I/O port decoding, respect it.
+	 */
+	if ((d->class >> 8) != PCI_CLASS_STORAGE_IDE)
+		return;
+	pr_debug("PCI: IDE base address fixup for %s\n", pci_name(d));
+	for(i = 0; i < 4; i++) {
+		struct resource *r = &d->resource[i];
+
+		if ((r->start & ~0x80) == 0x374) {
+			r->start |= 2;
+			r->end = r->start;
+		}
+	}
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pci_fixup_ide_bases);
+
+char * __init pcibios_setup(char *str)
+{
+	if (!strcmp(str, "off")) {
+		pci_probe = 0;
+		return NULL;
+	}
+
+	return str;
+}
diff --git a/arch/sh/drivers/pci/ops-snapgear.c b/arch/sh/drivers/pci/ops-snapgear.c
index 3cbd14dd28fe..53dd893d4e54 100644
--- a/arch/sh/drivers/pci/ops-snapgear.c
+++ b/arch/sh/drivers/pci/ops-snapgear.c
@@ -2,7 +2,7 @@
  * arch/sh/drivers/pci/ops-snapgear.c
  *
  * Author:  David McCullough <davidm@snapgear.com>
- * 
+ *
  * Ported to new API by Paul Mundt <lethal@linux-sh.org>
  *
  * Highly leveraged from pci-bigsur.c, written by Dustin McIntire.
@@ -12,15 +12,11 @@
  *
  * PCI initialization for the SnapGear boards
  */
-
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/init.h>
-#include <linux/delay.h>
 #include <linux/pci.h>
-
-#include <asm/io.h>
-#include "pci-sh7751.h"
+#include "pci-sh4.h"
 
 #define SNAPGEAR_PCI_IO		0x4000
 #define SNAPGEAR_PCI_MEM	0xfd000000
@@ -43,14 +39,12 @@ static struct resource sh7751_mem_resource = {
 	.flags		= IORESOURCE_MEM,
 };
 
-extern struct pci_ops sh7751_pci_ops;
-
 struct pci_channel board_pci_channels[] = {
-	{ &sh7751_pci_ops, &sh7751_io_resource, &sh7751_mem_resource, 0, 0xff },
+	{ &sh4_pci_ops, &sh7751_io_resource, &sh7751_mem_resource, 0, 0xff },
 	{ 0, }
 };
 
-static struct sh7751_pci_address_map sh7751_pci_map = {
+static struct sh4_pci_address_map sh7751_pci_map = {
 	.window0	= {
 		.base	= SH7751_CS2_BASE_ADDR,
 		.size	= SNAPGEAR_LSR0_SIZE,
@@ -61,11 +55,11 @@ static struct sh7751_pci_address_map sh7751_pci_map = {
 		.size	= SNAPGEAR_LSR1_SIZE,
 	},
 
-	.flags	= SH7751_PCIC_NO_RESET,
+	.flags	= SH4_PCIC_NO_RESET,
 };
 
 /*
- * Initialize the SnapGear PCI interface 
+ * Initialize the SnapGear PCI interface
  * Setup hardware to be Central Funtion
  * Copy the BSR regs to the PCI interface
  * Setup PCI windows into local RAM
@@ -75,7 +69,7 @@ int __init pcibios_init_platform(void)
 	return sh7751_pcic_init(&sh7751_pci_map);
 }
 
-int __init pcibios_map_platform_irq(u8 slot, u8 pin)
+int __init pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
 {
 	int irq = -1;
 
@@ -98,4 +92,3 @@ void __init pcibios_fixup(void)
 {
 	/* Nothing to fixup .. */
 }
-
diff --git a/arch/sh/drivers/pci/ops-titan.c b/arch/sh/drivers/pci/ops-titan.c
index f76e4e963ac1..9c8b2027c35d 100644
--- a/arch/sh/drivers/pci/ops-titan.c
+++ b/arch/sh/drivers/pci/ops-titan.c
@@ -16,12 +16,11 @@
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/init.h>
-#include <linux/delay.h>
 #include <asm/io.h>
 #include <asm/titan.h>
-#include "pci-sh7751.h"
+#include "pci-sh4.h"
 
-int __init pcibios_map_platform_irq(u8 slot, u8 pin)
+int __init pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
 {
 	int irq = -1;
 
@@ -32,7 +31,8 @@ int __init pcibios_map_platform_irq(u8 slot, u8 pin)
 	case 3: irq = TITAN_IRQ_MPCIB; break;	/* mPCI B */
 	case 4: irq = TITAN_IRQ_USB;   break;	/* USB */
 	default:
-		printk(KERN_INFO "PCI: Bad IRQ mapping request for slot %d\n", slot);
+		printk(KERN_INFO "PCI: Bad IRQ mapping "
+				 "request for slot %d\n", slot);
 		return -1;
 	}
 
@@ -56,15 +56,13 @@ static struct resource sh7751_mem_resource = {
 	.flags	= IORESOURCE_MEM
 };
 
-extern struct pci_ops sh7751_pci_ops;
-
 struct pci_channel board_pci_channels[] = {
-	{ &sh7751_pci_ops, &sh7751_io_resource, &sh7751_mem_resource, 0, 0xff },
+	{ &sh4_pci_ops, &sh7751_io_resource, &sh7751_mem_resource, 0, 0xff },
 	{ NULL, NULL, NULL, 0, 0 },
 };
 EXPORT_SYMBOL(board_pci_channels);
 
-static struct sh7751_pci_address_map sh7751_pci_map = {
+static struct sh4_pci_address_map sh7751_pci_map = {
 	.window0	= {
 		.base	= SH7751_CS2_BASE_ADDR,
 		.size	= SH7751_MEM_REGION_SIZE*2,	/* cs2 and cs3 */
@@ -75,7 +73,7 @@ static struct sh7751_pci_address_map sh7751_pci_map = {
 		.size	= SH7751_MEM_REGION_SIZE*2,
 	},
 
-	.flags	= SH7751_PCIC_NO_RESET,
+	.flags	= SH4_PCIC_NO_RESET,
 };
 
 int __init pcibios_init_platform(void)
diff --git a/arch/sh/drivers/pci/pci-auto.c b/arch/sh/drivers/pci/pci-auto.c
index d55e46618549..ecf16344f94a 100644
--- a/arch/sh/drivers/pci/pci-auto.c
+++ b/arch/sh/drivers/pci/pci-auto.c
@@ -358,7 +358,6 @@ pciauto_postscan_setup_cardbus_bridge(struct pci_channel *hose,
 {
 	u32 temp;
 
-#if !defined(CONFIG_SH_HS7751RVOIP) && !defined(CONFIG_SH_RTS7751R2D) && !defined(CONFIG_SH_R7780RP)
 	/*
 	 * [jsun] we always bump up baselines a little, so that if there
 	 * nothing behind P2P bridge, we don't wind up overlapping IO/MEM
@@ -366,7 +365,6 @@ pciauto_postscan_setup_cardbus_bridge(struct pci_channel *hose,
 	 */
 	pciauto_lower_memspc += 1;
 	pciauto_lower_iospc += 1;
-#endif
 
 	/*
 	 * Configure subordinate bus number.  The PCI subsystem
@@ -392,11 +390,6 @@ pciauto_postscan_setup_cardbus_bridge(struct pci_channel *hose,
 	 * configured by this routine to happily live behind a
 	 * P2P bridge in a system.
 	 */
-#if defined(CONFIG_SH_HS7751RVOIP) || defined(CONFIG_SH_RTS7751R2D) || defined(CONFIG_SH_R7780RP)
-	pciauto_lower_memspc += 0x00400000;
-	pciauto_lower_iospc += 0x00004000;
-#endif
-
 	/* Align memory and I/O to 4KB and 4 byte boundaries. */
 	pciauto_lower_memspc = (pciauto_lower_memspc + (0x1000 - 1))
 		& ~(0x1000 - 1);
@@ -467,9 +460,6 @@ pciauto_bus_scan(struct pci_channel *hose, int top_bus, int current_bus)
 		if ((pci_class >> 16) == PCI_CLASS_BRIDGE_PCI) {
 			DBG("        Bridge: primary=%.2x, secondary=%.2x\n",
 				current_bus, sub_bus + 1);
-#if defined(CONFIG_SH_HS7751RVOIP) || defined(CONFIG_SH_RTS7751R2D) || defined(CONFIG_SH_R7780RP)
-			pciauto_setup_bars(hose, top_bus, current_bus, pci_devfn, PCI_BASE_ADDRESS_1);
-#endif
 			pciauto_prescan_setup_bridge(hose, top_bus, current_bus,
 						     pci_devfn, sub_bus);
 			DBG("Scanning sub bus %.2x, I/O 0x%.8x, Mem 0x%.8x\n",
diff --git a/arch/sh/drivers/pci/pci-sh4.h b/arch/sh/drivers/pci/pci-sh4.h
new file mode 100644
index 000000000000..5a61d6041f2c
--- /dev/null
+++ b/arch/sh/drivers/pci/pci-sh4.h
@@ -0,0 +1,180 @@
+#ifndef __PCI_SH4_H
+#define __PCI_SH4_H
+
+#ifdef CONFIG_CPU_SUBTYPE_SH7780
+#include "pci-sh7780.h"
+#else
+#include "pci-sh7751.h"
+#endif
+
+#include <asm/io.h>
+
+/* startup values */
+#define PCI_PROBE_BIOS		1
+#define PCI_PROBE_CONF1		2
+#define PCI_PROBE_CONF2		4
+#define PCI_NO_SORT		0x100
+#define PCI_BIOS_SORT		0x200
+#define PCI_NO_CHECKS		0x400
+#define PCI_ASSIGN_ROMS		0x1000
+#define PCI_BIOS_IRQ_SCAN	0x2000
+
+#define SH4_PCICR		0x100		/* PCI Control Register */
+  #define SH4_PCICR_PREFIX	  0xA5000000	/* CR prefix for write */
+  #define SH4_PCICR_FTO		  0x00000400	/* TRDY/IRDY Enable */
+  #define SH4_PCICR_TRSB	  0x00000200	/* Target Read Single */
+  #define SH4_PCICR_BSWP	  0x00000100	/* Target Byte Swap */
+  #define SH4_PCICR_PLUP	  0x00000080	/* Enable PCI Pullup */
+  #define SH4_PCICR_ARBM	  0x00000040	/* PCI Arbitration Mode */
+  #define SH4_PCICR_MD		  0x00000030	/* MD9 and MD10 status */
+  #define SH4_PCICR_SERR	  0x00000008	/* SERR output assert */
+  #define SH4_PCICR_INTA	  0x00000004	/* INTA output assert */
+  #define SH4_PCICR_PRST	  0x00000002	/* PCI Reset Assert */
+  #define SH4_PCICR_CFIN	  0x00000001	/* Central Fun. Init Done */
+#define SH4_PCILSR0		0x104		/* PCI Local Space Register0 */
+#define SH4_PCILSR1		0x108		/* PCI Local Space Register1 */
+#define SH4_PCILAR0		0x10C		/* PCI Local Addr Register1 */
+#define SH4_PCILAR1		0x110		/* PCI Local Addr Register1 */
+#define SH4_PCIINT		0x114		/* PCI Interrupt Register */
+  #define SH4_PCIINT_MLCK	  0x00008000	/* Master Lock Error */
+  #define SH4_PCIINT_TABT	  0x00004000	/* Target Abort Error */
+  #define SH4_PCIINT_TRET	  0x00000200	/* Target Retry Error */
+  #define SH4_PCIINT_MFDE	  0x00000100	/* Master Func. Disable Error */
+  #define SH4_PCIINT_PRTY	  0x00000080	/* Address Parity Error */
+  #define SH4_PCIINT_SERR	  0x00000040	/* SERR Detection Error */
+  #define SH4_PCIINT_TWDP	  0x00000020	/* Tgt. Write Parity Error */
+  #define SH4_PCIINT_TRDP	  0x00000010	/* Tgt. Read Parity Err Det. */
+  #define SH4_PCIINT_MTABT	  0x00000008	/* Master-Tgt. Abort Error */
+  #define SH4_PCIINT_MMABT	  0x00000004	/* Master-Master Abort Error */
+  #define SH4_PCIINT_MWPD	  0x00000002	/* Master Write PERR Detect */
+  #define SH4_PCIINT_MRPD	  0x00000001	/* Master Read PERR Detect */
+#define SH4_PCIINTM		0x118		/* PCI Interrupt Mask */
+#define SH4_PCIALR		0x11C		/* Error Address Register */
+#define SH4_PCICLR		0x120		/* Error Command/Data */
+  #define SH4_PCICLR_MPIO	  0x80000000
+  #define SH4_PCICLR_MDMA0	  0x40000000	/* DMA0 Transfer Error */
+  #define SH4_PCICLR_MDMA1	  0x20000000	/* DMA1 Transfer Error */
+  #define SH4_PCICLR_MDMA2	  0x10000000	/* DMA2 Transfer Error */
+  #define SH4_PCICLR_MDMA3	  0x08000000	/* DMA3 Transfer Error */
+  #define SH4_PCICLR_TGT	  0x04000000	/* Target Transfer Error */
+  #define SH4_PCICLR_CMDL	  0x0000000F	/* PCI Command at Error */
+#define SH4_PCIAINT		0x130		/* Arbiter Interrupt Register */
+  #define SH4_PCIAINT_MBKN	  0x00002000	/* Master Broken Interrupt */
+  #define SH4_PCIAINT_TBTO	  0x00001000	/* Target Bus Time Out */
+  #define SH4_PCIAINT_MBTO	  0x00001000	/* Master Bus Time Out */
+  #define SH4_PCIAINT_TABT	  0x00000008	/* Target Abort */
+  #define SH4_PCIAINT_MABT	  0x00000004	/* Master Abort */
+  #define SH4_PCIAINT_RDPE	  0x00000002	/* Read Data Parity Error */
+  #define SH4_PCIAINT_WDPE	  0x00000001	/* Write Data Parity Error */
+#define SH4_PCIAINTM            0x134		/* Arbiter Int. Mask Register */
+#define SH4_PCIBMLR		0x138		/* Error Bus Master Register */
+  #define SH4_PCIBMLR_REQ4	  0x00000010	/* REQ4 bus master at error */
+  #define SH4_PCIBMLR_REQ3	  0x00000008	/* REQ3 bus master at error */
+  #define SH4_PCIBMLR_REQ2	  0x00000004	/* REQ2 bus master at error */
+  #define SH4_PCIBMLR_REQ1	  0x00000002	/* REQ1 bus master at error */
+  #define SH4_PCIBMLR_REQ0	  0x00000001	/* REQ0 bus master at error */
+#define SH4_PCIDMABT		0x140		/* DMA Transfer Arb. Register */
+  #define SH4_PCIDMABT_RRBN	  0x00000001	/* DMA Arbitor Round-Robin */
+#define SH4_PCIDPA0		0x180		/* DMA0 Transfer Addr. */
+#define SH4_PCIDLA0		0x184		/* DMA0 Local Addr. */
+#define SH4_PCIDTC0		0x188		/* DMA0 Transfer Cnt. */
+#define SH4_PCIDCR0		0x18C		/* DMA0 Control Register */
+  #define SH4_PCIDCR_ALGN	  0x00000600	/* DMA Alignment Mode */
+  #define SH4_PCIDCR_MAST	  0x00000100	/* DMA Termination Type */
+  #define SH4_PCIDCR_INTM	  0x00000080	/* DMA Interrupt Done Mask*/
+  #define SH4_PCIDCR_INTS	  0x00000040	/* DMA Interrupt Done Status */
+  #define SH4_PCIDCR_LHLD	  0x00000020	/* Local Address Control */
+  #define SH4_PCIDCR_PHLD	  0x00000010	/* PCI Address Control*/
+  #define SH4_PCIDCR_IOSEL	  0x00000008	/* PCI Address Space Type */
+  #define SH4_PCIDCR_DIR	  0x00000004	/* DMA Transfer Direction */
+  #define SH4_PCIDCR_STOP	  0x00000002	/* Force DMA Stop */
+  #define SH4_PCIDCR_STRT	  0x00000001	/* DMA Start */
+#define SH4_PCIDPA1		0x190		/* DMA1 Transfer Addr. */
+#define SH4_PCIDLA1		0x194		/* DMA1 Local Addr. */
+#define SH4_PCIDTC1		0x198		/* DMA1 Transfer Cnt. */
+#define SH4_PCIDCR1		0x19C		/* DMA1 Control Register */
+#define SH4_PCIDPA2		0x1A0		/* DMA2 Transfer Addr. */
+#define SH4_PCIDLA2		0x1A4		/* DMA2 Local Addr. */
+#define SH4_PCIDTC2		0x1A8		/* DMA2 Transfer Cnt. */
+#define SH4_PCIDCR2		0x1AC		/* DMA2 Control Register */
+#define SH4_PCIDPA3		0x1B0		/* DMA3 Transfer Addr. */
+#define SH4_PCIDLA3		0x1B4		/* DMA3 Local Addr. */
+#define SH4_PCIDTC3		0x1B8		/* DMA3 Transfer Cnt. */
+#define SH4_PCIDCR3		0x1BC		/* DMA3 Control Register */
+#define SH4_PCIPAR		0x1C0		/* PIO Address Register */
+  #define SH4_PCIPAR_CFGEN	  0x80000000	/* Configuration Enable */
+  #define SH4_PCIPAR_BUSNO	  0x00FF0000	/* Config. Bus Number */
+  #define SH4_PCIPAR_DEVNO	  0x0000FF00	/* Config. Device Number */
+  #define SH4_PCIPAR_REGAD	  0x000000FC	/* Register Address Number */
+#define SH4_PCIMBR		0x1C4		/* Memory Base Address */
+  #define SH4_PCIMBR_MASK	  0xFF000000	/* Memory Space Mask */
+  #define SH4_PCIMBR_LOCK	  0x00000001	/* Lock Memory Space */
+#define SH4_PCIIOBR		0x1C8		/* I/O Base Address Register */
+  #define SH4_PCIIOBR_MASK	  0xFFFC0000	/* IO Space Mask */
+  #define SH4_PCIIOBR_LOCK	  0x00000001	/* Lock IO Space */
+#define SH4_PCIPINT		0x1CC		/* Power Mgmnt Int. Register */
+  #define SH4_PCIPINT_D3	  0x00000002	/* D3 Pwr Mgmt. Interrupt */
+  #define SH4_PCIPINT_D0	  0x00000001	/* D0 Pwr Mgmt. Interrupt */
+#define SH4_PCIPINTM		0x1D0		/* Power Mgmnt Mask Register */
+#define SH4_PCICLKR		0x1D4		/* Clock Ctrl. Register */
+  #define SH4_PCICLKR_PCSTP	  0x00000002	/* PCI Clock Stop */
+  #define SH4_PCICLKR_BCSTP	  0x00000001	/* BCLK Clock Stop */
+/* For definitions of BCR, MCR see ... */
+#define SH4_PCIBCR1		0x1E0		/* Memory BCR1 Register */
+  #define SH4_PCIMBR0		SH4_PCIBCR1
+#define SH4_PCIBCR2		0x1E4		/* Memory BCR2 Register */
+  #define SH4_PCIMBMR0		SH4_PCIBCR2
+#define SH4_PCIWCR1		0x1E8		/* Wait Control 1 Register */
+#define SH4_PCIWCR2		0x1EC		/* Wait Control 2 Register */
+#define SH4_PCIWCR3		0x1F0		/* Wait Control 3 Register */
+  #define SH4_PCIMBR2		SH4_PCIWCR3
+#define SH4_PCIMCR		0x1F4		/* Memory Control Register */
+#define SH4_PCIBCR3		0x1f8		/* Memory BCR3 Register */
+#define SH4_PCIPCTR             0x200		/* Port Control Register */
+  #define SH4_PCIPCTR_P2EN	  0x000400000	/* Port 2 Enable */
+  #define SH4_PCIPCTR_P1EN	  0x000200000	/* Port 1 Enable */
+  #define SH4_PCIPCTR_P0EN	  0x000100000	/* Port 0 Enable */
+  #define SH4_PCIPCTR_P2UP	  0x000000020	/* Port2 Pull Up Enable */
+  #define SH4_PCIPCTR_P2IO	  0x000000010	/* Port2 Output Enable */
+  #define SH4_PCIPCTR_P1UP	  0x000000008	/* Port1 Pull Up Enable */
+  #define SH4_PCIPCTR_P1IO	  0x000000004	/* Port1 Output Enable */
+  #define SH4_PCIPCTR_P0UP	  0x000000002	/* Port0 Pull Up Enable */
+  #define SH4_PCIPCTR_P0IO	  0x000000001	/* Port0 Output Enable */
+#define SH4_PCIPDTR		0x204		/* Port Data Register */
+  #define SH4_PCIPDTR_PB5	  0x000000020	/* Port 5 Enable */
+  #define SH4_PCIPDTR_PB4	  0x000000010	/* Port 4 Enable */
+  #define SH4_PCIPDTR_PB3	  0x000000008	/* Port 3 Enable */
+  #define SH4_PCIPDTR_PB2	  0x000000004	/* Port 2 Enable */
+  #define SH4_PCIPDTR_PB1	  0x000000002	/* Port 1 Enable */
+  #define SH4_PCIPDTR_PB0	  0x000000001	/* Port 0 Enable */
+#define SH4_PCIPDR		0x220		/* Port IO Data Register */
+
+/* Flags */
+#define SH4_PCIC_NO_RESET	0x0001
+
+/* arch/sh/kernel/drivers/pci/ops-sh4.c */
+extern struct pci_ops sh4_pci_ops;
+int sh4_pci_check_direct(void);
+int pci_fixup_pcic(void);
+
+struct sh4_pci_address_space {
+	unsigned long base;
+	unsigned long size;
+};
+
+struct sh4_pci_address_map {
+	struct sh4_pci_address_space window0;
+	struct sh4_pci_address_space window1;
+	unsigned long flags;
+};
+
+static inline void pci_write_reg(unsigned long val, unsigned long reg)
+{
+	outl(val, PCI_REG(reg));
+}
+
+static inline unsigned long pci_read_reg(unsigned long reg)
+{
+	return inl(PCI_REG(reg));
+}
+#endif /* __PCI_SH4_H */
diff --git a/arch/sh/drivers/pci/pci-sh7751.c b/arch/sh/drivers/pci/pci-sh7751.c
index 65093ec1b55e..dbe837884983 100644
--- a/arch/sh/drivers/pci/pci-sh7751.c
+++ b/arch/sh/drivers/pci/pci-sh7751.c
@@ -15,180 +15,14 @@
 
 #undef DEBUG
 
-#include <linux/types.h>
-#include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/pci.h>
-#include <linux/sched.h>
-#include <linux/ioport.h>
+#include <linux/types.h>
 #include <linux/errno.h>
-#include <linux/irq.h>
 #include <linux/delay.h>
-
-#include <asm/machvec.h>
+#include "pci-sh4.h"
+#include <asm/addrspace.h>
 #include <asm/io.h>
-#include "pci-sh7751.h"
-
-static unsigned int pci_probe = PCI_PROBE_CONF1;
-extern int pci_fixup_pcic(void);
-
-void pcibios_fixup_irqs(void) __attribute__ ((weak));
-
-/*
- * Direct access to PCI hardware...
- */
-
-#define CONFIG_CMD(bus, devfn, where) (0x80000000 | (bus->number << 16) | (devfn << 8) | (where & ~3))
-
-/*
- * Functions for accessing PCI configuration space with type 1 accesses
- */
-static int sh7751_pci_read(struct pci_bus *bus, unsigned int devfn,
-			   int where, int size, u32 *val)
-{
-	unsigned long flags;
-	u32 data;
-
-	/* 
-	 * PCIPDR may only be accessed as 32 bit words, 
-	 * so we must do byte alignment by hand 
-	 */
-	local_irq_save(flags);
-	outl(CONFIG_CMD(bus,devfn,where), PCI_REG(SH7751_PCIPAR));
-	data = inl(PCI_REG(SH7751_PCIPDR));
-	local_irq_restore(flags);
-
-	switch (size) {
-	case 1:
-		*val = (data >> ((where & 3) << 3)) & 0xff;
-		break;
-	case 2:
-		*val = (data >> ((where & 2) << 3)) & 0xffff;
-		break;
-	case 4:
-		*val = data;
-		break;
-	default:
-		return PCIBIOS_FUNC_NOT_SUPPORTED;
-	}
-
-	return PCIBIOS_SUCCESSFUL;
-}
-
-/* 
- * Since SH7751 only does 32bit access we'll have to do a read,
- * mask,write operation.
- * We'll allow an odd byte offset, though it should be illegal.
- */ 
-static int sh7751_pci_write(struct pci_bus *bus, unsigned int devfn,
-			    int where, int size, u32 val)
-{
-	unsigned long flags;
-	int shift;
-	u32 data;
-
-	local_irq_save(flags);
-	outl(CONFIG_CMD(bus,devfn,where), PCI_REG(SH7751_PCIPAR));
-	data = inl(PCI_REG(SH7751_PCIPDR));
-	local_irq_restore(flags);
-
-	switch (size) {
-	case 1:
-		shift = (where & 3) << 3;
-		data &= ~(0xff << shift);
-		data |= ((val & 0xff) << shift);
-		break;
-	case 2:
-		shift = (where & 2) << 3;
-		data &= ~(0xffff << shift);
-		data |= ((val & 0xffff) << shift);
-		break;
-	case 4:
-		data = val;
-		break;
-	default:
-		return PCIBIOS_FUNC_NOT_SUPPORTED;
-	}
-
-	outl(data, PCI_REG(SH7751_PCIPDR));
-
-	return PCIBIOS_SUCCESSFUL;
-}
-
-#undef CONFIG_CMD
-
-struct pci_ops sh7751_pci_ops = {
-	.read 		= sh7751_pci_read,
-	.write		= sh7751_pci_write,
-};
-
-static int __init pci_check_direct(void)
-{
-	unsigned int tmp, id;
-
-	/* check for SH7751/SH7751R hardware */
-	id = inl(SH7751_PCIREG_BASE+SH7751_PCICONF0);
-	if (id != ((SH7751_DEVICE_ID << 16) | SH7751_VENDOR_ID) &&
-	    id != ((SH7751R_DEVICE_ID << 16) | SH7751_VENDOR_ID)) {
-		pr_debug("PCI: This is not an SH7751(R) (%x)\n", id);
-		return -ENODEV;
-	}
-
-	/*
-	 * Check if configuration works.
-	 */
-	if (pci_probe & PCI_PROBE_CONF1) {
-		tmp = inl (PCI_REG(SH7751_PCIPAR));
-		outl (0x80000000, PCI_REG(SH7751_PCIPAR));
-		if (inl (PCI_REG(SH7751_PCIPAR)) == 0x80000000) {
-			outl (tmp, PCI_REG(SH7751_PCIPAR));
-			printk(KERN_INFO "PCI: Using configuration type 1\n");
-			request_region(PCI_REG(SH7751_PCIPAR), 8, "PCI conf1");
-			return 0;
-		}
-		outl (tmp, PCI_REG(SH7751_PCIPAR));
-	}
-
-	pr_debug("PCI: pci_check_direct failed\n");
-	return -EINVAL;
-}
-
-/***************************************************************************************/
-
-/*
- *  Handle bus scanning and fixups ....
- */
-
-static void __init pci_fixup_ide_bases(struct pci_dev *d)
-{
-	int i;
-
-	/*
-	 * PCI IDE controllers use non-standard I/O port decoding, respect it.
-	 */
-	if ((d->class >> 8) != PCI_CLASS_STORAGE_IDE)
-		return;
-	pr_debug("PCI: IDE base address fixup for %s\n", pci_name(d));
-	for(i=0; i<4; i++) {
-		struct resource *r = &d->resource[i];
-		if ((r->start & ~0x80) == 0x374) {
-			r->start |= 2;
-			r->end = r->start;
-		}
-	}
-}
-
-DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pci_fixup_ide_bases);
-
-/*
- *  Called after each bus is probed, but before its children
- *  are examined.
- */
-
-void __init pcibios_fixup_bus(struct pci_bus *b)
-{
-	pci_read_bridge_bases(b);
-}
 
 /*
  * Initialization. Try all known PCI access methods. Note that we support
@@ -196,25 +30,29 @@ void __init pcibios_fixup_bus(struct pci_bus *b)
  * to access config space.
  * 
  * Note that the platform specific initialization (BSC registers, and memory
- * space mapping) will be called via the machine vectors (sh_mv.mv_pci_init()) if it
- * exitst and via the platform defined function pcibios_init_platform().  
- * See pci_bigsur.c for implementation;
- * 
- * The BIOS version of the pci functions is not yet implemented but it is left
- * in for completeness.  Currently an error will be genereated at compile time. 
+ * space mapping) will be called via the platform defined function
+ * pcibios_init_platform().
  */
-
 static int __init sh7751_pci_init(void)
 {
+	unsigned int id;
 	int ret;
 
 	pr_debug("PCI: Starting intialization.\n");
-	if ((ret = pci_check_direct()) != 0)
+
+	/* check for SH7751/SH7751R hardware */
+	id = pci_read_reg(SH7751_PCICONF0);
+	if (id != ((SH7751_DEVICE_ID << 16) | SH7751_VENDOR_ID) &&
+	    id != ((SH7751R_DEVICE_ID << 16) | SH7751_VENDOR_ID)) {
+		pr_debug("PCI: This is not an SH7751(R) (%x)\n", id);
+		return -ENODEV;
+	}
+
+	if ((ret = sh4_pci_check_direct()) != 0)
 		return ret;
 
 	return pcibios_init_platform();
 }
-
 subsys_initcall(sh7751_pci_init);
 
 static int __init __area_sdram_check(unsigned int area)
@@ -228,7 +66,7 @@ static int __init __area_sdram_check(unsigned int area)
 		       area, word);
 		return 0;
 	}
-	outl(word, PCI_REG(SH7751_PCIBCR1));
+	pci_write_reg(word, SH4_PCIBCR1);
 
 	word = (u16)inw(SH7751_BCR2);
 	/* check BCR2 for 32bit SDRAM interface*/
@@ -237,12 +75,12 @@ static int __init __area_sdram_check(unsigned int area)
 		       area, word);
 		return 0;
 	}
-	outl(word, PCI_REG(SH7751_PCIBCR2));
+	pci_write_reg(word, SH4_PCIBCR2);
 
 	return 1;
 }
 
-int __init sh7751_pcic_init(struct sh7751_pci_address_map *map)
+int __init sh7751_pcic_init(struct sh4_pci_address_map *map)
 {
 	u32 reg;
 	u32 word;
@@ -251,39 +89,39 @@ int __init sh7751_pcic_init(struct sh7751_pci_address_map *map)
 	reg = inl(SH7751_BCR1);
 	reg |= 0x80000;
 	outl(reg, SH7751_BCR1);
-	
+
 	/* Turn the clocks back on (not done in reset)*/
-	outl(0, PCI_REG(SH7751_PCICLKR));
+	pci_write_reg(0, SH4_PCICLKR);
 	/* Clear Powerdown IRQ's (not done in reset) */
-	word = SH7751_PCIPINT_D3 | SH7751_PCIPINT_D0;
-	outl(word, PCI_REG(SH7751_PCIPINT));
+	word = SH4_PCIPINT_D3 | SH4_PCIPINT_D0;
+	pci_write_reg(word, SH4_PCIPINT);
 
 	/*
 	 * This code is unused for some boards as it is done in the
 	 * bootloader and doing it here means the MAC addresses loaded
 	 * by the bootloader get lost.
 	 */
-	if (!(map->flags & SH7751_PCIC_NO_RESET)) {
+	if (!(map->flags & SH4_PCIC_NO_RESET)) {
 		/* toggle PCI reset pin */
-		word = SH7751_PCICR_PREFIX | SH7751_PCICR_PRST;
-		outl(word,PCI_REG(SH7751_PCICR));
+		word = SH4_PCICR_PREFIX | SH4_PCICR_PRST;
+		pci_write_reg(word, SH4_PCICR);
 		/* Wait for a long time... not 1 sec. but long enough */
 		mdelay(100);
-		word = SH7751_PCICR_PREFIX;
-		outl(word,PCI_REG(SH7751_PCICR));
+		word = SH4_PCICR_PREFIX;
+		pci_write_reg(word, SH4_PCICR);
 	}
-	
+
 	/* set the command/status bits to:
 	 * Wait Cycle Control + Parity Enable + Bus Master +
 	 * Mem space enable
 	 */
 	word = SH7751_PCICONF1_WCC | SH7751_PCICONF1_PER | 
 	       SH7751_PCICONF1_BUM | SH7751_PCICONF1_MES;
-	outl(word, PCI_REG(SH7751_PCICONF1));
+	pci_write_reg(word, SH7751_PCICONF1);
 
 	/* define this host as the host bridge */
-	word = SH7751_PCI_HOST_BRIDGE << 24;
-	outl(word, PCI_REG(SH7751_PCICONF2));
+	word = PCI_BASE_CLASS_BRIDGE << 24;
+	pci_write_reg(word, SH7751_PCICONF2);
 
 	/* Set IO and Mem windows to local address 
 	 * Make PCI and local address the same for easy 1 to 1 mapping 
@@ -291,46 +129,49 @@ int __init sh7751_pcic_init(struct sh7751_pci_address_map *map)
 	 * Window1 = map->window1.size @ cached area base = SDRAM 
 	 */
 	word = map->window0.size - 1;
-	outl(word, PCI_REG(SH7751_PCILSR0));
+	pci_write_reg(word, SH4_PCILSR0);
 	word = map->window1.size - 1;
-	outl(word, PCI_REG(SH7751_PCILSR1));
+	pci_write_reg(word, SH4_PCILSR1);
 	/* Set the values on window 0 PCI config registers */
 	word = P2SEGADDR(map->window0.base);
-	outl(word, PCI_REG(SH7751_PCILAR0));
-	outl(word, PCI_REG(SH7751_PCICONF5));
+	pci_write_reg(word, SH4_PCILAR0);
+	pci_write_reg(word, SH7751_PCICONF5);
 	/* Set the values on window 1 PCI config registers */
 	word =  PHYSADDR(map->window1.base);
-	outl(word, PCI_REG(SH7751_PCILAR1));
-	outl(word, PCI_REG(SH7751_PCICONF6));
+	pci_write_reg(word, SH4_PCILAR1);
+	pci_write_reg(word, SH7751_PCICONF6);
 
-	/* Set the local 16MB PCI memory space window to 
+	/* Set the local 16MB PCI memory space window to
 	 * the lowest PCI mapped address
 	 */
-	word = PCIBIOS_MIN_MEM & SH7751_PCIMBR_MASK;
-	PCIDBG(2,"PCI: Setting upper bits of Memory window to 0x%x\n", word);
-	outl(word , PCI_REG(SH7751_PCIMBR));
+	word = PCIBIOS_MIN_MEM & SH4_PCIMBR_MASK;
+	pr_debug("PCI: Setting upper bits of Memory window to 0x%x\n", word);
+	pci_write_reg(word , SH4_PCIMBR);
 
 	/* Map IO space into PCI IO window
 	 * The IO window is 64K-PCIBIOS_MIN_IO in size
-	 * IO addresses will be translated to the 
+	 * IO addresses will be translated to the
 	 * PCI IO window base address
 	 */
-	PCIDBG(3,"PCI: Mapping IO address 0x%x - 0x%x to base 0x%x\n", PCIBIOS_MIN_IO,
-	    (64*1024), SH7751_PCI_IO_BASE+PCIBIOS_MIN_IO);
+	pr_debug("PCI: Mapping IO address 0x%x - 0x%x to base 0x%x\n",
+		 PCIBIOS_MIN_IO, (64 << 10),
+		 SH4_PCI_IO_BASE + PCIBIOS_MIN_IO);
 
-	/* 
+	/*
 	 * XXX: For now, leave this board-specific. In the event we have other
 	 * boards that need to do similar work, this can be wrapped.
 	 */
 #ifdef CONFIG_SH_BIGSUR
-	bigsur_port_map(PCIBIOS_MIN_IO, (64*1024), SH7751_PCI_IO_BASE+PCIBIOS_MIN_IO,0);
+	bigsur_port_map(PCIBIOS_MIN_IO, (64 << 10),
+			SH4_PCI_IO_BASE + PCIBIOS_MIN_IO, 0);
 #endif
 
-	/* Make sure the MSB's of IO window are set to access PCI space correctly */
-	word = PCIBIOS_MIN_IO & SH7751_PCIIOBR_MASK;
-	PCIDBG(2,"PCI: Setting upper bits of IO window to 0x%x\n", word);
-	outl(word, PCI_REG(SH7751_PCIIOBR));
-	
+	/* Make sure the MSB's of IO window are set to access PCI space
+	 * correctly */
+	word = PCIBIOS_MIN_IO & SH4_PCIIOBR_MASK;
+	pr_debug("PCI: Setting upper bits of IO window to 0x%x\n", word);
+	pci_write_reg(word, SH4_PCIIOBR);
+
 	/* Set PCI WCRx, BCRx's, copy from BSC locations */
 
 	/* check BCR for SDRAM in specified area */
@@ -349,13 +190,13 @@ int __init sh7751_pcic_init(struct sh7751_pci_address_map *map)
 
 	/* configure the wait control registers */
 	word = inl(SH7751_WCR1);
-	outl(word, PCI_REG(SH7751_PCIWCR1));
+	pci_write_reg(word, SH4_PCIWCR1);
 	word = inl(SH7751_WCR2);
-	outl(word, PCI_REG(SH7751_PCIWCR2));
+	pci_write_reg(word, SH4_PCIWCR2);
 	word = inl(SH7751_WCR3);
-	outl(word, PCI_REG(SH7751_PCIWCR3));
+	pci_write_reg(word, SH4_PCIWCR3);
 	word = inl(SH7751_MCR);
-	outl(word, PCI_REG(SH7751_PCIMCR));
+	pci_write_reg(word, SH4_PCIMCR);
 
 	/* NOTE: I'm ignoring the PCI error IRQs for now..
 	 * TODO: add support for the internal error interrupts and
@@ -368,49 +209,8 @@ int __init sh7751_pcic_init(struct sh7751_pci_address_map *map)
 
 	/* SH7751 init done, set central function init complete */
 	/* use round robin mode to stop a device starving/overruning */
-	word = SH7751_PCICR_PREFIX | SH7751_PCICR_CFIN | SH7751_PCICR_ARBM;
-	outl(word,PCI_REG(SH7751_PCICR)); 
+	word = SH4_PCICR_PREFIX | SH4_PCICR_CFIN | SH4_PCICR_ARBM;
+	pci_write_reg(word, SH4_PCICR);
 
 	return 1;
 }
-
-char * __init pcibios_setup(char *str)
-{
-	if (!strcmp(str, "off")) {
-		pci_probe = 0;
-		return NULL;
-	}
-
-	return str;
-}
-
-/* 
- * 	IRQ functions 
- */
-static u8 __init sh7751_no_swizzle(struct pci_dev *dev, u8 *pin)
-{
-	/* no swizzling */
-	return PCI_SLOT(dev->devfn);
-}
-
-static int sh7751_pci_lookup_irq(struct pci_dev *dev, u8 slot, u8 pin)
-{
-	int irq = -1;
-
-	/* now lookup the actual IRQ on a platform specific basis (pci-'platform'.c) */
-	irq = pcibios_map_platform_irq(slot,pin);
-	if( irq < 0 ) {
-		pr_debug("PCI: Error mapping IRQ on device %s\n", pci_name(dev));
-		return irq;
-	}
-
-	pr_debug("Setting IRQ for slot %s to %d\n", pci_name(dev), irq);
-
-	return irq;
-}
-
-void __init pcibios_fixup_irqs(void)
-{
-	pci_fixup_irqs(sh7751_no_swizzle, sh7751_pci_lookup_irq);
-}
-
diff --git a/arch/sh/drivers/pci/pci-sh7751.h b/arch/sh/drivers/pci/pci-sh7751.h
index 1fee5cae10d1..68e3cb5e6bec 100644
--- a/arch/sh/drivers/pci/pci-sh7751.h
+++ b/arch/sh/drivers/pci/pci-sh7751.h
@@ -3,7 +3,7 @@
  *
  *  Dustin McIntire (dustin@sensoria.com) (c) 2001
  *  Paul Mundt (lethal@linux-sh.org) (c) 2003
- *	
+ *
  *  May be copied or modified under the terms of the GNU General Public
  *  License.  See linux/COPYING for more information.
  *
@@ -12,28 +12,6 @@
 #ifndef _PCI_SH7751_H_
 #define _PCI_SH7751_H_
 
-#include <linux/pci.h>
-
-/* set debug level 4=verbose...1=terse */
-//#define DEBUG_PCI 3
-#undef DEBUG_PCI
-
-#ifdef DEBUG_PCI
-#define PCIDBG(n, x...) { if(DEBUG_PCI>=n) printk(x); }
-#else
-#define PCIDBG(n, x...)
-#endif
-
-/* startup values */
-#define PCI_PROBE_BIOS 1
-#define PCI_PROBE_CONF1 2
-#define PCI_PROBE_CONF2 4
-#define PCI_NO_SORT 0x100
-#define PCI_BIOS_SORT 0x200
-#define PCI_NO_CHECKS 0x400
-#define PCI_ASSIGN_ROMS 0x1000
-#define PCI_BIOS_IRQ_SCAN 0x2000
-
 /* Platform Specific Values */
 #define SH7751_VENDOR_ID             0x1054
 #define SH7751_DEVICE_ID             0x3505
@@ -128,131 +106,6 @@
   #define SH7751_PCICONF17_PMEN      0x00010000  /* PME Enable */
   #define SH7751_PCICONF17_PWST      0x00000003  /* Power State */
 /* SH7715 Internal PCI Registers */
-#define SH7751_PCICR               0x100         /* PCI Control Register */
-  #define SH7751_PCICR_PREFIX        0xA5000000  /* CR prefix for write */
-  #define SH7751_PCICR_TRSB          0x00000200  /* Target Read Single */
-  #define SH7751_PCICR_BSWP          0x00000100  /* Target Byte Swap */
-  #define SH7751_PCICR_PLUP          0x00000080  /* Enable PCI Pullup */
-  #define SH7751_PCICR_ARBM          0x00000040  /* PCI Arbitration Mode */
-  #define SH7751_PCICR_MD            0x00000030  /* MD9 and MD10 status */
-  #define SH7751_PCICR_SERR          0x00000008  /* SERR output assert */
-  #define SH7751_PCICR_INTA          0x00000004  /* INTA output assert */
-  #define SH7751_PCICR_PRST          0x00000002  /* PCI Reset Assert */
-  #define SH7751_PCICR_CFIN          0x00000001  /* Central Fun. Init Done */
-#define SH7751_PCILSR0             0x104         /* PCI Local Space Register0 */
-#define SH7751_PCILSR1             0x108         /* PCI Local Space Register1 */
-#define SH7751_PCILAR0             0x10C         /* PCI Local Address Register1 */
-#define SH7751_PCILAR1             0x110         /* PCI Local Address Register1 */
-#define SH7751_PCIINT              0x114         /* PCI Interrupt Register */
-  #define SH7751_PCIINT_MLCK         0x00008000  /* Master Lock Error */
-  #define SH7751_PCIINT_TABT         0x00004000  /* Target Abort Error */
-  #define SH7751_PCIINT_TRET         0x00000200  /* Target Retry Error */
-  #define SH7751_PCIINT_MFDE         0x00000100  /* Master Func. Disable Error */
-  #define SH7751_PCIINT_PRTY         0x00000080  /* Address Parity Error */
-  #define SH7751_PCIINT_SERR         0x00000040  /* SERR Detection Error */
-  #define SH7751_PCIINT_TWDP         0x00000020  /* Tgt. Write Parity Error */
-  #define SH7751_PCIINT_TRDP         0x00000010  /* Tgt. Read Parity Error Det. */
-  #define SH7751_PCIINT_MTABT        0x00000008  /* Master-Tgt. Abort Error */
-  #define SH7751_PCIINT_MMABT        0x00000004  /* Master-Master Abort Error */
-  #define SH7751_PCIINT_MWPD         0x00000002  /* Master Write PERR Detect */
-  #define SH7751_PCIINT_MRPD         0x00000002  /* Master Read PERR Detect */
-#define SH7751_PCIINTM             0x118         /* PCI Interrupt Mask Register */
-#define SH7751_PCIALR              0x11C         /* Error Address Register */
-#define SH7751_PCICLR              0x120         /* Error Command/Data Register */
-  #define SH7751_PCICLR_MPIO         0x80000000  /* Error Command/Data Register */
-  #define SH7751_PCICLR_MDMA0        0x40000000  /* DMA0 Transfer Error */
-  #define SH7751_PCICLR_MDMA1        0x20000000  /* DMA1 Transfer Error */
-  #define SH7751_PCICLR_MDMA2        0x10000000  /* DMA2 Transfer Error */
-  #define SH7751_PCICLR_MDMA3        0x08000000  /* DMA3 Transfer Error */
-  #define SH7751_PCICLR_TGT          0x04000000  /* Target Transfer Error */
-  #define SH7751_PCICLR_CMDL         0x0000000F  /* PCI Command at Error */
-#define SH7751_PCIAINT             0x130         /* Arbiter Interrupt Register */
-  #define SH7751_PCIAINT_MBKN        0x00002000  /* Master Broken Interrupt */
-  #define SH7751_PCIAINT_TBTO        0x00001000  /* Target Bus Time Out */
-  #define SH7751_PCIAINT_MBTO        0x00001000  /* Master Bus Time Out */
-  #define SH7751_PCIAINT_TABT        0x00000008  /* Target Abort */
-  #define SH7751_PCIAINT_MABT        0x00000004  /* Master Abort */
-  #define SH7751_PCIAINT_RDPE        0x00000002  /* Read Data Parity Error */
-  #define SH7751_PCIAINT_WDPE        0x00000002  /* Write Data Parity Error */
-#define SH7751_PCIAINTM            0x134         /* Arbiter Int. Mask Register */
-#define SH7751_PCIBMLR             0x138         /* Error Bus Master Register */
-  #define SH7751_PCIBMLR_REQ4        0x00000010  /* REQ4 bus master at error */
-  #define SH7751_PCIBMLR_REQ3        0x00000008  /* REQ3 bus master at error */
-  #define SH7751_PCIBMLR_REQ2        0x00000004  /* REQ2 bus master at error */
-  #define SH7751_PCIBMLR_REQ1        0x00000002  /* REQ1 bus master at error */
-  #define SH7751_PCIBMLR_REQ0        0x00000001  /* REQ0 bus master at error */
-#define SH7751_PCIDMABT            0x140         /* DMA Transfer Arb. Register */
-  #define SH7751_PCIDMABT_RRBN       0x00000001  /* DMA Arbitor Round-Robin */
-#define SH7751_PCIDPA0             0x180         /* DMA0 Transfer Addr. Register */
-#define SH7751_PCIDLA0             0x184         /* DMA0 Local Addr. Register */
-#define SH7751_PCIDTC0             0x188         /* DMA0 Transfer Cnt. Register */
-#define SH7751_PCIDCR0             0x18C         /* DMA0 Control Register */
-  #define SH7751_PCIDCR_ALGN         0x00000600  /* DMA Alignment Mode */
-  #define SH7751_PCIDCR_MAST         0x00000100  /* DMA Termination Type */
-  #define SH7751_PCIDCR_INTM         0x00000080  /* DMA Interrupt Done Mask*/
-  #define SH7751_PCIDCR_INTS         0x00000040  /* DMA Interrupt Done Status */
-  #define SH7751_PCIDCR_LHLD         0x00000020  /* Local Address Control */
-  #define SH7751_PCIDCR_PHLD         0x00000010  /* PCI Address Control*/
-  #define SH7751_PCIDCR_IOSEL        0x00000008  /* PCI Address Space Type */
-  #define SH7751_PCIDCR_DIR          0x00000004  /* DMA Transfer Direction */
-  #define SH7751_PCIDCR_STOP         0x00000002  /* Force DMA Stop */
-  #define SH7751_PCIDCR_STRT         0x00000001  /* DMA Start */
-#define SH7751_PCIDPA1             0x190         /* DMA1 Transfer Addr. Register */
-#define SH7751_PCIDLA1             0x194         /* DMA1 Local Addr. Register */
-#define SH7751_PCIDTC1             0x198         /* DMA1 Transfer Cnt. Register */
-#define SH7751_PCIDCR1             0x19C         /* DMA1 Control Register */
-#define SH7751_PCIDPA2             0x1A0         /* DMA2 Transfer Addr. Register */
-#define SH7751_PCIDLA2             0x1A4         /* DMA2 Local Addr. Register */
-#define SH7751_PCIDTC2             0x1A8         /* DMA2 Transfer Cnt. Register */
-#define SH7751_PCIDCR2             0x1AC         /* DMA2 Control Register */
-#define SH7751_PCIDPA3             0x1B0         /* DMA3 Transfer Addr. Register */
-#define SH7751_PCIDLA3             0x1B4         /* DMA3 Local Addr. Register */
-#define SH7751_PCIDTC3             0x1B8         /* DMA3 Transfer Cnt. Register */
-#define SH7751_PCIDCR3             0x1BC         /* DMA3 Control Register */
-#define SH7751_PCIPAR              0x1C0         /* PIO Address Register */
-  #define SH7751_PCIPAR_CFGEN        0x80000000  /* Configuration Enable */
-  #define SH7751_PCIPAR_BUSNO        0x00FF0000  /* Config. Bus Number */
-  #define SH7751_PCIPAR_DEVNO        0x0000FF00  /* Config. Device Number */
-  #define SH7751_PCIPAR_REGAD        0x000000FC  /* Register Address Number */
-#define SH7751_PCIMBR              0x1C4         /* Memory Base Address Register */
-  #define SH7751_PCIMBR_MASK         0xFF000000  /* Memory Space Mask */
-  #define SH7751_PCIMBR_LOCK         0x00000001  /* Lock Memory Space */
-#define SH7751_PCIIOBR             0x1C8         /* I/O Base Address Register */
-  #define SH7751_PCIIOBR_MASK         0xFFFC0000 /* IO Space Mask */
-  #define SH7751_PCIIOBR_LOCK         0x00000001 /* Lock IO Space */
-#define SH7751_PCIPINT             0x1CC         /* Power Mgmnt Int. Register */
-  #define SH7751_PCIPINT_D3           0x00000002 /* D3 Pwr Mgmt. Interrupt */
-  #define SH7751_PCIPINT_D0           0x00000001 /* D0 Pwr Mgmt. Interrupt */  
-#define SH7751_PCIPINTM            0x1D0         /* Power Mgmnt Mask Register */
-#define SH7751_PCICLKR             0x1D4         /* Clock Ctrl. Register */
-  #define SH7751_PCICLKR_PCSTP        0x00000002 /* PCI Clock Stop */
-  #define SH7751_PCICLKR_BCSTP        0x00000002 /* BCLK Clock Stop */
-/* For definitions of BCR, MCR see ... */
-#define SH7751_PCIBCR1             0x1E0         /* Memory BCR1 Register */
-#define SH7751_PCIBCR2             0x1E4         /* Memory BCR2 Register */
-#define SH7751_PCIWCR1             0x1E8         /* Wait Control 1 Register */
-#define SH7751_PCIWCR2             0x1EC         /* Wait Control 2 Register */
-#define SH7751_PCIWCR3             0x1F0         /* Wait Control 3 Register */
-#define SH7751_PCIMCR              0x1F4         /* Memory Control Register */
-#define SH7751_PCIBCR3		   0x1f8	 /* Memory BCR3 Register */
-#define SH7751_PCIPCTR             0x200         /* Port Control Register */
-  #define SH7751_PCIPCTR_P2EN        0x000400000 /* Port 2 Enable */
-  #define SH7751_PCIPCTR_P1EN        0x000200000 /* Port 1 Enable */
-  #define SH7751_PCIPCTR_P0EN        0x000100000 /* Port 0 Enable */
-  #define SH7751_PCIPCTR_P2UP        0x000000020 /* Port2 Pull Up Enable */
-  #define SH7751_PCIPCTR_P2IO        0x000000010 /* Port2 Output Enable */
-  #define SH7751_PCIPCTR_P1UP        0x000000008 /* Port1 Pull Up Enable */
-  #define SH7751_PCIPCTR_P1IO        0x000000004 /* Port1 Output Enable */
-  #define SH7751_PCIPCTR_P0UP        0x000000002 /* Port0 Pull Up Enable */
-  #define SH7751_PCIPCTR_P0IO        0x000000001 /* Port0 Output Enable */
-#define SH7751_PCIPDTR             0x204         /* Port Data Register */
-  #define SH7751_PCIPDTR_PB5         0x000000020 /* Port 5 Enable */
-  #define SH7751_PCIPDTR_PB4         0x000000010 /* Port 4 Enable */
-  #define SH7751_PCIPDTR_PB3         0x000000008 /* Port 3 Enable */
-  #define SH7751_PCIPDTR_PB2         0x000000004 /* Port 2 Enable */
-  #define SH7751_PCIPDTR_PB1         0x000000002 /* Port 1 Enable */
-  #define SH7751_PCIPDTR_PB0         0x000000001 /* Port 0 Enable */
-#define SH7751_PCIPDR              0x220         /* Port IO Data Register */
 
 /* Memory Control Registers */
 #define SH7751_BCR1                0xFF800000    /* Memory BCR1 Register */
@@ -274,30 +127,9 @@
 #define SH7751_CS5_BASE_ADDR       (SH7751_CS4_BASE_ADDR + SH7751_MEM_REGION_SIZE)
 #define SH7751_CS6_BASE_ADDR       (SH7751_CS5_BASE_ADDR + SH7751_MEM_REGION_SIZE)
 
-/* General PCI values */
-#define SH7751_PCI_HOST_BRIDGE		0x6
-
-/* Flags */
-#define SH7751_PCIC_NO_RESET	0x0001
-
-/* External functions defined per platform i.e. Big Sur, SE... (these could be routed 
- * through the machine vectors... */
-extern int pcibios_init_platform(void);
-extern int pcibios_map_platform_irq(u8 slot, u8 pin);
-
-struct sh7751_pci_address_space {
-	unsigned long base;
-	unsigned long size;
-};
-
-struct sh7751_pci_address_map {
-	struct sh7751_pci_address_space window0;
-	struct sh7751_pci_address_space window1;
-	unsigned long flags;
-};
+struct sh4_pci_address_map;
 
 /* arch/sh/drivers/pci/pci-sh7751.c */
-extern int sh7751_pcic_init(struct sh7751_pci_address_map *map);
+int sh7751_pcic_init(struct sh4_pci_address_map *map);
 
 #endif /* _PCI_SH7751_H_ */
-
diff --git a/arch/sh/drivers/pci/pci-sh7780.c b/arch/sh/drivers/pci/pci-sh7780.c
index e09721330ac2..bd3064a82087 100644
--- a/arch/sh/drivers/pci/pci-sh7780.c
+++ b/arch/sh/drivers/pci/pci-sh7780.c
@@ -20,197 +20,36 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/pci.h>
-#include <linux/sched.h>
-#include <linux/ioport.h>
 #include <linux/errno.h>
-#include <linux/irq.h>
 #include <linux/delay.h>
-
-#include <asm/machvec.h>
-#include <asm/io.h>
-#include "pci-sh7780.h"
-
-static unsigned int pci_probe = PCI_PROBE_CONF1;
-extern int pci_fixup_pcic(void);
-
-/*
- * Direct access to PCI hardware...
- */
-
-#define CONFIG_CMD(bus, devfn, where) (0x80000000 | (bus->number << 16) | (devfn << 8) | (where & ~3))
-
-/*
- * Functions for accessing PCI configuration space with type 1 accesses
- */
-static int sh7780_pci_read(struct pci_bus *bus, unsigned int devfn,
-			   int where, int size, u32 *val)
-{
-	unsigned long flags;
-	u32 data;
-
-	/*
-	 * PCIPDR may only be accessed as 32 bit words,
-	 * so we must do byte alignment by hand
-	 */
-	local_irq_save(flags);
-	outl(CONFIG_CMD(bus, devfn, where), PCI_REG(SH7780_PCIPAR));
-	data = inl(PCI_REG(SH7780_PCIPDR));
-	local_irq_restore(flags);
-
-	switch (size) {
-	case 1:
-		*val = (data >> ((where & 3) << 3)) & 0xff;
-		break;
-	case 2:
-		*val = (data >> ((where & 2) << 3)) & 0xffff;
-		break;
-	case 4:
-		*val = data;
-		break;
-	default:
-		return PCIBIOS_FUNC_NOT_SUPPORTED;
-	}
-
-	return PCIBIOS_SUCCESSFUL;
-}
+#include "pci-sh4.h"
 
 /*
- * Since SH7780 only does 32bit access we'll have to do a read,
- * mask,write operation.
- * We'll allow an odd byte offset, though it should be illegal.
+ * Initialization. Try all known PCI access methods. Note that we support
+ * using both PCI BIOS and direct access: in such cases, we use I/O ports
+ * to access config space.
+ *
+ * Note that the platform specific initialization (BSC registers, and memory
+ * space mapping) will be called via the platform defined function
+ * pcibios_init_platform().
  */
-static int sh7780_pci_write(struct pci_bus *bus, unsigned int devfn,
-			    int where, int size, u32 val)
+static int __init sh7780_pci_init(void)
 {
-	unsigned long flags;
-	int shift;
-	u32 data;
-
-	local_irq_save(flags);
-	outl(CONFIG_CMD(bus, devfn, where), PCI_REG(SH7780_PCIPAR));
-	data = inl(PCI_REG(SH7780_PCIPDR));
-	local_irq_restore(flags);
-
-	switch (size) {
-	case 1:
-		shift = (where & 3) << 3;
-		data &= ~(0xff << shift);
-		data |= ((val & 0xff) << shift);
-		break;
-	case 2:
-		shift = (where & 2) << 3;
-		data &= ~(0xffff << shift);
-		data |= ((val & 0xffff) << shift);
-		break;
-	case 4:
-		data = val;
-		break;
-	default:
-		return PCIBIOS_FUNC_NOT_SUPPORTED;
-	}
-
-	outl(data, PCI_REG(SH7780_PCIPDR));
-
-	return PCIBIOS_SUCCESSFUL;
-}
-
-#undef CONFIG_CMD
-
-struct pci_ops sh7780_pci_ops = {
-	.read		= sh7780_pci_read,
-	.write		= sh7780_pci_write,
-};
+	unsigned int id;
+	int ret;
 
-static int __init pci_check_direct(void)
-{
-	unsigned int tmp, id;
+	pr_debug("PCI: Starting intialization.\n");
 
 	outl(0x00000001, SH7780_PCI_VCR2); /* Enable PCIC */
 
 	/* check for SH7780/SH7780R hardware */
-	id = inl(PCI_REG(SH7780_PCIVID));
+	id = pci_read_reg(SH7780_PCIVID);
 	if ((id != ((SH7780_DEVICE_ID << 16) | SH7780_VENDOR_ID)) &&
 	    (id != ((SH7781_DEVICE_ID << 16) | SH7780_VENDOR_ID))) {
 		printk(KERN_ERR "PCI: This is not an SH7780 (%x)\n", id);
 		return -ENODEV;
 	}
 
-	/*
-	 * Check if configuration works.
-	 */
-	if (pci_probe & PCI_PROBE_CONF1) {
-		tmp = inl(PCI_REG(SH7780_PCIPAR));
-		outl(0x80000000, PCI_REG(SH7780_PCIPAR));
-		if (inl(PCI_REG(SH7780_PCIPAR)) == 0x80000000) {
-			outl(tmp, PCI_REG(SH7780_PCIPAR));
-			printk(KERN_INFO "PCI: Using configuration type 1\n");
-			request_region(PCI_REG(SH7780_PCIPAR), 8, "PCI conf1");
-			return 0;
-		}
-		outl(tmp, PCI_REG(SH7780_PCIPAR));
-	}
-
-	pr_debug("PCI: pci_check_direct failed\n");
-	return -EINVAL;
-}
-
-/***************************************************************************************/
-
-/*
- *  Handle bus scanning and fixups ....
- */
-
-static void __init pci_fixup_ide_bases(struct pci_dev *d)
-{
-	int i;
-
-	/*
-	 * PCI IDE controllers use non-standard I/O port decoding, respect it.
-	 */
-	if ((d->class >> 8) != PCI_CLASS_STORAGE_IDE)
-		return;
-	pr_debug("PCI: IDE base address fixup for %s\n", pci_name(d));
-	for(i=0; i<4; i++) {
-		struct resource *r = &d->resource[i];
-		if ((r->start & ~0x80) == 0x374) {
-			r->start |= 2;
-			r->end = r->start;
-		}
-	}
-}
-
-DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pci_fixup_ide_bases);
-
-/*
- *  Called after each bus is probed, but before its children
- *  are examined.
- */
-
-void __init pcibios_fixup_bus(struct pci_bus *b)
-{
-	pci_read_bridge_bases(b);
-}
-
-/*
- * Initialization. Try all known PCI access methods. Note that we support
- * using both PCI BIOS and direct access: in such cases, we use I/O ports
- * to access config space.
- *
- * Note that the platform specific initialization (BSC registers, and memory
- * space mapping) will be called via the machine vectors (sh_mv.mv_pci_init()) if it
- * exists and via the platform defined function pcibios_init_platform().
- * See pci_bigsur.c for implementation;
- *
- * The BIOS version of the pci functions is not yet implemented but it is left
- * in for completeness.  Currently an error will be genereated at compile time.
- */
-
-static int __init sh7780_pci_init(void)
-{
-	int ret;
-
-	pr_debug("PCI: Starting intialization.\n");
-
 	/* Setup the INTC */
 	ctrl_outl(0x00200000, INTC_ICR0);	/* INTC SH-4 Mode */
 	ctrl_outl(0x00078000, INTC_INT2MSKCR);	/* enable PCIINTA - PCIINTD */
@@ -219,15 +58,14 @@ static int __init sh7780_pci_init(void)
 	ctrl_outl(0x80000000, INTC_INTMSKCLR1);	/* enable IRL0-3 Interrupt */
 	ctrl_outl(0xfffe0000, INTC_INTMSKCLR2);	/* enable IRL0-3 Interrupt */
 
-	if ((ret = pci_check_direct()) != 0)
+	if ((ret = sh4_pci_check_direct()) != 0)
 		return ret;
 
 	return pcibios_init_platform();
 }
-
 core_initcall(sh7780_pci_init);
 
-int __init sh7780_pcic_init(struct sh7780_pci_address_map *map)
+int __init sh7780_pcic_init(struct sh4_pci_address_map *map)
 {
 	u32 word;
 
@@ -236,25 +74,25 @@ int __init sh7780_pcic_init(struct sh7780_pci_address_map *map)
 	 * bootloader and doing it here means the MAC addresses loaded
 	 * by the bootloader get lost.
 	 */
-	if (!(map->flags & SH7780_PCIC_NO_RESET)) {
+	if (!(map->flags & SH4_PCIC_NO_RESET)) {
 		/* toggle PCI reset pin */
-		word = SH7780_PCICR_PREFIX | SH7780_PCICR_PRST;
-		outl(word,PCI_REG(SH7780_PCICR));
+		word = SH4_PCICR_PREFIX | SH4_PCICR_PRST;
+		pci_write_reg(word, SH4_PCICR);
 		/* Wait for a long time... not 1 sec. but long enough */
 		mdelay(100);
-		word = SH7780_PCICR_PREFIX;
-		outl(word,PCI_REG(SH7780_PCICR));
+		word = SH4_PCICR_PREFIX;
+		pci_write_reg(word, SH4_PCICR);
 	}
 
 	/* set the command/status bits to:
 	 * Wait Cycle Control + Parity Enable + Bus Master +
 	 * Mem space enable
 	 */
-	outl(0x00000046, PCI_REG(SH7780_PCICMD));
+	pci_write_reg(0x00000046, SH7780_PCICMD);
 
 	/* define this host as the host bridge */
-	word = SH7780_PCI_HOST_BRIDGE << 24;
-	outl(word, PCI_REG(SH7780_PCIRID));
+	word = PCI_BASE_CLASS_BRIDGE << 24;
+	pci_write_reg(word, SH7780_PCIRID);
 
 	/* Set IO and Mem windows to local address
 	 * Make PCI and local address the same for easy 1 to 1 mapping
@@ -262,25 +100,26 @@ int __init sh7780_pcic_init(struct sh7780_pci_address_map *map)
 	 * Window1 = map->window1.size @ cached area base = SDRAM
 	 */
 	word = ((map->window0.size - 1) & 0x1ff00001) | 0x01;
-	outl(0x07f00001, PCI_REG(SH7780_PCILSR0));
+	pci_write_reg(0x07f00001, SH4_PCILSR0);
 	word = ((map->window1.size - 1) & 0x1ff00001) | 0x01;
-	outl(0x00000001, PCI_REG(SH7780_PCILSR1));
+	pci_write_reg(0x00000001, SH4_PCILSR1);
 	/* Set the values on window 0 PCI config registers */
 	word = P2SEGADDR(map->window0.base);
-	outl(0xa8000000, PCI_REG(SH7780_PCILAR0));
-	outl(0x08000000, PCI_REG(SH7780_PCIMBAR0));
+	pci_write_reg(0xa8000000, SH4_PCILAR0);
+	pci_write_reg(0x08000000, SH7780_PCIMBAR0);
 	/* Set the values on window 1 PCI config registers */
 	word = P2SEGADDR(map->window1.base);
-	outl(0x00000000, PCI_REG(SH7780_PCILAR1));
-	outl(0x00000000, PCI_REG(SH7780_PCIMBAR1));
+	pci_write_reg(0x00000000, SH4_PCILAR1);
+	pci_write_reg(0x00000000, SH7780_PCIMBAR1);
 
 	/* Map IO space into PCI IO window
 	 * The IO window is 64K-PCIBIOS_MIN_IO in size
 	 * IO addresses will be translated to the
 	 * PCI IO window base address
 	 */
-	PCIDBG(3,"PCI: Mapping IO address 0x%x - 0x%x to base 0x%x\n", PCIBIOS_MIN_IO,
-	    (64*1024), SH7780_PCI_IO_BASE+PCIBIOS_MIN_IO);
+	pr_debug("PCI: Mapping IO address 0x%x - 0x%x to base 0x%x\n",
+		 PCIBIOS_MIN_IO, (64 << 10),
+		 SH7780_PCI_IO_BASE + PCIBIOS_MIN_IO);
 
 	/* NOTE: I'm ignoring the PCI error IRQs for now..
 	 * TODO: add support for the internal error interrupts and
@@ -293,49 +132,8 @@ int __init sh7780_pcic_init(struct sh7780_pci_address_map *map)
 
 	/* SH7780 init done, set central function init complete */
 	/* use round robin mode to stop a device starving/overruning */
-	word = SH7780_PCICR_PREFIX | SH7780_PCICR_CFIN | /* SH7780_PCICR_ARBM |*/ SH7780_PCICR_FTO;
-	outl(word, PCI_REG(SH7780_PCICR));
+	word = SH4_PCICR_PREFIX | SH4_PCICR_CFIN | SH4_PCICR_FTO;
+	pci_write_reg(word, SH4_PCICR);
 
 	return 1;
 }
-
-char * __init pcibios_setup(char *str)
-{
-	if (!strcmp(str, "off")) {
-		pci_probe = 0;
-		return NULL;
-	}
-
-	return str;
-}
-
-/*
- *	IRQ functions
- */
-static u8 __init sh7780_no_swizzle(struct pci_dev *dev, u8 *pin)
-{
-	/* no swizzling */
-	return PCI_SLOT(dev->devfn);
-}
-
-static int sh7780_pci_lookup_irq(struct pci_dev *dev, u8 slot, u8 pin)
-{
-	int irq = -1;
-
-	/* now lookup the actual IRQ on a platform specific basis (pci-'platform'.c) */
-	irq = pcibios_map_platform_irq(slot,pin);
-	if( irq < 0 ) {
-		pr_debug("PCI: Error mapping IRQ on device %s\n", pci_name(dev));
-		return irq;
-	}
-
-	pr_debug("Setting IRQ for slot %s to %d\n", pci_name(dev), irq);
-
-	return irq;
-}
-
-void __init pcibios_fixup_irqs(void)
-{
-	pci_fixup_irqs(sh7780_no_swizzle, sh7780_pci_lookup_irq);
-}
-
diff --git a/arch/sh/drivers/pci/pci-sh7780.h b/arch/sh/drivers/pci/pci-sh7780.h
index 750d5d7753a2..f02d2180a4bc 100644
--- a/arch/sh/drivers/pci/pci-sh7780.h
+++ b/arch/sh/drivers/pci/pci-sh7780.h
@@ -12,28 +12,6 @@
 #ifndef _PCI_SH7780_H_
 #define _PCI_SH7780_H_
 
-#include <linux/pci.h>
-
-/* set debug level 4=verbose...1=terse */
-//#define DEBUG_PCI 3
-#undef DEBUG_PCI
-
-#ifdef DEBUG_PCI
-#define PCIDBG(n, x...) { if(DEBUG_PCI>=n) printk(x); }
-#else
-#define PCIDBG(n, x...)
-#endif
-
-/* startup values */
-#define PCI_PROBE_BIOS		1
-#define PCI_PROBE_CONF1		2
-#define PCI_PROBE_CONF2		4
-#define PCI_NO_SORT		0x100
-#define PCI_BIOS_SORT		0x200
-#define PCI_NO_CHECKS		0x400
-#define PCI_ASSIGN_ROMS		0x1000
-#define PCI_BIOS_IRQ_SCAN	0x2000
-
 /* Platform Specific Values */
 #define SH7780_VENDOR_ID	0x1912
 #define SH7780_DEVICE_ID	0x0002
@@ -47,15 +25,12 @@
 /* SH7780 Specific Values */
 #define SH7780_PCI_CONFIG_BASE	0xFD000000	/* Config space base addr */
 #define SH7780_PCI_CONFIG_SIZE	0x01000000	/* Config space size */
+
 #define SH7780_PCI_MEMORY_BASE	0xFD000000	/* Memory space base addr */
 #define SH7780_PCI_MEM_SIZE	0x01000000	/* Size of Memory window */
-#if 1
+
 #define SH7780_PCI_IO_BASE	0xFE400000	/* IO space base address */
 #define SH7780_PCI_IO_SIZE	0x00400000	/* Size of IO window */
-#else
-#define SH7780_PCI_IO_BASE	0xFE200000	/* IO space base address */
-#define SH7780_PCI_IO_SIZE	0x00200000	/* Size of IO window */
-#endif
 
 #define SH7780_PCIREG_BASE	0xFE040000	/* PCI regs base address */
 #define PCI_REG(n)		(SH7780_PCIREG_BASE+n)
@@ -90,44 +65,16 @@
 #define SH7780_PCIPMCSR_BSE	0x046
 #define SH7780_PCICDD		0x047
 
-/* SH7780 PCI Local Registers */
-#define SH7780_PCICR		0x100		/* PCI Control Register */
-  #define SH7780_PCICR_PREFIX	0xA5000000	/* CR prefix for write */
-  #define SH7780_PCICR_PFCS	0x00000800	/* TRDY/IRDY Enable */
-  #define SH7780_PCICR_FTO	0x00000400	/* TRDY/IRDY Enable */
-  #define SH7780_PCICR_PFE	0x00000200	/* Target Read Single */
-  #define SH7780_PCICR_TBS	0x00000100	/* Target Byte Swap */
-  #define SH7780_PCICR_ARBM	0x00000040	/* PCI Arbitration Mode */
-  #define SH7780_PCICR_IOCS	0x00000004	/* INTA output assert */
-  #define SH7780_PCICR_PRST	0x00000002	/* PCI Reset Assert */
-  #define SH7780_PCICR_CFIN	0x00000001	/* Central Fun. Init Done */
-#define SH7780_PCILSR0		0x104		/* PCI Local Space Register0 */
-#define SH7780_PCILSR1		0x108		/* PCI Local Space Register1 */
-#define SH7780_PCILAR0		0x10C	/* PCI Local Address Register1 */
-#define SH7780_PCILAR1		0x110	/* PCI Local Address Register1 */
-#define SH7780_PCIIR		0x114		/* PCI Interrupt Register */
-#define SH7780_PCIIMR		0x118	/* PCI Interrupt Mask Register */
-#define SH7780_PCIAIR		0x11C		/* Error Address Register */
-#define SH7780_PCICIR		0x120	/* Error Command/Data Register */
-#define SH7780_PCIAINT		0x130		/* Arbiter Interrupt Register */
-#define SH7780_PCIAINTM		0x134		/* Arbiter Int. Mask Register */
-#define SH7780_PCIBMIR		0x138		/* Error Bus Master Register */
-#define SH7780_PCIPAR		0x1C0		/* PIO Address Register */
-#define SH7780_PCIPINT		0x1CC	/* Power Management Int. Register */
-#define SH7780_PCIPINTM		0x1D0	/* Power Management Mask Register */
-#define SH7780_PCIMBR0		0x1E0		/* Memory Bank0 Register */
-#define SH7780_PCIMBMR0		0x1E4		/* Memory Bank0 Mask Register */
-#define SH7780_PCIMBR1		0x1E8		/* Memory Bank1  Register */
-#define SH7780_PCIMBMR1		0x1EC		/* Memory Bank1 Mask Register */
-#define SH7780_PCIMBR2		0x1F0		/* Memory Bank2 Register */
-#define SH7780_PCIMBMR2		0x1F4		/* Memory Bank2 Mask Register */
-#define SH7780_PCIIOBR		0x1F8		/* Bank Register */
-#define SH7780_PCIIOBMR		0x1FC		/* Bank Mask Register */
+#define SH7780_PCIMBR0		0x1E0
+#define SH7780_PCIMBMR0		0x1E4
+#define SH7780_PCIMBR2		0x1F0
+#define SH7780_PCIMBMR2		0x1F4
+#define SH7780_PCIIOBR		0x1F8
+#define SH7780_PCIIOBMR		0x1FC
 #define SH7780_PCICSCR0		0x210		/* Cache Snoop1 Cnt. Register */
 #define SH7780_PCICSCR1		0x214		/* Cache Snoop2 Cnt. Register */
 #define SH7780_PCICSAR0		0x218	/* Cache Snoop1 Addr. Register */
 #define SH7780_PCICSAR1		0x21C	/* Cache Snoop2 Addr. Register */
-#define SH7780_PCIPDR		0x220		/* Port IO Data Register */
 
 /* General Memory Config Addresses */
 #define SH7780_CS0_BASE_ADDR	0x0
@@ -139,30 +86,9 @@
 #define SH7780_CS5_BASE_ADDR	(SH7780_CS4_BASE_ADDR + SH7780_MEM_REGION_SIZE)
 #define SH7780_CS6_BASE_ADDR	(SH7780_CS5_BASE_ADDR + SH7780_MEM_REGION_SIZE)
 
-/* General PCI values */
-#define SH7780_PCI_HOST_BRIDGE	0x6
-
-/* Flags */
-#define SH7780_PCIC_NO_RESET	0x0001
-
-/* External functions defined per platform i.e. Big Sur, SE... (these could be routed
- * through the machine vectors... */
-extern int pcibios_init_platform(void);
-extern int pcibios_map_platform_irq(u8 slot, u8 pin);
-
-struct sh7780_pci_address_space {
-	unsigned long base;
-	unsigned long size;
-};
-
-struct sh7780_pci_address_map {
-	struct sh7780_pci_address_space window0;
-	struct sh7780_pci_address_space window1;
-	unsigned long flags;
-};
+struct sh4_pci_address_map;
 
 /* arch/sh/drivers/pci/pci-sh7780.c */
-extern int sh7780_pcic_init(struct sh7780_pci_address_map *map);
+int sh7780_pcic_init(struct sh4_pci_address_map *map);
 
 #endif /* _PCI_SH7780_H_ */
-
diff --git a/arch/sh/drivers/pci/pci-st40.c b/arch/sh/drivers/pci/pci-st40.c
index 7c81b8b65bb5..4ab5ea6b35fb 100644
--- a/arch/sh/drivers/pci/pci-st40.c
+++ b/arch/sh/drivers/pci/pci-st40.c
@@ -70,12 +70,6 @@
 static void pci_set_rbar_region(unsigned int region,     unsigned long localAddr,
 			 unsigned long pciOffset, unsigned long regionSize);
 
-/*
- * The pcibios_map_platform_irq function is defined in the appropriate
- * board specific code and referenced here
- */
-extern int __init pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin);
-
 static __init void SetPCIPLL(void)
 {
 	{
@@ -422,13 +416,6 @@ struct pci_ops st40pci_config_ops = {
 /* Everything hangs off this */
 static struct pci_bus *pci_root_bus;
 
-
-static u8 __init no_swizzle(struct pci_dev *dev, u8 * pin)
-{
-	return PCI_SLOT(dev->devfn);
-}
-
-
 static int __init pcibios_init(void)
 {
 	extern unsigned long memory_start, memory_end;
@@ -465,17 +452,11 @@ static int __init pcibios_init(void)
 	/* ok, do the scan man */
 	pci_root_bus = pci_scan_bus(0, &st40pci_config_ops, NULL);
 	pci_assign_unassigned_resources();
-	pci_fixup_irqs(no_swizzle, pcibios_map_platform_irq);
 
 	return 0;
 }
-
 subsys_initcall(pcibios_init);
 
-void __init pcibios_fixup_bus(struct pci_bus *bus)
-{
-}
-
 /*
  * Publish a region of local address space over the PCI bus
  * to other devices.
diff --git a/arch/sh/drivers/pci/pci.c b/arch/sh/drivers/pci/pci.c
index 285dffd12bd8..7377a8a8e161 100644
--- a/arch/sh/drivers/pci/pci.c
+++ b/arch/sh/drivers/pci/pci.c
@@ -21,6 +21,26 @@
 #include <linux/init.h>
 #include <asm/io.h>
 
+static inline u8 bridge_swizzle(u8 pin, u8 slot)
+{
+	return (((pin - 1) + slot) % 4) + 1;
+}
+
+static u8 __init simple_swizzle(struct pci_dev *dev, u8 *pinp)
+{
+	u8 pin = *pinp;
+
+	while (dev->bus->parent) {
+		pin = bridge_swizzle(pin, PCI_SLOT(dev->devfn));
+		/* Move up the chain of bridges. */
+		dev = dev->bus->self;
+	}
+	*pinp = pin;
+
+	/* The slot is the slot of the last bridge. */
+	return PCI_SLOT(dev->devfn);
+}
+
 static int __init pcibios_init(void)
 {
 	struct pci_channel *p;
@@ -36,19 +56,26 @@ static int __init pcibios_init(void)
 
 	/* scan the buses */
 	busno = 0;
-	for (p= board_pci_channels; p->pci_ops != NULL; p++) {
+	for (p = board_pci_channels; p->pci_ops != NULL; p++) {
 		bus = pci_scan_bus(busno, p->pci_ops, p);
-		busno = bus->subordinate+1;
+		busno = bus->subordinate + 1;
 	}
 
-	/* board-specific fixups */
-	pcibios_fixup_irqs();
+	pci_fixup_irqs(simple_swizzle, pcibios_map_platform_irq);
 
 	return 0;
 }
-
 subsys_initcall(pcibios_init);
 
+/*
+ *  Called after each bus is probed, but before its children
+ *  are examined.
+ */
+void __init pcibios_fixup_bus(struct pci_bus *bus)
+{
+	pci_read_bridge_bases(bus);
+}
+
 void
 pcibios_update_resource(struct pci_dev *dev, struct resource *root,
 			struct resource *res, int resource)
@@ -192,11 +219,10 @@ void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
 
 	return NULL;
 }
+EXPORT_SYMBOL(pci_iomap);
 
 void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
 {
 	iounmap(addr);
 }
-
-EXPORT_SYMBOL(pci_iomap);
 EXPORT_SYMBOL(pci_iounmap);