sh: Get the SH-5 PCI support building.

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

8 files changed, 275 insertions, 384 deletions

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index c0797b4aadbb..1ad3ce540021 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -512,6 +512,7 @@ config SH_SIMULATOR
 config SH_CAYMAN
         bool "Hitachi Cayman"
         depends on CPU_SUBTYPE_SH5_101 || CPU_SUBTYPE_SH5_103
+        select SYS_SUPPORTS_PCI
 
 config SH_HARP
         bool "ST50 Harp"
diff --git a/arch/sh/drivers/pci/Makefile b/arch/sh/drivers/pci/Makefile
index fba6b5ba0b3a..172e81db9530 100644
--- a/arch/sh/drivers/pci/Makefile
+++ b/arch/sh/drivers/pci/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_CPU_SUBTYPE_SH7751)	+= pci-sh7751.o ops-sh4.o
 obj-$(CONFIG_CPU_SUBTYPE_SH7751R)       += pci-sh7751.o ops-sh4.o
 obj-$(CONFIG_CPU_SUBTYPE_SH7780)        += pci-sh7780.o ops-sh4.o
 obj-$(CONFIG_CPU_SUBTYPE_SH7785)        += pci-sh7780.o ops-sh4.o
+obj-$(CONFIG_CPU_SH5)                   += pci-sh5.o ops-sh5.o
 
 obj-$(CONFIG_SH_DREAMCAST)              += ops-dreamcast.o fixups-dreamcast.o \
                                            dma-dreamcast.o
@@ -20,3 +21,4 @@ obj-$(CONFIG_SH_TITAN)			+= ops-titan.o
 obj-$(CONFIG_SH_LANDISK)                += ops-landisk.o
 obj-$(CONFIG_SH_LBOX_RE2)               += ops-lboxre2.o fixups-lboxre2.o
 obj-$(CONFIG_SH_7780_SOLUTION_ENGINE)   += ops-se7780.o fixups-se7780.o
+obj-$(CONFIG_SH_CAYMAN)                 += ops-cayman.o
diff --git a/arch/sh/drivers/pci/ops-cayman.c b/arch/sh/drivers/pci/ops-cayman.c
new file mode 100644
index 000000000000..980275ffa30b
--- /dev/null
+++ b/arch/sh/drivers/pci/ops-cayman.c
@@ -0,0 +1,94 @@
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/types.h>
+#include <asm/cpu/irq.h>
+#include "pci-sh5.h"
+
+static inline u8 bridge_swizzle(u8 pin, u8 slot)
+{
+        return (((pin - 1) + slot) % 4) + 1;
+}
+
+int __init pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+        int result = -1;
+
+        /* The complication here is that the PCI IRQ lines from the Cayman's 2
+           5V slots get into the CPU via a different path from the IRQ lines
+           from the 3 3.3V slots.  Thus, we have to detect whether the card's
+           interrupts go via the 5V or 3.3V path, i.e. the 'bridge swizzling'
+           at the point where we cross from 5V to 3.3V is not the normal case.
+
+           The added complication is that we don't know that the 5V slots are
+           always bus 2, because a card containing a PCI-PCI bridge may be
+           plugged into a 3.3V slot, and this changes the bus numbering.
+
+           Also, the Cayman has an intermediate PCI bus that goes a custom
+           expansion board header (and to the secondary bridge).  This bus has
+           never been used in practice.
+
+           The 1ary onboard PCI-PCI bridge is device 3 on bus 0
+           The 2ary onboard PCI-PCI bridge is device 0 on the 2ary bus of
+           the 1ary bridge.
+           */
+
+        struct slot_pin {
+                int slot;
+                int pin;
+        } path[4];
+        int i=0;
+
+        while (dev->bus->number > 0) {
+
+                slot = path[i].slot = PCI_SLOT(dev->devfn);
+                pin = path[i].pin = bridge_swizzle(pin, slot);
+                dev = dev->bus->self;
+                i++;
+                if (i > 3) panic("PCI path to root bus too long!\n");
+        }
+
+        slot = PCI_SLOT(dev->devfn);
+        /* This is the slot on bus 0 through which the device is eventually
+           reachable. */
+
+        /* Now work back up. */
+        if ((slot < 3) || (i == 0)) {
+                /* Bus 0 (incl. PCI-PCI bridge itself) : perform the final
+                   swizzle now. */
+                result = IRQ_INTA + bridge_swizzle(pin, slot) - 1;
+        } else {
+                i--;
+                slot = path[i].slot;
+                pin  = path[i].pin;
+                if (slot > 0) {
+                        panic("PCI expansion bus device found - not handled!\n");
+                } else {
+                        if (i > 0) {
+                                /* 5V slots */
+                                i--;
+                                slot = path[i].slot;
+                                pin  = path[i].pin;
+                                /* 'pin' was swizzled earlier wrt slot, don't do it again. */
+                                result = IRQ_P2INTA + (pin - 1);
+                        } else {
+                                /* IRQ for 2ary PCI-PCI bridge : unused */
+                                result = -1;
+                        }
+                }
+        }
+
+        return result;
+}
+
+struct pci_channel board_pci_channels[] = {
+        { &sh5_pci_ops, NULL, NULL, 0, 0xff },
+        { NULL, NULL, NULL, 0, 0 },
+};
+EXPORT_SYMBOL(board_pci_channels);
+
+int __init pcibios_init_platform(void)
+{
+        return sh5pci_init(__pa(memory_start),
+                           __pa(memory_end) - __pa(memory_start));
+}
diff --git a/arch/sh/drivers/pci/ops-sh5.c b/arch/sh/drivers/pci/ops-sh5.c
new file mode 100644
index 000000000000..729e38a6fe07
--- /dev/null
+++ b/arch/sh/drivers/pci/ops-sh5.c
@@ -0,0 +1,93 @@
+/*
+ * Support functions for the SH5 PCI hardware.
+ *
+ * Copyright (C) 2001 David J. Mckay (david.mckay@st.com)
+ * Copyright (C) 2003, 2004 Paul Mundt
+ * Copyright (C) 2004 Richard Curnow
+ *
+ * May be copied or modified under the terms of the GNU General Public
+ * License.  See linux/COPYING for more information.
+ */
+#include <linux/kernel.h>
+#include <linux/rwsem.h>
+#include <linux/smp.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/types.h>
+#include <linux/irq.h>
+#include <asm/pci.h>
+#include <asm/io.h>
+#include "pci-sh5.h"
+
+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;
+        printk("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 * __devinit pcibios_setup(char *str)
+{
+        return str;
+}
+
+static int sh5pci_read(struct pci_bus *bus, unsigned int devfn, int where,
+                        int size, u32 *val)
+{
+        SH5PCI_WRITE(PAR, CONFIG_CMD(bus, devfn, where));
+
+        switch (size) {
+                case 1:
+                        *val = (u8)SH5PCI_READ_BYTE(PDR + (where & 3));
+                        break;
+                case 2:
+                        *val = (u16)SH5PCI_READ_SHORT(PDR + (where & 2));
+                        break;
+                case 4:
+                        *val = SH5PCI_READ(PDR);
+                        break;
+        }
+
+        return PCIBIOS_SUCCESSFUL;
+}
+
+static int sh5pci_write(struct pci_bus *bus, unsigned int devfn, int where,
+                         int size, u32 val)
+{
+        SH5PCI_WRITE(PAR, CONFIG_CMD(bus, devfn, where));
+
+        switch (size) {
+                case 1:
+                        SH5PCI_WRITE_BYTE(PDR + (where & 3), (u8)val);
+                        break;
+                case 2:
+                        SH5PCI_WRITE_SHORT(PDR + (where & 2), (u16)val);
+                        break;
+                case 4:
+                        SH5PCI_WRITE(PDR, val);
+                        break;
+        }
+
+        return PCIBIOS_SUCCESSFUL;
+}
+
+struct pci_ops sh5_pci_ops = {
+        .read           = sh5pci_read,
+        .write          = sh5pci_write,
+};
diff --git a/arch/sh/drivers/pci/pci-sh5.c b/arch/sh/drivers/pci/pci-sh5.c
index b4d9534d2b0e..a00a4df8c02d 100644
--- a/arch/sh/drivers/pci/pci-sh5.c
+++ b/arch/sh/drivers/pci/pci-sh5.c
@@ -18,40 +18,14 @@
 #include <linux/pci.h>
 #include <linux/delay.h>
 #include <linux/types.h>
-#include <asm/pci.h>
 #include <linux/irq.h>
-
+#include <asm/cpu/irq.h>
+#include <asm/pci.h>
 #include <asm/io.h>
-#include <asm/hardware.h>
-#include "pci_sh5.h"
-
-static unsigned long pcicr_virt;
-unsigned long pciio_virt;
-
-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;
-        printk("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);
+#include "pci-sh5.h"
 
-char * __devinit pcibios_setup(char *str)
-{
-        return str;
-}
+unsigned long pcicr_virt;
+unsigned long PCI_IO_AREA;
 
 /* Rounds a number UP to the nearest power of two. Used for
  * sizing the PCI window.
@@ -79,31 +53,73 @@ static u32 __init r2p2(u32 num)
         return tmp;
 }
 
-extern unsigned long long memory_start, memory_end;
+static irqreturn_t pcish5_err_irq(int irq, void *dev_id)
+{
+        struct pt_regs *regs = get_irq_regs();
+        unsigned pci_int, pci_air, pci_cir, pci_aint;
+
+        pci_int = SH5PCI_READ(INT);
+        pci_cir = SH5PCI_READ(CIR);
+        pci_air = SH5PCI_READ(AIR);
 
-int __init sh5pci_init(unsigned memStart, unsigned memSize)
+        if (pci_int) {
+                printk("PCI INTERRUPT (at %08llx)!\n", regs->pc);
+                printk("PCI INT -> 0x%x\n", pci_int & 0xffff);
+                printk("PCI AIR -> 0x%x\n", pci_air);
+                printk("PCI CIR -> 0x%x\n", pci_cir);
+                SH5PCI_WRITE(INT, ~0);
+        }
+
+        pci_aint = SH5PCI_READ(AINT);
+        if (pci_aint) {
+                printk("PCI ARB INTERRUPT!\n");
+                printk("PCI AINT -> 0x%x\n", pci_aint);
+                printk("PCI AIR -> 0x%x\n", pci_air);
+                printk("PCI CIR -> 0x%x\n", pci_cir);
+                SH5PCI_WRITE(AINT, ~0);
+        }
+
+        return IRQ_HANDLED;
+}
+
+static irqreturn_t pcish5_serr_irq(int irq, void *dev_id)
+{
+        printk("SERR IRQ\n");
+
+        return IRQ_NONE;
+}
+
+int __init sh5pci_init(unsigned long memStart, unsigned long memSize)
 {
         u32 lsr0;
         u32 uval;
 
+        if (request_irq(IRQ_ERR, pcish5_err_irq,
+                        IRQF_DISABLED, "PCI Error",NULL) < 0) {
+                printk(KERN_ERR "PCISH5: Cannot hook PCI_PERR interrupt\n");
+                return -EINVAL;
+        }
+
+        if (request_irq(IRQ_SERR, pcish5_serr_irq,
+                        IRQF_DISABLED, "PCI SERR interrupt", NULL) < 0) {
+                printk(KERN_ERR "PCISH5: Cannot hook PCI_SERR interrupt\n");
+                return -EINVAL;
+        }
+
         pcicr_virt = onchip_remap(SH5PCI_ICR_BASE, 1024, "PCICR");
         if (!pcicr_virt) {
                 panic("Unable to remap PCICR\n");
         }
 
-        pciio_virt = onchip_remap(SH5PCI_IO_BASE, 0x10000, "PCIIO");
-        if (!pciio_virt) {
+        PCI_IO_AREA = onchip_remap(SH5PCI_IO_BASE, 0x10000, "PCIIO");
+        if (!PCI_IO_AREA) {
                 panic("Unable to remap PCIIO\n");
         }
 
-        pr_debug("Register base addres is 0x%08lx\n", pcicr_virt);
-
         /* Clear snoop registers */
         SH5PCI_WRITE(CSCR0, 0);
         SH5PCI_WRITE(CSCR1, 0);
 
-        pr_debug("Wrote to reg\n");
-
         /* Switch off interrupts */
         SH5PCI_WRITE(INTM,  0);
         SH5PCI_WRITE(AINTM, 0);
@@ -113,16 +129,17 @@ int __init sh5pci_init(unsigned memStart, unsigned memSize)
         uval = SH5PCI_READ(CR);
 
         /* Set command Register */
-        SH5PCI_WRITE(CR, uval | CR_LOCK_MASK | CR_CFINT| CR_FTO | CR_PFE | CR_PFCS | CR_BMAM);
+        SH5PCI_WRITE(CR, uval | CR_LOCK_MASK | CR_CFINT| CR_FTO | CR_PFE |
+                     CR_PFCS | CR_BMAM);
 
         uval=SH5PCI_READ(CR);
-        pr_debug("CR is actually 0x%08x\n",uval);
 
         /* Allow it to be a master */
         /* NB - WE DISABLE I/O ACCESS to stop overlap */
         /* set WAIT bit to enable stepping, an attempt to improve stability */
         SH5PCI_WRITE_SHORT(CSR_CMD,
-                            PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_WAIT);
+                            PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER |
+                            PCI_COMMAND_WAIT);
 
         /*
         ** Set translation mapping memory in order to convert the address
@@ -143,32 +160,30 @@ int __init sh5pci_init(unsigned memStart, unsigned memSize)
 
         SH5PCI_WRITE(IOBR,0x0);
 
-        pr_debug("PCI:Writing 0x%08x to IOBR\n",0);
-
         /* Set up a 256K window. Totally pointless waste  of address space */
         SH5PCI_WRITE(IOBMR,0);
-        pr_debug("PCI:Writing 0x%08x to IOBMR\n",0);
 
-        /* The SH5 has a HUGE 256K I/O region, which breaks the PCI spec. Ideally,
-         * we would want to map the I/O region somewhere, but it is so big this is not
-         * that easy!
+        /* The SH5 has a HUGE 256K I/O region, which breaks the PCI spec.
+         * Ideally, we would want to map the I/O region somewhere, but it
+         * is so big this is not that easy!
          */
         SH5PCI_WRITE(CSR_IBAR0,~0);
         /* Set memory size value */
         memSize = memory_end - memory_start;
 
-        /* Now we set up the mbars so the PCI bus can see the memory of the machine */
-        if (memSize < (1024 * 1024)) {
-                printk(KERN_ERR "PCISH5: Ridiculous memory size of 0x%x?\n", memSize);
+        /* Now we set up the mbars so the PCI bus can see the memory of
+         * the machine */
+        if (memSize < (1024 * 1024)) {
+                printk(KERN_ERR "PCISH5: Ridiculous memory size of 0x%lx?\n",
+                       memSize);
                 return -EINVAL;
         }
 
         /* Set LSR 0 */
-        lsr0 = (memSize > (512 * 1024 * 1024)) ? 0x1ff00001 : ((r2p2(memSize) - 0x100000) | 0x1);
+        lsr0 = (memSize > (512 * 1024 * 1024)) ? 0x1ff00001 :
+                ((r2p2(memSize) - 0x100000) | 0x1);
         SH5PCI_WRITE(LSR0, lsr0);
 
-        pr_debug("PCI:Writing 0x%08x to LSR0\n",lsr0);
-
         /* Set MBAR 0 */
         SH5PCI_WRITE(CSR_MBAR0, memory_start);
         SH5PCI_WRITE(LAR0, memory_start);
@@ -177,334 +192,21 @@ int __init sh5pci_init(unsigned memStart, unsigned memSize)
         SH5PCI_WRITE(LAR1,0);
         SH5PCI_WRITE(LSR1,0);
 
-        pr_debug("PCI:Writing 0x%08llx to CSR_MBAR0\n",memory_start);
-        pr_debug("PCI:Writing 0x%08llx to LAR0\n",memory_start);
-
         /* Enable the PCI interrupts on the device */
         SH5PCI_WRITE(INTM,  ~0);
         SH5PCI_WRITE(AINTM, ~0);
         SH5PCI_WRITE(PINTM, ~0);
 
-        pr_debug("Switching on all error interrupts\n");
-
-        return(0);
-}
-
-static int sh5pci_read(struct pci_bus *bus, unsigned int devfn, int where,
-                        int size, u32 *val)
-{
-        SH5PCI_WRITE(PAR, CONFIG_CMD(bus, devfn, where));
-
-        switch (size) {
-                case 1:
-                        *val = (u8)SH5PCI_READ_BYTE(PDR + (where & 3));
-                        break;
-                case 2:
-                        *val = (u16)SH5PCI_READ_SHORT(PDR + (where & 2));
-                        break;
-                case 4:
-                        *val = SH5PCI_READ(PDR);
-                        break;
-        }
-
-        return PCIBIOS_SUCCESSFUL;
-}
-
-static int sh5pci_write(struct pci_bus *bus, unsigned int devfn, int where,
-                         int size, u32 val)
-{
-        SH5PCI_WRITE(PAR, CONFIG_CMD(bus, devfn, where));
-
-        switch (size) {
-                case 1:
-                        SH5PCI_WRITE_BYTE(PDR + (where & 3), (u8)val);
-                        break;
-                case 2:
-                        SH5PCI_WRITE_SHORT(PDR + (where & 2), (u16)val);
-                        break;
-                case 4:
-                        SH5PCI_WRITE(PDR, val);
-                        break;
-        }
-
-        return PCIBIOS_SUCCESSFUL;
-}
-
-static struct pci_ops pci_config_ops = {
-        .read =         sh5pci_read,
-        .write =        sh5pci_write,
-};
-
-/* Everything hangs off this */
-static struct pci_bus *pci_root_bus;
-
-
-static u8 __init no_swizzle(struct pci_dev *dev, u8 * pin)
-{
-        pr_debug("swizzle for dev %d on bus %d slot %d pin is %d\n",
-                 dev->devfn,dev->bus->number, PCI_SLOT(dev->devfn),*pin);
-        return PCI_SLOT(dev->devfn);
-}
-
-static inline u8 bridge_swizzle(u8 pin, u8 slot)
-{
-        return (((pin-1) + slot) % 4) + 1;
-}
-
-u8 __init common_swizzle(struct pci_dev *dev, u8 *pinp)
-{
-        if (dev->bus->number != 0) {
-                u8 pin = *pinp;
-                do {
-                        pin = bridge_swizzle(pin, PCI_SLOT(dev->devfn));
-                        /* Move up the chain of bridges. */
-                        dev = dev->bus->self;
-                } while (dev->bus->self);
-                *pinp = pin;
-
-                /* The slot is the slot of the last bridge. */
-        }
-
-        return PCI_SLOT(dev->devfn);
-}
-
-/* This needs to be shunted out of here into the board specific bit */
-
-static int __init map_cayman_irq(struct pci_dev *dev, u8 slot, u8 pin)
-{
-        int result = -1;
-
-        /* The complication here is that the PCI IRQ lines from the Cayman's 2
-           5V slots get into the CPU via a different path from the IRQ lines
-           from the 3 3.3V slots.  Thus, we have to detect whether the card's
-           interrupts go via the 5V or 3.3V path, i.e. the 'bridge swizzling'
-           at the point where we cross from 5V to 3.3V is not the normal case.
-
-           The added complication is that we don't know that the 5V slots are
-           always bus 2, because a card containing a PCI-PCI bridge may be
-           plugged into a 3.3V slot, and this changes the bus numbering.
-
-           Also, the Cayman has an intermediate PCI bus that goes a custom
-           expansion board header (and to the secondary bridge).  This bus has
-           never been used in practice.
-
-           The 1ary onboard PCI-PCI bridge is device 3 on bus 0
-           The 2ary onboard PCI-PCI bridge is device 0 on the 2ary bus of the 1ary bridge.
-           */
-
-        struct slot_pin {
-                int slot;
-                int pin;
-        } path[4];
-        int i=0;
-
-        while (dev->bus->number > 0) {
-
-                slot = path[i].slot = PCI_SLOT(dev->devfn);
-                pin = path[i].pin = bridge_swizzle(pin, slot);
-                dev = dev->bus->self;
-                i++;
-                if (i > 3) panic("PCI path to root bus too long!\n");
-        }
-
-        slot = PCI_SLOT(dev->devfn);
-        /* This is the slot on bus 0 through which the device is eventually
-           reachable. */
-
-        /* Now work back up. */
-        if ((slot < 3) || (i == 0)) {
-                /* Bus 0 (incl. PCI-PCI bridge itself) : perform the final
-                   swizzle now. */
-                result = IRQ_INTA + bridge_swizzle(pin, slot) - 1;
-        } else {
-                i--;
-                slot = path[i].slot;
-                pin  = path[i].pin;
-                if (slot > 0) {
-                        panic("PCI expansion bus device found - not handled!\n");
-                } else {
-                        if (i > 0) {
-                                /* 5V slots */
-                                i--;
-                                slot = path[i].slot;
-                                pin  = path[i].pin;
-                                /* 'pin' was swizzled earlier wrt slot, don't do it again. */
-                                result = IRQ_P2INTA + (pin - 1);
-                        } else {
-                                /* IRQ for 2ary PCI-PCI bridge : unused */
-                                result = -1;
-                        }
-                }
-        }
-
-        return result;
-}
-
-static irqreturn_t pcish5_err_irq(int irq, void *dev_id)
-{
-        struct pt_regs *regs = get_irq_regs();
-        unsigned pci_int, pci_air, pci_cir, pci_aint;
-
-        pci_int = SH5PCI_READ(INT);
-        pci_cir = SH5PCI_READ(CIR);
-        pci_air = SH5PCI_READ(AIR);
-
-        if (pci_int) {
-                printk("PCI INTERRUPT (at %08llx)!\n", regs->pc);
-                printk("PCI INT -> 0x%x\n", pci_int & 0xffff);
-                printk("PCI AIR -> 0x%x\n", pci_air);
-                printk("PCI CIR -> 0x%x\n", pci_cir);
-                SH5PCI_WRITE(INT, ~0);
-        }
-
-        pci_aint = SH5PCI_READ(AINT);
-        if (pci_aint) {
-                printk("PCI ARB INTERRUPT!\n");
-                printk("PCI AINT -> 0x%x\n", pci_aint);
-                printk("PCI AIR -> 0x%x\n", pci_air);
-                printk("PCI CIR -> 0x%x\n", pci_cir);
-                SH5PCI_WRITE(AINT, ~0);
-        }
-
-        return IRQ_HANDLED;
-}
-
-static irqreturn_t pcish5_serr_irq(int irq, void *dev_id)
-{
-        printk("SERR IRQ\n");
-
-        return IRQ_NONE;
-}
-
-static void __init
-pcibios_size_bridge(struct pci_bus *bus, struct resource *ior,
-                    struct resource *memr)
-{
-        struct resource io_res, mem_res;
-        struct pci_dev *dev;
-        struct pci_dev *bridge = bus->self;
-        struct list_head *ln;
-
-        if (!bridge)
-                return; /* host bridge, nothing to do */
-
-        /* set reasonable default locations for pcibios_align_resource */
-        io_res.start = PCIBIOS_MIN_IO;
-        mem_res.start = PCIBIOS_MIN_MEM;
-
-        io_res.end = io_res.start;
-        mem_res.end = mem_res.start;
-
-        /* Collect information about how our direct children are layed out. */
-        for (ln=bus->devices.next; ln != &bus->devices; ln=ln->next) {
-                int i;
-                dev = pci_dev_b(ln);
-
-                /* Skip bridges for now */
-                if (dev->class >> 8 == PCI_CLASS_BRIDGE_PCI)
-                        continue;
-
-                for (i = 0; i < PCI_NUM_RESOURCES; i++) {
-                        struct resource res;
-                        unsigned long size;
-
-                        memcpy(&res, &dev->resource[i], sizeof(res));
-                        size = res.end - res.start + 1;
-
-                        if (res.flags & IORESOURCE_IO) {
-                                res.start = io_res.end;
-                                pcibios_align_resource(dev, &res, size, 0);
-                                io_res.end = res.start + size;
-                        } else if (res.flags & IORESOURCE_MEM) {
-                                res.start = mem_res.end;
-                                pcibios_align_resource(dev, &res, size, 0);
-                                mem_res.end = res.start + size;
-                        }
-                }
-        }
-
-        /* And for all of the subordinate busses. */
-        for (ln=bus->children.next; ln != &bus->children; ln=ln->next)
-                pcibios_size_bridge(pci_bus_b(ln), &io_res, &mem_res);
-
-        /* turn the ending locations into sizes (subtract start) */
-        io_res.end -= io_res.start;
-        mem_res.end -= mem_res.start;
-
-        /* Align the sizes up by bridge rules */
-        io_res.end = ALIGN(io_res.end, 4*1024) - 1;
-        mem_res.end = ALIGN(mem_res.end, 1*1024*1024) - 1;
-
-        /* Adjust the bridge's allocation requirements */
-        bridge->resource[0].end = bridge->resource[0].start + io_res.end;
-        bridge->resource[1].end = bridge->resource[1].start + mem_res.end;
-
-        bridge->resource[PCI_BRIDGE_RESOURCES].end =
-            bridge->resource[PCI_BRIDGE_RESOURCES].start + io_res.end;
-        bridge->resource[PCI_BRIDGE_RESOURCES+1].end =
-            bridge->resource[PCI_BRIDGE_RESOURCES+1].start + mem_res.end;
-
-        /* adjust parent's resource requirements */
-        if (ior) {
-                ior->end = ALIGN(ior->end, 4*1024);
-                ior->end += io_res.end;
-        }
-
-        if (memr) {
-                memr->end = ALIGN(memr->end, 1*1024*1024);
-                memr->end += mem_res.end;
-        }
-}
-
-static void __init pcibios_size_bridges(void)
-{
-        struct resource io_res, mem_res;
-
-        memset(&io_res, 0, sizeof(io_res));
-        memset(&mem_res, 0, sizeof(mem_res));
-
-        pcibios_size_bridge(pci_root_bus, &io_res, &mem_res);
-}
-
-static int __init pcibios_init(void)
-{
-        if (request_irq(IRQ_ERR, pcish5_err_irq,
-                        IRQF_DISABLED, "PCI Error",NULL) < 0) {
-                printk(KERN_ERR "PCISH5: Cannot hook PCI_PERR interrupt\n");
-                return -EINVAL;
-        }
-
-        if (request_irq(IRQ_SERR, pcish5_serr_irq,
-                        IRQF_DISABLED, "PCI SERR interrupt", NULL) < 0) {
-                printk(KERN_ERR "PCISH5: Cannot hook PCI_SERR interrupt\n");
-                return -EINVAL;
-        }
-
-        /* The pci subsystem needs to know where memory is and how much
-         * of it there is. I've simply made these globals. A better mechanism
-         * is probably needed.
-         */
-        sh5pci_init(__pa(memory_start),
-                     __pa(memory_end) - __pa(memory_start));
-
-        pci_root_bus = pci_scan_bus(0, &pci_config_ops, NULL);
-        pcibios_size_bridges();
-        pci_assign_unassigned_resources();
-        pci_fixup_irqs(no_swizzle, map_cayman_irq);
-
         return 0;
 }
 
-subsys_initcall(pcibios_init);
-
 void __devinit pcibios_fixup_bus(struct pci_bus *bus)
 {
         struct pci_dev *dev = bus->self;
         int i;
 
-#if 1
-        if(dev) {
-                for(i=0; i<3; i++) {
+        if (dev) {
+                for (i= 0; i < 3; i++) {
                         bus->resource[i] =
                                 &dev->resource[PCI_BRIDGE_RESOURCES+i];
                         bus->resource[i]->name = bus->name;
@@ -514,23 +216,13 @@ void __devinit pcibios_fixup_bus(struct pci_bus *bus)
 
                 /* For now, propagate host limits to the bus;
                  * we'll adjust them later. */
-
-#if 1
                 bus->resource[0]->end = 64*1024 - 1 ;
                 bus->resource[1]->end = PCIBIOS_MIN_MEM+(256*1024*1024)-1;
                 bus->resource[0]->start = PCIBIOS_MIN_IO;
                 bus->resource[1]->start = PCIBIOS_MIN_MEM;
-#else
-                bus->resource[0]->end = 0;
-                bus->resource[1]->end = 0;
-                bus->resource[0]->start =0;
-                bus->resource[1]->start = 0;
-#endif
+
                 /* Turn off downstream PF memory address range by default */
                 bus->resource[2]->start = 1024*1024;
                 bus->resource[2]->end = bus->resource[2]->start - 1;
         }
-#endif
-
 }
-
diff --git a/arch/sh/drivers/pci/pci-sh5.h b/arch/sh/drivers/pci/pci-sh5.h
index c71159dd04b9..7cff3fc04d30 100644
--- a/arch/sh/drivers/pci/pci-sh5.h
+++ b/arch/sh/drivers/pci/pci-sh5.h
@@ -6,6 +6,8 @@
  *
  * Definitions for the SH5 PCI hardware.
  */
+#ifndef __PCI_SH5_H
+#define __PCI_SH5_H
 
 /* Product ID */
 #define PCISH5_PID              0x350d
@@ -73,13 +75,12 @@
 #define PCISH5_ICR_CSR_MBAR0   0x014   /* First  Memory base address register */
 #define PCISH5_ICR_CSR_MBAR1   0x018   /* Second Memory base address register */
 
-
-
 /* Base address of registers */
 #define SH5PCI_ICR_BASE (PHYS_PCI_BLOCK + 0x00040000)
 #define SH5PCI_IO_BASE  (PHYS_PCI_BLOCK + 0x00800000)
 /* #define SH5PCI_VCR_BASE (P2SEG_PCICB_BLOCK + P2SEG)    */
 
+extern unsigned long pcicr_virt;
 /* Register selection macro */
 #define PCISH5_ICR_REG(x)                ( pcicr_virt + (PCISH5_ICR_##x))
 /* #define PCISH5_VCR_REG(x)                ( SH5PCI_VCR_BASE (PCISH5_VCR_##x)) */
@@ -104,4 +105,9 @@
 #define PCISH5_MEM_SIZCONV(x)             (((x / 0x40000) - 1) << 18)
 #define PCISH5_IO_SIZCONV(x)              (((x / 0x40000) - 1) << 18)
 
+extern struct pci_ops sh5_pci_ops;
+
+/* arch/sh/drivers/pci/pci-sh5.c */
+int sh5pci_init(unsigned long memStart, unsigned long memSize);
 
+#endif /* __PCI_SH5_H */
diff --git a/arch/sh/drivers/pci/pci.c b/arch/sh/drivers/pci/pci.c
index ccaba368ac9b..49b435c3a57a 100644
--- a/arch/sh/drivers/pci/pci.c
+++ b/arch/sh/drivers/pci/pci.c
@@ -71,7 +71,7 @@ subsys_initcall(pcibios_init);
  *  Called after each bus is probed, but before its children
  *  are examined.
  */
-void __devinit pcibios_fixup_bus(struct pci_bus *bus)
+void __devinit __weak pcibios_fixup_bus(struct pci_bus *bus)
 {
         pci_read_bridge_bases(bus);
 }
diff --git a/include/asm-sh/pci.h b/include/asm-sh/pci.h
index 2757ce096ff7..df1d383e18a5 100644
--- a/include/asm-sh/pci.h
+++ b/include/asm-sh/pci.h
@@ -38,9 +38,12 @@ extern struct pci_channel board_pci_channels[];
 #if defined(CONFIG_CPU_SUBTYPE_SH7780) || defined(CONFIG_CPU_SUBTYPE_SH7785)
 #define PCI_IO_AREA             0xFE400000
 #define PCI_IO_SIZE             0x00400000
+#elif defined(CONFIG_CPU_SH5)
+extern unsigned long PCI_IO_AREA;
+#define PCI_IO_SIZE             0x00010000
 #else
 #define PCI_IO_AREA             0xFE240000
-#define PCI_IO_SIZE             0X00040000
+#define PCI_IO_SIZE             0x00040000
 #endif
 
 #define PCI_MEM_SIZE            0x01000000