diff --git a/Makefile.target b/Makefile.target
index 1f4518c..2da39b7 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -186,11 +186,11 @@ obj-i386-y += fdc.o mc146818rtc.o serial.o i8259.o i8254.o pcspk.o pc.o
 obj-i386-y += cirrus_vga.o apic.o ioapic.o parallel.o acpi.o piix_pci.o
 obj-i386-y += usb-uhci.o vmmouse.o vmport.o vmware_vga.o hpet.o
 obj-i386-y += device-hotplug.o pci-hotplug.o smbios.o wdt_ib700.o
-obj-i386-y += ne2000-isa.o
+obj-i386-y += ne2000-isa.o pci_host.o
 
 # shared objects
 obj-ppc-y = ppc.o ide/core.o ide/qdev.o ide/isa.o ide/pci.o ide/macio.o
-obj-ppc-y += vga.o vga-pci.o $(sound-obj-y) dma.o openpic.o
+obj-ppc-y += vga.o vga-pci.o $(sound-obj-y) dma.o openpic.o pci_host.o
 # PREP target
 obj-ppc-y += pckbd.o serial.o i8259.o i8254.o fdc.o mc146818rtc.o
 obj-ppc-y += prep_pci.o ppc_prep.o ne2000-isa.o
@@ -217,7 +217,7 @@ obj-mips-y += gt64xxx.o pckbd.o fdc.o mc146818rtc.o usb-uhci.o acpi.o ds1225y.o
 obj-mips-y += piix4.o parallel.o cirrus_vga.o pcspk.o $(sound-obj-y)
 obj-mips-y += mipsnet.o ne2000-isa.o
 obj-mips-y += pflash_cfi01.o
-obj-mips-y += vmware_vga.o
+obj-mips-y += vmware_vga.o pci_host.o
 
 obj-microblaze-y = petalogix_s3adsp1800_mmu.o
 
@@ -244,7 +244,7 @@ obj-cris-y += etraxfs_ser.o
 obj-cris-y += pflash_cfi02.o
 
 ifeq ($(TARGET_ARCH), sparc64)
-obj-sparc-y = sun4u.o pckbd.o apb_pci.o
+obj-sparc-y = sun4u.o pckbd.o apb_pci.o pci_host.o
 obj-sparc-y += ide/core.o ide/qdev.o ide/pci.o
 obj-sparc-y += vga.o vga-pci.o
 obj-sparc-y += fdc.o mc146818rtc.o serial.o
diff --git a/hw/apb_pci.c b/hw/apb_pci.c
index 599e354..00165e5 100644
--- a/hw/apb_pci.c
+++ b/hw/apb_pci.c
@@ -28,6 +28,7 @@
 
 #include "sysbus.h"
 #include "pci.h"
+#include "pci_host.h"
 
 /* debug APB */
 //#define DEBUG_APB
@@ -39,9 +40,6 @@ do { printf("APB: " fmt , ## __VA_ARGS__); } while (0)
 #define APB_DPRINTF(fmt, ...)
 #endif
 
-typedef target_phys_addr_t pci_addr_t;
-#include "pci_host.h"
-
 typedef struct APBState {
     SysBusDevice busdev;
     PCIHostState host_state;
@@ -136,18 +134,6 @@ static CPUReadMemoryFunc * const apb_config_read[] = {
     &apb_config_readl,
 };
 
-static CPUWriteMemoryFunc * const pci_apb_write[] = {
-    &pci_host_data_writeb,
-    &pci_host_data_writew,
-    &pci_host_data_writel,
-};
-
-static CPUReadMemoryFunc * const pci_apb_read[] = {
-    &pci_host_data_readb,
-    &pci_host_data_readw,
-    &pci_host_data_readl,
-};
-
 static void pci_apb_iowriteb (void *opaque, target_phys_addr_t addr,
                                   uint32_t val)
 {
@@ -282,8 +268,9 @@ static int pci_pbm_init_device(SysBusDevice *dev)
                                             pci_apb_config_write, s);
     sysbus_init_mmio(dev, 0x10ULL, pci_mem_config);
     /* mem_data */
-    pci_mem_data = cpu_register_io_memory(pci_apb_read,
-                                          pci_apb_write, &s->host_state);
+    pci_mem_data = cpu_register_io_memory(pci_host_data_read_mmio,
+                                          pci_host_data_write_mmio,
+                                          &s->host_state);
     sysbus_init_mmio(dev, 0x10000000ULL, pci_mem_data);
     return 0;
 }
diff --git a/hw/grackle_pci.c b/hw/grackle_pci.c
index d878cf6..d29175b 100644
--- a/hw/grackle_pci.c
+++ b/hw/grackle_pci.c
@@ -26,6 +26,7 @@
 #include "sysbus.h"
 #include "ppc_mac.h"
 #include "pci.h"
+#include "pci_host.h"
 
 /* debug Grackle */
 //#define DEBUG_GRACKLE
@@ -37,9 +38,6 @@
 #define GRACKLE_DPRINTF(fmt, ...)
 #endif
 
-typedef target_phys_addr_t pci_addr_t;
-#include "pci_host.h"
-
 typedef struct GrackleState {
     SysBusDevice busdev;
     PCIHostState host_state;
@@ -84,18 +82,6 @@ static CPUReadMemoryFunc * const pci_grackle_config_read[] = {
     &pci_grackle_config_readl,
 };
 
-static CPUWriteMemoryFunc * const pci_grackle_write[] = {
-    &pci_host_data_writeb,
-    &pci_host_data_writew,
-    &pci_host_data_writel,
-};
-
-static CPUReadMemoryFunc * const pci_grackle_read[] = {
-    &pci_host_data_readb,
-    &pci_host_data_readw,
-    &pci_host_data_readl,
-};
-
 /* Don't know if this matches real hardware, but it agrees with OHW.  */
 static int pci_grackle_map_irq(PCIDevice *pci_dev, int irq_num)
 {
@@ -163,8 +149,8 @@ static int pci_grackle_init_device(SysBusDevice *dev)
 
     pci_mem_config = cpu_register_io_memory(pci_grackle_config_read,
                                             pci_grackle_config_write, s);
-    pci_mem_data = cpu_register_io_memory(pci_grackle_read,
-                                          pci_grackle_write,
+    pci_mem_data = cpu_register_io_memory(pci_host_data_read_mmio,
+                                          pci_host_data_write_mmio,
                                           &s->host_state);
     sysbus_init_mmio(dev, 0x1000, pci_mem_config);
     sysbus_init_mmio(dev, 0x1000, pci_mem_data);
@@ -185,8 +171,8 @@ static int pci_dec_21154_init_device(SysBusDevice *dev)
 
     pci_mem_config = cpu_register_io_memory(pci_grackle_config_read,
                                             pci_grackle_config_write, s);
-    pci_mem_data = cpu_register_io_memory(pci_grackle_read,
-                                          pci_grackle_write,
+    pci_mem_data = cpu_register_io_memory(pci_host_data_read_mmio,
+                                          pci_host_data_write_mmio,
                                           &s->host_state);
     sysbus_init_mmio(dev, 0x1000, pci_mem_config);
     sysbus_init_mmio(dev, 0x1000, pci_mem_data);
diff --git a/hw/gt64xxx.c b/hw/gt64xxx.c
index 8f9ae4a..fb7f5bd 100644
--- a/hw/gt64xxx.c
+++ b/hw/gt64xxx.c
@@ -25,10 +25,8 @@
 #include "hw.h"
 #include "mips.h"
 #include "pci.h"
-#include "pc.h"
-
-typedef target_phys_addr_t pci_addr_t;
 #include "pci_host.h"
+#include "pc.h"
 
 //#define DEBUG
 
@@ -1119,13 +1117,6 @@ PCIBus *pci_gt64120_init(qemu_irq *pic)
     GT64120State *s;
     PCIDevice *d;
 
-    (void)&pci_host_data_writeb; /* avoid warning */
-    (void)&pci_host_data_writew; /* avoid warning */
-    (void)&pci_host_data_writel; /* avoid warning */
-    (void)&pci_host_data_readb; /* avoid warning */
-    (void)&pci_host_data_readw; /* avoid warning */
-    (void)&pci_host_data_readl; /* avoid warning */
-
     s = qemu_mallocz(sizeof(GT64120State));
     s->pci = qemu_mallocz(sizeof(GT64120PCIState));
 
diff --git a/hw/pci_host.h b/hw/pci_host.c
similarity index 69%
copy from hw/pci_host.h
copy to hw/pci_host.c
index 48862b5..5c06f03 100644
--- a/hw/pci_host.h
+++ b/hw/pci_host.c
@@ -25,10 +25,13 @@
 /* Worker routines for a PCI host controller that uses an {address,data}
    register pair to access PCI configuration space.  */
 
+#ifndef PCI_HOST_C
+
 /* debug PCI */
 //#define DEBUG_PCI
 
-#include "sysbus.h"
+#include "pci.h"
+#include "pci_host.h"
 
 #ifdef DEBUG_PCI
 #define PCI_DPRINTF(fmt, ...) \
@@ -37,13 +40,40 @@ do { printf("pci_host_data: " fmt , ## __VA_ARGS__); } while (0)
 #define PCI_DPRINTF(fmt, ...)
 #endif
 
-typedef struct {
-    SysBusDevice busdev;
-    uint32_t config_reg;
-    PCIBus *bus;
-} PCIHostState;
+#define PCI_HOST_C
+
+#define PCI_ADDR_T      target_phys_addr_t
+#define PCI_HOST_SUFFIX _mmio
+#define PCI_HOST_STATIC static
+
+#include "pci_host.c"
+
+CPUWriteMemoryFunc * const pci_host_data_write_mmio[] = {
+    &glue(pci_host_data_writeb, PCI_HOST_SUFFIX),
+    &glue(pci_host_data_writew, PCI_HOST_SUFFIX),
+    &glue(pci_host_data_writel, PCI_HOST_SUFFIX),
+};
+
+CPUReadMemoryFunc * const pci_host_data_read_mmio[] = {
+    &glue(pci_host_data_readb, PCI_HOST_SUFFIX),
+    &glue(pci_host_data_readw, PCI_HOST_SUFFIX),
+    &glue(pci_host_data_readl, PCI_HOST_SUFFIX),
+};
+
+#undef PCI_ADDR_T
+#undef PCI_HOST_SUFFIX
+#undef PCI_HOST_STATIC
 
-static void pci_host_data_writeb(void* opaque, pci_addr_t addr, uint32_t val)
+#define PCI_ADDR_T      uint32_t
+#define PCI_HOST_SUFFIX _ioport
+#define PCI_HOST_STATIC /* nothing. export this function */
+
+#include "pci_host.c"
+
+#else
+
+PCI_HOST_STATIC void glue(pci_host_data_writeb, PCI_HOST_SUFFIX)(
+    void* opaque, PCI_ADDR_T addr, uint32_t val)
 {
     PCIHostState *s = opaque;
 
@@ -53,7 +83,8 @@ static void pci_host_data_writeb(void* opaque, pci_addr_t addr, uint32_t val)
         pci_data_write(s->bus, s->config_reg | (addr & 3), val, 1);
 }
 
-static void pci_host_data_writew(void* opaque, pci_addr_t addr, uint32_t val)
+PCI_HOST_STATIC void glue(pci_host_data_writew, PCI_HOST_SUFFIX)(
+    void* opaque, PCI_ADDR_T addr, uint32_t val)
 {
     PCIHostState *s = opaque;
 #ifdef TARGET_WORDS_BIGENDIAN
@@ -65,7 +96,8 @@ static void pci_host_data_writew(void* opaque, pci_addr_t addr, uint32_t val)
         pci_data_write(s->bus, s->config_reg | (addr & 3), val, 2);
 }
 
-static void pci_host_data_writel(void* opaque, pci_addr_t addr, uint32_t val)
+PCI_HOST_STATIC void glue(pci_host_data_writel, PCI_HOST_SUFFIX)(
+    void* opaque, PCI_ADDR_T addr, uint32_t val)
 {
     PCIHostState *s = opaque;
 #ifdef TARGET_WORDS_BIGENDIAN
@@ -77,7 +109,8 @@ static void pci_host_data_writel(void* opaque, pci_addr_t addr, uint32_t val)
         pci_data_write(s->bus, s->config_reg, val, 4);
 }
 
-static uint32_t pci_host_data_readb(void* opaque, pci_addr_t addr)
+PCI_HOST_STATIC uint32_t glue(pci_host_data_readb, PCI_HOST_SUFFIX)(
+    void* opaque, PCI_ADDR_T addr)
 {
     PCIHostState *s = opaque;
     uint32_t val;
@@ -90,7 +123,8 @@ static uint32_t pci_host_data_readb(void* opaque, pci_addr_t addr)
     return val;
 }
 
-static uint32_t pci_host_data_readw(void* opaque, pci_addr_t addr)
+PCI_HOST_STATIC uint32_t glue(pci_host_data_readw, PCI_HOST_SUFFIX)(
+    void* opaque, PCI_ADDR_T addr)
 {
     PCIHostState *s = opaque;
     uint32_t val;
@@ -105,7 +139,8 @@ static uint32_t pci_host_data_readw(void* opaque, pci_addr_t addr)
     return val;
 }
 
-static uint32_t pci_host_data_readl(void* opaque, pci_addr_t addr)
+PCI_HOST_STATIC uint32_t glue(pci_host_data_readl, PCI_HOST_SUFFIX)(
+    void* opaque, PCI_ADDR_T addr)
 {
     PCIHostState *s = opaque;
     uint32_t val;
@@ -119,3 +154,5 @@ static uint32_t pci_host_data_readl(void* opaque, pci_addr_t addr)
 #endif
     return val;
 }
+
+#endif
diff --git a/hw/pci_host.h b/hw/pci_host.h
index 48862b5..ea98ed2 100644
--- a/hw/pci_host.h
+++ b/hw/pci_host.h
@@ -25,97 +25,27 @@
 /* Worker routines for a PCI host controller that uses an {address,data}
    register pair to access PCI configuration space.  */
 
-/* debug PCI */
-//#define DEBUG_PCI
+#ifndef PCI_HOST_H
+#define PCI_HOST_H
 
 #include "sysbus.h"
 
-#ifdef DEBUG_PCI
-#define PCI_DPRINTF(fmt, ...) \
-do { printf("pci_host_data: " fmt , ## __VA_ARGS__); } while (0)
-#else
-#define PCI_DPRINTF(fmt, ...)
-#endif
-
 typedef struct {
     SysBusDevice busdev;
     uint32_t config_reg;
     PCIBus *bus;
 } PCIHostState;
 
-static void pci_host_data_writeb(void* opaque, pci_addr_t addr, uint32_t val)
-{
-    PCIHostState *s = opaque;
-
-    PCI_DPRINTF("writeb addr " TARGET_FMT_plx " val %x\n",
-                (target_phys_addr_t)addr, val);
-    if (s->config_reg & (1u << 31))
-        pci_data_write(s->bus, s->config_reg | (addr & 3), val, 1);
-}
-
-static void pci_host_data_writew(void* opaque, pci_addr_t addr, uint32_t val)
-{
-    PCIHostState *s = opaque;
-#ifdef TARGET_WORDS_BIGENDIAN
-    val = bswap16(val);
-#endif
-    PCI_DPRINTF("writew addr " TARGET_FMT_plx " val %x\n",
-                (target_phys_addr_t)addr, val);
-    if (s->config_reg & (1u << 31))
-        pci_data_write(s->bus, s->config_reg | (addr & 3), val, 2);
-}
-
-static void pci_host_data_writel(void* opaque, pci_addr_t addr, uint32_t val)
-{
-    PCIHostState *s = opaque;
-#ifdef TARGET_WORDS_BIGENDIAN
-    val = bswap32(val);
-#endif
-    PCI_DPRINTF("writel addr " TARGET_FMT_plx " val %x\n",
-                (target_phys_addr_t)addr, val);
-    if (s->config_reg & (1u << 31))
-        pci_data_write(s->bus, s->config_reg, val, 4);
-}
-
-static uint32_t pci_host_data_readb(void* opaque, pci_addr_t addr)
-{
-    PCIHostState *s = opaque;
-    uint32_t val;
-
-    if (!(s->config_reg & (1 << 31)))
-        return 0xff;
-    val = pci_data_read(s->bus, s->config_reg | (addr & 3), 1);
-    PCI_DPRINTF("readb addr " TARGET_FMT_plx " val %x\n",
-                (target_phys_addr_t)addr, val);
-    return val;
-}
+/* for mmio */
+extern CPUWriteMemoryFunc * const pci_host_data_write_mmio[];
+extern CPUReadMemoryFunc * const pci_host_data_read_mmio[];
 
-static uint32_t pci_host_data_readw(void* opaque, pci_addr_t addr)
-{
-    PCIHostState *s = opaque;
-    uint32_t val;
-    if (!(s->config_reg & (1 << 31)))
-        return 0xffff;
-    val = pci_data_read(s->bus, s->config_reg | (addr & 3), 2);
-    PCI_DPRINTF("readw addr " TARGET_FMT_plx " val %x\n",
-                (target_phys_addr_t)addr, val);
-#ifdef TARGET_WORDS_BIGENDIAN
-    val = bswap16(val);
-#endif
-    return val;
-}
+/* for ioio */
+void pci_host_data_writeb_ioport(void* opaque, uint32_t addr, uint32_t val);
+void pci_host_data_writew_ioport(void* opaque, uint32_t addr, uint32_t val);
+void pci_host_data_writel_ioport(void* opaque, uint32_t addr, uint32_t val);
+uint32_t pci_host_data_readb_ioport(void* opaque, uint32_t addr);
+uint32_t pci_host_data_readw_ioport(void* opaque, uint32_t addr);
+uint32_t pci_host_data_readl_ioport(void* opaque, uint32_t addr);
 
-static uint32_t pci_host_data_readl(void* opaque, pci_addr_t addr)
-{
-    PCIHostState *s = opaque;
-    uint32_t val;
-    if (!(s->config_reg & (1 << 31)))
-        return 0xffffffff;
-    val = pci_data_read(s->bus, s->config_reg | (addr & 3), 4);
-    PCI_DPRINTF("readl addr " TARGET_FMT_plx " val %x\n",
-                (target_phys_addr_t)addr, val);
-#ifdef TARGET_WORDS_BIGENDIAN
-    val = bswap32(val);
-#endif
-    return val;
-}
+#endif /* PCI_HOST_H */
diff --git a/hw/piix_pci.c b/hw/piix_pci.c
index edd6df0..c8db791 100644
--- a/hw/piix_pci.c
+++ b/hw/piix_pci.c
@@ -25,12 +25,10 @@
 #include "hw.h"
 #include "pc.h"
 #include "pci.h"
+#include "pci_host.h"
 #include "isa.h"
 #include "sysbus.h"
 
-typedef uint32_t pci_addr_t;
-#include "pci_host.h"
-
 typedef PCIHostState I440FXState;
 
 typedef struct PIIX3State {
@@ -201,12 +199,12 @@ static int i440fx_pcihost_initfn(SysBusDevice *dev)
     register_ioport_write(0xcf8, 4, 4, i440fx_addr_writel, s);
     register_ioport_read(0xcf8, 4, 4, i440fx_addr_readl, s);
 
-    register_ioport_write(0xcfc, 4, 1, pci_host_data_writeb, s);
-    register_ioport_write(0xcfc, 4, 2, pci_host_data_writew, s);
-    register_ioport_write(0xcfc, 4, 4, pci_host_data_writel, s);
-    register_ioport_read(0xcfc, 4, 1, pci_host_data_readb, s);
-    register_ioport_read(0xcfc, 4, 2, pci_host_data_readw, s);
-    register_ioport_read(0xcfc, 4, 4, pci_host_data_readl, s);
+    register_ioport_write(0xcfc, 4, 1, pci_host_data_writeb_ioport, s);
+    register_ioport_write(0xcfc, 4, 2, pci_host_data_writew_ioport, s);
+    register_ioport_write(0xcfc, 4, 4, pci_host_data_writel_ioport, s);
+    register_ioport_read(0xcfc, 4, 1, pci_host_data_readb_ioport, s);
+    register_ioport_read(0xcfc, 4, 2, pci_host_data_readw_ioport, s);
+    register_ioport_read(0xcfc, 4, 4, pci_host_data_readl_ioport, s);
     return 0;
 }
 
diff --git a/hw/ppc4xx_pci.c b/hw/ppc4xx_pci.c
index 655fe86..953e6b6 100644
--- a/hw/ppc4xx_pci.c
+++ b/hw/ppc4xx_pci.c
@@ -22,8 +22,6 @@
 #include "hw.h"
 #include "ppc.h"
 #include "ppc4xx.h"
-
-typedef target_phys_addr_t pci_addr_t;
 #include "pci.h"
 #include "pci_host.h"
 #include "bswap.h"
@@ -117,18 +115,6 @@ static CPUWriteMemoryFunc * const pci4xx_cfgaddr_write[] = {
     &pci4xx_cfgaddr_writel,
 };
 
-static CPUReadMemoryFunc * const pci4xx_cfgdata_read[] = {
-    &pci_host_data_readb,
-    &pci_host_data_readw,
-    &pci_host_data_readl,
-};
-
-static CPUWriteMemoryFunc * const pci4xx_cfgdata_write[] = {
-    &pci_host_data_writeb,
-    &pci_host_data_writew,
-    &pci_host_data_writel,
-};
-
 static void ppc4xx_pci_reg_write4(void *opaque, target_phys_addr_t offset,
                                   uint32_t value)
 {
@@ -392,8 +378,8 @@ PCIBus *ppc4xx_pci_init(CPUState *env, qemu_irq pci_irqs[4],
     cpu_register_physical_memory(config_space + PCIC0_CFGADDR, 4, index);
 
     /* CFGDATA */
-    index = cpu_register_io_memory(pci4xx_cfgdata_read,
-                                   pci4xx_cfgdata_write,
+    index = cpu_register_io_memory(pci_host_data_read_mmio,
+                                   pci_host_data_write_mmio,
                                    &controller->pci_state);
     if (index < 0)
         goto free;
diff --git a/hw/ppce500_pci.c b/hw/ppce500_pci.c
index 64fccfd..4920837 100644
--- a/hw/ppce500_pci.c
+++ b/hw/ppce500_pci.c
@@ -17,7 +17,6 @@
 #include "hw.h"
 #include "ppc.h"
 #include "ppce500.h"
-typedef target_phys_addr_t pci_addr_t;
 #include "pci.h"
 #include "pci_host.h"
 #include "bswap.h"
@@ -116,18 +115,6 @@ static CPUWriteMemoryFunc * const pcie500_cfgaddr_write[] = {
     &pcie500_cfgaddr_writel,
 };
 
-static CPUReadMemoryFunc * const pcie500_cfgdata_read[] = {
-    &pci_host_data_readb,
-    &pci_host_data_readw,
-    &pci_host_data_readl,
-};
-
-static CPUWriteMemoryFunc * const pcie500_cfgdata_write[] = {
-    &pci_host_data_writeb,
-    &pci_host_data_writew,
-    &pci_host_data_writel,
-};
-
 static uint32_t pci_reg_read4(void *opaque, target_phys_addr_t addr)
 {
     PPCE500PCIState *pci = opaque;
@@ -344,8 +331,8 @@ PCIBus *ppce500_pci_init(qemu_irq pci_irqs[4], target_phys_addr_t registers)
     cpu_register_physical_memory(registers + PCIE500_CFGADDR, 4, index);
 
     /* CFGDATA */
-    index = cpu_register_io_memory(pcie500_cfgdata_read,
-                                   pcie500_cfgdata_write,
+    index = cpu_register_io_memory(pci_host_data_read_mmio,
+                                   pci_host_data_write_mmio,
                                    &controller->pci_state);
     if (index < 0)
         goto free;
diff --git a/hw/prep_pci.c b/hw/prep_pci.c
index 2d8a0fa..943de90 100644
--- a/hw/prep_pci.c
+++ b/hw/prep_pci.c
@@ -24,8 +24,6 @@
 
 #include "hw.h"
 #include "pci.h"
-
-typedef uint32_t pci_addr_t;
 #include "pci_host.h"
 
 typedef PCIHostState PREPPCIState;
@@ -144,12 +142,12 @@ PCIBus *pci_prep_init(qemu_irq *pic)
     register_ioport_write(0xcf8, 4, 4, pci_prep_addr_writel, s);
     register_ioport_read(0xcf8, 4, 4, pci_prep_addr_readl, s);
 
-    register_ioport_write(0xcfc, 4, 1, pci_host_data_writeb, s);
-    register_ioport_write(0xcfc, 4, 2, pci_host_data_writew, s);
-    register_ioport_write(0xcfc, 4, 4, pci_host_data_writel, s);
-    register_ioport_read(0xcfc, 4, 1, pci_host_data_readb, s);
-    register_ioport_read(0xcfc, 4, 2, pci_host_data_readw, s);
-    register_ioport_read(0xcfc, 4, 4, pci_host_data_readl, s);
+    register_ioport_write(0xcfc, 4, 1, pci_host_data_writeb_ioport, s);
+    register_ioport_write(0xcfc, 4, 2, pci_host_data_writew_ioport, s);
+    register_ioport_write(0xcfc, 4, 4, pci_host_data_writel_ioport, s);
+    register_ioport_read(0xcfc, 4, 1, pci_host_data_readb_ioport, s);
+    register_ioport_read(0xcfc, 4, 2, pci_host_data_readw_ioport, s);
+    register_ioport_read(0xcfc, 4, 4, pci_host_data_readl_ioport, s);
 
     PPC_io_memory = cpu_register_io_memory(PPC_PCIIO_read,
                                            PPC_PCIIO_write, s);
diff --git a/hw/unin_pci.c b/hw/unin_pci.c
index a202153..1d11816 100644
--- a/hw/unin_pci.c
+++ b/hw/unin_pci.c
@@ -24,6 +24,7 @@
 #include "hw.h"
 #include "ppc_mac.h"
 #include "pci.h"
+#include "pci_host.h"
 
 /* debug UniNorth */
 //#define DEBUG_UNIN
@@ -35,9 +36,6 @@
 #define UNIN_DPRINTF(fmt, ...)
 #endif
 
-typedef target_phys_addr_t pci_addr_t;
-#include "pci_host.h"
-
 typedef struct UNINState {
     SysBusDevice busdev;
     PCIHostState host_state;
@@ -83,18 +81,6 @@ static CPUReadMemoryFunc * const pci_unin_main_config_read[] = {
     &pci_unin_main_config_readl,
 };
 
-static CPUWriteMemoryFunc * const pci_unin_main_write[] = {
-    &pci_host_data_writeb,
-    &pci_host_data_writew,
-    &pci_host_data_writel,
-};
-
-static CPUReadMemoryFunc * const pci_unin_main_read[] = {
-    &pci_host_data_readb,
-    &pci_host_data_readw,
-    &pci_host_data_readl,
-};
-
 static void pci_unin_config_writel (void *opaque, target_phys_addr_t addr,
                                     uint32_t val)
 {
@@ -123,18 +109,6 @@ static CPUReadMemoryFunc * const pci_unin_config_read[] = {
     &pci_unin_config_readl,
 };
 
-static CPUWriteMemoryFunc * const pci_unin_write[] = {
-    &pci_host_data_writeb,
-    &pci_host_data_writew,
-    &pci_host_data_writel,
-};
-
-static CPUReadMemoryFunc * const pci_unin_read[] = {
-    &pci_host_data_readb,
-    &pci_host_data_readw,
-    &pci_host_data_readl,
-};
-
 /* Don't know if this matches real hardware, but it agrees with OHW.  */
 static int pci_unin_map_irq(PCIDevice *pci_dev, int irq_num)
 {
@@ -180,8 +154,9 @@ static int pci_unin_main_init_device(SysBusDevice *dev)
 
     pci_mem_config = cpu_register_io_memory(pci_unin_main_config_read,
                                             pci_unin_main_config_write, s);
-    pci_mem_data = cpu_register_io_memory(pci_unin_main_read,
-                                          pci_unin_main_write, &s->host_state);
+    pci_mem_data = cpu_register_io_memory(pci_host_data_read_mmio,
+                                          pci_host_data_write_mmio,
+                                          &s->host_state);
 
     sysbus_init_mmio(dev, 0x1000, pci_mem_config);
     sysbus_init_mmio(dev, 0x1000, pci_mem_data);
@@ -203,8 +178,9 @@ static int pci_dec_21154_init_device(SysBusDevice *dev)
     // XXX: s = &pci_bridge[2];
     pci_mem_config = cpu_register_io_memory(pci_unin_config_read,
                                             pci_unin_config_write, s);
-    pci_mem_data = cpu_register_io_memory(pci_unin_main_read,
-                                          pci_unin_main_write, &s->host_state);
+    pci_mem_data = cpu_register_io_memory(pci_host_data_read_mmio,
+                                          pci_host_data_write_mmio,
+                                          &s->host_state);
     sysbus_init_mmio(dev, 0x1000, pci_mem_config);
     sysbus_init_mmio(dev, 0x1000, pci_mem_data);
     return 0;
@@ -220,8 +196,9 @@ static int pci_unin_agp_init_device(SysBusDevice *dev)
 
     pci_mem_config = cpu_register_io_memory(pci_unin_config_read,
                                             pci_unin_config_write, s);
-    pci_mem_data = cpu_register_io_memory(pci_unin_main_read,
-                                          pci_unin_main_write, &s->host_state);
+    pci_mem_data = cpu_register_io_memory(pci_host_data_read_mmio,
+                                          pci_host_data_write_mmio,
+                                          &s->host_state);
     sysbus_init_mmio(dev, 0x1000, pci_mem_config);
     sysbus_init_mmio(dev, 0x1000, pci_mem_data);
     return 0;
@@ -237,8 +214,8 @@ static int pci_unin_internal_init_device(SysBusDevice *dev)
 
     pci_mem_config = cpu_register_io_memory(pci_unin_config_read,
                                             pci_unin_config_write, s);
-    pci_mem_data = cpu_register_io_memory(pci_unin_read,
-                                          pci_unin_write, s);
+    pci_mem_data = cpu_register_io_memory(pci_host_data_read_mmio,
+                                          pci_host_data_write_mmio, s);
     sysbus_init_mmio(dev, 0x1000, pci_mem_config);
     sysbus_init_mmio(dev, 0x1000, pci_mem_data);
     return 0;
