diff --git a/default-configs/mips-softmmu.mak b/default-configs/mips-softmmu.mak
index b443702b87..6cdca11a4d 100644
--- a/default-configs/mips-softmmu.mak
+++ b/default-configs/mips-softmmu.mak
@@ -3,7 +3,6 @@
 include pci.mak
 include sound.mak
 include usb.mak
-CONFIG_ISA_MMIO=y
 CONFIG_ESP=y
 CONFIG_VGA=y
 CONFIG_VGA_PCI=y
diff --git a/default-configs/mips64-softmmu.mak b/default-configs/mips64-softmmu.mak
index d63895792b..89978543c4 100644
--- a/default-configs/mips64-softmmu.mak
+++ b/default-configs/mips64-softmmu.mak
@@ -3,7 +3,6 @@
 include pci.mak
 include sound.mak
 include usb.mak
-CONFIG_ISA_MMIO=y
 CONFIG_ESP=y
 CONFIG_VGA=y
 CONFIG_VGA_PCI=y
diff --git a/default-configs/mips64el-softmmu.mak b/default-configs/mips64el-softmmu.mak
index c9be3f49ca..f18f3fc441 100644
--- a/default-configs/mips64el-softmmu.mak
+++ b/default-configs/mips64el-softmmu.mak
@@ -3,7 +3,6 @@
 include pci.mak
 include sound.mak
 include usb.mak
-CONFIG_ISA_MMIO=y
 CONFIG_ESP=y
 CONFIG_VGA=y
 CONFIG_VGA_PCI=y
diff --git a/default-configs/mipsel-softmmu.mak b/default-configs/mipsel-softmmu.mak
index 4f4a449408..6281f48380 100644
--- a/default-configs/mipsel-softmmu.mak
+++ b/default-configs/mipsel-softmmu.mak
@@ -3,7 +3,6 @@
 include pci.mak
 include sound.mak
 include usb.mak
-CONFIG_ISA_MMIO=y
 CONFIG_ESP=y
 CONFIG_VGA=y
 CONFIG_VGA_PCI=y
diff --git a/default-configs/sh4-softmmu.mak b/default-configs/sh4-softmmu.mak
index f6bf62d1c2..ef963ee665 100644
--- a/default-configs/sh4-softmmu.mak
+++ b/default-configs/sh4-softmmu.mak
@@ -5,7 +5,6 @@ include usb.mak
 CONFIG_SERIAL=y
 CONFIG_PTIMER=y
 CONFIG_PFLASH_CFI02=y
-CONFIG_ISA_MMIO=y
 CONFIG_SH4=y
 CONFIG_IDE_MMIO=y
 CONFIG_SM501=y
diff --git a/default-configs/sh4eb-softmmu.mak b/default-configs/sh4eb-softmmu.mak
index c1d513d099..e744486ac5 100644
--- a/default-configs/sh4eb-softmmu.mak
+++ b/default-configs/sh4eb-softmmu.mak
@@ -5,7 +5,6 @@ include usb.mak
 CONFIG_SERIAL=y
 CONFIG_PTIMER=y
 CONFIG_PFLASH_CFI02=y
-CONFIG_ISA_MMIO=y
 CONFIG_SH4=y
 CONFIG_IDE_MMIO=y
 CONFIG_SM501=y
diff --git a/hw/isa/Makefile.objs b/hw/isa/Makefile.objs
index 193746a73e..9164556a4d 100644
--- a/hw/isa/Makefile.objs
+++ b/hw/isa/Makefile.objs
@@ -1,7 +1,6 @@
 common-obj-y += isa-bus.o
 common-obj-$(CONFIG_APM) += apm.o
 common-obj-$(CONFIG_I82378) += i82378.o
-common-obj-$(CONFIG_ISA_MMIO) += isa_mmio.o
 common-obj-$(CONFIG_PC87312) += pc87312.o
 common-obj-$(CONFIG_PIIX4) += piix4.o
 common-obj-$(CONFIG_VT82C686) += vt82c686.o
diff --git a/hw/isa/isa_mmio.c b/hw/isa/isa_mmio.c
deleted file mode 100644
index 00ae8ebc2e..0000000000
--- a/hw/isa/isa_mmio.c
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * Memory mapped access to ISA IO space.
- *
- * Copyright (c) 2006 Fabrice Bellard
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include "hw/hw.h"
-#include "hw/isa/isa.h"
-#include "exec/address-spaces.h"
-
-static void isa_mmio_writeb (void *opaque, hwaddr addr,
-                                  uint32_t val)
-{
-    cpu_outb(addr & IOPORTS_MASK, val);
-}
-
-static void isa_mmio_writew(void *opaque, hwaddr addr,
-                               uint32_t val)
-{
-    cpu_outw(addr & IOPORTS_MASK, val);
-}
-
-static void isa_mmio_writel(void *opaque, hwaddr addr,
-                               uint32_t val)
-{
-    cpu_outl(addr & IOPORTS_MASK, val);
-}
-
-static uint32_t isa_mmio_readb (void *opaque, hwaddr addr)
-{
-    return cpu_inb(addr & IOPORTS_MASK);
-}
-
-static uint32_t isa_mmio_readw(void *opaque, hwaddr addr)
-{
-    return cpu_inw(addr & IOPORTS_MASK);
-}
-
-static uint32_t isa_mmio_readl(void *opaque, hwaddr addr)
-{
-    return cpu_inl(addr & IOPORTS_MASK);
-}
-
-static const MemoryRegionOps isa_mmio_ops = {
-    .old_mmio = {
-        .write = { isa_mmio_writeb, isa_mmio_writew, isa_mmio_writel },
-        .read = { isa_mmio_readb, isa_mmio_readw, isa_mmio_readl, },
-    },
-    .endianness = DEVICE_LITTLE_ENDIAN,
-};
-
-void isa_mmio_setup(MemoryRegion *mr, hwaddr size)
-{
-    memory_region_init_io(mr, NULL, &isa_mmio_ops, NULL, "isa-mmio", size);
-}
-
-void isa_mmio_init(hwaddr base, hwaddr size)
-{
-    MemoryRegion *mr = g_malloc(sizeof(*mr));
-
-    isa_mmio_setup(mr, size);
-    memory_region_add_subregion(get_system_memory(), base, mr);
-}
diff --git a/include/hw/isa/isa.h b/include/hw/isa/isa.h
index e1bf96ca69..495bcf3a08 100644
--- a/include/hw/isa/isa.h
+++ b/include/hw/isa/isa.h
@@ -92,9 +92,6 @@ static inline ISABus *isa_bus_from_device(ISADevice *d)
 
 extern hwaddr isa_mem_base;
 
-void isa_mmio_setup(MemoryRegion *mr, hwaddr size);
-void isa_mmio_init(hwaddr base, hwaddr size);
-
 /* dma.c */
 int DMA_get_channel_mode (int nchan);
 int DMA_read_memory (int nchan, void *buf, int pos, int size);