diff --git a/hw/ac97.c b/hw/ac97.c
index 610ca60079..534f899531 100644
--- a/hw/ac97.c
+++ b/hw/ac97.c
@@ -1331,8 +1331,9 @@ static int ac97_initfn (PCIDevice *dev)
     c[0x3c] = 0x00;      /* intr_ln interrupt line rw */
     c[0x3d] = 0x01;      /* intr_pn interrupt pin ro */
 
-    pci_register_bar (&s->dev, 0, 256 * 4, PCI_ADDRESS_SPACE_IO, ac97_map);
-    pci_register_bar (&s->dev, 1, 64 * 4, PCI_ADDRESS_SPACE_IO, ac97_map);
+    pci_register_bar (&s->dev, 0, 256 * 4, PCI_BASE_ADDRESS_SPACE_IO,
+                      ac97_map);
+    pci_register_bar (&s->dev, 1, 64 * 4, PCI_BASE_ADDRESS_SPACE_IO, ac97_map);
     register_savevm ("ac97", 0, 2, ac97_save, ac97_load, s);
     qemu_register_reset (ac97_on_reset, s);
     AUD_register_card ("ac97", &s->card);
diff --git a/hw/cirrus_vga.c b/hw/cirrus_vga.c
index eee66b18d2..e54d3cb88f 100644
--- a/hw/cirrus_vga.c
+++ b/hw/cirrus_vga.c
@@ -3241,10 +3241,10 @@ static int pci_cirrus_vga_initfn(PCIDevice *dev)
      /* memory #1 memory-mapped I/O */
      /* XXX: s->vga.vram_size must be a power of two */
      pci_register_bar((PCIDevice *)d, 0, 0x2000000,
-                      PCI_ADDRESS_SPACE_MEM_PREFETCH, cirrus_pci_lfb_map);
+                      PCI_BASE_ADDRESS_MEM_PREFETCH, cirrus_pci_lfb_map);
      if (device_id == CIRRUS_ID_CLGD5446) {
          pci_register_bar((PCIDevice *)d, 1, CIRRUS_PNPMMIO_SIZE,
-                          PCI_ADDRESS_SPACE_MEM, cirrus_pci_mmio_map);
+                          PCI_BASE_ADDRESS_SPACE_MEMORY, cirrus_pci_mmio_map);
      }
      vmstate_register(0, &vmstate_pci_cirrus_vga, d);
 
diff --git a/hw/e1000.c b/hw/e1000.c
index 8fb299d225..5759d6595f 100644
--- a/hw/e1000.c
+++ b/hw/e1000.c
@@ -1087,10 +1087,10 @@ static int pci_e1000_init(PCIDevice *pci_dev)
             e1000_mmio_write, d);
 
     pci_register_bar((PCIDevice *)d, 0, PNPMMIO_SIZE,
-                           PCI_ADDRESS_SPACE_MEM, e1000_mmio_map);
+                           PCI_BASE_ADDRESS_SPACE_MEMORY, e1000_mmio_map);
 
     pci_register_bar((PCIDevice *)d, 1, IOPORT_SIZE,
-                           PCI_ADDRESS_SPACE_IO, ioport_map);
+                           PCI_BASE_ADDRESS_SPACE_IO, ioport_map);
 
     memmove(d->eeprom_data, e1000_eeprom_template,
         sizeof e1000_eeprom_template);
diff --git a/hw/eepro100.c b/hw/eepro100.c
index 0842d4817c..829731e161 100644
--- a/hw/eepro100.c
+++ b/hw/eepro100.c
@@ -412,18 +412,20 @@ static void pci_reset(EEPRO100State * s)
     /* BIST (built-in self test) */
 #if defined(TARGET_I386)
 // !!! workaround for buggy bios
-//~ #define PCI_ADDRESS_SPACE_MEM_PREFETCH 0
+//~ #define PCI_BASE_ADDRESS_MEM_PREFETCH 0
 #endif
 #if 0
     /* PCI Base Address Registers */
     /* CSR Memory Mapped Base Address */
     PCI_CONFIG_32(PCI_BASE_ADDRESS_0,
-                  PCI_ADDRESS_SPACE_MEM | PCI_ADDRESS_SPACE_MEM_PREFETCH);
+                  PCI_BASE_ADDRESS_SPACE_MEMORY |
+                  PCI_BASE_ADDRESS_MEM_PREFETCH);
     /* CSR I/O Mapped Base Address */
-    PCI_CONFIG_32(PCI_BASE_ADDRESS_1, PCI_ADDRESS_SPACE_IO);
+    PCI_CONFIG_32(PCI_BASE_ADDRESS_1, PCI_BASE_ADDRESS_SPACE_IO);
 #if 0
     /* Flash Memory Mapped Base Address */
-    PCI_CONFIG_32(PCI_BASE_ADDRESS_2, 0xfffe0000 | PCI_ADDRESS_SPACE_MEM);
+    PCI_CONFIG_32(PCI_BASE_ADDRESS_2,
+                  0xfffe0000 | PCI_BASE_ADDRESS_SPACE_MEMORY);
 #endif
 #endif
     /* Expansion ROM Base Address (depends on boot disable!!!) */
@@ -1693,11 +1695,11 @@ static int nic_init(PCIDevice *pci_dev, uint32_t device)
         cpu_register_io_memory(pci_mmio_read, pci_mmio_write, s);
 
     pci_register_bar(&s->dev, 0, PCI_MEM_SIZE,
-                           PCI_ADDRESS_SPACE_MEM |
-                           PCI_ADDRESS_SPACE_MEM_PREFETCH, pci_mmio_map);
-    pci_register_bar(&s->dev, 1, PCI_IO_SIZE, PCI_ADDRESS_SPACE_IO,
+                           PCI_BASE_ADDRESS_SPACE_MEMORY |
+                           PCI_BASE_ADDRESS_MEM_PREFETCH, pci_mmio_map);
+    pci_register_bar(&s->dev, 1, PCI_IO_SIZE, PCI_BASE_ADDRESS_SPACE_IO,
                            pci_map);
-    pci_register_bar(&s->dev, 2, PCI_FLASH_SIZE, PCI_ADDRESS_SPACE_MEM,
+    pci_register_bar(&s->dev, 2, PCI_FLASH_SIZE, PCI_BASE_ADDRESS_SPACE_MEMORY,
                            pci_mmio_map);
 
     qemu_macaddr_default_if_unset(&s->conf.macaddr);
diff --git a/hw/es1370.c b/hw/es1370.c
index 9071a48180..f04895163a 100644
--- a/hw/es1370.c
+++ b/hw/es1370.c
@@ -1027,7 +1027,7 @@ static int es1370_initfn (PCIDevice *dev)
     c[0x3e] = 0x0c;
     c[0x3f] = 0x80;
 
-    pci_register_bar (&s->dev, 0, 256, PCI_ADDRESS_SPACE_IO, es1370_map);
+    pci_register_bar (&s->dev, 0, 256, PCI_BASE_ADDRESS_SPACE_IO, es1370_map);
     register_savevm ("es1370", 0, 2, es1370_save, es1370_load, s);
     qemu_register_reset (es1370_on_reset, s);
 
diff --git a/hw/ide/cmd646.c b/hw/ide/cmd646.c
index b2a3e434b3..9caeb78d91 100644
--- a/hw/ide/cmd646.c
+++ b/hw/ide/cmd646.c
@@ -221,11 +221,11 @@ static int pci_cmd646_ide_initfn(PCIDevice *dev)
         pci_conf[0x51] |= 0x08; /* enable IDE1 */
     }
 
-    pci_register_bar(dev, 0, 0x8, PCI_ADDRESS_SPACE_IO, ide_map);
-    pci_register_bar(dev, 1, 0x4, PCI_ADDRESS_SPACE_IO, ide_map);
-    pci_register_bar(dev, 2, 0x8, PCI_ADDRESS_SPACE_IO, ide_map);
-    pci_register_bar(dev, 3, 0x4, PCI_ADDRESS_SPACE_IO, ide_map);
-    pci_register_bar(dev, 4, 0x10, PCI_ADDRESS_SPACE_IO, bmdma_map);
+    pci_register_bar(dev, 0, 0x8, PCI_BASE_ADDRESS_SPACE_IO, ide_map);
+    pci_register_bar(dev, 1, 0x4, PCI_BASE_ADDRESS_SPACE_IO, ide_map);
+    pci_register_bar(dev, 2, 0x8, PCI_BASE_ADDRESS_SPACE_IO, ide_map);
+    pci_register_bar(dev, 3, 0x4, PCI_BASE_ADDRESS_SPACE_IO, ide_map);
+    pci_register_bar(dev, 4, 0x10, PCI_BASE_ADDRESS_SPACE_IO, bmdma_map);
 
     pci_conf[0x3d] = 0x01; // interrupt on pin 1
 
diff --git a/hw/ide/piix.c b/hw/ide/piix.c
index a4756e0f27..6e50fc2cb2 100644
--- a/hw/ide/piix.c
+++ b/hw/ide/piix.c
@@ -123,7 +123,7 @@ static int pci_piix_ide_initfn(PCIIDEState *d)
 
     qemu_register_reset(piix3_reset, d);
 
-    pci_register_bar(&d->dev, 4, 0x10, PCI_ADDRESS_SPACE_IO, bmdma_map);
+    pci_register_bar(&d->dev, 4, 0x10, PCI_BASE_ADDRESS_SPACE_IO, bmdma_map);
 
     vmstate_register(0, &vmstate_ide_pci, d);
 
diff --git a/hw/lsi53c895a.c b/hw/lsi53c895a.c
index a0aa406bfa..60621925b1 100644
--- a/hw/lsi53c895a.c
+++ b/hw/lsi53c895a.c
@@ -2089,11 +2089,11 @@ static int lsi_scsi_init(PCIDevice *dev)
                                             lsi_ram_writefn, s);
 
     pci_register_bar((struct PCIDevice *)s, 0, 256,
-                           PCI_ADDRESS_SPACE_IO, lsi_io_mapfunc);
+                           PCI_BASE_ADDRESS_SPACE_IO, lsi_io_mapfunc);
     pci_register_bar((struct PCIDevice *)s, 1, 0x400,
-                           PCI_ADDRESS_SPACE_MEM, lsi_mmio_mapfunc);
+                           PCI_BASE_ADDRESS_SPACE_MEMORY, lsi_mmio_mapfunc);
     pci_register_bar((struct PCIDevice *)s, 2, 0x2000,
-                           PCI_ADDRESS_SPACE_MEM, lsi_ram_mapfunc);
+                           PCI_BASE_ADDRESS_SPACE_MEMORY, lsi_ram_mapfunc);
     s->queue = qemu_malloc(sizeof(lsi_queue));
     s->queue_len = 1;
     s->active_commands = 0;
diff --git a/hw/macio.c b/hw/macio.c
index 8cfadfc5e0..0703abc7f9 100644
--- a/hw/macio.c
+++ b/hw/macio.c
@@ -115,5 +115,5 @@ void macio_init (PCIBus *bus, int device_id, int is_oldworld, int pic_mem_index,
     d->config[0x3d] = 0x01; // interrupt on pin 1
 
     pci_register_bar(d, 0, 0x80000,
-                           PCI_ADDRESS_SPACE_MEM, macio_map);
+                           PCI_BASE_ADDRESS_SPACE_MEMORY, macio_map);
 }
diff --git a/hw/ne2000.c b/hw/ne2000.c
index 97204e8e82..5fe388384e 100644
--- a/hw/ne2000.c
+++ b/hw/ne2000.c
@@ -719,7 +719,7 @@ static int pci_ne2000_init(PCIDevice *pci_dev)
     pci_conf[0x3d] = 1; // interrupt pin 0
 
     pci_register_bar(&d->dev, 0, 0x100,
-                           PCI_ADDRESS_SPACE_IO, ne2000_map);
+                           PCI_BASE_ADDRESS_SPACE_IO, ne2000_map);
     s = &d->ne2000;
     s->irq = d->dev.irq[0];
 
diff --git a/hw/openpic.c b/hw/openpic.c
index ebf441c4b7..f73fd6338c 100644
--- a/hw/openpic.c
+++ b/hw/openpic.c
@@ -1213,7 +1213,7 @@ qemu_irq *openpic_init (PCIBus *bus, int *pmem_index, int nb_cpus,
 
         /* Register I/O spaces */
         pci_register_bar((PCIDevice *)opp, 0, 0x40000,
-                               PCI_ADDRESS_SPACE_MEM, &openpic_map);
+                               PCI_BASE_ADDRESS_SPACE_MEMORY, &openpic_map);
     } else {
         opp = qemu_mallocz(sizeof(openpic_t));
     }
diff --git a/hw/pci.c b/hw/pci.c
index 84c7611007..91acb85e2d 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -420,7 +420,7 @@ static void pci_unregister_io_regions(PCIDevice *pci_dev)
         r = &pci_dev->io_regions[i];
         if (!r->size || r->addr == PCI_BAR_UNMAPPED)
             continue;
-        if (r->type == PCI_ADDRESS_SPACE_IO) {
+        if (r->type == PCI_BASE_ADDRESS_SPACE_IO) {
             isa_unassign_ioport(r->addr, r->size);
         } else {
             cpu_register_physical_memory(pci_to_cpu_addr(r->addr),
@@ -492,7 +492,7 @@ static void pci_update_mappings(PCIDevice *d)
     for(i = 0; i < PCI_NUM_REGIONS; i++) {
         r = &d->io_regions[i];
         if (r->size != 0) {
-            if (r->type & PCI_ADDRESS_SPACE_IO) {
+            if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
                 if (cmd & PCI_COMMAND_IO) {
                     new_addr = pci_get_long(d->config + pci_bar(i));
                     new_addr = new_addr & ~(r->size - 1);
@@ -529,7 +529,7 @@ static void pci_update_mappings(PCIDevice *d)
             /* now do the real mapping */
             if (new_addr != r->addr) {
                 if (r->addr != PCI_BAR_UNMAPPED) {
-                    if (r->type & PCI_ADDRESS_SPACE_IO) {
+                    if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
                         int class;
                         /* NOTE: specific hack for IDE in PC case:
                            only one byte must be mapped. */
@@ -771,7 +771,7 @@ static void pci_info_device(PCIDevice *d)
         r = &d->io_regions[i];
         if (r->size != 0) {
             monitor_printf(mon, "      BAR%d: ", i);
-            if (r->type & PCI_ADDRESS_SPACE_IO) {
+            if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
                 monitor_printf(mon, "I/O at 0x%04x [0x%04x].\n",
                                r->addr, r->addr + r->size - 1);
             } else {
@@ -1135,7 +1135,7 @@ static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent)
         if (!r->size)
             continue;
         monitor_printf(mon, "%*sbar %d: %s at 0x%x [0x%x]\n", indent, "",
-                       i, r->type & PCI_ADDRESS_SPACE_IO ? "i/o" : "mem",
+                       i, r->type & PCI_BASE_ADDRESS_SPACE_IO ? "i/o" : "mem",
                        r->addr, r->addr + r->size - 1);
     }
 }
diff --git a/hw/pci.h b/hw/pci.h
index 157995c96d..bbce56bc04 100644
--- a/hw/pci.h
+++ b/hw/pci.h
@@ -79,10 +79,6 @@ typedef void PCIMapIORegionFunc(PCIDevice *pci_dev, int region_num,
                                 uint32_t addr, uint32_t size, int type);
 typedef int PCIUnregisterFunc(PCIDevice *pci_dev);
 
-#define PCI_ADDRESS_SPACE_MEM		0x00
-#define PCI_ADDRESS_SPACE_IO		0x01
-#define PCI_ADDRESS_SPACE_MEM_PREFETCH	0x08
-
 typedef struct PCIIORegion {
     uint32_t addr; /* current PCI mapping address. -1 means not mapped */
 #define PCI_BAR_UNMAPPED (~(uint32_t)0)
@@ -113,6 +109,9 @@ typedef struct PCIIORegion {
 #define  PCI_HEADER_TYPE_CARDBUS	2
 #define  PCI_HEADER_TYPE_MULTI_FUNCTION 0x80
 #define PCI_BASE_ADDRESS_0	0x10	/* 32 bits */
+#define  PCI_BASE_ADDRESS_SPACE_IO	0x01
+#define  PCI_BASE_ADDRESS_SPACE_MEMORY	0x00
+#define  PCI_BASE_ADDRESS_MEM_PREFETCH	0x08	/* prefetchable? */
 #define PCI_PRIMARY_BUS		0x18	/* Primary bus number */
 #define PCI_SECONDARY_BUS	0x19	/* Secondary bus number */
 #define PCI_SEC_STATUS		0x1e	/* Secondary status register, only bit 14 used */
diff --git a/hw/pcnet.c b/hw/pcnet.c
index a2c868927f..a2bd5155e7 100644
--- a/hw/pcnet.c
+++ b/hw/pcnet.c
@@ -1996,10 +1996,10 @@ static int pci_pcnet_init(PCIDevice *pci_dev)
       cpu_register_io_memory(pcnet_mmio_read, pcnet_mmio_write, &d->state);
 
     pci_register_bar((PCIDevice *)d, 0, PCNET_IOPORT_SIZE,
-                           PCI_ADDRESS_SPACE_IO, pcnet_ioport_map);
+                           PCI_BASE_ADDRESS_SPACE_IO, pcnet_ioport_map);
 
     pci_register_bar((PCIDevice *)d, 1, PCNET_PNPMMIO_SIZE,
-                           PCI_ADDRESS_SPACE_MEM, pcnet_mmio_map);
+                           PCI_BASE_ADDRESS_SPACE_MEMORY, pcnet_mmio_map);
 
     s->irq = pci_dev->irq[0];
     s->phys_mem_read = pci_physical_memory_read;
diff --git a/hw/rtl8139.c b/hw/rtl8139.c
index 27cc618e00..26acbefb2d 100644
--- a/hw/rtl8139.c
+++ b/hw/rtl8139.c
@@ -3325,10 +3325,10 @@ static int pci_rtl8139_init(PCIDevice *dev)
     cpu_register_io_memory(rtl8139_mmio_read, rtl8139_mmio_write, s);
 
     pci_register_bar(&s->dev, 0, 0x100,
-                           PCI_ADDRESS_SPACE_IO,  rtl8139_ioport_map);
+                           PCI_BASE_ADDRESS_SPACE_IO,  rtl8139_ioport_map);
 
     pci_register_bar(&s->dev, 1, 0x100,
-                           PCI_ADDRESS_SPACE_MEM, rtl8139_mmio_map);
+                           PCI_BASE_ADDRESS_SPACE_MEMORY, rtl8139_mmio_map);
 
     qemu_macaddr_default_if_unset(&s->conf.macaddr);
 
diff --git a/hw/sun4u.c b/hw/sun4u.c
index 8f11442f08..6f98c4391d 100644
--- a/hw/sun4u.c
+++ b/hw/sun4u.c
@@ -389,9 +389,9 @@ pci_ebus_init1(PCIDevice *s)
     s->config[0x0D] = 0x0a; // latency_timer
     s->config[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type
 
-    pci_register_bar(s, 0, 0x1000000, PCI_ADDRESS_SPACE_MEM,
+    pci_register_bar(s, 0, 0x1000000, PCI_BASE_ADDRESS_SPACE_MEMORY,
                            ebus_mmio_mapfunc);
-    pci_register_bar(s, 1, 0x800000,  PCI_ADDRESS_SPACE_MEM,
+    pci_register_bar(s, 1, 0x800000,  PCI_BASE_ADDRESS_SPACE_MEMORY,
                            ebus_mmio_mapfunc);
     return 0;
 }
diff --git a/hw/usb-ohci.c b/hw/usb-ohci.c
index f71d6b8d1b..0cafbe6360 100644
--- a/hw/usb-ohci.c
+++ b/hw/usb-ohci.c
@@ -1729,7 +1729,7 @@ static int usb_ohci_initfn_pci(struct PCIDevice *dev)
                   OHCI_TYPE_PCI, ohci->pci_dev.name, 0);
 
     pci_register_bar((struct PCIDevice *)ohci, 0, 256,
-                           PCI_ADDRESS_SPACE_MEM, ohci_mapfunc);
+                           PCI_BASE_ADDRESS_SPACE_MEMORY, ohci_mapfunc);
     return 0;
 }
 
diff --git a/hw/usb-uhci.c b/hw/usb-uhci.c
index 1580a50a3f..21de2935e7 100644
--- a/hw/usb-uhci.c
+++ b/hw/usb-uhci.c
@@ -1083,7 +1083,7 @@ static int usb_uhci_common_initfn(UHCIState *s)
     /* Use region 4 for consistency with real hardware.  BSD guests seem
        to rely on this.  */
     pci_register_bar(&s->dev, 4, 0x20,
-                           PCI_ADDRESS_SPACE_IO, uhci_map);
+                           PCI_BASE_ADDRESS_SPACE_IO, uhci_map);
 
     vmstate_register(0, &vmstate_uhci, s);
     return 0;
diff --git a/hw/vga-pci.c b/hw/vga-pci.c
index a8ec729e71..acc7861da1 100644
--- a/hw/vga-pci.c
+++ b/hw/vga-pci.c
@@ -95,7 +95,7 @@ static int pci_vga_initfn(PCIDevice *dev)
 
      /* XXX: VGA_RAM_SIZE must be a power of two */
      pci_register_bar(&d->dev, 0, VGA_RAM_SIZE,
-                      PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
+                      PCI_BASE_ADDRESS_MEM_PREFETCH, vga_map);
 
      if (s->bios_size) {
         unsigned int bios_total_size;
@@ -104,7 +104,7 @@ static int pci_vga_initfn(PCIDevice *dev)
         while (bios_total_size < s->bios_size)
             bios_total_size <<= 1;
         pci_register_bar(&d->dev, PCI_ROM_SLOT, bios_total_size,
-                         PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
+                         PCI_BASE_ADDRESS_MEM_PREFETCH, vga_map);
      }
 
      /* ROM BIOS */
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index 1665b59baa..1b0702a9f0 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -415,7 +415,7 @@ static void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev,
     if (vdev->nvectors && !msix_init(&proxy->pci_dev, vdev->nvectors, 1, 0)) {
         pci_register_bar(&proxy->pci_dev, 1,
                          msix_bar_size(&proxy->pci_dev),
-                         PCI_ADDRESS_SPACE_MEM,
+                         PCI_BASE_ADDRESS_SPACE_MEMORY,
                          msix_mmio_map);
     } else
         vdev->nvectors = 0;
@@ -426,7 +426,7 @@ static void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev,
     if (size & (size-1))
         size = 1 << qemu_fls(size);
 
-    pci_register_bar(&proxy->pci_dev, 0, size, PCI_ADDRESS_SPACE_IO,
+    pci_register_bar(&proxy->pci_dev, 0, size, PCI_BASE_ADDRESS_SPACE_IO,
                            virtio_map);
 
     virtio_bind_device(vdev, &virtio_pci_bindings, proxy);
diff --git a/hw/vmware_vga.c b/hw/vmware_vga.c
index 77d766912b..baafedde7d 100644
--- a/hw/vmware_vga.c
+++ b/hw/vmware_vga.c
@@ -1182,9 +1182,9 @@ static int pci_vmsvga_initfn(PCIDevice *dev)
     s->card.config[0x3c]		= 0xff;		/* End */
 
     pci_register_bar(&s->card, 0, 0x10,
-                    PCI_ADDRESS_SPACE_IO, pci_vmsvga_map_ioport);
+                    PCI_BASE_ADDRESS_SPACE_IO, pci_vmsvga_map_ioport);
     pci_register_bar(&s->card, 1, VGA_RAM_SIZE,
-                    PCI_ADDRESS_SPACE_MEM_PREFETCH, pci_vmsvga_map_mem);
+                    PCI_BASE_ADDRESS_MEM_PREFETCH, pci_vmsvga_map_mem);
 
     vmsvga_init(&s->chip, VGA_RAM_SIZE);
 
diff --git a/hw/wdt_i6300esb.c b/hw/wdt_i6300esb.c
index 40081cae6e..75f1fc6ab7 100644
--- a/hw/wdt_i6300esb.c
+++ b/hw/wdt_i6300esb.c
@@ -413,7 +413,7 @@ static int i6300esb_init(PCIDevice *dev)
     pci_conf[0x0e] = 0x00;
 
     pci_register_bar(&d->dev, 0, 0x10,
-                            PCI_ADDRESS_SPACE_MEM, i6300esb_map);
+                            PCI_BASE_ADDRESS_SPACE_MEMORY, i6300esb_map);
 
     vmstate_register(-1, &vmstate_i6300esb, d);