1 files changed, 13 insertions, 31 deletions
diff --git a/hw/alpha/pci.c b/hw/alpha/pci.c
index 7327d488fd..d839dd556a 100644
--- a/hw/alpha/pci.c
+++ b/hw/alpha/pci.c
@@ -12,50 +12,32 @@
 #include "sysemu/sysemu.h"
 
 
-/* PCI IO reads/writes, to byte-word addressable memory.  */
-/* ??? Doesn't handle multiple PCI busses.  */
+/* Fallback for unassigned PCI I/O operations.  Avoids MCHK.  */
 
-static uint64_t bw_io_read(void *opaque, hwaddr addr, unsigned size)
+static uint64_t ignore_read(void *opaque, hwaddr addr, unsigned size)
 {
-    switch (size) {
-    case 1:
-        return cpu_inb(addr);
-    case 2:
-        return cpu_inw(addr);
-    case 4:
-        return cpu_inl(addr);
-    }
-    abort();
+    return 0;
 }
 
-static void bw_io_write(void *opaque, hwaddr addr,
-                        uint64_t val, unsigned size)
+static void ignore_write(void *opaque, hwaddr addr, uint64_t v, unsigned size)
 {
-    switch (size) {
-    case 1:
-        cpu_outb(addr, val);
-        break;
-    case 2:
-        cpu_outw(addr, val);
-        break;
-    case 4:
-        cpu_outl(addr, val);
-        break;
-    default:
-        abort();
-    }
 }
 
-const MemoryRegionOps alpha_pci_bw_io_ops = {
-    .read = bw_io_read,
-    .write = bw_io_write,
+const MemoryRegionOps alpha_pci_ignore_ops = {
+    .read = ignore_read,
+    .write = ignore_write,
     .endianness = DEVICE_LITTLE_ENDIAN,
+    .valid = {
+        .min_access_size = 1,
+        .max_access_size = 8,
+    },
     .impl = {
         .min_access_size = 1,
-        .max_access_size = 4,
+        .max_access_size = 8,
     },
 };
 
+
 /* PCI config space reads/writes, to byte-word addressable memory.  */
 static uint64_t bw_conf1_read(void *opaque, hwaddr addr,
                               unsigned size)