1 files changed, 90 insertions, 0 deletions
diff --git a/hw/hppa/pci.c b/hw/hppa/pci.c
new file mode 100644
index 0000000000..766420254e
--- /dev/null
+++ b/hw/hppa/pci.c
@@ -0,0 +1,90 @@
+/*
+ * QEMU HP-PARISC PCI support functions.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "qemu-common.h"
+#include "hppa_sys.h"
+#include "qemu/log.h"
+#include "sysemu/sysemu.h"
+#include "trace.h"
+
+
+/* Fallback for unassigned PCI I/O operations.  Avoids MCHK.  */
+
+static uint64_t ignore_read(void *opaque, hwaddr addr, unsigned size)
+{
+    return 0;
+}
+
+static void ignore_write(void *opaque, hwaddr addr, uint64_t v, unsigned size)
+{
+}
+
+const MemoryRegionOps hppa_pci_ignore_ops = {
+    .read = ignore_read,
+    .write = ignore_write,
+    .endianness = DEVICE_BIG_ENDIAN,
+    .valid = {
+        .min_access_size = 1,
+        .max_access_size = 8,
+    },
+    .impl = {
+        .min_access_size = 1,
+        .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)
+{
+    PCIBus *b = opaque;
+    return pci_data_read(b, addr, size);
+}
+
+static void bw_conf1_write(void *opaque, hwaddr addr,
+                           uint64_t val, unsigned size)
+{
+    PCIBus *b = opaque;
+    pci_data_write(b, addr, val, size);
+}
+
+const MemoryRegionOps hppa_pci_conf1_ops = {
+    .read = bw_conf1_read,
+    .write = bw_conf1_write,
+    .endianness = DEVICE_BIG_ENDIAN,
+    .impl = {
+        .min_access_size = 1,
+        .max_access_size = 4,
+    },
+};
+
+/* PCI/EISA Interrupt Acknowledge Cycle.  */
+
+static uint64_t iack_read(void *opaque, hwaddr addr, unsigned size)
+{
+    return pic_read_irq(isa_pic);
+}
+
+static void special_write(void *opaque, hwaddr addr,
+                          uint64_t val, unsigned size)
+{
+    trace_hppa_pci_iack_write();
+}
+
+const MemoryRegionOps hppa_pci_iack_ops = {
+    .read = iack_read,
+    .write = special_write,
+    .endianness = DEVICE_BIG_ENDIAN,
+    .valid = {
+        .min_access_size = 4,
+        .max_access_size = 4,
+    },
+    .impl = {
+        .min_access_size = 4,
+        .max_access_size = 4,
+    },
+};