Refactor DEC 21154 PCI bridge

It's currently not used by PPC machines. Refactor so that also Sparc64
machines can use it.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

1 files changed, 84 insertions, 0 deletions

diff --git a/hw/dec_pci.c b/hw/dec_pci.c
new file mode 100644
index 0000000000..2bf4f71b42
--- /dev/null
+++ b/hw/dec_pci.c
@@ -0,0 +1,84 @@
+/*
+ * QEMU DEC 21154 PCI bridge
+ *
+ * Copyright (c) 2006-2007 Fabrice Bellard
+ * Copyright (c) 2007 Jocelyn Mayer
+ *
+ * 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 "sysbus.h"
+#include "pci.h"
+#include "pci_host.h"
+
+/* debug DEC */
+//#define DEBUG_DEC
+
+#ifdef DEBUG_DEC
+#define DEC_DPRINTF(fmt, ...)                               \
+    do { printf("DEC: " fmt , ## __VA_ARGS__); } while (0)
+#else
+#define DEC_DPRINTF(fmt, ...)
+#endif
+
+typedef struct DECState {
+    SysBusDevice busdev;
+    PCIHostState host_state;
+} DECState;
+
+static int pci_dec_21154_init_device(SysBusDevice *dev)
+{
+    DECState *s;
+    int pci_mem_config, pci_mem_data;
+
+    s = FROM_SYSBUS(DECState, dev);
+
+    pci_mem_config = pci_host_conf_register_mmio(&s->host_state);
+    pci_mem_data = pci_host_data_register_mmio(&s->host_state);
+    sysbus_init_mmio(dev, 0x1000, pci_mem_config);
+    sysbus_init_mmio(dev, 0x1000, pci_mem_data);
+    return 0;
+}
+
+static int dec_21154_pci_host_init(PCIDevice *d)
+{
+    /* PCI2PCI bridge same values as PearPC - check this */
+    pci_config_set_vendor_id(d->config, PCI_VENDOR_ID_DEC);
+    pci_config_set_device_id(d->config, PCI_DEVICE_ID_DEC_21154);
+    d->config[0x08] = 0x02; // revision
+    pci_config_set_class(d->config, PCI_CLASS_BRIDGE_PCI);
+    d->config[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_BRIDGE; // header_type
+    return 0;
+}
+
+static PCIDeviceInfo dec_21154_pci_host_info = {
+    .qdev.name = "dec-21154",
+    .qdev.size = sizeof(PCIDevice),
+    .init      = dec_21154_pci_host_init,
+    .header_type  = PCI_HEADER_TYPE_BRIDGE,
+};
+
+static void dec_register_devices(void)
+{
+    sysbus_register_dev("dec-21154", sizeof(DECState),
+                        pci_dec_21154_init_device);
+    pci_qdev_register(&dec_21154_pci_host_info);
+}
+
+device_init(dec_register_devices)