1 files changed, 101 insertions, 0 deletions
diff --git a/hw/pci-bridge/simba.c b/hw/pci-bridge/simba.c
new file mode 100644
index 0000000000..dea4c8c5e7
--- /dev/null
+++ b/hw/pci-bridge/simba.c
@@ -0,0 +1,101 @@
+/*
+ * QEMU Simba PCI bridge
+ *
+ * Copyright (c) 2006 Fabrice Bellard
+ * Copyright (c) 2012,2013 Artyom Tarasenko
+ * Copyright (c) 2018 Mark Cave-Ayland
+ *
+ * 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 "qemu/osdep.h"
+#include "hw/pci/pci.h"
+#include "hw/pci/pci_bridge.h"
+#include "hw/pci/pci_bus.h"
+#include "hw/pci-bridge/simba.h"
+
+/*
+ * Chipset docs:
+ * APB: "Advanced PCI Bridge (APB) User's Manual",
+ * http://www.sun.com/processors/manuals/805-1251.pdf
+ */
+
+static void simba_pci_bridge_realize(PCIDevice *dev, Error **errp)
+{
+    /*
+     * command register:
+     * According to PCI bridge spec, after reset
+     *   bus master bit is off
+     *   memory space enable bit is off
+     * According to manual (805-1251.pdf).
+     *   the reset value should be zero unless the boot pin is tied high
+     *   (which is true) and thus it should be PCI_COMMAND_MEMORY.
+     */
+    SimbaPCIBridge *br = SIMBA_PCI_BRIDGE(dev);
+
+    pci_bridge_initfn(dev, TYPE_PCI_BUS);
+
+    pci_set_word(dev->config + PCI_COMMAND, PCI_COMMAND_MEMORY);
+    pci_set_word(dev->config + PCI_STATUS,
+                 PCI_STATUS_FAST_BACK | PCI_STATUS_66MHZ |
+                 PCI_STATUS_DEVSEL_MEDIUM);
+
+    /* Allow 32-bit IO addresses */
+    pci_set_word(dev->config + PCI_IO_BASE, PCI_IO_RANGE_TYPE_32);
+    pci_set_word(dev->config + PCI_IO_LIMIT, PCI_IO_RANGE_TYPE_32);
+    pci_set_word(dev->wmask + PCI_IO_BASE_UPPER16, 0xffff);
+    pci_set_word(dev->wmask + PCI_IO_LIMIT_UPPER16, 0xffff);
+
+    pci_bridge_update_mappings(PCI_BRIDGE(br));
+}
+
+static void simba_pci_bridge_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
+
+    k->realize = simba_pci_bridge_realize;
+    k->exit = pci_bridge_exitfn;
+    k->vendor_id = PCI_VENDOR_ID_SUN;
+    k->device_id = PCI_DEVICE_ID_SUN_SIMBA;
+    k->revision = 0x11;
+    k->config_write = pci_bridge_write_config;
+    k->is_bridge = 1;
+    set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
+    dc->reset = pci_bridge_reset;
+    dc->vmsd = &vmstate_pci_device;
+}
+
+static const TypeInfo simba_pci_bridge_info = {
+    .name          = TYPE_SIMBA_PCI_BRIDGE,
+    .parent        = TYPE_PCI_BRIDGE,
+    .class_init    = simba_pci_bridge_class_init,
+    .instance_size = sizeof(SimbaPCIBridge),
+    .interfaces = (InterfaceInfo[]) {
+        { INTERFACE_CONVENTIONAL_PCI_DEVICE },
+        { },
+    },
+};
+
+static void simba_register_types(void)
+{
+    type_register_static(&simba_pci_bridge_info);
+}
+
+type_init(simba_register_types)