.device = PCI_DEVICE_ID_ATI_SB800_GEC,
};
+/**
+ * @brief Enable PCI Bridge
+ *
+ * PcibConfig [PM_Reg: EAh], PCIDisable [Bit0]
+ * 'PCIDisable' set to 0 to enable P2P bridge.
+ * 'PCIDisable' set to 1 to disable P2P bridge and enable PCI interface pins
+ * to function as GPIO {GPIO 35:0}.
+ */
+static void pci_init(device_t dev)
+{
+ /* PCI Bridge SHOULD be enabled by default according to SB800 rrg,
+ * but actually was disabled in some platform, so I have to enabled it.
+ */
+ RWMEM(ACPI_MMIO_BASE + PMIO_BASE + SB_PMIOA_REGEA, AccWidthUint8, ~BIT0, 0);
+}
static void pcie_init(device_t dev)
{
.read_resources = pci_bus_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_bus_enable_resources,
- .init = pcie_init,
+ .init = pci_init,
.scan_bus = pci_scan_bridge,
.reset_bus = pci_bus_reset,
.ops_pci = &lops_pci,