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-rw-r--r--hw/pcie_port.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/hw/pcie_port.c b/hw/pcie_port.c
index 117de6186e..340dcdb3c4 100644
--- a/hw/pcie_port.c
+++ b/hw/pcie_port.c
@@ -27,6 +27,14 @@ void pcie_port_init_reg(PCIDevice *d)
pci_set_word(d->config + PCI_STATUS, 0);
pci_set_word(d->config + PCI_SEC_STATUS, 0);
+ /* Unlike conventional pci bridge, some bits are hardwared to 0. */
+ pci_set_word(d->wmask + PCI_BRIDGE_CONTROL,
+ PCI_BRIDGE_CTL_PARITY |
+ PCI_BRIDGE_CTL_ISA |
+ PCI_BRIDGE_CTL_VGA |
+ PCI_BRIDGE_CTL_SERR |
+ PCI_BRIDGE_CTL_BUS_RESET);
+
/* 7.5.3.5 Prefetchable Memory Base Limit
* The Prefetchable Memory Base and Prefetchable Memory Limit registers
* must indicate that 64-bit addresses are supported, as defined in