diff options
| author | Michael S. Tsirkin <mst@redhat.com> | 2013-03-04 11:23:49 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2013-03-26 21:02:17 +0200 |
| commit | 45eb768c706d3a5fbe55224c589e8b4e252781d9 (patch) | |
| tree | d3de1d700976fe8efae8942b64f66d4626137f2b /hw/pci/pcie_port.c | |
| parent | ba7d8515c1e929baccea9f53d06d131fd2b007a1 (diff) | |
| download | focaccia-qemu-45eb768c706d3a5fbe55224c589e8b4e252781d9.tar.gz focaccia-qemu-45eb768c706d3a5fbe55224c589e8b4e252781d9.zip | |
pci_bridge: factor out common code
Reuse common code in pcie_port, override the hardwired-to-0 bits per PCI Express spec. No functional change but makes the code easier to follow. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/pci/pcie_port.c')
| -rw-r--r-- | hw/pci/pcie_port.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/hw/pci/pcie_port.c b/hw/pci/pcie_port.c index 1be107b0c9..91b53a0fc2 100644 --- a/hw/pci/pcie_port.c +++ b/hw/pci/pcie_port.c @@ -27,15 +27,17 @@ 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 hardwired to 0. */ -#define PCI_BRIDGE_CTL_VGA_16BIT 0x10 /* VGA 16-bit decode */ - pci_set_word(d->wmask + PCI_BRIDGE_CONTROL, - PCI_BRIDGE_CTL_PARITY | - PCI_BRIDGE_CTL_ISA | - PCI_BRIDGE_CTL_VGA | - PCI_BRIDGE_CTL_VGA_16BIT | /* Req, but no alias support yet */ - PCI_BRIDGE_CTL_SERR | - PCI_BRIDGE_CTL_BUS_RESET); + /* + * Unlike conventional pci bridge, for some bits the spec states: + * Does not apply to PCI Express and must be hardwired to 0. + */ + pci_word_test_and_clear_mask(d->wmask + PCI_BRIDGE_CONTROL, + PCI_BRIDGE_CTL_MASTER_ABORT | + PCI_BRIDGE_CTL_FAST_BACK | + PCI_BRIDGE_CTL_DISCARD | + PCI_BRIDGE_CTL_SEC_DISCARD | + PCI_BRIDGE_CTL_DISCARD_STATUS | + PCI_BRIDGE_CTL_DISCARD_SERR); } /************************************************************************** |