diff options
Diffstat (limited to 'hw/isa/piix3.c')
-rw-r--r-- | hw/isa/piix3.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/hw/isa/piix3.c b/hw/isa/piix3.c index 6388558f92..48f9ab1096 100644 --- a/hw/isa/piix3.c +++ b/hw/isa/piix3.c @@ -138,7 +138,20 @@ static void piix3_write_config(PCIDevice *dev, static void piix3_write_config_xen(PCIDevice *dev, uint32_t address, uint32_t val, int len) { - xen_piix_pci_write_config_client(address, val, len); + int i; + + /* Scan for updates to PCI link routes (0x60-0x63). */ + for (i = 0; i < len; i++) { + uint8_t v = (val >> (8 * i)) & 0xff; + if (v & 0x80) { + v = 0; + } + v &= 0xf; + if (((address + i) >= PIIX_PIRQCA) && ((address + i) <= PIIX_PIRQCD)) { + xen_set_pci_link_route(address + i - PIIX_PIRQCA, v); + } + } + piix3_write_config(dev, address, val, len); } |