[vfio-users] about vfio IGD host bridge
fulaiyang
fulaiyang at 163.com
Fri Mar 29 02:52:10 UTC 2019
Hi Alex:
In the 'vfio_pci_igd_host_init' func,we should stuff a few values into the host bridge such as BDSM、GMCH.
And the resgister offset in the host bridge is defined in ‘the igd_host_bridge_infos’ structure. But I confuse that
the offset is different from the 8th intel processor datasheet. I wonder if it is a problem? Thanks.
qemu/hw/pci-host/piix.c
static const IGDHostInfo igd_host_bridge_infos[] = {
{0x08, 2}, /* revision id */
{0x2c, 2}, /* sybsystem vendor id */
{0x2e, 2}, /* sybsystem id */
{0x50, 2}, /* SNB: processor graphics control register */
{0x52, 2}, /* processor graphics control register */
{0xa4, 4}, /* SNB: graphics base of stolen memory */
{0xa8, 4}, /* SNB: base of GTT stolen memory */
};
8th-gen-core-family-datasheet-vol-2
fulaiyang
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