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ACRN/DM: Initialize the igd_lpc bridge to ISA_BRIDGE to make Linux guest happy

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Currently the class type of igd_lpc bridge PCI device is not initialized.
In such case the guest driver doesn't detect the platform correctly when it
is in GVT-d mode. Then the linux i915 driver can't work.

Tracked-On: #4745
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
This commit is contained in:
Zhao Yakui 2020-04-29 16:56:23 +08:00 committed by wenlingz
parent 7147979382
commit 67728c6761
1 changed files with 2 additions and 0 deletions
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2
devicemodel/hw/pci/lpc.c
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@ -501,6 +501,8 @@ pci_igd_lpc_init(struct vmctx *ctx, struct pci_vdev *pi, char *opts)
pci_set_cfgdata16(pi, PCIR_SUBVEND_0, (host_config[0x01] << 8) | host_config[0x00]);
pci_set_cfgdata16(pi, PCIR_SUBDEV_0, (host_config[0x03] << 8) | host_config[0x02]);
pci_set_cfgdata8(pi, PCIR_CLASS, PCIC_BRIDGE);
pci_set_cfgdata8(pi, PCIR_SUBCLASS, PCIS_BRIDGE_ISA);
return 0;
}