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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>
Reviewed-by: Binbin Wu <binbin.wu@intel.com>
This commit is contained in:
Zhao Yakui 2020-04-29 16:56:23 +08:00 committed by wenlingz
parent bca83efee8
commit 6c02a8d5ed
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, *(uint16_t *)(host_config + PCIR_SUBVEND_0));
pci_set_cfgdata16(pi, PCIR_SUBDEV_0, *(uint16_t *)(host_config + PCIR_SUBDEV_0));
pci_set_cfgdata8(pi, PCIR_CLASS, PCIC_BRIDGE);
pci_set_cfgdata8(pi, PCIR_SUBCLASS, PCIS_BRIDGE_ISA);
return 0;
}