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hv: vpci: restore PCI BARs when doing AF FLR

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ACRN hypervisor should trap guest doing PCI AF FLR. Besides, it should save some status
before doing the FLR and restore them later, only BARs values for now.
This patch will trap guest Conventional PCI Advanced Features Control Register write
operation if the device supports Conventional PCI Advanced Features Capability and
check whether it wants to do device AF FLR. If it does, call pdev_do_flr to do the job.

Tracked-On: #3465
Signed-off-by: Li Fei1 <fei1.li@intel.com>
This commit is contained in:
Li Fei1
2019-12-19 23:29:50 +08:00
committed by wenlingz
parent a90e0f6c84
commit 1fddf943d8
5 changed files with 26 additions and 5 deletions
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3
hypervisor/include/dm/vpci.h
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@@ -102,6 +102,9 @@ struct pci_vdev {
bool has_flr;
uint32_t pcie_capoff;
bool has_af_flr;
uint32_t af_capoff;
/* Pointer to corresponding PCI device's vm_config */
struct acrn_vm_pci_dev_config *pci_dev_config;