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hv: vpci: handle the quirk part for pass through pci device cfg access in dm

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There're some PCI devices need special handler for vendor-specical feature or
capability CFG access. The Intel GPU is one of them. In order to keep the ACRN-HV
clean, we want to throw the qurik part of PCI CFG asccess to DM to handle.

To achieve this, we implement per-device policy base on whether it needs quirk handler
for a VM: each device could configure as "quirk pass through device" or not. For a
"quirk pass through device", we will handle the general part in HV and the quirk part
in DM. For a non "quirk pass through device",  we will handle all the part in HV.

Tracked-On: #4371
Signed-off-by: Li Fei1 <fei1.li@intel.com>
This commit is contained in:
Li Fei1
2020-03-13 11:44:51 +08:00
committed by wenlingz
parent e5c7a96513
commit e99ddf28c3
7 changed files with 75 additions and 36 deletions
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5
hypervisor/dm/vpci/vpci_priv.h
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@@ -32,6 +32,11 @@
#include <pci.h>
static inline bool is_quirk_ptdev(const struct pci_vdev *vdev)
{
return ((vdev->flags & QUIRK_PTDEV) != 0U);
}
static inline bool in_range(uint32_t value, uint32_t lower, uint32_t len)
{
return ((value >= lower) && (value < (lower + len)));