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hv: add max payload to vrp

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It seems important that passthru device's max payload settings match
the settings on the native device otherwise passthru device may not work.
So we have to set vrp's max payload capacity as native root port
otherwise we may accidentally change passthru device's max payload
since during guest OS's pci device enumeration, pass-thru device will
renegotiate its max payload's setting with vrp.

Tracked-On: #5915

Signed-off-by: Rong Liu <rong.l.liu@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
This commit is contained in:
Rong Liu
2021-06-10 06:28:04 +00:00
committed by wenlingz
parent 48c5fc5124
commit 321e560968
4 changed files with 28 additions and 2 deletions
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1
hypervisor/include/hw/pci.h
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@@ -185,6 +185,7 @@
#define PCIY_PCIE 0x10U
#define PCIR_PCIE_DEVCAP 0x04U
#define PCIR_PCIE_DEVCTRL 0x08U
#define PCIM_PCIE_DEV_CTRL_MAX_PAYLOAD 0x00E0U
#define PCIM_PCIE_FLRCAP (0x1U << 28U)
#define PCIM_PCIE_FLR (0x1U << 15U)