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| author | Jiange Zhao <Jiange.Zhao@amd.com> | 2020-11-25 16:56:05 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-12-15 19:35:35 +0300 |
| commit | 3aa883ac8eea38281f97a7409d2922e6f343bf6c (patch) | |
| tree | c0e49686259c2200413fc3750f899324320b7a02 /drivers/gpu/drm/amd/amdgpu/mxgpu_nv.h | |
| parent | 325f4b59f6361df0e20a39acd3b89c265d6ca2a8 (diff) | |
| download | linux-3aa883ac8eea38281f97a7409d2922e6f343bf6c.tar.xz | |
drm/amdgpu/SRIOV: Extend VF reset request wait period
In Virtualization case, when one VF is sending too many
FLR requests, hypervisor would stop responding to this
VF's request for a long period of time. This is called
event guard. During this period of cooling time, guest
driver should wait instead of doing other things. After
this period of time, guest driver would resume reset
process and return to normal.
Currently, guest driver would wait 12 seconds and return fail
if it doesn't get response from host.
Solution: extend this waiting time in guest driver and poll
response periodically. Poll happens every 6 seconds and it will
last for 60 seconds.
v2: change the max repetition times from number to macro.
Signed-off-by: Jiange Zhao <Jiange.Zhao@amd.com>
Acked-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/mxgpu_nv.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/mxgpu_nv.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.h b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.h index 52605e14a1a5..9f5808616174 100644 --- a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.h +++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.h @@ -27,6 +27,7 @@ #define NV_MAILBOX_POLL_ACK_TIMEDOUT 500 #define NV_MAILBOX_POLL_MSG_TIMEDOUT 6000 #define NV_MAILBOX_POLL_FLR_TIMEDOUT 5000 +#define NV_MAILBOX_POLL_MSG_REP_MAX 11 enum idh_request { IDH_REQ_GPU_INIT_ACCESS = 1, |