- After a full reset, VF's FB will be cleaned. This
includes the VCN's fw_shared memory.
However, there is no suspend-resume routine for
SRIOV VF. Therefore, the data in the fw_shared
memory will be lost forever and it causes engine
hang later on.
We must repopulate the data in fw_shared during
SRIOV hw_init
Signed-off-by: Bokun Zhang <bokun.zh...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
b/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
index 54b03df63a51..b71590b67e20 100644
--- a/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
@@ -1280,6 +1280,9 @@ static int vcn_v4_0_start_sriov(struct amdgpu_device
*adev)
if (adev->vcn.harvest_config & (1 << i))
continue;
+ // Must re/init fw_shared at beginning
+ vcn_v4_0_fw_shared_init(adev, i);
+
table_size = 0;
MMSCH_V4_0_INSERT_DIRECT_RD_MOD_WT(SOC15_REG_OFFSET(VCN, i,
--
2.34.1
