6.6-stable review patch. If anyone has any objections, please let me know.
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From: Tim Huang Tim.Huang@amd.com
commit 31729e8c21ecfd671458e02b6511eb68c2225113 upstream.
While doing multiple S4 stress tests, GC/RLC/PMFW get into an invalid state resulting into hard hangs.
Adding a GFX reset as workaround just before sending the MP1_UNLOAD message avoids this failure.
Signed-off-by: Tim Huang Tim.Huang@amd.com Acked-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Cc: Mario Limonciello superm1@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_4_ppt.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_4_ppt.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_4_ppt.c @@ -226,8 +226,18 @@ static int smu_v13_0_4_system_features_c struct amdgpu_device *adev = smu->adev; int ret = 0;
- if (!en && !adev->in_s0ix) + if (!en && !adev->in_s0ix) { + /* Adds a GFX reset as workaround just before sending the + * MP1_UNLOAD message to prevent GC/RLC/PMFW from entering + * an invalid state. + */ + ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_GfxDeviceDriverReset, + SMU_RESET_MODE_2, NULL); + if (ret) + return ret; + ret = smu_cmn_send_smc_msg(smu, SMU_MSG_PrepareMp1ForUnload, NULL); + }
return ret; }