drm/amdgpu: Enable/disable gfx PG feature in rlc safe mode

This is required by gfx hw and can fix the rlc hang when
do s3 stree test on Cz/St.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Hang Zhou <hang.zhou@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 10 insertions, 1 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index 9de940a65c80..56662d80602c 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -5660,6 +5660,11 @@ static int gfx_v8_0_set_powergating_state(void *handle,
         if (amdgpu_sriov_vf(adev))
                 return 0;
 
+        if (adev->pg_flags & (AMD_PG_SUPPORT_GFX_SMG |
+                                AMD_PG_SUPPORT_RLC_SMU_HS |
+                                AMD_PG_SUPPORT_CP |
+                                AMD_PG_SUPPORT_GFX_DMG))
+                adev->gfx.rlc.funcs->enter_safe_mode(adev);
         switch (adev->asic_type) {
         case CHIP_CARRIZO:
         case CHIP_STONEY:
@@ -5709,7 +5714,11 @@ static int gfx_v8_0_set_powergating_state(void *handle,
         default:
                 break;
         }
-
+        if (adev->pg_flags & (AMD_PG_SUPPORT_GFX_SMG |
+                                AMD_PG_SUPPORT_RLC_SMU_HS |
+                                AMD_PG_SUPPORT_CP |
+                                AMD_PG_SUPPORT_GFX_DMG))
+                adev->gfx.rlc.funcs->exit_safe_mode(adev);
         return 0;
 }