drm/amdgpu: fulfill Navi gfx and pcie settings on umd pstate switching(V2)

Fulfill Navi gfx and pcie settings on umd pstate switching.

V2: temporarily skip the pcie ASPM setting considering the ASPM function
    is not fully enabled yet

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/nv.c b/drivers/gpu/drm/amd/amdgpu/nv.c
index 47bd79c..de0bf92 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/nv.c
+++ b/drivers/gpu/drm/amd/amdgpu/nv.c
@@ -742,6 +742,29 @@ static void nv_pre_asic_init(struct amdgpu_device *adev)
 {
 }
 
+static int nv_update_umd_stable_pstate(struct amdgpu_device *adev,
+                                      bool enter)
+{
+       if (enter)
+               amdgpu_gfx_rlc_enter_safe_mode(adev);
+       else
+               amdgpu_gfx_rlc_exit_safe_mode(adev);
+
+       if (adev->gfx.funcs->update_perfmon_mgcg)
+               adev->gfx.funcs->update_perfmon_mgcg(adev, !enter);
+
+       /*
+        * The ASPM function is not fully enabled and verified on
+        * Navi yet. Temporarily skip this until ASPM enabled.
+        */
+#if 0
+       if (adev->nbio.funcs->enable_aspm)
+               adev->nbio.funcs->enable_aspm(adev, !enter);
+#endif
+
+       return 0;
+}
+
 static const struct amdgpu_asic_funcs nv_asic_funcs =
 {
        .read_disabled_bios = &nv_read_disabled_bios,
@@ -762,6 +785,7 @@ static const struct amdgpu_asic_funcs nv_asic_funcs =
        .get_pcie_replay_count = &nv_get_pcie_replay_count,
        .supports_baco = &nv_asic_supports_baco,
        .pre_asic_init = &nv_pre_asic_init,
+       .update_umd_stable_pstate = &nv_update_umd_stable_pstate,
 };
 
 static int nv_common_early_init(void *handle)