drm/amdgpu:cg & pg shouldn't active on VF device

CG & PG function changes engine clock/gating, which is
not appropriate for VF device, because one vf doesn't know
the whole picture of engine's overall workload.

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

4 files changed, 27 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index 67afc901905c..e0a96ca583a4 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -5841,6 +5841,9 @@ static int gfx_v8_0_set_powergating_state(void *handle,
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 	bool enable = (state == AMD_PG_STATE_GATE) ? true : false;
 
+	if (amdgpu_sriov_vf(adev))
+		return 0;
+
 	switch (adev->asic_type) {
 	case CHIP_CARRIZO:
 	case CHIP_STONEY:
@@ -5898,6 +5901,9 @@ static void gfx_v8_0_get_clockgating_state(void *handle, u32 *flags)
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 	int data;
 
+	if (amdgpu_sriov_vf(adev))
+		*flags = 0;
+
 	/* AMD_CG_SUPPORT_GFX_MGCG */
 	data = RREG32(mmRLC_CGTT_MGCG_OVERRIDE);
 	if (!(data & RLC_CGTT_MGCG_OVERRIDE__CPF_MASK))
@@ -6411,6 +6417,9 @@ static int gfx_v8_0_set_clockgating_state(void *handle,
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
+	if (amdgpu_sriov_vf(adev))
+		return 0;
+
 	switch (adev->asic_type) {
 	case CHIP_FIJI:
 	case CHIP_CARRIZO:
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
index 65025080a4b8..8c9e7307853f 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
@@ -1434,6 +1434,9 @@ static int gmc_v8_0_set_clockgating_state(void *handle,
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
+	if (amdgpu_sriov_vf(adev))
+		return 0;
+
 	switch (adev->asic_type) {
 	case CHIP_FIJI:
 		fiji_update_mc_medium_grain_clock_gating(adev,
@@ -1458,6 +1461,9 @@ static void gmc_v8_0_get_clockgating_state(void *handle, u32 *flags)
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 	int data;
 
+	if (amdgpu_sriov_vf(adev))
+		*flags = 0;
+
 	/* AMD_CG_SUPPORT_MC_MGCG */
 	data = RREG32(mmMC_HUB_MISC_HUB_CG);
 	if (data & MC_HUB_MISC_HUB_CG__ENABLE_MASK)
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
index 011800f621c6..47e6f146aa25 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
@@ -1512,6 +1512,9 @@ static int sdma_v3_0_set_clockgating_state(void *handle,
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
+	if (amdgpu_sriov_vf(adev))
+		return 0;
+
 	switch (adev->asic_type) {
 	case CHIP_FIJI:
 	case CHIP_CARRIZO:
@@ -1538,6 +1541,9 @@ static void sdma_v3_0_get_clockgating_state(void *handle, u32 *flags)
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 	int data;
 
+	if (amdgpu_sriov_vf(adev))
+		*flags = 0;
+
 	/* AMD_CG_SUPPORT_SDMA_MGCG */
 	data = RREG32(mmSDMA0_CLK_CTRL + sdma_offsets[0]);
 	if (!(data & SDMA0_CLK_CTRL__SOFT_OVERRIDE0_MASK))
diff --git a/drivers/gpu/drm/amd/amdgpu/vi.c b/drivers/gpu/drm/amd/amdgpu/vi.c
index 4a785d6acfb9..7fa314c217c9 100644
--- a/drivers/gpu/drm/amd/amdgpu/vi.c
+++ b/drivers/gpu/drm/amd/amdgpu/vi.c
@@ -1391,6 +1391,9 @@ static int vi_common_set_clockgating_state(void *handle,
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
+	if (amdgpu_sriov_vf(adev))
+		return 0;
+
 	switch (adev->asic_type) {
 	case CHIP_FIJI:
 		vi_update_bif_medium_grain_light_sleep(adev,
@@ -1435,6 +1438,9 @@ static void vi_common_get_clockgating_state(void *handle, u32 *flags)
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 	int data;
 
+	if (amdgpu_sriov_vf(adev))
+		*flags = 0;
+
 	/* AMD_CG_SUPPORT_BIF_LS */
 	data = RREG32_PCIE(ixPCIE_CNTL2);
 	if (data & PCIE_CNTL2__SLV_MEM_LS_EN_MASK)