From: Monk Liu <Monk.Liu@amd.com>
Date: Thu, 5 Mar 2020 13:17:47 +0000 (+0800)
Subject: drm/amdgpu: disable clock/power gating for SRIOV
X-Git-Tag: libata-5.7-2020-04-09~30^2~14^2~30
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=cc9f2fba37e5f64b84fe0bf49f7988124cf38d76;p=linux-block.git

drm/amdgpu: disable clock/power gating for SRIOV

and disable MC resum in VCN2.0 as well
those are not concerned by VF driver

Singed-off-by: darlington Opara <darlington.opara@amd.com>
Signed-off-by: Jinage Zhao <jiange.zhao@amd.com>
Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Acked-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c b/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c
index dd500d1064a8..f2745fd1ddb3 100644
--- a/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c
@@ -320,6 +320,9 @@ static void vcn_v2_0_mc_resume(struct amdgpu_device *adev)
 	uint32_t size = AMDGPU_GPU_PAGE_ALIGN(adev->vcn.fw->size + 4);
 	uint32_t offset;
 
+	if (amdgpu_sriov_vf(adev))
+		return;
+
 	/* cache window 0: fw */
 	if (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) {
 		WREG32_SOC15(UVD, 0, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_LOW,
@@ -464,6 +467,9 @@ static void vcn_v2_0_disable_clock_gating(struct amdgpu_device *adev)
 {
 	uint32_t data;
 
+	if (amdgpu_sriov_vf(adev))
+		return;
+
 	/* UVD disable CGC */
 	data = RREG32_SOC15(VCN, 0, mmUVD_CGC_CTRL);
 	if (adev->cg_flags & AMD_CG_SUPPORT_VCN_MGCG)
@@ -622,6 +628,9 @@ static void vcn_v2_0_enable_clock_gating(struct amdgpu_device *adev)
 {
 	uint32_t data = 0;
 
+	if (amdgpu_sriov_vf(adev))
+		return;
+
 	/* enable UVD CGC */
 	data = RREG32_SOC15(VCN, 0, mmUVD_CGC_CTRL);
 	if (adev->cg_flags & AMD_CG_SUPPORT_VCN_MGCG)
@@ -674,6 +683,9 @@ static void vcn_v2_0_disable_static_power_gating(struct amdgpu_device *adev)
 	uint32_t data = 0;
 	int ret;
 
+	if (amdgpu_sriov_vf(adev))
+		return;
+
 	if (adev->pg_flags & AMD_PG_SUPPORT_VCN) {
 		data = (1 << UVD_PGFSM_CONFIG__UVDM_PWR_CONFIG__SHIFT
 			| 1 << UVD_PGFSM_CONFIG__UVDU_PWR_CONFIG__SHIFT
@@ -721,6 +733,9 @@ static void vcn_v2_0_enable_static_power_gating(struct amdgpu_device *adev)
 	uint32_t data = 0;
 	int ret;
 
+	if (amdgpu_sriov_vf(adev))
+		return;
+
 	if (adev->pg_flags & AMD_PG_SUPPORT_VCN) {
 		/* Before power off, this indicator has to be turned on */
 		data = RREG32_SOC15(VCN, 0, mmUVD_POWER_STATUS);
@@ -1231,6 +1246,9 @@ static int vcn_v2_0_set_clockgating_state(void *handle,
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 	bool enable = (state == AMD_CG_STATE_GATE);
 
+	if (amdgpu_sriov_vf(adev))
+		return 0;
+
 	if (enable) {
 		/* wait for STATUS to clear */
 		if (vcn_v2_0_is_idle(handle))
@@ -1686,6 +1704,11 @@ static int vcn_v2_0_set_powergating_state(void *handle,
 	int ret;
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
+	if (amdgpu_sriov_vf(adev)) {
+		adev->vcn.cur_state = AMD_PG_STATE_UNGATE;
+		return 0;
+	}
+
 	if (state == adev->vcn.cur_state)
 		return 0;