[PATCH 2/2] drm/amd/powerplay: enable SW SMU power profile switch support in KFD

[Evan Quan]

Hook up the SW SMU power profile switch in KFD routine.

Change-Id: I41e53762cdc7504285de89f30e3e6e2bb396b953
Signed-off-by: Evan Quan <evan.quan at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c    |  8 +++--
 drivers/gpu/drm/amd/powerplay/amdgpu_smu.c    | 36 +++++++++++++++++++
 .../gpu/drm/amd/powerplay/inc/amdgpu_smu.h    |  3 ++
 3 files changed, 45 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
index 43b11879713d..9c5dcaa8fa48 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
@@ -672,8 +672,12 @@ void amdgpu_amdkfd_set_compute_idle(struct kgd_dev *kgd, bool idle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 
-	if (adev->powerplay.pp_funcs &&
-	    adev->powerplay.pp_funcs->switch_power_profile)
+	if (is_support_sw_smu(adev))
+		smu_switch_power_profile(&adev->smu,
+					 PP_SMC_POWER_PROFILE_COMPUTE,
+					 !idle);
+	else if (adev->powerplay.pp_funcs &&
+		 adev->powerplay.pp_funcs->switch_power_profile)
 		amdgpu_dpm_switch_power_profile(adev,
 						PP_SMC_POWER_PROFILE_COMPUTE,
 						!idle);
diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index d99a8aa0defb..55ccb4e6a6fb 100644
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -1447,6 +1447,42 @@ int smu_handle_task(struct smu_context *smu,
 	return ret;
 }
 
+int smu_switch_power_profile(struct smu_context *smu,
+			     enum PP_SMC_POWER_PROFILE type,
+			     bool en)
+{
+	struct smu_dpm_context *smu_dpm_ctx = &(smu->smu_dpm);
+	long workload;
+	uint32_t index;
+
+	if (!smu->pm_enabled)
+		return -EINVAL;
+
+	if (!(type < PP_SMC_POWER_PROFILE_CUSTOM))
+		return -EINVAL;
+
+	mutex_lock(&smu->mutex);
+
+	if (!en) {
+		smu->workload_mask &= ~(1 << smu->workload_prority[type]);
+		index = fls(smu->workload_mask);
+		index = index > 0 && index <= WORKLOAD_POLICY_MAX ? index - 1 : 0;
+		workload = smu->workload_setting[index];
+	} else {
+		smu->workload_mask |= (1 << smu->workload_prority[type]);
+		index = fls(smu->workload_mask);
+		index = index <= WORKLOAD_POLICY_MAX ? index - 1 : 0;
+		workload = smu->workload_setting[index];
+	}
+
+	if (smu_dpm_ctx->dpm_level != AMD_DPM_FORCED_LEVEL_MANUAL)
+		smu_set_power_profile_mode(smu, &workload, 0);
+
+	mutex_unlock(&smu->mutex);
+
+	return 0;
+}
+
 enum amd_dpm_forced_level smu_get_performance_level(struct smu_context *smu)
 {
 	struct smu_dpm_context *smu_dpm_ctx = &(smu->smu_dpm);
diff --git a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
index 9c0a53ef93c4..1b44414cec3b 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
@@ -973,6 +973,9 @@ extern int smu_dpm_set_power_gate(struct smu_context *smu,uint32_t block_type, b
 extern int smu_handle_task(struct smu_context *smu,
 			   enum amd_dpm_forced_level level,
 			   enum amd_pp_task task_id);
+int smu_switch_power_profile(struct smu_context *smu,
+			     enum PP_SMC_POWER_PROFILE type,
+			     bool en);
 int smu_get_smc_version(struct smu_context *smu, uint32_t *if_version, uint32_t *smu_version);
 int smu_get_dpm_freq_by_index(struct smu_context *smu, enum smu_clk_type clk_type,
 			      uint16_t level, uint32_t *value);
-- 
2.22.0