drm/amdgpu: support dpm level modification under virtualization v3

Under vega10 virtualuzation, smu ip block will not be added.
Therefore, we need add pp clk query and force dpm level function
at amdgpu_virt_ops to support the feature.

v2: add get_pp_clk existence check and use kzalloc to allocate buf

v3: return -ENOMEM for allocation failure and correct the coding style

Signed-off-by: Yintian Tao <yttao@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
index 88362019d1dd..4b7a076eea9c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
@@ -327,6 +327,18 @@ static ssize_t amdgpu_set_dpm_forced_performance_level(struct device *dev,
                 goto fail;
         }
 
+        if (amdgpu_sriov_vf(adev)) {
+                if (amdgim_is_hwperf(adev) &&
+                    adev->virt.ops->force_dpm_level) {
+                        mutex_lock(&adev->pm.mutex);
+                        adev->virt.ops->force_dpm_level(adev, level);
+                        mutex_unlock(&adev->pm.mutex);
+                        return count;
+                } else {
+                        return -EINVAL;
+                }
+        }
+
         if (current_level == level)
                 return count;
 
@@ -790,6 +802,10 @@ static ssize_t amdgpu_get_pp_dpm_sclk(struct device *dev,
         struct drm_device *ddev = dev_get_drvdata(dev);
         struct amdgpu_device *adev = ddev->dev_private;
 
+        if (amdgpu_sriov_vf(adev) && amdgim_is_hwperf(adev) &&
+            adev->virt.ops->get_pp_clk)
+                return adev->virt.ops->get_pp_clk(adev, PP_SCLK, buf);
+
         if (is_support_sw_smu(adev))
                 return smu_print_clk_levels(&adev->smu, PP_SCLK, buf);
         else if (adev->powerplay.pp_funcs->print_clock_levels)