[PATCH 107/138] drm/amd/powerplay: add golden dpm table to backup default DPM table

[Huang Rui <ray.huang@xxxxxxx>]

From: Likun Gao <Likun.Gao@xxxxxxx>

Backup default DPM table into golden dpm table.

Signed-off-by: Likun Gao <Likun.Gao@xxxxxxx>
Reviewed-by: Kevin Wang <kevin1.wang@xxxxxxx>
Reviewed-by: Evan Quan <evan.quan@xxxxxxx>
---
 drivers/gpu/drm/amd/powerplay/amdgpu_smu.c     | 11 +++++++++++
 drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h |  3 ++-
 drivers/gpu/drm/amd/powerplay/vega20_ppt.c     | 14 ++++++++++++++
 3 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index f4b6ae2..2e3e084 100644
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -671,11 +671,22 @@ static int smu_hw_fini(void *handle)
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 	struct smu_context *smu = &adev->smu;
 	struct smu_table_context *table_context = &smu->smu_table;
+	struct smu_dpm_context *smu_dpm = &smu->smu_dpm;
 	int ret = 0;
 
 	if (!is_support_sw_smu(adev))
 		return -EINVAL;
 
+	if (smu_dpm->dpm_context) {
+		kfree(smu_dpm->dpm_context);
+		smu_dpm->dpm_context = NULL;
+	}
+
+	if (smu_dpm->golden_dpm_context) {
+		kfree(smu_dpm->golden_dpm_context);
+		smu_dpm->golden_dpm_context = NULL;
+	}
+
 	if (table_context->driver_pptable) {
 		kfree(table_context->driver_pptable);
 		table_context->driver_pptable = NULL;
diff --git a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
index ef8e301..3ef752f 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
@@ -201,8 +201,9 @@ struct smu_table_context
 };
 
 struct smu_dpm_context {
-	void *dpm_context;
 	uint32_t dpm_context_size;
+	void *dpm_context;
+	void *golden_dpm_context;
 };
 
 struct smu_power_context {
diff --git a/drivers/gpu/drm/amd/powerplay/vega20_ppt.c b/drivers/gpu/drm/amd/powerplay/vega20_ppt.c
index c398899..aa7f41a 100644
--- a/drivers/gpu/drm/amd/powerplay/vega20_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/vega20_ppt.c
@@ -136,11 +136,22 @@ static int vega20_allocate_dpm_context(struct smu_context *smu)
 {
 	struct smu_dpm_context *smu_dpm = &smu->smu_dpm;
 
+	if (smu_dpm->dpm_context)
+		return -EINVAL;
+
 	smu_dpm->dpm_context = kzalloc(sizeof(struct vega20_dpm_table),
 				       GFP_KERNEL);
 	if (!smu_dpm->dpm_context)
 		return -ENOMEM;
 
+	if (smu_dpm->golden_dpm_context)
+		return -EINVAL;
+
+	smu_dpm->golden_dpm_context = kzalloc(sizeof(struct vega20_dpm_table),
+					      GFP_KERNEL);
+	if (!smu_dpm->golden_dpm_context)
+		return -ENOMEM;
+
 	smu_dpm->dpm_context_size = sizeof(struct vega20_dpm_table);
 
 	return 0;
@@ -610,6 +621,9 @@ static int vega20_set_default_dpm_table(struct smu_context *smu)
 	}
 	vega20_init_single_dpm_state(&(single_dpm_table->dpm_state));
 
+	memcpy(smu_dpm->golden_dpm_context, dpm_table,
+	       sizeof(struct vega20_dpm_table));
+
 	return 0;
 }
 
-- 
2.7.4

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