[PATCH v3 4/8] drm/amd/amdgpu: remove unnecessary flush when enable gart

[Yunxiang Li]

From: Likun Gao <Likun.Gao at amd.com>

Remove hdp flush for gc v11/12 when enable gart.
Remove flush tlb for gc v10/11/12 when enable gart.
The flush is done for each GART mapping when it is created.

Signed-off-by: Likun Gao <Likun.Gao at amd.com>
Signed-off-by: Yunxiang Li <Yunxiang.Li at amd.com>
Reviewed-by: Christian König <christian.koenig at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c | 3 ---
 drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c | 3 ---
 drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c | 3 ---
 drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c | 3 ---
 drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c | 4 ----
 5 files changed, 16 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
index aba0a51be960..5740f94e3e44 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
@@ -4395,13 +4395,10 @@ static int gfx_v11_0_gfxhub_enable(struct amdgpu_device *adev)
 	if (r)
 		return r;
 
-	adev->hdp.funcs->flush_hdp(adev, NULL);
-
 	value = (amdgpu_vm_fault_stop == AMDGPU_VM_FAULT_STOP_ALWAYS) ?
 		false : true;
 
 	adev->gfxhub.funcs->set_fault_enable_default(adev, value);
-	amdgpu_gmc_flush_gpu_tlb(adev, 0, AMDGPU_GFXHUB(0), 0);
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
index 1ef9de41d193..5048b6eef9da 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
@@ -3207,13 +3207,10 @@ static int gfx_v12_0_gfxhub_enable(struct amdgpu_device *adev)
 	if (r)
 		return r;
 
-	adev->hdp.funcs->flush_hdp(adev, NULL);
-
 	value = (amdgpu_vm_fault_stop == AMDGPU_VM_FAULT_STOP_ALWAYS) ?
 		false : true;
 
 	adev->gfxhub.funcs->set_fault_enable_default(adev, value);
-	amdgpu_gmc_flush_gpu_tlb(adev, 0, AMDGPU_GFXHUB(0), 0);
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
index d933e19e0cf5..3e0ebe25a80f 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
@@ -974,9 +974,6 @@ static int gmc_v10_0_gart_enable(struct amdgpu_device *adev)
 	if (!adev->in_s0ix)
 		adev->gfxhub.funcs->set_fault_enable_default(adev, value);
 	adev->mmhub.funcs->set_fault_enable_default(adev, value);
-	gmc_v10_0_flush_gpu_tlb(adev, 0, AMDGPU_MMHUB0(0), 0);
-	if (!adev->in_s0ix)
-		gmc_v10_0_flush_gpu_tlb(adev, 0, AMDGPU_GFXHUB(0), 0);
 
 	DRM_INFO("PCIE GART of %uM enabled (table at 0x%016llX).\n",
 		 (unsigned int)(adev->gmc.gart_size >> 20),
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c
index 527dc917e049..cadbe55f0c8f 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c
@@ -891,9 +891,6 @@ static int gmc_v11_0_gart_enable(struct amdgpu_device *adev)
 	if (r)
 		return r;
 
-	/* Flush HDP after it is initialized */
-	adev->hdp.funcs->flush_hdp(adev, NULL);
-
 	value = (amdgpu_vm_fault_stop == AMDGPU_VM_FAULT_STOP_ALWAYS) ?
 		false : true;
 
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
index e2c6ec3cc4f3..a677aca69a06 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
@@ -861,14 +861,10 @@ static int gmc_v12_0_gart_enable(struct amdgpu_device *adev)
 	if (r)
 		return r;
 
-	/* Flush HDP after it is initialized */
-	adev->hdp.funcs->flush_hdp(adev, NULL);
-
 	value = (amdgpu_vm_fault_stop == AMDGPU_VM_FAULT_STOP_ALWAYS) ?
 		false : true;
 
 	adev->mmhub.funcs->set_fault_enable_default(adev, value);
-	gmc_v12_0_flush_gpu_tlb(adev, 0, AMDGPU_MMHUB0(0), 0);
 
 	dev_info(adev->dev, "PCIE GART of %uM enabled (table at 0x%016llX).\n",
 		 (unsigned)(adev->gmc.gart_size >> 20),
-- 
2.34.1