[PATCH 1/3] drm/amdgpu: set snooped flags only on system addresses

[PATCH 1/3] drm/amdgpu: set snooped flags only on system addresses

[Christian König]

From: Christian König <christian.koenig@amd.com>

Not necessary for VRAM.

Signed-off-by: Christian König <christian.koenig@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 8051cb9..298fb10 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -801,11 +801,12 @@ uint32_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm,
 	if (mem && mem->mem_type != TTM_PL_SYSTEM)
 		flags |= AMDGPU_PTE_VALID;
 
-	if (mem && mem->mem_type == TTM_PL_TT)
+	if (mem && mem->mem_type == TTM_PL_TT) {
 		flags |= AMDGPU_PTE_SYSTEM;
 
-	if (!ttm || ttm->caching_state == tt_cached)
-		flags |= AMDGPU_PTE_SNOOPED;
+		if (!ttm || ttm->caching_state == tt_cached)
+			flags |= AMDGPU_PTE_SNOOPED;
+	}
 
 	if (adev->asic_type >= CHIP_TOPAZ)
 		flags |= AMDGPU_PTE_EXECUTABLE;
-- 
2.5.0

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[PATCH 2/3] drm/amdgpu: take a BO reference in the dispaly code

[Christian König]

From: Christian König <christian.koenig@amd.com>

No need for the GEM reference here.

Signed-off-by: Christian König <christian.koenig@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index e173a5a..ddd7233 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -109,7 +109,7 @@ static void amdgpu_unpin_work_func(struct work_struct *__work)
 	} else
 		DRM_ERROR("failed to reserve buffer after flip\n");
 
-	drm_gem_object_unreference_unlocked(&work->old_rbo->gem_base);
+	amdgpu_bo_unref(&work->old_rbo);
 	kfree(work->shared);
 	kfree(work);
 }
@@ -148,8 +148,8 @@ int amdgpu_crtc_page_flip(struct drm_crtc *crtc,
 	obj = old_amdgpu_fb->obj;
 
 	/* take a reference to the old object */
-	drm_gem_object_reference(obj);
 	work->old_rbo = gem_to_amdgpu_bo(obj);
+	amdgpu_bo_ref(work->old_rbo);
 
 	new_amdgpu_fb = to_amdgpu_framebuffer(fb);
 	obj = new_amdgpu_fb->obj;
@@ -222,7 +222,7 @@ pflip_cleanup:
 	amdgpu_bo_unreserve(new_rbo);
 
 cleanup:
-	drm_gem_object_unreference_unlocked(&work->old_rbo->gem_base);
+	amdgpu_bo_unref(&work->old_rbo);
 	fence_put(work->excl);
 	for (i = 0; i < work->shared_count; ++i)
 		fence_put(work->shared[i]);
-- 
2.5.0

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[PATCH 3/3] drm/amdgpu: take a BO reference for the user fence

[Christian König]

From: Christian König <christian.koenig@amd.com>

No need for a GEM reference here.

Signed-off-by: Christian König <christian.koenig@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 1d44d50..4f352ec 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -222,6 +222,8 @@ int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, void *data)
 				}
 
 				p->uf.bo = gem_to_amdgpu_bo(gobj);
+				amdgpu_bo_ref(p->uf.bo);
+				drm_gem_object_unreference_unlocked(gobj);
 				p->uf.offset = fence_data->offset;
 			} else {
 				ret = -EINVAL;
@@ -487,7 +489,7 @@ static void amdgpu_cs_parser_fini(struct amdgpu_cs_parser *parser, int error, bo
 			amdgpu_ib_free(parser->adev, &parser->ibs[i]);
 	kfree(parser->ibs);
 	if (parser->uf.bo)
-		drm_gem_object_unreference_unlocked(&parser->uf.bo->gem_base);
+		amdgpu_bo_unref(&parser->uf.bo);
 }
 
 static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p,
@@ -776,7 +778,7 @@ static int amdgpu_cs_free_job(struct amdgpu_job *job)
 			amdgpu_ib_free(job->adev, &job->ibs[i]);
 	kfree(job->ibs);
 	if (job->uf.bo)
-		drm_gem_object_unreference_unlocked(&job->uf.bo->gem_base);
+		amdgpu_bo_unref(&job->uf.bo);
 	return 0;
 }
 
-- 
2.5.0

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Re: [PATCH 1/3] drm/amdgpu: set snooped flags only on system addresses

[Michel Dänzer]

On 04.12.2015 03:55, Christian König wrote:
> From: Christian König <christian.koenig@amd.com>
> 
> Not necessary for VRAM.
> 
> Signed-off-by: Christian König <christian.koenig@amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> index 8051cb9..298fb10 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> @@ -801,11 +801,12 @@ uint32_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm,
>  	if (mem && mem->mem_type != TTM_PL_SYSTEM)
>  		flags |= AMDGPU_PTE_VALID;
>  
> -	if (mem && mem->mem_type == TTM_PL_TT)
> +	if (mem && mem->mem_type == TTM_PL_TT) {
>  		flags |= AMDGPU_PTE_SYSTEM;
>  
> -	if (!ttm || ttm->caching_state == tt_cached)
> -		flags |= AMDGPU_PTE_SNOOPED;
> +		if (!ttm || ttm->caching_state == tt_cached)
> +			flags |= AMDGPU_PTE_SNOOPED;
> +	}

Can ttm be NULL here if mem->mem_type == TTM_PL_TT?


Patches 2 & 3 are

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer
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Re: [PATCH 1/3] drm/amdgpu: set snooped flags only on system addresses

[Christian König]

On 04.12.2015 03:50, Michel Dänzer wrote:
> On 04.12.2015 03:55, Christian König wrote:
>> From: Christian König <christian.koenig@amd.com>
>>
>> Not necessary for VRAM.
>>
>> Signed-off-by: Christian König <christian.koenig@amd.com>
>> ---
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 7 ++++---
>>   1 file changed, 4 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
>> index 8051cb9..298fb10 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
>> @@ -801,11 +801,12 @@ uint32_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm,
>>   	if (mem && mem->mem_type != TTM_PL_SYSTEM)
>>   		flags |= AMDGPU_PTE_VALID;
>>   
>> -	if (mem && mem->mem_type == TTM_PL_TT)
>> +	if (mem && mem->mem_type == TTM_PL_TT) {
>>   		flags |= AMDGPU_PTE_SYSTEM;
>>   
>> -	if (!ttm || ttm->caching_state == tt_cached)
>> -		flags |= AMDGPU_PTE_SNOOPED;
>> +		if (!ttm || ttm->caching_state == tt_cached)
>> +			flags |= AMDGPU_PTE_SNOOPED;
>> +	}
> Can ttm be NULL here if mem->mem_type == TTM_PL_TT?

Good point, I think the answer is no. Update patch is on it's way to the 
list.

Christian.

>
>
> Patches 2 & 3 are
>
> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
>
>

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