[PATCH 08/10] drm/amdgpu: distinct between allocated GART space and GMC addr

[felix.kuehling@xxxxxxx (Felix Kuehling)]

On 2018-08-27 12:53 PM, Christian König wrote:
> Most of the time we only need to know if the BO has a valid GMC addr.
>
> Signed-off-by: Christian König <christian.koenig at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_object.c |  2 --
>  drivers/gpu/drm/amd/amdgpu/amdgpu_object.h |  2 +-
>  drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c    | 13 +++++--------
>  3 files changed, 6 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> index 5ddd4e87480b..b5f20b42439e 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> @@ -1362,8 +1362,6 @@ void amdgpu_bo_fence(struct amdgpu_bo *bo, struct dma_fence *fence,
>  u64 amdgpu_bo_gpu_offset(struct amdgpu_bo *bo)
>  {
>  	WARN_ON_ONCE(bo->tbo.mem.mem_type == TTM_PL_SYSTEM);
> -	WARN_ON_ONCE(bo->tbo.mem.mem_type == TTM_PL_TT &&
> -		     !amdgpu_gtt_mgr_has_gart_addr(&bo->tbo.mem));
>  	WARN_ON_ONCE(!ww_mutex_is_locked(&bo->tbo.resv->lock) &&
>  		     !bo->pin_count);
>  	WARN_ON_ONCE(bo->tbo.mem.start == AMDGPU_BO_INVALID_OFFSET);
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
> index 18945dd6982d..37c79ae3574e 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
> @@ -200,7 +200,7 @@ static inline u64 amdgpu_bo_mmap_offset(struct amdgpu_bo *bo)
>  static inline bool amdgpu_bo_gpu_accessible(struct amdgpu_bo *bo)

As far as I can tell, this function is completely unused. So your change
here has no effect.

Other than that Acked-by: Felix Kuehling <Felix.Kuehling at amd.com>

Regards,
  Felix

>  {
>  	switch (bo->tbo.mem.mem_type) {
> -	case TTM_PL_TT: return amdgpu_gtt_mgr_has_gart_addr(&bo->tbo.mem);
> +	case TTM_PL_TT: return bo->tbo.mem.start != AMDGPU_BO_INVALID_OFFSET;
>  	case TTM_PL_VRAM: return true;
>  	default: return false;
>  	}
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> index 5cadf4f1ee2c..d9f3201c9e5c 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> @@ -345,7 +345,7 @@ static uint64_t amdgpu_mm_node_addr(struct ttm_buffer_object *bo,
>  {
>  	uint64_t addr = 0;
>  
> -	if (mem->mem_type != TTM_PL_TT || amdgpu_gtt_mgr_has_gart_addr(mem)) {
> +	if (mm_node->start != AMDGPU_BO_INVALID_OFFSET) {
>  		addr = mm_node->start << PAGE_SHIFT;
>  		addr += bo->bdev->man[mem->mem_type].gpu_offset;
>  	}
> @@ -433,8 +433,7 @@ int amdgpu_ttm_copy_mem_to_mem(struct amdgpu_device *adev,
>  		/* Map only what needs to be accessed. Map src to window 0 and
>  		 * dst to window 1
>  		 */
> -		if (src->mem->mem_type == TTM_PL_TT &&
> -		    !amdgpu_gtt_mgr_has_gart_addr(src->mem)) {
> +		if (src->mem->start == AMDGPU_BO_INVALID_OFFSET) {
>  			r = amdgpu_map_buffer(src->bo, src->mem,
>  					PFN_UP(cur_size + src_page_offset),
>  					src_node_start, 0, ring,
> @@ -447,8 +446,7 @@ int amdgpu_ttm_copy_mem_to_mem(struct amdgpu_device *adev,
>  			from += src_page_offset;
>  		}
>  
> -		if (dst->mem->mem_type == TTM_PL_TT &&
> -		    !amdgpu_gtt_mgr_has_gart_addr(dst->mem)) {
> +		if (dst->mem->start == AMDGPU_BO_INVALID_OFFSET) {
>  			r = amdgpu_map_buffer(dst->bo, dst->mem,
>  					PFN_UP(cur_size + dst_page_offset),
>  					dst_node_start, 1, ring,
> @@ -1086,11 +1084,10 @@ int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo)
>  	uint64_t flags;
>  	int r;
>  
> -	if (bo->mem.mem_type != TTM_PL_TT ||
> -	    amdgpu_gtt_mgr_has_gart_addr(&bo->mem))
> +	if (bo->mem.start != AMDGPU_BO_INVALID_OFFSET)
>  		return 0;
>  
> -	/* allocate GTT space */
> +	/* allocate GART space */
>  	tmp = bo->mem;
>  	tmp.mm_node = NULL;
>  	placement.num_placement = 1;