Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit cc25188a authored by Christian König's avatar Christian König Committed by Alex Deucher
Browse files

drm/amdgpu: reserve the first 2x512 pages of GART 



We want to use them as remap address space.

Signed-off-by: default avatarChristian König <christian.koenig@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 606ce3c0

drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c

+4 −1
Original line number Diff line number Diff line
@@ -43,12 +43,15 @@ static int amdgpu_gtt_mgr_init(struct ttm_mem_type_manager *man, 
			       unsigned long p_size)

{

	struct amdgpu_gtt_mgr *mgr;

	uint64_t start, size;



	mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);

	if (!mgr)

		return -ENOMEM;



	drm_mm_init(&mgr->mm, 0, p_size);

	start = AMDGPU_GTT_MAX_TRANSFER_SIZE * AMDGPU_GTT_NUM_TRANSFER_WINDOWS;

	size = p_size - start;

	drm_mm_init(&mgr->mm, start, size);

	spin_lock_init(&mgr->lock);

	mgr->available = p_size;

	man->priv = mgr;

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h

+3 −0
Original line number Diff line number Diff line
@@ -34,6 +34,9 @@ 
#define AMDGPU_PL_FLAG_GWS		(TTM_PL_FLAG_PRIV << 1)

#define AMDGPU_PL_FLAG_OA		(TTM_PL_FLAG_PRIV << 2)



#define AMDGPU_GTT_MAX_TRANSFER_SIZE	512

#define AMDGPU_GTT_NUM_TRANSFER_WINDOWS	2



struct amdgpu_mman {

	struct ttm_bo_global_ref        bo_global_ref;

	struct drm_global_reference	mem_global_ref;