From: Christian König <[email protected]> We want to use them as remap address space.
Signed-off-by: Christian König <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c | 5 ++++- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 3 +++ 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c index 6fdf83a..a0976dc 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c @@ -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; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h index 2ade5c5..9c4da0a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h @@ -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; -- 2.7.4 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
