diff options
| author | Christian König <christian.koenig@amd.com> | 2017-06-28 12:18:54 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-07-14 11:06:20 -0400 |
| commit | cc25188afdb886044785be4c29f3993c3a3b2b92 (patch) | |
| tree | c536c9741fb63232e88e906414c1b70b86667e95 /drivers/gpu/drm/amd | |
| parent | 606ce3c098b19cd5458930a133ef1577c64b1072 (diff) | |
drm/amdgpu: reserve the first 2x512 pages of GART
We want to use them as remap address space.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c | 5 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 3 |
2 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c index 1ef625550442..f46a97d91675 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 776a20ae40c4..c8059f067185 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; |