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drm/amdgpu: limit the GTT manager address space 

We should only cover the GART size with the GTT manager.

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>
This commit is contained in:
Christian König 2017-07-07 13:16:37 +02:00 committed by Alex Deucher
parent 6f02a69648
commit bb84284e10
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
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@ -42,6 +42,7 @@ struct amdgpu_gtt_mgr {
static int amdgpu_gtt_mgr_init(struct ttm_mem_type_manager *man,
unsigned long p_size)
{
struct amdgpu_device *adev = amdgpu_ttm_adev(man->bdev);
struct amdgpu_gtt_mgr *mgr;
uint64_t start, size;
@ -50,7 +51,7 @@ static int amdgpu_gtt_mgr_init(struct ttm_mem_type_manager *man,
return -ENOMEM;
start = AMDGPU_GTT_MAX_TRANSFER_SIZE * AMDGPU_GTT_NUM_TRANSFER_WINDOWS;
size = p_size - start;
size = (adev->mc.gart_size >> PAGE_SHIFT) - start;
drm_mm_init(&mgr->mm, start, size);
spin_lock_init(&mgr->lock);
mgr->available = p_size;
@ -112,6 +113,7 @@ int amdgpu_gtt_mgr_alloc(struct ttm_mem_type_manager *man,
const struct ttm_place *place,
struct ttm_mem_reg *mem)
{
struct amdgpu_device *adev = amdgpu_ttm_adev(man->bdev);
struct amdgpu_gtt_mgr *mgr = man->priv;
struct drm_mm_node *node = mem->mm_node;
enum drm_mm_insert_mode mode;
@ -129,7 +131,7 @@ int amdgpu_gtt_mgr_alloc(struct ttm_mem_type_manager *man,
if (place && place->lpfn)
lpfn = place->lpfn;
else
lpfn = man->size;
lpfn = adev->gart.num_cpu_pages;
mode = DRM_MM_INSERT_BEST;
if (place && place->flags & TTM_PL_FLAG_TOPDOWN)