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>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
index f46a97d..5e6b90c 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
@@ -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)