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drm/amdgpu: add support for BO_VAs without BO v2 

For PRT support we need mappings which aren't backed by any memory.

v2: fix parameter checking

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2017-01-30 11:01:38 +01:00 committed by Alex Deucher
parent e4f0fdcc9c
commit a5f6b5b1e8
1 changed files with 14 additions and 6 deletions
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20
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
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@ -1117,7 +1117,7 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev,
struct dma_fence *exclusive;
int r;
if (clear) {
if (clear || !bo_va->bo) {
mem = NULL;
nodes = NULL;
exclusive = NULL;
@ -1134,9 +1134,15 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev,
exclusive = reservation_object_get_excl(bo_va->bo->tbo.resv);
}
flags = amdgpu_ttm_tt_pte_flags(adev, bo_va->bo->tbo.ttm, mem);
gtt_flags = (amdgpu_ttm_is_bound(bo_va->bo->tbo.ttm) &&
adev == amdgpu_ttm_adev(bo_va->bo->tbo.bdev)) ? flags : 0;
if (bo_va->bo) {
flags = amdgpu_ttm_tt_pte_flags(adev, bo_va->bo->tbo.ttm, mem);
gtt_flags = (amdgpu_ttm_is_bound(bo_va->bo->tbo.ttm) &&
adev == amdgpu_ttm_adev(bo_va->bo->tbo.bdev)) ?
flags : 0;
} else {
flags = 0x0;
gtt_flags = ~0x0;
}
spin_lock(&vm->status_lock);
if (!list_empty(&bo_va->vm_status))
@ -1271,7 +1277,8 @@ struct amdgpu_bo_va *amdgpu_vm_bo_add(struct amdgpu_device *adev,
INIT_LIST_HEAD(&bo_va->invalids);
INIT_LIST_HEAD(&bo_va->vm_status);
list_add_tail(&bo_va->bo_list, &bo->va);
if (bo)
list_add_tail(&bo_va->bo_list, &bo->va);
return bo_va;
}
@ -1309,7 +1316,8 @@ int amdgpu_vm_bo_map(struct amdgpu_device *adev,
/* make sure object fit at this offset */
eaddr = saddr + size - 1;
if ((saddr >= eaddr) || (offset + size > amdgpu_bo_size(bo_va->bo)))
if (saddr >= eaddr ||
(bo_va->bo && offset + size > amdgpu_bo_size(bo_va->bo)))
return -EINVAL;
last_pfn = eaddr / AMDGPU_GPU_PAGE_SIZE;