diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 74 |
1 files changed, 71 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index 1fead0e8b890..e3f16b49e970 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -343,6 +343,70 @@ int amdgpu_bo_create_kernel(struct amdgpu_device *adev, } /** + * amdgpu_bo_create_kernel_at - create BO for kernel use at specific location + * + * @adev: amdgpu device object + * @offset: offset of the BO + * @size: size of the BO + * @domain: where to place it + * @bo_ptr: used to initialize BOs in structures + * @cpu_addr: optional CPU address mapping + * + * Creates a kernel BO at a specific offset in the address space of the domain. + * + * Returns: + * 0 on success, negative error code otherwise. + */ +int amdgpu_bo_create_kernel_at(struct amdgpu_device *adev, + uint64_t offset, uint64_t size, uint32_t domain, + struct amdgpu_bo **bo_ptr, void **cpu_addr) +{ + struct ttm_operation_ctx ctx = { false, false }; + unsigned int i; + int r; + + offset &= PAGE_MASK; + size = ALIGN(size, PAGE_SIZE); + + r = amdgpu_bo_create_reserved(adev, size, PAGE_SIZE, domain, bo_ptr, + NULL, cpu_addr); + if (r) + return r; + + /* + * Remove the original mem node and create a new one at the request + * position. + */ + if (cpu_addr) + amdgpu_bo_kunmap(*bo_ptr); + + ttm_bo_mem_put(&(*bo_ptr)->tbo, &(*bo_ptr)->tbo.mem); + + for (i = 0; i < (*bo_ptr)->placement.num_placement; ++i) { + (*bo_ptr)->placements[i].fpfn = offset >> PAGE_SHIFT; + (*bo_ptr)->placements[i].lpfn = (offset + size) >> PAGE_SHIFT; + } + r = ttm_bo_mem_space(&(*bo_ptr)->tbo, &(*bo_ptr)->placement, + &(*bo_ptr)->tbo.mem, &ctx); + if (r) + goto error; + + if (cpu_addr) { + r = amdgpu_bo_kmap(*bo_ptr, cpu_addr); + if (r) + goto error; + } + + amdgpu_bo_unreserve(*bo_ptr); + return 0; + +error: + amdgpu_bo_unreserve(*bo_ptr); + amdgpu_bo_unref(bo_ptr); + return r; +} + +/** * amdgpu_bo_free_kernel - free BO for kernel use * * @bo: amdgpu BO to free @@ -451,9 +515,10 @@ static int amdgpu_bo_do_create(struct amdgpu_device *adev, { struct ttm_operation_ctx ctx = { .interruptible = (bp->type != ttm_bo_type_kernel), - .no_wait_gpu = false, + .no_wait_gpu = bp->no_wait_gpu, .resv = bp->resv, - .flags = TTM_OPT_FLAG_ALLOW_RES_EVICT + .flags = bp->type != ttm_bo_type_kernel ? + TTM_OPT_FLAG_ALLOW_RES_EVICT : 0 }; struct amdgpu_bo *bo; unsigned long page_align, size = bp->size; @@ -1058,7 +1123,10 @@ void amdgpu_bo_fini(struct amdgpu_device *adev) int amdgpu_bo_fbdev_mmap(struct amdgpu_bo *bo, struct vm_area_struct *vma) { - return ttm_fbdev_mmap(vma, &bo->tbo); + if (vma->vm_pgoff != 0) + return -EACCES; + + return ttm_bo_mmap_obj(vma, &bo->tbo); } /** |