From: Christian König <[email protected]> We often allocate, pin and map things at the same time in the kernel.
Signed-off-by: Christian König <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 63 ++++++++++++++++++++++++++++++ drivers/gpu/drm/amd/amdgpu/amdgpu_object.h | 4 ++ 2 files changed, 67 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index 6f0873c..9357358 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -211,6 +211,69 @@ static void amdgpu_fill_placement_to_bo(struct amdgpu_bo *bo, bo->placement.busy_placement = bo->placements; } +/** + * amdgpu_bo_create_kernel - create BO for kernel use + * + * @adev: amdgpu device object + * @size: size for the new BO + * @align: alignment for the new BO + * @domain: where to place it + * @bo_ptr: resulting BO + * @gpu_addr: GPU addr of the pinned BO + * @cpu_addr: optional CPU address mapping + * + * Allocates and pins a BO for kernel internal use. + * + * Returns 0 on success, negative error code otherwise. + */ +int amdgpu_bo_create_kernel(struct amdgpu_device *adev, + unsigned long size, int align, + u32 domain, struct amdgpu_bo **bo_ptr, + u64 *gpu_addr, void **cpu_addr) +{ + int r; + + r = amdgpu_bo_create(adev, size, align, true, domain, + AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED, + NULL, NULL, bo_ptr); + if (r) { + dev_err(adev->dev, "(%d) failed to allocate kernel bo\n", r); + return r; + } + + r = amdgpu_bo_reserve(*bo_ptr, false); + if (r) { + dev_err(adev->dev, "(%d) failed to reserve kernel bo\n", r); + goto error_free; + } + + r = amdgpu_bo_pin(*bo_ptr, domain, gpu_addr); + if (r) { + dev_err(adev->dev, "(%d) kernel bo pin failed\n", r); + goto error_unreserve; + } + + if (cpu_addr) { + r = amdgpu_bo_kmap(*bo_ptr, cpu_addr); + if (r) { + dev_err(adev->dev, "(%d) kernel bo map failed\n", r); + goto error_unreserve; + } + } + + amdgpu_bo_unreserve(*bo_ptr); + + return 0; + +error_unreserve: + amdgpu_bo_unreserve(*bo_ptr); + +error_free: + amdgpu_bo_unref(bo_ptr); + + return r; +} + int amdgpu_bo_create_restricted(struct amdgpu_device *adev, unsigned long size, int byte_align, bool kernel, u32 domain, u64 flags, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h index bdb01d9..ae188a8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h @@ -139,6 +139,10 @@ int amdgpu_bo_create_restricted(struct amdgpu_device *adev, struct ttm_placement *placement, struct reservation_object *resv, struct amdgpu_bo **bo_ptr); +int amdgpu_bo_create_kernel(struct amdgpu_device *adev, + unsigned long size, int align, + u32 domain, struct amdgpu_bo **bo_ptr, + u64 *gpu_addr, void **cpu_addr); int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr); void amdgpu_bo_kunmap(struct amdgpu_bo *bo); struct amdgpu_bo *amdgpu_bo_ref(struct amdgpu_bo *bo); -- 2.5.0 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
