1/*
2 * Copyright 2018 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 */
23#include <drm/drmP.h>
24#include "amdgpu.h"
25#include "amdgpu_sdma.h"
26
27/*
28 * GPU SDMA IP block helpers function.
29 */
30
31struct amdgpu_sdma_instance *amdgpu_sdma_get_instance_from_ring(struct amdgpu_ring *ring)
32{
33 struct amdgpu_device *adev = ring->adev;
34 int i;
35
36 for (i = 0; i < adev->sdma.num_instances; i++)
37 if (ring == &adev->sdma.instance[i].ring ||
38 ring == &adev->sdma.instance[i].page)
39 return &adev->sdma.instance[i];
40
41 return NULL;
42}
43
44int amdgpu_sdma_get_index_from_ring(struct amdgpu_ring *ring, uint32_t *index)
45{
46 struct amdgpu_device *adev = ring->adev;
47 int i;
48
49 for (i = 0; i < adev->sdma.num_instances; i++) {
50 if (ring == &adev->sdma.instance[i].ring ||
51 ring == &adev->sdma.instance[i].page) {
52 *index = i;
53 return 0;
54 }
55 }
56
57 return -EINVAL;
58}
59