1/*
 2 * Copyright 2021 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
24#include "amdgpu_reset.h"
25#include "aldebaran.h"
26
27int amdgpu_reset_add_handler(struct amdgpu_reset_control *reset_ctl,
28			     struct amdgpu_reset_handler *handler)
29{
30	/* TODO: Check if handler exists? */
31	list_add_tail(&handler->handler_list, &reset_ctl->reset_handlers);
32	return 0;
33}
34
35int amdgpu_reset_init(struct amdgpu_device *adev)
36{
37	int ret = 0;
38
39	switch (adev->asic_type) {
40	case CHIP_ALDEBARAN:
41		ret = aldebaran_reset_init(adev);
42		break;
43	default:
44		break;
45	}
46
47	return ret;
48}
49
50int amdgpu_reset_fini(struct amdgpu_device *adev)
51{
52	int ret = 0;
53
54	switch (adev->asic_type) {
55	case CHIP_ALDEBARAN:
56		ret = aldebaran_reset_fini(adev);
57		break;
58	default:
59		break;
60	}
61
62	return ret;
63}
64
65int amdgpu_reset_prepare_hwcontext(struct amdgpu_device *adev,
66				   struct amdgpu_reset_context *reset_context)
67{
68	struct amdgpu_reset_handler *reset_handler = NULL;
69
70	if (adev->reset_cntl && adev->reset_cntl->get_reset_handler)
71		reset_handler = adev->reset_cntl->get_reset_handler(
72			adev->reset_cntl, reset_context);
73	if (!reset_handler)
74		return -ENOSYS;
75
76	return reset_handler->prepare_hwcontext(adev->reset_cntl,
77						reset_context);
78}
79
80int amdgpu_reset_perform_reset(struct amdgpu_device *adev,
81			       struct amdgpu_reset_context *reset_context)
82{
83	int ret;
84	struct amdgpu_reset_handler *reset_handler = NULL;
85
86	if (adev->reset_cntl)
87		reset_handler = adev->reset_cntl->get_reset_handler(
88			adev->reset_cntl, reset_context);
89	if (!reset_handler)
90		return -ENOSYS;
91
92	ret = reset_handler->perform_reset(adev->reset_cntl, reset_context);
93	if (ret)
94		return ret;
95
96	return reset_handler->restore_hwcontext(adev->reset_cntl,
97						reset_context);
98}