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1 | /* |
2 | * Copyright 2020 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 <linux/debugfs.h> | |
25 | #include <linux/pm_runtime.h> | |
26 | ||
27 | #include "amdgpu.h" | |
28 | #include "amdgpu_rap.h" | |
29 | ||
30 | /** | |
31 | * DOC: AMDGPU RAP debugfs test interface | |
32 | * | |
33 | * how to use? | |
34 | * echo opcode > <debugfs_dir>/dri/xxx/rap_test | |
35 | * | |
36 | * opcode: | |
37 | * currently, only 2 is supported by Linux host driver, | |
38 | * opcode 2 stands for TA_CMD_RAP__VALIDATE_L0, used to | |
39 | * trigger L0 policy validation, you can refer more detail | |
40 | * from header file ta_rap_if.h | |
41 | * | |
42 | */ | |
43 | static ssize_t amdgpu_rap_debugfs_write(struct file *f, const char __user *buf, | |
44 | size_t size, loff_t *pos) | |
45 | { | |
46 | struct amdgpu_device *adev = (struct amdgpu_device *)file_inode(f)->i_private; | |
47 | struct ta_rap_shared_memory *rap_shared_mem; | |
48 | struct ta_rap_cmd_output_data *rap_cmd_output; | |
4a580877 | 49 | struct drm_device *dev = adev_to_drm(adev); |
a4322e18 WS |
50 | uint32_t op; |
51 | int ret; | |
52 | ||
53 | if (*pos || size != 2) | |
54 | return -EINVAL; | |
55 | ||
56 | ret = kstrtouint_from_user(buf, size, *pos, &op); | |
57 | if (ret) | |
58 | return ret; | |
59 | ||
60 | ret = pm_runtime_get_sync(dev->dev); | |
61 | if (ret < 0) { | |
62 | pm_runtime_put_autosuspend(dev->dev); | |
63 | return ret; | |
64 | } | |
65 | ||
66 | /* make sure gfx core is on, RAP TA cann't handle | |
67 | * GFX OFF case currently. | |
68 | */ | |
69 | amdgpu_gfx_off_ctrl(adev, false); | |
70 | ||
71 | switch (op) { | |
72 | case 2: | |
73 | ret = psp_rap_invoke(&adev->psp, op); | |
74 | ||
75 | if (ret == TA_RAP_STATUS__SUCCESS) { | |
76 | dev_info(adev->dev, "RAP L0 validate test success.\n"); | |
77 | } else { | |
78 | rap_shared_mem = (struct ta_rap_shared_memory *) | |
79 | adev->psp.rap_context.rap_shared_buf; | |
80 | rap_cmd_output = &(rap_shared_mem->rap_out_message.output); | |
81 | ||
82 | dev_info(adev->dev, "RAP test failed, the output is:\n"); | |
83 | dev_info(adev->dev, "\tlast_subsection: 0x%08x.\n", | |
84 | rap_cmd_output->last_subsection); | |
85 | dev_info(adev->dev, "\tnum_total_validate: 0x%08x.\n", | |
86 | rap_cmd_output->num_total_validate); | |
87 | dev_info(adev->dev, "\tnum_valid: 0x%08x.\n", | |
88 | rap_cmd_output->num_valid); | |
89 | dev_info(adev->dev, "\tlast_validate_addr: 0x%08x.\n", | |
90 | rap_cmd_output->last_validate_addr); | |
91 | dev_info(adev->dev, "\tlast_validate_val: 0x%08x.\n", | |
92 | rap_cmd_output->last_validate_val); | |
93 | dev_info(adev->dev, "\tlast_validate_val_exptd: 0x%08x.\n", | |
94 | rap_cmd_output->last_validate_val_exptd); | |
95 | } | |
96 | break; | |
97 | default: | |
98 | dev_info(adev->dev, "Unsupported op id: %d, ", op); | |
99 | dev_info(adev->dev, "Only support op 2(L0 validate test).\n"); | |
100 | } | |
101 | ||
102 | amdgpu_gfx_off_ctrl(adev, true); | |
103 | pm_runtime_mark_last_busy(dev->dev); | |
104 | pm_runtime_put_autosuspend(dev->dev); | |
105 | ||
106 | return size; | |
107 | } | |
108 | ||
109 | static const struct file_operations amdgpu_rap_debugfs_ops = { | |
110 | .owner = THIS_MODULE, | |
111 | .read = NULL, | |
112 | .write = amdgpu_rap_debugfs_write, | |
113 | .llseek = default_llseek | |
114 | }; | |
115 | ||
116 | void amdgpu_rap_debugfs_init(struct amdgpu_device *adev) | |
117 | { | |
118 | #if defined(CONFIG_DEBUG_FS) | |
4a580877 | 119 | struct drm_minor *minor = adev_to_drm(adev)->primary; |
a4322e18 WS |
120 | |
121 | if (!adev->psp.rap_context.rap_initialized) | |
122 | return; | |
123 | ||
124 | debugfs_create_file("rap_test", S_IWUSR, minor->debugfs_root, | |
125 | adev, &amdgpu_rap_debugfs_ops); | |
126 | #endif | |
127 | } |