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; |
49 | struct drm_device *dev = adev_to_drm(adev); |
50 | uint32_t op; |
51 | enum ta_rap_status status; |
52 | int ret; |
53 | |
54 | if (*pos || size != 2) |
55 | return -EINVAL; |
56 | |
57 | ret = kstrtouint_from_user(s: buf, count: size, base: *pos, res: &op); |
58 | if (ret) |
59 | return ret; |
60 | |
61 | ret = pm_runtime_get_sync(dev: dev->dev); |
62 | if (ret < 0) { |
63 | pm_runtime_put_autosuspend(dev: dev->dev); |
64 | return ret; |
65 | } |
66 | |
67 | /* make sure gfx core is on, RAP TA cann't handle |
68 | * GFX OFF case currently. |
69 | */ |
70 | amdgpu_gfx_off_ctrl(adev, enable: false); |
71 | |
72 | switch (op) { |
73 | case 2: |
74 | ret = psp_rap_invoke(psp: &adev->psp, ta_cmd_id: op, status: &status); |
75 | if (!ret && status == 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.context.mem_context.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 | break; |
101 | } |
102 | |
103 | amdgpu_gfx_off_ctrl(adev, enable: true); |
104 | pm_runtime_mark_last_busy(dev: dev->dev); |
105 | pm_runtime_put_autosuspend(dev: dev->dev); |
106 | |
107 | return size; |
108 | } |
109 | |
110 | static const struct file_operations amdgpu_rap_debugfs_ops = { |
111 | .owner = THIS_MODULE, |
112 | .read = NULL, |
113 | .write = amdgpu_rap_debugfs_write, |
114 | .llseek = default_llseek |
115 | }; |
116 | |
117 | void amdgpu_rap_debugfs_init(struct amdgpu_device *adev) |
118 | { |
119 | struct drm_minor *minor = adev_to_drm(adev)->primary; |
120 | |
121 | if (!adev->psp.rap_context.context.initialized) |
122 | return; |
123 | |
124 | debugfs_create_file(name: "rap_test" , S_IWUSR, parent: minor->debugfs_root, |
125 | data: adev, fops: &amdgpu_rap_debugfs_ops); |
126 | } |
127 | |