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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 a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * 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 OR20 * 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 interface32 *33 * how to use?34 * echo opcode > <debugfs_dir>/dri/xxx/rap_test35 *36 * opcode:37 * currently, only 2 is supported by Linux host driver,38 * opcode 2 stands for TA_CMD_RAP__VALIDATE_L0, used to39 * trigger L0 policy validation, you can refer more detail40 * from header file ta_rap_if.h41 *42 */43static 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(buf, size, *pos, &op);58 if (ret)59 return ret;60 61 ret = pm_runtime_get_sync(dev->dev);62 if (ret < 0) {63 pm_runtime_put_autosuspend(dev->dev);64 return ret;65 }66 67 /* make sure gfx core is on, RAP TA cann't handle68 * GFX OFF case currently.69 */70 amdgpu_gfx_off_ctrl(adev, false);71 72 switch (op) {73 case 2:74 ret = psp_rap_invoke(&adev->psp, op, &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, true);104 pm_runtime_mark_last_busy(dev->dev);105 pm_runtime_put_autosuspend(dev->dev);106 107 return size;108}109 110static const struct file_operations amdgpu_rap_debugfs_ops = {111 .owner = THIS_MODULE,112 .read = NULL,113 .write = amdgpu_rap_debugfs_write,114 .llseek = default_llseek115};116 117void 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("rap_test", S_IWUSR, minor->debugfs_root,125 adev, &amdgpu_rap_debugfs_ops);126}127