/*
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* Copyright 2020 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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*
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*/
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#include <linux/debugfs.h>
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#include <linux/pm_runtime.h>
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#include "amdgpu.h"
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#include "amdgpu_rap.h"
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/**
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* DOC: AMDGPU RAP debugfs test interface
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*
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* how to use?
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* echo opcode > <debugfs_dir>/dri/xxx/rap_test
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*
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* opcode:
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* currently, only 2 is supported by Linux host driver,
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* opcode 2 stands for TA_CMD_RAP__VALIDATE_L0, used to
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* trigger L0 policy validation, you can refer more detail
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* from header file ta_rap_if.h
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*
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*/
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static ssize_t amdgpu_rap_debugfs_write(struct file *f, const char __user *buf,
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size_t size, loff_t *pos)
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{
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struct amdgpu_device *adev = (struct amdgpu_device *)file_inode(f)->i_private;
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struct ta_rap_shared_memory *rap_shared_mem;
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struct ta_rap_cmd_output_data *rap_cmd_output;
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struct drm_device *dev = adev_to_drm(adev);
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uint32_t op;
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int ret;
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if (*pos || size != 2)
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return -EINVAL;
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ret = kstrtouint_from_user(buf, size, *pos, &op);
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if (ret)
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return ret;
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ret = pm_runtime_get_sync(dev->dev);
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if (ret < 0) {
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pm_runtime_put_autosuspend(dev->dev);
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return ret;
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}
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/* make sure gfx core is on, RAP TA cann't handle
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* GFX OFF case currently.
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*/
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amdgpu_gfx_off_ctrl(adev, false);
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switch (op) {
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case 2:
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ret = psp_rap_invoke(&adev->psp, op);
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if (ret == TA_RAP_STATUS__SUCCESS) {
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dev_info(adev->dev, "RAP L0 validate test success.\n");
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} else {
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rap_shared_mem = (struct ta_rap_shared_memory *)
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adev->psp.rap_context.rap_shared_buf;
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rap_cmd_output = &(rap_shared_mem->rap_out_message.output);
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dev_info(adev->dev, "RAP test failed, the output is:\n");
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dev_info(adev->dev, "\tlast_subsection: 0x%08x.\n",
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rap_cmd_output->last_subsection);
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dev_info(adev->dev, "\tnum_total_validate: 0x%08x.\n",
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rap_cmd_output->num_total_validate);
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dev_info(adev->dev, "\tnum_valid: 0x%08x.\n",
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rap_cmd_output->num_valid);
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dev_info(adev->dev, "\tlast_validate_addr: 0x%08x.\n",
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rap_cmd_output->last_validate_addr);
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dev_info(adev->dev, "\tlast_validate_val: 0x%08x.\n",
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rap_cmd_output->last_validate_val);
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dev_info(adev->dev, "\tlast_validate_val_exptd: 0x%08x.\n",
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rap_cmd_output->last_validate_val_exptd);
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}
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break;
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default:
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dev_info(adev->dev, "Unsupported op id: %d, ", op);
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dev_info(adev->dev, "Only support op 2(L0 validate test).\n");
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}
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amdgpu_gfx_off_ctrl(adev, true);
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pm_runtime_mark_last_busy(dev->dev);
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pm_runtime_put_autosuspend(dev->dev);
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return size;
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}
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static const struct file_operations amdgpu_rap_debugfs_ops = {
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.owner = THIS_MODULE,
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.read = NULL,
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.write = amdgpu_rap_debugfs_write,
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.llseek = default_llseek
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};
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void amdgpu_rap_debugfs_init(struct amdgpu_device *adev)
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{
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#if defined(CONFIG_DEBUG_FS)
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struct drm_minor *minor = adev_to_drm(adev)->primary;
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if (!adev->psp.rap_context.rap_initialized)
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return;
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debugfs_create_file("rap_test", S_IWUSR, minor->debugfs_root,
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adev, &amdgpu_rap_debugfs_ops);
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#endif
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}
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