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