diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c new file mode 100644 index 000000000000..8da5356c36f1 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c @@ -0,0 +1,127 @@ +/* + * 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; + 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); + + if (ret == 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"); + } + + 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 +} |