From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c | 183 ++++++++++++++++++++++ 1 file changed, 183 insertions(+) create mode 100644 drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c new file mode 100644 index 0000000000..8ed0e07365 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c @@ -0,0 +1,183 @@ +/* + * Copyright 2021 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 +#include + +#include "amdgpu.h" +#include "amdgpu_securedisplay.h" + +/** + * DOC: AMDGPU SECUREDISPLAY debugfs test interface + * + * how to use? + * echo opcode > /dri/xxx/securedisplay_test + * eg. echo 1 > /dri/xxx/securedisplay_test + * eg. echo 2 phy_id > /dri/xxx/securedisplay_test + * + * opcode: + * 1：Query whether TA is responding used only for validation pupose + * 2: Send region of Interest and CRC value to I2C. (uint32)phy_id is + * send to determine which DIO scratch register should be used to get + * ROI and receive i2c_buf as the output. + * + * You can refer more detail from header file ta_securedisplay_if.h + * + */ + +void psp_securedisplay_parse_resp_status(struct psp_context *psp, + enum ta_securedisplay_status status) +{ + switch (status) { + case TA_SECUREDISPLAY_STATUS__SUCCESS: + break; + case TA_SECUREDISPLAY_STATUS__GENERIC_FAILURE: + dev_err(psp->adev->dev, "Secure display: Generic Failure."); + break; + case TA_SECUREDISPLAY_STATUS__INVALID_PARAMETER: + dev_err(psp->adev->dev, "Secure display: Invalid Parameter."); + break; + case TA_SECUREDISPLAY_STATUS__NULL_POINTER: + dev_err(psp->adev->dev, "Secure display: Null Pointer."); + break; + case TA_SECUREDISPLAY_STATUS__I2C_WRITE_ERROR: + dev_err(psp->adev->dev, "Secure display: Failed to write to I2C."); + break; + case TA_SECUREDISPLAY_STATUS__READ_DIO_SCRATCH_ERROR: + dev_err(psp->adev->dev, "Secure display: Failed to Read DIO Scratch Register."); + break; + case TA_SECUREDISPLAY_STATUS__READ_CRC_ERROR: + dev_err(psp->adev->dev, "Secure display: Failed to Read CRC"); + break; + case TA_SECUREDISPLAY_STATUS__I2C_INIT_ERROR: + dev_err(psp->adev->dev, "Secure display: Failed to initialize I2C."); + break; + default: + dev_err(psp->adev->dev, "Secure display: Failed to parse status: %d\n", status); + } +} + +void psp_prep_securedisplay_cmd_buf(struct psp_context *psp, struct ta_securedisplay_cmd **cmd, + enum ta_securedisplay_command command_id) +{ + *cmd = (struct ta_securedisplay_cmd *)psp->securedisplay_context.context.mem_context.shared_buf; + memset(*cmd, 0, sizeof(struct ta_securedisplay_cmd)); + (*cmd)->status = TA_SECUREDISPLAY_STATUS__GENERIC_FAILURE; + (*cmd)->cmd_id = command_id; +} + +#if defined(CONFIG_DEBUG_FS) + +static ssize_t amdgpu_securedisplay_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 psp_context *psp = &adev->psp; + struct ta_securedisplay_cmd *securedisplay_cmd; + struct drm_device *dev = adev_to_drm(adev); + uint32_t phy_id; + uint32_t op; + char str[64]; + int ret; + + if (*pos || size > sizeof(str) - 1) + return -EINVAL; + + memset(str, 0, sizeof(str)); + ret = copy_from_user(str, buf, size); + if (ret) + return -EFAULT; + + ret = pm_runtime_get_sync(dev->dev); + if (ret < 0) { + pm_runtime_put_autosuspend(dev->dev); + return ret; + } + + if (size < 3) + sscanf(str, "%u ", &op); + else + sscanf(str, "%u %u", &op, &phy_id); + + switch (op) { + case 1: + mutex_lock(&psp->securedisplay_context.mutex); + psp_prep_securedisplay_cmd_buf(psp, &securedisplay_cmd, + TA_SECUREDISPLAY_COMMAND__QUERY_TA); + ret = psp_securedisplay_invoke(psp, TA_SECUREDISPLAY_COMMAND__QUERY_TA); + if (!ret) { + if (securedisplay_cmd->status == TA_SECUREDISPLAY_STATUS__SUCCESS) + dev_info(adev->dev, "SECUREDISPLAY: query securedisplay TA ret is 0x%X\n", + securedisplay_cmd->securedisplay_out_message.query_ta.query_cmd_ret); + else + psp_securedisplay_parse_resp_status(psp, securedisplay_cmd->status); + } + mutex_unlock(&psp->securedisplay_context.mutex); + break; + case 2: + mutex_lock(&psp->securedisplay_context.mutex); + psp_prep_securedisplay_cmd_buf(psp, &securedisplay_cmd, + TA_SECUREDISPLAY_COMMAND__SEND_ROI_CRC); + securedisplay_cmd->securedisplay_in_message.send_roi_crc.phy_id = phy_id; + ret = psp_securedisplay_invoke(psp, TA_SECUREDISPLAY_COMMAND__SEND_ROI_CRC); + if (!ret) { + if (securedisplay_cmd->status == TA_SECUREDISPLAY_STATUS__SUCCESS) { + dev_info(adev->dev, "SECUREDISPLAY: I2C buffer out put is: %*ph\n", + TA_SECUREDISPLAY_I2C_BUFFER_SIZE, + securedisplay_cmd->securedisplay_out_message.send_roi_crc.i2c_buf); + } else { + psp_securedisplay_parse_resp_status(psp, securedisplay_cmd->status); + } + } + mutex_unlock(&psp->securedisplay_context.mutex); + break; + default: + dev_err(adev->dev, "Invalid input: %s\n", str); + } + + pm_runtime_mark_last_busy(dev->dev); + pm_runtime_put_autosuspend(dev->dev); + + return size; +} + +static const struct file_operations amdgpu_securedisplay_debugfs_ops = { + .owner = THIS_MODULE, + .read = NULL, + .write = amdgpu_securedisplay_debugfs_write, + .llseek = default_llseek +}; + +#endif + +void amdgpu_securedisplay_debugfs_init(struct amdgpu_device *adev) +{ +#if defined(CONFIG_DEBUG_FS) + + if (!adev->psp.securedisplay_context.context.initialized) + return; + + debugfs_create_file("securedisplay_test", S_IWUSR, adev_to_drm(adev)->primary->debugfs_root, + adev, &amdgpu_securedisplay_debugfs_ops); +#endif +} -- cgit v1.2.3