1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * AMD Platform Security Processor (PSP) Dynamic Boost Control support 4 * 5 * Copyright (C) 2023 Advanced Micro Devices, Inc. 6 * 7 * Author: Mario Limonciello <mario.limonciello@amd.com> 8 */ 9 10 #ifndef __DBC_H__ 11 #define __DBC_H__ 12 13 #include <uapi/linux/psp-dbc.h> 14 15 #include <linux/device.h> 16 #include <linux/miscdevice.h> 17 #include <linux/psp-platform-access.h> 18 19 #include "psp-dev.h" 20 21 struct psp_dbc_device { 22 struct device *dev; 23 24 union dbc_buffer *mbox; 25 26 struct mutex ioctl_mutex; 27 28 struct miscdevice char_dev; 29 }; 30 31 struct dbc_nonce { 32 struct psp_req_buffer_hdr header; 33 struct dbc_user_nonce user; 34 } __packed; 35 36 struct dbc_set_uid { 37 struct psp_req_buffer_hdr header; 38 struct dbc_user_setuid user; 39 } __packed; 40 41 union dbc_buffer { 42 struct psp_request req; 43 struct dbc_nonce dbc_nonce; 44 struct dbc_set_uid dbc_set_uid; 45 }; 46 47 void dbc_dev_destroy(struct psp_device *psp); 48 int dbc_dev_init(struct psp_device *psp); 49 50 #endif /* __DBC_H */ 51