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 21struct 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 31struct dbc_nonce { 32 struct psp_req_buffer_hdr header; 33 struct dbc_user_nonce user; 34} __packed; 35 36struct dbc_set_uid { 37 struct psp_req_buffer_hdr header; 38 struct dbc_user_setuid user; 39} __packed; 40 41struct dbc_param { 42 struct psp_req_buffer_hdr header; 43 struct dbc_user_param user; 44} __packed; 45 46union dbc_buffer { 47 struct psp_request req; 48 struct dbc_nonce dbc_nonce; 49 struct dbc_set_uid dbc_set_uid; 50 struct dbc_param dbc_param; 51}; 52 53void dbc_dev_destroy(struct psp_device *psp); 54int dbc_dev_init(struct psp_device *psp); 55 56#endif /* __DBC_H */ 57