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 struct psp_device *psp; 24 25 union dbc_buffer *mbox; 26 27 struct mutex ioctl_mutex; 28 29 struct miscdevice char_dev; 30 31 /* used to abstract communication path */ 32 bool use_ext; 33 u32 header_size; 34 u32 *payload_size; 35 u32 *result; 36 void *payload; 37 }; 38 39 union dbc_buffer { 40 struct psp_request pa_req; 41 struct psp_ext_request ext_req; 42 }; 43 44 void dbc_dev_destroy(struct psp_device *psp); 45 int dbc_dev_init(struct psp_device *psp); 46 47 #endif /* __DBC_H */ 48