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	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
39union dbc_buffer {
40	struct psp_request		pa_req;
41	struct psp_ext_request		ext_req;
42};
43
44void dbc_dev_destroy(struct psp_device *psp);
45int dbc_dev_init(struct psp_device *psp);
46
47#endif /* __DBC_H */
48