1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * AMD Platform Security Processor (PSP) interface driver
 4 *
 5 * Copyright (C) 2017-2018 Advanced Micro Devices, Inc.
 6 *
 7 * Author: Brijesh Singh <brijesh.singh@amd.com>
 8 */
 9
10#ifndef __PSP_DEV_H__
11#define __PSP_DEV_H__
12
13#include <linux/device.h>
14#include <linux/spinlock.h>
15#include <linux/mutex.h>
16#include <linux/list.h>
17#include <linux/wait.h>
18#include <linux/dmapool.h>
19#include <linux/hw_random.h>
20#include <linux/bitops.h>
21#include <linux/interrupt.h>
22#include <linux/irqreturn.h>
23#include <linux/dmaengine.h>
24#include <linux/psp-sev.h>
25#include <linux/miscdevice.h>
26
27#include "sp-dev.h"
28
29#define PSP_CMD_COMPLETE		BIT(1)
30
31#define PSP_CMDRESP_CMD_SHIFT		16
32#define PSP_CMDRESP_IOC			BIT(0)
33#define PSP_CMDRESP_RESP		BIT(31)
34#define PSP_CMDRESP_ERR_MASK		0xffff
35
36#define MAX_PSP_NAME_LEN		16
37
38struct sev_misc_dev {
39	struct kref refcount;
40	struct miscdevice misc;
41};
42
43struct psp_device {
44	struct list_head entry;
45
46	struct psp_vdata *vdata;
47	char name[MAX_PSP_NAME_LEN];
48
49	struct device *dev;
50	struct sp_device *sp;
51
52	void __iomem *io_regs;
53
54	int sev_state;
55	unsigned int sev_int_rcvd;
56	wait_queue_head_t sev_int_queue;
57	struct sev_misc_dev *sev_misc;
58	struct sev_user_data_status status_cmd_buf;
59	struct sev_data_init init_cmd_buf;
60
61	u8 api_major;
62	u8 api_minor;
63	u8 build;
64};
65
66#endif /* __PSP_DEV_H */