1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * AMD Platform Security Processor (PSP) interface driver
 4 *
 5 * Copyright (C) 2017-2019 Advanced Micro Devices, Inc.
 6 *
 7 * Author: Brijesh Singh <brijesh.singh@amd.com>
 8 */
 9
10#ifndef __SEV_DEV_H__
11#define __SEV_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#include <linux/capability.h>
27
28#define SEV_CMDRESP_CMD			GENMASK(26, 16)
29#define SEV_CMD_COMPLETE		BIT(1)
30#define SEV_CMDRESP_IOC			BIT(0)
31
32struct sev_misc_dev {
33	struct kref refcount;
34	struct miscdevice misc;
35};
36
37struct sev_device {
38	struct device *dev;
39	struct psp_device *psp;
40
41	void __iomem *io_regs;
42
43	struct sev_vdata *vdata;
44
45	int state;
46	unsigned int int_rcvd;
47	wait_queue_head_t int_queue;
48	struct sev_misc_dev *misc;
49
50	u8 api_major;
51	u8 api_minor;
52	u8 build;
53
54	void *cmd_buf;
55};
56
57int sev_dev_init(struct psp_device *psp);
58void sev_dev_destroy(struct psp_device *psp);
59
60void sev_pci_init(void);
61void sev_pci_exit(void);
62
63#endif /* __SEV_DEV_H */