summaryrefslogtreecommitdiffstats
path: root/drivers/crypto/ccp/sev-dev.h
blob: 666c21eb81ab35e94a56c9a28bce47b56e35bf88 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * AMD Platform Security Processor (PSP) interface driver
 *
 * Copyright (C) 2017-2019 Advanced Micro Devices, Inc.
 *
 * Author: Brijesh Singh <brijesh.singh@amd.com>
 */

#ifndef __SEV_DEV_H__
#define __SEV_DEV_H__

#include <linux/device.h>
#include <linux/spinlock.h>
#include <linux/mutex.h>
#include <linux/list.h>
#include <linux/wait.h>
#include <linux/dmapool.h>
#include <linux/hw_random.h>
#include <linux/bitops.h>
#include <linux/interrupt.h>
#include <linux/irqreturn.h>
#include <linux/dmaengine.h>
#include <linux/psp-sev.h>
#include <linux/miscdevice.h>
#include <linux/capability.h>

#define SEV_CMD_COMPLETE		BIT(1)
#define SEV_CMDRESP_CMD_SHIFT		16
#define SEV_CMDRESP_IOC			BIT(0)

struct sev_misc_dev {
	struct kref refcount;
	struct miscdevice misc;
};

struct sev_device {
	struct device *dev;
	struct psp_device *psp;

	void __iomem *io_regs;

	struct sev_vdata *vdata;

	int state;
	unsigned int int_rcvd;
	wait_queue_head_t int_queue;
	struct sev_misc_dev *misc;

	u8 api_major;
	u8 api_minor;
	u8 build;

	void *cmd_buf;
};

int sev_dev_init(struct psp_device *psp);
void sev_dev_destroy(struct psp_device *psp);

void sev_pci_init(void);
void sev_pci_exit(void);

#endif /* __SEV_DEV_H */