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
64
65
66
67
68
69
70
71
72
73
74
75
|
/* 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_CMDRESP_CMD GENMASK(26, 16)
#define SEV_CMD_COMPLETE BIT(1)
#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;
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;
void *cmd_buf_backup;
bool cmd_buf_active;
bool cmd_buf_backup_active;
bool snp_initialized;
struct sev_user_data_status sev_plat_status;
struct sev_user_data_snp_status snp_plat_status;
struct snp_feature_info snp_feat_info_0;
};
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);
struct page *snp_alloc_hv_fixed_pages(unsigned int num_2mb_pages);
void snp_free_hv_fixed_pages(struct page *page);
#endif /* __SEV_DEV_H */
|
