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
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/*-
* BSD LICENSE
*
* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef EAL_VFIO_H_
#define EAL_VFIO_H_
/*
* determine if VFIO is present on the system
*/
#ifdef RTE_EAL_VFIO
#include <linux/version.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0)
#include <linux/vfio.h>
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 10, 0)
#define RTE_PCI_MSIX_TABLE_BIR 0x7
#define RTE_PCI_MSIX_TABLE_OFFSET 0xfffffff8
#define RTE_PCI_MSIX_FLAGS_QSIZE 0x07ff
#else
#define RTE_PCI_MSIX_TABLE_BIR PCI_MSIX_TABLE_BIR
#define RTE_PCI_MSIX_TABLE_OFFSET PCI_MSIX_TABLE_OFFSET
#define RTE_PCI_MSIX_FLAGS_QSIZE PCI_MSIX_FLAGS_QSIZE
#endif
#define RTE_VFIO_TYPE1 VFIO_TYPE1_IOMMU
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0)
#define RTE_VFIO_NOIOMMU 8
#else
#define RTE_VFIO_NOIOMMU VFIO_NOIOMMU_IOMMU
#endif
#define VFIO_MAX_GROUPS 64
/*
* Function prototypes for VFIO multiprocess sync functions
*/
int vfio_mp_sync_send_request(int socket, int req);
int vfio_mp_sync_receive_request(int socket);
int vfio_mp_sync_send_fd(int socket, int fd);
int vfio_mp_sync_receive_fd(int socket);
int vfio_mp_sync_connect_to_primary(void);
/*
* we don't need to store device fd's anywhere since they can be obtained from
* the group fd via an ioctl() call.
*/
struct vfio_group {
int group_no;
int fd;
};
struct vfio_config {
int vfio_enabled;
int vfio_container_fd;
int vfio_container_has_dma;
int vfio_group_idx;
struct vfio_group vfio_groups[VFIO_MAX_GROUPS];
};
#define VFIO_DIR "/dev/vfio"
#define VFIO_CONTAINER_PATH "/dev/vfio/vfio"
#define VFIO_GROUP_FMT "/dev/vfio/%u"
#define VFIO_NOIOMMU_GROUP_FMT "/dev/vfio/noiommu-%u"
#define VFIO_GET_REGION_ADDR(x) ((uint64_t) x << 40ULL)
#define VFIO_GET_REGION_IDX(x) (x >> 40)
/* DMA mapping function prototype.
* Takes VFIO container fd as a parameter.
* Returns 0 on success, -1 on error.
* */
typedef int (*vfio_dma_func_t)(int);
struct vfio_iommu_type {
int type_id;
const char *name;
vfio_dma_func_t dma_map_func;
};
/* pick IOMMU type. returns a pointer to vfio_iommu_type or NULL for error */
const struct vfio_iommu_type *
vfio_set_iommu_type(int vfio_container_fd);
/* check if we have any supported extensions */
int
vfio_has_supported_extensions(int vfio_container_fd);
/* open container fd or get an existing one */
int
vfio_get_container_fd(void);
/* parse IOMMU group number for a device
* returns 1 on success, -1 for errors, 0 for non-existent group
*/
int
vfio_get_group_no(const char *sysfs_base,
const char *dev_addr, int *iommu_group_no);
/* open group fd or get an existing one */
int
vfio_get_group_fd(int iommu_group_no);
/**
* Setup vfio_cfg for the device identified by its address. It discovers
* the configured I/O MMU groups or sets a new one for the device. If a new
* groups is assigned, the DMA mapping is performed.
* Returns 0 on success, a negative value on failure and a positive value in
* case the given device cannot be managed this way.
*/
int vfio_setup_device(const char *sysfs_base, const char *dev_addr,
int *vfio_dev_fd, struct vfio_device_info *device_info);
int vfio_enable(const char *modname);
int vfio_is_enabled(const char *modname);
int pci_vfio_enable(void);
int pci_vfio_is_enabled(void);
int vfio_mp_sync_setup(void);
#define SOCKET_REQ_CONTAINER 0x100
#define SOCKET_REQ_GROUP 0x200
#define SOCKET_OK 0x0
#define SOCKET_NO_FD 0x1
#define SOCKET_ERR 0xFF
#define VFIO_PRESENT
#endif /* kernel version */
#endif /* RTE_EAL_VFIO */
#endif /* EAL_VFIO_H_ */
|
