4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * * Neither the name of Intel Corporation nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 * determine if VFIO is present on the system
41 #include <linux/version.h>
42 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0)
43 #include <linux/vfio.h>
45 #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 10, 0)
46 #define RTE_PCI_MSIX_TABLE_BIR 0x7
47 #define RTE_PCI_MSIX_TABLE_OFFSET 0xfffffff8
48 #define RTE_PCI_MSIX_FLAGS_QSIZE 0x07ff
50 #define RTE_PCI_MSIX_TABLE_BIR PCI_MSIX_TABLE_BIR
51 #define RTE_PCI_MSIX_TABLE_OFFSET PCI_MSIX_TABLE_OFFSET
52 #define RTE_PCI_MSIX_FLAGS_QSIZE PCI_MSIX_FLAGS_QSIZE
55 #define RTE_VFIO_TYPE1 VFIO_TYPE1_IOMMU
57 #ifndef VFIO_SPAPR_TCE_v2_IOMMU
58 #define RTE_VFIO_SPAPR 7
59 #define VFIO_IOMMU_SPAPR_REGISTER_MEMORY _IO(VFIO_TYPE, VFIO_BASE + 17)
60 #define VFIO_IOMMU_SPAPR_TCE_CREATE _IO(VFIO_TYPE, VFIO_BASE + 19)
61 #define VFIO_IOMMU_SPAPR_TCE_REMOVE _IO(VFIO_TYPE, VFIO_BASE + 20)
63 struct vfio_iommu_spapr_register_memory {
70 struct vfio_iommu_spapr_tce_create {
83 struct vfio_iommu_spapr_tce_remove {
90 struct vfio_iommu_spapr_tce_ddw_info {
92 uint32_t max_dynamic_windows_supported;
96 /* SPAPR_v2 is not present, but SPAPR might be */
97 #ifndef VFIO_SPAPR_TCE_IOMMU
98 #define VFIO_IOMMU_SPAPR_TCE_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12)
100 struct vfio_iommu_spapr_tce_info {
103 uint32_t dma32_window_start;
104 uint32_t dma32_window_size;
105 struct vfio_iommu_spapr_tce_ddw_info ddw;
107 #endif /* VFIO_SPAPR_TCE_IOMMU */
109 #else /* VFIO_SPAPR_TCE_v2_IOMMU */
110 #define RTE_VFIO_SPAPR VFIO_SPAPR_TCE_v2_IOMMU
113 #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0)
114 #define RTE_VFIO_NOIOMMU 8
116 #define RTE_VFIO_NOIOMMU VFIO_NOIOMMU_IOMMU
119 #define VFIO_MAX_GROUPS 64
122 * Function prototypes for VFIO multiprocess sync functions
124 int vfio_mp_sync_send_request(int socket, int req);
125 int vfio_mp_sync_receive_request(int socket);
126 int vfio_mp_sync_send_fd(int socket, int fd);
127 int vfio_mp_sync_receive_fd(int socket);
128 int vfio_mp_sync_connect_to_primary(void);
131 * we don't need to store device fd's anywhere since they can be obtained from
132 * the group fd via an ioctl() call.
142 int vfio_container_fd;
143 int vfio_active_groups;
144 struct vfio_group vfio_groups[VFIO_MAX_GROUPS];
147 /* DMA mapping function prototype.
148 * Takes VFIO container fd as a parameter.
149 * Returns 0 on success, -1 on error.
151 typedef int (*vfio_dma_func_t)(int);
153 struct vfio_iommu_type {
156 vfio_dma_func_t dma_map_func;
159 /* pick IOMMU type. returns a pointer to vfio_iommu_type or NULL for error */
160 const struct vfio_iommu_type *
161 vfio_set_iommu_type(int vfio_container_fd);
163 /* check if we have any supported extensions */
165 vfio_has_supported_extensions(int vfio_container_fd);
167 /* open container fd or get an existing one */
169 vfio_get_container_fd(void);
171 /* parse IOMMU group number for a device
172 * returns 1 on success, -1 for errors, 0 for non-existent group
175 vfio_get_group_no(const char *sysfs_base,
176 const char *dev_addr, int *iommu_group_no);
178 /* open group fd or get an existing one */
180 vfio_get_group_fd(int iommu_group_no);
182 /* remove group fd from internal VFIO group fd array */
184 clear_group(int vfio_group_fd);
186 int pci_vfio_is_enabled(void);
188 int vfio_mp_sync_setup(void);
190 #define SOCKET_REQ_CONTAINER 0x100
191 #define SOCKET_REQ_GROUP 0x200
192 #define SOCKET_CLR_GROUP 0x300
193 #define SOCKET_OK 0x0
194 #define SOCKET_NO_FD 0x1
195 #define SOCKET_ERR 0xFF
198 #endif /* kernel version */
199 #endif /* RTE_EAL_VFIO */
201 #endif /* EAL_VFIO_H_ */