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/*-
* 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
#ifndef VFIO_SPAPR_TCE_v2_IOMMU
#define RTE_VFIO_SPAPR 7
#define VFIO_IOMMU_SPAPR_REGISTER_MEMORY _IO(VFIO_TYPE, VFIO_BASE + 17)
#define VFIO_IOMMU_SPAPR_TCE_CREATE _IO(VFIO_TYPE, VFIO_BASE + 19)
#define VFIO_IOMMU_SPAPR_TCE_REMOVE _IO(VFIO_TYPE, VFIO_BASE + 20)
struct vfio_iommu_spapr_register_memory {
uint32_t argsz;
uint32_t flags;
uint64_t vaddr;
uint64_t size;
};
struct vfio_iommu_spapr_tce_create {
uint32_t argsz;
uint32_t page_shift;
uint64_t window_size;
uint32_t levels;
};
struct vfio_iommu_spapr_tce_remove {
uint32_t argsz;
uint64_t start_addr;
};
#else
#define RTE_VFIO_SPAPR VFIO_SPAPR_TCE_v2_IOMMU
#endif
#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_ */
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