/*- * 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 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0) #include #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; }; struct vfio_iommu_spapr_tce_ddw_info { uint64_t pgsizes; uint32_t max_dynamic_windows_supported; uint32_t levels; }; /* SPAPR_v2 is not present, but SPAPR might be */ #ifndef VFIO_SPAPR_TCE_IOMMU #define VFIO_IOMMU_SPAPR_TCE_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12) struct vfio_iommu_spapr_tce_info { uint32_t argsz; uint32_t flags; uint32_t dma32_window_start; uint32_t dma32_window_size; struct vfio_iommu_spapr_tce_ddw_info ddw; }; #endif /* VFIO_SPAPR_TCE_IOMMU */ #else /* VFIO_SPAPR_TCE_v2_IOMMU */ #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_ */