a083f8cc77
Since the kernel modules are moved to kernel/ directory, there is no need anymore for the sub-directory eal/ in linux/, freebsd/ and windows/. Signed-off-by: Thomas Monjalon <thomas@monjalon.net> Acked-by: David Marchand <david.marchand@redhat.com>
159 lines
3.6 KiB
C
159 lines
3.6 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation
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*/
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#ifndef EAL_VFIO_H_
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#define EAL_VFIO_H_
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#include <rte_common.h>
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/*
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* determine if VFIO is present on the system
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*/
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#if !defined(VFIO_PRESENT) && defined(RTE_EAL_VFIO)
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#include <linux/version.h>
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0)
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#define VFIO_PRESENT
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#else
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#pragma message("VFIO configured but not supported by this kernel, disabling.")
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#endif /* kernel version >= 3.6.0 */
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#endif /* RTE_EAL_VFIO */
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#ifdef VFIO_PRESENT
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#include <stdint.h>
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#include <linux/vfio.h>
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#define RTE_VFIO_TYPE1 VFIO_TYPE1_IOMMU
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#ifndef VFIO_SPAPR_TCE_v2_IOMMU
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#define RTE_VFIO_SPAPR 7
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#define VFIO_IOMMU_SPAPR_REGISTER_MEMORY _IO(VFIO_TYPE, VFIO_BASE + 17)
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#define VFIO_IOMMU_SPAPR_UNREGISTER_MEMORY _IO(VFIO_TYPE, VFIO_BASE + 18)
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#define VFIO_IOMMU_SPAPR_TCE_CREATE _IO(VFIO_TYPE, VFIO_BASE + 19)
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#define VFIO_IOMMU_SPAPR_TCE_REMOVE _IO(VFIO_TYPE, VFIO_BASE + 20)
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struct vfio_iommu_spapr_register_memory {
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uint32_t argsz;
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uint32_t flags;
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uint64_t vaddr;
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uint64_t size;
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};
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struct vfio_iommu_spapr_tce_create {
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uint32_t argsz;
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uint32_t flags;
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/* in */
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uint32_t page_shift;
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uint32_t __resv1;
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uint64_t window_size;
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uint32_t levels;
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uint32_t __resv2;
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/* out */
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uint64_t start_addr;
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};
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struct vfio_iommu_spapr_tce_remove {
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uint32_t argsz;
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uint32_t flags;
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/* in */
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uint64_t start_addr;
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};
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struct vfio_iommu_spapr_tce_ddw_info {
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uint64_t pgsizes;
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uint32_t max_dynamic_windows_supported;
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uint32_t levels;
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};
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/* SPAPR_v2 is not present, but SPAPR might be */
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#ifndef VFIO_SPAPR_TCE_IOMMU
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#define VFIO_IOMMU_SPAPR_TCE_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12)
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struct vfio_iommu_spapr_tce_info {
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uint32_t argsz;
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uint32_t flags;
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uint32_t dma32_window_start;
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uint32_t dma32_window_size;
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struct vfio_iommu_spapr_tce_ddw_info ddw;
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};
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#endif /* VFIO_SPAPR_TCE_IOMMU */
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#else /* VFIO_SPAPR_TCE_v2_IOMMU */
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#define RTE_VFIO_SPAPR VFIO_SPAPR_TCE_v2_IOMMU
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#endif
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#define VFIO_MAX_GROUPS RTE_MAX_VFIO_GROUPS
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#define VFIO_MAX_CONTAINERS RTE_MAX_VFIO_CONTAINERS
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/*
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* we don't need to store device fd's anywhere since they can be obtained from
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* the group fd via an ioctl() call.
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*/
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struct vfio_group {
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int group_num;
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int fd;
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int devices;
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};
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/* DMA mapping function prototype.
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* Takes VFIO container fd as a parameter.
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* Returns 0 on success, -1 on error.
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* */
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typedef int (*vfio_dma_func_t)(int);
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/* Custom memory region DMA mapping function prototype.
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* Takes VFIO container fd, virtual address, phisical address, length and
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* operation type (0 to unmap 1 for map) as a parameters.
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* Returns 0 on success, -1 on error.
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**/
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typedef int (*vfio_dma_user_func_t)(int fd, uint64_t vaddr, uint64_t iova,
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uint64_t len, int do_map);
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struct vfio_iommu_type {
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int type_id;
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const char *name;
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vfio_dma_user_func_t dma_user_map_func;
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vfio_dma_func_t dma_map_func;
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};
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/* get the vfio container that devices are bound to by default */
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int vfio_get_default_container_fd(void);
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/* pick IOMMU type. returns a pointer to vfio_iommu_type or NULL for error */
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const struct vfio_iommu_type *
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vfio_set_iommu_type(int vfio_container_fd);
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int
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vfio_get_iommu_type(void);
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/* check if we have any supported extensions */
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int
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vfio_has_supported_extensions(int vfio_container_fd);
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int vfio_mp_sync_setup(void);
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#define EAL_VFIO_MP "eal_vfio_mp_sync"
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#define SOCKET_REQ_CONTAINER 0x100
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#define SOCKET_REQ_GROUP 0x200
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#define SOCKET_REQ_DEFAULT_CONTAINER 0x400
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#define SOCKET_REQ_IOMMU_TYPE 0x800
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#define SOCKET_OK 0x0
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#define SOCKET_NO_FD 0x1
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#define SOCKET_ERR 0xFF
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struct vfio_mp_param {
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int req;
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int result;
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RTE_STD_C11
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union {
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int group_num;
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int iommu_type_id;
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};
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};
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#endif /* VFIO_PRESENT */
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#endif /* EAL_VFIO_H_ */
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