mirror of https://github.com/F-Stack/f-stack.git
196 lines
5.3 KiB
C
196 lines
5.3 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef EAL_VFIO_H_
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#define EAL_VFIO_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 <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_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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#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0)
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#define RTE_VFIO_NOIOMMU 8
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#else
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#define RTE_VFIO_NOIOMMU VFIO_NOIOMMU_IOMMU
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#endif
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#define VFIO_MAX_GROUPS 64
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/*
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* Function prototypes for VFIO multiprocess sync functions
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*/
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int vfio_mp_sync_send_request(int socket, int req);
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int vfio_mp_sync_receive_request(int socket);
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int vfio_mp_sync_send_fd(int socket, int fd);
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int vfio_mp_sync_receive_fd(int socket);
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int vfio_mp_sync_connect_to_primary(void);
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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_no;
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int fd;
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int devices;
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};
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struct vfio_config {
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int vfio_enabled;
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int vfio_container_fd;
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int vfio_active_groups;
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struct vfio_group vfio_groups[VFIO_MAX_GROUPS];
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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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struct vfio_iommu_type {
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int type_id;
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const char *name;
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vfio_dma_func_t dma_map_func;
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};
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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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/* 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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/* open container fd or get an existing one */
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int
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vfio_get_container_fd(void);
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/* parse IOMMU group number for a device
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* returns 1 on success, -1 for errors, 0 for non-existent group
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*/
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int
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vfio_get_group_no(const char *sysfs_base,
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const char *dev_addr, int *iommu_group_no);
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/* open group fd or get an existing one */
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int
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vfio_get_group_fd(int iommu_group_no);
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/* remove group fd from internal VFIO group fd array */
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int
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clear_group(int vfio_group_fd);
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int vfio_mp_sync_setup(void);
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#define SOCKET_REQ_CONTAINER 0x100
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#define SOCKET_REQ_GROUP 0x200
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#define SOCKET_CLR_GROUP 0x300
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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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#endif /* VFIO_PRESENT */
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#endif /* EAL_VFIO_H_ */
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