FreeBSD/Linux Kernel Cross Reference
sys/amd64/vmm/io/iommu.h

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2011 NetApp, Inc.
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. 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.
     *
     * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``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 NETAPP, INC 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.
     *
     * $FreeBSD$
     */
    
    #ifndef _IO_IOMMU_H_
    #define _IO_IOMMU_H_
    
    typedef int (*iommu_init_func_t)(void);
    typedef void (*iommu_cleanup_func_t)(void);
    typedef void (*iommu_enable_func_t)(void);
    typedef void (*iommu_disable_func_t)(void);
    typedef void *(*iommu_create_domain_t)(vm_paddr_t maxaddr);
    typedef void (*iommu_destroy_domain_t)(void *domain);
    typedef uint64_t (*iommu_create_mapping_t)(void *domain, vm_paddr_t gpa,
                                               vm_paddr_t hpa, uint64_t len);
    typedef uint64_t (*iommu_remove_mapping_t)(void *domain, vm_paddr_t gpa,
                                               uint64_t len);
    typedef void (*iommu_add_device_t)(void *domain, uint16_t rid);
    typedef void (*iommu_remove_device_t)(void *dom, uint16_t rid);
    typedef void (*iommu_invalidate_tlb_t)(void *dom);
    
    struct iommu_ops {
            iommu_init_func_t       init;           /* module wide */
            iommu_cleanup_func_t    cleanup;
            iommu_enable_func_t     enable;
            iommu_disable_func_t    disable;
    
            iommu_create_domain_t   create_domain;  /* domain-specific */
            iommu_destroy_domain_t  destroy_domain;
            iommu_create_mapping_t  create_mapping;
            iommu_remove_mapping_t  remove_mapping;
            iommu_add_device_t      add_device;
            iommu_remove_device_t   remove_device;
            iommu_invalidate_tlb_t  invalidate_tlb;
    };
    
    extern const struct iommu_ops iommu_ops_intel;
    extern const struct iommu_ops iommu_ops_amd;
    
    void    iommu_cleanup(void);
    void    *iommu_host_domain(void);
    void    *iommu_create_domain(vm_paddr_t maxaddr);
    void    iommu_destroy_domain(void *dom);
    void    iommu_create_mapping(void *dom, vm_paddr_t gpa, vm_paddr_t hpa,
                                 size_t len);
    void    iommu_remove_mapping(void *dom, vm_paddr_t gpa, size_t len);
    void    iommu_add_device(void *dom, uint16_t rid);
    void    iommu_remove_device(void *dom, uint16_t rid);
    void    iommu_invalidate_tlb(void *domain);
    #endif

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