1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2013-2015 The FreeBSD Foundation 5 * 6 * This software was developed by Konstantin Belousov <kib@FreeBSD.org> 7 * under sponsorship from the FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #ifndef __X86_IOMMU_X86_IOMMU_H 32 #define __X86_IOMMU_X86_IOMMU_H 33 34 /* Both Intel and AMD are not too crazy to have different sizes. */ 35 typedef struct iommu_pte { 36 uint64_t pte; 37 } iommu_pte_t; 38 39 #define IOMMU_PAGE_SIZE PAGE_SIZE 40 #define IOMMU_PAGE_MASK (IOMMU_PAGE_SIZE - 1) 41 #define IOMMU_PAGE_SHIFT PAGE_SHIFT 42 #define IOMMU_NPTEPG (IOMMU_PAGE_SIZE / sizeof(iommu_pte_t)) 43 #define IOMMU_NPTEPGSHIFT 9 44 #define IOMMU_PTEMASK (IOMMU_NPTEPG - 1) 45 46 struct sf_buf; 47 struct vm_object; 48 49 struct vm_page *iommu_pgalloc(struct vm_object *obj, vm_pindex_t idx, 50 int flags); 51 void iommu_pgfree(struct vm_object *obj, vm_pindex_t idx, int flags); 52 void *iommu_map_pgtbl(struct vm_object *obj, vm_pindex_t idx, int flags, 53 struct sf_buf **sf); 54 void iommu_unmap_pgtbl(struct sf_buf *sf); 55 56 extern iommu_haddr_t iommu_high; 57 extern int iommu_tbl_pagecnt; 58 59 SYSCTL_DECL(_hw_iommu); 60 SYSCTL_DECL(_hw_iommu_dmar); 61 62 #endif 63