1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2011 NetApp, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef _IO_IOMMU_H_ 32 #define _IO_IOMMU_H_ 33 34 typedef int (*iommu_init_func_t)(void); 35 typedef void (*iommu_cleanup_func_t)(void); 36 typedef void (*iommu_enable_func_t)(void); 37 typedef void (*iommu_disable_func_t)(void); 38 typedef void *(*iommu_create_domain_t)(vm_paddr_t maxaddr); 39 typedef void (*iommu_destroy_domain_t)(void *domain); 40 typedef uint64_t (*iommu_create_mapping_t)(void *domain, vm_paddr_t gpa, 41 vm_paddr_t hpa, uint64_t len); 42 typedef uint64_t (*iommu_remove_mapping_t)(void *domain, vm_paddr_t gpa, 43 uint64_t len); 44 typedef void (*iommu_add_device_t)(void *domain, uint16_t rid); 45 typedef void (*iommu_remove_device_t)(void *dom, uint16_t rid); 46 typedef void (*iommu_invalidate_tlb_t)(void *dom); 47 48 struct iommu_ops { 49 iommu_init_func_t init; /* module wide */ 50 iommu_cleanup_func_t cleanup; 51 iommu_enable_func_t enable; 52 iommu_disable_func_t disable; 53 54 iommu_create_domain_t create_domain; /* domain-specific */ 55 iommu_destroy_domain_t destroy_domain; 56 iommu_create_mapping_t create_mapping; 57 iommu_remove_mapping_t remove_mapping; 58 iommu_add_device_t add_device; 59 iommu_remove_device_t remove_device; 60 iommu_invalidate_tlb_t invalidate_tlb; 61 }; 62 63 extern const struct iommu_ops iommu_ops_intel; 64 extern const struct iommu_ops iommu_ops_amd; 65 66 void iommu_cleanup(void); 67 void *iommu_host_domain(void); 68 void *iommu_create_domain(vm_paddr_t maxaddr); 69 void iommu_destroy_domain(void *dom); 70 void iommu_create_mapping(void *dom, vm_paddr_t gpa, vm_paddr_t hpa, 71 size_t len); 72 void iommu_remove_mapping(void *dom, vm_paddr_t gpa, size_t len); 73 void iommu_add_device(void *dom, uint16_t rid); 74 void iommu_remove_device(void *dom, uint16_t rid); 75 void iommu_invalidate_tlb(void *domain); 76 #endif 77