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 * This file and its contents are supplied under the terms of the 32 * Common Development and Distribution License ("CDDL"), version 1.0. 33 * You may only use this file in accordance with the terms of version 34 * 1.0 of the CDDL. 35 * 36 * A full copy of the text of the CDDL should have accompanied this 37 * source. A copy of the CDDL is also available via the Internet at 38 * http://www.illumos.org/license/CDDL. 39 * 40 * Copyright 2022 Oxide Computer Company 41 */ 42 43 #ifndef _IO_IOMMU_H_ 44 #define _IO_IOMMU_H_ 45 46 typedef int (*iommu_init_func_t)(void); 47 typedef void (*iommu_cleanup_func_t)(void); 48 typedef void (*iommu_enable_func_t)(void); 49 typedef void (*iommu_disable_func_t)(void); 50 typedef void *(*iommu_create_domain_t)(vm_paddr_t maxaddr); 51 typedef void (*iommu_destroy_domain_t)(void *domain); 52 typedef uint64_t (*iommu_create_mapping_t)(void *domain, vm_paddr_t gpa, 53 vm_paddr_t hpa, uint64_t len); 54 typedef uint64_t (*iommu_remove_mapping_t)(void *domain, vm_paddr_t gpa, 55 uint64_t len); 56 typedef void (*iommu_add_device_t)(void *domain, uint16_t rid); 57 typedef void (*iommu_remove_device_t)(void *domain, uint16_t rid); 58 typedef void (*iommu_invalidate_tlb_t)(void *domain); 59 60 struct iommu_ops { 61 iommu_init_func_t init; /* module wide */ 62 iommu_cleanup_func_t cleanup; 63 iommu_enable_func_t enable; 64 iommu_disable_func_t disable; 65 66 iommu_create_domain_t create_domain; /* domain-specific */ 67 iommu_destroy_domain_t destroy_domain; 68 iommu_create_mapping_t create_mapping; 69 iommu_remove_mapping_t remove_mapping; 70 iommu_add_device_t add_device; 71 iommu_remove_device_t remove_device; 72 iommu_invalidate_tlb_t invalidate_tlb; 73 }; 74 75 #define IOMMU_OPS_SYM_NAME "vmm_iommu_ops" 76 77 void *iommu_host_domain(void); 78 void *iommu_create_domain(vm_paddr_t maxaddr); 79 void iommu_destroy_domain(void *domain); 80 void iommu_create_mapping(void *domain, vm_paddr_t gpa, vm_paddr_t hpa, 81 size_t len); 82 void iommu_remove_mapping(void *domain, vm_paddr_t gpa, size_t len); 83 void iommu_add_device(void *domain, uint16_t rid); 84 void iommu_remove_device(void *domain, uint16_t rid); 85 void iommu_invalidate_tlb(void *domain); 86 87 /* Glue functions used by iommu provider(s) */ 88 void *vmm_ptp_alloc(void); 89 void vmm_ptp_free(void *); 90 91 #endif 92