1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 /* 29 * This file and its contents are supplied under the terms of the 30 * Common Development and Distribution License ("CDDL"), version 1.0. 31 * You may only use this file in accordance with the terms of version 32 * 1.0 of the CDDL. 33 * 34 * A full copy of the text of the CDDL should have accompanied this 35 * source. A copy of the CDDL is also available via the Internet at 36 * http://www.illumos.org/license/CDDL. 37 * 38 * Copyright 2022 Oxide Computer Company 39 */ 40 41 #ifndef _IO_IOMMU_H_ 42 #define _IO_IOMMU_H_ 43 44 typedef int (*iommu_init_func_t)(void); 45 typedef void (*iommu_cleanup_func_t)(void); 46 typedef void (*iommu_enable_func_t)(void); 47 typedef void (*iommu_disable_func_t)(void); 48 typedef void *(*iommu_create_domain_t)(vm_paddr_t maxaddr); 49 typedef void (*iommu_destroy_domain_t)(void *domain); 50 typedef uint64_t (*iommu_create_mapping_t)(void *domain, vm_paddr_t gpa, 51 vm_paddr_t hpa, uint64_t len); 52 typedef uint64_t (*iommu_remove_mapping_t)(void *domain, vm_paddr_t gpa, 53 uint64_t len); 54 typedef void (*iommu_add_device_t)(void *domain, uint16_t rid); 55 typedef void (*iommu_remove_device_t)(void *domain, uint16_t rid); 56 typedef void (*iommu_invalidate_tlb_t)(void *domain); 57 58 struct iommu_ops { 59 iommu_init_func_t init; /* module wide */ 60 iommu_cleanup_func_t cleanup; 61 iommu_enable_func_t enable; 62 iommu_disable_func_t disable; 63 64 iommu_create_domain_t create_domain; /* domain-specific */ 65 iommu_destroy_domain_t destroy_domain; 66 iommu_create_mapping_t create_mapping; 67 iommu_remove_mapping_t remove_mapping; 68 iommu_add_device_t add_device; 69 iommu_remove_device_t remove_device; 70 iommu_invalidate_tlb_t invalidate_tlb; 71 }; 72 73 #define IOMMU_OPS_SYM_NAME "vmm_iommu_ops" 74 75 void *iommu_host_domain(void); 76 void *iommu_create_domain(vm_paddr_t maxaddr); 77 void iommu_destroy_domain(void *domain); 78 void iommu_create_mapping(void *domain, vm_paddr_t gpa, vm_paddr_t hpa, 79 size_t len); 80 void iommu_remove_mapping(void *domain, vm_paddr_t gpa, size_t len); 81 void iommu_add_device(void *domain, uint16_t rid); 82 void iommu_remove_device(void *domain, uint16_t rid); 83 void iommu_invalidate_tlb(void *domain); 84 85 /* Glue functions used by iommu provider(s) */ 86 void *vmm_ptp_alloc(void); 87 void vmm_ptp_free(void *); 88 89 #endif 90