iommu.h revision 331722 
1/*-
2 * Copyright (c) 2011 NetApp, Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: stable/11/sys/amd64/vmm/io/iommu.h 331722 2018-03-29 02:50:57Z eadler $
27 */
28
29#ifndef _IO_IOMMU_H_
30#define	_IO_IOMMU_H_
31
32typedef int (*iommu_init_func_t)(void);
33typedef void (*iommu_cleanup_func_t)(void);
34typedef void (*iommu_enable_func_t)(void);
35typedef void (*iommu_disable_func_t)(void);
36typedef void *(*iommu_create_domain_t)(vm_paddr_t maxaddr);
37typedef void (*iommu_destroy_domain_t)(void *domain);
38typedef uint64_t (*iommu_create_mapping_t)(void *domain, vm_paddr_t gpa,
39					   vm_paddr_t hpa, uint64_t len);
40typedef uint64_t (*iommu_remove_mapping_t)(void *domain, vm_paddr_t gpa,
41					   uint64_t len);
42typedef void (*iommu_add_device_t)(void *domain, uint16_t rid);
43typedef void (*iommu_remove_device_t)(void *dom, uint16_t rid);
44typedef void (*iommu_invalidate_tlb_t)(void *dom);
45
46struct iommu_ops {
47	iommu_init_func_t	init;		/* module wide */
48	iommu_cleanup_func_t	cleanup;
49	iommu_enable_func_t	enable;
50	iommu_disable_func_t	disable;
51
52	iommu_create_domain_t	create_domain;	/* domain-specific */
53	iommu_destroy_domain_t	destroy_domain;
54	iommu_create_mapping_t	create_mapping;
55	iommu_remove_mapping_t	remove_mapping;
56	iommu_add_device_t	add_device;
57	iommu_remove_device_t	remove_device;
58	iommu_invalidate_tlb_t	invalidate_tlb;
59};
60
61extern struct iommu_ops iommu_ops_intel;
62extern struct iommu_ops iommu_ops_amd;
63
64void	iommu_cleanup(void);
65void	*iommu_host_domain(void);
66void	*iommu_create_domain(vm_paddr_t maxaddr);
67void	iommu_destroy_domain(void *dom);
68void	iommu_create_mapping(void *dom, vm_paddr_t gpa, vm_paddr_t hpa,
69			     size_t len);
70void	iommu_remove_mapping(void *dom, vm_paddr_t gpa, size_t len);
71void	iommu_add_device(void *dom, uint16_t rid);
72void	iommu_remove_device(void *dom, uint16_t rid);
73void	iommu_invalidate_tlb(void *domain);
74#endif
75