2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2013 The FreeBSD Foundation
7 * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
8 * under sponsorship from the FreeBSD Foundation.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #ifndef __X86_IOMMU_BUSDMA_DMAR_H
35 #define __X86_IOMMU_BUSDMA_DMAR_H
37 struct dmar_map_entry;
38 TAILQ_HEAD(dmar_map_entries_tailq, dmar_map_entry);
40 struct bus_dma_tag_dmar {
41 struct bus_dma_tag_common common;
45 bus_dma_segment_t *segments;
48 struct bus_dmamap_dmar {
49 struct bus_dma_tag_dmar *tag;
51 bus_dmamap_callback_t *callback;
53 struct dmar_map_entries_tailq map_entries;
54 TAILQ_ENTRY(bus_dmamap_dmar) delay_link;
60 #define BUS_DMAMAP_DMAR_MALLOC 0x0001
61 #define BUS_DMAMAP_DMAR_KMEM_ALLOC 0x0002
63 extern struct bus_dma_impl bus_dma_dmar_impl;
65 bus_dma_tag_t dmar_get_dma_tag(device_t dev, device_t child);