1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2013 The FreeBSD Foundation 5 * All rights reserved. 6 * 7 * This software was developed by Konstantin Belousov <kib@FreeBSD.org> 8 * under sponsorship from the FreeBSD Foundation. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 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. 18 * 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 29 * SUCH DAMAGE. 30 * 31 * $FreeBSD$ 32 */ 33 34 #ifndef __X86_IOMMU_BUSDMA_DMAR_H 35 #define __X86_IOMMU_BUSDMA_DMAR_H 36 37 #include <dev/iommu/iommu.h> 38 #include <dev/iommu/iommu_gas.h> 39 40 struct bus_dma_tag_iommu { 41 struct bus_dma_tag_common common; 42 struct iommu_ctx *ctx; 43 device_t owner; 44 int map_count; 45 bus_dma_segment_t *segments; 46 }; 47 48 struct bus_dmamap_iommu { 49 struct bus_dma_tag_iommu *tag; 50 struct memdesc mem; 51 bus_dmamap_callback_t *callback; 52 void *callback_arg; 53 struct iommu_map_entries_tailq map_entries; 54 TAILQ_ENTRY(bus_dmamap_iommu) delay_link; 55 bool locked; 56 bool cansleep; 57 int flags; 58 }; 59 60 #define BUS_DMAMAP_IOMMU_MALLOC 0x0001 61 #define BUS_DMAMAP_IOMMU_KMEM_ALLOC 0x0002 62 63 extern struct bus_dma_impl bus_dma_iommu_impl; 64 65 #endif 66