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 39 struct bus_dma_tag_iommu { 40 struct bus_dma_tag_common common; 41 struct iommu_ctx *ctx; 42 device_t owner; 43 int map_count; 44 bus_dma_segment_t *segments; 45 }; 46 47 struct bus_dmamap_iommu { 48 struct bus_dma_tag_iommu *tag; 49 struct memdesc mem; 50 bus_dmamap_callback_t *callback; 51 void *callback_arg; 52 struct iommu_map_entries_tailq map_entries; 53 TAILQ_ENTRY(bus_dmamap_iommu) delay_link; 54 bool locked; 55 bool cansleep; 56 int flags; 57 }; 58 59 #define BUS_DMAMAP_IOMMU_MALLOC 0x0001 60 #define BUS_DMAMAP_IOMMU_KMEM_ALLOC 0x0002 61 62 extern struct bus_dma_impl bus_dma_iommu_impl; 63 64 bus_dma_tag_t acpi_iommu_get_dma_tag(device_t dev, device_t child); 65 66 #endif 67