1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2013 The FreeBSD Foundation 5 * 6 * This software was developed by Konstantin Belousov <kib@FreeBSD.org> 7 * under sponsorship from the FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $FreeBSD$ 31 */ 32 33 #ifndef __X86_IOMMU_BUSDMA_DMAR_H 34 #define __X86_IOMMU_BUSDMA_DMAR_H 35 36 #include <dev/iommu/iommu.h> 37 #include <dev/iommu/iommu_gas.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 #ifdef KMSAN 58 struct memdesc kmsan_mem; 59 #endif 60 }; 61 62 #define BUS_DMAMAP_IOMMU_MALLOC 0x0001 63 #define BUS_DMAMAP_IOMMU_KMEM_ALLOC 0x0002 64 65 extern struct bus_dma_impl bus_dma_iommu_impl; 66 67 #endif 68