73 lines
2.5 KiB
C
73 lines
2.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2013 The FreeBSD Foundation
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*
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* This software was developed by Konstantin Belousov <kib@FreeBSD.org>
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* under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef __X86_IOMMU_BUSDMA_DMAR_H
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#define __X86_IOMMU_BUSDMA_DMAR_H
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#include <dev/iommu/iommu.h>
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#include <dev/iommu/iommu_gas.h>
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struct bus_dma_tag_iommu {
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struct bus_dma_tag_common common;
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struct iommu_ctx *ctx;
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device_t owner;
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int map_count;
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bus_dma_segment_t *segments;
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};
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struct bus_dmamap_iommu {
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struct bus_dma_tag_iommu *tag;
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struct memdesc mem;
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bus_dmamap_callback_t *callback;
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void *callback_arg;
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struct mtx lock;
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struct iommu_map_entries_tailq map_entries;
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TAILQ_ENTRY(bus_dmamap_iommu) delay_link;
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bool locked;
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bool cansleep;
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int flags;
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#ifdef KMSAN
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struct memdesc kmsan_mem;
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#endif
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};
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#define IOMMU_DMAMAP_INIT(map) mtx_init(&(map)->lock, \
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"iommu dmamap", NULL, MTX_DEF)
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#define IOMMU_DMAMAP_DESTROY(map) mtx_destroy(&(map)->lock)
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#define IOMMU_DMAMAP_LOCK(map) mtx_lock(&(map)->lock)
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#define IOMMU_DMAMAP_UNLOCK(map) mtx_unlock(&(map)->lock)
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#define BUS_DMAMAP_IOMMU_MALLOC 0x0001
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#define BUS_DMAMAP_IOMMU_KMEM_ALLOC 0x0002
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extern struct bus_dma_impl bus_dma_iommu_impl;
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#endif
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