hyperv_busdma.h revision 303975
1/*- 2 * Copyright (c) 2016 Microsoft Corp. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice unmodified, this list of conditions, and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD: releng/11.0/sys/dev/hyperv/include/hyperv_busdma.h 300478 2016-05-23 06:35:11Z sephe $ 27 */ 28 29#ifndef _HYPERV_BUSDMA_H_ 30#define _HYPERV_BUSDMA_H_ 31 32struct hyperv_dma { 33 bus_addr_t hv_paddr; 34 bus_dma_tag_t hv_dtag; 35 bus_dmamap_t hv_dmap; 36}; 37 38void hyperv_dma_map_paddr(void *arg, bus_dma_segment_t *segs, int nseg, 39 int error); 40void *hyperv_dmamem_alloc(bus_dma_tag_t parent_dtag, bus_size_t alignment, 41 bus_addr_t boundary, bus_size_t size, struct hyperv_dma *dma, 42 int flags); 43void hyperv_dmamem_free(struct hyperv_dma *dma, void *ptr); 44 45#endif /* !_HYPERV_BUSDMA_H_ */ 46