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 * $FreeBSD$ 27 */ 28 29 #ifndef _HYPERV_BUSDMA_H_ 30 #define _HYPERV_BUSDMA_H_ 31 32 #include <sys/param.h> 33 #include <sys/bus.h> 34 #include <machine/bus.h> 35 36 struct hyperv_dma { 37 bus_addr_t hv_paddr; 38 bus_dma_tag_t hv_dtag; 39 bus_dmamap_t hv_dmap; 40 }; 41 42 void hyperv_dma_map_paddr(void *arg, bus_dma_segment_t *segs, 43 int nseg, int error); 44 void *hyperv_dmamem_alloc(bus_dma_tag_t parent_dtag, 45 bus_size_t alignment, bus_addr_t boundary, bus_size_t size, 46 struct hyperv_dma *dma, int flags); 47 void hyperv_dmamem_free(struct hyperv_dma *dma, void *ptr); 48 49 #endif /* !_HYPERV_BUSDMA_H_ */ 50