/*-
 * Copyright (c) 2016 Microsoft Corp.
 * All rights reserved. 
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1.  Redistributions of source code must retain the above copyright
 *    notice unmodified, this list of conditions, and the following
 *    disclaimer. 
 * 2.  Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution. 
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 *
 * $FreeBSD$
 */

#ifndef _HYPERV_BUSDMA_H_
#define _HYPERV_BUSDMA_H_

#include <sys/param.h>
#include <sys/bus.h>
#include <machine/bus.h>

struct hyperv_dma {
    bus_addr_t  hv_paddr;
    bus_dma_tag_t       hv_dtag;
    bus_dmamap_t        hv_dmap;
};

void            hyperv_dma_map_paddr(void *arg, bus_dma_segment_t *segs,
                    int nseg, int error);
void            *hyperv_dmamem_alloc(bus_dma_tag_t parent_dtag,
                    bus_size_t alignment, bus_addr_t boundary, bus_size_t size,
                    struct hyperv_dma *dma, int flags);
void            hyperv_dmamem_free(struct hyperv_dma *dma, void *ptr);

#endif  /* !_ HYPERV_BUSDMA_H_ */
