1 files changed, 49 insertions, 0 deletions
diff --git a/sys/dev/hyperv/include/hyperv_busdma.h b/sys/dev/hyperv/include/hyperv_busdma.h
new file mode 100644
index 0000000..a27d2db
--- /dev/null
+++ b/sys/dev/hyperv/include/hyperv_busdma.h
@@ -0,0 +1,49 @@
+/*-
+ * 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_ */