2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2007, 2009 Kip Macy <kmacy@freebsd.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include <machine/bus.h>
37 busdma_map_mbuf_fast(bus_dma_tag_t tag, bus_dmamap_t map,
38 struct mbuf *m, bus_dma_segment_t *seg)
40 #if defined(__i386__) || defined(__amd64__)
41 seg->ds_addr = pmap_kextract(mtod(m, vm_offset_t));
42 seg->ds_len = m->m_len;
46 bus_dmamap_load_mbuf_sg(tag, map, m, seg, &nsegstmp, 0);
50 int busdma_map_sg_collapse(bus_dma_tag_t tag, bus_dmamap_t map,
51 struct mbuf **m, bus_dma_segment_t *segs, int *nsegs);
52 void busdma_map_sg_vec(bus_dma_tag_t tag, bus_dmamap_t map,
53 struct mbuf *m, bus_dma_segment_t *segs, int *nsegs);
56 m_freem_list(struct mbuf *m)