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