FreeBSD/Linux Kernel Cross Reference
sys/dev/cxgb/sys/mvec.h
1 /*-
2 * Copyright (c) 2007, 2009 Kip Macy <kmacy@freebsd.org>
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, 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.
13 *
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
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: releng/11.1/sys/dev/cxgb/sys/mvec.h 237263 2012-06-19 07:34:13Z np $
27 *
28 */
29
30 #ifndef _MVEC_H_
31 #define _MVEC_H_
32 #include <machine/bus.h>
33
34 static __inline void
35 busdma_map_mbuf_fast(bus_dma_tag_t tag, bus_dmamap_t map,
36 struct mbuf *m, bus_dma_segment_t *seg)
37 {
38 #if defined(__i386__) || defined(__amd64__)
39 seg->ds_addr = pmap_kextract(mtod(m, vm_offset_t));
40 seg->ds_len = m->m_len;
41 #else
42 int nsegstmp;
43
44 bus_dmamap_load_mbuf_sg(tag, map, m, seg, &nsegstmp, 0);
45 #endif
46 }
47
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);
52
53 static __inline void
54 m_freem_list(struct mbuf *m)
55 {
56 struct mbuf *n;
57
58 while (m != NULL) {
59 n = m->m_nextpkt;
60 if (n != NULL)
61 prefetch(n);
62 m_freem(m);
63 m = n;
64 }
65 }
66
67 #endif /* _MVEC_H_ */
Cache object: 131f6167bc8268150ec02c81a42f10c9
|