shmifvar.h revision 1.4 1 1.4 pooka /* $NetBSD: shmifvar.h,v 1.4 2010/08/13 10:13:44 pooka Exp $ */
2 1.1 pooka
3 1.1 pooka /*-
4 1.1 pooka * Copyright (c) 2009 Antti Kantee. All Rights Reserved.
5 1.1 pooka *
6 1.1 pooka * Development of this software was supported by The Nokia Foundation.
7 1.1 pooka *
8 1.1 pooka * Redistribution and use in source and binary forms, with or without
9 1.1 pooka * modification, are permitted provided that the following conditions
10 1.1 pooka * are met:
11 1.1 pooka * 1. Redistributions of source code must retain the above copyright
12 1.1 pooka * notice, this list of conditions and the following disclaimer.
13 1.1 pooka * 2. Redistributions in binary form must reproduce the above copyright
14 1.1 pooka * notice, this list of conditions and the following disclaimer in the
15 1.1 pooka * documentation and/or other materials provided with the distribution.
16 1.1 pooka *
17 1.1 pooka * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
18 1.1 pooka * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 1.1 pooka * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 1.1 pooka * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 1.1 pooka * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 1.1 pooka * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
23 1.1 pooka * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 1.1 pooka * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 1.1 pooka * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 1.1 pooka * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 1.1 pooka * SUCH DAMAGE.
28 1.1 pooka */
29 1.1 pooka
30 1.1 pooka #ifndef _RUMP_NET_SHMIFVAR_H_
31 1.1 pooka #define _RUMP_NET_SHMIFVAR_H_
32 1.1 pooka
33 1.2 pooka #define SHMIF_MAGIC 0xca11d054
34 1.4 pooka #define SHMIF_VERSION 2
35 1.2 pooka
36 1.1 pooka struct shmif_mem {
37 1.2 pooka uint32_t shm_magic;
38 1.2 pooka uint32_t shm_version;
39 1.2 pooka
40 1.3 pooka uint64_t shm_gen;
41 1.3 pooka
42 1.2 pooka uint32_t shm_first;
43 1.1 pooka uint32_t shm_last;
44 1.2 pooka
45 1.2 pooka uint32_t shm_lock;
46 1.3 pooka uint32_t shm_spare[1];
47 1.2 pooka
48 1.1 pooka uint8_t shm_data[0];
49 1.1 pooka };
50 1.1 pooka
51 1.1 pooka #define IFMEM_DATA (offsetof(struct shmif_mem, shm_data))
52 1.1 pooka #define IFMEM_WAKEUP (offsetof(struct shmif_mem, shm_version))
53 1.4 pooka
54 1.4 pooka struct shmif_pkthdr {
55 1.4 pooka uint32_t sp_len;
56 1.4 pooka
57 1.4 pooka uint32_t sp_sec;
58 1.4 pooka uint32_t sp_usec;
59 1.4 pooka };
60 1.1 pooka
61 1.3 pooka #define BUSMEM_SIZE (1024*1024)
62 1.3 pooka #define BUSMEM_DATASIZE (BUSMEM_SIZE - sizeof(struct shmif_mem))
63 1.3 pooka
64 1.3 pooka #if 0
65 1.3 pooka #ifdef _KERNEL
66 1.3 pooka #define DPRINTF(x) rumpuser_dprintf x
67 1.3 pooka #else
68 1.3 pooka #define DPRINTF(x) printf x
69 1.3 pooka #endif
70 1.3 pooka #else
71 1.3 pooka #define DPRINTF(x)
72 1.3 pooka #endif
73 1.3 pooka
74 1.3 pooka void shmif_lockbus(struct shmif_mem *);
75 1.3 pooka void shmif_unlockbus(struct shmif_mem *);
76 1.3 pooka uint32_t shmif_advance(uint32_t, uint32_t);
77 1.3 pooka uint32_t shmif_busread(struct shmif_mem *,
78 1.3 pooka void *, uint32_t, size_t, bool *);
79 1.3 pooka void shmif_advancefirst(struct shmif_mem *, uint32_t, size_t);
80 1.3 pooka uint32_t shmif_buswrite(struct shmif_mem *, uint32_t,
81 1.3 pooka void *, size_t, bool *);
82 1.3 pooka uint32_t shmif_nextpktoff(struct shmif_mem *, uint32_t);
83 1.3 pooka
84 1.1 pooka #endif
85