1 /* $NetBSD: shmifvar.h,v 1.10 2014/09/17 04:20:58 ozaki-r Exp $ */ 2 3 /*- 4 * Copyright (c) 2009, 2010 Antti Kantee. All Rights Reserved. 5 * 6 * Development of this software was supported by The Nokia Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 18 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef _RUMP_NET_SHMIFVAR_H_ 31 #define _RUMP_NET_SHMIFVAR_H_ 32 33 #define SHMIF_MAGIC 0xca11d054 34 #define SHMIF_VERSION 3 35 36 struct shmif_mem { 37 uint32_t shm_magic; 38 uint32_t shm_version; 39 40 uint64_t shm_gen; 41 42 uint32_t shm_first; 43 uint32_t shm_last; 44 45 uint32_t shm_lock; 46 uint32_t shm_spare[1]; 47 48 uint8_t shm_data[0]; 49 }; 50 51 #define IFMEM_DATA (offsetof(struct shmif_mem, shm_data)) 52 #define IFMEM_WAKEUP (offsetof(struct shmif_mem, shm_version)) 53 54 struct shmif_pkthdr { 55 uint32_t sp_len; 56 57 uint32_t sp_sec; 58 uint32_t sp_usec; 59 60 uint64_t sp_sender; 61 }; 62 63 #define BUSMEM_SIZE (1024*1024) 64 #define BUSMEM_DATASIZE (BUSMEM_SIZE - sizeof(struct shmif_mem)) 65 66 #if 0 67 #ifdef _KERNEL 68 #include <rump/rumpuser.h> 69 #define DPRINTF(x) rumpuser_dprintf x 70 #else 71 #include <stdio.h> 72 #define DPRINTF(x) printf x 73 #endif 74 #else 75 #define DPRINTF(x) 76 #endif 77 78 uint32_t shmif_advance(uint32_t, uint32_t); 79 uint32_t shmif_busread(struct shmif_mem *, 80 void *, uint32_t, size_t, bool *); 81 void shmif_advancefirst(struct shmif_mem *, uint32_t, size_t); 82 uint32_t shmif_buswrite(struct shmif_mem *, uint32_t, 83 void *, size_t, bool *); 84 uint32_t shmif_nextpktoff(struct shmif_mem *, uint32_t); 85 86 #endif 87