1 /* $NetBSD: devmap.h,v 1.1 2002/02/10 01:57:13 thorpej Exp $ */ 2 3 /* 4 * Copyright 1997 5 * Digital Equipment Corporation. All rights reserved. 6 * 7 * This software is furnished under license and may be used and 8 * copied only in accordance with the following terms and conditions. 9 * Subject to these conditions, you may download, copy, install, 10 * use, modify and distribute this software in source and/or binary 11 * form. No title or ownership is transferred hereby. 12 * 13 * 1) Any source code used, modified or distributed must reproduce 14 * and retain this copyright notice and list of conditions as 15 * they appear in the source file. 16 * 17 * 2) No right is granted to use any trade name, trademark, or logo of 18 * Digital Equipment Corporation. Neither the "Digital Equipment 19 * Corporation" name nor any trademark or logo of Digital Equipment 20 * Corporation may be used to endorse or promote products derived 21 * from this software without the prior written permission of 22 * Digital Equipment Corporation. 23 * 24 * 3) This software is provided "AS-IS" and any express or implied 25 * warranties, including but not limited to, any implied warranties 26 * of merchantability, fitness for a particular purpose, or 27 * non-infringement are disclaimed. In no event shall DIGITAL be 28 * liable for any damages whatsoever, and in particular, DIGITAL 29 * shall not be liable for special, indirect, consequential, or 30 * incidental damages or damages for lost profits, loss of 31 * revenue or loss of use, whether such damages arise in contract, 32 * negligence, tort, under statute, in equity, at law or otherwise, 33 * even if advised of the possibility of such damage. 34 */ 35 36 /* 37 ** devmap.h -- device memory mapping definitions 38 ** 39 ** <-----------------map size-------------------------> 40 ** <--internal offset--><--internal size--> 41 ** |--------------------|------------------|----------| 42 ** v v v v 43 ** page device device page 44 ** start memory memory end 45 ** (map offset) start end 46 */ 47 48 #ifndef _DEVMAP_H_ 49 #define _DEVMAP_H_ 50 51 #include <sys/types.h> 52 53 #define MAP_INFO_UNKNOWN -1 54 #define MAP_IOCTL 0 55 #define MAP_MMAP 1 56 #define MAP_I386_IOMAP 3 57 58 struct map_info { 59 int method; /* Mapping method - eg. IOCTL, MMAP, or I386_IOMAP */ 60 u_long size; /* size of region, in bus-space units */ 61 union { 62 long maxmapinfo[64/sizeof(long)]; 63 struct { 64 int placeholder; /* nothing needed */ 65 } map_info_ioctl; /* used for ioctl method */ 66 struct { 67 off_t map_offset; /* offset to be given to mmap, page aligned */ 68 size_t map_size; /* size to be given to mmap, page aligned */ 69 off_t internal_offset; /* internal offset in mapped rgn to data */ 70 size_t internal_size; /* actual size of accessible region */ 71 } map_info_mmap; /* used for mmap'd methods */ 72 struct { 73 u_long start_port; 74 } map_info_i386_iomap; 75 } u; 76 }; 77 78 #endif /* _DEVMAP_H_ */ 79