1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1985,1997-1998 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 /* 28 * This file is used by the code of a virtual user input device 29 * (vuid) state maintainence package (see ../sundev/vuid_event.h for a 30 * description of what vuid is) and is private to that implementation. 31 * It implements the interface defined by ../sunwindowdev/vuid_state.h. 32 */ 33 34 #ifndef _SYS_VUID_STORE_H 35 #define _SYS_VUID_STORE_H 36 37 #pragma ident "%Z%%M% %I% %E% SMI" 38 39 #ifdef __cplusplus 40 extern "C" { 41 #endif 42 43 /* 44 * The typical struct vuid_seg state list contains 2 segments: 45 * 46 * First, the VKEY_FIRST segment with four values in its list, 47 * LOC_*_ABSOLUTE and LOC_*_DELTA. The rest of the values are 48 * booleans. The vuid storage package know to update the 49 * LOC_*_ABSOLUTE value when its gets a LOC_*_DELTA and visa 50 * versa. 51 * The ascii/meta segment has all booleans. 52 * 53 * The implementation is skewed to optimize the space usage but 54 * still be efficient in terms of accessing short vuid_value lists 55 * (e.g., during high volume mouse tracking) and gang requests 56 * about the state of shift buttons. 57 */ 58 59 /* 60 * A component of virutal user input device (vuid) state storage. 61 * A struct vuid_value holds a single non-boolean value. 62 */ 63 typedef struct vuid_value { 64 struct vuid_value *next; /* Next node in list */ 65 ushort_t offset; /* Offset of value from seg addr */ 66 int value; /* Value */ 67 } Vuid_value; 68 #define VUID_VALUE_NULL ((Vuid_value *)0) 69 70 #define BITSPERBYTE 8 71 #define VUID_BIT_ARRAY_SIZE (VUID_SEG_SIZE/((sizeof (char))*BITSPERBYTE)) 72 /* 73 * A component of virutal user input device (vuid) state storage. 74 * A struct vuid_seg contains all the values for a vuid segment. 75 * Neither the vuid_seg list or the vuid_value list will be sorted 76 * unless a performance problem is identified. As a new event is 77 * sent to vuid_set_value, so the lists grow. 78 */ 79 typedef struct vuid_seg { 80 struct vuid_seg *next; /* Next state segment in list */ 81 ushort_t addr; /* Starting address of segment */ 82 char booleans[VUID_BIT_ARRAY_SIZE]; 83 /* Up/down value of boolean codes */ 84 char ints[VUID_BIT_ARRAY_SIZE]; 85 /* In/not in list */ 86 struct vuid_value *list; /* Linked list of values of */ 87 /* non-boolean codes. If a code is */ 88 /* in this list, the boolean value is */ 89 /* ignored and the corresponding bit */ 90 /* in values is on. */ 91 } Vuid_seg; 92 #define VUID_SEG_NULL ((Vuid_seg *)0) 93 #define vuid_cstate_to_state(cstate) ((Vuid_seg *)cstate) 94 95 #define vuid_set_boolean_bit(seg, offset) \ 96 (seg)->booleans[(offset)/BITSPERBYTE] |= \ 97 (1<<((BITSPERBYTE-1)-((offset)%BITSPERBYTE))) 98 #define vuid_clear_boolean_bit(seg, offset) \ 99 (seg)->booleans[(offset)/BITSPERBYTE] &= \ 100 (~(1<<((BITSPERBYTE-1)-((offset)%BITSPERBYTE)))) 101 #define vuid_get_boolean_bit(seg, offset) \ 102 ((seg)->booleans[(offset)/BITSPERBYTE] & \ 103 (1<<((BITSPERBYTE-1)-((offset)%BITSPERBYTE)))) 104 105 #define vuid_set_int_bit(seg, offset) \ 106 (seg)->ints[(offset)/BITSPERBYTE] |= \ 107 (1<<((BITSPERBYTE-1)-((offset)%BITSPERBYTE))) 108 #define vuid_clear_int_bit(seg, offset) \ 109 (seg)->ints[(offset)/BITSPERBYTE] &= \ 110 (~(1<<((BITSPERBYTE-1)-((offset)%BITSPERBYTE)))) 111 #define vuid_get_int_bit(seg, offset) \ 112 ((seg)->ints[(offset)/BITSPERBYTE] & \ 113 (1<<((BITSPERBYTE-1)-((offset)%BITSPERBYTE)))) 114 115 #ifdef __cplusplus 116 } 117 #endif 118 119 #endif /* _SYS_VUID_STORE_H */ 120