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 #ifdef __cplusplus 38 extern "C" { 39 #endif 40 41 /* 42 * The typical struct vuid_seg state list contains 2 segments: 43 * 44 * First, the VKEY_FIRST segment with four values in its list, 45 * LOC_*_ABSOLUTE and LOC_*_DELTA. The rest of the values are 46 * booleans. The vuid storage package know to update the 47 * LOC_*_ABSOLUTE value when its gets a LOC_*_DELTA and visa 48 * versa. 49 * The ascii/meta segment has all booleans. 50 * 51 * The implementation is skewed to optimize the space usage but 52 * still be efficient in terms of accessing short vuid_value lists 53 * (e.g., during high volume mouse tracking) and gang requests 54 * about the state of shift buttons. 55 */ 56 57 /* 58 * A component of virutal user input device (vuid) state storage. 59 * A struct vuid_value holds a single non-boolean value. 60 */ 61 typedef struct vuid_value { 62 struct vuid_value *next; /* Next node in list */ 63 ushort_t offset; /* Offset of value from seg addr */ 64 int value; /* Value */ 65 } Vuid_value; 66 #define VUID_VALUE_NULL ((Vuid_value *)0) 67 68 #define BITSPERBYTE 8 69 #define VUID_BIT_ARRAY_SIZE (VUID_SEG_SIZE/((sizeof (char))*BITSPERBYTE)) 70 /* 71 * A component of virutal user input device (vuid) state storage. 72 * A struct vuid_seg contains all the values for a vuid segment. 73 * Neither the vuid_seg list or the vuid_value list will be sorted 74 * unless a performance problem is identified. As a new event is 75 * sent to vuid_set_value, so the lists grow. 76 */ 77 typedef struct vuid_seg { 78 struct vuid_seg *next; /* Next state segment in list */ 79 ushort_t addr; /* Starting address of segment */ 80 char booleans[VUID_BIT_ARRAY_SIZE]; 81 /* Up/down value of boolean codes */ 82 char ints[VUID_BIT_ARRAY_SIZE]; 83 /* In/not in list */ 84 struct vuid_value *list; /* Linked list of values of */ 85 /* non-boolean codes. If a code is */ 86 /* in this list, the boolean value is */ 87 /* ignored and the corresponding bit */ 88 /* in values is on. */ 89 } Vuid_seg; 90 #define VUID_SEG_NULL ((Vuid_seg *)0) 91 #define vuid_cstate_to_state(cstate) ((Vuid_seg *)cstate) 92 93 #define vuid_set_boolean_bit(seg, offset) \ 94 (seg)->booleans[(offset)/BITSPERBYTE] |= \ 95 (1<<((BITSPERBYTE-1)-((offset)%BITSPERBYTE))) 96 #define vuid_clear_boolean_bit(seg, offset) \ 97 (seg)->booleans[(offset)/BITSPERBYTE] &= \ 98 (~(1<<((BITSPERBYTE-1)-((offset)%BITSPERBYTE)))) 99 #define vuid_get_boolean_bit(seg, offset) \ 100 ((seg)->booleans[(offset)/BITSPERBYTE] & \ 101 (1<<((BITSPERBYTE-1)-((offset)%BITSPERBYTE)))) 102 103 #define vuid_set_int_bit(seg, offset) \ 104 (seg)->ints[(offset)/BITSPERBYTE] |= \ 105 (1<<((BITSPERBYTE-1)-((offset)%BITSPERBYTE))) 106 #define vuid_clear_int_bit(seg, offset) \ 107 (seg)->ints[(offset)/BITSPERBYTE] &= \ 108 (~(1<<((BITSPERBYTE-1)-((offset)%BITSPERBYTE)))) 109 #define vuid_get_int_bit(seg, offset) \ 110 ((seg)->ints[(offset)/BITSPERBYTE] & \ 111 (1<<((BITSPERBYTE-1)-((offset)%BITSPERBYTE)))) 112 113 #ifdef __cplusplus 114 } 115 #endif 116 117 #endif /* _SYS_VUID_STORE_H */ 118