1 /* $NetBSD: msvar.h,v 1.1 1999/05/14 07:07:16 mrg Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * All advertising materials mentioning features or use of this software 12 * must display the following acknowledgement: 13 * This product includes software developed by the University of 14 * California, Lawrence Berkeley Laboratory. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the University of 27 * California, Berkeley and its contributors. 28 * 4. Neither the name of the University nor the names of its contributors 29 * may be used to endorse or promote products derived from this software 30 * without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 35 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 42 * SUCH DAMAGE. 43 * 44 * @(#)ms.c 8.1 (Berkeley) 6/11/93 45 */ 46 47 /* 48 * How many input characters we can buffer. 49 * The port-specific var.h may override this. 50 * Note: must be a power of two! 51 */ 52 #define MS_RX_RING_SIZE 256 53 #define MS_RX_RING_MASK (MS_RX_RING_SIZE-1) 54 /* 55 * Output buffer. Only need a few chars. 56 */ 57 #define MS_TX_RING_SIZE 16 58 #define MS_TX_RING_MASK (MS_TX_RING_SIZE-1) 59 /* 60 * Keyboard serial line speed is fixed at 1200 bps; mouse serial line 61 * speed defaults to 1200 bps. 62 */ 63 #ifdef SUN_MS_BPS 64 #define MS_BPS SUN_MS_BPS 65 #else 66 #define MS_BPS 1200 67 #endif 68 69 /* 70 * Mouse state. A Mouse Systems mouse is a fairly simple device, 71 * producing five-byte blobs of the form: 72 * 73 * b dx dy dx dy 74 * 75 * where b is the button state, encoded as 0x80|(~buttons)---there are 76 * three buttons (4=left, 2=middle, 1=right)---and dx,dy are X and Y 77 * delta values, none of which have are in [0x80..0x87]. (This lets 78 * us sync up with the mouse after an error.) 79 */ 80 struct ms_softc { 81 struct device ms_dev; /* required first: base device */ 82 struct zs_chanstate *ms_cs; 83 84 /* Flags to communicate with ms_softintr() */ 85 volatile int ms_intr_flags; 86 #define INTR_RX_OVERRUN 1 87 #define INTR_TX_EMPTY 2 88 #define INTR_ST_CHECK 4 89 90 /* 91 * The receive ring buffer. 92 */ 93 u_int ms_rbget; /* ring buffer `get' index */ 94 volatile u_int ms_rbput; /* ring buffer `put' index */ 95 u_short ms_rbuf[MS_RX_RING_SIZE]; /* rr1, data pairs */ 96 97 /* 98 * State of input translator 99 */ 100 short ms_byteno; /* input byte number, for decode */ 101 char ms_mb; /* mouse button state */ 102 char ms_ub; /* user button state */ 103 int ms_dx; /* delta-x */ 104 int ms_dy; /* delta-y */ 105 106 /* 107 * State of upper interface. 108 */ 109 volatile int ms_ready; /* event queue is ready */ 110 struct evvar ms_events; /* event queue state */ 111 }; 112 113 /* front-end call back for mouse input */ 114 void ms_input __P((struct ms_softc *, int c)); 115