116 lines
4.0 KiB
C
116 lines
4.0 KiB
C
/* $NetBSD: msvar.h,v 1.5 2003/08/07 16:31:26 agc Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratory.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ms.c 8.1 (Berkeley) 6/11/93
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*/
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/*
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* How many input characters we can buffer.
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* The port-specific var.h may override this.
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* Note: must be a power of two!
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*/
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#define MS_RX_RING_SIZE 256
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#define MS_RX_RING_MASK (MS_RX_RING_SIZE-1)
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/*
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* Output buffer. Only need a few chars.
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*/
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#define MS_TX_RING_SIZE 16
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#define MS_TX_RING_MASK (MS_TX_RING_SIZE-1)
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/*
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* mouse serial line speed defaults to 1200 bps.
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*/
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#define MS_DEFAULT_BPS 1200
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/*
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* Mouse state. A Mouse Systems mouse is a fairly simple device,
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* producing five-byte blobs of the form:
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*
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* b dx dy dx dy
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*
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* where b is the button state, encoded as 0x80|(~buttons)---there are
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* three buttons (4=left, 2=middle, 1=right)---and dx,dy are X and Y
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* delta values, none of which have are in [0x80..0x87]. (This lets
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* us sync up with the mouse after an error.)
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*/
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struct ms_softc {
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struct device ms_dev; /* required first: base device */
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struct zs_chanstate *ms_cs;
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/*
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* The deviopen and deviclose routines are provided
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* by the lower level driver and used as a back door
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* when opening and closing the internal device.
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*/
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int (*ms_deviopen) __P((struct device *, int));
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int (*ms_deviclose) __P((struct device *, int));
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/* Flags to communicate with ms_softintr() */
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volatile int ms_intr_flags;
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#define INTR_RX_OVERRUN 1
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#define INTR_TX_EMPTY 2
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#define INTR_ST_CHECK 4
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/*
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* The receive ring buffer.
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*/
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u_int ms_rbget; /* ring buffer `get' index */
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volatile u_int ms_rbput; /* ring buffer `put' index */
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u_short ms_rbuf[MS_RX_RING_SIZE]; /* rr1, data pairs */
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/*
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* State of input translator
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*/
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short ms_byteno; /* input byte number, for decode */
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char ms_mb; /* mouse button state */
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char ms_ub; /* user button state */
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int ms_dx; /* delta-x */
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int ms_dy; /* delta-y */
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/*
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* State of upper interface.
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*/
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volatile int ms_ready; /* event queue is ready */
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struct evvar ms_events; /* event queue state */
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struct device *ms_wsmousedev;
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};
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/* front-end call back for mouse input */
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void ms_input __P((struct ms_softc *, int c));
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