The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/dec/dzms.c

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    1 /*      $NetBSD: dzms.c,v 1.15 2006/11/12 19:00:43 plunky 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. Neither the name of the University nor the names of its contributors
   25  *    may be used to endorse or promote products derived from this software
   26  *    without specific prior written permission.
   27  *
   28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   38  * SUCH DAMAGE.
   39  *
   40  *      @(#)ms.c        8.1 (Berkeley) 6/11/93
   41  */
   42 
   43 /*
   44  * VSXXX mice attached to line 1 of the DZ*
   45  */
   46 
   47 #include <sys/cdefs.h>
   48 __KERNEL_RCSID(0, "$NetBSD: dzms.c,v 1.15 2006/11/12 19:00:43 plunky Exp $");
   49 
   50 #include <sys/param.h>
   51 #include <sys/systm.h>
   52 #include <sys/device.h>
   53 #include <sys/ioctl.h>
   54 #include <sys/syslog.h>
   55 #include <sys/kernel.h>
   56 #include <sys/proc.h>
   57 #include <sys/tty.h>
   58 
   59 #include <machine/bus.h>
   60 
   61 #include <dev/dec/dzreg.h>
   62 #include <dev/dec/dzvar.h>
   63 #include <dev/dec/dzkbdvar.h>
   64 #include <dev/dec/lk201.h>
   65 
   66 #include <dev/wscons/wsconsio.h>
   67 #include <dev/wscons/wsmousevar.h>
   68 
   69 #include "locators.h"
   70 
   71 struct dzms_softc {             /* driver status information */
   72         struct  device dzms_dev;        /* required first: base device */
   73         struct  dz_linestate *dzms_ls;
   74 
   75         int sc_enabled;         /* input enabled? */
   76         int sc_selftest;
   77 
   78         int inputstate;
   79         u_int buttons;
   80         int dx, dy;
   81 
   82         struct device *sc_wsmousedev;
   83 };
   84 
   85 static int  dzms_match(struct device *, struct cfdata *, void *);
   86 static void dzms_attach(struct device *, struct device *, void *);
   87 static int dzms_input(void *, int);
   88 
   89 CFATTACH_DECL(dzms, sizeof(struct dzms_softc),
   90     dzms_match, dzms_attach, NULL, NULL);
   91 
   92 static int  dzms_enable(void *);
   93 static int  dzms_ioctl(void *, u_long, caddr_t, int, struct lwp *);
   94 static void dzms_disable(void *);
   95 
   96 const struct wsmouse_accessops dzms_accessops = {
   97         dzms_enable,
   98         dzms_ioctl,
   99         dzms_disable,
  100 };
  101 
  102 static int
  103 dzms_match(parent, cf, aux)
  104         struct device *parent;
  105         struct cfdata *cf;
  106         void *aux;
  107 {
  108         struct dzkm_attach_args *daa = aux;
  109 
  110         /* Exact match is better than wildcard. */
  111         if (cf->cf_loc[DZCF_LINE] == daa->daa_line)
  112                 return 2;
  113 
  114         /* This driver accepts wildcard. */
  115         if (cf->cf_loc[DZCF_LINE] == DZCF_LINE_DEFAULT)
  116                 return 1;
  117 
  118         return 0;
  119 }
  120 
  121 static void
  122 dzms_attach(parent, self, aux)
  123         struct device *parent, *self;
  124         void *aux;
  125 {
  126         struct dz_softc *dz = device_private(parent);
  127         struct dzms_softc *dzms = device_private(self);
  128         struct dzkm_attach_args *daa = aux;
  129         struct dz_linestate *ls;
  130         struct wsmousedev_attach_args a;
  131 
  132         dz->sc_dz[daa->daa_line].dz_catch = dzms_input;
  133         dz->sc_dz[daa->daa_line].dz_private = dzms;
  134         ls = &dz->sc_dz[daa->daa_line];
  135         dzms->dzms_ls = ls;
  136 
  137         printf("\n");
  138 
  139         a.accessops = &dzms_accessops;
  140         a.accesscookie = dzms;
  141 
  142         dzms->sc_enabled = 0;
  143         dzms->sc_selftest = 0;
  144         dzms->sc_wsmousedev = config_found(self, &a, wsmousedevprint);
  145 }
  146 
  147 static int
  148 dzms_enable(v)
  149         void *v;
  150 {
  151         struct dzms_softc *sc = v;
  152 
  153         if (sc->sc_enabled)
  154                 return EBUSY;
  155 
  156         sc->sc_selftest = 4; /* wait for 4 byte reply upto 1/2 sec */
  157         dzputc(sc->dzms_ls, MOUSE_SELF_TEST);
  158         (void)tsleep(dzms_enable, TTIPRI, "dzmsopen", hz / 2);
  159         if (sc->sc_selftest != 0) {
  160                 sc->sc_selftest = 0;
  161                 return ENXIO;
  162         }
  163         DELAY(150);
  164         dzputc(sc->dzms_ls, MOUSE_INCREMENTAL);
  165         sc->sc_enabled = 1;
  166         sc->inputstate = 0;
  167         return 0;
  168 }
  169 
  170 static void
  171 dzms_disable(v)
  172         void *v;
  173 {
  174         struct dzms_softc *sc = v;
  175 
  176         sc->sc_enabled = 0;
  177 }
  178 
  179 static int
  180 dzms_ioctl(v, cmd, data, flag, l)
  181         void *v;
  182         u_long cmd;
  183         caddr_t data;
  184         int flag;
  185         struct lwp *l;
  186 {
  187         if (cmd == WSMOUSEIO_GTYPE) {
  188                 *(u_int *)data = WSMOUSE_TYPE_VSXXX;
  189                 return 0;
  190         }
  191         return EPASSTHROUGH;
  192 }
  193 
  194 static int
  195 dzms_input(vsc, data)
  196         void *vsc;
  197         int data;
  198 {
  199         struct dzms_softc *sc = vsc;
  200 
  201         if (sc->sc_enabled == 0) {
  202                 if (sc->sc_selftest > 0) {
  203                         sc->sc_selftest -= 1;
  204                         if (sc->sc_selftest == 0)
  205                                 wakeup(dzms_enable);
  206                 }
  207                 return (1);
  208         }
  209 
  210 #define WSMS_BUTTON1    0x01
  211 #define WSMS_BUTTON2    0x02
  212 #define WSMS_BUTTON3    0x04
  213 
  214         if ((data & MOUSE_START_FRAME) != 0)
  215                 sc->inputstate = 1;
  216         else
  217                 sc->inputstate++;
  218 
  219         if (sc->inputstate == 1) {
  220                 sc->buttons = 0;
  221                 if ((data & LEFT_BUTTON) != 0)
  222                         sc->buttons |= WSMS_BUTTON1;
  223                 if ((data & MIDDLE_BUTTON) != 0)
  224                         sc->buttons |= WSMS_BUTTON2;
  225                 if ((data & RIGHT_BUTTON) != 0)
  226                         sc->buttons |= WSMS_BUTTON3;
  227 
  228                 sc->dx = data & MOUSE_X_SIGN;
  229                 sc->dy = data & MOUSE_Y_SIGN;
  230         } else if (sc->inputstate == 2) {
  231                 if (sc->dx == 0)
  232                         sc->dx = -data;
  233                 else
  234                         sc->dx = data;
  235         } else if (sc->inputstate == 3) {
  236                 sc->inputstate = 0;
  237                 if (sc->dy == 0)
  238                         sc->dy = -data;
  239                 else
  240                         sc->dy = data;
  241                 wsmouse_input(sc->sc_wsmousedev,
  242                                 sc->buttons,
  243                                 sc->dx, sc->dy, 0, 0,
  244                                 WSMOUSE_INPUT_DELTA);
  245         }
  246 
  247         return(1);
  248 }
  249 

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