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 1.21 2009/05/12 14:18:16 cegger 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 1.21 2009/05/12 14:18:16 cegger 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 <sys/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         device_t sc_wsmousedev;
   83 };
   84 
   85 static int  dzms_match(device_t, cfdata_t, void *);
   86 static void dzms_attach(device_t, device_t, 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, void *, 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(device_t parent, cfdata_t cf, void *aux)
  104 {
  105         struct dzkm_attach_args *daa = aux;
  106 
  107         /* Exact match is better than wildcard. */
  108         if (cf->cf_loc[DZCF_LINE] == daa->daa_line)
  109                 return 2;
  110 
  111         /* This driver accepts wildcard. */
  112         if (cf->cf_loc[DZCF_LINE] == DZCF_LINE_DEFAULT)
  113                 return 1;
  114 
  115         return 0;
  116 }
  117 
  118 static void
  119 dzms_attach(device_t parent, device_t self, void *aux)
  120 {
  121         struct dz_softc *dz = device_private(parent);
  122         struct dzms_softc *dzms = device_private(self);
  123         struct dzkm_attach_args *daa = aux;
  124         struct dz_linestate *ls;
  125         struct wsmousedev_attach_args a;
  126 
  127         dz->sc_dz[daa->daa_line].dz_catch = dzms_input;
  128         dz->sc_dz[daa->daa_line].dz_private = dzms;
  129         ls = &dz->sc_dz[daa->daa_line];
  130         dzms->dzms_ls = ls;
  131 
  132         printf("\n");
  133 
  134         a.accessops = &dzms_accessops;
  135         a.accesscookie = dzms;
  136 
  137         dzms->sc_enabled = 0;
  138         dzms->sc_selftest = 0;
  139         dzms->sc_wsmousedev = config_found(self, &a, wsmousedevprint);
  140 }
  141 
  142 static int
  143 dzms_enable(void *v)
  144 {
  145         struct dzms_softc *sc = v;
  146 
  147         if (sc->sc_enabled)
  148                 return EBUSY;
  149 
  150         sc->sc_selftest = 4; /* wait for 4 byte reply upto 1/2 sec */
  151         dzputc(sc->dzms_ls, MOUSE_SELF_TEST);
  152         (void)tsleep(dzms_enable, TTIPRI, "dzmsopen", hz / 2);
  153         if (sc->sc_selftest != 0) {
  154                 sc->sc_selftest = 0;
  155                 return ENXIO;
  156         }
  157         DELAY(150);
  158         dzputc(sc->dzms_ls, MOUSE_INCREMENTAL);
  159         sc->sc_enabled = 1;
  160         sc->inputstate = 0;
  161         return 0;
  162 }
  163 
  164 static void
  165 dzms_disable(void *v)
  166 {
  167         struct dzms_softc *sc = v;
  168 
  169         sc->sc_enabled = 0;
  170 }
  171 
  172 static int
  173 dzms_ioctl(void *v, u_long cmd, void *data, int flag, struct lwp *l)
  174 {
  175         if (cmd == WSMOUSEIO_GTYPE) {
  176                 *(u_int *)data = WSMOUSE_TYPE_VSXXX;
  177                 return 0;
  178         }
  179         return EPASSTHROUGH;
  180 }
  181 
  182 static int
  183 dzms_input(void *vsc, int data)
  184 {
  185         struct dzms_softc *sc = vsc;
  186 
  187         if (sc->sc_enabled == 0) {
  188                 if (sc->sc_selftest > 0) {
  189                         sc->sc_selftest -= 1;
  190                         if (sc->sc_selftest == 0)
  191                                 wakeup(dzms_enable);
  192                 }
  193                 return (1);
  194         }
  195 
  196 #define WSMS_BUTTON1    0x01
  197 #define WSMS_BUTTON2    0x02
  198 #define WSMS_BUTTON3    0x04
  199 
  200         if ((data & MOUSE_START_FRAME) != 0)
  201                 sc->inputstate = 1;
  202         else
  203                 sc->inputstate++;
  204 
  205         if (sc->inputstate == 1) {
  206                 sc->buttons = 0;
  207                 if ((data & LEFT_BUTTON) != 0)
  208                         sc->buttons |= WSMS_BUTTON1;
  209                 if ((data & MIDDLE_BUTTON) != 0)
  210                         sc->buttons |= WSMS_BUTTON2;
  211                 if ((data & RIGHT_BUTTON) != 0)
  212                         sc->buttons |= WSMS_BUTTON3;
  213 
  214                 sc->dx = data & MOUSE_X_SIGN;
  215                 sc->dy = data & MOUSE_Y_SIGN;
  216         } else if (sc->inputstate == 2) {
  217                 if (sc->dx == 0)
  218                         sc->dx = -data;
  219                 else
  220                         sc->dx = data;
  221         } else if (sc->inputstate == 3) {
  222                 sc->inputstate = 0;
  223                 if (sc->dy == 0)
  224                         sc->dy = -data;
  225                 else
  226                         sc->dy = data;
  227                 wsmouse_input(sc->sc_wsmousedev,
  228                                 sc->buttons,
  229                                 sc->dx, sc->dy, 0, 0,
  230                                 WSMOUSE_INPUT_DELTA);
  231         }
  232 
  233         return(1);
  234 }
  235 

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