sysmouse.c

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    1 /*-
    2  * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer as
   10  *    the first lines of this file unmodified.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
   16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   18  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   25  *
   26  */
   27 
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD: releng/9.0/sys/dev/syscons/sysmouse.c 199881 2009-11-28 16:25:55Z ed $");
   30 
   31 #include "opt_syscons.h"
   32 
   33 #include <sys/param.h>
   34 #include <sys/systm.h>
   35 #include <sys/priv.h>
   36 #include <sys/serial.h>
   37 #include <sys/tty.h>
   38 #include <sys/ttydefaults.h>
   39 #include <sys/kernel.h>
   40 #include <sys/consio.h>
   41 #include <sys/mouse.h>
   42 
   43 #include <dev/syscons/syscons.h>
   44 
   45 #ifndef SC_NO_SYSMOUSE
   46 
   47 /* local variables */
   48 static struct tty       *sysmouse_tty;
   49 static int              mouse_level;    /* sysmouse protocol level */
   50 static mousestatus_t    mouse_status;
   51 
   52 static void
   53 smdev_close(struct tty *tp)
   54 {
   55         mouse_level = 0;
   56 }
   57 
   58 static int
   59 smdev_ioctl(struct tty *tp, u_long cmd, caddr_t data, struct thread *td)
   60 {
   61         mousehw_t *hw;
   62         mousemode_t *mode;
   63 
   64         switch (cmd) {
   65 
   66         case MOUSE_GETHWINFO:   /* get device information */
   67                 hw = (mousehw_t *)data;
   68                 hw->buttons = 10;               /* XXX unknown */
   69                 hw->iftype = MOUSE_IF_SYSMOUSE;
   70                 hw->type = MOUSE_MOUSE;
   71                 hw->model = MOUSE_MODEL_GENERIC;
   72                 hw->hwid = 0;
   73                 return 0;
   74 
   75         case MOUSE_GETMODE:     /* get protocol/mode */
   76                 mode = (mousemode_t *)data;
   77                 mode->level = mouse_level;
   78                 switch (mode->level) {
   79                 case 0: /* emulate MouseSystems protocol */
   80                         mode->protocol = MOUSE_PROTO_MSC;
   81                         mode->rate = -1;                /* unknown */
   82                         mode->resolution = -1;  /* unknown */
   83                         mode->accelfactor = 0;  /* disabled */
   84                         mode->packetsize = MOUSE_MSC_PACKETSIZE;
   85                         mode->syncmask[0] = MOUSE_MSC_SYNCMASK;
   86                         mode->syncmask[1] = MOUSE_MSC_SYNC;
   87                         break;
   88 
   89                 case 1: /* sysmouse protocol */
   90                         mode->protocol = MOUSE_PROTO_SYSMOUSE;
   91                         mode->rate = -1;
   92                         mode->resolution = -1;
   93                         mode->accelfactor = 0;
   94                         mode->packetsize = MOUSE_SYS_PACKETSIZE;
   95                         mode->syncmask[0] = MOUSE_SYS_SYNCMASK;
   96                         mode->syncmask[1] = MOUSE_SYS_SYNC;
   97                         break;
   98                 }
   99                 return 0;
  100 
  101         case MOUSE_SETMODE:     /* set protocol/mode */
  102                 mode = (mousemode_t *)data;
  103                 if (mode->level == -1)
  104                         ;       /* don't change the current setting */
  105                 else if ((mode->level < 0) || (mode->level > 1))
  106                         return EINVAL;
  107                 else
  108                         mouse_level = mode->level;
  109                 return 0;
  110 
  111         case MOUSE_GETLEVEL:    /* get operation level */
  112                 *(int *)data = mouse_level;
  113                 return 0;
  114 
  115         case MOUSE_SETLEVEL:    /* set operation level */
  116                 if ((*(int *)data  < 0) || (*(int *)data > 1))
  117                         return EINVAL;
  118                 mouse_level = *(int *)data;
  119                 return 0;
  120 
  121         case MOUSE_GETSTATUS:   /* get accumulated mouse events */
  122                 *(mousestatus_t *)data = mouse_status;
  123                 mouse_status.flags = 0;
  124                 mouse_status.obutton = mouse_status.button;
  125                 mouse_status.dx = 0;
  126                 mouse_status.dy = 0;
  127                 mouse_status.dz = 0;
  128                 return 0;
  129 
  130 #ifdef notyet
  131         case MOUSE_GETVARS:     /* get internal mouse variables */
  132         case MOUSE_SETVARS:     /* set internal mouse variables */
  133                 return ENODEV;
  134 #endif
  135 
  136         case MOUSE_READSTATE:   /* read status from the device */
  137         case MOUSE_READDATA:    /* read data from the device */
  138                 return ENODEV;
  139         }
  140 
  141         return (ENOIOCTL);
  142 }
  143 
  144 static int
  145 smdev_param(struct tty *tp, struct termios *t)
  146 {
  147 
  148         /*
  149          * Set the output baud rate to zero. The mouse device supports
  150          * no output, so we don't want to waste buffers.
  151          */
  152         t->c_ispeed = TTYDEF_SPEED;
  153         t->c_ospeed = B0;
  154 
  155         return (0);
  156 }
  157 
  158 static struct ttydevsw smdev_ttydevsw = {
  159         .tsw_flags      = TF_NOPREFIX,
  160         .tsw_close      = smdev_close,
  161         .tsw_ioctl      = smdev_ioctl,
  162         .tsw_param      = smdev_param,
  163 };
  164 
  165 static void
  166 sm_attach_mouse(void *unused)
  167 {
  168         sysmouse_tty = tty_alloc(&smdev_ttydevsw, NULL);
  169         tty_makedev(sysmouse_tty, NULL, "sysmouse");
  170 }
  171 
  172 SYSINIT(sysmouse, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sm_attach_mouse, NULL);
  173 
  174 int
  175 sysmouse_event(mouse_info_t *info)
  176 {
  177         /* MOUSE_BUTTON?DOWN -> MOUSE_MSC_BUTTON?UP */
  178         static int butmap[8] = {
  179             MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP,
  180             MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP,
  181             MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON3UP,
  182             MOUSE_MSC_BUTTON3UP,
  183             MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP,
  184             MOUSE_MSC_BUTTON2UP,
  185             MOUSE_MSC_BUTTON1UP,
  186             0,
  187         };
  188         u_char buf[8];
  189         int x, y, z;
  190         int i, flags = 0;
  191 
  192         tty_lock(sysmouse_tty);
  193 
  194         switch (info->operation) {
  195         case MOUSE_ACTION:
  196                 mouse_status.button = info->u.data.buttons;
  197                 /* FALL THROUGH */
  198         case MOUSE_MOTION_EVENT:
  199                 x = info->u.data.x;
  200                 y = info->u.data.y;
  201                 z = info->u.data.z;
  202                 break;
  203         case MOUSE_BUTTON_EVENT:
  204                 x = y = z = 0;
  205                 if (info->u.event.value > 0)
  206                         mouse_status.button |= info->u.event.id;
  207                 else
  208                         mouse_status.button &= ~info->u.event.id;
  209                 break;
  210         default:
  211                 goto done;
  212         }
  213 
  214         mouse_status.dx += x;
  215         mouse_status.dy += y;
  216         mouse_status.dz += z;
  217         mouse_status.flags |= ((x || y || z) ? MOUSE_POSCHANGED : 0)
  218                               | (mouse_status.obutton ^ mouse_status.button);
  219         flags = mouse_status.flags;
  220         if (flags == 0 || !tty_opened(sysmouse_tty))
  221                 goto done;
  222 
  223         /* the first five bytes are compatible with MouseSystems' */
  224         buf[0] = MOUSE_MSC_SYNC
  225                  | butmap[mouse_status.button & MOUSE_STDBUTTONS];
  226         x = imax(imin(x, 255), -256);
  227         buf[1] = x >> 1;
  228         buf[3] = x - buf[1];
  229         y = -imax(imin(y, 255), -256);
  230         buf[2] = y >> 1;
  231         buf[4] = y - buf[2];
  232         for (i = 0; i < MOUSE_MSC_PACKETSIZE; ++i)
  233                 ttydisc_rint(sysmouse_tty, buf[i], 0);
  234         if (mouse_level >= 1) {
  235                 /* extended part */
  236                 z = imax(imin(z, 127), -128);
  237                 buf[5] = (z >> 1) & 0x7f;
  238                 buf[6] = (z - (z >> 1)) & 0x7f;
  239                 /* buttons 4-10 */
  240                 buf[7] = (~mouse_status.button >> 3) & 0x7f;
  241                 for (i = MOUSE_MSC_PACKETSIZE; i < MOUSE_SYS_PACKETSIZE; ++i)
  242                         ttydisc_rint(sysmouse_tty, buf[i], 0);
  243         }
  244         ttydisc_rint_done(sysmouse_tty);
  245 
  246 done:   tty_unlock(sysmouse_tty);
  247         return (flags);
  248 }
  249 
  250 #endif /* !SC_NO_SYSMOUSE */

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FreeBSD/Linux Kernel Cross Reference sys/dev/syscons/sysmouse.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/syscons/sysmouse.c