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  * $FreeBSD: releng/5.0/sys/dev/syscons/sysmouse.c 93593 2002-04-01 21:31:13Z jhb $
   27  */
   28 
   29 #include "opt_syscons.h"
   30 
   31 #include <sys/param.h>
   32 #include <sys/systm.h>
   33 #include <sys/conf.h>
   34 #include <sys/tty.h>
   35 #include <sys/kernel.h>
   36 #include <sys/consio.h>
   37 #include <sys/mouse.h>
   38 
   39 #include <dev/syscons/syscons.h>
   40 
   41 #ifndef SC_NO_SYSMOUSE
   42 
   43 #define CDEV_MAJOR      12              /* major number, shared with syscons */
   44 #define SC_MOUSE        128             /* minor number */
   45 
   46 static d_open_t         smopen;
   47 static d_close_t        smclose;
   48 static d_ioctl_t        smioctl;
   49 
   50 static struct cdevsw sm_cdevsw = {
   51         /* open */      smopen,
   52         /* close */     smclose,
   53         /* read */      ttyread,
   54         /* write */     nowrite,
   55         /* ioctl */     smioctl,
   56         /* poll */      ttypoll,
   57         /* mmap */      nommap,
   58         /* strategy */  nostrategy,
   59         /* name */      "sysmouse",
   60         /* maj */       CDEV_MAJOR,
   61         /* dump */      nodump,
   62         /* psize */     nopsize,
   63         /* flags */     D_TTY,
   64 };
   65 
   66 /* local variables */
   67 static struct tty       *sysmouse_tty;
   68 static int              mouse_level;    /* sysmouse protocol level */
   69 static mousestatus_t    mouse_status;
   70 
   71 static void             smstart(struct tty *tp);
   72 static int              smparam(struct tty *tp, struct termios *t);
   73 
   74 static int
   75 smopen(dev_t dev, int flag, int mode, struct thread *td)
   76 {
   77         struct tty *tp;
   78 
   79         DPRINTF(5, ("smopen: dev:%d,%d, vty:%d\n",
   80                 major(dev), minor(dev), SC_VTY(dev)));
   81 
   82 #if 0
   83         if (SC_VTY(dev) != SC_MOUSE)
   84                 return ENXIO;
   85 #endif
   86 
   87         tp = dev->si_tty = ttymalloc(dev->si_tty);
   88         if (!(tp->t_state & TS_ISOPEN)) {
   89                 sysmouse_tty = tp;
   90                 tp->t_oproc = smstart;
   91                 tp->t_param = smparam;
   92                 tp->t_stop = nottystop;
   93                 tp->t_dev = dev;
   94                 ttychars(tp);
   95                 tp->t_iflag = TTYDEF_IFLAG;
   96                 tp->t_oflag = TTYDEF_OFLAG;
   97                 tp->t_cflag = TTYDEF_CFLAG;
   98                 tp->t_lflag = TTYDEF_LFLAG;
   99                 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
  100                 smparam(tp, &tp->t_termios);
  101                 (*linesw[tp->t_line].l_modem)(tp, 1);
  102         } else if (tp->t_state & TS_XCLUDE && suser(td)) {
  103                 return EBUSY;
  104         }
  105 
  106         return (*linesw[tp->t_line].l_open)(dev, tp);
  107 }
  108 
  109 static int
  110 smclose(dev_t dev, int flag, int mode, struct thread *td)
  111 {
  112         struct tty *tp;
  113         int s;
  114 
  115         tp = dev->si_tty;
  116         s = spltty();
  117         mouse_level = 0;
  118         (*linesw[tp->t_line].l_close)(tp, flag);
  119         ttyclose(tp);
  120         splx(s);
  121 
  122         return 0;
  123 }
  124 
  125 static void
  126 smstart(struct tty *tp)
  127 {
  128         struct clist *rbp;
  129         u_char buf[PCBURST];
  130         int s;
  131 
  132         s = spltty();
  133         if (!(tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))) {
  134                 tp->t_state |= TS_BUSY;
  135                 rbp = &tp->t_outq;
  136                 while (rbp->c_cc)
  137                         q_to_b(rbp, buf, PCBURST);
  138                 tp->t_state &= ~TS_BUSY;
  139                 ttwwakeup(tp);
  140         }
  141         splx(s);
  142 }
  143 
  144 static int
  145 smparam(struct tty *tp, struct termios *t)
  146 {
  147         tp->t_ispeed = t->c_ispeed;
  148         tp->t_ospeed = t->c_ospeed;
  149         tp->t_cflag = t->c_cflag;
  150         return 0;
  151 }
  152 
  153 static int
  154 smioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
  155 {
  156         struct tty *tp;
  157         mousehw_t *hw;
  158         mousemode_t *mode;
  159         int error;
  160         int s;
  161 
  162         tp = dev->si_tty;
  163         switch (cmd) {
  164 
  165         case MOUSE_GETHWINFO:   /* get device information */
  166                 hw = (mousehw_t *)data;
  167                 hw->buttons = 10;               /* XXX unknown */
  168                 hw->iftype = MOUSE_IF_SYSMOUSE;
  169                 hw->type = MOUSE_MOUSE;
  170                 hw->model = MOUSE_MODEL_GENERIC;
  171                 hw->hwid = 0;
  172                 return 0;
  173 
  174         case MOUSE_GETMODE:     /* get protocol/mode */
  175                 mode = (mousemode_t *)data;
  176                 mode->level = mouse_level;
  177                 switch (mode->level) {
  178                 case 0: /* emulate MouseSystems protocol */
  179                         mode->protocol = MOUSE_PROTO_MSC;
  180                         mode->rate = -1;                /* unknown */
  181                         mode->resolution = -1;  /* unknown */
  182                         mode->accelfactor = 0;  /* disabled */
  183                         mode->packetsize = MOUSE_MSC_PACKETSIZE;
  184                         mode->syncmask[0] = MOUSE_MSC_SYNCMASK;
  185                         mode->syncmask[1] = MOUSE_MSC_SYNC;
  186                         break;
  187 
  188                 case 1: /* sysmouse protocol */
  189                         mode->protocol = MOUSE_PROTO_SYSMOUSE;
  190                         mode->rate = -1;
  191                         mode->resolution = -1;
  192                         mode->accelfactor = 0;
  193                         mode->packetsize = MOUSE_SYS_PACKETSIZE;
  194                         mode->syncmask[0] = MOUSE_SYS_SYNCMASK;
  195                         mode->syncmask[1] = MOUSE_SYS_SYNC;
  196                         break;
  197                 }
  198                 return 0;
  199 
  200         case MOUSE_SETMODE:     /* set protocol/mode */
  201                 mode = (mousemode_t *)data;
  202                 if (mode->level == -1)
  203                         ;       /* don't change the current setting */
  204                 else if ((mode->level < 0) || (mode->level > 1))
  205                         return EINVAL;
  206                 else
  207                         mouse_level = mode->level;
  208                 return 0;
  209 
  210         case MOUSE_GETLEVEL:    /* get operation level */
  211                 *(int *)data = mouse_level;
  212                 return 0;
  213 
  214         case MOUSE_SETLEVEL:    /* set operation level */
  215                 if ((*(int *)data  < 0) || (*(int *)data > 1))
  216                         return EINVAL;
  217                 mouse_level = *(int *)data;
  218                 return 0;
  219 
  220         case MOUSE_GETSTATUS:   /* get accumulated mouse events */
  221                 s = spltty();
  222                 *(mousestatus_t *)data = mouse_status;
  223                 mouse_status.flags = 0;
  224                 mouse_status.obutton = mouse_status.button;
  225                 mouse_status.dx = 0;
  226                 mouse_status.dy = 0;
  227                 mouse_status.dz = 0;
  228                 splx(s);
  229                 return 0;
  230 
  231 #if notyet
  232         case MOUSE_GETVARS:     /* get internal mouse variables */
  233         case MOUSE_SETVARS:     /* set internal mouse variables */
  234                 return ENODEV;
  235 #endif
  236 
  237         case MOUSE_READSTATE:   /* read status from the device */
  238         case MOUSE_READDATA:    /* read data from the device */
  239                 return ENODEV;
  240         }
  241 
  242         error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, td);
  243         if (error != ENOIOCTL)
  244                 return error;
  245         error = ttioctl(tp, cmd, data, flag);
  246         if (error != ENOIOCTL)
  247                 return error;
  248         return ENOTTY;
  249 }
  250 
  251 static void
  252 sm_attach_mouse(void *unused)
  253 {
  254         dev_t dev;
  255 
  256         dev = make_dev(&sm_cdevsw, SC_MOUSE, UID_ROOT, GID_WHEEL, 0600,
  257                        "sysmouse");
  258         /* sysmouse doesn't have scr_stat */
  259 }
  260 
  261 SYSINIT(sysmouse, SI_SUB_DRIVERS, SI_ORDER_MIDDLE + CDEV_MAJOR,
  262         sm_attach_mouse, NULL)
  263 
  264 int
  265 sysmouse_event(mouse_info_t *info)
  266 {
  267         /* MOUSE_BUTTON?DOWN -> MOUSE_MSC_BUTTON?UP */
  268         static int butmap[8] = {
  269             MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP,
  270             MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP,
  271             MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON3UP,
  272             MOUSE_MSC_BUTTON3UP,
  273             MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP,
  274             MOUSE_MSC_BUTTON2UP,
  275             MOUSE_MSC_BUTTON1UP,
  276             0,
  277         };
  278         u_char buf[8];
  279         int x, y, z;
  280         int i;
  281 
  282         switch (info->operation) {
  283         case MOUSE_ACTION:
  284                 mouse_status.button = info->u.data.buttons;
  285                 /* FALL THROUGH */
  286         case MOUSE_MOTION_EVENT:
  287                 x = info->u.data.x;
  288                 y = info->u.data.y;
  289                 z = info->u.data.z;
  290                 break;
  291         case MOUSE_BUTTON_EVENT:
  292                 x = y = z = 0;
  293                 if (info->u.event.value > 0)
  294                         mouse_status.button |= info->u.event.id;
  295                 else
  296                         mouse_status.button &= ~info->u.event.id;
  297                 break;
  298         default:
  299                 return 0;
  300         }
  301 
  302         mouse_status.dx += x;
  303         mouse_status.dy += y;
  304         mouse_status.dz += z;
  305         mouse_status.flags |= ((x || y || z) ? MOUSE_POSCHANGED : 0)
  306                               | (mouse_status.obutton ^ mouse_status.button);
  307         if (mouse_status.flags == 0)
  308                 return 0;
  309 
  310         if ((sysmouse_tty == NULL) || !(sysmouse_tty->t_state & TS_ISOPEN))
  311                 return mouse_status.flags;
  312 
  313         /* the first five bytes are compatible with MouseSystems' */
  314         buf[0] = MOUSE_MSC_SYNC
  315                  | butmap[mouse_status.button & MOUSE_STDBUTTONS];
  316         x = imax(imin(x, 255), -256);
  317         buf[1] = x >> 1;
  318         buf[3] = x - buf[1];
  319         y = -imax(imin(y, 255), -256);
  320         buf[2] = y >> 1;
  321         buf[4] = y - buf[2];
  322         for (i = 0; i < MOUSE_MSC_PACKETSIZE; ++i)
  323                 (*linesw[sysmouse_tty->t_line].l_rint)(buf[i], sysmouse_tty);
  324         if (mouse_level >= 1) {
  325                 /* extended part */
  326                 z = imax(imin(z, 127), -128);
  327                 buf[5] = (z >> 1) & 0x7f;
  328                 buf[6] = (z - (z >> 1)) & 0x7f;
  329                 /* buttons 4-10 */
  330                 buf[7] = (~mouse_status.button >> 3) & 0x7f;
  331                 for (i = MOUSE_MSC_PACKETSIZE; i < MOUSE_SYS_PACKETSIZE; ++i)
  332                         (*linesw[sysmouse_tty->t_line].l_rint)(buf[i],
  333                                                                sysmouse_tty);
  334         }
  335 
  336         return mouse_status.flags;
  337 }
  338 
  339 #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
