sys/dev/syscons/sysmouse.c

   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  * $FreeBSD$
  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 */