sys/dev/misc/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: src/sys/dev/syscons/sysmouse.c,v 1.2.2.2 2001/07/16 05:21:24 yokota Exp $
  27  * $DragonFly: src/sys/dev/misc/syscons/sysmouse.c,v 1.9 2005/06/11 00:26:45 dillon Exp $
  28  */
  29
  30 #include "opt_syscons.h"
  31
  32 #include <sys/param.h>
  33 #include <sys/systm.h>
  34 #include <sys/conf.h>
  35 #include <sys/proc.h>
  36 #include <sys/tty.h>
  37 #include <sys/kernel.h>
  38 #include <sys/thread2.h>
  39
  40 #include <machine/console.h>
  41 #include <machine/mouse.h>
  42
  43 #include "syscons.h"
  44
  45 #ifndef SC_NO_SYSMOUSE
  46
  47 #define CDEV_MAJOR      12              /* major number, shared with syscons */
  48 #define SC_MOUSE        128             /* minor number */
  49
  50 static d_open_t         smopen;
  51 static d_close_t        smclose;
  52 static d_ioctl_t        smioctl;
  53
  54 static struct cdevsw sm_cdevsw = {
  55         /* name */      "sysmouse",
  56         /* maj */       CDEV_MAJOR,
  57         /* flags */     D_TTY,
  58         /* port */      NULL,
  59         /* clone */     NULL,
  60
  61         /* open */      smopen,
  62         /* close */     smclose,
  63         /* read */      ttyread,
  64         /* write */     nowrite,
  65         /* ioctl */     smioctl,
  66         /* poll */      ttypoll,
  67         /* mmap */      nommap,
  68         /* strategy */  nostrategy,
  69         /* dump */      nodump,
  70         /* psize */     nopsize
  71 };
  72
  73 /* local variables */
  74 static struct tty       *sysmouse_tty;
  75 static int              mouse_level;    /* sysmouse protocol level */
  76 static mousestatus_t    mouse_status;
  77
  78 static void             smstart(struct tty *tp);
  79 static int              smparam(struct tty *tp, struct termios *t);
  80
  81 static int
  82 smopen(dev_t dev, int flag, int mode, struct thread *td)
  83 {
  84         struct tty *tp;
  85
  86         DPRINTF(5, ("smopen: dev:%d,%d, vty:%d\n",
  87                 major(dev), minor(dev), SC_VTY(dev)));
  88
  89 #if 0
  90         if (SC_VTY(dev) != SC_MOUSE)
  91                 return ENXIO;
  92 #endif
  93
  94         tp = dev->si_tty = ttymalloc(dev->si_tty);
  95         if (!(tp->t_state & TS_ISOPEN)) {
  96                 sysmouse_tty = tp;
  97                 tp->t_oproc = smstart;
  98                 tp->t_param = smparam;
  99                 tp->t_stop = nottystop;
 100                 tp->t_dev = dev;
 101                 ttychars(tp);
 102                 tp->t_iflag = TTYDEF_IFLAG;
 103                 tp->t_oflag = TTYDEF_OFLAG;
 104                 tp->t_cflag = TTYDEF_CFLAG;
 105                 tp->t_lflag = TTYDEF_LFLAG;
 106                 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
 107                 smparam(tp, &tp->t_termios);
 108                 (*linesw[tp->t_line].l_modem)(tp, 1);
 109         } else if (tp->t_state & TS_XCLUDE && suser(td)) {
 110                 return EBUSY;
 111         }
 112
 113         return (*linesw[tp->t_line].l_open)(dev, tp);
 114 }
 115
 116 static int
 117 smclose(dev_t dev, int flag, int mode, struct thread *td)
 118 {
 119         struct tty *tp;
 120
 121         tp = dev->si_tty;
 122         crit_enter();
 123         mouse_level = 0;
 124         (*linesw[tp->t_line].l_close)(tp, flag);
 125         ttyclose(tp);
 126         crit_exit();
 127
 128         return 0;
 129 }
 130
 131 static void
 132 smstart(struct tty *tp)
 133 {
 134         struct clist *rbp;
 135         u_char buf[PCBURST];
 136
 137         crit_enter();
 138         if (!(tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))) {
 139                 tp->t_state |= TS_BUSY;
 140                 rbp = &tp->t_outq;
 141                 while (rbp->c_cc)
 142                         q_to_b(rbp, buf, PCBURST);
 143                 tp->t_state &= ~TS_BUSY;
 144                 ttwwakeup(tp);
 145         }
 146         crit_exit();
 147 }
 148
 149 static int
 150 smparam(struct tty *tp, struct termios *t)
 151 {
 152         tp->t_ispeed = t->c_ispeed;
 153         tp->t_ospeed = t->c_ospeed;
 154         tp->t_cflag = t->c_cflag;
 155         return 0;
 156 }
 157
 158 static int
 159 smioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
 160 {
 161         struct tty *tp;
 162         mousehw_t *hw;
 163         mousemode_t *mode;
 164         int error;
 165
 166         tp = dev->si_tty;
 167         switch (cmd) {
 168
 169         case MOUSE_GETHWINFO:   /* get device information */
 170                 hw = (mousehw_t *)data;
 171                 hw->buttons = 10;               /* XXX unknown */
 172                 hw->iftype = MOUSE_IF_SYSMOUSE;
 173                 hw->type = MOUSE_MOUSE;
 174                 hw->model = MOUSE_MODEL_GENERIC;
 175                 hw->hwid = 0;
 176                 return 0;
 177
 178         case MOUSE_GETMODE:     /* get protocol/mode */
 179                 mode = (mousemode_t *)data;
 180                 mode->level = mouse_level;
 181                 switch (mode->level) {
 182                 case 0: /* emulate MouseSystems protocol */
 183                         mode->protocol = MOUSE_PROTO_MSC;
 184                         mode->rate = -1;                /* unknown */
 185                         mode->resolution = -1;  /* unknown */
 186                         mode->accelfactor = 0;  /* disabled */
 187                         mode->packetsize = MOUSE_MSC_PACKETSIZE;
 188                         mode->syncmask[0] = MOUSE_MSC_SYNCMASK;
 189                         mode->syncmask[1] = MOUSE_MSC_SYNC;
 190                         break;
 191
 192                 case 1: /* sysmouse protocol */
 193                         mode->protocol = MOUSE_PROTO_SYSMOUSE;
 194                         mode->rate = -1;
 195                         mode->resolution = -1;
 196                         mode->accelfactor = 0;
 197                         mode->packetsize = MOUSE_SYS_PACKETSIZE;
 198                         mode->syncmask[0] = MOUSE_SYS_SYNCMASK;
 199                         mode->syncmask[1] = MOUSE_SYS_SYNC;
 200                         break;
 201                 }
 202                 return 0;
 203
 204         case MOUSE_SETMODE:     /* set protocol/mode */
 205                 mode = (mousemode_t *)data;
 206                 if (mode->level == -1)
 207                         ;       /* don't change the current setting */
 208                 else if ((mode->level < 0) || (mode->level > 1))
 209                         return EINVAL;
 210                 else
 211                         mouse_level = mode->level;
 212                 return 0;
 213
 214         case MOUSE_GETLEVEL:    /* get operation level */
 215                 *(int *)data = mouse_level;
 216                 return 0;
 217
 218         case MOUSE_SETLEVEL:    /* set operation level */
 219                 if ((*(int *)data  < 0) || (*(int *)data > 1))
 220                         return EINVAL;
 221                 mouse_level = *(int *)data;
 222                 return 0;
 223
 224         case MOUSE_GETSTATUS:   /* get accumulated mouse events */
 225                 crit_enter();
 226                 *(mousestatus_t *)data = mouse_status;
 227                 mouse_status.flags = 0;
 228                 mouse_status.obutton = mouse_status.button;
 229                 mouse_status.dx = 0;
 230                 mouse_status.dy = 0;
 231                 mouse_status.dz = 0;
 232                 crit_exit();
 233                 return 0;
 234
 235 #if notyet
 236         case MOUSE_GETVARS:     /* get internal mouse variables */
 237         case MOUSE_SETVARS:     /* set internal mouse variables */
 238                 return ENODEV;
 239 #endif
 240
 241         case MOUSE_READSTATE:   /* read status from the device */
 242         case MOUSE_READDATA:    /* read data from the device */
 243                 return ENODEV;
 244         }
 245
 246         error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, td);
 247         if (error != ENOIOCTL)
 248                 return error;
 249         error = ttioctl(tp, cmd, data, flag);
 250         if (error != ENOIOCTL)
 251                 return error;
 252         return ENOTTY;
 253 }
 254
 255 static void
 256 sm_attach_mouse(void *unused)
 257 {
 258         dev_t dev;
 259
 260         cdevsw_add(&sm_cdevsw, -1, SC_MOUSE);
 261         dev = make_dev(&sm_cdevsw, SC_MOUSE, UID_ROOT, GID_WHEEL, 0600,
 262                        "sysmouse");
 263         /* sysmouse doesn't have scr_stat */
 264 }
 265
 266 SYSINIT(sysmouse, SI_SUB_DRIVERS, SI_ORDER_MIDDLE + CDEV_MAJOR,
 267         sm_attach_mouse, NULL)
 268
 269 int
 270 sysmouse_event(mouse_info_t *info)
 271 {
 272         /* MOUSE_BUTTON?DOWN -> MOUSE_MSC_BUTTON?UP */
 273         static int butmap[8] = {
 274             MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP,
 275             MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP,
 276             MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON3UP,
 277             MOUSE_MSC_BUTTON3UP,
 278             MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP,
 279             MOUSE_MSC_BUTTON2UP,
 280             MOUSE_MSC_BUTTON1UP,
 281             0,
 282         };
 283         u_char buf[8];
 284         int x, y, z;
 285         int i;
 286
 287         switch (info->operation) {
 288         case MOUSE_ACTION:
 289                 mouse_status.button = info->u.data.buttons;
 290                 /* FALL THROUGH */
 291         case MOUSE_MOTION_EVENT:
 292                 x = info->u.data.x;
 293                 y = info->u.data.y;
 294                 z = info->u.data.z;
 295                 break;
 296         case MOUSE_BUTTON_EVENT:
 297                 x = y = z = 0;
 298                 if (info->u.event.value > 0)
 299                         mouse_status.button |= info->u.event.id;
 300                 else
 301                         mouse_status.button &= ~info->u.event.id;
 302                 break;
 303         default:
 304                 return 0;
 305         }
 306
 307         mouse_status.dx += x;
 308         mouse_status.dy += y;
 309         mouse_status.dz += z;
 310         mouse_status.flags |= ((x || y || z) ? MOUSE_POSCHANGED : 0)
 311                               | (mouse_status.obutton ^ mouse_status.button);
 312         if (mouse_status.flags == 0)
 313                 return 0;
 314
 315         if ((sysmouse_tty == NULL) || !(sysmouse_tty->t_state & TS_ISOPEN))
 316                 return mouse_status.flags;
 317
 318         /* the first five bytes are compatible with MouseSystems' */
 319         buf[0] = MOUSE_MSC_SYNC
 320                  | butmap[mouse_status.button & MOUSE_STDBUTTONS];
 321         x = imax(imin(x, 255), -256);
 322         buf[1] = x >> 1;
 323         buf[3] = x - buf[1];
 324         y = -imax(imin(y, 255), -256);
 325         buf[2] = y >> 1;
 326         buf[4] = y - buf[2];
 327         for (i = 0; i < MOUSE_MSC_PACKETSIZE; ++i)
 328                 (*linesw[sysmouse_tty->t_line].l_rint)(buf[i], sysmouse_tty);
 329         if (mouse_level >= 1) {
 330                 /* extended part */
 331                 z = imax(imin(z, 127), -128);
 332                 buf[5] = (z >> 1) & 0x7f;
 333                 buf[6] = (z - (z >> 1)) & 0x7f;
 334                 /* buttons 4-10 */
 335                 buf[7] = (~mouse_status.button >> 3) & 0x7f;
 336                 for (i = MOUSE_MSC_PACKETSIZE; i < MOUSE_SYS_PACKETSIZE; ++i)
 337                         (*linesw[sysmouse_tty->t_line].l_rint)(buf[i],
 338                                                                sysmouse_tty);
 339         }
 340
 341         return mouse_status.flags;
 342 }
 343
 344 #endif /* !SC_NO_SYSMOUSE */