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