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 1.12 2006/09/10 03:26:35 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 dev_ops sm_ops = {
  55         { "sysmouse", CDEV_MAJOR, D_TTY },
  56         .d_open =       smopen,
  57         .d_close =      smclose,
  58         .d_read =       ttyread,
  59         .d_ioctl =      smioctl,
  60         .d_poll =       ttypoll,
  61 };
  62
  63 /* local variables */
  64 static struct tty       *sysmouse_tty;
  65 static int              mouse_level;    /* sysmouse protocol level */
  66 static mousestatus_t    mouse_status;
  67
  68 static void             smstart(struct tty *tp);
  69 static int              smparam(struct tty *tp, struct termios *t);
  70
  71 static int
  72 smopen(struct dev_open_args *ap)
  73 {
  74         cdev_t dev = ap->a_head.a_dev;
  75         struct tty *tp;
  76
  77         DPRINTF(5, ("smopen: dev:%d,%d, vty:%d\n",
  78                 major(dev), minor(dev), SC_VTY(dev)));
  79
  80 #if 0
  81         if (SC_VTY(dev) != SC_MOUSE)
  82                 return ENXIO;
  83 #endif
  84
  85         tp = dev->si_tty = ttymalloc(dev->si_tty);
  86         if (!(tp->t_state & TS_ISOPEN)) {
  87                 sysmouse_tty = tp;
  88                 tp->t_oproc = smstart;
  89                 tp->t_param = smparam;
  90                 tp->t_stop = nottystop;
  91                 tp->t_dev = dev;
  92                 ttychars(tp);
  93                 tp->t_iflag = 0;
  94                 tp->t_oflag = 0;
  95                 tp->t_lflag = 0;
  96                 tp->t_cflag = TTYDEF_CFLAG;
  97                 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
  98                 smparam(tp, &tp->t_termios);
  99                 (*linesw[tp->t_line].l_modem)(tp, 1);
 100         } else if (tp->t_state & TS_XCLUDE && suser_cred(ap->a_cred, 0)) {
 101                 return EBUSY;
 102         }
 103
 104         return (*linesw[tp->t_line].l_open)(dev, tp);
 105 }
 106
 107 static int
 108 smclose(struct dev_close_args *ap)
 109 {
 110         cdev_t dev = ap->a_head.a_dev;
 111         struct tty *tp;
 112
 113         tp = dev->si_tty;
 114         crit_enter();
 115         mouse_level = 0;
 116         (*linesw[tp->t_line].l_close)(tp, ap->a_fflag);
 117         ttyclose(tp);
 118         crit_exit();
 119
 120         return 0;
 121 }
 122
 123 static void
 124 smstart(struct tty *tp)
 125 {
 126         struct clist *rbp;
 127         u_char buf[PCBURST];
 128
 129         crit_enter();
 130         if (!(tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))) {
 131                 tp->t_state |= TS_BUSY;
 132                 rbp = &tp->t_outq;
 133                 while (rbp->c_cc)
 134                         q_to_b(rbp, buf, PCBURST);
 135                 tp->t_state &= ~TS_BUSY;
 136                 ttwwakeup(tp);
 137         }
 138         crit_exit();
 139 }
 140
 141 static int
 142 smparam(struct tty *tp, struct termios *t)
 143 {
 144         tp->t_ispeed = t->c_ispeed;
 145         tp->t_ospeed = t->c_ospeed;
 146         tp->t_cflag = t->c_cflag;
 147         return 0;
 148 }
 149
 150 static int
 151 smioctl(struct dev_ioctl_args *ap)
 152 {
 153         cdev_t dev = ap->a_head.a_dev;
 154         struct tty *tp;
 155         mousehw_t *hw;
 156         mousemode_t *mode;
 157         int error;
 158
 159         tp = dev->si_tty;
 160
 161         switch (ap->a_cmd) {
 162         case MOUSE_GETHWINFO:   /* get device information */
 163                 hw = (mousehw_t *)ap->a_data;
 164                 hw->buttons = 10;               /* XXX unknown */
 165                 hw->iftype = MOUSE_IF_SYSMOUSE;
 166                 hw->type = MOUSE_MOUSE;
 167                 hw->model = MOUSE_MODEL_GENERIC;
 168                 hw->hwid = 0;
 169                 return 0;
 170
 171         case MOUSE_GETMODE:     /* get protocol/mode */
 172                 mode = (mousemode_t *)ap->a_data;
 173                 mode->level = mouse_level;
 174                 switch (mode->level) {
 175                 case 0: /* emulate MouseSystems protocol */
 176                         mode->protocol = MOUSE_PROTO_MSC;
 177                         mode->rate = -1;                /* unknown */
 178                         mode->resolution = -1;  /* unknown */
 179                         mode->accelfactor = 0;  /* disabled */
 180                         mode->packetsize = MOUSE_MSC_PACKETSIZE;
 181                         mode->syncmask[0] = MOUSE_MSC_SYNCMASK;
 182                         mode->syncmask[1] = MOUSE_MSC_SYNC;
 183                         break;
 184
 185                 case 1: /* sysmouse protocol */
 186                         mode->protocol = MOUSE_PROTO_SYSMOUSE;
 187                         mode->rate = -1;
 188                         mode->resolution = -1;
 189                         mode->accelfactor = 0;
 190                         mode->packetsize = MOUSE_SYS_PACKETSIZE;
 191                         mode->syncmask[0] = MOUSE_SYS_SYNCMASK;
 192                         mode->syncmask[1] = MOUSE_SYS_SYNC;
 193                         break;
 194                 }
 195                 return 0;
 196
 197         case MOUSE_SETMODE:     /* set protocol/mode */
 198                 mode = (mousemode_t *)ap->a_data;
 199                 if (mode->level == -1)
 200                         ;       /* don't change the current setting */
 201                 else if ((mode->level < 0) || (mode->level > 1))
 202                         return EINVAL;
 203                 else
 204                         mouse_level = mode->level;
 205                 return 0;
 206
 207         case MOUSE_GETLEVEL:    /* get operation level */
 208                 *(int *)ap->a_data = mouse_level;
 209                 return 0;
 210
 211         case MOUSE_SETLEVEL:    /* set operation level */
 212                 if ((*(int *)ap->a_data  < 0) || (*(int *)ap->a_data > 1))
 213                         return EINVAL;
 214                 mouse_level = *(int *)ap->a_data;
 215                 return 0;
 216
 217         case MOUSE_GETSTATUS:   /* get accumulated mouse events */
 218                 crit_enter();
 219                 *(mousestatus_t *)ap->a_data = mouse_status;
 220                 mouse_status.flags = 0;
 221                 mouse_status.obutton = mouse_status.button;
 222                 mouse_status.dx = 0;
 223                 mouse_status.dy = 0;
 224                 mouse_status.dz = 0;
 225                 crit_exit();
 226                 return 0;
 227
 228 #if notyet
 229         case MOUSE_GETVARS:     /* get internal mouse variables */
 230         case MOUSE_SETVARS:     /* set internal mouse variables */
 231                 return ENODEV;
 232 #endif
 233
 234         case MOUSE_READSTATE:   /* read status from the device */
 235         case MOUSE_READDATA:    /* read data from the device */
 236                 return ENODEV;
 237         }
 238
 239         error = (*linesw[tp->t_line].l_ioctl)(tp, ap->a_cmd, ap->a_data, ap->a_fflag, ap->a_cred);
 240         if (error != ENOIOCTL)
 241                 return error;
 242         error = ttioctl(tp, ap->a_cmd, ap->a_data, ap->a_fflag);
 243         if (error != ENOIOCTL)
 244                 return error;
 245         return ENOTTY;
 246 }
 247
 248 static void
 249 sm_attach_mouse(void *unused)
 250 {
 251         cdev_t dev;
 252
 253         dev_ops_add(&sm_ops, -1, SC_MOUSE);
 254         dev = make_dev(&sm_ops, SC_MOUSE, UID_ROOT, GID_WHEEL, 0600,
 255                        "sysmouse");
 256         /* sysmouse doesn't have scr_stat */
 257 }
 258
 259 SYSINIT(sysmouse, SI_SUB_DRIVERS, SI_ORDER_MIDDLE + CDEV_MAJOR,
 260         sm_attach_mouse, NULL)
 261
 262 int
 263 sysmouse_event(mouse_info_t *info)
 264 {
 265         /* MOUSE_BUTTON?DOWN -> MOUSE_MSC_BUTTON?UP */
 266         static int butmap[8] = {
 267             MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP,
 268             MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP,
 269             MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON3UP,
 270             MOUSE_MSC_BUTTON3UP,
 271             MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP,
 272             MOUSE_MSC_BUTTON2UP,
 273             MOUSE_MSC_BUTTON1UP,
 274             0,
 275         };
 276         u_char buf[8];
 277         int x, y, z;
 278         int i;
 279
 280         switch (info->operation) {
 281         case MOUSE_ACTION:
 282                 mouse_status.button = info->u.data.buttons;
 283                 /* FALL THROUGH */
 284         case MOUSE_MOTION_EVENT:
 285                 x = info->u.data.x;
 286                 y = info->u.data.y;
 287                 z = info->u.data.z;
 288                 break;
 289         case MOUSE_BUTTON_EVENT:
 290                 x = y = z = 0;
 291                 if (info->u.event.value > 0)
 292                         mouse_status.button |= info->u.event.id;
 293                 else
 294                         mouse_status.button &= ~info->u.event.id;
 295                 break;
 296         default:
 297                 return 0;
 298         }
 299
 300         mouse_status.dx += x;
 301         mouse_status.dy += y;
 302         mouse_status.dz += z;
 303         mouse_status.flags |= ((x || y || z) ? MOUSE_POSCHANGED : 0)
 304                               | (mouse_status.obutton ^ mouse_status.button);
 305         if (mouse_status.flags == 0)
 306                 return 0;
 307
 308         if ((sysmouse_tty == NULL) || !(sysmouse_tty->t_state & TS_ISOPEN))
 309                 return mouse_status.flags;
 310
 311         /* the first five bytes are compatible with MouseSystems' */
 312         buf[0] = MOUSE_MSC_SYNC
 313                  | butmap[mouse_status.button & MOUSE_STDBUTTONS];
 314         x = imax(imin(x, 255), -256);
 315         buf[1] = x >> 1;
 316         buf[3] = x - buf[1];
 317         y = -imax(imin(y, 255), -256);
 318         buf[2] = y >> 1;
 319         buf[4] = y - buf[2];
 320         for (i = 0; i < MOUSE_MSC_PACKETSIZE; ++i)
 321                 (*linesw[sysmouse_tty->t_line].l_rint)(buf[i], sysmouse_tty);
 322         if (mouse_level >= 1) {
 323                 /* extended part */
 324                 z = imax(imin(z, 127), -128);
 325                 buf[5] = (z >> 1) & 0x7f;
 326                 buf[6] = (z - (z >> 1)) & 0x7f;
 327                 /* buttons 4-10 */
 328                 buf[7] = (~mouse_status.button >> 3) & 0x7f;
 329                 for (i = MOUSE_MSC_PACKETSIZE; i < MOUSE_SYS_PACKETSIZE; ++i)
 330                         (*linesw[sysmouse_tty->t_line].l_rint)(buf[i],
 331                                                                sysmouse_tty);
 332         }
 333
 334         return mouse_status.flags;
 335 }
 336
 337 #endif /* !SC_NO_SYSMOUSE */