f0aab2e149
/dev/random now has new-and-improved entropy!
346 lines
8.8 KiB
C
346 lines
8.8 KiB
C
/*-
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* Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer as
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* the first lines of this file unmodified.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include "opt_syscons.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/proc.h>
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#include <sys/random.h>
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#include <sys/tty.h>
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#include <sys/kernel.h>
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#include <machine/console.h>
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#include <machine/mouse.h>
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#include <dev/syscons/syscons.h>
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#ifndef SC_NO_SYSMOUSE
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#define CDEV_MAJOR 12 /* major number, shared with syscons */
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#define SC_MOUSE 128 /* minor number */
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static d_open_t smopen;
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static d_close_t smclose;
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static d_ioctl_t smioctl;
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static struct cdevsw sm_cdevsw = {
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/* open */ smopen,
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/* close */ smclose,
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/* read */ ttyread,
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/* write */ nowrite,
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/* ioctl */ smioctl,
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/* poll */ ttypoll,
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/* mmap */ nommap,
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/* strategy */ nostrategy,
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/* name */ "sysmouse",
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/* maj */ CDEV_MAJOR,
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/* dump */ nodump,
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/* psize */ nopsize,
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/* flags */ D_TTY,
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/* bmaj */ -1
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};
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/* local variables */
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static struct tty *sysmouse_tty;
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static int mouse_level; /* sysmouse protocol level */
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static mousestatus_t mouse_status;
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static void smstart(struct tty *tp);
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static int smparam(struct tty *tp, struct termios *t);
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static int
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smopen(dev_t dev, int flag, int mode, struct proc *p)
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{
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struct tty *tp;
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DPRINTF(5, ("smopen: dev:%d,%d, vty:%d\n",
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major(dev), minor(dev), SC_VTY(dev)));
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#if 0
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if (SC_VTY(dev) != SC_MOUSE)
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return ENXIO;
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#endif
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tp = dev->si_tty = ttymalloc(dev->si_tty);
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if (!(tp->t_state & TS_ISOPEN)) {
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tp->t_oproc = smstart;
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tp->t_param = smparam;
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tp->t_stop = nottystop;
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tp->t_dev = dev;
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ttychars(tp);
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tp->t_iflag = TTYDEF_IFLAG;
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tp->t_oflag = TTYDEF_OFLAG;
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tp->t_cflag = TTYDEF_CFLAG;
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tp->t_lflag = TTYDEF_LFLAG;
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tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
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smparam(tp, &tp->t_termios);
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(*linesw[tp->t_line].l_modem)(tp, 1);
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} else if (tp->t_state & TS_XCLUDE && suser(p)) {
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return EBUSY;
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}
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return (*linesw[tp->t_line].l_open)(dev, tp);
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}
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static int
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smclose(dev_t dev, int flag, int mode, struct proc *p)
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{
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struct tty *tp;
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int s;
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tp = dev->si_tty;
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s = spltty();
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mouse_level = 0;
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(*linesw[tp->t_line].l_close)(tp, flag);
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ttyclose(tp);
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splx(s);
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return 0;
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}
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static void
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smstart(struct tty *tp)
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{
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struct clist *rbp;
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u_char buf[PCBURST];
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int s;
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s = spltty();
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if (!(tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))) {
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tp->t_state |= TS_BUSY;
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rbp = &tp->t_outq;
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while (rbp->c_cc)
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q_to_b(rbp, buf, PCBURST);
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tp->t_state &= ~TS_BUSY;
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ttwwakeup(tp);
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}
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splx(s);
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}
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static int
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smparam(struct tty *tp, struct termios *t)
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{
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tp->t_ispeed = t->c_ispeed;
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tp->t_ospeed = t->c_ospeed;
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tp->t_cflag = t->c_cflag;
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return 0;
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}
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static int
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smioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
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{
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struct tty *tp;
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mousehw_t *hw;
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mousemode_t *mode;
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int error;
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int s;
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tp = dev->si_tty;
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switch (cmd) {
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case MOUSE_GETHWINFO: /* get device information */
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hw = (mousehw_t *)data;
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hw->buttons = 10; /* XXX unknown */
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hw->iftype = MOUSE_IF_SYSMOUSE;
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hw->type = MOUSE_MOUSE;
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hw->model = MOUSE_MODEL_GENERIC;
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hw->hwid = 0;
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return 0;
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case MOUSE_GETMODE: /* get protocol/mode */
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mode = (mousemode_t *)data;
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mode->level = mouse_level;
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switch (mode->level) {
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case 0: /* emulate MouseSystems protocol */
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mode->protocol = MOUSE_PROTO_MSC;
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mode->rate = -1; /* unknown */
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mode->resolution = -1; /* unknown */
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mode->accelfactor = 0; /* disabled */
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mode->packetsize = MOUSE_MSC_PACKETSIZE;
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mode->syncmask[0] = MOUSE_MSC_SYNCMASK;
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mode->syncmask[1] = MOUSE_MSC_SYNC;
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break;
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case 1: /* sysmouse protocol */
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mode->protocol = MOUSE_PROTO_SYSMOUSE;
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mode->rate = -1;
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mode->resolution = -1;
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mode->accelfactor = 0;
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mode->packetsize = MOUSE_SYS_PACKETSIZE;
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mode->syncmask[0] = MOUSE_SYS_SYNCMASK;
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mode->syncmask[1] = MOUSE_SYS_SYNC;
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break;
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}
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return 0;
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case MOUSE_SETMODE: /* set protocol/mode */
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mode = (mousemode_t *)data;
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if ((mode->level < 0) || (mode->level > 1))
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return EINVAL;
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mouse_level = mode->level;
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return 0;
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case MOUSE_GETLEVEL: /* get operation level */
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*(int *)data = mouse_level;
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return 0;
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case MOUSE_SETLEVEL: /* set operation level */
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if ((*(int *)data < 0) || (*(int *)data > 1))
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return EINVAL;
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mouse_level = *(int *)data;
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return 0;
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case MOUSE_GETSTATUS: /* get accumulated mouse events */
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s = spltty();
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*(mousestatus_t *)data = mouse_status;
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mouse_status.flags = 0;
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mouse_status.obutton = mouse_status.button;
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mouse_status.dx = 0;
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mouse_status.dy = 0;
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mouse_status.dz = 0;
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splx(s);
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return 0;
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#if notyet
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case MOUSE_GETVARS: /* get internal mouse variables */
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case MOUSE_SETVARS: /* set internal mouse variables */
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return ENODEV;
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#endif
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case MOUSE_READSTATE: /* read status from the device */
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case MOUSE_READDATA: /* read data from the device */
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return ENODEV;
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}
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error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
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if (error != ENOIOCTL)
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return error;
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error = ttioctl(tp, cmd, data, flag);
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if (error != ENOIOCTL)
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return error;
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return ENOTTY;
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}
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static void
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sm_attach_mouse(void *unused)
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{
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dev_t dev;
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dev = make_dev(&sm_cdevsw, SC_MOUSE, UID_ROOT, GID_WHEEL, 0600,
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"sysmouse");
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dev->si_tty = sysmouse_tty = ttymalloc(sysmouse_tty);
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/* sysmouse doesn't have scr_stat */
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}
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SYSINIT(sysmouse, SI_SUB_DRIVERS, SI_ORDER_MIDDLE + CDEV_MAJOR,
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sm_attach_mouse, NULL)
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int
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sysmouse_event(mouse_info_t *info)
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{
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/* MOUSE_BUTTON?DOWN -> MOUSE_MSC_BUTTON?UP */
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static int butmap[8] = {
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MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP,
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MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP,
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MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON3UP,
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MOUSE_MSC_BUTTON3UP,
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MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP,
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MOUSE_MSC_BUTTON2UP,
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MOUSE_MSC_BUTTON1UP,
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0,
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};
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u_char buf[8];
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int x, y, z;
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int i;
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switch (info->operation) {
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case MOUSE_ACTION:
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mouse_status.button = info->u.data.buttons;
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/* FALL THROUGH */
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case MOUSE_MOTION_EVENT:
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x = info->u.data.x;
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y = info->u.data.y;
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z = info->u.data.z;
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break;
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case MOUSE_BUTTON_EVENT:
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x = y = z = 0;
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if (info->u.event.value > 0)
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mouse_status.button |= info->u.event.id;
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else
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mouse_status.button &= ~info->u.event.id;
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break;
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default:
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return 0;
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}
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mouse_status.dx += x;
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mouse_status.dy += y;
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mouse_status.dz += z;
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mouse_status.flags |= ((x || y || z) ? MOUSE_POSCHANGED : 0)
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| (mouse_status.obutton ^ mouse_status.button);
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if (mouse_status.flags == 0)
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return 0;
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if ((sysmouse_tty == NULL) || !(sysmouse_tty->t_state & TS_ISOPEN))
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return mouse_status.flags;
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/* the first five bytes are compatible with MouseSystems' */
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buf[0] = MOUSE_MSC_SYNC
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| butmap[mouse_status.button & MOUSE_STDBUTTONS];
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x = imax(imin(x, 255), -256);
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buf[1] = x >> 1;
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buf[3] = x - buf[1];
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y = -imax(imin(y, 255), -256);
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buf[2] = y >> 1;
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buf[4] = y - buf[2];
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for (i = 0; i < MOUSE_MSC_PACKETSIZE; ++i)
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(*linesw[sysmouse_tty->t_line].l_rint)(buf[i], sysmouse_tty);
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if (mouse_level >= 1) {
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/* extended part */
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z = imax(imin(z, 127), -128);
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buf[5] = (z >> 1) & 0x7f;
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buf[6] = (z - (z >> 1)) & 0x7f;
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/* buttons 4-10 */
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buf[7] = (~mouse_status.button >> 3) & 0x7f;
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for (i = MOUSE_MSC_PACKETSIZE; i < MOUSE_SYS_PACKETSIZE; ++i)
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(*linesw[sysmouse_tty->t_line].l_rint)(buf[i],
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sysmouse_tty);
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}
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/* do the /dev/random device a favour */
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/* The nasty-looking cast is to force treatment of 8 u_chars */
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/* in buf as a u_int64_t */
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random_harvest(*((u_int64_t *)buf), 2, 0, RANDOM_MOUSE);
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return mouse_status.flags;
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}
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#endif /* !SC_NO_SYSMOUSE */
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