dd63e2a189
When I changed syscons(4) to work with the MPSAFE TTY code, I just locked all device nodes down using the compatibility feature that allows you to override the TTY's lock (Giant in this case). Upon closer inspection, it seems sysmouse(4) only has two internal variables that need locking: mouse_level and mouse_status. I haven't done any performance benchmarks on this, though I think it won't have any dramatic improvements on the system. It is good to get rid of Giant here, because the third argument of tty_alloc() has only been added to ease migration to MPSAFE TTY. It should not be used when not needed. While there, remove SC_MOUSE, which is a leftover from the MPSAFE TTY import.
250 lines
6.7 KiB
C
250 lines
6.7 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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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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/priv.h>
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#include <sys/serial.h>
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#include <sys/tty.h>
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#include <sys/kernel.h>
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#include <sys/consio.h>
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#include <sys/mouse.h>
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#include <dev/syscons/syscons.h>
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#ifndef SC_NO_SYSMOUSE
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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
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smdev_close(struct tty *tp)
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{
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mouse_level = 0;
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}
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static int
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smdev_ioctl(struct tty *tp, u_long cmd, caddr_t data, struct thread *td)
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{
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mousehw_t *hw;
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mousemode_t *mode;
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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 == -1)
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; /* don't change the current setting */
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else if ((mode->level < 0) || (mode->level > 1))
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return EINVAL;
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else
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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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*(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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return 0;
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#ifdef 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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return (ENOIOCTL);
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}
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static int
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smdev_param(struct tty *tp, struct termios *t)
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{
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/*
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* Set the output baud rate to zero. The mouse device supports
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* no output, so we don't want to waste buffers.
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*/
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t->c_ispeed = TTYDEF_SPEED_PSEUDO;
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t->c_ospeed = B0;
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return (0);
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}
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static struct ttydevsw smdev_ttydevsw = {
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.tsw_flags = TF_NOPREFIX,
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.tsw_close = smdev_close,
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.tsw_ioctl = smdev_ioctl,
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.tsw_param = smdev_param,
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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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sysmouse_tty = tty_alloc(&smdev_ttydevsw, NULL, NULL);
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tty_makedev(sysmouse_tty, NULL, "sysmouse");
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}
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SYSINIT(sysmouse, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, 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, flags = 0;
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tty_lock(sysmouse_tty);
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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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goto done;
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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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flags = mouse_status.flags;
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if (flags == 0 || !tty_opened(sysmouse_tty))
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goto done;
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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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ttydisc_rint(sysmouse_tty, buf[i], 0);
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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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ttydisc_rint(sysmouse_tty, buf[i], 0);
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}
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ttydisc_rint_done(sysmouse_tty);
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done: tty_unlock(sysmouse_tty);
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return (flags);
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}
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#endif /* !SC_NO_SYSMOUSE */
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