5bbae50149
On RELENG_6 (and probably RELENG_7) we see our syscons windows and pseudo-terminals have the following buffer sizes: | LINE RAW CAN OUT IHIWT ILOWT OHWT LWT COL STATE SESS PGID DISC | ttyv0 0 0 0 7680 6720 2052 256 7 OCcl 1146 1146 term | ttyp0 0 0 0 7680 6720 1296 256 0 OCc 82033 82033 term These buffer sizes make no sense, because we often have much more output than input, but I guess having higher input buffer sizes improves guarantees of the system. On MPSAFE TTY I just sent both the input and output buffer sizes to 7 KB, which is pretty big on a standard FreeBSD install with 8 syscons windows and some PTY's. Reduce the baud rate to 9600 baud, which means we now have the following buffer sizes: | LINE INQ CAN LIN LOW OUTQ USE LOW COL SESS PGID STATE | ttyv0 1920 0 0 192 1984 0 199 7 2401 2401 Oil | pts/0 1920 0 0 192 1984 0 199 5631 1305 2526 Oi This is a lot smaller, but for pseudo-devices this should be good enough. You need to do a lot of punching to fill up a 7.5 KB input buffer. If it turns out things don't work out this way, we'll just switch to 19200 baud.
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;
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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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