407 lines
9.3 KiB
C
407 lines
9.3 KiB
C
/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/sysv/xqueue.c,v 3.8.2.1 1997/07/13 14:45:04 dawes Exp $ */
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/*
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* Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Thomas Roell not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Thomas Roell makes no representations
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* about the suitability of this software for any purpose. It is provided
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* "as is" without express or implied warranty.
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*
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* THOMAS ROELL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THOMAS ROELL BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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/* $Xorg: xqueue.c,v 1.3 2000/08/17 19:51:33 cpqbld Exp $ */
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#define NEED_EVENTS
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#include "X.h"
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#include "Xproto.h"
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#include "inputstr.h"
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#include "scrnintstr.h"
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#include "compiler.h"
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#include "xf86.h"
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#include "xf86Procs.h"
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#include "xf86_OSlib.h"
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#ifdef XQUEUE
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static xqEventQueue *XqueQaddr;
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static int xqueFd = -1;
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#ifndef XQUEUE_ASYNC
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static int xquePipe[2];
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#endif
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#ifdef XKB
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#include <X11/extensions/XKB.h>
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#include <X11/extensions/XKBstr.h>
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#include <X11/extensions/XKBsrv.h>
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extern Bool noXkbExtension;
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#endif
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#ifdef XINPUT
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#include "xf86_Config.h"
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#include "xf86Xinput.h"
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#endif
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extern int miPointerGetMotionEvents(DeviceIntPtr pPtr, xTimecoord *coords,
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unsigned long start, unsigned long stop,
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ScreenPtr pScreen);
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#ifndef XQUEUE_ASYNC
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/*
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* xf86XqueSignal --
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* Trap the signal from xqueue and let it be known that events are
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* ready for collection
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*/
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static void
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xf86XqueSignal(int signum)
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{
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xf86Info.mouseDev->xquePending = 1;
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/*
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* This is a hack, but it is the only reliable way I can find of letting
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* the main select() loop know that there is more input waiting. Receiving
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* a signal will interrupt select(), but there is no way I can find of
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* dealing with events that come in between the end of processing the
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* last set and when select() gets called.
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*
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* Suggestions for better ways of dealing with this without going back to
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* asynchronous event processing are welcome.
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*/
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write(xquePipe[1], "X", 1);
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signal(SIGUSR2, xf86XqueSignal);
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}
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#endif
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/*
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* xf86XqueRequest --
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* Notice an i/o request from the xqueue.
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*/
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void
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xf86XqueRequest()
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{
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xqEvent *XqueEvents = XqueQaddr->xq_events;
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int XqueHead = XqueQaddr->xq_head;
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char buf[100];
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while (XqueHead != XqueQaddr->xq_tail)
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{
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switch(XqueEvents[XqueHead].xq_type) {
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case XQ_BUTTON:
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xf86PostMseEvent(xf86Info.pMouse,
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~(XqueEvents[XqueHead].xq_code) & 0x07, 0, 0);
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break;
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case XQ_MOTION:
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xf86PostMseEvent(xf86Info.pMouse,
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~(XqueEvents[XqueHead].xq_code) & 0x07,
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XqueEvents[XqueHead].xq_x,
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XqueEvents[XqueHead].xq_y);
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break;
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case XQ_KEY:
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xf86PostKbdEvent(XqueEvents[XqueHead].xq_code);
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break;
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default:
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ErrorF("Unknown Xque Event: 0x%02x\n", XqueEvents[XqueHead].xq_type);
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}
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if ((++XqueHead) == XqueQaddr->xq_size) XqueHead = 0;
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}
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/* reenable the signal-processing */
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xf86Info.inputPending = TRUE;
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#ifdef XQUEUE_ASYNC
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signal(SIGUSR2, (void (*)()) xf86XqueRequest);
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#else
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#if 0
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signal(SIGUSR2, (void (*)()) xf86XqueSignal);
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#endif
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#endif
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#ifndef XQUEUE_ASYNC
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{
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int rval;
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while ((rval = read(xquePipe[0], buf, sizeof(buf))) > 0)
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#ifdef DEBUG
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ErrorF("Read %d bytes from xquePipe[0]\n", rval);
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#else
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;
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#endif
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}
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#endif
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XqueQaddr->xq_head = XqueQaddr->xq_tail;
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xf86Info.mouseDev->xquePending = 0;
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XqueQaddr->xq_sigenable = 1; /* UNLOCK */
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}
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/*
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* xf86XqueEnable --
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* Enable the handling of the Xque
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*/
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static int
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xf86XqueEnable()
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{
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static struct kd_quemode xqueMode;
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static Bool was_here = FALSE;
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if (!was_here) {
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if ((xqueFd = open("/dev/mouse", O_RDONLY|O_NDELAY)) < 0)
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{
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if (xf86AllowMouseOpenFail) {
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ErrorF("Cannot open /dev/mouse (%s) - Continuing...\n",
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strerror(errno));
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return (Success);
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} else {
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Error ("Cannot open /dev/mouse");
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return (!Success);
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}
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}
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#ifndef XQUEUE_ASYNC
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pipe(xquePipe);
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fcntl(xquePipe[0],F_SETFL,fcntl(xquePipe[0],F_GETFL,0)|O_NDELAY);
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fcntl(xquePipe[1],F_SETFL,fcntl(xquePipe[1],F_GETFL,0)|O_NDELAY);
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#endif
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was_here = TRUE;
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}
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if (xf86Info.mouseDev->xqueSema++ == 0)
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{
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#ifdef XQUEUE_ASYNC
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(void) signal(SIGUSR2, (void (*)()) xf86XqueRequest);
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#else
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(void) signal(SIGUSR2, (void (*)()) xf86XqueSignal);
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#endif
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xqueMode.qsize = 64; /* max events */
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xqueMode.signo = SIGUSR2;
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ioctl(xf86Info.consoleFd, KDQUEMODE, NULL);
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if (ioctl(xf86Info.consoleFd, KDQUEMODE, &xqueMode) < 0) {
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Error ("Cannot set KDQUEMODE");
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/* CONSTCOND */
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return (!Success);
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}
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XqueQaddr = (xqEventQueue *)xqueMode.qaddr;
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XqueQaddr->xq_sigenable = 1; /* UNLOCK */
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}
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return(Success);
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}
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/*
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* xf86XqueDisable --
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* disable the handling of the Xque
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*/
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static int
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xf86XqueDisable()
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{
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if (xf86Info.mouseDev->xqueSema-- == 1)
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{
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XqueQaddr->xq_sigenable = 0; /* LOCK */
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if (ioctl(xf86Info.consoleFd, KDQUEMODE, NULL) < 0) {
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Error ("Cannot unset KDQUEMODE");
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/* CONSTCOND */
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return (!Success);
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}
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}
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return(Success);
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}
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/*
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* xf86XqueMseProc --
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* Handle the initialization, etc. of a mouse
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*/
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int
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xf86XqueMseProc(pPointer, what)
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DeviceIntPtr pPointer;
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int what;
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{
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MouseDevPtr mouse = MOUSE_DEV(pPointer);
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unchar map[4];
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int ret;
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mouse->device = pPointer;
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switch (what)
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{
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case DEVICE_INIT:
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pPointer->public.on = FALSE;
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map[1] = 1;
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map[2] = 2;
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map[3] = 3;
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InitPointerDeviceStruct((DevicePtr)pPointer,
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map,
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3,
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miPointerGetMotionEvents,
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(PtrCtrlProcPtr)xf86MseCtrl,
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miPointerGetMotionBufferSize());
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break;
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case DEVICE_ON:
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mouse->lastButtons = 0;
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mouse->emulateState = 0;
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pPointer->public.on = TRUE;
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ret = xf86XqueEnable();
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#ifndef XQUEUE_ASYNC
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if (xquePipe[0] != -1)
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AddEnabledDevice(xquePipe[0]);
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#endif
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return(ret);
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case DEVICE_CLOSE:
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case DEVICE_OFF:
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pPointer->public.on = FALSE;
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ret = xf86XqueDisable();
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#ifndef XQUEUE_ASYNC
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if (xquePipe[0] != -1)
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RemoveEnabledDevice(xquePipe[0]);
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#endif
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return(ret);
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}
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return Success;
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}
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/*
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* xf86XqueKbdProc --
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* Handle the initialization, etc. of a keyboard.
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*/
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int
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xf86XqueKbdProc (pKeyboard, what)
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DeviceIntPtr pKeyboard; /* Keyboard to manipulate */
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int what; /* What to do to it */
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{
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KeySymsRec keySyms;
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CARD8 modMap[MAP_LENGTH];
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switch (what) {
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case DEVICE_INIT:
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xf86KbdGetMapping(&keySyms, modMap);
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/*
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* Get also the initial led settings
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*/
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ioctl(xf86Info.consoleFd, KDGETLED, &xf86Info.leds);
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/*
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* Perform final initialization of the system private keyboard
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* structure and fill in various slots in the device record
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* itself which couldn't be filled in before.
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*/
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pKeyboard->public.on = FALSE;
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#ifdef XKB
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if (noXkbExtension) {
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#endif
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InitKeyboardDeviceStruct((DevicePtr)xf86Info.pKeyboard,
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&keySyms,
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modMap,
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xf86KbdBell,
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(KbdCtrlProcPtr)xf86KbdCtrl);
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#ifdef XKB
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} else {
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XkbComponentNamesRec names;
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if (XkbInitialMap) {
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if ((xf86Info.xkbkeymap = strchr(XkbInitialMap, '/')) != NULL)
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xf86Info.xkbkeymap++;
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else
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xf86Info.xkbkeymap = XkbInitialMap;
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}
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if (xf86Info.xkbkeymap) {
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names.keymap = xf86Info.xkbkeymap;
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names.keycodes = NULL;
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names.types = NULL;
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names.compat = NULL;
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names.symbols = NULL;
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names.geometry = NULL;
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} else {
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names.keymap = NULL;
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names.keycodes = xf86Info.xkbkeycodes;
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names.types = xf86Info.xkbtypes;
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names.compat = xf86Info.xkbcompat;
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names.symbols = xf86Info.xkbsymbols;
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names.geometry = xf86Info.xkbgeometry;
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}
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if ((xf86Info.xkbkeymap || xf86Info.xkbcomponents_specified)
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&& (xf86Info.xkbmodel == NULL || xf86Info.xkblayout == NULL)) {
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xf86Info.xkbrules = NULL;
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}
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XkbSetRulesDflts(xf86Info.xkbrules, xf86Info.xkbmodel,
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xf86Info.xkblayout, xf86Info.xkbvariant,
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xf86Info.xkboptions);
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XkbInitKeyboardDeviceStruct(pKeyboard,
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&names,
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&keySyms,
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modMap,
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xf86KbdBell,
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(KbdCtrlProcPtr)xf86KbdCtrl);
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}
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#endif
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xf86InitKBD(TRUE);
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break;
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case DEVICE_ON:
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pKeyboard->public.on = TRUE;
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xf86InitKBD(FALSE);
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return(xf86XqueEnable());
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case DEVICE_CLOSE:
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case DEVICE_OFF:
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pKeyboard->public.on = FALSE;
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return(xf86XqueDisable());
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}
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return (Success);
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}
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/*
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* xf86XqueEvents --
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* Get some events from our queue. Nothing to do here ...
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*/
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void
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xf86XqueEvents()
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{
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}
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#endif /* XQUEUE */
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