summaryrefslogtreecommitdiff
path: root/hw/xfree86/os-support/sysv/xqueue.c
diff options
context:
space:
mode:
Diffstat (limited to 'hw/xfree86/os-support/sysv/xqueue.c')
-rw-r--r--hw/xfree86/os-support/sysv/xqueue.c406
1 files changed, 406 insertions, 0 deletions
diff --git a/hw/xfree86/os-support/sysv/xqueue.c b/hw/xfree86/os-support/sysv/xqueue.c
new file mode 100644
index 000000000..5e3c8e9fc
--- /dev/null
+++ b/hw/xfree86/os-support/sysv/xqueue.c
@@ -0,0 +1,406 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/sysv/xqueue.c,v 3.8.2.1 1997/07/13 14:45:04 dawes Exp $ */
+/*
+ * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Thomas Roell not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Thomas Roell makes no representations
+ * about the suitability of this software for any purpose. It is provided
+ * "as is" without express or implied warranty.
+ *
+ * THOMAS ROELL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THOMAS ROELL BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+/* $Xorg: xqueue.c,v 1.3 2000/08/17 19:51:33 cpqbld Exp $ */
+
+#define NEED_EVENTS
+#include "X.h"
+#include "Xproto.h"
+#include "inputstr.h"
+#include "scrnintstr.h"
+#include "compiler.h"
+
+#include "xf86.h"
+#include "xf86Procs.h"
+#include "xf86_OSlib.h"
+
+#ifdef XQUEUE
+
+static xqEventQueue *XqueQaddr;
+static int xqueFd = -1;
+#ifndef XQUEUE_ASYNC
+static int xquePipe[2];
+#endif
+
+#ifdef XKB
+#include <X11/extensions/XKB.h>
+#include <X11/extensions/XKBstr.h>
+#include <X11/extensions/XKBsrv.h>
+extern Bool noXkbExtension;
+#endif
+
+#ifdef XINPUT
+#include "xf86_Config.h"
+#include "xf86Xinput.h"
+#endif
+extern int miPointerGetMotionEvents(DeviceIntPtr pPtr, xTimecoord *coords,
+ unsigned long start, unsigned long stop,
+ ScreenPtr pScreen);
+
+#ifndef XQUEUE_ASYNC
+/*
+ * xf86XqueSignal --
+ * Trap the signal from xqueue and let it be known that events are
+ * ready for collection
+ */
+
+static void
+xf86XqueSignal(int signum)
+{
+ xf86Info.mouseDev->xquePending = 1;
+ /*
+ * This is a hack, but it is the only reliable way I can find of letting
+ * the main select() loop know that there is more input waiting. Receiving
+ * a signal will interrupt select(), but there is no way I can find of
+ * dealing with events that come in between the end of processing the
+ * last set and when select() gets called.
+ *
+ * Suggestions for better ways of dealing with this without going back to
+ * asynchronous event processing are welcome.
+ */
+ write(xquePipe[1], "X", 1);
+ signal(SIGUSR2, xf86XqueSignal);
+}
+#endif
+
+
+/*
+ * xf86XqueRequest --
+ * Notice an i/o request from the xqueue.
+ */
+
+void
+xf86XqueRequest()
+{
+ xqEvent *XqueEvents = XqueQaddr->xq_events;
+ int XqueHead = XqueQaddr->xq_head;
+ char buf[100];
+
+ while (XqueHead != XqueQaddr->xq_tail)
+ {
+
+ switch(XqueEvents[XqueHead].xq_type) {
+
+ case XQ_BUTTON:
+ xf86PostMseEvent(xf86Info.pMouse,
+ ~(XqueEvents[XqueHead].xq_code) & 0x07, 0, 0);
+ break;
+
+ case XQ_MOTION:
+ xf86PostMseEvent(xf86Info.pMouse,
+ ~(XqueEvents[XqueHead].xq_code) & 0x07,
+ XqueEvents[XqueHead].xq_x,
+ XqueEvents[XqueHead].xq_y);
+ break;
+
+ case XQ_KEY:
+ xf86PostKbdEvent(XqueEvents[XqueHead].xq_code);
+ break;
+
+ default:
+ ErrorF("Unknown Xque Event: 0x%02x\n", XqueEvents[XqueHead].xq_type);
+ }
+
+ if ((++XqueHead) == XqueQaddr->xq_size) XqueHead = 0;
+ }
+
+ /* reenable the signal-processing */
+ xf86Info.inputPending = TRUE;
+#ifdef XQUEUE_ASYNC
+ signal(SIGUSR2, (void (*)()) xf86XqueRequest);
+#else
+#if 0
+ signal(SIGUSR2, (void (*)()) xf86XqueSignal);
+#endif
+#endif
+
+#ifndef XQUEUE_ASYNC
+ {
+ int rval;
+
+ while ((rval = read(xquePipe[0], buf, sizeof(buf))) > 0)
+#ifdef DEBUG
+ ErrorF("Read %d bytes from xquePipe[0]\n", rval);
+#else
+ ;
+#endif
+ }
+#endif
+
+ XqueQaddr->xq_head = XqueQaddr->xq_tail;
+ xf86Info.mouseDev->xquePending = 0;
+ XqueQaddr->xq_sigenable = 1; /* UNLOCK */
+}
+
+
+
+/*
+ * xf86XqueEnable --
+ * Enable the handling of the Xque
+ */
+
+static int
+xf86XqueEnable()
+{
+ static struct kd_quemode xqueMode;
+ static Bool was_here = FALSE;
+
+ if (!was_here) {
+ if ((xqueFd = open("/dev/mouse", O_RDONLY|O_NDELAY)) < 0)
+ {
+ if (xf86AllowMouseOpenFail) {
+ ErrorF("Cannot open /dev/mouse (%s) - Continuing...\n",
+ strerror(errno));
+ return (Success);
+ } else {
+ Error ("Cannot open /dev/mouse");
+ return (!Success);
+ }
+ }
+#ifndef XQUEUE_ASYNC
+ pipe(xquePipe);
+ fcntl(xquePipe[0],F_SETFL,fcntl(xquePipe[0],F_GETFL,0)|O_NDELAY);
+ fcntl(xquePipe[1],F_SETFL,fcntl(xquePipe[1],F_GETFL,0)|O_NDELAY);
+#endif
+ was_here = TRUE;
+ }
+
+ if (xf86Info.mouseDev->xqueSema++ == 0)
+ {
+#ifdef XQUEUE_ASYNC
+ (void) signal(SIGUSR2, (void (*)()) xf86XqueRequest);
+#else
+ (void) signal(SIGUSR2, (void (*)()) xf86XqueSignal);
+#endif
+ xqueMode.qsize = 64; /* max events */
+ xqueMode.signo = SIGUSR2;
+ ioctl(xf86Info.consoleFd, KDQUEMODE, NULL);
+
+ if (ioctl(xf86Info.consoleFd, KDQUEMODE, &xqueMode) < 0) {
+ Error ("Cannot set KDQUEMODE");
+ /* CONSTCOND */
+ return (!Success);
+ }
+
+ XqueQaddr = (xqEventQueue *)xqueMode.qaddr;
+ XqueQaddr->xq_sigenable = 1; /* UNLOCK */
+ }
+
+ return(Success);
+}
+
+
+
+/*
+ * xf86XqueDisable --
+ * disable the handling of the Xque
+ */
+
+static int
+xf86XqueDisable()
+{
+ if (xf86Info.mouseDev->xqueSema-- == 1)
+ {
+
+ XqueQaddr->xq_sigenable = 0; /* LOCK */
+
+ if (ioctl(xf86Info.consoleFd, KDQUEMODE, NULL) < 0) {
+ Error ("Cannot unset KDQUEMODE");
+ /* CONSTCOND */
+ return (!Success);
+ }
+ }
+
+ return(Success);
+}
+
+
+
+/*
+ * xf86XqueMseProc --
+ * Handle the initialization, etc. of a mouse
+ */
+
+int
+xf86XqueMseProc(pPointer, what)
+ DeviceIntPtr pPointer;
+ int what;
+{
+ MouseDevPtr mouse = MOUSE_DEV(pPointer);
+ unchar map[4];
+ int ret;
+
+ mouse->device = pPointer;
+
+ switch (what)
+ {
+ case DEVICE_INIT:
+
+ pPointer->public.on = FALSE;
+
+ map[1] = 1;
+ map[2] = 2;
+ map[3] = 3;
+ InitPointerDeviceStruct((DevicePtr)pPointer,
+ map,
+ 3,
+ miPointerGetMotionEvents,
+ (PtrCtrlProcPtr)xf86MseCtrl,
+ miPointerGetMotionBufferSize());
+ break;
+
+ case DEVICE_ON:
+ mouse->lastButtons = 0;
+ mouse->emulateState = 0;
+ pPointer->public.on = TRUE;
+ ret = xf86XqueEnable();
+#ifndef XQUEUE_ASYNC
+ if (xquePipe[0] != -1)
+ AddEnabledDevice(xquePipe[0]);
+#endif
+ return(ret);
+
+ case DEVICE_CLOSE:
+ case DEVICE_OFF:
+ pPointer->public.on = FALSE;
+ ret = xf86XqueDisable();
+#ifndef XQUEUE_ASYNC
+ if (xquePipe[0] != -1)
+ RemoveEnabledDevice(xquePipe[0]);
+#endif
+ return(ret);
+ }
+
+ return Success;
+}
+
+
+
+/*
+ * xf86XqueKbdProc --
+ * Handle the initialization, etc. of a keyboard.
+ */
+
+int
+xf86XqueKbdProc (pKeyboard, what)
+ DeviceIntPtr pKeyboard; /* Keyboard to manipulate */
+ int what; /* What to do to it */
+{
+ KeySymsRec keySyms;
+ CARD8 modMap[MAP_LENGTH];
+
+ switch (what) {
+
+ case DEVICE_INIT:
+
+ xf86KbdGetMapping(&keySyms, modMap);
+
+ /*
+ * Get also the initial led settings
+ */
+ ioctl(xf86Info.consoleFd, KDGETLED, &xf86Info.leds);
+
+ /*
+ * Perform final initialization of the system private keyboard
+ * structure and fill in various slots in the device record
+ * itself which couldn't be filled in before.
+ */
+ pKeyboard->public.on = FALSE;
+
+#ifdef XKB
+ if (noXkbExtension) {
+#endif
+ InitKeyboardDeviceStruct((DevicePtr)xf86Info.pKeyboard,
+ &keySyms,
+ modMap,
+ xf86KbdBell,
+ (KbdCtrlProcPtr)xf86KbdCtrl);
+#ifdef XKB
+ } else {
+ XkbComponentNamesRec names;
+ if (XkbInitialMap) {
+ if ((xf86Info.xkbkeymap = strchr(XkbInitialMap, '/')) != NULL)
+ xf86Info.xkbkeymap++;
+ else
+ xf86Info.xkbkeymap = XkbInitialMap;
+ }
+ if (xf86Info.xkbkeymap) {
+ names.keymap = xf86Info.xkbkeymap;
+ names.keycodes = NULL;
+ names.types = NULL;
+ names.compat = NULL;
+ names.symbols = NULL;
+ names.geometry = NULL;
+ } else {
+ names.keymap = NULL;
+ names.keycodes = xf86Info.xkbkeycodes;
+ names.types = xf86Info.xkbtypes;
+ names.compat = xf86Info.xkbcompat;
+ names.symbols = xf86Info.xkbsymbols;
+ names.geometry = xf86Info.xkbgeometry;
+ }
+ if ((xf86Info.xkbkeymap || xf86Info.xkbcomponents_specified)
+ && (xf86Info.xkbmodel == NULL || xf86Info.xkblayout == NULL)) {
+ xf86Info.xkbrules = NULL;
+ }
+ XkbSetRulesDflts(xf86Info.xkbrules, xf86Info.xkbmodel,
+ xf86Info.xkblayout, xf86Info.xkbvariant,
+ xf86Info.xkboptions);
+ XkbInitKeyboardDeviceStruct(pKeyboard,
+ &names,
+ &keySyms,
+ modMap,
+ xf86KbdBell,
+ (KbdCtrlProcPtr)xf86KbdCtrl);
+ }
+#endif
+
+ xf86InitKBD(TRUE);
+ break;
+
+ case DEVICE_ON:
+ pKeyboard->public.on = TRUE;
+ xf86InitKBD(FALSE);
+ return(xf86XqueEnable());
+
+ case DEVICE_CLOSE:
+ case DEVICE_OFF:
+ pKeyboard->public.on = FALSE;
+ return(xf86XqueDisable());
+ }
+
+ return (Success);
+}
+
+
+/*
+ * xf86XqueEvents --
+ * Get some events from our queue. Nothing to do here ...
+ */
+
+void
+xf86XqueEvents()
+{
+}
+
+#endif /* XQUEUE */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-22 01:44:02 +0000