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Diffstat (limited to 'nx-X11/programs/Xserver/hw/xfree86/os-support/sysv/xqueue.c')
-rw-r--r--nx-X11/programs/Xserver/hw/xfree86/os-support/sysv/xqueue.c543
1 files changed, 543 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/hw/xfree86/os-support/sysv/xqueue.c b/nx-X11/programs/Xserver/hw/xfree86/os-support/sysv/xqueue.c
new file mode 100644
index 000000000..6c2132cef
--- /dev/null
+++ b/nx-X11/programs/Xserver/hw/xfree86/os-support/sysv/xqueue.c
@@ -0,0 +1,543 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/sysv/xqueue.c,v 3.19 2000/02/10 22:33:45 dawes Exp $ */
+/*
+ * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany
+ * Copyright 1993-1999 by The XFree86 Project, Inc.
+ *
+ * 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 the copyright holders not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. The copyright holders make no
+ * representations about the suitability of this software for any purpose.
+ * It is provided "as is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS 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.
+ *
+ */
+/* $XConsortium: xqueue.c /main/8 1996/10/19 18:08:11 kaleb $ */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include <X11/X.h>
+#include "compiler.h"
+
+#include "xf86.h"
+#include "xf86Priv.h"
+#include "xf86_OSlib.h"
+#include "xf86Xinput.h"
+#include "xf86OSmouse.h"
+#include "xqueue.h"
+
+#ifdef XQUEUE
+
+static xqEventQueue *XqueQaddr;
+static int xqueFd = -1;
+#ifndef XQUEUE_ASYNC
+static int xquePipe[2];
+#endif
+
+#ifdef XKB
+#include "inputstr.h"
+#include <X11/extensions/XKB.h>
+#include <X11/extensions/XKBstr.h>
+#include <X11/extensions/XKBsrv.h>
+extern Bool noXkbExtension;
+#endif
+
+#include "xf86Xinput.h"
+#include "mipointer.h"
+
+typedef struct {
+ int xquePending;
+ int xqueSema;
+} XqInfoRec, *XqInfoPtr;
+
+InputInfoPtr XqMouse = NULL;
+InputInfoPtr XqKeyboard = NULL;
+
+#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)
+{
+ ((XqInfoPtr)(((MouseDevPtr)(XqMouse->private))->mousePriv))->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.
+ */
+#ifdef DEBUG
+ ErrorF("xf86XqueSignal\n");
+#endif
+ write(xquePipe[1], "X", 1);
+ signal(SIGUSR2, xf86XqueSignal);
+}
+#endif
+
+
+/*
+ * xf86XqueKbdProc --
+ * Handle the initialization, etc. of a keyboard.
+ */
+
+int
+xf86XqueKbdProc(DeviceIntPtr pKeyboard, int what)
+{
+ 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);
+ break;
+
+ case DEVICE_CLOSE:
+ case DEVICE_OFF:
+ pKeyboard->public.on = FALSE;
+ break;
+ }
+
+ return (Success);
+}
+
+
+/*
+ * xf86XqueEvents --
+ * Get some events from our queue. Nothing to do here ...
+ */
+
+void
+xf86XqueEvents()
+{
+}
+
+
+#ifdef XQUEUE_ASYNC
+static void XqDoInput(int signum);
+#endif
+
+void
+XqReadInput(InputInfoPtr pInfo)
+{
+ MouseDevPtr pMse;
+ XqInfoPtr pXq;
+ xqEvent *XqueEvents;
+ int XqueHead;
+ char buf[100];
+ signed char dx, dy;
+
+ if (xqueFd < 0)
+ return;
+
+ pMse = pInfo->private;
+ pXq = pMse->mousePriv;
+
+ XqueEvents = XqueQaddr->xq_events;
+ XqueHead = XqueQaddr->xq_head;
+
+ while (XqueHead != XqueQaddr->xq_tail) {
+ switch (XqueEvents[XqueHead].xq_type) {
+ case XQ_BUTTON:
+ pMse->PostEvent(pInfo, ~(XqueEvents[XqueHead].xq_code) & 0x07,
+ 0, 0, 0, 0);
+#ifdef DEBUG
+ ErrorF("xqueue: buttons: %d\n", ~(XqueEvents[XqueHead].xq_code) & 0x07);
+#endif
+ break;
+
+ case XQ_MOTION:
+ dx = (signed char)XqueEvents[XqueHead].xq_x;
+ dy = (signed char)XqueEvents[XqueHead].xq_y;
+ pMse->PostEvent(pInfo, ~(XqueEvents[XqueHead].xq_code) & 0x07,
+ (int)dx, (int)dy, 0, 0);
+#ifdef DEBUG
+ ErrorF("xqueue: Motion: (%d, %d) (buttons: %d)\n", dx, dy, ~(XqueEvents[XqueHead].xq_code) & 0x07);
+#endif
+ break;
+
+ case XQ_KEY:
+ /* XXX Need to deal with the keyboard part nicely. */
+#ifdef DEBUG
+ ErrorF("xqueue: key: %d\n", XqueEvents[XqueHead].xq_code);
+#endif
+ xf86PostKbdEvent(XqueEvents[XqueHead].xq_code);
+ break;
+ default:
+ xf86Msg(X_WARNING, "Unknown Xque Event: 0x%02x\n",
+ XqueEvents[XqueHead].xq_type);
+ }
+
+ if ((++XqueHead) == XqueQaddr->xq_size) XqueHead = 0;
+ xf86Info.inputPending = TRUE;
+ }
+
+ /* reenable the signal-processing */
+#ifdef XQUEUE_ASYNC
+ signal(SIGUSR2, XqDoInput);
+#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
+
+#ifdef DEBUG
+ ErrorF("Leaving XqReadInput()\n");
+#endif
+ pXq->xquePending = 0;
+ XqueQaddr->xq_head = XqueQaddr->xq_tail;
+ XqueQaddr->xq_sigenable = 1; /* UNLOCK */
+}
+
+#ifdef XQUEUE_ASYNC
+static void
+XqDoInput(int signum)
+{
+ if (XqMouse)
+ XqReadInput(XqMouse);
+}
+#endif
+
+static void
+XqBlock(pointer blockData, OSTimePtr pTimeout, pointer pReadmask)
+{
+ InputInfoPtr pInfo;
+ MouseDevPtr pMse;
+ XqInfoPtr pXq;
+ /*
+ * On MP SVR4 boxes, a race condition exists because the XQUEUE does
+ * not have anyway to lock it for exclusive access. This results in one
+ * processor putting something on the queue at the same time the other
+ * processor is taking it something off. The count of items in the queue
+ * can get off by 1. This just goes and checks to see if an extra event
+ * was put in the queue a during this period. The signal for this event
+ * was ignored while processing the previous event.
+ */
+
+ pInfo = blockData;
+ pMse = pInfo->private;
+ pXq = pMse-> mousePriv;
+ if (!pXq->xquePending) {
+#ifdef DEBUG
+ ErrorF("XqBlock: calling XqReadInput()\n");
+#endif
+ XqReadInput((InputInfoPtr)blockData);
+ } else {
+#ifdef DEBUG
+ ErrorF("XqBlock: not calling XqReadInput()\n");
+#endif
+ ;
+ }
+ /*
+ * Make sure that any events that come in here are passed on without.
+ * waiting for the next wakeup.
+ */
+ if (xf86Info.inputPending) {
+#ifdef DEBUG
+ ErrorF("XqBlock: calling ProcessInputEvents()\n");
+#endif
+ ProcessInputEvents();
+ } else {
+#ifdef DEBUG
+ ErrorF("XqBlock: not calling ProcessInputEvents()\n");
+#endif
+ ;
+ }
+}
+
+/*
+ * XqEnable --
+ * Enable the handling of the Xque
+ */
+
+static int
+XqEnable(InputInfoPtr pInfo)
+{
+ MouseDevPtr pMse;
+ XqInfoPtr pXq;
+ static struct kd_quemode xqueMode;
+ static Bool was_here = FALSE;
+
+ pMse = pInfo->private;
+ pXq = pMse->mousePriv;
+
+ if (xqueFd < 0) {
+ if ((xqueFd = open("/dev/mouse", O_RDONLY | O_NDELAY)) < 0) {
+ if (xf86GetAllowMouseOpenFail()) {
+ xf86Msg(X_WARNING,
+ "%s: Cannot open /dev/mouse (%s) - Continuing...\n",
+ pInfo->name, strerror(errno));
+ return Success;
+ } else {
+ xf86Msg(X_ERROR, "%s: Cannot open /dev/mouse (%s)\n",
+ pInfo->name, strerror(errno));
+ return !Success;
+ }
+ }
+ }
+#ifndef XQUEUE_ASYNC
+ if (!was_here) {
+ 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);
+ was_here = TRUE;
+ }
+#endif
+
+ if (pXq->xqueSema++ == 0) {
+#ifdef XQUEUE_ASYNC
+ (void) signal(SIGUSR2, XqDoInput);
+#else
+ (void) signal(SIGUSR2, xf86XqueSignal);
+#endif
+ xqueMode.qsize = 64; /* max events */
+ xqueMode.signo = SIGUSR2;
+ ioctl(xf86Info.consoleFd, KDQUEMODE, NULL);
+
+ if (ioctl(xf86Info.consoleFd, KDQUEMODE, &xqueMode) < 0) {
+ xf86Msg(X_ERROR, "%s: Cannot set KDQUEMODE", pInfo->name);
+ return !Success;
+ }
+ XqueQaddr = (xqEventQueue *)xqueMode.qaddr;
+ XqueQaddr->xq_sigenable = 1; /* UNLOCK */
+ }
+
+ return Success;
+}
+
+
+
+/*
+ * xf86XqueDisable --
+ * disable the handling of the Xque
+ */
+
+static int
+XqDisable(InputInfoPtr pInfo)
+{
+ MouseDevPtr pMse;
+ XqInfoPtr pXq;
+
+ pMse = pInfo->private;
+ pXq = pMse->mousePriv;
+
+ if (pXq->xqueSema-- == 1)
+ {
+ XqueQaddr->xq_sigenable = 0; /* LOCK */
+
+ if (ioctl(xf86Info.consoleFd, KDQUEMODE, NULL) < 0) {
+ xf86Msg(X_ERROR, "%s: Cannot unset KDQUEMODE", pInfo->name);
+ return !Success;
+ }
+ }
+
+ if (xqueFd >= 0) {
+ close(xqueFd);
+ xqueFd = -1;
+ }
+
+ return Success;
+}
+
+/*
+ * XqMouseProc --
+ * Handle the initialization, etc. of a mouse
+ */
+
+static int
+XqMouseProc(DeviceIntPtr pPointer, int what)
+{
+ InputInfoPtr pInfo;
+ MouseDevPtr pMse;
+ unchar map[4];
+ int ret;
+
+ pInfo = pPointer->public.devicePrivate;
+ pMse = pInfo->private;
+ pMse->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,
+ pMse->Ctrl,
+ miPointerGetMotionBufferSize());
+ /* X valuator */
+ xf86InitValuatorAxisStruct(pPointer, 0, 0, -1, 1, 0, 1);
+ xf86InitValuatorDefaults(pPointer, 0);
+ /* Y valuator */
+ xf86InitValuatorAxisStruct(pPointer, 1, 0, -1, 1, 0, 1);
+ xf86InitValuatorDefaults(pPointer, 1);
+ xf86MotionHistoryAllocate(pInfo);
+ RegisterBlockAndWakeupHandlers(XqBlock, (WakeupHandlerProcPtr)NoopDDA,
+ pInfo);
+ break;
+
+ case DEVICE_ON:
+ pMse->lastButtons = 0;
+ pMse->lastMappedButtons = 0;
+ pMse->emulateState = 0;
+ pPointer->public.on = TRUE;
+ ret = XqEnable(pInfo);
+#ifndef XQUEUE_ASYNC
+ if (xquePipe[0] != -1) {
+ pInfo->fd = xquePipe[0];
+ AddEnabledDevice(xquePipe[0]);
+ }
+#endif
+ return ret;
+
+ case DEVICE_CLOSE:
+ case DEVICE_OFF:
+ pPointer->public.on = FALSE;
+ ret = XqDisable(pInfo);
+#ifndef XQUEUE_ASYNC
+ if (xquePipe[0] != -1) {
+ RemoveEnabledDevice(xquePipe[0]);
+ pInfo->fd = -1;
+ }
+#endif
+ return ret;
+ }
+ return Success;
+}
+
+Bool
+XqueueMousePreInit(InputInfoPtr pInfo, const char *protocol, int flags)
+{
+ MouseDevPtr pMse;
+ XqInfoPtr pXq;
+
+ pMse = pInfo->private;
+ pMse->protocol = protocol;
+ xf86Msg(X_CONFIG, "%s: Protocol: %s\n", pInfo->name, protocol);
+ pXq = pMse->mousePriv = xnfcalloc(sizeof(XqInfoRec), 1);
+
+ /* Collect the options, and process the common options. */
+ xf86CollectInputOptions(pInfo, NULL, NULL);
+ xf86ProcessCommonOptions(pInfo, pInfo->options);
+
+ /* Process common mouse options (like Emulate3Buttons, etc). */
+ pMse->CommonOptions(pInfo);
+
+ /* Setup the local procs. */
+ pInfo->device_control = XqMouseProc;
+#ifdef XQUEUE_ASYNC
+ pInfo->read_input = NULL;
+#else
+ pInfo->read_input = XqReadInput;
+#endif
+ pInfo->fd = -1;
+
+ XqMouse = pInfo;
+
+ pInfo->flags |= XI86_CONFIGURED;
+ return TRUE;
+}
+
+#endif /* XQUEUE */
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