xserver git update 11/5/2010

1 files changed, 646 insertions, 646 deletions

diff --git a/xorg-server/hw/xfree86/dri2/dri2ext.c b/xorg-server/hw/xfree86/dri2/dri2ext.c
index 17df1304e..8bed02055 100644
--- a/xorg-server/hw/xfree86/dri2/dri2ext.c
+++ b/xorg-server/hw/xfree86/dri2/dri2ext.c
@@ -1,646 +1,646 @@
-/*
- * Copyright © 2008 Red Hat, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Soft-
- * ware"), to deal in the Software without restriction, including without
- * limitation the rights to use, copy, modify, merge, publish, distribute,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, provided that the above copyright
- * notice(s) and this permission notice appear in all copies of the Soft-
- * ware and that both the above copyright notice(s) and this permission
- * notice appear in supporting documentation.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
- * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
- * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
- * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
- * QUENTIAL 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 PERFOR-
- * MANCE OF THIS SOFTWARE.
- *
- * Except as contained in this notice, the name of a copyright holder shall
- * not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization of
- * the copyright holder.
- *
- * Authors:
- *   Kristian Høgsberg (krh@redhat.com)
- */
-
-#ifdef HAVE_XORG_CONFIG_H
-#include <xorg-config.h>
-#endif
-
-#include <X11/X.h>
-#include <X11/Xproto.h>
-#include <X11/extensions/dri2proto.h>
-#include <X11/extensions/xfixeswire.h>
-#include "dixstruct.h"
-#include "scrnintstr.h"
-#include "pixmapstr.h"
-#include "extnsionst.h"
-#include "xf86drm.h"
-#include "xfixes.h"
-#include "dri2.h"
-#include "protocol-versions.h"
-
-/* The only xf86 include */
-#include "xf86Module.h"
-
-static ExtensionEntry	*dri2Extension;
-
-static Bool
-validDrawable(ClientPtr client, XID drawable, Mask access_mode,
-	      DrawablePtr *pDrawable, int *status)
-{
-    *status = dixLookupDrawable(pDrawable, drawable, client, 0, access_mode);
-    if (*status != Success) {
-	client->errorValue = drawable;
-	return FALSE;
-    }
-
-    return TRUE;
-}
-
-static int
-ProcDRI2QueryVersion(ClientPtr client)
-{
-    REQUEST(xDRI2QueryVersionReq);
-    xDRI2QueryVersionReply rep;
-    int n;
-
-    if (client->swapped)
-	swaps(&stuff->length, n);
-
-    REQUEST_SIZE_MATCH(xDRI2QueryVersionReq);
-    rep.type = X_Reply;
-    rep.length = 0;
-    rep.sequenceNumber = client->sequence;
-    rep.majorVersion = dri2_major;
-    rep.minorVersion = dri2_minor;
-
-    if (client->swapped) {
-    	swaps(&rep.sequenceNumber, n);
-    	swapl(&rep.length, n);
-	swapl(&rep.majorVersion, n);
-	swapl(&rep.minorVersion, n);
-    }
-
-    WriteToClient(client, sizeof(xDRI2QueryVersionReply), &rep);
-
-    return client->noClientException;
-}
-
-static int
-ProcDRI2Connect(ClientPtr client)
-{
-    REQUEST(xDRI2ConnectReq);
-    xDRI2ConnectReply rep;
-    DrawablePtr pDraw;
-    int fd, status;
-    const char *driverName;
-    const char *deviceName;
-
-    REQUEST_SIZE_MATCH(xDRI2ConnectReq);
-    if (!validDrawable(client, stuff->window, DixGetAttrAccess,
-		       &pDraw, &status))
-	return status;
-    
-    rep.type = X_Reply;
-    rep.length = 0;
-    rep.sequenceNumber = client->sequence;
-    rep.driverNameLength = 0;
-    rep.deviceNameLength = 0;
-
-    if (!DRI2Connect(pDraw->pScreen,
-		     stuff->driverType, &fd, &driverName, &deviceName))
-	goto fail;
-
-    rep.driverNameLength = strlen(driverName);
-    rep.deviceNameLength = strlen(deviceName);
-    rep.length = (rep.driverNameLength + 3) / 4 +
-	    (rep.deviceNameLength + 3) / 4;
-
- fail:
-    WriteToClient(client, sizeof(xDRI2ConnectReply), &rep);
-    WriteToClient(client, rep.driverNameLength, driverName);
-    WriteToClient(client, rep.deviceNameLength, deviceName);
-
-    return client->noClientException;
-}
-
-static int
-ProcDRI2Authenticate(ClientPtr client)
-{
-    REQUEST(xDRI2AuthenticateReq);
-    xDRI2AuthenticateReply rep;
-    DrawablePtr pDraw;
-    int status;
-
-    REQUEST_SIZE_MATCH(xDRI2AuthenticateReq);
-    if (!validDrawable(client, stuff->window, DixGetAttrAccess,
-		       &pDraw, &status))
-	return status;
-
-    rep.type = X_Reply;
-    rep.sequenceNumber = client->sequence;
-    rep.length = 0;
-    rep.authenticated = DRI2Authenticate(pDraw->pScreen, stuff->magic);
-    WriteToClient(client, sizeof(xDRI2AuthenticateReply), &rep);
-
-    return client->noClientException;
-}
-
-static int
-ProcDRI2CreateDrawable(ClientPtr client)
-{
-    REQUEST(xDRI2CreateDrawableReq);
-    DrawablePtr pDrawable;
-    int status;
-
-    REQUEST_SIZE_MATCH(xDRI2CreateDrawableReq);
-
-    if (!validDrawable(client, stuff->drawable, DixAddAccess,
-		       &pDrawable, &status))
-	return status;
-
-    status = DRI2CreateDrawable(pDrawable);
-    if (status != Success)
-	return status;
-
-    return client->noClientException;
-}
-
-static int
-ProcDRI2DestroyDrawable(ClientPtr client)
-{
-    REQUEST(xDRI2DestroyDrawableReq);
-    DrawablePtr pDrawable;
-    int status;
-
-    REQUEST_SIZE_MATCH(xDRI2DestroyDrawableReq);
-    if (!validDrawable(client, stuff->drawable, DixRemoveAccess,
-		       &pDrawable, &status))
-	return status;
-
-    return client->noClientException;
-}
-
-
-static void
-send_buffers_reply(ClientPtr client, DrawablePtr pDrawable,
-		   DRI2BufferPtr *buffers, int count, int width, int height)
-{
-    xDRI2GetBuffersReply rep;
-    int skip = 0;
-    int i;
-
-    if (pDrawable->type == DRAWABLE_WINDOW) {
-	for (i = 0; i < count; i++) {
-	    /* Do not send the real front buffer of a window to the client.
-	     */
-	    if (buffers[i]->attachment == DRI2BufferFrontLeft) {
-		skip++;
-		continue;
-	    }
-	}
-    }
-
-    rep.type = X_Reply;
-    rep.length = (count - skip) * sizeof(xDRI2Buffer) / 4;
-    rep.sequenceNumber = client->sequence;
-    rep.width = width;
-    rep.height = height;
-    rep.count = count - skip;
-    WriteToClient(client, sizeof(xDRI2GetBuffersReply), &rep);
-
-    for (i = 0; i < count; i++) {
-	xDRI2Buffer buffer;
-
-	/* Do not send the real front buffer of a window to the client.
-	 */
-	if ((pDrawable->type == DRAWABLE_WINDOW)
-	    && (buffers[i]->attachment == DRI2BufferFrontLeft)) {
-	    continue;
-	}
-
-	buffer.attachment = buffers[i]->attachment;
-	buffer.name = buffers[i]->name;
-	buffer.pitch = buffers[i]->pitch;
-	buffer.cpp = buffers[i]->cpp;
-	buffer.flags = buffers[i]->flags;
-	WriteToClient(client, sizeof(xDRI2Buffer), &buffer);
-    }
-}
-
-
-static int
-ProcDRI2GetBuffers(ClientPtr client)
-{
-    REQUEST(xDRI2GetBuffersReq);
-    DrawablePtr pDrawable;
-    DRI2BufferPtr *buffers;
-    int status, width, height, count;
-    unsigned int *attachments;
-
-    REQUEST_FIXED_SIZE(xDRI2GetBuffersReq, stuff->count * 4);
-    if (!validDrawable(client, stuff->drawable, DixReadAccess | DixWriteAccess,
-		       &pDrawable, &status))
-	return status;
-
-    if (DRI2ThrottleClient(client, pDrawable))
-	return client->noClientException;
-
-    attachments = (unsigned int *) &stuff[1];
-    buffers = DRI2GetBuffers(pDrawable, &width, &height,
-			     attachments, stuff->count, &count);
-
-
-    send_buffers_reply(client, pDrawable, buffers, count, width, height);
-
-    return client->noClientException;
-}
-
-static int
-ProcDRI2GetBuffersWithFormat(ClientPtr client)
-{
-    REQUEST(xDRI2GetBuffersReq);
-    DrawablePtr pDrawable;
-    DRI2BufferPtr *buffers;
-    int status, width, height, count;
-    unsigned int *attachments;
-
-    REQUEST_FIXED_SIZE(xDRI2GetBuffersReq, stuff->count * (2 * 4));
-    if (!validDrawable(client, stuff->drawable, DixReadAccess | DixWriteAccess,
-		       &pDrawable, &status))
-	return status;
-
-    if (DRI2ThrottleClient(client, pDrawable))
-	return client->noClientException;
-
-    attachments = (unsigned int *) &stuff[1];
-    buffers = DRI2GetBuffersWithFormat(pDrawable, &width, &height,
-				       attachments, stuff->count, &count);
-
-    send_buffers_reply(client, pDrawable, buffers, count, width, height);
-
-    return client->noClientException;
-}
-
-static int
-ProcDRI2CopyRegion(ClientPtr client)
-{
-    REQUEST(xDRI2CopyRegionReq);
-    xDRI2CopyRegionReply rep;
-    DrawablePtr pDrawable;
-    int status;
-    RegionPtr pRegion;
-
-    REQUEST_SIZE_MATCH(xDRI2CopyRegionReq);
-
-    if (!validDrawable(client, stuff->drawable, DixWriteAccess,
-		       &pDrawable, &status))
-	return status;
-
-    VERIFY_REGION(pRegion, stuff->region, client, DixReadAccess);
-
-    status = DRI2CopyRegion(pDrawable, pRegion, stuff->dest, stuff->src);
-    if (status != Success)
-	return status;
-
-    /* CopyRegion needs to be a round trip to make sure the X server
-     * queues the swap buffer rendering commands before the DRI client
-     * continues rendering.  The reply has a bitmask to signal the
-     * presense of optional return values as well, but we're not using
-     * that yet.
-     */
-
-    rep.type = X_Reply;
-    rep.length = 0;
-    rep.sequenceNumber = client->sequence;
-
-    WriteToClient(client, sizeof(xDRI2CopyRegionReply), &rep);
-
-    return client->noClientException;
-}
-
-static void
-load_swap_reply(xDRI2SwapBuffersReply *rep, CARD64 sbc)
-{
-    rep->swap_hi = sbc >> 32;
-    rep->swap_lo = sbc & 0xffffffff;
-}
-
-static CARD64
-vals_to_card64(CARD32 lo, CARD32 hi)
-{
-    return (CARD64)hi << 32 | lo;
-}
-
-static void
-DRI2SwapEvent(ClientPtr client, void *data, int type, CARD64 ust, CARD64 msc,
-	      CARD64 sbc)
-{
-    xDRI2BufferSwapComplete event;
-    DrawablePtr pDrawable = data;
-
-    event.type = DRI2EventBase + DRI2_BufferSwapComplete;
-    event.sequenceNumber = client->sequence;
-    event.event_type = type;
-    event.drawable = pDrawable->id;
-    event.ust_hi = (CARD64)ust >> 32;
-    event.ust_lo = ust & 0xffffffff;
-    event.msc_hi = (CARD64)msc >> 32;
-    event.msc_lo = msc & 0xffffffff;
-    event.sbc_hi = (CARD64)sbc >> 32;
-    event.sbc_lo = sbc & 0xffffffff;
-
-    WriteEventsToClient(client, 1, (xEvent *)&event);
-}
-
-static int
-ProcDRI2SwapBuffers(ClientPtr client)
-{
-    REQUEST(xDRI2SwapBuffersReq);
-    xDRI2SwapBuffersReply rep;
-    DrawablePtr pDrawable;
-    CARD64 target_msc, divisor, remainder, swap_target;
-    int status;
-
-    REQUEST_SIZE_MATCH(xDRI2SwapBuffersReq);
-
-    if (!validDrawable(client, stuff->drawable,
-		       DixReadAccess | DixWriteAccess, &pDrawable, &status))
-	return status;
-
-    /*
-     * Ensures an out of control client can't exhaust our swap queue, and
-     * also orders swaps.
-     */
-    if (DRI2ThrottleClient(client, pDrawable))
-	return client->noClientException;
-
-    target_msc = vals_to_card64(stuff->target_msc_lo, stuff->target_msc_hi);
-    divisor = vals_to_card64(stuff->divisor_lo, stuff->divisor_hi);
-    remainder = vals_to_card64(stuff->remainder_lo, stuff->remainder_hi);
-
-    status = DRI2SwapBuffers(client, pDrawable, target_msc, divisor, remainder,
-			     &swap_target, DRI2SwapEvent, pDrawable);
-    if (status != Success)
-	return BadDrawable;
-
-    rep.type = X_Reply;
-    rep.length = 0;
-    rep.sequenceNumber = client->sequence;
-    load_swap_reply(&rep, swap_target);
-
-    WriteToClient(client, sizeof(xDRI2SwapBuffersReply), &rep);
-
-    return client->noClientException;
-}
-
-static void
-load_msc_reply(xDRI2MSCReply *rep, CARD64 ust, CARD64 msc, CARD64 sbc)
-{
-    rep->ust_hi = ust >> 32;
-    rep->ust_lo = ust & 0xffffffff;
-    rep->msc_hi = msc >> 32;
-    rep->msc_lo = msc & 0xffffffff;
-    rep->sbc_hi = sbc >> 32;
-    rep->sbc_lo = sbc & 0xffffffff;
-}
-
-static int
-ProcDRI2GetMSC(ClientPtr client)
-{
-    REQUEST(xDRI2GetMSCReq);
-    xDRI2MSCReply rep;
-    DrawablePtr pDrawable;
-    CARD64 ust, msc, sbc;
-    int status;
-
-    REQUEST_SIZE_MATCH(xDRI2GetMSCReq);
-
-    if (!validDrawable(client, stuff->drawable, DixReadAccess, &pDrawable,
-		       &status))
-	return status;
-
-    status = DRI2GetMSC(pDrawable, &ust, &msc, &sbc);
-    if (status != Success)
-	return status;
-
-    rep.type = X_Reply;
-    rep.length = 0;
-    rep.sequenceNumber = client->sequence;
-    load_msc_reply(&rep, ust, msc, sbc);
-
-    WriteToClient(client, sizeof(xDRI2MSCReply), &rep);
-
-    return client->noClientException;
-}
-
-static int
-ProcDRI2WaitMSC(ClientPtr client)
-{
-    REQUEST(xDRI2WaitMSCReq);
-    DrawablePtr pDrawable;
-    CARD64 target, divisor, remainder;
-    int status;
-
-    /* FIXME: in restart case, client may be gone at this point */
-
-    REQUEST_SIZE_MATCH(xDRI2WaitMSCReq);
-
-    if (!validDrawable(client, stuff->drawable, DixReadAccess, &pDrawable,
-		       &status))
-	return status;
-
-    target = vals_to_card64(stuff->target_msc_lo, stuff->target_msc_hi);
-    divisor = vals_to_card64(stuff->divisor_lo, stuff->divisor_hi);
-    remainder = vals_to_card64(stuff->remainder_lo, stuff->remainder_hi);
-
-    status = DRI2WaitMSC(client, pDrawable, target, divisor, remainder);
-    if (status != Success)
-	return status;
-
-    return client->noClientException;
-}
-
-int
-ProcDRI2WaitMSCReply(ClientPtr client, CARD64 ust, CARD64 msc, CARD64 sbc)
-{
-    xDRI2MSCReply rep;
-
-    rep.type = X_Reply;
-    rep.length = 0;
-    rep.sequenceNumber = client->sequence;
-    load_msc_reply(&rep, ust, msc, sbc);
-
-    WriteToClient(client, sizeof(xDRI2MSCReply), &rep);
-
-    return client->noClientException;
-}
-
-static int
-ProcDRI2SwapInterval(ClientPtr client)
-{
-    REQUEST(xDRI2SwapIntervalReq);
-    DrawablePtr pDrawable;
-    int status;
-
-    /* FIXME: in restart case, client may be gone at this point */
-
-    REQUEST_SIZE_MATCH(xDRI2SwapIntervalReq);
-
-    if (!validDrawable(client, stuff->drawable, DixReadAccess | DixWriteAccess,
-		       &pDrawable, &status))
-	return status;
-
-    DRI2SwapInterval(pDrawable, stuff->interval);
-
-    return client->noClientException;
-}
-
-static int
-ProcDRI2WaitSBC(ClientPtr client)
-{
-    REQUEST(xDRI2WaitSBCReq);
-    xDRI2MSCReply rep;
-    DrawablePtr pDrawable;
-    CARD64 target, ust, msc, sbc;
-    int status;
-
-    REQUEST_SIZE_MATCH(xDRI2WaitSBCReq);
-
-    if (!validDrawable(client, stuff->drawable, DixReadAccess, &pDrawable,
-		       &status))
-	return status;
-
-    target = vals_to_card64(stuff->target_sbc_lo, stuff->target_sbc_hi);
-    status = DRI2WaitSBC(client, pDrawable, target, &ust, &msc, &sbc);
-    if (status != Success)
-	return status;
-
-    rep.type = X_Reply;
-    rep.length = 0;
-    rep.sequenceNumber = client->sequence;
-    load_msc_reply(&rep, ust, msc, sbc);
-
-    WriteToClient(client, sizeof(xDRI2MSCReply), &rep);
-
-    return client->noClientException;
-}
-
-static int
-ProcDRI2Dispatch (ClientPtr client)
-{
-    REQUEST(xReq);
-    
-    switch (stuff->data) {
-    case X_DRI2QueryVersion:
-	return ProcDRI2QueryVersion(client);
-    }
-
-    if (!LocalClient(client))
-	return BadRequest;
-
-    switch (stuff->data) {
-    case X_DRI2Connect:
-	return ProcDRI2Connect(client);
-    case X_DRI2Authenticate:
-	return ProcDRI2Authenticate(client);
-    case X_DRI2CreateDrawable:
-	return ProcDRI2CreateDrawable(client);
-    case X_DRI2DestroyDrawable:
-	return ProcDRI2DestroyDrawable(client);
-    case X_DRI2GetBuffers:
-	return ProcDRI2GetBuffers(client);
-    case X_DRI2CopyRegion:
-	return ProcDRI2CopyRegion(client);
-    case X_DRI2GetBuffersWithFormat:
-	return ProcDRI2GetBuffersWithFormat(client);
-    case X_DRI2SwapBuffers:
-	return ProcDRI2SwapBuffers(client);
-    case X_DRI2GetMSC:
-	return ProcDRI2GetMSC(client);
-    case X_DRI2WaitMSC:
-	return ProcDRI2WaitMSC(client);
-    case X_DRI2WaitSBC:
-	return ProcDRI2WaitSBC(client);
-    case X_DRI2SwapInterval:
-	return ProcDRI2SwapInterval(client);
-    default:
-	return BadRequest;
-    }
-}
-
-static int
-SProcDRI2Connect(ClientPtr client)
-{
-    REQUEST(xDRI2ConnectReq);
-    xDRI2ConnectReply rep;
-    int n;
-
-    /* If the client is swapped, it's not local.  Talk to the hand. */
-
-    swaps(&stuff->length, n);
-    if (sizeof(*stuff) / 4 != client->req_len)
-	return BadLength;
-
-    rep.sequenceNumber = client->sequence;
-    swaps(&rep.sequenceNumber, n);
-    rep.length = 0;
-    rep.driverNameLength = 0;
-    rep.deviceNameLength = 0;
-
-    return client->noClientException;
-}
-
-static int
-SProcDRI2Dispatch (ClientPtr client)
-{
-    REQUEST(xReq);
-
-    /*
-     * Only local clients are allowed DRI access, but remote clients
-     * still need these requests to find out cleanly.
-     */
-    switch (stuff->data)
-    {
-    case X_DRI2QueryVersion:
-	return ProcDRI2QueryVersion(client);
-    case X_DRI2Connect:
-	return SProcDRI2Connect(client);
-    default:
-	return BadRequest;
-    }
-}
-
-int DRI2EventBase;
-
-static void
-DRI2ExtensionInit(void)
-{
-    dri2Extension = AddExtension(DRI2_NAME,
-				 DRI2NumberEvents,
-				 DRI2NumberErrors,
-				 ProcDRI2Dispatch,
-				 SProcDRI2Dispatch,
-				 NULL,
-				 StandardMinorOpcode);
-
-    DRI2EventBase = dri2Extension->eventBase;
-}
-
-extern Bool noDRI2Extension;
-
-_X_HIDDEN ExtensionModule dri2ExtensionModule = {
-    DRI2ExtensionInit,
-    DRI2_NAME,
-    &noDRI2Extension,
-    NULL,
-    NULL
-};
+/*

+ * Copyright © 2008 Red Hat, Inc.

+ *

+ * Permission is hereby granted, free of charge, to any person obtaining a

+ * copy of this software and associated documentation files (the "Soft-

+ * ware"), to deal in the Software without restriction, including without

+ * limitation the rights to use, copy, modify, merge, publish, distribute,

+ * and/or sell copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, provided that the above copyright

+ * notice(s) and this permission notice appear in all copies of the Soft-

+ * ware and that both the above copyright notice(s) and this permission

+ * notice appear in supporting documentation.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-

+ * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY

+ * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN

+ * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-

+ * QUENTIAL 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 PERFOR-

+ * MANCE OF THIS SOFTWARE.

+ *

+ * Except as contained in this notice, the name of a copyright holder shall

+ * not be used in advertising or otherwise to promote the sale, use or

+ * other dealings in this Software without prior written authorization of

+ * the copyright holder.

+ *

+ * Authors:

+ *   Kristian Høgsberg (krh@redhat.com)

+ */

+

+#ifdef HAVE_XORG_CONFIG_H

+#include <xorg-config.h>

+#endif

+

+#include <X11/X.h>

+#include <X11/Xproto.h>

+#include <X11/extensions/dri2proto.h>

+#include <X11/extensions/xfixeswire.h>

+#include "dixstruct.h"

+#include "scrnintstr.h"

+#include "pixmapstr.h"

+#include "extnsionst.h"

+#include "xf86drm.h"

+#include "xfixes.h"

+#include "dri2.h"

+#include "protocol-versions.h"

+

+/* The only xf86 include */

+#include "xf86Module.h"

+

+static ExtensionEntry	*dri2Extension;

+

+static Bool

+validDrawable(ClientPtr client, XID drawable, Mask access_mode,

+	      DrawablePtr *pDrawable, int *status)

+{

+    *status = dixLookupDrawable(pDrawable, drawable, client, 0, access_mode);

+    if (*status != Success) {

+	client->errorValue = drawable;

+	return FALSE;

+    }

+

+    return TRUE;

+}

+

+static int

+ProcDRI2QueryVersion(ClientPtr client)

+{

+    REQUEST(xDRI2QueryVersionReq);

+    xDRI2QueryVersionReply rep;

+    int n;

+

+    if (client->swapped)

+	swaps(&stuff->length, n);

+

+    REQUEST_SIZE_MATCH(xDRI2QueryVersionReq);

+    rep.type = X_Reply;

+    rep.length = 0;

+    rep.sequenceNumber = client->sequence;

+    rep.majorVersion = dri2_major;

+    rep.minorVersion = dri2_minor;

+

+    if (client->swapped) {

+    	swaps(&rep.sequenceNumber, n);

+    	swapl(&rep.length, n);

+	swapl(&rep.majorVersion, n);

+	swapl(&rep.minorVersion, n);

+    }

+

+    WriteToClient(client, sizeof(xDRI2QueryVersionReply), &rep);

+

+    return client->noClientException;

+}

+

+static int

+ProcDRI2Connect(ClientPtr client)

+{

+    REQUEST(xDRI2ConnectReq);

+    xDRI2ConnectReply rep;

+    DrawablePtr pDraw;

+    int fd, status;

+    const char *driverName;

+    const char *deviceName;

+

+    REQUEST_SIZE_MATCH(xDRI2ConnectReq);

+    if (!validDrawable(client, stuff->window, DixGetAttrAccess,

+		       &pDraw, &status))

+	return status;

+    

+    rep.type = X_Reply;

+    rep.length = 0;

+    rep.sequenceNumber = client->sequence;

+    rep.driverNameLength = 0;

+    rep.deviceNameLength = 0;

+

+    if (!DRI2Connect(pDraw->pScreen,

+		     stuff->driverType, &fd, &driverName, &deviceName))

+	goto fail;

+

+    rep.driverNameLength = strlen(driverName);

+    rep.deviceNameLength = strlen(deviceName);

+    rep.length = (rep.driverNameLength + 3) / 4 +

+	    (rep.deviceNameLength + 3) / 4;

+

+ fail:

+    WriteToClient(client, sizeof(xDRI2ConnectReply), &rep);

+    WriteToClient(client, rep.driverNameLength, driverName);

+    WriteToClient(client, rep.deviceNameLength, deviceName);

+

+    return client->noClientException;

+}

+

+static int

+ProcDRI2Authenticate(ClientPtr client)

+{

+    REQUEST(xDRI2AuthenticateReq);

+    xDRI2AuthenticateReply rep;

+    DrawablePtr pDraw;

+    int status;

+

+    REQUEST_SIZE_MATCH(xDRI2AuthenticateReq);

+    if (!validDrawable(client, stuff->window, DixGetAttrAccess,

+		       &pDraw, &status))

+	return status;

+

+    rep.type = X_Reply;

+    rep.sequenceNumber = client->sequence;

+    rep.length = 0;

+    rep.authenticated = DRI2Authenticate(pDraw->pScreen, stuff->magic);

+    WriteToClient(client, sizeof(xDRI2AuthenticateReply), &rep);

+

+    return client->noClientException;

+}

+

+static int

+ProcDRI2CreateDrawable(ClientPtr client)

+{

+    REQUEST(xDRI2CreateDrawableReq);

+    DrawablePtr pDrawable;

+    int status;

+

+    REQUEST_SIZE_MATCH(xDRI2CreateDrawableReq);

+

+    if (!validDrawable(client, stuff->drawable, DixAddAccess,

+		       &pDrawable, &status))

+	return status;

+

+    status = DRI2CreateDrawable(client, pDrawable, stuff->drawable);

+    if (status != Success)

+	return status;

+

+    return client->noClientException;

+}

+

+static int

+ProcDRI2DestroyDrawable(ClientPtr client)

+{

+    REQUEST(xDRI2DestroyDrawableReq);

+    DrawablePtr pDrawable;

+    int status;

+

+    REQUEST_SIZE_MATCH(xDRI2DestroyDrawableReq);

+    if (!validDrawable(client, stuff->drawable, DixRemoveAccess,

+		       &pDrawable, &status))

+	return status;

+

+    return client->noClientException;

+}

+

+

+static void

+send_buffers_reply(ClientPtr client, DrawablePtr pDrawable,

+		   DRI2BufferPtr *buffers, int count, int width, int height)

+{

+    xDRI2GetBuffersReply rep;

+    int skip = 0;

+    int i;

+

+    if (pDrawable->type == DRAWABLE_WINDOW) {

+	for (i = 0; i < count; i++) {

+	    /* Do not send the real front buffer of a window to the client.

+	     */

+	    if (buffers[i]->attachment == DRI2BufferFrontLeft) {

+		skip++;

+		continue;

+	    }

+	}

+    }

+

+    rep.type = X_Reply;

+    rep.length = (count - skip) * sizeof(xDRI2Buffer) / 4;

+    rep.sequenceNumber = client->sequence;

+    rep.width = width;

+    rep.height = height;

+    rep.count = count - skip;

+    WriteToClient(client, sizeof(xDRI2GetBuffersReply), &rep);

+

+    for (i = 0; i < count; i++) {

+	xDRI2Buffer buffer;

+

+	/* Do not send the real front buffer of a window to the client.

+	 */

+	if ((pDrawable->type == DRAWABLE_WINDOW)

+	    && (buffers[i]->attachment == DRI2BufferFrontLeft)) {

+	    continue;

+	}

+

+	buffer.attachment = buffers[i]->attachment;

+	buffer.name = buffers[i]->name;

+	buffer.pitch = buffers[i]->pitch;

+	buffer.cpp = buffers[i]->cpp;

+	buffer.flags = buffers[i]->flags;

+	WriteToClient(client, sizeof(xDRI2Buffer), &buffer);

+    }

+}

+

+

+static int

+ProcDRI2GetBuffers(ClientPtr client)

+{

+    REQUEST(xDRI2GetBuffersReq);

+    DrawablePtr pDrawable;

+    DRI2BufferPtr *buffers;

+    int status, width, height, count;

+    unsigned int *attachments;

+

+    REQUEST_FIXED_SIZE(xDRI2GetBuffersReq, stuff->count * 4);

+    if (!validDrawable(client, stuff->drawable, DixReadAccess | DixWriteAccess,

+		       &pDrawable, &status))

+	return status;

+

+    if (DRI2ThrottleClient(client, pDrawable))

+	return client->noClientException;

+

+    attachments = (unsigned int *) &stuff[1];

+    buffers = DRI2GetBuffers(pDrawable, &width, &height,

+			     attachments, stuff->count, &count);

+

+

+    send_buffers_reply(client, pDrawable, buffers, count, width, height);

+

+    return client->noClientException;

+}

+

+static int

+ProcDRI2GetBuffersWithFormat(ClientPtr client)

+{

+    REQUEST(xDRI2GetBuffersReq);

+    DrawablePtr pDrawable;

+    DRI2BufferPtr *buffers;

+    int status, width, height, count;

+    unsigned int *attachments;

+

+    REQUEST_FIXED_SIZE(xDRI2GetBuffersReq, stuff->count * (2 * 4));

+    if (!validDrawable(client, stuff->drawable, DixReadAccess | DixWriteAccess,

+		       &pDrawable, &status))

+	return status;

+

+    if (DRI2ThrottleClient(client, pDrawable))

+	return client->noClientException;

+

+    attachments = (unsigned int *) &stuff[1];

+    buffers = DRI2GetBuffersWithFormat(pDrawable, &width, &height,

+				       attachments, stuff->count, &count);

+

+    send_buffers_reply(client, pDrawable, buffers, count, width, height);

+

+    return client->noClientException;

+}

+

+static int

+ProcDRI2CopyRegion(ClientPtr client)

+{

+    REQUEST(xDRI2CopyRegionReq);

+    xDRI2CopyRegionReply rep;

+    DrawablePtr pDrawable;

+    int status;

+    RegionPtr pRegion;

+

+    REQUEST_SIZE_MATCH(xDRI2CopyRegionReq);

+

+    if (!validDrawable(client, stuff->drawable, DixWriteAccess,

+		       &pDrawable, &status))

+	return status;

+

+    VERIFY_REGION(pRegion, stuff->region, client, DixReadAccess);

+

+    status = DRI2CopyRegion(pDrawable, pRegion, stuff->dest, stuff->src);

+    if (status != Success)

+	return status;

+

+    /* CopyRegion needs to be a round trip to make sure the X server

+     * queues the swap buffer rendering commands before the DRI client

+     * continues rendering.  The reply has a bitmask to signal the

+     * presense of optional return values as well, but we're not using

+     * that yet.

+     */

+

+    rep.type = X_Reply;

+    rep.length = 0;

+    rep.sequenceNumber = client->sequence;

+

+    WriteToClient(client, sizeof(xDRI2CopyRegionReply), &rep);

+

+    return client->noClientException;

+}

+

+static void

+load_swap_reply(xDRI2SwapBuffersReply *rep, CARD64 sbc)

+{

+    rep->swap_hi = sbc >> 32;

+    rep->swap_lo = sbc & 0xffffffff;

+}

+

+static CARD64

+vals_to_card64(CARD32 lo, CARD32 hi)

+{

+    return (CARD64)hi << 32 | lo;

+}

+

+static void

+DRI2SwapEvent(ClientPtr client, void *data, int type, CARD64 ust, CARD64 msc,

+	      CARD64 sbc)

+{

+    xDRI2BufferSwapComplete event;

+    DrawablePtr pDrawable = data;

+

+    event.type = DRI2EventBase + DRI2_BufferSwapComplete;

+    event.sequenceNumber = client->sequence;

+    event.event_type = type;

+    event.drawable = pDrawable->id;

+    event.ust_hi = (CARD64)ust >> 32;

+    event.ust_lo = ust & 0xffffffff;

+    event.msc_hi = (CARD64)msc >> 32;

+    event.msc_lo = msc & 0xffffffff;

+    event.sbc_hi = (CARD64)sbc >> 32;

+    event.sbc_lo = sbc & 0xffffffff;

+

+    WriteEventsToClient(client, 1, (xEvent *)&event);

+}

+

+static int

+ProcDRI2SwapBuffers(ClientPtr client)

+{

+    REQUEST(xDRI2SwapBuffersReq);

+    xDRI2SwapBuffersReply rep;

+    DrawablePtr pDrawable;

+    CARD64 target_msc, divisor, remainder, swap_target;

+    int status;

+

+    REQUEST_SIZE_MATCH(xDRI2SwapBuffersReq);

+

+    if (!validDrawable(client, stuff->drawable,

+		       DixReadAccess | DixWriteAccess, &pDrawable, &status))

+	return status;

+

+    /*

+     * Ensures an out of control client can't exhaust our swap queue, and

+     * also orders swaps.

+     */

+    if (DRI2ThrottleClient(client, pDrawable))

+	return client->noClientException;

+

+    target_msc = vals_to_card64(stuff->target_msc_lo, stuff->target_msc_hi);

+    divisor = vals_to_card64(stuff->divisor_lo, stuff->divisor_hi);

+    remainder = vals_to_card64(stuff->remainder_lo, stuff->remainder_hi);

+

+    status = DRI2SwapBuffers(client, pDrawable, target_msc, divisor, remainder,

+			     &swap_target, DRI2SwapEvent, pDrawable);

+    if (status != Success)

+	return BadDrawable;

+

+    rep.type = X_Reply;

+    rep.length = 0;

+    rep.sequenceNumber = client->sequence;

+    load_swap_reply(&rep, swap_target);

+

+    WriteToClient(client, sizeof(xDRI2SwapBuffersReply), &rep);

+

+    return client->noClientException;

+}

+

+static void

+load_msc_reply(xDRI2MSCReply *rep, CARD64 ust, CARD64 msc, CARD64 sbc)

+{

+    rep->ust_hi = ust >> 32;

+    rep->ust_lo = ust & 0xffffffff;

+    rep->msc_hi = msc >> 32;

+    rep->msc_lo = msc & 0xffffffff;

+    rep->sbc_hi = sbc >> 32;

+    rep->sbc_lo = sbc & 0xffffffff;

+}

+

+static int

+ProcDRI2GetMSC(ClientPtr client)

+{

+    REQUEST(xDRI2GetMSCReq);

+    xDRI2MSCReply rep;

+    DrawablePtr pDrawable;

+    CARD64 ust, msc, sbc;

+    int status;

+

+    REQUEST_SIZE_MATCH(xDRI2GetMSCReq);

+

+    if (!validDrawable(client, stuff->drawable, DixReadAccess, &pDrawable,

+		       &status))

+	return status;

+

+    status = DRI2GetMSC(pDrawable, &ust, &msc, &sbc);

+    if (status != Success)

+	return status;

+

+    rep.type = X_Reply;

+    rep.length = 0;

+    rep.sequenceNumber = client->sequence;

+    load_msc_reply(&rep, ust, msc, sbc);

+

+    WriteToClient(client, sizeof(xDRI2MSCReply), &rep);

+

+    return client->noClientException;

+}

+

+static int

+ProcDRI2WaitMSC(ClientPtr client)

+{

+    REQUEST(xDRI2WaitMSCReq);

+    DrawablePtr pDrawable;

+    CARD64 target, divisor, remainder;

+    int status;

+

+    /* FIXME: in restart case, client may be gone at this point */

+

+    REQUEST_SIZE_MATCH(xDRI2WaitMSCReq);

+

+    if (!validDrawable(client, stuff->drawable, DixReadAccess, &pDrawable,

+		       &status))

+	return status;

+

+    target = vals_to_card64(stuff->target_msc_lo, stuff->target_msc_hi);

+    divisor = vals_to_card64(stuff->divisor_lo, stuff->divisor_hi);

+    remainder = vals_to_card64(stuff->remainder_lo, stuff->remainder_hi);

+

+    status = DRI2WaitMSC(client, pDrawable, target, divisor, remainder);

+    if (status != Success)

+	return status;

+

+    return client->noClientException;

+}

+

+int

+ProcDRI2WaitMSCReply(ClientPtr client, CARD64 ust, CARD64 msc, CARD64 sbc)

+{

+    xDRI2MSCReply rep;

+

+    rep.type = X_Reply;

+    rep.length = 0;

+    rep.sequenceNumber = client->sequence;

+    load_msc_reply(&rep, ust, msc, sbc);

+

+    WriteToClient(client, sizeof(xDRI2MSCReply), &rep);

+

+    return client->noClientException;

+}

+

+static int

+ProcDRI2SwapInterval(ClientPtr client)

+{

+    REQUEST(xDRI2SwapIntervalReq);

+    DrawablePtr pDrawable;

+    int status;

+

+    /* FIXME: in restart case, client may be gone at this point */

+

+    REQUEST_SIZE_MATCH(xDRI2SwapIntervalReq);

+

+    if (!validDrawable(client, stuff->drawable, DixReadAccess | DixWriteAccess,

+		       &pDrawable, &status))

+	return status;

+

+    DRI2SwapInterval(pDrawable, stuff->interval);

+

+    return client->noClientException;

+}

+

+static int

+ProcDRI2WaitSBC(ClientPtr client)

+{

+    REQUEST(xDRI2WaitSBCReq);

+    xDRI2MSCReply rep;

+    DrawablePtr pDrawable;

+    CARD64 target, ust, msc, sbc;

+    int status;

+

+    REQUEST_SIZE_MATCH(xDRI2WaitSBCReq);

+

+    if (!validDrawable(client, stuff->drawable, DixReadAccess, &pDrawable,

+		       &status))

+	return status;

+

+    target = vals_to_card64(stuff->target_sbc_lo, stuff->target_sbc_hi);

+    status = DRI2WaitSBC(client, pDrawable, target, &ust, &msc, &sbc);

+    if (status != Success)

+	return status;

+

+    rep.type = X_Reply;

+    rep.length = 0;

+    rep.sequenceNumber = client->sequence;

+    load_msc_reply(&rep, ust, msc, sbc);

+

+    WriteToClient(client, sizeof(xDRI2MSCReply), &rep);

+

+    return client->noClientException;

+}

+

+static int

+ProcDRI2Dispatch (ClientPtr client)

+{

+    REQUEST(xReq);

+    

+    switch (stuff->data) {

+    case X_DRI2QueryVersion:

+	return ProcDRI2QueryVersion(client);

+    }

+

+    if (!LocalClient(client))

+	return BadRequest;

+

+    switch (stuff->data) {

+    case X_DRI2Connect:

+	return ProcDRI2Connect(client);

+    case X_DRI2Authenticate:

+	return ProcDRI2Authenticate(client);

+    case X_DRI2CreateDrawable:

+	return ProcDRI2CreateDrawable(client);

+    case X_DRI2DestroyDrawable:

+	return ProcDRI2DestroyDrawable(client);

+    case X_DRI2GetBuffers:

+	return ProcDRI2GetBuffers(client);

+    case X_DRI2CopyRegion:

+	return ProcDRI2CopyRegion(client);

+    case X_DRI2GetBuffersWithFormat:

+	return ProcDRI2GetBuffersWithFormat(client);

+    case X_DRI2SwapBuffers:

+	return ProcDRI2SwapBuffers(client);

+    case X_DRI2GetMSC:

+	return ProcDRI2GetMSC(client);

+    case X_DRI2WaitMSC:

+	return ProcDRI2WaitMSC(client);

+    case X_DRI2WaitSBC:

+	return ProcDRI2WaitSBC(client);

+    case X_DRI2SwapInterval:

+	return ProcDRI2SwapInterval(client);

+    default:

+	return BadRequest;

+    }

+}

+

+static int

+SProcDRI2Connect(ClientPtr client)

+{

+    REQUEST(xDRI2ConnectReq);

+    xDRI2ConnectReply rep;

+    int n;

+

+    /* If the client is swapped, it's not local.  Talk to the hand. */

+

+    swaps(&stuff->length, n);

+    if (sizeof(*stuff) / 4 != client->req_len)

+	return BadLength;

+

+    rep.sequenceNumber = client->sequence;

+    swaps(&rep.sequenceNumber, n);

+    rep.length = 0;

+    rep.driverNameLength = 0;

+    rep.deviceNameLength = 0;

+

+    return client->noClientException;

+}

+

+static int

+SProcDRI2Dispatch (ClientPtr client)

+{

+    REQUEST(xReq);

+

+    /*

+     * Only local clients are allowed DRI access, but remote clients

+     * still need these requests to find out cleanly.

+     */

+    switch (stuff->data)

+    {

+    case X_DRI2QueryVersion:

+	return ProcDRI2QueryVersion(client);

+    case X_DRI2Connect:

+	return SProcDRI2Connect(client);

+    default:

+	return BadRequest;

+    }

+}

+

+int DRI2EventBase;

+

+static void

+DRI2ExtensionInit(void)

+{

+    dri2Extension = AddExtension(DRI2_NAME,

+				 DRI2NumberEvents,

+				 DRI2NumberErrors,

+				 ProcDRI2Dispatch,

+				 SProcDRI2Dispatch,

+				 NULL,

+				 StandardMinorOpcode);

+

+    DRI2EventBase = dri2Extension->eventBase;

+}

+

+extern Bool noDRI2Extension;

+

+_X_HIDDEN ExtensionModule dri2ExtensionModule = {

+    DRI2ExtensionInit,

+    DRI2_NAME,

+    &noDRI2Extension,

+    NULL,

+    NULL

+};