Implement DRI2 direct rendering and update AIGLX to DRI interface changes.

Get rid of glcontextmodes.[ch] from build, rename __GlcontextModes to
__GLXcontext.  Drop all #includes of glcontextmodes.h and glcore.h.
Drop the DRI context modes extension.

Add protocol code to DRI2 module and load DRI2 extension by default.

hw/xfree86/dri2/dri2ext.c

@@ -0,0 +1,361 @@
+/*
+ * 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
+
+#define NEED_REPLIES
+#include <X11/X.h>
+#include <X11/Xproto.h>
+#include "dixstruct.h"
+#include "scrnintstr.h"
+#include "pixmapstr.h"
+#include "extnsionst.h"
+#include "xf86drm.h"
+#include "dri2proto.h"
+#include "dri2.h"
+
+/* The only xf86 include */
+#include "xf86Module.h"
+
+static ExtensionEntry	*dri2Extension;
+static RESTYPE		 dri2DrawableRes;
+
+static Bool
+validScreen(ClientPtr client, int screen, ScreenPtr *pScreen)
+{
+    if (screen >= screenInfo.numScreens) {
+	client->errorValue = screen;
+	return FALSE;
+    }
+
+    *pScreen = screenInfo.screens[screen];
+
+    return TRUE;
+}
+
+static Bool
+validDrawable(ClientPtr client, XID drawable,
+	      DrawablePtr *pDrawable, int *status)
+{
+    *status = dixLookupDrawable(pDrawable, drawable, client, 0, DixReadAccess);
+    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;
+    ScreenPtr pScreen;
+    int fd;
+    const char *driverName;
+    char *busId;
+    unsigned int sareaHandle;
+
+    REQUEST_SIZE_MATCH(xDRI2ConnectReq);
+    if (!validScreen(client, stuff->screen, &pScreen))
+	return BadValue;
+    
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+    rep.driverNameLength = 0;
+    rep.busIdLength = 0;
+    rep.sareaHandle = 0;
+
+    if (!DRI2Connect(pScreen, &fd, &driverName, &sareaHandle))
+	goto fail;
+
+    busId = drmGetBusid(fd);
+    if (busId == NULL)
+	goto fail;
+
+    rep.driverNameLength = strlen(driverName);
+    rep.busIdLength = strlen(busId);
+    rep.sareaHandle = sareaHandle;
+    rep.length = (rep.driverNameLength + 3) / 4 + (rep.busIdLength + 3) / 4;
+
+ fail:
+    WriteToClient(client, sizeof(xDRI2ConnectReply), &rep);
+    WriteToClient(client, rep.driverNameLength, driverName);
+    WriteToClient(client, rep.busIdLength, busId);
+    drmFreeBusid(busId);
+
+    return client->noClientException;
+}
+
+static int
+ProcDRI2AuthConnection(ClientPtr client)
+{
+    REQUEST(xDRI2AuthConnectionReq);
+    xDRI2AuthConnectionReply rep;
+    ScreenPtr pScreen;
+
+    REQUEST_SIZE_MATCH(xDRI2AuthConnectionReq);
+    if (!validScreen(client, stuff->screen, &pScreen))
+	return BadValue;
+
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+    rep.authenticated = 1;
+
+    if (!DRI2AuthConnection(pScreen, stuff->magic)) {
+        ErrorF("DRI2: Failed to authenticate %lu\n",
+	       (unsigned long) stuff->magic);
+	rep.authenticated = 0;
+    }
+
+    WriteToClient(client, sizeof(xDRI2AuthConnectionReply), &rep);
+
+    return client->noClientException;
+}
+
+static int
+ProcDRI2CreateDrawable(ClientPtr client)
+{
+    REQUEST(xDRI2CreateDrawableReq);
+    xDRI2CreateDrawableReply rep;
+    DrawablePtr pDrawable;
+    unsigned int handle, head;
+    int status;
+
+    REQUEST_SIZE_MATCH(xDRI2CreateDrawableReq);
+
+    if (!validDrawable(client, stuff->drawable, &pDrawable, &status))
+	return status;
+
+    if (!DRI2CreateDrawable(pDrawable, &handle, &head))
+	return BadMatch;
+
+    if (!AddResource(stuff->drawable, dri2DrawableRes, pDrawable)) {
+	DRI2DestroyDrawable(pDrawable);
+	return BadAlloc;
+    }
+
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+    rep.handle = handle;
+    rep.head = head;
+
+    WriteToClient(client, sizeof(xDRI2CreateDrawableReply), &rep);
+
+    return client->noClientException;
+}
+
+static int
+ProcDRI2DestroyDrawable(ClientPtr client)
+{
+    REQUEST(xDRI2DestroyDrawableReq);
+    DrawablePtr pDrawable;
+    int status;
+
+    REQUEST_SIZE_MATCH(xDRI2DestroyDrawableReq);
+    if (!validDrawable(client, stuff->drawable, &pDrawable, &status))
+	return status;
+
+    FreeResourceByType(stuff->drawable, dri2DrawableRes, FALSE);
+
+    return client->noClientException;
+}
+
+static int
+ProcDRI2ReemitDrawableInfo(ClientPtr client)
+{
+    REQUEST(xDRI2ReemitDrawableInfoReq);
+    xDRI2ReemitDrawableInfoReply rep;
+    DrawablePtr pDrawable;
+    unsigned int head;
+    int status;
+
+    REQUEST_SIZE_MATCH(xDRI2ReemitDrawableInfoReq);
+    if (!validDrawable(client, stuff->drawable, &pDrawable, &status))
+	return status;
+
+    DRI2ReemitDrawableInfo(pDrawable, &head);
+
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+    rep.head = head;
+
+    WriteToClient(client, sizeof(xDRI2ReemitDrawableInfoReply), &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_DRI2AuthConnection:
+	return ProcDRI2AuthConnection(client);
+    case X_DRI2CreateDrawable:
+	return ProcDRI2CreateDrawable(client);
+    case X_DRI2DestroyDrawable:
+	return ProcDRI2DestroyDrawable(client);
+    case X_DRI2ReemitDrawableInfo:
+	return ProcDRI2ReemitDrawableInfo(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.busIdLength = 0;
+    rep.sareaHandle = 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;
+    }
+}
+
+static void
+DRI2ResetProc (ExtensionEntry *extEntry)
+{
+}
+
+static int DRI2DrawableGone(pointer p, XID id)
+{
+    DrawablePtr pDrawable = p;
+
+    DRI2DestroyDrawable(pDrawable);
+
+    return Success;
+}
+
+static void
+DRI2ExtensionInit(void)
+{
+    dri2Extension = AddExtension(DRI2_NAME,
+				 DRI2NumberEvents,
+				 DRI2NumberErrors,
+				 ProcDRI2Dispatch,
+				 SProcDRI2Dispatch,
+				 DRI2ResetProc,
+				 StandardMinorOpcode);
+
+    dri2DrawableRes = CreateNewResourceType(DRI2DrawableGone);
+}
+
+extern Bool noDRI2Extension;
+
+_X_HIDDEN ExtensionModule dri2ExtensionModule = {
+    DRI2ExtensionInit,
+    DRI2_NAME,
+    &noDRI2Extension,
+    NULL,
+    NULL
+};