362 lines
8.7 KiB
C
362 lines
8.7 KiB
C
/*
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* Copyright © 2008 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Soft-
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* ware"), to deal in the Software without restriction, including without
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* limitation the rights to use, copy, modify, merge, publish, distribute,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, provided that the above copyright
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* notice(s) and this permission notice appear in all copies of the Soft-
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* ware and that both the above copyright notice(s) and this permission
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* notice appear in supporting documentation.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
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* ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
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* RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
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* THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
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* QUENTIAL 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 PERFOR-
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* MANCE OF THIS SOFTWARE.
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*
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* Except as contained in this notice, the name of a copyright holder shall
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* not be used in advertising or otherwise to promote the sale, use or
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* other dealings in this Software without prior written authorization of
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* the copyright holder.
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*
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* Authors:
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* Kristian Høgsberg (krh@redhat.com)
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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#define NEED_REPLIES
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#include <X11/X.h>
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#include <X11/Xproto.h>
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#include <X11/extensions/dri2proto.h>
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#include "dixstruct.h"
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#include "scrnintstr.h"
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#include "pixmapstr.h"
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#include "extnsionst.h"
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#include "xf86drm.h"
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#include "dri2.h"
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/* The only xf86 include */
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#include "xf86Module.h"
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static ExtensionEntry *dri2Extension;
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static RESTYPE dri2DrawableRes;
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static Bool
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validScreen(ClientPtr client, int screen, ScreenPtr *pScreen)
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{
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if (screen >= screenInfo.numScreens) {
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client->errorValue = screen;
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return FALSE;
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}
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*pScreen = screenInfo.screens[screen];
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return TRUE;
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}
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static Bool
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validDrawable(ClientPtr client, XID drawable,
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DrawablePtr *pDrawable, int *status)
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{
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*status = dixLookupDrawable(pDrawable, drawable, client, 0, DixReadAccess);
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if (*status != Success) {
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client->errorValue = drawable;
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return FALSE;
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}
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return TRUE;
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}
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static int
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ProcDRI2QueryVersion(ClientPtr client)
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{
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REQUEST(xDRI2QueryVersionReq);
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xDRI2QueryVersionReply rep;
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int n;
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if (client->swapped)
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swaps(&stuff->length, n);
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REQUEST_SIZE_MATCH(xDRI2QueryVersionReq);
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rep.type = X_Reply;
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rep.length = 0;
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rep.sequenceNumber = client->sequence;
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rep.majorVersion = DRI2_MAJOR;
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rep.minorVersion = DRI2_MINOR;
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if (client->swapped) {
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swaps(&rep.sequenceNumber, n);
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swapl(&rep.length, n);
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swapl(&rep.majorVersion, n);
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swapl(&rep.minorVersion, n);
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}
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WriteToClient(client, sizeof(xDRI2QueryVersionReply), &rep);
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return client->noClientException;
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}
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static int
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ProcDRI2Connect(ClientPtr client)
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{
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REQUEST(xDRI2ConnectReq);
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xDRI2ConnectReply rep;
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ScreenPtr pScreen;
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int fd;
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const char *driverName;
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char *busId = NULL;
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unsigned int sareaHandle;
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REQUEST_SIZE_MATCH(xDRI2ConnectReq);
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if (!validScreen(client, stuff->screen, &pScreen))
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return BadValue;
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rep.type = X_Reply;
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rep.length = 0;
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rep.sequenceNumber = client->sequence;
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rep.driverNameLength = 0;
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rep.busIdLength = 0;
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rep.sareaHandle = 0;
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if (!DRI2Connect(pScreen, &fd, &driverName, &sareaHandle))
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goto fail;
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busId = drmGetBusid(fd);
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if (busId == NULL)
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goto fail;
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rep.driverNameLength = strlen(driverName);
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rep.busIdLength = strlen(busId);
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rep.sareaHandle = sareaHandle;
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rep.length = (rep.driverNameLength + 3) / 4 + (rep.busIdLength + 3) / 4;
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fail:
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WriteToClient(client, sizeof(xDRI2ConnectReply), &rep);
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WriteToClient(client, rep.driverNameLength, driverName);
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WriteToClient(client, rep.busIdLength, busId);
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drmFreeBusid(busId);
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return client->noClientException;
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}
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static int
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ProcDRI2AuthConnection(ClientPtr client)
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{
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REQUEST(xDRI2AuthConnectionReq);
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xDRI2AuthConnectionReply rep;
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ScreenPtr pScreen;
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REQUEST_SIZE_MATCH(xDRI2AuthConnectionReq);
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if (!validScreen(client, stuff->screen, &pScreen))
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return BadValue;
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rep.type = X_Reply;
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rep.length = 0;
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rep.sequenceNumber = client->sequence;
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rep.authenticated = 1;
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if (!DRI2AuthConnection(pScreen, stuff->magic)) {
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ErrorF("DRI2: Failed to authenticate %lu\n",
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(unsigned long) stuff->magic);
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rep.authenticated = 0;
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}
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WriteToClient(client, sizeof(xDRI2AuthConnectionReply), &rep);
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return client->noClientException;
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}
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static int
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ProcDRI2CreateDrawable(ClientPtr client)
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{
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REQUEST(xDRI2CreateDrawableReq);
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xDRI2CreateDrawableReply rep;
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DrawablePtr pDrawable;
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unsigned int handle, head;
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int status;
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REQUEST_SIZE_MATCH(xDRI2CreateDrawableReq);
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if (!validDrawable(client, stuff->drawable, &pDrawable, &status))
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return status;
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if (!DRI2CreateDrawable(pDrawable, &handle, &head))
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return BadMatch;
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if (!AddResource(stuff->drawable, dri2DrawableRes, pDrawable)) {
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DRI2DestroyDrawable(pDrawable);
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return BadAlloc;
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}
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rep.type = X_Reply;
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rep.length = 0;
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rep.sequenceNumber = client->sequence;
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rep.handle = handle;
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rep.head = head;
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WriteToClient(client, sizeof(xDRI2CreateDrawableReply), &rep);
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return client->noClientException;
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}
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static int
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ProcDRI2DestroyDrawable(ClientPtr client)
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{
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REQUEST(xDRI2DestroyDrawableReq);
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DrawablePtr pDrawable;
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int status;
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REQUEST_SIZE_MATCH(xDRI2DestroyDrawableReq);
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if (!validDrawable(client, stuff->drawable, &pDrawable, &status))
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return status;
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FreeResourceByType(stuff->drawable, dri2DrawableRes, FALSE);
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return client->noClientException;
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}
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static int
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ProcDRI2ReemitDrawableInfo(ClientPtr client)
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{
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REQUEST(xDRI2ReemitDrawableInfoReq);
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xDRI2ReemitDrawableInfoReply rep;
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DrawablePtr pDrawable;
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unsigned int head;
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int status;
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REQUEST_SIZE_MATCH(xDRI2ReemitDrawableInfoReq);
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if (!validDrawable(client, stuff->drawable, &pDrawable, &status))
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return status;
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DRI2ReemitDrawableInfo(pDrawable, &head);
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rep.type = X_Reply;
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rep.length = 0;
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rep.sequenceNumber = client->sequence;
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rep.head = head;
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WriteToClient(client, sizeof(xDRI2ReemitDrawableInfoReply), &rep);
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return client->noClientException;
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}
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static int
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ProcDRI2Dispatch (ClientPtr client)
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{
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REQUEST(xReq);
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switch (stuff->data) {
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case X_DRI2QueryVersion:
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return ProcDRI2QueryVersion(client);
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}
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if (!LocalClient(client))
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return BadRequest;
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switch (stuff->data) {
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case X_DRI2Connect:
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return ProcDRI2Connect(client);
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case X_DRI2AuthConnection:
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return ProcDRI2AuthConnection(client);
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case X_DRI2CreateDrawable:
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return ProcDRI2CreateDrawable(client);
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case X_DRI2DestroyDrawable:
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return ProcDRI2DestroyDrawable(client);
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case X_DRI2ReemitDrawableInfo:
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return ProcDRI2ReemitDrawableInfo(client);
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default:
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return BadRequest;
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}
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}
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static int
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SProcDRI2Connect(ClientPtr client)
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{
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REQUEST(xDRI2ConnectReq);
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xDRI2ConnectReply rep;
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int n;
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/* If the client is swapped, it's not local. Talk to the hand. */
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swaps(&stuff->length, n);
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if (sizeof(*stuff) / 4 != client->req_len)
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return BadLength;
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rep.sequenceNumber = client->sequence;
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swaps(&rep.sequenceNumber, n);
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rep.length = 0;
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rep.driverNameLength = 0;
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rep.busIdLength = 0;
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rep.sareaHandle = 0;
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return client->noClientException;
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}
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static int
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SProcDRI2Dispatch (ClientPtr client)
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{
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REQUEST(xReq);
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/*
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* Only local clients are allowed DRI access, but remote clients
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* still need these requests to find out cleanly.
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*/
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switch (stuff->data)
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{
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case X_DRI2QueryVersion:
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return ProcDRI2QueryVersion(client);
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case X_DRI2Connect:
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return SProcDRI2Connect(client);
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default:
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return BadRequest;
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}
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}
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static void
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DRI2ResetProc (ExtensionEntry *extEntry)
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{
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}
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static int DRI2DrawableGone(pointer p, XID id)
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{
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DrawablePtr pDrawable = p;
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DRI2DestroyDrawable(pDrawable);
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return Success;
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}
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static void
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DRI2ExtensionInit(void)
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{
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dri2Extension = AddExtension(DRI2_NAME,
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DRI2NumberEvents,
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DRI2NumberErrors,
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ProcDRI2Dispatch,
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SProcDRI2Dispatch,
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DRI2ResetProc,
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StandardMinorOpcode);
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dri2DrawableRes = CreateNewResourceType(DRI2DrawableGone);
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}
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extern Bool noDRI2Extension;
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_X_HIDDEN ExtensionModule dri2ExtensionModule = {
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DRI2ExtensionInit,
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DRI2_NAME,
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&noDRI2Extension,
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NULL,
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NULL
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};
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