/* $XFree86: xc/lib/GL/dri/XF86dri.c,v 1.13 2002/10/30 12:51:25 alanh Exp $ */

/**************************************************************************

Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.

Copyright 2000 VA Linux Systems, Inc.

All Rights Reserved.

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

copy of this software and associated documentation files (the

"Software"), to deal in the Software without restriction, including

without limitation the rights to use, copy, modify, merge, publish,

distribute, sub license, and/or sell copies of the Software, and to

permit persons to whom the Software is furnished to do so, subject to

the following conditions:

The above copyright notice and this permission notice (including the

next paragraph) shall be included in all copies or substantial portions

of the Software.

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

OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.

IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR

ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

**************************************************************************/

/*

 * Authors:

 *   Kevin E. Martin <martin@valinux.com>

 *   Jens Owen <jens@tungstengraphics.com>

 *   Rickard E. (Rik) Faith <faith@valinux.com>

 *

 */

/* THIS IS NOT AN X CONSORTIUM STANDARD */

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <X11/Xlibint.h>

#include <X11/extensions/Xext.h>

#include <X11/extensions/extutil.h>

#include <stdint.h>

#include "xf86dristr.h"

static XExtensionInfo _xf86dri_info_data;

static XExtensionInfo *xf86dri_info = &_xf86dri_info_data;

static char xf86dri_extension_name[] = XF86DRINAME;

#define uniDRICheckExtension(dpy,i,val) \

  XextCheckExtension (dpy, i, xf86dri_extension_name, val)

/*****************************************************************************

 *                                                                           *

 *			   private utility routines                          *

 *                                                                           *

 *****************************************************************************/

static int close_display(Display * dpy, XExtCodes * extCodes);

static /* const */ XExtensionHooks xf86dri_extension_hooks = {

    NULL,			       /* create_gc */

    NULL,			       /* copy_gc */

    NULL,			       /* flush_gc */

    NULL,			       /* free_gc */

    NULL,			       /* create_font */

    NULL,			       /* free_font */

    close_display,		       /* close_display */

    NULL,			       /* wire_to_event */

    NULL,			       /* event_to_wire */

    NULL,			       /* error */

    NULL,			       /* error_string */

};

static

XEXT_GENERATE_FIND_DISPLAY(find_display, xf86dri_info,

    xf86dri_extension_name, &xf86dri_extension_hooks, 0, NULL)

    static XEXT_GENERATE_CLOSE_DISPLAY(close_display, xf86dri_info)

/*****************************************************************************

 *                                                                           *

 *		    public XFree86-DRI Extension routines                    *

 *                                                                           *

 *****************************************************************************/

#if 0

#include <stdio.h>

#define TRACE(msg)  fprintf(stderr,"uniDRI%s\n", msg);

#else

#define TRACE(msg)

#endif

    Bool uniDRIQueryExtension(dpy, event_basep, error_basep)

    Display *dpy;

    int *event_basep, *error_basep;

{

    XExtDisplayInfo *info = find_display(dpy);

    TRACE("QueryExtension...");

    if (XextHasExtension(info)) {

	*event_basep = info->codes->first_event;

	*error_basep = info->codes->first_error;

	TRACE("QueryExtension... return True");

	return True;

    } else {

	TRACE("QueryExtension... return False");

	return False;

    }

}

Bool

uniDRIQueryVersion(dpy, majorVersion, minorVersion, patchVersion)

    Display *dpy;

    int *majorVersion;

    int *minorVersion;

    int *patchVersion;

{

    XExtDisplayInfo *info = find_display(dpy);

    xXF86DRIQueryVersionReply rep;

    xXF86DRIQueryVersionReq *req;

    TRACE("QueryVersion...");

    uniDRICheckExtension(dpy, info, False);

    LockDisplay(dpy);

    GetReq(XF86DRIQueryVersion, req);

    req->reqType = info->codes->major_opcode;

    req->driReqType = X_XF86DRIQueryVersion;

    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {

	UnlockDisplay(dpy);

	SyncHandle();

	TRACE("QueryVersion... return False");

	return False;

    }

    *majorVersion = rep.majorVersion;

    *minorVersion = rep.minorVersion;

    *patchVersion = rep.patchVersion;

    UnlockDisplay(dpy);

    SyncHandle();

    TRACE("QueryVersion... return True");

    return True;

}

Bool

uniDRIQueryDirectRenderingCapable(dpy, screen, isCapable)

    Display *dpy;

    int screen;

    Bool *isCapable;

{

    XExtDisplayInfo *info = find_display(dpy);

    xXF86DRIQueryDirectRenderingCapableReply rep;

    xXF86DRIQueryDirectRenderingCapableReq *req;

    TRACE("QueryDirectRenderingCapable...");

    uniDRICheckExtension(dpy, info, False);

    LockDisplay(dpy);

    GetReq(XF86DRIQueryDirectRenderingCapable, req);

    req->reqType = info->codes->major_opcode;

    req->driReqType = X_XF86DRIQueryDirectRenderingCapable;

    req->screen = screen;

    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {

	UnlockDisplay(dpy);

	SyncHandle();

	TRACE("QueryDirectRenderingCapable... return False");

	return False;

    }

    *isCapable = rep.isCapable;

    UnlockDisplay(dpy);

    SyncHandle();

    TRACE("QueryDirectRenderingCapable... return True");

    return True;

}

Bool

uniDRIOpenConnection(dpy, screen, hSAREA, busIdString)

    Display *dpy;

    int screen;

    drm_handle_t *hSAREA;

    char **busIdString;

{

    XExtDisplayInfo *info = find_display(dpy);

    xXF86DRIOpenConnectionReply rep;

    xXF86DRIOpenConnectionReq *req;

    TRACE("OpenConnection...");

    uniDRICheckExtension(dpy, info, False);

    LockDisplay(dpy);

    GetReq(XF86DRIOpenConnection, req);

    req->reqType = info->codes->major_opcode;

    req->driReqType = X_XF86DRIOpenConnection;

    req->screen = screen;

    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {

	UnlockDisplay(dpy);

	SyncHandle();

	TRACE("OpenConnection... return False");

	return False;

    }

    *hSAREA = rep.hSAREALow;

#ifdef LONG64

    if (sizeof(drm_handle_t) == 8) {

	*hSAREA |= ((unsigned long)rep.hSAREAHigh) << 32;

    }

#endif

    if (rep.length) {

	if (!(*busIdString = (char *)Xcalloc(rep.busIdStringLength + 1, 1))) {

	    _XEatData(dpy, ((rep.busIdStringLength + 3) & ~3));

	    UnlockDisplay(dpy);

	    SyncHandle();

	    TRACE("OpenConnection... return False");

	    return False;

	}

	_XReadPad(dpy, *busIdString, rep.busIdStringLength);

    } else {

	*busIdString = NULL;

    }

    UnlockDisplay(dpy);

    SyncHandle();

    TRACE("OpenConnection... return True");

    return True;

}

Bool

uniDRIAuthConnection(dpy, screen, magic)

    Display *dpy;

    int screen;

    drm_magic_t magic;

{

    XExtDisplayInfo *info = find_display(dpy);

    xXF86DRIAuthConnectionReq *req;

    xXF86DRIAuthConnectionReply rep;

    TRACE("AuthConnection...");

    uniDRICheckExtension(dpy, info, False);

    LockDisplay(dpy);

    GetReq(XF86DRIAuthConnection, req);

    req->reqType = info->codes->major_opcode;

    req->driReqType = X_XF86DRIAuthConnection;

    req->screen = screen;

    req->magic = magic;

    rep.authenticated = 0;

    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse) || !rep.authenticated) {

	UnlockDisplay(dpy);

	SyncHandle();

	TRACE("AuthConnection... return False");

	return False;

    }

    UnlockDisplay(dpy);

    SyncHandle();

    TRACE("AuthConnection... return True");

    return True;

}

Bool

uniDRICloseConnection(dpy, screen)

    Display *dpy;

    int screen;

{

    XExtDisplayInfo *info = find_display(dpy);

    xXF86DRICloseConnectionReq *req;

    TRACE("CloseConnection...");

    uniDRICheckExtension(dpy, info, False);

    LockDisplay(dpy);

    GetReq(XF86DRICloseConnection, req);

    req->reqType = info->codes->major_opcode;

    req->driReqType = X_XF86DRICloseConnection;

    req->screen = screen;

    UnlockDisplay(dpy);

    SyncHandle();

    TRACE("CloseConnection... return True");

    return True;

}

Bool

uniDRIGetClientDriverName(dpy, screen, ddxDriverMajorVersion,

    ddxDriverMinorVersion, ddxDriverPatchVersion, clientDriverName)

    Display *dpy;

    int screen;

    int *ddxDriverMajorVersion;

    int *ddxDriverMinorVersion;

    int *ddxDriverPatchVersion;

    char **clientDriverName;

{

    XExtDisplayInfo *info = find_display(dpy);

    xXF86DRIGetClientDriverNameReply rep;

    xXF86DRIGetClientDriverNameReq *req;

    TRACE("GetClientDriverName...");

    uniDRICheckExtension(dpy, info, False);

    LockDisplay(dpy);

    GetReq(XF86DRIGetClientDriverName, req);

    req->reqType = info->codes->major_opcode;

    req->driReqType = X_XF86DRIGetClientDriverName;

    req->screen = screen;

    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {

	UnlockDisplay(dpy);

	SyncHandle();

	TRACE("GetClientDriverName... return False");

	return False;

    }

    *ddxDriverMajorVersion = rep.ddxDriverMajorVersion;

    *ddxDriverMinorVersion = rep.ddxDriverMinorVersion;

    *ddxDriverPatchVersion = rep.ddxDriverPatchVersion;

    if (rep.length) {

	if (!(*clientDriverName =

		(char *)Xcalloc(rep.clientDriverNameLength + 1, 1))) {

	    _XEatData(dpy, ((rep.clientDriverNameLength + 3) & ~3));

	    UnlockDisplay(dpy);

	    SyncHandle();

	    TRACE("GetClientDriverName... return False");

	    return False;

	}

	_XReadPad(dpy, *clientDriverName, rep.clientDriverNameLength);

    } else {

	*clientDriverName = NULL;

    }

    UnlockDisplay(dpy);

    SyncHandle();

    TRACE("GetClientDriverName... return True");

    return True;

}

Bool

uniDRICreateContextWithConfig(dpy, screen, configID, context, hHWContext)

    Display *dpy;

    int screen;

    int configID;

    XID *context;

    drm_context_t *hHWContext;

{

    XExtDisplayInfo *info = find_display(dpy);

    xXF86DRICreateContextReply rep;

    xXF86DRICreateContextReq *req;

    TRACE("CreateContext...");

    uniDRICheckExtension(dpy, info, False);

    LockDisplay(dpy);

    GetReq(XF86DRICreateContext, req);

    req->reqType = info->codes->major_opcode;

    req->driReqType = X_XF86DRICreateContext;

    req->visual = configID;

    req->screen = screen;

    *context = XAllocID(dpy);

    req->context = *context;

    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {

	UnlockDisplay(dpy);

	SyncHandle();

	TRACE("CreateContext... return False");

	return False;

    }

    *hHWContext = rep.hHWContext;

    UnlockDisplay(dpy);

    SyncHandle();

    TRACE("CreateContext... return True");

    return True;

}

Bool

uniDRICreateContext(dpy, screen, visual, context, hHWContext)

    Display *dpy;

    int screen;

    Visual *visual;

    XID *context;

    drm_context_t *hHWContext;

{

    return uniDRICreateContextWithConfig(dpy, screen, visual->visualid,

	context, hHWContext);

}

Bool

uniDRIDestroyContext(Display * ndpy, int screen, XID context)

{

    Display *const dpy = (Display *) ndpy;

    XExtDisplayInfo *info = find_display(dpy);

    xXF86DRIDestroyContextReq *req;

    TRACE("DestroyContext...");

    uniDRICheckExtension(dpy, info, False);

    LockDisplay(dpy);

    GetReq(XF86DRIDestroyContext, req);

    req->reqType = info->codes->major_opcode;

    req->driReqType = X_XF86DRIDestroyContext;

    req->screen = screen;

    req->context = context;

    UnlockDisplay(dpy);

    SyncHandle();

    TRACE("DestroyContext... return True");

    return True;

}

Bool

uniDRICreateDrawable(Display * ndpy, int screen,

    Drawable drawable, drm_drawable_t * hHWDrawable)

{

    Display *const dpy = (Display *) ndpy;

    XExtDisplayInfo *info = find_display(dpy);

    xXF86DRICreateDrawableReply rep;

    xXF86DRICreateDrawableReq *req;

    TRACE("CreateDrawable...");

    uniDRICheckExtension(dpy, info, False);

    LockDisplay(dpy);

    GetReq(XF86DRICreateDrawable, req);

    req->reqType = info->codes->major_opcode;

    req->driReqType = X_XF86DRICreateDrawable;

    req->screen = screen;

    req->drawable = drawable;

    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {

	UnlockDisplay(dpy);

	SyncHandle();

	TRACE("CreateDrawable... return False");

	return False;

    }

    *hHWDrawable = rep.hHWDrawable;

    UnlockDisplay(dpy);

    SyncHandle();

    TRACE("CreateDrawable... return True");

    return True;

}

Bool

uniDRIDestroyDrawable(Display * ndpy, int screen, Drawable drawable)

{

    Display *const dpy = (Display *) ndpy;

    XExtDisplayInfo *info = find_display(dpy);

    xXF86DRIDestroyDrawableReq *req;

    TRACE("DestroyDrawable...");

    uniDRICheckExtension(dpy, info, False);

    LockDisplay(dpy);

    GetReq(XF86DRIDestroyDrawable, req);

    req->reqType = info->codes->major_opcode;

    req->driReqType = X_XF86DRIDestroyDrawable;

    req->screen = screen;

    req->drawable = drawable;

    UnlockDisplay(dpy);

    SyncHandle();

    TRACE("DestroyDrawable... return True");

    return True;

}

Bool

uniDRIGetDrawableInfo(Display * dpy, int screen, Drawable drawable,

    unsigned int *index, unsigned int *stamp,

    int *X, int *Y, int *W, int *H,

    int *numClipRects, drm_clip_rect_t ** pClipRects,

    int *backX, int *backY,

    int *numBackClipRects, drm_clip_rect_t ** pBackClipRects)

{

    XExtDisplayInfo *info = find_display(dpy);

    xXF86DRIGetDrawableInfoReply rep;

    xXF86DRIGetDrawableInfoReq *req;

    int total_rects;

    TRACE("GetDrawableInfo...");

    uniDRICheckExtension(dpy, info, False);

    LockDisplay(dpy);

    GetReq(XF86DRIGetDrawableInfo, req);

    req->reqType = info->codes->major_opcode;

    req->driReqType = X_XF86DRIGetDrawableInfo;

    req->screen = screen;

    req->drawable = drawable;

    if (!_XReply(dpy, (xReply *) & rep, 1, xFalse)) {

	UnlockDisplay(dpy);

	SyncHandle();

	TRACE("GetDrawableInfo... return False");

	return False;

    }

    *index = rep.drawableTableIndex;

    *stamp = rep.drawableTableStamp;

    *X = (int)rep.drawableX;

    *Y = (int)rep.drawableY;

    *W = (int)rep.drawableWidth;

    *H = (int)rep.drawableHeight;

    *numClipRects = rep.numClipRects;

    total_rects = *numClipRects;

    *backX = rep.backX;

    *backY = rep.backY;

    *numBackClipRects = rep.numBackClipRects;

    total_rects += *numBackClipRects;

#if 0

    /* Because of the fix in Xserver/GL/dri/xf86dri.c, this check breaks

     * backwards compatibility (Because of the >> 2 shift) but the fix

     * enables multi-threaded apps to work.

     */

    if (rep.length != ((((SIZEOF(xXF86DRIGetDrawableInfoReply) -

			SIZEOF(xGenericReply) +

			total_rects * sizeof(drm_clip_rect_t)) +

		    3) & ~3) >> 2)) {

	_XEatData(dpy, rep.length);

	UnlockDisplay(dpy);

	SyncHandle();

	TRACE("GetDrawableInfo... return False");

	return False;

    }

#endif

    if (*numClipRects) {

	int len = sizeof(drm_clip_rect_t) * (*numClipRects);

	*pClipRects = (drm_clip_rect_t *) Xcalloc(len, 1);

	if (*pClipRects)

	    _XRead(dpy, (char *)*pClipRects, len);

    } else {

	*pClipRects = NULL;

    }

    if (*numBackClipRects) {

	int len = sizeof(drm_clip_rect_t) * (*numBackClipRects);

	*pBackClipRects = (drm_clip_rect_t *) Xcalloc(len, 1);

	if (*pBackClipRects)

	    _XRead(dpy, (char *)*pBackClipRects, len);

    } else {

	*pBackClipRects = NULL;

    }

    UnlockDisplay(dpy);

    SyncHandle();

    TRACE("GetDrawableInfo... return True");

    return True;

}

Bool

uniDRIGetDeviceInfo(dpy, screen, hFrameBuffer,

    fbOrigin, fbSize, fbStride, devPrivateSize, pDevPrivate)

    Display *dpy;

    int screen;

    drm_handle_t *hFrameBuffer;

    int *fbOrigin;

    int *fbSize;

    int *fbStride;

    int *devPrivateSize;

    void **pDevPrivate;

{

    XExtDisplayInfo *info = find_display(dpy);

    xXF86DRIGetDeviceInfoReply rep;

    xXF86DRIGetDeviceInfoReq *req;

    TRACE("GetDeviceInfo...");

    uniDRICheckExtension(dpy, info, False);

    LockDisplay(dpy);

    GetReq(XF86DRIGetDeviceInfo, req);

    req->reqType = info->codes->major_opcode;

    req->driReqType = X_XF86DRIGetDeviceInfo;

    req->screen = screen;

    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {

	UnlockDisplay(dpy);

	SyncHandle();

	TRACE("GetDeviceInfo... return False");

	return False;

    }

    *hFrameBuffer = rep.hFrameBufferLow;

#ifdef LONG64

    if (sizeof(drm_handle_t) == 8) {

	*hFrameBuffer |= ((unsigned long)rep.hFrameBufferHigh) << 32;

    }

#endif

    *fbOrigin = rep.framebufferOrigin;

    *fbSize = rep.framebufferSize;

    *fbStride = rep.framebufferStride;

    *devPrivateSize = rep.devPrivateSize;

    if (rep.length) {

	if (!(*pDevPrivate = (void *)Xcalloc(rep.devPrivateSize, 1))) {

	    _XEatData(dpy, ((rep.devPrivateSize + 3) & ~3));

	    UnlockDisplay(dpy);

	    SyncHandle();

	    TRACE("GetDeviceInfo... return False");

	    return False;

	}

	_XRead(dpy, (char *)*pDevPrivate, rep.devPrivateSize);

    } else {

	*pDevPrivate = NULL;

    }

    UnlockDisplay(dpy);

    SyncHandle();

    TRACE("GetDeviceInfo... return True");

    return True;

}