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/*
* Acceleration for the Creator and Creator3D framebuffer - DGA support.
*
* Copyright (C) 2000 David S. Miller (davem@redhat.com)
*
* 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, sublicense, 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
* DAVID MILLER 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.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "xf86.h"
#include "xf86_OSproc.h"
#include "dgaproc.h"
#include "ffb.h"
#include "ffb_regs.h"
#include "ffb_rcache.h"
#include "ffb_fifo.h"
#include "ffb_loops.h"
static Bool FFB_OpenFramebuffer(ScrnInfoPtr, char **, unsigned char **,
int *, int *, int *);
static void FFB_CloseFramebuffer(ScrnInfoPtr);
static Bool FFB_SetMode(ScrnInfoPtr, DGAModePtr);
static void FFB_SetViewport(ScrnInfoPtr, int, int, int);
static int FFB_GetViewport(ScrnInfoPtr);
static void FFB_Flush(ScrnInfoPtr);
static DGAFunctionRec FFB_DGAFuncs = {
FFB_OpenFramebuffer,
FFB_CloseFramebuffer,
FFB_SetMode,
FFB_SetViewport,
FFB_GetViewport,
FFB_Flush,
NULL, NULL,
NULL
};
void FFB_InitDGA(ScreenPtr pScreen)
{
ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
FFBPtr pFfb;
DGAModePtr mode;
Bool result;
pFfb = GET_FFB_FROM_SCRN(pScrn);
mode = XNFcallocarray(sizeof(DGAModeRec), 1);
if (!mode) {
xf86Msg(X_WARNING, "%s: DGA init failed, cannot alloc DGAMode.\n",
pFfb->psdp->device);
return;
}
mode->num = 0;
mode->mode = pScrn->modes;
/* Hmmm, what does concurrent access really mean? -DaveM */
mode->flags = (DGA_CONCURRENT_ACCESS | DGA_PIXMAP_AVAILABLE | DGA_FILL_RECT);
mode->flags |= DGA_BLIT_RECT;
mode->imageWidth = 2048;
mode->imageHeight = 2048;
mode->pixmapWidth = 2048;
mode->pixmapHeight = 2048;
/* XXX I would imagine that this value states how many bytes
* XXX you add to advance exactly one full horizontal line in
* XXX the framebuffer addressing, but the way we set the pScrn
* XXX mode values do not match that definition.
* XXX
* XXX Ask Jakub what is going on here. -DaveM
*/
#if 1
mode->bytesPerScanline = pScrn->modes->HDisplay * 4;
#else
mode->bytesPerScanline = (2048 * 4);
#endif
mode->byteOrder = pScrn->imageByteOrder;
mode->depth = 32;
mode->bitsPerPixel = 32;
mode->red_mask = 0xff;
mode->green_mask = 0xff00;
mode->blue_mask = 0xff0000;
mode->visualClass = TrueColor;
mode->viewportWidth = pScrn->modes->HDisplay;
mode->viewportHeight = pScrn->modes->VDisplay;
/* Do these values even matter if we do not support
* viewports? -DaveM
*/
mode->xViewportStep = 0;
mode->yViewportStep = 0;
mode->maxViewportX = 0;
mode->maxViewportY = 0;
mode->viewportFlags = 0;
mode->offset = 0;
result = DGAInit(pScreen, &FFB_DGAFuncs, mode, 1);
if (result == FALSE) {
xf86Msg(X_WARNING,
"%s: DGA init failed, DGAInit returns FALSE.\n",
pFfb->psdp->device);
} else {
xf86Msg(X_INFO, "%s: DGA support initialized.\n",
pFfb->psdp->device);
}
}
static Bool FFB_OpenFramebuffer(ScrnInfoPtr pScrn, char **name, unsigned char **mem,
int *size, int *offset, int *extra)
{
FFBPtr pFfb = GET_FFB_FROM_SCRN(pScrn);
*name = pFfb->psdp->device;
/* We give the user the dumb frame buffer. */
*mem = (unsigned char *)FFB_DFB24_VOFF;
*size = 0x1000000;
*offset = 0;
*extra = 0;
return TRUE;
}
static void FFB_CloseFramebuffer(ScrnInfoPtr pScrn)
{
}
static Bool FFB_SetMode(ScrnInfoPtr pScrn, DGAModePtr pMode)
{
/* Nothing to do, we currently only support one mode
* and we are always in it.
*/
return TRUE;
}
static void FFB_SetViewport(ScrnInfoPtr pScrn, int x, int y, int flags)
{
/* We don't support viewports, so... */
}
static int FFB_GetViewport(ScrnInfoPtr pScrn)
{
/* No viewports, none pending... */
return 0;
}
static void FFB_Flush(ScrnInfoPtr pScrn)
{
FFBPtr pFfb = GET_FFB_FROM_SCRN(pScrn);
ffb_fbcPtr ffb = pFfb->regs;
FFBWait(pFfb, ffb);
}
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