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/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/tdfx/tdfx_dga.c,v 1.5 2001/01/13 00:06:29 mvojkovi Exp $ */
#include "xf86.h"
#include "xf86_OSproc.h"
#include "xf86_ansic.h"
#include "dgaproc.h"
#include "tdfx.h"
#include "vgaHW.h"
static Bool TDFX_OpenFramebuffer(ScrnInfoPtr, char **, unsigned char **,
int *, int *, int *);
static Bool TDFX_SetMode(ScrnInfoPtr, DGAModePtr);
static int TDFX_GetViewport(ScrnInfoPtr);
static void TDFX_SetViewport(ScrnInfoPtr, int, int, int);
static void TDFX_FillRect(ScrnInfoPtr, int, int, int, int, unsigned long);
static void TDFX_BlitRect(ScrnInfoPtr, int, int, int, int, int, int);
static void TDFX_BlitTransRect(ScrnInfoPtr, int, int, int, int, int, int,
unsigned long);
static
DGAFunctionRec TDFX_DGAFuncs = {
TDFX_OpenFramebuffer,
0,
TDFX_SetMode,
TDFX_SetViewport,
TDFX_GetViewport,
TDFXSync,
TDFX_FillRect,
TDFX_BlitRect,
TDFX_BlitTransRect
};
Bool
TDFXDGAInit(ScreenPtr pScreen)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
TDFXPtr pTDFX;
DisplayModePtr pMode, firstMode;
DGAModePtr modes=0, newmodes=0, currentMode;
int num=0;
pTDFX = TDFXPTR(pScrn);
pMode = firstMode = pScrn->modes;
while (pMode) {
newmodes = xrealloc(modes, (num+1)*sizeof(DGAModeRec));
if (!newmodes) {
xfree(modes);
return FALSE;
}
modes = newmodes;
currentMode = modes+num;
num++;
currentMode->mode = pMode;
currentMode->flags = DGA_CONCURRENT_ACCESS | DGA_PIXMAP_AVAILABLE;
if (!pTDFX->NoAccel)
currentMode->flags |= DGA_FILL_RECT | DGA_BLIT_RECT;
if (pMode->Flags & V_DBLSCAN)
currentMode->flags |= DGA_DOUBLESCAN;
if (pMode->Flags & V_INTERLACE)
currentMode->flags |= DGA_INTERLACED;
currentMode->byteOrder = pScrn->imageByteOrder;
currentMode->depth = pScrn->depth;
currentMode->bitsPerPixel = pScrn->bitsPerPixel;
currentMode->red_mask = pScrn->mask.red;
currentMode->green_mask = pScrn->mask.green;
currentMode->blue_mask = pScrn->mask.blue;
currentMode->visualClass = pScrn->defaultVisual;
currentMode->viewportWidth = pMode->HDisplay;
currentMode->viewportHeight = pMode->VDisplay;
currentMode->xViewportStep = 1;
currentMode->yViewportStep = 1;
currentMode->viewportFlags = DGA_FLIP_RETRACE;
currentMode->offset = 0;
currentMode->address = pTDFX->FbBase;
currentMode->bytesPerScanline = ((pScrn->displayWidth*pTDFX->cpp)+3) & ~3L;
currentMode->imageWidth = pScrn->displayWidth;
currentMode->imageHeight = pTDFX->pixmapCacheLinesMax;
currentMode->pixmapWidth = currentMode->imageWidth;
currentMode->pixmapHeight = currentMode->imageHeight;
currentMode->maxViewportX = currentMode->imageWidth -
currentMode->viewportWidth;
/* this might need to get clamped to some maximum */
currentMode->maxViewportY = currentMode->imageHeight -
currentMode->viewportHeight;
pMode = pMode->next;
if (pMode == firstMode) break;
}
pTDFX->DGAModes = modes;
return DGAInit(pScreen, &TDFX_DGAFuncs, modes, num);
}
static Bool
TDFX_SetMode(ScrnInfoPtr pScrn, DGAModePtr pMode)
{
static DisplayModePtr OldModes[MAXSCREENS];
int index = pScrn->pScreen->myNum;
TDFXPtr pTDFX = TDFXPTR(pScrn);
if (!pMode) { /* restore the original mode */
/* put the ScreenParameters back */
if(pTDFX->DGAactive) {
TDFXSwitchMode(index, OldModes[index], 0);
TDFXAdjustFrame(pScrn->pScreen->myNum, 0, 0, 0);
pTDFX->DGAactive = FALSE;
}
} else {
if (!pTDFX->DGAactive) { /* save the old parameters */
OldModes[index] = pScrn->currentMode;
pTDFX->DGAactive = TRUE;
}
TDFXSwitchMode(index, pMode->mode, 0);
}
return TRUE;
}
static int
TDFX_GetViewport(ScrnInfoPtr pScrn)
{
TDFXPtr pTDFX = TDFXPTR(pScrn);
return pTDFX->DGAViewportStatus;
}
static void
TDFX_SetViewport(ScrnInfoPtr pScrn, int x, int y, int flags)
{
TDFXPtr pTDFX = TDFXPTR(pScrn);
vgaHWPtr hwp = VGAHWPTR(pScrn);
TDFXAdjustFrame(pScrn->pScreen->myNum, x, y, flags);
/* fixme */
while(hwp->readST01(hwp) & 0x08);
while(!(hwp->readST01(hwp) & 0x08));
pTDFX->DGAViewportStatus = 0;
}
static void
TDFX_FillRect(ScrnInfoPtr pScrn, int x, int y, int w, int h,
unsigned long color)
{
TDFXPtr pTDFX = TDFXPTR(pScrn);
if (pTDFX->AccelInfoRec) {
(*pTDFX->AccelInfoRec->SetupForSolidFill)(pScrn, color, GXcopy, ~0);
(*pTDFX->AccelInfoRec->SubsequentSolidFillRect)(pScrn, x, y, w, h);
}
}
static void
TDFX_BlitRect(ScrnInfoPtr pScrn, int srcx, int srcy, int w, int h,
int dstx, int dsty)
{
TDFXPtr pTDFX = TDFXPTR(pScrn);
if (pTDFX->AccelInfoRec) {
int xdir = ((srcx < dstx) && (srcy == dsty)) ? -1 : 1;
int ydir = (srcy < dsty) ? -1 : 1;
(*pTDFX->AccelInfoRec->SetupForScreenToScreenCopy)(pScrn, xdir, ydir, GXcopy, ~0, -1);
(*pTDFX->AccelInfoRec->SubsequentScreenToScreenCopy)(pScrn, srcx, srcy, dstx, dsty, w, h);
}
}
static void
TDFX_BlitTransRect(
ScrnInfoPtr pScrn,
int srcx, int srcy,
int w, int h,
int dstx, int dsty,
unsigned long color
){
/* this one should be separate since the XAA function would
prohibit usage of ~0 as the key */
}
static Bool
TDFX_OpenFramebuffer(
ScrnInfoPtr pScrn,
char **name,
unsigned char **mem,
int *size,
int *offset,
int *flags
){
TDFXPtr pTDFX = TDFXPTR(pScrn);
*name = NULL; /* no special device */
*mem = (unsigned char*)pTDFX->LinearAddr[0] + pTDFX->fbOffset;
*size = pTDFX->FbMapSize;
*offset = /* pTDFX->fbOffset */ 0 ; /* DGA is broken */
*flags = DGA_NEED_ROOT;
return TRUE;
}
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