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#include "xf86.h"
#include "xf86_OSproc.h"
#include "xf86_ansic.h"
#include "xf86Pci.h"
#include "xf86PciInfo.h"
#include "dgaproc.h"
#include "dummy.h"
static Bool DUMMY_OpenFramebuffer(ScrnInfoPtr, char **, unsigned char **,
int *, int *, int *);
static Bool DUMMY_SetMode(ScrnInfoPtr, DGAModePtr);
static int DUMMY_GetViewport(ScrnInfoPtr);
static void DUMMY_SetViewport(ScrnInfoPtr, int, int, int);
static
DGAFunctionRec DUMMYDGAFuncs = {
DUMMY_OpenFramebuffer,
NULL,
DUMMY_SetMode,
DUMMY_SetViewport,
DUMMY_GetViewport,
NULL,
NULL,
NULL,
#if 0
DUMMY_BlitTransRect
#else
NULL
#endif
};
Bool
DUMMYDGAInit(ScreenPtr pScreen)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
DUMMYPtr pDUMMY = DUMMYPTR(pScrn);
DGAModePtr modes = NULL, newmodes = NULL, currentMode;
DisplayModePtr pMode, firstMode;
int Bpp = pScrn->bitsPerPixel >> 3;
int num = 0, imlines, pixlines;
imlines = (pScrn->videoRam * 1024) /
(pScrn->displayWidth * (pScrn->bitsPerPixel >> 3));
pixlines = imlines;
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(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 = (Bpp == 1) ? PseudoColor : TrueColor;
currentMode->viewportWidth = pMode->HDisplay;
currentMode->viewportHeight = pMode->VDisplay;
currentMode->xViewportStep = 1;
currentMode->yViewportStep = 1;
currentMode->viewportFlags = DGA_FLIP_RETRACE;
currentMode->offset = 0;
currentMode->address = (unsigned char *)pDUMMY->FBBase;
currentMode->bytesPerScanline =
((pScrn->displayWidth * Bpp) + 3) & ~3L;
currentMode->imageWidth = pScrn->displayWidth;
currentMode->imageHeight = imlines;
currentMode->pixmapWidth = currentMode->imageWidth;
currentMode->pixmapHeight = pixlines;
currentMode->maxViewportX = currentMode->imageWidth -
currentMode->viewportWidth;
currentMode->maxViewportY = currentMode->imageHeight -
currentMode->viewportHeight;
pMode = pMode->next;
if(pMode == firstMode)
break;
}
pDUMMY->numDGAModes = num;
pDUMMY->DGAModes = modes;
return DGAInit(pScreen, &DUMMYDGAFuncs, modes, num);
}
static DisplayModePtr DUMMYSavedDGAModes[MAXSCREENS];
static Bool
DUMMY_SetMode(
ScrnInfoPtr pScrn,
DGAModePtr pMode
){
int index = pScrn->pScreen->myNum;
DUMMYPtr pDUMMY = DUMMYPTR(pScrn);
if(!pMode) { /* restore the original mode */
if(pDUMMY->DGAactive) {
pScrn->currentMode = DUMMYSavedDGAModes[index];
DUMMYSwitchMode(index, pScrn->currentMode, 0);
DUMMYAdjustFrame(index, 0, 0, 0);
pDUMMY->DGAactive = FALSE;
}
} else {
if(!pDUMMY->DGAactive) { /* save the old parameters */
DUMMYSavedDGAModes[index] = pScrn->currentMode;
pDUMMY->DGAactive = TRUE;
}
DUMMYSwitchMode(index, pMode->mode, 0);
}
return TRUE;
}
static int
DUMMY_GetViewport(
ScrnInfoPtr pScrn
){
DUMMYPtr pDUMMY = DUMMYPTR(pScrn);
return pDUMMY->DGAViewportStatus;
}
static void
DUMMY_SetViewport(
ScrnInfoPtr pScrn,
int x, int y,
int flags
){
DUMMYPtr pDUMMY = DUMMYPTR(pScrn);
DUMMYAdjustFrame(pScrn->pScreen->myNum, x, y, flags);
pDUMMY->DGAViewportStatus = 0;
}
static Bool
DUMMY_OpenFramebuffer(
ScrnInfoPtr pScrn,
char **name,
unsigned char **mem,
int *size,
int *offset,
int *flags
){
DUMMYPtr pDUMMY = DUMMYPTR(pScrn);
*name = NULL; /* no special device */
*mem = (unsigned char*)pDUMMY->FBBase;
*size = pScrn->videoRam * 1024;
*offset = 0;
*flags = DGA_NEED_ROOT;
return TRUE;
}
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