diff options
Diffstat (limited to 'src/dummy_dga.c')
| -rw-r--r-- | src/dummy_dga.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/src/dummy_dga.c b/src/dummy_dga.c new file mode 100644 index 0000000..5e35eda --- /dev/null +++ b/src/dummy_dga.c @@ -0,0 +1,174 @@ +#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; +} |