Initial revisionXORG-STABLE

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;
+}