Initial revision

1 files changed, 397 insertions, 0 deletions

diff --git a/src/r128_dga.c b/src/r128_dga.c
new file mode 100644
index 0000000..6c0013a
--- /dev/null
+++ b/src/r128_dga.c
@@ -0,0 +1,397 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/ati/r128_dga.c,v 1.9 2002/10/30 12:52:12 alanh Exp $ */
+/*
+ * Authors:
+ *   Ove Kåven <ovek@transgaming.com>,
+ *    borrowing some code from the Chips and MGA drivers.
+ */
+
+				/* Driver data structures */
+#include "r128.h"
+#include "r128_probe.h"
+
+				/* X and server generic header files */
+#include "xf86.h"
+
+				/* DGA support */
+#include "dgaproc.h"
+
+#ifdef XF86DRI
+#include "r128_common.h"
+#endif
+
+static Bool R128_OpenFramebuffer(ScrnInfoPtr, char **, unsigned char **,
+					int *, int *, int *);
+static Bool R128_SetMode(ScrnInfoPtr, DGAModePtr);
+static int  R128_GetViewport(ScrnInfoPtr);
+static void R128_SetViewport(ScrnInfoPtr, int, int, int);
+static void R128_FillRect(ScrnInfoPtr, int, int, int, int, unsigned long);
+static void R128_BlitRect(ScrnInfoPtr, int, int, int, int, int, int);
+static void R128_BlitTransRect(ScrnInfoPtr, int, int, int, int, int, int,
+			       unsigned long);
+
+static DGAModePtr R128SetupDGAMode(ScrnInfoPtr pScrn,
+				     DGAModePtr modes,
+				     int *num,
+				     int bitsPerPixel,
+				     int depth,
+				     Bool pixmap,
+				     int secondPitch,
+				     unsigned long red,
+				     unsigned long green,
+				     unsigned long blue,
+				     short visualClass)
+{
+    R128InfoPtr   info     = R128PTR(pScrn);
+    DGAModePtr      newmodes = NULL;
+    DGAModePtr      currentMode;
+    DisplayModePtr  pMode;
+    DisplayModePtr  firstMode;
+    unsigned int    size;
+    int             pitch;
+    int             Bpp      = bitsPerPixel >> 3;
+
+SECOND_PASS:
+
+    pMode = firstMode = pScrn->modes;
+
+    while (1) {
+	pitch = pScrn->displayWidth;
+	size = pitch * Bpp * pMode->VDisplay;
+
+	if ((!secondPitch || (pitch != secondPitch)) &&
+	    (size <= info->FbMapSize)) {
+
+	    if (secondPitch)
+		pitch = secondPitch;
+
+	    if (!(newmodes = xrealloc(modes, (*num + 1) * sizeof(DGAModeRec))))
+	        break;
+
+	    modes       = newmodes;
+	    currentMode = modes + *num;
+
+	    currentMode->mode           = pMode;
+	    currentMode->flags          = DGA_CONCURRENT_ACCESS;
+
+	    if (pixmap)
+	        currentMode->flags     |= DGA_PIXMAP_AVAILABLE;
+
+	    if (info->accel) {
+	      if (info->accel->SetupForSolidFill &&
+		  info->accel->SubsequentSolidFillRect)
+		 currentMode->flags    |= DGA_FILL_RECT;
+	      if (info->accel->SetupForScreenToScreenCopy &&
+		  info->accel->SubsequentScreenToScreenCopy)
+		 currentMode->flags    |= DGA_BLIT_RECT | DGA_BLIT_RECT_TRANS;
+	      if (currentMode->flags &
+		  (DGA_PIXMAP_AVAILABLE | DGA_FILL_RECT |
+		   DGA_BLIT_RECT | DGA_BLIT_RECT_TRANS))
+		  currentMode->flags   &= ~DGA_CONCURRENT_ACCESS;
+	    }
+	    if (pMode->Flags & V_DBLSCAN)
+		currentMode->flags     |= DGA_DOUBLESCAN;
+	    if (pMode->Flags & V_INTERLACE)
+	        currentMode->flags     |= DGA_INTERLACED;
+
+	    currentMode->byteOrder      = pScrn->imageByteOrder;
+	    currentMode->depth          = depth;
+	    currentMode->bitsPerPixel   = bitsPerPixel;
+	    currentMode->red_mask       = red;
+	    currentMode->green_mask     = green;
+	    currentMode->blue_mask      = blue;
+	    currentMode->visualClass    = visualClass;
+	    currentMode->viewportWidth  = pMode->HDisplay;
+	    currentMode->viewportHeight = pMode->VDisplay;
+	    currentMode->xViewportStep  = 8;
+	    currentMode->yViewportStep  = 1;
+	    currentMode->viewportFlags  = DGA_FLIP_RETRACE;
+	    currentMode->offset         = 0;
+	    currentMode->address        = (unsigned char*)info->LinearAddr;
+	    currentMode->bytesPerScanline = pitch * Bpp;
+	    currentMode->imageWidth     = pitch;
+	    currentMode->imageHeight    = (info->FbMapSize
+					   / currentMode->bytesPerScanline);
+	    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);
+	    (*num)++;
+	}
+
+	pMode = pMode->next;
+	if (pMode == firstMode)
+	    break;
+    }
+
+    if (secondPitch) {
+	secondPitch = 0;
+	goto SECOND_PASS;
+    }
+
+    return modes;
+}
+
+Bool
+R128DGAInit(ScreenPtr pScreen)
+{
+   ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
+   R128InfoPtr info = R128PTR(pScrn);
+   DGAModePtr modes = NULL;
+   int num = 0;
+
+   /* 8 */
+   modes = R128SetupDGAMode (pScrn, modes, &num, 8, 8,
+		(pScrn->bitsPerPixel == 8),
+		(pScrn->bitsPerPixel != 8) ? 0 : pScrn->displayWidth,
+		0, 0, 0, PseudoColor);
+
+   /* 15 */
+   modes = R128SetupDGAMode (pScrn, modes, &num, 16, 15,
+		(pScrn->bitsPerPixel == 16),
+		(pScrn->depth != 15) ? 0 : pScrn->displayWidth,
+		0x7c00, 0x03e0, 0x001f, TrueColor);
+
+   modes = R128SetupDGAMode (pScrn, modes, &num, 16, 15,
+		(pScrn->bitsPerPixel == 16),
+		(pScrn->depth != 15) ? 0 : pScrn->displayWidth,
+		0x7c00, 0x03e0, 0x001f, DirectColor);
+
+   /* 16 */
+   modes = R128SetupDGAMode (pScrn, modes, &num, 16, 16,
+		(pScrn->bitsPerPixel == 16),
+		(pScrn->depth != 16) ? 0 : pScrn->displayWidth,
+		0xf800, 0x07e0, 0x001f, TrueColor);
+
+   modes = R128SetupDGAMode (pScrn, modes, &num, 16, 16,
+		(pScrn->bitsPerPixel == 16),
+		(pScrn->depth != 16) ? 0 : pScrn->displayWidth,
+		0xf800, 0x07e0, 0x001f, DirectColor);
+
+   /* 24 */
+   modes = R128SetupDGAMode (pScrn, modes, &num, 24, 24,
+		(pScrn->bitsPerPixel == 24),
+		(pScrn->bitsPerPixel != 24) ? 0 : pScrn->displayWidth,
+		0xff0000, 0x00ff00, 0x0000ff, TrueColor);
+
+   modes = R128SetupDGAMode (pScrn, modes, &num, 24, 24,
+		(pScrn->bitsPerPixel == 24),
+		(pScrn->bitsPerPixel != 24) ? 0 : pScrn->displayWidth,
+		0xff0000, 0x00ff00, 0x0000ff, DirectColor);
+
+   /* 32 */
+   modes = R128SetupDGAMode (pScrn, modes, &num, 32, 24,
+		(pScrn->bitsPerPixel == 32),
+		(pScrn->bitsPerPixel != 32) ? 0 : pScrn->displayWidth,
+		0xff0000, 0x00ff00, 0x0000ff, TrueColor);
+
+   modes = R128SetupDGAMode (pScrn, modes, &num, 32, 24,
+		(pScrn->bitsPerPixel == 32),
+		(pScrn->bitsPerPixel != 32) ? 0 : pScrn->displayWidth,
+		0xff0000, 0x00ff00, 0x0000ff, DirectColor);
+
+   info->numDGAModes = num;
+   info->DGAModes = modes;
+
+   info->DGAFuncs.OpenFramebuffer    = R128_OpenFramebuffer;
+   info->DGAFuncs.CloseFramebuffer   = NULL;
+   info->DGAFuncs.SetMode            = R128_SetMode;
+   info->DGAFuncs.SetViewport        = R128_SetViewport;
+   info->DGAFuncs.GetViewport        = R128_GetViewport;
+
+   info->DGAFuncs.Sync               = NULL;
+   info->DGAFuncs.FillRect           = NULL;
+   info->DGAFuncs.BlitRect           = NULL;
+   info->DGAFuncs.BlitTransRect      = NULL;
+
+   if (info->accel) {
+      info->DGAFuncs.Sync            = info->accel->Sync;
+      if (info->accel->SetupForSolidFill &&
+	  info->accel->SubsequentSolidFillRect)
+	info->DGAFuncs.FillRect      = R128_FillRect;
+      if (info->accel->SetupForScreenToScreenCopy &&
+	  info->accel->SubsequentScreenToScreenCopy) {
+	info->DGAFuncs.BlitRect      = R128_BlitRect;
+	info->DGAFuncs.BlitTransRect = R128_BlitTransRect;
+      }
+   }
+
+   return DGAInit(pScreen, &(info->DGAFuncs), modes, num);
+}
+
+
+static Bool
+R128_SetMode(
+   ScrnInfoPtr pScrn,
+   DGAModePtr pMode
+){
+   static R128FBLayout SavedLayouts[MAXSCREENS];
+   int indx = pScrn->pScreen->myNum;
+   R128InfoPtr info = R128PTR(pScrn);
+
+   if(!pMode) { /* restore the original mode */
+	/* put the ScreenParameters back */
+	if(info->DGAactive)
+	    memcpy(&info->CurrentLayout, &SavedLayouts[indx], sizeof(R128FBLayout));
+
+	pScrn->currentMode = info->CurrentLayout.mode;
+
+	pScrn->SwitchMode(indx, pScrn->currentMode, 0);
+#ifdef XF86DRI
+    	if (info->directRenderingEnabled) {
+	    R128CCE_STOP(pScrn, info);
+    	}
+#endif
+	if (info->accelOn)
+	    R128EngineInit(pScrn);
+#ifdef XF86DRI
+    	if (info->directRenderingEnabled) {
+	    R128CCE_START(pScrn, info);
+    	}
+#endif
+	pScrn->AdjustFrame(indx, 0, 0, 0);
+	info->DGAactive = FALSE;
+   } else {
+	if(!info->DGAactive) {  /* save the old parameters */
+	    memcpy(&SavedLayouts[indx], &info->CurrentLayout, sizeof(R128FBLayout));
+	    info->DGAactive = TRUE;
+	}
+
+	info->CurrentLayout.bitsPerPixel = pMode->bitsPerPixel;
+	info->CurrentLayout.depth = pMode->depth;
+	info->CurrentLayout.displayWidth = pMode->bytesPerScanline /
+					    (pMode->bitsPerPixel >> 3);
+	info->CurrentLayout.pixel_bytes = pMode->bitsPerPixel / 8;
+	info->CurrentLayout.pixel_code  = (pMode->bitsPerPixel != 16
+					  ? pMode->bitsPerPixel
+					  : pMode->depth);
+	/* R128ModeInit() will set the mode field */
+
+	pScrn->SwitchMode(indx, pMode->mode, 0);
+
+#ifdef XF86DRI
+    	if (info->directRenderingEnabled) {
+	    R128CCE_STOP(pScrn, info);
+    	}
+#endif
+	if (info->accelOn)
+		R128EngineInit(pScrn);
+#ifdef XF86DRI
+    	if (info->directRenderingEnabled) {
+	    R128CCE_START(pScrn, info);
+    	}
+#endif
+   }
+
+   return TRUE;
+}
+
+
+
+static int
+R128_GetViewport(
+  ScrnInfoPtr pScrn
+){
+    R128InfoPtr info = R128PTR(pScrn);
+
+    return info->DGAViewportStatus;
+}
+
+
+static void
+R128_SetViewport(
+   ScrnInfoPtr pScrn,
+   int x, int y,
+   int flags
+){
+   R128InfoPtr info = R128PTR(pScrn);
+
+   pScrn->AdjustFrame(pScrn->pScreen->myNum, x, y, flags);
+   info->DGAViewportStatus = 0;  /* FIXME */
+}
+
+
+static void
+R128_FillRect (
+   ScrnInfoPtr pScrn,
+   int x, int y, int w, int h,
+   unsigned long color
+){
+    R128InfoPtr info = R128PTR(pScrn);
+
+    (*info->accel->SetupForSolidFill)(pScrn, color, GXcopy, (CARD32)(~0));
+    (*info->accel->SubsequentSolidFillRect)(pScrn, x, y, w, h);
+
+    if (pScrn->bitsPerPixel == info->CurrentLayout.bitsPerPixel)
+	SET_SYNC_FLAG(info->accel);
+}
+
+static void
+R128_BlitRect(
+   ScrnInfoPtr pScrn,
+   int srcx, int srcy,
+   int w, int h,
+   int dstx, int dsty
+){
+    R128InfoPtr info = R128PTR(pScrn);
+    int xdir = ((srcx < dstx) && (srcy == dsty)) ? -1 : 1;
+    int ydir = (srcy < dsty) ? -1 : 1;
+
+    (*info->accel->SetupForScreenToScreenCopy)(
+	pScrn, xdir, ydir, GXcopy, (CARD32)(~0), -1);
+    (*info->accel->SubsequentScreenToScreenCopy)(
+	pScrn, srcx, srcy, dstx, dsty, w, h);
+
+    if (pScrn->bitsPerPixel == info->CurrentLayout.bitsPerPixel)
+	SET_SYNC_FLAG(info->accel);
+}
+
+
+static void
+R128_BlitTransRect(
+   ScrnInfoPtr pScrn,
+   int srcx, int srcy,
+   int w, int h,
+   int dstx, int dsty,
+   unsigned long color
+){
+    R128InfoPtr info = R128PTR(pScrn);
+    int xdir = ((srcx < dstx) && (srcy == dsty)) ? -1 : 1;
+    int ydir = (srcy < dsty) ? -1 : 1;
+
+    info->XAAForceTransBlit = TRUE;
+
+    (*info->accel->SetupForScreenToScreenCopy)(
+	pScrn, xdir, ydir, GXcopy, (CARD32)(~0), color);
+
+    info->XAAForceTransBlit = FALSE;
+
+    (*info->accel->SubsequentScreenToScreenCopy)(
+	pScrn, srcx, srcy, dstx, dsty, w, h);
+
+    if (pScrn->bitsPerPixel == info->CurrentLayout.bitsPerPixel)
+	SET_SYNC_FLAG(info->accel);
+}
+
+
+static Bool
+R128_OpenFramebuffer(
+   ScrnInfoPtr pScrn,
+   char **name,
+   unsigned char **mem,
+   int *size,
+   int *offset,
+   int *flags
+){
+    R128InfoPtr info = R128PTR(pScrn);
+
+    *name = NULL;               /* no special device */
+    *mem = (unsigned char*)info->LinearAddr;
+    *size = info->FbMapSize;
+    *offset = 0;
+    *flags = /* DGA_NEED_ROOT */ 0; /* don't need root, just /dev/mem access */
+
+    return TRUE;
+}