Importing xf86-video-s3virge 1.9.1

1 files changed, 361 insertions, 0 deletions

diff --git a/driver/xf86-video-s3virge/src/s3v_dga.c b/driver/xf86-video-s3virge/src/s3v_dga.c
new file mode 100644
index 000000000..4449a67df
--- /dev/null
+++ b/driver/xf86-video-s3virge/src/s3v_dga.c
@@ -0,0 +1,361 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/s3virge/s3v_dga.c,v 1.7 2002/01/14 18:02:58 dawes Exp $ */
+
+/*
+Copyright (C) 1994-2000 The XFree86 Project, Inc.  All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FIT-
+NESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+XFREE86 PROJECT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of the XFree86 Project shall not
+be used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from the XFree86 Project.
+*/
+
+/*
+Copyright (C) 1994-2000 The XFree86 Project, Inc.  All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FIT-
+NESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+XFREE86 PROJECT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of the XFree86 Project shall not
+be used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from the XFree86 Project.
+*/
+
+/*
+ * file: s3v_dga.c
+ * ported from mga
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "xf86.h"
+#include "xf86_OSproc.h"
+#include "xf86Pci.h"
+#include "xf86PciInfo.h"
+#include "xaa.h"
+#include "xaalocal.h"
+#include "s3v.h"
+#if 0
+#include "mga_bios.h"
+#include "mga.h"
+#include "mga_reg.h"
+#include "mga_macros.h"
+#endif
+#include "dgaproc.h"
+
+
+static Bool S3V_OpenFramebuffer(ScrnInfoPtr, char **, unsigned char **, 
+					int *, int *, int *);
+static Bool S3V_SetMode(ScrnInfoPtr, DGAModePtr);
+static int  S3V_GetViewport(ScrnInfoPtr);
+static void S3V_SetViewport(ScrnInfoPtr, int, int, int);
+static void S3V_FillRect(ScrnInfoPtr, int, int, int, int, unsigned long);
+static void S3V_BlitRect(ScrnInfoPtr, int, int, int, int, int, int);
+/* dummy... */
+#if 0
+static void MGA_BlitTransRect(ScrnInfoPtr, int, int, int, int, int, int, 
+					unsigned long);
+#endif
+
+static
+DGAFunctionRec S3V_DGAFuncs = {
+   S3V_OpenFramebuffer,
+   NULL,
+   S3V_SetMode,
+   S3V_SetViewport,
+   S3V_GetViewport,
+   S3VAccelSync,
+   S3V_FillRect,
+   S3V_BlitRect,
+   NULL
+   /* dummy... MGA_BlitTransRect */
+};
+
+
+Bool
+S3VDGAInit(ScreenPtr pScreen)
+{   
+   ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
+   S3VPtr ps3v = S3VPTR(pScrn);
+   DGAModePtr modes = NULL, newmodes = NULL, currentMode;
+   DisplayModePtr pMode, firstMode;
+   int Bpp = pScrn->bitsPerPixel >> 3;
+   int num = 0;
+   Bool oneMore;
+
+   PVERB5("	S3VDGAInit\n");
+    
+   pMode = firstMode = pScrn->modes;
+
+   while(pMode) {
+	/* The MGA driver wasn't designed with switching depths in
+	   mind.  Subsequently, large chunks of it will probably need
+	   to be rewritten to accommodate depth changes in DGA mode */
+
+	if(0 /*pScrn->displayWidth != pMode->HDisplay*/) {
+	    newmodes = xrealloc(modes, (num + 2) * sizeof(DGAModeRec));
+	    oneMore = TRUE;
+	} else {
+	    newmodes = xrealloc(modes, (num + 1) * sizeof(DGAModeRec));
+	    oneMore = FALSE;
+	}
+
+	if(!newmodes) {
+	   xfree(modes);
+	   return FALSE;
+	}
+	modes = newmodes;
+
+SECOND_PASS:
+
+	currentMode = modes + num;
+	num++;
+
+	currentMode->mode = pMode;
+	currentMode->flags = DGA_CONCURRENT_ACCESS | DGA_PIXMAP_AVAILABLE;
+	if(!ps3v->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 = (Bpp == 1) ? PseudoColor : TrueColor;
+	currentMode->viewportWidth = pMode->HDisplay;
+	currentMode->viewportHeight = pMode->VDisplay;
+	/* currentMode->xViewportStep = (3 - ps3v->BppShift); */
+				/* always 1 on ViRGE ? */
+	currentMode->xViewportStep = 1;
+	currentMode->yViewportStep = 1;
+	currentMode->viewportFlags = DGA_FLIP_RETRACE;
+	/* currentMode->offset = ps3v->YDstOrg * (pScrn->bitsPerPixel / 8);
+	 * MGA, 0 for ViRGE */
+	currentMode->offset = 0;
+	/* currentMode->address = pMga->FbStart;   MGA */
+	currentMode->address = ps3v->FBBase;
+/*cep*/
+  xf86ErrorFVerb(VERBLEV, 
+	"	S3VDGAInit firstone vpWid=%d, vpHgt=%d, Bpp=%d, mdbitsPP=%d\n",
+		currentMode->viewportWidth,
+		currentMode->viewportHeight,
+		Bpp,
+		currentMode->bitsPerPixel
+		 );
+		
+
+	if(oneMore) { /* first one is narrow width */
+	    currentMode->bytesPerScanline = ((pMode->HDisplay * Bpp) + 3) & ~3L;
+	    currentMode->imageWidth = pMode->HDisplay;
+	    /* currentMode->imageHeight =  pMga->FbUsableSize /
+					currentMode->bytesPerScanline; 
+					MGA above */
+	    currentMode->imageHeight =  pMode->VDisplay;
+	    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;
+	    oneMore = FALSE;
+
+/*cep*/
+  xf86ErrorFVerb(VERBLEV, 
+	"	S3VDGAInit imgHgt=%d, ram=%d, bytesPerScanl=%d\n",
+		currentMode->imageHeight,
+		ps3v->videoRambytes,
+		currentMode->bytesPerScanline );
+		
+	    goto SECOND_PASS;
+	} else {
+	    currentMode->bytesPerScanline = 
+			((pScrn->displayWidth * Bpp) + 3) & ~3L;
+	    currentMode->imageWidth = pScrn->displayWidth;
+	    /* currentMode->imageHeight =  pMga->FbUsableSize /
+					currentMode->bytesPerScanline; 
+					*/
+	    currentMode->imageHeight =  ps3v->videoRambytes /
+	    			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;
+	}	    
+
+	pMode = pMode->next;
+	if(pMode == firstMode)
+	   break;
+   }
+
+   ps3v->numDGAModes = num;
+   ps3v->DGAModes = modes;
+
+   return DGAInit(pScreen, &S3V_DGAFuncs, modes, num);  
+}
+
+
+static Bool
+S3V_SetMode(
+   ScrnInfoPtr pScrn,
+   DGAModePtr pMode
+){
+   static int OldDisplayWidth[MAXSCREENS];
+   int index = pScrn->pScreen->myNum;
+
+   S3VPtr ps3v = S3VPTR(pScrn);
+
+   if(!pMode) { /* restore the original mode */
+	/* put the ScreenParameters back */
+	
+	pScrn->displayWidth = OldDisplayWidth[index];
+	
+        S3VSwitchMode(index, pScrn->currentMode, 0);
+	ps3v->DGAactive = FALSE;
+   } else {
+	if(!ps3v->DGAactive) {  /* save the old parameters */
+	    OldDisplayWidth[index] = pScrn->displayWidth;
+
+	    ps3v->DGAactive = TRUE;
+	}
+
+	pScrn->displayWidth = pMode->bytesPerScanline / 
+			      (pMode->bitsPerPixel >> 3);
+
+        S3VSwitchMode(index, pMode->mode, 0);
+   }
+   
+   return TRUE;
+}
+
+
+
+static int  
+S3V_GetViewport(
+  ScrnInfoPtr pScrn
+){
+    S3VPtr ps3v = S3VPTR(pScrn);
+
+    return ps3v->DGAViewportStatus;
+}
+
+static void 
+S3V_SetViewport(
+   ScrnInfoPtr pScrn, 
+   int x, int y, 
+   int flags
+){
+   S3VPtr ps3v = S3VPTR(pScrn);
+
+   S3VAdjustFrame(pScrn->pScreen->myNum, x, y, flags);
+   ps3v->DGAViewportStatus = 0;  /* MGAAdjustFrame loops until finished */
+}
+
+static void 
+S3V_FillRect (
+   ScrnInfoPtr pScrn, 
+   int x, int y, int w, int h, 
+   unsigned long color
+){
+    S3VPtr ps3v = S3VPTR(pScrn);
+
+    if(ps3v->AccelInfoRec) {
+	(*ps3v->AccelInfoRec->SetupForSolidFill)(pScrn, color, GXcopy, ~0);
+	(*ps3v->AccelInfoRec->SubsequentSolidFillRect)(pScrn, x, y, w, h);
+	SET_SYNC_FLAG(ps3v->AccelInfoRec);
+    }
+}
+
+static void 
+S3V_BlitRect(
+   ScrnInfoPtr pScrn, 
+   int srcx, int srcy, 
+   int w, int h, 
+   int dstx, int dsty
+){
+    S3VPtr ps3v = S3VPTR(pScrn);
+
+    if(ps3v->AccelInfoRec) {
+	int xdir = ((srcx < dstx) && (srcy == dsty)) ? -1 : 1;
+	int ydir = (srcy < dsty) ? -1 : 1;
+
+	(*ps3v->AccelInfoRec->SetupForScreenToScreenCopy)(
+		pScrn, xdir, ydir, GXcopy, ~0, -1);
+	(*ps3v->AccelInfoRec->SubsequentScreenToScreenCopy)(
+		pScrn, srcx, srcy, dstx, dsty, w, h);
+	SET_SYNC_FLAG(ps3v->AccelInfoRec);
+    }
+}
+
+#if 0
+static void 
+MGA_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 */
+}
+#endif
+
+static Bool 
+S3V_OpenFramebuffer(
+   ScrnInfoPtr pScrn, 
+   char **name,
+   unsigned char **mem,
+   int *size,
+   int *offset,
+   int *flags
+){
+    S3VPtr ps3v = S3VPTR(pScrn);
+
+    *name = NULL; 		/* no special device */
+    *mem = (unsigned char*)ps3v->PciInfo->memBase[0];
+    *size = ps3v->videoRambytes;
+    *offset = 0;
+    *flags = DGA_NEED_ROOT;
+
+    return TRUE;
+}