mga driver, brought over by Jon Smirl

src/mesa/drivers/dri/mga/Makefile.X11

@@ -0,0 +1,116 @@
+# $Id: Makefile.X11,v 1.1 2003/08/06 18:01:13 keithw Exp $
+
+# Mesa 3-D graphics library
+# Version:  5.0
+# Copyright (C) 1995-2002  Brian Paul
+
+TOP = ../../../../..
+
+SHARED_INCLUDES = $(INCLUDE_DIRS) -I. -I../common -Iserver
+MINIGLX_INCLUDES = -I$(TOP)/src/miniglx 
+
+DEFINES += \
+	-D_HAVE_SWRAST=1 \
+	-D_HAVE_SWTNL=1 \
+	-D_HAVE_SANITY=1 \
+	-D_HAVE_CODEGEN=1 \
+	-D_HAVE_LIGHTING=1 \
+	-D_HAVE_TEXGEN=1 \
+	-D_HAVE_USERCLIP=1
+
+MINIGLX_SOURCES = server/mga_dri.c 
+
+DRIVER_SOURCES = mgabuffers.c \
+		 mgadd.c \
+		 mgaioctl.c \
+		 mgarender.c \
+		 mgastate.c \
+		 mgatris.c \
+		 ../common/mm.c 
+
+FULL_DRIVER_SOURCES = 	\
+		 mgapixel.c \
+		 mgaspan.c \
+		 mgatex.c \
+		 mgatexcnv.c \
+		 mgatexmem.c \
+		 mgavb.c \
+		 mga_xmesa.c
+
+
+INCLUDES = $(MINIGLX_INCLUDES) \
+	   $(SHARED_INCLUDES)
+
+
+C_SOURCES = $(MINIGLX_SOURCES) \
+	    $(FULL_DRIVER_SOURCES) \
+	    $(DRIVER_SOURCES) 
+
+MESA_MODULES = $(TOP)/src/mesa/mesa.a
+
+
+ifeq ($(WINDOW_SYSTEM),dri)
+WINOBJ=$(MESABUILDDIR)/dri/dri.a
+WINLIB=
+else
+WINOBJ=
+WINLIB=-L$(MESA)/src/miniglx
+endif
+
+ASM_SOURCES = 
+OBJECTS = $(C_SOURCES:.c=.o) \
+	  $(ASM_SOURCES:.S=.o) 
+
+
+
+### Include directories
+
+INCLUDE_DIRS = \
+	-I$(TOP)/include \
+	-I$(TOP)/src/mesa \
+	-I$(TOP)/src/mesa/main \
+	-I$(TOP)/src/mesa/glapi \
+	-I$(TOP)/src/mesa/math \
+	-I$(TOP)/src/mesa/transform \
+	-I$(TOP)/src/mesa/swrast \
+	-I$(TOP)/src/mesa/swrast_setup
+
+
+##### RULES #####
+
+.c.o:
+	$(CC) -c $(SHARED_INCLUDES) $(MINIGLX_INCLUDES) $(CFLAGS) $(DEFINES) $< -o $@
+
+.S.o:
+	$(CC) -c $(SHARED_INCLUDES) $(MINIGLX_INCLUDES) $(CFLAGS) $(DEFINES)  $< -o $@
+
+
+##### TARGETS #####
+
+targets: mga_dri.so
+
+mga_dri.so:  $(OBJECTS) $(MESA_MODULES) $(WINOBJ) Makefile.X11
+	rm -f $@ && gcc -o $@ -shared $(OBJECTS) $(MESA_MODULES) $(WINOBJ) $(WINLIB) -lc -lm
+	rm -f $(TOP)/lib/mga_dri.so && \
+	install mga_dri.so $(TOP)/lib/mga_dri.so
+
+# Run 'make -f Makefile.X11 dep' to update the dependencies if you change
+# what's included by any source file.
+dep: $(C_SOURCES) $(ASM_SOURCES)
+	makedepend -fdepend -Y $(SHARED_INCLUDES) \
+		$(C_SOURCES) $(ASM_SOURCES)
+
+
+# Emacs tags
+tags:
+	etags `find . -name \*.[ch]` `find ../include`
+
+
+# Remove .o and backup files
+clean:
+	-rm -f *.o *~ *.o *~ *.so
+
+
+include $(TOP)/Make-config
+
+include depend

src/mesa/drivers/dri/mga/README

@@ -0,0 +1,26 @@
+MGA DRI driver ported from XF86DRI to FBDRI
+by Denis Oliver Kropp <dok@directfb.org>
+
+
+INFO
+
+This driver has been ported from the head branch of XFree86 to
+the embedded-1-branch of Mesa.
+
+
+STATUS
+
+Already working very well as far as I've tested it (16/32 bit).
+glxgears runs at 935 fps (G550 32MB AGP 4x, Athlon 1.33) vs 744 fps with XFree.
+Other demos (terrain, fire, etc.) have been successfully tested as well.
+
+
+TODO
+
+- mgaEngineShutdown
+- mgaEngineRestore
+- SGRAM detection
+- remove some unused bits from server/*
+- subset driver support
+- mgaWaitForVBlank
+- deinitialization (from MGADRICloseScreen) a la radeonDestroyScreen

src/mesa/drivers/dri/mga/mga_xmesa.c

@@ -0,0 +1,616 @@
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mga_xmesa.c,v 1.19 2003/03/26 20:43:49 tsi Exp $ */
+/*
+ * Copyright 2000-2001 VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#include <stdio.h>
+
+#include "mga_common.h"
+#include "mga_xmesa.h"
+#include "context.h"
+#include "matrix.h"
+/*#include "mmath.h"*/
+#include "simple_list.h"
+/*#include "mem.h"*/
+
+#include "swrast/swrast.h"
+#include "swrast_setup/swrast_setup.h"
+#include "tnl/tnl.h"
+#include "array_cache/acache.h"
+
+#include "tnl/t_pipeline.h"
+
+#include "mgadd.h"
+#include "mgastate.h"
+#include "mgatex.h"
+#include "mgaspan.h"
+#include "mgaioctl.h"
+#include "mgatris.h"
+#include "mgavb.h"
+#include "mgabuffers.h"
+#include "mgapixel.h"
+
+#include "mga_xmesa.h"
+
+#include "mga_dri.h"
+
+
+#ifndef MGA_DEBUG
+int MGA_DEBUG = (0
+/*		 | DEBUG_ALWAYS_SYNC */
+/*		 | DEBUG_VERBOSE_MSG */
+/*		 | DEBUG_VERBOSE_LRU */
+/*		 | DEBUG_VERBOSE_DRI */
+/*		 | DEBUG_VERBOSE_IOCTL */
+/*		 | DEBUG_VERBOSE_2D */
+/*		 | DEBUG_VERBOSE_FALLBACK */
+   );
+#endif
+
+
+static GLboolean
+mgaInitDriver(__DRIscreenPrivate *sPriv)
+{
+   mgaScreenPrivate *mgaScreen;
+   MGADRIPtr         serverInfo = (MGADRIPtr)sPriv->pDevPriv;
+
+   if (MGA_DEBUG&DEBUG_VERBOSE_DRI)
+      fprintf(stderr, "mgaInitDriver\n");
+
+   /* Check that the DRM driver version is compatible */
+   if (sPriv->drmMajor != 3 ||
+       sPriv->drmMinor < 0) {
+      __driUtilMessage("MGA DRI driver expected DRM driver version 3.0.x but got version %d.%d.%d", sPriv->drmMajor, sPriv->drmMinor, sPriv->drmPatch);
+      return GL_FALSE;
+   }
+
+
+   /* Allocate the private area */
+   mgaScreen = (mgaScreenPrivate *)MALLOC(sizeof(mgaScreenPrivate));
+   if (!mgaScreen) {
+      __driUtilMessage("Couldn't malloc screen struct");
+      return GL_FALSE;
+   }
+
+   mgaScreen->sPriv = sPriv;
+   sPriv->private = (void *)mgaScreen;
+
+   if (sPriv->drmMinor >= 1) {
+      int ret;
+      drmMGAGetParam gp;
+
+      gp.param = MGA_PARAM_IRQ_NR;
+      gp.value = (int *) &mgaScreen->irq;
+
+      ret = drmCommandWriteRead( sPriv->fd, DRM_MGA_GETPARAM,
+				    &gp, sizeof(gp));
+      if (ret) {
+	    fprintf(stderr, "drmMgaGetParam (MGA_PARAM_IRQ_NR): %d\n", ret);
+	    FREE(mgaScreen);
+	    sPriv->private = NULL;
+	    return GL_FALSE;
+      }
+   }
+   
+   if (serverInfo->chipset != MGA_CARD_TYPE_G200 &&
+       serverInfo->chipset != MGA_CARD_TYPE_G400) {
+      FREE(mgaScreen);
+      sPriv->private = NULL;
+      __driUtilMessage("Unrecognized chipset");
+      return GL_FALSE;
+   }
+
+
+   mgaScreen->chipset = serverInfo->chipset;
+   mgaScreen->width = serverInfo->width;
+   mgaScreen->height = serverInfo->height;
+   mgaScreen->mem = serverInfo->mem;
+   mgaScreen->cpp = serverInfo->cpp;
+
+   mgaScreen->agpMode = serverInfo->agpMode;
+
+   mgaScreen->frontPitch = serverInfo->frontPitch;
+   mgaScreen->frontOffset = serverInfo->frontOffset;
+   mgaScreen->backOffset = serverInfo->backOffset;
+   mgaScreen->backPitch  =  serverInfo->backPitch;
+   mgaScreen->depthOffset = serverInfo->depthOffset;
+   mgaScreen->depthPitch  =  serverInfo->depthPitch;
+
+   mgaScreen->mmio.handle = serverInfo->registers.handle;
+   mgaScreen->mmio.size = serverInfo->registers.size;
+   if ( drmMap( sPriv->fd,
+		mgaScreen->mmio.handle, mgaScreen->mmio.size,
+		&mgaScreen->mmio.map ) < 0 ) {
+      FREE( mgaScreen );
+      sPriv->private = NULL;
+      __driUtilMessage( "Couldn't map MMIO registers" );
+      return GL_FALSE;
+   }
+
+   mgaScreen->primary.handle = serverInfo->primary.handle;
+   mgaScreen->primary.size = serverInfo->primary.size;
+   mgaScreen->buffers.handle = serverInfo->buffers.handle;
+   mgaScreen->buffers.size = serverInfo->buffers.size;
+
+#if 0
+   mgaScreen->agp.handle = serverInfo->agp;
+   mgaScreen->agp.size = serverInfo->agpSize;
+
+   if (drmMap(sPriv->fd,
+	      mgaScreen->agp.handle,
+	      mgaScreen->agp.size,
+	      (drmAddress *)&mgaScreen->agp.map) != 0)
+   {
+      Xfree(mgaScreen);
+      sPriv->private = NULL;
+      __driUtilMessage("Couldn't map agp region");
+      return GL_FALSE;
+   }
+#endif
+
+   mgaScreen->textureOffset[MGA_CARD_HEAP] = serverInfo->textureOffset;
+   mgaScreen->textureOffset[MGA_AGP_HEAP] = (serverInfo->agpTextureOffset |
+					     PDEA_pagpxfer_enable | 1);
+
+   mgaScreen->textureSize[MGA_CARD_HEAP] = serverInfo->textureSize;
+   mgaScreen->textureSize[MGA_AGP_HEAP] = serverInfo->agpTextureSize;
+
+   mgaScreen->logTextureGranularity[MGA_CARD_HEAP] =
+      serverInfo->logTextureGranularity;
+   mgaScreen->logTextureGranularity[MGA_AGP_HEAP] =
+      serverInfo->logAgpTextureGranularity;
+
+   mgaScreen->texVirtual[MGA_CARD_HEAP] = (char *)(mgaScreen->sPriv->pFB +
+					   serverInfo->textureOffset);
+   if (drmMap(sPriv->fd,
+              serverInfo->agpTextureOffset,
+              serverInfo->agpTextureSize,
+              (drmAddress *)&mgaScreen->texVirtual[MGA_AGP_HEAP]) != 0)
+   {
+      free(mgaScreen);
+      sPriv->private = NULL;
+      __driUtilMessage("Couldn't map agptexture region");
+      return GL_FALSE;
+   }
+
+#if 0
+   mgaScreen->texVirtual[MGA_AGP_HEAP] = (mgaScreen->agp.map +
+					  serverInfo->agpTextureOffset);
+#endif
+
+   mgaScreen->mAccess = serverInfo->mAccess;
+
+   /* For calculating setupdma addresses.
+    */
+   mgaScreen->dmaOffset = serverInfo->buffers.handle;
+
+   mgaScreen->bufs = drmMapBufs(sPriv->fd);
+   if (!mgaScreen->bufs) {
+      /*drmUnmap(mgaScreen->agp_tex.map, mgaScreen->agp_tex.size);*/
+      FREE(mgaScreen);
+      sPriv->private = NULL;
+      __driUtilMessage("Couldn't map dma buffers");
+      return GL_FALSE;
+   }
+   mgaScreen->sarea_priv_offset = serverInfo->sarea_priv_offset;
+
+   return GL_TRUE;
+}
+
+
+static void
+mgaDestroyScreen(__DRIscreenPrivate *sPriv)
+{
+   mgaScreenPrivate *mgaScreen = (mgaScreenPrivate *) sPriv->private;
+
+   if (MGA_DEBUG&DEBUG_VERBOSE_DRI)
+      fprintf(stderr, "mgaDestroyScreen\n");
+
+   /*drmUnmap(mgaScreen->agp_tex.map, mgaScreen->agp_tex.size);*/
+   free(mgaScreen);
+   sPriv->private = NULL;
+}
+
+
+extern const struct gl_pipeline_stage _mga_render_stage;
+
+static const struct gl_pipeline_stage *mga_pipeline[] = {
+   &_tnl_vertex_transform_stage, 
+   &_tnl_normal_transform_stage, 
+   &_tnl_lighting_stage,	
+   &_tnl_fog_coordinate_stage,
+   &_tnl_texgen_stage, 
+   &_tnl_texture_transform_stage, 
+				/* REMOVE: point attenuation stage */
+#if 0
+   &_mga_render_stage,		/* ADD: unclipped rastersetup-to-dma */
+                                /* Need new ioctl for wacceptseq */
+#endif
+   &_tnl_render_stage,		
+   0,
+};
+
+
+static GLboolean
+mgaCreateContext( const __GLcontextModes *mesaVis,
+                  __DRIcontextPrivate *driContextPriv,
+                  void *sharedContextPrivate )
+{
+   int i;
+   GLcontext *ctx, *shareCtx;
+   mgaContextPtr mmesa;
+   __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
+   mgaScreenPrivate *mgaScreen = (mgaScreenPrivate *)sPriv->private;
+   MGASAREAPrivPtr saPriv=(MGASAREAPrivPtr)(((char*)sPriv->pSAREA)+
+					      mgaScreen->sarea_priv_offset);
+
+   if (MGA_DEBUG&DEBUG_VERBOSE_DRI)
+      fprintf(stderr, "mgaCreateContext\n");
+
+   /* allocate mga context */
+   mmesa = (mgaContextPtr) CALLOC(sizeof(mgaContext));
+   if (!mmesa) {
+      return GL_FALSE;
+   }
+
+   /* Allocate the Mesa context */
+   if (sharedContextPrivate)
+      shareCtx = ((mgaContextPtr) sharedContextPrivate)->glCtx;
+   else 
+      shareCtx = NULL;
+   mmesa->glCtx = _mesa_create_context(mesaVis, shareCtx, mmesa, GL_TRUE);
+   if (!mmesa->glCtx) {
+      FREE(mmesa);
+      return GL_FALSE;
+   }
+   driContextPriv->driverPrivate = mmesa;
+
+   /* Init mga state */
+   mmesa->hHWContext = driContextPriv->hHWContext;
+   mmesa->driFd = sPriv->fd;
+   mmesa->driHwLock = &sPriv->pSAREA->lock;
+
+   mmesa->mgaScreen = mgaScreen;
+   mmesa->driScreen = sPriv;
+   mmesa->sarea = (void *)saPriv;
+   mmesa->glBuffer = NULL;
+
+   make_empty_list(&mmesa->SwappedOut);
+
+   mmesa->lastTexHeap = mgaScreen->texVirtual[MGA_AGP_HEAP] ? 2 : 1;
+
+   for (i = 0 ; i < mmesa->lastTexHeap ; i++) {
+      mmesa->texHeap[i] = mmInit( 0, mgaScreen->textureSize[i]);
+      make_empty_list(&mmesa->TexObjList[i]);
+   }
+
+   /* Set the maximum texture size small enough that we can guarentee
+    * that both texture units can bind a maximal texture and have them
+    * on the card at once.
+    */
+   ctx = mmesa->glCtx;
+   { 
+      int nr = 2;
+
+      if (mgaScreen->chipset == MGA_CARD_TYPE_G200)
+	 nr = 1;
+
+      if (mgaScreen->textureSize[0] < nr*1024*1024) {
+	 ctx->Const.MaxTextureLevels = 9;
+      } else if (mgaScreen->textureSize[0] < nr*4*1024*1024) {
+	 ctx->Const.MaxTextureLevels = 10;
+      } else {
+	 ctx->Const.MaxTextureLevels = 11;
+      }
+
+      ctx->Const.MaxTextureUnits = nr;
+   }
+
+   ctx->Const.MinLineWidth = 1.0;
+   ctx->Const.MinLineWidthAA = 1.0;
+   ctx->Const.MaxLineWidth = 10.0;
+   ctx->Const.MaxLineWidthAA = 10.0;
+   ctx->Const.LineWidthGranularity = 1.0;
+
+   mmesa->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
+
+   switch (mesaVis->depthBits) {
+   case 16: 
+      mmesa->depth_scale = 1.0/(GLdouble)0xffff; 
+      mmesa->depth_clear_mask = ~0;
+      mmesa->ClearDepth = 0xffff;
+      break;
+   case 24:
+      mmesa->depth_scale = 1.0/(GLdouble)0xffffff;
+      if (mmesa->hw_stencil) {
+	 mmesa->depth_clear_mask = 0xffffff00;
+	 mmesa->stencil_clear_mask = 0x000000ff;
+      } else
+	 mmesa->depth_clear_mask = ~0;
+      mmesa->ClearDepth = 0xffffff00;
+      break;
+   case 32:
+      mmesa->depth_scale = 1.0/(GLdouble)0xffffffff;
+      mmesa->depth_clear_mask = ~0;
+      mmesa->ClearDepth = 0xffffffff;
+      break;
+   };
+
+   mmesa->haveHwStipple = GL_FALSE;
+   mmesa->RenderIndex = -1;		/* impossible value */
+   mmesa->new_state = ~0;
+   mmesa->dirty = ~0;
+   mmesa->vertex_format = 0;   
+   mmesa->CurrentTexObj[0] = 0;
+   mmesa->CurrentTexObj[1] = 0;
+   mmesa->tmu_source[0] = 0;
+   mmesa->tmu_source[1] = 1;
+
+   mmesa->texAge[0] = 0;
+   mmesa->texAge[1] = 0;
+   
+   /* Initialize the software rasterizer and helper modules.
+    */
+   _swrast_CreateContext( ctx );
+   _ac_CreateContext( ctx );
+   _tnl_CreateContext( ctx );
+   
+   _swsetup_CreateContext( ctx );
+
+   /* Install the customized pipeline:
+    */
+   _tnl_destroy_pipeline( ctx );
+   _tnl_install_pipeline( ctx, mga_pipeline );
+
+   /* Configure swrast to match hardware characteristics:
+    */
+   _swrast_allow_pixel_fog( ctx, GL_FALSE );
+   _swrast_allow_vertex_fog( ctx, GL_TRUE );
+
+   mmesa->primary_offset = mmesa->mgaScreen->primary.handle;
+
+   ctx->DriverCtx = (void *) mmesa;
+   mmesa->glCtx = ctx;
+
+   mgaDDExtensionsInit( ctx );
+
+   mgaDDInitStateFuncs( ctx );
+   mgaDDInitTextureFuncs( ctx );
+   mgaDDInitSpanFuncs( ctx );
+   mgaDDInitDriverFuncs( ctx );
+   mgaDDInitIoctlFuncs( ctx );
+   mgaDDInitPixelFuncs( ctx );
+   mgaDDInitTriFuncs( ctx );
+
+   mgaInitVB( ctx );
+   mgaInitState( mmesa );
+
+   driContextPriv->driverPrivate = (void *) mmesa;
+
+   return GL_TRUE;
+}
+
+static void
+mgaDestroyContext(__DRIcontextPrivate *driContextPriv)
+{
+   mgaContextPtr mmesa = (mgaContextPtr) driContextPriv->driverPrivate;
+
+   if (MGA_DEBUG&DEBUG_VERBOSE_DRI)
+      fprintf(stderr, "mgaDestroyContext\n");
+
+   assert(mmesa); /* should never be null */
+   if (mmesa) {
+      _swsetup_DestroyContext( mmesa->glCtx );
+      _tnl_DestroyContext( mmesa->glCtx );
+      _ac_DestroyContext( mmesa->glCtx );
+      _swrast_DestroyContext( mmesa->glCtx );
+
+      mgaFreeVB( mmesa->glCtx );
+
+      /* free the Mesa context */
+      mmesa->glCtx->DriverCtx = NULL;
+      _mesa_destroy_context(mmesa->glCtx);
+      /* free the mga context */
+      FREE(mmesa);
+   }
+}
+
+
+static GLboolean
+mgaCreateBuffer( __DRIscreenPrivate *driScrnPriv,
+                 __DRIdrawablePrivate *driDrawPriv,
+                 const __GLcontextModes *mesaVis,
+                 GLboolean isPixmap )
+{
+   if (isPixmap) {
+      return GL_FALSE; /* not implemented */
+   }
+   else {
+      GLboolean swStencil = (mesaVis->stencilBits > 0 && 
+			     mesaVis->depthBits != 24);
+
+      driDrawPriv->driverPrivate = (void *) 
+         _mesa_create_framebuffer(mesaVis,
+                                  GL_FALSE,  /* software depth buffer? */
+                                  swStencil,
+                                  mesaVis->accumRedBits > 0,
+                                  mesaVis->alphaBits > 0 );
+
+      return (driDrawPriv->driverPrivate != NULL);
+   }
+}
+
+
+static void
+mgaDestroyBuffer(__DRIdrawablePrivate *driDrawPriv)
+{
+   _mesa_destroy_framebuffer((GLframebuffer *) (driDrawPriv->driverPrivate));
+}
+
+
+static GLboolean
+mgaUnbindContext(__DRIcontextPrivate *driContextPriv)
+{
+   mgaContextPtr mmesa = (mgaContextPtr) driContextPriv->driverPrivate;
+   if (mmesa)
+      mmesa->dirty = ~0;
+
+   return GL_TRUE;
+}
+
+static GLboolean
+mgaOpenFullScreen(__DRIcontextPrivate *driContextPriv)
+{
+    return GL_TRUE;
+}
+
+static GLboolean
+mgaCloseFullScreen(__DRIcontextPrivate *driContextPriv)
+{
+    return GL_TRUE;
+}
+
+
+/* This looks buggy to me - the 'b' variable isn't used anywhere...
+ * Hmm - It seems that the drawable is already hooked in to
+ * driDrawablePriv.
+ *
+ * But why are we doing context initialization here???
+ */
+static GLboolean
+mgaMakeCurrent(__DRIcontextPrivate *driContextPriv,
+               __DRIdrawablePrivate *driDrawPriv,
+               __DRIdrawablePrivate *driReadPriv)
+{
+   fprintf(stderr, "%s\n", __FUNCTION__);
+
+   if (driContextPriv) {
+      mgaContextPtr mmesa = (mgaContextPtr) driContextPriv->driverPrivate;
+
+      if (mmesa->driDrawable != driDrawPriv) {
+	 mmesa->driDrawable = driDrawPriv;
+	 mmesa->dirty = ~0; 
+	 mmesa->dirty_cliprects = (MGA_FRONT|MGA_BACK); 
+      }
+
+      _mesa_make_current2(mmesa->glCtx,
+                          (GLframebuffer *) driDrawPriv->driverPrivate,
+                          (GLframebuffer *) driReadPriv->driverPrivate);
+
+      if (!mmesa->glCtx->Viewport.Width)
+	 _mesa_set_viewport(mmesa->glCtx, 0, 0,
+                            driDrawPriv->w, driDrawPriv->h);
+
+   }
+   else {
+      _mesa_make_current(NULL, NULL);
+   }
+
+   return GL_TRUE;
+}
+
+void mgaGetLock( mgaContextPtr mmesa, GLuint flags )
+{
+   __DRIdrawablePrivate *dPriv = mmesa->driDrawable;
+   MGASAREAPrivPtr sarea = mmesa->sarea;
+   int me = mmesa->hHWContext;
+   int i;
+
+   fprintf(stderr, "%s\n", __FUNCTION__);
+
+   drmGetLock(mmesa->driFd, mmesa->hHWContext, flags);
+   
+   fprintf(stderr, 
+	   "mmesa->lastStamp %d dpriv->lastStamp %d *(dpriv->pStamp) %d\n",
+	   mmesa->lastStamp, 
+	   dPriv->lastStamp,
+	   *(dPriv->pStamp));
+   
+   /* The window might have moved, so we might need to get new clip
+    * rects.
+    *
+    * NOTE: This releases and regrabs the hw lock to allow the X server
+    * to respond to the DRI protocol request for new drawable info.
+    * Since the hardware state depends on having the latest drawable
+    * clip rects, all state checking must be done _after_ this call.
+    */
+   DRI_VALIDATE_DRAWABLE_INFO( sPriv, dPriv );
+
+   if ( mmesa->lastStamp == 0 ||
+	mmesa->lastStamp != dPriv->lastStamp ) {
+      mmesa->lastStamp = dPriv->lastStamp;
+      mmesa->SetupNewInputs |= VERT_BIT_CLIP;
+      mmesa->dirty_cliprects = (MGA_FRONT|MGA_BACK);
+      mgaUpdateRects( mmesa, (MGA_FRONT|MGA_BACK) );
+   }
+
+   mmesa->dirty |= MGA_UPLOAD_CONTEXT | MGA_UPLOAD_CLIPRECTS;
+
+   mmesa->sarea->dirty |= MGA_UPLOAD_CONTEXT;
+
+   if (sarea->ctxOwner != me) {
+      mmesa->dirty |= (MGA_UPLOAD_CONTEXT | MGA_UPLOAD_TEX0 |
+		       MGA_UPLOAD_TEX1 | MGA_UPLOAD_PIPE);
+      sarea->ctxOwner=me;
+   }
+
+   for (i = 0 ; i < mmesa->lastTexHeap ; i++)
+      if (sarea->texAge[i] != mmesa->texAge[i])
+	 mgaAgeTextures( mmesa, i );
+
+   sarea->last_quiescent = -1;	/* just kill it for now */
+}
+
+
+
+static const struct __DriverAPIRec mgaAPI = {
+   mgaInitDriver,
+   mgaDestroyScreen,
+   mgaCreateContext,
+   mgaDestroyContext,
+   mgaCreateBuffer,
+   mgaDestroyBuffer,
+   mgaSwapBuffers,
+   mgaMakeCurrent,
+   mgaUnbindContext,
+   mgaOpenFullScreen,
+   mgaCloseFullScreen
+};
+
+
+
+/*
+ * This is the bootstrap function for the driver.
+ * The __driCreateScreen name is the symbol that libGL.so fetches.
+ * Return:  pointer to a __DRIscreenPrivate.
+ */
+void *__driCreateScreen(struct DRIDriverRec *driver,
+                        struct DRIDriverContextRec *driverContext)
+{
+   __DRIscreenPrivate *psp;
+   psp = __driUtilCreateScreen(driver, driverContext, &mgaAPI);
+   return (void *) psp;
+}

src/mesa/drivers/dri/mga/mga_xmesa.h

@@ -0,0 +1,143 @@
+/*
+ * Copyright 2000-2001 VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mga_xmesa.h,v 1.12 2002/12/16 16:18:52 dawes Exp $ */
+
+#ifndef _MGA_INIT_H_
+#define _MGA_INIT_H_
+
+#include <sys/time.h>
+#include <linux/types.h>
+#include "dri_util.h"
+#include "mtypes.h"
+#include "mgaregs.h"
+#include "mga_common.h"
+
+typedef struct mga_screen_private_s {
+
+   int chipset;
+   int width;
+   int height;
+   int mem;
+
+   int cpp;			/* for front and back buffers */
+   GLint agpMode;
+   unsigned int irq;		/* IRQ number (0 means none) */
+
+   unsigned int mAccess;
+
+   unsigned int frontOffset;
+   unsigned int frontPitch;
+   unsigned int backOffset;
+   unsigned int backPitch;
+
+   unsigned int depthOffset;
+   unsigned int depthPitch;
+   int depthCpp;
+
+   unsigned int dmaOffset;
+
+   unsigned int textureOffset[DRM_MGA_NR_TEX_HEAPS];
+   unsigned int textureSize[DRM_MGA_NR_TEX_HEAPS];
+   int logTextureGranularity[DRM_MGA_NR_TEX_HEAPS];
+   char *texVirtual[DRM_MGA_NR_TEX_HEAPS];
+
+
+   __DRIscreenPrivate *sPriv;
+   drmBufMapPtr  bufs;
+
+   drmRegion mmio;
+   drmRegion status;
+   drmRegion primary;
+   drmRegion buffers;
+   unsigned int sarea_priv_offset;
+} mgaScreenPrivate;
+
+
+#include "mgacontext.h"
+
+extern void mgaGetLock( mgaContextPtr mmesa, GLuint flags );
+extern void mgaEmitHwStateLocked( mgaContextPtr mmesa );
+extern void mgaEmitScissorValues( mgaContextPtr mmesa, int box_nr, int emit );
+
+#define GET_DISPATCH_AGE( mmesa ) mmesa->sarea->last_dispatch
+#define GET_ENQUEUE_AGE( mmesa ) mmesa->sarea->last_enqueue
+
+
+
+/* Lock the hardware and validate our state.
+ */
+#define LOCK_HARDWARE( mmesa )					\
+  do {								\
+    char __ret=0;						\
+    DRM_CAS(mmesa->driHwLock, mmesa->hHWContext,		\
+	    (DRM_LOCK_HELD|mmesa->hHWContext), __ret);		\
+    if (__ret)							\
+        mgaGetLock( mmesa, 0 );					\
+  } while (0)
+
+
+/*
+ */
+#define LOCK_HARDWARE_QUIESCENT( mmesa ) do {	                        \
+	LOCK_HARDWARE( mmesa );			                        \
+	UPDATE_LOCK( mmesa, DRM_LOCK_QUIESCENT | DRM_LOCK_FLUSH );	\
+} while (0)
+
+
+/* Unlock the hardware using the global current context
+ */
+#define UNLOCK_HARDWARE(mmesa) 				\
+    DRM_UNLOCK(mmesa->driFd, mmesa->driHwLock, mmesa->hHWContext);
+
+
+/* Freshen our snapshot of the drawables
+ */
+#define REFRESH_DRAWABLE_INFO( mmesa )		\
+do {						\
+   LOCK_HARDWARE( mmesa );			\
+   mmesa->lastX = mmesa->drawX; 		\
+   mmesa->lastY = mmesa->drawY; 		\
+   UNLOCK_HARDWARE( mmesa );			\
+} while (0)
+
+
+#define GET_DRAWABLE_LOCK( mmesa ) while(0)
+#define RELEASE_DRAWABLE_LOCK( mmesa ) while(0)
+
+
+/* The 2D driver macros are busted -- we can't use them here as they
+ * rely on the 2D driver data structures rather than taking an explicit
+ * base address.
+ */
+#define MGA_BASE( reg )		((unsigned long)(mmesa->mgaScreen->mmio.map))
+#define MGA_ADDR( reg )		(MGA_BASE(reg) + reg)
+
+#define MGA_DEREF( reg )	*(volatile __u32 *)MGA_ADDR( reg )
+#define MGA_READ( reg )		MGA_DEREF( reg )
+#define MGA_WRITE( reg, val )	do { MGA_DEREF( reg ) = val; } while (0)
+
+#endif

src/mesa/drivers/dri/mga/mgabuffers.c

@@ -0,0 +1,291 @@
+/*
+ * Copyright 2000-2001 VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgabuffers.c,v 1.13 2002/11/05 17:46:08 tsi Exp $ */
+
+#include <stdio.h>
+#include "mgacontext.h"
+#include "mgabuffers.h"
+#include "mgastate.h"
+#include "mgaioctl.h"
+#include "mgatris.h"
+
+static void mgaXMesaSetFrontClipRects( mgaContextPtr mmesa )
+{
+   __DRIdrawablePrivate *driDrawable = mmesa->driDrawable;
+
+/*   fprintf( stderr, "%s\n", __FUNCTION__ );*/
+
+   if (driDrawable->numClipRects == 0) {
+       static XF86DRIClipRectRec zeroareacliprect = {0,0,0,0};
+       mmesa->numClipRects = 1;
+       mmesa->pClipRects = &zeroareacliprect;
+   } else {
+       mmesa->numClipRects = driDrawable->numClipRects;
+       mmesa->pClipRects = driDrawable->pClipRects;
+   }
+   mmesa->drawX = driDrawable->x;
+   mmesa->drawY = driDrawable->y;
+
+   mmesa->setup.dstorg = mmesa->drawOffset;
+   mmesa->dirty |= MGA_UPLOAD_CONTEXT | MGA_UPLOAD_CLIPRECTS;
+}
+
+
+static void mgaXMesaSetBackClipRects( mgaContextPtr mmesa )
+{
+   __DRIdrawablePrivate *driDrawable = mmesa->driDrawable;
+
+/*   fprintf( stderr, "%s\n", __FUNCTION__ );*/
+
+   if (driDrawable->numBackClipRects == 0)
+   {
+      if (driDrawable->numClipRects == 0) {
+	  static XF86DRIClipRectRec zeroareacliprect = {0,0,0,0};
+	  mmesa->numClipRects = 1;
+	  mmesa->pClipRects = &zeroareacliprect;
+      } else {
+	  mmesa->numClipRects = driDrawable->numClipRects;
+	  mmesa->pClipRects = driDrawable->pClipRects;
+      }
+      mmesa->drawX = driDrawable->x;
+      mmesa->drawY = driDrawable->y;
+   } else {
+      mmesa->numClipRects = driDrawable->numBackClipRects;
+      mmesa->pClipRects = driDrawable->pBackClipRects;
+      mmesa->drawX = driDrawable->backX;
+      mmesa->drawY = driDrawable->backY;
+   }
+
+   mmesa->setup.dstorg = mmesa->drawOffset;
+   mmesa->dirty |= MGA_UPLOAD_CONTEXT | MGA_UPLOAD_CLIPRECTS;
+}
+
+
+
+#if 0
+static void mgaUpdateRectsFromSarea( mgaContextPtr mmesa )
+{
+   __DRIdrawablePrivate *driDrawable = mmesa->driDrawable;
+   __DRIscreenPrivate *driScreen = mmesa->driScreen;
+   MGASAREAPrivPtr sarea = mmesa->sarea;
+   int i = 0, top = 0;
+
+
+   if (sarea->exported_buffers & MGA_BACK) {
+
+      driDrawable->numBackClipRects = sarea->exported_nback;
+      driDrawable->pBackClipRects = mmesa->tmp_boxes[0];
+
+      top = sarea->exported_nback;
+      for (i = 0 ; i < top ; i++)
+	 driDrawable->pBackClipRects[i] =
+	    *(XF86DRIClipRectPtr)&(sarea->exported_boxes[i]);
+   }
+
+
+   if (sarea->exported_buffers & MGA_FRONT)
+   {
+      int start = top;
+
+      driDrawable->numClipRects = sarea->exported_nfront;
+      driDrawable->pClipRects = mmesa->tmp_boxes[1];
+
+      top += sarea->exported_nfront;
+      for ( ; i < top ; i++)
+	 driDrawable->pClipRects[i-start] =
+	    *(XF86DRIClipRectPtr)&(sarea->exported_boxes[i]);
+
+   }
+
+
+
+   driDrawable->index = sarea->exported_index;
+   driDrawable->lastStamp = sarea->exported_stamp;
+   driDrawable->x = sarea->exported_front_x;
+   driDrawable->y = sarea->exported_front_y;
+   driDrawable->backX = sarea->exported_back_x;
+   driDrawable->backY = sarea->exported_back_y;
+   driDrawable->w = sarea->exported_w;
+   driDrawable->h = sarea->exported_h;
+   driDrawable->pStamp =
+      &(driScreen->pSAREA->drawableTable[driDrawable->index].stamp);
+
+   mmesa->dirty_cliprects = (MGA_FRONT|MGA_BACK) & ~(sarea->exported_buffers);
+}
+#endif
+
+#if 0
+static void printSareaRects( mgaContextPtr mmesa )
+{
+   __DRIscreenPrivate *driScreen = mmesa->driScreen;
+   MGASAREAPrivPtr sarea = mmesa->sarea;
+   int i;
+
+   fprintf(stderr, "sarea->exported: %d\n", sarea->exported_drawable);
+   fprintf(stderr, "sarea->exported_index: %d\n", sarea->exported_index);
+   fprintf(stderr, "sarea->exported_stamp: %d\n", sarea->exported_stamp);
+   fprintf(stderr, "sarea->exported_front_x: %d\n", sarea->exported_front_x);
+   fprintf(stderr, "sarea->exported_front_y: %d\n", sarea->exported_front_y);
+   fprintf(stderr, "sarea->exported_back_x: %d\n", sarea->exported_back_x);
+   fprintf(stderr, "sarea->exported_back_y: %d\n", sarea->exported_back_y);
+   fprintf(stderr, "sarea->exported_w: %d\n", sarea->exported_w);
+   fprintf(stderr, "sarea->exported_h: %d\n", sarea->exported_h);
+   fprintf(stderr, "sarea->exported_buffers: %d\n", sarea->exported_buffers);
+   fprintf(stderr, "sarea->exported_nfront: %d\n", sarea->exported_nfront);
+   fprintf(stderr, "sarea->exported_nback: %d\n", sarea->exported_nback);
+
+   i = 0;
+   if (sarea->exported_buffers & MGA_BACK)
+      for ( ; i < sarea->exported_nback ; i++)
+	 fprintf(stderr, "back %d: %d,%d-%d,%d\n", i,
+		 sarea->exported_boxes[i].x1, sarea->exported_boxes[i].y1,
+		 sarea->exported_boxes[i].x2, sarea->exported_boxes[i].y2);
+
+   if (sarea->exported_buffers & MGA_FRONT) {
+      int start = i;
+      int top = i + sarea->exported_nfront;
+      for ( ; i < top ; i++)
+	 fprintf(stderr, "front %d: %d,%d-%d,%d\n",
+		 i - start,
+		 sarea->exported_boxes[i].x1, sarea->exported_boxes[i].y1,
+		 sarea->exported_boxes[i].x2, sarea->exported_boxes[i].y2);
+   }
+
+   fprintf(stderr, "drawableTable[%d].stamp: %d\n",
+	   sarea->exported_index,
+	   driScreen->pSAREA->drawableTable[sarea->exported_index].stamp);
+}
+
+static void printMmesaRects( mgaContextPtr mmesa )
+{
+   __DRIscreenPrivate *driScreen = mmesa->driScreen;
+   __DRIdrawablePrivate *driDrawable = mmesa->driDrawable;
+   int nr = mmesa->numClipRects;
+   int i;
+
+   fprintf(stderr, "driDrawable->draw: %ld\n", driDrawable->draw);
+   fprintf(stderr, "driDrawable->index: %d\n", driDrawable->index);
+   fprintf(stderr, "driDrawable->lastStamp: %d\n", driDrawable->lastStamp);
+   fprintf(stderr, "mmesa->drawX: %d\n", mmesa->drawX);
+   fprintf(stderr, "mmesa->drawY: %d\n", mmesa->drawY);
+   fprintf(stderr, "driDrawable->w: %d\n", driDrawable->w);
+   fprintf(stderr, "driDrawable->h: %d\n", driDrawable->h);
+
+   for (i = 0 ; i < nr ; i++)
+      fprintf(stderr, "box %d: %d,%d-%d,%d\n", i,
+	      mmesa->pClipRects[i].x1, mmesa->pClipRects[i].y1,
+	      mmesa->pClipRects[i].x2, mmesa->pClipRects[i].y2);
+
+   fprintf(stderr, "mmesa->draw_buffer: %d\n", mmesa->draw_buffer);
+   fprintf(stderr, "drawableTable[%d].stamp: %d\n",
+	   driDrawable->index,
+	   driScreen->pSAREA->drawableTable[driDrawable->index].stamp);
+}
+#endif
+
+
+
+void mgaUpdateRects( mgaContextPtr mmesa, GLuint buffers )
+{
+   __DRIdrawablePrivate *driDrawable = mmesa->driDrawable;
+   MGASAREAPrivPtr sarea = mmesa->sarea;
+
+/*   fprintf(stderr, "%s\n", __FUNCTION__);*/
+
+   DRI_VALIDATE_DRAWABLE_INFO(driScreen, driDrawable); 
+   mmesa->dirty_cliprects = 0;	
+
+   if (mmesa->draw_buffer == MGA_FRONT)
+      mgaXMesaSetFrontClipRects( mmesa );
+   else
+      mgaXMesaSetBackClipRects( mmesa );
+
+#if 0
+   printMmesaRects(mmesa); 
+#endif
+
+   sarea->req_draw_buffer = mmesa->draw_buffer;
+
+   mgaUpdateClipping( mmesa->glCtx );
+   mgaCalcViewport( mmesa->glCtx );
+
+   mmesa->dirty |= MGA_UPLOAD_CLIPRECTS;
+}
+
+
+void mgaDDSetReadBuffer(GLcontext *ctx, GLenum mode )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+
+   if (mode == GL_FRONT_LEFT) 
+   {
+      mmesa->readOffset = mmesa->mgaScreen->frontOffset;
+      mmesa->read_buffer = MGA_FRONT;
+   } 
+   else 
+   {
+      mmesa->readOffset = mmesa->mgaScreen->backOffset;
+      mmesa->read_buffer = MGA_BACK;
+   }
+}
+
+void mgaDDSetDrawBuffer(GLcontext *ctx, GLenum mode )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+
+   FLUSH_BATCH( MGA_CONTEXT(ctx) );
+
+/*   fprintf( stderr, "%s %d\n", __FUNCTION__, mode);*/
+
+   /*
+    * _DrawDestMask is easier to cope with than <mode>.
+    */
+   switch ( ctx->Color._DrawDestMask ) {
+     case FRONT_LEFT_BIT:
+       mmesa->drawOffset = mmesa->mgaScreen->frontOffset;
+       mmesa->readOffset = mmesa->mgaScreen->frontOffset;
+       mmesa->setup.dstorg = mmesa->mgaScreen->frontOffset;
+       mmesa->dirty |= MGA_UPLOAD_CONTEXT;
+       mmesa->draw_buffer = MGA_FRONT;
+       mgaXMesaSetFrontClipRects( mmesa );
+       FALLBACK( ctx, MGA_FALLBACK_DRAW_BUFFER, GL_FALSE );
+       break;
+     case BACK_LEFT_BIT:
+       mmesa->drawOffset = mmesa->mgaScreen->backOffset;
+       mmesa->readOffset = mmesa->mgaScreen->backOffset;
+       mmesa->setup.dstorg = mmesa->mgaScreen->backOffset;
+       mmesa->draw_buffer = MGA_BACK;
+       mmesa->dirty |= MGA_UPLOAD_CONTEXT;
+       mgaXMesaSetBackClipRects( mmesa );
+       FALLBACK( ctx, MGA_FALLBACK_DRAW_BUFFER, GL_FALSE );
+       break;
+     default:
+       FALLBACK( ctx, MGA_FALLBACK_DRAW_BUFFER, GL_TRUE );
+       break;
+   }
+}
+

src/mesa/drivers/dri/mga/mgabuffers.h

@@ -0,0 +1,37 @@
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgabuffers.h,v 1.7 2002/10/30 12:51:35 alanh Exp $ */
+/*
+ * Copyright 2000-2001 VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#ifndef MGA_BUFFERS_H
+#define MGA_BUFFERS_H
+
+void mgaDDSetDrawBuffer(GLcontext *ctx, GLenum mode );
+void mgaDDSetReadBuffer(GLcontext *ctx, GLenum mode );
+
+void mgaUpdateRects( mgaContextPtr mmesa, GLuint buffers );
+
+#endif

src/mesa/drivers/dri/mga/mgacontext.h

@@ -0,0 +1,309 @@
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgacontext.h,v 1.7 2002/12/16 16:18:52 dawes Exp $*/
+/*
+ * Copyright 2000-2001 VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#ifndef MGALIB_INC
+#define MGALIB_INC
+
+/*#include <X11/Xlibint.h>*/
+#include "dri_util.h"
+#include "mtypes.h"
+#include "xf86drm.h"
+#include "mm.h"
+/*#include "mem.h"*/
+#include "mga_sarea.h"
+
+
+#define MGA_SET_FIELD(reg,mask,val)  reg = ((reg) & (mask)) | ((val) & ~(mask))
+#define MGA_FIELD(field,val) (((val) << (field ## _SHIFT)) & ~(field ## _MASK))
+#define MGA_GET_FIELD(field, val) ((val & ~(field ## _MASK)) >> (field ## _SHIFT))
+
+#define MGA_IS_G200(mmesa) (mmesa->mgaScreen->chipset == MGA_CARD_TYPE_G200)
+#define MGA_IS_G400(mmesa) (mmesa->mgaScreen->chipset == MGA_CARD_TYPE_G400)
+
+
+/* SoftwareFallback
+ *    - texture env GL_BLEND -- can be fixed
+ *    - 1D and 3D textures
+ *    - incomplete textures
+ *    - GL_DEPTH_FUNC == GL_NEVER not in h/w
+ */
+#define MGA_FALLBACK_TEXTURE        0x1
+#define MGA_FALLBACK_DRAW_BUFFER    0x2
+#define MGA_FALLBACK_READ_BUFFER    0x4
+#define MGA_FALLBACK_LOGICOP        0x8
+#define MGA_FALLBACK_RENDERMODE     0x10
+#define MGA_FALLBACK_STENCIL        0x20
+#define MGA_FALLBACK_DEPTH          0x40
+
+
+/* For mgaCtx->new_state.
+ */
+#define MGA_NEW_DEPTH   0x1
+#define MGA_NEW_ALPHA   0x2
+#define MGA_NEW_CLIP    0x8
+#define MGA_NEW_TEXTURE 0x20
+#define MGA_NEW_CULL    0x40
+#define MGA_NEW_WARP    0x80
+#define MGA_NEW_STENCIL 0x100
+#define MGA_NEW_CONTEXT 0x200
+
+/* Use the templated vertex formats:
+ */
+#define TAG(x) mga##x
+#include "tnl_dd/t_dd_vertex.h"
+#undef TAG
+
+typedef struct mga_context_t mgaContext;
+typedef struct mga_context_t *mgaContextPtr;
+
+typedef void (*mga_tri_func)( mgaContextPtr, mgaVertex *, mgaVertex *,
+			       mgaVertex * );
+typedef void (*mga_line_func)( mgaContextPtr, mgaVertex *, mgaVertex * );
+typedef void (*mga_point_func)( mgaContextPtr, mgaVertex * );
+
+
+
+/* Reasons why the GL_BLEND fallback mightn't work:
+ */
+#define MGA_BLEND_ENV_COLOR 0x1
+#define MGA_BLEND_MULTITEX  0x2
+
+struct mga_texture_object_s;
+struct mga_screen_private_s;
+
+#define MGA_TEX_MAXLEVELS 5
+
+typedef struct mga_texture_object_s
+{
+   struct mga_texture_object_s *next;
+   struct mga_texture_object_s *prev;
+   struct gl_texture_object *tObj;
+   struct mga_context_t *ctx;
+   PMemBlock	MemBlock;
+   GLuint		offsets[MGA_TEX_MAXLEVELS];
+   int             lastLevel;
+   GLuint         dirty_images;
+   GLuint		totalSize;
+   int		texelBytes;
+   GLuint 	age;
+   int             bound;
+   int             heap;	/* agp or card */
+
+   mga_texture_regs_t setup;
+} mgaTextureObject_t;
+
+struct mga_context_t {
+
+   GLcontext *glCtx;
+   unsigned int lastStamp;	/* fullscreen breaks dpriv->laststamp,
+				 * need to shadow it here. */
+
+   /* Bookkeeping for texturing
+    */
+   int lastTexHeap;
+   struct mga_texture_object_s TexObjList[MGA_NR_TEX_HEAPS];
+   struct mga_texture_object_s SwappedOut;
+   struct mga_texture_object_s *CurrentTexObj[2];
+   memHeap_t *texHeap[MGA_NR_TEX_HEAPS];
+   int c_texupload;
+   int c_texusage;
+   int tex_thrash;
+
+
+   /* Map GL texture units onto hardware.
+    */
+   GLuint tmu_source[2];
+   
+   GLboolean default32BitTextures;
+
+   /* Manage fallbacks
+    */
+   GLuint Fallback;  
+
+
+   /* Temporaries for translating away float colors:
+    */
+   struct gl_client_array UbyteColor;
+   struct gl_client_array UbyteSecondaryColor;
+
+   /* Support for limited GL_BLEND fallback
+    */
+   unsigned int blend_flags;
+   unsigned int envcolor;
+
+   /* Rasterization state 
+    */
+   GLuint SetupNewInputs;
+   GLuint SetupIndex;
+   GLuint RenderIndex;
+   
+   GLuint hw_primitive;
+   GLenum raster_primitive;
+   GLenum render_primitive;
+
+   char *verts;
+   GLint vertex_stride_shift;
+   GLuint vertex_format;		
+   GLuint vertex_size;
+
+   /* Fallback rasterization functions 
+    */
+   mga_point_func draw_point;
+   mga_line_func draw_line;
+   mga_tri_func draw_tri;
+
+
+   /* Manage driver and hardware state
+    */
+   GLuint        new_gl_state; 
+   GLuint        new_state; 
+   GLuint        dirty;
+
+   mga_context_regs_t setup;
+
+   GLuint        ClearColor;
+   GLuint        ClearDepth;
+   GLuint        poly_stipple;
+   GLfloat       depth_scale;
+
+   GLuint        depth_clear_mask;
+   GLuint        stencil_clear_mask;
+   GLuint        hw_stencil;
+   GLuint        haveHwStipple;
+   GLfloat       hw_viewport[16];
+
+   /* Dma buffers
+    */
+   drmBufPtr  vertex_dma_buffer;
+   drmBufPtr  iload_buffer;
+
+   /* VBI
+    */
+   GLuint vbl_seq;
+
+   /* Drawable, cliprect and scissor information
+    */
+   int dirty_cliprects;		/* which sets of cliprects are uptodate? */
+   int draw_buffer;		/* which buffer are we rendering to */
+   unsigned int drawOffset;		/* draw buffer address in  space */
+   int read_buffer;
+   int readOffset;
+   int drawX, drawY;		/* origin of drawable in draw buffer */
+   int lastX, lastY;		/* detect DSTORG bug */
+   GLuint numClipRects;		/* cliprects for the draw buffer */
+   XF86DRIClipRectPtr pClipRects;
+   XF86DRIClipRectRec draw_rect;
+   XF86DRIClipRectRec scissor_rect;
+   int scissor;
+
+   XF86DRIClipRectRec tmp_boxes[2][MGA_NR_SAREA_CLIPRECTS];
+
+
+   /* Texture aging and DMA based aging.
+    */
+   unsigned int texAge[MGA_NR_TEX_HEAPS];/* texture LRU age  */
+   unsigned int dirtyAge;		/* buffer age for synchronization */
+
+   GLuint primary_offset;
+
+   /* Mirrors of some DRI state.
+    */
+   GLframebuffer *glBuffer;
+   drmContext hHWContext;
+   drmLock *driHwLock;
+   int driFd;
+   __DRIdrawablePrivate *driDrawable;
+   __DRIscreenPrivate *driScreen;
+   struct mga_screen_private_s *mgaScreen;
+   MGASAREAPrivPtr sarea;
+};
+
+#define MGA_CONTEXT(ctx) ((mgaContextPtr)(ctx->DriverCtx))
+
+#define MGAPACKCOLOR555(r,g,b,a) \
+  ((((r) & 0xf8) << 7) | (((g) & 0xf8) << 2) | (((b) & 0xf8) >> 3) | \
+    ((a) ? 0x8000 : 0))
+
+#define MGAPACKCOLOR565(r,g,b) \
+  ((((r) & 0xf8) << 8) | (((g) & 0xfc) << 3) | (((b) & 0xf8) >> 3))
+
+#define MGAPACKCOLOR88(l, a) \
+  (((l) << 8) | (a))
+
+#define MGAPACKCOLOR888(r,g,b) \
+  (((r) << 16) | ((g) << 8) | (b))
+
+#define MGAPACKCOLOR8888(r,g,b,a) \
+  (((a) << 24) | ((r) << 16) | ((g) << 8) | (b))
+
+#define MGAPACKCOLOR4444(r,g,b,a) \
+  ((((a) & 0xf0) << 8) | (((r) & 0xf0) << 4) | ((g) & 0xf0) | ((b) >> 4))
+
+
+#define MGA_DEBUG 0
+#ifndef MGA_DEBUG
+extern int MGA_DEBUG;
+#endif
+
+#define DEBUG_ALWAYS_SYNC	0x1
+#define DEBUG_VERBOSE_MSG	0x2
+#define DEBUG_VERBOSE_LRU	0x4
+#define DEBUG_VERBOSE_DRI	0x8
+#define DEBUG_VERBOSE_IOCTL	0x10
+#define DEBUG_VERBOSE_2D	0x20
+#define DEBUG_VERBOSE_FALLBACK	0x40
+
+static __inline__ GLuint mgaPackColor(GLuint cpp,
+				      GLubyte r, GLubyte g,
+				      GLubyte b, GLubyte a)
+{
+  switch (cpp) {
+  case 2:
+    return MGAPACKCOLOR565(r,g,b);
+  case 4:
+    return MGAPACKCOLOR8888(r,g,b,a);
+  default:
+    return 0;
+  }
+}
+
+
+/*
+ * Subpixel offsets for window coordinates:
+ */
+#define SUBPIXEL_X (-0.5F)
+#define SUBPIXEL_Y (-0.5F + 0.125)
+
+
+#define MGA_WA_TRIANGLES     0x18000000
+#define MGA_WA_TRISTRIP_T0   0x02010200
+#define MGA_WA_TRIFAN_T0     0x01000408
+#define MGA_WA_TRISTRIP_T0T1 0x02010400
+#define MGA_WA_TRIFAN_T0T1   0x01000810
+
+#endif

src/mesa/drivers/dri/mga/mgadd.c

@@ -0,0 +1,171 @@
+/*
+ * Copyright 2000-2001 VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgadd.c,v 1.14 2002/10/30 12:51:35 alanh Exp $ */
+
+
+#include "mtypes.h"
+
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "mm.h"
+#include "mgacontext.h"
+#include "mgadd.h"
+#include "mgastate.h"
+#include "mgaspan.h"
+#include "mgatex.h"
+#include "mgatris.h"
+#include "mgavb.h"
+#include "mga_xmesa.h"
+#include "extensions.h"
+#if defined(USE_X86_ASM)
+#include "X86/common_x86_asm.h"
+#endif
+
+#define MGA_DATE	"20020221"
+
+
+/***************************************
+ * Mesa's Driver Functions
+ ***************************************/
+
+
+static const GLubyte *mgaDDGetString( GLcontext *ctx, GLenum name )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT( ctx );
+   static char buffer[128];
+
+   switch ( name ) {
+   case GL_VENDOR:
+      return (GLubyte *) "VA Linux Systems Inc.";
+
+   case GL_RENDERER:
+      sprintf( buffer, "Mesa DRI %s " MGA_DATE,
+	       MGA_IS_G400(mmesa) ? "G400" :
+	       MGA_IS_G200(mmesa) ? "G200" : "MGA" );
+
+      /* Append any AGP-specific information.
+       */
+      switch ( mmesa->mgaScreen->agpMode ) {
+      case 1:
+	 strncat( buffer, " AGP 1x", 7 );
+	 break;
+      case 2:
+	 strncat( buffer, " AGP 2x", 7 );
+	 break;
+      case 4:
+	 strncat( buffer, " AGP 4x", 7 );
+	 break;
+      }
+
+      /* Append any CPU-specific information.
+       */
+#ifdef USE_X86_ASM
+      if ( _mesa_x86_cpu_features ) {
+	 strncat( buffer, " x86", 4 );
+      }
+#endif
+#ifdef USE_MMX_ASM
+      if ( cpu_has_mmx ) {
+	 strncat( buffer, "/MMX", 4 );
+      }
+#endif
+#ifdef USE_3DNOW_ASM
+      if ( cpu_has_3dnow ) {
+	 strncat( buffer, "/3DNow!", 7 );
+      }
+#endif
+#ifdef USE_SSE_ASM
+      if ( cpu_has_xmm ) {
+	 strncat( buffer, "/SSE", 4 );
+      }
+#endif
+      return (GLubyte *)buffer;
+
+   default:
+      return NULL;
+   }
+}
+
+
+
+static void mgaBufferSize(GLframebuffer *buffer, GLuint *width, GLuint *height)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+
+   /* Need to lock to make sure the driDrawable is uptodate.  This
+    * information is used to resize Mesa's software buffers, so it has
+    * to be correct.
+    */
+   LOCK_HARDWARE( mmesa );
+   *width = mmesa->driDrawable->w;
+   *height = mmesa->driDrawable->h;
+   UNLOCK_HARDWARE( mmesa );
+}
+
+void mgaDDExtensionsInit( GLcontext *ctx )
+{
+   /* paletted_textures currently doesn't work, but we could fix them later */
+   /*
+   _mesa_enable_extension( ctx, "GL_EXT_shared_texture_palette" );
+   _mesa_enable_extension( ctx, "GL_EXT_paletted_texture" );
+   */
+
+   _mesa_enable_extension( ctx, "GL_ARB_texture_compression" );
+   _mesa_enable_extension( ctx, "GL_ARB_multisample" );
+
+   _mesa_enable_extension( ctx, "GL_SGIS_generate_mipmap" );
+
+   /* Turn on multitexture and texenv_add for the G400.
+    */
+   if (MGA_IS_G400(MGA_CONTEXT(ctx))) {
+      _mesa_enable_extension( ctx, "GL_ARB_multitexture" );
+      _mesa_enable_extension( ctx, "GL_ARB_texture_env_add" );
+
+      _mesa_enable_extension( ctx, "GL_EXT_texture_env_add" );
+
+#if defined (MESA_packed_depth_stencil)
+      _mesa_enable_extension( ctx, "GL_MESA_packed_depth_stencil" );
+#endif
+
+#if defined (MESA_experimetal_agp_allocator)
+      if (!getenv("MGA_DISABLE_AGP_ALLOCATOR"))  
+	 _mesa_enable_extension( ctx, "GL_MESA_experimental_agp_allocator" );
+#endif
+   }
+}
+
+
+
+void mgaDDInitDriverFuncs( GLcontext *ctx )
+{
+   ctx->Driver.GetBufferSize = mgaBufferSize;
+   ctx->Driver.ResizeBuffers = _swrast_alloc_buffers;
+   ctx->Driver.GetString = mgaDDGetString;
+}

src/mesa/drivers/dri/mga/mgadd.h

@@ -0,0 +1,37 @@
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgadd.h,v 1.3 2002/10/30 12:51:35 alanh Exp $ */
+/*
+ * Copyright 2000-2001 VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#ifndef MGADD_INC
+#define MGADD_INC
+
+#include "context.h"
+
+void mgaDDInitDriverFuncs( GLcontext *ctx );
+void mgaDDExtensionsInit( GLcontext *ctx );
+
+#endif

src/mesa/drivers/dri/mga/mgaioctl.c

@@ -0,0 +1,693 @@
+/*
+ * Copyright 2000-2001 VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ *    Gareth Hughes <gareth@valinux.com>
+ */
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgaioctl.c,v 1.16 2002/12/16 16:18:52 dawes Exp $ */
+
+#include <stdio.h>
+#include <errno.h>
+
+#include "mtypes.h"
+#include "macros.h"
+#include "dd.h"
+#include "swrast/swrast.h"
+
+#include "mm.h"
+#include "mgacontext.h"
+#include "mgadd.h"
+#include "mgastate.h"
+#include "mgatex.h"
+#include "mgavb.h"
+#include "mgaioctl.h"
+#include "mgatris.h"
+#include "mgabuffers.h"
+
+
+#include "xf86drm.h"
+#include "mga_common.h"
+
+static void mga_iload_dma_ioctl(mgaContextPtr mmesa,
+				unsigned long dest,
+				int length)
+{
+   drmBufPtr buf = mmesa->iload_buffer;
+   drmMGAIload iload;
+   int ret, i;
+
+   if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
+      fprintf(stderr, "DRM_IOCTL_MGA_ILOAD idx %d dst %x length %d\n",
+	      buf->idx, (int) dest, length);
+
+   iload.idx = buf->idx;
+   iload.dstorg = dest;
+   iload.length = length;
+
+   i = 0;
+   do {
+      ret = drmCommandWrite( mmesa->driFd, DRM_MGA_ILOAD, 
+                             &iload, sizeof(drmMGAIload) );
+   } while ( ret == -EBUSY && i++ < DRM_MGA_IDLE_RETRY );
+
+   if ( ret < 0 ) {
+      printf("send iload retcode = %d\n", ret);
+      exit(1);
+   }
+
+   mmesa->iload_buffer = 0;
+
+   if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
+      fprintf(stderr, "finished iload dma put\n");
+
+}
+
+drmBufPtr mga_get_buffer_ioctl( mgaContextPtr mmesa )
+{
+   int idx = 0;
+   int size = 0;
+   drmDMAReq dma;
+   int retcode;
+   drmBufPtr buf;
+
+   if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
+      fprintf(stderr,  "Getting dma buffer\n");
+
+   dma.context = mmesa->hHWContext;
+   dma.send_count = 0;
+   dma.send_list = NULL;
+   dma.send_sizes = NULL;
+   dma.flags = 0;
+   dma.request_count = 1;
+   dma.request_size = MGA_BUFFER_SIZE;
+   dma.request_list = &idx;
+   dma.request_sizes = &size;
+   dma.granted_count = 0;
+
+
+   if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
+      fprintf(stderr, "drmDMA (get) ctx %d count %d size 0x%x\n",
+	   dma.context, dma.request_count,
+	   dma.request_size);
+
+   while (1) {
+      retcode = drmDMA(mmesa->driFd, &dma);
+
+      if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
+	 fprintf(stderr, "retcode %d sz %d idx %d count %d\n",
+		 retcode,
+		 dma.request_sizes[0],
+		 dma.request_list[0],
+		 dma.granted_count);
+
+      if (retcode == 0 &&
+	  dma.request_sizes[0] &&
+	  dma.granted_count)
+	 break;
+
+      if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
+	 fprintf(stderr, "\n\nflush");
+
+      UPDATE_LOCK( mmesa, DRM_LOCK_FLUSH | DRM_LOCK_QUIESCENT );
+   }
+
+   buf = &(mmesa->mgaScreen->bufs->list[idx]);
+   buf->used = 0;
+
+   if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
+      fprintf(stderr,
+	   "drmDMA (get) returns size[0] 0x%x idx[0] %d\n"
+	   "dma_buffer now: buf idx: %d size: %d used: %d addr %p\n",
+	   dma.request_sizes[0], dma.request_list[0],
+	   buf->idx, buf->total,
+	   buf->used, buf->address);
+
+   if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
+      fprintf(stderr, "finished getbuffer\n");
+
+   return buf;
+}
+
+
+
+
+static void
+mgaDDClear( GLcontext *ctx, GLbitfield mask, GLboolean all,
+            GLint cx, GLint cy, GLint cw, GLint ch )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+   __DRIdrawablePrivate *dPriv = mmesa->driDrawable;
+   GLuint flags = 0;
+   GLuint clear_color = mmesa->ClearColor;
+   GLuint clear_depth = 0;
+   GLuint color_mask = 0;
+   GLuint depth_mask = 0;
+   int ret;
+   int i;
+   static int nrclears;
+   drmMGAClearRec clear;
+
+   FLUSH_BATCH( mmesa );
+
+   if ( mask & DD_FRONT_LEFT_BIT ) {
+      flags |= MGA_FRONT;
+      color_mask = mmesa->setup.plnwt;
+      mask &= ~DD_FRONT_LEFT_BIT;
+   }
+
+   if ( mask & DD_BACK_LEFT_BIT ) {
+      flags |= MGA_BACK;
+      color_mask = mmesa->setup.plnwt;
+      mask &= ~DD_BACK_LEFT_BIT;
+   }
+
+   if ( (mask & DD_DEPTH_BIT) && ctx->Depth.Mask ) {
+      flags |= MGA_DEPTH;
+      clear_depth = (mmesa->ClearDepth & mmesa->depth_clear_mask);
+      depth_mask |= mmesa->depth_clear_mask;
+      mask &= ~DD_DEPTH_BIT;
+   }
+
+   if ( (mask & DD_STENCIL_BIT) && mmesa->hw_stencil ) {
+      flags |= MGA_DEPTH;
+      clear_depth |= (ctx->Stencil.Clear & mmesa->stencil_clear_mask);
+      depth_mask |= mmesa->stencil_clear_mask;
+      mask &= ~DD_STENCIL_BIT;
+   }
+
+   if ( flags ) {
+      LOCK_HARDWARE( mmesa );
+
+      if ( mmesa->dirty_cliprects )
+	 mgaUpdateRects( mmesa, (MGA_FRONT | MGA_BACK) );
+
+      /* flip top to bottom */
+      cy = dPriv->h-cy-ch;
+      cx += mmesa->drawX;
+      cy += mmesa->drawY;
+
+      if ( MGA_DEBUG & DEBUG_VERBOSE_IOCTL )
+	 fprintf( stderr, "Clear, bufs %x nbox %d\n",
+		  (int)flags, (int)mmesa->numClipRects );
+
+      for (i = 0 ; i < mmesa->numClipRects ; )
+      {
+	 int nr = MIN2(i + MGA_NR_SAREA_CLIPRECTS, mmesa->numClipRects);
+	 XF86DRIClipRectPtr box = mmesa->pClipRects;
+	 XF86DRIClipRectPtr b = mmesa->sarea->boxes;
+	 int n = 0;
+
+	 if (!all) {
+	    for ( ; i < nr ; i++) {
+	       GLint x = box[i].x1;
+	       GLint y = box[i].y1;
+	       GLint w = box[i].x2 - x;
+	       GLint h = box[i].y2 - y;
+
+	       if (x < cx) w -= cx - x, x = cx;
+	       if (y < cy) h -= cy - y, y = cy;
+	       if (x + w > cx + cw) w = cx + cw - x;
+	       if (y + h > cy + ch) h = cy + ch - y;
+	       if (w <= 0) continue;
+	       if (h <= 0) continue;
+
+	       b->x1 = x;
+	       b->y1 = y;
+	       b->x2 = x + w;
+	       b->y2 = y + h;
+	       b++;
+	       n++;
+	    }
+	 } else {
+	    for ( ; i < nr ; i++) {
+	       *b++ = *(XF86DRIClipRectPtr)&box[i];
+	       n++;
+	    }
+	 }
+
+
+	 if ( MGA_DEBUG & DEBUG_VERBOSE_IOCTL )
+	    fprintf( stderr,
+		     "DRM_IOCTL_MGA_CLEAR flag 0x%x color %x depth %x nbox %d\n",
+		     flags, clear_color, clear_depth, mmesa->sarea->nbox );
+
+	 mmesa->sarea->nbox = n;
+
+         clear.flags = flags;
+         clear.clear_color = clear_color;
+         clear.clear_depth = clear_depth;
+         clear.color_mask = color_mask;
+         clear.depth_mask = depth_mask;
+         ret = drmCommandWrite( mmesa->driFd, DRM_MGA_CLEAR,
+                                 &clear, sizeof(drmMGAClearRec));
+	 if ( ret ) {
+	    fprintf( stderr, "send clear retcode = %d\n", ret );
+	    exit( 1 );
+	 }
+	 if ( MGA_DEBUG & DEBUG_VERBOSE_IOCTL )
+	    fprintf( stderr, "finished clear %d\n", ++nrclears );
+      }
+
+      UNLOCK_HARDWARE( mmesa );
+      mmesa->dirty |= MGA_UPLOAD_CLIPRECTS|MGA_UPLOAD_CONTEXT;
+   }
+
+   if (mask) 
+      _swrast_Clear( ctx, mask, all, cx, cy, cw, ch );
+}
+
+
+int nrswaps;
+
+
+void mgaWaitForVBlank( mgaContextPtr mmesa )
+{
+#if 0
+    drmVBlank vbl;
+    int ret;
+
+    if ( !mmesa->mgaScreen->irq )
+	return;
+
+    if ( getenv("LIBGL_SYNC_REFRESH") ) {
+	/* Wait for until the next vertical blank */
+	vbl.request.type = DRM_VBLANK_RELATIVE;
+	vbl.request.sequence = 1;
+    } else if ( getenv("LIBGL_THROTTLE_REFRESH") ) {
+	/* Wait for at least one vertical blank since the last call */
+	vbl.request.type = DRM_VBLANK_ABSOLUTE;
+	vbl.request.sequence = mmesa->vbl_seq + 1;
+    } else {
+	return;
+    }
+
+    if ((ret = drmWaitVBlank( mmesa->driFd, &vbl ))) {
+	fprintf(stderr, "%s: drmWaitVBlank returned %d, IRQs don't seem to be"
+		" working correctly.\nTry running with LIBGL_THROTTLE_REFRESH"
+		" and LIBL_SYNC_REFRESH unset.\n", __FUNCTION__, ret);
+	exit(1);
+    }
+
+    mmesa->vbl_seq = vbl.reply.sequence;
+#endif
+}
+
+
+/*
+ * Copy the back buffer to the front buffer.
+ */
+void mgaSwapBuffers(__DRIdrawablePrivate *dPriv)
+{
+   mgaContextPtr mmesa;
+   XF86DRIClipRectPtr pbox;
+   GLint nbox;
+   GLint ret, wait = 0;
+   GLint i;
+   GLuint last_frame, last_wrap;
+
+   assert(dPriv);
+   assert(dPriv->driContextPriv);
+   assert(dPriv->driContextPriv->driverPrivate);
+
+   mmesa = (mgaContextPtr) dPriv->driContextPriv->driverPrivate;
+
+   FLUSH_BATCH( mmesa );
+
+   mgaWaitForVBlank( mmesa );
+
+   LOCK_HARDWARE( mmesa );
+
+   last_frame = mmesa->sarea->last_frame.head;
+   last_wrap = mmesa->sarea->last_frame.wrap;
+
+   /* FIXME: Add a timeout to this loop...
+    */
+   while ( 1 ) {
+      if ( last_wrap < mmesa->sarea->last_wrap ||
+	   ( last_wrap == mmesa->sarea->last_wrap &&
+	     last_frame <= (MGA_READ( MGAREG_PRIMADDRESS ) -
+			    mmesa->primary_offset) ) ) {
+	 break;
+      }
+      if ( 0 ) {
+	 wait++;
+	 fprintf( stderr, "   last: head=0x%06x wrap=%d\n",
+		  last_frame, last_wrap );
+	 fprintf( stderr, "   head: head=0x%06lx wrap=%d\n",
+		  (long)(MGA_READ( MGAREG_PRIMADDRESS ) - mmesa->primary_offset),
+		  mmesa->sarea->last_wrap );
+      }
+      UPDATE_LOCK( mmesa, DRM_LOCK_FLUSH );
+
+      for ( i = 0 ; i < 1024 ; i++ ) {
+	 /* Don't just hammer the register... */
+      }
+   }
+   if ( wait )
+      fprintf( stderr, "\n" );
+
+   /* Use the frontbuffer cliprects
+    */
+   if (mmesa->dirty_cliprects & MGA_FRONT)
+      mgaUpdateRects( mmesa, MGA_FRONT );
+
+
+   pbox = dPriv->pClipRects;
+   nbox = dPriv->numClipRects;
+
+   for (i = 0 ; i < nbox ; )
+   {
+      int nr = MIN2(i + MGA_NR_SAREA_CLIPRECTS, dPriv->numClipRects);
+      XF86DRIClipRectPtr b = mmesa->sarea->boxes;
+
+      mmesa->sarea->nbox = nr - i;
+
+      for ( ; i < nr ; i++)
+	 *b++ = pbox[i];
+
+      if (0)
+	 fprintf(stderr, "DRM_IOCTL_MGA_SWAP\n");
+
+      ret = drmCommandNone( mmesa->driFd, DRM_MGA_SWAP );
+      if ( ret ) {
+	 printf("send swap retcode = %d\n", ret);
+	 exit(1);
+      }
+   }
+
+   UNLOCK_HARDWARE( mmesa );
+
+   mmesa->dirty |= MGA_UPLOAD_CLIPRECTS;
+}
+
+
+/* This is overkill
+ */
+void mgaDDFinish( GLcontext *ctx  )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+
+   FLUSH_BATCH( mmesa );
+
+   if (1/*mmesa->sarea->last_quiescent != mmesa->sarea->last_enqueue*/) {
+      if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
+	 fprintf(stderr, "mgaRegetLockQuiescent\n");
+
+      LOCK_HARDWARE( mmesa );
+      UPDATE_LOCK( mmesa, DRM_LOCK_QUIESCENT | DRM_LOCK_FLUSH );
+      UNLOCK_HARDWARE( mmesa );
+
+      mmesa->sarea->last_quiescent = mmesa->sarea->last_enqueue;
+   }
+}
+
+void mgaWaitAgeLocked( mgaContextPtr mmesa, int age  )
+{
+   if (GET_DISPATCH_AGE(mmesa) < age) {
+      UPDATE_LOCK( mmesa, DRM_LOCK_FLUSH );
+   }
+}
+
+
+void mgaWaitAge( mgaContextPtr mmesa, int age  )
+{
+   if (GET_DISPATCH_AGE(mmesa) < age) {
+      LOCK_HARDWARE(mmesa);
+      if (GET_DISPATCH_AGE(mmesa) < age) {
+	 UPDATE_LOCK( mmesa, DRM_LOCK_FLUSH );
+      }
+      UNLOCK_HARDWARE(mmesa);
+   }
+}
+
+
+static int intersect_rect( XF86DRIClipRectPtr out,
+			   XF86DRIClipRectPtr a,
+			   XF86DRIClipRectPtr b )
+{
+   *out = *a;
+   if (b->x1 > out->x1) out->x1 = b->x1;
+   if (b->y1 > out->y1) out->y1 = b->y1;
+   if (b->x2 < out->x2) out->x2 = b->x2;
+   if (b->y2 < out->y2) out->y2 = b->y2;
+   if (out->x1 > out->x2) return 0;
+   if (out->y1 > out->y2) return 0;
+   return 1;
+}
+
+
+
+
+static void age_mmesa( mgaContextPtr mmesa, int age )
+{
+   if (mmesa->CurrentTexObj[0]) mmesa->CurrentTexObj[0]->age = age;
+   if (mmesa->CurrentTexObj[1]) mmesa->CurrentTexObj[1]->age = age;
+}
+
+#ifdef __i386__
+static int __break_vertex = 0;
+#endif
+
+void mgaFlushVerticesLocked( mgaContextPtr mmesa )
+{
+   XF86DRIClipRectPtr pbox = mmesa->pClipRects;
+   int nbox = mmesa->numClipRects;
+   drmBufPtr buffer = mmesa->vertex_dma_buffer;
+   drmMGAVertex vertex;
+   int i;
+
+   mmesa->vertex_dma_buffer = 0;
+
+   if (!buffer)
+      return;
+
+   if (mmesa->dirty_cliprects & mmesa->draw_buffer)
+      mgaUpdateRects( mmesa, mmesa->draw_buffer );
+
+   if (mmesa->dirty & ~MGA_UPLOAD_CLIPRECTS)
+      mgaEmitHwStateLocked( mmesa );
+
+   /* FIXME: Workaround bug in kernel module.
+    */
+   mmesa->sarea->dirty |= MGA_UPLOAD_CONTEXT;
+
+   if (!nbox)
+      buffer->used = 0;
+
+   if (nbox >= MGA_NR_SAREA_CLIPRECTS)
+      mmesa->dirty |= MGA_UPLOAD_CLIPRECTS;
+
+#if 0
+   if (!buffer->used || !(mmesa->dirty & MGA_UPLOAD_CLIPRECTS))
+   {
+      if (nbox == 1)
+	 mmesa->sarea->nbox = 0;
+      else
+	 mmesa->sarea->nbox = nbox;
+
+      if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
+	 fprintf(stderr, "Firing vertex -- case a nbox %d\n", nbox);
+
+      vertex.idx = buffer->idx;
+      vertex.used = buffer->used;
+      vertex.discard = 1;
+      drmCommandWrite( mmesa->driFd, DRM_MGA_VERTEX, 
+                       &vertex, sizeof(drmMGAVertex) );
+
+      age_mmesa(mmesa, mmesa->sarea->last_enqueue);
+   }
+   else
+#endif
+   {
+      for (i = 0 ; i < nbox ; )
+      {
+	 int nr = MIN2(i + MGA_NR_SAREA_CLIPRECTS, nbox);
+	 XF86DRIClipRectPtr b = mmesa->sarea->boxes;
+	 int discard = 0;
+
+	 if (mmesa->scissor) {
+	    mmesa->sarea->nbox = 0;
+
+	    for ( ; i < nr ; i++) {
+	       *b = pbox[i];
+	       if (intersect_rect(b, b, &mmesa->scissor_rect)) {
+		  mmesa->sarea->nbox++;
+		  b++;
+	       }
+	    }
+
+	    /* Culled?
+	     */
+	    if (!mmesa->sarea->nbox) {
+	       if (nr < nbox) continue;
+	       buffer->used = 0;
+	    }
+	 } else {
+	    mmesa->sarea->nbox = nr - i;
+	    for ( ; i < nr ; i++)
+	       *b++ = pbox[i];
+	 }
+
+	 /* Finished with the buffer?
+	  */
+	 if (nr == nbox)
+	    discard = 1;
+
+	 mmesa->sarea->dirty |= MGA_UPLOAD_CLIPRECTS;
+
+         vertex.idx = buffer->idx;
+         vertex.used = buffer->used;
+         vertex.discard = discard;
+         drmCommandWrite( mmesa->driFd, DRM_MGA_VERTEX, 
+                          &vertex, sizeof(drmMGAVertex) );
+
+	 age_mmesa(mmesa, mmesa->sarea->last_enqueue);
+      }
+   }
+
+   /* Do we really need to do this ? */
+#ifdef __i386__
+   if ( __break_vertex ) {
+      __asm__ __volatile__ ( "int $3" );
+   }
+#endif
+
+   mmesa->dirty &= ~MGA_UPLOAD_CLIPRECTS;
+}
+
+void mgaFlushVertices( mgaContextPtr mmesa )
+{
+   LOCK_HARDWARE( mmesa );
+   mgaFlushVerticesLocked( mmesa );
+   UNLOCK_HARDWARE( mmesa );
+}
+
+
+void mgaFireILoadLocked( mgaContextPtr mmesa,
+			 GLuint offset, GLuint length )
+{
+   if (!mmesa->iload_buffer) {
+      fprintf(stderr, "mgaFireILoad: no buffer\n");
+      return;
+   }
+
+   if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
+      fprintf(stderr, "mgaFireILoad idx %d ofs 0x%x length %d\n",
+	      mmesa->iload_buffer->idx, (int)offset, (int)length );
+
+   mga_iload_dma_ioctl( mmesa, offset, length );
+}
+
+void mgaGetILoadBufferLocked( mgaContextPtr mmesa )
+{
+   if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
+      fprintf(stderr, "mgaGetIloadBuffer (buffer now %p)\n",
+	   mmesa->iload_buffer);
+
+   mmesa->iload_buffer = mga_get_buffer_ioctl( mmesa );
+}
+
+drmBufPtr mgaGetBufferLocked( mgaContextPtr mmesa )
+{
+   return mga_get_buffer_ioctl( mmesa );
+}
+
+
+
+void mgaDDFlush( GLcontext *ctx )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT( ctx );
+
+
+   FLUSH_BATCH( mmesa );
+
+   /* This may be called redundantly - dispatch_age may trail what
+    * has actually been sent and processed by the hardware.
+    */
+   if (1 || GET_DISPATCH_AGE( mmesa ) < mmesa->sarea->last_enqueue) {
+      LOCK_HARDWARE( mmesa );
+      UPDATE_LOCK( mmesa, DRM_LOCK_FLUSH );
+      UNLOCK_HARDWARE( mmesa );
+   }
+}
+
+
+
+
+void mgaReleaseBufLocked( mgaContextPtr mmesa, drmBufPtr buffer )
+{
+   drmMGAVertex vertex;
+
+   if (!buffer) return;
+
+   vertex.idx = buffer->idx;
+   vertex.used = 0;
+   vertex.discard = 1;
+   drmCommandWrite( mmesa->driFd, DRM_MGA_VERTEX, 
+                    &vertex, sizeof(drmMGAVertex) );
+}
+
+int mgaFlushDMA( int fd, drmLockFlags flags )
+{
+   drmMGALock lock;
+   int ret, i = 0;
+
+   memset( &lock, 0, sizeof(drmMGALock) );
+
+   if ( flags & DRM_LOCK_QUIESCENT )    lock.flags |= DRM_LOCK_QUIESCENT;
+   if ( flags & DRM_LOCK_FLUSH )        lock.flags |= DRM_LOCK_FLUSH;
+   if ( flags & DRM_LOCK_FLUSH_ALL )    lock.flags |= DRM_LOCK_FLUSH_ALL;
+
+   do {
+      ret = drmCommandWrite( fd, DRM_MGA_FLUSH, &lock, sizeof(drmMGALock) );
+   } while ( ret && errno == EBUSY && i++ < DRM_MGA_IDLE_RETRY );
+
+   if ( ret == 0 )
+      return 0;
+   if ( errno != EBUSY )
+      return -errno;
+
+   if ( lock.flags & DRM_LOCK_QUIESCENT ) {
+      /* Only keep trying if we need quiescence.
+       */
+      lock.flags &= ~(DRM_LOCK_FLUSH | DRM_LOCK_FLUSH_ALL);
+
+      do {
+         ret = drmCommandWrite( fd, DRM_MGA_FLUSH, &lock, sizeof(drmMGALock) );
+      } while ( ret && errno == EBUSY && i++ < DRM_MGA_IDLE_RETRY );
+   }
+
+   if ( ret == 0 ) {
+      return 0;
+   } else {
+      return -errno;
+   }
+}
+
+void mgaDDInitIoctlFuncs( GLcontext *ctx )
+{
+   ctx->Driver.Clear = mgaDDClear;
+   ctx->Driver.Flush = mgaDDFlush;
+   ctx->Driver.Finish = mgaDDFinish;
+}

src/mesa/drivers/dri/mga/mgaioctl.h

@@ -0,0 +1,113 @@
+/*
+ * Copyright 2000-2001 VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ *    Gareth Hughes <gareth@valinux.com>
+ */
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgaioctl.h,v 1.11 2002/10/30 12:51:36 alanh Exp $ */
+
+#ifndef MGA_IOCTL_H
+#define MGA_IOCTL_H
+
+#include "mgacontext.h"
+#include "mga_xmesa.h"
+
+void mgaSwapBuffers( __DRIdrawablePrivate *dPriv );
+
+GLuint *mgaAllocVertexDwords( mgaContextPtr mmesa, int dwords );
+
+
+void mgaGetILoadBufferLocked( mgaContextPtr mmesa );
+drmBufPtr mgaGetBufferLocked( mgaContextPtr mmesa );
+
+void mgaWaitForVBlank( mgaContextPtr mmesa );
+
+void mgaFireILoadLocked( mgaContextPtr mmesa,
+			 GLuint offset, GLuint length );
+
+void mgaWaitAgeLocked( mgaContextPtr mmesa, int age );
+void mgaWaitAge( mgaContextPtr mmesa, int age );
+
+void mgaFlushVertices( mgaContextPtr mmesa );
+void mgaFlushVerticesLocked( mgaContextPtr mmesa );
+void mgaReleaseBufLocked( mgaContextPtr mmesa, drmBufPtr buffer );
+int mgaFlushDMA( int fd, drmLockFlags flags );
+
+void mgaDDFlush( GLcontext *ctx );
+void mgaDDFinish( GLcontext *ctx );
+
+void mgaDDInitIoctlFuncs( GLcontext *ctx );
+
+#define FLUSH_BATCH(mmesa) do {						\
+        if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)  				\
+              fprintf(stderr, "FLUSH_BATCH in %s\n", __FUNCTION__);	\
+	if (mmesa->vertex_dma_buffer) mgaFlushVertices(mmesa);		\
+} while (0)
+
+#define MGA_STATECHANGE(mmesa, flag) do {	\
+   FLUSH_BATCH(mmesa);				\
+   mmesa->dirty |= flag;			\
+} while (0)
+
+
+extern drmBufPtr mga_get_buffer_ioctl( mgaContextPtr mmesa );
+
+static __inline
+GLuint *mgaAllocDmaLow( mgaContextPtr mmesa, int bytes )
+{
+   GLuint *head;
+
+   if (!mmesa->vertex_dma_buffer) {
+      LOCK_HARDWARE( mmesa );
+      mmesa->vertex_dma_buffer = mga_get_buffer_ioctl( mmesa );
+      UNLOCK_HARDWARE( mmesa );
+   } else if (mmesa->vertex_dma_buffer->used + bytes >
+	      mmesa->vertex_dma_buffer->total) {
+      LOCK_HARDWARE( mmesa );
+      mgaFlushVerticesLocked( mmesa );
+      mmesa->vertex_dma_buffer = mga_get_buffer_ioctl( mmesa );
+      UNLOCK_HARDWARE( mmesa );
+   }
+
+   head = (GLuint *)((char *)mmesa->vertex_dma_buffer->address +
+		      mmesa->vertex_dma_buffer->used);
+
+   mmesa->vertex_dma_buffer->used += bytes;
+   return head;
+}
+
+
+#define UPDATE_LOCK( mmesa, flags )					\
+do {									\
+   GLint ret = mgaFlushDMA( mmesa->driFd, flags );			\
+   if ( ret < 0 ) {							\
+      drmCommandNone( mmesa->driFd, DRM_MGA_RESET );			\
+      UNLOCK_HARDWARE( mmesa );						\
+      fprintf( stderr, "%s: flush ret=%d\n", __FUNCTION__, ret );	\
+      /*fprintf( stderr, "drmMGAFlushDMA: return = %d\n", ret );*/	\
+      exit( 1 );							\
+   }									\
+} while (0)
+
+#endif

src/mesa/drivers/dri/mga/mgapixel.c

@@ -0,0 +1,690 @@
+/*
+ * Copyright 2000 Compaq Computer Inc. and VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ *    Gareth Hughes <gareth@valinux.com>
+ */
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgapixel.c,v 1.9 2002/11/05 17:46:08 tsi Exp $ */
+
+#include "enums.h"
+#include "mtypes.h"
+#include "macros.h"
+#include "texutil.h"
+#include "mgadd.h"
+#include "mgacontext.h"
+#include "mgaioctl.h"
+#include "mgapixel.h"
+#include "mgabuffers.h"
+
+#include "xf86drm.h"
+#include "mga_common.h"
+
+#include "swrast/swrast.h"
+
+#define IS_AGP_MEM( mmesa, p )						  \
+   ((unsigned long)mmesa->mgaScreen->buffers.map <= ((unsigned long)p) && \
+    (unsigned long)mmesa->mgaScreen->buffers.map +			  \
+    (unsigned long)mmesa->mgaScreen->buffers.size > ((unsigned long)p))
+#define AGP_OFFSET( mmesa, p )						  \
+     (((unsigned long)p) - (unsigned long)mmesa->mgaScreen->buffers.map)
+
+
+#if defined(MESA_packed_depth_stencil)
+static GLboolean
+check_depth_stencil_24_8( const GLcontext *ctx, GLenum type,
+			  const struct gl_pixelstore_attrib *packing,
+			  const void *pixels, GLint sz,
+			  GLint pitch )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+
+   return ( type == GL_UNSIGNED_INT_24_8_MESA &&
+	    ctx->Visual->DepthBits == 24 &&
+	    ctx->Visual->StencilBits == 8 &&
+	    mmesa->mgaScreen->cpp == 4 &&
+	    mmesa->hw_stencil &&
+	    !ctx->Pixel.IndexShift &&
+	    !ctx->Pixel.IndexOffset &&
+	    !ctx->Pixel.MapStencilFlag &&
+	    ctx->Pixel.DepthBias == 0.0 &&
+	    ctx->Pixel.DepthScale == 1.0 &&
+	    !packing->SwapBytes &&
+	    pitch % 32 == 0 &&
+	    pitch < 4096 );
+}
+#endif
+
+
+static GLboolean
+check_depth( const GLcontext *ctx, GLenum type,
+	     const struct gl_pixelstore_attrib *packing,
+	     const void *pixels, GLint sz, GLint pitch )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+
+   if ( IS_AGP_MEM( mmesa, pixels ) &&
+	!( ( type == GL_UNSIGNED_INT && mmesa->mgaScreen->cpp == 4 ) ||
+	   ( type == GL_UNSIGNED_SHORT && mmesa->mgaScreen->cpp == 2 ) ) )
+      return GL_FALSE;
+
+   return ( ctx->Pixel.DepthBias == 0.0 &&
+	    ctx->Pixel.DepthScale == 1.0 &&
+	    !packing->SwapBytes &&
+	    pitch % 32 == 0 &&
+	    pitch < 4096 );
+}
+
+
+static GLboolean
+check_color( const GLcontext *ctx, GLenum type, GLenum format,
+	     const struct gl_pixelstore_attrib *packing,
+	     const void *pixels, GLint sz, GLint pitch )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+   GLuint cpp = mmesa->mgaScreen->cpp;
+
+   /* Can't do conversions on agp reads/draws.
+    */
+   if ( IS_AGP_MEM( mmesa, pixels ) &&
+	!( pitch % 32 == 0 && pitch < 4096 &&
+	   ( ( type == GL_UNSIGNED_BYTE &&
+	       cpp == 4 && format == GL_BGRA ) ||
+	     ( type == GL_UNSIGNED_INT_8_8_8_8 &&
+	       cpp == 4 && format == GL_BGRA ) ||
+	     ( type == GL_UNSIGNED_SHORT_5_6_5_REV &&
+	       cpp == 2 && format == GL_RGB ) ) ) )
+      return GL_FALSE;
+
+   return (!ctx->_ImageTransferState &&
+	   !packing->SwapBytes &&
+	   !packing->LsbFirst);
+}
+
+static GLboolean
+check_color_per_fragment_ops( const GLcontext *ctx )
+{
+   return (!(       ctx->Color.AlphaEnabled ||
+		    ctx->Depth.Test ||
+		    ctx->Fog.Enabled ||
+		    ctx->Scissor.Enabled ||
+		    ctx->Stencil.Enabled ||
+		    !ctx->Color.ColorMask[0] ||
+		    !ctx->Color.ColorMask[1] ||
+		    !ctx->Color.ColorMask[2] ||
+		    !ctx->Color.ColorMask[3] ||
+		    ctx->Color.ColorLogicOpEnabled ||
+		    ctx->Texture.Unit[0]._ReallyEnabled ||
+		    ctx->Depth.OcclusionTest
+           ) &&
+	   ctx->Current.RasterPosValid &&
+	   ctx->Pixel.ZoomX == 1.0F &&
+	   (ctx->Pixel.ZoomY == 1.0F || ctx->Pixel.ZoomY == -1.0F));
+}
+
+static GLboolean
+check_depth_per_fragment_ops( const GLcontext *ctx )
+{
+   return ( ctx->Current.RasterPosValid &&
+	    ctx->Color.ColorMask[RCOMP] == 0 &&
+	    ctx->Color.ColorMask[BCOMP] == 0 &&
+	    ctx->Color.ColorMask[GCOMP] == 0 &&
+	    ctx->Color.ColorMask[ACOMP] == 0 &&
+	    ctx->Pixel.ZoomX == 1.0F &&
+	    ( ctx->Pixel.ZoomY == 1.0F || ctx->Pixel.ZoomY == -1.0F ) );
+}
+
+/* In addition to the requirements for depth:
+ */
+#if defined(MESA_packed_depth_stencil)
+static GLboolean
+check_stencil_per_fragment_ops( const GLcontext *ctx )
+{
+   return ( !ctx->Pixel.IndexShift &&
+	    !ctx->Pixel.IndexOffset );
+}
+#endif
+
+
+static GLboolean
+clip_pixelrect( const GLcontext *ctx,
+		const GLframebuffer *buffer,
+		GLint *x, GLint *y,
+		GLsizei *width, GLsizei *height,
+		GLint *skipPixels, GLint *skipRows,
+		GLint *size )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+
+   *width = MIN2(*width, MAX_WIDTH); /* redundant? */
+
+   /* left clipping */
+   if (*x < buffer->_Xmin) {
+      *skipPixels += (buffer->_Xmin - *x);
+      *width -= (buffer->_Xmin - *x);
+      *x = buffer->_Xmin;
+   }
+
+   /* right clipping */
+   if (*x + *width > buffer->_Xmax)
+      *width -= (*x + *width - buffer->_Xmax - 1);
+
+   if (*width <= 0)
+      return GL_FALSE;
+
+   /* bottom clipping */
+   if (*y < buffer->_Ymin) {
+      *skipRows += (buffer->_Ymin - *y);
+      *height -= (buffer->_Ymin - *y);
+      *y = buffer->_Ymin;
+   }
+
+   /* top clipping */
+   if (*y + *height > buffer->_Ymax)
+      *height -= (*y + *height - buffer->_Ymax - 1);
+
+   if (*height <= 0)
+      return GL_FALSE;
+
+   *size = ((*y + *height - 1) * mmesa->mgaScreen->frontPitch +
+	    (*x + *width - 1) * mmesa->mgaScreen->cpp);
+
+   return GL_TRUE;
+}
+
+static GLboolean
+mgaTryReadPixels( GLcontext *ctx,
+		  GLint x, GLint y, GLsizei width, GLsizei height,
+		  GLenum format, GLenum type,
+		  const struct gl_pixelstore_attrib *pack,
+		  GLvoid *pixels )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+   GLint size, skipPixels, skipRows;
+   GLint pitch = pack->RowLength ? pack->RowLength : width;
+   GLboolean ok;
+
+   GLuint planemask;
+   GLuint source;
+#if 0
+   drmMGABlit blit;
+   GLuint dest;
+   GLint source_pitch, dest_pitch;
+   GLint delta_sx, delta_sy;
+   GLint delta_dx, delta_dy;
+   GLint blit_height, ydir;
+#endif
+
+   if (!clip_pixelrect(ctx, ctx->ReadBuffer,
+		       &x, &y, &width, &height,
+		       &skipPixels, &skipRows, &size)) {
+      return GL_TRUE;
+   }
+
+   /* Only accelerate reading to agp buffers.
+    */
+   if ( !IS_AGP_MEM(mmesa, (char *)pixels) ||
+	!IS_AGP_MEM(mmesa, (char *)pixels + size) )
+      return GL_FALSE;
+
+   switch (format) {
+#if defined(MESA_packed_depth_stencil)
+   case GL_DEPTH_STENCIL_MESA:
+      ok = check_depth_stencil_24_8(ctx, type, pack, pixels, size, pitch);
+      planemask = ~0;
+      source = mmesa->mgaScreen->depthOffset;
+      break;
+#endif
+
+   case GL_DEPTH_COMPONENT:
+      ok = check_depth(ctx, type, pack, pixels, size, pitch);
+
+      /* Can't accelerate at this depth -- planemask does the wrong
+       * thing; it doesn't clear the low order bits in the
+       * destination, instead it leaves them untouched.
+       *
+       * Could get the acclerator to solid fill the destination with
+       * zeros first...  Or get the cpu to do it...
+       */
+      if (ctx->Visual.depthBits == 24)
+	 return GL_FALSE;
+
+      planemask = ~0;
+      source = mmesa->mgaScreen->depthOffset;
+      break;
+
+   case GL_RGB:
+   case GL_BGRA:
+      ok = check_color(ctx, type, format, pack, pixels, size, pitch);
+      planemask = ~0;
+      source = (mmesa->draw_buffer == MGA_FRONT ?
+		mmesa->mgaScreen->frontOffset :
+		mmesa->mgaScreen->backOffset);
+      break;
+
+   default:
+      return GL_FALSE;
+   }
+
+   if (!ok) {
+      return GL_FALSE;
+   }
+
+
+   LOCK_HARDWARE( mmesa );
+
+#if 0
+   {
+      __DRIdrawablePrivate *dPriv = mmesa->driDrawable;
+      int nbox, retcode, i;
+
+      UPDATE_LOCK( mmesa, DRM_LOCK_FLUSH | DRM_LOCK_QUIESCENT );
+
+      if (mmesa->dirty_cliprects & MGA_FRONT)
+	 mgaUpdateRects( mmesa, MGA_FRONT );
+
+      nbox = dPriv->numClipRects;
+
+      y = dPriv->h - y - height;
+      x += mmesa->drawX;
+      y += mmesa->drawY;
+
+      dest = ((mmesa->mgaScreen->agp.handle + AGP_OFFSET(mmesa, pixels)) |
+	      DO_dstmap_sys | DO_dstacc_agp);
+      source_pitch = mmesa->mgaScreen->frontPitch / mmesa->mgaScreen->cpp;
+      dest_pitch = pitch;
+      delta_sx = 0;
+      delta_sy = 0;
+      delta_dx = -x;
+      delta_dy = -y;
+      blit_height = 2*y + height;
+      ydir = -1;
+
+      if (0) fprintf(stderr, "XX doing readpixel blit src_pitch %d dst_pitch %d\n",
+		     source_pitch, dest_pitch);
+
+
+
+      for (i = 0 ; i < nbox ; )
+      {
+	 int nr = MIN2(i + MGA_NR_SAREA_CLIPRECTS, dPriv->numClipRects);
+	 XF86DRIClipRectRec *box = dPriv->pClipRects;
+	 drm_clip_rect_t *b = mmesa->sarea->boxes;
+	 int n = 0;
+
+	 for ( ; i < nr ; i++) {
+	    GLint bx = box[i].x1;
+	    GLint by = box[i].y1;
+	    GLint bw = box[i].x2 - bx;
+	    GLint bh = box[i].y2 - by;
+
+	    if (bx < x) bw -= x - bx, bx = x;
+	    if (by < y) bh -= y - by, by = y;
+	    if (bx + bw > x + width) bw = x + width - bx;
+	    if (by + bh > y + height) bh = y + height - by;
+	    if (bw <= 0) continue;
+	    if (bh <= 0) continue;
+
+	    b->x1 = bx;
+	    b->y1 = by;
+	    b->x2 = bx + bw;
+	    b->y2 = by + bh;
+	    b++;
+	    n++;
+	 }
+
+	 mmesa->sarea->nbox = n;
+
+	 if (n && (retcode = drmCommandWrite( mmesa->driFd, DRM_MGA_BLIT,
+                                              &blit, sizeof(drmMGABlit)))) {
+	    fprintf(stderr, "blit ioctl failed, retcode = %d\n", retcode);
+	    UNLOCK_HARDWARE( mmesa );
+	    exit(1);
+	 }
+      }
+
+      UPDATE_LOCK( mmesa, DRM_LOCK_FLUSH | DRM_LOCK_QUIESCENT );
+   }
+#endif
+
+   UNLOCK_HARDWARE( mmesa );
+
+   return GL_TRUE;
+}
+
+static void
+mgaDDReadPixels( GLcontext *ctx,
+		 GLint x, GLint y, GLsizei width, GLsizei height,
+		 GLenum format, GLenum type,
+		 const struct gl_pixelstore_attrib *pack,
+		 GLvoid *pixels )
+{
+   if (!mgaTryReadPixels( ctx, x, y, width, height, format, type, pack, pixels))
+      _swrast_ReadPixels( ctx, x, y, width, height, format, type, pack, pixels);
+}
+
+
+
+
+static void do_draw_pix( GLcontext *ctx,
+			 GLint x, GLint y, GLsizei width, GLsizei height,
+			 GLint pitch,
+			 const void *pixels,
+			 GLuint dest, GLuint planemask)
+{
+#if 0
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+   drmMGABlit blit;
+   __DRIdrawablePrivate *dPriv = mmesa->driDrawable;
+   XF86DRIClipRectPtr pbox = dPriv->pClipRects;
+   int nbox = dPriv->numClipRects;
+   int retcode, i;
+
+   y = dPriv->h - y - height;
+   x += mmesa->drawX;
+   y += mmesa->drawY;
+
+   blit.dest = dest;
+   blit.planemask = planemask;
+   blit.source = ((mmesa->mgaScreen->agp.handle + AGP_OFFSET(mmesa, pixels))
+		  | SO_srcmap_sys | SO_srcacc_agp);
+   blit.dest_pitch = mmesa->mgaScreen->frontPitch / mmesa->mgaScreen->cpp;
+   blit.source_pitch = pitch;
+   blit.delta_sx = -x;
+   blit.delta_sy = -y;
+   blit.delta_dx = 0;
+   blit.delta_dy = 0;
+   if (ctx->Pixel.ZoomY == -1) {
+      blit.height = height;
+      blit.ydir = 1;
+   } else {
+      blit.height = height;
+      blit.ydir = -1;
+   }
+
+   if (0) fprintf(stderr,
+		  "doing drawpixel blit src_pitch %d dst_pitch %d\n",
+		  blit.source_pitch, blit.dest_pitch);
+
+   for (i = 0 ; i < nbox ; )
+   {
+      int nr = MIN2(i + MGA_NR_SAREA_CLIPRECTS, dPriv->numClipRects);
+      XF86DRIClipRectRec *box = mmesa->pClipRects;
+      drm_clip_rect_t *b = mmesa->sarea->boxes;
+      int n = 0;
+
+      for ( ; i < nr ; i++) {
+	 GLint bx = box[i].x1;
+	 GLint by = box[i].y1;
+	 GLint bw = box[i].x2 - bx;
+	 GLint bh = box[i].y2 - by;
+
+	 if (bx < x) bw -= x - bx, bx = x;
+	 if (by < y) bh -= y - by, by = y;
+	 if (bx + bw > x + width) bw = x + width - bx;
+	 if (by + bh > y + height) bh = y + height - by;
+	 if (bw <= 0) continue;
+	 if (bh <= 0) continue;
+
+	 b->x1 = bx;
+	 b->y1 = by;
+	 b->x2 = bx + bw;
+	 b->y2 = by + bh;
+	 b++;
+	 n++;
+      }
+
+      mmesa->sarea->nbox = n;
+
+      if (n && (retcode = drmCommandWrite( mmesa->driFd, DRM_MGA_BLIT,
+                                              &blit, sizeof(drmMGABlit)))) {
+	 fprintf(stderr, "blit ioctl failed, retcode = %d\n", retcode);
+	 UNLOCK_HARDWARE( mmesa );
+	 exit(1);
+      }
+   }
+#endif
+}
+
+
+
+
+static GLboolean
+mgaTryDrawPixels( GLcontext *ctx,
+		  GLint x, GLint y, GLsizei width, GLsizei height,
+		  GLenum format, GLenum type,
+		  const struct gl_pixelstore_attrib *unpack,
+		  const GLvoid *pixels )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+   GLint size, skipPixels, skipRows;
+   GLint pitch = unpack->RowLength ? unpack->RowLength : width;
+   GLuint dest, planemask;
+   GLuint cpp = mmesa->mgaScreen->cpp;
+
+   if (!clip_pixelrect(ctx, ctx->DrawBuffer,
+		       &x, &y, &width, &height,
+		       &skipPixels, &skipRows, &size)) {
+      return GL_TRUE;
+   }
+
+
+   switch (format) {
+#if defined(MESA_packed_depth_stencil)
+   case GL_DEPTH_STENCIL_MESA:
+      dest = mmesa->mgaScreen->depthOffset;
+      planemask = ~0;
+      if (!check_depth_stencil_24_8(ctx, type, unpack, pixels, size, pitch) ||
+	  !check_depth_per_fragment_ops(ctx) ||
+	  !check_stencil_per_fragment_ops(ctx))
+	 return GL_FALSE;
+      break;
+#endif
+
+   case GL_DEPTH_COMPONENT:
+      dest = mmesa->mgaScreen->depthOffset;
+
+      if (ctx->Visual.depthBits == 24)
+	 planemask = ~0xff;
+      else
+	 planemask = ~0;
+
+      if (!check_depth(ctx, type, unpack, pixels, size, pitch) ||
+	  !check_depth_per_fragment_ops(ctx))
+	 return GL_FALSE;
+      break;
+
+   case GL_RGB:
+   case GL_BGRA:
+      dest = (mmesa->draw_buffer == MGA_FRONT ?
+	      mmesa->mgaScreen->frontOffset :
+	      mmesa->mgaScreen->backOffset);
+
+      planemask = mgaPackColor(cpp,
+			       ctx->Color.ColorMask[RCOMP],
+			       ctx->Color.ColorMask[GCOMP],
+			       ctx->Color.ColorMask[BCOMP],
+			       ctx->Color.ColorMask[ACOMP]);
+
+      if (cpp == 2)
+	 planemask |= planemask << 16;
+
+      if (!check_color(ctx, type, format, unpack, pixels, size, pitch)) {
+	 return GL_FALSE;
+      }
+      if (!check_color_per_fragment_ops(ctx)) {
+	 return GL_FALSE;
+      }
+      break;
+
+   default:
+      return GL_FALSE;
+   }
+
+   LOCK_HARDWARE_QUIESCENT( mmesa );
+
+   if (mmesa->dirty_cliprects & MGA_FRONT)
+      mgaUpdateRects( mmesa, MGA_FRONT );
+
+   if ( IS_AGP_MEM(mmesa, (char *)pixels) &&
+	IS_AGP_MEM(mmesa, (char *)pixels + size) )
+   {
+      do_draw_pix( ctx, x, y, width, height, pitch, pixels,
+		   dest, planemask );
+      UPDATE_LOCK( mmesa, DRM_LOCK_FLUSH | DRM_LOCK_QUIESCENT );
+   }
+   else
+   {
+      /* Pixels is in regular memory -- get dma buffers and perform
+       * upload through them.
+       */
+/*        drmBufPtr buf = mgaGetBufferLocked(mmesa); */
+      GLuint bufferpitch = (width*cpp+31)&~31;
+
+      char *address = 0; /*  mmesa->mgaScreen->agp.map; */
+
+      do {
+/*  	 GLuint rows = MIN2( height, MGA_DMA_BUF_SZ / bufferpitch ); */
+	 GLuint rows = height;
+
+
+	 if (0) fprintf(stderr, "trying to upload %d rows (pitch %d)\n",
+			rows, bufferpitch);
+
+	 /* The texture conversion code is so slow that there is only
+	  * negligble speedup when the buffers/images don't exactly
+	  * match:
+	  */
+#if 0
+	 if (cpp == 2) {
+	    if (!_mesa_convert_texsubimage2d( MESA_FORMAT_RGB565,
+					      0, 0, width, rows,
+					      bufferpitch, format, type,
+					      unpack, pixels, address )) {
+/*  	       mgaReleaseBufLocked( mmesa, buf ); */
+	       UNLOCK_HARDWARE(mmesa);
+	       return GL_FALSE;
+	    }
+	 } else {
+	    if (!_mesa_convert_texsubimage2d( MESA_FORMAT_ARGB8888,
+					      0, 0, width, rows,
+					      bufferpitch, format, type,
+					      unpack, pixels, address )) {
+/*  	       mgaReleaseBufLocked( mmesa, buf ); */
+	       UNLOCK_HARDWARE(mmesa);
+	       return GL_FALSE;
+	    }
+	 }
+#else
+	 memcpy( address, pixels, rows*bufferpitch );
+#endif
+
+	 do_draw_pix( ctx, x, y, width, rows,
+		      bufferpitch/cpp, address, dest, planemask );
+
+	 /* Fix me -- use multiple buffers to avoid flush.
+	  */
+	 UPDATE_LOCK( mmesa, DRM_LOCK_FLUSH | DRM_LOCK_QUIESCENT );
+
+	 pixels = (void *)((char *) pixels + rows * pitch);
+	 height -= rows;
+	 y += rows;
+      } while (height);
+
+/*        mgaReleaseBufLocked( mmesa, buf ); */
+   }
+
+   UNLOCK_HARDWARE( mmesa );
+   mmesa->dirty |= MGA_UPLOAD_CLIPRECTS;
+
+   return GL_TRUE;
+}
+
+static void
+mgaDDDrawPixels( GLcontext *ctx,
+		 GLint x, GLint y, GLsizei width, GLsizei height,
+		 GLenum format, GLenum type,
+		 const struct gl_pixelstore_attrib *unpack,
+		 const GLvoid *pixels )
+{
+   if (!mgaTryDrawPixels( ctx, x, y, width, height, format, type,
+			  unpack, pixels ))
+      _swrast_DrawPixels( ctx, x, y, width, height, format, type,
+			  unpack, pixels );
+}
+
+
+
+/* Stub functions - not a real allocator, always returns pointer to
+ * the same block of agp space which isn't used for anything else at
+ * present.
+ */
+#if defined(MESA_hacked_agp_allocator)
+static void mgaDDFreeAgpMemory( GLcontext *ctx, void *ptr )
+{
+   (void) ptr;
+}
+
+static void *mgaDDAllocateAgpMemory( GLcontext *ctx, GLsizei size )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+
+   if (size < mmesa->mgaScreen->textureSize[MGA_AGP_HEAP])
+      return mmesa->mgaScreen->texVirtual[MGA_AGP_HEAP];
+   else
+      return 0;
+}
+
+static GLint mgaDDGetAgpOffset( GLcontext *ctx, const void *ptr )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+
+   if (!IS_AGP_MEM(mmesa, ptr))
+      return -1;
+
+   return AGP_OFFSET(mmesa, ptr);
+}
+#endif
+
+
+void mgaDDInitPixelFuncs( GLcontext *ctx )
+{
+#if defined (MESA_experimetal_agp_allocator)
+   ctx->Driver.AllocateAgpMemory = mgaDDAllocateAgpMemory;
+   ctx->Driver.GetAgpOffset = mgaDDGetAgpOffset;
+   ctx->Driver.FreeAgpMemory = mgaDDFreeAgpMemory;
+#endif
+
+   /* Pixel path fallbacks.
+    */
+   ctx->Driver.Accum = _swrast_Accum;
+   ctx->Driver.Bitmap = _swrast_Bitmap;
+   ctx->Driver.CopyPixels = _swrast_CopyPixels;
+   ctx->Driver.DrawPixels = _swrast_DrawPixels;
+   ctx->Driver.ReadPixels = _swrast_ReadPixels;
+
+   if (getenv("MGA_BLIT_PIXELS")) {
+      ctx->Driver.ReadPixels = mgaDDReadPixels; /* requires agp dest */
+      ctx->Driver.DrawPixels = mgaDDDrawPixels; /* works with agp/normal mem */
+   }
+}

src/mesa/drivers/dri/mga/mgapixel.h

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2000-2001 Compaq Computer Inc. VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgapixel.h,v 1.5 2002/10/30 12:51:36 alanh Exp $ */
+
+#ifndef MGA_PIXELS_H
+#define MGA_PIXELS_H
+
+#include "mtypes.h"
+
+extern void mgaDDInitPixelFuncs( GLcontext *ctx );
+
+#endif

src/mesa/drivers/dri/mga/mgarender.c

@@ -0,0 +1,208 @@
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgarender.c,v 1.4 2002/10/30 12:51:36 alanh Exp $ */
+/**************************************************************************
+
+Copyright 2000, 2001 ATI Technologies Inc., Ontario, Canada, and
+                     VA Linux Systems Inc., Fremont, California.
+
+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
+on the rights to use, copy, modify, merge, publish, distribute, sub
+license, 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 (including the next
+paragraph) 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,
+FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ATI, VA LINUX SYSTEMS AND/OR THEIR SUPPLIERS 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.
+
+**************************************************************************/
+
+/*
+ * Authors:
+ *   Keith Whitwell <keith@tungstengraphics.com>
+ *
+ */
+
+
+/*
+ * Render unclipped vertex buffers by emitting vertices directly to
+ * dma buffers.  Use strip/fan hardware primitives where possible.
+ * Simulate missing primitives with indexed vertices.
+ */
+#include "glheader.h"
+#include "context.h"
+#include "macros.h"
+/*//#include "mem.h"*/
+#include "mtypes.h"
+/*#include "mmath.h" */
+
+#include "tnl/t_context.h"
+
+#include "mgacontext.h"
+#include "mgatris.h"
+#include "mgastate.h"
+#include "mgaioctl.h"
+#include "mgavb.h"
+
+#define HAVE_POINTS      0
+#define HAVE_LINES       0
+#define HAVE_LINE_STRIPS 0
+#define HAVE_TRIANGLES   1
+#define HAVE_TRI_STRIPS  1
+#define HAVE_TRI_STRIP_1 0
+#define HAVE_TRI_FANS    1
+#define HAVE_POLYGONS    0
+#define HAVE_QUADS       0
+#define HAVE_QUAD_STRIPS 0
+
+#define HAVE_ELTS        0	/* for now */
+
+static void mgaDmaPrimitive( GLcontext *ctx, GLenum prim )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+   GLuint hwprim;
+
+   switch (prim) {
+   case GL_TRIANGLES:
+      hwprim = MGA_WA_TRIANGLES;
+      break;
+   case GL_TRIANGLE_STRIP:
+      if (mmesa->vertex_size == 8)
+	 hwprim = MGA_WA_TRISTRIP_T0;
+      else
+	 hwprim = MGA_WA_TRISTRIP_T0T1;
+      break;
+   case GL_TRIANGLE_FAN:
+      if (mmesa->vertex_size == 8)
+	 hwprim = MGA_WA_TRIFAN_T0;
+      else
+	 hwprim = MGA_WA_TRIFAN_T0T1;
+      break;
+   default:
+      return;
+   }
+
+   mgaRasterPrimitive( ctx, GL_TRIANGLES, hwprim );
+}
+
+static void VERT_FALLBACK( GLcontext *ctx, GLuint start, GLuint count, 
+			   GLuint flags )
+{
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   tnl->Driver.Render.PrimitiveNotify( ctx, flags & PRIM_MODE_MASK );
+   tnl->Driver.Render.BuildVertices( ctx, start, count, ~0 );
+   tnl->Driver.Render.PrimTabVerts[flags&PRIM_MODE_MASK]( ctx, start, count, flags );
+   MGA_CONTEXT(ctx)->SetupNewInputs |= VERT_BIT_CLIP;
+}
+
+#define LOCAL_VARS mgaContextPtr mmesa = MGA_CONTEXT(ctx) 
+#define INIT( prim ) do {			\
+   if (0) fprintf(stderr, "%s\n", __FUNCTION__);	\
+   FLUSH_BATCH(mmesa);				\
+   mgaDmaPrimitive( ctx, prim );		\
+} while (0)
+#define NEW_PRIMITIVE()  FLUSH_BATCH( mmesa )
+#define NEW_BUFFER()  FLUSH_BATCH( mmesa )
+#define GET_CURRENT_VB_MAX_VERTS() \
+   0 /* fix me */
+#define GET_SUBSEQUENT_VB_MAX_VERTS() \
+   MGA_BUFFER_SIZE / (mmesa->vertex_size * 4)
+#define EMIT_VERTS( ctx, j, nr ) \
+   mga_emit_contiguous_verts(ctx, j, (j)+(nr))
+
+ 
+#define TAG(x) mga_##x
+#include "tnl_dd/t_dd_dmatmp.h"
+
+
+
+/**********************************************************************/
+/*                          Render pipeline stage                     */
+/**********************************************************************/
+
+
+static GLboolean mga_run_render( GLcontext *ctx,
+				  struct gl_pipeline_stage *stage )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   struct vertex_buffer *VB = &tnl->vb; 
+   GLuint i, length, flags = 0;
+
+   /* Don't handle clipping or indexed vertices or vertex manipulations.
+    */
+   if (VB->ClipOrMask || mmesa->RenderIndex != 0 || VB->Elts) {
+      return GL_TRUE;
+   }
+   
+   tnl->Driver.Render.Start( ctx );
+   mmesa->SetupNewInputs = ~0;      
+
+   for (i = VB->FirstPrimitive ; !(flags & PRIM_LAST) ; i += length)
+   {
+      flags = VB->Primitive[i];
+      length= VB->PrimitiveLength[i];	
+      if (length)
+	 mga_render_tab_verts[flags & PRIM_MODE_MASK]( ctx, i, i + length,
+						       flags );
+   } 
+
+   tnl->Driver.Render.Finish( ctx );
+
+   return GL_FALSE;		/* finished the pipe */
+}
+
+
+static void mga_check_render( GLcontext *ctx, struct gl_pipeline_stage *stage )
+{
+   GLuint inputs = VERT_BIT_POS | VERT_BIT_CLIP | VERT_BIT_COLOR0;
+
+   if (ctx->RenderMode == GL_RENDER) {
+      if (ctx->_TriangleCaps & DD_SEPARATE_SPECULAR) 
+	 inputs |= VERT_BIT_COLOR1;
+
+      if (ctx->Texture.Unit[0]._ReallyEnabled)
+	 inputs |= VERT_BIT_TEX0;
+
+      if (ctx->Texture.Unit[1]._ReallyEnabled)
+	 inputs |= VERT_BIT_TEX1;
+
+      if (ctx->Fog.Enabled) 
+	 inputs |= VERT_BIT_FOG;
+   }
+
+   stage->inputs = inputs;
+}
+
+
+static void dtr( struct gl_pipeline_stage *stage )
+{
+   (void)stage;
+}
+
+
+const struct gl_pipeline_stage _mga_render_stage = 
+{ 
+   "mga render",
+   (_DD_NEW_SEPARATE_SPECULAR |
+    _NEW_TEXTURE|
+    _NEW_FOG|
+    _NEW_RENDERMODE),		/* re-check (new inputs) */
+   0,				/* re-run (always runs) */
+   GL_TRUE,			/* active */
+   0, 0,			/* inputs (set in check_render), outputs */
+   0, 0,			/* changed_inputs, private */
+   dtr,				/* destructor */
+   mga_check_render,		/* check - initially set to alloc data */
+   mga_run_render		/* run */
+};

src/mesa/drivers/dri/mga/mgaspan.c

@@ -0,0 +1,284 @@
+/*
+ * Copyright 2000-2001 VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgaspan.c,v 1.11 2002/10/30 12:51:36 alanh Exp $ */
+
+#include "mtypes.h"
+#include "mgadd.h"
+#include "mgacontext.h"
+#include "mgaspan.h"
+#include "mgaioctl.h"
+#include "swrast/swrast.h"
+
+#define DBG 0
+
+
+#define LOCAL_VARS					\
+   __DRIdrawablePrivate *dPriv = mmesa->driDrawable;	\
+   mgaScreenPrivate *mgaScreen = mmesa->mgaScreen;	\
+   __DRIscreenPrivate *sPriv = mmesa->driScreen;	\
+   GLuint pitch = mgaScreen->frontPitch;		\
+   GLuint height = dPriv->h;				\
+   char *read_buf = (char *)(sPriv->pFB +		\
+			mmesa->readOffset +		\
+			dPriv->x * mgaScreen->cpp +	\
+			dPriv->y * pitch);		\
+   char *buf = (char *)(sPriv->pFB +			\
+			mmesa->drawOffset +		\
+			dPriv->x * mgaScreen->cpp +	\
+			dPriv->y * pitch);		\
+   GLuint p;						\
+   (void) read_buf; (void) buf; (void) p
+   
+
+
+#define LOCAL_DEPTH_VARS						\
+   __DRIdrawablePrivate *dPriv = mmesa->driDrawable;			\
+   mgaScreenPrivate *mgaScreen = mmesa->mgaScreen;			\
+   __DRIscreenPrivate *sPriv = mmesa->driScreen;			\
+   GLuint pitch = mgaScreen->frontPitch;				\
+   GLuint height = dPriv->h;						\
+   char *buf = (char *)(sPriv->pFB +					\
+			mgaScreen->depthOffset +			\
+			dPriv->x * mgaScreen->cpp +			\
+			dPriv->y * pitch)
+
+#define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS 
+
+#define CLIPPIXEL(_x,_y) (_x >= minx && _x < maxx && \
+			  _y >= miny && _y < maxy)
+
+#define CLIPSPAN( _x, _y, _n, _x1, _n1, _i )				\
+   if ( _y < miny || _y >= maxy ) {					\
+      _n1 = 0, _x1 = x;							\
+   } else {								\
+      _n1 = _n;								\
+      _x1 = _x;								\
+      if ( _x1 < minx ) _i += (minx-_x1), n1 -= (minx-_x1), _x1 = minx; \
+      if ( _x1 + _n1 >= maxx ) n1 -= (_x1 + n1 - maxx);		        \
+   }
+
+
+#define HW_LOCK()				\
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);	\
+   FLUSH_BATCH(mmesa);				\
+   LOCK_HARDWARE_QUIESCENT(mmesa);
+
+
+#define HW_CLIPLOOP()						\
+  do {								\
+    int _nc = mmesa->numClipRects;				\
+    while (_nc--) {						\
+       int minx = mmesa->pClipRects[_nc].x1 - mmesa->drawX;	\
+       int miny = mmesa->pClipRects[_nc].y1 - mmesa->drawY;	\
+       int maxx = mmesa->pClipRects[_nc].x2 - mmesa->drawX;	\
+       int maxy = mmesa->pClipRects[_nc].y2 - mmesa->drawY;
+
+#define HW_ENDCLIPLOOP()			\
+    }						\
+  } while (0)
+
+#define HW_UNLOCK()				\
+    UNLOCK_HARDWARE(mmesa);
+
+
+
+
+
+
+
+/* 16 bit, 565 rgb color spanline and pixel functions
+ */
+#define Y_FLIP(_y) (height - _y - 1)
+
+#undef INIT_MONO_PIXEL
+#define INIT_MONO_PIXEL(p, color) \
+  p = MGAPACKCOLOR565( color[0], color[1], color[2] )
+
+
+#define WRITE_RGBA( _x, _y, r, g, b, a )				\
+   *(GLushort *)(buf + _x*2 + _y*pitch)  = ( (((int)r & 0xf8) << 8) |	\
+		                             (((int)g & 0xfc) << 3) |	\
+		                             (((int)b & 0xf8) >> 3))
+
+#define WRITE_PIXEL( _x, _y, p )  \
+   *(GLushort *)(buf + _x*2 + _y*pitch) = p
+
+#define READ_RGBA( rgba, _x, _y )				\
+do {								\
+   GLushort p = *(GLushort *)(read_buf + _x*2 + _y*pitch);	\
+   rgba[0] = (((p >> 11) & 0x1f) * 255) / 31;			\
+   rgba[1] = (((p >>  5) & 0x3f) * 255) / 63;			\
+   rgba[2] = (((p >>  0) & 0x1f) * 255) / 31;			\
+   rgba[3] = 255;						\
+} while(0)
+
+#define TAG(x) mga##x##_565
+#include "spantmp.h"
+
+
+
+
+
+/* 32 bit, 8888 argb color spanline and pixel functions
+ */
+
+#undef INIT_MONO_PIXEL
+#define INIT_MONO_PIXEL(p, color) \
+  p = MGAPACKCOLOR8888( color[0], color[1], color[2], color[3] )
+
+
+#define WRITE_RGBA(_x, _y, r, g, b, a)			\
+    *(GLuint *)(buf + _x*4 + _y*pitch) = ((r << 16) |	\
+					  (g << 8)  |	\
+					  (b << 0)  |	\
+					  (a << 24) )
+
+#define WRITE_PIXEL(_x, _y, p)			\
+    *(GLuint *)(buf + _x*4 + _y*pitch) = p
+
+#define READ_RGBA(rgba, _x, _y)					\
+    do {							\
+	GLuint p = *(GLuint *)(read_buf + _x*4 + _y*pitch);	\
+	rgba[0] = (p >> 16) & 0xff;				\
+	rgba[1] = (p >> 8)  & 0xff;				\
+	rgba[2] = (p >> 0)  & 0xff;				\
+	rgba[3] = 0xff;						\
+    } while (0)
+
+#define TAG(x) mga##x##_8888
+#include "spantmp.h"
+
+
+
+
+/* 16 bit depthbuffer functions.
+ */
+#define WRITE_DEPTH( _x, _y, d )	\
+   *(GLushort *)(buf + _x*2 + _y*pitch) = d;
+
+#define READ_DEPTH( d, _x, _y )		\
+   d = *(GLushort *)(buf + _x*2 + _y*pitch);
+
+#define TAG(x) mga##x##_16
+#include "depthtmp.h"
+
+
+
+
+/* 32 bit depthbuffer functions.
+ */
+#define WRITE_DEPTH( _x, _y, d )	\
+   *(GLuint *)(buf + _x*4 + _y*pitch) = d;
+
+#define READ_DEPTH( d, _x, _y )		\
+   d = *(GLuint *)(buf + _x*4 + _y*pitch);
+
+#define TAG(x) mga##x##_32
+#include "depthtmp.h"
+
+
+
+/* 24/8 bit interleaved depth/stencil functions
+ */
+#define WRITE_DEPTH( _x, _y, d ) {			\
+   GLuint tmp = *(GLuint *)(buf + _x*4 + _y*pitch);	\
+   tmp &= 0xff;						\
+   tmp |= (d) << 8;					\
+   *(GLuint *)(buf + _x*4 + _y*pitch) = tmp;		\
+}
+
+#define READ_DEPTH( d, _x, _y )	{				\
+   d = (*(GLuint *)(buf + _x*4 + _y*pitch) & ~0xff) >> 8;	\
+}
+
+#define TAG(x) mga##x##_24_8
+#include "depthtmp.h"
+
+#define WRITE_STENCIL( _x, _y, d ) {			\
+   GLuint tmp = *(GLuint *)(buf + _x*4 + _y*pitch);	\
+   tmp &= 0xffffff00;					\
+   tmp |= d & 0xff;					\
+   *(GLuint *)(buf + _x*4 + _y*pitch) = tmp;		\
+}
+
+#define READ_STENCIL( d, _x, _y )		\
+   d = *(GLuint *)(buf + _x*4 + _y*pitch) & 0xff;
+
+#define TAG(x) mga##x##_24_8
+#include "stenciltmp.h"
+
+
+
+void mgaDDInitSpanFuncs( GLcontext *ctx )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+   struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
+
+   switch (mmesa->mgaScreen->cpp) {
+   case 2:
+      swdd->WriteRGBASpan = mgaWriteRGBASpan_565;
+      swdd->WriteRGBSpan = mgaWriteRGBSpan_565;
+      swdd->WriteMonoRGBASpan = mgaWriteMonoRGBASpan_565;
+      swdd->WriteRGBAPixels = mgaWriteRGBAPixels_565;
+      swdd->WriteMonoRGBAPixels = mgaWriteMonoRGBAPixels_565;
+      swdd->ReadRGBASpan = mgaReadRGBASpan_565;
+      swdd->ReadRGBAPixels = mgaReadRGBAPixels_565;
+
+      swdd->ReadDepthSpan = mgaReadDepthSpan_16;
+      swdd->WriteDepthSpan = mgaWriteDepthSpan_16;
+      swdd->ReadDepthPixels = mgaReadDepthPixels_16;
+      swdd->WriteDepthPixels = mgaWriteDepthPixels_16;
+      break;
+
+   case 4:
+      swdd->WriteRGBASpan = mgaWriteRGBASpan_8888;
+      swdd->WriteRGBSpan = mgaWriteRGBSpan_8888;
+      swdd->WriteMonoRGBASpan = mgaWriteMonoRGBASpan_8888;
+      swdd->WriteRGBAPixels = mgaWriteRGBAPixels_8888;
+      swdd->WriteMonoRGBAPixels = mgaWriteMonoRGBAPixels_8888;
+      swdd->ReadRGBASpan = mgaReadRGBASpan_8888;
+      swdd->ReadRGBAPixels = mgaReadRGBAPixels_8888;
+      
+      if (!mmesa->hw_stencil) {
+	 swdd->ReadDepthSpan = mgaReadDepthSpan_32;
+	 swdd->WriteDepthSpan = mgaWriteDepthSpan_32;
+	 swdd->ReadDepthPixels = mgaReadDepthPixels_32;
+	 swdd->WriteDepthPixels = mgaWriteDepthPixels_32;
+      } else {
+	 swdd->ReadDepthSpan = mgaReadDepthSpan_24_8;
+	 swdd->WriteDepthSpan = mgaWriteDepthSpan_24_8;
+	 swdd->ReadDepthPixels = mgaReadDepthPixels_24_8;
+	 swdd->WriteDepthPixels = mgaWriteDepthPixels_24_8;
+
+	 swdd->ReadStencilSpan = mgaReadStencilSpan_24_8;
+	 swdd->WriteStencilSpan = mgaWriteStencilSpan_24_8;
+	 swdd->ReadStencilPixels = mgaReadStencilPixels_24_8;
+	 swdd->WriteStencilPixels = mgaWriteStencilPixels_24_8;
+      }
+      break;
+   }
+}

src/mesa/drivers/dri/mga/mgaspan.h

@@ -0,0 +1,34 @@
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgaspan.h,v 1.3 2002/10/30 12:51:36 alanh Exp $ */
+/*
+ * Copyright 2000-2001 VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#ifndef _MGA_SPAN_H
+#define _MGA_SPAN_H
+
+extern void mgaDDInitSpanFuncs( GLcontext *ctx );
+
+#endif

src/mesa/drivers/dri/mga/mgastate.h

@@ -0,0 +1,42 @@
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgastate.h,v 1.5 2002/10/30 12:51:36 alanh Exp $ */
+/*
+ * Copyright 2000-2001 VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#ifndef _MGA_STATE_H
+#define _MGA_STATE_H
+
+
+extern void mgaInitState( mgaContextPtr mmesa );
+extern void mgaDDInitStateFuncs(GLcontext *ctx);
+extern void mgaDDUpdateHwState( GLcontext *ctx );
+extern void mgaUpdateClipping(const GLcontext *ctx);
+extern void mgaUpdateCull( GLcontext *ctx );
+extern void mgaCalcViewport( GLcontext *ctx );
+
+
+
+#endif

src/mesa/drivers/dri/mga/mgatex.c

@@ -0,0 +1,985 @@
+/*
+ * Copyright 2000-2001 VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgatex.c,v 1.14 2002/10/30 12:51:36 alanh Exp $ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <GL/gl.h>
+
+#include "mm.h"
+#include "mgacontext.h"
+#include "mgatex.h"
+#include "mgaregs.h"
+#include "mgatris.h"
+#include "mgaioctl.h"
+
+#include "enums.h"
+#include "simple_list.h"
+/*#include "mem.h"*/
+#include "macros.h"
+#include "texformat.h"
+#include "texstore.h"
+#include "teximage.h"
+
+#include "swrast/swrast.h"
+
+#define TEX_0 1
+#define TEX_1 2
+
+/*
+ * mgaDestroyTexObj
+ * Free all memory associated with a texture and NULL any pointers
+ * to it.
+ */
+void
+mgaDestroyTexObj( mgaContextPtr mmesa, mgaTextureObjectPtr t )
+{
+   if ( !t ) return;
+
+   /* free the texture memory */
+   if (t->MemBlock) {
+      mmFreeMem( t->MemBlock );
+      t->MemBlock = 0;
+
+      if (mmesa && t->age > mmesa->dirtyAge)
+	 mmesa->dirtyAge = t->age;
+   }
+
+   /* free mesa's link */
+   if (t->tObj)
+      t->tObj->DriverData = NULL;
+
+   /* see if it was the driver's current object */
+   if (mmesa) {
+      if (t->bound & TEX_0) mmesa->CurrentTexObj[0] = 0;
+      if (t->bound & TEX_1) mmesa->CurrentTexObj[1] = 0;
+   }
+	
+   remove_from_list(t);
+   free( t );
+}
+
+
+/*
+ * mgaSetTexWrappings
+ */
+static void mgaSetTexWrapping( mgaTextureObjectPtr t,
+			       GLenum sWrap,
+			       GLenum tWrap )
+{
+   GLuint val = 0;
+
+   if (sWrap != GL_REPEAT)
+      val |= TMC_clampu_enable;
+
+   if (tWrap != GL_REPEAT)
+      val |= TMC_clampv_enable;
+
+   t->setup.texctl &= ~(TMC_clampu_enable|TMC_clampv_enable);
+   t->setup.texctl |= val;
+}
+
+
+/*
+ * mgaSetTexFilter
+ */
+static void mgaSetTexFilter(mgaTextureObjectPtr t, GLenum minf, GLenum magf)
+{
+   GLuint val = 0;
+
+   switch (minf) {
+   case GL_NEAREST: val = TF_minfilter_nrst; break;
+   case GL_LINEAR: val = TF_minfilter_bilin; break;
+   case GL_NEAREST_MIPMAP_NEAREST: val = TF_minfilter_mm1s; break;
+   case GL_LINEAR_MIPMAP_NEAREST: val = TF_minfilter_mm4s; break;
+   case GL_NEAREST_MIPMAP_LINEAR: val = TF_minfilter_mm2s; break;
+   case GL_LINEAR_MIPMAP_LINEAR: val = TF_minfilter_mm8s; break;
+   default: val = TF_minfilter_nrst; break;
+   }
+
+   switch (magf) {
+   case GL_NEAREST: val |= TF_magfilter_nrst; break;
+   case GL_LINEAR: val |= TF_magfilter_bilin; break;
+   default: val |= TF_magfilter_nrst; break;
+   }
+
+   /* See OpenGL 1.2 specification */
+   if (magf == GL_LINEAR && (minf == GL_NEAREST_MIPMAP_NEAREST ||
+			     minf == GL_NEAREST_MIPMAP_LINEAR)) {
+      val |= (0x20 << TF_fthres_SHIFT); /* c = 0.5 */
+   } else {
+      val |= (0x10 << TF_fthres_SHIFT); /* c = 0 */
+   }
+
+
+   t->setup.texfilter &= (TF_minfilter_MASK |
+			  TF_magfilter_MASK |
+			  TF_fthres_MASK);
+   t->setup.texfilter |= val;
+}
+
+/*
+ * mgaSetTexBorderColor
+ */
+static void mgaSetTexBorderColor(mgaTextureObjectPtr t, GLubyte color[4])
+{
+   t->setup.texbordercol = MGAPACKCOLOR8888(color[0],color[1],
+					    color[2],color[3]);
+}
+
+
+static GLint mgaChooseTexFormat( mgaContextPtr mmesa,
+				 struct gl_texture_image *texImage,
+				 GLenum format, GLenum type )
+{
+   const GLboolean do32bpt = mmesa->default32BitTextures;
+   const struct gl_texture_format *texFormat;
+   GLint ret;
+
+   if ( 0 )
+      fprintf( stderr, "internal=%s format=%s type=%s\n",
+	       texImage->IntFormat == 3 ? "GL_RGB (3)" :
+	       texImage->IntFormat == 4 ? "GL_RGBA (4)" :
+	       _mesa_lookup_enum_by_nr( texImage->IntFormat ),
+	       _mesa_lookup_enum_by_nr( format ),
+	       _mesa_lookup_enum_by_nr( type ) );
+
+#define SET_FORMAT( r, gl )						\
+   do {									\
+      ret = (r);							\
+      texFormat = &(gl);						\
+   } while (0)
+
+#define SET_FORMAT_32BPT( r32, gl32, r16, gl16 )			\
+   do {									\
+      if ( do32bpt ) {							\
+	 ret = (r32);							\
+	 texFormat = &(gl32);						\
+      } else {								\
+	 ret = (r16);							\
+	 texFormat = &(gl16);						\
+      }									\
+   } while (0)
+
+   switch ( texImage->IntFormat ) {
+      /* GH: Bias towards GL_RGB, GL_RGBA texture formats.  This has
+       * got to be better than sticking them way down the end of this
+       * huge list.
+       */
+   case 4:
+   case GL_RGBA:
+   case GL_COMPRESSED_RGBA:
+      if ( format == GL_BGRA ) {
+	 if ( type == GL_UNSIGNED_INT_8_8_8_8_REV ) {
+	    SET_FORMAT( TMC_tformat_tw32, _mesa_texformat_argb8888 );
+	    break;
+	 } else if ( type == GL_UNSIGNED_SHORT_4_4_4_4_REV ) {
+	    SET_FORMAT( TMC_tformat_tw12, _mesa_texformat_argb4444 );
+	    break;
+	 } else if ( type == GL_UNSIGNED_SHORT_1_5_5_5_REV ) {
+	    SET_FORMAT( TMC_tformat_tw15, _mesa_texformat_argb1555 );
+	    break;
+	 }
+      }
+      SET_FORMAT_32BPT( TMC_tformat_tw32, _mesa_texformat_argb8888,
+			TMC_tformat_tw12, _mesa_texformat_argb4444 );
+      break;
+
+   case 3:
+   case GL_RGB:
+   case GL_COMPRESSED_RGB:
+      if ( format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5 ) {
+	 SET_FORMAT( TMC_tformat_tw16, _mesa_texformat_rgb565 );
+	 break;
+      }
+      SET_FORMAT_32BPT( TMC_tformat_tw32, _mesa_texformat_argb8888,
+			TMC_tformat_tw16, _mesa_texformat_rgb565 );
+      break;
+
+      /* GH: Okay, keep checking as normal.  Still test for GL_RGB,
+       * GL_RGBA formats first.
+       */
+   case GL_RGBA8:
+   case GL_RGB10_A2:
+   case GL_RGBA12:
+   case GL_RGBA16:
+      SET_FORMAT_32BPT( TMC_tformat_tw32, _mesa_texformat_argb8888,
+			TMC_tformat_tw12, _mesa_texformat_argb4444 );
+      break;
+
+   case GL_RGBA4:
+   case GL_RGBA2:
+      SET_FORMAT( TMC_tformat_tw12, _mesa_texformat_argb4444 );
+      break;
+
+   case GL_RGB5_A1:
+      SET_FORMAT( TMC_tformat_tw15, _mesa_texformat_argb1555 );
+      break;
+
+   case GL_RGB8:
+   case GL_RGB10:
+   case GL_RGB12:
+   case GL_RGB16:
+      SET_FORMAT_32BPT( TMC_tformat_tw32, _mesa_texformat_argb8888,
+			TMC_tformat_tw16, _mesa_texformat_rgb565 );
+      break;
+
+   case GL_RGB5:
+   case GL_RGB4:
+   case GL_R3_G3_B2:
+      SET_FORMAT( TMC_tformat_tw16, _mesa_texformat_rgb565 );
+      break;
+
+   case GL_ALPHA:
+   case GL_ALPHA4:
+   case GL_ALPHA8:
+   case GL_ALPHA12:
+   case GL_ALPHA16:
+   case GL_COMPRESSED_ALPHA:
+      /* FIXME: This will report incorrect component sizes... */
+      SET_FORMAT( TMC_tformat_tw12, _mesa_texformat_argb4444 );
+      break;
+
+   case 1:
+   case GL_LUMINANCE:
+   case GL_LUMINANCE4:
+   case GL_LUMINANCE8:
+   case GL_LUMINANCE12:
+   case GL_LUMINANCE16:
+   case GL_COMPRESSED_LUMINANCE:
+      /* FIXME: This will report incorrect component sizes... */
+      SET_FORMAT( TMC_tformat_tw16, _mesa_texformat_rgb565 );
+      break;
+
+   case 2:
+   case GL_LUMINANCE_ALPHA:
+   case GL_LUMINANCE4_ALPHA4:
+   case GL_LUMINANCE6_ALPHA2:
+   case GL_LUMINANCE8_ALPHA8:
+   case GL_LUMINANCE12_ALPHA4:
+   case GL_LUMINANCE12_ALPHA12:
+   case GL_LUMINANCE16_ALPHA16:
+   case GL_COMPRESSED_LUMINANCE_ALPHA:
+      /* FIXME: This will report incorrect component sizes... */
+      SET_FORMAT( TMC_tformat_tw12, _mesa_texformat_argb4444 );
+      break;
+
+   case GL_INTENSITY:
+   case GL_INTENSITY4:
+   case GL_INTENSITY8:
+   case GL_INTENSITY12:
+   case GL_INTENSITY16:
+   case GL_COMPRESSED_INTENSITY:
+      /* FIXME: This will report incorrect component sizes... */
+      SET_FORMAT( TMC_tformat_tw12, _mesa_texformat_argb4444 );
+      break;
+
+   case GL_COLOR_INDEX:
+   case GL_COLOR_INDEX1_EXT:
+   case GL_COLOR_INDEX2_EXT:
+   case GL_COLOR_INDEX4_EXT:
+   case GL_COLOR_INDEX8_EXT:
+   case GL_COLOR_INDEX12_EXT:
+   case GL_COLOR_INDEX16_EXT:
+      SET_FORMAT( TMC_tformat_tw8, _mesa_texformat_ci8 );
+      break;
+
+   default:
+      fprintf( stderr, "bad texture format in mgaChooseTexFormat() %d",
+	       texImage->IntFormat );
+      return -1;
+   }
+
+   texImage->TexFormat = texFormat;
+
+   return ret;
+}
+
+
+/*
+ * mgaCreateTexObj
+ * Allocate space for and load the mesa images into the texture memory block.
+ * This will happen before drawing with a new texture, or drawing with a
+ * texture after it was swapped out or teximaged again.
+ */
+static void mgaCreateTexObj(mgaContextPtr mmesa,
+			    struct gl_texture_object *tObj)
+{
+   const GLint baseLevel = tObj->BaseLevel;
+   struct gl_texture_image *image = tObj->Image[baseLevel];
+   mgaTextureObjectPtr t;
+   int i, ofs;
+   int LastLevel;
+   int s, s2;
+   int tformat;
+
+   if (!image) return;
+
+   tObj->DriverData = t = calloc( 1, sizeof( *t ) );
+   if (!t) {
+      fprintf(stderr, "mgaCreateTexObj: Failed to malloc mgaTextureObject\n" );
+      return;
+   }
+
+   /* FIXME: Use the real DD interface...
+    */
+   tformat = mgaChooseTexFormat( mmesa, image, image->Format,
+				 GL_UNSIGNED_BYTE );
+   t->texelBytes = image->TexFormat->TexelBytes;
+
+   /* We are going to upload all levels that are present, even if
+    * later levels wouldn't be used by the current filtering mode.  This
+    * allows the filtering mode to change without forcing another upload
+    * of the images.
+    */
+   LastLevel = MGA_TEX_MAXLEVELS-1;
+
+   ofs = 0;
+   for ( i = 0 ; i <= LastLevel ; i++ ) {
+      if ( !tObj->Image[i] ) {
+	 LastLevel = i - 1;
+	 break;
+      }
+
+      t->offsets[i] = ofs;
+      t->dirty_images |= (1<<i);
+
+      ofs += ((MAX2( tObj->Image[i]->Width, 8 ) *
+	       MAX2( tObj->Image[i]->Height, 8 ) *
+	       t->texelBytes) + 31) & ~31;
+   }
+   t->totalSize = ofs;
+   t->lastLevel = LastLevel;
+   t->tObj = tObj;
+   t->ctx = mmesa;
+   t->age = 0;
+   t->bound = 0;
+   t->MemBlock = 0;
+
+   insert_at_tail(&(mmesa->SwappedOut), t);
+
+
+   /* setup hardware register values */
+   t->setup.texctl = TMC_takey_1 | TMC_tamask_0 | tformat;
+
+   if (image->WidthLog2 >= 3)
+      t->setup.texctl |= ((image->WidthLog2 - 3) << TMC_tpitch_SHIFT);
+   else
+      t->setup.texctl |= (TMC_tpitchlin_enable |
+			  (image->Width << TMC_tpitchext_SHIFT));
+
+
+   t->setup.texctl2 = TMC_ckstransdis_enable;
+
+   if ( mmesa->glCtx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR )
+      t->setup.texctl2 |= TMC_specen_enable;
+
+
+   t->setup.texfilter = (TF_minfilter_nrst |
+			 TF_magfilter_nrst |
+			 TF_filteralpha_enable |
+			 (0x10 << TF_fthres_SHIFT) |
+			 (LastLevel << TF_mapnb_SHIFT));
+
+   /* warp texture registers */
+   ofs = MGA_IS_G200(mmesa) ? 28 : 11;
+   s = image->Width;
+   s2 = image->WidthLog2;
+   t->setup.texwidth = (MGA_FIELD(TW_twmask, s - 1) |
+			MGA_FIELD(TW_rfw, (10 - s2 - 8) & 63 ) |
+			MGA_FIELD(TW_tw, (s2 + ofs ) | 0x40 ));
+
+
+   s = image->Height;
+   s2 = image->HeightLog2;
+   t->setup.texheight = (MGA_FIELD(TH_thmask, s - 1) |
+			 MGA_FIELD(TH_rfh, (10 - s2 - 8) & 63 ) |
+			 MGA_FIELD(TH_th, (s2 + ofs ) | 0x40 ));
+
+
+   /* set all the register values for filtering, border, etc */
+   mgaSetTexWrapping( t, tObj->WrapS, tObj->WrapT );
+   mgaSetTexFilter( t, tObj->MinFilter, tObj->MagFilter );
+   mgaSetTexBorderColor( t, tObj->_BorderChan );
+}
+
+
+
+
+static void mgaUpdateTextureEnvG200( GLcontext *ctx )
+{
+   struct gl_texture_object *tObj = ctx->Texture.Unit[0]._Current;
+   mgaTextureObjectPtr t;
+
+   if (!tObj || !tObj->DriverData)
+      return;
+
+   t = (mgaTextureObjectPtr)tObj->DriverData;
+
+   t->setup.texctl2 &= ~TMC_decalblend_enable;
+
+   switch (ctx->Texture.Unit[0].EnvMode) {
+   case GL_REPLACE:
+      t->setup.texctl &= ~TMC_tmodulate_enable;
+      break;
+   case GL_MODULATE:
+      t->setup.texctl |= TMC_tmodulate_enable;
+      break;
+   case GL_DECAL:
+      t->setup.texctl &= ~TMC_tmodulate_enable;
+      t->setup.texctl2 |= TMC_decalblend_enable;
+      break;
+   case GL_BLEND:
+      FALLBACK( ctx, MGA_FALLBACK_TEXTURE, GL_TRUE );
+      break;
+   default:
+      break;
+   }
+}
+
+static void mgaUpdateTextureEnvG400( GLcontext *ctx, int unit )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT( ctx );
+   GLuint *reg = ((GLuint *)&mmesa->setup.tdualstage0 + unit);
+   GLuint source = mmesa->tmu_source[unit];
+   struct gl_texture_object *tObj = ctx->Texture.Unit[source]._Current;
+   GLenum format;
+
+   if ( tObj != ctx->Texture.Unit[source].Current2D || !tObj ) 
+      return;
+
+   format = tObj->Image[tObj->BaseLevel]->Format;
+
+   switch (ctx->Texture.Unit[source].EnvMode) {
+   case GL_REPLACE:
+      if (format == GL_RGB || format == GL_LUMINANCE) {
+	 *reg = (TD0_color_sel_arg1 |
+                 TD0_alpha_arg2_diffuse |
+		 TD0_alpha_sel_arg2 );
+      }
+      else if (format == GL_ALPHA) {
+         *reg = (TD0_color_sel_arg2 |
+                 TD0_color_arg2_diffuse |
+                 TD0_alpha_sel_arg1 );
+      }
+      else {
+         *reg = (TD0_color_sel_arg1 |
+                 TD0_alpha_sel_arg1 );
+      }
+      break;
+
+   case GL_MODULATE:
+      if (unit == 0) {
+	 *reg = ( TD0_color_arg2_diffuse |
+		  TD0_color_sel_mul |
+		  TD0_alpha_arg2_diffuse |
+		  TD0_alpha_sel_mul);
+      }
+      else {
+	 *reg = ( TD0_color_arg2_prevstage |
+		  TD0_color_alpha_prevstage |
+		  TD0_color_sel_mul |
+		  TD0_alpha_arg2_prevstage |
+		  TD0_alpha_sel_mul);
+      }
+      break;
+   case GL_DECAL:
+      if (format == GL_RGB) {
+         if (unit == 0) {
+            *reg = (TD0_color_sel_arg1 |
+                    TD0_alpha_arg2_diffuse |
+                    TD0_alpha_sel_arg2 );
+         }
+         else {
+            *reg = (TD0_color_sel_arg1 |
+                    TD0_alpha_arg2_prevstage |
+                    TD0_alpha_sel_arg2 );
+         }
+      }
+      else if ( format == GL_RGBA ) {
+#if 0
+         if (unit == 0) {
+            /* this doesn't work */
+            *reg = (TD0_color_arg2_diffuse |
+                    TD0_color_alpha_currtex |
+                    TD0_color_alpha2inv_enable |
+                    TD0_color_arg2mul_alpha2 |
+                    TD0_color_arg1mul_alpha1 |
+                    TD0_color_blend_enable |
+                    TD0_color_arg1add_mulout |
+                    TD0_color_arg2add_mulout |
+                    TD0_color_add_add |
+                    TD0_color_sel_mul |
+                    TD0_alpha_arg2_diffuse |
+                    TD0_alpha_sel_arg2 );
+         }
+         else {
+            *reg = (TD0_color_arg2_prevstage |
+                    TD0_color_alpha_currtex |
+                    TD0_color_alpha2inv_enable |
+                    TD0_color_arg2mul_alpha2 |
+                    TD0_color_arg1mul_alpha1 |
+                    TD0_color_add_add |
+                    TD0_color_sel_add |
+                    TD0_alpha_arg2_prevstage |
+                    TD0_alpha_sel_arg2 );
+         }
+#else
+         /* s/w fallback, pretty sure we can't do in h/w */
+	 FALLBACK( ctx, MGA_FALLBACK_TEXTURE, GL_TRUE );
+	 if ( MGA_DEBUG & DEBUG_VERBOSE_FALLBACK )
+	    fprintf( stderr, "FALLBACK: GL_DECAL RGBA texture, unit=%d\n",
+		     unit );
+#endif
+      }
+      else {
+	 if (unit == 0) {
+	    *reg = ( TD0_color_arg2_diffuse |
+		     TD0_color_sel_arg2 |
+		     TD0_alpha_arg2_diffuse |
+		     TD0_alpha_sel_arg2);
+	 }
+	 else {
+	    *reg = ( TD0_color_arg2_prevstage |
+		     TD0_color_sel_arg2 |
+		     TD0_alpha_arg2_prevstage |
+		     TD0_alpha_sel_arg2);
+	 }
+      }
+      break;
+
+   case GL_ADD:
+      if (unit == 0) {
+         if (format == GL_INTENSITY)
+            *reg = ( TD0_color_arg2_diffuse |
+                     TD0_color_add_add |
+                     TD0_color_sel_add |
+                     TD0_alpha_arg2_diffuse |
+                     TD0_alpha_add_enable |
+                     TD0_alpha_sel_add);
+         else if (format == GL_ALPHA)
+            *reg = ( TD0_color_arg2_diffuse |
+                     TD0_color_sel_mul |
+                     TD0_alpha_arg2_diffuse |
+                     TD0_alpha_sel_mul);
+         else
+            *reg = ( TD0_color_arg2_diffuse |
+                     TD0_color_add_add |
+                     TD0_color_sel_add |
+                     TD0_alpha_arg2_diffuse |
+                     TD0_alpha_sel_mul);
+      }
+      else {
+         if (format == GL_INTENSITY) {
+            *reg = ( TD0_color_arg2_prevstage |
+                     TD0_color_add_add |
+                     TD0_color_sel_add |
+                     TD0_alpha_arg2_prevstage |
+                     TD0_alpha_add_enable |
+                     TD0_alpha_sel_add);
+         }
+         else if (format == GL_ALPHA) {
+            *reg = ( TD0_color_arg2_prevstage |
+                     TD0_color_sel_mul |
+                     TD0_alpha_arg2_prevstage |
+                     TD0_alpha_sel_mul);
+         }
+         else {
+            *reg = ( TD0_color_arg2_prevstage |
+                     TD0_color_alpha_prevstage |
+                     TD0_color_add_add |
+                     TD0_color_sel_add |
+                     TD0_alpha_arg2_prevstage |
+                     TD0_alpha_sel_mul);
+         }
+      }
+      break;
+
+   case GL_BLEND:
+      if (format == GL_ALPHA) {
+	 *reg = ( TD0_color_arg2_diffuse |
+		  TD0_color_sel_mul |
+		  TD0_alpha_arg2_diffuse |
+		  TD0_alpha_sel_mul);
+      }
+      else {
+	 FALLBACK( ctx, MGA_FALLBACK_TEXTURE, GL_TRUE );
+	 if ( MGA_DEBUG & DEBUG_VERBOSE_FALLBACK )
+	    fprintf( stderr, "FALLBACK: GL_BLEND envcolor=0x%08x\n",
+		     mmesa->envcolor );
+
+         /* Do singletexture GL_BLEND with 'all ones' env-color
+          * by using both texture units.  Multitexture gl_blend
+          * is a fallback.
+          */
+         if (unit == 0) {
+            /* Part 1: R1 = Rf ( 1 - Rt )
+             *         A1 = Af At
+             */
+            *reg = ( TD0_color_arg2_diffuse |
+                     TD0_color_arg1_inv_enable |
+                     TD0_color_sel_mul |
+                     TD0_alpha_arg2_diffuse |
+                     TD0_alpha_sel_arg1);
+         } else {
+            /* Part 2: R2 = R1 + Rt
+             *         A2 = A1
+             */
+            *reg = ( TD0_color_arg2_prevstage |
+                     TD0_color_add_add |
+                     TD0_color_sel_add |
+                     TD0_alpha_arg2_prevstage |
+                     TD0_alpha_sel_arg2);
+         }
+      }
+      break;
+   default:
+      break;
+   }
+}
+
+
+
+static void mgaUpdateTextureObject( GLcontext *ctx, int hw_unit )
+{
+   mgaTextureObjectPtr t;
+   struct gl_texture_object	*tObj;
+   GLuint enabled;
+   mgaContextPtr mmesa = MGA_CONTEXT( ctx );
+   GLuint gl_unit = mmesa->tmu_source[hw_unit];
+
+
+   enabled = ctx->Texture.Unit[gl_unit]._ReallyEnabled;
+   tObj = ctx->Texture.Unit[gl_unit]._Current;
+
+   if (enabled != TEXTURE_2D_BIT) {
+      if (enabled)
+	 FALLBACK( ctx, MGA_FALLBACK_TEXTURE, GL_TRUE );
+      return;
+   }
+
+   if (tObj->Image[tObj->BaseLevel]->Border > 0) {
+      FALLBACK( ctx, MGA_FALLBACK_TEXTURE, GL_TRUE );
+      if ( MGA_DEBUG & DEBUG_VERBOSE_FALLBACK )
+	 fprintf( stderr, "FALLBACK: texture border\n" );
+      return;
+   }
+
+   if ( !tObj->DriverData ) {
+      mgaCreateTexObj( mmesa, tObj );
+      if ( !tObj->DriverData ) {
+	 FALLBACK( ctx, MGA_FALLBACK_TEXTURE, GL_TRUE );
+	 return;		
+      }
+   }
+
+   t = (mgaTextureObjectPtr)tObj->DriverData;
+
+   if (t->dirty_images)
+      mmesa->dirty |= (MGA_UPLOAD_TEX0IMAGE << hw_unit);
+
+   mmesa->CurrentTexObj[hw_unit] = t;
+   t->bound |= hw_unit+1;
+
+/*     if (t->MemBlock) */
+/*        mgaUpdateTexLRU( mmesa, t ); */
+
+   t->setup.texctl2 &= ~TMC_dualtex_enable;
+   if ((ctx->Texture.Unit[0]._ReallyEnabled == TEXTURE_2D_BIT) &&
+       (ctx->Texture.Unit[1]._ReallyEnabled == TEXTURE_2D_BIT)) 
+      t->setup.texctl2 |= TMC_dualtex_enable;
+
+   t->setup.texctl2 &= ~TMC_specen_enable;
+   if (ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR)
+      t->setup.texctl2 |= TMC_specen_enable;
+}
+
+
+
+
+
+
+/* The G400 is now programmed quite differently wrt texture environment.
+ */
+void mgaUpdateTextureState( GLcontext *ctx )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT( ctx );
+   FALLBACK( ctx, MGA_FALLBACK_TEXTURE, GL_FALSE );
+
+   if (mmesa->CurrentTexObj[0]) {
+      mmesa->CurrentTexObj[0]->bound = 0;
+      mmesa->CurrentTexObj[0] = 0;
+   }
+
+   if (mmesa->CurrentTexObj[1]) {
+      mmesa->CurrentTexObj[1]->bound = 0;
+      mmesa->CurrentTexObj[1] = 0;
+   }
+
+   if (ctx->Texture.Unit[1]._ReallyEnabled == TEXTURE_2D_BIT) {
+      mmesa->tmu_source[0] = 1;
+   } else {
+      mmesa->tmu_source[0] = 0;
+   }
+
+   if (MGA_IS_G400(mmesa)) {
+      mgaUpdateTextureObject( ctx, 0 );
+      mgaUpdateTextureEnvG400( ctx, 0 );
+
+      mmesa->setup.tdualstage1 = mmesa->setup.tdualstage0;
+      
+      if ((ctx->Texture.Unit[0]._ReallyEnabled == TEXTURE_2D_BIT) &&
+          (ctx->Texture.Unit[1]._ReallyEnabled == TEXTURE_2D_BIT)) {
+	 mgaUpdateTextureObject( ctx, 1 );	
+	 mgaUpdateTextureEnvG400( ctx, 1 );
+	 mmesa->dirty |= MGA_UPLOAD_TEX1;
+      }
+   } else {
+      mgaUpdateTextureObject( ctx, 0 );
+      mgaUpdateTextureEnvG200( ctx );
+   }
+
+   mmesa->dirty |= MGA_UPLOAD_CONTEXT | MGA_UPLOAD_TEX0;
+
+   mmesa->setup.dwgctl &= DC_opcod_MASK;
+   mmesa->setup.dwgctl |= (ctx->Texture.Unit[0]._ReallyEnabled
+			   ? DC_opcod_texture_trap
+			   : DC_opcod_trap);
+}
+
+
+
+
+static void mgaDDTexEnv( GLcontext *ctx, GLenum target,
+			 GLenum pname, const GLfloat *param )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+
+
+   if (pname == GL_TEXTURE_ENV_MODE) {
+      /* force the texture state to be updated */
+      FLUSH_BATCH( MGA_CONTEXT(ctx) );
+      MGA_CONTEXT(ctx)->new_state |= (MGA_NEW_TEXTURE |
+				      MGA_NEW_ALPHA);
+   }
+   else if (pname == GL_TEXTURE_ENV_COLOR)
+   {
+      struct gl_texture_unit *texUnit =
+	 &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+      GLfloat *fc = texUnit->EnvColor;
+      GLubyte c[4];
+      GLuint col;
+
+      COPY_4V(c, fc);
+      col = mgaPackColor( mmesa->mgaScreen->cpp, c[0], c[1], c[2], c[3] );
+      mmesa->envcolor = (c[3]<<24) | (c[0]<<16) | (c[1]<<8) | (c[2]);
+
+      if (mmesa->setup.fcol != col) {
+	 FLUSH_BATCH(mmesa);
+	 mmesa->setup.fcol = col;
+	 mmesa->dirty |= MGA_UPLOAD_CONTEXT;
+
+	 mmesa->blend_flags &= ~MGA_BLEND_ENV_COLOR;
+
+	 /* Actually just require all four components to be
+	  * equal.  This permits a single-pass GL_BLEND.
+	  *
+	  * More complex multitexture/multipass fallbacks
+	  * for blend can be done later.
+	  */
+	 if (mmesa->envcolor != 0x0 && mmesa->envcolor != 0xffffffff)
+	    mmesa->blend_flags |= MGA_BLEND_ENV_COLOR;
+      }
+   }
+}
+
+
+static void mgaTexImage2D( GLcontext *ctx, GLenum target, GLint level,
+			    GLint internalFormat,
+			    GLint width, GLint height, GLint border,
+			    GLenum format, GLenum type, const GLvoid *pixels,
+			    const struct gl_pixelstore_attrib *packing,
+			    struct gl_texture_object *texObj,
+			    struct gl_texture_image *texImage )
+{
+   mgaTextureObjectPtr t = (mgaTextureObjectPtr) texObj->DriverData;
+   if (t) {
+      mgaDestroyTexObj( MGA_CONTEXT(ctx), t );
+      texObj->DriverData = 0;
+   }
+   _mesa_store_teximage2d( ctx, target, level, internalFormat,
+			   width, height, border, format, type,
+			   pixels, packing, texObj, texImage );
+}
+
+static void mgaTexSubImage2D( GLcontext *ctx, 
+			       GLenum target,
+			       GLint level,	
+			       GLint xoffset, GLint yoffset,
+			       GLsizei width, GLsizei height,
+			       GLenum format, GLenum type,
+			       const GLvoid *pixels,
+			       const struct gl_pixelstore_attrib *packing,
+			       struct gl_texture_object *texObj,
+			       struct gl_texture_image *texImage )
+{
+   mgaTextureObjectPtr t = (mgaTextureObjectPtr) texObj->DriverData;
+   if (t) {
+      mgaDestroyTexObj( MGA_CONTEXT(ctx), t );
+      texObj->DriverData = 0;
+   }
+   _mesa_store_texsubimage2d(ctx, target, level, xoffset, yoffset, width, 
+			     height, format, type, pixels, packing, texObj,
+			     texImage);
+
+}
+
+
+
+
+/*
+ * mgaTexParameter
+ * This just changes variables and flags for a state update, which
+ * will happen at the next mgaUpdateTextureState
+ */
+static void
+mgaDDTexParameter( GLcontext *ctx, GLenum target,
+		   struct gl_texture_object *tObj,
+		   GLenum pname, const GLfloat *params )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT( ctx );
+   mgaTextureObjectPtr t;
+
+   t = (mgaTextureObjectPtr) tObj->DriverData;
+
+   /* if we don't have a hardware texture, it will be automatically
+      created with current state before it is used, so we don't have
+      to do anything now */
+   if ( !t || !t->bound || target != GL_TEXTURE_2D ) {
+      return;
+   }
+
+   switch (pname) {
+   case GL_TEXTURE_MIN_FILTER:
+   case GL_TEXTURE_MAG_FILTER:
+      FLUSH_BATCH(mmesa);
+      mgaSetTexFilter( t, tObj->MinFilter, tObj->MagFilter );
+      break;
+
+   case GL_TEXTURE_WRAP_S:
+   case GL_TEXTURE_WRAP_T:
+      FLUSH_BATCH(mmesa);
+      mgaSetTexWrapping(t,tObj->WrapS,tObj->WrapT);
+      break;
+
+   case GL_TEXTURE_BORDER_COLOR:
+      FLUSH_BATCH(mmesa);
+      mgaSetTexBorderColor(t,tObj->_BorderChan);
+      break;
+
+   default:
+      return;
+   }
+
+   mmesa->new_state |= MGA_NEW_TEXTURE;
+}
+
+
+static void
+mgaDDBindTexture( GLcontext *ctx, GLenum target,
+		  struct gl_texture_object *tObj )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT( ctx );
+   int unit = ctx->Texture.CurrentUnit;
+
+   FLUSH_BATCH(mmesa);
+
+   if (mmesa->CurrentTexObj[unit]) {
+      mmesa->CurrentTexObj[unit]->bound &= ~(unit+1);
+      mmesa->CurrentTexObj[unit] = 0;
+   }
+
+   /* force the texture state to be updated
+    */
+   MGA_CONTEXT(ctx)->new_state |= MGA_NEW_TEXTURE;
+}
+
+
+static void
+mgaDDDeleteTexture( GLcontext *ctx, struct gl_texture_object *tObj )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT( ctx );
+   mgaTextureObjectPtr t = (mgaTextureObjectPtr)tObj->DriverData;
+
+   if ( t ) {
+      if (mmesa) {
+         if (t->bound) {
+            FLUSH_BATCH(mmesa);
+            if (t->bound & TEX_0) mmesa->CurrentTexObj[0] = 0;
+            if (t->bound & TEX_1) mmesa->CurrentTexObj[1] = 0;
+         }
+         mmesa->new_state |= MGA_NEW_TEXTURE;
+      }
+
+      mgaDestroyTexObj( mmesa, t );
+   }
+}
+
+
+static GLboolean
+mgaDDIsTextureResident( GLcontext *ctx, struct gl_texture_object *t )
+{
+   mgaTextureObjectPtr mt = (mgaTextureObjectPtr)t->DriverData;
+   return mt && mt->MemBlock;
+}
+
+
+void
+mgaDDInitTextureFuncs( GLcontext *ctx )
+{
+   ctx->Driver.TexEnv = mgaDDTexEnv;
+
+   ctx->Driver.ChooseTextureFormat = _mesa_choose_tex_format;
+   ctx->Driver.TexImage1D = _mesa_store_teximage1d;
+   ctx->Driver.TexImage2D = mgaTexImage2D;
+   ctx->Driver.TexImage3D = _mesa_store_teximage3d;
+   ctx->Driver.TexSubImage1D = _mesa_store_texsubimage1d;
+   ctx->Driver.TexSubImage2D = mgaTexSubImage2D;
+   ctx->Driver.TexSubImage3D = _mesa_store_texsubimage3d;
+   ctx->Driver.CopyTexImage1D = _swrast_copy_teximage1d;
+   ctx->Driver.CopyTexImage2D = _swrast_copy_teximage2d;
+   ctx->Driver.CopyTexSubImage1D = _swrast_copy_texsubimage1d;
+   ctx->Driver.CopyTexSubImage2D = _swrast_copy_texsubimage2d;
+   ctx->Driver.CopyTexSubImage3D = _swrast_copy_texsubimage3d;
+   ctx->Driver.TestProxyTexImage = _mesa_test_proxy_teximage;
+
+   ctx->Driver.BindTexture = mgaDDBindTexture;
+   ctx->Driver.DeleteTexture = mgaDDDeleteTexture;
+   ctx->Driver.TexParameter = mgaDDTexParameter;
+   ctx->Driver.UpdateTexturePalette = 0;
+   ctx->Driver.IsTextureResident = mgaDDIsTextureResident;
+}

src/mesa/drivers/dri/mga/mgatex.h

@@ -0,0 +1,62 @@
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgatex.h,v 1.7 2002/10/30 12:51:36 alanh Exp $ */
+/*
+ * Copyright 2000-2001 VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#ifndef MGATEX_INC
+#define MGATEX_INC
+
+#include "mgacontext.h"
+
+typedef struct mga_texture_object_s *mgaTextureObjectPtr;
+
+
+/* Called before a primitive is rendered to make sure the texture
+ * state is properly setup.  Texture residence is checked later
+ * when we grab the lock.
+ */
+void mgaUpdateTextureState( GLcontext *ctx );
+
+void mgaConvertTexture( GLuint *dest, int texelBytes,
+			struct gl_texture_image *image,
+			int x, int y, int width, int height );
+
+
+void mgaUploadSubImageLocked( mgaContextPtr mmesa,
+			      mgaTextureObjectPtr t,
+			      int level,
+			      int x, int y, int width, int height );
+
+int mgaUploadTexImages( mgaContextPtr mmesa, mgaTextureObjectPtr t );
+
+void mgaDestroyTexObj( mgaContextPtr mmesa, mgaTextureObjectPtr t );
+
+void mgaAgeTextures( mgaContextPtr mmesa, int heap );
+
+void mgaDDInitTextureFuncs( GLcontext *ctx );
+
+
+#endif

src/mesa/drivers/dri/mga/mgatexcnv.c

@@ -0,0 +1,256 @@
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgatexcnv.c,v 1.3 2002/10/30 12:51:36 alanh Exp $ */
+/*
+ * Copyright 2000-2001 VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <GL/gl.h>
+
+#include "mm.h"
+#include "mgacontext.h"
+#include "mgatex.h"
+
+
+/*
+ * mgaConvertTexture
+ * Converts a mesa format texture to the appropriate hardware format
+ * Note that sometimes width may be larger than the texture, like 64x1
+ * for an 8x8 texture.  This happens when we have to crutch the pitch
+ * limits of the mga by uploading a block of texels as a single line.
+ */
+void mgaConvertTexture( GLuint *destPtr, int texelBytes,
+			struct gl_texture_image *image,
+			int x, int y, int width, int height )
+{
+   register int		i, j;
+   GLubyte		*src;
+   int stride;
+
+   if (0)
+      fprintf(stderr, "texture image %p\n", image->Data);
+
+   if (image->Data == 0)
+      return;
+
+   /* FIXME: g400 luminance_alpha internal format */
+   switch (texelBytes) {
+   case 1:
+      switch (image->Format) {
+      case GL_COLOR_INDEX:
+      case GL_INTENSITY:
+      case GL_LUMINANCE:
+      case GL_ALPHA:
+	 src = (GLubyte *)image->Data + ( y * image->Width + x );
+	 stride = (image->Width - width);
+	 for ( i = height ; i ; i-- ) {
+	    for ( j = width >> 2  ; j ; j-- ) {
+
+	       *destPtr++ = src[0] | ( src[1] << 8 ) | ( src[2] << 16 ) | ( src[3] << 24 );
+	       src += 4;
+	    }
+	    src += stride;
+	 }
+	 break;
+      default:
+	 goto format_error;
+      }
+      break;
+   case 2:
+      switch (image->Format) {
+      case GL_RGB:
+	 src = (GLubyte *)image->Data + ( y * image->Width + x ) * 3;
+	 stride = (image->Width - width) * 3;
+	 for ( i = height ; i ; i-- ) {
+	    for ( j = width >> 1  ; j ; j-- ) {
+
+	       *destPtr++ = MGAPACKCOLOR565(src[0],src[1],src[2]) |
+		  ( MGAPACKCOLOR565(src[3],src[4],src[5]) << 16 );
+	       src += 6;
+	    }
+	    src += stride;
+	 }
+	 break;
+      case GL_RGBA:
+	 src = (GLubyte *)image->Data + ( y * image->Width + x ) * 4;
+	 stride = (image->Width - width) * 4;
+	 for ( i = height ; i ; i-- ) {
+	    for ( j = width >> 1  ; j ; j-- ) {
+
+	       *destPtr++ = MGAPACKCOLOR4444(src[0],src[1],src[2],src[3]) |
+		  ( MGAPACKCOLOR4444(src[4],src[5],src[6],src[7]) << 16 );
+	       src += 8;
+	    }
+	    src += stride;
+	 }
+	 break;
+      case GL_LUMINANCE:
+	 src = (GLubyte *)image->Data + ( y * image->Width + x );
+	 stride = (image->Width - width);
+	 for ( i = height ; i ; i-- ) {
+	    for ( j = width >> 1  ; j ; j-- ) {
+	       /* FIXME: should probably use 555 texture to get true grey */
+	       *destPtr++ = MGAPACKCOLOR565(src[0],src[0],src[0]) |
+		  ( MGAPACKCOLOR565(src[1],src[1],src[1]) << 16 );
+	       src += 2;
+	    }
+	    src += stride;
+	 }
+	 break;
+      case GL_INTENSITY:
+	 src = (GLubyte *)image->Data + ( y * image->Width + x );
+	 stride = (image->Width - width);
+	 for ( i = height ; i ; i-- ) {
+	    for ( j = width >> 1  ; j ; j-- ) {
+
+	       *destPtr++ = MGAPACKCOLOR4444(src[0],src[0],src[0],src[0]) |
+		  ( MGAPACKCOLOR4444(src[1],src[1],src[1],src[1]) << 16 );
+	       src += 2;
+	    }
+	    src += stride;
+	 }
+	 break;
+      case GL_ALPHA:
+	 src = (GLubyte *)image->Data + ( y * image->Width + x );
+	 stride = (image->Width - width);
+	 for ( i = height ; i ; i-- ) {
+	    for ( j = width >> 1  ; j ; j-- ) {
+
+	       *destPtr++ = MGAPACKCOLOR4444(255,255,255,src[0]) |
+		  ( MGAPACKCOLOR4444(255,255,255,src[1]) << 16 );
+	       src += 2;
+	    }
+	    src += stride;
+	 }
+	 break;
+      case GL_LUMINANCE_ALPHA:
+	 src = (GLubyte *)image->Data + ( y * image->Width + x ) * 2;
+	 stride = (image->Width - width) * 2;
+	 for ( i = height ; i ; i-- ) {
+	    for ( j = width >> 1  ; j ; j-- ) {
+
+	       *destPtr++ = MGAPACKCOLOR4444(src[0],src[0],src[0],src[1]) |
+		  ( MGAPACKCOLOR4444(src[2],src[2],src[2],src[3]) << 16 );
+	       src += 4;
+	    }
+	    src += stride;
+	 }
+	 break;
+      default:
+	 goto format_error;
+      }
+      break;
+   case 4:
+      switch (image->Format) {
+      case GL_RGB:
+	 src = (GLubyte *)image->Data + (  y * image->Width + x ) * 3;
+	 stride = (image->Width - width) * 3;
+	 for ( i = height ; i ; i-- ) {
+	    for ( j = width ; j ; j-- ) {
+
+	       *destPtr++ = MGAPACKCOLOR8888(src[0],src[1],src[2], 255);
+	       src += 3;
+	    }
+	    src += stride;
+	 }
+	 break;
+      case GL_RGBA:
+	 src = (GLubyte *)image->Data + (  y * image->Width + x ) * 4;
+	 stride = (image->Width - width) * 4;
+	 for ( i = height ; i ; i-- ) {
+	    for ( j = width  ; j ; j-- ) {
+
+	       *destPtr++ = MGAPACKCOLOR8888(src[0],src[1],src[2],src[3]);
+	       src += 4;
+	    }
+	    src += stride;
+	 }
+	 break;
+      case GL_LUMINANCE:
+	 src = (GLubyte *)image->Data + ( y * image->Width + x );
+	 stride = (image->Width - width);
+	 for ( i = height ; i ; i-- ) {
+	    for ( j = width ; j ; j-- ) {
+
+	       *destPtr++ = MGAPACKCOLOR8888(src[0],src[0],src[0], 255);
+	       src += 1;
+	    }
+	    src += stride;
+	 }
+	 break;
+      case GL_INTENSITY:
+	 src = (GLubyte *)image->Data + (  y * image->Width + x );
+	 stride = (image->Width - width);
+	 for ( i = height ; i ; i-- ) {
+	    for ( j = width ; j ; j-- ) {
+
+	       *destPtr++ = MGAPACKCOLOR8888(src[0],src[0],src[0],src[0]);
+	       src += 1;
+	    }
+	    src += stride;
+	 }
+	 break;
+      case GL_ALPHA:
+	 src = (GLubyte *)image->Data + ( y * image->Width + x );
+	 stride = (image->Width - width);
+	 for ( i = height ; i ; i-- ) {
+	    for ( j = width ; j ; j-- ) {
+
+	       *destPtr++ = MGAPACKCOLOR8888(255,255,255,src[0]);
+	       src += 1;
+	    }
+	    src += stride;
+	 }
+	 break;
+      case GL_LUMINANCE_ALPHA:
+	 src = (GLubyte *)image->Data + ( y * image->Width + x ) * 2;
+	 stride = (image->Width - width) * 2;
+	 for ( i = height ; i ; i-- ) {
+	    for ( j = width ; j ; j-- ) {
+
+	       *destPtr++ = MGAPACKCOLOR8888(src[0],src[0],
+					     src[0],src[1]);
+	       src += 2;
+	    }
+	    src += stride;
+	 }
+	 break;
+      default:
+	 goto format_error;
+      }
+      break;
+   default:
+      goto format_error;
+   }
+
+   return;
+
+ format_error:
+
+   fprintf(stderr, "Unsupported texelBytes %i, image->Format %i\n",
+	   (int)texelBytes, (int)image->Format );
+}

src/mesa/drivers/dri/mga/mgatexmem.c

@@ -0,0 +1,564 @@
+/*
+ * Copyright 2000-2001 VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgatexmem.c,v 1.7 2002/10/30 12:51:36 alanh Exp $ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <GL/gl.h>
+
+#include "mm.h"
+#include "mgacontext.h"
+#include "mgatex.h"
+#include "mgaregs.h"
+#include "mgaioctl.h"
+
+/*#include "mem.h" */
+#include "simple_list.h"
+
+static void
+mgaSwapOutTexObj(mgaContextPtr mmesa, mgaTextureObjectPtr t)
+{
+   if (t->MemBlock) {
+      mmFreeMem(t->MemBlock);
+      t->MemBlock = 0;
+
+      if (t->age > mmesa->dirtyAge)
+	 mmesa->dirtyAge = t->age;
+   }
+
+   t->dirty_images = ~0;
+   move_to_tail(&(mmesa->SwappedOut), t);
+}
+
+static void
+mgaPrintLocalLRU( mgaContextPtr mmesa, int heap )
+{
+   mgaTextureObjectPtr t;
+   int sz = 1 << (mmesa->mgaScreen->logTextureGranularity[heap]);
+
+   fprintf(stderr, "\nLocal LRU, heap %d:\n", heap);
+
+   foreach( t, &(mmesa->TexObjList[heap]) ) {
+      if (!t->tObj)
+	 fprintf(stderr, "Placeholder %d at %x sz %x\n",
+		 t->MemBlock->ofs / sz,
+		 t->MemBlock->ofs,
+		 t->MemBlock->size);
+      else
+	 fprintf(stderr, "Texture (bound %d) at %x sz %x\n",
+		 t->bound,
+		 t->MemBlock->ofs,
+		 t->MemBlock->size);
+   }
+
+   fprintf(stderr, "\n\n");
+}
+
+static void
+mgaPrintGlobalLRU( mgaContextPtr mmesa, int heap )
+{
+   int i, j;
+   drmTextureRegion *list = mmesa->sarea->texList[heap];
+
+   fprintf(stderr, "\nGlobal LRU, heap %d list %p:\n", heap, list);
+
+   for (i = 0, j = MGA_NR_TEX_REGIONS ; i < MGA_NR_TEX_REGIONS ; i++) {
+      fprintf(stderr, "list[%d] age %d next %d prev %d\n",
+	      j, list[j].age, list[j].next, list[j].prev);
+      j = list[j].next;
+      if (j == MGA_NR_TEX_REGIONS) break;
+   }
+
+   if (j != MGA_NR_TEX_REGIONS) {
+      fprintf(stderr, "Loop detected in global LRU\n\n\n");
+      for (i = 0 ; i < MGA_NR_TEX_REGIONS ; i++) {
+	 fprintf(stderr, "list[%d] age %d next %d prev %d\n",
+		 i, list[i].age, list[i].next, list[i].prev);
+      }
+   }
+
+   fprintf(stderr, "\n\n");
+}
+
+
+static void mgaResetGlobalLRU( mgaContextPtr mmesa, GLuint heap )
+{
+   drmTextureRegion *list = mmesa->sarea->texList[heap];
+   int sz = 1 << mmesa->mgaScreen->logTextureGranularity[heap];
+   int i;
+
+   mmesa->texAge[heap] = ++mmesa->sarea->texAge[heap];
+
+   if (0) fprintf(stderr, "mgaResetGlobalLRU %d\n", (int)heap);
+
+   /* (Re)initialize the global circular LRU list.  The last element
+    * in the array (MGA_NR_TEX_REGIONS) is the sentinal.  Keeping it
+    * at the end of the array allows it to be addressed rationally
+    * when looking up objects at a particular location in texture
+    * memory.
+    */
+   for (i = 0 ; (i+1) * sz <= mmesa->mgaScreen->textureSize[heap] ; i++) {
+      list[i].prev = i-1;
+      list[i].next = i+1;
+      list[i].age = mmesa->sarea->texAge[heap];
+   }
+
+   i--;
+   list[0].prev = MGA_NR_TEX_REGIONS;
+   list[i].prev = i-1;
+   list[i].next = MGA_NR_TEX_REGIONS;
+   list[MGA_NR_TEX_REGIONS].prev = i;
+   list[MGA_NR_TEX_REGIONS].next = 0;
+
+}
+
+
+static void mgaUpdateTexLRU( mgaContextPtr mmesa, mgaTextureObjectPtr t )
+{
+   int i;
+   int heap = t->heap;
+   int logsz = mmesa->mgaScreen->logTextureGranularity[heap];
+   int start = t->MemBlock->ofs >> logsz;
+   int end = (t->MemBlock->ofs + t->MemBlock->size - 1) >> logsz;
+   drmTextureRegion *list = mmesa->sarea->texList[heap];
+
+   mmesa->texAge[heap] = ++mmesa->sarea->texAge[heap];
+
+   if (!t->MemBlock) {
+      fprintf(stderr, "no memblock\n\n");
+      return;
+   }
+
+   /* Update our local LRU
+    */
+   move_to_head( &(mmesa->TexObjList[heap]), t );
+
+
+   if (0)
+      fprintf(stderr, "mgaUpdateTexLRU heap %d list %p\n", heap, list);
+
+
+   /* Update the global LRU
+    */
+   for (i = start ; i <= end ; i++) {
+
+      list[i].in_use = 1;
+      list[i].age = mmesa->texAge[heap];
+
+      /* remove_from_list(i)
+       */
+      list[(unsigned)list[i].next].prev = list[i].prev;
+      list[(unsigned)list[i].prev].next = list[i].next;
+
+      /* insert_at_head(list, i)
+       */
+      list[i].prev = MGA_NR_TEX_REGIONS;
+      list[i].next = list[MGA_NR_TEX_REGIONS].next;
+      list[(unsigned)list[MGA_NR_TEX_REGIONS].next].prev = i;
+      list[MGA_NR_TEX_REGIONS].next = i;
+   }
+
+   if (0) {
+      mgaPrintGlobalLRU(mmesa, t->heap);
+      mgaPrintLocalLRU(mmesa, t->heap);
+   }
+}
+
+/* Called for every shared texture region which has increased in age
+ * since we last held the lock.
+ *
+ * Figures out which of our textures have been ejected by other clients,
+ * and pushes a placeholder texture onto the LRU list to represent
+ * the other client's textures.
+ */
+static void mgaTexturesGone( mgaContextPtr mmesa,
+			     GLuint heap,
+			     GLuint offset,
+			     GLuint size,
+			     GLuint in_use )
+{
+   mgaTextureObjectPtr t, tmp;
+
+
+
+   foreach_s ( t, tmp, &(mmesa->TexObjList[heap]) ) {
+
+      if (t->MemBlock->ofs >= offset + size ||
+	  t->MemBlock->ofs + t->MemBlock->size <= offset)
+	 continue;
+
+
+
+
+      /* It overlaps - kick it off.  Need to hold onto the currently bound
+       * objects, however.
+       */
+      if (t->bound)
+	 mgaSwapOutTexObj( mmesa, t );
+      else
+	 mgaDestroyTexObj( mmesa, t );
+   }
+
+
+   if (in_use) {
+      t = (mgaTextureObjectPtr) calloc(1, sizeof(*t));
+      if (!t) return;
+
+      t->heap = heap;
+      t->MemBlock = mmAllocMem( mmesa->texHeap[heap], size, 0, offset);
+      if (!t->MemBlock) {
+	 fprintf(stderr, "Couldn't alloc placeholder sz %x ofs %x\n",
+		 (int)size, (int)offset);
+	 mmDumpMemInfo( mmesa->texHeap[heap]);
+	 return;
+      }
+      insert_at_head( &(mmesa->TexObjList[heap]), t );
+   }
+}
+
+
+void mgaAgeTextures( mgaContextPtr mmesa, int heap )
+{
+   MGASAREAPrivPtr sarea = mmesa->sarea;
+   int sz = 1 << (mmesa->mgaScreen->logTextureGranularity[heap]);
+   int idx, nr = 0;
+
+   /* Have to go right round from the back to ensure stuff ends up
+    * LRU in our local list...  Fix with a cursor pointer.
+    */
+   for (idx = sarea->texList[heap][MGA_NR_TEX_REGIONS].prev ;
+	idx != MGA_NR_TEX_REGIONS && nr < MGA_NR_TEX_REGIONS ;
+	idx = sarea->texList[heap][idx].prev, nr++)
+   {
+      /* If switching texturing schemes, then the SAREA might not
+       * have been properly cleared, so we need to reset the
+       * global texture LRU.
+       */
+      if ( idx * sz > mmesa->mgaScreen->textureSize[heap] ) {
+         nr = MGA_NR_TEX_REGIONS;
+         break;
+      }
+
+      if (sarea->texList[heap][idx].age > mmesa->texAge[heap]) {
+        mgaTexturesGone(mmesa, heap, idx * sz, sz,
+                        sarea->texList[heap][idx].in_use);
+      }
+   }
+
+   if (nr == MGA_NR_TEX_REGIONS) {
+      mgaTexturesGone(mmesa, heap, 0,
+		      mmesa->mgaScreen->textureSize[heap], 0);
+      mgaResetGlobalLRU( mmesa, heap );
+   }
+
+
+   if (0) {
+      mgaPrintGlobalLRU( mmesa, heap );
+      mgaPrintLocalLRU( mmesa, heap );
+   }
+
+   mmesa->texAge[heap] = sarea->texAge[heap];
+   mmesa->dirty |= MGA_UPLOAD_TEX0IMAGE | MGA_UPLOAD_TEX1IMAGE;
+}
+
+/*
+ * mgaUploadSubImageLocked
+ *
+ * Perform an iload based update of a resident buffer.  This is used for
+ * both initial loading of the entire image, and texSubImage updates.
+ *
+ * Performed with the hardware lock held.
+ */
+void mgaUploadSubImageLocked( mgaContextPtr mmesa,
+			      mgaTextureObjectPtr t,
+			      int level,
+			      int x, int y, int width, int height )
+{
+   int		x2;
+   int		dwords;
+   int		offset;
+   struct gl_texture_image *image;
+   int		texelBytes, texelsPerDword, texelMaccess, length;
+
+   if ( level < 0 || level >= MGA_TEX_MAXLEVELS )
+      return;
+
+   image = t->tObj->Image[level];
+   if ( !image ) return;
+
+
+   if (image->Data == 0) {
+      fprintf(stderr, "null texture image data tObj %p level %d\n",
+	      t->tObj, level);
+      return;
+   }
+
+
+   /* find the proper destination offset for this level */
+   offset = (t->MemBlock->ofs +
+	     t->offsets[level]);
+
+
+   texelBytes = t->texelBytes;
+   switch( texelBytes ) {
+   case 1:
+      texelsPerDword = 4;
+      texelMaccess = 0;
+      break;
+   case 2:
+      texelsPerDword = 2;
+      texelMaccess = 1;
+      break;
+   case 4:
+      texelsPerDword = 1;
+      texelMaccess = 2;
+      break;
+   default:
+      return;
+   }
+
+
+   /* We can't do a subimage update if pitch is < 32 texels due
+    * to hardware XY addressing limits, so we will need to
+    * linearly upload all modified rows.
+    */
+   if ( image->Width < 32 ) {
+      x = 0;
+      width = image->Width * height;
+      height = 1;
+
+      /* Assume that 1x1 textures aren't going to cause a
+       * bus error if we read up to four texels from that
+       * location:
+       */
+/*        if ( width < texelsPerDword ) { */
+/*  	 width = texelsPerDword; */
+/*        } */
+   } else {
+      /* pad the size out to dwords.  The image is a pointer
+	 to the entire image, so we can safely reference
+	 outside the x,y,width,height bounds if we need to */
+      x2 = x + width;
+      x2 = (x2 + (texelsPerDword-1)) & ~(texelsPerDword-1);
+      x = (x + (texelsPerDword-1)) & ~(texelsPerDword-1);
+      width = x2 - x;
+   }
+
+   /* we may not be able to upload the entire texture in one
+      batch due to register limits or dma buffer limits.
+      Recursively split it up. */
+   while ( 1 ) {
+      dwords = height * width / texelsPerDword;
+      if ( dwords * 4 <= MGA_BUFFER_SIZE ) {
+	 break;
+      }
+
+      mgaUploadSubImageLocked( mmesa, t, level, x, y,
+			       width, height >> 1 );
+      y += ( height >> 1 );
+      height -= ( height >> 1 );
+   }
+
+   length = dwords * 4;
+
+   /* Fill in the secondary buffer with properly converted texels
+    * from the mesa buffer. */
+   /* FIXME: the sync for direct copy reduces speed.. */
+   if(t->heap == MGA_CARD_HEAP  ) {
+      mgaGetILoadBufferLocked( mmesa );
+      mgaConvertTexture( (GLuint *)mmesa->iload_buffer->address,
+			 texelBytes, image, x, y, width, height );
+      if(length < 64) length = 64;
+
+      if (0)
+	 fprintf(stderr, "TexelBytes : %d, offset: %d, length : %d\n",
+		 texelBytes,
+		 mmesa->mgaScreen->textureOffset[t->heap] +
+		 offset +
+		 y * width * 4/texelsPerDword,
+		 length);
+
+      mgaFireILoadLocked( mmesa,
+			  mmesa->mgaScreen->textureOffset[t->heap] +
+			  offset +
+			  y * width * 4/texelsPerDword,
+			  length);
+   } else {
+      /* This works, is slower for uploads to card space and needs
+       * additional synchronization with the dma stream.
+       */
+       
+      UPDATE_LOCK(mmesa, DRM_LOCK_FLUSH | DRM_LOCK_QUIESCENT);
+      mgaConvertTexture( (GLuint *)
+			 (mmesa->mgaScreen->texVirtual[t->heap] +
+			  offset +
+			  y * width * 4/texelsPerDword),
+			 texelBytes, image, x, y, width, height );
+   }
+}
+
+
+static void mgaUploadTexLevel( mgaContextPtr mmesa,
+			       mgaTextureObjectPtr t,
+			       int l )
+{
+   mgaUploadSubImageLocked( mmesa,
+			    t,
+			    l,
+			    0, 0,
+			    t->tObj->Image[l]->Width,
+			    t->tObj->Image[l]->Height);
+}
+
+
+
+
+#if 0
+static void mgaMigrateTexture( mgaContextPtr mmesa, mgaTextureObjectPtr t )
+{
+	/* NOT DONE */
+}
+#endif
+
+
+static int mgaChooseTexHeap( mgaContextPtr mmesa, mgaTextureObjectPtr t )
+{
+   int freeagp, freecard;
+   int fitincard, fitinagp;
+   int totalcard, totalagp;
+   TMemBlock *b;
+
+   totalcard = totalagp = fitincard = fitinagp = freeagp = freecard = 0;
+
+   b = mmesa->texHeap[0];
+   while(b)
+   {
+     totalcard += b->size;
+     if(b->free) if(t->totalSize <= b->size)fitincard = 1;
+     b = b->next;
+   }
+
+   b = mmesa->texHeap[1];
+   while(b)
+   {
+     totalagp += b->size;
+     if(b->free)  if(t->totalSize <= b->size)fitinagp = 1;
+     b = b->next;
+   }
+
+   if(fitincard)return 0;
+   if(fitinagp)return 1;
+
+   if(totalcard && totalagp)
+   {
+     int ages;
+     int ratio = (totalcard > totalagp) ? totalcard / totalagp : totalagp / totalcard;
+     ages = mmesa->sarea->texAge[0] + mmesa->sarea->texAge[1];
+     if( (ages % ratio) == 0)return totalcard > totalagp ? 1 : 0;
+     else return totalcard > totalagp ? 0 : 1;
+   }
+
+   if(totalagp) return 1;
+   return 0;
+}
+
+
+int mgaUploadTexImages( mgaContextPtr mmesa, mgaTextureObjectPtr t )
+{
+   int heap;
+   int i;
+   int ofs;
+
+   heap = t->heap = mgaChooseTexHeap( mmesa, t );
+
+   /* Do we need to eject LRU texture objects?
+    */
+   if (!t->MemBlock) {
+      while (1)
+      {
+	 mgaTextureObjectPtr tmp = mmesa->TexObjList[heap].prev;
+
+	 t->MemBlock = mmAllocMem( mmesa->texHeap[heap],
+				   t->totalSize,
+				   6, 0 );
+	 if (t->MemBlock)
+	    break;
+
+	 if (mmesa->TexObjList[heap].prev->bound) {
+	    fprintf(stderr, "Hit bound texture in upload\n");
+	    return -1;
+	 }
+
+	 if (mmesa->TexObjList[heap].prev ==
+	     &(mmesa->TexObjList[heap]))
+	 {
+	    fprintf(stderr, "Failed to upload texture, sz %d\n", t->totalSize);
+	    mmDumpMemInfo( mmesa->texHeap[heap] );
+	    return -1;
+	 }
+
+	 mgaDestroyTexObj( mmesa, tmp );
+      }
+
+      ofs = t->MemBlock->ofs
+	 + mmesa->mgaScreen->textureOffset[heap]
+	 ;
+
+      t->setup.texorg  = ofs;
+      t->setup.texorg1 = ofs + t->offsets[1];
+      t->setup.texorg2 = ofs + t->offsets[2];
+      t->setup.texorg3 = ofs + t->offsets[3];
+      t->setup.texorg4 = ofs + t->offsets[4];
+
+      mmesa->dirty |= MGA_UPLOAD_CONTEXT;
+   }
+
+   /* Let the world know we've used this memory recently.
+    */
+   mgaUpdateTexLRU( mmesa, t );
+
+
+   if (MGA_DEBUG&DEBUG_VERBOSE_LRU)
+      fprintf(stderr, "dispatch age: %d age freed memory: %d\n",
+	      GET_DISPATCH_AGE(mmesa), mmesa->dirtyAge);
+
+   if (mmesa->dirtyAge >= GET_DISPATCH_AGE(mmesa))
+      mgaWaitAgeLocked( mmesa, mmesa->dirtyAge );
+
+   if (t->dirty_images) {
+      if (MGA_DEBUG&DEBUG_VERBOSE_LRU)
+	 fprintf(stderr, "*");
+
+      for (i = 0 ; i <= t->lastLevel ; i++)
+	 if (t->dirty_images & (1<<i))
+	    mgaUploadTexLevel( mmesa, t, i );
+   }
+
+
+   t->dirty_images = 0;
+   return 0;
+}

src/mesa/drivers/dri/mga/mgatris.c

@@ -0,0 +1,915 @@
+/*
+ * Copyright 2000-2001 VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgatris.c,v 1.10 2002/10/30 12:51:36 alanh Exp $ */
+
+#include <stdio.h>
+#include <math.h>
+
+#include "mtypes.h"
+#include "macros.h"
+#include "colormac.h"
+#include "swrast/swrast.h"
+#include "swrast_setup/swrast_setup.h"
+#include "tnl/t_context.h"
+#include "tnl/t_pipeline.h"
+
+#include "mm.h"
+#include "mgacontext.h"
+#include "mgaioctl.h"
+#include "mgatris.h"
+#include "mgavb.h"
+#include "mgastate.h"
+
+
+static void mgaRenderPrimitive( GLcontext *ctx, GLenum prim );
+
+/***********************************************************************
+ *                 Functions to draw basic primitives                  *
+ ***********************************************************************/
+
+
+#if defined (USE_X86_ASM)
+#define EMIT_VERT( j, vb, vertex_size, v )		\
+do {	int __tmp;					\
+	__asm__ __volatile__( "rep ; movsl"		\
+			 : "=%c" (j), "=D" (vb), "=S" (__tmp)		\
+			 : "0" (vertex_size), 		\
+			   "D" ((long)vb), 		\
+			   "S" ((long)v));		\
+} while (0)
+#else
+#define EMIT_VERT( j, vb, vertex_size, v )	\
+do {						\
+   for ( j = 0 ; j < vertex_size ; j++ )	\
+      vb[j] = (v)->ui[j];			\
+   vb += vertex_size;				\
+} while (0)
+#endif
+
+static void __inline__ mga_draw_triangle( mgaContextPtr mmesa,
+					   mgaVertexPtr v0,
+					   mgaVertexPtr v1,
+					   mgaVertexPtr v2 )
+{
+   GLuint vertex_size = mmesa->vertex_size;
+   GLuint *vb = mgaAllocDmaLow( mmesa, 3 * 4 * vertex_size );
+   int j;
+
+   EMIT_VERT( j, vb, vertex_size, v0 );
+   EMIT_VERT( j, vb, vertex_size, v1 );
+   EMIT_VERT( j, vb, vertex_size, v2 );
+}
+
+
+static void __inline__ mga_draw_quad( mgaContextPtr mmesa,
+				       mgaVertexPtr v0,
+				       mgaVertexPtr v1,
+				       mgaVertexPtr v2,
+				       mgaVertexPtr v3 )
+{
+   GLuint vertex_size = mmesa->vertex_size;
+   GLuint *vb = mgaAllocDmaLow( mmesa, 6 * 4 * vertex_size );
+   int j;
+
+   EMIT_VERT( j, vb, vertex_size, v0 );
+   EMIT_VERT( j, vb, vertex_size, v1 );
+   EMIT_VERT( j, vb, vertex_size, v3 );
+   EMIT_VERT( j, vb, vertex_size, v1 );
+   EMIT_VERT( j, vb, vertex_size, v2 );
+   EMIT_VERT( j, vb, vertex_size, v3 );
+}
+
+
+static __inline__ void mga_draw_point( mgaContextPtr mmesa,
+					mgaVertexPtr tmp )
+{
+   GLfloat sz = mmesa->glCtx->Point._Size * .5;
+   int vertex_size = mmesa->vertex_size;
+   GLuint *vb = mgaAllocDmaLow( mmesa, 6 * 4 * vertex_size );
+   int j;
+   
+#if 0
+   v0->v.x += PNT_X_OFFSET - TRI_X_OFFSET;
+   v0->v.y += PNT_Y_OFFSET - TRI_Y_OFFSET;
+#endif
+
+   /* Draw a point as two triangles.
+    */
+   *(float *)&vb[0] = tmp->v.x - sz;
+   *(float *)&vb[1] = tmp->v.y - sz;
+   for (j = 2 ; j < vertex_size ; j++) 
+      vb[j] = tmp->ui[j];
+   vb += vertex_size;
+
+   *(float *)&vb[0] = tmp->v.x + sz;
+   *(float *)&vb[1] = tmp->v.y - sz;
+   for (j = 2 ; j < vertex_size ; j++) 
+      vb[j] = tmp->ui[j];
+   vb += vertex_size;
+
+   *(float *)&vb[0] = tmp->v.x + sz;
+   *(float *)&vb[1] = tmp->v.y + sz;
+   for (j = 2 ; j < vertex_size ; j++) 
+      vb[j] = tmp->ui[j];
+   vb += vertex_size;
+
+   *(float *)&vb[0] = tmp->v.x + sz;
+   *(float *)&vb[1] = tmp->v.y + sz;
+   for (j = 2 ; j < vertex_size ; j++) 
+      vb[j] = tmp->ui[j];
+   vb += vertex_size;
+
+   *(float *)&vb[0] = tmp->v.x - sz;
+   *(float *)&vb[1] = tmp->v.y + sz;
+   for (j = 2 ; j < vertex_size ; j++) 
+      vb[j] = tmp->ui[j];
+   vb += vertex_size;
+
+   *(float *)&vb[0] = tmp->v.x - sz;
+   *(float *)&vb[1] = tmp->v.y - sz;
+   for (j = 2 ; j < vertex_size ; j++) 
+      vb[j] = tmp->ui[j];
+
+#if 0
+   v0->v.x -= PNT_X_OFFSET - TRI_X_OFFSET;
+   v0->v.y -= PNT_Y_OFFSET - TRI_Y_OFFSET;
+#endif
+}
+
+
+static __inline__ void mga_draw_line( mgaContextPtr mmesa,
+				      mgaVertexPtr v0,
+				      mgaVertexPtr v1 )
+{
+   GLuint vertex_size = mmesa->vertex_size;
+   GLuint *vb = mgaAllocDmaLow( mmesa, 6 * 4 * vertex_size );
+   GLfloat dx, dy, ix, iy;
+   GLfloat width = mmesa->glCtx->Line._Width;
+   GLint j;
+
+#if 0
+   v0->v.x += LINE_X_OFFSET - TRI_X_OFFSET;
+   v0->v.y += LINE_Y_OFFSET - TRI_Y_OFFSET;
+   v1->v.x += LINE_X_OFFSET - TRI_X_OFFSET;
+   v1->v.y += LINE_Y_OFFSET - TRI_Y_OFFSET;
+#endif
+
+   dx = v0->v.x - v1->v.x;
+   dy = v0->v.y - v1->v.y;
+   
+   ix = width * .5; iy = 0;
+   if (dx * dx > dy * dy) {
+      iy = ix; ix = 0;
+   }
+
+   *(float *)&vb[0] = v0->v.x - ix;
+   *(float *)&vb[1] = v0->v.y - iy;
+   for (j = 2 ; j < vertex_size ; j++) 
+      vb[j] = v0->ui[j];
+   vb += vertex_size;
+
+   *(float *)&vb[0] = v1->v.x + ix;
+   *(float *)&vb[1] = v1->v.y + iy;
+   for (j = 2 ; j < vertex_size ; j++) 
+      vb[j] = v1->ui[j];
+   vb += vertex_size;
+
+   *(float *)&vb[0] = v0->v.x + ix;
+   *(float *)&vb[1] = v0->v.y + iy;
+   for (j = 2 ; j < vertex_size ; j++) 
+      vb[j] = v0->ui[j];
+   vb += vertex_size;
+	 
+   *(float *)&vb[0] = v0->v.x - ix;
+   *(float *)&vb[1] = v0->v.y - iy;
+   for (j = 2 ; j < vertex_size ; j++) 
+      vb[j] = v0->ui[j];
+   vb += vertex_size;
+
+   *(float *)&vb[0] = v1->v.x - ix;
+   *(float *)&vb[1] = v1->v.y - iy;
+   for (j = 2 ; j < vertex_size ; j++) 
+      vb[j] = v1->ui[j];
+   vb += vertex_size;
+
+   *(float *)&vb[0] = v1->v.x + ix;
+   *(float *)&vb[1] = v1->v.y + iy;
+   for (j = 2 ; j < vertex_size ; j++) 
+      vb[j] = v1->ui[j];
+   vb += vertex_size;
+
+#if 0
+   v0->v.x -= LINE_X_OFFSET - TRI_X_OFFSET;
+   v0->v.y -= LINE_Y_OFFSET - TRI_Y_OFFSET;
+   v1->v.x -= LINE_X_OFFSET - TRI_X_OFFSET;
+   v1->v.y -= LINE_Y_OFFSET - TRI_Y_OFFSET;
+#endif
+}
+
+/***********************************************************************
+ *          Macros for t_dd_tritmp.h to draw basic primitives          *
+ ***********************************************************************/
+
+#define TRI( a, b, c )				\
+do {						\
+   if (DO_FALLBACK)				\
+      mmesa->draw_tri( mmesa, a, b, c );	\
+   else						\
+      mga_draw_triangle( mmesa, a, b, c );	\
+} while (0)
+
+#define QUAD( a, b, c, d )			\
+do {						\
+   if (DO_FALLBACK) {				\
+      mmesa->draw_tri( mmesa, a, b, d );	\
+      mmesa->draw_tri( mmesa, b, c, d );	\
+   } else {					\
+      mga_draw_quad( mmesa, a, b, c, d );	\
+   }						\
+} while (0)
+
+#define LINE( v0, v1 )				\
+do {						\
+   if (DO_FALLBACK)				\
+      mmesa->draw_line( mmesa, v0, v1 );	\
+   else {					\
+      mga_draw_line( mmesa, v0, v1 );		\
+   }						\
+} while (0)
+
+#define POINT( v0 )				\
+do {						\
+   if (DO_FALLBACK)				\
+      mmesa->draw_point( mmesa, v0 );		\
+   else {					\
+      mga_draw_point( mmesa, v0 );		\
+   }						\
+} while (0)
+
+
+/***********************************************************************
+ *              Fallback to swrast for basic primitives                *
+ ***********************************************************************/
+
+/* This code is hit only when a mix of accelerated and unaccelerated
+ * primitives are being drawn, and only for the unaccelerated
+ * primitives.  
+ */
+
+static void 
+mga_fallback_tri( mgaContextPtr mmesa, 
+		   mgaVertex *v0, 
+		   mgaVertex *v1, 
+		   mgaVertex *v2 )
+{
+   GLcontext *ctx = mmesa->glCtx;
+   SWvertex v[3];
+   mga_translate_vertex( ctx, v0, &v[0] );
+   mga_translate_vertex( ctx, v1, &v[1] );
+   mga_translate_vertex( ctx, v2, &v[2] );
+   _swrast_Triangle( ctx, &v[0], &v[1], &v[2] );
+}
+
+
+static void 
+mga_fallback_line( mgaContextPtr mmesa,
+		    mgaVertex *v0,
+		    mgaVertex *v1 )
+{
+   GLcontext *ctx = mmesa->glCtx;
+   SWvertex v[2];
+   mga_translate_vertex( ctx, v0, &v[0] );
+   mga_translate_vertex( ctx, v1, &v[1] );
+   _swrast_Line( ctx, &v[0], &v[1] );
+}
+
+
+static void 
+mga_fallback_point( mgaContextPtr mmesa, 
+		     mgaVertex *v0 )
+{
+   GLcontext *ctx = mmesa->glCtx;
+   SWvertex v[1];
+   mga_translate_vertex( ctx, v0, &v[0] );
+   _swrast_Point( ctx, &v[0] );
+}
+
+/***********************************************************************
+ *              Build render functions from dd templates               *
+ ***********************************************************************/
+
+
+#define MGA_UNFILLED_BIT    0x1
+#define MGA_OFFSET_BIT	    0x2
+#define MGA_TWOSIDE_BIT     0x4
+#define MGA_FLAT_BIT        0x8	/* mga can't flatshade? */
+#define MGA_FALLBACK_BIT    0x10
+#define MGA_MAX_TRIFUNC     0x20
+
+static struct {
+   points_func	        points;
+   line_func		line;
+   triangle_func	triangle;
+   quad_func		quad;
+} rast_tab[MGA_MAX_TRIFUNC];
+
+#define DO_FALLBACK (IND & MGA_FALLBACK_BIT)
+#define DO_OFFSET   (IND & MGA_OFFSET_BIT)
+#define DO_UNFILLED (IND & MGA_UNFILLED_BIT)
+#define DO_TWOSIDE  (IND & MGA_TWOSIDE_BIT)
+#define DO_FLAT     (IND & MGA_FLAT_BIT)
+#define DO_TRI       1
+#define DO_QUAD      1
+#define DO_LINE      1
+#define DO_POINTS    1
+#define DO_FULL_QUAD 1
+
+#define HAVE_RGBA         1
+#define HAVE_BACK_COLORS  0
+#define HAVE_SPEC         1
+#define HAVE_HW_FLATSHADE 0
+#define VERTEX mgaVertex
+#define TAB rast_tab
+
+#define MGA_COLOR( dst, src )			\
+do {						\
+   dst[0] = src[2];				\
+   dst[1] = src[1];				\
+   dst[2] = src[0];				\
+   dst[3] = src[3];				\
+} while (0)
+
+#define MGA_SPEC( dst, src )			\
+do {						\
+   dst[0] = src[2];				\
+   dst[1] = src[1];				\
+   dst[2] = src[0];				\
+} while (0)
+
+#define DEPTH_SCALE mmesa->depth_scale
+#define UNFILLED_TRI unfilled_tri
+#define UNFILLED_QUAD unfilled_quad
+#define VERT_X(_v) _v->v.x
+#define VERT_Y(_v) _v->v.y
+#define VERT_Z(_v) _v->v.z
+#define AREA_IS_CCW( a ) (a > 0)
+#define GET_VERTEX(e) (mmesa->verts + (e<<mmesa->vertex_stride_shift))
+
+#define VERT_SET_RGBA( v, c )  MGA_COLOR( v->ub4[4], c )
+#define VERT_COPY_RGBA( v0, v1 ) v0->ui[4] = v1->ui[4]
+#define VERT_SAVE_RGBA( idx )  color[idx] = v[idx]->ui[4]
+#define VERT_RESTORE_RGBA( idx ) v[idx]->ui[4] = color[idx]   
+
+#define VERT_SET_SPEC( v, c )  MGA_SPEC( v->ub4[5], c )
+#define VERT_COPY_SPEC( v0, v1 ) COPY_3V(v0->ub4[5], v1->ub4[5])
+#define VERT_SAVE_SPEC( idx )  spec[idx] = v[idx]->ui[5]
+#define VERT_RESTORE_SPEC( idx ) v[idx]->ui[5] = spec[idx]   
+
+#define LOCAL_VARS(n)					\
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);		\
+   GLuint color[n], spec[n];				\
+   (void) color; (void) spec;
+
+
+
+/***********************************************************************
+ *            Functions to draw basic unfilled primitives              *
+ ***********************************************************************/
+
+#define RASTERIZE(x) if (mmesa->raster_primitive != x) \
+                        mgaRasterPrimitive( ctx, x, MGA_WA_TRIANGLES )
+#define RENDER_PRIMITIVE mmesa->render_primitive
+#define IND MGA_FALLBACK_BIT
+#define TAG(x) x
+#include "tnl_dd/t_dd_unfilled.h"
+#undef IND
+
+/***********************************************************************
+ *                 Functions to draw GL primitives                     *
+ ***********************************************************************/
+
+#define IND (0)
+#define TAG(x) x
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_OFFSET_BIT)
+#define TAG(x) x##_offset
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_TWOSIDE_BIT)
+#define TAG(x) x##_twoside
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_TWOSIDE_BIT|MGA_OFFSET_BIT)
+#define TAG(x) x##_twoside_offset
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_UNFILLED_BIT)
+#define TAG(x) x##_unfilled
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_OFFSET_BIT|MGA_UNFILLED_BIT)
+#define TAG(x) x##_offset_unfilled
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_TWOSIDE_BIT|MGA_UNFILLED_BIT)
+#define TAG(x) x##_twoside_unfilled
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_TWOSIDE_BIT|MGA_OFFSET_BIT|MGA_UNFILLED_BIT)
+#define TAG(x) x##_twoside_offset_unfilled
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_FALLBACK_BIT)
+#define TAG(x) x##_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_OFFSET_BIT|MGA_FALLBACK_BIT)
+#define TAG(x) x##_offset_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_TWOSIDE_BIT|MGA_FALLBACK_BIT)
+#define TAG(x) x##_twoside_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_TWOSIDE_BIT|MGA_OFFSET_BIT|MGA_FALLBACK_BIT)
+#define TAG(x) x##_twoside_offset_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_UNFILLED_BIT|MGA_FALLBACK_BIT)
+#define TAG(x) x##_unfilled_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_OFFSET_BIT|MGA_UNFILLED_BIT|MGA_FALLBACK_BIT)
+#define TAG(x) x##_offset_unfilled_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_TWOSIDE_BIT|MGA_UNFILLED_BIT|MGA_FALLBACK_BIT)
+#define TAG(x) x##_twoside_unfilled_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_TWOSIDE_BIT|MGA_OFFSET_BIT|MGA_UNFILLED_BIT| \
+	     MGA_FALLBACK_BIT)
+#define TAG(x) x##_twoside_offset_unfilled_fallback
+#include "tnl_dd/t_dd_tritmp.h"
+
+
+/* Mga doesn't support provoking-vertex flat-shading?
+ */
+#define IND (MGA_FLAT_BIT)
+#define TAG(x) x##_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_OFFSET_BIT|MGA_FLAT_BIT)
+#define TAG(x) x##_offset_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_TWOSIDE_BIT|MGA_FLAT_BIT)
+#define TAG(x) x##_twoside_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_TWOSIDE_BIT|MGA_OFFSET_BIT|MGA_FLAT_BIT)
+#define TAG(x) x##_twoside_offset_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_UNFILLED_BIT|MGA_FLAT_BIT)
+#define TAG(x) x##_unfilled_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_OFFSET_BIT|MGA_UNFILLED_BIT|MGA_FLAT_BIT)
+#define TAG(x) x##_offset_unfilled_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_TWOSIDE_BIT|MGA_UNFILLED_BIT|MGA_FLAT_BIT)
+#define TAG(x) x##_twoside_unfilled_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_TWOSIDE_BIT|MGA_OFFSET_BIT|MGA_UNFILLED_BIT|MGA_FLAT_BIT)
+#define TAG(x) x##_twoside_offset_unfilled_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_FALLBACK_BIT|MGA_FLAT_BIT)
+#define TAG(x) x##_fallback_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_OFFSET_BIT|MGA_FALLBACK_BIT|MGA_FLAT_BIT)
+#define TAG(x) x##_offset_fallback_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_TWOSIDE_BIT|MGA_FALLBACK_BIT|MGA_FLAT_BIT)
+#define TAG(x) x##_twoside_fallback_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_TWOSIDE_BIT|MGA_OFFSET_BIT|MGA_FALLBACK_BIT|MGA_FLAT_BIT)
+#define TAG(x) x##_twoside_offset_fallback_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_UNFILLED_BIT|MGA_FALLBACK_BIT|MGA_FLAT_BIT)
+#define TAG(x) x##_unfilled_fallback_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_OFFSET_BIT|MGA_UNFILLED_BIT|MGA_FALLBACK_BIT|MGA_FLAT_BIT)
+#define TAG(x) x##_offset_unfilled_fallback_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_TWOSIDE_BIT|MGA_UNFILLED_BIT|MGA_FALLBACK_BIT|MGA_FLAT_BIT)
+#define TAG(x) x##_twoside_unfilled_fallback_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+#define IND (MGA_TWOSIDE_BIT|MGA_OFFSET_BIT|MGA_UNFILLED_BIT| \
+	     MGA_FALLBACK_BIT|MGA_FLAT_BIT)
+#define TAG(x) x##_twoside_offset_unfilled_fallback_flat
+#include "tnl_dd/t_dd_tritmp.h"
+
+
+static void init_rast_tab( void )
+{
+   init();
+   init_offset();
+   init_twoside();
+   init_twoside_offset();
+   init_unfilled();
+   init_offset_unfilled();
+   init_twoside_unfilled();
+   init_twoside_offset_unfilled();
+   init_fallback();
+   init_offset_fallback();
+   init_twoside_fallback();
+   init_twoside_offset_fallback();
+   init_unfilled_fallback();
+   init_offset_unfilled_fallback();
+   init_twoside_unfilled_fallback();
+   init_twoside_offset_unfilled_fallback();
+
+   init_flat();
+   init_offset_flat();
+   init_twoside_flat();
+   init_twoside_offset_flat();
+   init_unfilled_flat();
+   init_offset_unfilled_flat();
+   init_twoside_unfilled_flat();
+   init_twoside_offset_unfilled_flat();
+   init_fallback_flat();
+   init_offset_fallback_flat();
+   init_twoside_fallback_flat();
+   init_twoside_offset_fallback_flat();
+   init_unfilled_fallback_flat();
+   init_offset_unfilled_fallback_flat();
+   init_twoside_unfilled_fallback_flat();
+   init_twoside_offset_unfilled_fallback_flat();
+}
+
+/**********************************************************************/
+/*                 Render whole begin/end objects                     */
+/**********************************************************************/
+
+
+#define VERT(x) (mgaVertex *)(vertptr + ((x)<<vertshift))
+#define RENDER_POINTS( start, count )		\
+   for ( ; start < count ; start++)		\
+      mga_draw_point( mmesa, VERT(ELT(start)) );
+#define RENDER_LINE( v0, v1 ) \
+   mga_draw_line( mmesa, VERT(v0), VERT(v1) )
+#define RENDER_TRI( v0, v1, v2 )  \
+   mga_draw_triangle( mmesa, VERT(v0), VERT(v1), VERT(v2) )
+#define RENDER_QUAD( v0, v1, v2, v3 ) \
+   mga_draw_quad( mmesa, VERT(v0), VERT(v1), VERT(v2), VERT(v3) )
+#define INIT(x) mgaRenderPrimitive( ctx, x )
+#undef LOCAL_VARS
+#define LOCAL_VARS						\
+    mgaContextPtr mmesa = MGA_CONTEXT(ctx);			\
+    GLubyte *vertptr = (GLubyte *)mmesa->verts;			\
+    const GLuint vertshift = mmesa->vertex_stride_shift;       	\
+    const GLuint * const elt = TNL_CONTEXT(ctx)->vb.Elts;	\
+    (void) elt;
+#define RESET_STIPPLE 
+#define RESET_OCCLUSION 
+#define PRESERVE_VB_DEFS
+#define ELT(x) x
+#define TAG(x) mga_##x##_verts
+#include "tnl/t_vb_rendertmp.h"
+#undef ELT
+#undef TAG
+#define TAG(x) mga_##x##_elts
+#define ELT(x) elt[x]
+#include "tnl/t_vb_rendertmp.h"
+
+
+/**********************************************************************/
+/*                   Render clipped primitives                        */
+/**********************************************************************/
+
+
+
+static void mgaRenderClippedPoly( GLcontext *ctx, const GLuint *elts, GLuint n )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   struct vertex_buffer *VB = &tnl->vb;
+   GLuint prim = mmesa->render_primitive;
+
+   /* Render the new vertices as an unclipped polygon. 
+    */
+   {
+      GLuint *tmp = VB->Elts;
+      VB->Elts = (GLuint *)elts;
+      tnl->Driver.Render.PrimTabElts[GL_POLYGON]( ctx, 0, n, PRIM_BEGIN|PRIM_END );
+      VB->Elts = tmp;
+   }
+
+   /* Restore the render primitive
+    */
+   if (prim != GL_POLYGON)
+      tnl->Driver.Render.PrimitiveNotify( ctx, prim );
+}
+
+static void mgaRenderClippedLine( GLcontext *ctx, GLuint ii, GLuint jj )
+{
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   tnl->Driver.Render.Line( ctx, ii, jj );
+}
+
+static void mgaFastRenderClippedPoly( GLcontext *ctx, const GLuint *elts, 
+				       GLuint n )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT( ctx );
+   GLuint vertex_size = mmesa->vertex_size;
+   GLuint *vb = mgaAllocDmaLow( mmesa, (n-2) * 3 * 4 * vertex_size );
+   GLubyte *vertptr = (GLubyte *)mmesa->verts;			
+   const GLuint vertshift = mmesa->vertex_stride_shift;       	
+   const GLuint *start = (const GLuint *)VERT(elts[0]);
+   int i,j;
+
+   for (i = 2 ; i < n ; i++) {
+      EMIT_VERT( j, vb, vertex_size, (mgaVertexPtr) VERT(elts[i-1]) );
+      EMIT_VERT( j, vb, vertex_size, (mgaVertexPtr) VERT(elts[i]) );
+      EMIT_VERT( j, vb, vertex_size, (mgaVertexPtr) start );
+   }
+}
+
+/**********************************************************************/
+/*                    Choose render functions                         */
+/**********************************************************************/
+
+
+
+#define _MGA_NEW_RENDERSTATE (_DD_NEW_LINE_STIPPLE |		\
+			       _DD_NEW_TRI_UNFILLED |		\
+			       _DD_NEW_TRI_LIGHT_TWOSIDE |	\
+			       _DD_NEW_TRI_OFFSET |		\
+			       _DD_NEW_TRI_STIPPLE |		\
+			       _NEW_POLYGONSTIPPLE)
+
+
+#define POINT_FALLBACK (DD_POINT_SMOOTH)
+#define LINE_FALLBACK (DD_LINE_SMOOTH | DD_LINE_STIPPLE)
+#define TRI_FALLBACK (DD_TRI_SMOOTH | DD_TRI_UNFILLED)
+#define ANY_FALLBACK_FLAGS (POINT_FALLBACK|LINE_FALLBACK|TRI_FALLBACK| \
+                            DD_TRI_STIPPLE)
+#define ANY_RASTER_FLAGS (DD_FLATSHADE|DD_TRI_LIGHT_TWOSIDE|DD_TRI_OFFSET| \
+                          DD_TRI_UNFILLED)
+
+static void mgaChooseRenderState(GLcontext *ctx)
+{
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+   GLuint flags = ctx->_TriangleCaps;
+   GLuint index = 0;
+
+   if (flags & (ANY_FALLBACK_FLAGS|ANY_RASTER_FLAGS)) {
+      if (flags & ANY_RASTER_FLAGS) {
+	 if (flags & DD_TRI_LIGHT_TWOSIDE)    index |= MGA_TWOSIDE_BIT;
+	 if (flags & DD_TRI_OFFSET)	      index |= MGA_OFFSET_BIT;
+	 if (flags & DD_TRI_UNFILLED)	      index |= MGA_UNFILLED_BIT;
+	 if (flags & DD_FLATSHADE)	      index |= MGA_FLAT_BIT;
+      }
+
+      mmesa->draw_point = mga_draw_point;
+      mmesa->draw_line = mga_draw_line;
+      mmesa->draw_tri = mga_draw_triangle;
+
+      /* Hook in fallbacks for specific primitives.
+       */
+      if (flags & ANY_FALLBACK_FLAGS)
+      {
+	 if (flags & POINT_FALLBACK) 
+	    mmesa->draw_point = mga_fallback_point;
+	 
+	 if (flags & LINE_FALLBACK) 
+	    mmesa->draw_line = mga_fallback_line;
+	 
+	 if (flags & TRI_FALLBACK) 
+	    mmesa->draw_tri = mga_fallback_tri;
+	 
+	 if ((flags & DD_TRI_STIPPLE) && !mmesa->haveHwStipple)
+	    mmesa->draw_tri = mga_fallback_tri;
+      
+	 index |= MGA_FALLBACK_BIT;
+      }
+   }
+
+   if (mmesa->RenderIndex != index) {
+      mmesa->RenderIndex = index;
+
+      tnl->Driver.Render.Points = rast_tab[index].points;
+      tnl->Driver.Render.Line = rast_tab[index].line;
+      tnl->Driver.Render.Triangle = rast_tab[index].triangle;
+      tnl->Driver.Render.Quad = rast_tab[index].quad;
+         
+      if (index == 0) {
+	 tnl->Driver.Render.PrimTabVerts = mga_render_tab_verts;
+	 tnl->Driver.Render.PrimTabElts = mga_render_tab_elts;
+	 tnl->Driver.Render.ClippedLine = line; /* from tritmp.h */
+	 tnl->Driver.Render.ClippedPolygon = mgaFastRenderClippedPoly;
+      } else {
+	 tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
+	 tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
+	 tnl->Driver.Render.ClippedLine = mgaRenderClippedLine;
+	 tnl->Driver.Render.ClippedPolygon = mgaRenderClippedPoly;
+      }
+   }
+}
+
+/**********************************************************************/
+/*                Runtime render state and callbacks                  */
+/**********************************************************************/
+
+
+static void mgaRunPipeline( GLcontext *ctx )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+
+   if (mmesa->new_state) {
+      mgaDDUpdateHwState( ctx );
+   }
+
+   if (!mmesa->Fallback && mmesa->new_gl_state) {
+      if (mmesa->new_gl_state & _MGA_NEW_RASTERSETUP)
+	 mgaChooseVertexState( ctx );
+      
+      if (mmesa->new_gl_state & _MGA_NEW_RENDERSTATE)
+	 mgaChooseRenderState( ctx );
+      
+      mmesa->new_gl_state = 0;
+
+      /* Circularity: mgaDDUpdateHwState can affect mmesa->Fallback,
+       * but mgaChooseVertexState can affect mmesa->new_state.  Hence
+       * the second check.  (Fix this...)
+       */
+      if (mmesa->new_state) {
+	 mgaDDUpdateHwState( ctx );
+      }
+   }
+
+   _tnl_run_pipeline( ctx );
+}
+
+
+static GLenum reduced_prim[GL_POLYGON+1] = {
+   GL_POINTS,
+   GL_LINES,
+   GL_LINES,
+   GL_LINES,
+   GL_TRIANGLES,
+   GL_TRIANGLES,
+   GL_TRIANGLES,
+   GL_TRIANGLES,
+   GL_TRIANGLES,
+   GL_TRIANGLES
+};
+
+
+
+/* Always called between RenderStart and RenderFinish --> We already
+ * hold the lock.
+ */
+void mgaRasterPrimitive( GLcontext *ctx, GLenum prim, GLuint hwprim )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT( ctx );
+
+   FLUSH_BATCH( mmesa );
+   mmesa->raster_primitive = prim;
+/*     mmesa->hw_primitive = hwprim; */
+   mmesa->hw_primitive = MGA_WA_TRIANGLES; /* disable mgarender.c for now */
+   mgaUpdateCull(ctx);   
+
+   if (ctx->Polygon.StippleFlag && mmesa->haveHwStipple)
+   {
+      mmesa->dirty |= MGA_UPLOAD_CONTEXT;
+      if (mmesa->raster_primitive == GL_TRIANGLES)
+	 mmesa->setup.dwgctl |= mmesa->poly_stipple;
+      else
+	 mmesa->setup.dwgctl &= ~(0xf<<20);
+   }
+}
+
+
+
+/* Determine the rasterized primitive when not drawing unfilled 
+ * polygons.
+ *
+ * Used only for the default render stage which always decomposes
+ * primitives to trianges/lines/points.  For the accelerated stage,
+ * which renders strips as strips, the equivalent calculations are
+ * performed in mgarender.c.
+ */
+static void mgaRenderPrimitive( GLcontext *ctx, GLenum prim )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+   GLuint rprim = reduced_prim[prim];
+
+   mmesa->render_primitive = prim;
+
+   if (rprim == GL_TRIANGLES && (ctx->_TriangleCaps & DD_TRI_UNFILLED))
+      return;
+       
+   if (mmesa->raster_primitive != rprim) {
+      mgaRasterPrimitive( ctx, rprim, MGA_WA_TRIANGLES );
+   }
+}
+
+static void mgaRenderFinish( GLcontext *ctx )
+{
+   if (MGA_CONTEXT(ctx)->RenderIndex & MGA_FALLBACK_BIT)
+      _swrast_flush( ctx );
+}
+
+
+
+/**********************************************************************/
+/*               Manage total rasterization fallbacks                 */
+/**********************************************************************/
+
+void mgaFallback( GLcontext *ctx, GLuint bit, GLboolean mode )
+{
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+   GLuint oldfallback = mmesa->Fallback;
+
+   if (mode) {
+      mmesa->Fallback |= bit;
+      if (oldfallback == 0) {
+	 FLUSH_BATCH(mmesa);
+	 _swsetup_Wakeup( ctx );
+	 mmesa->RenderIndex = ~0;
+      }
+   }
+   else {
+      mmesa->Fallback &= ~bit;
+      if (oldfallback == bit) {
+	 _swrast_flush( ctx );
+	 tnl->Driver.Render.Start = mgaCheckTexSizes;
+	 tnl->Driver.Render.PrimitiveNotify = mgaRenderPrimitive;
+	 tnl->Driver.Render.Finish = mgaRenderFinish;
+	 tnl->Driver.Render.BuildVertices = mgaBuildVertices;
+	 mmesa->new_gl_state |= (_MGA_NEW_RENDERSTATE |
+				 _MGA_NEW_RASTERSETUP);
+      }
+   }
+}
+
+
+void mgaDDInitTriFuncs( GLcontext *ctx )
+{
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+   static int firsttime = 1;
+   if (firsttime) {
+      init_rast_tab();
+      firsttime = 0;
+   }
+
+   mmesa->RenderIndex = ~0;
+	
+   tnl->Driver.RunPipeline               = mgaRunPipeline;
+   tnl->Driver.Render.Start              = mgaCheckTexSizes;
+   tnl->Driver.Render.Finish             = mgaRenderFinish; 
+   tnl->Driver.Render.PrimitiveNotify    = mgaRenderPrimitive;
+   tnl->Driver.Render.ResetLineStipple   = _swrast_ResetLineStipple;
+   tnl->Driver.Render.BuildVertices      = mgaBuildVertices;
+   tnl->Driver.Render.Multipass		 = NULL;
+}

src/mesa/drivers/dri/mga/mgatris.h

@@ -0,0 +1,43 @@
+/*
+ * Copyright 2000-2001 VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgatris.h,v 1.10 2002/10/30 12:51:36 alanh Exp $ */
+
+#ifndef MGATRIS_INC
+#define MGATRIS_INC
+
+#include "mtypes.h"
+
+extern void mgaDDInitTriFuncs( GLcontext *ctx );
+
+extern void mgaRasterPrimitive( GLcontext *ctx, GLenum prim, GLuint hwprim );
+
+extern void mgaFallback( GLcontext *ctx, GLuint bit, GLboolean mode );
+#define FALLBACK( ctx, bit, mode ) mgaFallback( ctx, bit, mode )
+
+
+
+#endif

src/mesa/drivers/dri/mga/mgavb.c

@@ -0,0 +1,497 @@
+/*
+ * Copyright 2000-2001 VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgavb.c,v 1.15 2003/03/26 20:43:49 tsi Exp $ */
+
+#include "mgacontext.h"
+#include "mgavb.h"
+#include "mgatris.h"
+#include "mgaioctl.h"
+#include "mga_xmesa.h"
+
+#include "glheader.h"
+#include "mtypes.h"
+/*#include "mem.h" */
+#include "macros.h"
+#include "colormac.h"
+/*#include "mmath.h"*/
+
+#include "tnl/t_context.h"
+#include "swrast_setup/swrast_setup.h"
+#include "swrast/swrast.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+
+#define MGA_TEX1_BIT       0x1
+#define MGA_TEX0_BIT       0x2	
+#define MGA_RGBA_BIT       0x4
+#define MGA_SPEC_BIT       0x8
+#define MGA_FOG_BIT	   0x10
+#define MGA_XYZW_BIT       0x20
+#define MGA_PTEX_BIT       0x40
+#define MGA_MAX_SETUP      0x80
+
+static struct {
+   void                (*emit)( GLcontext *, GLuint, GLuint, void *, GLuint );
+   interp_func		interp;
+   copy_pv_func	        copy_pv;
+   GLboolean           (*check_tex_sizes)( GLcontext *ctx );
+   GLuint               vertex_size;
+   GLuint               vertex_stride_shift;
+   GLuint               vertex_format;
+} setup_tab[MGA_MAX_SETUP];
+
+
+#define TINY_VERTEX_FORMAT      0
+#define NOTEX_VERTEX_FORMAT     0
+#define TEX0_VERTEX_FORMAT      (MGA_A|MGA_S|MGA_F)
+#define TEX1_VERTEX_FORMAT      (MGA_A|MGA_S|MGA_F|MGA_T2)
+#define PROJ_TEX1_VERTEX_FORMAT 0
+#define TEX2_VERTEX_FORMAT      0
+#define TEX3_VERTEX_FORMAT      0
+#define PROJ_TEX3_VERTEX_FORMAT 0
+
+#define DO_XYZW (IND & MGA_XYZW_BIT)
+#define DO_RGBA (IND & MGA_RGBA_BIT)
+#define DO_SPEC (IND & MGA_SPEC_BIT)
+#define DO_FOG  (IND & MGA_FOG_BIT)
+#define DO_TEX0 (IND & MGA_TEX0_BIT)
+#define DO_TEX1 (IND & MGA_TEX1_BIT)
+#define DO_TEX2 0
+#define DO_TEX3 0
+#define DO_PTEX (IND & MGA_PTEX_BIT)
+
+			       
+#define VERTEX mgaVertex
+#define VERTEX_COLOR mga_color_t
+#define LOCALVARS mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+#define GET_VIEWPORT_MAT() mmesa->hw_viewport
+#define GET_TEXSOURCE(n)  mmesa->tmu_source[n]
+#define GET_VERTEX_FORMAT() mmesa->vertex_format
+#define GET_VERTEX_STORE() ((GLubyte *)mmesa->verts)
+#define GET_VERTEX_STRIDE_SHIFT() mmesa->vertex_stride_shift
+#define GET_UBYTE_COLOR_STORE() &mmesa->UbyteColor
+#define GET_UBYTE_SPEC_COLOR_STORE() &mmesa->UbyteSecondaryColor
+
+#define HAVE_HW_VIEWPORT    0
+#define HAVE_HW_DIVIDE      0
+#define HAVE_RGBA_COLOR     0
+#define HAVE_TINY_VERTICES  0
+#define HAVE_NOTEX_VERTICES 0
+#define HAVE_TEX0_VERTICES  1
+#define HAVE_TEX1_VERTICES  1
+#define HAVE_TEX2_VERTICES  0
+#define HAVE_TEX3_VERTICES  0
+#define HAVE_PTEX_VERTICES  0
+
+#define UNVIEWPORT_VARS					\
+   const GLfloat dx = - mmesa->drawX - SUBPIXEL_X;	\
+   const GLfloat dy = (mmesa->driDrawable->h + 		\
+		       mmesa->drawY + SUBPIXEL_Y);	\
+   const GLfloat sz = 1.0 / mmesa->depth_scale
+
+#define UNVIEWPORT_X(x)    x      + dx;
+#define UNVIEWPORT_Y(y)  - y      + dy;
+#define UNVIEWPORT_Z(z)    z * sz;
+
+#define PTEX_FALLBACK() FALLBACK(ctx, MGA_FALLBACK_TEXTURE, 1)
+
+
+#define IMPORT_FLOAT_COLORS mga_import_float_colors
+#define IMPORT_FLOAT_SPEC_COLORS mga_import_float_spec_colors
+
+#define INTERP_VERTEX setup_tab[MGA_CONTEXT(ctx)->SetupIndex].interp
+#define COPY_PV_VERTEX setup_tab[MGA_CONTEXT(ctx)->SetupIndex].copy_pv
+
+
+/***********************************************************************
+ *         Generate  pv-copying and translation functions              *
+ ***********************************************************************/
+
+#define TAG(x) mga_##x
+#include "tnl_dd/t_dd_vb.c"
+
+/***********************************************************************
+ *             Generate vertex emit and interp functions               *
+ ***********************************************************************/
+
+
+#define IND (MGA_XYZW_BIT|MGA_RGBA_BIT)
+#define TAG(x) x##_wg
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_XYZW_BIT|MGA_RGBA_BIT|MGA_SPEC_BIT)
+#define TAG(x) x##_wgs
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_XYZW_BIT|MGA_RGBA_BIT|MGA_TEX0_BIT)
+#define TAG(x) x##_wgt0
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_XYZW_BIT|MGA_RGBA_BIT|MGA_TEX0_BIT|MGA_TEX1_BIT)
+#define TAG(x) x##_wgt0t1
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_XYZW_BIT|MGA_RGBA_BIT|MGA_TEX0_BIT|MGA_PTEX_BIT)
+#define TAG(x) x##_wgpt0
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_XYZW_BIT|MGA_RGBA_BIT|MGA_SPEC_BIT|MGA_TEX0_BIT)
+#define TAG(x) x##_wgst0
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_XYZW_BIT|MGA_RGBA_BIT|MGA_SPEC_BIT|MGA_TEX0_BIT|MGA_TEX1_BIT)
+#define TAG(x) x##_wgst0t1
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_XYZW_BIT|MGA_RGBA_BIT|MGA_SPEC_BIT|MGA_TEX0_BIT|MGA_PTEX_BIT)
+#define TAG(x) x##_wgspt0
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_XYZW_BIT|MGA_RGBA_BIT|MGA_FOG_BIT)
+#define TAG(x) x##_wgf
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_XYZW_BIT|MGA_RGBA_BIT|MGA_FOG_BIT|MGA_SPEC_BIT)
+#define TAG(x) x##_wgfs
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_XYZW_BIT|MGA_RGBA_BIT|MGA_FOG_BIT|MGA_TEX0_BIT)
+#define TAG(x) x##_wgft0
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_XYZW_BIT|MGA_RGBA_BIT|MGA_FOG_BIT|MGA_TEX0_BIT|MGA_TEX1_BIT)
+#define TAG(x) x##_wgft0t1
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_XYZW_BIT|MGA_RGBA_BIT|MGA_FOG_BIT|MGA_TEX0_BIT|MGA_PTEX_BIT)
+#define TAG(x) x##_wgfpt0
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_XYZW_BIT|MGA_RGBA_BIT|MGA_FOG_BIT|MGA_SPEC_BIT|MGA_TEX0_BIT)
+#define TAG(x) x##_wgfst0
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_XYZW_BIT|MGA_RGBA_BIT|MGA_FOG_BIT|MGA_SPEC_BIT|MGA_TEX0_BIT|MGA_TEX1_BIT)
+#define TAG(x) x##_wgfst0t1
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_XYZW_BIT|MGA_RGBA_BIT|MGA_FOG_BIT|MGA_SPEC_BIT|MGA_TEX0_BIT|MGA_PTEX_BIT)
+#define TAG(x) x##_wgfspt0
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_TEX0_BIT)
+#define TAG(x) x##_t0
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_TEX0_BIT|MGA_TEX1_BIT)
+#define TAG(x) x##_t0t1
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_FOG_BIT)
+#define TAG(x) x##_f
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_FOG_BIT|MGA_TEX0_BIT)
+#define TAG(x) x##_ft0
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_FOG_BIT|MGA_TEX0_BIT|MGA_TEX1_BIT)
+#define TAG(x) x##_ft0t1
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_RGBA_BIT)
+#define TAG(x) x##_g
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_RGBA_BIT|MGA_SPEC_BIT)
+#define TAG(x) x##_gs
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_RGBA_BIT|MGA_TEX0_BIT)
+#define TAG(x) x##_gt0
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_RGBA_BIT|MGA_TEX0_BIT|MGA_TEX1_BIT)
+#define TAG(x) x##_gt0t1
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_RGBA_BIT|MGA_SPEC_BIT|MGA_TEX0_BIT)
+#define TAG(x) x##_gst0
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_RGBA_BIT|MGA_SPEC_BIT|MGA_TEX0_BIT|MGA_TEX1_BIT)
+#define TAG(x) x##_gst0t1
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_RGBA_BIT|MGA_FOG_BIT)
+#define TAG(x) x##_gf
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_RGBA_BIT|MGA_FOG_BIT|MGA_SPEC_BIT)
+#define TAG(x) x##_gfs
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_RGBA_BIT|MGA_FOG_BIT|MGA_TEX0_BIT)
+#define TAG(x) x##_gft0
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_RGBA_BIT|MGA_FOG_BIT|MGA_TEX0_BIT|MGA_TEX1_BIT)
+#define TAG(x) x##_gft0t1
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_RGBA_BIT|MGA_FOG_BIT|MGA_SPEC_BIT|MGA_TEX0_BIT)
+#define TAG(x) x##_gfst0
+#include "tnl_dd/t_dd_vbtmp.h"
+
+#define IND (MGA_RGBA_BIT|MGA_FOG_BIT|MGA_SPEC_BIT|MGA_TEX0_BIT|MGA_TEX1_BIT)
+#define TAG(x) x##_gfst0t1
+#include "tnl_dd/t_dd_vbtmp.h"
+
+
+static void init_setup_tab( void )
+{
+   init_wg();
+   init_wgs();
+   init_wgt0();
+   init_wgt0t1();
+   init_wgpt0();
+   init_wgst0();
+   init_wgst0t1();
+   init_wgspt0();
+   init_wgf();
+   init_wgfs();
+   init_wgft0();
+   init_wgft0t1();
+   init_wgfpt0();
+   init_wgfst0();
+   init_wgfst0t1();
+   init_wgfspt0();
+   init_t0();
+   init_t0t1();
+   init_f();
+   init_ft0();
+   init_ft0t1();
+   init_g();
+   init_gs();
+   init_gt0();
+   init_gt0t1();
+   init_gst0();
+   init_gst0t1();
+   init_gf();
+   init_gfs();
+   init_gft0();
+   init_gft0t1();
+   init_gfst0();
+   init_gfst0t1();
+}
+
+
+
+
+void mgaPrintSetupFlags(char *msg, GLuint flags )
+{
+   fprintf(stderr, "%s: %d %s%s%s%s%s%s\n",
+	   msg,
+	   (int)flags,
+	   (flags & MGA_XYZW_BIT)      ? " xyzw," : "", 
+	   (flags & MGA_RGBA_BIT)     ? " rgba," : "",
+	   (flags & MGA_SPEC_BIT)     ? " spec," : "",
+	   (flags & MGA_FOG_BIT)      ? " fog," : "",
+	   (flags & MGA_TEX0_BIT)     ? " tex-0," : "",
+	   (flags & MGA_TEX1_BIT)     ? " tex-1," : "");
+}
+
+
+void mgaCheckTexSizes( GLcontext *ctx )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT( ctx );
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+
+   /*fprintf(stderr, "%s\n", __FUNCTION__);*/
+
+   if (!setup_tab[mmesa->SetupIndex].check_tex_sizes(ctx)) {
+      mmesa->SetupIndex |= MGA_PTEX_BIT;
+      mmesa->SetupNewInputs = ~0;
+
+      if (!mmesa->Fallback &&
+	  !(ctx->_TriangleCaps & (DD_TRI_LIGHT_TWOSIDE|DD_TRI_UNFILLED))) {
+	 tnl->Driver.Render.Interp = setup_tab[mmesa->SetupIndex].interp;
+	 tnl->Driver.Render.CopyPV = setup_tab[mmesa->SetupIndex].copy_pv;
+      }
+   }
+}
+
+
+void mgaBuildVertices( GLcontext *ctx, 
+		       GLuint start, 
+		       GLuint count,
+		       GLuint newinputs )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT( ctx );
+   GLubyte *v = ((GLubyte *)mmesa->verts + (start<<mmesa->vertex_stride_shift));
+   GLuint stride = 1<<mmesa->vertex_stride_shift;
+
+   newinputs |= mmesa->SetupNewInputs;
+   mmesa->SetupNewInputs = 0;
+
+   if (!newinputs)
+      return;
+
+   if (newinputs & VERT_BIT_CLIP) {
+      setup_tab[mmesa->SetupIndex].emit( ctx, start, count, v, stride );   
+   } else {
+      GLuint ind = 0;
+
+      if (newinputs & VERT_BIT_COLOR0)
+	 ind |= MGA_RGBA_BIT;
+      
+      if (newinputs & VERT_BIT_COLOR1)
+	 ind |= MGA_SPEC_BIT;
+
+      if (newinputs & VERT_BIT_TEX0) 
+	 ind |= MGA_TEX0_BIT;
+
+      if (newinputs & VERT_BIT_TEX1)
+	 ind |= MGA_TEX0_BIT|MGA_TEX1_BIT;
+
+      if (newinputs & VERT_BIT_FOG)
+	 ind |= MGA_FOG_BIT;
+
+      if (mmesa->SetupIndex & MGA_PTEX_BIT)
+	 ind = ~0;
+
+      ind &= mmesa->SetupIndex;
+
+      if (ind) {
+	 setup_tab[ind].emit( ctx, start, count, v, stride );   
+      }
+   }
+}
+
+
+void mgaChooseVertexState( GLcontext *ctx )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT( ctx );
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   GLuint ind = MGA_XYZW_BIT|MGA_RGBA_BIT;
+
+   if (ctx->_TriangleCaps & DD_SEPARATE_SPECULAR) 
+      ind |= MGA_SPEC_BIT;
+
+   if (ctx->Fog.Enabled) 
+      ind |= MGA_FOG_BIT;
+   
+   if (ctx->Texture.Unit[1]._ReallyEnabled & (TEXTURE_1D_BIT|TEXTURE_2D_BIT)) {
+      if (ctx->Texture.Unit[0]._ReallyEnabled & (TEXTURE_1D_BIT|TEXTURE_2D_BIT)) {
+	 ind |= MGA_TEX1_BIT|MGA_TEX0_BIT;
+      }
+      else {
+	 ind |= MGA_TEX0_BIT;
+      }
+   }
+   else if (ctx->Texture.Unit[0]._ReallyEnabled & (TEXTURE_1D_BIT|TEXTURE_2D_BIT)) {
+      ind |= MGA_TEX0_BIT;
+   }
+   
+   mmesa->SetupIndex = ind;
+
+   if (ctx->_TriangleCaps & (DD_TRI_LIGHT_TWOSIDE|DD_TRI_UNFILLED)) {
+      tnl->Driver.Render.Interp = mga_interp_extras;
+      tnl->Driver.Render.CopyPV = mga_copy_pv_extras;
+   } else {
+      tnl->Driver.Render.Interp = setup_tab[ind].interp;
+      tnl->Driver.Render.CopyPV = setup_tab[ind].copy_pv;
+   }
+
+   if (setup_tab[ind].vertex_format != mmesa->vertex_format) {
+      FLUSH_BATCH(mmesa);      
+      mmesa->new_state |= MGA_NEW_WARP;
+      mmesa->dirty |= MGA_UPLOAD_PIPE;
+      mmesa->vertex_format = setup_tab[ind].vertex_format;
+      mmesa->vertex_size = setup_tab[ind].vertex_size;
+      mmesa->vertex_stride_shift = setup_tab[ind].vertex_stride_shift;
+   }
+}
+
+
+
+void mga_emit_contiguous_verts( GLcontext *ctx,
+				 GLuint start,
+				 GLuint count )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+   GLuint vertex_size = mmesa->vertex_size * 4;
+   GLuint *dest = mgaAllocDmaLow( mmesa, (count-start) * vertex_size);
+   setup_tab[mmesa->SetupIndex].emit( ctx, start, count, dest, vertex_size );
+}
+				   
+
+
+void mgaInitVB( GLcontext *ctx )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+   GLuint size = TNL_CONTEXT(ctx)->vb.Size;
+
+   mmesa->verts = (char *)ALIGN_MALLOC(size * sizeof(mgaVertex), 32);
+
+   {
+      static int firsttime = 1;
+      if (firsttime) {
+	 init_setup_tab();
+	 firsttime = 0;
+      }
+   }
+
+   mmesa->new_state |= MGA_NEW_WARP;
+   mmesa->dirty |= MGA_UPLOAD_PIPE;
+   mmesa->vertex_format = setup_tab[0].vertex_format;
+   mmesa->vertex_size = setup_tab[0].vertex_size;
+   mmesa->vertex_stride_shift = setup_tab[0].vertex_stride_shift;
+}
+
+
+void mgaFreeVB( GLcontext *ctx )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+   if (mmesa->verts) {
+      ALIGN_FREE(mmesa->verts);
+      mmesa->verts = 0;
+   }
+
+   if (mmesa->UbyteSecondaryColor.Ptr) {
+      ALIGN_FREE(mmesa->UbyteSecondaryColor.Ptr);
+      mmesa->UbyteSecondaryColor.Ptr = 0;
+   }
+
+   if (mmesa->UbyteColor.Ptr) {
+      ALIGN_FREE(mmesa->UbyteColor.Ptr);
+      mmesa->UbyteColor.Ptr = 0;
+   }
+}
+

src/mesa/drivers/dri/mga/mgavb.h

@@ -0,0 +1,65 @@
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgavb.h,v 1.8 2002/10/30 12:51:36 alanh Exp $ */
+/*
+ * Copyright 2000-2001 VA Linux Systems, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#ifndef MGAVB_INC
+#define MGAVB_INC
+
+#include "mtypes.h"
+#include "mgacontext.h"
+#include "swrast/swrast.h"
+
+#define _MGA_NEW_RASTERSETUP (_NEW_TEXTURE |			\
+			      _DD_NEW_SEPARATE_SPECULAR |	\
+			      _DD_NEW_TRI_UNFILLED |		\
+			      _DD_NEW_TRI_LIGHT_TWOSIDE |	\
+			      _NEW_FOG)
+
+
+extern void mgaChooseVertexState( GLcontext *ctx );
+extern void mgaCheckTexSizes( GLcontext *ctx );
+extern void mgaBuildVertices( GLcontext *ctx, 
+			      GLuint start, 
+			      GLuint count,
+			      GLuint newinputs );
+
+extern void mgaPrintSetupFlags(char *msg, GLuint flags );
+
+extern void mgaInitVB( GLcontext *ctx );
+extern void mgaFreeVB( GLcontext *ctx );
+
+extern void mga_emit_contiguous_verts( GLcontext *ctx,
+					GLuint start,
+					GLuint count );
+
+extern void mga_translate_vertex(GLcontext *ctx, 
+				 const mgaVertex *src, 
+				 SWvertex *dst);
+
+extern void mga_print_vertex( GLcontext *ctx, const mgaVertex *v );
+
+#endif

src/mesa/drivers/dri/mga/server/mga.h

@@ -0,0 +1,115 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/mga/mga.h,v 1.85 2002/12/16 16:19:17 dawes Exp $ */
+/*
+ * MGA Millennium (MGA2064W) functions
+ *
+ * Copyright 1996 The XFree86 Project, Inc.
+ *
+ * Authors
+ *		Dirk Hohndel
+ *			hohndel@XFree86.Org
+ *		David Dawes
+ *			dawes@XFree86.Org
+ */
+
+#ifndef MGA_H
+#define MGA_H
+
+
+#include "xf86drm.h"
+#include "linux/types.h"
+
+
+#define PCI_CHIP_MGA2085		0x0518
+#define PCI_CHIP_MGA2064		0x0519
+#define PCI_CHIP_MGA1064		0x051A
+#define PCI_CHIP_MGA2164		0x051B
+#define PCI_CHIP_MGA2164_AGP		0x051F
+#define PCI_CHIP_MGAG200_PCI		0x0520
+#define PCI_CHIP_MGAG200		0x0521
+#define PCI_CHIP_MGAG400		0x0525
+#define PCI_CHIP_MGAG550		0x2527
+#define PCI_CHIP_MGAG100_PCI		0x1000
+#define PCI_CHIP_MGAG100		0x1001
+
+
+#  define MMIO_IN8(base, offset) \
+	*(volatile unsigned char *)(((unsigned char*)(base)) + (offset))
+#  define MMIO_IN16(base, offset) \
+	*(volatile unsigned short *)(void *)(((unsigned char*)(base)) + (offset))
+#  define MMIO_IN32(base, offset) \
+	*(volatile unsigned int *)(void *)(((unsigned char*)(base)) + (offset))
+#  define MMIO_OUT8(base, offset, val) \
+	*(volatile unsigned char *)(((unsigned char*)(base)) + (offset)) = (val)
+#  define MMIO_OUT16(base, offset, val) \
+	*(volatile unsigned short *)(void *)(((unsigned char*)(base)) + (offset)) = (val)
+#  define MMIO_OUT32(base, offset, val) \
+	*(volatile unsigned int *)(void *)(((unsigned char*)(base)) + (offset)) = (val)
+
+#define INREG8(addr) MMIO_IN8(pMga->IOBase, addr)
+#define INREG16(addr) MMIO_IN16(pMga->IOBase, addr)
+#define INREG(addr) MMIO_IN32(pMga->IOBase, addr)
+#define OUTREG8(addr, val) MMIO_OUT8(pMga->IOBase, addr, val)
+#define OUTREG16(addr, val) MMIO_OUT16(pMga->IOBase, addr, val)
+#define OUTREG(addr, val) MMIO_OUT32(pMga->IOBase, addr, val)
+
+#define MGAIOMAPSIZE		0x00004000
+
+
+typedef struct {
+  int               Chipset;          /**< \brief Chipset number */
+
+  int               irq;              /**< \brief IRQ number */
+
+
+  int               frontOffset;      /**< \brief Front color buffer offset */
+  int               frontPitch;       /**< \brief Front color buffer pitch */
+  int               backOffset;       /**< \brief Back color buffer offset */
+  int               backPitch;        /**< \brief Back color buffer pitch */
+  int               depthOffset;      /**< \brief Depth buffer offset */
+  int               depthPitch;       /**< \brief Depth buffer pitch */
+  int               textureOffset;    /**< \brief Texture area offset */
+  int               textureSize;      /**< \brief Texture area size */
+  int               logTextureGranularity;
+
+  /**
+   * \name AGP
+   */
+  /*@{*/
+  drmSize           agpSize;          /**< \brief AGP map size */
+  int               agpMode;          /**< \brief AGP mode */
+  /*@}*/
+
+  drmRegion         agp;
+
+  /* PCI mappings */
+  drmRegion         registers;
+  drmRegion         status;
+
+  /* AGP mappings */
+  drmRegion         warp;
+  drmRegion         primary;
+  drmRegion         buffers;
+  drmRegion         agpTextures;
+
+  drmBufMapPtr      drmBuffers;
+
+  unsigned long     IOAddress;
+  unsigned char    *IOBase;
+  int		    HasSDRAM;
+
+  __u32             reg_ien;
+} MGARec, *MGAPtr;
+
+
+
+#define MGA_FRONT	0x1
+#define MGA_BACK	0x2
+#define MGA_DEPTH	0x4
+
+#define MGA_AGP_1X_MODE		0x01
+#define MGA_AGP_2X_MODE		0x02
+#define MGA_AGP_4X_MODE		0x04
+#define MGA_AGP_MODE_MASK	0x07
+
+
+#endif

src/mesa/drivers/dri/mga/server/mga_bios.h

@@ -0,0 +1,143 @@
+/* $XConsortium: mga_bios.h /main/2 1996/10/28 04:48:23 kaleb $ */
+#ifndef MGA_BIOS_H
+#define MGA_BIOS_H
+
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/mga/mga_bios.h,v 1.3 1998/07/25 16:55:51 dawes Exp $ */
+
+/*
+ * MGABiosInfo - This struct describes the video BIOS info block.
+ *
+ * DESCRIPTION
+ *   Do not mess with this, unless you know what you are doing.
+ *   The data lengths and types are critical.
+ *
+ * HISTORY
+ *   October 7, 1996 - [aem] Andrew E. Mileski
+ *   This struct was shamelessly stolen from the MGA DDK.
+ *   It has been reformatted, and the data types changed.
+ */
+typedef struct {
+	/* Length of this structure in bytes */
+	__u16 StructLen;
+
+	/*
+	 * Unique number identifying the product type
+	 * 0 : MGA-S1P20 (2MB base with 175MHz Ramdac)
+	 * 1 : MGA-S1P21 (2MB base with 220MHz Ramdac)
+	 * 2 : Reserved
+	 * 3 : Reserved
+	 * 4 : MGA-S1P40 (4MB base with 175MHz Ramdac)
+	 * 5 : MGA-S1P41 (4MB base with 220MHz Ramdac)
+	 */
+	__u16 ProductID;
+
+	/* Serial number of the board */
+	__u8 SerNo[ 10 ];
+
+	/*
+	 * Manufacturing date of the board (at product test)
+	 * Format: yyyy yyym mmmd dddd
+	 */
+	__u16 ManufDate;
+
+	/* Identification of manufacturing site */
+	__u16 ManufId;
+
+	/*
+	 * Number and revision level of the PCB
+	 * Format: nnnn nnnn nnnr rrrr
+	 *         n = PCB number ex:576 (from 0->2047)
+	 *         r = PCB revision      (from 0->31)
+	 */
+	__u16 PCBInfo;
+
+	/* Identification of any PMBs */
+	__u16 PMBInfo;
+
+	/*
+	 * Bit  0-7  : Ramdac speed (0=175MHz, 1=220MHz)
+	 * Bit  8-15 : Ramdac type  (0=TVP3026, 1=TVP3027)
+	 */
+	__u16 RamdacType;
+
+	/* Maximum PCLK of the ramdac */
+	__u16 PclkMax;
+
+	/* Maximum LDCLK supported by the WRAM memory */
+	__u16 LclkMax;
+
+	/* Maximum MCLK of base board */
+	__u16 ClkBase;
+
+	/* Maximum MCLK of 4Mb board */
+	__u16 Clk4MB;
+
+	/* Maximum MCLK of 8Mb board */
+	__u16 Clk8MB;
+
+	/* Maximum MCLK of board with multimedia module */
+	__u16 ClkMod;
+
+	/* Diagnostic test pass frequency */
+	__u16 TestClk;
+
+	/* Default VGA mode1 pixel frequency */
+	__u16 VGAFreq1;
+
+	/* Default VGA mode2 pixel frequency */
+	__u16 VGAFreq2;
+
+	/* Date of last BIOS programming/update */
+	__u16 ProgramDate;
+
+	/* Number of times BIOS has been programmed */
+	__u16 ProgramCnt;
+
+	/* Support for up to 32 hardware/software options */
+	__u32 Options;
+
+	/* Support for up to 32 hardware/software features */
+	__u32 FeatFlag;
+
+	/* Definition of VGA mode MCLK */
+	__u16 VGAClk;
+
+	/* Indicate the revision level of this header struct */
+	__u16 StructRev;
+
+	__u16 Reserved[ 3 ];
+} MGABiosInfo;
+
+/* from the PINS structure, refer pins info from MGA */
+typedef struct tagParamMGA {
+	__u16 	PinID;		/* 0 */
+	__u8	StructLen;	/* 2 */
+	__u8	Rsvd1;		/* 3 */
+	__u16	StructRev;	/* 4 */
+	__u16	ProgramDate;	/* 6 */
+	__u16	ProgramCnt;	/* 8 */
+	__u16	ProductID;	/* 10 */
+	__u8	SerNo[16];	/* 12 */
+	__u8	PLInfo[6];	/* 28 */
+	__u16	PCBInfo;	/* 34 */
+	__u32	FeatFlag;	/* 36 */
+	__u8	RamdacType;	/* 40 */
+	__u8	RamdacSpeed;	/* 41 */
+	__u8	PclkMax;	/* 42 */
+	__u8	ClkGE;		/* 43 */
+	__u8   ClkMem;		/* 44 */
+	__u8	Clk4MB;		/* 45 */
+	__u8	Clk8MB;		/* 46 */
+	__u8	ClkMod;		/* 47 */
+	__u8	TestClk;	/* 48 */
+	__u8	VGAFreq1;	/* 49 */
+	__u8	VGAFreq2;	/* 50 */
+	__u8	MCTLWTST;	/* 51 */
+	__u8	VidCtrl;	/* 52 */
+	__u8	Clk12MB;	/* 53 */
+	__u8	Clk16MB;	/* 54 */
+	__u8	Reserved[8];	/* 55-62 */
+	__u8	PinCheck;	/* 63 */
+}	MGABios2Info;
+
+#endif

src/mesa/drivers/dri/mga/server/mga_common.h

@@ -0,0 +1,152 @@
+/* mga_common.h -- common header definitions for MGA 2D/3D/DRM suite
+ *
+ * Copyright 2002 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * PRECISION INSIGHT AND/OR ITS SUPPLIERS 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.
+ *
+ * Converted to common header format:
+ *   Jens Owen <jens@tungstengraphics.com>
+ *
+ * $XFree86: xc/programs/Xserver/hw/xfree86/drivers/mga/mga_common.h,v 1.2 2002/12/16 16:19:18 dawes Exp $
+ *
+ */
+
+#ifndef _MGA_COMMON_H_
+#define _MGA_COMMON_H_
+
+/*
+ * WARNING: If you change any of these defines, make sure to change
+ * the kernel include file as well (mga_drm.h)
+ */
+
+#define  DRM_MGA_IDLE_RETRY          2048
+#define  DRM_MGA_NR_TEX_HEAPS        2
+
+typedef struct {
+   int installed;
+   unsigned long phys_addr;
+   int size;
+} drmMGAWarpIndex;
+
+/* Driver specific DRM command indices
+ * NOTE: these are not OS specific, but they are driver specific
+ */
+#define DRM_MGA_INIT              0x00
+#define DRM_MGA_FLUSH             0x01
+#define DRM_MGA_RESET             0x02
+#define DRM_MGA_SWAP              0x03
+#define DRM_MGA_CLEAR             0x04
+#define DRM_MGA_VERTEX            0x05
+#define DRM_MGA_INDICES           0x06
+#define DRM_MGA_ILOAD             0x07
+#define DRM_MGA_BLIT              0x08
+#define DRM_MGA_GETPARAM          0x09
+
+typedef struct {
+   enum {
+      MGA_INIT_DMA    = 0x01,
+      MGA_CLEANUP_DMA = 0x02
+   } func;
+
+   unsigned long sarea_priv_offset;
+
+   int chipset;
+   int sgram;
+
+   unsigned int maccess;
+
+   unsigned int fb_cpp;
+   unsigned int front_offset, front_pitch;
+   unsigned int back_offset, back_pitch;
+
+   unsigned int depth_cpp;
+   unsigned int depth_offset, depth_pitch;
+
+   unsigned int texture_offset[DRM_MGA_NR_TEX_HEAPS];
+   unsigned int texture_size[DRM_MGA_NR_TEX_HEAPS];
+
+   unsigned long fb_offset;
+   unsigned long mmio_offset;
+   unsigned long status_offset;
+   unsigned long warp_offset;
+   unsigned long primary_offset;
+   unsigned long buffers_offset;
+} drmMGAInit;
+
+typedef enum {
+   DRM_MGA_LOCK_READY      = 0x01, /* Wait until hardware is ready for DMA */
+   DRM_MGA_LOCK_QUIESCENT  = 0x02, /* Wait until hardware quiescent        */
+   DRM_MGA_LOCK_FLUSH      = 0x04, /* Flush this context's DMA queue first */
+   DRM_MGA_LOCK_FLUSH_ALL  = 0x08, /* Flush all DMA queues first           */
+                                   /* These *HALT* flags aren't supported yet
+                                      -- they will be used to support the
+                                         full-screen DGA-like mode.        */
+   DRM_MGA_HALT_ALL_QUEUES = 0x10, /* Halt all current and future queues   */
+   DRM_MGA_HALT_CUR_QUEUES = 0x20  /* Halt all current queues              */
+} drmMGALockFlags;
+
+typedef struct {
+   int             context;
+   drmMGALockFlags flags;
+} drmMGALock;
+
+typedef struct {
+   int idx;
+   unsigned int dstorg;
+   unsigned int length;
+} drmMGAIload;
+
+typedef struct {
+   unsigned int flags;
+   unsigned int clear_color;
+   unsigned int clear_depth;
+   unsigned int color_mask;
+   unsigned int depth_mask;
+} drmMGAClearRec;
+
+typedef struct {
+   int idx;                        /* buffer to queue */
+   int used;                       /* bytes in use */
+   int discard;                    /* client finished with buffer?  */
+} drmMGAVertex;
+
+typedef struct {
+        unsigned int planemask;
+        unsigned int srcorg;
+        unsigned int dstorg;
+        int src_pitch, dst_pitch;
+        int delta_sx, delta_sy;
+        int delta_dx, delta_dy;
+        int height, ydir;               /* flip image vertically */
+        int source_pitch, dest_pitch;
+} drmMGABlit;
+
+/* 3.1: An ioctl to get parameters that aren't available to the 3d
+ * client any other way.  
+ */
+#define MGA_PARAM_IRQ_NR            1
+
+typedef struct {
+	int param;
+	int *value;
+} drmMGAGetParam;
+
+#endif

src/mesa/drivers/dri/mga/server/mga_dri.h

@@ -0,0 +1,84 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/mga/mga_dri.h,v 1.8 2002/11/29 11:06:42 eich Exp $ */
+
+/*
+ * Copyright 2000 VA Linux Systems Inc., Fremont, California.
+ * 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *   Keith Whitwell <keith@tungstengraphics.com>
+ *   Gareth Hughes <gareth@valinux.com>
+ */
+
+#ifndef __MGA_DRI_H__
+#define __MGA_DRI_H__
+
+#include "xf86drm.h"
+#include "mga_common.h"
+
+#define MGA_DEFAULT_AGP_SIZE     64
+#define MGA_DEFAULT_AGP_MODE     4
+#define MGA_MAX_AGP_MODE         4
+
+/* Buffer are aligned on 4096 byte boundaries.
+ */
+#define MGA_BUFFER_ALIGN	0x00000fff
+
+typedef struct {
+   int chipset;
+   int width;
+   int height;
+   int mem;
+   int cpp;
+
+   int agpMode;
+
+   int frontOffset;
+   int frontPitch;
+
+   int backOffset;
+   int backPitch;
+
+   int depthOffset;
+   int depthPitch;
+
+   int textureOffset;
+   int textureSize;
+   int logTextureGranularity;
+
+   /* Allow calculation of setup dma addresses.
+    */
+   unsigned int agpBufferOffset;
+
+   unsigned int agpTextureOffset;
+   unsigned int agpTextureSize;
+   int logAgpTextureGranularity;
+
+   unsigned int mAccess;
+
+   drmRegion registers;
+   drmRegion status;
+   drmRegion primary;
+   drmRegion buffers;
+   unsigned int sarea_priv_offset;
+} MGADRIRec, *MGADRIPtr;
+
+#endif

src/mesa/drivers/dri/mga/server/mga_macros.h

@@ -0,0 +1,118 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/mga/mga_macros.h,v 1.22 2002/02/20 17:17:50 dawes Exp $ */
+
+#ifndef _MGA_MACROS_H_
+#define _MGA_MACROS_H_
+
+#ifndef PSZ
+#define PSZ 8
+#endif
+
+#if PSZ == 8
+#define REPLICATE(r) r &= 0xFF; r |= r << 8; r |= r << 16
+#elif PSZ == 16
+#define REPLICATE(r) r &= 0xFFFF; r |= r << 16
+#elif PSZ == 24
+#define REPLICATE(r) r &= 0xFFFFFF; r |= r << 24
+#else
+#define REPLICATE(r) /* */
+#endif
+
+#define RGBEQUAL(c) (!((((c) >> 8) ^ (c)) & 0xffff))
+
+#ifdef XF86DRI
+#define MGA_SYNC_XTAG                 0x275f4200
+
+#define MGABUSYWAIT() do { \
+OUTREG(MGAREG_DWGSYNC, MGA_SYNC_XTAG); \
+while(INREG(MGAREG_DWGSYNC) != MGA_SYNC_XTAG) ; \
+}while(0);
+
+#endif
+
+#define MGAISBUSY() (INREG8(MGAREG_Status + 2) & 0x01)
+
+#define WAITFIFO(cnt) \
+   if(!pMga->UsePCIRetry) {\
+	register int n = cnt; \
+	if(n > pMga->FifoSize) n = pMga->FifoSize; \
+	while(pMga->fifoCount < (n))\
+	    pMga->fifoCount = INREG8(MGAREG_FIFOSTATUS);\
+	pMga->fifoCount -= n;\
+   }
+
+#define XYADDRESS(x,y) \
+    ((y) * pMga->CurrentLayout.displayWidth + (x) + pMga->YDstOrg)
+
+#define MAKEDMAINDEX(index)  ((((index) >> 2) & 0x7f) | (((index) >> 6) & 0x80))
+
+#define DMAINDICES(one,two,three,four)	\
+	( MAKEDMAINDEX(one) | \
+	 (MAKEDMAINDEX(two) << 8) | \
+	 (MAKEDMAINDEX(three) << 16) | \
+ 	 (MAKEDMAINDEX(four) << 24) )
+
+#if PSZ == 24
+#define SET_PLANEMASK(p) /**/
+#else
+#define SET_PLANEMASK(p) \
+	if(!(pMga->AccelFlags & MGA_NO_PLANEMASK) && ((p) != pMga->PlaneMask)) { \
+	   pMga->PlaneMask = (p); \
+	   REPLICATE((p)); \
+	   OUTREG(MGAREG_PLNWT,(p)); \
+	}
+#endif
+
+#define SET_FOREGROUND(c) \
+	if((c) != pMga->FgColor) { \
+	   pMga->FgColor = (c); \
+	   REPLICATE((c)); \
+	   OUTREG(MGAREG_FCOL,(c)); \
+	}
+
+#define SET_BACKGROUND(c) \
+	if((c) != pMga->BgColor) { \
+	   pMga->BgColor = (c); \
+	   REPLICATE((c)); \
+	   OUTREG(MGAREG_BCOL,(c)); \
+	}
+
+#define DISABLE_CLIP() { \
+	pMga->AccelFlags &= ~CLIPPER_ON; \
+	WAITFIFO(1); \
+	OUTREG(MGAREG_CXBNDRY, 0xFFFF0000); }
+
+#ifdef XF86DRI
+#define CHECK_DMA_QUIESCENT(pMGA, pScrn) {	\
+   if (!pMGA->haveQuiescense) {			\
+      pMGA->GetQuiescence( pScrn );		\
+   }						\
+}
+#else
+#define CHECK_DMA_QUIESCENT(pMGA, pScrn)
+#endif
+
+#ifdef USEMGAHAL
+#define HAL_CHIPSETS ((pMga->Chipset == PCI_CHIP_MGAG200_PCI) || \
+		  (pMga->Chipset == PCI_CHIP_MGAG200) || \
+		  (pMga->Chipset == PCI_CHIP_MGAG400) || \
+		  (pMga->Chipset == PCI_CHIP_MGAG550))
+    
+#define MGA_HAL(x) { \
+	MGAPtr pMga = MGAPTR(pScrn); \
+	if (pMga->HALLoaded && HAL_CHIPSETS) { x; } \
+}
+#define MGA_NOT_HAL(x) { \
+	MGAPtr pMga = MGAPTR(pScrn); \
+	if (!pMga->HALLoaded || !HAL_CHIPSETS) { x; } \
+}
+#else
+#define MGA_NOT_HAL(x) { x; }
+#endif
+
+#define MGAISGx50(x) ( (((x)->Chipset == PCI_CHIP_MGAG400) && ((x)->ChipRev >= 0x80)) || \
+		       ((x)->Chipset == PCI_CHIP_MGAG550) )
+
+#define MGA_DH_NEEDS_HAL(x) (((x)->Chipset == PCI_CHIP_MGAG400) && \
+			     ((x)->ChipRev < 0x80))
+
+#endif /* _MGA_MACROS_H_ */

src/mesa/drivers/dri/mga/server/mga_reg.h

@@ -0,0 +1,484 @@
+/* $XConsortium: mgareg.h /main/2 1996/10/25 10:33:21 kaleb $ */
+
+
+
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/mga/mga_reg.h,v 1.18 2001/09/26 12:59:18 alanh Exp $ */
+
+
+
+/*
+ * MGA Millennium (MGA2064W) functions
+ * MGA Mystique (MGA1064SG) functions
+ *
+ * Copyright 1996 The XFree86 Project, Inc.
+ *
+ * Authors
+ *		Dirk Hohndel
+ *			hohndel@XFree86.Org
+ *		David Dawes
+ *			dawes@XFree86.Org
+ * Contributors:
+ *		Guy DESBIEF, Aix-en-provence, France
+ *			g.desbief@aix.pacwan.net
+ *		MGA1064SG Mystique register file
+ */
+
+
+#ifndef _MGA_REG_H_
+#define _MGA_REG_H_
+
+#define	MGAREG_DWGCTL		0x1c00
+#define	MGAREG_MACCESS		0x1c04
+#define	MGA_MACCESS_PW16        0x00000001
+#define	MGA_MACCESS_PW32        0x00000002
+/* the following is a mystique only register */
+#define MGAREG_MCTLWTST		0x1c08
+#define	MGAREG_ZORG		0x1c0c
+
+#define	MGAREG_PAT0		0x1c10
+#define	MGAREG_PAT1		0x1c14
+#define	MGAREG_PLNWT		0x1c1c
+
+#define	MGAREG_BCOL		0x1c20
+#define	MGAREG_FCOL		0x1c24
+
+#define	MGAREG_SRC0		0x1c30
+#define	MGAREG_SRC1		0x1c34
+#define	MGAREG_SRC2		0x1c38
+#define	MGAREG_SRC3		0x1c3c
+
+#define	MGAREG_XYSTRT		0x1c40
+#define	MGAREG_XYEND		0x1c44
+
+#define	MGAREG_SHIFT		0x1c50
+/* the following is a mystique only register */
+#define MGAREG_DMAPAD		0x1c54
+#define	MGAREG_SGN		0x1c58
+#define	MGAREG_LEN		0x1c5c
+
+#define	MGAREG_AR0		0x1c60
+#define	MGAREG_AR1		0x1c64
+#define	MGAREG_AR2		0x1c68
+#define	MGAREG_AR3		0x1c6c
+#define	MGAREG_AR4		0x1c70
+#define	MGAREG_AR5		0x1c74
+#define	MGAREG_AR6		0x1c78
+
+#define	MGAREG_CXBNDRY		0x1c80
+#define	MGAREG_FXBNDRY		0x1c84
+#define	MGAREG_YDSTLEN		0x1c88
+#define	MGAREG_PITCH		0x1c8c
+
+#define	MGAREG_YDST		0x1c90
+#define	MGAREG_YDSTORG		0x1c94
+#define	MGAREG_YTOP		0x1c98
+#define	MGAREG_YBOT		0x1c9c
+
+#define	MGAREG_CXLEFT		0x1ca0
+#define	MGAREG_CXRIGHT		0x1ca4
+#define	MGAREG_FXLEFT		0x1ca8
+#define	MGAREG_FXRIGHT		0x1cac
+
+#define	MGAREG_XDST		0x1cb0
+
+#define	MGAREG_DR0		0x1cc0
+#define	MGAREG_DR1		0x1cc4
+#define	MGAREG_DR2		0x1cc8
+#define	MGAREG_DR3		0x1ccc
+
+#define	MGAREG_DR4		0x1cd0
+#define	MGAREG_DR5		0x1cd4
+#define	MGAREG_DR6		0x1cd8
+#define	MGAREG_DR7		0x1cdc
+
+#define	MGAREG_DR8		0x1ce0
+#define	MGAREG_DR9		0x1ce4
+#define	MGAREG_DR10		0x1ce8
+#define	MGAREG_DR11		0x1cec
+
+#define	MGAREG_DR12		0x1cf0
+#define	MGAREG_DR13		0x1cf4
+#define	MGAREG_DR14		0x1cf8
+#define	MGAREG_DR15		0x1cfc
+
+#define MGAREG_SRCORG		0x2cb4
+#define MGAREG_DSTORG		0x2cb8
+
+/* add or or this to one of the previous "power registers" to start
+   the drawing engine */
+
+#define MGAREG_EXEC		0x0100
+
+#define	MGAREG_FIFOSTATUS	0x1e10
+#define	MGAREG_Status		0x1e14
+#define	MGAREG_ICLEAR		0x1e18
+#define	MGAREG_IEN		0x1e1c
+
+#define	MGAREG_VCOUNT		0x1e20
+
+#define	MGAREG_Reset		0x1e40
+
+#define	MGAREG_OPMODE		0x1e54
+
+/* Warp Registers */
+#define MGAREG_WIADDR           0x1dc0
+#define MGAREG_WIADDR2          0x1dd8
+#define MGAREG_WGETMSB          0x1dc8
+#define MGAREG_WVRTXSZ          0x1dcc
+#define MGAREG_WACCEPTSEQ       0x1dd4
+#define MGAREG_WMISC            0x1e70
+
+/* OPMODE register additives */
+
+#define MGAOPM_DMA_GENERAL	(0x00 << 2)
+#define MGAOPM_DMA_BLIT		(0x01 << 2)
+#define MGAOPM_DMA_VECTOR	(0x10 << 2)
+
+/* DWGCTL register additives */
+
+/* Lines */
+
+#define MGADWG_LINE_OPEN	0x00
+#define MGADWG_AUTOLINE_OPEN	0x01
+#define MGADWG_LINE_CLOSE	0x02
+#define MGADWG_AUTOLINE_CLOSE	0x03
+
+/* Trapezoids */
+#define MGADWG_TRAP		0x04
+#define MGADWG_TEXTURE_TRAP	0x05
+
+/* BitBlts */
+
+#define MGADWG_BITBLT		0x08
+#define MGADWG_FBITBLT		0x0c
+#define MGADWG_ILOAD		0x09
+#define MGADWG_ILOAD_SCALE	0x0d
+#define MGADWG_ILOAD_FILTER	0x0f
+#define MGADWG_ILOAD_HIQH	0x07
+#define MGADWG_ILOAD_HIQHV	0x0e
+#define MGADWG_IDUMP		0x0a
+
+/* atype access to WRAM */
+
+#define MGADWG_RPL		( 0x00 << 4 )
+#define MGADWG_RSTR		( 0x01 << 4 )
+#define MGADWG_ZI		( 0x03 << 4 )
+#define MGADWG_BLK 		( 0x04 << 4 )
+#define MGADWG_I		( 0x07 << 4 )
+
+/* specifies whether bit blits are linear or xy */
+#define MGADWG_LINEAR		( 0x01 << 7 )
+
+/* z drawing mode. use MGADWG_NOZCMP for always */
+
+#define MGADWG_NOZCMP		( 0x00 << 8 )
+#define MGADWG_ZE		( 0x02 << 8 )
+#define MGADWG_ZNE		( 0x03 << 8 )
+#define MGADWG_ZLT		( 0x04 << 8 )
+#define MGADWG_ZLTE		( 0x05 << 8 )
+#define MGADWG_GT		( 0x06 << 8 )
+#define MGADWG_GTE		( 0x07 << 8 )
+
+/* use this to force colour expansion circuitry to do its stuff */
+
+#define MGADWG_SOLID		( 0x01 << 11 )
+
+/* ar register at zero */
+
+#define MGADWG_ARZERO		( 0x01 << 12 )
+
+#define MGADWG_SGNZERO		( 0x01 << 13 )
+
+#define MGADWG_SHIFTZERO	( 0x01 << 14 )
+
+/* See table on 4-43 for bop ALU operations */
+
+/* See table on 4-44 for translucidity masks */
+
+#define MGADWG_BMONOLEF		( 0x00 << 25 )
+#define MGADWG_BMONOWF		( 0x04 << 25 )
+#define MGADWG_BPLAN		( 0x01 << 25 )
+
+/* note that if bfcol is specified and you're doing a bitblt, it causes
+   a fbitblt to be performed, so check that you obey the fbitblt rules */
+
+#define MGADWG_BFCOL   		( 0x02 << 25 )
+#define MGADWG_BUYUV		( 0x0e << 25 )
+#define MGADWG_BU32BGR		( 0x03 << 25 )
+#define MGADWG_BU32RGB		( 0x07 << 25 )
+#define MGADWG_BU24BGR		( 0x0b << 25 )
+#define MGADWG_BU24RGB		( 0x0f << 25 )
+
+#define MGADWG_PATTERN		( 0x01 << 29 )
+#define MGADWG_TRANSC		( 0x01 << 30 )
+#define MGAREG_MISC_WRITE	0x3c2
+#define MGAREG_MISC_READ	0x3cc
+#define MGAREG_MISC_IOADSEL	(0x1 << 0)
+#define MGAREG_MISC_RAMMAPEN	(0x1 << 1)
+#define MGAREG_MISC_CLK_SEL_VGA25	(0x0 << 2)
+#define MGAREG_MISC_CLK_SEL_VGA28	(0x1 << 2)
+#define MGAREG_MISC_CLK_SEL_MGA_PIX	(0x2 << 2)
+#define MGAREG_MISC_CLK_SEL_MGA_MSK	(0x3 << 2)
+#define MGAREG_MISC_VIDEO_DIS	(0x1 << 4)
+#define MGAREG_MISC_HIGH_PG_SEL	(0x1 << 5)
+
+/* MMIO VGA registers */
+#define MGAREG_SEQ_INDEX	0x1fc4
+#define MGAREG_SEQ_DATA		0x1fc5
+#define MGAREG_CRTC_INDEX	0x1fd4
+#define MGAREG_CRTC_DATA	0x1fd5
+#define MGAREG_CRTCEXT_INDEX	0x1fde
+#define MGAREG_CRTCEXT_DATA	0x1fdf
+
+
+
+/* MGA bits for registers PCI_OPTION_REG */
+#define MGA1064_OPT_SYS_CLK_PCI   		( 0x00 << 0 )
+#define MGA1064_OPT_SYS_CLK_PLL   		( 0x01 << 0 )
+#define MGA1064_OPT_SYS_CLK_EXT   		( 0x02 << 0 )
+#define MGA1064_OPT_SYS_CLK_MSK   		( 0x03 << 0 )
+
+#define MGA1064_OPT_SYS_CLK_DIS   		( 0x01 << 2 )
+#define MGA1064_OPT_G_CLK_DIV_1   		( 0x01 << 3 )
+#define MGA1064_OPT_M_CLK_DIV_1   		( 0x01 << 4 )
+
+#define MGA1064_OPT_SYS_PLL_PDN   		( 0x01 << 5 )
+#define MGA1064_OPT_VGA_ION   		( 0x01 << 8 )
+
+/* MGA registers in PCI config space */
+#define PCI_MGA_INDEX		0x44
+#define PCI_MGA_DATA		0x48
+#define PCI_MGA_OPTION2		0x50
+#define PCI_MGA_OPTION3		0x54
+
+#define RAMDAC_OFFSET		0x3c00
+
+/* TVP3026 direct registers */
+
+#define TVP3026_INDEX		0x00
+#define TVP3026_WADR_PAL	0x00
+#define TVP3026_COL_PAL		0x01
+#define TVP3026_PIX_RD_MSK	0x02
+#define TVP3026_RADR_PAL	0x03
+#define TVP3026_CUR_COL_ADDR	0x04
+#define TVP3026_CUR_COL_DATA	0x05
+#define TVP3026_DATA		0x0a
+#define TVP3026_CUR_RAM		0x0b
+#define TVP3026_CUR_XLOW	0x0c
+#define TVP3026_CUR_XHI		0x0d
+#define TVP3026_CUR_YLOW	0x0e
+#define TVP3026_CUR_YHI		0x0f
+
+/* TVP3026 indirect registers */
+
+#define TVP3026_SILICON_REV	0x01
+#define TVP3026_CURSOR_CTL	0x06
+#define TVP3026_LATCH_CTL	0x0f
+#define TVP3026_TRUE_COLOR_CTL	0x18
+#define TVP3026_MUX_CTL		0x19
+#define TVP3026_CLK_SEL		0x1a
+#define TVP3026_PAL_PAGE	0x1c
+#define TVP3026_GEN_CTL		0x1d
+#define TVP3026_MISC_CTL	0x1e
+#define TVP3026_GEN_IO_CTL	0x2a
+#define TVP3026_GEN_IO_DATA	0x2b
+#define TVP3026_PLL_ADDR	0x2c
+#define TVP3026_PIX_CLK_DATA	0x2d
+#define TVP3026_MEM_CLK_DATA	0x2e
+#define TVP3026_LOAD_CLK_DATA	0x2f
+#define TVP3026_KEY_RED_LOW	0x32
+#define TVP3026_KEY_RED_HI	0x33
+#define TVP3026_KEY_GREEN_LOW	0x34
+#define TVP3026_KEY_GREEN_HI	0x35
+#define TVP3026_KEY_BLUE_LOW	0x36
+#define TVP3026_KEY_BLUE_HI	0x37
+#define TVP3026_KEY_CTL		0x38
+#define TVP3026_MCLK_CTL	0x39
+#define TVP3026_SENSE_TEST	0x3a
+#define TVP3026_TEST_DATA	0x3b
+#define TVP3026_CRC_LSB		0x3c
+#define TVP3026_CRC_MSB		0x3d
+#define TVP3026_CRC_CTL		0x3e
+#define TVP3026_ID		0x3f
+#define TVP3026_RESET		0xff
+
+
+/* MGA1064 DAC Register file */
+/* MGA1064 direct registers */
+
+#define MGA1064_INDEX		0x00
+#define MGA1064_WADR_PAL	0x00
+#define MGA1064_COL_PAL		0x01
+#define MGA1064_PIX_RD_MSK	0x02
+#define MGA1064_RADR_PAL	0x03
+#define MGA1064_DATA		0x0a
+
+#define MGA1064_CUR_XLOW	0x0c
+#define MGA1064_CUR_XHI		0x0d
+#define MGA1064_CUR_YLOW	0x0e
+#define MGA1064_CUR_YHI		0x0f
+
+/* MGA1064 indirect registers */
+#define MGA1064_DVI_PIPE_CTL    0x03
+#define MGA1064_CURSOR_BASE_ADR_LOW	0x04
+#define MGA1064_CURSOR_BASE_ADR_HI	0x05
+#define MGA1064_CURSOR_CTL	0x06
+#define MGA1064_CURSOR_COL0_RED	0x08
+#define MGA1064_CURSOR_COL0_GREEN	0x09
+#define MGA1064_CURSOR_COL0_BLUE	0x0a
+
+#define MGA1064_CURSOR_COL1_RED	0x0c
+#define MGA1064_CURSOR_COL1_GREEN	0x0d
+#define MGA1064_CURSOR_COL1_BLUE	0x0e
+
+#define MGA1064_CURSOR_COL2_RED	0x010
+#define MGA1064_CURSOR_COL2_GREEN	0x011
+#define MGA1064_CURSOR_COL2_BLUE	0x012
+
+#define MGA1064_VREF_CTL	0x018
+
+#define MGA1064_MUL_CTL		0x19
+#define MGA1064_MUL_CTL_8bits		0x0
+#define MGA1064_MUL_CTL_15bits		0x01
+#define MGA1064_MUL_CTL_16bits		0x02
+#define MGA1064_MUL_CTL_24bits		0x03
+#define MGA1064_MUL_CTL_32bits		0x04
+#define MGA1064_MUL_CTL_2G8V16bits		0x05
+#define MGA1064_MUL_CTL_G16V16bits		0x06
+#define MGA1064_MUL_CTL_32_24bits		0x07
+
+#define MGAGDAC_XVREFCTRL		0x18
+#define MGA1064_PIX_CLK_CTL		0x1a
+#define MGA1064_PIX_CLK_CTL_CLK_DIS   		( 0x01 << 2 )
+#define MGA1064_PIX_CLK_CTL_CLK_POW_DOWN   	( 0x01 << 3 )
+#define MGA1064_PIX_CLK_CTL_SEL_PCI   		( 0x00 << 0 )
+#define MGA1064_PIX_CLK_CTL_SEL_PLL   		( 0x01 << 0 )
+#define MGA1064_PIX_CLK_CTL_SEL_EXT   		( 0x02 << 0 )
+#define MGA1064_PIX_CLK_CTL_SEL_MSK   		( 0x03 << 0 )
+
+#define MGA1064_GEN_CTL		0x1d
+#define MGA1064_MISC_CTL	0x1e
+#define MGA1064_MISC_CTL_DAC_POW_DN   		( 0x01 << 0 )
+#define MGA1064_MISC_CTL_VGA   		( 0x01 << 1 )
+#define MGA1064_MISC_CTL_DIS_CON   		( 0x03 << 1 )
+#define MGA1064_MISC_CTL_MAFC   		( 0x02 << 1 )
+#define MGA1064_MISC_CTL_VGA8   		( 0x01 << 3 )
+#define MGA1064_MISC_CTL_DAC_RAM_CS   		( 0x01 << 4 )
+
+#define MGA1064_GEN_IO_CTL	0x2a
+#define MGA1064_GEN_IO_DATA	0x2b
+#define MGA1064_SYS_PLL_M	0x2c
+#define MGA1064_SYS_PLL_N	0x2d
+#define MGA1064_SYS_PLL_P	0x2e
+#define MGA1064_SYS_PLL_STAT	0x2f
+#define MGA1064_ZOOM_CTL	0x38
+#define MGA1064_SENSE_TST	0x3a
+
+#define MGA1064_CRC_LSB		0x3c
+#define MGA1064_CRC_MSB		0x3d
+#define MGA1064_CRC_CTL		0x3e
+#define MGA1064_COL_KEY_MSK_LSB		0x40
+#define MGA1064_COL_KEY_MSK_MSB		0x41
+#define MGA1064_COL_KEY_LSB		0x42
+#define MGA1064_COL_KEY_MSB		0x43
+#define MGA1064_PIX_PLLA_M	0x44
+#define MGA1064_PIX_PLLA_N	0x45
+#define MGA1064_PIX_PLLA_P	0x46
+#define MGA1064_PIX_PLLB_M	0x48
+#define MGA1064_PIX_PLLB_N	0x49
+#define MGA1064_PIX_PLLB_P	0x4a
+#define MGA1064_PIX_PLLC_M	0x4c
+#define MGA1064_PIX_PLLC_N	0x4d
+#define MGA1064_PIX_PLLC_P	0x4e
+
+#define MGA1064_PIX_PLL_STAT	0x4f
+
+/*Added for G450 dual head*/
+/* Supported PLL*/
+#define __PIXEL_PLL                 1
+#define __SYSTEM_PLL                2
+#define __VIDEO_PLL                 3
+
+#define MGA1064_VID_PLL_P       0x8D
+#define MGA1064_VID_PLL_M       0x8E
+#define MGA1064_VID_PLL_N       0x8F
+
+#define MGA1064_DISP_CTL        0x8a
+#define MGA1064_SYNC_CTL        0x8b
+#define MGA1064_PWR_CTL         0xa0
+#define MGA1064_PAN_CTL         0xa2
+
+/* Using crtc2 */
+#define MGAREG2_C2CTL            0x10
+#define MGAREG2_C2HPARAM         0x14
+#define MGAREG2_C2HSYNC          0x18
+#define MGAREG2_C2VPARAM         0x1c
+#define MGAREG2_C2VSYNC          0x20
+#define MGAREG2_C2STARTADD0      0x28
+
+#define MGAREG2_C2OFFSET         0x40
+#define MGAREG2_C2DATACTL        0x4c
+
+#define MGAREG_C2CTL            0x3c10
+#define MGAREG_C2HPARAM         0x3c14
+#define MGAREG_C2HSYNC          0x3c18
+#define MGAREG_C2VPARAM         0x3c1c
+#define MGAREG_C2VSYNC          0x3c20
+#define MGAREG_C2STARTADD0      0x3c28
+
+#define MGAREG_C2OFFSET         0x3c40
+#define MGAREG_C2DATACTL        0x3c4c
+
+#define MGA1064_DISP_CTL        0x8a
+#define MGA1064_SYNC_CTL        0x8b
+#define MGA1064_PWR_CTL         0xa0
+
+/* video register */
+
+#define MGAREG_BESA1C3ORG	0x3d60
+#define MGAREG_BESA1CORG	0x3d10
+#define MGAREG_BESA1ORG		0x3d00
+#define MGAREG_BESCTL		0x3d20
+#define MGAREG_BESGLOBCTL	0x3dc0
+#define MGAREG_BESHCOORD	0x3d28
+#define MGAREG_BESHISCAL	0x3d30
+#define MGAREG_BESHSRCEND	0x3d3c
+#define MGAREG_BESHSRCLST	0x3d50
+#define MGAREG_BESHSRCST	0x3d38
+#define MGAREG_BESLUMACTL	0x3d40
+#define MGAREG_BESPITCH		0x3d24
+#define MGAREG_BESV1SRCLST	0x3d54
+#define MGAREG_BESV1WGHT	0x3d48
+#define MGAREG_BESVCOORD	0x3d2c
+#define MGAREG_BESVISCAL	0x3d34
+
+/* texture engine registers */
+
+#define MGAREG_TMR0		0x2c00
+#define MGAREG_TMR1		0x2c04
+#define MGAREG_TMR2		0x2c08
+#define MGAREG_TMR3		0x2c0c
+#define MGAREG_TMR4		0x2c10
+#define MGAREG_TMR5		0x2c14
+#define MGAREG_TMR6		0x2c18
+#define MGAREG_TMR7		0x2c1c
+#define MGAREG_TMR8		0x2c20
+#define MGAREG_TEXORG		0x2c24
+#define MGAREG_TEXWIDTH		0x2c28
+#define MGAREG_TEXHEIGHT	0x2c2c
+#define MGAREG_TEXCTL		0x2c30
+#define MGAREG_TEXCTL2		0x2c3c
+#define MGAREG_TEXTRANS		0x2c34
+#define MGAREG_TEXTRANSHIGH	0x2c38
+#define MGAREG_TEXFILTER	0x2c58
+#define MGAREG_ALPHASTART	0x2c70
+#define MGAREG_ALPHAXINC	0x2c74
+#define MGAREG_ALPHAYINC	0x2c78
+#define MGAREG_ALPHACTRL	0x2c7c
+#define MGAREG_DWGSYNC		0x2c4c
+
+#define MGAREG_AGP_PLL		0x1e4c
+#define MGA_AGP2XPLL_ENABLE		0x1
+#define MGA_AGP2XPLL_DISABLE		0x0
+
+#endif

src/mesa/drivers/dri/mga/server/mga_sarea.h

@@ -0,0 +1,222 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/mga/mga_sarea.h,v 1.1 2001/03/21 17:11:47 dawes Exp $ */
+
+/*
+ * Copyright 2000 Gareth Hughes
+ * 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 (including the next
+ * paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * GARETH HUGHES 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.
+ *
+ * Authors:
+ *   Gareth Hughes <gareth@valinux.com>
+ */
+
+#ifndef __MGA_SAREA_H__
+#define __MGA_SAREA_H__
+
+/* WARNING: If you change any of these defines, make sure to change
+ * the kernel include file as well (mga_drm.h)
+ */
+#ifndef __MGA_SAREA_DEFINES__
+#define __MGA_SAREA_DEFINES__
+
+/* WARP pipe flags
+ */
+#define MGA_F			0x1		/* fog */
+#define MGA_A			0x2		/* alpha */
+#define MGA_S			0x4		/* specular */
+#define MGA_T2			0x8		/* multitexture */
+
+#define MGA_WARP_TGZ		0
+#define MGA_WARP_TGZF		(MGA_F)
+#define MGA_WARP_TGZA		(MGA_A)
+#define MGA_WARP_TGZAF		(MGA_F|MGA_A)
+#define MGA_WARP_TGZS		(MGA_S)
+#define MGA_WARP_TGZSF		(MGA_S|MGA_F)
+#define MGA_WARP_TGZSA		(MGA_S|MGA_A)
+#define MGA_WARP_TGZSAF		(MGA_S|MGA_F|MGA_A)
+#define MGA_WARP_T2GZ		(MGA_T2)
+#define MGA_WARP_T2GZF		(MGA_T2|MGA_F)
+#define MGA_WARP_T2GZA		(MGA_T2|MGA_A)
+#define MGA_WARP_T2GZAF		(MGA_T2|MGA_A|MGA_F)
+#define MGA_WARP_T2GZS		(MGA_T2|MGA_S)
+#define MGA_WARP_T2GZSF		(MGA_T2|MGA_S|MGA_F)
+#define MGA_WARP_T2GZSA		(MGA_T2|MGA_S|MGA_A)
+#define MGA_WARP_T2GZSAF	(MGA_T2|MGA_S|MGA_F|MGA_A)
+
+#define MGA_MAX_G200_PIPES	8		/* no multitex */
+#define MGA_MAX_G400_PIPES	16
+#define MGA_MAX_WARP_PIPES	MGA_MAX_G400_PIPES
+#define MGA_WARP_UCODE_SIZE	32768		/* in bytes */
+
+#define MGA_CARD_TYPE_G200	1
+#define MGA_CARD_TYPE_G400	2
+
+
+#define MGA_FRONT		0x1
+#define MGA_BACK		0x2
+#define MGA_DEPTH		0x4
+
+/* What needs to be changed for the current vertex dma buffer?
+ */
+#define MGA_UPLOAD_CONTEXT	0x1
+#define MGA_UPLOAD_TEX0		0x2
+#define MGA_UPLOAD_TEX1		0x4
+#define MGA_UPLOAD_PIPE		0x8
+#define MGA_UPLOAD_TEX0IMAGE	0x10
+#define MGA_UPLOAD_TEX1IMAGE	0x20
+#define MGA_UPLOAD_2D		0x40
+#define MGA_WAIT_AGE		0x80 /* handled client-side */
+#define MGA_UPLOAD_CLIPRECTS	0x100 /* handled client-side */
+#if 0
+#define MGA_DMA_FLUSH		0x200 /* set when someone gets the lock
+					 quiescent */
+#endif
+
+/* 32 buffers of 64k each, total 1 meg.
+ */
+#define MGA_BUFFER_SIZE		(1 << 16)
+#define MGA_NUM_BUFFERS		128
+
+/* Keep these small for testing.
+ */
+#define MGA_NR_SAREA_CLIPRECTS	8
+
+/* 2 heaps (1 for card, 1 for agp), each divided into upto 128
+ * regions, subject to a minimum region size of (1<<16) == 64k.
+ *
+ * Clients may subdivide regions internally, but when sharing between
+ * clients, the region size is the minimum granularity.
+ */
+
+#define MGA_CARD_HEAP			0
+#define MGA_AGP_HEAP			1
+#define MGA_NR_TEX_HEAPS		2
+#define MGA_NR_TEX_REGIONS		16
+#define MGA_LOG_MIN_TEX_REGION_SIZE	16
+
+#endif /* __MGA_SAREA_DEFINES__ */
+
+
+/* Setup registers for 3D context
+ */
+typedef struct {
+   unsigned int dstorg;
+   unsigned int maccess;
+   unsigned int plnwt;
+   unsigned int dwgctl;
+   unsigned int alphactrl;
+   unsigned int fogcolor;
+   unsigned int wflag;
+   unsigned int tdualstage0;
+   unsigned int tdualstage1;
+   unsigned int fcol;
+   unsigned int stencil;
+   unsigned int stencilctl;
+} mga_context_regs_t;
+
+/* Setup registers for 2D, X server
+ */
+typedef struct {
+   unsigned int pitch;
+} mga_server_regs_t;
+
+/* Setup registers for each texture unit
+ */
+typedef struct {
+   unsigned int texctl;
+   unsigned int texctl2;
+   unsigned int texfilter;
+   unsigned int texbordercol;
+   unsigned int texorg;
+   unsigned int texwidth;
+   unsigned int texheight;
+   unsigned int texorg1;
+   unsigned int texorg2;
+   unsigned int texorg3;
+   unsigned int texorg4;
+} mga_texture_regs_t;
+
+/* General ageing mechanism
+ */
+typedef struct {
+	unsigned int head;		/* Position of head pointer          */
+	unsigned int wrap;		/* Primary DMA wrap count            */
+} mga_age_t;
+
+
+/* WARNING: Do not change the SAREA structure without changing the kernel
+ * as well.
+ */
+typedef struct {
+   /* The channel for communication of state information to the kernel
+    * on firing a vertex dma buffer.
+    */
+   mga_context_regs_t ContextState;
+   mga_server_regs_t ServerState;
+   mga_texture_regs_t TexState[2];
+   unsigned int WarpPipe;
+   unsigned int dirty;
+   unsigned int vertsize;
+
+   /* The current cliprects, or a subset thereof.
+    */
+   XF86DRIClipRectRec boxes[MGA_NR_SAREA_CLIPRECTS];
+   unsigned int nbox;
+
+   /* Information about the most recently used 3d drawable.  The
+    * client fills in the req_* fields, the server fills in the
+    * exported_ fields and puts the cliprects into boxes, above.
+    *
+    * The client clears the exported_drawable field before
+    * clobbering the boxes data.
+    */
+
+   unsigned int req_draw_buffer;    /* MGA_FRONT or MGA_BACK */
+
+   unsigned int exported_drawable;
+   unsigned int exported_index;
+   unsigned int exported_stamp;
+   unsigned int exported_buffers;
+   unsigned int exported_nfront;	/* FIXME: verify signedness... */
+   unsigned int exported_nback;
+   int exported_back_x, exported_front_x, exported_w;
+   int exported_back_y, exported_front_y, exported_h;
+   XF86DRIClipRectRec exported_boxes[MGA_NR_SAREA_CLIPRECTS];
+
+   /* Counters for aging textures and for client-side throttling.
+    */
+   unsigned int status[4];
+   unsigned int last_wrap;
+
+   mga_age_t last_frame;
+   unsigned int last_enqueue;       /* last time a buffer was enqueued */
+   unsigned int last_dispatch;      /* age of the most recently dispatched buffer */
+   unsigned int last_quiescent;     /*  */
+
+   /* LRU lists for texture memory in agp space and on the card.
+    */
+   drmTextureRegion texList[MGA_NR_TEX_HEAPS][MGA_NR_TEX_REGIONS+1];
+   unsigned int texAge[MGA_NR_TEX_HEAPS];
+
+   /* Last context that uploaded statel
+    */
+   int ctxOwner;
+} MGASAREAPrivRec, *MGASAREAPrivPtr;
+
+#endif