mga driver, brought over by Jon Smirl

1 files changed, 143 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/mga/mga_xmesa.h b/src/mesa/drivers/dri/mga/mga_xmesa.h
new file mode 100644
index 0000000000..eda996f5a4
--- /dev/null
+++ b/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