mga driver, brought over by Jon Smirl

1 files changed, 113 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/mga/mgaioctl.h b/src/mesa/drivers/dri/mga/mgaioctl.h
new file mode 100644
index 0000000000..b7cf44d6ff
--- /dev/null
+++ b/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