1 files changed, 100 insertions, 0 deletions
diff --git a/trunk/src/via_dmabuffer.h b/trunk/src/via_dmabuffer.h
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+++ b/trunk/src/via_dmabuffer.h
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) Thomas Hellstrom (2005) 
+ *
+ * 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, 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
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ */
+
+#ifndef VIA_DMABUFFER_H
+#define VIA_DMABUFFER_H
+
+#include "via_3d_reg.h"
+
+typedef struct _ViaCommandBuffer
+{
+    ScrnInfoPtr pScrn;
+    CARD32 *buf;
+    CARD32 waitFlags;
+    unsigned pos;
+    unsigned bufSize;
+    int mode;
+    int header_start;
+    int rindex;
+    Bool has3dState;
+    void (*flushFunc) (struct _ViaCommandBuffer * cb);
+} ViaCommandBuffer;
+
+#define VIA_DMASIZE 16384
+
+#define H1_ADDR(val) (((val) >> 2) | 0xF0000000)
+#define WAITFLAGS(flags)			\
+    (cb)->waitFlags |= (flags)
+
+#define BEGIN_RING(size)					\
+    do {								\
+	if (cb->flushFunc && (cb->pos > (cb->bufSize-(size)))) {	\
+	    cb->flushFunc(cb);					\
+	}								\
+    } while(0)
+
+#define BEGIN_H2(paraType, h2size)			\
+  do{							\
+    BEGIN_RING((h2size)+6);				\
+    if (cb->mode == 2 && (paraType) == cb->rindex)	\
+      break;						\
+    if (cb->pos & 1)					\
+      OUT_RING(HC_DUMMY);				\
+    cb->header_start = cb->pos;				\
+    cb->rindex = paraType;				\
+    cb->mode = 2;					\
+    OUT_RING(HALCYON_HEADER2);				\
+    OUT_RING((paraType) << 16);						\
+    if (!cb->has3dState && ((paraType) != HC_ParaType_CmdVdata)) {	\
+      cb->has3dState = TRUE;						\
+    }									\
+  } while(0);
+
+#define OUT_RING(val) do{	\
+	(cb)->buf[(cb)->pos++] = (val);	\
+    } while(0);
+
+#define OUT_RING_QW(val1, val2)			\
+    do {						\
+	(cb)->buf[(cb)->pos++] = (val1);		\
+	(cb)->buf[(cb)->pos++] = (val2);		\
+    } while (0)
+
+#define ADVANCE_RING \
+  cb->flushFunc(cb)
+
+#define RING_VARS \
+  ViaCommandBuffer *cb = &pVia->cb
+
+#define OUT_RING_H1(val1, val2) \
+  OUT_RING_QW(H1_ADDR(val1), val2)
+
+#define OUT_RING_SubA(val1, val2) \
+  OUT_RING(((val1) << HC_SubA_SHIFT) | ((val2) & HC_Para_MASK))
+
+extern int viaSetupCBuffer(ScrnInfoPtr pScrn, ViaCommandBuffer * buf,
+    unsigned size);
+extern void viaTearDownCBuffer(ViaCommandBuffer * buf);
+extern void viaFlushPCI(ViaCommandBuffer * buf);
+
+#endif