From 93a458840c77b784fb74738f734ba2c5d22ca7a7 Mon Sep 17 00:00:00 2001
From: Keith Whitwell <keith@tungstengraphics.com>
Date: Wed, 6 Aug 2003 18:12:22 +0000
Subject: Shared dri driver resources

---
 src/mesa/drivers/dri/common/mm.h | 82 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 src/mesa/drivers/dri/common/mm.h

(limited to 'src/mesa/drivers/dri/common/mm.h')

diff --git a/src/mesa/drivers/dri/common/mm.h b/src/mesa/drivers/dri/common/mm.h
new file mode 100644
index 0000000000..d52871d39f
--- /dev/null
+++ b/src/mesa/drivers/dri/common/mm.h
@@ -0,0 +1,82 @@
+/*
+ * GLX Hardware Device Driver common code
+ * Copyright (C) 1999 Keith Whitwell
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * KEITH WHITWELL, OR ANY OTHER CONTRIBUTORS 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 MM_INC
+#define MM_INC
+
+struct mem_block_t {
+  struct mem_block_t *next;
+  struct mem_block_t *heap;
+  int ofs,size;
+  int align;
+  int free:1;
+  int reserved:1;
+};
+typedef struct mem_block_t TMemBlock;
+typedef struct mem_block_t *PMemBlock;
+
+/* a heap is just the first block in a chain */
+typedef struct mem_block_t memHeap_t;
+
+static __inline__ int mmBlockSize(PMemBlock b)
+{ return b->size; }
+
+static __inline__ int mmOffset(PMemBlock b)
+{ return b->ofs; }
+
+/* 
+ * input: total size in bytes
+ * return: a heap pointer if OK, NULL if error
+ */
+memHeap_t *mmInit( int ofs, int size );
+
+/*
+ * Allocate 'size' bytes with 2^align2 bytes alignment,
+ * restrict the search to free memory after 'startSearch'
+ * depth and back buffers should be in different 4mb banks
+ * to get better page hits if possible
+ * input:	size = size of block
+ *       	align2 = 2^align2 bytes alignment
+ *		startSearch = linear offset from start of heap to begin search
+ * return: pointer to the allocated block, 0 if error
+ */
+PMemBlock  mmAllocMem( memHeap_t *heap, int size, int align2, 
+		       int startSearch );
+
+/*
+ * Free block starts at offset
+ * input: pointer to a block
+ * return: 0 if OK, -1 if error
+ */
+int  mmFreeMem( PMemBlock b );
+
+/*
+ * destroy MM
+ */
+void mmDestroy( memHeap_t *mmInit );
+
+/* For debuging purpose. */
+void mmDumpMemInfo( memHeap_t *mmInit );
+
+#endif
-- 
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