/*
* GLX Hardware Device Driver common code
- * Copyright (C) 1999 Keith Whitwell
+ * Copyright (C) 1999 Wittawat Yamwong
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* 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;
- unsigned int free:1;
- unsigned int reserved:1;
-};
-typedef struct mem_block_t TMemBlock;
-typedef struct mem_block_t *PMemBlock;
+/**
+ * Memory manager code. Primarily used by device drivers to manage texture
+ * heaps, etc.
+ */
+
+
+#ifndef MM_H
+#define MM_H
+
-/* a heap is just the first block in a chain */
-typedef struct mem_block_t memHeap_t;
+struct mem_block {
+ struct mem_block *next, *prev;
+ struct mem_block *next_free, *prev_free;
+ struct mem_block *heap;
+ unsigned ofs;
+ unsigned size;
+ unsigned free:1;
+ unsigned reserved:1;
+};
-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 );
+extern struct mem_block *mmInit(unsigned ofs, unsigned 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
* 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 );
+extern struct mem_block *mmAllocMem(struct mem_block *heap, unsigned size,
+ unsigned align2, unsigned startSearch);
-/*
+/**
* Free block starts at offset
* input: pointer to a block
* return: 0 if OK, -1 if error
*/
-int mmFreeMem( PMemBlock b );
+extern int mmFreeMem(struct mem_block *b);
-/*
+/**
* Free block starts at offset
* input: pointer to a heap, start offset
* return: pointer to a block
*/
-PMemBlock mmFindBlock( memHeap_t *heap, int start);
+extern struct mem_block *mmFindBlock(struct mem_block *heap, unsigned start);
-/*
+/**
* destroy MM
*/
-void mmDestroy( memHeap_t *mmInit );
+extern void mmDestroy(struct mem_block *mmInit);
-/* For debuging purpose. */
-void mmDumpMemInfo( memHeap_t *mmInit );
+/**
+ * For debuging purpose.
+ */
+extern void mmDumpMemInfo(const struct mem_block *mmInit);
#endif