patch-2.4.23 linux-2.4.23/drivers/char/drm/via_ds.h

• Lines: 135
• Date: 2003-11-28 10:26:20.000000000 -0800
• Orig file: linux-2.4.22/drivers/char/drm/via_ds.h
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.22/drivers/char/drm/via_ds.h linux-2.4.23/drivers/char/drm/via_ds.h
@@ -0,0 +1,134 @@
+/*
+ * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
+ * Copyright 2001-2003 S3 Graphics, 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
+ * 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
+ * VIA, S3 GRAPHICS, 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.
+ */
+
+#ifndef _via_ds_h_
+#define _via_ds_h_
+
+/* Set Data Structure */
+
+#define SET_SIZE 5000
+
+typedef struct {
+	unsigned int val;
+	int alloc_next, free_next;
+} list_item_t;
+
+typedef struct {
+	int alloc;
+	int free;
+	int trace;
+	list_item_t list[SET_SIZE];
+} set_t;
+
+set_t *via_set_init(void);
+int via_set_add(set_t *set, unsigned int item);
+int via_set_del(set_t *set, unsigned int item);
+int via_set_first(set_t *set, unsigned int *item);
+int via_set_next(set_t *set, unsigned int *item);
+int via_set_destroy(set_t *set);
+
+#endif
+
+
+#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;
+}
+
+static __inline__ void mmMarkReserved(PMemBlock b)
+{
+	b->reserved = 1;
+}
+
+/* 
+ * input: total size in bytes
+ * return: a heap pointer if OK, NULL if error
+ */
+
+memHeap_t *via_mmInit(int ofs, int size);
+
+memHeap_t *via_mmAddRange(memHeap_t *heap, 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  via_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  via_mmFreeMem(PMemBlock b);
+
+/*
+ * Reserve 'size' bytes block start at offset
+ * This is used to prevent allocation of memory already used
+ * by the X server for the front buffer, pixmaps, and cursor
+ * input: size, offset
+ * output: 0 if OK, -1 if error
+ */
+int via_mmReserveMem(memHeap_t *heap, int offset,int size);
+int via_mmFreeReserved(memHeap_t *heap, int offset);
+
+/*
+ * destroy MM
+ */
+void via_mmDestroy(memHeap_t *mmInit);
+
+/* For debuging purpose. */
+void via_mmDumpMemInfo(memHeap_t *mmInit);
+
+#endif