drm: Add via unichrome support

Add DRM device driver for VIA Unichrome chipsets

From: Unichrome Project http://unichrome.sf.net, Erdi Chen, Thomas Hellstrom    Signed-off-by: Dave Airlie <airlied@linux.ie>

1 files changed, 104 insertions, 0 deletions

diff --git a/drivers/char/drm/via_ds.h b/drivers/char/drm/via_ds.h
new file mode 100644
index 00000000000..be9c7f9f1ae
--- /dev/null
+++ b/drivers/char/drm/via_ds.h
@@ -0,0 +1,104 @@
+/*
+ * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
+ * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
+ * Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
+ * 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_
+
+#include "drmP.h"
+
+/* Set Data Structure */
+#define SET_SIZE 5000
+typedef unsigned long ITEM_TYPE;
+
+typedef struct {
+	ITEM_TYPE 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_setInit(void);
+int via_setAdd(set_t * set, ITEM_TYPE item);
+int via_setDel(set_t * set, ITEM_TYPE item);
+int via_setFirst(set_t * set, ITEM_TYPE * item);
+int via_setNext(set_t * set, ITEM_TYPE * item);
+int via_setDestroy(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);
+
+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);
+
+#endif