Open source GPL/LGPL release

drivers/gpu/nvgpu/gk20a/bitmap_allocator_priv.h

@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2016, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef BITMAP_ALLOCATOR_PRIV_H
+#define BITMAP_ALLOCATOR_PRIV_H
+
+#include <linux/rbtree.h>
+
+struct gk20a_allocator;
+
+struct gk20a_bitmap_allocator {
+	struct gk20a_allocator *owner;
+
+	u64 base;			/* Base address of the space. */
+	u64 length;			/* Length of the space. */
+	u64 blk_size;			/* Size that corresponds to 1 bit. */
+	u64 blk_shift;			/* Bit shift to divide by blk_size. */
+	u64 num_bits;			/* Number of allocatable bits. */
+	u64 bit_offs;			/* Offset of bitmap. */
+
+	unsigned long *bitmap;		/* The actual bitmap! */
+	struct rb_root allocs;		/* Tree of outstanding allocations. */
+
+	u64 flags;
+
+	bool inited;
+
+	/* Statistics */
+	u64 nr_allocs;
+	u64 nr_fixed_allocs;
+	u64 bytes_alloced;
+	u64 bytes_freed;
+};
+
+struct gk20a_bitmap_alloc {
+	u64 base;
+	u64 length;
+	struct rb_node alloc_entry;	/* RB tree of allocations. */
+};
+
+static inline struct gk20a_bitmap_allocator *bitmap_allocator(
+	struct gk20a_allocator *a)
+{
+	return (struct gk20a_bitmap_allocator *)(a)->priv;
+}
+
+
+#endif