1 files changed, 87 insertions, 0 deletions
diff --git a/include/linux/lmb.h b/include/linux/lmb.h
new file mode 100644
index 00000000000..c46c89505da
--- /dev/null
+++ b/include/linux/lmb.h
@@ -0,0 +1,87 @@
+#ifndef _LINUX_LMB_H
+#define _LINUX_LMB_H
+#ifdef __KERNEL__
+
+/*
+ * Logical memory blocks.
+ *
+ * Copyright (C) 2001 Peter Bergner, IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/mm.h>
+
+#define MAX_LMB_REGIONS 128
+
+struct lmb_property {
+	u64 base;
+	u64 size;
+};
+
+struct lmb_region {
+	unsigned long cnt;
+	u64 size;
+	struct lmb_property region[MAX_LMB_REGIONS+1];
+};
+
+struct lmb {
+	unsigned long debug;
+	u64 rmo_size;
+	struct lmb_region memory;
+	struct lmb_region reserved;
+};
+
+extern struct lmb lmb;
+
+extern void __init lmb_init(void);
+extern void __init lmb_analyze(void);
+extern long lmb_add(u64 base, u64 size);
+extern long lmb_remove(u64 base, u64 size);
+extern long __init lmb_reserve(u64 base, u64 size);
+extern u64 __init lmb_alloc_nid(u64 size, u64 align, int nid,
+				u64 (*nid_range)(u64, u64, int *));
+extern u64 __init lmb_alloc(u64 size, u64 align);
+extern u64 __init lmb_alloc_base(u64 size,
+		u64, u64 max_addr);
+extern u64 __init __lmb_alloc_base(u64 size,
+		u64 align, u64 max_addr);
+extern u64 __init lmb_phys_mem_size(void);
+extern u64 __init lmb_end_of_DRAM(void);
+extern void __init lmb_enforce_memory_limit(u64 memory_limit);
+extern int __init lmb_is_reserved(u64 addr);
+extern int lmb_find(struct lmb_property *res);
+
+extern void lmb_dump_all(void);
+
+static inline u64
+lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
+{
+	return type->region[region_nr].size;
+}
+static inline u64
+lmb_size_pages(struct lmb_region *type, unsigned long region_nr)
+{
+	return lmb_size_bytes(type, region_nr) >> PAGE_SHIFT;
+}
+static inline u64
+lmb_start_pfn(struct lmb_region *type, unsigned long region_nr)
+{
+	return type->region[region_nr].base >> PAGE_SHIFT;
+}
+static inline u64
+lmb_end_pfn(struct lmb_region *type, unsigned long region_nr)
+{
+	return lmb_start_pfn(type, region_nr) +
+	       lmb_size_pages(type, region_nr);
+}
+
+#include <asm/lmb.h>
+
+#endif /* __KERNEL__ */
+
+#endif /* _LINUX_LMB_H */