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authorDavid S. Miller <davem@davemloft.net>2008-02-14 03:56:49 +0300
committerDavid S. Miller <davem@davemloft.net>2008-02-14 03:56:49 +0300
commitd9b2b2a277219d4812311d995054ce4f95067725 (patch)
tree63af21df6686dd2e867015fdf9f0cb798d3ca348 /include/linux/lmb.h
parente760e716d47b48caf98da348368fd41b4a9b9e7e (diff)
downloadlinux-d9b2b2a277219d4812311d995054ce4f95067725.tar.xz
[LIB]: Make PowerPC LMB code generic so sparc64 can use it too.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/lmb.h')
-rw-r--r--include/linux/lmb.h83
1 files changed, 83 insertions, 0 deletions
diff --git a/include/linux/lmb.h b/include/linux/lmb.h
new file mode 100644
index 000000000000..8b93f63407e9
--- /dev/null
+++ b/include/linux/lmb.h
@@ -0,0 +1,83 @@
+#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 {
+ unsigned long base;
+ unsigned long size;
+};
+
+struct lmb_region {
+ unsigned long cnt;
+ unsigned long size;
+ struct lmb_property region[MAX_LMB_REGIONS+1];
+};
+
+struct lmb {
+ unsigned long debug;
+ unsigned long 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 __init lmb_add(unsigned long base, unsigned long size);
+extern long __init lmb_reserve(unsigned long base, unsigned long size);
+extern unsigned long __init lmb_alloc(unsigned long size, unsigned long align);
+extern unsigned long __init lmb_alloc_base(unsigned long size,
+ unsigned long align, unsigned long max_addr);
+extern unsigned long __init __lmb_alloc_base(unsigned long size,
+ unsigned long align, unsigned long max_addr);
+extern unsigned long __init lmb_phys_mem_size(void);
+extern unsigned long __init lmb_end_of_DRAM(void);
+extern void __init lmb_enforce_memory_limit(unsigned long memory_limit);
+extern int __init lmb_is_reserved(unsigned long addr);
+
+extern void lmb_dump_all(void);
+
+static inline unsigned long
+lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
+{
+ return type->region[region_nr].size;
+}
+static inline unsigned long
+lmb_size_pages(struct lmb_region *type, unsigned long region_nr)
+{
+ return lmb_size_bytes(type, region_nr) >> PAGE_SHIFT;
+}
+static inline unsigned long
+lmb_start_pfn(struct lmb_region *type, unsigned long region_nr)
+{
+ return type->region[region_nr].base >> PAGE_SHIFT;
+}
+static inline unsigned long
+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 */