patch-2.4.19 linux-2.4.19/include/asm-ppc64/lmb.h

• Lines: 110
• Date: Fri Aug 2 17:39:45 2002
• Orig file: linux-2.4.18/include/asm-ppc64/lmb.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/include/asm-ppc64/lmb.h linux-2.4.19/include/asm-ppc64/lmb.h
@@ -0,0 +1,109 @@
+#ifndef _PPC64_LMB_H
+#define _PPC64_LMB_H
+
+/*
+ * Definitions for talking to the Open Firmware PROM on
+ * Power Macintosh computers.
+ *
+ * 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 <asm/prom.h>
+
+extern unsigned long reloc_offset(void);
+
+#define MAX_LMB_REGIONS 64
+
+union lmb_reg_property { 
+	struct reg_property32 addr32[MAX_LMB_REGIONS];
+	struct reg_property64 addr64[MAX_LMB_REGIONS];
+};
+
+#define LMB_MEMORY_AREA	1
+#define LMB_IO_AREA	2
+
+struct lmb_property {
+	unsigned long base;
+	unsigned long physbase;
+	unsigned long size;
+	unsigned long type;
+};
+
+struct lmb_region {
+	unsigned long cnt;
+	unsigned long size;
+	unsigned long iosize;
+	unsigned long lcd_size;		/* Least Common Denominator */
+	struct lmb_property region[MAX_LMB_REGIONS+1];
+};
+
+struct lmb {
+	unsigned long debug;
+	struct lmb_region memory;
+	struct lmb_region reserved;
+};
+
+extern struct lmb lmb;
+
+extern void lmb_init(void);
+extern void lmb_analyze(void);
+extern long lmb_add(unsigned long, unsigned long);
+#ifdef CONFIG_MSCHUNKS
+extern long lmb_add_io(unsigned long base, unsigned long size);
+#endif /* CONFIG_MSCHUNKS */
+extern long lmb_reserve(unsigned long, unsigned long);
+extern unsigned long lmb_alloc(unsigned long, unsigned long);
+extern unsigned long lmb_phys_mem_size(void);
+extern unsigned long lmb_end_of_DRAM(void);
+extern unsigned long lmb_abs_to_phys(unsigned long);
+extern void lmb_dump(char *);
+
+static inline unsigned long
+lmb_addrs_overlap(unsigned long base1, unsigned long size1,
+                  unsigned long base2, unsigned long size2)
+{
+        return ((base1 < (base2+size2)) && (base2 < (base1+size1)));
+}
+
+static inline long
+lmb_regions_overlap(struct lmb_region *rgn, unsigned long r1, unsigned long r2)
+{
+	unsigned long base1 = rgn->region[r1].base;
+        unsigned long size1 = rgn->region[r1].size;
+	unsigned long base2 = rgn->region[r2].base;
+        unsigned long size2 = rgn->region[r2].size;
+
+	return lmb_addrs_overlap(base1,size1,base2,size2);
+}
+
+static inline long
+lmb_addrs_adjacent(unsigned long base1, unsigned long size1,
+		   unsigned long base2, unsigned long size2)
+{
+	if ( base2 == base1 + size1 ) {
+		return 1;
+	} else if ( base1 == base2 + size2 ) {
+		return -1;
+	}
+	return 0;
+}
+
+static inline long
+lmb_regions_adjacent(struct lmb_region *rgn, unsigned long r1, unsigned long r2)
+{
+	unsigned long base1 = rgn->region[r1].base;
+        unsigned long size1 = rgn->region[r1].size;
+        unsigned long type1 = rgn->region[r1].type;
+	unsigned long base2 = rgn->region[r2].base;
+        unsigned long size2 = rgn->region[r2].size;
+        unsigned long type2 = rgn->region[r2].type;
+
+	return (type1 == type2) && lmb_addrs_adjacent(base1,size1,base2,size2);
+}
+
+#endif /* _PPC64_LMB_H */