[LIB]: Make PowerPC LMB code generic so sparc64 can use it too.

Signed-off-by: David S. Miller <davem@davemloft.net>

arch/powerpc/Kconfig

@@ -90,6 +90,7 @@ config PPC
 	select HAVE_IDE
 	select HAVE_OPROFILE
 	select HAVE_KPROBES
+	select HAVE_LMB
 
 config EARLY_PRINTK
 	bool

arch/powerpc/kernel/btext.c

@@ -7,6 +7,7 @@
 #include <linux/string.h>
 #include <linux/init.h>
 #include <linux/module.h>
+#include <linux/lmb.h>
 
 #include <asm/sections.h>
 #include <asm/prom.h>
@@ -15,7 +16,7 @@
 #include <asm/mmu.h>
 #include <asm/pgtable.h>
 #include <asm/io.h>
-#include <asm/lmb.h>
+#include <asm/prom.h>
 #include <asm/processor.h>
 #include <asm/udbg.h>
 

arch/powerpc/kernel/crash.c

@@ -24,12 +24,13 @@
 #include <linux/init.h>
 #include <linux/irq.h>
 #include <linux/types.h>
+#include <linux/lmb.h>
 
 #include <asm/processor.h>
 #include <asm/machdep.h>
 #include <asm/kexec.h>
 #include <asm/kdump.h>
-#include <asm/lmb.h>
+#include <asm/prom.h>
 #include <asm/firmware.h>
 #include <asm/smp.h>
 #include <asm/system.h>

arch/powerpc/kernel/crash_dump.c

@@ -13,8 +13,9 @@
 
 #include <linux/crash_dump.h>
 #include <linux/bootmem.h>
+#include <linux/lmb.h>
 #include <asm/kdump.h>
-#include <asm/lmb.h>
+#include <asm/prom.h>
 #include <asm/firmware.h>
 #include <asm/uaccess.h>
 

arch/powerpc/kernel/machine_kexec.c

@@ -12,8 +12,9 @@
 #include <linux/kexec.h>
 #include <linux/reboot.h>
 #include <linux/threads.h>
+#include <linux/lmb.h>
 #include <asm/machdep.h>
-#include <asm/lmb.h>
+#include <asm/prom.h>
 
 void machine_crash_shutdown(struct pt_regs *regs)
 {

arch/powerpc/kernel/prom.c

@@ -31,10 +31,10 @@
 #include <linux/kexec.h>
 #include <linux/debugfs.h>
 #include <linux/irq.h>
+#include <linux/lmb.h>
 
 #include <asm/prom.h>
 #include <asm/rtas.h>
-#include <asm/lmb.h>
 #include <asm/page.h>
 #include <asm/processor.h>
 #include <asm/irq.h>

arch/powerpc/kernel/rtas.c

@@ -22,6 +22,7 @@
 #include <linux/smp.h>
 #include <linux/completion.h>
 #include <linux/cpumask.h>
+#include <linux/lmb.h>
 
 #include <asm/prom.h>
 #include <asm/rtas.h>
@@ -34,7 +35,6 @@
 #include <asm/system.h>
 #include <asm/delay.h>
 #include <asm/uaccess.h>
-#include <asm/lmb.h>
 #include <asm/udbg.h>
 #include <asm/syscalls.h>
 #include <asm/smp.h>

arch/powerpc/kernel/setup-common.c

@@ -34,6 +34,7 @@
 #include <linux/serial_8250.h>
 #include <linux/debugfs.h>
 #include <linux/percpu.h>
+#include <linux/lmb.h>
 #include <asm/io.h>
 #include <asm/prom.h>
 #include <asm/processor.h>
@@ -56,7 +57,6 @@
 #include <asm/cache.h>
 #include <asm/page.h>
 #include <asm/mmu.h>
-#include <asm/lmb.h>
 #include <asm/xmon.h>
 #include <asm/cputhreads.h>
 

arch/powerpc/kernel/setup_64.c

@@ -33,6 +33,7 @@
 #include <linux/serial_8250.h>
 #include <linux/bootmem.h>
 #include <linux/pci.h>
+#include <linux/lmb.h>
 #include <asm/io.h>
 #include <asm/kdump.h>
 #include <asm/prom.h>
@@ -55,7 +56,6 @@
 #include <asm/cache.h>
 #include <asm/page.h>
 #include <asm/mmu.h>
-#include <asm/lmb.h>
 #include <asm/firmware.h>
 #include <asm/xmon.h>
 #include <asm/udbg.h>

arch/powerpc/kernel/vdso.c

@@ -21,13 +21,14 @@
 #include <linux/elf.h>
 #include <linux/security.h>
 #include <linux/bootmem.h>
+#include <linux/lmb.h>
 
 #include <asm/pgtable.h>
 #include <asm/system.h>
 #include <asm/processor.h>
 #include <asm/mmu.h>
 #include <asm/mmu_context.h>
-#include <asm/lmb.h>
+#include <asm/prom.h>
 #include <asm/machdep.h>
 #include <asm/cputable.h>
 #include <asm/sections.h>

arch/powerpc/mm/Makefile

@@ -6,7 +6,7 @@ ifeq ($(CONFIG_PPC64),y)
 EXTRA_CFLAGS	+= -mno-minimal-toc
 endif
 
-obj-y				:= fault.o mem.o lmb.o \
+obj-y				:= fault.o mem.o \
 				   init_$(CONFIG_WORD_SIZE).o \
 				   pgtable_$(CONFIG_WORD_SIZE).o \
 				   mmu_context_$(CONFIG_WORD_SIZE).o

arch/powerpc/mm/hash_utils_64.c

@@ -31,6 +31,7 @@
 #include <linux/cache.h>
 #include <linux/init.h>
 #include <linux/signal.h>
+#include <linux/lmb.h>
 
 #include <asm/processor.h>
 #include <asm/pgtable.h>
@@ -41,7 +42,7 @@
 #include <asm/system.h>
 #include <asm/uaccess.h>
 #include <asm/machdep.h>
-#include <asm/lmb.h>
+#include <asm/prom.h>
 #include <asm/abs_addr.h>
 #include <asm/tlbflush.h>
 #include <asm/io.h>

arch/powerpc/mm/init_32.c

@@ -30,6 +30,7 @@
 #include <linux/highmem.h>
 #include <linux/initrd.h>
 #include <linux/pagemap.h>
+#include <linux/lmb.h>
 
 #include <asm/pgalloc.h>
 #include <asm/prom.h>
@@ -41,7 +42,6 @@
 #include <asm/machdep.h>
 #include <asm/btext.h>
 #include <asm/tlb.h>
-#include <asm/lmb.h>
 #include <asm/sections.h>
 
 #include "mmu_decl.h"

arch/powerpc/mm/init_64.c

@@ -38,11 +38,11 @@
 #include <linux/nodemask.h>
 #include <linux/module.h>
 #include <linux/poison.h>
+#include <linux/lmb.h>
 
 #include <asm/pgalloc.h>
 #include <asm/page.h>
 #include <asm/prom.h>
-#include <asm/lmb.h>
 #include <asm/rtas.h>
 #include <asm/io.h>
 #include <asm/mmu_context.h>

arch/powerpc/mm/mem.c

@@ -31,6 +31,7 @@
 #include <linux/initrd.h>
 #include <linux/pagemap.h>
 #include <linux/suspend.h>
+#include <linux/lmb.h>
 
 #include <asm/pgalloc.h>
 #include <asm/prom.h>
@@ -42,7 +43,6 @@
 #include <asm/machdep.h>
 #include <asm/btext.h>
 #include <asm/tlb.h>
-#include <asm/lmb.h>
 #include <asm/sections.h>
 #include <asm/vdso.h>
 

arch/powerpc/mm/numa.c

@@ -17,8 +17,9 @@
 #include <linux/nodemask.h>
 #include <linux/cpu.h>
 #include <linux/notifier.h>
+#include <linux/lmb.h>
 #include <asm/sparsemem.h>
-#include <asm/lmb.h>
+#include <asm/prom.h>
 #include <asm/system.h>
 #include <asm/smp.h>
 

arch/powerpc/mm/ppc_mmu_32.c

@@ -26,11 +26,11 @@
 #include <linux/mm.h>
 #include <linux/init.h>
 #include <linux/highmem.h>
+#include <linux/lmb.h>
 
 #include <asm/prom.h>
 #include <asm/mmu.h>
 #include <asm/machdep.h>
-#include <asm/lmb.h>
 
 #include "mmu_decl.h"
 

arch/powerpc/mm/stab.c

@@ -12,12 +12,14 @@
  *      2 of the License, or (at your option) any later version.
  */
 
+#include <linux/lmb.h>
+
 #include <asm/pgtable.h>
 #include <asm/mmu.h>
 #include <asm/mmu_context.h>
 #include <asm/paca.h>
 #include <asm/cputable.h>
-#include <asm/lmb.h>
+#include <asm/prom.h>
 #include <asm/abs_addr.h>
 #include <asm/firmware.h>
 #include <asm/iseries/hv_call.h>

arch/powerpc/platforms/cell/iommu.c

@@ -28,13 +28,13 @@
 #include <linux/notifier.h>
 #include <linux/of.h>
 #include <linux/of_platform.h>
+#include <linux/lmb.h>
 
 #include <asm/prom.h>
 #include <asm/iommu.h>
 #include <asm/machdep.h>
 #include <asm/pci-bridge.h>
 #include <asm/udbg.h>
-#include <asm/lmb.h>
 #include <asm/firmware.h>
 #include <asm/cell-regs.h>
 

arch/powerpc/platforms/maple/setup.c

@@ -43,6 +43,7 @@
 #include <linux/smp.h>
 #include <linux/bitops.h>
 #include <linux/of_device.h>
+#include <linux/lmb.h>
 
 #include <asm/processor.h>
 #include <asm/sections.h>
@@ -57,7 +58,6 @@
 #include <asm/dma.h>
 #include <asm/cputable.h>
 #include <asm/time.h>
-#include <asm/lmb.h>
 #include <asm/mpic.h>
 #include <asm/rtas.h>
 #include <asm/udbg.h>

arch/powerpc/platforms/powermac/setup.c

@@ -53,6 +53,7 @@
 #include <linux/suspend.h>
 #include <linux/of_device.h>
 #include <linux/of_platform.h>
+#include <linux/lmb.h>
 
 #include <asm/reg.h>
 #include <asm/sections.h>
@@ -74,7 +75,6 @@
 #include <asm/iommu.h>
 #include <asm/smu.h>
 #include <asm/pmc.h>
-#include <asm/lmb.h>
 #include <asm/udbg.h>
 
 #include "pmac.h"

arch/powerpc/platforms/ps3/htab.c

@@ -19,9 +19,10 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/lmb.h>
 
 #include <asm/machdep.h>
-#include <asm/lmb.h>
+#include <asm/prom.h>
 #include <asm/udbg.h>
 #include <asm/lv1call.h>
 #include <asm/ps3fb.h>

arch/powerpc/platforms/ps3/mm.c

@@ -21,9 +21,10 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/memory_hotplug.h>
+#include <linux/lmb.h>
 
 #include <asm/firmware.h>
-#include <asm/lmb.h>
+#include <asm/prom.h>
 #include <asm/udbg.h>
 #include <asm/lv1call.h>
 

arch/powerpc/platforms/ps3/os-area.c

@@ -24,8 +24,9 @@
 #include <linux/fs.h>
 #include <linux/syscalls.h>
 #include <linux/ctype.h>
+#include <linux/lmb.h>
 
-#include <asm/lmb.h>
+#include <asm/prom.h>
 
 #include "platform.h"
 

arch/powerpc/sysdev/dart_iommu.c

@@ -37,6 +37,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/vmalloc.h>
 #include <linux/suspend.h>
+#include <linux/lmb.h>
 #include <asm/io.h>
 #include <asm/prom.h>
 #include <asm/iommu.h>
@@ -44,7 +45,6 @@
 #include <asm/machdep.h>
 #include <asm/abs_addr.h>
 #include <asm/cacheflush.h>
-#include <asm/lmb.h>
 #include <asm/ppc-pci.h>
 
 #include "dart.h"

arch/sparc64/Kconfig

@@ -15,6 +15,7 @@ config SPARC64
 	bool
 	default y
 	select HAVE_IDE
+	select HAVE_LMB
 	help
 	  SPARC is a family of RISC microprocessors designed and marketed by
 	  Sun Microsystems, incorporated.  This port covers the newer 64-bit

include/asm-powerpc/abs_addr.h

@@ -12,10 +12,11 @@
  * 2 of the License, or (at your option) any later version.
  */
 
+#include <linux/lmb.h>
+
 #include <asm/types.h>
 #include <asm/page.h>
 #include <asm/prom.h>
-#include <asm/lmb.h>
 #include <asm/firmware.h>
 
 struct mschunks_map {

include/asm-powerpc/lmb.h

 #ifndef _ASM_POWERPC_LMB_H
 #define _ASM_POWERPC_LMB_H
-#ifdef __KERNEL__
 
-/*
- * 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/udbg.h>
 
-#include <linux/init.h>
-#include <asm/prom.h>
+#define LMB_DBG(fmt...) udbg_printf(fmt)
 
-#define MAX_LMB_REGIONS 128
+#ifdef CONFIG_PPC32
+extern unsigned long __max_low_memory;
+#define LMB_REAL_LIMIT	__max_low_memory
+#else
+#define LMB_REAL_LIMIT	0
+#endif
 
-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);
-}
-
-#endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_LMB_H */

include/asm-sparc64/lmb.h

+#ifndef _SPARC64_LMB_H
+#define _SPARC64_LMB_H
+
+#include <asm/oplib.h>
+
+#define LMB_DBG(fmt...) prom_printf(fmt)
+
+#define LMB_REAL_LIMIT	0
+
+#endif /* !(_SPARC64_LMB_H) */

include/linux/lmb.h

+#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 */

lib/Kconfig

@@ -141,4 +141,7 @@ config HAS_DMA
 config CHECK_SIGNATURE
 	bool
 
+config HAVE_LMB
+	boolean
+
 endmenu

lib/Makefile

@@ -70,6 +70,8 @@ obj-$(CONFIG_FAULT_INJECTION) += fault-inject.o
 
 lib-$(CONFIG_GENERIC_BUG) += bug.o
 
+obj-$(CONFIG_HAVE_LMB) += lmb.o
+
 hostprogs-y	:= gen_crc32table
 clean-files	:= crc32table.h
 

arch/powerpc/mm/lmb.c → lib/lmb.c

@@ -13,19 +13,12 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/bitops.h>
-#include <asm/types.h>
-#include <asm/page.h>
-#include <asm/prom.h>
-#include <asm/lmb.h>
-#ifdef CONFIG_PPC32
-#include "mmu_decl.h"		/* for __max_low_memory */
-#endif
+#include <linux/lmb.h>
 
 #undef DEBUG
 
 #ifdef DEBUG
-#include <asm/udbg.h>
-#define DBG(fmt...) udbg_printf(fmt)
+#define DBG(fmt...) LMB_DBG(fmt)
 #else
 #define DBG(fmt...)
 #endif
@@ -247,6 +240,11 @@ unsigned long __init lmb_alloc_base(unsigned long size, unsigned long align,
 	return alloc;
 }
 
+static unsigned long lmb_align_down(unsigned long addr, unsigned long size)
+{
+	return addr & ~(size - 1);
+}
+
 unsigned long __init __lmb_alloc_base(unsigned long size, unsigned long align,
 				    unsigned long max_addr)
 {
@@ -255,26 +253,25 @@ unsigned long __init __lmb_alloc_base(unsigned long size, unsigned long align,
 
 	BUG_ON(0 == size);
 
-#ifdef CONFIG_PPC32
-	/* On 32-bit, make sure we allocate lowmem */
+	/* On some platforms, make sure we allocate lowmem */
 	if (max_addr == LMB_ALLOC_ANYWHERE)
-		max_addr = __max_low_memory;
-#endif
+		max_addr = LMB_REAL_LIMIT;
+
 	for (i = lmb.memory.cnt-1; i >= 0; i--) {
 		unsigned long lmbbase = lmb.memory.region[i].base;
 		unsigned long lmbsize = lmb.memory.region[i].size;
 
 		if (max_addr == LMB_ALLOC_ANYWHERE)
-			base = _ALIGN_DOWN(lmbbase + lmbsize - size, align);
+			base = lmb_align_down(lmbbase + lmbsize - size, align);
 		else if (lmbbase < max_addr) {
 			base = min(lmbbase + lmbsize, max_addr);
-			base = _ALIGN_DOWN(base - size, align);
+			base = lmb_align_down(base - size, align);
 		} else
 			continue;
 
 		while ((lmbbase <= base) &&
 		       ((j = lmb_overlaps_region(&lmb.reserved, base, size)) >= 0) )
-			base = _ALIGN_DOWN(lmb.reserved.region[j].base - size,
+			base = lmb_align_down(lmb.reserved.region[j].base - size,
 					      align);
 
 		if ((base != 0) && (lmbbase <= base))