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

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

1 files changed, 0 insertions, 357 deletions

diff --git a/arch/powerpc/mm/lmb.c b/arch/powerpc/mm/lmb.c
deleted file mode 100644
index 4ce23bcf8a5..00000000000
--- a/arch/powerpc/mm/lmb.c
+++ /dev/null
@@ -1,357 +0,0 @@
-/*
- * Procedures for maintaining information about logical memory blocks.
- *
- * Peter Bergner, IBM Corp.	June 2001.
- * Copyright (C) 2001 Peter Bergner.
- * 
- *      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/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
-
-#undef DEBUG
-
-#ifdef DEBUG
-#include <asm/udbg.h>
-#define DBG(fmt...) udbg_printf(fmt)
-#else
-#define DBG(fmt...)
-#endif
-
-#define LMB_ALLOC_ANYWHERE	0
-
-struct lmb lmb;
-
-void lmb_dump_all(void)
-{
-#ifdef DEBUG
-	unsigned long i;
-
-	DBG("lmb_dump_all:\n");
-	DBG("    memory.cnt		  = 0x%lx\n", lmb.memory.cnt);
-	DBG("    memory.size		  = 0x%lx\n", lmb.memory.size);
-	for (i=0; i < lmb.memory.cnt ;i++) {
-		DBG("    memory.region[0x%x].base       = 0x%lx\n",
-			    i, lmb.memory.region[i].base);
-		DBG("		      .size     = 0x%lx\n",
-			    lmb.memory.region[i].size);
-	}
-
-	DBG("\n    reserved.cnt	  = 0x%lx\n", lmb.reserved.cnt);
-	DBG("    reserved.size	  = 0x%lx\n", lmb.reserved.size);
-	for (i=0; i < lmb.reserved.cnt ;i++) {
-		DBG("    reserved.region[0x%x].base       = 0x%lx\n",
-			    i, lmb.reserved.region[i].base);
-		DBG("		      .size     = 0x%lx\n",
-			    lmb.reserved.region[i].size);
-	}
-#endif /* DEBUG */
-}
-
-static unsigned long __init lmb_addrs_overlap(unsigned long base1,
-		unsigned long size1, unsigned long base2, unsigned long size2)
-{
-	return ((base1 < (base2+size2)) && (base2 < (base1+size1)));
-}
-
-static long __init 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 long __init 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 base2 = rgn->region[r2].base;
-	unsigned long size2 = rgn->region[r2].size;
-
-	return lmb_addrs_adjacent(base1, size1, base2, size2);
-}
-
-static void __init lmb_remove_region(struct lmb_region *rgn, unsigned long r)
-{
-	unsigned long i;
-
-	for (i = r; i < rgn->cnt - 1; i++) {
-		rgn->region[i].base = rgn->region[i + 1].base;
-		rgn->region[i].size = rgn->region[i + 1].size;
-	}
-	rgn->cnt--;
-}
-
-/* Assumption: base addr of region 1 < base addr of region 2 */
-static void __init lmb_coalesce_regions(struct lmb_region *rgn,
-		unsigned long r1, unsigned long r2)
-{
-	rgn->region[r1].size += rgn->region[r2].size;
-	lmb_remove_region(rgn, r2);
-}
-
-/* This routine called with relocation disabled. */
-void __init lmb_init(void)
-{
-	/* Create a dummy zero size LMB which will get coalesced away later.
-	 * This simplifies the lmb_add() code below...
-	 */
-	lmb.memory.region[0].base = 0;
-	lmb.memory.region[0].size = 0;
-	lmb.memory.cnt = 1;
-
-	/* Ditto. */
-	lmb.reserved.region[0].base = 0;
-	lmb.reserved.region[0].size = 0;
-	lmb.reserved.cnt = 1;
-}
-
-/* This routine may be called with relocation disabled. */
-void __init lmb_analyze(void)
-{
-	int i;
-
-	lmb.memory.size = 0;
-
-	for (i = 0; i < lmb.memory.cnt; i++)
-		lmb.memory.size += lmb.memory.region[i].size;
-}
-
-/* This routine called with relocation disabled. */
-static long __init lmb_add_region(struct lmb_region *rgn, unsigned long base,
-				  unsigned long size)
-{
-	unsigned long coalesced = 0;
-	long adjacent, i;
-
-	/* First try and coalesce this LMB with another. */
-	for (i=0; i < rgn->cnt; i++) {
-		unsigned long rgnbase = rgn->region[i].base;
-		unsigned long rgnsize = rgn->region[i].size;
-
-		if ((rgnbase == base) && (rgnsize == size))
-			/* Already have this region, so we're done */
-			return 0;
-
-		adjacent = lmb_addrs_adjacent(base,size,rgnbase,rgnsize);
-		if ( adjacent > 0 ) {
-			rgn->region[i].base -= size;
-			rgn->region[i].size += size;
-			coalesced++;
-			break;
-		}
-		else if ( adjacent < 0 ) {
-			rgn->region[i].size += size;
-			coalesced++;
-			break;
-		}
-	}
-
-	if ((i < rgn->cnt-1) && lmb_regions_adjacent(rgn, i, i+1) ) {
-		lmb_coalesce_regions(rgn, i, i+1);
-		coalesced++;
-	}
-
-	if (coalesced)
-		return coalesced;
-	if (rgn->cnt >= MAX_LMB_REGIONS)
-		return -1;
-
-	/* Couldn't coalesce the LMB, so add it to the sorted table. */
-	for (i = rgn->cnt-1; i >= 0; i--) {
-		if (base < rgn->region[i].base) {
-			rgn->region[i+1].base = rgn->region[i].base;
-			rgn->region[i+1].size = rgn->region[i].size;
-		} else {
-			rgn->region[i+1].base = base;
-			rgn->region[i+1].size = size;
-			break;
-		}
-	}
-	rgn->cnt++;
-
-	return 0;
-}
-
-/* This routine may be called with relocation disabled. */
-long __init lmb_add(unsigned long base, unsigned long size)
-{
-	struct lmb_region *_rgn = &(lmb.memory);
-
-	/* On pSeries LPAR systems, the first LMB is our RMO region. */
-	if (base == 0)
-		lmb.rmo_size = size;
-
-	return lmb_add_region(_rgn, base, size);
-
-}
-
-long __init lmb_reserve(unsigned long base, unsigned long size)
-{
-	struct lmb_region *_rgn = &(lmb.reserved);
-
-	BUG_ON(0 == size);
-
-	return lmb_add_region(_rgn, base, size);
-}
-
-long __init lmb_overlaps_region(struct lmb_region *rgn, unsigned long base,
-				unsigned long size)
-{
-	unsigned long i;
-
-	for (i=0; i < rgn->cnt; i++) {
-		unsigned long rgnbase = rgn->region[i].base;
-		unsigned long rgnsize = rgn->region[i].size;
-		if ( lmb_addrs_overlap(base,size,rgnbase,rgnsize) ) {
-			break;
-		}
-	}
-
-	return (i < rgn->cnt) ? i : -1;
-}
-
-unsigned long __init lmb_alloc(unsigned long size, unsigned long align)
-{
-	return lmb_alloc_base(size, align, LMB_ALLOC_ANYWHERE);
-}
-
-unsigned long __init lmb_alloc_base(unsigned long size, unsigned long align,
-				    unsigned long max_addr)
-{
-	unsigned long alloc;
-
-	alloc = __lmb_alloc_base(size, align, max_addr);
-
-	if (alloc == 0)
-		panic("ERROR: Failed to allocate 0x%lx bytes below 0x%lx.\n",
-				size, max_addr);
-
-	return alloc;
-}
-
-unsigned long __init __lmb_alloc_base(unsigned long size, unsigned long align,
-				    unsigned long max_addr)
-{
-	long i, j;
-	unsigned long base = 0;
-
-	BUG_ON(0 == size);
-
-#ifdef CONFIG_PPC32
-	/* On 32-bit, make sure we allocate lowmem */
-	if (max_addr == LMB_ALLOC_ANYWHERE)
-		max_addr = __max_low_memory;
-#endif
-	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);
-		else if (lmbbase < max_addr) {
-			base = min(lmbbase + lmbsize, max_addr);
-			base = _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,
-					   align);
-
-		if ((base != 0) && (lmbbase <= base))
-			break;
-	}
-
-	if (i < 0)
-		return 0;
-
-	lmb_add_region(&lmb.reserved, base, size);
-
-	return base;
-}
-
-/* You must call lmb_analyze() before this. */
-unsigned long __init lmb_phys_mem_size(void)
-{
-	return lmb.memory.size;
-}
-
-unsigned long __init lmb_end_of_DRAM(void)
-{
-	int idx = lmb.memory.cnt - 1;
-
-	return (lmb.memory.region[idx].base + lmb.memory.region[idx].size);
-}
-
-/* You must call lmb_analyze() after this. */
-void __init lmb_enforce_memory_limit(unsigned long memory_limit)
-{
-	unsigned long i, limit;
-	struct lmb_property *p;
-
-	if (! memory_limit)
-		return;
-
-	/* Truncate the lmb regions to satisfy the memory limit. */
-	limit = memory_limit;
-	for (i = 0; i < lmb.memory.cnt; i++) {
-		if (limit > lmb.memory.region[i].size) {
-			limit -= lmb.memory.region[i].size;
-			continue;
-		}
-
-		lmb.memory.region[i].size = limit;
-		lmb.memory.cnt = i + 1;
-		break;
-	}
-
-	if (lmb.memory.region[0].size < lmb.rmo_size)
-		lmb.rmo_size = lmb.memory.region[0].size;
-
-	/* And truncate any reserves above the limit also. */
-	for (i = 0; i < lmb.reserved.cnt; i++) {
-		p = &lmb.reserved.region[i];
-
-		if (p->base > memory_limit)
-			p->size = 0;
-		else if ((p->base + p->size) > memory_limit)
-			p->size = memory_limit - p->base;
-
-		if (p->size == 0) {
-			lmb_remove_region(&lmb.reserved, i);
-			i--;
-		}
-	}
-}
-
-int __init lmb_is_reserved(unsigned long addr)
-{
-	int i;
-
-	for (i = 0; i < lmb.reserved.cnt; i++) {
-		unsigned long upper = lmb.reserved.region[i].base +
-				      lmb.reserved.region[i].size - 1;
-		if ((addr >= lmb.reserved.region[i].base) && (addr <= upper))
-			return 1;
-	}
-	return 0;
-}