X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=lib%2Flmb.c;h=9cee17142b2cdc6d2d7a78c8b6ca5fd6573eb4b8;hb=d7f6de1e9c4a12e11ba7186c70f0f40caa76f590;hp=83287d3869a3d8e52129982f85af166c5b1246fc;hpb=9d88a2eb6e05c07aa0d484b8fa1372722fa921d0;p=safe%2Fjmp%2Flinux-2.6

diff --git a/lib/lmb.c b/lib/lmb.c
index 83287d3..9cee171 100644
--- a/lib/lmb.c
+++ b/lib/lmb.c
@@ -19,31 +19,43 @@
 
 struct lmb lmb;
 
-void lmb_dump_all(void)
+static int lmb_debug;
+
+static int __init early_lmb(char *p)
 {
-#ifdef DEBUG
-	unsigned long i;
+	if (p && strstr(p, "debug"))
+		lmb_debug = 1;
+	return 0;
+}
+early_param("lmb", early_lmb);
 
-	pr_debug("lmb_dump_all:\n");
-	pr_debug("    memory.cnt		  = 0x%lx\n", lmb.memory.cnt);
-	pr_debug("    memory.size		  = 0x%llx\n",
-	    (unsigned long long)lmb.memory.size);
-	for (i=0; i < lmb.memory.cnt ;i++) {
-		pr_debug("    memory.region[0x%x].base       = 0x%llx\n",
-		    i, (unsigned long long)lmb.memory.region[i].base);
-		pr_debug("		      .size     = 0x%llx\n",
-		    (unsigned long long)lmb.memory.region[i].size);
-	}
+static void lmb_dump(struct lmb_region *region, char *name)
+{
+	unsigned long long base, size;
+	int i;
+
+	pr_info(" %s.cnt  = 0x%lx\n", name, region->cnt);
+
+	for (i = 0; i < region->cnt; i++) {
+		base = region->region[i].base;
+		size = region->region[i].size;
 
-	pr_debug("    reserved.cnt	  = 0x%lx\n", lmb.reserved.cnt);
-	pr_debug("    reserved.size	  = 0x%lx\n", lmb.reserved.size);
-	for (i=0; i < lmb.reserved.cnt ;i++) {
-		pr_debug("    reserved.region[0x%x].base       = 0x%llx\n",
-		    i, (unsigned long long)lmb.reserved.region[i].base);
-		pr_debug("		      .size     = 0x%llx\n",
-		    (unsigned long long)lmb.reserved.region[i].size);
+		pr_info(" %s[0x%x]\t0x%016llx - 0x%016llx, 0x%llx bytes\n",
+		    name, i, base, base + size - 1, size);
 	}
-#endif /* DEBUG */
+}
+
+void lmb_dump_all(void)
+{
+	if (!lmb_debug)
+		return;
+
+	pr_info("LMB configuration:\n");
+	pr_info(" rmo_size    = 0x%llx\n", (unsigned long long)lmb.rmo_size);
+	pr_info(" memory.size = 0x%llx\n", (unsigned long long)lmb.memory.size);
+
+	lmb_dump(&lmb.memory, "memory");
+	lmb_dump(&lmb.reserved, "reserved");
 }
 
 static unsigned long lmb_addrs_overlap(u64 base1, u64 size1, u64 base2,
@@ -251,7 +263,7 @@ long __init lmb_reserve(u64 base, u64 size)
 	return lmb_add_region(_rgn, base, size);
 }
 
-long __init lmb_overlaps_region(struct lmb_region *rgn, u64 base, u64 size)
+long lmb_overlaps_region(struct lmb_region *rgn, u64 base, u64 size)
 {
 	unsigned long i;
 
@@ -286,8 +298,7 @@ static u64 __init lmb_alloc_nid_unreserved(u64 start, u64 end,
 		j = lmb_overlaps_region(&lmb.reserved, base, size);
 		if (j < 0) {
 			/* this area isn't reserved, take it */
-			if (lmb_add_region(&lmb.reserved, base,
-					   lmb_align_up(size, align)) < 0)
+			if (lmb_add_region(&lmb.reserved, base, size) < 0)
 				base = ~(u64)0;
 			return base;
 		}
@@ -333,6 +344,10 @@ u64 __init lmb_alloc_nid(u64 size, u64 align, int nid,
 	struct lmb_region *mem = &lmb.memory;
 	int i;
 
+	BUG_ON(0 == size);
+
+	size = lmb_align_up(size, align);
+
 	for (i = 0; i < mem->cnt; i++) {
 		u64 ret = lmb_alloc_nid_region(&mem->region[i],
 					       nid_range,
@@ -370,6 +385,8 @@ u64 __init __lmb_alloc_base(u64 size, u64 align, u64 max_addr)
 
 	BUG_ON(0 == size);
 
+	size = lmb_align_up(size, align);
+
 	/* On some platforms, make sure we allocate lowmem */
 	/* Note that LMB_REAL_LIMIT may be LMB_ALLOC_ANYWHERE */
 	if (max_addr == LMB_ALLOC_ANYWHERE)
@@ -393,8 +410,7 @@ u64 __init __lmb_alloc_base(u64 size, u64 align, u64 max_addr)
 			j = lmb_overlaps_region(&lmb.reserved, base, size);
 			if (j < 0) {
 				/* this area isn't reserved, take it */
-				if (lmb_add_region(&lmb.reserved, base,
-						   lmb_align_up(size, align)) < 0)
+				if (lmb_add_region(&lmb.reserved, base, size) < 0)
 					return 0;
 				return base;
 			}
@@ -413,7 +429,7 @@ u64 __init lmb_phys_mem_size(void)
 	return lmb.memory.size;
 }
 
-u64 __init lmb_end_of_DRAM(void)
+u64 lmb_end_of_DRAM(void)
 {
 	int idx = lmb.memory.cnt - 1;
 
@@ -446,6 +462,8 @@ void __init lmb_enforce_memory_limit(u64 memory_limit)
 	if (lmb.memory.region[0].size < lmb.rmo_size)
 		lmb.rmo_size = lmb.memory.region[0].size;
 
+	memory_limit = lmb_end_of_DRAM();
+
 	/* And truncate any reserves above the limit also. */
 	for (i = 0; i < lmb.reserved.cnt; i++) {
 		p = &lmb.reserved.region[i];
@@ -475,6 +493,11 @@ int __init lmb_is_reserved(u64 addr)
 	return 0;
 }
 
+int lmb_is_region_reserved(u64 base, u64 size)
+{
+	return lmb_overlaps_region(&lmb.reserved, base, size);
+}
+
 /*
  * Given a <base, len>, find which memory regions belong to this range.
  * Adjust the request and return a contiguous chunk.