[PATCH 3/4] powerpc/64s: Move SLB init into hash_utils_64.c

[Michael Ellerman]

The SLB initialisation code is spread around a bit between prom.c and
hash_utils_64.c. Consolidate it all in hash_utils_64.c.

This slightly changes the timing of when mmu_slb_size is initialised,
but that should have no effect.

Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
---
 arch/powerpc/kernel/prom.c      | 16 ----------------
 arch/powerpc/mm/hash_utils_64.c | 15 ++++++++++-----
 2 files changed, 10 insertions(+), 21 deletions(-)

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 14693f8ccb80..018ededd1948 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -229,21 +229,6 @@ static void __init check_cpu_pa_features(unsigned long node)
 		      ibm_pa_features, ARRAY_SIZE(ibm_pa_features));
 }
 
-#ifdef CONFIG_PPC_BOOK3S_64
-static void __init init_mmu_slb_size(unsigned long node)
-{
-	const __be32 *slb_size_ptr;
-
-	slb_size_ptr = of_get_flat_dt_prop(node, "slb-size", NULL) ? :
-			of_get_flat_dt_prop(node, "ibm,slb-size", NULL);
-
-	if (slb_size_ptr)
-		slb_set_size(be32_to_cpup(slb_size_ptr));
-}
-#else
-#define init_mmu_slb_size(node) do { } while(0)
-#endif
-
 static struct feature_property {
 	const char *name;
 	u32 min_value;
@@ -379,7 +364,6 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
 	}
 
 	identical_pvr_fixup(node);
-	init_mmu_slb_size(node);
 
 #ifdef CONFIG_PPC64
 	if (nthreads == 1)
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 4aa0797000f7..33ce76be17de 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -344,9 +344,8 @@ static int __init parse_disable_1tb_segments(char *p)
 }
 early_param("disable_1tb_segments", parse_disable_1tb_segments);
 
-static int __init htab_dt_scan_seg_sizes(unsigned long node,
-					 const char *uname, int depth,
-					 void *data)
+static int __init htab_dt_scan_slb(unsigned long node, const char *uname,
+				   int depth, void *data)
 {
 	const char *type = of_get_flat_dt_prop(node, "device_type", NULL);
 	const __be32 *prop;
@@ -356,6 +355,12 @@ static int __init htab_dt_scan_seg_sizes(unsigned long node,
 	if (type == NULL || strcmp(type, "cpu") != 0)
 		return 0;
 
+	prop = of_get_flat_dt_prop(node, "slb-size", NULL);
+	if (!prop)
+		prop = of_get_flat_dt_prop(node, "ibm,slb-size", NULL);
+	if (prop)
+		slb_set_size(be32_to_cpup(prop));
+
 	prop = of_get_flat_dt_prop(node, "ibm,processor-segment-sizes", &size);
 	if (prop == NULL)
 		return 0;
@@ -954,8 +959,8 @@ static void __init htab_initialize(void)
 
 void __init hash__early_init_devtree(void)
 {
-	/* Initialize segment sizes */
-	of_scan_flat_dt(htab_dt_scan_seg_sizes, NULL);
+	/* Initialize SLB size and segment sizes */
+	of_scan_flat_dt(htab_dt_scan_slb, NULL);
 
 	/* Initialize page sizes */
 	htab_scan_page_sizes();
-- 
2.20.1