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authorMasahiro Yamada <yamada.masahiro@socionext.com>2017-02-01 16:30:09 +0300
committerRussell King <rmk+kernel@armlinux.org.uk>2017-02-28 14:06:17 +0300
commit06369a1e58bd5eb89c02f9a2cf1a35152cbf1154 (patch)
treec246dd27be6686c5f33fdc56f1595f7881f35d39 /arch/arm/mm/cache-uniphier.c
parent1c63d4c5e16394698072d671029e753715af100a (diff)
downloadlinux-06369a1e58bd5eb89c02f9a2cf1a35152cbf1154.tar.xz
ARM: 8652/1: cache-uniphier: clean up active way setup code
Now, the active way setup function is called with a fixed value zero for the second argument. The code can be simpler. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch/arm/mm/cache-uniphier.c')
-rw-r--r--arch/arm/mm/cache-uniphier.c23
1 files changed, 9 insertions, 14 deletions
diff --git a/arch/arm/mm/cache-uniphier.c b/arch/arm/mm/cache-uniphier.c
index dfe97b409916..f57b080b6fd4 100644
--- a/arch/arm/mm/cache-uniphier.c
+++ b/arch/arm/mm/cache-uniphier.c
@@ -15,6 +15,7 @@
#define pr_fmt(fmt) "uniphier: " fmt
+#include <linux/bitops.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/log2.h>
@@ -71,8 +72,7 @@
* @ctrl_base: virtual base address of control registers
* @rev_base: virtual base address of revision registers
* @op_base: virtual base address of operation registers
- * @way_present_mask: each bit specifies if the way is present
- * @way_locked_mask: each bit specifies if the way is locked
+ * @way_mask: each bit specifies if the way is present
* @nsets: number of associativity sets
* @line_size: line size in bytes
* @range_op_max_size: max size that can be handled by a single range operation
@@ -83,8 +83,7 @@ struct uniphier_cache_data {
void __iomem *rev_base;
void __iomem *op_base;
void __iomem *way_ctrl_base;
- u32 way_present_mask;
- u32 way_locked_mask;
+ u32 way_mask;
u32 nsets;
u32 line_size;
u32 range_op_max_size;
@@ -234,17 +233,13 @@ static void __uniphier_cache_enable(struct uniphier_cache_data *data, bool on)
writel_relaxed(val, data->ctrl_base + UNIPHIER_SSCC);
}
-static void __init __uniphier_cache_set_locked_ways(
- struct uniphier_cache_data *data,
- u32 way_mask)
+static void __init __uniphier_cache_set_active_ways(
+ struct uniphier_cache_data *data)
{
unsigned int cpu;
- data->way_locked_mask = way_mask & data->way_present_mask;
-
for_each_possible_cpu(cpu)
- writel_relaxed(~data->way_locked_mask & data->way_present_mask,
- data->way_ctrl_base + 4 * cpu);
+ writel_relaxed(data->way_mask, data->way_ctrl_base + 4 * cpu);
}
static void uniphier_cache_maint_range(unsigned long start, unsigned long end,
@@ -307,7 +302,7 @@ static void __init uniphier_cache_enable(void)
list_for_each_entry(data, &uniphier_cache_list, list) {
__uniphier_cache_enable(data, true);
- __uniphier_cache_set_locked_ways(data, 0);
+ __uniphier_cache_set_active_ways(data);
}
}
@@ -382,8 +377,8 @@ static int __init __uniphier_cache_init(struct device_node *np,
goto err;
}
- data->way_present_mask =
- ((u32)1 << cache_size / data->nsets / data->line_size) - 1;
+ data->way_mask = GENMASK(cache_size / data->nsets / data->line_size - 1,
+ 0);
data->ctrl_base = of_iomap(np, 0);
if (!data->ctrl_base) {