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ARM: uniphier: add uniphier_cache_set_active_ways()

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This outer cache allows to control active ways independently for
each CPU, so this function will be useful to set up active ways
for a specific CPU.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada
2016-08-10 16:08:48 +09:00
parent 5941638027
commit ee9bc77f3a
2 changed files with 22 additions and 1 deletions
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22
arch/arm/mach-uniphier/arm32/cache-uniphier.c
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@@ -192,6 +192,26 @@ void uniphier_cache_inv_way(u32 ways)
UNIPHIER_SSCOQM_CM_INV);
}
void uniphier_cache_set_active_ways(int cpu, u32 active_ways)
{
void __iomem *base = (void __iomem *)UNIPHIER_SSCC + 0xc00;
switch (readl(UNIPHIER_SSCID)) { /* revision */
case 0x11: /* sLD3 */
base = (void __iomem *)UNIPHIER_SSCC + 0x870;
break;
case 0x12: /* LD4 */
case 0x16: /* sld8 */
base = (void __iomem *)UNIPHIER_SSCC + 0x840;
break;
default:
base = (void __iomem *)UNIPHIER_SSCC + 0xc00;
break;
}
writel(active_ways, base + 4 * cpu);
}
static void uniphier_cache_endisable(int enable)
{
u32 tmp;
@@ -260,7 +280,7 @@ void v7_outer_cache_inval_range(u32 start, u32 end)
void v7_outer_cache_enable(void)
{
writel(U32_MAX, UNIPHIER_SSCLPDAWCR); /* activate all ways */
uniphier_cache_set_active_ways(0, U32_MAX); /* activate all ways */
uniphier_cache_enable();
}

1
arch/arm/mach-uniphier/arm32/cache-uniphier.h
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@@ -14,6 +14,7 @@ void uniphier_cache_prefetch_range(u32 start, u32 end, u32 ways);
void uniphier_cache_touch_range(u32 start, u32 end, u32 ways);
void uniphier_cache_touch_zero_range(u32 start, u32 end, u32 ways);
void uniphier_cache_inv_way(u32 ways);
void uniphier_cache_set_active_ways(int cpu, u32 active_ways);
void uniphier_cache_enable(void);
void uniphier_cache_disable(void);