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ARM: uniphier: export uniphier_cache_enable/disable functions

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The System Cache (outer cache) is used not only as L2 cache,
but also as locked SRAM.  The functions for turning on/off it
is necessary whether the L2 cache is enabled or not.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2016-08-10 16:08:42 +09:00
parent bcc51c1512
commit 6f579db754
2 changed files with 26 additions and 10 deletions
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34
arch/arm/mach-uniphier/arm32/cache-uniphier.c
View File

@ -130,6 +130,28 @@ void uniphier_cache_touch_zero_range(u32 start, u32 end, u32 ways)
UNIPHIER_SSCOQM_CM_TOUCH_ZERO);
}
static void uniphier_cache_endisable(int enable)
{
u32 tmp;
tmp = readl(UNIPHIER_SSCC);
if (enable)
tmp |= UNIPHIER_SSCC_ON;
else
tmp &= ~UNIPHIER_SSCC_ON;
writel(tmp, UNIPHIER_SSCC);
}
void uniphier_cache_enable(void)
{
uniphier_cache_endisable(1);
}
void uniphier_cache_disable(void)
{
uniphier_cache_endisable(0);
}
#ifdef CONFIG_UNIPHIER_L2CACHE_ON
void v7_outer_cache_flush_all(void)
{
@ -176,21 +198,13 @@ void v7_outer_cache_inval_range(u32 start, u32 end)
void v7_outer_cache_enable(void)
{
u32 tmp;
writel(U32_MAX, UNIPHIER_SSCLPDAWCR); /* activate all ways */
tmp = readl(UNIPHIER_SSCC);
tmp |= UNIPHIER_SSCC_ON;
writel(tmp, UNIPHIER_SSCC);
uniphier_cache_enable();
}
void v7_outer_cache_disable(void)
{
u32 tmp;
tmp = readl(UNIPHIER_SSCC);
tmp &= ~UNIPHIER_SSCC_ON;
writel(tmp, UNIPHIER_SSCC);
uniphier_cache_disable();
}
#endif

2
arch/arm/mach-uniphier/arm32/cache-uniphier.h
View File

@ -13,5 +13,7 @@
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_enable(void);
void uniphier_cache_disable(void);
#endif /* __CACHE_UNIPHIER_H */