diff options
Diffstat (limited to 'arch/arm/mm/cache-l2x0.c')
| -rw-r--r-- | arch/arm/mm/cache-l2x0.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c index 9982eb385c0..edb43ff7aee 100644 --- a/arch/arm/mm/cache-l2x0.c +++ b/arch/arm/mm/cache-l2x0.c @@ -29,13 +29,22 @@ static void __iomem *l2x0_base; static DEFINE_SPINLOCK(l2x0_lock); static uint32_t l2x0_way_mask; /* Bitmask of active ways */ -static inline void cache_wait(void __iomem *reg, unsigned long mask) +static inline void cache_wait_way(void __iomem *reg, unsigned long mask) { - /* wait for the operation to complete */ + /* wait for cache operation by line or way to complete */ while (readl_relaxed(reg) & mask) ; } +#ifdef CONFIG_CACHE_PL310 +static inline void cache_wait(void __iomem *reg, unsigned long mask) +{ + /* cache operations by line are atomic on PL310 */ +} +#else +#define cache_wait cache_wait_way +#endif + static inline void cache_sync(void) { void __iomem *base = l2x0_base; @@ -110,7 +119,7 @@ static inline void l2x0_inv_all(void) /* invalidate all ways */ spin_lock_irqsave(&l2x0_lock, flags); writel_relaxed(l2x0_way_mask, l2x0_base + L2X0_INV_WAY); - cache_wait(l2x0_base + L2X0_INV_WAY, l2x0_way_mask); + cache_wait_way(l2x0_base + L2X0_INV_WAY, l2x0_way_mask); cache_sync(); spin_unlock_irqrestore(&l2x0_lock, flags); } |