diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mm/cache-l2x0.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c index edb43ff7aeef..9310d618070b 100644 --- a/arch/arm/mm/cache-l2x0.c +++ b/arch/arm/mm/cache-l2x0.c @@ -112,12 +112,26 @@ static void l2x0_cache_sync(void) spin_unlock_irqrestore(&l2x0_lock, flags); } -static inline void l2x0_inv_all(void) +static void l2x0_flush_all(void) +{ + unsigned long flags; + + /* clean all ways */ + spin_lock_irqsave(&l2x0_lock, flags); + writel_relaxed(l2x0_way_mask, l2x0_base + L2X0_CLEAN_INV_WAY); + cache_wait_way(l2x0_base + L2X0_CLEAN_INV_WAY, l2x0_way_mask); + cache_sync(); + spin_unlock_irqrestore(&l2x0_lock, flags); +} + +static void l2x0_inv_all(void) { unsigned long flags; /* invalidate all ways */ spin_lock_irqsave(&l2x0_lock, flags); + /* Invalidating when L2 is enabled is a nono */ + BUG_ON(readl(l2x0_base + L2X0_CTRL) & 1); writel_relaxed(l2x0_way_mask, l2x0_base + L2X0_INV_WAY); cache_wait_way(l2x0_base + L2X0_INV_WAY, l2x0_way_mask); cache_sync(); @@ -215,6 +229,15 @@ static void l2x0_flush_range(unsigned long start, unsigned long end) spin_unlock_irqrestore(&l2x0_lock, flags); } +static void l2x0_disable(void) +{ + unsigned long flags; + + spin_lock_irqsave(&l2x0_lock, flags); + writel(0, l2x0_base + L2X0_CTRL); + spin_unlock_irqrestore(&l2x0_lock, flags); +} + void __init l2x0_init(void __iomem *base, __u32 aux_val, __u32 aux_mask) { __u32 aux; @@ -272,6 +295,9 @@ void __init l2x0_init(void __iomem *base, __u32 aux_val, __u32 aux_mask) outer_cache.clean_range = l2x0_clean_range; outer_cache.flush_range = l2x0_flush_range; outer_cache.sync = l2x0_cache_sync; + outer_cache.flush_all = l2x0_flush_all; + outer_cache.inv_all = l2x0_inv_all; + outer_cache.disable = l2x0_disable; printk(KERN_INFO "%s cache controller enabled\n", type); printk(KERN_INFO "l2x0: %d ways, CACHE_ID 0x%08x, AUX_CTRL 0x%08x\n", |
