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-rw-r--r--arch/arm/include/asm/outercache.h66
1 files changed, 51 insertions, 15 deletions
diff --git a/arch/arm/include/asm/outercache.h b/arch/arm/include/asm/outercache.h
index f94784f0e3a6..891a56b35bcf 100644
--- a/arch/arm/include/asm/outercache.h
+++ b/arch/arm/include/asm/outercache.h
@@ -28,53 +28,84 @@ struct outer_cache_fns {
void (*clean_range)(unsigned long, unsigned long);
void (*flush_range)(unsigned long, unsigned long);
void (*flush_all)(void);
- void (*inv_all)(void);
void (*disable)(void);
#ifdef CONFIG_OUTER_CACHE_SYNC
void (*sync)(void);
#endif
- void (*set_debug)(unsigned long);
void (*resume)(void);
+
+ /* This is an ARM L2C thing */
+ void (*write_sec)(unsigned long, unsigned);
};
extern struct outer_cache_fns outer_cache;
#ifdef CONFIG_OUTER_CACHE
-
+/**
+ * outer_inv_range - invalidate range of outer cache lines
+ * @start: starting physical address, inclusive
+ * @end: end physical address, exclusive
+ */
static inline void outer_inv_range(phys_addr_t start, phys_addr_t end)
{
if (outer_cache.inv_range)
outer_cache.inv_range(start, end);
}
+
+/**
+ * outer_clean_range - clean dirty outer cache lines
+ * @start: starting physical address, inclusive
+ * @end: end physical address, exclusive
+ */
static inline void outer_clean_range(phys_addr_t start, phys_addr_t end)
{
if (outer_cache.clean_range)
outer_cache.clean_range(start, end);
}
+
+/**
+ * outer_flush_range - clean and invalidate outer cache lines
+ * @start: starting physical address, inclusive
+ * @end: end physical address, exclusive
+ */
static inline void outer_flush_range(phys_addr_t start, phys_addr_t end)
{
if (outer_cache.flush_range)
outer_cache.flush_range(start, end);
}
+/**
+ * outer_flush_all - clean and invalidate all cache lines in the outer cache
+ *
+ * Note: depending on implementation, this may not be atomic - it must
+ * only be called with interrupts disabled and no other active outer
+ * cache masters.
+ *
+ * It is intended that this function is only used by implementations
+ * needing to override the outer_cache.disable() method due to security.
+ * (Some implementations perform this as a clean followed by an invalidate.)
+ */
static inline void outer_flush_all(void)
{
if (outer_cache.flush_all)
outer_cache.flush_all();
}
-static inline void outer_inv_all(void)
-{
- if (outer_cache.inv_all)
- outer_cache.inv_all();
-}
-
-static inline void outer_disable(void)
-{
- if (outer_cache.disable)
- outer_cache.disable();
-}
+/**
+ * outer_disable - clean, invalidate and disable the outer cache
+ *
+ * Disable the outer cache, ensuring that any data contained in the outer
+ * cache is pushed out to lower levels of system memory. The note and
+ * conditions above concerning outer_flush_all() applies here.
+ */
+extern void outer_disable(void);
+/**
+ * outer_resume - restore the cache configuration and re-enable outer cache
+ *
+ * Restore any configuration that the cache had when previously enabled,
+ * and re-enable the outer cache.
+ */
static inline void outer_resume(void)
{
if (outer_cache.resume)
@@ -90,13 +121,18 @@ static inline void outer_clean_range(phys_addr_t start, phys_addr_t end)
static inline void outer_flush_range(phys_addr_t start, phys_addr_t end)
{ }
static inline void outer_flush_all(void) { }
-static inline void outer_inv_all(void) { }
static inline void outer_disable(void) { }
static inline void outer_resume(void) { }
#endif
#ifdef CONFIG_OUTER_CACHE_SYNC
+/**
+ * outer_sync - perform a sync point for outer cache
+ *
+ * Ensure that all outer cache operations are complete and any store
+ * buffers are drained.
+ */
static inline void outer_sync(void)
{
if (outer_cache.sync)