diff options
| author | Catalin Marinas <catalin.marinas@arm.com> | 2007-02-05 13:48:08 (GMT) |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-02-08 14:49:40 (GMT) |
| commit | 953233dc9958ba2b29753d0f24e37a33a076a5f6 (patch) | |
| tree | b9cc9ddc82722dc79a72a8c6f4977566ec2e0384 /include/asm-arm | |
| parent | 7f8e33546d17c7d8849be3a6623c3b6b3c9b588b (diff) | |
| download | linux-fsl-qoriq-953233dc9958ba2b29753d0f24e37a33a076a5f6.tar.xz | |
[ARM] 4134/1: Add generic support for outer caches
The outer cache can be L2 as on RealView/EB MPCore platform or even L3
or further on ARMv7 cores. This patch adds the generic support for
flushing the outer cache in the DMA operations.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include/asm-arm')
| -rw-r--r-- | include/asm-arm/cacheflush.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/include/asm-arm/cacheflush.h b/include/asm-arm/cacheflush.h index 5f531ea..ce60b37 100644 --- a/include/asm-arm/cacheflush.h +++ b/include/asm-arm/cacheflush.h @@ -190,6 +190,12 @@ struct cpu_cache_fns { void (*dma_flush_range)(unsigned long, unsigned long); }; +struct outer_cache_fns { + void (*inv_range)(unsigned long, unsigned long); + void (*clean_range)(unsigned long, unsigned long); + void (*flush_range)(unsigned long, unsigned long); +}; + /* * Select the calling method */ @@ -246,6 +252,37 @@ extern void dmac_flush_range(unsigned long, unsigned long); #endif +#ifdef CONFIG_OUTER_CACHE + +extern struct outer_cache_fns outer_cache; + +static inline void outer_inv_range(unsigned long start, unsigned long end) +{ + if (outer_cache.inv_range) + outer_cache.inv_range(start, end); +} +static inline void outer_clean_range(unsigned long start, unsigned long end) +{ + if (outer_cache.clean_range) + outer_cache.clean_range(start, end); +} +static inline void outer_flush_range(unsigned long start, unsigned long end) +{ + if (outer_cache.flush_range) + outer_cache.flush_range(start, end); +} + +#else + +static inline void outer_inv_range(unsigned long start, unsigned long end) +{ } +static inline void outer_clean_range(unsigned long start, unsigned long end) +{ } +static inline void outer_flush_range(unsigned long start, unsigned long end) +{ } + +#endif + /* * flush_cache_vmap() is used when creating mappings (eg, via vmap, * vmalloc, ioremap etc) in kernel space for pages. Since the |