diff options
| author | Manuel Lauss <manuel.lauss@gmail.com> | 2014-02-20 14:59:22 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-03-26 23:09:20 +0100 |
| commit | 8005711c8d80e452748e9572bead54493818f042 (patch) | |
| tree | 193f76f8296c996e44e8c2bf18b74e3c28aaaf4c /arch | |
| parent | bfc3c5a6c71ea17b79ad524c5627333bd46834a2 (diff) | |
| download | linux-8005711c8d80e452748e9572bead54493818f042.tar.bz2 | |
MIPS: Extend DMA_MAYBE_COHERENT logic to DMA_NONCOHERENT use
Setting DMA_MAYBE_COHERENT gives a platform the opportunity to select
use of cache ops at boot.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/6575/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/include/asm/io.h | 4 | ||||
| -rw-r--r-- | arch/mips/mm/c-r4k.c | 6 | ||||
| -rw-r--r-- | arch/mips/mm/cache.c | 4 |
3 files changed, 7 insertions, 7 deletions
diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h index 3321dd5a8872..e221d1de32f3 100644 --- a/arch/mips/include/asm/io.h +++ b/arch/mips/include/asm/io.h @@ -584,7 +584,7 @@ static inline void memcpy_toio(volatile void __iomem *dst, const void *src, int * * This API used to be exported; it now is for arch code internal use only. */ -#ifdef CONFIG_DMA_NONCOHERENT +#if defined(CONFIG_DMA_NONCOHERENT) || defined(CONFIG_DMA_MAYBE_COHERENT) extern void (*_dma_cache_wback_inv)(unsigned long start, unsigned long size); extern void (*_dma_cache_wback)(unsigned long start, unsigned long size); @@ -603,7 +603,7 @@ extern void (*_dma_cache_inv)(unsigned long start, unsigned long size); #define dma_cache_inv(start,size) \ do { (void) (start); (void) (size); } while (0) -#endif /* CONFIG_DMA_NONCOHERENT */ +#endif /* CONFIG_DMA_NONCOHERENT || CONFIG_DMA_MAYBE_COHERENT */ /* * Read a 32-bit register that requires a 64-bit read cycle on the bus. diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c index 8fc713f1d139..a62b6379b6ae 100644 --- a/arch/mips/mm/c-r4k.c +++ b/arch/mips/mm/c-r4k.c @@ -673,7 +673,7 @@ static void r4k_flush_icache_range(unsigned long start, unsigned long end) instruction_hazard(); } -#ifdef CONFIG_DMA_NONCOHERENT +#if defined(CONFIG_DMA_NONCOHERENT) || defined(CONFIG_DMA_MAYBE_COHERENT) static void r4k_dma_cache_wback_inv(unsigned long addr, unsigned long size) { @@ -744,7 +744,7 @@ static void r4k_dma_cache_inv(unsigned long addr, unsigned long size) bc_inv(addr, size); __sync(); } -#endif /* CONFIG_DMA_NONCOHERENT */ +#endif /* CONFIG_DMA_NONCOHERENT || CONFIG_DMA_MAYBE_COHERENT */ /* * While we're protected against bad userland addresses we don't care @@ -1559,7 +1559,7 @@ void r4k_cache_init(void) flush_icache_range = r4k_flush_icache_range; local_flush_icache_range = local_r4k_flush_icache_range; -#if defined(CONFIG_DMA_NONCOHERENT) +#if defined(CONFIG_DMA_NONCOHERENT) || defined(CONFIG_DMA_MAYBE_COHERENT) if (coherentio) { _dma_cache_wback_inv = (void *)cache_noop; _dma_cache_wback = (void *)cache_noop; diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c index fde7e56d13fe..e422b38d3113 100644 --- a/arch/mips/mm/cache.c +++ b/arch/mips/mm/cache.c @@ -49,7 +49,7 @@ EXPORT_SYMBOL_GPL(local_flush_data_cache_page); EXPORT_SYMBOL(flush_data_cache_page); EXPORT_SYMBOL(flush_icache_all); -#ifdef CONFIG_DMA_NONCOHERENT +#if defined(CONFIG_DMA_NONCOHERENT) || defined(CONFIG_DMA_MAYBE_COHERENT) /* DMA cache operations. */ void (*_dma_cache_wback_inv)(unsigned long start, unsigned long size); @@ -58,7 +58,7 @@ void (*_dma_cache_inv)(unsigned long start, unsigned long size); EXPORT_SYMBOL(_dma_cache_wback_inv); -#endif /* CONFIG_DMA_NONCOHERENT */ +#endif /* CONFIG_DMA_NONCOHERENT || CONFIG_DMA_MAYBE_COHERENT */ /* * We could optimize the case where the cache argument is not BCACHE but |