From 0acbfc66d09e97e5a01e7a23ac7e99f360ff851b Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Fri, 27 Mar 2015 15:10:30 +0100 Subject: [PATCH] MIPS: DMA: Implement platform hook to perform post-DMA cache flushes. Signed-off-by: Ralf Baechle --- arch/mips/include/asm/mach-ath25/dma-coherence.h | 4 ++++ arch/mips/include/asm/mach-bmips/dma-coherence.h | 4 ++++ arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h | 4 ++++ arch/mips/include/asm/mach-generic/dma-coherence.h | 4 ++++ arch/mips/include/asm/mach-ip27/dma-coherence.h | 4 ++++ arch/mips/include/asm/mach-ip32/dma-coherence.h | 4 ++++ arch/mips/include/asm/mach-jazz/dma-coherence.h | 4 ++++ arch/mips/include/asm/mach-loongson/dma-coherence.h | 4 ++++ arch/mips/mm/dma-default.c | 4 +++- 9 files changed, 35 insertions(+), 1 deletion(-) diff --git a/arch/mips/include/asm/mach-ath25/dma-coherence.h b/arch/mips/include/asm/mach-ath25/dma-coherence.h index 65084a0..d5defdd 100644 --- a/arch/mips/include/asm/mach-ath25/dma-coherence.h +++ b/arch/mips/include/asm/mach-ath25/dma-coherence.h @@ -69,4 +69,8 @@ static inline int plat_device_is_coherent(struct device *dev) #endif } +static inline void plat_post_dma_flush(struct device *dev) +{ +} + #endif /* __ASM_MACH_ATH25_DMA_COHERENCE_H */ diff --git a/arch/mips/include/asm/mach-bmips/dma-coherence.h b/arch/mips/include/asm/mach-bmips/dma-coherence.h index 65e95b0..509ab72 100644 --- a/arch/mips/include/asm/mach-bmips/dma-coherence.h +++ b/arch/mips/include/asm/mach-bmips/dma-coherence.h @@ -45,4 +45,8 @@ static inline int plat_device_is_coherent(struct device *dev) return 0; } +static inline void plat_post_dma_flush(struct device *dev) +{ +} + #endif /* __ASM_MACH_BMIPS_DMA_COHERENCE_H */ diff --git a/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h b/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h index f9f4486..460042e 100644 --- a/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h +++ b/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h @@ -57,6 +57,10 @@ static inline int plat_device_is_coherent(struct device *dev) return 1; } +static inline void plat_post_dma_flush(struct device *dev) +{ +} + dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr); phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr); diff --git a/arch/mips/include/asm/mach-generic/dma-coherence.h b/arch/mips/include/asm/mach-generic/dma-coherence.h index 7629c35..6713309 100644 --- a/arch/mips/include/asm/mach-generic/dma-coherence.h +++ b/arch/mips/include/asm/mach-generic/dma-coherence.h @@ -52,6 +52,10 @@ static inline int plat_device_is_coherent(struct device *dev) return coherentio; } +static inline void plat_post_dma_flush(struct device *dev) +{ +} + #ifdef CONFIG_SWIOTLB static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr) { diff --git a/arch/mips/include/asm/mach-ip27/dma-coherence.h b/arch/mips/include/asm/mach-ip27/dma-coherence.h index 4ffddfd..1daa644 100644 --- a/arch/mips/include/asm/mach-ip27/dma-coherence.h +++ b/arch/mips/include/asm/mach-ip27/dma-coherence.h @@ -58,6 +58,10 @@ static inline int plat_dma_supported(struct device *dev, u64 mask) return 1; } +static inline void plat_post_dma_flush(struct device *dev) +{ +} + static inline int plat_device_is_coherent(struct device *dev) { return 1; /* IP27 non-cohernet mode is unsupported */ diff --git a/arch/mips/include/asm/mach-ip32/dma-coherence.h b/arch/mips/include/asm/mach-ip32/dma-coherence.h index 104cfbc..0a0b0e2 100644 --- a/arch/mips/include/asm/mach-ip32/dma-coherence.h +++ b/arch/mips/include/asm/mach-ip32/dma-coherence.h @@ -80,6 +80,10 @@ static inline int plat_dma_supported(struct device *dev, u64 mask) return 1; } +static inline void plat_post_dma_flush(struct device *dev) +{ +} + static inline int plat_device_is_coherent(struct device *dev) { return 0; /* IP32 is non-cohernet */ diff --git a/arch/mips/include/asm/mach-jazz/dma-coherence.h b/arch/mips/include/asm/mach-jazz/dma-coherence.h index 949003e..dc347c2 100644 --- a/arch/mips/include/asm/mach-jazz/dma-coherence.h +++ b/arch/mips/include/asm/mach-jazz/dma-coherence.h @@ -48,6 +48,10 @@ static inline int plat_dma_supported(struct device *dev, u64 mask) return 1; } +static inline void plat_post_dma_flush(struct device *dev) +{ +} + static inline int plat_device_is_coherent(struct device *dev) { return 0; diff --git a/arch/mips/include/asm/mach-loongson/dma-coherence.h b/arch/mips/include/asm/mach-loongson/dma-coherence.h index a905341..4bf4e19 100644 --- a/arch/mips/include/asm/mach-loongson/dma-coherence.h +++ b/arch/mips/include/asm/mach-loongson/dma-coherence.h @@ -78,4 +78,8 @@ static inline int plat_device_is_coherent(struct device *dev) #endif /* CONFIG_DMA_NONCOHERENT */ } +static inline void plat_post_dma_flush(struct device *dev) +{ +} + #endif /* __ASM_MACH_LOONGSON_DMA_COHERENCE_H */ diff --git a/arch/mips/mm/dma-default.c b/arch/mips/mm/dma-default.c index af5f046..609d124 100644 --- a/arch/mips/mm/dma-default.c +++ b/arch/mips/mm/dma-default.c @@ -258,7 +258,7 @@ static void mips_dma_unmap_page(struct device *dev, dma_addr_t dma_addr, if (cpu_needs_post_dma_flush(dev)) __dma_sync(dma_addr_to_page(dev, dma_addr), dma_addr & ~PAGE_MASK, size, direction); - + plat_post_dma_flush(dev); plat_unmap_dma_mem(dev, dma_addr, size, direction); } @@ -312,6 +312,7 @@ static void mips_dma_sync_single_for_cpu(struct device *dev, if (cpu_needs_post_dma_flush(dev)) __dma_sync(dma_addr_to_page(dev, dma_handle), dma_handle & ~PAGE_MASK, size, direction); + plat_post_dma_flush(dev); } static void mips_dma_sync_single_for_device(struct device *dev, @@ -331,6 +332,7 @@ static void mips_dma_sync_sg_for_cpu(struct device *dev, for (i = 0; i < nelems; i++, sg++) __dma_sync(sg_page(sg), sg->offset, sg->length, direction); + plat_post_dma_flush(dev); } static void mips_dma_sync_sg_for_device(struct device *dev, -- 2.7.4