From efa21e432c7b3c8ae976039d614a017799b6e874 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 9 Sep 2015 15:39:46 -0700 Subject: [PATCH] dma-mapping: cosolidate dma_mapping_error Currently there are three valid implementations of dma_mapping_error: (1) call ->mapping_error (2) check for a hardcoded error code (3) always return 0 This patch provides a common implementation that calls ->mapping_error if present, then checks for DMA_ERROR_CODE if defined or otherwise returns 0. [jcmvbkbc@gmail.com: fix xtensa] Signed-off-by: Christoph Hellwig Cc: Arnd Bergmann Cc: Russell King Cc: Catalin Marinas Cc: Will Deacon Cc: Yoshinori Sato Cc: Michal Simek Cc: Jonas Bonn Cc: Chris Metcalf Cc: Guan Xuetao Cc: Ralf Baechle Cc: Benjamin Herrenschmidt Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: Andy Shevchenko Signed-off-by: Max Filippov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/alpha/include/asm/dma-mapping.h | 5 ----- arch/arm/include/asm/dma-mapping.h | 9 --------- arch/arm64/include/asm/dma-mapping.h | 7 ------- arch/h8300/include/asm/dma-mapping.h | 5 ----- arch/hexagon/include/asm/dma-mapping.h | 11 +---------- arch/ia64/include/asm/dma-mapping.h | 7 ------- arch/microblaze/include/asm/dma-mapping.h | 11 ----------- arch/mips/include/asm/dma-mapping.h | 8 -------- arch/openrisc/include/asm/dma-mapping.h | 5 ----- arch/powerpc/include/asm/dma-mapping.h | 17 ++--------------- arch/s390/include/asm/dma-mapping.h | 10 ---------- arch/sh/include/asm/dma-mapping.h | 13 ++----------- arch/sparc/include/asm/dma-mapping.h | 6 ------ arch/tile/include/asm/dma-mapping.h | 7 ------- arch/unicore32/include/asm/dma-mapping.h | 10 ---------- arch/x86/include/asm/dma-mapping.h | 11 ----------- arch/xtensa/include/asm/dma-mapping.h | 9 --------- include/asm-generic/dma-mapping-common.h | 14 ++++++++++++++ 18 files changed, 19 insertions(+), 146 deletions(-) diff --git a/arch/alpha/include/asm/dma-mapping.h b/arch/alpha/include/asm/dma-mapping.h index 0552bf097245..80ac3e835efe 100644 --- a/arch/alpha/include/asm/dma-mapping.h +++ b/arch/alpha/include/asm/dma-mapping.h @@ -12,11 +12,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) #include -static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - return get_dma_ops(dev)->mapping_error(dev, dma_addr); -} - static inline int dma_supported(struct device *dev, u64 mask) { return get_dma_ops(dev)->dma_supported(dev, mask); diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h index 0b7787167b64..9bef3c541c39 100644 --- a/arch/arm/include/asm/dma-mapping.h +++ b/arch/arm/include/asm/dma-mapping.h @@ -172,15 +172,6 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) static inline void dma_mark_clean(void *addr, size_t size) { } -/* - * DMA errors are defined by all-bits-set in the DMA address. - */ -static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - debug_dma_mapping_error(dev, dma_addr); - return dma_addr == DMA_ERROR_CODE; -} - extern int dma_supported(struct device *dev, u64 mask); extern int arm_dma_set_mask(struct device *dev, u64 dma_mask); diff --git a/arch/arm64/include/asm/dma-mapping.h b/arch/arm64/include/asm/dma-mapping.h index 178e60b80922..f45f444b7a66 100644 --- a/arch/arm64/include/asm/dma-mapping.h +++ b/arch/arm64/include/asm/dma-mapping.h @@ -84,13 +84,6 @@ static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev_addr) return (phys_addr_t)dev_addr; } -static inline int dma_mapping_error(struct device *dev, dma_addr_t dev_addr) -{ - struct dma_map_ops *ops = get_dma_ops(dev); - debug_dma_mapping_error(dev, dev_addr); - return ops->mapping_error(dev, dev_addr); -} - static inline int dma_supported(struct device *dev, u64 mask) { struct dma_map_ops *ops = get_dma_ops(dev); diff --git a/arch/h8300/include/asm/dma-mapping.h b/arch/h8300/include/asm/dma-mapping.h index 72465ce59453..5eef05382fff 100644 --- a/arch/h8300/include/asm/dma-mapping.h +++ b/arch/h8300/include/asm/dma-mapping.h @@ -20,9 +20,4 @@ static inline int dma_set_mask(struct device *dev, u64 mask) return 0; } -static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - return 0; -} - #endif diff --git a/arch/hexagon/include/asm/dma-mapping.h b/arch/hexagon/include/asm/dma-mapping.h index 58d2d8f1544a..e66119290eca 100644 --- a/arch/hexagon/include/asm/dma-mapping.h +++ b/arch/hexagon/include/asm/dma-mapping.h @@ -31,6 +31,7 @@ struct device; extern int bad_dma_address; +#define DMA_ERROR_CODE bad_dma_address extern struct dma_map_ops *dma_ops; @@ -57,14 +58,4 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) return addr + size - 1 <= *dev->dma_mask; } -static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - struct dma_map_ops *dma_ops = get_dma_ops(dev); - - if (dma_ops->mapping_error) - return dma_ops->mapping_error(dev, dma_addr); - - return (dma_addr == bad_dma_address); -} - #endif diff --git a/arch/ia64/include/asm/dma-mapping.h b/arch/ia64/include/asm/dma-mapping.h index a925ff03c964..27b713d0edbc 100644 --- a/arch/ia64/include/asm/dma-mapping.h +++ b/arch/ia64/include/asm/dma-mapping.h @@ -27,13 +27,6 @@ extern void machvec_dma_sync_sg(struct device *, struct scatterlist *, int, #include -static inline int dma_mapping_error(struct device *dev, dma_addr_t daddr) -{ - struct dma_map_ops *ops = platform_dma_get_ops(dev); - debug_dma_mapping_error(dev, daddr); - return ops->mapping_error(dev, daddr); -} - static inline int dma_supported(struct device *dev, u64 mask) { struct dma_map_ops *ops = platform_dma_get_ops(dev); diff --git a/arch/microblaze/include/asm/dma-mapping.h b/arch/microblaze/include/asm/dma-mapping.h index bc81625d486f..e5b843839263 100644 --- a/arch/microblaze/include/asm/dma-mapping.h +++ b/arch/microblaze/include/asm/dma-mapping.h @@ -87,17 +87,6 @@ static inline void __dma_sync(unsigned long paddr, } } -static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - struct dma_map_ops *ops = get_dma_ops(dev); - - debug_dma_mapping_error(dev, dma_addr); - if (ops->mapping_error) - return ops->mapping_error(dev, dma_addr); - - return (dma_addr == DMA_ERROR_CODE); -} - static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, enum dma_data_direction direction) { diff --git a/arch/mips/include/asm/dma-mapping.h b/arch/mips/include/asm/dma-mapping.h index 709b2ba79cc3..158bb36bdcb4 100644 --- a/arch/mips/include/asm/dma-mapping.h +++ b/arch/mips/include/asm/dma-mapping.h @@ -37,14 +37,6 @@ static inline int dma_supported(struct device *dev, u64 mask) return ops->dma_supported(dev, mask); } -static inline int dma_mapping_error(struct device *dev, u64 mask) -{ - struct dma_map_ops *ops = get_dma_ops(dev); - - debug_dma_mapping_error(dev, mask); - return ops->mapping_error(dev, mask); -} - static inline int dma_set_mask(struct device *dev, u64 mask) { diff --git a/arch/openrisc/include/asm/dma-mapping.h b/arch/openrisc/include/asm/dma-mapping.h index 57722528ea4d..7dfe9d50856e 100644 --- a/arch/openrisc/include/asm/dma-mapping.h +++ b/arch/openrisc/include/asm/dma-mapping.h @@ -43,11 +43,6 @@ static inline int dma_supported(struct device *dev, u64 dma_mask) return dma_mask == DMA_BIT_MASK(32); } -static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - return 0; -} - static inline int dma_set_mask(struct device *dev, u64 dma_mask) { if (!dev->dma_mask || !dma_supported(dev, dma_mask)) diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h index 7971b421c677..712d5afc055a 100644 --- a/arch/powerpc/include/asm/dma-mapping.h +++ b/arch/powerpc/include/asm/dma-mapping.h @@ -18,7 +18,9 @@ #include #include +#ifdef CONFIG_PPC64 #define DMA_ERROR_CODE (~(dma_addr_t)0x0) +#endif /* Some dma direct funcs must be visible for use in other dma_ops */ extern void *__dma_direct_alloc_coherent(struct device *dev, size_t size, @@ -137,21 +139,6 @@ extern int dma_set_mask(struct device *dev, u64 dma_mask); extern int __dma_set_mask(struct device *dev, u64 dma_mask); extern u64 __dma_get_required_mask(struct device *dev); -static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - struct dma_map_ops *dma_ops = get_dma_ops(dev); - - debug_dma_mapping_error(dev, dma_addr); - if (dma_ops->mapping_error) - return dma_ops->mapping_error(dev, dma_addr); - -#ifdef CONFIG_PPC64 - return (dma_addr == DMA_ERROR_CODE); -#else - return 0; -#endif -} - static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) { #ifdef CONFIG_SWIOTLB diff --git a/arch/s390/include/asm/dma-mapping.h b/arch/s390/include/asm/dma-mapping.h index b729efeb9ad8..3c293291319b 100644 --- a/arch/s390/include/asm/dma-mapping.h +++ b/arch/s390/include/asm/dma-mapping.h @@ -43,14 +43,4 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) return addr + size - 1 <= *dev->dma_mask; } -static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - struct dma_map_ops *dma_ops = get_dma_ops(dev); - - debug_dma_mapping_error(dev, dma_addr); - if (dma_ops->mapping_error) - return dma_ops->mapping_error(dev, dma_addr); - return dma_addr == DMA_ERROR_CODE; -} - #endif /* _ASM_S390_DMA_MAPPING_H */ diff --git a/arch/sh/include/asm/dma-mapping.h b/arch/sh/include/asm/dma-mapping.h index 2c3fa2ccbe9b..98308c497162 100644 --- a/arch/sh/include/asm/dma-mapping.h +++ b/arch/sh/include/asm/dma-mapping.h @@ -9,6 +9,8 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) return dma_ops; } +#define DMA_ERROR_CODE 0 + #include static inline int dma_supported(struct device *dev, u64 mask) @@ -38,17 +40,6 @@ static inline int dma_set_mask(struct device *dev, u64 mask) void dma_cache_sync(struct device *dev, void *vaddr, size_t size, enum dma_data_direction dir); -static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - struct dma_map_ops *ops = get_dma_ops(dev); - - debug_dma_mapping_error(dev, dma_addr); - if (ops->mapping_error) - return ops->mapping_error(dev, dma_addr); - - return dma_addr == 0; -} - /* arch/sh/mm/consistent.c */ extern void *dma_generic_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_addr, gfp_t flag, diff --git a/arch/sparc/include/asm/dma-mapping.h b/arch/sparc/include/asm/dma-mapping.h index 2564edcb9728..5069d137453b 100644 --- a/arch/sparc/include/asm/dma-mapping.h +++ b/arch/sparc/include/asm/dma-mapping.h @@ -38,12 +38,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) #include -static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - debug_dma_mapping_error(dev, dma_addr); - return (dma_addr == DMA_ERROR_CODE); -} - static inline int dma_set_mask(struct device *dev, u64 mask) { #ifdef CONFIG_PCI diff --git a/arch/tile/include/asm/dma-mapping.h b/arch/tile/include/asm/dma-mapping.h index e982dfa5d2f4..f8f7a05023bf 100644 --- a/arch/tile/include/asm/dma-mapping.h +++ b/arch/tile/include/asm/dma-mapping.h @@ -74,13 +74,6 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) return addr + size - 1 <= *dev->dma_mask; } -static inline int -dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - debug_dma_mapping_error(dev, dma_addr); - return get_dma_ops(dev)->mapping_error(dev, dma_addr); -} - static inline int dma_supported(struct device *dev, u64 mask) { diff --git a/arch/unicore32/include/asm/dma-mapping.h b/arch/unicore32/include/asm/dma-mapping.h index 636e942940a0..175d7e3f7b0a 100644 --- a/arch/unicore32/include/asm/dma-mapping.h +++ b/arch/unicore32/include/asm/dma-mapping.h @@ -38,16 +38,6 @@ static inline int dma_supported(struct device *dev, u64 mask) return dma_ops->dma_supported(dev, mask); } -static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - struct dma_map_ops *dma_ops = get_dma_ops(dev); - - if (dma_ops->mapping_error) - return dma_ops->mapping_error(dev, dma_addr); - - return 0; -} - #include static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) diff --git a/arch/x86/include/asm/dma-mapping.h b/arch/x86/include/asm/dma-mapping.h index 7e47e4d6e69c..bbca62e3e43f 100644 --- a/arch/x86/include/asm/dma-mapping.h +++ b/arch/x86/include/asm/dma-mapping.h @@ -45,17 +45,6 @@ bool arch_dma_alloc_attrs(struct device **dev, gfp_t *gfp); #include -/* Make sure we keep the same behaviour */ -static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - struct dma_map_ops *ops = get_dma_ops(dev); - debug_dma_mapping_error(dev, dma_addr); - if (ops->mapping_error) - return ops->mapping_error(dev, dma_addr); - - return (dma_addr == DMA_ERROR_CODE); -} - extern int dma_supported(struct device *hwdev, u64 mask); extern int dma_set_mask(struct device *dev, u64 mask); diff --git a/arch/xtensa/include/asm/dma-mapping.h b/arch/xtensa/include/asm/dma-mapping.h index 0a19581375da..21925bfdaff7 100644 --- a/arch/xtensa/include/asm/dma-mapping.h +++ b/arch/xtensa/include/asm/dma-mapping.h @@ -32,15 +32,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) #include -static inline int -dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - struct dma_map_ops *ops = get_dma_ops(dev); - - debug_dma_mapping_error(dev, dma_addr); - return ops->mapping_error(dev, dma_addr); -} - static inline int dma_supported(struct device *dev, u64 mask) { diff --git a/include/asm-generic/dma-mapping-common.h b/include/asm-generic/dma-mapping-common.h index ec321dd98f93..cdaa24193d4c 100644 --- a/include/asm-generic/dma-mapping-common.h +++ b/include/asm-generic/dma-mapping-common.h @@ -313,4 +313,18 @@ static inline void dma_free_noncoherent(struct device *dev, size_t size, dma_free_attrs(dev, size, cpu_addr, dma_handle, &attrs); } +static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) +{ + debug_dma_mapping_error(dev, dma_addr); + + if (get_dma_ops(dev)->mapping_error) + return get_dma_ops(dev)->mapping_error(dev, dma_addr); + +#ifdef DMA_ERROR_CODE + return dma_addr == DMA_ERROR_CODE; +#else + return 0; +#endif +} + #endif -- 2.30.2