diff --git a/arch/arm26/Kconfig b/arch/arm26/Kconfig index 20688bc13e9bc57ea89785c3e75deb81216f7d58..9044f33299f730b2f7c258da2efb68750f2124d1 100644 --- a/arch/arm26/Kconfig +++ b/arch/arm26/Kconfig @@ -17,6 +17,9 @@ config MMU bool default y +config NO_DMA + def_bool y + config ARCH_ACORN bool default y diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig index 618dbad696f6d535f3fa55ce07cfae23289d7cfa..e35f74e6e50566d489852d5156013e5e65de9c5d 100644 --- a/arch/h8300/Kconfig +++ b/arch/h8300/Kconfig @@ -68,6 +68,9 @@ config TIME_LOW_RES config NO_IOPORT def_bool y +config NO_DMA + def_bool y + config ISA bool default y diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig index c3bb8a755b00a3f13cdfc891a2b42ddbe0d63b63..8ccf3e47bff8a1a79254a7d9a430514d818322ef 100644 --- a/arch/m32r/Kconfig +++ b/arch/m32r/Kconfig @@ -31,6 +31,9 @@ config GENERIC_IRQ_PROBE config NO_IOPORT def_bool y +config NO_DMA + def_bool y + source "init/Kconfig" diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig index b31756d599787b6872077f1829c506574a8f6a24..8f670dae53bb31ea3d520f3f73d8ef0f98483b7c 100644 --- a/drivers/dma/Kconfig +++ b/drivers/dma/Kconfig @@ -3,7 +3,7 @@ # menu "DMA Engine support" - depends on !S390 + depends on HAS_DMA config DMA_ENGINE bool "Support for DMA engines" diff --git a/include/asm-arm26/dma-mapping.h b/include/asm-arm26/dma-mapping.h deleted file mode 100644 index a95eae0aeb77cda6aa64f063b4ee7e957aa51376..0000000000000000000000000000000000000000 --- a/include/asm-arm26/dma-mapping.h +++ /dev/null @@ -1,2 +0,0 @@ -#include - diff --git a/include/asm-generic/dma-mapping-broken.h b/include/asm-generic/dma-mapping-broken.h index 29413d3d460574476c1dc3249efd7b3ca9e2cb32..e2468f894d2aab0d2e22d1fa87b86ab03160b7cb 100644 --- a/include/asm-generic/dma-mapping-broken.h +++ b/include/asm-generic/dma-mapping-broken.h @@ -1,24 +1,82 @@ #ifndef _ASM_GENERIC_DMA_MAPPING_H #define _ASM_GENERIC_DMA_MAPPING_H -/* This is used for archs that do not support DMA */ +/* define the dma api to allow compilation but not linking of + * dma dependent code. Code that depends on the dma-mapping + * API needs to set 'depends on HAS_DMA' in its Kconfig + */ -static inline void * +struct scatterlist; + +extern void * dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, - gfp_t flag) -{ - BUG(); - return NULL; -} + gfp_t flag); -static inline void +extern void dma_free_coherent(struct device *dev, size_t size, void *cpu_addr, - dma_addr_t dma_handle) -{ - BUG(); -} + dma_addr_t dma_handle); #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) +extern dma_addr_t +dma_map_single(struct device *dev, void *ptr, size_t size, + enum dma_data_direction direction); + +extern void +dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, + enum dma_data_direction direction); + +extern int +dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, + enum dma_data_direction direction); + +extern void +dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, + enum dma_data_direction direction); + +extern dma_addr_t +dma_map_page(struct device *dev, struct page *page, unsigned long offset, + size_t size, enum dma_data_direction direction); + +extern void +dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, + enum dma_data_direction direction); + +extern void +dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction); + +extern void +dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle, + unsigned long offset, size_t size, + enum dma_data_direction direction); + +extern void +dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems, + enum dma_data_direction direction); + +#define dma_sync_single_for_device dma_sync_single_for_cpu +#define dma_sync_single_range_for_device dma_sync_single_range_for_cpu +#define dma_sync_sg_for_device dma_sync_sg_for_cpu + +extern int +dma_mapping_error(dma_addr_t dma_addr); + +extern int +dma_supported(struct device *dev, u64 mask); + +extern int +dma_set_mask(struct device *dev, u64 mask); + +extern int +dma_get_cache_alignment(void); + +extern int +dma_is_consistent(struct device *dev, dma_addr_t dma_handle); + +extern void +dma_cache_sync(struct device *dev, void *vaddr, size_t size, + enum dma_data_direction direction); + #endif /* _ASM_GENERIC_DMA_MAPPING_H */ diff --git a/include/asm-h8300/dma-mapping.h b/include/asm-h8300/dma-mapping.h deleted file mode 100644 index d00e40099165b7075ef8efd35df050f06246fce2..0000000000000000000000000000000000000000 --- a/include/asm-h8300/dma-mapping.h +++ /dev/null @@ -1 +0,0 @@ -#include diff --git a/include/asm-m32r/dma-mapping.h b/include/asm-m32r/dma-mapping.h deleted file mode 100644 index f9b58ebba3618411830ed3c91c95053bfcda4261..0000000000000000000000000000000000000000 --- a/include/asm-m32r/dma-mapping.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef _ASM_M32R_DMA_MAPPING_H -#define _ASM_M32R_DMA_MAPPING_H - -#include - -#endif /* _ASM_M32R_DMA_MAPPING_H */ diff --git a/include/asm-s390/dma-mapping.h b/include/asm-s390/dma-mapping.h deleted file mode 100644 index 3f8c12fde0f0830a8cdb876a3f90ad521b1a6e45..0000000000000000000000000000000000000000 --- a/include/asm-s390/dma-mapping.h +++ /dev/null @@ -1,12 +0,0 @@ -/* - * include/asm-s390/dma-mapping.h - * - * S390 version - * - * This file exists so that #include doesn't break anything. - */ - -#ifndef _ASM_DMA_MAPPING_H -#define _ASM_DMA_MAPPING_H - -#endif /* _ASM_DMA_MAPPING_H */ diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 9a663c6db16a09faf68fe0d544e1c41695a9a6ef..2dc21cbeb3049a0d9a2ffa2d0ee27271c66d1c62 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -31,7 +31,11 @@ static inline int valid_dma_direction(int dma_direction) (dma_direction == DMA_FROM_DEVICE)); } +#ifdef CONFIG_HAS_DMA #include +#else +#include +#endif /* Backwards compat, remove in 2.7.x */ #define dma_sync_single dma_sync_single_for_cpu