diff options
Diffstat (limited to 'arch')
65 files changed, 826 insertions, 2269 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index 141823f19a8b..3841ea204a4f 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -205,9 +205,6 @@ config HAVE_NMI_WATCHDOG config HAVE_ARCH_TRACEHOOK bool -config HAVE_DMA_ATTRS - bool - config HAVE_DMA_CONTIGUOUS bool @@ -628,4 +625,7 @@ config OLD_SIGACTION config COMPAT_OLD_SIGACTION bool +config ARCH_NO_COHERENT_DMA_MMAP + bool + source "kernel/gcov/Kconfig" diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index f515a4dbf7a0..9d8a85801ed1 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -9,7 +9,6 @@ config ALPHA select HAVE_OPROFILE select HAVE_PCSPKR_PLATFORM select HAVE_PERF_EVENTS - select HAVE_DMA_ATTRS select VIRT_TO_BUS select GENERIC_IRQ_PROBE select AUTO_IRQ_AFFINITY if SMP diff --git a/arch/alpha/include/asm/dma-mapping.h b/arch/alpha/include/asm/dma-mapping.h index 72a8ca7796d9..3c3451f58ff4 100644 --- a/arch/alpha/include/asm/dma-mapping.h +++ b/arch/alpha/include/asm/dma-mapping.h @@ -10,8 +10,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) return dma_ops; } -#include <asm-generic/dma-mapping-common.h> - #define dma_cache_sync(dev, va, size, dir) ((void)0) #endif /* _ALPHA_DMA_MAPPING_H */ diff --git a/arch/arc/include/asm/dma-mapping.h b/arch/arc/include/asm/dma-mapping.h index 2d28ba939d8e..660205414f1d 100644 --- a/arch/arc/include/asm/dma-mapping.h +++ b/arch/arc/include/asm/dma-mapping.h @@ -11,192 +11,11 @@ #ifndef ASM_ARC_DMA_MAPPING_H #define ASM_ARC_DMA_MAPPING_H -#include <asm-generic/dma-coherent.h> -#include <asm/cacheflush.h> +extern struct dma_map_ops arc_dma_ops; -void *dma_alloc_noncoherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp); - -void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr, - dma_addr_t dma_handle); - -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp); - -void dma_free_coherent(struct device *dev, size_t size, void *kvaddr, - dma_addr_t dma_handle); - -/* drivers/base/dma-mapping.c */ -extern int dma_common_mmap(struct device *dev, struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t dma_addr, size_t size); -extern int dma_common_get_sgtable(struct device *dev, struct sg_table *sgt, - void *cpu_addr, dma_addr_t dma_addr, - size_t size); - -#define dma_mmap_coherent(d, v, c, h, s) dma_common_mmap(d, v, c, h, s) -#define dma_get_sgtable(d, t, v, h, s) dma_common_get_sgtable(d, t, v, h, s) - -/* - * streaming DMA Mapping API... - * CPU accesses page via normal paddr, thus needs to explicitly made - * consistent before each use - */ - -static inline void __inline_dma_cache_sync(unsigned long paddr, size_t size, - enum dma_data_direction dir) -{ - switch (dir) { - case DMA_FROM_DEVICE: - dma_cache_inv(paddr, size); - break; - case DMA_TO_DEVICE: - dma_cache_wback(paddr, size); - break; - case DMA_BIDIRECTIONAL: - dma_cache_wback_inv(paddr, size); - break; - default: - pr_err("Invalid DMA dir [%d] for OP @ %lx\n", dir, paddr); - } -} - -void __arc_dma_cache_sync(unsigned long paddr, size_t size, - enum dma_data_direction dir); - -#define _dma_cache_sync(addr, sz, dir) \ -do { \ - if (__builtin_constant_p(dir)) \ - __inline_dma_cache_sync(addr, sz, dir); \ - else \ - __arc_dma_cache_sync(addr, sz, dir); \ -} \ -while (0); - -static inline dma_addr_t -dma_map_single(struct device *dev, void *cpu_addr, size_t size, - enum dma_data_direction dir) -{ - _dma_cache_sync((unsigned long)cpu_addr, size, dir); - return (dma_addr_t)cpu_addr; -} - -static inline void -dma_unmap_single(struct device *dev, dma_addr_t dma_addr, - size_t size, enum dma_data_direction dir) -{ -} - -static inline dma_addr_t -dma_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction dir) -{ - unsigned long paddr = page_to_phys(page) + offset; - return dma_map_single(dev, (void *)paddr, size, dir); -} - -static inline void -dma_unmap_page(struct device *dev, dma_addr_t dma_handle, - size_t size, enum dma_data_direction dir) -{ -} - -static inline int -dma_map_sg(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction dir) -{ - struct scatterlist *s; - int i; - - for_each_sg(sg, s, nents, i) - s->dma_address = dma_map_page(dev, sg_page(s), s->offset, - s->length, dir); - - return nents; -} - -static inline void -dma_unmap_sg(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction dir) +static inline struct dma_map_ops *get_dma_ops(struct device *dev) { - struct scatterlist *s; - int i; - - for_each_sg(sg, s, nents, i) - dma_unmap_page(dev, sg_dma_address(s), sg_dma_len(s), dir); -} - -static inline void -dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, - size_t size, enum dma_data_direction dir) -{ - _dma_cache_sync(dma_handle, size, DMA_FROM_DEVICE); -} - -static inline void -dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, - size_t size, enum dma_data_direction dir) -{ - _dma_cache_sync(dma_handle, size, DMA_TO_DEVICE); -} - -static inline 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) -{ - _dma_cache_sync(dma_handle + offset, size, DMA_FROM_DEVICE); -} - -static inline void -dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ - _dma_cache_sync(dma_handle + offset, size, DMA_TO_DEVICE); -} - -static inline void -dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sglist, int nelems, - enum dma_data_direction dir) -{ - int i; - struct scatterlist *sg; - - for_each_sg(sglist, sg, nelems, i) - _dma_cache_sync((unsigned int)sg_virt(sg), sg->length, dir); -} - -static inline void -dma_sync_sg_for_device(struct device *dev, struct scatterlist *sglist, - int nelems, enum dma_data_direction dir) -{ - int i; - struct scatterlist *sg; - - for_each_sg(sglist, sg, nelems, i) - _dma_cache_sync((unsigned int)sg_virt(sg), sg->length, dir); -} - -static inline int dma_supported(struct device *dev, u64 dma_mask) -{ - /* Support 32 bit DMA mask exclusively */ - 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)) - return -EIO; - - *dev->dma_mask = dma_mask; - - return 0; + return &arc_dma_ops; } #endif diff --git a/arch/arc/mm/dma.c b/arch/arc/mm/dma.c index 29a46bb198cc..695029f41a48 100644 --- a/arch/arc/mm/dma.c +++ b/arch/arc/mm/dma.c @@ -17,18 +17,14 @@ */ #include <linux/dma-mapping.h> -#include <linux/dma-debug.h> -#include <linux/export.h> #include <asm/cache.h> #include <asm/cacheflush.h> -/* - * Helpers for Coherent DMA API. - */ -void *dma_alloc_noncoherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp) + +static void *arc_dma_alloc(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp, struct dma_attrs *attrs) { - void *paddr; + void *paddr, *kvaddr; /* This is linear addr (0x8000_0000 based) */ paddr = alloc_pages_exact(size, gfp); @@ -38,22 +34,6 @@ void *dma_alloc_noncoherent(struct device *dev, size_t size, /* This is bus address, platform dependent */ *dma_handle = (dma_addr_t)paddr; - return paddr; -} -EXPORT_SYMBOL(dma_alloc_noncoherent); - -void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr, - dma_addr_t dma_handle) -{ - free_pages_exact((void *)dma_handle, size); -} -EXPORT_SYMBOL(dma_free_noncoherent); - -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp) -{ - void *paddr, *kvaddr; - /* * IOC relies on all data (even coherent DMA data) being in cache * Thus allocate normal cached memory @@ -65,22 +45,15 @@ void *dma_alloc_coherent(struct device *dev, size_t size, * -For coherent data, Read/Write to buffers terminate early in cache * (vs. always going to memory - thus are faster) */ - if (is_isa_arcv2() && ioc_exists) - return dma_alloc_noncoherent(dev, size, dma_handle, gfp); - - /* This is linear addr (0x8000_0000 based) */ - paddr = alloc_pages_exact(size, gfp); - if (!paddr) - return NULL; + if ((is_isa_arcv2() && ioc_exists) || + dma_get_attr(DMA_ATTR_NON_CONSISTENT, attrs)) + return paddr; /* This is kernel Virtual address (0x7000_0000 based) */ kvaddr = ioremap_nocache((unsigned long)paddr, size); if (kvaddr == NULL) return NULL; - /* This is bus address, platform dependent */ - *dma_handle = (dma_addr_t)paddr; - /* * Evict any existing L1 and/or L2 lines for the backing page * in case it was used earlier as a normal "cached" page. @@ -95,26 +68,110 @@ void *dma_alloc_coherent(struct device *dev, size_t size, return kvaddr; } -EXPORT_SYMBOL(dma_alloc_coherent); -void dma_free_coherent(struct device *dev, size_t size, void *kvaddr, - dma_addr_t dma_handle) +static void arc_dma_free(struct device *dev, size_t size, void *vaddr, + dma_addr_t dma_handle, struct dma_attrs *attrs) { - if (is_isa_arcv2() && ioc_exists) - return dma_free_noncoherent(dev, size, kvaddr, dma_handle); - - iounmap((void __force __iomem *)kvaddr); + if (!(is_isa_arcv2() && ioc_exists) || + dma_get_attr(DMA_ATTR_NON_CONSISTENT, attrs)) + iounmap((void __force __iomem *)vaddr); free_pages_exact((void *)dma_handle, size); } -EXPORT_SYMBOL(dma_free_coherent); /* - * Helper for streaming DMA... + * streaming DMA Mapping API... + * CPU accesses page via normal paddr, thus needs to explicitly made + * consistent before each use */ -void __arc_dma_cache_sync(unsigned long paddr, size_t size, - enum dma_data_direction dir) +static void _dma_cache_sync(unsigned long paddr, size_t size, + enum dma_data_direction dir) +{ + switch (dir) { + case DMA_FROM_DEVICE: + dma_cache_inv(paddr, size); + break; + case DMA_TO_DEVICE: + dma_cache_wback(paddr, size); + break; + case DMA_BIDIRECTIONAL: + dma_cache_wback_inv(paddr, size); + break; + default: + pr_err("Invalid DMA dir [%d] for OP @ %lx\n", dir, paddr); + } +} + +static dma_addr_t arc_dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, enum dma_data_direction dir, + struct dma_attrs *attrs) +{ + unsigned long paddr = page_to_phys(page) + offset; + return dma_map_single(dev, (void *)paddr, size, dir); +} + +static int arc_dma_map_sg(struct device *dev, struct scatterlist *sg, + int nents, enum dma_data_direction dir, struct dma_attrs *attrs) +{ + struct scatterlist *s; + int i; + + for_each_sg(sg, s, nents, i) + s->dma_address = dma_map_page(dev, sg_page(s), s->offset, + s->length, dir); + + return nents; +} + +static void arc_dma_sync_single_for_cpu(struct device *dev, + dma_addr_t dma_handle, size_t size, enum dma_data_direction dir) +{ + _dma_cache_sync(dma_handle, size, DMA_FROM_DEVICE); +} + +static void arc_dma_sync_single_for_device(struct device *dev, + dma_addr_t dma_handle, size_t size, enum dma_data_direction dir) { - __inline_dma_cache_sync(paddr, size, dir); + _dma_cache_sync(dma_handle, size, DMA_TO_DEVICE); } -EXPORT_SYMBOL(__arc_dma_cache_sync); + +static void arc_dma_sync_sg_for_cpu(struct device *dev, + struct scatterlist *sglist, int nelems, + enum dma_data_direction dir) +{ + int i; + struct scatterlist *sg; + + for_each_sg(sglist, sg, nelems, i) + _dma_cache_sync((unsigned int)sg_virt(sg), sg->length, dir); +} + +static void arc_dma_sync_sg_for_device(struct device *dev, + struct scatterlist *sglist, int nelems, + enum dma_data_direction dir) +{ + int i; + struct scatterlist *sg; + + for_each_sg(sglist, sg, nelems, i) + _dma_cache_sync((unsigned int)sg_virt(sg), sg->length, dir); +} + +static int arc_dma_supported(struct device *dev, u64 dma_mask) +{ + /* Support 32 bit DMA mask exclusively */ + return dma_mask == DMA_BIT_MASK(32); +} + +struct dma_map_ops arc_dma_ops = { + .alloc = arc_dma_alloc, + .free = arc_dma_free, + .map_page = arc_dma_map_page, + .map_sg = arc_dma_map_sg, + .sync_single_for_device = arc_dma_sync_single_for_device, + .sync_single_for_cpu = arc_dma_sync_single_for_cpu, + .sync_sg_for_cpu = arc_dma_sync_sg_for_cpu, + .sync_sg_for_device = arc_dma_sync_sg_for_device, + .dma_supported = arc_dma_supported, +}; +EXPORT_SYMBOL(arc_dma_ops); diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 85f19ddf0304..1d0ba141833b 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -44,7 +44,6 @@ config ARM select HAVE_C_RECORDMCOUNT select HAVE_DEBUG_KMEMLEAK select HAVE_DMA_API_DEBUG - select HAVE_DMA_ATTRS select HAVE_DMA_CONTIGUOUS if MMU select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL) && !CPU_ENDIAN_BE32 select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h index ccb3aa64640d..6ad1ceda62a5 100644 --- a/arch/arm/include/asm/dma-mapping.h +++ b/arch/arm/include/asm/dma-mapping.h @@ -41,13 +41,6 @@ static inline void set_dma_ops(struct device *dev, struct dma_map_ops *ops) #define HAVE_ARCH_DMA_SUPPORTED 1 extern int dma_supported(struct device *dev, u64 mask); -/* - * Note that while the generic code provides dummy dma_{alloc,free}_noncoherent - * implementations, we don't provide a dma_cache_sync function so drivers using - * this API are highlighted with build warnings. - */ -#include <asm-generic/dma-mapping-common.h> - #ifdef __arch_page_to_dma #error Please update to __arch_pfn_to_dma #endif diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index e06041711fff..0a566c5a2699 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -63,7 +63,6 @@ config ARM64 select HAVE_DEBUG_BUGVERBOSE select HAVE_DEBUG_KMEMLEAK select HAVE_DMA_API_DEBUG - select HAVE_DMA_ATTRS select HAVE_DMA_CONTIGUOUS select HAVE_DYNAMIC_FTRACE select HAVE_EFFICIENT_UNALIGNED_ACCESS diff --git a/arch/arm64/include/asm/dma-mapping.h b/arch/arm64/include/asm/dma-mapping.h index 61e08f360e31..ba437f090a74 100644 --- a/arch/arm64/include/asm/dma-mapping.h +++ b/arch/arm64/include/asm/dma-mapping.h @@ -64,8 +64,6 @@ static inline bool is_device_dma_coherent(struct device *dev) return dev->archdata.dma_coherent; } -#include <asm-generic/dma-mapping-common.h> - static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr) { return (dma_addr_t)paddr; diff --git a/arch/avr32/include/asm/dma-mapping.h b/arch/avr32/include/asm/dma-mapping.h index ae7ac9205d20..1115f2a645d1 100644 --- a/arch/avr32/include/asm/dma-mapping.h +++ b/arch/avr32/include/asm/dma-mapping.h @@ -1,350 +1,14 @@ #ifndef __ASM_AVR32_DMA_MAPPING_H #define __ASM_AVR32_DMA_MAPPING_H -#include <linux/mm.h> -#include <linux/device.h> -#include <linux/scatterlist.h> -#include <asm/processor.h> -#include <asm/cacheflush.h> -#include <asm/io.h> - extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size, int direction); -/* - * Return whether the given device DMA address mask can be supported - * properly. For example, if your device can only drive the low 24-bits - * during bus mastering, then you would pass 0x00ffffff as the mask - * to this function. - */ -static inline int dma_supported(struct device *dev, u64 mask) -{ - /* Fix when needed. I really don't know of any limitations */ - return 1; -} - -static inline int dma_set_mask(struct device *dev, u64 dma_mask) -{ - if (!dev->dma_mask || !dma_supported(dev, dma_mask)) - return -EIO; - - *dev->dma_mask = dma_mask; - return 0; -} +extern struct dma_map_ops avr32_dma_ops; -/* - * dma_map_single can't fail as it is implemented now. - */ -static inline int dma_mapping_error(struct device *dev, dma_addr_t addr) +static inline struct dma_map_ops *get_dma_ops(struct device *dev) { - return 0; + return &avr32_dma_ops; } -/** - * dma_alloc_coherent - allocate consistent memory for DMA - * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices - * @size: required memory size - * @handle: bus-specific DMA address - * - * Allocate some uncached, unbuffered memory for a device for - * performing DMA. This function allocates pages, and will - * return the CPU-viewed address, and sets @handle to be the - * device-viewed address. - */ -extern void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *handle, gfp_t gfp); - -/** - * dma_free_coherent - free memory allocated by dma_alloc_coherent - * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices - * @size: size of memory originally requested in dma_alloc_coherent - * @cpu_addr: CPU-view address returned from dma_alloc_coherent - * @handle: device-view address returned from dma_alloc_coherent - * - * Free (and unmap) a DMA buffer previously allocated by - * dma_alloc_coherent(). - * - * References to memory and mappings associated with cpu_addr/handle - * during and after this call executing are illegal. - */ -extern void dma_free_coherent(struct device *dev, size_t size, - void *cpu_addr, dma_addr_t handle); - -/** - * dma_alloc_writecombine - allocate write-combining memory for DMA - * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices - * @size: required memory size - * @handle: bus-specific DMA address - * - * Allocate some uncached, buffered memory for a device for - * performing DMA. This function allocates pages, and will - * return the CPU-viewed address, and sets @handle to be the - * device-viewed address. - */ -extern void *dma_alloc_writecombine(struct device *dev, size_t size, - dma_addr_t *handle, gfp_t gfp); - -/** - * dma_free_coherent - free memory allocated by dma_alloc_writecombine - * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices - * @size: size of memory originally requested in dma_alloc_writecombine - * @cpu_addr: CPU-view address returned from dma_alloc_writecombine - * @handle: device-view address returned from dma_alloc_writecombine - * - * Free (and unmap) a DMA buffer previously allocated by - * dma_alloc_writecombine(). - * - * References to memory and mappings associated with cpu_addr/handle - * during and after this call executing are illegal. - */ -extern void dma_free_writecombine(struct device *dev, size_t size, - void *cpu_addr, dma_addr_t handle); - -/** - * dma_map_single - map a single buffer for streaming DMA - * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices - * @cpu_addr: CPU direct mapped address of buffer - * @size: size of buffer to map - * @dir: DMA transfer direction - * - * Ensure that any data held in the cache is appropriately discarded - * or written back. - * - * The device owns this memory once this call has completed. The CPU - * can regain ownership by calling dma_unmap_single() or dma_sync_single(). - */ -static inline dma_addr_t -dma_map_single(struct device *dev, void *cpu_addr, size_t size, - enum dma_data_direction direction) -{ - dma_cache_sync(dev, cpu_addr, size, direction); - return virt_to_bus(cpu_addr); -} - -/** - * dma_unmap_single - unmap a single buffer previously mapped - * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices - * @handle: DMA address of buffer - * @size: size of buffer to map - * @dir: DMA transfer direction - * - * Unmap a single streaming mode DMA translation. The handle and size - * must match what was provided in the previous dma_map_single() call. - * All other usages are undefined. - * - * After this call, reads by the CPU to the buffer are guaranteed to see - * whatever the device wrote there. - */ -static inline void -dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, - enum dma_data_direction direction) -{ - -} - -/** - * dma_map_page - map a portion of a page for streaming DMA - * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices - * @page: page that buffer resides in - * @offset: offset into page for start of buffer - * @size: size of buffer to map - * @dir: DMA transfer direction - * - * Ensure that any data held in the cache is appropriately discarded - * or written back. - * - * The device owns this memory once this call has completed. The CPU - * can regain ownership by calling dma_unmap_page() or dma_sync_single(). - */ -static inline dma_addr_t -dma_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ - return dma_map_single(dev, page_address(page) + offset, - size, direction); -} - -/** - * dma_unmap_page - unmap a buffer previously mapped through dma_map_page() - * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices - * @handle: DMA address of buffer - * @size: size of buffer to map - * @dir: DMA transfer direction - * - * Unmap a single streaming mode DMA translation. The handle and size - * must match what was provided in the previous dma_map_single() call. - * All other usages are undefined. - * - * After this call, reads by the CPU to the buffer are guaranteed to see - * whatever the device wrote there. - */ -static inline void -dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, - enum dma_data_direction direction) -{ - dma_unmap_single(dev, dma_address, size, direction); -} - -/** - * dma_map_sg - map a set of SG buffers for streaming mode DMA - * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices - * @sg: list of buffers - * @nents: number of buffers to map - * @dir: DMA transfer direction - * - * Map a set of buffers described by scatterlist in streaming - * mode for DMA. This is the scatter-gather version of the - * above pci_map_single interface. Here the scatter gather list - * elements are each tagged with the appropriate dma address - * and length. They are obtained via sg_dma_{address,length}(SG). - * - * NOTE: An implementation may be able to use a smaller number of - * DMA address/length pairs than there are SG table elements. - * (for example via virtual mapping capabilities) - * The routine returns the number of addr/length pairs actually - * used, at most nents. - * - * Device ownership issues as mentioned above for pci_map_single are - * the same here. - */ -static inline int -dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, - enum dma_data_direction direction) -{ - int i; - struct scatterlist *sg; - - for_each_sg(sglist, sg, nents, i) { - char *virt; - - sg->dma_address = page_to_bus(sg_page(sg)) + sg->offset; - virt = sg_virt(sg); - dma_cache_sync(dev, virt, sg->length, direction); - } - - return nents; -} - -/** - * dma_unmap_sg - unmap a set of SG buffers mapped by dma_map_sg - * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices - * @sg: list of buffers - * @nents: number of buffers to map - * @dir: DMA transfer direction - * - * Unmap a set of streaming mode DMA translations. - * Again, CPU read rules concerning calls here are the same as for - * pci_unmap_single() above. - */ -static inline void -dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, - enum dma_data_direction direction) -{ - -} - -/** - * dma_sync_single_for_cpu - * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices - * @handle: DMA address of buffer - * @size: size of buffer to map - * @dir: DMA transfer direction - * - * Make physical memory consistent for a single streaming mode DMA - * translation after a transfer. - * - * If you perform a dma_map_single() but wish to interrogate the - * buffer using the cpu, yet do not wish to teardown the DMA mapping, - * you must call this function before doing so. At the next point you - * give the DMA address back to the card, you must first perform a - * dma_sync_single_for_device, and then the device again owns the - * buffer. - */ -static inline void -dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, - size_t size, enum dma_data_direction direction) -{ - /* - * No need to do anything since the CPU isn't supposed to - * touch this memory after we flushed it at mapping- or - * sync-for-device time. - */ -} - -static inline void -dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, - size_t size, enum dma_data_direction direction) -{ - dma_cache_sync(dev, bus_to_virt(dma_handle), size, direction); -} - -static inline 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) -{ - /* just sync everything, that's all the pci API can do */ - dma_sync_single_for_cpu(dev, dma_handle, offset+size, direction); -} - -static inline void -dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ - /* just sync everything, that's all the pci API can do */ - dma_sync_single_for_device(dev, dma_handle, offset+size, direction); -} - -/** - * dma_sync_sg_for_cpu - * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices - * @sg: list of buffers - * @nents: number of buffers to map - * @dir: DMA transfer direction - * - * Make physical memory consistent for a set of streaming - * mode DMA translations after a transfer. - * - * The same as dma_sync_single_for_* but for a scatter-gather list, - * same rules and usage. - */ -static inline void -dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction direction) -{ - /* - * No need to do anything since the CPU isn't supposed to - * touch this memory after we flushed it at mapping- or - * sync-for-device time. - */ -} - -static inline void -dma_sync_sg_for_device(struct device *dev, struct scatterlist *sglist, - int nents, enum dma_data_direction direction) -{ - int i; - struct scatterlist *sg; - - for_each_sg(sglist, sg, nents, i) - dma_cache_sync(dev, sg_virt(sg), sg->length, direction); -} - -/* Now for the API extensions over the pci_ one */ - -#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) - -/* drivers/base/dma-mapping.c */ -extern int dma_common_mmap(struct device *dev, struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t dma_addr, size_t size); -extern int dma_common_get_sgtable(struct device *dev, struct sg_table *sgt, - void *cpu_addr, dma_addr_t dma_addr, - size_t size); - -#define dma_mmap_coherent(d, v, c, h, s) dma_common_mmap(d, v, c, h, s) -#define dma_get_sgtable(d, t, v, h, s) dma_common_get_sgtable(d, t, v, h, s) - #endif /* __ASM_AVR32_DMA_MAPPING_H */ diff --git a/arch/avr32/mm/dma-coherent.c b/arch/avr32/mm/dma-coherent.c index 50cdb5b10f0f..5b5e80ff4e9c 100644 --- a/arch/avr32/mm/dma-coherent.c +++ b/arch/avr32/mm/dma-coherent.c @@ -9,9 +9,14 @@ #include <linux/dma-mapping.h> #include <linux/gfp.h> #include <linux/export.h> +#include <linux/mm.h> +#include <linux/device.h> +#include <linux/scatterlist.h> -#include <asm/addrspace.h> +#include <asm/processor.h> #include <asm/cacheflush.h> +#include <asm/io.h> +#include <asm/addrspace.h> void dma_cache_sync(struct device *dev, void *vaddr, size_t size, int direction) { @@ -93,60 +98,100 @@ static void __dma_free(struct device *dev, size_t size, __free_page(page++); } -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *handle, gfp_t gfp) +static void *avr32_dma_alloc(struct device *dev, size_t size, + dma_addr_t *handle, gfp_t gfp, struct dma_attrs *attrs) { struct page *page; - void *ret = NULL; + dma_addr_t phys; page = __dma_alloc(dev, size, handle, gfp); - if (page) - ret = phys_to_uncached(page_to_phys(page)); + if (!page) + return NULL; + phys = page_to_phys(page); - return ret; + if (dma_get_attr(DMA_ATTR_WRITE_COMBINE, attrs)) { + /* Now, map the page into P3 with write-combining turned on */ + *handle = phys; + return __ioremap(phys, size, _PAGE_BUFFER); + } else { + return phys_to_uncached(phys); + } } -EXPORT_SYMBOL(dma_alloc_coherent); -void dma_free_coherent(struct device *dev, size_t size, - void *cpu_addr, dma_addr_t handle) +static void avr32_dma_free(struct device *dev, size_t size, + void *cpu_addr, dma_addr_t handle, struct dma_attrs *attrs) { - void *addr = phys_to_cached(uncached_to_phys(cpu_addr)); struct page *page; - pr_debug("dma_free_coherent addr %p (phys %08lx) size %u\n", - cpu_addr, (unsigned long)handle, (unsigned)size); - BUG_ON(!virt_addr_valid(addr)); - page = virt_to_page(addr); + if (dma_get_attr(DMA_ATTR_WRITE_COMBINE, attrs)) { + iounmap(cpu_addr); + + page = phys_to_page(handle); + } else { + void *addr = phys_to_cached(uncached_to_phys(cpu_addr)); + + pr_debug("avr32_dma_free addr %p (phys %08lx) size %u\n", + cpu_addr, (unsigned long)handle, (unsigned)size); + + BUG_ON(!virt_addr_valid(addr)); + page = virt_to_page(addr); + } + __dma_free(dev, size, page, handle); } -EXPORT_SYMBOL(dma_free_coherent); -void *dma_alloc_writecombine(struct device *dev, size_t size, - dma_addr_t *handle, gfp_t gfp) +static dma_addr_t avr32_dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction direction, struct dma_attrs *attrs) { - struct page *page; - dma_addr_t phys; + void *cpu_addr = page_address(page) + offset; - page = __dma_alloc(dev, size, handle, gfp); - if (!page) - return NULL; + dma_cache_sync(dev, cpu_addr, size, direction); + return virt_to_bus(cpu_addr); +} - phys = page_to_phys(page); - *handle = phys; +static int avr32_dma_map_sg(struct device *dev, struct scatterlist *sglist, + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs) +{ + int i; + struct scatterlist *sg; + + for_each_sg(sglist, sg, nents, i) { + char *virt; - /* Now, map the page into P3 with write-combining turned on */ - return __ioremap(phys, size, _PAGE_BUFFER); + sg->dma_address = page_to_bus(sg_page(sg)) + sg->offset; + virt = sg_virt(sg); + dma_cache_sync(dev, virt, sg->length, direction); + } + + return nents; } -EXPORT_SYMBOL(dma_alloc_writecombine); -void dma_free_writecombine(struct device *dev, size_t size, - void *cpu_addr, dma_addr_t handle) +static void avr32_dma_sync_single_for_device(struct device *dev, + dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) { - struct page *page; + dma_cache_sync(dev, bus_to_virt(dma_handle), size, direction); +} - iounmap(cpu_addr); +static void avr32_dma_sync_sg_for_device(struct device *dev, + struct scatterlist *sglist, int nents, + enum dma_data_direction direction) +{ + int i; + struct scatterlist *sg; - page = phys_to_page(handle); - __dma_free(dev, size, page, handle); + for_each_sg(sglist, sg, nents, i) + dma_cache_sync(dev, sg_virt(sg), sg->length, direction); } -EXPORT_SYMBOL(dma_free_writecombine); + +struct dma_map_ops avr32_dma_ops = { + .alloc = avr32_dma_alloc, + .free = avr32_dma_free, + .map_page = avr32_dma_map_page, + .map_sg = avr32_dma_map_sg, + .sync_single_for_device = avr32_dma_sync_single_for_device, + .sync_sg_for_device = avr32_dma_sync_sg_for_device, +}; +EXPORT_SYMBOL(avr32_dma_ops); diff --git a/arch/blackfin/include/asm/dma-mapping.h b/arch/blackfin/include/asm/dma-mapping.h index 054d9ec57d9d..3490570aaa82 100644 --- a/arch/blackfin/include/asm/dma-mapping.h +++ b/arch/blackfin/include/asm/dma-mapping.h @@ -8,36 +8,6 @@ #define _BLACKFIN_DMA_MAPPING_H #include <asm/cacheflush.h> -struct scatterlist; - -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp); -void dma_free_coherent(struct device *dev, size_t size, void *vaddr, - dma_addr_t dma_handle); - -/* - * Now for the API extensions over the pci_ one - */ -#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) -#define dma_supported(d, m) (1) - -static inline int -dma_set_mask(struct device *dev, u64 dma_mask) -{ - if (!dev->dma_mask || !dma_supported(dev, dma_mask)) - return -EIO; - - *dev->dma_mask = dma_mask; - - return 0; -} - -static inline int -dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - return 0; -} extern void __dma_sync(dma_addr_t addr, size_t size, enum dma_data_direction dir); @@ -66,102 +36,11 @@ _dma_sync(dma_addr_t addr, size_t size, enum dma_data_direction dir) __dma_sync(addr, size, dir); } -static inline dma_addr_t -dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction dir) -{ - _dma_sync((dma_addr_t)ptr, size, dir); - return (dma_addr_t) ptr; -} - -static inline dma_addr_t -dma_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction dir) -{ - return dma_map_single(dev, page_address(page) + offset, size, dir); -} - -static inline void -dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, - enum dma_data_direction dir) -{ - BUG_ON(!valid_dma_direction(dir)); -} - -static inline void -dma_unmap_page(struct device *dev, dma_addr_t dma_addr, size_t size, - enum dma_data_direction dir) -{ - dma_unmap_single(dev, dma_addr, size, dir); -} +extern struct dma_map_ops bfin_dma_ops; -extern int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction dir); - -static inline void -dma_unmap_sg(struct device *dev, struct scatterlist *sg, - int nhwentries, enum dma_data_direction dir) +static inline struct dma_map_ops *get_dma_ops(struct device *dev) { - BUG_ON(!valid_dma_direction(dir)); + return &bfin_dma_ops; } -static inline void -dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t handle, - unsigned long offset, size_t size, - enum dma_data_direction dir) -{ - BUG_ON(!valid_dma_direction(dir)); -} - -static inline void -dma_sync_single_range_for_device(struct device *dev, dma_addr_t handle, - unsigned long offset, size_t size, - enum dma_data_direction dir) -{ - _dma_sync(handle + offset, size, dir); -} - -static inline void -dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle, size_t size, - enum dma_data_direction dir) -{ - dma_sync_single_range_for_cpu(dev, handle, 0, size, dir); -} - -static inline void -dma_sync_single_for_device(struct device *dev, dma_addr_t handle, size_t size, - enum dma_data_direction dir) -{ - dma_sync_single_range_for_device(dev, handle, 0, size, dir); -} - -static inline void -dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction dir) -{ - BUG_ON(!valid_dma_direction(dir)); -} - -extern void -dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction dir); - -static inline void -dma_cache_sync(struct device *dev, void *vaddr, size_t size, - enum dma_data_direction dir) -{ - _dma_sync((dma_addr_t)vaddr, size, dir); -} - -/* drivers/base/dma-mapping.c */ -extern int dma_common_mmap(struct device *dev, struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t dma_addr, size_t size); -extern int dma_common_get_sgtable(struct device *dev, struct sg_table *sgt, - void *cpu_addr, dma_addr_t dma_addr, - size_t size); - -#define dma_mmap_coherent(d, v, c, h, s) dma_common_mmap(d, v, c, h, s) -#define dma_get_sgtable(d, t, v, h, s) dma_common_get_sgtable(d, t, v, h, s) - #endif /* _BLACKFIN_DMA_MAPPING_H */ diff --git a/arch/blackfin/kernel/dma-mapping.c b/arch/blackfin/kernel/dma-mapping.c index df437e52d9df..771afe6e4264 100644 --- a/arch/blackfin/kernel/dma-mapping.c +++ b/arch/blackfin/kernel/dma-mapping.c @@ -78,8 +78,8 @@ static void __free_dma_pages(unsigned long addr, unsigned int pages) spin_unlock_irqrestore(&dma_page_lock, flags); } -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp) +static void *bfin_dma_alloc(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp, struct dma_attrs *attrs) { void *ret; @@ -92,15 +92,12 @@ void *dma_alloc_coherent(struct device *dev, size_t size, return ret; } -EXPORT_SYMBOL(dma_alloc_coherent); -void -dma_free_coherent(struct device *dev, size_t size, void *vaddr, - dma_addr_t dma_handle) +static void bfin_dma_free(struct device *dev, size_t size, void *vaddr, + dma_addr_t dma_handle, struct dma_attrs *attrs) { __free_dma_pages((unsigned long)vaddr, get_pages(size)); } -EXPORT_SYMBOL(dma_free_coherent); /* * Streaming DMA mappings @@ -112,9 +109,9 @@ void __dma_sync(dma_addr_t addr, size_t size, } EXPORT_SYMBOL(__dma_sync); -int -dma_map_sg(struct device *dev, struct scatterlist *sg_list, int nents, - enum dma_data_direction direction) +static int bfin_dma_map_sg(struct device *dev, struct scatterlist *sg_list, + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs) { struct scatterlist *sg; int i; @@ -126,10 +123,10 @@ dma_map_sg(struct device *dev, struct scatterlist *sg_list, int nents, return nents; } -EXPORT_SYMBOL(dma_map_sg); -void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg_list, - int nelems, enum dma_data_direction direction) +static void bfin_dma_sync_sg_for_device(struct device *dev, + struct scatterlist *sg_list, int nelems, + enum dma_data_direction direction) { struct scatterlist *sg; int i; @@ -139,4 +136,31 @@ void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg_list, __dma_sync(sg_dma_address(sg), sg_dma_len(sg), direction); } } -EXPORT_SYMBOL(dma_sync_sg_for_device); + +static dma_addr_t bfin_dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, enum dma_data_direction dir, + struct dma_attrs *attrs) +{ + dma_addr_t handle = (dma_addr_t)(page_address(page) + offset); + + _dma_sync(handle, size, dir); + return handle; +} + +static inline void bfin_dma_sync_single_for_device(struct device *dev, + dma_addr_t handle, size_t size, enum dma_data_direction dir) +{ + _dma_sync(handle, size, dir); +} + +struct dma_map_ops bfin_dma_ops = { + .alloc = bfin_dma_alloc, + .free = bfin_dma_free, + + .map_page = bfin_dma_map_page, + .map_sg = bfin_dma_map_sg, + + .sync_single_for_device = bfin_dma_sync_single_for_device, + .sync_sg_for_device = bfin_dma_sync_sg_for_device, +}; +EXPORT_SYMBOL(bfin_dma_ops); diff --git a/arch/c6x/Kconfig b/arch/c6x/Kconfig index 77ea09b8bce1..79049d432d3c 100644 --- a/arch/c6x/Kconfig +++ b/arch/c6x/Kconfig @@ -17,6 +17,7 @@ config C6X select OF_EARLY_FLATTREE select GENERIC_CLOCKEVENTS select MODULES_USE_ELF_RELA + select ARCH_NO_COHERENT_DMA_MMAP config MMU def_bool n diff --git a/arch/c6x/include/asm/dma-mapping.h b/arch/c6x/include/asm/dma-mapping.h index bbd7774e4d4e..6b5cd7b0cf32 100644 --- a/arch/c6x/include/asm/dma-mapping.h +++ b/arch/c6x/include/asm/dma-mapping.h @@ -12,104 +12,22 @@ #ifndef _ASM_C6X_DMA_MAPPING_H #define _ASM_C6X_DMA_MAPPING_H -#include <linux/dma-debug.h> -#include <asm-generic/dma-coherent.h> - -#define dma_supported(d, m) 1 - -static inline void dma_sync_single_range_for_device(struct device *dev, - dma_addr_t addr, - unsigned long offset, - size_t size, - enum dma_data_direction dir) -{ -} - -static inline int dma_set_mask(struct device *dev, u64 dma_mask) -{ - if (!dev->dma_mask || !dma_supported(dev, dma_mask)) - return -EIO; - - *dev->dma_mask = dma_mask; - - return 0; -} - /* * 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 == ~0; -} - -extern dma_addr_t dma_map_single(struct device *dev, void *cpu_addr, - size_t size, enum dma_data_direction dir); +#define DMA_ERROR_CODE ~0 -extern void dma_unmap_single(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir); +extern struct dma_map_ops c6x_dma_ops; -extern int dma_map_sg(struct device *dev, struct scatterlist *sglist, - int nents, enum dma_data_direction direction); - -extern void dma_unmap_sg(struct device *dev, struct scatterlist *sglist, - int nents, enum dma_data_direction direction); - -static inline dma_addr_t dma_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction dir) +static inline struct dma_map_ops *get_dma_ops(struct device *dev) { - dma_addr_t handle; - - handle = dma_map_single(dev, page_address(page) + offset, size, dir); - - debug_dma_map_page(dev, page, offset, size, dir, handle, false); - - return handle; -} - -static inline void dma_unmap_page(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir) -{ - dma_unmap_single(dev, handle, size, dir); - - debug_dma_unmap_page(dev, handle, size, dir, false); + return &c6x_dma_ops; } -extern void dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir); - -extern void dma_sync_single_for_device(struct device *dev, dma_addr_t handle, - size_t size, - enum dma_data_direction dir); - -extern void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction dir); - -extern void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction dir); - extern void coherent_mem_init(u32 start, u32 size); -extern void *dma_alloc_coherent(struct device *, size_t, dma_addr_t *, gfp_t); -extern void dma_free_coherent(struct device *, size_t, void *, dma_addr_t); - -#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)) - -/* Not supported for now */ -static inline int dma_mmap_coherent(struct device *dev, - struct vm_area_struct *vma, void *cpu_addr, - dma_addr_t dma_addr, size_t size) -{ - return -EINVAL; -} - -static inline int dma_get_sgtable(struct device *dev, struct sg_table *sgt, - void *cpu_addr, dma_addr_t dma_addr, - size_t size) -{ - return -EINVAL; -} +void *c6x_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, + gfp_t gfp, struct dma_attrs *attrs); +void c6x_dma_free(struct device *dev, size_t size, void *vaddr, + dma_addr_t dma_handle, struct dma_attrs *attrs); #endif /* _ASM_C6X_DMA_MAPPING_H */ diff --git a/arch/c6x/kernel/dma.c b/arch/c6x/kernel/dma.c index ab7b12de144d..8a80f3a250c0 100644 --- a/arch/c6x/kernel/dma.c +++ b/arch/c6x/kernel/dma.c @@ -36,110 +36,101 @@ static void c6x_dma_sync(dma_addr_t handle, size_t size, } } -dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction dir) +static dma_addr_t c6x_dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, enum dma_data_direction dir, + struct dma_attrs *attrs) { - dma_addr_t addr = virt_to_phys(ptr); + dma_addr_t handle = virt_to_phys(page_address(page) + offset); - c6x_dma_sync(addr, size, dir); - - debug_dma_map_page(dev, virt_to_page(ptr), - (unsigned long)ptr & ~PAGE_MASK, size, - dir, addr, true); - return addr; + c6x_dma_sync(handle, size, dir); + return handle; } -EXPORT_SYMBOL(dma_map_single); - -void dma_unmap_single(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir) +static void c6x_dma_unmap_page(struct device *dev, dma_addr_t handle, + size_t size, enum dma_data_direction dir, struct dma_attrs *attrs) { c6x_dma_sync(handle, size, dir); - - debug_dma_unmap_page(dev, handle, size, dir, true); } -EXPORT_SYMBOL(dma_unmap_single); - -int dma_map_sg(struct device *dev, struct scatterlist *sglist, - int nents, enum dma_data_direction dir) +static int c6x_dma_map_sg(struct device *dev, struct scatterlist *sglist, + int nents, enum dma_data_direction dir, struct dma_attrs *attrs) { struct scatterlist *sg; int i; - for_each_sg(sglist, sg, nents, i) - sg->dma_address = dma_map_single(dev, sg_virt(sg), sg->length, - dir); - - debug_dma_map_sg(dev, sglist, nents, nents, dir); + for_each_sg(sglist, sg, nents, i) { + sg->dma_address = sg_phys(sg); + c6x_dma_sync(sg->dma_address, sg->length, dir); + } return nents; } -EXPORT_SYMBOL(dma_map_sg); - -void dma_unmap_sg(struct device *dev, struct scatterlist *sglist, - int nents, enum dma_data_direction dir) +static void c6x_dma_unmap_sg(struct device *dev, struct scatterlist *sglist, + int nents, enum dma_data_direction dir, + struct dma_attrs *attrs) { struct scatterlist *sg; int i; for_each_sg(sglist, sg, nents, i) - dma_unmap_single(dev, sg_dma_address(sg), sg->length, dir); + c6x_dma_sync(sg_dma_address(sg), sg->length, dir); - debug_dma_unmap_sg(dev, sglist, nents, dir); } -EXPORT_SYMBOL(dma_unmap_sg); -void dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir) +static void c6x_dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle, + size_t size, enum dma_data_direction dir) { c6x_dma_sync(handle, size, dir); - debug_dma_sync_single_for_cpu(dev, handle, size, dir); } -EXPORT_SYMBOL(dma_sync_single_for_cpu); - -void dma_sync_single_for_device(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir) +static void c6x_dma_sync_single_for_device(struct device *dev, + dma_addr_t handle, size_t size, enum dma_data_direction dir) { c6x_dma_sync(handle, size, dir); - debug_dma_sync_single_for_device(dev, handle, size, dir); } -EXPORT_SYMBOL(dma_sync_single_for_device); - -void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sglist, - int nents, enum dma_data_direction dir) +static void c6x_dma_sync_sg_for_cpu(struct device *dev, + struct scatterlist *sglist, int nents, + enum dma_data_direction dir) { struct scatterlist *sg; int i; for_each_sg(sglist, sg, nents, i) - dma_sync_single_for_cpu(dev, sg_dma_address(sg), + c6x_dma_sync_single_for_cpu(dev, sg_dma_address(sg), sg->length, dir); - debug_dma_sync_sg_for_cpu(dev, sglist, nents, dir); } -EXPORT_SYMBOL(dma_sync_sg_for_cpu); - -void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sglist, - int nents, enum dma_data_direction dir) +static void c6x_dma_sync_sg_for_device(struct device *dev, + struct scatterlist *sglist, int nents, + enum dma_data_direction dir) { struct scatterlist *sg; int i; for_each_sg(sglist, sg, nents, i) - dma_sync_single_for_device(dev, sg_dma_address(sg), + c6x_dma_sync_single_for_device(dev, sg_dma_address(sg), sg->length, dir); - debug_dma_sync_sg_for_device(dev, sglist, nents, dir); } -EXPORT_SYMBOL(dma_sync_sg_for_device); +struct dma_map_ops c6x_dma_ops = { + .alloc = c6x_dma_alloc, + .free = c6x_dma_free, + .map_page = c6x_dma_map_page, + .unmap_page = c6x_dma_unmap_page, + .map_sg = c6x_dma_map_sg, + .unmap_sg = c6x_dma_unmap_sg, + .sync_single_for_device = c6x_dma_sync_single_for_device, + .sync_single_for_cpu = c6x_dma_sync_single_for_cpu, + .sync_sg_for_device = c6x_dma_sync_sg_for_device, + .sync_sg_for_cpu = c6x_dma_sync_sg_for_cpu, +}; +EXPORT_SYMBOL(c6x_dma_ops); /* Number of entries preallocated for DMA-API debugging */ #define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16) diff --git a/arch/c6x/mm/dma-coherent.c b/arch/c6x/mm/dma-coherent.c index 4187e5180373..f7ee63af2541 100644 --- a/arch/c6x/mm/dma-coherent.c +++ b/arch/c6x/mm/dma-coherent.c @@ -73,8 +73,8 @@ static void __free_dma_pages(u32 addr, int order) * Allocate DMA coherent memory space and return both the kernel * virtual and DMA address for that space. */ -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *handle, gfp_t gfp) +void *c6x_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, + gfp_t gfp, struct dma_attrs *attrs) { u32 paddr; int order; @@ -94,13 +94,12 @@ void *dma_alloc_coherent(struct device *dev, size_t size, return phys_to_virt(paddr); } -EXPORT_SYMBOL(dma_alloc_coherent); /* * Free DMA coherent memory as defined by the above mapping. */ -void dma_free_coherent(struct device *dev, size_t size, void *vaddr, - dma_addr_t dma_handle) +void c6x_dma_free(struct device *dev, size_t size, void *vaddr, + dma_addr_t dma_handle, struct dma_attrs *attrs) { int order; @@ -111,7 +110,6 @@ void dma_free_coherent(struct device *dev, size_t size, void *vaddr, __free_dma_pages(virt_to_phys(vaddr), order); } -EXPORT_SYMBOL(dma_free_coherent); /* * Initialise the coherent DMA memory allocator using the given uncached region. diff --git a/arch/cris/arch-v32/drivers/pci/dma.c b/arch/cris/arch-v32/drivers/pci/dma.c index ee55578d9834..8d5efa58cce1 100644 --- a/arch/cris/arch-v32/drivers/pci/dma.c +++ b/arch/cris/arch-v32/drivers/pci/dma.c @@ -16,21 +16,18 @@ #include <linux/gfp.h> #include <asm/io.h> -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp) +static void *v32_dma_alloc(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp, struct dma_attrs *attrs) { void *ret; - int order = get_order(size); + /* ignore region specifiers */ gfp &= ~(__GFP_DMA | __GFP_HIGHMEM); - if (dma_alloc_from_coherent(dev, size, dma_handle, &ret)) - return ret; - if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff)) gfp |= GFP_DMA; - ret = (void *)__get_free_pages(gfp, order); + ret = (void *)__get_free_pages(gfp, get_order(size)); if (ret != NULL) { memset(ret, 0, size); @@ -39,12 +36,45 @@ void *dma_alloc_coherent(struct device *dev, size_t size, return ret; } -void dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle) +static void v32_dma_free(struct device *dev, size_t size, void *vaddr, + dma_addr_t dma_handle, struct dma_attrs *attrs) +{ + free_pages((unsigned long)vaddr, get_order(size)); +} + +static inline dma_addr_t v32_dma_map_page(struct device *dev, + struct page *page, unsigned long offset, size_t size, + enum dma_data_direction direction, + struct dma_attrs *attrs) { - int order = get_order(size); + return page_to_phys(page) + offset; +} - if (!dma_release_from_coherent(dev, order, vaddr)) - free_pages((unsigned long)vaddr, order); +static inline int v32_dma_map_sg(struct device *dev, struct scatterlist *sg, + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs) +{ + printk("Map sg\n"); + return nents; +} + +static inline int v32_dma_supported(struct device *dev, u64 mask) +{ + /* + * we fall back to GFP_DMA when the mask isn't all 1s, + * so we can't guarantee allocations that must be + * within a tighter range than GFP_DMA.. + */ + if (mask < 0x00ffffff) + return 0; + return 1; } +struct dma_map_ops v32_dma_ops = { + .alloc = v32_dma_alloc, + .free = v32_dma_free, + .map_page = v32_dma_map_page, + .map_sg = v32_dma_map_sg, + .dma_supported = v32_dma_supported, +}; +EXPORT_SYMBOL(v32_dma_ops); diff --git a/arch/cris/include/asm/dma-mapping.h b/arch/cris/include/asm/dma-mapping.h index 57f794ee6039..5a370178a0e9 100644 --- a/arch/cris/include/asm/dma-mapping.h +++ b/arch/cris/include/asm/dma-mapping.h @@ -1,156 +1,20 @@ -/* DMA mapping. Nothing tricky here, just virt_to_phys */ - #ifndef _ASM_CRIS_DMA_MAPPING_H #define _ASM_CRIS_DMA_MAPPING_H -#include <linux/mm.h> -#include <linux/kernel.h> -#include <linux/scatterlist.h> - -#include <asm/cache.h> -#include <asm/io.h> - -#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) - #ifdef CONFIG_PCI -#include <asm-generic/dma-coherent.h> - -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag); +extern struct dma_map_ops v32_dma_ops; -void dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle); -#else -static inline void * -dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, - gfp_t flag) +static inline struct dma_map_ops *get_dma_ops(struct device *dev) { - BUG(); - return NULL; + return &v32_dma_ops; } - -static inline void -dma_free_coherent(struct device *dev, size_t size, void *cpu_addr, - dma_addr_t dma_handle) +#else +static inline struct dma_map_ops *get_dma_ops(struct device *dev) { - BUG(); + BUG(); + return NULL; } #endif -static inline dma_addr_t -dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); - return virt_to_phys(ptr); -} - -static inline void -dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); -} - -static inline int -dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction direction) -{ - printk("Map sg\n"); - return nents; -} - -static inline dma_addr_t -dma_map_page(struct device *dev, struct page *page, unsigned long offset, - size_t size, enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); - return page_to_phys(page) + offset; -} - -static inline void -dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); -} - - -static inline void -dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); -} - -static inline void -dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size, - enum dma_data_direction direction) -{ -} - -static inline void -dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size, - enum dma_data_direction direction) -{ -} - -static inline 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) -{ -} - -static inline void -dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ -} - -static inline void -dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems, - enum dma_data_direction direction) -{ -} - -static inline void -dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems, - enum dma_data_direction direction) -{ -} - -static inline int -dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - return 0; -} - -static inline int -dma_supported(struct device *dev, u64 mask) -{ - /* - * we fall back to GFP_DMA when the mask isn't all 1s, - * so we can't guarantee allocations that must be - * within a tighter range than GFP_DMA.. - */ - if(mask < 0x00ffffff) - return 0; - - return 1; -} - -static inline int -dma_set_mask(struct device *dev, u64 mask) -{ - if(!dev->dma_mask || !dma_supported(dev, mask)) - return -EIO; - - *dev->dma_mask = mask; - - return 0; -} static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, @@ -158,15 +22,4 @@ dma_cache_sync(struct device *dev, void *vaddr, size_t size, { } -/* drivers/base/dma-mapping.c */ -extern int dma_common_mmap(struct device *dev, struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t dma_addr, size_t size); -extern int dma_common_get_sgtable(struct device *dev, struct sg_table *sgt, - void *cpu_addr, dma_addr_t dma_addr, - size_t size); - -#define dma_mmap_coherent(d, v, c, h, s) dma_common_mmap(d, v, c, h, s) -#define dma_get_sgtable(d, t, v, h, s) dma_common_get_sgtable(d, t, v, h, s) - - #endif diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig index 34aa19352dc1..4211be88e082 100644 --- a/arch/frv/Kconfig +++ b/arch/frv/Kconfig @@ -14,6 +14,7 @@ config FRV select OLD_SIGSUSPEND3 select OLD_SIGACTION select HAVE_DEBUG_STACKOVERFLOW + select ARCH_NO_COHERENT_DMA_MMAP config ZONE_DMA bool diff --git a/arch/frv/include/asm/dma-mapping.h b/arch/frv/include/asm/dma-mapping.h index 2840adcd6d92..9a82bfa4303b 100644 --- a/arch/frv/include/asm/dma-mapping.h +++ b/arch/frv/include/asm/dma-mapping.h @@ -1,128 +1,17 @@ #ifndef _ASM_DMA_MAPPING_H #define _ASM_DMA_MAPPING_H -#include <linux/device.h> -#include <linux/scatterlist.h> #include <asm/cache.h> #include <asm/cacheflush.h> -#include <asm/io.h> - -/* - * See Documentation/DMA-API.txt for the description of how the - * following DMA API should work. - */ - -#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 unsigned long __nongprelbss dma_coherent_mem_start; extern unsigned long __nongprelbss dma_coherent_mem_end; -void *dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp); -void dma_free_coherent(struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle); - -extern dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction direction); - -static inline -void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); -} - -extern int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction direction); - -static inline -void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); -} - -extern -dma_addr_t dma_map_page(struct device *dev, struct page *page, unsigned long offset, - size_t size, enum dma_data_direction direction); - -static inline -void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); -} - - -static inline -void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size, - enum dma_data_direction direction) -{ -} - -static inline -void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size, - enum dma_data_direction direction) -{ - flush_write_buffers(); -} - -static inline -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) -{ -} - -static inline -void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ - flush_write_buffers(); -} - -static inline -void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems, - enum dma_data_direction direction) -{ -} - -static inline -void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems, - enum dma_data_direction direction) -{ - flush_write_buffers(); -} - -static inline -int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - return 0; -} - -static inline -int dma_supported(struct device *dev, u64 mask) -{ - /* - * we fall back to GFP_DMA when the mask isn't all 1s, - * so we can't guarantee allocations that must be - * within a tighter range than GFP_DMA.. - */ - if (mask < 0x00ffffff) - return 0; - - return 1; -} +extern struct dma_map_ops frv_dma_ops; -static inline -int dma_set_mask(struct device *dev, u64 mask) +static inline struct dma_map_ops *get_dma_ops(struct device *dev) { - if (!dev->dma_mask || !dma_supported(dev, mask)) - return -EIO; - - *dev->dma_mask = mask; - - return 0; + return &frv_dma_ops; } static inline @@ -132,19 +21,4 @@ void dma_cache_sync(struct device *dev, void *vaddr, size_t size, flush_write_buffers(); } -/* Not supported for now */ -static inline int dma_mmap_coherent(struct device *dev, - struct vm_area_struct *vma, void *cpu_addr, - dma_addr_t dma_addr, size_t size) -{ - return -EINVAL; -} - -static inline int dma_get_sgtable(struct device *dev, struct sg_table *sgt, - void *cpu_addr, dma_addr_t dma_addr, - size_t size) -{ - return -EINVAL; -} - #endif /* _ASM_DMA_MAPPING_H */ diff --git a/arch/frv/mb93090-mb00/pci-dma-nommu.c b/arch/frv/mb93090-mb00/pci-dma-nommu.c index 8eeea0d77aad..082be49b5df0 100644 --- a/arch/frv/mb93090-mb00/pci-dma-nommu.c +++ b/arch/frv/mb93090-mb00/pci-dma-nommu.c @@ -34,7 +34,8 @@ struct dma_alloc_record { static DEFINE_SPINLOCK(dma_alloc_lock); static LIST_HEAD(dma_alloc_list); -void *dma_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t *dma_handle, gfp_t gfp) +static void *frv_dma_alloc(struct device *hwdev, size_t size, dma_addr_t *dma_handle, + gfp_t gfp, struct dma_attrs *attrs) { struct dma_alloc_record *new; struct list_head *this = &dma_alloc_list; @@ -84,9 +85,8 @@ void *dma_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t *dma_hand return NULL; } -EXPORT_SYMBOL(dma_alloc_coherent); - -void dma_free_coherent(struct device *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle) +static void frv_dma_free(struct device *hwdev, size_t size, void *vaddr, + dma_addr_t dma_handle, struct dma_attrs *attrs) { struct dma_alloc_record *rec; unsigned long flags; @@ -105,22 +105,9 @@ void dma_free_coherent(struct device *hwdev, size_t size, void *vaddr, dma_addr_ BUG(); } -EXPORT_SYMBOL(dma_free_coherent); - -dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); - - frv_cache_wback_inv((unsigned long) ptr, (unsigned long) ptr + size); - - return virt_to_bus(ptr); -} - -EXPORT_SYMBOL(dma_map_single); - -int dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, - enum dma_data_direction direction) +static int frv_dma_map_sg(struct device *dev, struct scatterlist *sglist, + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs) { int i; struct scatterlist *sg; @@ -135,14 +122,49 @@ int dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, return nents; } -EXPORT_SYMBOL(dma_map_sg); - -dma_addr_t dma_map_page(struct device *dev, struct page *page, unsigned long offset, - size_t size, enum dma_data_direction direction) +static dma_addr_t frv_dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction direction, struct dma_attrs *attrs) { BUG_ON(direction == DMA_NONE); flush_dcache_page(page); return (dma_addr_t) page_to_phys(page) + offset; } -EXPORT_SYMBOL(dma_map_page); +static void frv_dma_sync_single_for_device(struct device *dev, + dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) +{ + flush_write_buffers(); +} + +static void frv_dma_sync_sg_for_device(struct device *dev, + struct scatterlist *sg, int nelems, + enum dma_data_direction direction) +{ + flush_write_buffers(); +} + + +static int frv_dma_supported(struct device *dev, u64 mask) +{ + /* + * we fall back to GFP_DMA when the mask isn't all 1s, + * so we can't guarantee allocations that must be + * within a tighter range than GFP_DMA.. + */ + if (mask < 0x00ffffff) + return 0; + return 1; +} + +struct dma_map_ops frv_dma_ops = { + .alloc = frv_dma_alloc, + .free = frv_dma_free, + .map_page = frv_dma_map_page, + .map_sg = frv_dma_map_sg, + .sync_single_for_device = frv_dma_sync_single_for_device, + .sync_sg_for_device = frv_dma_sync_sg_for_device, + .dma_supported = frv_dma_supported, +}; +EXPORT_SYMBOL(frv_dma_ops); diff --git a/arch/frv/mb93090-mb00/pci-dma.c b/arch/frv/mb93090-mb00/pci-dma.c index 4d1f01dc46e5..316b7b65348d 100644 --- a/arch/frv/mb93090-mb00/pci-dma.c +++ b/arch/frv/mb93090-mb00/pci-dma.c @@ -18,7 +18,9 @@ #include <linux/scatterlist.h> #include <asm/io.h> -void *dma_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t *dma_handle, gfp_t gfp) +static void *frv_dma_alloc(struct device *hwdev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp, + struct dma_attrs *attrs) { void *ret; @@ -29,29 +31,15 @@ void *dma_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t *dma_hand return ret; } -EXPORT_SYMBOL(dma_alloc_coherent); - -void dma_free_coherent(struct device *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle) +static void frv_dma_free(struct device *hwdev, size_t size, void *vaddr, + dma_addr_t dma_handle, struct dma_attrs *attrs) { consistent_free(vaddr); } -EXPORT_SYMBOL(dma_free_coherent); - -dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); - - frv_cache_wback_inv((unsigned long) ptr, (unsigned long) ptr + size); - - return virt_to_bus(ptr); -} - -EXPORT_SYMBOL(dma_map_single); - -int dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, - enum dma_data_direction direction) +static int frv_dma_map_sg(struct device *dev, struct scatterlist *sglist, + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs) { unsigned long dampr2; void *vaddr; @@ -79,14 +67,48 @@ int dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, return nents; } -EXPORT_SYMBOL(dma_map_sg); - -dma_addr_t dma_map_page(struct device *dev, struct page *page, unsigned long offset, - size_t size, enum dma_data_direction direction) +static dma_addr_t frv_dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction direction, struct dma_attrs *attrs) { - BUG_ON(direction == DMA_NONE); flush_dcache_page(page); return (dma_addr_t) page_to_phys(page) + offset; } -EXPORT_SYMBOL(dma_map_page); +static void frv_dma_sync_single_for_device(struct device *dev, + dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) +{ + flush_write_buffers(); +} + +static void frv_dma_sync_sg_for_device(struct device *dev, + struct scatterlist *sg, int nelems, + enum dma_data_direction direction) +{ + flush_write_buffers(); +} + + +static int frv_dma_supported(struct device *dev, u64 mask) +{ + /* + * we fall back to GFP_DMA when the mask isn't all 1s, + * so we can't guarantee allocations that must be + * within a tighter range than GFP_DMA.. + */ + if (mask < 0x00ffffff) + return 0; + return 1; +} + +struct dma_map_ops frv_dma_ops = { + .alloc = frv_dma_alloc, + .free = frv_dma_free, + .map_page = frv_dma_map_page, + .map_sg = frv_dma_map_sg, + .sync_single_for_device = frv_dma_sync_single_for_device, + .sync_sg_for_device = frv_dma_sync_sg_for_device, + .dma_supported = frv_dma_supported, +}; +EXPORT_SYMBOL(frv_dma_ops); diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig index 2e20333cbce9..8c7c82586da0 100644 --- a/arch/h8300/Kconfig +++ b/arch/h8300/Kconfig @@ -15,7 +15,6 @@ config H8300 select OF_IRQ select OF_EARLY_FLATTREE select HAVE_MEMBLOCK - select HAVE_DMA_ATTRS select CLKSRC_OF select H8300_TMR8 diff --git a/arch/h8300/include/asm/dma-mapping.h b/arch/h8300/include/asm/dma-mapping.h index d9b5b806afe6..7ac7fadffed0 100644 --- a/arch/h8300/include/asm/dma-mapping.h +++ b/arch/h8300/include/asm/dma-mapping.h @@ -8,6 +8,4 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) return &h8300_dma_map_ops; } -#include <asm-generic/dma-mapping-common.h> - #endif diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig index 4dc89d1f9c48..57298e7b4867 100644 --- a/arch/hexagon/Kconfig +++ b/arch/hexagon/Kconfig @@ -27,7 +27,6 @@ config HEXAGON select GENERIC_CLOCKEVENTS_BROADCAST select MODULES_USE_ELF_RELA select GENERIC_CPU_DEVICES - select HAVE_DMA_ATTRS ---help--- Qualcomm Hexagon is a processor architecture designed for high performance and low power across a wide variety of applications. diff --git a/arch/hexagon/include/asm/dma-mapping.h b/arch/hexagon/include/asm/dma-mapping.h index 268fde8a4575..aa6203464520 100644 --- a/arch/hexagon/include/asm/dma-mapping.h +++ b/arch/hexagon/include/asm/dma-mapping.h @@ -49,8 +49,6 @@ 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); -#include <asm-generic/dma-mapping-common.h> - static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) { if (!dev->dma_mask) diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index eb0249e37981..fb0515eb639b 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -25,7 +25,6 @@ config IA64 select HAVE_FTRACE_MCOUNT_RECORD select HAVE_DYNAMIC_FTRACE if (!ITANIUM) select HAVE_FUNCTION_TRACER - select HAVE_DMA_ATTRS select TTY select HAVE_ARCH_TRACEHOOK select HAVE_DMA_API_DEBUG diff --git a/arch/ia64/include/asm/dma-mapping.h b/arch/ia64/include/asm/dma-mapping.h index 9beccf8010bd..d472805edfa9 100644 --- a/arch/ia64/include/asm/dma-mapping.h +++ b/arch/ia64/include/asm/dma-mapping.h @@ -25,8 +25,6 @@ extern void machvec_dma_sync_sg(struct device *, struct scatterlist *, int, #define get_dma_ops(dev) platform_dma_get_ops(dev) -#include <asm-generic/dma-mapping-common.h> - static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) { if (!dev->dma_mask) diff --git a/arch/m68k/include/asm/dma-mapping.h b/arch/m68k/include/asm/dma-mapping.h index 05aa53594d49..96c536194287 100644 --- a/arch/m68k/include/asm/dma-mapping.h +++ b/arch/m68k/include/asm/dma-mapping.h @@ -1,123 +1,17 @@ #ifndef _M68K_DMA_MAPPING_H #define _M68K_DMA_MAPPING_H -#include <asm/cache.h> +extern struct dma_map_ops m68k_dma_ops; -struct scatterlist; - -static inline int dma_supported(struct device *dev, u64 mask) -{ - return 1; -} - -static inline int dma_set_mask(struct device *dev, u64 mask) -{ - return 0; -} - -extern void *dma_alloc_coherent(struct device *, size_t, - dma_addr_t *, gfp_t); -extern void dma_free_coherent(struct device *, size_t, - void *, dma_addr_t); - -static inline void *dma_alloc_attrs(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag, - struct dma_attrs *attrs) -{ - /* attrs is not supported and ignored */ - return dma_alloc_coherent(dev, size, dma_handle, flag); -} - -static inline void dma_free_attrs(struct device *dev, size_t size, - void *cpu_addr, dma_addr_t dma_handle, - struct dma_attrs *attrs) +static inline struct dma_map_ops *get_dma_ops(struct device *dev) { - /* attrs is not supported and ignored */ - dma_free_coherent(dev, size, cpu_addr, dma_handle); + return &m68k_dma_ops; } -static inline void *dma_alloc_noncoherent(struct device *dev, size_t size, - dma_addr_t *handle, gfp_t flag) -{ - return dma_alloc_coherent(dev, size, handle, flag); -} -static inline void dma_free_noncoherent(struct device *dev, size_t size, - void *addr, dma_addr_t handle) -{ - dma_free_coherent(dev, size, addr, handle); -} static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, enum dma_data_direction dir) { /* we use coherent allocation, so not much to do here. */ } -extern dma_addr_t dma_map_single(struct device *, void *, size_t, - enum dma_data_direction); -static inline void dma_unmap_single(struct device *dev, dma_addr_t addr, - size_t size, enum dma_data_direction dir) -{ -} - -extern dma_addr_t dma_map_page(struct device *, struct page *, - unsigned long, size_t size, - enum dma_data_direction); -static inline void dma_unmap_page(struct device *dev, dma_addr_t address, - size_t size, enum dma_data_direction dir) -{ -} - -extern int dma_map_sg(struct device *, struct scatterlist *, int, - enum dma_data_direction); -static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sg, - int nhwentries, enum dma_data_direction dir) -{ -} - -extern void dma_sync_single_for_device(struct device *, dma_addr_t, size_t, - enum dma_data_direction); -extern void dma_sync_sg_for_device(struct device *, struct scatterlist *, int, - enum dma_data_direction); - -static inline void dma_sync_single_range_for_device(struct device *dev, - dma_addr_t dma_handle, unsigned long offset, size_t size, - enum dma_data_direction direction) -{ - /* just sync everything for now */ - dma_sync_single_for_device(dev, dma_handle, offset + size, direction); -} - -static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir) -{ -} - -static inline void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction dir) -{ -} - -static inline 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) -{ - /* just sync everything for now */ - dma_sync_single_for_cpu(dev, dma_handle, offset + size, direction); -} - -static inline int dma_mapping_error(struct device *dev, dma_addr_t handle) -{ - return 0; -} - -/* drivers/base/dma-mapping.c */ -extern int dma_common_mmap(struct device *dev, struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t dma_addr, size_t size); -extern int dma_common_get_sgtable(struct device *dev, struct sg_table *sgt, - void *cpu_addr, dma_addr_t dma_addr, - size_t size); - -#define dma_mmap_coherent(d, v, c, h, s) dma_common_mmap(d, v, c, h, s) -#define dma_get_sgtable(d, t, v, h, s) dma_common_get_sgtable(d, t, v, h, s) - #endif /* _M68K_DMA_MAPPING_H */ diff --git a/arch/m68k/kernel/dma.c b/arch/m68k/kernel/dma.c index 564665f9af30..cbc78b4117b5 100644 --- a/arch/m68k/kernel/dma.c +++ b/arch/m68k/kernel/dma.c @@ -18,8 +18,8 @@ #if defined(CONFIG_MMU) && !defined(CONFIG_COLDFIRE) -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *handle, gfp_t flag) +static void *m68k_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, + gfp_t flag, struct dma_attrs *attrs) { struct page *page, **map; pgprot_t pgprot; @@ -61,8 +61,8 @@ void *dma_alloc_coherent(struct device *dev, size_t size, return addr; } -void dma_free_coherent(struct device *dev, size_t size, - void *addr, dma_addr_t handle) +static void m68k_dma_free(struct device *dev, size_t size, void *addr, + dma_addr_t handle, struct dma_attrs *attrs) { pr_debug("dma_free_coherent: %p, %x\n", addr, handle); vfree(addr); @@ -72,8 +72,8 @@ void dma_free_coherent(struct device *dev, size_t size, #include <asm/cacheflush.h> -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp) +static void *m68k_dma_alloc(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp, struct dma_attrs *attrs) { void *ret; /* ignore region specifiers */ @@ -90,19 +90,16 @@ void *dma_alloc_coherent(struct device *dev, size_t size, return ret; } -void dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle) +static void m68k_dma_free(struct device *dev, size_t size, void *vaddr, + dma_addr_t dma_handle, struct dma_attrs *attrs) { free_pages((unsigned long)vaddr, get_order(size)); } #endif /* CONFIG_MMU && !CONFIG_COLDFIRE */ -EXPORT_SYMBOL(dma_alloc_coherent); -EXPORT_SYMBOL(dma_free_coherent); - -void dma_sync_single_for_device(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir) +static void m68k_dma_sync_single_for_device(struct device *dev, + dma_addr_t handle, size_t size, enum dma_data_direction dir) { switch (dir) { case DMA_BIDIRECTIONAL: @@ -118,10 +115,9 @@ void dma_sync_single_for_device(struct device *dev, dma_addr_t handle, break; } } -EXPORT_SYMBOL(dma_sync_single_for_device); -void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sglist, - int nents, enum dma_data_direction dir) +static void m68k_dma_sync_sg_for_device(struct device *dev, + struct scatterlist *sglist, int nents, enum dma_data_direction dir) { int i; struct scatterlist *sg; @@ -131,31 +127,19 @@ void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sglist, dir); } } -EXPORT_SYMBOL(dma_sync_sg_for_device); - -dma_addr_t dma_map_single(struct device *dev, void *addr, size_t size, - enum dma_data_direction dir) -{ - dma_addr_t handle = virt_to_bus(addr); - - dma_sync_single_for_device(dev, handle, size, dir); - return handle; -} -EXPORT_SYMBOL(dma_map_single); -dma_addr_t dma_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction dir) +static dma_addr_t m68k_dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, enum dma_data_direction dir, + struct dma_attrs *attrs) { dma_addr_t handle = page_to_phys(page) + offset; dma_sync_single_for_device(dev, handle, size, dir); return handle; } -EXPORT_SYMBOL(dma_map_page); -int dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, - enum dma_data_direction dir) +static int m68k_dma_map_sg(struct device *dev, struct scatterlist *sglist, + int nents, enum dma_data_direction dir, struct dma_attrs *attrs) { int i; struct scatterlist *sg; @@ -167,4 +151,13 @@ int dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, } return nents; } -EXPORT_SYMBOL(dma_map_sg); + +struct dma_map_ops m68k_dma_ops = { + .alloc = m68k_dma_alloc, + .free = m68k_dma_free, + .map_page = m68k_dma_map_page, + .map_sg = m68k_dma_map_sg, + .sync_single_for_device = m68k_dma_sync_single_for_device, + .sync_sg_for_device = m68k_dma_sync_sg_for_device, +}; +EXPORT_SYMBOL(m68k_dma_ops); diff --git a/arch/metag/include/asm/dma-mapping.h b/arch/metag/include/asm/dma-mapping.h index eb5cdec94be0..27af5d479ce6 100644 --- a/arch/metag/include/asm/dma-mapping.h +++ b/arch/metag/include/asm/dma-mapping.h @@ -1,177 +1,11 @@ #ifndef _ASM_METAG_DMA_MAPPING_H #define _ASM_METAG_DMA_MAPPING_H -#include <linux/mm.h> +extern struct dma_map_ops metag_dma_ops; -#include <asm/cache.h> -#include <asm/io.h> -#include <linux/scatterlist.h> -#include <asm/bug.h> - -#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) - -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag); - -void dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle); - -void dma_sync_for_device(void *vaddr, size_t size, int dma_direction); -void dma_sync_for_cpu(void *vaddr, size_t size, int dma_direction); - -int dma_mmap_coherent(struct device *dev, struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t dma_addr, size_t size); - -int dma_mmap_writecombine(struct device *dev, struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t dma_addr, size_t size); - -static inline dma_addr_t -dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(!valid_dma_direction(direction)); - WARN_ON(size == 0); - dma_sync_for_device(ptr, size, direction); - return virt_to_phys(ptr); -} - -static inline void -dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(!valid_dma_direction(direction)); - dma_sync_for_cpu(phys_to_virt(dma_addr), size, direction); -} - -static inline int -dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, - enum dma_data_direction direction) -{ - struct scatterlist *sg; - int i; - - BUG_ON(!valid_dma_direction(direction)); - WARN_ON(nents == 0 || sglist[0].length == 0); - - for_each_sg(sglist, sg, nents, i) { - BUG_ON(!sg_page(sg)); - - sg->dma_address = sg_phys(sg); - dma_sync_for_device(sg_virt(sg), sg->length, direction); - } - - return nents; -} - -static inline dma_addr_t -dma_map_page(struct device *dev, struct page *page, unsigned long offset, - size_t size, enum dma_data_direction direction) -{ - BUG_ON(!valid_dma_direction(direction)); - dma_sync_for_device((void *)(page_to_phys(page) + offset), size, - direction); - return page_to_phys(page) + offset; -} - -static inline void -dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(!valid_dma_direction(direction)); - dma_sync_for_cpu(phys_to_virt(dma_address), size, direction); -} - - -static inline void -dma_unmap_sg(struct device *dev, struct scatterlist *sglist, int nhwentries, - enum dma_data_direction direction) -{ - struct scatterlist *sg; - int i; - - BUG_ON(!valid_dma_direction(direction)); - WARN_ON(nhwentries == 0 || sglist[0].length == 0); - - for_each_sg(sglist, sg, nhwentries, i) { - BUG_ON(!sg_page(sg)); - - sg->dma_address = sg_phys(sg); - dma_sync_for_cpu(sg_virt(sg), sg->length, direction); - } -} - -static inline void -dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size, - enum dma_data_direction direction) -{ - dma_sync_for_cpu(phys_to_virt(dma_handle), size, direction); -} - -static inline void -dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, - size_t size, enum dma_data_direction direction) -{ - dma_sync_for_device(phys_to_virt(dma_handle), size, direction); -} - -static inline 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) -{ - dma_sync_for_cpu(phys_to_virt(dma_handle)+offset, size, - direction); -} - -static inline void -dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ - dma_sync_for_device(phys_to_virt(dma_handle)+offset, size, - direction); -} - -static inline void -dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sglist, int nelems, - enum dma_data_direction direction) -{ - int i; - struct scatterlist *sg; - - for_each_sg(sglist, sg, nelems, i) - dma_sync_for_cpu(sg_virt(sg), sg->length, direction); -} - -static inline void -dma_sync_sg_for_device(struct device *dev, struct scatterlist *sglist, - int nelems, enum dma_data_direction direction) -{ - int i; - struct scatterlist *sg; - - for_each_sg(sglist, sg, nelems, i) - dma_sync_for_device(sg_virt(sg), sg->length, direction); -} - -static inline int -dma_mapping_error(struct device *dev, dma_addr_t dma_addr) +static inline struct dma_map_ops *get_dma_ops(struct device *dev) { - return 0; -} - -#define dma_supported(dev, mask) (1) - -static inline int -dma_set_mask(struct device *dev, u64 mask) -{ - if (!dev->dma_mask || !dma_supported(dev, mask)) - return -EIO; - - *dev->dma_mask = mask; - - return 0; + return &metag_dma_ops; } /* @@ -184,11 +18,4 @@ dma_cache_sync(struct device *dev, void *vaddr, size_t size, { } -/* drivers/base/dma-mapping.c */ -extern int dma_common_get_sgtable(struct device *dev, struct sg_table *sgt, - void *cpu_addr, dma_addr_t dma_addr, - size_t size); - -#define dma_get_sgtable(d, t, v, h, s) dma_common_get_sgtable(d, t, v, h, s) - #endif diff --git a/arch/metag/kernel/dma.c b/arch/metag/kernel/dma.c index c700d625067a..e12368d02155 100644 --- a/arch/metag/kernel/dma.c +++ b/arch/metag/kernel/dma.c @@ -171,8 +171,8 @@ out: * Allocate DMA-coherent memory space and return both the kernel remapped * virtual and bus address for that space. */ -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *handle, gfp_t gfp) +static void *metag_dma_alloc(struct device *dev, size_t size, + dma_addr_t *handle, gfp_t gfp, struct dma_attrs *attrs) { struct page *page; struct metag_vm_region *c; @@ -263,13 +263,12 @@ void *dma_alloc_coherent(struct device *dev, size_t size, no_page: return NULL; } -EXPORT_SYMBOL(dma_alloc_coherent); /* * free a page as defined by the above mapping. */ -void dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle) +static void metag_dma_free(struct device *dev, size_t size, void *vaddr, + dma_addr_t dma_handle, struct dma_attrs *attrs) { struct metag_vm_region *c; unsigned long flags, addr; @@ -329,16 +328,19 @@ no_area: __func__, vaddr); dump_stack(); } -EXPORT_SYMBOL(dma_free_coherent); - -static int dma_mmap(struct device *dev, struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t dma_addr, size_t size) +static int metag_dma_mmap(struct device *dev, struct vm_area_struct *vma, + void *cpu_addr, dma_addr_t dma_addr, size_t size, + struct dma_attrs *attrs) { - int ret = -ENXIO; - unsigned long flags, user_size, kern_size; struct metag_vm_region *c; + int ret = -ENXIO; + + if (dma_get_attr(DMA_ATTR_WRITE_COMBINE, attrs)) + vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); + else + vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); user_size = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; @@ -364,25 +366,6 @@ static int dma_mmap(struct device *dev, struct vm_area_struct *vma, return ret; } -int dma_mmap_coherent(struct device *dev, struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t dma_addr, size_t size) -{ - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); - return dma_mmap(dev, vma, cpu_addr, dma_addr, size); -} -EXPORT_SYMBOL(dma_mmap_coherent); - -int dma_mmap_writecombine(struct device *dev, struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t dma_addr, size_t size) -{ - vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); - return dma_mmap(dev, vma, cpu_addr, dma_addr, size); -} -EXPORT_SYMBOL(dma_mmap_writecombine); - - - - /* * Initialise the consistent memory allocation. */ @@ -423,7 +406,7 @@ early_initcall(dma_alloc_init); /* * make an area consistent to devices. */ -void dma_sync_for_device(void *vaddr, size_t size, int dma_direction) +static void dma_sync_for_device(void *vaddr, size_t size, int dma_direction) { /* * Ensure any writes get through the write combiner. This is necessary @@ -465,12 +448,11 @@ void dma_sync_for_device(void *vaddr, size_t size, int dma_direction) wmb(); } -EXPORT_SYMBOL(dma_sync_for_device); /* * make an area consistent to the core. */ -void dma_sync_for_cpu(void *vaddr, size_t size, int dma_direction) +static void dma_sync_for_cpu(void *vaddr, size_t size, int dma_direction) { /* * Hardware L2 cache prefetch doesn't occur across 4K physical @@ -497,4 +479,100 @@ void dma_sync_for_cpu(void *vaddr, size_t size, int dma_direction) rmb(); } -EXPORT_SYMBOL(dma_sync_for_cpu); + +static dma_addr_t metag_dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction direction, struct dma_attrs *attrs) +{ + dma_sync_for_device((void *)(page_to_phys(page) + offset), size, + direction); + return page_to_phys(page) + offset; +} + +static void metag_dma_unmap_page(struct device *dev, dma_addr_t dma_address, + size_t size, enum dma_data_direction direction, + struct dma_attrs *attrs) +{ + dma_sync_for_cpu(phys_to_virt(dma_address), size, direction); +} + +static int metag_dma_map_sg(struct device *dev, struct scatterlist *sglist, + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs) +{ + struct scatterlist *sg; + int i; + + for_each_sg(sglist, sg, nents, i) { + BUG_ON(!sg_page(sg)); + + sg->dma_address = sg_phys(sg); + dma_sync_for_device(sg_virt(sg), sg->length, direction); + } + + return nents; +} + + +static void metag_dma_unmap_sg(struct device *dev, struct scatterlist *sglist, + int nhwentries, enum dma_data_direction direction, + struct dma_attrs *attrs) +{ + struct scatterlist *sg; + int i; + + for_each_sg(sglist, sg, nhwentries, i) { + BUG_ON(!sg_page(sg)); + + sg->dma_address = sg_phys(sg); + dma_sync_for_cpu(sg_virt(sg), sg->length, direction); + } +} + +static void metag_dma_sync_single_for_cpu(struct device *dev, + dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) +{ + dma_sync_for_cpu(phys_to_virt(dma_handle), size, direction); +} + +static void metag_dma_sync_single_for_device(struct device *dev, + dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) +{ + dma_sync_for_device(phys_to_virt(dma_handle), size, direction); +} + +static void metag_dma_sync_sg_for_cpu(struct device *dev, + struct scatterlist *sglist, int nelems, + enum dma_data_direction direction) +{ + int i; + struct scatterlist *sg; + + for_each_sg(sglist, sg, nelems, i) + dma_sync_for_cpu(sg_virt(sg), sg->length, direction); +} + +static void metag_dma_sync_sg_for_device(struct device *dev, + struct scatterlist *sglist, int nelems, + enum dma_data_direction direction) +{ + int i; + struct scatterlist *sg; + + for_each_sg(sglist, sg, nelems, i) + dma_sync_for_device(sg_virt(sg), sg->length, direction); +} + +struct dma_map_ops metag_dma_ops = { + .alloc = metag_dma_alloc, + .free = metag_dma_free, + .map_page = metag_dma_map_page, + .map_sg = metag_dma_map_sg, + .sync_single_for_device = metag_dma_sync_single_for_device, + .sync_single_for_cpu = metag_dma_sync_single_for_cpu, + .sync_sg_for_cpu = metag_dma_sync_sg_for_cpu, + .mmap = metag_dma_mmap, +}; +EXPORT_SYMBOL(metag_dma_ops); diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index 5ecd0287a874..53b69deceb99 100644 --- a/arch/microblaze/Kconfig +++ b/arch/microblaze/Kconfig @@ -19,7 +19,6 @@ config MICROBLAZE select HAVE_ARCH_KGDB select HAVE_DEBUG_KMEMLEAK select HAVE_DMA_API_DEBUG - select HAVE_DMA_ATTRS select HAVE_DYNAMIC_FTRACE select HAVE_FTRACE_MCOUNT_RECORD select HAVE_FUNCTION_GRAPH_TRACER diff --git a/arch/microblaze/include/asm/dma-mapping.h b/arch/microblaze/include/asm/dma-mapping.h index 24b12970c9cf..1884783d15c0 100644 --- a/arch/microblaze/include/asm/dma-mapping.h +++ b/arch/microblaze/include/asm/dma-mapping.h @@ -44,8 +44,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) return &dma_direct_ops; } -#include <asm-generic/dma-mapping-common.h> - static inline void __dma_sync(unsigned long paddr, size_t size, enum dma_data_direction direction) { diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 71683a853372..fbf3f6670b69 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -31,7 +31,6 @@ config MIPS select RTC_LIB if !MACH_LOONGSON64 select GENERIC_ATOMIC64 if !64BIT select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE - select HAVE_DMA_ATTRS select HAVE_DMA_CONTIGUOUS select HAVE_DMA_API_DEBUG select GENERIC_IRQ_PROBE diff --git a/arch/mips/include/asm/dma-mapping.h b/arch/mips/include/asm/dma-mapping.h index e604f760c4a0..12fa79e2f1b4 100644 --- a/arch/mips/include/asm/dma-mapping.h +++ b/arch/mips/include/asm/dma-mapping.h @@ -29,8 +29,6 @@ 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) {} -#include <asm-generic/dma-mapping-common.h> - extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size, enum dma_data_direction direction); diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig index 4434b54e1d87..000745b24cee 100644 --- a/arch/mn10300/Kconfig +++ b/arch/mn10300/Kconfig @@ -13,6 +13,7 @@ config MN10300 select OLD_SIGSUSPEND3 select OLD_SIGACTION select HAVE_DEBUG_STACKOVERFLOW + select ARCH_NO_COHERENT_DMA_MMAP config AM33_2 def_bool n diff --git a/arch/mn10300/include/asm/dma-mapping.h b/arch/mn10300/include/asm/dma-mapping.h index a18abfc558eb..1dcd44757f32 100644 --- a/arch/mn10300/include/asm/dma-mapping.h +++ b/arch/mn10300/include/asm/dma-mapping.h @@ -11,154 +11,14 @@ #ifndef _ASM_DMA_MAPPING_H #define _ASM_DMA_MAPPING_H -#include <linux/mm.h> -#include <linux/scatterlist.h> - #include <asm/cache.h> #include <asm/io.h> -/* - * See Documentation/DMA-API.txt for the description of how the - * following DMA API should work. - */ - -extern void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, int flag); - -extern void dma_free_coherent(struct device *dev, size_t size, - void *vaddr, 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)) - -static inline -dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); - mn10300_dcache_flush_inv(); - return virt_to_bus(ptr); -} - -static inline -void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); -} - -static inline -int dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, - enum dma_data_direction direction) -{ - struct scatterlist *sg; - int i; - - BUG_ON(!valid_dma_direction(direction)); - WARN_ON(nents == 0 || sglist[0].length == 0); - - for_each_sg(sglist, sg, nents, i) { - BUG_ON(!sg_page(sg)); - - sg->dma_address = sg_phys(sg); - } +extern struct dma_map_ops mn10300_dma_ops; - mn10300_dcache_flush_inv(); - return nents; -} - -static inline -void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, - enum dma_data_direction direction) -{ - BUG_ON(!valid_dma_direction(direction)); -} - -static inline -dma_addr_t dma_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); - return page_to_bus(page) + offset; -} - -static inline -void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); -} - -static inline -void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, - size_t size, enum dma_data_direction direction) +static inline struct dma_map_ops *get_dma_ops(struct device *dev) { -} - -static inline -void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, - size_t size, enum dma_data_direction direction) -{ - mn10300_dcache_flush_inv(); -} - -static inline -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) -{ -} - -static inline void -dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ - mn10300_dcache_flush_inv(); -} - - -static inline -void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, - int nelems, enum dma_data_direction direction) -{ -} - -static inline -void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, - int nelems, enum dma_data_direction direction) -{ - mn10300_dcache_flush_inv(); -} - -static inline -int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - return 0; -} - -static inline -int dma_supported(struct device *dev, u64 mask) -{ - /* - * we fall back to GFP_DMA when the mask isn't all 1s, so we can't - * guarantee allocations that must be within a tighter range than - * GFP_DMA - */ - if (mask < 0x00ffffff) - return 0; - return 1; -} - -static inline -int dma_set_mask(struct device *dev, u64 mask) -{ - if (!dev->dma_mask || !dma_supported(dev, mask)) - return -EIO; - - *dev->dma_mask = mask; - return 0; + return &mn10300_dma_ops; } static inline @@ -168,19 +28,4 @@ void dma_cache_sync(void *vaddr, size_t size, mn10300_dcache_flush_inv(); } -/* Not supported for now */ -static inline int dma_mmap_coherent(struct device *dev, - struct vm_area_struct *vma, void *cpu_addr, - dma_addr_t dma_addr, size_t size) -{ - return -EINVAL; -} - -static inline int dma_get_sgtable(struct device *dev, struct sg_table *sgt, - void *cpu_addr, dma_addr_t dma_addr, - size_t size) -{ - return -EINVAL; -} - #endif diff --git a/arch/mn10300/mm/dma-alloc.c b/arch/mn10300/mm/dma-alloc.c index e244ebe637e1..8842394cb49a 100644 --- a/arch/mn10300/mm/dma-alloc.c +++ b/arch/mn10300/mm/dma-alloc.c @@ -20,8 +20,8 @@ static unsigned long pci_sram_allocated = 0xbc000000; -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, int gfp) +static void *mn10300_dma_alloc(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp, struct dma_attrs *attrs) { unsigned long addr; void *ret; @@ -61,10 +61,9 @@ done: printk("dma_alloc_coherent() = %p [%x]\n", ret, *dma_handle); return ret; } -EXPORT_SYMBOL(dma_alloc_coherent); -void dma_free_coherent(struct device *dev, size_t size, void *vaddr, - dma_addr_t dma_handle) +static void mn10300_dma_free(struct device *dev, size_t size, void *vaddr, + dma_addr_t dma_handle, struct dma_attrs *attrs) { unsigned long addr = (unsigned long) vaddr & ~0x20000000; @@ -73,4 +72,60 @@ void dma_free_coherent(struct device *dev, size_t size, void *vaddr, free_pages(addr, get_order(size)); } -EXPORT_SYMBOL(dma_free_coherent); + +static int mn10300_dma_map_sg(struct device *dev, struct scatterlist *sglist, + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs) +{ + struct scatterlist *sg; + int i; + + for_each_sg(sglist, sg, nents, i) { + BUG_ON(!sg_page(sg)); + + sg->dma_address = sg_phys(sg); + } + + mn10300_dcache_flush_inv(); + return nents; +} + +static dma_addr_t mn10300_dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction direction, struct dma_attrs *attrs) +{ + return page_to_bus(page) + offset; +} + +static void mn10300_dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, + size_t size, enum dma_data_direction direction) +{ + mn10300_dcache_flush_inv(); +} + +static void mn10300_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, + int nelems, enum dma_data_direction direction) +{ + mn10300_dcache_flush_inv(); +} + +static int mn10300_dma_supported(struct device *dev, u64 mask) +{ + /* + * we fall back to GFP_DMA when the mask isn't all 1s, so we can't + * guarantee allocations that must be within a tighter range than + * GFP_DMA + */ + if (mask < 0x00ffffff) + return 0; + return 1; +} + +struct dma_map_ops mn10300_dma_ops = { + .alloc = mn10300_dma_alloc, + .free = mn10300_dma_free, + .map_page = mn10300_dma_map_page, + .map_sg = mn10300_dma_map_sg, + .sync_single_for_device = mn10300_dma_sync_single_for_device, + .sync_sg_for_device = mn10300_dma_sync_sg_for_device, +}; diff --git a/arch/nios2/include/asm/dma-mapping.h b/arch/nios2/include/asm/dma-mapping.h index b5567233f7f1..bec8ac8e6ad2 100644 --- a/arch/nios2/include/asm/dma-mapping.h +++ b/arch/nios2/include/asm/dma-mapping.h @@ -10,131 +10,20 @@ #ifndef _ASM_NIOS2_DMA_MAPPING_H #define _ASM_NIOS2_DMA_MAPPING_H -#include <linux/scatterlist.h> -#include <linux/cache.h> -#include <asm/cacheflush.h> +extern struct dma_map_ops nios2_dma_ops; -static inline void __dma_sync_for_device(void *vaddr, size_t size, - enum dma_data_direction direction) +static inline struct dma_map_ops *get_dma_ops(struct device *dev) { - switch (direction) { - case DMA_FROM_DEVICE: - invalidate_dcache_range((unsigned long)vaddr, - (unsigned long)(vaddr + size)); - break; - case DMA_TO_DEVICE: - /* - * We just need to flush the caches here , but Nios2 flush - * instruction will do both writeback and invalidate. - */ - case DMA_BIDIRECTIONAL: /* flush and invalidate */ - flush_dcache_range((unsigned long)vaddr, - (unsigned long)(vaddr + size)); - break; - default: - BUG(); - } -} - -static inline void __dma_sync_for_cpu(void *vaddr, size_t size, - enum dma_data_direction direction) -{ - switch (direction) { - case DMA_BIDIRECTIONAL: - case DMA_FROM_DEVICE: - invalidate_dcache_range((unsigned long)vaddr, - (unsigned long)(vaddr + size)); - break; - case DMA_TO_DEVICE: - break; - default: - BUG(); - } -} - -#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) - -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag); - -void dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle); - -static inline dma_addr_t dma_map_single(struct device *dev, void *ptr, - size_t size, - enum dma_data_direction direction) -{ - BUG_ON(!valid_dma_direction(direction)); - __dma_sync_for_device(ptr, size, direction); - return virt_to_phys(ptr); -} - -static inline 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 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_unmap_sg(struct device *dev, struct scatterlist *sg, - int nhwentries, 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_for_device(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_single_range_for_device(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); -extern void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, - int nelems, enum dma_data_direction direction); - -static inline int dma_supported(struct device *dev, u64 mask) -{ - return 1; -} - -static inline int dma_set_mask(struct device *dev, u64 mask) -{ - if (!dev->dma_mask || !dma_supported(dev, mask)) - return -EIO; - - *dev->dma_mask = mask; - - return 0; -} - -static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - return 0; + return &nios2_dma_ops; } /* -* dma_alloc_noncoherent() returns non-cacheable memory, so there's no need to -* do any flushing here. -*/ + * dma_alloc_noncoherent() returns non-cacheable memory, so there's no need to + * do any flushing here. + */ static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, enum dma_data_direction direction) { } -/* drivers/base/dma-mapping.c */ -extern int dma_common_mmap(struct device *dev, struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t dma_addr, size_t size); -extern int dma_common_get_sgtable(struct device *dev, struct sg_table *sgt, - void *cpu_addr, dma_addr_t dma_addr, - size_t size); - -#define dma_mmap_coherent(d, v, c, h, s) dma_common_mmap(d, v, c, h, s) -#define dma_get_sgtable(d, t, v, h, s) dma_common_get_sgtable(d, t, v, h, s) - #endif /* _ASM_NIOS2_DMA_MAPPING_H */ diff --git a/arch/nios2/mm/dma-mapping.c b/arch/nios2/mm/dma-mapping.c index ac5da7594f0b..90422c367ed3 100644 --- a/arch/nios2/mm/dma-mapping.c +++ b/arch/nios2/mm/dma-mapping.c @@ -20,9 +20,46 @@ #include <linux/cache.h> #include <asm/cacheflush.h> +static inline void __dma_sync_for_device(void *vaddr, size_t size, + enum dma_data_direction direction) +{ + switch (direction) { + case DMA_FROM_DEVICE: + invalidate_dcache_range((unsigned long)vaddr, + (unsigned long)(vaddr + size)); + break; + case DMA_TO_DEVICE: + /* + * We just need to flush the caches here , but Nios2 flush + * instruction will do both writeback and invalidate. + */ + case DMA_BIDIRECTIONAL: /* flush and invalidate */ + flush_dcache_range((unsigned long)vaddr, + (unsigned long)(vaddr + size)); + break; + default: + BUG(); + } +} -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp) +static inline void __dma_sync_for_cpu(void *vaddr, size_t size, + enum dma_data_direction direction) +{ + switch (direction) { + case DMA_BIDIRECTIONAL: + case DMA_FROM_DEVICE: + invalidate_dcache_range((unsigned long)vaddr, + (unsigned long)(vaddr + size)); + break; + case DMA_TO_DEVICE: + break; + default: + BUG(); + } +} + +static void *nios2_dma_alloc(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp, struct dma_attrs *attrs) { void *ret; @@ -45,24 +82,21 @@ void *dma_alloc_coherent(struct device *dev, size_t size, return ret; } -EXPORT_SYMBOL(dma_alloc_coherent); -void dma_free_coherent(struct device *dev, size_t size, void *vaddr, - dma_addr_t dma_handle) +static void nios2_dma_free(struct device *dev, size_t size, void *vaddr, + dma_addr_t dma_handle, struct dma_attrs *attrs) { unsigned long addr = (unsigned long) CAC_ADDR((unsigned long) vaddr); free_pages(addr, get_order(size)); } -EXPORT_SYMBOL(dma_free_coherent); -int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction direction) +static int nios2_dma_map_sg(struct device *dev, struct scatterlist *sg, + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs) { int i; - BUG_ON(!valid_dma_direction(direction)); - for_each_sg(sg, sg, nents, i) { void *addr; @@ -75,40 +109,32 @@ int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, return nents; } -EXPORT_SYMBOL(dma_map_sg); -dma_addr_t dma_map_page(struct device *dev, struct page *page, +static dma_addr_t nios2_dma_map_page(struct device *dev, struct page *page, unsigned long offset, size_t size, - enum dma_data_direction direction) + enum dma_data_direction direction, + struct dma_attrs *attrs) { - void *addr; - - BUG_ON(!valid_dma_direction(direction)); + void *addr = page_address(page) + offset; - addr = page_address(page) + offset; __dma_sync_for_device(addr, size, direction); - return page_to_phys(page) + offset; } -EXPORT_SYMBOL(dma_map_page); -void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, - enum dma_data_direction direction) +static void nios2_dma_unmap_page(struct device *dev, dma_addr_t dma_address, + size_t size, enum dma_data_direction direction, + struct dma_attrs *attrs) { - BUG_ON(!valid_dma_direction(direction)); - __dma_sync_for_cpu(phys_to_virt(dma_address), size, direction); } -EXPORT_SYMBOL(dma_unmap_page); -void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, - enum dma_data_direction direction) +static void nios2_dma_unmap_sg(struct device *dev, struct scatterlist *sg, + int nhwentries, enum dma_data_direction direction, + struct dma_attrs *attrs) { void *addr; int i; - BUG_ON(!valid_dma_direction(direction)); - if (direction == DMA_TO_DEVICE) return; @@ -118,69 +144,54 @@ void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, __dma_sync_for_cpu(addr, sg->length, direction); } } -EXPORT_SYMBOL(dma_unmap_sg); - -void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, - size_t size, enum dma_data_direction direction) -{ - BUG_ON(!valid_dma_direction(direction)); - __dma_sync_for_cpu(phys_to_virt(dma_handle), size, direction); -} -EXPORT_SYMBOL(dma_sync_single_for_cpu); - -void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, - size_t size, enum dma_data_direction direction) -{ - BUG_ON(!valid_dma_direction(direction)); - - __dma_sync_for_device(phys_to_virt(dma_handle), size, direction); -} -EXPORT_SYMBOL(dma_sync_single_for_device); - -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) +static void nios2_dma_sync_single_for_cpu(struct device *dev, + dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) { - BUG_ON(!valid_dma_direction(direction)); - __dma_sync_for_cpu(phys_to_virt(dma_handle), size, direction); } -EXPORT_SYMBOL(dma_sync_single_range_for_cpu); -void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle, - unsigned long offset, size_t size, - enum dma_data_direction direction) +static void nios2_dma_sync_single_for_device(struct device *dev, + dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) { - BUG_ON(!valid_dma_direction(direction)); - __dma_sync_for_device(phys_to_virt(dma_handle), size, direction); } -EXPORT_SYMBOL(dma_sync_single_range_for_device); -void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems, - enum dma_data_direction direction) +static void nios2_dma_sync_sg_for_cpu(struct device *dev, + struct scatterlist *sg, int nelems, + enum dma_data_direction direction) { int i; - BUG_ON(!valid_dma_direction(direction)); - /* Make sure that gcc doesn't leave the empty loop body. */ for_each_sg(sg, sg, nelems, i) __dma_sync_for_cpu(sg_virt(sg), sg->length, direction); } -EXPORT_SYMBOL(dma_sync_sg_for_cpu); -void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, - int nelems, enum dma_data_direction direction) +static void nios2_dma_sync_sg_for_device(struct device *dev, + struct scatterlist *sg, int nelems, + enum dma_data_direction direction) { int i; - BUG_ON(!valid_dma_direction(direction)); - /* Make sure that gcc doesn't leave the empty loop body. */ for_each_sg(sg, sg, nelems, i) __dma_sync_for_device(sg_virt(sg), sg->length, direction); } -EXPORT_SYMBOL(dma_sync_sg_for_device); + +struct dma_map_ops nios2_dma_ops = { + .alloc = nios2_dma_alloc, + .free = nios2_dma_free, + .map_page = nios2_dma_map_page, + .unmap_page = nios2_dma_unmap_page, + .map_sg = nios2_dma_map_sg, + .unmap_sg = nios2_dma_unmap_sg, + .sync_single_for_device = nios2_dma_sync_single_for_device, + .sync_single_for_cpu = nios2_dma_sync_single_for_cpu, + .sync_sg_for_cpu = nios2_dma_sync_sg_for_cpu, + .sync_sg_for_device = nios2_dma_sync_sg_for_device, +}; +EXPORT_SYMBOL(nios2_dma_ops); diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig index 443f44de1020..e118c02cc79a 100644 --- a/arch/openrisc/Kconfig +++ b/arch/openrisc/Kconfig @@ -29,9 +29,6 @@ config OPENRISC config MMU def_bool y -config HAVE_DMA_ATTRS - def_bool y - config RWSEM_GENERIC_SPINLOCK def_bool y diff --git a/arch/openrisc/include/asm/dma-mapping.h b/arch/openrisc/include/asm/dma-mapping.h index 413bfcf86384..1f260bccb368 100644 --- a/arch/openrisc/include/asm/dma-mapping.h +++ b/arch/openrisc/include/asm/dma-mapping.h @@ -42,6 +42,4 @@ static inline int dma_supported(struct device *dev, u64 dma_mask) return dma_mask == DMA_BIT_MASK(32); } -#include <asm-generic/dma-mapping-common.h> - #endif /* __ASM_OPENRISC_DMA_MAPPING_H */ diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 7c34cafdf301..14f655cf542e 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -29,6 +29,7 @@ config PARISC select TTY # Needed for pdc_cons.c select HAVE_DEBUG_STACKOVERFLOW select HAVE_ARCH_AUDITSYSCALL + select ARCH_NO_COHERENT_DMA_MMAP help The PA-RISC microprocessor is designed by Hewlett-Packard and used diff --git a/arch/parisc/include/asm/dma-mapping.h b/arch/parisc/include/asm/dma-mapping.h index d8d60a57183f..16e024602737 100644 --- a/arch/parisc/include/asm/dma-mapping.h +++ b/arch/parisc/include/asm/dma-mapping.h @@ -1,30 +1,11 @@ #ifndef _PARISC_DMA_MAPPING_H #define _PARISC_DMA_MAPPING_H -#include <linux/mm.h> -#include <linux/scatterlist.h> #include <asm/cacheflush.h> -/* See Documentation/DMA-API-HOWTO.txt */ -struct hppa_dma_ops { - int (*dma_supported)(struct device *dev, u64 mask); - void *(*alloc_consistent)(struct device *dev, size_t size, dma_addr_t *iova, gfp_t flag); - void *(*alloc_noncoherent)(struct device *dev, size_t size, dma_addr_t *iova, gfp_t flag); - void (*free_consistent)(struct device *dev, size_t size, void *vaddr, dma_addr_t iova); - dma_addr_t (*map_single)(struct device *dev, void *addr, size_t size, enum dma_data_direction direction); - void (*unmap_single)(struct device *dev, dma_addr_t iova, size_t size, enum dma_data_direction direction); - int (*map_sg)(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction direction); - void (*unmap_sg)(struct device *dev, struct scatterlist *sg, int nhwents, enum dma_data_direction direction); - void (*dma_sync_single_for_cpu)(struct device *dev, dma_addr_t iova, unsigned long offset, size_t size, enum dma_data_direction direction); - void (*dma_sync_single_for_device)(struct device *dev, dma_addr_t iova, unsigned long offset, size_t size, enum dma_data_direction direction); - void (*dma_sync_sg_for_cpu)(struct device *dev, struct scatterlist *sg, int nelems, enum dma_data_direction direction); - void (*dma_sync_sg_for_device)(struct device *dev, struct scatterlist *sg, int nelems, enum dma_data_direction direction); -}; - /* -** We could live without the hppa_dma_ops indirection if we didn't want -** to support 4 different coherent dma models with one binary (they will -** someday be loadable modules): +** We need to support 4 different coherent dma models with one binary: +** ** I/O MMU consistent method dma_sync behavior ** ============= ====================== ======================= ** a) PA-7x00LC uncachable host memory flush/purge @@ -40,158 +21,22 @@ struct hppa_dma_ops { */ #ifdef CONFIG_PA11 -extern struct hppa_dma_ops pcxl_dma_ops; -extern struct hppa_dma_ops pcx_dma_ops; +extern struct dma_map_ops pcxl_dma_ops; +extern struct dma_map_ops pcx_dma_ops; #endif -extern struct hppa_dma_ops *hppa_dma_ops; - -#define dma_alloc_attrs(d, s, h, f, a) dma_alloc_coherent(d, s, h, f) -#define dma_free_attrs(d, s, h, f, a) dma_free_coherent(d, s, h, f) - -static inline void * -dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, - gfp_t flag) -{ - return hppa_dma_ops->alloc_consistent(dev, size, dma_handle, flag); -} - -static inline void * -dma_alloc_noncoherent(struct device *dev, size_t size, dma_addr_t *dma_handle, - gfp_t flag) -{ - return hppa_dma_ops->alloc_noncoherent(dev, size, dma_handle, flag); -} - -static inline void -dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle) -{ - hppa_dma_ops->free_consistent(dev, size, vaddr, dma_handle); -} - -static inline void -dma_free_noncoherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle) -{ - hppa_dma_ops->free_consistent(dev, size, vaddr, dma_handle); -} - -static inline dma_addr_t -dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction direction) -{ - return hppa_dma_ops->map_single(dev, ptr, size, direction); -} - -static inline void -dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, - enum dma_data_direction direction) -{ - hppa_dma_ops->unmap_single(dev, dma_addr, size, direction); -} - -static inline int -dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction direction) -{ - return hppa_dma_ops->map_sg(dev, sg, nents, direction); -} +extern struct dma_map_ops *hppa_dma_ops; -static inline void -dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, - enum dma_data_direction direction) -{ - hppa_dma_ops->unmap_sg(dev, sg, nhwentries, direction); -} - -static inline dma_addr_t -dma_map_page(struct device *dev, struct page *page, unsigned long offset, - size_t size, enum dma_data_direction direction) -{ - return dma_map_single(dev, (page_address(page) + (offset)), size, direction); -} - -static inline void -dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, - enum dma_data_direction direction) +static inline struct dma_map_ops *get_dma_ops(struct device *dev) { - dma_unmap_single(dev, dma_address, size, direction); -} - - -static inline void -dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size, - enum dma_data_direction direction) -{ - if(hppa_dma_ops->dma_sync_single_for_cpu) - hppa_dma_ops->dma_sync_single_for_cpu(dev, dma_handle, 0, size, direction); -} - -static inline void -dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size, - enum dma_data_direction direction) -{ - if(hppa_dma_ops->dma_sync_single_for_device) - hppa_dma_ops->dma_sync_single_for_device(dev, dma_handle, 0, size, direction); -} - -static inline 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) -{ - if(hppa_dma_ops->dma_sync_single_for_cpu) - hppa_dma_ops->dma_sync_single_for_cpu(dev, dma_handle, offset, size, direction); -} - -static inline void -dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ - if(hppa_dma_ops->dma_sync_single_for_device) - hppa_dma_ops->dma_sync_single_for_device(dev, dma_handle, offset, size, direction); -} - -static inline void -dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems, - enum dma_data_direction direction) -{ - if(hppa_dma_ops->dma_sync_sg_for_cpu) - hppa_dma_ops->dma_sync_sg_for_cpu(dev, sg, nelems, direction); -} - -static inline void -dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems, - enum dma_data_direction direction) -{ - if(hppa_dma_ops->dma_sync_sg_for_device) - hppa_dma_ops->dma_sync_sg_for_device(dev, sg, nelems, direction); -} - -static inline int -dma_supported(struct device *dev, u64 mask) -{ - return hppa_dma_ops->dma_supported(dev, mask); -} - -static inline int -dma_set_mask(struct device *dev, u64 mask) -{ - if(!dev->dma_mask || !dma_supported(dev, mask)) - return -EIO; - - *dev->dma_mask = mask; - - return 0; + return hppa_dma_ops; } static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, enum dma_data_direction direction) { - if(hppa_dma_ops->dma_sync_single_for_cpu) + if (hppa_dma_ops->sync_single_for_cpu) flush_kernel_dcache_range((unsigned long)vaddr, size); } @@ -238,22 +83,4 @@ struct parisc_device; void * sba_get_iommu(struct parisc_device *dev); #endif -/* At the moment, we panic on error for IOMMU resource exaustion */ -#define dma_mapping_error(dev, x) 0 - -/* This API cannot be supported on PA-RISC */ -static inline int dma_mmap_coherent(struct device *dev, - struct vm_area_struct *vma, void *cpu_addr, - dma_addr_t dma_addr, size_t size) -{ - return -EINVAL; -} - -static inline int dma_get_sgtable(struct device *dev, struct sg_table *sgt, - void *cpu_addr, dma_addr_t dma_addr, - size_t size) -{ - return -EINVAL; -} - #endif diff --git a/arch/parisc/kernel/drivers.c b/arch/parisc/kernel/drivers.c index dba508fe1683..f8150669b8c6 100644 --- a/arch/parisc/kernel/drivers.c +++ b/arch/parisc/kernel/drivers.c @@ -40,7 +40,7 @@ #include <asm/parisc-device.h> /* See comments in include/asm-parisc/pci.h */ -struct hppa_dma_ops *hppa_dma_ops __read_mostly; +struct dma_map_ops *hppa_dma_ops __read_mostly; EXPORT_SYMBOL(hppa_dma_ops); static struct device root = { diff --git a/arch/parisc/kernel/pci-dma.c b/arch/parisc/kernel/pci-dma.c index b9402c9b3454..a27e4928bf73 100644 --- a/arch/parisc/kernel/pci-dma.c +++ b/arch/parisc/kernel/pci-dma.c @@ -413,7 +413,8 @@ pcxl_dma_init(void) __initcall(pcxl_dma_init); -static void * pa11_dma_alloc_consistent (struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flag) +static void *pa11_dma_alloc(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag, struct dma_attrs *attrs) { unsigned long vaddr; unsigned long paddr; @@ -439,7 +440,8 @@ static void * pa11_dma_alloc_consistent (struct device *dev, size_t size, dma_ad return (void *)vaddr; } -static void pa11_dma_free_consistent (struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle) +static void pa11_dma_free(struct device *dev, size_t size, void *vaddr, + dma_addr_t dma_handle, struct dma_attrs *attrs) { int order; @@ -450,15 +452,20 @@ static void pa11_dma_free_consistent (struct device *dev, size_t size, void *vad free_pages((unsigned long)__va(dma_handle), order); } -static dma_addr_t pa11_dma_map_single(struct device *dev, void *addr, size_t size, enum dma_data_direction direction) +static dma_addr_t pa11_dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction direction, struct dma_attrs *attrs) { + void *addr = page_address(page) + offset; BUG_ON(direction == DMA_NONE); flush_kernel_dcache_range((unsigned long) addr, size); return virt_to_phys(addr); } -static void pa11_dma_unmap_single(struct device *dev, dma_addr_t dma_handle, size_t size, enum dma_data_direction direction) +static void pa11_dma_unmap_page(struct device *dev, dma_addr_t dma_handle, + size_t size, enum dma_data_direction direction, + struct dma_attrs *attrs) { BUG_ON(direction == DMA_NONE); @@ -475,7 +482,9 @@ static void pa11_dma_unmap_single(struct device *dev, dma_addr_t dma_handle, siz return; } -static int pa11_dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, enum dma_data_direction direction) +static int pa11_dma_map_sg(struct device *dev, struct scatterlist *sglist, + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs) { int i; struct scatterlist *sg; @@ -492,7 +501,9 @@ static int pa11_dma_map_sg(struct device *dev, struct scatterlist *sglist, int n return nents; } -static void pa11_dma_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents, enum dma_data_direction direction) +static void pa11_dma_unmap_sg(struct device *dev, struct scatterlist *sglist, + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs) { int i; struct scatterlist *sg; @@ -509,18 +520,24 @@ static void pa11_dma_unmap_sg(struct device *dev, struct scatterlist *sglist, in return; } -static void pa11_dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, unsigned long offset, size_t size, enum dma_data_direction direction) +static void pa11_dma_sync_single_for_cpu(struct device *dev, + dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) { BUG_ON(direction == DMA_NONE); - flush_kernel_dcache_range((unsigned long) phys_to_virt(dma_handle) + offset, size); + flush_kernel_dcache_range((unsigned long) phys_to_virt(dma_handle), + size); } -static void pa11_dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, unsigned long offset, size_t size, enum dma_data_direction direction) +static void pa11_dma_sync_single_for_device(struct device *dev, + dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) { BUG_ON(direction == DMA_NONE); - flush_kernel_dcache_range((unsigned long) phys_to_virt(dma_handle) + offset, size); + flush_kernel_dcache_range((unsigned long) phys_to_virt(dma_handle), + size); } static void pa11_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sglist, int nents, enum dma_data_direction direction) @@ -545,32 +562,28 @@ static void pa11_dma_sync_sg_for_device(struct device *dev, struct scatterlist * flush_kernel_vmap_range(sg_virt(sg), sg->length); } -struct hppa_dma_ops pcxl_dma_ops = { +struct dma_map_ops pcxl_dma_ops = { .dma_supported = pa11_dma_supported, - .alloc_consistent = pa11_dma_alloc_consistent, - .alloc_noncoherent = pa11_dma_alloc_consistent, - .free_consistent = pa11_dma_free_consistent, - .map_single = pa11_dma_map_single, - .unmap_single = pa11_dma_unmap_single, + .alloc = pa11_dma_alloc, + .free = pa11_dma_free, + .map_page = pa11_dma_map_page, + .unmap_page = pa11_dma_unmap_page, .map_sg = pa11_dma_map_sg, .unmap_sg = pa11_dma_unmap_sg, - .dma_sync_single_for_cpu = pa11_dma_sync_single_for_cpu, - .dma_sync_single_for_device = pa11_dma_sync_single_for_device, - .dma_sync_sg_for_cpu = pa11_dma_sync_sg_for_cpu, - .dma_sync_sg_for_device = pa11_dma_sync_sg_for_device, + .sync_single_for_cpu = pa11_dma_sync_single_for_cpu, + .sync_single_for_device = pa11_dma_sync_single_for_device, + .sync_sg_for_cpu = pa11_dma_sync_sg_for_cpu, + .sync_sg_for_device = pa11_dma_sync_sg_for_device, }; -static void *fail_alloc_consistent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag) -{ - return NULL; -} - -static void *pa11_dma_alloc_noncoherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag) +static void *pcx_dma_alloc(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag, struct dma_attrs *attrs) { void *addr; + if (!dma_get_attr(DMA_ATTR_NON_CONSISTENT, attrs)) + return NULL; + addr = (void *)__get_free_pages(flag, get_order(size)); if (addr) *dma_handle = (dma_addr_t)virt_to_phys(addr); @@ -578,24 +591,23 @@ static void *pa11_dma_alloc_noncoherent(struct device *dev, size_t size, return addr; } -static void pa11_dma_free_noncoherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t iova) +static void pcx_dma_free(struct device *dev, size_t size, void *vaddr, + dma_addr_t iova, struct dma_attrs *attrs) { free_pages((unsigned long)vaddr, get_order(size)); return; } -struct hppa_dma_ops pcx_dma_ops = { +struct dma_map_ops pcx_dma_ops = { .dma_supported = pa11_dma_supported, - .alloc_consistent = fail_alloc_consistent, - .alloc_noncoherent = pa11_dma_alloc_noncoherent, - .free_consistent = pa11_dma_free_noncoherent, - .map_single = pa11_dma_map_single, - .unmap_single = pa11_dma_unmap_single, + .alloc = pcx_dma_alloc, + .free = pcx_dma_free, + .map_page = pa11_dma_map_page, + .unmap_page = pa11_dma_unmap_page, .map_sg = pa11_dma_map_sg, .unmap_sg = pa11_dma_unmap_sg, - .dma_sync_single_for_cpu = pa11_dma_sync_single_for_cpu, - .dma_sync_single_for_device = pa11_dma_sync_single_for_device, - .dma_sync_sg_for_cpu = pa11_dma_sync_sg_for_cpu, - .dma_sync_sg_for_device = pa11_dma_sync_sg_for_device, + .sync_single_for_cpu = pa11_dma_sync_single_for_cpu, + .sync_single_for_device = pa11_dma_sync_single_for_device, + .sync_sg_for_cpu = pa11_dma_sync_sg_for_cpu, + .sync_sg_for_device = pa11_dma_sync_sg_for_device, }; diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 89210bfdfc7a..25283796a02e 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -108,7 +108,6 @@ config PPC select HAVE_ARCH_TRACEHOOK select HAVE_MEMBLOCK select HAVE_MEMBLOCK_NODE_MAP - select HAVE_DMA_ATTRS select HAVE_DMA_API_DEBUG select HAVE_OPROFILE select HAVE_DEBUG_KMEMLEAK diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h index 7f522c021dc3..77816acd4fd9 100644 --- a/arch/powerpc/include/asm/dma-mapping.h +++ b/arch/powerpc/include/asm/dma-mapping.h @@ -125,8 +125,6 @@ static inline void set_dma_offset(struct device *dev, dma_addr_t off) #define HAVE_ARCH_DMA_SET_MASK 1 extern int dma_set_mask(struct device *dev, u64 dma_mask); -#include <asm-generic/dma-mapping-common.h> - extern int __dma_set_mask(struct device *dev, u64 dma_mask); extern u64 __dma_get_required_mask(struct device *dev); diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index e648f1af50a1..5662778ca8d0 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -123,7 +123,6 @@ config S390 select HAVE_CMPXCHG_DOUBLE select HAVE_CMPXCHG_LOCAL select HAVE_DEBUG_KMEMLEAK - select HAVE_DMA_ATTRS select HAVE_DMA_API_DEBUG select HAVE_DYNAMIC_FTRACE select HAVE_DYNAMIC_FTRACE_WITH_REGS diff --git a/arch/s390/include/asm/dma-mapping.h b/arch/s390/include/asm/dma-mapping.h index cb05f5c57ce1..3249b7464889 100644 --- a/arch/s390/include/asm/dma-mapping.h +++ b/arch/s390/include/asm/dma-mapping.h @@ -25,8 +25,6 @@ static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, { } -#include <asm-generic/dma-mapping-common.h> - static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) { if (!dev->dma_mask) diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 6c391a5d3e5c..e13da05505dc 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -11,7 +11,6 @@ config SUPERH select HAVE_GENERIC_DMA_COHERENT select HAVE_ARCH_TRACEHOOK select HAVE_DMA_API_DEBUG - select HAVE_DMA_ATTRS select HAVE_PERF_EVENTS select HAVE_DEBUG_BUGVERBOSE select ARCH_HAVE_CUSTOM_GPIO_H diff --git a/arch/sh/include/asm/dma-mapping.h b/arch/sh/include/asm/dma-mapping.h index a3745a3fe029..e11cf0c8206b 100644 --- a/arch/sh/include/asm/dma-mapping.h +++ b/arch/sh/include/asm/dma-mapping.h @@ -11,8 +11,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) #define DMA_ERROR_CODE 0 -#include <asm-generic/dma-mapping-common.h> - void dma_cache_sync(struct device *dev, void *vaddr, size_t size, enum dma_data_direction dir); diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 3203e42190dd..57ffaf285c2f 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -26,7 +26,6 @@ config SPARC select RTC_CLASS select RTC_DRV_M48T59 select RTC_SYSTOHC - select HAVE_DMA_ATTRS select HAVE_DMA_API_DEBUG select HAVE_ARCH_JUMP_LABEL if SPARC64 select GENERIC_IRQ_SHOW diff --git a/arch/sparc/include/asm/dma-mapping.h b/arch/sparc/include/asm/dma-mapping.h index a21da597b0b5..1180ae254154 100644 --- a/arch/sparc/include/asm/dma-mapping.h +++ b/arch/sparc/include/asm/dma-mapping.h @@ -37,21 +37,4 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) return dma_ops; } -#define HAVE_ARCH_DMA_SET_MASK 1 - -static inline int dma_set_mask(struct device *dev, u64 mask) -{ -#ifdef CONFIG_PCI - if (dev->bus == &pci_bus_type) { - if (!dev->dma_mask || !dma_supported(dev, mask)) - return -EINVAL; - *dev->dma_mask = mask; - return 0; - } -#endif - return -EINVAL; -} - -#include <asm-generic/dma-mapping-common.h> - #endif diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig index dff39e25f61d..173ee4c10c35 100644 --- a/arch/tile/Kconfig +++ b/arch/tile/Kconfig @@ -5,7 +5,6 @@ config TILE def_bool y select HAVE_PERF_EVENTS select USE_PMC if PERF_EVENTS - select HAVE_DMA_ATTRS select HAVE_DMA_API_DEBUG select HAVE_KVM if !TILEGX select GENERIC_FIND_FIRST_BIT diff --git a/arch/tile/include/asm/dma-mapping.h b/arch/tile/include/asm/dma-mapping.h index 96ac6cce4a32..01ceb4a895b0 100644 --- a/arch/tile/include/asm/dma-mapping.h +++ b/arch/tile/include/asm/dma-mapping.h @@ -73,37 +73,7 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) } #define HAVE_ARCH_DMA_SET_MASK 1 - -#include <asm-generic/dma-mapping-common.h> - -static inline int -dma_set_mask(struct device *dev, u64 mask) -{ - struct dma_map_ops *dma_ops = get_dma_ops(dev); - - /* - * For PCI devices with 64-bit DMA addressing capability, promote - * the dma_ops to hybrid, with the consistent memory DMA space limited - * to 32-bit. For 32-bit capable devices, limit the streaming DMA - * address range to max_direct_dma_addr. - */ - if (dma_ops == gx_pci_dma_map_ops || - dma_ops == gx_hybrid_pci_dma_map_ops || - dma_ops == gx_legacy_pci_dma_map_ops) { - if (mask == DMA_BIT_MASK(64) && - dma_ops == gx_legacy_pci_dma_map_ops) - set_dma_ops(dev, gx_hybrid_pci_dma_map_ops); - else if (mask > dev->archdata.max_direct_dma_addr) - mask = dev->archdata.max_direct_dma_addr; - } - - if (!dev->dma_mask || !dma_supported(dev, mask)) - return -EIO; - - *dev->dma_mask = mask; - - return 0; -} +int dma_set_mask(struct device *dev, u64 mask); /* * dma_alloc_noncoherent() is #defined to return coherent memory, diff --git a/arch/tile/kernel/pci-dma.c b/arch/tile/kernel/pci-dma.c index 09b58703ac26..b6bc0547a4f6 100644 --- a/arch/tile/kernel/pci-dma.c +++ b/arch/tile/kernel/pci-dma.c @@ -583,6 +583,35 @@ struct dma_map_ops *gx_hybrid_pci_dma_map_ops; EXPORT_SYMBOL(gx_legacy_pci_dma_map_ops); EXPORT_SYMBOL(gx_hybrid_pci_dma_map_ops); +int dma_set_mask(struct device *dev, u64 mask) +{ + struct dma_map_ops *dma_ops = get_dma_ops(dev); + + /* + * For PCI devices with 64-bit DMA addressing capability, promote + * the dma_ops to hybrid, with the consistent memory DMA space limited + * to 32-bit. For 32-bit capable devices, limit the streaming DMA + * address range to max_direct_dma_addr. + */ + if (dma_ops == gx_pci_dma_map_ops || + dma_ops == gx_hybrid_pci_dma_map_ops || + dma_ops == gx_legacy_pci_dma_map_ops) { + if (mask == DMA_BIT_MASK(64) && + dma_ops == gx_legacy_pci_dma_map_ops) + set_dma_ops(dev, gx_hybrid_pci_dma_map_ops); + else if (mask > dev->archdata.max_direct_dma_addr) + mask = dev->archdata.max_direct_dma_addr; + } + + if (!dev->dma_mask || !dma_supported(dev, mask)) + return -EIO; + + *dev->dma_mask = mask; + + return 0; +} +EXPORT_SYMBOL(dma_set_mask); + #ifdef CONFIG_ARCH_HAS_DMA_SET_COHERENT_MASK int dma_set_coherent_mask(struct device *dev, u64 mask) { diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig index 910aaaaed969..cb01ea45c52c 100644 --- a/arch/unicore32/Kconfig +++ b/arch/unicore32/Kconfig @@ -4,7 +4,6 @@ config UNICORE32 select ARCH_MIGHT_HAVE_PC_SERIO select HAVE_MEMBLOCK select HAVE_GENERIC_DMA_COHERENT - select HAVE_DMA_ATTRS select HAVE_KERNEL_GZIP select HAVE_KERNEL_BZIP2 select GENERIC_ATOMIC64 diff --git a/arch/unicore32/include/asm/dma-mapping.h b/arch/unicore32/include/asm/dma-mapping.h index 8140e053ccd3..4749854afd03 100644 --- a/arch/unicore32/include/asm/dma-mapping.h +++ b/arch/unicore32/include/asm/dma-mapping.h @@ -28,8 +28,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) return &swiotlb_dma_map_ops; } -#include <asm-generic/dma-mapping-common.h> - static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) { if (dev && dev->dma_mask) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index c989d5b89e1f..324ac56aa8d1 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -98,7 +98,6 @@ config X86 select HAVE_DEBUG_KMEMLEAK select HAVE_DEBUG_STACKOVERFLOW select HAVE_DMA_API_DEBUG - select HAVE_DMA_ATTRS select HAVE_DMA_CONTIGUOUS select HAVE_DYNAMIC_FTRACE select HAVE_DYNAMIC_FTRACE_WITH_REGS diff --git a/arch/x86/include/asm/dma-mapping.h b/arch/x86/include/asm/dma-mapping.h index 953b7263f844..3a27b93e6261 100644 --- a/arch/x86/include/asm/dma-mapping.h +++ b/arch/x86/include/asm/dma-mapping.h @@ -46,8 +46,6 @@ bool arch_dma_alloc_attrs(struct device **dev, gfp_t *gfp); #define HAVE_ARCH_DMA_SUPPORTED 1 extern int dma_supported(struct device *hwdev, u64 mask); -#include <asm-generic/dma-mapping-common.h> - extern void *dma_generic_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_addr, gfp_t flag, struct dma_attrs *attrs); diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 82044f732323..e9df1567d778 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -15,7 +15,6 @@ config XTENSA select GENERIC_PCI_IOMAP select GENERIC_SCHED_CLOCK select HAVE_DMA_API_DEBUG - select HAVE_DMA_ATTRS select HAVE_FUNCTION_TRACER select HAVE_FUTEX_CMPXCHG if !MMU select HAVE_IRQ_TIME_ACCOUNTING diff --git a/arch/xtensa/include/asm/dma-mapping.h b/arch/xtensa/include/asm/dma-mapping.h index 66c9ba261e30..3fc1170a6488 100644 --- a/arch/xtensa/include/asm/dma-mapping.h +++ b/arch/xtensa/include/asm/dma-mapping.h @@ -13,8 +13,6 @@ #include <asm/cache.h> #include <asm/io.h> -#include <asm-generic/dma-coherent.h> - #include <linux/mm.h> #include <linux/scatterlist.h> @@ -30,8 +28,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) return &xtensa_dma_map_ops; } -#include <asm-generic/dma-mapping-common.h> - void dma_cache_sync(struct device *dev, void *vaddr, size_t size, enum dma_data_direction direction); |