diff options
| -rw-r--r-- | arch/sparc/include/asm/dma-mapping.h | 148 | ||||
| -rw-r--r-- | arch/sparc/include/asm/dma-mapping_32.h | 42 | ||||
| -rw-r--r-- | arch/sparc/include/asm/dma-mapping_64.h | 121 | ||||
| -rw-r--r-- | arch/sparc/kernel/dma.c | 99 |
4 files changed, 172 insertions, 238 deletions
diff --git a/arch/sparc/include/asm/dma-mapping.h b/arch/sparc/include/asm/dma-mapping.h index 8c911ea..204e4bf 100644 --- a/arch/sparc/include/asm/dma-mapping.h +++ b/arch/sparc/include/asm/dma-mapping.h @@ -1,33 +1,134 @@ #ifndef ___ASM_SPARC_DMA_MAPPING_H #define ___ASM_SPARC_DMA_MAPPING_H -#if defined(__sparc__) && defined(__arch64__) -#include <asm/dma-mapping_64.h> -#else -#include <asm/dma-mapping_32.h> -#endif + +#include <linux/scatterlist.h> +#include <linux/mm.h> #define DMA_ERROR_CODE (~(dma_addr_t)0x0) extern int dma_supported(struct device *dev, u64 mask); extern int dma_set_mask(struct device *dev, u64 dma_mask); -static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) +#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_is_consistent(d, h) (1) + +struct dma_ops { + void *(*alloc_coherent)(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag); + void (*free_coherent)(struct device *dev, size_t size, + void *cpu_addr, dma_addr_t dma_handle); + dma_addr_t (*map_page)(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction direction); + void (*unmap_page)(struct device *dev, dma_addr_t dma_addr, + 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 nhwentries, + enum dma_data_direction direction); + void (*sync_single_for_cpu)(struct device *dev, + dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction); + void (*sync_single_for_device)(struct device *dev, + dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction); + void (*sync_sg_for_cpu)(struct device *dev, struct scatterlist *sg, + int nelems, + enum dma_data_direction direction); + void (*sync_sg_for_device)(struct device *dev, + struct scatterlist *sg, int nents, + enum dma_data_direction dir); +}; +extern const struct dma_ops *dma_ops; + +static inline void *dma_alloc_coherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag) { - return (dma_addr == DMA_ERROR_CODE); + return dma_ops->alloc_coherent(dev, size, dma_handle, flag); } -static inline int dma_get_cache_alignment(void) +static inline void dma_free_coherent(struct device *dev, size_t size, + void *cpu_addr, dma_addr_t dma_handle) { - /* - * no easy way to get cache size on all processors, so return - * the maximum possible, to be safe - */ - return (1 << INTERNODE_CACHE_SHIFT); + dma_ops->free_coherent(dev, size, cpu_addr, 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) -#define dma_is_consistent(d, h) (1) +static inline dma_addr_t dma_map_single(struct device *dev, void *cpu_addr, + size_t size, + enum dma_data_direction direction) +{ + return dma_ops->map_page(dev, virt_to_page(cpu_addr), + (unsigned long)cpu_addr & ~PAGE_MASK, size, + direction); +} + +static inline void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, + size_t size, + enum dma_data_direction direction) +{ + dma_ops->unmap_page(dev, dma_addr, size, 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_ops->map_page(dev, 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) +{ + dma_ops->unmap_page(dev, dma_address, size, direction); +} + +static inline int dma_map_sg(struct device *dev, struct scatterlist *sg, + int nents, enum dma_data_direction direction) +{ + return dma_ops->map_sg(dev, sg, nents, direction); +} + +static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sg, + int nents, enum dma_data_direction direction) +{ + dma_ops->unmap_sg(dev, sg, nents, 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_ops->sync_single_for_cpu(dev, 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) +{ + if (dma_ops->sync_single_for_device) + dma_ops->sync_single_for_device(dev, dma_handle, size, + direction); +} + +static inline void dma_sync_sg_for_cpu(struct device *dev, + struct scatterlist *sg, int nelems, + enum dma_data_direction direction) +{ + dma_ops->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 (dma_ops->sync_sg_for_device) + dma_ops->sync_sg_for_device(dev, sg, nelems, direction); +} static inline void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle, @@ -47,4 +148,19 @@ static inline void dma_sync_single_range_for_device(struct device *dev, dma_sync_single_for_device(dev, dma_handle+offset, size, dir); } + +static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) +{ + return (dma_addr == DMA_ERROR_CODE); +} + +static inline int dma_get_cache_alignment(void) +{ + /* + * no easy way to get cache size on all processors, so return + * the maximum possible, to be safe + */ + return (1 << INTERNODE_CACHE_SHIFT); +} + #endif diff --git a/arch/sparc/include/asm/dma-mapping_32.h b/arch/sparc/include/asm/dma-mapping_32.h deleted file mode 100644 index 7f09c85..0000000 --- a/arch/sparc/include/asm/dma-mapping_32.h +++ /dev/null @@ -1,42 +0,0 @@ -#ifndef _ASM_SPARC_DMA_MAPPING_H -#define _ASM_SPARC_DMA_MAPPING_H - -#include <linux/types.h> - -struct device; -struct scatterlist; -struct page; - -extern void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag); -extern void dma_free_coherent(struct device *dev, size_t size, - void *cpu_addr, dma_addr_t dma_handle); -extern dma_addr_t dma_map_single(struct device *dev, void *cpu_addr, - size_t size, - enum dma_data_direction direction); -extern void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, - size_t size, - enum dma_data_direction direction); -extern 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 int dma_map_sg(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction direction); -extern void dma_unmap_sg(struct device *dev, struct scatterlist *sg, - int nents, 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_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); - -#endif /* _ASM_SPARC_DMA_MAPPING_H */ diff --git a/arch/sparc/include/asm/dma-mapping_64.h b/arch/sparc/include/asm/dma-mapping_64.h deleted file mode 100644 index 579757e..0000000 --- a/arch/sparc/include/asm/dma-mapping_64.h +++ /dev/null @@ -1,121 +0,0 @@ -#ifndef _ASM_SPARC64_DMA_MAPPING_H -#define _ASM_SPARC64_DMA_MAPPING_H - -#include <linux/scatterlist.h> -#include <linux/mm.h> - -struct dma_ops { - void *(*alloc_coherent)(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag); - void (*free_coherent)(struct device *dev, size_t size, - void *cpu_addr, dma_addr_t dma_handle); - dma_addr_t (*map_page)(struct device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction direction); - void (*unmap_page)(struct device *dev, dma_addr_t dma_addr, - 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 nhwentries, - enum dma_data_direction direction); - void (*sync_single_for_cpu)(struct device *dev, - dma_addr_t dma_handle, size_t size, - enum dma_data_direction direction); - void (*sync_single_for_device)(struct device *dev, - dma_addr_t dma_handle, size_t size, - enum dma_data_direction direction); - void (*sync_sg_for_cpu)(struct device *dev, struct scatterlist *sg, - int nelems, - enum dma_data_direction direction); - void (*sync_sg_for_device)(struct device *dev, - struct scatterlist *sg, int nents, - enum dma_data_direction dir); -}; -extern const struct dma_ops *dma_ops; - -static inline void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag) -{ - return dma_ops->alloc_coherent(dev, size, dma_handle, flag); -} - -static inline void dma_free_coherent(struct device *dev, size_t size, - void *cpu_addr, dma_addr_t dma_handle) -{ - dma_ops->free_coherent(dev, size, cpu_addr, dma_handle); -} - -static inline dma_addr_t dma_map_single(struct device *dev, void *cpu_addr, - size_t size, - enum dma_data_direction direction) -{ - return dma_ops->map_page(dev, virt_to_page(cpu_addr), - (unsigned long)cpu_addr & ~PAGE_MASK, size, - direction); -} - -static inline void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, - size_t size, - enum dma_data_direction direction) -{ - dma_ops->unmap_page(dev, dma_addr, size, 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_ops->map_page(dev, 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) -{ - dma_ops->unmap_page(dev, dma_address, size, direction); -} - -static inline int dma_map_sg(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction direction) -{ - return dma_ops->map_sg(dev, sg, nents, direction); -} - -static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction direction) -{ - dma_ops->unmap_sg(dev, sg, nents, 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_ops->sync_single_for_cpu(dev, 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) -{ - /* No flushing needed to sync cpu writes to the device. */ -} - -static inline void dma_sync_sg_for_cpu(struct device *dev, - struct scatterlist *sg, int nelems, - enum dma_data_direction direction) -{ - dma_ops->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) -{ - /* No flushing needed to sync cpu writes to the device. */ -} - -#endif /* _ASM_SPARC64_DMA_MAPPING_H */ diff --git a/arch/sparc/kernel/dma.c b/arch/sparc/kernel/dma.c index 3c9ff4f..524c32f 100644 --- a/arch/sparc/kernel/dma.c +++ b/arch/sparc/kernel/dma.c @@ -35,8 +35,8 @@ int dma_set_mask(struct device *dev, u64 dma_mask) } EXPORT_SYMBOL(dma_set_mask); -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag) +static void *dma32_alloc_coherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag) { #ifdef CONFIG_PCI if (dev->bus == &pci_bus_type) @@ -44,10 +44,9 @@ void *dma_alloc_coherent(struct device *dev, size_t size, #endif return sbus_alloc_consistent(dev, size, dma_handle); } -EXPORT_SYMBOL(dma_alloc_coherent); -void dma_free_coherent(struct device *dev, size_t size, - void *cpu_addr, dma_addr_t dma_handle) +static void dma32_free_coherent(struct device *dev, size_t size, + void *cpu_addr, dma_addr_t dma_handle) { #ifdef CONFIG_PCI if (dev->bus == &pci_bus_type) { @@ -58,38 +57,10 @@ void dma_free_coherent(struct device *dev, size_t size, #endif sbus_free_consistent(dev, size, cpu_addr, dma_handle); } -EXPORT_SYMBOL(dma_free_coherent); -dma_addr_t dma_map_single(struct device *dev, void *cpu_addr, - size_t size, enum dma_data_direction direction) -{ -#ifdef CONFIG_PCI - if (dev->bus == &pci_bus_type) - return pci_map_single(to_pci_dev(dev), cpu_addr, - size, (int)direction); -#endif - return sbus_map_single(dev, cpu_addr, size, (int)direction); -} -EXPORT_SYMBOL(dma_map_single); - -void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, - size_t size, - enum dma_data_direction direction) -{ -#ifdef CONFIG_PCI - if (dev->bus == &pci_bus_type) { - pci_unmap_single(to_pci_dev(dev), dma_addr, - size, (int)direction); - return; - } -#endif - sbus_unmap_single(dev, dma_addr, size, (int)direction); -} -EXPORT_SYMBOL(dma_unmap_single); - -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 dma32_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction direction) { #ifdef CONFIG_PCI if (dev->bus == &pci_bus_type) @@ -99,10 +70,9 @@ dma_addr_t dma_map_page(struct device *dev, struct page *page, return sbus_map_single(dev, page_address(page) + offset, size, (int)direction); } -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 dma32_unmap_page(struct device *dev, dma_addr_t dma_address, + size_t size, enum dma_data_direction direction) { #ifdef CONFIG_PCI if (dev->bus == &pci_bus_type) { @@ -113,10 +83,9 @@ void dma_unmap_page(struct device *dev, dma_addr_t dma_address, #endif sbus_unmap_single(dev, dma_address, size, (int)direction); } -EXPORT_SYMBOL(dma_unmap_page); -int dma_map_sg(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction direction) +static int dma32_map_sg(struct device *dev, struct scatterlist *sg, + int nents, enum dma_data_direction direction) { #ifdef CONFIG_PCI if (dev->bus == &pci_bus_type) @@ -124,10 +93,9 @@ int dma_map_sg(struct device *dev, struct scatterlist *sg, #endif return sbus_map_sg(dev, sg, nents, direction); } -EXPORT_SYMBOL(dma_map_sg); -void dma_unmap_sg(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction direction) +void dma32_unmap_sg(struct device *dev, struct scatterlist *sg, + int nents, enum dma_data_direction direction) { #ifdef CONFIG_PCI if (dev->bus == &pci_bus_type) { @@ -137,10 +105,10 @@ void dma_unmap_sg(struct device *dev, struct scatterlist *sg, #endif sbus_unmap_sg(dev, sg, nents, (int)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) +static void dma32_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, + size_t size, + enum dma_data_direction direction) { #ifdef CONFIG_PCI if (dev->bus == &pci_bus_type) { @@ -151,10 +119,10 @@ void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, #endif sbus_dma_sync_single_for_cpu(dev, dma_handle, size, (int) 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) +static void dma32_sync_single_for_device(struct device *dev, + dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) { #ifdef CONFIG_PCI if (dev->bus == &pci_bus_type) { @@ -165,10 +133,9 @@ void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, #endif sbus_dma_sync_single_for_device(dev, dma_handle, size, (int) direction); } -EXPORT_SYMBOL(dma_sync_single_for_device); -void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, - int nelems, enum dma_data_direction direction) +static void dma32_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, + int nelems, enum dma_data_direction direction) { #ifdef CONFIG_PCI if (dev->bus == &pci_bus_type) { @@ -179,11 +146,10 @@ void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, #endif BUG(); } -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 dma32_sync_sg_for_device(struct device *dev, + struct scatterlist *sg, int nelems, + enum dma_data_direction direction) { #ifdef CONFIG_PCI if (dev->bus == &pci_bus_type) { @@ -194,4 +160,19 @@ void dma_sync_sg_for_device(struct device *dev, #endif BUG(); } -EXPORT_SYMBOL(dma_sync_sg_for_device); + +static const struct dma_ops dma32_dma_ops = { + .alloc_coherent = dma32_alloc_coherent, + .free_coherent = dma32_free_coherent, + .map_page = dma32_map_page, + .unmap_page = dma32_unmap_page, + .map_sg = dma32_map_sg, + .unmap_sg = dma32_unmap_sg, + .sync_single_for_cpu = dma32_sync_single_for_cpu, + .sync_single_for_device = dma32_sync_single_for_device, + .sync_sg_for_cpu = dma32_sync_sg_for_cpu, + .sync_sg_for_device = dma32_sync_sg_for_device, +}; + +const struct dma_ops *dma_ops = &dma32_dma_ops; +EXPORT_SYMBOL(dma_ops); |