diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/include/asm/dma-mapping.h')
-rw-r--r-- | ANDROID_3.4.5/arch/powerpc/include/asm/dma-mapping.h | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/include/asm/dma-mapping.h b/ANDROID_3.4.5/arch/powerpc/include/asm/dma-mapping.h deleted file mode 100644 index 62678e36..00000000 --- a/ANDROID_3.4.5/arch/powerpc/include/asm/dma-mapping.h +++ /dev/null @@ -1,223 +0,0 @@ -/* - * Copyright (C) 2004 IBM - * - * Implements the generic device dma API for powerpc. - * the pci and vio busses - */ -#ifndef _ASM_DMA_MAPPING_H -#define _ASM_DMA_MAPPING_H -#ifdef __KERNEL__ - -#include <linux/types.h> -#include <linux/cache.h> -/* need struct page definitions */ -#include <linux/mm.h> -#include <linux/scatterlist.h> -#include <linux/dma-attrs.h> -#include <linux/dma-debug.h> -#include <asm/io.h> -#include <asm/swiotlb.h> - -#define DMA_ERROR_CODE (~(dma_addr_t)0x0) - -/* Some dma direct funcs must be visible for use in other dma_ops */ -extern void *dma_direct_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag, - struct dma_attrs *attrs); -extern void dma_direct_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle, - struct dma_attrs *attrs); - - -#ifdef CONFIG_NOT_COHERENT_CACHE -/* - * DMA-consistent mapping functions for PowerPCs that don't support - * cache snooping. These allocate/free a region of uncached mapped - * memory space for use with DMA devices. Alternatively, you could - * allocate the space "normally" and use the cache management functions - * to ensure it is consistent. - */ -struct device; -extern void *__dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *handle, gfp_t gfp); -extern void __dma_free_coherent(size_t size, void *vaddr); -extern void __dma_sync(void *vaddr, size_t size, int direction); -extern void __dma_sync_page(struct page *page, unsigned long offset, - size_t size, int direction); -extern unsigned long __dma_get_coherent_pfn(unsigned long cpu_addr); - -#else /* ! CONFIG_NOT_COHERENT_CACHE */ -/* - * Cache coherent cores. - */ - -#define __dma_alloc_coherent(dev, gfp, size, handle) NULL -#define __dma_free_coherent(size, addr) ((void)0) -#define __dma_sync(addr, size, rw) ((void)0) -#define __dma_sync_page(pg, off, sz, rw) ((void)0) - -#endif /* ! CONFIG_NOT_COHERENT_CACHE */ - -static inline unsigned long device_to_mask(struct device *dev) -{ - if (dev->dma_mask && *dev->dma_mask) - return *dev->dma_mask; - /* Assume devices without mask can take 32 bit addresses */ - return 0xfffffffful; -} - -/* - * Available generic sets of operations - */ -#ifdef CONFIG_PPC64 -extern struct dma_map_ops dma_iommu_ops; -#endif -extern struct dma_map_ops dma_direct_ops; - -static inline struct dma_map_ops *get_dma_ops(struct device *dev) -{ - /* We don't handle the NULL dev case for ISA for now. We could - * do it via an out of line call but it is not needed for now. The - * only ISA DMA device we support is the floppy and we have a hack - * in the floppy driver directly to get a device for us. - */ - if (unlikely(dev == NULL)) - return NULL; - - return dev->archdata.dma_ops; -} - -static inline void set_dma_ops(struct device *dev, struct dma_map_ops *ops) -{ - dev->archdata.dma_ops = ops; -} - -/* - * get_dma_offset() - * - * Get the dma offset on configurations where the dma address can be determined - * from the physical address by looking at a simple offset. Direct dma and - * swiotlb use this function, but it is typically not used by implementations - * with an iommu. - */ -static inline dma_addr_t get_dma_offset(struct device *dev) -{ - if (dev) - return dev->archdata.dma_data.dma_offset; - - return PCI_DRAM_OFFSET; -} - -static inline void set_dma_offset(struct device *dev, dma_addr_t off) -{ - if (dev) - dev->archdata.dma_data.dma_offset = off; -} - -/* this will be removed soon */ -#define flush_write_buffers() - -#include <asm-generic/dma-mapping-common.h> - -static inline int dma_supported(struct device *dev, u64 mask) -{ - struct dma_map_ops *dma_ops = get_dma_ops(dev); - - if (unlikely(dma_ops == NULL)) - return 0; - if (dma_ops->dma_supported == NULL) - return 1; - return dma_ops->dma_supported(dev, mask); -} - -extern int dma_set_mask(struct device *dev, u64 dma_mask); - -#define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL) - -static inline void *dma_alloc_attrs(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag, - struct dma_attrs *attrs) -{ - struct dma_map_ops *dma_ops = get_dma_ops(dev); - void *cpu_addr; - - BUG_ON(!dma_ops); - - cpu_addr = dma_ops->alloc(dev, size, dma_handle, flag, attrs); - - debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr); - - return cpu_addr; -} - -#define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL) - -static inline void dma_free_attrs(struct device *dev, size_t size, - void *cpu_addr, dma_addr_t dma_handle, - struct dma_attrs *attrs) -{ - struct dma_map_ops *dma_ops = get_dma_ops(dev); - - BUG_ON(!dma_ops); - - debug_dma_free_coherent(dev, size, cpu_addr, dma_handle); - - dma_ops->free(dev, size, cpu_addr, dma_handle, attrs); -} - -static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - struct dma_map_ops *dma_ops = get_dma_ops(dev); - - if (dma_ops->mapping_error) - return dma_ops->mapping_error(dev, dma_addr); - -#ifdef CONFIG_PPC64 - return (dma_addr == DMA_ERROR_CODE); -#else - return 0; -#endif -} - -static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) -{ -#ifdef CONFIG_SWIOTLB - struct dev_archdata *sd = &dev->archdata; - - if (sd->max_direct_dma_addr && addr + size > sd->max_direct_dma_addr) - return 0; -#endif - - if (!dev->dma_mask) - return 0; - - return addr + size - 1 <= *dev->dma_mask; -} - -static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr) -{ - return paddr + get_dma_offset(dev); -} - -static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) -{ - return daddr - get_dma_offset(dev); -} - -#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 int dma_mmap_coherent(struct device *, struct vm_area_struct *, - void *, dma_addr_t, size_t); -#define ARCH_HAS_DMA_MMAP_COHERENT - - -static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); - __dma_sync(vaddr, size, (int)direction); -} - -#endif /* __KERNEL__ */ -#endif /* _ASM_DMA_MAPPING_H */ |