diff options
Diffstat (limited to 'libdde_linux26/contrib/include/linux/dma-mapping.h')
| -rw-r--r-- | libdde_linux26/contrib/include/linux/dma-mapping.h | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/libdde_linux26/contrib/include/linux/dma-mapping.h b/libdde_linux26/contrib/include/linux/dma-mapping.h deleted file mode 100644 index ba9114ec..00000000 --- a/libdde_linux26/contrib/include/linux/dma-mapping.h +++ /dev/null @@ -1,178 +0,0 @@ -#ifndef _LINUX_DMA_MAPPING_H -#define _LINUX_DMA_MAPPING_H - -#include <linux/device.h> -#include <linux/err.h> - -/* These definitions mirror those in pci.h, so they can be used - * interchangeably with their PCI_ counterparts */ -enum dma_data_direction { - DMA_BIDIRECTIONAL = 0, - DMA_TO_DEVICE = 1, - DMA_FROM_DEVICE = 2, - DMA_NONE = 3, -}; - -#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) - -/* - * NOTE: do not use the below macros in new code and do not add new definitions - * here. - * - * Instead, just open-code DMA_BIT_MASK(n) within your driver - */ -#define DMA_64BIT_MASK DMA_BIT_MASK(64) -#define DMA_48BIT_MASK DMA_BIT_MASK(48) -#define DMA_47BIT_MASK DMA_BIT_MASK(47) -#define DMA_40BIT_MASK DMA_BIT_MASK(40) -#define DMA_39BIT_MASK DMA_BIT_MASK(39) -#define DMA_35BIT_MASK DMA_BIT_MASK(35) -#define DMA_32BIT_MASK DMA_BIT_MASK(32) -#define DMA_31BIT_MASK DMA_BIT_MASK(31) -#define DMA_30BIT_MASK DMA_BIT_MASK(30) -#define DMA_29BIT_MASK DMA_BIT_MASK(29) -#define DMA_28BIT_MASK DMA_BIT_MASK(28) -#define DMA_24BIT_MASK DMA_BIT_MASK(24) - -#define DMA_MASK_NONE 0x0ULL - -static inline int valid_dma_direction(int dma_direction) -{ - return ((dma_direction == DMA_BIDIRECTIONAL) || - (dma_direction == DMA_TO_DEVICE) || - (dma_direction == DMA_FROM_DEVICE)); -} - -static inline int is_device_dma_capable(struct device *dev) -{ - return dev->dma_mask != NULL && *dev->dma_mask != DMA_MASK_NONE; -} - -static inline int is_buffer_dma_capable(u64 mask, dma_addr_t addr, size_t size) -{ - return addr + size <= mask; -} - -#ifdef CONFIG_HAS_DMA -#include <asm/dma-mapping.h> -#else -#include <asm-generic/dma-mapping-broken.h> -#endif - -/* Backwards compat, remove in 2.7.x */ -#define dma_sync_single dma_sync_single_for_cpu -#define dma_sync_sg dma_sync_sg_for_cpu - -static inline u64 dma_get_mask(struct device *dev) -{ - if (dev && dev->dma_mask && *dev->dma_mask) - return *dev->dma_mask; - return DMA_32BIT_MASK; -} - -extern u64 dma_get_required_mask(struct device *dev); - -static inline unsigned int dma_get_max_seg_size(struct device *dev) -{ - return dev->dma_parms ? dev->dma_parms->max_segment_size : 65536; -} - -static inline unsigned int dma_set_max_seg_size(struct device *dev, - unsigned int size) -{ - if (dev->dma_parms) { - dev->dma_parms->max_segment_size = size; - return 0; - } else - return -EIO; -} - -static inline unsigned long dma_get_seg_boundary(struct device *dev) -{ - return dev->dma_parms ? - dev->dma_parms->segment_boundary_mask : 0xffffffff; -} - -static inline int dma_set_seg_boundary(struct device *dev, unsigned long mask) -{ - if (dev->dma_parms) { - dev->dma_parms->segment_boundary_mask = mask; - return 0; - } else - return -EIO; -} - -/* flags for the coherent memory api */ -#define DMA_MEMORY_MAP 0x01 -#define DMA_MEMORY_IO 0x02 -#define DMA_MEMORY_INCLUDES_CHILDREN 0x04 -#define DMA_MEMORY_EXCLUSIVE 0x08 - -#ifndef ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY -static inline int -dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr, - dma_addr_t device_addr, size_t size, int flags) -{ - return 0; -} - -static inline void -dma_release_declared_memory(struct device *dev) -{ -} - -static inline void * -dma_mark_declared_memory_occupied(struct device *dev, - dma_addr_t device_addr, size_t size) -{ - return ERR_PTR(-EBUSY); -} -#endif - -/* - * Managed DMA API - */ -extern void *dmam_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp); -extern void dmam_free_coherent(struct device *dev, size_t size, void *vaddr, - dma_addr_t dma_handle); -extern void *dmam_alloc_noncoherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp); -extern void dmam_free_noncoherent(struct device *dev, size_t size, void *vaddr, - dma_addr_t dma_handle); -#ifdef ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY -extern int dmam_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr, - dma_addr_t device_addr, size_t size, - int flags); -extern void dmam_release_declared_memory(struct device *dev); -#else /* ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY */ -static inline int dmam_declare_coherent_memory(struct device *dev, - dma_addr_t bus_addr, dma_addr_t device_addr, - size_t size, gfp_t gfp) -{ - return 0; -} - -static inline void dmam_release_declared_memory(struct device *dev) -{ -} -#endif /* ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY */ - -#ifndef CONFIG_HAVE_DMA_ATTRS -struct dma_attrs; - -#define dma_map_single_attrs(dev, cpu_addr, size, dir, attrs) \ - dma_map_single(dev, cpu_addr, size, dir) - -#define dma_unmap_single_attrs(dev, dma_addr, size, dir, attrs) \ - dma_unmap_single(dev, dma_addr, size, dir) - -#define dma_map_sg_attrs(dev, sgl, nents, dir, attrs) \ - dma_map_sg(dev, sgl, nents, dir) - -#define dma_unmap_sg_attrs(dev, sgl, nents, dir, attrs) \ - dma_unmap_sg(dev, sgl, nents, dir) - -#endif /* CONFIG_HAVE_DMA_ATTRS */ - -#endif |