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Release 4.7 include/linux/dma-mapping.h

Directory: include/linux
#ifndef _LINUX_DMA_MAPPING_H

#define _LINUX_DMA_MAPPING_H

#include <linux/sizes.h>
#include <linux/string.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/dma-attrs.h>
#include <linux/dma-debug.h>
#include <linux/dma-direction.h>
#include <linux/scatterlist.h>
#include <linux/kmemcheck.h>
#include <linux/bug.h>

/*
 * A dma_addr_t can hold any valid DMA or bus address for the platform.
 * It can be given to a device to use as a DMA source or target.  A CPU cannot
 * reference a dma_addr_t directly because there may be translation between
 * its physical address space and the bus address space.
 */

struct dma_map_ops {
	
void* (*alloc)(struct device *dev, size_t size,
				dma_addr_t *dma_handle, gfp_t gfp,
				struct dma_attrs *attrs);
	
void (*free)(struct device *dev, size_t size,
			      void *vaddr, dma_addr_t dma_handle,
			      struct dma_attrs *attrs);
	
int (*mmap)(struct device *, struct vm_area_struct *,
			  void *, dma_addr_t, size_t, struct dma_attrs *attrs);

	
int (*get_sgtable)(struct device *dev, struct sg_table *sgt, void *,
			   dma_addr_t, size_t, struct dma_attrs *attrs);

	
dma_addr_t (*map_page)(struct device *dev, struct page *page,
			       unsigned long offset, size_t size,
			       enum dma_data_direction dir,
			       struct dma_attrs *attrs);
	
void (*unmap_page)(struct device *dev, dma_addr_t dma_handle,
			   size_t size, enum dma_data_direction dir,
			   struct dma_attrs *attrs);
	/*
         * map_sg returns 0 on error and a value > 0 on success.
         * It should never return a value < 0.
         */
	
int (*map_sg)(struct device *dev, struct scatterlist *sg,
		      int nents, enum dma_data_direction dir,
		      struct dma_attrs *attrs);
	
void (*unmap_sg)(struct device *dev,
			 struct scatterlist *sg, int nents,
			 enum dma_data_direction dir,
			 struct dma_attrs *attrs);
	
void (*sync_single_for_cpu)(struct device *dev,
				    dma_addr_t dma_handle, size_t size,
				    enum dma_data_direction dir);
	
void (*sync_single_for_device)(struct device *dev,
				       dma_addr_t dma_handle, size_t size,
				       enum dma_data_direction dir);
	
void (*sync_sg_for_cpu)(struct device *dev,
				struct scatterlist *sg, int nents,
				enum dma_data_direction dir);
	
void (*sync_sg_for_device)(struct device *dev,
				   struct scatterlist *sg, int nents,
				   enum dma_data_direction dir);
	
int (*mapping_error)(struct device *dev, dma_addr_t dma_addr);
	
int (*dma_supported)(struct device *dev, u64 mask);
	
int (*set_dma_mask)(struct device *dev, u64 mask);
#ifdef ARCH_HAS_DMA_GET_REQUIRED_MASK
	
u64 (*get_required_mask)(struct device *dev);
#endif
	
int is_phys;
};

extern struct dma_map_ops dma_noop_ops;


#define DMA_BIT_MASK(n)	(((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))


#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)); }

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static inline int is_device_dma_capable(struct device *dev) { return dev->dma_mask != NULL && *dev->dma_mask != DMA_MASK_NONE; }

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#ifdef CONFIG_HAVE_GENERIC_DMA_COHERENT /* * These three functions are only for dma allocator. * Don't use them in device drivers. */ int dma_alloc_from_coherent(struct device *dev, ssize_t size, dma_addr_t *dma_handle, void **ret); int dma_release_from_coherent(struct device *dev, int order, void *vaddr); int dma_mmap_from_coherent(struct device *dev, struct vm_area_struct *vma, void *cpu_addr, size_t size, int *ret); #else #define dma_alloc_from_coherent(dev, size, handle, ret) (0) #define dma_release_from_coherent(dev, order, vaddr) (0) #define dma_mmap_from_coherent(dev, vma, vaddr, order, ret) (0) #endif /* CONFIG_HAVE_GENERIC_DMA_COHERENT */ #ifdef CONFIG_HAS_DMA #include <asm/dma-mapping.h> #else /* * Define the dma api to allow compilation but not linking of * dma dependent code. Code that depends on the dma-mapping * API needs to set 'depends on HAS_DMA' in its Kconfig */ extern struct dma_map_ops bad_dma_ops;
static inline struct dma_map_ops *get_dma_ops(struct device *dev) { return &bad_dma_ops; }

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#endif
static inline dma_addr_t dma_map_single_attrs(struct device *dev, void *ptr, size_t size, enum dma_data_direction dir, struct dma_attrs *attrs) { struct dma_map_ops *ops = get_dma_ops(dev); dma_addr_t addr; kmemcheck_mark_initialized(ptr, size); BUG_ON(!valid_dma_direction(dir)); addr = ops->map_page(dev, virt_to_page(ptr), offset_in_page(ptr), size, dir, attrs); debug_dma_map_page(dev, virt_to_page(ptr), offset_in_page(ptr), size, dir, addr, true); return addr; }

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static inline void dma_unmap_single_attrs(struct device *dev, dma_addr_t addr, size_t size, enum dma_data_direction dir, struct dma_attrs *attrs) { struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!valid_dma_direction(dir)); if (ops->unmap_page) ops->unmap_page(dev, addr, size, dir, attrs); debug_dma_unmap_page(dev, addr, size, dir, true); }

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/* * dma_maps_sg_attrs returns 0 on error and > 0 on success. * It should never return a value < 0. */
static inline int dma_map_sg_attrs(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir, struct dma_attrs *attrs) { struct dma_map_ops *ops = get_dma_ops(dev); int i, ents; struct scatterlist *s; for_each_sg(sg, s, nents, i) kmemcheck_mark_initialized(sg_virt(s), s->length); BUG_ON(!valid_dma_direction(dir)); ents = ops->map_sg(dev, sg, nents, dir, attrs); BUG_ON(ents < 0); debug_dma_map_sg(dev, sg, nents, ents, dir); return ents; }

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static inline void dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir, struct dma_attrs *attrs) { struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!valid_dma_direction(dir)); debug_dma_unmap_sg(dev, sg, nents, dir); if (ops->unmap_sg) ops->unmap_sg(dev, sg, nents, dir, attrs); }

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static inline dma_addr_t dma_map_page(struct device *dev, struct page *page, size_t offset, size_t size, enum dma_data_direction dir) { struct dma_map_ops *ops = get_dma_ops(dev); dma_addr_t addr; kmemcheck_mark_initialized(page_address(page) + offset, size); BUG_ON(!valid_dma_direction(dir)); addr = ops->map_page(dev, page, offset, size, dir, NULL); debug_dma_map_page(dev, page, offset, size, dir, addr, false); return addr; }

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static inline void dma_unmap_page(struct device *dev, dma_addr_t addr, size_t size, enum dma_data_direction dir) { struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!valid_dma_direction(dir)); if (ops->unmap_page) ops->unmap_page(dev, addr, size, dir, NULL); debug_dma_unmap_page(dev, addr, size, dir, false); }

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static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr, size_t size, enum dma_data_direction dir) { struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!valid_dma_direction(dir)); if (ops->sync_single_for_cpu) ops->sync_single_for_cpu(dev, addr, size, dir); debug_dma_sync_single_for_cpu(dev, addr, size, dir); }

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static inline void dma_sync_single_for_device(struct device *dev, dma_addr_t addr, size_t size, enum dma_data_direction dir) { struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!valid_dma_direction(dir)); if (ops->sync_single_for_device) ops->sync_single_for_device(dev, addr, size, dir); debug_dma_sync_single_for_device(dev, addr, size, dir); }

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static inline void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t addr, unsigned long offset, size_t size, enum dma_data_direction dir) { const struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!valid_dma_direction(dir)); if (ops->sync_single_for_cpu) ops->sync_single_for_cpu(dev, addr + offset, size, dir); debug_dma_sync_single_range_for_cpu(dev, addr, offset, size, dir); }

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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) { const struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!valid_dma_direction(dir)); if (ops->sync_single_for_device) ops->sync_single_for_device(dev, addr + offset, size, dir); debug_dma_sync_single_range_for_device(dev, addr, offset, size, dir); }

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static inline void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems, enum dma_data_direction dir) { struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!valid_dma_direction(dir)); if (ops->sync_sg_for_cpu) ops->sync_sg_for_cpu(dev, sg, nelems, dir); debug_dma_sync_sg_for_cpu(dev, sg, nelems, dir); }

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static inline void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems, enum dma_data_direction dir) { struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!valid_dma_direction(dir)); if (ops->sync_sg_for_device) ops->sync_sg_for_device(dev, sg, nelems, dir); debug_dma_sync_sg_for_device(dev, sg, nelems, dir); }

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#define dma_map_single(d, a, s, r) dma_map_single_attrs(d, a, s, r, NULL) #define dma_unmap_single(d, a, s, r) dma_unmap_single_attrs(d, a, s, r, NULL) #define dma_map_sg(d, s, n, r) dma_map_sg_attrs(d, s, n, r, NULL) #define dma_unmap_sg(d, s, n, r) dma_unmap_sg_attrs(d, s, n, r, NULL) extern int dma_common_mmap(struct device *dev, struct vm_area_struct *vma, void *cpu_addr, dma_addr_t dma_addr, size_t size); void *dma_common_contiguous_remap(struct page *page, size_t size, unsigned long vm_flags, pgprot_t prot, const void *caller); void *dma_common_pages_remap(struct page **pages, size_t size, unsigned long vm_flags, pgprot_t prot, const void *caller); void dma_common_free_remap(void *cpu_addr, size_t size, unsigned long vm_flags); /** * dma_mmap_attrs - map a coherent DMA allocation into user space * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices * @vma: vm_area_struct describing requested user mapping * @cpu_addr: kernel CPU-view address returned from dma_alloc_attrs * @handle: device-view address returned from dma_alloc_attrs * @size: size of memory originally requested in dma_alloc_attrs * @attrs: attributes of mapping properties requested in dma_alloc_attrs * * Map a coherent DMA buffer previously allocated by dma_alloc_attrs * into user space. The coherent DMA buffer must not be freed by the * driver until the user space mapping has been released. */
static inline int dma_mmap_attrs(struct device *dev, struct vm_area_struct *vma, void *cpu_addr, dma_addr_t dma_addr, size_t size, struct dma_attrs *attrs) { struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!ops); if (ops->mmap) return ops->mmap(dev, vma, cpu_addr, dma_addr, size, attrs); return dma_common_mmap(dev, vma, cpu_addr, dma_addr, size); }

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#define dma_mmap_coherent(d, v, c, h, s) dma_mmap_attrs(d, v, c, h, s, NULL) int dma_common_get_sgtable(struct device *dev, struct sg_table *sgt, void *cpu_addr, dma_addr_t dma_addr, size_t size);
static inline int dma_get_sgtable_attrs(struct device *dev, struct sg_table *sgt, void *cpu_addr, dma_addr_t dma_addr, size_t size, struct dma_attrs *attrs) { struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!ops); if (ops->get_sgtable) return ops->get_sgtable(dev, sgt, cpu_addr, dma_addr, size, attrs); return dma_common_get_sgtable(dev, sgt, cpu_addr, dma_addr, size); }

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#define dma_get_sgtable(d, t, v, h, s) dma_get_sgtable_attrs(d, t, v, h, s, NULL) #ifndef arch_dma_alloc_attrs #define arch_dma_alloc_attrs(dev, flag) (true) #endif
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 *ops = get_dma_ops(dev); void *cpu_addr; BUG_ON(!ops); if (dma_alloc_from_coherent(dev, size, dma_handle, &cpu_addr)) return cpu_addr; if (!arch_dma_alloc_attrs(&dev, &flag)) return NULL; if (!ops->alloc) return NULL; cpu_addr = ops->alloc(dev, size, dma_handle, flag, attrs); debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr); return cpu_addr; }

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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 *ops = get_dma_ops(dev); BUG_ON(!ops); WARN_ON(irqs_disabled()); if (dma_release_from_coherent(dev, get_order(size), cpu_addr)) return; if (!ops->free || !cpu_addr) return; debug_dma_free_coherent(dev, size, cpu_addr, dma_handle); ops->free(dev, size, cpu_addr, dma_handle, attrs); }

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static inline void *dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flag) { return dma_alloc_attrs(dev, size, dma_handle, flag, NULL); }

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static inline void dma_free_coherent(struct device *dev, size_t size, void *cpu_addr, dma_addr_t dma_handle) { return dma_free_attrs(dev, size, cpu_addr, dma_handle, NULL); }

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static inline void *dma_alloc_noncoherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp) { DEFINE_DMA_ATTRS(attrs); dma_set_attr(DMA_ATTR_NON_CONSISTENT, &attrs); return dma_alloc_attrs(dev, size, dma_handle, gfp, &attrs); }

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static inline void dma_free_noncoherent(struct device *dev, size_t size, void *cpu_addr, dma_addr_t dma_handle) { DEFINE_DMA_ATTRS(attrs); dma_set_attr(DMA_ATTR_NON_CONSISTENT, &attrs); dma_free_attrs(dev, size, cpu_addr, dma_handle, &attrs); }

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static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) { debug_dma_mapping_error(dev, dma_addr); if (get_dma_ops(dev)->mapping_error) return get_dma_ops(dev)->mapping_error(dev, dma_addr); #ifdef DMA_ERROR_CODE return dma_addr == DMA_ERROR_CODE; #else return 0; #endif }

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#ifndef HAVE_ARCH_DMA_SUPPORTED
static inline int dma_supported(struct device *dev, u64 mask) { struct dma_map_ops *ops = get_dma_ops(dev); if (!ops) return 0; if (!ops->dma_supported) return 1; return ops->dma_supported(dev, mask); }

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#endif #ifndef HAVE_ARCH_DMA_SET_MASK
static inline int dma_set_mask(struct device *dev, u64 mask) { struct dma_map_ops *ops = get_dma_ops(dev); if (ops->set_dma_mask) return ops->set_dma_mask(dev, mask); if (!dev->dma_mask || !dma_supported(dev, mask)) return -EIO; *dev->dma_mask = mask; return 0; }

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#endif
static inline u64 dma_get_mask(struct device *dev) { if (dev && dev->dma_mask && *dev->dma_mask) return *dev->dma_mask; return DMA_BIT_MASK(32); }

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#ifdef CONFIG_ARCH_HAS_DMA_SET_COHERENT_MASK int dma_set_coherent_mask(struct device *dev, u64 mask); #else
static inline int dma_set_coherent_mask(struct device *dev, u64 mask) { if (!dma_supported(dev, mask)) return -EIO; dev->coherent_dma_mask = mask; return 0; }

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#endif /* * Set both the DMA mask and the coherent DMA mask to the same thing. * Note that we don't check the return value from dma_set_coherent_mask() * as the DMA API guarantees that the coherent DMA mask can be set to * the same or smaller than the streaming DMA mask. */
static inline int dma_set_mask_and_coherent(struct device *dev, u64 mask) { int rc = dma_set_mask(dev, mask); if (rc == 0) dma_set_coherent_mask(dev, mask); return rc; }

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/* * Similar to the above, except it deals with the case where the device * does not have dev->dma_mask appropriately setup. */
static inline int dma_coerce_mask_and_coherent(struct device *dev, u64 mask) { dev->dma_mask = &dev->coherent_dma_mask; return dma_set_mask_and_coherent(dev, mask); }

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extern u64 dma_get_required_mask(struct device *dev); #ifndef arch_setup_dma_ops
static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, const struct iommu_ops *iommu, bool coherent) { }

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#endif #ifndef arch_teardown_dma_ops
static inline void arch_teardown_dma_ops(struct device *dev) { }

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#endif
static inline unsigned int dma_get_max_seg_size(struct device *dev) { if (dev->dma_parms && dev->dma_parms->max_segment_size) return dev->dma_parms->max_segment_size; return SZ_64K; }

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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; } return -EIO; }

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static inline unsigned long dma_get_seg_boundary(struct device *dev) { if (dev->dma_parms && dev->dma_parms->segment_boundary_mask) return dev->dma_parms->segment_boundary_mask; return DMA_BIT_MASK(32); }

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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; } return -EIO; }

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#ifndef dma_max_pfn
static inline unsigned long dma_max_pfn(struct device *dev) { return *dev->dma_mask >> PAGE_SHIFT; }

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#endif
static inline void *dma_zalloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flag) { void *ret = dma_alloc_coherent(dev, size, dma_handle, flag | __GFP_ZERO); return ret; }

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#ifdef CONFIG_HAS_DMA
static inline int dma_get_cache_alignment(void) { #ifdef ARCH_DMA_MINALIGN return ARCH_DMA_MINALIGN; #endif return 1; }

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#endif /* 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 #ifdef CONFIG_HAVE_GENERIC_DMA_COHERENT int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr, dma_addr_t device_addr, size_t size, int flags); void dma_release_declared_memory(struct device *dev); void *dma_mark_declared_memory_occupied(struct device *dev, dma_addr_t device_addr, size_t size); #else
static inline int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr, dma_addr_t device_addr, size_t size, int flags) { return 0; }

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Total27100.00%2100.00%


static inline void dma_release_declared_memory(struct device *dev) { }

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static inline void * dma_mark_declared_memory_occupied(struct device *dev, dma_addr_t device_addr, size_t size) { return ERR_PTR(-EBUSY); }

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james bottomleyjames bottomley26100.00%2100.00%
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#endif /* CONFIG_HAVE_GENERIC_DMA_COHERENT */ /* * 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 CONFIG_HAVE_GENERIC_DMA_COHERENT extern int dmam_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr, dma_addr_t device_addr, size_t size, int flags); extern void dmam_release_declared_memory(struct device *dev); #else /* CONFIG_HAVE_GENERIC_DMA_COHERENT */
static inline int dmam_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr, dma_addr_t device_addr, size_t size, gfp_t gfp) { return 0; }

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tejun heotejun heo2592.59%150.00%
bjorn helgaasbjorn helgaas27.41%150.00%
Total27100.00%2100.00%


static inline void dmam_release_declared_memory(struct device *dev) { }

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tejun heotejun heo11100.00%1100.00%
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#endif /* CONFIG_HAVE_GENERIC_DMA_COHERENT */
static inline void *dma_alloc_wc(struct device *dev, size_t size, dma_addr_t *dma_addr, gfp_t gfp) { DEFINE_DMA_ATTRS(attrs); dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs); return dma_alloc_attrs(dev, size, dma_addr, gfp, &attrs); }

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thierry redingthierry reding5098.04%150.00%
luis r. rodriguezluis r. rodriguez11.96%150.00%
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#ifndef dma_alloc_writecombine #define dma_alloc_writecombine dma_alloc_wc #endif
static inline void dma_free_wc(struct device *dev, size_t size, void *cpu_addr, dma_addr_t dma_addr) { DEFINE_DMA_ATTRS(attrs); dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs); return dma_free_attrs(dev, size, cpu_addr, dma_addr, &attrs); }

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thierry redingthierry reding4998.00%150.00%
luis r. rodriguezluis r. rodriguez12.00%150.00%
Total50100.00%2100.00%

#ifndef dma_free_writecombine #define dma_free_writecombine dma_free_wc #endif
static inline int dma_mmap_wc(struct device *dev, struct vm_area_struct *vma, void *cpu_addr, dma_addr_t dma_addr, size_t size) { DEFINE_DMA_ATTRS(attrs); dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs); return dma_mmap_attrs(dev, vma, cpu_addr, dma_addr, size, &attrs); }

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thierry redingthierry reding5698.25%150.00%
luis r. rodriguezluis r. rodriguez11.75%150.00%
Total57100.00%2100.00%

#ifndef dma_mmap_writecombine #define dma_mmap_writecombine dma_mmap_wc #endif #ifdef CONFIG_NEED_DMA_MAP_STATE #define DEFINE_DMA_UNMAP_ADDR(ADDR_NAME) dma_addr_t ADDR_NAME #define DEFINE_DMA_UNMAP_LEN(LEN_NAME) __u32 LEN_NAME #define dma_unmap_addr(PTR, ADDR_NAME) ((PTR)->ADDR_NAME) #define dma_unmap_addr_set(PTR, ADDR_NAME, VAL) (((PTR)->ADDR_NAME) = (VAL)) #define dma_unmap_len(PTR, LEN_NAME) ((PTR)->LEN_NAME) #define dma_unmap_len_set(PTR, LEN_NAME, VAL) (((PTR)->LEN_NAME) = (VAL)) #else #define DEFINE_DMA_UNMAP_ADDR(ADDR_NAME) #define DEFINE_DMA_UNMAP_LEN(LEN_NAME) #define dma_unmap_addr(PTR, ADDR_NAME) (0) #define dma_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0) #define dma_unmap_len(PTR, LEN_NAME) (0) #define dma_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0) #endif #endif

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christoph hellwigchristoph hellwig224560.69%24.00%
fujita tomonorifujita tomonori65217.63%1020.00%
tejun heotejun heo1554.19%12.00%
thierry redingthierry reding1554.19%12.00%
james bottomleyjames bottomley1173.16%612.00%
russell kingrussell king752.03%24.00%
marek szyprowskimarek szyprowski681.84%36.00%
andrew mortonandrew morton471.27%24.00%
santosh shilimkarsantosh shilimkar381.03%24.00%
will deaconwill deacon340.92%24.00%
robin murphyrobin murphy330.89%24.00%
luis r. rodriguezluis r. rodriguez300.81%12.00%
bjorn helgaasbjorn helgaas70.19%24.00%
geliang tanggeliang tang60.16%12.00%
christian borntraegerchristian borntraeger50.14%12.00%
heiko carstensheiko carstens50.14%12.00%
yang hongyangyang hongyang40.11%12.00%
alexey dobriyanalexey dobriyan30.08%12.00%
nicolas pitrenicolas pitre30.08%12.00%
rolf eike beerrolf eike beer30.08%12.00%
milton d. millermilton d. miller30.08%12.00%
zhen leizhen lei30.08%12.00%
dan williamsdan williams20.05%12.00%
joe perchesjoe perches20.05%12.00%
robert p. j. dayrobert p. j. day20.05%12.00%
ricardo ribaldaricardo ribalda10.03%12.00%
rob herringrob herring10.03%12.00%
Total3699100.00%50100.00%
Directory: include/linux
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