Release 4.10 arch/x86/include/asm/dma-mapping.h
#ifndef _ASM_X86_DMA_MAPPING_H
#define _ASM_X86_DMA_MAPPING_H
/*
* IOMMU interface. See Documentation/DMA-API-HOWTO.txt and
* Documentation/DMA-API.txt for documentation.
*/
#include <linux/kmemcheck.h>
#include <linux/scatterlist.h>
#include <linux/dma-debug.h>
#include <asm/io.h>
#include <asm/swiotlb.h>
#include <linux/dma-contiguous.h>
#ifdef CONFIG_ISA
# define ISA_DMA_BIT_MASK DMA_BIT_MASK(24)
#else
# define ISA_DMA_BIT_MASK DMA_BIT_MASK(32)
#endif
#define DMA_ERROR_CODE 0
extern int iommu_merge;
extern struct device x86_dma_fallback_dev;
extern int panic_on_overflow;
extern struct dma_map_ops *dma_ops;
static inline struct dma_map_ops *get_dma_ops(struct device *dev)
{
#ifndef CONFIG_X86_DEV_DMA_OPS
return dma_ops;
#else
if (unlikely(!dev) || !dev->archdata.dma_ops)
return dma_ops;
else
return dev->archdata.dma_ops;
#endif
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| fujita tomonori | fujita tomonori | 47 | 94.00% | 2 | 66.67% |
| alessandro rubini | alessandro rubini | 3 | 6.00% | 1 | 33.33% |
| Total | 50 | 100.00% | 3 | 100.00% |
bool arch_dma_alloc_attrs(struct device **dev, gfp_t *gfp);
#define arch_dma_alloc_attrs arch_dma_alloc_attrs
#define HAVE_ARCH_DMA_SUPPORTED 1
extern int dma_supported(struct device *hwdev, u64 mask);
extern void *dma_generic_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_addr, gfp_t flag,
unsigned long attrs);
extern void dma_generic_free_coherent(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_addr,
unsigned long attrs);
#ifdef CONFIG_X86_DMA_REMAP /* Platform code defines bridge-specific code */
extern bool dma_capable(struct device *dev, dma_addr_t addr, size_t size);
extern dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr);
extern phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr);
#else
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
{
if (!dev->dma_mask)
return 0;
return addr + size - 1 <= *dev->dma_mask;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| fujita tomonori | fujita tomonori | 38 | 95.00% | 1 | 50.00% |
| jan beulich | jan beulich | 2 | 5.00% | 1 | 50.00% |
| Total | 40 | 100.00% | 2 | 100.00% |
static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
{
return paddr;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| fujita tomonori | fujita tomonori | 18 | 100.00% | 1 | 100.00% |
| Total | 18 | 100.00% | 1 | 100.00% |
static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)
{
return daddr;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| fujita tomonori | fujita tomonori | 18 | 100.00% | 1 | 100.00% |
| Total | 18 | 100.00% | 1 | 100.00% |
#endif /* CONFIG_X86_DMA_REMAP */
static inline void
dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction dir)
{
flush_write_buffers();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| glauber de oliveira costa | glauber de oliveira costa | 26 | 100.00% | 2 | 100.00% |
| Total | 26 | 100.00% | 2 | 100.00% |
static inline unsigned long dma_alloc_coherent_mask(struct device *dev,
gfp_t gfp)
{
unsigned long dma_mask = 0;
dma_mask = dev->coherent_dma_mask;
if (!dma_mask)
dma_mask = (gfp & GFP_DMA) ? DMA_BIT_MASK(24) : DMA_BIT_MASK(32);
return dma_mask;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| fujita tomonori | fujita tomonori | 43 | 79.63% | 1 | 25.00% |
| yang hongyang | yang hongyang | 8 | 14.81% | 2 | 50.00% |
| glauber de oliveira costa | glauber de oliveira costa | 3 | 5.56% | 1 | 25.00% |
| Total | 54 | 100.00% | 4 | 100.00% |
static inline gfp_t dma_alloc_coherent_gfp_flags(struct device *dev, gfp_t gfp)
{
unsigned long dma_mask = dma_alloc_coherent_mask(dev, gfp);
if (dma_mask <= DMA_BIT_MASK(24))
gfp |= GFP_DMA;
#ifdef CONFIG_X86_64
if (dma_mask <= DMA_BIT_MASK(32) && !(gfp & GFP_DMA))
gfp |= GFP_DMA32;
#endif
return gfp;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| fujita tomonori | fujita tomonori | 59 | 88.06% | 2 | 50.00% |
| yang hongyang | yang hongyang | 8 | 11.94% | 2 | 50.00% |
| Total | 67 | 100.00% | 4 | 100.00% |
#endif
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| fujita tomonori | fujita tomonori | 240 | 50.74% | 8 | 26.67% |
| glauber de oliveira costa | glauber de oliveira costa | 83 | 17.55% | 6 | 20.00% |
| alessandro rubini | alessandro rubini | 54 | 11.42% | 2 | 6.67% |
| marek szyprowski | marek szyprowski | 23 | 4.86% | 1 | 3.33% |
| christoph hellwig | christoph hellwig | 22 | 4.65% | 2 | 6.67% |
| jan beulich | jan beulich | 17 | 3.59% | 2 | 6.67% |
| yang hongyang | yang hongyang | 16 | 3.38% | 2 | 6.67% |
| joerg roedel | joerg roedel | 6 | 1.27% | 2 | 6.67% |
| krzysztof kozlowski | krzysztof kozlowski | 4 | 0.85% | 1 | 3.33% |
| vegard nossum | vegard nossum | 3 | 0.63% | 1 | 3.33% |
| andrzej pietrasiewicz | andrzej pietrasiewicz | 2 | 0.42% | 1 | 3.33% |
| h. peter anvin | h. peter anvin | 2 | 0.42% | 1 | 3.33% |
| paul bolle | paul bolle | 1 | 0.21% | 1 | 3.33% |
| Total | 473 | 100.00% | 30 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.