Release 4.16 arch/arm/include/asm/dma-direct.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef ASM_ARM_DMA_DIRECT_H
#define ASM_ARM_DMA_DIRECT_H 1
static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
{
unsigned int offset = paddr & ~PAGE_MASK;
return pfn_to_dma(dev, __phys_to_pfn(paddr)) + offset;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Christoph Hellwig | 37 | 100.00% | 1 | 100.00% |
| Total | 37 | 100.00% | 1 | 100.00% |
static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev_addr)
{
unsigned int offset = dev_addr & ~PAGE_MASK;
return __pfn_to_phys(dma_to_pfn(dev, dev_addr)) + offset;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Christoph Hellwig | 37 | 100.00% | 1 | 100.00% |
| Total | 37 | 100.00% | 1 | 100.00% |
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
{
u64 limit, mask;
if (!dev->dma_mask)
return 0;
mask = *dev->dma_mask;
limit = (mask + 1) & ~mask;
if (limit && size > limit)
return 0;
if ((addr | (addr + size - 1)) & ~mask)
return 0;
return 1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Christoph Hellwig | 85 | 100.00% | 1 | 100.00% |
| Total | 85 | 100.00% | 1 | 100.00% |
#endif /* ASM_ARM_DMA_DIRECT_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Christoph Hellwig | 170 | 100.00% | 1 | 100.00% |
| Total | 170 | 100.00% | 1 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.