diff options
Diffstat (limited to 'arch/mips/mm/dma-noncoherent.c')
| -rw-r--r-- | arch/mips/mm/dma-noncoherent.c | 32 |
1 files changed, 9 insertions, 23 deletions
diff --git a/arch/mips/mm/dma-noncoherent.c b/arch/mips/mm/dma-noncoherent.c index b01b9a3e424f..e6c9485cadcf 100644 --- a/arch/mips/mm/dma-noncoherent.c +++ b/arch/mips/mm/dma-noncoherent.c @@ -66,33 +66,19 @@ void arch_dma_free(struct device *dev, size_t size, void *cpu_addr, dma_direct_free_pages(dev, size, cpu_addr, dma_addr, attrs); } -int arch_dma_mmap(struct device *dev, struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t dma_addr, size_t size, - unsigned long attrs) +long arch_dma_coherent_to_pfn(struct device *dev, void *cpu_addr, + dma_addr_t dma_addr) { - unsigned long user_count = vma_pages(vma); - unsigned long count = PAGE_ALIGN(size) >> PAGE_SHIFT; unsigned long addr = CAC_ADDR((unsigned long)cpu_addr); - unsigned long off = vma->vm_pgoff; - unsigned long pfn = page_to_pfn(virt_to_page((void *)addr)); - int ret = -ENXIO; + return page_to_pfn(virt_to_page((void *)addr)); +} +pgprot_t arch_dma_mmap_pgprot(struct device *dev, pgprot_t prot, + unsigned long attrs) +{ if (attrs & DMA_ATTR_WRITE_COMBINE) - vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); - else - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); - - if (dma_mmap_from_dev_coherent(dev, vma, cpu_addr, size, &ret)) - return ret; - - if (off < count && user_count <= (count - off)) { - ret = remap_pfn_range(vma, vma->vm_start, - pfn + off, - user_count << PAGE_SHIFT, - vma->vm_page_prot); - } - - return ret; + return pgprot_writecombine(prot); + return pgprot_noncached(prot); } static inline void dma_sync_virt(void *addr, size_t size, |