diff options
Diffstat (limited to 'arch/cris/arch-v32/drivers/pci/dma.c')
| -rw-r--r-- | arch/cris/arch-v32/drivers/pci/dma.c | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/arch/cris/arch-v32/drivers/pci/dma.c b/arch/cris/arch-v32/drivers/pci/dma.c deleted file mode 100644 index ee55578d9834..000000000000 --- a/arch/cris/arch-v32/drivers/pci/dma.c +++ /dev/null @@ -1,50 +0,0 @@ -/* - * Dynamic DMA mapping support. - * - * On cris there is no hardware dynamic DMA address translation, - * so consistent alloc/free are merely page allocation/freeing. - * The rest of the dynamic DMA mapping interface is implemented - * in asm/pci.h. - * - * Borrowed from i386. - */ - -#include <linux/types.h> -#include <linux/mm.h> -#include <linux/string.h> -#include <linux/pci.h> -#include <linux/gfp.h> -#include <asm/io.h> - -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp) -{ - void *ret; - int order = get_order(size); - /* ignore region specifiers */ - gfp &= ~(__GFP_DMA | __GFP_HIGHMEM); - - if (dma_alloc_from_coherent(dev, size, dma_handle, &ret)) - return ret; - - if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff)) - gfp |= GFP_DMA; - - ret = (void *)__get_free_pages(gfp, order); - - if (ret != NULL) { - memset(ret, 0, size); - *dma_handle = virt_to_phys(ret); - } - return ret; -} - -void dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle) -{ - int order = get_order(size); - - if (!dma_release_from_coherent(dev, order, vaddr)) - free_pages((unsigned long)vaddr, order); -} - |
