2 * Dynamic DMA mapping support.
4 * On i386 there is no hardware dynamic DMA address translation,
5 * so consistent alloc/free are merely page allocation/freeing.
6 * The rest of the dynamic DMA mapping interface is implemented
10 #include <linux/types.h>
12 #include <linux/string.h>
13 #include <linux/pci.h>
16 void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
17 dma_addr_t *dma_handle)
22 if (hwdev == NULL || ((u32)hwdev->dma_mask < 0xffffffff))
24 ret = (void *)__get_free_pages(gfp, get_order(size));
28 *dma_handle = virt_to_bus(ret);
33 void pci_free_consistent(struct pci_dev *hwdev, size_t size,
34 void *vaddr, dma_addr_t dma_handle)
36 free_pages((unsigned long)vaddr, get_order(size));