static int dma_iommu_map_sg(struct device *dev, struct scatterlist *sglist,
int nelems, enum dma_data_direction direction,
struct dma_attrs *attrs)
{
return iommu_map_sg(dev, dev->archdata.dma_data, sglist, nelems,
device_to_mask(dev), direction, attrs);
}
/* Allocates a contiguous real buffer and creates mappings over it.
* Returns the virtual address of the buffer and sets dma_handle
* to the dma address (mapping) of the first page.
*/
static void *dma_iommu_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag)
{
return iommu_alloc_coherent(dev, dev->archdata.dma_data, size,
dma_handle, device_to_mask(dev), flag,
dev_to_node(dev));
}
/* Allocates a contiguous real buffer and creates mappings over it.
* Returns the virtual address of the buffer and sets dma_handle
* to the dma address (mapping) of the first page.
*/
static void *dma_iommu_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag)
{
return iommu_alloc_coherent(dev, get_iommu_table_base(dev), size,
dma_handle, device_to_mask(dev), flag,
dev_to_node(dev));
}
/* Allocates a contiguous real buffer and creates mappings over it.
* Returns the virtual address of the buffer and sets dma_handle
* to the dma address (mapping) of the first page.
*/
static void *pci_iommu_alloc_coherent(struct device *hwdev, size_t size,
dma_addr_t *dma_handle, gfp_t flag)
{
return iommu_alloc_coherent(device_to_table(hwdev), size, dma_handle,
device_to_mask(hwdev), flag,
pcibus_to_node(to_pci_dev(hwdev)->bus));
}
/* Creates TCEs for a user provided buffer. The user buffer must be
* contiguous real kernel storage (not vmalloc). The address passed here
* comprises a page address and offset into that page. The dma_addr_t
* returned will point to the same byte within the page as was passed in.
*/
static dma_addr_t dma_iommu_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction direction,
struct dma_attrs *attrs)
{
return iommu_map_page(dev, dev->archdata.dma_data, page, offset, size,
device_to_mask(dev), direction, attrs);
}
static int pci_iommu_map_sg(struct device *pdev, struct scatterlist *sglist,
int nelems, enum dma_data_direction direction)
{
return iommu_map_sg(pdev, devnode_table(pdev), sglist,
nelems, device_to_mask(pdev), direction);
}
/* Creates TCEs for a user provided buffer. The user buffer must be
* contiguous real kernel storage (not vmalloc). The address of the buffer
* passed here is the kernel (virtual) address of the buffer. The buffer
* need not be page aligned, the dma_addr_t returned will point to the same
* byte within the page as vaddr.
*/
static dma_addr_t pci_iommu_map_single(struct device *hwdev, void *vaddr,
size_t size, enum dma_data_direction direction)
{
return iommu_map_single(devnode_table(hwdev), vaddr, size,
device_to_mask(hwdev), direction);
}
/* Allocates a contiguous real buffer and creates mappings over it.
* Returns the virtual address of the buffer and sets dma_handle
* to the dma address (mapping) of the first page.
*/
static void *ofdev_iommu_alloc_coherent(struct device *hwdev, size_t size,
dma_addr_t *dma_handle, gfp_t flag)
{
return iommu_alloc_coherent(device_to_table(hwdev), size, dma_handle,
device_to_mask(hwdev), flag, device_to_node(hwdev));
}