static int tegra_ehci_map_urb_for_dma(struct usb_hcd *hcd,
struct urb *urb, gfp_t mem_flags)
{
int ret;
ret = alloc_align_buffer(urb, mem_flags);
if (ret)
return ret;
ret = usb_hcd_map_urb_for_dma(hcd, urb, mem_flags);
/* Control packets over dma */
if (urb->setup_dma)
dma_sync_single_for_device(hcd->self.controller,
urb->setup_dma, sizeof(struct usb_ctrlrequest),
DMA_TO_DEVICE);
/* urb buffers over dma */
if (urb->transfer_dma) {
enum dma_data_direction dir;
dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
dma_sync_single_for_device(hcd->self.controller,
urb->transfer_dma, urb->transfer_buffer_length, dir);
}
if (ret)
free_align_buffer(urb);
return ret;
}
static void tegra_ehci_unmap_urb_for_dma(struct usb_hcd *hcd,
struct urb *urb)
{
usb_hcd_unmap_urb_for_dma(hcd, urb);
free_align_buffer(urb);
if (urb->transfer_dma) {
enum dma_data_direction dir;
dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
if (dir == DMA_FROM_DEVICE)
dma_sync_single_for_cpu(hcd->self.controller,
urb->transfer_dma, urb->transfer_buffer_length,
DMA_FROM_DEVICE);
}
}
static int tegra_ehci_map_urb_for_dma(struct usb_hcd *hcd,
struct urb *urb, gfp_t mem_flags)
{
int ret;
ret = alloc_align_buffer(urb, mem_flags, hcd);
if (ret)
return ret;
ret = usb_hcd_map_urb_for_dma(hcd, urb, mem_flags);
if (ret)
free_align_buffer(urb, hcd);
return ret;
}
static void tegra_ehci_unmap_urb_for_dma(struct usb_hcd *hcd,
struct urb *urb)
{
usb_hcd_unmap_urb_for_dma(hcd, urb);
free_align_buffer(urb, hcd);
}
