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 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;
}
/*
* Allocate a URB and initialize the various fields of it.
* This API is used by the single_step_set_feature test of
* EHSET where IN packet of the GetDescriptor request is
* sent 15secs after the SETUP packet.
* Return NULL if failed.
*/
static struct urb *xhci_request_single_step_set_feature_urb(
struct usb_device *udev,
void *dr,
void *buf,
struct completion *done)
{
struct urb *urb;
struct usb_hcd *hcd = bus_to_hcd(udev->bus);
struct usb_host_endpoint *ep;
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb)
return NULL;
urb->pipe = usb_rcvctrlpipe(udev, 0);
ep = udev->ep_in[usb_pipeendpoint(urb->pipe)];
if (!ep) {
usb_free_urb(urb);
return NULL;
}
/*
* Initialize the various URB fields as these are used by the HCD
* driver to queue it and as well as when completion happens.
*/
urb->ep = ep;
urb->dev = udev;
urb->setup_packet = dr;
urb->transfer_buffer = buf;
urb->transfer_buffer_length = USB_DT_DEVICE_SIZE;
urb->complete = xhci_single_step_completion;
urb->status = -EINPROGRESS;
urb->actual_length = 0;
urb->transfer_flags = URB_DIR_IN;
usb_get_urb(urb);
atomic_inc(&urb->use_count);
atomic_inc(&urb->dev->urbnum);
usb_hcd_map_urb_for_dma(hcd, urb, GFP_KERNEL);
urb->context = done;
return urb;
}
int sunxi_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
gfp_t mem_flags)
{
int ret;
ret = sunxi_hcd_alloc_temp_buffer(urb, mem_flags);
if (ret)
return ret;
ret = sunxi_hcd_alloc_temp_setup(urb, mem_flags);
if (ret) {
sunxi_hcd_free_temp_buffer(urb);
return ret;
}
ret = usb_hcd_map_urb_for_dma(hcd, urb, mem_flags);
if (ret) {
sunxi_hcd_free_temp_setup(urb);
sunxi_hcd_free_temp_buffer(urb);
return ret;
}
return ret;
}
