USBA_BFEXT
pkt_len = USBA_BFEXT(BYTE_COUNT, usba_ep_readl(ep, STA));
dma_status = USBA_BFEXT(DMA_INT, status);
ep_status = USBA_BFEXT(EPT_INT, status);
nr_busy = USBA_BFEXT(BUSY_BANKS, status);
bytecount = USBA_BFEXT(BYTE_COUNT, status);
nr_busy = USBA_BFEXT(BUSY_BANKS, status);
req->req.actual = req->req.length - USBA_BFEXT(DMA_BUF_LEN, status);
return USBA_BFEXT(BYTE_COUNT, usba_ep_readl(ep, STA));
return USBA_BFEXT(FRAME_NUMBER, usba_readl(udc, FNUM));