RT2560_RX_DESC_SIZE
hw /= RT2560_RX_DESC_SIZE;
tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE;
count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE,
count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr,