RT2560_TX_DESC_SIZE
(void) ddi_dma_sync(dr->dr_hnd, 0, count * RT2560_TX_DESC_SIZE,
(void) ddi_dma_sync(dr->dr_hnd, 0, count * RT2560_TX_DESC_SIZE,
(void) ddi_dma_sync(dr->dr_hnd, 0, count * RT2560_TX_DESC_SIZE,
(void) ddi_dma_sync(dr->dr_hnd, 0, count * RT2560_TX_DESC_SIZE,
(void) ddi_dma_sync(dr->dr_hnd, 0, count * RT2560_TX_DESC_SIZE,
(void) ddi_dma_sync(dr->dr_hnd, idx * RT2560_TX_DESC_SIZE,
RT2560_TX_DESC_SIZE, DDI_DMA_SYNC_FORDEV);
(void) ddi_dma_sync(dr->dr_hnd, idx * RT2560_TX_DESC_SIZE,
RT2560_TX_DESC_SIZE, DDI_DMA_SYNC_FORDEV);
RT2560_TX_DESC_SIZE;