651 	struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;  in atmel_tx_dma()  local
658 	xmit->tail += pdc->ofs;  in atmel_tx_dma()
661 	port->icount.tx += pdc->ofs;  in atmel_tx_dma()
662 	pdc->ofs = 0;  in atmel_tx_dma()
671 					   pdc->dma_addr,  in atmel_tx_dma()
672 					   pdc->dma_size,  in atmel_tx_dma()
676 		pdc->ofs = count;  in atmel_tx_dma()
678 		UART_PUT_TPR(port, pdc->dma_addr + xmit->tail);  in atmel_tx_dma()
767 	struct atmel_dma_buffer *pdc;  in atmel_rx_from_dma()  local
777 		pdc = &atmel_port->pdc_rx[rx_idx];  in atmel_rx_from_dma()
778 		head = UART_GET_RPR(port) - pdc->dma_addr;  in atmel_rx_from_dma()
779 		tail = pdc->ofs;  in atmel_rx_from_dma()
791 		head = min(head, pdc->dma_size);  in atmel_rx_from_dma()
794 			dma_sync_single_for_cpu(port->dev, pdc->dma_addr,  in atmel_rx_from_dma()
795 					pdc->dma_size, DMA_FROM_DEVICE);  in atmel_rx_from_dma()
805 			tty_insert_flip_string(tty, pdc->buf + pdc->ofs, count);  in atmel_rx_from_dma()
807 			dma_sync_single_for_device(port->dev, pdc->dma_addr,  in atmel_rx_from_dma()
808 					pdc->dma_size, DMA_FROM_DEVICE);  in atmel_rx_from_dma()
811 			pdc->ofs = head;  in atmel_rx_from_dma()
818 		if (head >= pdc->dma_size) {  in atmel_rx_from_dma()
819 			pdc->ofs = 0;  in atmel_rx_from_dma()
820 			UART_PUT_RNPR(port, pdc->dma_addr);  in atmel_rx_from_dma()
821 			UART_PUT_RNCR(port, pdc->dma_size);  in atmel_rx_from_dma()
826 	} while (head >= pdc->dma_size);  in atmel_rx_from_dma()
918 			struct atmel_dma_buffer *pdc = &atmel_port->pdc_rx[i];  in atmel_startup()  local
920 			pdc->buf = kmalloc(PDC_BUFFER_SIZE, GFP_KERNEL);  in atmel_startup()
921 			if (pdc->buf == NULL) {  in atmel_startup()
932 			pdc->dma_addr = dma_map_single(port->dev,  in atmel_startup()
933 						       pdc->buf,  in atmel_startup()
936 			pdc->dma_size = PDC_BUFFER_SIZE;  in atmel_startup()
937 			pdc->ofs = 0;  in atmel_startup()
949 		struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;  in atmel_startup()  local
952 		pdc->buf = xmit->buf;  in atmel_startup()
953 		pdc->dma_addr = dma_map_single(port->dev,  in atmel_startup()
954 					       pdc->buf,  in atmel_startup()
957 		pdc->dma_size = UART_XMIT_SIZE;  in atmel_startup()
958 		pdc->ofs = 0;  in atmel_startup()
1019 			struct atmel_dma_buffer *pdc = &atmel_port->pdc_rx[i];  in atmel_shutdown()  local
1022 					 pdc->dma_addr,  in atmel_shutdown()
1023 					 pdc->dma_size,  in atmel_shutdown()
1025 			kfree(pdc->buf);  in atmel_shutdown()
1029 		struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;  in atmel_shutdown()  local
1032 				 pdc->dma_addr,  in atmel_shutdown()
1033 				 pdc->dma_size,  in atmel_shutdown()