27 	struct serial_device* uart = (struct serial_device*) dev->user_data;  in rt_serial_init()  local
34 			rt_memset(uart->int_rx->rx_buffer, 0,   in rt_serial_init()
35 				sizeof(uart->int_rx->rx_buffer));  in rt_serial_init()
36 			uart->int_rx->read_index = uart->int_rx->save_index = 0;  in rt_serial_init()
41 			rt_memset(uart->int_tx->tx_buffer, 0,   in rt_serial_init()
42 				sizeof(uart->int_tx->tx_buffer));  in rt_serial_init()
43 			uart->int_tx->write_index = uart->int_tx->save_index = 0;  in rt_serial_init()
53 static void rt_serial_savechar(struct serial_device* uart, char ch)  in rt_serial_savechar()  argument
60 	uart->int_rx->rx_buffer[uart->int_rx->save_index] = ch;  in rt_serial_savechar()
61 	uart->int_rx->save_index ++;  in rt_serial_savechar()
62 	if (uart->int_rx->save_index >= UART_RX_BUFFER_SIZE)  in rt_serial_savechar()
63 		uart->int_rx->save_index = 0;  in rt_serial_savechar()
66 	if (uart->int_rx->save_index == uart->int_rx->read_index)  in rt_serial_savechar()
68 		uart->int_rx->read_index ++;  in rt_serial_savechar()
69 		if (uart->int_rx->read_index >= UART_RX_BUFFER_SIZE)  in rt_serial_savechar()
70 			uart->int_rx->read_index = 0;  in rt_serial_savechar()
93 	struct serial_device* uart;  in rt_serial_read()  local
97 	uart = (struct serial_device*)dev->user_data;  in rt_serial_read()
106 			if (uart->int_rx->read_index != uart->int_rx->save_index)  in rt_serial_read()
108 				*ptr++ = uart->int_rx->rx_buffer[uart->int_rx->read_index];  in rt_serial_read()
114 				uart->int_rx->read_index ++;  in rt_serial_read()
115 				if (uart->int_rx->read_index >= UART_RX_BUFFER_SIZE)  in rt_serial_read()
116 					uart->int_rx->read_index = 0;  in rt_serial_read()
134 			while (uart->uart_device->lsr & USTAT_RCV_READY)  in rt_serial_read()
136 				*ptr = uart->uart_device->dlbl_fifo.txfifo & 0xff;  in rt_serial_read()
151 	struct serial_device* uart;  in rt_serial_write()  local
155 	uart = (struct serial_device*)dev->user_data;  in rt_serial_write()
160 		while (uart->int_tx->save_index != uart->int_tx->write_index)  in rt_serial_write()
163 			uart->int_tx->tx_buffer[uart->int_tx->save_index] = *ptr++;  in rt_serial_write()
168 			uart->int_tx->save_index ++;  in rt_serial_write()
171 			if (uart->int_tx->save_index >= UART_TX_BUFFER_SIZE)  in rt_serial_write()
172 				uart->int_tx->save_index = 0;  in rt_serial_write()
190 				while (!(uart->uart_device->lsr & USTAT_TXB_EMPTY));  in rt_serial_write()
191 				uart->uart_device->dlbl_fifo.txfifo = '\r';  in rt_serial_write()
194 			while (!(uart->uart_device->lsr & USTAT_TXB_EMPTY));  in rt_serial_write()
195 			uart->uart_device->dlbl_fifo.txfifo = (*ptr & 0x1FF);  in rt_serial_write()
252 	struct serial_device* uart = (struct serial_device*) device->user_data;  in rt_hw_serial_isr()  local
258 	while (uart->uart_device->lsr & USTAT_RCV_READY)  in rt_hw_serial_isr()
260 		rt_serial_savechar(uart, uart->uart_device->dlbl_fifo.rxfifo & 0xff);  in rt_hw_serial_isr()
269 		rx_length = uart->int_rx->read_index > uart->int_rx->save_index ?  in rt_hw_serial_isr()
270 			UART_RX_BUFFER_SIZE - uart->int_rx->read_index + uart->int_rx->save_index :  in rt_hw_serial_isr()
271 			uart->int_rx->save_index - uart->int_rx->read_index;  in rt_hw_serial_isr()