1 /* 2 * Copyright (c) 2008-2015 Travis Geiselbrecht 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining 5 * a copy of this software and associated documentation files 6 * (the "Software"), to deal in the Software without restriction, 7 * including without limitation the rights to use, copy, modify, merge, 8 * publish, distribute, sublicense, and/or sell copies of the Software, 9 * and to permit persons to whom the Software is furnished to do so, 10 * subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be 13 * included in all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 19 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 20 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 21 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 22 */ 23 #ifndef __DEV_UART_H 24 #define __DEV_UART_H 25 26 #include <stdbool.h> 27 #include <sys/types.h> 28 29 void uart_init(void); 30 void uart_init_early(void); 31 32 int uart_putc(int port, char c); 33 int uart_getc(int port, bool wait); 34 void uart_flush_tx(int port); 35 void uart_flush_rx(int port); 36 void uart_init_port(int port, uint baud); 37 38 /* panic-time uart accessors, intended to be run with interrupts disabled */ 39 int uart_pputc(int port, char c); 40 int uart_pgetc(int port); 41 42 #endif 43 44