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