RTEMS: bsps/riscv/riscv/include/bsp/fe310-uart.h Source File

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fe310-uart.h
1/*
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (C) 2019 Pragnesh Patel <pragnesh.patel@sifive.com>
5 * Copyright (c) 2019 Sachin Ghadi <sachin.ghadi@sifive.com>
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef FE310_UART_H
30#define FE310_UART_H
31
32#define TXRXREADY (1 << 31)
33
34#include <rtems/termiostypes.h>
35#include <rtems/irq.h>
36
37 typedef struct {
38 uint32_t txdata;
39 uint32_t rxdata;
40 uint32_t txctrl;
41 uint32_t rxctrl;
42 uint32_t ie;
43 uint32_t ip;
44 uint32_t div;
45} fe310_uart_t;
46
47/* Low-level driver specific data structure */
48 typedef struct {
49 rtems_termios_device_context base;
50 const char *device_name;
51 volatile fe310_uart_t *regs;
52} fe310_uart_context;
53
54int fe310_uart_read(rtems_termios_device_context *base);
55void fe310_console_putchar(rtems_termios_device_context * context,char c);
56
57extern const rtems_termios_device_handler fe310_uart_handler;
58
59extern fe310_uart_context driver_context;
60
61#endif /* FE310_UART_H */
irq.h
fe310_uart_context
Definition: fe310-uart.h:48
fe310_uart_t
Definition: fe310-uart.h:37
rtems_termios_device_context
Termios device context.
Definition: termiostypes.h:75
rtems_termios_device_handler
Termios device handler.
Definition: termiostypes.h:141
ie
unsigned ie
Definition: tte.h:3
termiostypes.h