1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2012 Adrian Chadd <adrian@FreeBSD.org>
5 * All rights reserved.
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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * 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 AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31 /*
32 * Atheros AR933x SoC UART registers
33 */
34 #ifndef __AR933X_UART_H__
35 #define __AR933X_UART_H__
36
37 #define AR933X_UART_REGS_SIZE 20
38 #define AR933X_UART_FIFO_SIZE 16
39
40 #define AR933X_UART_DATA_REG 0x00
41 #define AR933X_UART_CS_REG 0x04
42 #define AR933X_UART_CLOCK_REG 0x08
43 #define AR933X_UART_INT_REG 0x0c
44 #define AR933X_UART_INT_EN_REG 0x10
45
46 #define AR933X_UART_DATA_TX_RX_MASK 0xff
47 #define AR933X_UART_DATA_RX_CSR (1 << 8)
48 #define AR933X_UART_DATA_TX_CSR (1 << 9)
49
50 #define AR933X_UART_CS_PARITY_S 0
51 #define AR933X_UART_CS_PARITY_M 0x3
52 #define AR933X_UART_CS_PARITY_NONE 0
53 #define AR933X_UART_CS_PARITY_ODD 1
54 #define AR933X_UART_CS_PARITY_EVEN 2
55 #define AR933X_UART_CS_IF_MODE_S 2
56 #define AR933X_UART_CS_IF_MODE_M 0x3
57 #define AR933X_UART_CS_IF_MODE_NONE 0
58 #define AR933X_UART_CS_IF_MODE_DTE 1
59 #define AR933X_UART_CS_IF_MODE_DCE 2
60 #define AR933X_UART_CS_FLOW_CTRL_S 4
61 #define AR933X_UART_CS_FLOW_CTRL_M 0x3
62 #define AR933X_UART_CS_DMA_EN (1 << 6)
63 #define AR933X_UART_CS_TX_READY_ORIDE (1 << 7)
64 #define AR933X_UART_CS_RX_READY_ORIDE (1 << 8)
65 #define AR933X_UART_CS_TX_READY (1 << 9)
66 #define AR933X_UART_CS_RX_BREAK (1 << 10)
67 #define AR933X_UART_CS_TX_BREAK (1 << 11)
68 #define AR933X_UART_CS_HOST_INT (1 << 12)
69 #define AR933X_UART_CS_HOST_INT_EN (1 << 13)
70 #define AR933X_UART_CS_TX_BUSY (1 << 14)
71 #define AR933X_UART_CS_RX_BUSY (1 << 15)
72
73 #define AR933X_UART_CLOCK_SCALE_M 0xff
74 #define AR933X_UART_CLOCK_SCALE_S 16
75 #define AR933X_UART_CLOCK_STEP_M 0xffff
76 #define AR933X_UART_CLOCK_STEP_S 0
77
78 #define AR933X_UART_MAX_SCALE 0xff
79 #define AR933X_UART_MAX_STEP 0xffff
80
81 #define AR933X_UART_INT_RX_VALID (1 << 0)
82 #define AR933X_UART_INT_TX_READY (1 << 1)
83 #define AR933X_UART_INT_RX_FRAMING_ERR (1 << 2)
84 #define AR933X_UART_INT_RX_OFLOW_ERR (1 << 3)
85 #define AR933X_UART_INT_TX_OFLOW_ERR (1 << 4)
86 #define AR933X_UART_INT_RX_PARITY_ERR (1 << 5)
87 #define AR933X_UART_INT_RX_BREAK_ON (1 << 6)
88 #define AR933X_UART_INT_RX_BREAK_OFF (1 << 7)
89 #define AR933X_UART_INT_RX_FULL (1 << 8)
90 #define AR933X_UART_INT_TX_EMPTY (1 << 9)
91 #define AR933X_UART_INT_ALLINTS 0x3ff
92
93 #endif /* __AR933X_UART_H__ */
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