1 | /* SPDX-License-Identifier: GPL-1.0+ WITH Linux-syscall-note */ |
2 | /* |
3 | * include/linux/serial.h |
4 | * |
5 | * Copyright (C) 1992 by Theodore Ts'o. |
6 | * |
7 | * Redistribution of this file is permitted under the terms of the GNU |
8 | * Public License (GPL) |
9 | */ |
10 | |
11 | #ifndef _UAPI_LINUX_SERIAL_H |
12 | #define _UAPI_LINUX_SERIAL_H |
13 | |
14 | #include <linux/types.h> |
15 | |
16 | #include <linux/tty_flags.h> |
17 | |
18 | |
19 | struct serial_struct { |
20 | int type; |
21 | int line; |
22 | unsigned int port; |
23 | int irq; |
24 | int flags; |
25 | int xmit_fifo_size; |
26 | int custom_divisor; |
27 | int baud_base; |
28 | unsigned short close_delay; |
29 | char io_type; |
30 | char reserved_char[1]; |
31 | int hub6; |
32 | unsigned short closing_wait; /* time to wait before closing */ |
33 | unsigned short closing_wait2; /* no longer used... */ |
34 | unsigned char *iomem_base; |
35 | unsigned short iomem_reg_shift; |
36 | unsigned int port_high; |
37 | unsigned long iomap_base; /* cookie passed into ioremap */ |
38 | }; |
39 | |
40 | /* |
41 | * For the close wait times, 0 means wait forever for serial port to |
42 | * flush its output. 65535 means don't wait at all. |
43 | */ |
44 | #define ASYNC_CLOSING_WAIT_INF 0 |
45 | #define ASYNC_CLOSING_WAIT_NONE 65535 |
46 | |
47 | /* |
48 | * These are the supported serial types. |
49 | */ |
50 | #define PORT_UNKNOWN 0 |
51 | #define PORT_8250 1 |
52 | #define PORT_16450 2 |
53 | #define PORT_16550 3 |
54 | #define PORT_16550A 4 |
55 | #define PORT_CIRRUS 5 |
56 | #define PORT_16650 6 |
57 | #define PORT_16650V2 7 |
58 | #define PORT_16750 8 |
59 | #define PORT_STARTECH 9 |
60 | #define PORT_16C950 10 /* Oxford Semiconductor */ |
61 | #define PORT_16654 11 |
62 | #define PORT_16850 12 |
63 | #define PORT_RSA 13 /* RSA-DV II/S card */ |
64 | #define PORT_MAX 13 |
65 | |
66 | #define SERIAL_IO_PORT 0 |
67 | #define SERIAL_IO_HUB6 1 |
68 | #define SERIAL_IO_MEM 2 |
69 | #define SERIAL_IO_MEM32 3 |
70 | #define SERIAL_IO_AU 4 |
71 | #define SERIAL_IO_TSI 5 |
72 | #define SERIAL_IO_MEM32BE 6 |
73 | #define SERIAL_IO_MEM16 7 |
74 | |
75 | #define UART_CLEAR_FIFO 0x01 |
76 | #define UART_USE_FIFO 0x02 |
77 | #define UART_STARTECH 0x04 |
78 | #define UART_NATSEMI 0x08 |
79 | |
80 | |
81 | /* |
82 | * Multiport serial configuration structure --- external structure |
83 | */ |
84 | struct serial_multiport_struct { |
85 | int irq; |
86 | int port1; |
87 | unsigned char mask1, match1; |
88 | int port2; |
89 | unsigned char mask2, match2; |
90 | int port3; |
91 | unsigned char mask3, match3; |
92 | int port4; |
93 | unsigned char mask4, match4; |
94 | int port_monitor; |
95 | int reserved[32]; |
96 | }; |
97 | |
98 | /* |
99 | * Serial input interrupt line counters -- external structure |
100 | * Four lines can interrupt: CTS, DSR, RI, DCD |
101 | */ |
102 | struct serial_icounter_struct { |
103 | int cts, dsr, rng, dcd; |
104 | int rx, tx; |
105 | int frame, overrun, parity, brk; |
106 | int buf_overrun; |
107 | int reserved[9]; |
108 | }; |
109 | |
110 | /** |
111 | * struct serial_rs485 - serial interface for controlling RS485 settings. |
112 | * @flags: RS485 feature flags. |
113 | * @delay_rts_before_send: Delay before send (milliseconds). |
114 | * @delay_rts_after_send: Delay after send (milliseconds). |
115 | * @addr_recv: Receive filter for RS485 addressing mode |
116 | * (used only when %SER_RS485_ADDR_RECV is set). |
117 | * @addr_dest: Destination address for RS485 addressing mode |
118 | * (used only when %SER_RS485_ADDR_DEST is set). |
119 | * @padding0: Padding (set to zero). |
120 | * @padding1: Padding (set to zero). |
121 | * @padding: Deprecated, use @padding0 and @padding1 instead. |
122 | * Do not use with @addr_recv and @addr_dest (due to |
123 | * overlap). |
124 | * |
125 | * Serial interface for controlling RS485 settings on chips with suitable |
126 | * support. Set with TIOCSRS485 and get with TIOCGRS485 if supported by your |
127 | * platform. The set function returns the new state, with any unsupported bits |
128 | * reverted appropriately. |
129 | * |
130 | * The flag bits are: |
131 | * |
132 | * * %SER_RS485_ENABLED - RS485 enabled. |
133 | * * %SER_RS485_RTS_ON_SEND - Logical level for RTS pin when sending. |
134 | * * %SER_RS485_RTS_AFTER_SEND - Logical level for RTS pin after sent. |
135 | * * %SER_RS485_RX_DURING_TX - Full-duplex RS485 line. |
136 | * * %SER_RS485_TERMINATE_BUS - Enable bus termination (if supported). |
137 | * * %SER_RS485_ADDRB - Enable RS485 addressing mode. |
138 | * * %SER_RS485_ADDR_RECV - Receive address filter (enables @addr_recv). Requires %SER_RS485_ADDRB. |
139 | * * %SER_RS485_ADDR_DEST - Destination address (enables @addr_dest). Requires %SER_RS485_ADDRB. |
140 | */ |
141 | struct serial_rs485 { |
142 | __u32 flags; |
143 | #define SER_RS485_ENABLED (1 << 0) |
144 | #define SER_RS485_RTS_ON_SEND (1 << 1) |
145 | #define SER_RS485_RTS_AFTER_SEND (1 << 2) |
146 | #define SER_RS485_RX_DURING_TX (1 << 4) |
147 | #define SER_RS485_TERMINATE_BUS (1 << 5) |
148 | #define SER_RS485_ADDRB (1 << 6) |
149 | #define SER_RS485_ADDR_RECV (1 << 7) |
150 | #define SER_RS485_ADDR_DEST (1 << 8) |
151 | |
152 | __u32 delay_rts_before_send; |
153 | __u32 delay_rts_after_send; |
154 | |
155 | /* The fields below are defined by flags */ |
156 | union { |
157 | __u32 padding[5]; /* Memory is cheap, new structs are a pain */ |
158 | |
159 | struct { |
160 | __u8 addr_recv; |
161 | __u8 addr_dest; |
162 | __u8 padding0[2]; |
163 | __u32 padding1[4]; |
164 | }; |
165 | }; |
166 | }; |
167 | |
168 | /* |
169 | * Serial interface for controlling ISO7816 settings on chips with suitable |
170 | * support. Set with TIOCSISO7816 and get with TIOCGISO7816 if supported by |
171 | * your platform. |
172 | */ |
173 | struct serial_iso7816 { |
174 | __u32 flags; /* ISO7816 feature flags */ |
175 | #define SER_ISO7816_ENABLED (1 << 0) |
176 | #define SER_ISO7816_T_PARAM (0x0f << 4) |
177 | #define SER_ISO7816_T(t) (((t) & 0x0f) << 4) |
178 | __u32 tg; |
179 | __u32 sc_fi; |
180 | __u32 sc_di; |
181 | __u32 clk; |
182 | __u32 reserved[5]; |
183 | }; |
184 | |
185 | #endif /* _UAPI_LINUX_SERIAL_H */ |
186 | |