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e2be04c7 | 1 | /* SPDX-License-Identifier: GPL-1.0+ WITH Linux-syscall-note */ |
607ca46e DH |
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 /* usurped by cyclades.c */ | |
56 | #define PORT_16650 6 | |
57 | #define PORT_16650V2 7 | |
58 | #define PORT_16750 8 | |
59 | #define PORT_STARTECH 9 /* usurped by cyclades.c */ | |
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 | |
647f162b PH |
69 | #define SERIAL_IO_MEM32 3 |
70 | #define SERIAL_IO_AU 4 | |
71 | #define SERIAL_IO_TSI 5 | |
72 | #define SERIAL_IO_MEM32BE 6 | |
bd94c407 | 73 | #define SERIAL_IO_MEM16 7 |
607ca46e DH |
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 | * Serial interface for controlling RS485 settings on chips with suitable | |
112 | * support. Set with TIOCSRS485 and get with TIOCGRS485 if supported by your | |
113 | * platform. The set function returns the new state, with any unsupported bits | |
114 | * reverted appropriately. | |
115 | */ | |
116 | ||
117 | struct serial_rs485 { | |
118 | __u32 flags; /* RS485 feature flags */ | |
119 | #define SER_RS485_ENABLED (1 << 0) /* If enabled */ | |
120 | #define SER_RS485_RTS_ON_SEND (1 << 1) /* Logical level for | |
121 | RTS pin when | |
122 | sending */ | |
123 | #define SER_RS485_RTS_AFTER_SEND (1 << 2) /* Logical level for | |
124 | RTS pin after sent*/ | |
125 | #define SER_RS485_RX_DURING_TX (1 << 4) | |
e8759ad1 JK |
126 | #define SER_RS485_TERMINATE_BUS (1 << 5) /* Enable bus |
127 | termination | |
128 | (if supported) */ | |
607ca46e DH |
129 | __u32 delay_rts_before_send; /* Delay before send (milliseconds) */ |
130 | __u32 delay_rts_after_send; /* Delay after send (milliseconds) */ | |
131 | __u32 padding[5]; /* Memory is cheap, new structs | |
132 | are a royal PITA .. */ | |
133 | }; | |
134 | ||
135 | #endif /* _UAPI_LINUX_SERIAL_H */ |