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607ca46e DH |
1 | /* |
2 | * include/linux/serial.h | |
3 | * | |
4 | * Copyright (C) 1992 by Theodore Ts'o. | |
5 | * | |
6 | * Redistribution of this file is permitted under the terms of the GNU | |
7 | * Public License (GPL) | |
8 | */ | |
9 | ||
10 | #ifndef _UAPI_LINUX_SERIAL_H | |
11 | #define _UAPI_LINUX_SERIAL_H | |
12 | ||
13 | #include <linux/types.h> | |
14 | ||
15 | #include <linux/tty_flags.h> | |
16 | ||
17 | ||
18 | struct serial_struct { | |
19 | int type; | |
20 | int line; | |
21 | unsigned int port; | |
22 | int irq; | |
23 | int flags; | |
24 | int xmit_fifo_size; | |
25 | int custom_divisor; | |
26 | int baud_base; | |
27 | unsigned short close_delay; | |
28 | char io_type; | |
29 | char reserved_char[1]; | |
30 | int hub6; | |
31 | unsigned short closing_wait; /* time to wait before closing */ | |
32 | unsigned short closing_wait2; /* no longer used... */ | |
33 | unsigned char *iomem_base; | |
34 | unsigned short iomem_reg_shift; | |
35 | unsigned int port_high; | |
36 | unsigned long iomap_base; /* cookie passed into ioremap */ | |
37 | }; | |
38 | ||
39 | /* | |
40 | * For the close wait times, 0 means wait forever for serial port to | |
41 | * flush its output. 65535 means don't wait at all. | |
42 | */ | |
43 | #define ASYNC_CLOSING_WAIT_INF 0 | |
44 | #define ASYNC_CLOSING_WAIT_NONE 65535 | |
45 | ||
46 | /* | |
47 | * These are the supported serial types. | |
48 | */ | |
49 | #define PORT_UNKNOWN 0 | |
50 | #define PORT_8250 1 | |
51 | #define PORT_16450 2 | |
52 | #define PORT_16550 3 | |
53 | #define PORT_16550A 4 | |
54 | #define PORT_CIRRUS 5 /* usurped by cyclades.c */ | |
55 | #define PORT_16650 6 | |
56 | #define PORT_16650V2 7 | |
57 | #define PORT_16750 8 | |
58 | #define PORT_STARTECH 9 /* usurped by cyclades.c */ | |
59 | #define PORT_16C950 10 /* Oxford Semiconductor */ | |
60 | #define PORT_16654 11 | |
61 | #define PORT_16850 12 | |
62 | #define PORT_RSA 13 /* RSA-DV II/S card */ | |
63 | #define PORT_MAX 13 | |
64 | ||
65 | #define SERIAL_IO_PORT 0 | |
66 | #define SERIAL_IO_HUB6 1 | |
67 | #define SERIAL_IO_MEM 2 | |
68 | ||
69 | #define UART_CLEAR_FIFO 0x01 | |
70 | #define UART_USE_FIFO 0x02 | |
71 | #define UART_STARTECH 0x04 | |
72 | #define UART_NATSEMI 0x08 | |
73 | ||
74 | ||
75 | /* | |
76 | * Multiport serial configuration structure --- external structure | |
77 | */ | |
78 | struct serial_multiport_struct { | |
79 | int irq; | |
80 | int port1; | |
81 | unsigned char mask1, match1; | |
82 | int port2; | |
83 | unsigned char mask2, match2; | |
84 | int port3; | |
85 | unsigned char mask3, match3; | |
86 | int port4; | |
87 | unsigned char mask4, match4; | |
88 | int port_monitor; | |
89 | int reserved[32]; | |
90 | }; | |
91 | ||
92 | /* | |
93 | * Serial input interrupt line counters -- external structure | |
94 | * Four lines can interrupt: CTS, DSR, RI, DCD | |
95 | */ | |
96 | struct serial_icounter_struct { | |
97 | int cts, dsr, rng, dcd; | |
98 | int rx, tx; | |
99 | int frame, overrun, parity, brk; | |
100 | int buf_overrun; | |
101 | int reserved[9]; | |
102 | }; | |
103 | ||
104 | /* | |
105 | * Serial interface for controlling RS485 settings on chips with suitable | |
106 | * support. Set with TIOCSRS485 and get with TIOCGRS485 if supported by your | |
107 | * platform. The set function returns the new state, with any unsupported bits | |
108 | * reverted appropriately. | |
109 | */ | |
110 | ||
111 | struct serial_rs485 { | |
112 | __u32 flags; /* RS485 feature flags */ | |
113 | #define SER_RS485_ENABLED (1 << 0) /* If enabled */ | |
114 | #define SER_RS485_RTS_ON_SEND (1 << 1) /* Logical level for | |
115 | RTS pin when | |
116 | sending */ | |
117 | #define SER_RS485_RTS_AFTER_SEND (1 << 2) /* Logical level for | |
118 | RTS pin after sent*/ | |
119 | #define SER_RS485_RX_DURING_TX (1 << 4) | |
120 | __u32 delay_rts_before_send; /* Delay before send (milliseconds) */ | |
121 | __u32 delay_rts_after_send; /* Delay after send (milliseconds) */ | |
122 | __u32 padding[5]; /* Memory is cheap, new structs | |
123 | are a royal PITA .. */ | |
124 | }; | |
125 | ||
126 | #endif /* _UAPI_LINUX_SERIAL_H */ |