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1da177e4 LT |
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 _LINUX_SERIAL_H | |
11 | #define _LINUX_SERIAL_H | |
12 | ||
4e57b681 | 13 | #include <linux/types.h> |
60c20fb8 | 14 | |
ba3fe7ab AC |
15 | #include <linux/tty_flags.h> |
16 | ||
60c20fb8 | 17 | #ifdef __KERNEL__ |
1da177e4 LT |
18 | #include <asm/page.h> |
19 | ||
ba3fe7ab | 20 | |
1da177e4 LT |
21 | /* |
22 | * Counters of the input lines (CTS, DSR, RI, CD) interrupts | |
23 | */ | |
24 | ||
25 | struct async_icount { | |
26 | __u32 cts, dsr, rng, dcd, tx, rx; | |
27 | __u32 frame, parity, overrun, brk; | |
28 | __u32 buf_overrun; | |
29 | }; | |
30 | ||
31 | /* | |
32 | * The size of the serial xmit buffer is 1 page, or 4096 bytes | |
33 | */ | |
34 | #define SERIAL_XMIT_SIZE PAGE_SIZE | |
35 | ||
36 | #endif | |
37 | ||
38 | struct serial_struct { | |
39 | int type; | |
40 | int line; | |
41 | unsigned int port; | |
42 | int irq; | |
43 | int flags; | |
44 | int xmit_fifo_size; | |
45 | int custom_divisor; | |
46 | int baud_base; | |
47 | unsigned short close_delay; | |
48 | char io_type; | |
49 | char reserved_char[1]; | |
50 | int hub6; | |
51 | unsigned short closing_wait; /* time to wait before closing */ | |
52 | unsigned short closing_wait2; /* no longer used... */ | |
53 | unsigned char *iomem_base; | |
54 | unsigned short iomem_reg_shift; | |
55 | unsigned int port_high; | |
56 | unsigned long iomap_base; /* cookie passed into ioremap */ | |
57 | }; | |
58 | ||
59 | /* | |
60 | * For the close wait times, 0 means wait forever for serial port to | |
61 | * flush its output. 65535 means don't wait at all. | |
62 | */ | |
63 | #define ASYNC_CLOSING_WAIT_INF 0 | |
64 | #define ASYNC_CLOSING_WAIT_NONE 65535 | |
65 | ||
66 | /* | |
67 | * These are the supported serial types. | |
68 | */ | |
69 | #define PORT_UNKNOWN 0 | |
70 | #define PORT_8250 1 | |
71 | #define PORT_16450 2 | |
72 | #define PORT_16550 3 | |
73 | #define PORT_16550A 4 | |
74 | #define PORT_CIRRUS 5 /* usurped by cyclades.c */ | |
75 | #define PORT_16650 6 | |
76 | #define PORT_16650V2 7 | |
77 | #define PORT_16750 8 | |
78 | #define PORT_STARTECH 9 /* usurped by cyclades.c */ | |
79 | #define PORT_16C950 10 /* Oxford Semiconductor */ | |
80 | #define PORT_16654 11 | |
81 | #define PORT_16850 12 | |
82 | #define PORT_RSA 13 /* RSA-DV II/S card */ | |
71cad055 | 83 | #define PORT_MAX 13 |
1da177e4 LT |
84 | |
85 | #define SERIAL_IO_PORT 0 | |
86 | #define SERIAL_IO_HUB6 1 | |
87 | #define SERIAL_IO_MEM 2 | |
88 | ||
1da177e4 LT |
89 | #define UART_CLEAR_FIFO 0x01 |
90 | #define UART_USE_FIFO 0x02 | |
91 | #define UART_STARTECH 0x04 | |
92 | #define UART_NATSEMI 0x08 | |
93 | ||
1da177e4 LT |
94 | |
95 | /* | |
96 | * Multiport serial configuration structure --- external structure | |
97 | */ | |
98 | struct serial_multiport_struct { | |
99 | int irq; | |
100 | int port1; | |
101 | unsigned char mask1, match1; | |
102 | int port2; | |
103 | unsigned char mask2, match2; | |
104 | int port3; | |
105 | unsigned char mask3, match3; | |
106 | int port4; | |
107 | unsigned char mask4, match4; | |
108 | int port_monitor; | |
109 | int reserved[32]; | |
110 | }; | |
111 | ||
112 | /* | |
113 | * Serial input interrupt line counters -- external structure | |
114 | * Four lines can interrupt: CTS, DSR, RI, DCD | |
115 | */ | |
116 | struct serial_icounter_struct { | |
117 | int cts, dsr, rng, dcd; | |
118 | int rx, tx; | |
119 | int frame, overrun, parity, brk; | |
120 | int buf_overrun; | |
121 | int reserved[9]; | |
122 | }; | |
123 | ||
c26c56c0 AC |
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 | ||
131 | struct serial_rs485 { | |
132 | __u32 flags; /* RS485 feature flags */ | |
93f3350c CS |
133 | #define SER_RS485_ENABLED (1 << 0) /* If enabled */ |
134 | #define SER_RS485_RTS_ON_SEND (1 << 1) /* Logical level for | |
135 | RTS pin when | |
136 | sending */ | |
137 | #define SER_RS485_RTS_AFTER_SEND (1 << 2) /* Logical level for | |
138 | RTS pin after sent*/ | |
83cac9f3 | 139 | #define SER_RS485_RX_DURING_TX (1 << 4) |
93f3350c CS |
140 | __u32 delay_rts_before_send; /* Delay before send (milliseconds) */ |
141 | __u32 delay_rts_after_send; /* Delay after send (milliseconds) */ | |
1b633184 | 142 | __u32 padding[5]; /* Memory is cheap, new structs |
c26c56c0 AC |
143 | are a royal PITA .. */ |
144 | }; | |
1da177e4 LT |
145 | |
146 | #ifdef __KERNEL__ | |
661f83a6 RK |
147 | #include <linux/compiler.h> |
148 | ||
1da177e4 LT |
149 | #endif /* __KERNEL__ */ |
150 | #endif /* _LINUX_SERIAL_H */ |