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10 #ifndef _LINUX_SERIAL_H
11 #define _LINUX_SERIAL_H
12
13 struct serial_struct {
14 int type;
15 int line;
16 int port;
17 int irq;
18 int flags;
19 int xmit_fifo_size;
20 int custom_divisor;
21 int baud_base;
22 unsigned short close_delay;
23 char reserved_char[2];
24 int hub6;
25 unsigned short closing_wait;
26 unsigned short closing_wait2;
27 int reserved[4];
28 };
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34 #define ASYNC_CLOSING_WAIT_INF 0
35 #define ASYNC_CLOSING_WAIT_NONE 65535
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40 #define PORT_UNKNOWN 0
41 #define PORT_8250 1
42 #define PORT_16450 2
43 #define PORT_16550 3
44 #define PORT_16550A 4
45 #define PORT_CIRRUS 5
46 #define PORT_16650 6
47 #define PORT_MAX 6
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52 #define ASYNC_HUP_NOTIFY 0x0001
53
54 #define ASYNC_FOURPORT 0x0002
55 #define ASYNC_SAK 0x0004
56 #define ASYNC_SPLIT_TERMIOS 0x0008
57
58 #define ASYNC_SPD_MASK 0x0030
59 #define ASYNC_SPD_HI 0x0010
60
61 #define ASYNC_SPD_VHI 0x0020
62 #define ASYNC_SPD_CUST 0x0030
63
64 #define ASYNC_SKIP_TEST 0x0040
65 #define ASYNC_AUTO_IRQ 0x0080
66 #define ASYNC_SESSION_LOCKOUT 0x0100
67 #define ASYNC_PGRP_LOCKOUT 0x0200
68 #define ASYNC_CALLOUT_NOHUP 0x0400
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70 #define ASYNC_FLAGS 0x0FFF
71 #define ASYNC_USR_MASK 0x0430
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75 #define ASYNC_INITIALIZED 0x80000000
76 #define ASYNC_CALLOUT_ACTIVE 0x40000000
77 #define ASYNC_NORMAL_ACTIVE 0x20000000
78 #define ASYNC_BOOT_AUTOCONF 0x10000000
79 #define ASYNC_CLOSING 0x08000000
80 #define ASYNC_CTS_FLOW 0x04000000
81 #define ASYNC_CHECK_CD 0x02000000
82
83 #ifdef __KERNEL__
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93 struct async_struct {
94 int magic;
95 int baud_base;
96 int port;
97 int irq;
98 int flags;
99 int hub6;
100 int type;
101 struct tty_struct *tty;
102 int read_status_mask;
103 int ignore_status_mask;
104 int timeout;
105 int xmit_fifo_size;
106 int custom_divisor;
107 int x_char;
108 int close_delay;
109 unsigned short closing_wait;
110 unsigned short closing_wait2;
111 int IER;
112 int MCR;
113 int MCR_noint;
114 int event;
115 unsigned long last_active;
116 int line;
117 int count;
118 int blocked_open;
119 long session;
120 long pgrp;
121 unsigned char *xmit_buf;
122 int xmit_head;
123 int xmit_tail;
124 int xmit_cnt;
125 struct tq_struct tqueue;
126 struct termios normal_termios;
127 struct termios callout_termios;
128 struct wait_queue *open_wait;
129 struct wait_queue *close_wait;
130 struct async_struct *next_port;
131 struct async_struct *prev_port;
132 };
133
134 #define SERIAL_MAGIC 0x5301
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139 #define SERIAL_XMIT_SIZE 4096
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145 #define RS_EVENT_WRITE_WAKEUP 0
146 #define RS_EVENT_HANGUP 1
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149 extern int register_serial(struct serial_struct *req);
150 extern void unregister_serial(int line);
151 #endif
152 #endif