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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 | |
13 | #include <linux/types.h> |
14 | |
15 | #ifdef __KERNEL__ |
16 | #include <asm/page.h> |
17 | |
18 | /* |
19 | * Counters of the input lines (CTS, DSR, RI, CD) interrupts |
20 | */ |
21 | |
22 | struct async_icount { |
23 | __u32 cts, dsr, rng, dcd, tx, rx; |
24 | __u32 frame, parity, overrun, brk; |
25 | __u32 buf_overrun; |
26 | }; |
27 | |
28 | /* |
29 | * The size of the serial xmit buffer is 1 page, or 4096 bytes |
30 | */ |
31 | #define SERIAL_XMIT_SIZE PAGE_SIZE |
32 | |
33 | #endif |
34 | |
35 | struct serial_struct { |
36 | int type; |
37 | int line; |
38 | unsigned int port; |
39 | int irq; |
40 | int flags; |
41 | int xmit_fifo_size; |
42 | int custom_divisor; |
43 | int baud_base; |
44 | unsigned short close_delay; |
45 | char io_type; |
46 | char reserved_char[1]; |
47 | int hub6; |
48 | unsigned short closing_wait; /* time to wait before closing */ |
49 | unsigned short closing_wait2; /* no longer used... */ |
50 | unsigned char *iomem_base; |
51 | unsigned short iomem_reg_shift; |
52 | unsigned int port_high; |
53 | unsigned long iomap_base; /* cookie passed into ioremap */ |
54 | }; |
55 | |
56 | /* |
57 | * For the close wait times, 0 means wait forever for serial port to |
58 | * flush its output. 65535 means don't wait at all. |
59 | */ |
60 | #define ASYNC_CLOSING_WAIT_INF 0 |
61 | #define ASYNC_CLOSING_WAIT_NONE 65535 |
62 | |
63 | /* |
64 | * These are the supported serial types. |
65 | */ |
66 | #define PORT_UNKNOWN 0 |
67 | #define PORT_8250 1 |
68 | #define PORT_16450 2 |
69 | #define PORT_16550 3 |
70 | #define PORT_16550A 4 |
71 | #define PORT_CIRRUS 5 /* usurped by cyclades.c */ |
72 | #define PORT_16650 6 |
73 | #define PORT_16650V2 7 |
74 | #define PORT_16750 8 |
75 | #define PORT_STARTECH 9 /* usurped by cyclades.c */ |
76 | #define PORT_16C950 10 /* Oxford Semiconductor */ |
77 | #define PORT_16654 11 |
78 | #define PORT_16850 12 |
79 | #define PORT_RSA 13 /* RSA-DV II/S card */ |
80 | #define PORT_MAX 13 |
81 | |
82 | #define SERIAL_IO_PORT 0 |
83 | #define SERIAL_IO_HUB6 1 |
84 | #define SERIAL_IO_MEM 2 |
85 | |
86 | struct serial_uart_config { |
87 | char *name; |
88 | int dfl_xmit_fifo_size; |
89 | int flags; |
90 | }; |
91 | |
92 | #define UART_CLEAR_FIFO 0x01 |
93 | #define UART_USE_FIFO 0x02 |
94 | #define UART_STARTECH 0x04 |
95 | #define UART_NATSEMI 0x08 |
96 | |
97 | /* |
98 | * Definitions for async_struct (and serial_struct) flags field |
99 | * |
100 | * Define ASYNCB_* for convenient use with {test,set,clear}_bit. |
101 | */ |
102 | #define ASYNCB_HUP_NOTIFY 0 /* Notify getty on hangups and closes |
103 | * on the callout port */ |
104 | #define ASYNCB_FOURPORT 1 /* Set OU1, OUT2 per AST Fourport settings */ |
105 | #define ASYNCB_SAK 2 /* Secure Attention Key (Orange book) */ |
106 | #define ASYNCB_SPLIT_TERMIOS 3 /* Separate termios for dialin/callout */ |
107 | #define ASYNCB_SPD_HI 4 /* Use 56000 instead of 38400 bps */ |
108 | #define ASYNCB_SPD_VHI 5 /* Use 115200 instead of 38400 bps */ |
109 | #define ASYNCB_SKIP_TEST 6 /* Skip UART test during autoconfiguration */ |
110 | #define ASYNCB_AUTO_IRQ 7 /* Do automatic IRQ during |
111 | * autoconfiguration */ |
112 | #define ASYNCB_SESSION_LOCKOUT 8 /* Lock out cua opens based on session */ |
113 | #define ASYNCB_PGRP_LOCKOUT 9 /* Lock out cua opens based on pgrp */ |
114 | #define ASYNCB_CALLOUT_NOHUP 10 /* Don't do hangups for cua device */ |
115 | #define ASYNCB_HARDPPS_CD 11 /* Call hardpps when CD goes high */ |
116 | #define ASYNCB_SPD_SHI 12 /* Use 230400 instead of 38400 bps */ |
117 | #define ASYNCB_LOW_LATENCY 13 /* Request low latency behaviour */ |
118 | #define ASYNCB_BUGGY_UART 14 /* This is a buggy UART, skip some safety |
119 | * checks. Note: can be dangerous! */ |
120 | #define ASYNCB_AUTOPROBE 15 /* Port was autoprobed by PCI or PNP code */ |
121 | #define ASYNCB_LAST_USER 15 |
122 | |
123 | /* Internal flags used only by kernel */ |
124 | #define ASYNCB_INITIALIZED 31 /* Serial port was initialized */ |
125 | #define ASYNCB_SUSPENDED 30 /* Serial port is suspended */ |
126 | #define ASYNCB_NORMAL_ACTIVE 29 /* Normal device is active */ |
127 | #define ASYNCB_BOOT_AUTOCONF 28 /* Autoconfigure port on bootup */ |
128 | #define ASYNCB_CLOSING 27 /* Serial port is closing */ |
129 | #define ASYNCB_CTS_FLOW 26 /* Do CTS flow control */ |
130 | #define ASYNCB_CHECK_CD 25 /* i.e., CLOCAL */ |
131 | #define ASYNCB_SHARE_IRQ 24 /* for multifunction cards, no longer used */ |
132 | #define ASYNCB_CONS_FLOW 23 /* flow control for console */ |
133 | #define ASYNCB_BOOT_ONLYMCA 22 /* Probe only if MCA bus */ |
134 | #define ASYNCB_FIRST_KERNEL 22 |
135 | |
136 | #define ASYNC_HUP_NOTIFY (1U << ASYNCB_HUP_NOTIFY) |
137 | #define ASYNC_SUSPENDED (1U << ASYNCB_SUSPENDED) |
138 | #define ASYNC_FOURPORT (1U << ASYNCB_FOURPORT) |
139 | #define ASYNC_SAK (1U << ASYNCB_SAK) |
140 | #define ASYNC_SPLIT_TERMIOS (1U << ASYNCB_SPLIT_TERMIOS) |
141 | #define ASYNC_SPD_HI (1U << ASYNCB_SPD_HI) |
142 | #define ASYNC_SPD_VHI (1U << ASYNCB_SPD_VHI) |
143 | #define ASYNC_SKIP_TEST (1U << ASYNCB_SKIP_TEST) |
144 | #define ASYNC_AUTO_IRQ (1U << ASYNCB_AUTO_IRQ) |
145 | #define ASYNC_SESSION_LOCKOUT (1U << ASYNCB_SESSION_LOCKOUT) |
146 | #define ASYNC_PGRP_LOCKOUT (1U << ASYNCB_PGRP_LOCKOUT) |
147 | #define ASYNC_CALLOUT_NOHUP (1U << ASYNCB_CALLOUT_NOHUP) |
148 | #define ASYNC_HARDPPS_CD (1U << ASYNCB_HARDPPS_CD) |
149 | #define ASYNC_SPD_SHI (1U << ASYNCB_SPD_SHI) |
150 | #define ASYNC_LOW_LATENCY (1U << ASYNCB_LOW_LATENCY) |
151 | #define ASYNC_BUGGY_UART (1U << ASYNCB_BUGGY_UART) |
152 | #define ASYNC_AUTOPROBE (1U << ASYNCB_AUTOPROBE) |
153 | |
154 | #define ASYNC_FLAGS ((1U << (ASYNCB_LAST_USER + 1)) - 1) |
155 | #define ASYNC_USR_MASK (ASYNC_SPD_HI|ASYNC_SPD_VHI| \ |
156 | ASYNC_CALLOUT_NOHUP|ASYNC_SPD_SHI|ASYNC_LOW_LATENCY) |
157 | #define ASYNC_SPD_CUST (ASYNC_SPD_HI|ASYNC_SPD_VHI) |
158 | #define ASYNC_SPD_WARP (ASYNC_SPD_HI|ASYNC_SPD_SHI) |
159 | #define ASYNC_SPD_MASK (ASYNC_SPD_HI|ASYNC_SPD_VHI|ASYNC_SPD_SHI) |
160 | |
161 | #define ASYNC_INITIALIZED (1U << ASYNCB_INITIALIZED) |
162 | #define ASYNC_NORMAL_ACTIVE (1U << ASYNCB_NORMAL_ACTIVE) |
163 | #define ASYNC_BOOT_AUTOCONF (1U << ASYNCB_BOOT_AUTOCONF) |
164 | #define ASYNC_CLOSING (1U << ASYNCB_CLOSING) |
165 | #define ASYNC_CTS_FLOW (1U << ASYNCB_CTS_FLOW) |
166 | #define ASYNC_CHECK_CD (1U << ASYNCB_CHECK_CD) |
167 | #define ASYNC_SHARE_IRQ (1U << ASYNCB_SHARE_IRQ) |
168 | #define ASYNC_CONS_FLOW (1U << ASYNCB_CONS_FLOW) |
169 | #define ASYNC_BOOT_ONLYMCA (1U << ASYNCB_BOOT_ONLYMCA) |
170 | #define ASYNC_INTERNAL_FLAGS (~((1U << ASYNCB_FIRST_KERNEL) - 1)) |
171 | |
172 | /* |
173 | * Multiport serial configuration structure --- external structure |
174 | */ |
175 | struct serial_multiport_struct { |
176 | int irq; |
177 | int port1; |
178 | unsigned char mask1, match1; |
179 | int port2; |
180 | unsigned char mask2, match2; |
181 | int port3; |
182 | unsigned char mask3, match3; |
183 | int port4; |
184 | unsigned char mask4, match4; |
185 | int port_monitor; |
186 | int reserved[32]; |
187 | }; |
188 | |
189 | /* |
190 | * Serial input interrupt line counters -- external structure |
191 | * Four lines can interrupt: CTS, DSR, RI, DCD |
192 | */ |
193 | struct serial_icounter_struct { |
194 | int cts, dsr, rng, dcd; |
195 | int rx, tx; |
196 | int frame, overrun, parity, brk; |
197 | int buf_overrun; |
198 | int reserved[9]; |
199 | }; |
200 | |
201 | /* |
202 | * Serial interface for controlling RS485 settings on chips with suitable |
203 | * support. Set with TIOCSRS485 and get with TIOCGRS485 if supported by your |
204 | * platform. The set function returns the new state, with any unsupported bits |
205 | * reverted appropriately. |
206 | */ |
207 | |
208 | struct serial_rs485 { |
209 | __u32 flags; /* RS485 feature flags */ |
210 | #define SER_RS485_ENABLED (1 << 0) |
211 | #define SER_RS485_RTS_ON_SEND (1 << 1) |
212 | #define SER_RS485_RTS_AFTER_SEND (1 << 2) |
213 | #define SER_RS485_RTS_BEFORE_SEND (1 << 3) |
214 | __u32 delay_rts_before_send; /* Milliseconds */ |
215 | __u32 delay_rts_after_send; /* Milliseconds */ |
216 | __u32 padding[5]; /* Memory is cheap, new structs |
217 | are a royal PITA .. */ |
218 | }; |
219 | |
220 | #ifdef __KERNEL__ |
221 | #include <linux/compiler.h> |
222 | |
223 | #endif /* __KERNEL__ */ |
224 | #endif /* _LINUX_SERIAL_H */ |
225 |
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