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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 AW |
14 | |
15 | #ifdef __KERNEL__ | |
1da177e4 LT |
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 */ | |
71cad055 | 80 | #define PORT_MAX 13 |
1da177e4 LT |
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 | |
70beaed2 JS |
99 | * |
100 | * Define ASYNCB_* for convenient use with {test,set,clear}_bit. | |
1da177e4 | 101 | */ |
70beaed2 JS |
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 */ | |
ccce6deb | 125 | #define ASYNCB_SUSPENDED 30 /* Serial port is suspended */ |
70beaed2 JS |
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) | |
ccce6deb | 137 | #define ASYNC_SUSPENDED (1U << ASYNCB_SUSPENDED) |
70beaed2 JS |
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 | ||
93e3d582 | 154 | #define ASYNC_FLAGS ((1U << (ASYNCB_LAST_USER + 1)) - 1) |
91cedcde JS |
155 | #define ASYNC_USR_MASK (ASYNC_SPD_MASK|ASYNC_CALLOUT_NOHUP| \ |
156 | ASYNC_LOW_LATENCY) | |
70beaed2 JS |
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)) | |
1da177e4 LT |
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 | ||
c26c56c0 AC |
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 */ | |
93f3350c CS |
210 | #define SER_RS485_ENABLED (1 << 0) /* If enabled */ |
211 | #define SER_RS485_RTS_ON_SEND (1 << 1) /* Logical level for | |
212 | RTS pin when | |
213 | sending */ | |
214 | #define SER_RS485_RTS_AFTER_SEND (1 << 2) /* Logical level for | |
215 | RTS pin after sent*/ | |
83cac9f3 | 216 | #define SER_RS485_RX_DURING_TX (1 << 4) |
93f3350c CS |
217 | __u32 delay_rts_before_send; /* Delay before send (milliseconds) */ |
218 | __u32 delay_rts_after_send; /* Delay after send (milliseconds) */ | |
1b633184 | 219 | __u32 padding[5]; /* Memory is cheap, new structs |
c26c56c0 AC |
220 | are a royal PITA .. */ |
221 | }; | |
1da177e4 LT |
222 | |
223 | #ifdef __KERNEL__ | |
661f83a6 RK |
224 | #include <linux/compiler.h> |
225 | ||
1da177e4 LT |
226 | #endif /* __KERNEL__ */ |
227 | #endif /* _LINUX_SERIAL_H */ |