File: /usr/src/linux/include/linux/cd1400.h
1 /*****************************************************************************/
2
3 /*
4 * cd1400.h -- cd1400 UART hardware info.
5 *
6 * Copyright (C) 1996-1998 Stallion Technologies (support@stallion.oz.au).
7 * Copyright (C) 1994-1996 Greg Ungerer.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 */
23
24 /*****************************************************************************/
25 #ifndef _CD1400_H
26 #define _CD1400_H
27 /*****************************************************************************/
28
29 /*
30 * Define the number of async ports per cd1400 uart chip.
31 */
32 #define CD1400_PORTS 4
33
34 /*
35 * Define the cd1400 uarts internal FIFO sizes.
36 */
37 #define CD1400_TXFIFOSIZE 12
38 #define CD1400_RXFIFOSIZE 12
39
40 /*
41 * Local RX FIFO thresh hold level. Also define the RTS thresh hold
42 * based on the RX thresh hold.
43 */
44 #define FIFO_RXTHRESHOLD 6
45 #define FIFO_RTSTHRESHOLD 7
46
47 /*****************************************************************************/
48
49 /*
50 * Define the cd1400 register addresses. These are all the valid
51 * registers with the cd1400. Some are global, some virtual, some
52 * per port.
53 */
54 #define GFRCR 0x40
55 #define CAR 0x68
56 #define GCR 0x4b
57 #define SVRR 0x67
58 #define RICR 0x44
59 #define TICR 0x45
60 #define MICR 0x46
61 #define RIR 0x6b
62 #define TIR 0x6a
63 #define MIR 0x69
64 #define PPR 0x7e
65
66 #define RIVR 0x43
67 #define TIVR 0x42
68 #define MIVR 0x41
69 #define TDR 0x63
70 #define RDSR 0x62
71 #define MISR 0x4c
72 #define EOSRR 0x60
73
74 #define LIVR 0x18
75 #define CCR 0x05
76 #define SRER 0x06
77 #define COR1 0x08
78 #define COR2 0x09
79 #define COR3 0x0a
80 #define COR4 0x1e
81 #define COR5 0x1f
82 #define CCSR 0x0b
83 #define RDCR 0x0e
84 #define SCHR1 0x1a
85 #define SCHR2 0x1b
86 #define SCHR3 0x1c
87 #define SCHR4 0x1d
88 #define SCRL 0x22
89 #define SCRH 0x23
90 #define LNC 0x24
91 #define MCOR1 0x15
92 #define MCOR2 0x16
93 #define RTPR 0x21
94 #define MSVR1 0x6c
95 #define MSVR2 0x6d
96 #define PSVR 0x6f
97 #define RBPR 0x78
98 #define RCOR 0x7c
99 #define TBPR 0x72
100 #define TCOR 0x76
101
102 /*****************************************************************************/
103
104 /*
105 * Define the set of baud rate clock divisors.
106 */
107 #define CD1400_CLK0 8
108 #define CD1400_CLK1 32
109 #define CD1400_CLK2 128
110 #define CD1400_CLK3 512
111 #define CD1400_CLK4 2048
112
113 #define CD1400_NUMCLKS 5
114
115 /*****************************************************************************/
116
117 /*
118 * Define the clock pre-scalar value to be a 5 ms clock. This should be
119 * OK for now. It would probably be better to make it 10 ms, but we
120 * can't fit that divisor into 8 bits!
121 */
122 #define PPR_SCALAR 244
123
124 /*****************************************************************************/
125
126 /*
127 * Define values used to set character size options.
128 */
129 #define COR1_CHL5 0x00
130 #define COR1_CHL6 0x01
131 #define COR1_CHL7 0x02
132 #define COR1_CHL8 0x03
133
134 /*
135 * Define values used to set the number of stop bits.
136 */
137 #define COR1_STOP1 0x00
138 #define COR1_STOP15 0x04
139 #define COR1_STOP2 0x08
140
141 /*
142 * Define values used to set the parity scheme in use.
143 */
144 #define COR1_PARNONE 0x00
145 #define COR1_PARFORCE 0x20
146 #define COR1_PARENB 0x40
147 #define COR1_PARIGNORE 0x10
148
149 #define COR1_PARODD 0x80
150 #define COR1_PAREVEN 0x00
151
152 #define COR2_IXM 0x80
153 #define COR2_TXIBE 0x40
154 #define COR2_ETC 0x20
155 #define COR2_LLM 0x10
156 #define COR2_RLM 0x08
157 #define COR2_RTSAO 0x04
158 #define COR2_CTSAE 0x02
159
160 #define COR3_SCDRNG 0x80
161 #define COR3_SCD34 0x40
162 #define COR3_FCT 0x20
163 #define COR3_SCD12 0x10
164
165 /*
166 * Define values used by COR4.
167 */
168 #define COR4_BRKINT 0x08
169 #define COR4_IGNBRK 0x18
170
171 /*****************************************************************************/
172
173 /*
174 * Define the modem control register values.
175 * Note that the actual hardware is a little different to the conventional
176 * pin names on the cd1400.
177 */
178 #define MSVR1_DTR 0x01
179 #define MSVR1_DSR 0x10
180 #define MSVR1_RI 0x20
181 #define MSVR1_CTS 0x40
182 #define MSVR1_DCD 0x80
183
184 #define MSVR2_RTS 0x02
185 #define MSVR2_DSR 0x10
186 #define MSVR2_RI 0x20
187 #define MSVR2_CTS 0x40
188 #define MSVR2_DCD 0x80
189
190 #define MCOR1_DCD 0x80
191 #define MCOR1_CTS 0x40
192 #define MCOR1_RI 0x20
193 #define MCOR1_DSR 0x10
194
195 #define MCOR2_DCD 0x80
196 #define MCOR2_CTS 0x40
197 #define MCOR2_RI 0x20
198 #define MCOR2_DSR 0x10
199
200 /*****************************************************************************/
201
202 /*
203 * Define the bits used with the service (interrupt) enable register.
204 */
205 #define SRER_NNDT 0x01
206 #define SRER_TXEMPTY 0x02
207 #define SRER_TXDATA 0x04
208 #define SRER_RXDATA 0x10
209 #define SRER_MODEM 0x80
210
211 /*****************************************************************************/
212
213 /*
214 * Define operational commands for the command register.
215 */
216 #define CCR_RESET 0x80
217 #define CCR_CORCHANGE 0x4e
218 #define CCR_SENDCH 0x20
219 #define CCR_CHANCTRL 0x10
220
221 #define CCR_TXENABLE (CCR_CHANCTRL | 0x08)
222 #define CCR_TXDISABLE (CCR_CHANCTRL | 0x04)
223 #define CCR_RXENABLE (CCR_CHANCTRL | 0x02)
224 #define CCR_RXDISABLE (CCR_CHANCTRL | 0x01)
225
226 #define CCR_SENDSCHR1 (CCR_SENDCH | 0x01)
227 #define CCR_SENDSCHR2 (CCR_SENDCH | 0x02)
228 #define CCR_SENDSCHR3 (CCR_SENDCH | 0x03)
229 #define CCR_SENDSCHR4 (CCR_SENDCH | 0x04)
230
231 #define CCR_RESETCHAN (CCR_RESET | 0x00)
232 #define CCR_RESETFULL (CCR_RESET | 0x01)
233 #define CCR_TXFLUSHFIFO (CCR_RESET | 0x02)
234
235 #define CCR_MAXWAIT 10000
236
237 /*****************************************************************************/
238
239 /*
240 * Define the valid acknowledgement types (for hw ack cycle).
241 */
242 #define ACK_TYPMASK 0x07
243 #define ACK_TYPTX 0x02
244 #define ACK_TYPMDM 0x01
245 #define ACK_TYPRXGOOD 0x03
246 #define ACK_TYPRXBAD 0x07
247
248 #define SVRR_RX 0x01
249 #define SVRR_TX 0x02
250 #define SVRR_MDM 0x04
251
252 #define ST_OVERRUN 0x01
253 #define ST_FRAMING 0x02
254 #define ST_PARITY 0x04
255 #define ST_BREAK 0x08
256 #define ST_SCHAR1 0x10
257 #define ST_SCHAR2 0x20
258 #define ST_SCHAR3 0x30
259 #define ST_SCHAR4 0x40
260 #define ST_RANGE 0x70
261 #define ST_SCHARMASK 0x70
262 #define ST_TIMEOUT 0x80
263
264 #define MISR_DCD 0x80
265 #define MISR_CTS 0x40
266 #define MISR_RI 0x20
267 #define MISR_DSR 0x10
268
269 /*****************************************************************************/
270
271 /*
272 * Defines for the CCSR status register.
273 */
274 #define CCSR_RXENABLED 0x80
275 #define CCSR_RXFLOWON 0x40
276 #define CCSR_RXFLOWOFF 0x20
277 #define CCSR_TXENABLED 0x08
278 #define CCSR_TXFLOWON 0x04
279 #define CCSR_TXFLOWOFF 0x02
280
281 /*****************************************************************************/
282
283 /*
284 * Define the embedded commands.
285 */
286 #define ETC_CMD 0x00
287 #define ETC_STARTBREAK 0x81
288 #define ETC_DELAY 0x82
289 #define ETC_STOPBREAK 0x83
290
291 /*****************************************************************************/
292 #endif
293