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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/drivers/char/cd1865.h -- Definitions relating to the CD1865
3 * for the Specialix IO8+ multiport serial driver.
4 *
5 * Copyright (C) 1997 Roger Wolff (R.E.Wolff@BitWizard.nl)
6 * Copyright (C) 1994-1996 Dmitry Gorodchanin (pgmdsg@ibi.com)
7 *
8 * Specialix pays for the development and support of this driver.
9 * Please DO contact io8-linux@specialix.co.uk if you require
10 * support.
11 *
12 * This driver was developped in the BitWizard linux device
13 * driver service. If you require a linux device driver for your
14 * product, please contact devices@BitWizard.nl for a quote.
15 *
16 */
17
18/*
19 * Definitions for Driving CD180/CD1864/CD1865 based eightport serial cards.
20 */
21
22
23/* Values of choice for Interrupt ACKs */
24/* These values are "obligatory" if you use the register based
25 * interrupt acknowledgements. See page 99-101 of V2.0 of the CD1865
26 * databook */
27#define SX_ACK_MINT 0x75 /* goes to PILR1 */
28#define SX_ACK_TINT 0x76 /* goes to PILR2 */
29#define SX_ACK_RINT 0x77 /* goes to PILR3 */
30
31/* Chip ID (is used when chips ar daisy chained.) */
32#define SX_ID 0x10
33
34/* Definitions for Cirrus Logic CL-CD186x 8-port async mux chip */
35
36#define CD186x_NCH 8 /* Total number of channels */
37#define CD186x_TPC 16 /* Ticks per character */
38#define CD186x_NFIFO 8 /* TX FIFO size */
39
40
41/* Global registers */
42
43#define CD186x_GIVR 0x40 /* Global Interrupt Vector Register */
44#define CD186x_GICR 0x41 /* Global Interrupting Channel Register */
45#define CD186x_PILR1 0x61 /* Priority Interrupt Level Register 1 */
46#define CD186x_PILR2 0x62 /* Priority Interrupt Level Register 2 */
47#define CD186x_PILR3 0x63 /* Priority Interrupt Level Register 3 */
48#define CD186x_CAR 0x64 /* Channel Access Register */
49#define CD186x_SRSR 0x65 /* Channel Access Register */
50#define CD186x_GFRCR 0x6b /* Global Firmware Revision Code Register */
51#define CD186x_PPRH 0x70 /* Prescaler Period Register High */
52#define CD186x_PPRL 0x71 /* Prescaler Period Register Low */
53#define CD186x_RDR 0x78 /* Receiver Data Register */
54#define CD186x_RCSR 0x7a /* Receiver Character Status Register */
55#define CD186x_TDR 0x7b /* Transmit Data Register */
56#define CD186x_EOIR 0x7f /* End of Interrupt Register */
57#define CD186x_MRAR 0x75 /* Modem Request Acknowledge register */
58#define CD186x_TRAR 0x76 /* Transmit Request Acknowledge register */
59#define CD186x_RRAR 0x77 /* Receive Request Acknowledge register */
60#define CD186x_SRCR 0x66 /* Service Request Configuration register */
61
62/* Channel Registers */
63
64#define CD186x_CCR 0x01 /* Channel Command Register */
65#define CD186x_IER 0x02 /* Interrupt Enable Register */
66#define CD186x_COR1 0x03 /* Channel Option Register 1 */
67#define CD186x_COR2 0x04 /* Channel Option Register 2 */
68#define CD186x_COR3 0x05 /* Channel Option Register 3 */
69#define CD186x_CCSR 0x06 /* Channel Control Status Register */
70#define CD186x_RDCR 0x07 /* Receive Data Count Register */
71#define CD186x_SCHR1 0x09 /* Special Character Register 1 */
72#define CD186x_SCHR2 0x0a /* Special Character Register 2 */
73#define CD186x_SCHR3 0x0b /* Special Character Register 3 */
74#define CD186x_SCHR4 0x0c /* Special Character Register 4 */
75#define CD186x_MCOR1 0x10 /* Modem Change Option 1 Register */
76#define CD186x_MCOR2 0x11 /* Modem Change Option 2 Register */
77#define CD186x_MCR 0x12 /* Modem Change Register */
78#define CD186x_RTPR 0x18 /* Receive Timeout Period Register */
79#define CD186x_MSVR 0x28 /* Modem Signal Value Register */
80#define CD186x_MSVRTS 0x29 /* Modem Signal Value Register */
81#define CD186x_MSVDTR 0x2a /* Modem Signal Value Register */
82#define CD186x_RBPRH 0x31 /* Receive Baud Rate Period Register High */
83#define CD186x_RBPRL 0x32 /* Receive Baud Rate Period Register Low */
84#define CD186x_TBPRH 0x39 /* Transmit Baud Rate Period Register High */
85#define CD186x_TBPRL 0x3a /* Transmit Baud Rate Period Register Low */
86
87
88/* Global Interrupt Vector Register (R/W) */
89
90#define GIVR_ITMASK 0x07 /* Interrupt type mask */
91#define GIVR_IT_MODEM 0x01 /* Modem Signal Change Interrupt */
92#define GIVR_IT_TX 0x02 /* Transmit Data Interrupt */
93#define GIVR_IT_RCV 0x03 /* Receive Good Data Interrupt */
94#define GIVR_IT_REXC 0x07 /* Receive Exception Interrupt */
95
96
97/* Global Interrupt Channel Register (R/W) */
98
99#define GICR_CHAN 0x1c /* Channel Number Mask */
100#define GICR_CHAN_OFF 2 /* Channel Number shift */
101
102
103/* Channel Address Register (R/W) */
104
105#define CAR_CHAN 0x07 /* Channel Number Mask */
106#define CAR_A7 0x08 /* A7 Address Extension (unused) */
107
108
109/* Receive Character Status Register (R/O) */
110
111#define RCSR_TOUT 0x80 /* Rx Timeout */
112#define RCSR_SCDET 0x70 /* Special Character Detected Mask */
113#define RCSR_NO_SC 0x00 /* No Special Characters Detected */
114#define RCSR_SC_1 0x10 /* Special Char 1 (or 1 & 3) Detected */
115#define RCSR_SC_2 0x20 /* Special Char 2 (or 2 & 4) Detected */
116#define RCSR_SC_3 0x30 /* Special Char 3 Detected */
117#define RCSR_SC_4 0x40 /* Special Char 4 Detected */
118#define RCSR_BREAK 0x08 /* Break has been detected */
119#define RCSR_PE 0x04 /* Parity Error */
120#define RCSR_FE 0x02 /* Frame Error */
121#define RCSR_OE 0x01 /* Overrun Error */
122
123
124/* Channel Command Register (R/W) (commands in groups can be OR-ed) */
125
126#define CCR_HARDRESET 0x81 /* Reset the chip */
127
128#define CCR_SOFTRESET 0x80 /* Soft Channel Reset */
129
130#define CCR_CORCHG1 0x42 /* Channel Option Register 1 Changed */
131#define CCR_CORCHG2 0x44 /* Channel Option Register 2 Changed */
132#define CCR_CORCHG3 0x48 /* Channel Option Register 3 Changed */
133
134#define CCR_SSCH1 0x21 /* Send Special Character 1 */
135
136#define CCR_SSCH2 0x22 /* Send Special Character 2 */
137
138#define CCR_SSCH3 0x23 /* Send Special Character 3 */
139
140#define CCR_SSCH4 0x24 /* Send Special Character 4 */
141
142#define CCR_TXEN 0x18 /* Enable Transmitter */
143#define CCR_RXEN 0x12 /* Enable Receiver */
144
145#define CCR_TXDIS 0x14 /* Disable Transmitter */
146#define CCR_RXDIS 0x11 /* Disable Receiver */
147
148
149/* Interrupt Enable Register (R/W) */
150
151#define IER_DSR 0x80 /* Enable interrupt on DSR change */
152#define IER_CD 0x40 /* Enable interrupt on CD change */
153#define IER_CTS 0x20 /* Enable interrupt on CTS change */
154#define IER_RXD 0x10 /* Enable interrupt on Receive Data */
155#define IER_RXSC 0x08 /* Enable interrupt on Receive Spec. Char */
156#define IER_TXRDY 0x04 /* Enable interrupt on TX FIFO empty */
157#define IER_TXEMPTY 0x02 /* Enable interrupt on TX completely empty */
158#define IER_RET 0x01 /* Enable interrupt on RX Exc. Timeout */
159
160
161/* Channel Option Register 1 (R/W) */
162
163#define COR1_ODDP 0x80 /* Odd Parity */
164#define COR1_PARMODE 0x60 /* Parity Mode mask */
165#define COR1_NOPAR 0x00 /* No Parity */
166#define COR1_FORCEPAR 0x20 /* Force Parity */
167#define COR1_NORMPAR 0x40 /* Normal Parity */
168#define COR1_IGNORE 0x10 /* Ignore Parity on RX */
169#define COR1_STOPBITS 0x0c /* Number of Stop Bits */
170#define COR1_1SB 0x00 /* 1 Stop Bit */
171#define COR1_15SB 0x04 /* 1.5 Stop Bits */
172#define COR1_2SB 0x08 /* 2 Stop Bits */
173#define COR1_CHARLEN 0x03 /* Character Length */
174#define COR1_5BITS 0x00 /* 5 bits */
175#define COR1_6BITS 0x01 /* 6 bits */
176#define COR1_7BITS 0x02 /* 7 bits */
177#define COR1_8BITS 0x03 /* 8 bits */
178
179
180/* Channel Option Register 2 (R/W) */
181
182#define COR2_IXM 0x80 /* Implied XON mode */
183#define COR2_TXIBE 0x40 /* Enable In-Band (XON/XOFF) Flow Control */
184#define COR2_ETC 0x20 /* Embedded Tx Commands Enable */
185#define COR2_LLM 0x10 /* Local Loopback Mode */
186#define COR2_RLM 0x08 /* Remote Loopback Mode */
187#define COR2_RTSAO 0x04 /* RTS Automatic Output Enable */
188#define COR2_CTSAE 0x02 /* CTS Automatic Enable */
189#define COR2_DSRAE 0x01 /* DSR Automatic Enable */
190
191
192/* Channel Option Register 3 (R/W) */
193
194#define COR3_XONCH 0x80 /* XON is a pair of characters (1 & 3) */
195#define COR3_XOFFCH 0x40 /* XOFF is a pair of characters (2 & 4) */
196#define COR3_FCT 0x20 /* Flow-Control Transparency Mode */
197#define COR3_SCDE 0x10 /* Special Character Detection Enable */
198#define COR3_RXTH 0x0f /* RX FIFO Threshold value (1-8) */
199
200
201/* Channel Control Status Register (R/O) */
202
203#define CCSR_RXEN 0x80 /* Receiver Enabled */
204#define CCSR_RXFLOFF 0x40 /* Receive Flow Off (XOFF was sent) */
205#define CCSR_RXFLON 0x20 /* Receive Flow On (XON was sent) */
206#define CCSR_TXEN 0x08 /* Transmitter Enabled */
207#define CCSR_TXFLOFF 0x04 /* Transmit Flow Off (got XOFF) */
208#define CCSR_TXFLON 0x02 /* Transmit Flow On (got XON) */
209
210
211/* Modem Change Option Register 1 (R/W) */
212
213#define MCOR1_DSRZD 0x80 /* Detect 0->1 transition of DSR */
214#define MCOR1_CDZD 0x40 /* Detect 0->1 transition of CD */
215#define MCOR1_CTSZD 0x20 /* Detect 0->1 transition of CTS */
216#define MCOR1_DTRTH 0x0f /* Auto DTR flow control Threshold (1-8) */
217#define MCOR1_NODTRFC 0x0 /* Automatic DTR flow control disabled */
218
219
220/* Modem Change Option Register 2 (R/W) */
221
222#define MCOR2_DSROD 0x80 /* Detect 1->0 transition of DSR */
223#define MCOR2_CDOD 0x40 /* Detect 1->0 transition of CD */
224#define MCOR2_CTSOD 0x20 /* Detect 1->0 transition of CTS */
225
226/* Modem Change Register (R/W) */
227
228#define MCR_DSRCHG 0x80 /* DSR Changed */
229#define MCR_CDCHG 0x40 /* CD Changed */
230#define MCR_CTSCHG 0x20 /* CTS Changed */
231
232
233/* Modem Signal Value Register (R/W) */
234
235#define MSVR_DSR 0x80 /* Current state of DSR input */
236#define MSVR_CD 0x40 /* Current state of CD input */
237#define MSVR_CTS 0x20 /* Current state of CTS input */
238#define MSVR_DTR 0x02 /* Current state of DTR output */
239#define MSVR_RTS 0x01 /* Current state of RTS output */
240
241
242/* Escape characters */
243
244#define CD186x_C_ESC 0x00 /* Escape character */
245#define CD186x_C_SBRK 0x81 /* Start sending BREAK */
246#define CD186x_C_DELAY 0x82 /* Delay output */
247#define CD186x_C_EBRK 0x83 /* Stop sending BREAK */
248
249#define SRSR_RREQint 0x10 /* This chip wants "rec" serviced */
250#define SRSR_TREQint 0x04 /* This chip wants "transmit" serviced */
251#define SRSR_MREQint 0x01 /* This chip wants "mdm change" serviced */
252
253
254
255#define SRCR_PKGTYPE 0x80
256#define SRCR_REGACKEN 0x40
257#define SRCR_DAISYEN 0x20
258#define SRCR_GLOBPRI 0x10
259#define SRCR_UNFAIR 0x08
260#define SRCR_AUTOPRI 0x02
261#define SRCR_PRISEL 0x01
262
263