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/*
 *      linux/drivers/char/riscom8_reg.h  -- RISCom/8 multiport serial driver.
 */
 
/*
 * Definitions for RISCom/8 Async Mux card by SDL Communications, Inc.
 */
 
/*
 * Address mapping between Cirrus Logic CD180 chip internal registers
 * and ISA port addresses:
 *
 *      CL-CD180                A6  A5   A4  A3                      A2 A1 A0
 *      ISA             A15 A14 A13 A12  A11 A10 A9 A8  A7 A6 A5 A4  A3 A2 A1 A0
 */
#define RC_TO_ISA(r)    ((((r)&0x07)<<1) | (((r)&~0x07)<<7))
 
 
/* RISCom/8 On-Board Registers (assuming address translation) */
 
#define RC_RI           0x100   /* Ring Indicator Register (R/O)           */
#define RC_DTR          0x100   /* DTR Register (W/O)                      */
#define RC_BSR          0x101   /* Board Status Register (R/O)             */
#define RC_CTOUT        0x101   /* Clear Timeout (W/O)                     */
 
 
/* Board Status Register */
 
#define RC_BSR_TOUT     0x08     /* Hardware Timeout                       */
#define RC_BSR_RINT     0x04     /* Receiver Interrupt                     */
#define RC_BSR_TINT     0x02     /* Transmitter Interrupt                  */
#define RC_BSR_MINT     0x01     /* Modem Ctl Interrupt                    */
 
 
/* On-board oscillator frequency (in Hz) */
#define RC_OSCFREQ      9830400
 
/* Values of choice for Interrupt ACKs */
#define RC_ACK_MINT     0x81    /* goes to PILR1                           */
#define RC_ACK_RINT     0x82    /* goes to PILR3                           */
#define RC_ACK_TINT     0x84    /* goes to PILR2                           */
 
/* Chip ID (sorry, only one chip now) */
#define RC_ID           0x10
 
/* Definitions for Cirrus Logic CL-CD180 8-port async mux chip */
 
#define CD180_NCH       8       /* Total number of channels                */
#define CD180_TPC       16      /* Ticks per character                     */
#define CD180_NFIFO     8       /* TX FIFO size                            */
 
 
/* Global registers */
 
#define CD180_GIVR      0x40    /* Global Interrupt Vector Register        */
#define CD180_GICR      0x41    /* Global Interrupting Channel Register    */
#define CD180_PILR1     0x61    /* Priority Interrupt Level Register 1     */
#define CD180_PILR2     0x62    /* Priority Interrupt Level Register 2     */
#define CD180_PILR3     0x63    /* Priority Interrupt Level Register 3     */
#define CD180_CAR       0x64    /* Channel Access Register                 */
#define CD180_GFRCR     0x6b    /* Global Firmware Revision Code Register  */
#define CD180_PPRH      0x70    /* Prescaler Period Register High          */
#define CD180_PPRL      0x71    /* Prescaler Period Register Low           */
#define CD180_RDR       0x78    /* Receiver Data Register                  */
#define CD180_RCSR      0x7a    /* Receiver Character Status Register      */
#define CD180_TDR       0x7b    /* Transmit Data Register                  */
#define CD180_EOIR      0x7f    /* End of Interrupt Register               */
 
 
/* Channel Registers */
 
#define CD180_CCR       0x01    /* Channel Command Register                */
#define CD180_IER       0x02    /* Interrupt Enable Register               */
#define CD180_COR1      0x03    /* Channel Option Register 1               */
#define CD180_COR2      0x04    /* Channel Option Register 2               */
#define CD180_COR3      0x05    /* Channel Option Register 3               */
#define CD180_CCSR      0x06    /* Channel Control Status Register         */
#define CD180_RDCR      0x07    /* Receive Data Count Register             */
#define CD180_SCHR1     0x09    /* Special Character Register 1            */
#define CD180_SCHR2     0x0a    /* Special Character Register 2            */
#define CD180_SCHR3     0x0b    /* Special Character Register 3            */
#define CD180_SCHR4     0x0c    /* Special Character Register 4            */
#define CD180_MCOR1     0x10    /* Modem Change Option 1 Register          */
#define CD180_MCOR2     0x11    /* Modem Change Option 2 Register          */
#define CD180_MCR       0x12    /* Modem Change Register                   */
#define CD180_RTPR      0x18    /* Receive Timeout Period Register         */
#define CD180_MSVR      0x28    /* Modem Signal Value Register             */
#define CD180_RBPRH     0x31    /* Receive Baud Rate Period Register High  */
#define CD180_RBPRL     0x32    /* Receive Baud Rate Period Register Low   */
#define CD180_TBPRH     0x39    /* Transmit Baud Rate Period Register High */
#define CD180_TBPRL     0x3a    /* Transmit Baud Rate Period Register Low  */
 
 
/* Global Interrupt Vector Register (R/W) */
 
#define GIVR_ITMASK     0x07     /* Interrupt type mask                     */
#define  GIVR_IT_MODEM   0x01    /* Modem Signal Change Interrupt           */
#define  GIVR_IT_TX      0x02    /* Transmit Data Interrupt                 */
#define  GIVR_IT_RCV     0x03    /* Receive Good Data Interrupt             */
#define  GIVR_IT_REXC    0x07    /* Receive Exception Interrupt             */
 
 
/* Global Interrupt Channel Register (R/W) */
 
#define GICR_CHAN       0x1c    /* Channel Number Mask                     */
#define GICR_CHAN_OFF   2       /* Channel Number Offset                   */
 
 
/* Channel Address Register (R/W) */
 
#define CAR_CHAN        0x07    /* Channel Number Mask                     */
#define CAR_A7          0x08    /* A7 Address Extension (unused)           */
 
 
/* Receive Character Status Register (R/O) */
 
#define RCSR_TOUT       0x80    /* Rx Timeout                              */
#define RCSR_SCDET      0x70    /* Special Character Detected Mask         */
#define  RCSR_NO_SC      0x00   /* No Special Characters Detected          */
#define  RCSR_SC_1       0x10   /* Special Char 1 (or 1 & 3) Detected      */
#define  RCSR_SC_2       0x20   /* Special Char 2 (or 2 & 4) Detected      */
#define  RCSR_SC_3       0x30   /* Special Char 3 Detected                 */
#define  RCSR_SC_4       0x40   /* Special Char 4 Detected                 */
#define RCSR_BREAK      0x08    /* Break has been detected                 */
#define RCSR_PE         0x04    /* Parity Error                            */
#define RCSR_FE         0x02    /* Frame Error                             */
#define RCSR_OE         0x01    /* Overrun Error                           */
 
 
/* Channel Command Register (R/W) (commands in groups can be OR-ed) */
 
#define CCR_HARDRESET   0x81    /* Reset the chip                          */
 
#define CCR_SOFTRESET   0x80    /* Soft Channel Reset                      */
 
#define CCR_CORCHG1     0x42    /* Channel Option Register 1 Changed       */
#define CCR_CORCHG2     0x44    /* Channel Option Register 2 Changed       */
#define CCR_CORCHG3     0x48    /* Channel Option Register 3 Changed       */
 
#define CCR_SSCH1       0x21    /* Send Special Character 1                */
 
#define CCR_SSCH2       0x22    /* Send Special Character 2                */
 
#define CCR_SSCH3       0x23    /* Send Special Character 3                */
 
#define CCR_SSCH4       0x24    /* Send Special Character 4                */
 
#define CCR_TXEN        0x18    /* Enable Transmitter                      */
#define CCR_RXEN        0x12    /* Enable Receiver                         */
 
#define CCR_TXDIS       0x14    /* Disable Transmitter                     */
#define CCR_RXDIS       0x11    /* Disable Receiver                        */
 
 
/* Interrupt Enable Register (R/W) */
 
#define IER_DSR         0x80    /* Enable interrupt on DSR change          */
#define IER_CD          0x40    /* Enable interrupt on CD change           */
#define IER_CTS         0x20    /* Enable interrupt on CTS change          */
#define IER_RXD         0x10    /* Enable interrupt on Receive Data        */
#define IER_RXSC        0x08    /* Enable interrupt on Receive Spec. Char  */
#define IER_TXRDY       0x04    /* Enable interrupt on TX FIFO empty       */
#define IER_TXEMPTY     0x02    /* Enable interrupt on TX completely empty */
#define IER_RET         0x01    /* Enable interrupt on RX Exc. Timeout     */
 
 
/* Channel Option Register 1 (R/W) */
 
#define COR1_ODDP       0x80    /* Odd Parity                              */
#define COR1_PARMODE    0x60    /* Parity Mode mask                        */
#define  COR1_NOPAR      0x00   /* No Parity                               */
#define  COR1_FORCEPAR   0x20   /* Force Parity                            */
#define  COR1_NORMPAR    0x40   /* Normal Parity                           */
#define COR1_IGNORE     0x10    /* Ignore Parity on RX                     */
#define COR1_STOPBITS   0x0c    /* Number of Stop Bits                     */
#define  COR1_1SB        0x00   /* 1 Stop Bit                              */
#define  COR1_15SB       0x04   /* 1.5 Stop Bits                           */
#define  COR1_2SB        0x08   /* 2 Stop Bits                             */
#define COR1_CHARLEN    0x03    /* Character Length                        */
#define  COR1_5BITS      0x00   /* 5 bits                                  */
#define  COR1_6BITS      0x01   /* 6 bits                                  */
#define  COR1_7BITS      0x02   /* 7 bits                                  */
#define  COR1_8BITS      0x03   /* 8 bits                                  */
 
 
/* Channel Option Register 2 (R/W) */
 
#define COR2_IXM        0x80    /* Implied XON mode                        */
#define COR2_TXIBE      0x40    /* Enable In-Band (XON/XOFF) Flow Control  */
#define COR2_ETC        0x20    /* Embedded Tx Commands Enable             */
#define COR2_LLM        0x10    /* Local Loopback Mode                     */
#define COR2_RLM        0x08    /* Remote Loopback Mode                    */
#define COR2_RTSAO      0x04    /* RTS Automatic Output Enable             */
#define COR2_CTSAE      0x02    /* CTS Automatic Enable                    */
#define COR2_DSRAE      0x01    /* DSR Automatic Enable                    */
 
 
/* Channel Option Register 3 (R/W) */
 
#define COR3_XONCH      0x80    /* XON is a pair of characters (1 & 3)     */
#define COR3_XOFFCH     0x40    /* XOFF is a pair of characters (2 & 4)    */
#define COR3_FCT        0x20    /* Flow-Control Transparency Mode          */
#define COR3_SCDE       0x10    /* Special Character Detection Enable      */
#define COR3_RXTH       0x0f    /* RX FIFO Threshold value (1-8)           */
 
 
/* Channel Control Status Register (R/O) */
 
#define CCSR_RXEN       0x80    /* Receiver Enabled                        */
#define CCSR_RXFLOFF    0x40    /* Receive Flow Off (XOFF was sent)        */
#define CCSR_RXFLON     0x20    /* Receive Flow On (XON was sent)          */
#define CCSR_TXEN       0x08    /* Transmitter Enabled                     */
#define CCSR_TXFLOFF    0x04    /* Transmit Flow Off (got XOFF)            */
#define CCSR_TXFLON     0x02    /* Transmit Flow On (got XON)              */
 
 
/* Modem Change Option Register 1 (R/W) */
 
#define MCOR1_DSRZD     0x80    /* Detect 0->1 transition of DSR           */
#define MCOR1_CDZD      0x40    /* Detect 0->1 transition of CD            */
#define MCOR1_CTSZD     0x20    /* Detect 0->1 transition of CTS           */
#define MCOR1_DTRTH     0x0f    /* Auto DTR flow control Threshold (1-8)   */
#define  MCOR1_NODTRFC   0x0     /* Automatic DTR flow control disabled     */
 
 
/* Modem Change Option Register 2 (R/W) */
 
#define MCOR2_DSROD     0x80    /* Detect 1->0 transition of DSR           */
#define MCOR2_CDOD      0x40    /* Detect 1->0 transition of CD            */
#define MCOR2_CTSOD     0x20    /* Detect 1->0 transition of CTS           */
 
 
/* Modem Change Register (R/W) */
 
#define MCR_DSRCHG      0x80    /* DSR Changed                             */
#define MCR_CDCHG       0x40    /* CD Changed                              */
#define MCR_CTSCHG      0x20    /* CTS Changed                             */
 
 
/* Modem Signal Value Register (R/W) */
 
#define MSVR_DSR        0x80    /* Current state of DSR input              */
#define MSVR_CD         0x40    /* Current state of CD input               */
#define MSVR_CTS        0x20    /* Current state of CTS input              */
#define MSVR_DTR        0x02    /* Current state of DTR output             */
#define MSVR_RTS        0x01    /* Current state of RTS output             */
 
 
/* Escape characters */
 
#define CD180_C_ESC     0x00    /* Escape character                        */
#define CD180_C_SBRK    0x81    /* Start sending BREAK                     */
#define CD180_C_DELAY   0x82    /* Delay output                            */
#define CD180_C_EBRK    0x83    /* Stop sending BREAK                      */

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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [char/] [riscom8_reg.h] - Blame information for rev 1774

Line No.	Rev	Author	Line
1	1275	phoenix	`/*`
2			`* linux/drivers/char/riscom8_reg.h -- RISCom/8 multiport serial driver.`
3			`*/`
4
5			`/*`
6			`* Definitions for RISCom/8 Async Mux card by SDL Communications, Inc.`
7			`*/`
8
9			`/*`
10			`* Address mapping between Cirrus Logic CD180 chip internal registers`
11			`* and ISA port addresses:`
12			`*`
13			`* CL-CD180 A6 A5 A4 A3 A2 A1 A0`
14			`* ISA A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0`
15			`*/`
16			`#define RC_TO_ISA(r) ((((r)&0x07)<<1) \| (((r)&~0x07)<<7))`
17
18
19			`/* RISCom/8 On-Board Registers (assuming address translation) */`
20
21			`#define RC_RI 0x100 /* Ring Indicator Register (R/O) */`
22			`#define RC_DTR 0x100 /* DTR Register (W/O) */`
23			`#define RC_BSR 0x101 /* Board Status Register (R/O) */`
24			`#define RC_CTOUT 0x101 /* Clear Timeout (W/O) */`
25
26
27			`/* Board Status Register */`
28
29			`#define RC_BSR_TOUT 0x08 /* Hardware Timeout */`
30			`#define RC_BSR_RINT 0x04 /* Receiver Interrupt */`
31			`#define RC_BSR_TINT 0x02 /* Transmitter Interrupt */`
32			`#define RC_BSR_MINT 0x01 /* Modem Ctl Interrupt */`
33
34
35			`/* On-board oscillator frequency (in Hz) */`
36			`#define RC_OSCFREQ 9830400`
37
38			`/* Values of choice for Interrupt ACKs */`
39			`#define RC_ACK_MINT 0x81 /* goes to PILR1 */`
40			`#define RC_ACK_RINT 0x82 /* goes to PILR3 */`
41			`#define RC_ACK_TINT 0x84 /* goes to PILR2 */`
42
43			`/* Chip ID (sorry, only one chip now) */`
44			`#define RC_ID 0x10`
45
46			`/* Definitions for Cirrus Logic CL-CD180 8-port async mux chip */`
47
48			`#define CD180_NCH 8 /* Total number of channels */`
49			`#define CD180_TPC 16 /* Ticks per character */`
50			`#define CD180_NFIFO 8 /* TX FIFO size */`
51
52
53			`/* Global registers */`
54
55			`#define CD180_GIVR 0x40 /* Global Interrupt Vector Register */`
56			`#define CD180_GICR 0x41 /* Global Interrupting Channel Register */`
57			`#define CD180_PILR1 0x61 /* Priority Interrupt Level Register 1 */`
58			`#define CD180_PILR2 0x62 /* Priority Interrupt Level Register 2 */`
59			`#define CD180_PILR3 0x63 /* Priority Interrupt Level Register 3 */`
60			`#define CD180_CAR 0x64 /* Channel Access Register */`
61			`#define CD180_GFRCR 0x6b /* Global Firmware Revision Code Register */`
62			`#define CD180_PPRH 0x70 /* Prescaler Period Register High */`
63			`#define CD180_PPRL 0x71 /* Prescaler Period Register Low */`
64			`#define CD180_RDR 0x78 /* Receiver Data Register */`
65			`#define CD180_RCSR 0x7a /* Receiver Character Status Register */`
66			`#define CD180_TDR 0x7b /* Transmit Data Register */`
67			`#define CD180_EOIR 0x7f /* End of Interrupt Register */`
68
69
70			`/* Channel Registers */`
71
72			`#define CD180_CCR 0x01 /* Channel Command Register */`
73			`#define CD180_IER 0x02 /* Interrupt Enable Register */`
74			`#define CD180_COR1 0x03 /* Channel Option Register 1 */`
75			`#define CD180_COR2 0x04 /* Channel Option Register 2 */`
76			`#define CD180_COR3 0x05 /* Channel Option Register 3 */`
77			`#define CD180_CCSR 0x06 /* Channel Control Status Register */`
78			`#define CD180_RDCR 0x07 /* Receive Data Count Register */`
79			`#define CD180_SCHR1 0x09 /* Special Character Register 1 */`
80			`#define CD180_SCHR2 0x0a /* Special Character Register 2 */`
81			`#define CD180_SCHR3 0x0b /* Special Character Register 3 */`
82			`#define CD180_SCHR4 0x0c /* Special Character Register 4 */`
83			`#define CD180_MCOR1 0x10 /* Modem Change Option 1 Register */`
84			`#define CD180_MCOR2 0x11 /* Modem Change Option 2 Register */`
85			`#define CD180_MCR 0x12 /* Modem Change Register */`
86			`#define CD180_RTPR 0x18 /* Receive Timeout Period Register */`
87			`#define CD180_MSVR 0x28 /* Modem Signal Value Register */`
88			`#define CD180_RBPRH 0x31 /* Receive Baud Rate Period Register High */`
89			`#define CD180_RBPRL 0x32 /* Receive Baud Rate Period Register Low */`
90			`#define CD180_TBPRH 0x39 /* Transmit Baud Rate Period Register High */`
91			`#define CD180_TBPRL 0x3a /* Transmit Baud Rate Period Register Low */`
92
93
94			`/* Global Interrupt Vector Register (R/W) */`
95
96			`#define GIVR_ITMASK 0x07 /* Interrupt type mask */`
97			`#define GIVR_IT_MODEM 0x01 /* Modem Signal Change Interrupt */`
98			`#define GIVR_IT_TX 0x02 /* Transmit Data Interrupt */`
99			`#define GIVR_IT_RCV 0x03 /* Receive Good Data Interrupt */`
100			`#define GIVR_IT_REXC 0x07 /* Receive Exception Interrupt */`
101
102
103			`/* Global Interrupt Channel Register (R/W) */`
104
105			`#define GICR_CHAN 0x1c /* Channel Number Mask */`
106			`#define GICR_CHAN_OFF 2 /* Channel Number Offset */`
107
108
109			`/* Channel Address Register (R/W) */`
110
111			`#define CAR_CHAN 0x07 /* Channel Number Mask */`
112			`#define CAR_A7 0x08 /* A7 Address Extension (unused) */`
113
114
115			`/* Receive Character Status Register (R/O) */`
116
117			`#define RCSR_TOUT 0x80 /* Rx Timeout */`
118			`#define RCSR_SCDET 0x70 /* Special Character Detected Mask */`
119			`#define RCSR_NO_SC 0x00 /* No Special Characters Detected */`
120			`#define RCSR_SC_1 0x10 /* Special Char 1 (or 1 & 3) Detected */`
121			`#define RCSR_SC_2 0x20 /* Special Char 2 (or 2 & 4) Detected */`
122			`#define RCSR_SC_3 0x30 /* Special Char 3 Detected */`
123			`#define RCSR_SC_4 0x40 /* Special Char 4 Detected */`
124			`#define RCSR_BREAK 0x08 /* Break has been detected */`
125			`#define RCSR_PE 0x04 /* Parity Error */`
126			`#define RCSR_FE 0x02 /* Frame Error */`
127			`#define RCSR_OE 0x01 /* Overrun Error */`
128
129
130			`/* Channel Command Register (R/W) (commands in groups can be OR-ed) */`
131
132			`#define CCR_HARDRESET 0x81 /* Reset the chip */`
133
134			`#define CCR_SOFTRESET 0x80 /* Soft Channel Reset */`
135
136			`#define CCR_CORCHG1 0x42 /* Channel Option Register 1 Changed */`
137			`#define CCR_CORCHG2 0x44 /* Channel Option Register 2 Changed */`
138			`#define CCR_CORCHG3 0x48 /* Channel Option Register 3 Changed */`
139
140			`#define CCR_SSCH1 0x21 /* Send Special Character 1 */`
141
142			`#define CCR_SSCH2 0x22 /* Send Special Character 2 */`
143
144			`#define CCR_SSCH3 0x23 /* Send Special Character 3 */`
145
146			`#define CCR_SSCH4 0x24 /* Send Special Character 4 */`
147
148			`#define CCR_TXEN 0x18 /* Enable Transmitter */`
149			`#define CCR_RXEN 0x12 /* Enable Receiver */`
150
151			`#define CCR_TXDIS 0x14 /* Disable Transmitter */`
152			`#define CCR_RXDIS 0x11 /* Disable Receiver */`
153
154
155			`/* Interrupt Enable Register (R/W) */`
156
157			`#define IER_DSR 0x80 /* Enable interrupt on DSR change */`
158			`#define IER_CD 0x40 /* Enable interrupt on CD change */`
159			`#define IER_CTS 0x20 /* Enable interrupt on CTS change */`
160			`#define IER_RXD 0x10 /* Enable interrupt on Receive Data */`
161			`#define IER_RXSC 0x08 /* Enable interrupt on Receive Spec. Char */`
162			`#define IER_TXRDY 0x04 /* Enable interrupt on TX FIFO empty */`
163			`#define IER_TXEMPTY 0x02 /* Enable interrupt on TX completely empty */`
164			`#define IER_RET 0x01 /* Enable interrupt on RX Exc. Timeout */`
165
166
167			`/* Channel Option Register 1 (R/W) */`
168
169			`#define COR1_ODDP 0x80 /* Odd Parity */`
170			`#define COR1_PARMODE 0x60 /* Parity Mode mask */`
171			`#define COR1_NOPAR 0x00 /* No Parity */`
172			`#define COR1_FORCEPAR 0x20 /* Force Parity */`
173			`#define COR1_NORMPAR 0x40 /* Normal Parity */`
174			`#define COR1_IGNORE 0x10 /* Ignore Parity on RX */`
175			`#define COR1_STOPBITS 0x0c /* Number of Stop Bits */`
176			`#define COR1_1SB 0x00 /* 1 Stop Bit */`
177			`#define COR1_15SB 0x04 /* 1.5 Stop Bits */`
178			`#define COR1_2SB 0x08 /* 2 Stop Bits */`
179			`#define COR1_CHARLEN 0x03 /* Character Length */`
180			`#define COR1_5BITS 0x00 /* 5 bits */`
181			`#define COR1_6BITS 0x01 /* 6 bits */`
182			`#define COR1_7BITS 0x02 /* 7 bits */`
183			`#define COR1_8BITS 0x03 /* 8 bits */`
184
185
186			`/* Channel Option Register 2 (R/W) */`
187
188			`#define COR2_IXM 0x80 /* Implied XON mode */`
189			`#define COR2_TXIBE 0x40 /* Enable In-Band (XON/XOFF) Flow Control */`
190			`#define COR2_ETC 0x20 /* Embedded Tx Commands Enable */`
191			`#define COR2_LLM 0x10 /* Local Loopback Mode */`
192			`#define COR2_RLM 0x08 /* Remote Loopback Mode */`
193			`#define COR2_RTSAO 0x04 /* RTS Automatic Output Enable */`
194			`#define COR2_CTSAE 0x02 /* CTS Automatic Enable */`
195			`#define COR2_DSRAE 0x01 /* DSR Automatic Enable */`
196
197
198			`/* Channel Option Register 3 (R/W) */`
199
200			`#define COR3_XONCH 0x80 /* XON is a pair of characters (1 & 3) */`
201			`#define COR3_XOFFCH 0x40 /* XOFF is a pair of characters (2 & 4) */`
202			`#define COR3_FCT 0x20 /* Flow-Control Transparency Mode */`
203			`#define COR3_SCDE 0x10 /* Special Character Detection Enable */`
204			`#define COR3_RXTH 0x0f /* RX FIFO Threshold value (1-8) */`
205
206
207			`/* Channel Control Status Register (R/O) */`
208
209			`#define CCSR_RXEN 0x80 /* Receiver Enabled */`
210			`#define CCSR_RXFLOFF 0x40 /* Receive Flow Off (XOFF was sent) */`
211			`#define CCSR_RXFLON 0x20 /* Receive Flow On (XON was sent) */`
212			`#define CCSR_TXEN 0x08 /* Transmitter Enabled */`
213			`#define CCSR_TXFLOFF 0x04 /* Transmit Flow Off (got XOFF) */`
214			`#define CCSR_TXFLON 0x02 /* Transmit Flow On (got XON) */`
215
216
217			`/* Modem Change Option Register 1 (R/W) */`
218
219			`#define MCOR1_DSRZD 0x80 /* Detect 0->1 transition of DSR */`
220			`#define MCOR1_CDZD 0x40 /* Detect 0->1 transition of CD */`
221			`#define MCOR1_CTSZD 0x20 /* Detect 0->1 transition of CTS */`
222			`#define MCOR1_DTRTH 0x0f /* Auto DTR flow control Threshold (1-8) */`
223			`#define MCOR1_NODTRFC 0x0 /* Automatic DTR flow control disabled */`
224
225
226			`/* Modem Change Option Register 2 (R/W) */`
227
228			`#define MCOR2_DSROD 0x80 /* Detect 1->0 transition of DSR */`
229			`#define MCOR2_CDOD 0x40 /* Detect 1->0 transition of CD */`
230			`#define MCOR2_CTSOD 0x20 /* Detect 1->0 transition of CTS */`
231
232
233			`/* Modem Change Register (R/W) */`
234
235			`#define MCR_DSRCHG 0x80 /* DSR Changed */`
236			`#define MCR_CDCHG 0x40 /* CD Changed */`
237			`#define MCR_CTSCHG 0x20 /* CTS Changed */`
238
239
240			`/* Modem Signal Value Register (R/W) */`
241
242			`#define MSVR_DSR 0x80 /* Current state of DSR input */`
243			`#define MSVR_CD 0x40 /* Current state of CD input */`
244			`#define MSVR_CTS 0x20 /* Current state of CTS input */`
245			`#define MSVR_DTR 0x02 /* Current state of DTR output */`
246			`#define MSVR_RTS 0x01 /* Current state of RTS output */`
247
248
249			`/* Escape characters */`
250
251			`#define CD180_C_ESC 0x00 /* Escape character */`
252			`#define CD180_C_SBRK 0x81 /* Start sending BREAK */`
253			`#define CD180_C_DELAY 0x82 /* Delay output */`
254			`#define CD180_C_EBRK 0x83 /* Stop sending BREAK */`