1 /* SPDX-License-Identifier: BSD-3-Clause */
5 Copyright (c) 1998-2003 InnoSys Incorporated. All Rights Reserved
6 This file is available under a BSD-style copyright
8 Keyspan USB Async Message Formats for the USA19HS
10 Redistribution and use in source and binary forms, with or without
11 modification, are permitted provided that the following conditions are
14 1. Redistributions of source code must retain this licence text
15 without modification, this list of conditions, and the following
16 disclaimer. The following copyright notice must appear immediately at
17 the beginning of all source files:
19 Copyright (c) 1998-2003 InnoSys Incorporated. All Rights Reserved
21 This file is available under a BSD-style copyright
23 2. The name of InnoSys Incorporated may not be used to endorse or promote
24 products derived from this software without specific prior written
27 THIS SOFTWARE IS PROVIDED BY INNOSYS CORP. ``AS IS'' AND ANY EXPRESS OR
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41 2003feb14 add setTxMode/txMode and cancelRxXoff to portControl
42 2003mar21 change name of PARITY_0/1 to add MARK/SPACE
48 struct keyspan_usa90_portControlMessage
51 there are three types of "commands" sent in the control message:
53 1. configuration changes which must be requested by setting
54 the corresponding "set" flag (and should only be requested
55 when necessary, to reduce overhead on the device):
58 u8 setClocking, // host requests baud rate be set
59 baudLo, // host does baud divisor calculation
60 baudHi, // host does baud divisor calculation
62 setLcr, // host requests lcr be set
63 lcr, // use PARITY, STOPBITS, DATABITS below
65 setRxMode, // set receive mode
66 rxMode, // RXMODE_DMA or RXMODE_BYHAND
68 setTxMode, // set transmit mode
69 txMode, // TXMODE_DMA or TXMODE_BYHAND
71 setTxFlowControl, // host requests tx flow control be set
72 txFlowControl , // use TX_FLOW... bits below
73 setRxFlowControl, // host requests rx flow control be set
74 rxFlowControl, // use RX_FLOW... bits below
75 sendXoff, // host requests XOFF transmitted immediately
76 sendXon, // host requests XON char transmitted
77 xonChar, // specified in current character format
78 xoffChar, // specified in current character format
80 sendChar, // host requests char transmitted immediately
81 txChar, // character to send
83 setRts, // host requests RTS output be set
85 setDtr, // host requests DTR output be set
90 2. configuration data which is simply used as is
91 and must be specified correctly in every host message.
94 u8 rxForwardingLength, // forward when this number of chars available
95 rxForwardingTimeout, // (1-31 in ms)
96 txAckSetting; // 0=don't ack, 1=normal, 2-255 TBD...
98 3. Firmware states which cause actions if they change
99 and must be specified correctly in every host message.
102 u8 portEnabled, // 0=disabled, 1=enabled
103 txFlush, // 0=normal, 1=toss outbound data
104 txBreak, // 0=break off, 1=break on
105 loopbackMode; // 0=no loopback, 1=loopback enabled
108 4. commands which are flags only; these are processed in order
109 (so that, e.g., if rxFlush and rxForward flags are set, the
110 port will have no data to forward); any non-zero value
114 u8 rxFlush, // toss inbound data
115 rxForward, // forward all inbound data, NOW (as if fwdLen==1)
116 cancelRxXoff, // cancel any receive XOFF state (_txXoff)
117 returnStatus; // return current status NOW
120 // defines for bits in lcr
121 #define USA_DATABITS_5 0x00
122 #define USA_DATABITS_6 0x01
123 #define USA_DATABITS_7 0x02
124 #define USA_DATABITS_8 0x03
125 #define STOPBITS_5678_1 0x00 // 1 stop bit for all byte sizes
126 #define STOPBITS_5_1p5 0x04 // 1.5 stop bits for 5-bit byte
127 #define STOPBITS_678_2 0x04 // 2 stop bits for 6-8 bit byte
128 #define USA_PARITY_NONE 0x00
129 #define USA_PARITY_ODD 0x08
130 #define USA_PARITY_EVEN 0x18
131 #define PARITY_MARK_1 0x28 // force parity MARK
132 #define PARITY_SPACE_0 0x38 // force parity SPACE
134 #define TXFLOW_CTS 0x04
135 #define TXFLOW_DSR 0x08
136 #define TXFLOW_XOFF 0x01
137 #define TXFLOW_XOFF_ANY 0x02
138 #define TXFLOW_XOFF_BITS (TXFLOW_XOFF | TXFLOW_XOFF_ANY)
140 #define RXFLOW_XOFF 0x10
141 #define RXFLOW_RTS 0x20
142 #define RXFLOW_DTR 0x40
143 #define RXFLOW_DSR_SENSITIVITY 0x80
145 #define RXMODE_BYHAND 0x00
146 #define RXMODE_DMA 0x02
148 #define TXMODE_BYHAND 0x00
149 #define TXMODE_DMA 0x02
152 // all things called "StatusMessage" are sent on the status endpoint
154 struct keyspan_usa90_portStatusMessage
156 u8 msr, // reports the actual MSR register
157 cts, // reports CTS pin
158 dcd, // reports DCD pin
159 dsr, // reports DSR pin
160 ri, // reports RI pin
161 _txXoff, // port is in XOFF state (we received XOFF)
162 rxBreak, // reports break state
163 rxOverrun, // count of overrun errors (since last reported)
164 rxParity, // count of parity errors (since last reported)
165 rxFrame, // count of frame errors (since last reported)
166 portState, // PORTSTATE_xxx bits (useful for debugging)
167 messageAck, // message acknowledgement
168 charAck, // character acknowledgement
169 controlResponse; // (value = returnStatus) a control message has been processed
172 // bits in RX data message when STAT byte is included
174 #define RXERROR_OVERRUN 0x02
175 #define RXERROR_PARITY 0x04
176 #define RXERROR_FRAMING 0x08
177 #define RXERROR_BREAK 0x10
179 #define PORTSTATE_ENABLED 0x80
180 #define PORTSTATE_TXFLUSH 0x01
181 #define PORTSTATE_TXBREAK 0x02
182 #define PORTSTATE_LOOPBACK 0x04
186 #define USA_MSR_dCTS 0x01 // CTS has changed since last report
187 #define USA_MSR_dDSR 0x02
188 #define USA_MSR_dRI 0x04
189 #define USA_MSR_dDCD 0x08
191 #define USA_MSR_CTS 0x10 // current state of CTS
192 #define USA_MSR_DSR 0x20
193 #define USA_USA_MSR_RI 0x40
196 // ie: the maximum length of an endpoint buffer
197 #define MAX_DATA_LEN 64