drivers/usb/serial/keyspan_usa90msg.h

   1 /* SPDX-License-Identifier: BSD-3-Clause */
   2 /*
   3         usa90msg.h
   4
   5         Copyright (c) 1998-2003 InnoSys Incorporated.  All Rights Reserved
   6         This file is available under a BSD-style copyright
   7
   8         Keyspan USB Async Message Formats for the USA19HS
   9
  10         Redistribution and use in source and binary forms, with or without
  11         modification, are permitted provided that the following conditions are
  12         met:
  13
  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:
  18
  19                 Copyright (c) 1998-2003 InnoSys Incorporated.  All Rights Reserved
  20
  21                 This file is available under a BSD-style copyright
  22
  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
  25         permission.
  26
  27         THIS SOFTWARE IS PROVIDED BY INNOSYS CORP. ``AS IS'' AND ANY EXPRESS OR
  28         IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  29         OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
  30         NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  31         INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  32         (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  33         SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  34         CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  35         LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  36         OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  37         SUCH DAMAGE.
  38
  39         Revisions:
  40
  41         2003feb14               add setTxMode/txMode  and cancelRxXoff to portControl
  42         2003mar21               change name of PARITY_0/1 to add MARK/SPACE
  43 */
  44
  45 #ifndef __USA90MSG__
  46 #define __USA90MSG__
  47
  48 struct keyspan_usa90_portControlMessage
  49 {
  50         /*
  51                 there are three types of "commands" sent in the control message:
  52
  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):
  56         */
  57
  58         u8      setClocking,    // host requests baud rate be set
  59                 baudLo,                 // host does baud divisor calculation
  60                 baudHi,                 // host does baud divisor calculation
  61
  62                 setLcr,                 // host requests lcr be set
  63                 lcr,                    // use PARITY, STOPBITS, DATABITS below
  64
  65                 setRxMode,              // set receive mode
  66                 rxMode,                 // RXMODE_DMA or RXMODE_BYHAND
  67
  68                 setTxMode,              // set transmit mode
  69                 txMode,                 // TXMODE_DMA or TXMODE_BYHAND
  70
  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
  79
  80                 sendChar,               // host requests char transmitted immediately
  81                 txChar,                 // character to send
  82
  83                 setRts,                 // host requests RTS output be set
  84                 rts,                    // 1=on, 0=off
  85                 setDtr,                 // host requests DTR output be set
  86                 dtr;                    // 1=on, 0=off
  87
  88
  89         /*
  90                 2.      configuration data which is simply used as is
  91                         and must be specified correctly in every host message.
  92         */
  93
  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...
  97         /*
  98                 3.      Firmware states which cause actions if they change
  99                 and must be specified correctly in every host message.
 100         */
 101
 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
 106
 107         /*
 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
 111                         is respected
 112         */
 113
 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
 118 };
 119
 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
 133
 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)
 139
 140 #define         RXFLOW_XOFF                     0x10
 141 #define         RXFLOW_RTS                      0x20
 142 #define         RXFLOW_DTR                      0x40
 143 #define         RXFLOW_DSR_SENSITIVITY  0x80
 144
 145 #define         RXMODE_BYHAND           0x00
 146 #define         RXMODE_DMA                      0x02
 147
 148 #define         TXMODE_BYHAND           0x00
 149 #define         TXMODE_DMA                      0x02
 150
 151
 152 // all things called "StatusMessage" are sent on the status endpoint
 153
 154 struct keyspan_usa90_portStatusMessage
 155 {
 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
 170 };
 171
 172 // bits in RX data message when STAT byte is included
 173
 174 #define RXERROR_OVERRUN         0x02
 175 #define RXERROR_PARITY          0x04
 176 #define RXERROR_FRAMING         0x08
 177 #define RXERROR_BREAK           0x10
 178
 179 #define PORTSTATE_ENABLED       0x80
 180 #define PORTSTATE_TXFLUSH       0x01
 181 #define PORTSTATE_TXBREAK       0x02
 182 #define PORTSTATE_LOOPBACK      0x04
 183
 184 // MSR bits
 185
 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
 190
 191 #define USA_MSR_CTS                     0x10            // current state of CTS
 192 #define USA_MSR_DSR                     0x20
 193 #define USA_USA_MSR_RI                  0x40
 194 #define MSR_DCD                         0x80
 195
 196 // ie: the maximum length of an endpoint buffer
 197 #define         MAX_DATA_LEN                    64
 198
 199 #endif