256 lines
8.4 KiB
C
256 lines
8.4 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause */
|
|
/*
|
|
usa67msg.h
|
|
|
|
Copyright (c) 1998-2007 InnoSys Incorporated. All Rights Reserved
|
|
This file is available under a BSD-style copyright
|
|
|
|
Keyspan USB Async Firmware to run on Anchor FX1
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are
|
|
met:
|
|
|
|
1. Redistributions of source code must retain this licence text
|
|
without modification, this list of conditions, and the following
|
|
disclaimer. The following copyright notice must appear immediately at
|
|
the beginning of all source files:
|
|
|
|
Copyright (c) 1998-2007 InnoSys Incorporated. All Rights Reserved
|
|
|
|
This file is available under a BSD-style copyright
|
|
|
|
2. Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
|
|
3. The name of InnoSys Incorprated may not be used to endorse or promote
|
|
products derived from this software without specific prior written
|
|
permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY INNOSYS CORP. ``AS IS'' AND ANY EXPRESS OR
|
|
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
|
|
NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
|
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
SUCH DAMAGE.
|
|
|
|
Fourth revision: This message format supports the USA28XG
|
|
|
|
Buffer formats for RX/TX data messages are not defined by
|
|
a structure, but are described here:
|
|
|
|
USB OUT (host -> USAxx, transmit) messages contain a
|
|
REQUEST_ACK indicator (set to 0xff to request an ACK at the
|
|
completion of transmit; 0x00 otherwise), followed by data:
|
|
|
|
RQSTACK DAT DAT DAT ...
|
|
|
|
with a total data length of up to 63.
|
|
|
|
USB IN (USAxx -> host, receive) messages begin with a status
|
|
byte in which the 0x80 bit is either:
|
|
|
|
(a) 0x80 bit clear
|
|
indicates that the bytes following it are all data
|
|
bytes:
|
|
|
|
STAT DATA DATA DATA DATA DATA ...
|
|
|
|
for a total of up to 63 DATA bytes,
|
|
|
|
or:
|
|
|
|
(b) 0x80 bit set
|
|
indiates that the bytes following alternate data and
|
|
status bytes:
|
|
|
|
STAT DATA STAT DATA STAT DATA STAT DATA ...
|
|
|
|
for a total of up to 32 DATA bytes.
|
|
|
|
The valid bits in the STAT bytes are:
|
|
|
|
OVERRUN 0x02
|
|
PARITY 0x04
|
|
FRAMING 0x08
|
|
BREAK 0x10
|
|
|
|
Notes:
|
|
|
|
(1) The OVERRUN bit can appear in either (a) or (b) format
|
|
messages, but the but the PARITY/FRAMING/BREAK bits
|
|
only appear in (b) format messages.
|
|
(2) For the host to determine the exact point at which the
|
|
overrun occurred (to identify the point in the data
|
|
stream at which the data was lost), it needs to count
|
|
128 characters, starting at the first character of the
|
|
message in which OVERRUN was reported; the lost character(s)
|
|
would have been received between the 128th and 129th
|
|
characters.
|
|
(3) An RX data message in which the first byte has 0x80 clear
|
|
serves as a "break off" indicator.
|
|
|
|
revision history:
|
|
|
|
1999feb10 add reportHskiaChanges to allow us to ignore them
|
|
1999feb10 add txAckThreshold for fast+loose throughput enhancement
|
|
1999mar30 beef up support for RX error reporting
|
|
1999apr14 add resetDataToggle to control message
|
|
2000jan04 merge with usa17msg.h
|
|
2000jun01 add extended BSD-style copyright text
|
|
2001jul05 change message format to improve OVERRUN case
|
|
2002jun05 update copyright date, improve comments
|
|
2006feb06 modify for FX1 chip
|
|
|
|
*/
|
|
|
|
#ifndef __USA67MSG__
|
|
#define __USA67MSG__
|
|
|
|
|
|
// all things called "ControlMessage" are sent on the 'control' endpoint
|
|
|
|
typedef struct keyspan_usa67_portControlMessage
|
|
{
|
|
u8 port; // 0 or 1 (selects port)
|
|
/*
|
|
there are three types of "commands" sent in the control message:
|
|
|
|
1. configuration changes which must be requested by setting
|
|
the corresponding "set" flag (and should only be requested
|
|
when necessary, to reduce overhead on the device):
|
|
*/
|
|
u8 setClocking, // host requests baud rate be set
|
|
baudLo, // host does baud divisor calculation
|
|
baudHi, // baudHi is only used for first port (gives lower rates)
|
|
externalClock_txClocking,
|
|
// 0=internal, other=external
|
|
|
|
setLcr, // host requests lcr be set
|
|
lcr, // use PARITY, STOPBITS, DATABITS below
|
|
|
|
setFlowControl, // host requests flow control be set
|
|
ctsFlowControl, // 1=use CTS flow control, 0=don't
|
|
xonFlowControl, // 1=use XON/XOFF flow control, 0=don't
|
|
xonChar, // specified in current character format
|
|
xoffChar, // specified in current character format
|
|
|
|
setTxTriState_setRts,
|
|
// host requests TX tri-state be set
|
|
txTriState_rts, // 1=active (normal), 0=tristate (off)
|
|
|
|
setHskoa_setDtr,
|
|
// host requests HSKOA output be set
|
|
hskoa_dtr, // 1=on, 0=off
|
|
|
|
setPrescaler, // host requests prescalar be set (default: 13)
|
|
prescaler; // specified as N/8; values 8-ff are valid
|
|
// must be set any time internal baud rate is set;
|
|
// must not be set when external clocking is used
|
|
|
|
/*
|
|
3. configuration data which is simply used as is (no overhead,
|
|
but must be specified correctly in every host message).
|
|
*/
|
|
u8 forwardingLength, // forward when this number of chars available
|
|
reportHskiaChanges_dsrFlowControl,
|
|
// 1=normal; 0=ignore external clock
|
|
// 1=use DSR flow control, 0=don't
|
|
txAckThreshold, // 0=not allowed, 1=normal, 2-255 deliver ACK faster
|
|
loopbackMode; // 0=no loopback, 1=loopback enabled
|
|
|
|
/*
|
|
4. commands which are flags only; these are processed in order
|
|
(so that, e.g., if both _txOn and _txOff flags are set, the
|
|
port ends in a TX_OFF state); any non-zero value is respected
|
|
*/
|
|
u8 _txOn, // enable transmitting (and continue if there's data)
|
|
_txOff, // stop transmitting
|
|
txFlush, // toss outbound data
|
|
txBreak, // turn on break (cleared by _txOn)
|
|
rxOn, // turn on receiver
|
|
rxOff, // turn off receiver
|
|
rxFlush, // toss inbound data
|
|
rxForward, // forward all inbound data, NOW (as if fwdLen==1)
|
|
returnStatus, // return current status (even if it hasn't changed)
|
|
resetDataToggle;// reset data toggle state to DATA0
|
|
|
|
} keyspan_usa67_portControlMessage;
|
|
|
|
// defines for bits in lcr
|
|
#define USA_DATABITS_5 0x00
|
|
#define USA_DATABITS_6 0x01
|
|
#define USA_DATABITS_7 0x02
|
|
#define USA_DATABITS_8 0x03
|
|
#define STOPBITS_5678_1 0x00 // 1 stop bit for all byte sizes
|
|
#define STOPBITS_5_1p5 0x04 // 1.5 stop bits for 5-bit byte
|
|
#define STOPBITS_678_2 0x04 // 2 stop bits for 6/7/8-bit byte
|
|
#define USA_PARITY_NONE 0x00
|
|
#define USA_PARITY_ODD 0x08
|
|
#define USA_PARITY_EVEN 0x18
|
|
#define PARITY_1 0x28
|
|
#define PARITY_0 0x38
|
|
|
|
// all things called "StatusMessage" are sent on the status endpoint
|
|
|
|
typedef struct keyspan_usa67_portStatusMessage // one for each port
|
|
{
|
|
u8 port, // 0=first, 1=second, other=see below
|
|
hskia_cts, // reports HSKIA pin
|
|
gpia_dcd, // reports GPIA pin
|
|
_txOff, // port has been disabled (by host)
|
|
_txXoff, // port is in XOFF state (either host or RX XOFF)
|
|
txAck, // indicates a TX message acknowledgement
|
|
rxEnabled, // as configured by rxOn/rxOff 1=on, 0=off
|
|
controlResponse;// 1=a control message has been processed
|
|
} keyspan_usa67_portStatusMessage;
|
|
|
|
// bits in RX data message when STAT byte is included
|
|
#define RXERROR_OVERRUN 0x02
|
|
#define RXERROR_PARITY 0x04
|
|
#define RXERROR_FRAMING 0x08
|
|
#define RXERROR_BREAK 0x10
|
|
|
|
typedef struct keyspan_usa67_globalControlMessage
|
|
{
|
|
u8 port, // 3
|
|
sendGlobalStatus, // 2=request for two status responses
|
|
resetStatusToggle, // 1=reset global status toggle
|
|
resetStatusCount; // a cycling value
|
|
} keyspan_usa67_globalControlMessage;
|
|
|
|
typedef struct keyspan_usa67_globalStatusMessage
|
|
{
|
|
u8 port, // 3
|
|
sendGlobalStatus, // from request, decremented
|
|
resetStatusCount; // as in request
|
|
} keyspan_usa67_globalStatusMessage;
|
|
|
|
typedef struct keyspan_usa67_globalDebugMessage
|
|
{
|
|
u8 port, // 2
|
|
a,
|
|
b,
|
|
c,
|
|
d;
|
|
} keyspan_usa67_globalDebugMessage;
|
|
|
|
// ie: the maximum length of an FX1 endpoint buffer
|
|
#define MAX_DATA_LEN 64
|
|
|
|
// update status approx. 60 times a second (16.6666 ms)
|
|
#define STATUS_UPDATE_INTERVAL 16
|
|
|
|
// status rationing tuning value (each port gets checked each n ms)
|
|
#define STATUS_RATION 10
|
|
|
|
#endif
|
|
|
|
|