drivers/usb/serial/keyspan_usa67msg.h

Source file repositories/reference/linux-study-clean/drivers/usb/serial/keyspan_usa67msg.h

File Facts

System
Linux kernel
Corpus path
drivers/usb/serial/keyspan_usa67msg.h
Extension
.h
Size
8651 bytes
Lines
256
Domain
Driver Families
Bucket
drivers/usb
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

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

Annotation

Implementation Notes