freebsd-dev/sys/dev/scc/scc_bus.h
Marcel Moolenaar 6174e6ed12 Add scc(4), a driver for serial communications controllers. These
controllers typically have multiple channels and support a number
of serial communications protocols. The scc(4) driver is itself
an umbrella driver that delegates the control over each channel
and mode to a subordinate driver (like uart(4)).
The scc(4) driver supports the Siemens SAB 82532 and the Zilog
Z8530 and replaces puc(4) for these devices.
2006-03-30 18:33:22 +00:00

52 lines
1.8 KiB
C

/*-
* Copyright (c) 2004-2006 Marcel Moolenaar
* All rights reserved.
*
* 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 the above copyright
* notice, this list of conditions and the following disclaimer.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*
* $FreeBSD$
*/
#ifndef _DEV_SCC_BUS_H_
#define _DEV_SCC_BUS_H_
#include <sys/serial.h>
#include <serdev_if.h>
#define SCC_IVAR_CHANNEL 0
#define SCC_IVAR_CLASS 1
#define SCC_IVAR_CLOCK 2
#define SCC_IVAR_MODE 3
#define SCC_IVAR_REGSHFT 4
#define SCC_IVAR_HWMTX 5
/* Hardware class -- the SCC type. */
#define SCC_CLASS_SAB82532 0
#define SCC_CLASS_Z8530 1
/* The possible modes supported by the SCC. */
#define SCC_MODE_ASYNC 0x01
#define SCC_MODE_BISYNC 0x02
#define SCC_MODE_HDLC 0x04
#endif /* _DEV_SCC_BUS_H_ */