i8042.h revision 15bfc6b75fa0acab2947977e84e0a9f492aca328
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_I8042_H
#define _SYS_I8042_H
#ifdef __cplusplus
extern "C" {
#endif
/*
* Here's the interface to the virtual registers on the device.
*
* Normal interrupt-driven I/O:
*
* I8042_INT_INPUT_AVAIL
* Interrupt mode input bytes available? Zero = No.
* I8042_INT_INPUT_DATA
* Fetch interrupt mode input byte.
* I8042_INT_OUTPUT_DATA
* Interrupt mode output byte.
*
* Polled I/O, used by (e.g.) kmdb, when normal system services are
* unavailable:
*
* I8042_POLL_INPUT_AVAIL
* Polled mode input bytes available? Zero = No.
* I8042_POLL_INPUT_DATA
* Polled mode input byte.
* I8042_POLL_OUTPUT_DATA
* Polled mode output byte.
*/
#define I8042_INT_INPUT_AVAIL 0x00
#define I8042_INT_INPUT_DATA 0x01
#define I8042_INT_OUTPUT_DATA 0x03
#define I8042_POLL_INPUT_AVAIL 0x10
#define I8042_POLL_INPUT_DATA 0x11
#define I8042_POLL_OUTPUT_DATA 0x13
/*
* The I8042_LOCK and I8042_UNLOCK virtual
* registers are meant to be used by child drivers that require exclusive
* access to the 8042 registers for an atomic transaction (e.g. keyboard
* enable, mouse reset) that consists of multiple single-byte commands
* and (possibly) their arguments.
*/
/* Softint priority used */
#define I8042_SOFTINT_PRI 4
#ifdef __cplusplus
}
#endif
#endif /* _SYS_I8042_H */