i8042.h revision bb2d7d5e570878bccd3de72f5900e62e3fe903a6
/*
* 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 2008 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_INT_CMD_PLUS_PARAM and I8042_POLL_CMD_PLUS_PARAM virtual
* registers are meant to be used with i8042_rep_put8() [via
* ddi_rep_put8 in child drivers], which is designed to allow commands
* that have responses (or that have responses plus an option byte) to
* execute atomically with respect to commands from other children
* (some 8042 implementations get confused when other child devices
* intersperse their own commands while a command to a different
* 8042-connected device is in flight).
*/
/* Softint priority used */
#define I8042_SOFTINT_PRI 4
#ifdef __cplusplus
}
#endif
#endif /* _SYS_I8042_H */