1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_I8042_H 27 #define _SYS_I8042_H 28 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 /* 34 * Here's the interface to the virtual registers on the device. 35 * 36 * Normal interrupt-driven I/O: 37 * 38 * I8042_INT_INPUT_AVAIL 39 * Interrupt mode input bytes available? Zero = No. 40 * I8042_INT_INPUT_DATA 41 * Fetch interrupt mode input byte. 42 * I8042_INT_OUTPUT_DATA 43 * Interrupt mode output byte. 44 * 45 * Polled I/O, used by (e.g.) kmdb, when normal system services are 46 * unavailable: 47 * 48 * I8042_POLL_INPUT_AVAIL 49 * Polled mode input bytes available? Zero = No. 50 * I8042_POLL_INPUT_DATA 51 * Polled mode input byte. 52 * I8042_POLL_OUTPUT_DATA 53 * Polled mode output byte. 54 */ 55 56 #define I8042_INT_INPUT_AVAIL 0x00 57 #define I8042_INT_INPUT_DATA 0x01 58 #define I8042_INT_OUTPUT_DATA 0x03 59 #define I8042_INT_CMD_PLUS_PARAM 0x05 /* See comment below */ 60 #define I8042_POLL_INPUT_AVAIL 0x10 61 #define I8042_POLL_INPUT_DATA 0x11 62 #define I8042_POLL_OUTPUT_DATA 0x13 63 #define I8042_POLL_CMD_PLUS_PARAM 0x15 /* See comment below */ 64 65 /* 66 * The I8042_INT_CMD_PLUS_PARAM and I8042_POLL_CMD_PLUS_PARAM virtual 67 * registers are meant to be used with i8042_rep_put8() [via 68 * ddi_rep_put8 in child drivers], which is designed to allow commands 69 * that have responses (or that have responses plus an option byte) to 70 * execute atomically with respect to commands from other children 71 * (some 8042 implementations get confused when other child devices 72 * intersperse their own commands while a command to a different 73 * 8042-connected device is in flight). 74 */ 75 76 /* Softint priority used */ 77 #define I8042_SOFTINT_PRI 4 78 79 #ifdef __cplusplus 80 } 81 #endif 82 83 #endif /* _SYS_I8042_H */ 84