/*      $NetBSD: kbdreg.h,v 1.5 2022/01/01 22:01:18 andvar Exp $        */
/*      $OpenBSD: kbdreg.h,v 1.3 1996/09/04 21:18:24 pefo Exp $ */

/*
* Copyright (c) 1996 Per Fogelstrom
* 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.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by Per Fogelstrom.
* 4. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission
*
* 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.
*/
/*
* Keyboard definitions
*
*/

#define KBSTATP         (0x61)  /* controller status port (I) */
#define  KBS_DIB        0x01    /* data in buffer */
#define  KBS_IBF        0x02    /* input buffer low */
#define  KBS_WARM       0x04    /* input buffer low */
#define  KBS_OCMD       0x08    /* output buffer has command */
#define  KBS_NOSEC      0x10    /* security lock not engaged */
#define  KBS_TERR       0x20    /* transmission error */
#define  KBS_RERR       0x40    /* receive error */
#define  KBS_PERR       0x80    /* parity error */

#define KBCMDP          (0x61)  /* controller port (O) */
#define KBDATAP         (0x60)  /* data port (I) */
#define KBOUTP          (0x60)  /* data port (O) */

#define K_RDCMDBYTE     0x20
#define K_LDCMDBYTE     0x60

#define KC8_TRANS       0x40    /* convert to old scan codes */
#define KC8_MDISABLE    0x20    /* disable mouse */
#define KC8_KDISABLE    0x10    /* disable keyboard */
#define KC8_IGNSEC      0x08    /* ignore security lock */
#define KC8_CPU         0x04    /* exit from protected mode reset */
#define KC8_MENABLE     0x02    /* enable mouse interrupt */
#define KC8_KENABLE     0x01    /* enable keyboard interrupt */
#define CMDBYTE         (KC8_TRANS|KC8_CPU|KC8_MENABLE|KC8_KENABLE)

/* keyboard commands */
#define KBC_RESET       0xFF    /* reset the keyboard */
#define KBC_RESEND      0xFE    /* request the keyboard resend the last byte */
#define KBC_SETDEFAULT  0xF6    /* resets keyboard to its power-on defaults */
#define KBC_DISABLE     0xF5    /* as per KBC_SETDEFAULT, but also disable key scanning */
#define KBC_ENABLE      0xF4    /* enable key scanning */
#define KBC_TYPEMATIC   0xF3    /* set typematic rate and delay */
#define KBC_SETTABLE    0xF0    /* set scancode translation table */
#define KBC_MODEIND     0xED    /* set mode indicators (i.e. LEDs) */
#define KBC_ECHO        0xEE    /* request an echo from the keyboard */

/* keyboard responses */
#define KBR_EXTENDED    0xE0    /* extended key sequence */
#define KBR_RESEND      0xFE    /* needs resend of command */
#define KBR_ACK         0xFA    /* received a valid command */
#define KBR_OVERRUN     0x00    /* flooded */
#define KBR_FAILURE     0xFD    /* diagnostic failure */
#define KBR_BREAK       0xF0    /* break code prefix - sent on key release */
#define KBR_RSTDONE     0xAA    /* reset complete */
#define KBR_ECHO        0xEE    /* echo response */

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