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/* $OpenBSD: kbdreg.h,v 1.1 1998/01/28 11:14:43 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.
*/
#ifndef _KBDREG_H_
#define _KBDREG_H_
/*
* Keyboard controller definitions
*/
#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 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 /* diagnosic failure */
#define KBR_BREAK 0xF0 /* break code prefix - sent on key release */
#define KBR_RSTDONE 0xAA /* reset complete */
#define KBR_ECHO 0xEE /* echo response */
#ifdef _KERNEL
static __inline int kb_output_wait __P((void));
static __inline int kb_input_wait __P((void));
static __inline void kb_input_flush __P((void));
static __inline u_int8_t kb_get8042 __P((void));
static __inline int kb_put8042 __P((u_char));
static int kb_cmd_port;
static int kb_data_port;
static __inline int
kb_output_wait()
{
int to = 100000;
while(to--) {
if((inb(kb_cmd_port) & KBS_IBF) == 0) {
DELAY(10);
return(1);
}
}
return(0);
}
static __inline int
kb_input_wait()
{
int to = 100000;
while(to--) {
if((inb(kb_cmd_port) & KBS_DIB) == 0) {
DELAY(10);
return(1);
}
}
return(0);
}
static __inline void
kb_input_flush()
{
u_int c;
while((c = inb(kb_cmd_port) & (KBS_DIB | KBS_IBF))) {
if(c == KBS_DIB) {
DELAY(10);
c = inb(kb_data_port);
}
}
}
static __inline u_int8_t
kb_get8042()
{
if(!kb_output_wait())
return(0);
outb(kb_cmd_port, K_LDCMDBYTE);
if(!kb_input_wait())
return(0);
return(inb(kb_data_port));
}
static __inline int
kb_put8042(v)
u_char v;
{
if(!kb_output_wait())
return(0);
outb(kb_cmd_port, K_LDCMDBYTE);
if(!kb_output_wait())
return(0);
outb(kb_data_port, v);
return(1);
}
#endif /* _KERNEL */
#endif /* _KBDREG_H_ */
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