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|
/*++
Copyright (c) 1991 Microsoft Corporation
Module Name:
Kbdtest.c
Abstract:
This module implements the Keyboard and mouse test for the self-test.
Author:
Lluis Abello (lluis) 10-Feb-1991
Environment:
Rom self-test.
Revision History:
--*/
#include <ntos.h>
#include "iodevice.h"
#include "kbdmouse.h"
#include "ioaccess.h"
volatile ULONG TimerTicks;
VOID
ClearKbdFifo(
)
/*++
Routine Description:
This routine empties the Keyboard controller Fifo.
Arguments:
None.
Return Value:
None.
--*/
{
UCHAR Trash, Stat;
volatile Timeout;
//
// wait until the previous command is processed.
//
while ((READ_REGISTER_UCHAR(&KEYBOARD_READ->Status) & KBD_IBF_MASK) != 0) {
}
while ((READ_REGISTER_UCHAR(&KEYBOARD_READ->Status) & KBD_OBF_MASK) != 0) {
Trash= READ_REGISTER_UCHAR(&KEYBOARD_READ->Data);
for (Timeout=0;Timeout<10000;Timeout++) {
}
}
}
BOOLEAN
GetKbdData(
PUCHAR C,
ULONG msec
)
/*++
Routine Description:
This routine polls the Status Register until Data is available or timeout,
then it reads and returns the Data.
Arguments:
C - pointer to a byte where to write the read value
msec - time-out time in milliseconds
Return Value:
TRUE if timeout, FALSE if OK;
--*/
{
TimerTicks=msec;
while (TimerTicks) {
if (READ_REGISTER_UCHAR(&KEYBOARD_READ->Status) & KBD_OBF_MASK) {
*C = READ_REGISTER_UCHAR(&KEYBOARD_READ->Data);
return FALSE;
}
}
return TRUE;
}
BOOLEAN
SendKbdData(
IN UCHAR Data
)
/*++
Routine Description:
This routine polls the Status Register until the controller is ready to
accept a data or timeout, then it send the Data.
Arguments:
None.
Return Value:
TRUE if timeout, FALSE if OK;
--*/
{
ULONG i;
for (i=0; i <KBD_TIMEOUT; i++) {
if ((READ_REGISTER_UCHAR(&KEYBOARD_READ->Status) & KBD_IBF_MASK) == 0) {
WRITE_REGISTER_UCHAR(&KEYBOARD_WRITE->Data,Data);
return FALSE;
}
}
return TRUE;
}
BOOLEAN
SendKbdCommand(
IN UCHAR Command
)
/*++
Routine Description:
This routine polls the Status Register until the controller is ready to
accept a command or timeout, then it send the Command.
Arguments:
None.
Return Value:
TRUE if timeout, FALSE if OK;
--*/
{
ULONG i;
for (i=0; i <KBD_TIMEOUT; i++) {
if ((READ_REGISTER_UCHAR(&KEYBOARD_READ->Status) & KBD_IBF_MASK) == 0) {
WRITE_REGISTER_UCHAR(&KEYBOARD_WRITE->Command,Command);
return FALSE;
}
}
return TRUE;
}
ULONG
InitKeyboard(
)
/*++
Routine Description:
This routine enables amd initializes the keyboard.
Arguments:
None.
Return Value:
FALSE if passed,
TRUE if bad ACK or BAT received,
TIME_OUT if no response is received from the keyboard.
--*/
{
UCHAR Result;
ULONG i;
//
// Send Reset to Keyboard.
//
ClearKbdFifo();
for (;;) {
if (SendKbdData(KbdReset)) {
return TIME_OUT;
}
if (GetKbdData(&Result,1000)) {
return TIME_OUT;
}
if (Result == KbdResend) {
if (GetKbdData(&Result,1000)) {
return TIME_OUT;
}
continue;
}
if (Result != KbdAck) {
return TRUE;
}
if (GetKbdData(&Result,7000)) {
return TIME_OUT;
}
if (Result != KbdBat) {
return TRUE;
}
break;
}
//
// Enable Kbd and Select keyboard Scan code.
//
if (SendKbdCommand(KBD_CTR_ENABLE_KBD)) {
return TIME_OUT;
}
if (SendKbdData(KbdSelScanCode)) {
return TIME_OUT;
}
if (GetKbdData(&Result,1000)) {
return TIME_OUT;
}
if (SendKbdData(1)) { // select Scan code 1
return TIME_OUT;
}
if (GetKbdData(&Result,1000)) {
return TIME_OUT;
}
return FALSE;
}
ULONG
InitKeyboardController(
)
/*++
Routine Description:
This routine Initializes the Keyboard controller.
Arguments:
None.
Return Value:
FALSE if passed,
TRUE if bad response received from keyboard controller,
TIME_OUT if no response is received from the keyboard controller.
--*/
{
UCHAR Result;
//
// Clear both fifos.
//
ClearKbdFifo();
//
// Send Selftest Command. This has to be done before anything else.
//
if (SendKbdCommand(KBD_CTR_SELFTEST)) {
return TIME_OUT;
}
if (GetKbdData(&Result,1000)) {
return TIME_OUT;
}
if (Result != Kbd_Ctr_Selftest_Passed) {
return TRUE;
}
//
// Now the Keyboard and Mouse are disabled.
//
//
// Test Keyboard lines.
//
if (SendKbdCommand(KBD_CTR_KBDLINES_TEST)) {
return TIME_OUT;
}
if (GetKbdData(&Result,1000)) {
return TIME_OUT;
}
if (Result != INTERFACE_NO_ERROR) {
return TRUE;
}
//
// Test Aux lines.
//
if (SendKbdCommand(KBD_CTR_AUXLINES_TEST)) {
return TIME_OUT;
}
if (GetKbdData(&Result,1000)) {
return TIME_OUT;
}
if (Result != INTERFACE_NO_ERROR) {
return TRUE;
}
return FALSE;
}
|
