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|
/** @file
KCS Transport Hook.
Copyright (c) 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "KcsBmc.h"
#include <Library/DebugLib.h>
EFI_STATUS
KcsErrorExit (
UINT64 KcsTimeoutPeriod,
UINT16 KcsPort
)
/*++
Routine Description:
Check the KCS error status
Arguments:
KcsPort - The base port of KCS
Returns:
EFI_DEVICE_ERROR - The device error happened
EFI_SUCCESS - Successfully check the KCS error status
--*/
{
EFI_STATUS Status;
UINT8 KcsData;
EFI_KCS_STATUS KcsStatus;
UINT8 BmcStatus;
UINT8 RetryCount;
UINT64 TimeOut;
TimeOut = 0;
RetryCount = 0;
while (RetryCount < KCS_ABORT_RETRY_COUNT) {
do {
MicroSecondDelay(KCS_DELAY_UNIT);
KcsStatus.RawData = IoRead8 (KcsPort + 1);
if (KcsStatus.RawData == 0xFF || (TimeOut >= KcsTimeoutPeriod)) {
RetryCount = KCS_ABORT_RETRY_COUNT;
break;
}
TimeOut++;
} while (KcsStatus.Status.Ibf);
if (RetryCount >= KCS_ABORT_RETRY_COUNT) {
break;
}
KcsData = KCS_ABORT;
IoWrite8 ((KcsPort + 1), KcsData);
TimeOut = 0;
do {
MicroSecondDelay(KCS_DELAY_UNIT);
KcsStatus.RawData = IoRead8 (KcsPort + 1);
if (KcsStatus.RawData == 0xFF || (TimeOut >= KcsTimeoutPeriod)) {
Status = EFI_DEVICE_ERROR;
goto LabelError;
}
TimeOut++;
} while (KcsStatus.Status.Ibf);
KcsData = IoRead8 (KcsPort);
KcsData = 0x0;
IoWrite8 (KcsPort, KcsData);
TimeOut = 0;
do {
MicroSecondDelay(KCS_DELAY_UNIT);
KcsStatus.RawData = IoRead8 (KcsPort + 1);
if (KcsStatus.RawData == 0xFF || (TimeOut >= KcsTimeoutPeriod)) {
Status = EFI_DEVICE_ERROR;
goto LabelError;
}
TimeOut++;
} while (KcsStatus.Status.Ibf);
if (KcsStatus.Status.State == KcsReadState) {
TimeOut = 0;
do {
MicroSecondDelay(KCS_DELAY_UNIT);
KcsStatus.RawData = IoRead8 (KcsPort + 1);
if (KcsStatus.RawData == 0xFF || (TimeOut >= KcsTimeoutPeriod)) {
Status = EFI_DEVICE_ERROR;
goto LabelError;
}
TimeOut++;
} while (!KcsStatus.Status.Obf);
BmcStatus = IoRead8 (KcsPort);
KcsData = KCS_READ;
IoWrite8 (KcsPort, KcsData);
TimeOut = 0;
do {
MicroSecondDelay(KCS_DELAY_UNIT);
KcsStatus.RawData = IoRead8 (KcsPort + 1);
if (KcsStatus.RawData == 0xFF || (TimeOut >= KcsTimeoutPeriod)) {
Status = EFI_DEVICE_ERROR;
goto LabelError;
}
TimeOut++;
} while (KcsStatus.Status.Ibf);
if (KcsStatus.Status.State == KcsIdleState) {
TimeOut = 0;
do {
MicroSecondDelay(KCS_DELAY_UNIT);
KcsStatus.RawData = IoRead8 (KcsPort + 1);
if (KcsStatus.RawData == 0xFF || (TimeOut >= KcsTimeoutPeriod)) {
Status = EFI_DEVICE_ERROR;
goto LabelError;
}
TimeOut++;
} while (!KcsStatus.Status.Obf);
KcsData = IoRead8 (KcsPort);
break;
} else {
RetryCount++;
continue;
}
} else {
RetryCount++;
continue;
}
}
if (RetryCount >= KCS_ABORT_RETRY_COUNT) {
Status = EFI_DEVICE_ERROR;
goto LabelError;
}
return EFI_SUCCESS;
LabelError:
return Status;
}
EFI_STATUS
KcsCheckStatus (
UINT64 KcsTimeoutPeriod,
UINT16 KcsPort,
KCS_STATE KcsState,
BOOLEAN *Idle
)
/*++
Routine Description:
Ckeck KCS status
Arguments:
KcsPort - The base port of KCS
KcsState - The state of KCS to be checked
Idle - If the KCS is idle
Returns:
EFI_SUCCESS - Checked the KCS status successfully
--*/
{
EFI_STATUS Status = 0;
EFI_KCS_STATUS KcsStatus = { 0 };
UINT8 KcsData = 0;
UINT64 TimeOut = 0;
if(Idle == NULL ){
return EFI_INVALID_PARAMETER;
}
*Idle = FALSE;
do {
MicroSecondDelay(KCS_DELAY_UNIT);
KcsStatus.RawData = IoRead8 (KcsPort + 1);
if (KcsStatus.RawData == 0xFF || (TimeOut >= KcsTimeoutPeriod)) {
Status = EFI_DEVICE_ERROR;
goto LabelError;
}
TimeOut++;
} while (KcsStatus.Status.Ibf);
if (KcsState == KcsWriteState) {
KcsData = IoRead8 (KcsPort);
}
if (KcsStatus.Status.State != KcsState) {
if ((KcsStatus.Status.State == KcsIdleState) && (KcsState == KcsReadState)) {
*Idle = TRUE;
} else {
Status = KcsErrorExit (KcsTimeoutPeriod, KcsPort);
goto LabelError;
}
}
if (KcsState == KcsReadState) {
TimeOut = 0;
do {
MicroSecondDelay(KCS_DELAY_UNIT);
KcsStatus.RawData = IoRead8 (KcsPort + 1);
if (KcsStatus.RawData == 0xFF || (TimeOut >= KcsTimeoutPeriod)) {
Status = EFI_DEVICE_ERROR;
goto LabelError;
}
TimeOut++;
} while (!KcsStatus.Status.Obf);
}
if (KcsState == KcsWriteState || Idle) {
KcsData = IoRead8 (KcsPort);
}
return EFI_SUCCESS;
LabelError:
return Status;
}
EFI_STATUS
SendDataToBmc (
UINT64 KcsTimeoutPeriod,
UINT16 KcsPort,
UINT8 *Data,
UINT8 DataSize
)
/*++
Routine Description:
Send data to BMC
Arguments:
Data - The data pointer to be sent
DataSize - The data size
Returns:
EFI_SUCCESS - Send out the data successfully
--*/
{
EFI_KCS_STATUS KcsStatus;
UINT8 KcsData;
UINT16 KcsIoBase;
EFI_STATUS Status;
UINT8 i;
BOOLEAN Idle;
UINT64 TimeOut = 0;
DEBUG ((DEBUG_INFO, "SendDataToBmc (%ld, 0x%x) - ", KcsTimeoutPeriod, KcsPort));
for (i = 0; i < DataSize; i++) {
DEBUG ((DEBUG_INFO, "%02x ", Data[i]));
}
DEBUG ((DEBUG_INFO, "\n"));
KcsIoBase = KcsPort;
do {
MicroSecondDelay(KCS_DELAY_UNIT);
KcsStatus.RawData = IoRead8 (KcsIoBase + 1);
if ((KcsStatus.RawData == 0xFF) || (TimeOut >= KcsTimeoutPeriod))
{
if ((Status = KcsErrorExit (KcsTimeoutPeriod, KcsIoBase)) != EFI_SUCCESS)
{
DEBUG ((DEBUG_INFO, "KcsErrorExit - %r\n", Status));
return Status;
}
}
TimeOut++;
} while (KcsStatus.Status.Ibf);
KcsData = KCS_WRITE_START;
IoWrite8 ((KcsIoBase + 1), KcsData);
if ((Status = KcsCheckStatus (KcsTimeoutPeriod, KcsIoBase, KcsWriteState, &Idle)) != EFI_SUCCESS) {
DEBUG ((DEBUG_INFO, "KcsCheckStatus 1 - %r\n", Status));
return Status;
}
for (i = 0; i < DataSize; i++) {
if (i == (DataSize - 1)) {
if ((Status = KcsCheckStatus (KcsTimeoutPeriod, KcsIoBase, KcsWriteState, &Idle)) != EFI_SUCCESS) {
DEBUG ((DEBUG_INFO, "KcsCheckStatus 2 - %r\n", Status));
return Status;
}
KcsData = KCS_WRITE_END;
IoWrite8 ((KcsIoBase + 1), KcsData);
}
Status = KcsCheckStatus (KcsTimeoutPeriod, KcsIoBase, KcsWriteState, &Idle);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_INFO, "KcsCheckStatus 3 - %r\n", Status));
return Status;
}
IoWrite8 (KcsIoBase, Data[i]);
}
return EFI_SUCCESS;
}
EFI_STATUS
ReceiveBmcData (
UINT64 KcsTimeoutPeriod,
UINT16 KcsPort,
UINT8 *Data,
UINT8 *DataSize
)
/*++
Routine Description:
Routine Description:
Receive data from BMC
Arguments:
Data - The buffer pointer
DataSize - The buffer size
Returns:
EFI_SUCCESS - Received data successfully
--*/
{
UINT8 KcsData;
UINT16 KcsIoBase;
EFI_STATUS Status;
BOOLEAN Idle;
UINT8 Count;
Count = 0;
KcsIoBase = KcsPort;
DEBUG ((DEBUG_INFO, "ReceiveBmcData (%ld, 0x%x)...\n", KcsTimeoutPeriod, KcsPort));
while (TRUE) {
if ((Status = KcsCheckStatus (KcsTimeoutPeriod, KcsIoBase, KcsReadState, &Idle)) != EFI_SUCCESS) {
DEBUG ((DEBUG_INFO, "KcsCheckStatus - %r\n", Status));
return Status;
}
if (Idle) {
DEBUG ((DEBUG_INFO, "DataSize - 0x%x\n", Count));
*DataSize = Count;
break;
}
if (Count > *DataSize) {
DEBUG ((DEBUG_INFO, "ERROR: Count(0x%x) > *DataSize(0x%x)\n", Count, *DataSize));
return EFI_DEVICE_ERROR;
}
Data[Count] = IoRead8 (KcsIoBase);
Count++;
KcsData = KCS_READ;
IoWrite8 (KcsIoBase, KcsData);
}
DEBUG ((DEBUG_INFO, "ReceiveBmcData (%ld, 0x%x) - ", KcsTimeoutPeriod, KcsPort));
for (Count = 0; Count < *DataSize; Count++) {
DEBUG ((DEBUG_INFO, "%02x ", Data[Count]));
}
DEBUG ((DEBUG_INFO, "\n"));
return EFI_SUCCESS;
}
EFI_STATUS
ReceiveBmcDataFromPort (
UINT64 KcsTimeoutPeriod,
UINT16 KcsPort,
UINT8 *Data,
UINT8 *DataSize
)
/*++
Routine Description:
Receive data from BMC
Arguments:
Data - The buffer pointer to receive data
DataSize - The buffer size
Returns:
EFI_SUCCESS - Received the data successfully
--*/
{
EFI_STATUS Status;
UINT16 KcsIoBase;
UINT8 i;
UINT8 MyDataSize;
MyDataSize = *DataSize;
KcsIoBase = KcsPort;
for (i = 0; i < KCS_ABORT_RETRY_COUNT; i++) {
Status = ReceiveBmcData (KcsTimeoutPeriod, KcsIoBase, Data, DataSize);
if (EFI_ERROR (Status)) {
if ((Status = KcsErrorExit (KcsTimeoutPeriod, KcsIoBase)) != EFI_SUCCESS) {
return Status;
}
*DataSize = MyDataSize;
} else {
return Status;
}
}
return EFI_DEVICE_ERROR;
}
EFI_STATUS
SendDataToBmcPort (
UINT64 KcsTimeoutPeriod,
UINT16 KcsPort,
UINT8 *Data,
UINT8 DataSize
)
/*++
Routine Description:
Send data to BMC
Arguments:
Data - The data pointer to be sent
DataSize - The data size
Returns:
EFI_SUCCESS - Send out the data successfully
--*/
{
EFI_STATUS Status;
UINT16 KcsIoBase;
UINT8 i;
KcsIoBase = KcsPort;
for (i = 0; i < KCS_ABORT_RETRY_COUNT; i++) {
Status = SendDataToBmc (KcsTimeoutPeriod, KcsIoBase, Data, DataSize);
if (EFI_ERROR (Status)) {
if ((Status = KcsErrorExit (KcsTimeoutPeriod, KcsIoBase)) != EFI_SUCCESS) {
return Status;
}
} else {
return Status;
}
}
return EFI_DEVICE_ERROR;
}
|
