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/** @file
Diagnostics Protocol implementation for the MMC DXE driver
Copyright (c) 2011, ARM Limited. All rights reserved.
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which 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 <Uefi.h>
#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include "Mmc.h"
#define DIAGNOSTIC_LOGBUFFER_MAXCHAR 1024
CHAR16* mLogBuffer = NULL;
UINTN mLogRemainChar = 0;
CHAR16*
DiagnosticInitLog (
UINTN MaxBufferChar
)
{
mLogRemainChar = MaxBufferChar;
mLogBuffer = AllocatePool ((UINTN)MaxBufferChar * sizeof(CHAR16));
return mLogBuffer;
}
UINTN
DiagnosticLog (
CONST CHAR16* Str
)
{
UINTN len = StrLen (Str);
if (len <= mLogRemainChar) {
mLogRemainChar -= len;
StrCpy (mLogBuffer, Str);
mLogBuffer += len;
return len;
} else {
return 0;
}
}
VOID
GenerateRandomBuffer (
VOID* Buffer,
UINTN BufferSize
)
{
UINT64 i;
UINT64* Buffer64 = (UINT64*)Buffer;
for (i = 0; i < (BufferSize >> 3); i++) {
*Buffer64 = i | (~i << 32);
Buffer64++;
}
}
BOOLEAN
CompareBuffer (
VOID *BufferA,
VOID *BufferB,
UINTN BufferSize
)
{
UINTN i;
UINT64* BufferA64 = (UINT64*)BufferA;
UINT64* BufferB64 = (UINT64*)BufferB;
for (i = 0; i < (BufferSize >> 3); i++) {
if (*BufferA64 != *BufferB64) {
DEBUG((EFI_D_ERROR, "CompareBuffer: Error at %i", i));
DEBUG((EFI_D_ERROR, "(0x%lX) != (0x%lX)\n", *BufferA64, *BufferB64));
return FALSE;
}
BufferA64++;
BufferB64++;
}
return TRUE;
}
EFI_STATUS
MmcReadWriteDataTest (
MMC_HOST_INSTANCE *MmcHostInstance,
EFI_LBA Lba,
UINTN BufferSize
)
{
VOID *BackBuffer;
VOID *WriteBuffer;
VOID *ReadBuffer;
EFI_STATUS Status;
// Check if a Media is Present
if (!MmcHostInstance->BlockIo.Media->MediaPresent) {
DiagnosticLog (L"ERROR: No Media Present\n");
return EFI_NO_MEDIA;
}
if (MmcHostInstance->State != MmcTransferState) {
DiagnosticLog (L"ERROR: Not ready for Transfer state\n");
return EFI_NOT_READY;
}
BackBuffer = AllocatePool (BufferSize);
WriteBuffer = AllocatePool (BufferSize);
ReadBuffer = AllocatePool (BufferSize);
// Read (and save) buffer at a specific location
Status = MmcReadBlocks (&(MmcHostInstance->BlockIo), MmcHostInstance->BlockIo.Media->MediaId,Lba,BufferSize,BackBuffer);
if (Status != EFI_SUCCESS) {
DiagnosticLog (L"ERROR: Fail to Read Block (1)\n");
return Status;
}
// Write buffer at the same location
GenerateRandomBuffer (WriteBuffer,BufferSize);
Status = MmcWriteBlocks (&(MmcHostInstance->BlockIo), MmcHostInstance->BlockIo.Media->MediaId,Lba,BufferSize,WriteBuffer);
if (Status != EFI_SUCCESS) {
DiagnosticLog (L"ERROR: Fail to Write Block (1)\n");
return Status;
}
// Read the buffer at the same location
Status = MmcReadBlocks (&(MmcHostInstance->BlockIo), MmcHostInstance->BlockIo.Media->MediaId,Lba,BufferSize,ReadBuffer);
if (Status != EFI_SUCCESS) {
DiagnosticLog (L"ERROR: Fail to Read Block (2)\n");
return Status;
}
// Check that is conform
if (!CompareBuffer (ReadBuffer,WriteBuffer,BufferSize)) {
DiagnosticLog (L"ERROR: Fail to Read/Write Block (1)\n");
return EFI_INVALID_PARAMETER;
}
// Restore content at the original location
Status = MmcWriteBlocks (&(MmcHostInstance->BlockIo), MmcHostInstance->BlockIo.Media->MediaId,Lba,BufferSize,BackBuffer);
if (Status != EFI_SUCCESS) {
DiagnosticLog (L"ERROR: Fail to Write Block (2)\n");
return Status;
}
// Read the restored content
Status = MmcReadBlocks (&(MmcHostInstance->BlockIo), MmcHostInstance->BlockIo.Media->MediaId,Lba,BufferSize,ReadBuffer);
if (Status != EFI_SUCCESS) {
DiagnosticLog (L"ERROR: Fail to Read Block (3)\n");
return Status;
}
// Check the content is correct
if (!CompareBuffer (ReadBuffer,BackBuffer,BufferSize)) {
DiagnosticLog (L"ERROR: Fail to Read/Write Block (2)\n");
return EFI_INVALID_PARAMETER;
}
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
MmcDriverDiagnosticsRunDiagnostics (
IN EFI_DRIVER_DIAGNOSTICS_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_HANDLE ChildHandle OPTIONAL,
IN EFI_DRIVER_DIAGNOSTIC_TYPE DiagnosticType,
IN CHAR8 *Language,
OUT EFI_GUID **ErrorType,
OUT UINTN *BufferSize,
OUT CHAR16 **Buffer
)
{
LIST_ENTRY *CurrentLink;
MMC_HOST_INSTANCE *MmcHostInstance;
EFI_STATUS Status;
if ((Language == NULL) ||
(ErrorType == NULL) ||
(Buffer == NULL) ||
(ControllerHandle == NULL) ||
(BufferSize == NULL)) {
return EFI_INVALID_PARAMETER;
}
Status = EFI_SUCCESS;
*ErrorType = NULL;
*BufferSize = DIAGNOSTIC_LOGBUFFER_MAXCHAR;
*Buffer = DiagnosticInitLog (DIAGNOSTIC_LOGBUFFER_MAXCHAR);
DiagnosticLog (L"MMC Driver Diagnostics\n");
// For each MMC instance
CurrentLink = mMmcHostPool.ForwardLink;
while (CurrentLink != NULL && CurrentLink != &mMmcHostPool && (Status == EFI_SUCCESS)) {
MmcHostInstance = MMC_HOST_INSTANCE_FROM_LINK(CurrentLink);
ASSERT(MmcHostInstance != NULL);
// LBA=1 Size=BlockSize
DiagnosticLog (L"MMC Driver Diagnostics - Test: First Block\n");
Status = MmcReadWriteDataTest (MmcHostInstance, 1, MmcHostInstance->BlockIo.Media->BlockSize);
// LBA=2 Size=BlockSize
DiagnosticLog (L"MMC Driver Diagnostics - Test: Second Block\n");
Status = MmcReadWriteDataTest (MmcHostInstance, 2, MmcHostInstance->BlockIo.Media->BlockSize);
// LBA=10 Size=BlockSize
DiagnosticLog (L"MMC Driver Diagnostics - Test: Any Block\n");
Status = MmcReadWriteDataTest (MmcHostInstance, MmcHostInstance->BlockIo.Media->LastBlock >> 1, MmcHostInstance->BlockIo.Media->BlockSize);
// LBA=LastBlock Size=BlockSize
DiagnosticLog (L"MMC Driver Diagnostics - Test: Last Block\n");
Status = MmcReadWriteDataTest (MmcHostInstance, MmcHostInstance->BlockIo.Media->LastBlock, MmcHostInstance->BlockIo.Media->BlockSize);
// LBA=1 Size=2*BlockSize
DiagnosticLog (L"MMC Driver Diagnostics - Test: First Block / 2 BlockSSize\n");
Status = MmcReadWriteDataTest (MmcHostInstance, 1, 2*MmcHostInstance->BlockIo.Media->BlockSize);
CurrentLink = CurrentLink->ForwardLink;
}
return Status;
}
//
// EFI Driver Diagnostics 2 Protocol
//
GLOBAL_REMOVE_IF_UNREFERENCED EFI_DRIVER_DIAGNOSTICS2_PROTOCOL gMmcDriverDiagnostics2 = {
(EFI_DRIVER_DIAGNOSTICS2_RUN_DIAGNOSTICS) MmcDriverDiagnosticsRunDiagnostics,
"en"
};
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