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/** @file
Diagnostics Protocol implementation for the MMC DXE driver
Copyright (c) 2011-2020, ARM Limited. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Uefi.h>
#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/BaseLib.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) {
StrCpyS (mLogBuffer, mLogRemainChar, Str);
mLogRemainChar -= len;
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 | LShiftU64 (~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 ((DEBUG_ERROR, "CompareBuffer: Error at %i", i));
DEBUG ((DEBUG_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;
}
// Check Language is supported (i.e. is "en-*" - only English is supported)
if (AsciiStrnCmp (Language, "en", 2) != 0) {
return EFI_UNSUPPORTED;
}
Status = EFI_SUCCESS;
*ErrorType = NULL;
*BufferSize = DIAGNOSTIC_LOGBUFFER_MAXCHAR;
*Buffer = DiagnosticInitLog (DIAGNOSTIC_LOGBUFFER_MAXCHAR);
DiagnosticLog (L"MMC Driver Diagnostics\n");
// Find the MMC Host instance on which we have been asked to run diagnostics
MmcHostInstance = NULL;
CurrentLink = mMmcHostPool.ForwardLink;
while (CurrentLink != NULL && CurrentLink != &mMmcHostPool && (Status == EFI_SUCCESS)) {
MmcHostInstance = MMC_HOST_INSTANCE_FROM_LINK(CurrentLink);
ASSERT(MmcHostInstance != NULL);
if (MmcHostInstance->MmcHandle == ControllerHandle) {
break;
}
CurrentLink = CurrentLink->ForwardLink;
}
// If we didn't find the controller, return EFI_UNSUPPORTED
if ((MmcHostInstance == NULL)
|| (MmcHostInstance->MmcHandle != ControllerHandle)) {
return EFI_UNSUPPORTED;
}
// 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,
RShiftU64 (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);
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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