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MdeModulePkg/ScsiDisk: Using back-off algorithm to dynamically adjust transfer length in a single SCSI/ATAPI transfer to reach best device compatibility.

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Besides this, the patch also fixed:
1) Wrong return value in SenseDataLength field of packet field of EFI_EXT_SCSI_PASS_THRU protocol, it should reflect real sense data length we got.
2) Wrong logic in ScsiDiskRequestSenseKeys that the logic makes SenseData pointer unaligned compared with BlockIo.Media.IoAlign field.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Tian, Feng <feng.tian@intel.com>
Reviewed-by: Zeng, Star <star.zeng@intel.com>
Reviewed-by: Fu, Siyuan <siyuan.fu@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15491 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Tian, Feng
2014-04-30 03:36:14 +00:00
committed by erictian
parent 56dea5e177
commit 73a9e82214
4 changed files with 284 additions and 214 deletions
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108
MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AtaAtapiPassThru.c
View File

@@ -2,7 +2,7 @@
This file implements ATA_PASSTHRU_PROCTOCOL and EXT_SCSI_PASSTHRU_PROTOCOL interfaces
for managed ATA controllers.
Copyright (c) 2010 - 2013, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2010 - 2014, 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
which accompanies this distribution. The full text of the license may be found at
@@ -1831,6 +1831,57 @@ AtaPassThruResetDevice (
return EFI_SUCCESS;
}
/**
Sumbit ATAPI request sense command.
@param[in] This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.
@param[in] Target The Target is an array of size TARGET_MAX_BYTES and it represents
the id of the SCSI device to send the SCSI Request Packet. Each
transport driver may choose to utilize a subset of this size to suit the needs
of transport target representation. For example, a Fibre Channel driver
may use only 8 bytes (WWN) to represent an FC target.
@param[in] Lun The LUN of the SCSI device to send the SCSI Request Packet.
@param[in] SenseData A pointer to store sense data.
@param[in] SenseDataLength The sense data length.
@param[in] Timeout The timeout value to execute this cmd, uses 100ns as a unit.
@retval EFI_SUCCESS Send out the ATAPI packet command successfully.
@retval EFI_DEVICE_ERROR The device failed to send data.
**/
EFI_STATUS
EFIAPI
AtaPacketRequestSense (
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
IN UINT8 *Target,
IN UINT64 Lun,
IN VOID *SenseData,
IN UINT8 SenseDataLength,
IN UINT64 Timeout
)
{
EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET Packet;
UINT8 Cdb[12];
EFI_STATUS Status;
ZeroMem (&Packet, sizeof (EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET));
ZeroMem (Cdb, 12);
Cdb[0] = ATA_CMD_REQUEST_SENSE;
Cdb[4] = SenseDataLength;
Packet.Timeout = Timeout;
Packet.Cdb = Cdb;
Packet.CdbLength = 12;
Packet.DataDirection = EFI_EXT_SCSI_DATA_DIRECTION_READ;
Packet.InDataBuffer = SenseData;
Packet.InTransferLength = SenseDataLength;
Status = ExtScsiPassThruPassThru (This, Target, Lun, &Packet, NULL);
return Status;
}
/**
Sends a SCSI Request Packet to a SCSI device that is attached to the SCSI channel. This function
supports both blocking I/O and nonblocking I/O. The blocking I/O functionality is required, and the
@@ -1889,8 +1940,13 @@ ExtScsiPassThruPassThru (
EFI_ATA_HC_WORK_MODE Mode;
LIST_ENTRY *Node;
EFI_ATA_DEVICE_INFO *DeviceInfo;
BOOLEAN SenseReq;
EFI_SCSI_SENSE_DATA *PtrSenseData;
UINTN SenseDataLen;
EFI_STATUS SenseStatus;
Instance = EXT_SCSI_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);
SenseDataLen = 0;
Instance = EXT_SCSI_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);
if ((Packet == NULL) || (Packet->Cdb == NULL)) {
return EFI_INVALID_PARAMETER;
@@ -1904,6 +1960,10 @@ ExtScsiPassThruPassThru (
return EFI_INVALID_PARAMETER;
}
if ((Packet->SenseDataLength != 0) && (Packet->SenseData == NULL)) {
return EFI_INVALID_PARAMETER;
}
if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->InDataBuffer, This->Mode->IoAlign)) {
return EFI_INVALID_PARAMETER;
}
@@ -1951,6 +2011,10 @@ ExtScsiPassThruPassThru (
//
if (*((UINT8*)Packet->Cdb) == ATA_CMD_IDENTIFY_DEVICE) {
CopyMem (Packet->InDataBuffer, DeviceInfo->IdentifyData, sizeof (EFI_IDENTIFY_DATA));
//
// For IDENTIFY DEVICE cmd, we don't need to get sense data.
//
Packet->SenseDataLength = 0;
return EFI_SUCCESS;
}
@@ -1976,6 +2040,46 @@ ExtScsiPassThruPassThru (
break;
}
//
// If the cmd doesn't get executed correctly, then check sense data.
//
if (EFI_ERROR (Status) && (Packet->SenseDataLength != 0) && (*((UINT8*)Packet->Cdb) != ATA_CMD_REQUEST_SENSE)) {
PtrSenseData = AllocateAlignedPages (EFI_SIZE_TO_PAGES (sizeof (EFI_SCSI_SENSE_DATA)), This->Mode->IoAlign);
if (PtrSenseData == NULL) {
return EFI_DEVICE_ERROR;
}
for (SenseReq = TRUE; SenseReq;) {
SenseStatus = AtaPacketRequestSense (
This,
Target,
Lun,
PtrSenseData,
sizeof (EFI_SCSI_SENSE_DATA),
Packet->Timeout
);
if (EFI_ERROR (SenseStatus)) {
break;
}
CopyMem ((UINT8*)Packet->SenseData + SenseDataLen, PtrSenseData, sizeof (EFI_SCSI_SENSE_DATA));
SenseDataLen += sizeof (EFI_SCSI_SENSE_DATA);
//
// no more sense key or number of sense keys exceeds predefined,
// skip the loop.
//
if ((PtrSenseData->Sense_Key == EFI_SCSI_SK_NO_SENSE) ||
(SenseDataLen + sizeof (EFI_SCSI_SENSE_DATA) > Packet->SenseDataLength)) {
SenseReq = FALSE;
}
}
FreeAlignedPages (PtrSenseData, EFI_SIZE_TO_PAGES (sizeof (EFI_SCSI_SENSE_DATA)));
}
//
// Update the SenseDataLength field to the data length received.
//
Packet->SenseDataLength = (UINT8)SenseDataLen;
return Status;
}