| /** @file | |
| The implementation of EFI_EXT_SCSI_PASS_THRU_PROTOCOL. | |
| Copyright (c) 2004 - 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 | |
| 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 "IScsiImpl.h" | |
| EFI_EXT_SCSI_PASS_THRU_PROTOCOL gIScsiExtScsiPassThruProtocolTemplate = { | |
| NULL, | |
| IScsiExtScsiPassThruFunction, | |
| IScsiExtScsiPassThruGetNextTargetLun, | |
| IScsiExtScsiPassThruBuildDevicePath, | |
| IScsiExtScsiPassThruGetTargetLun, | |
| IScsiExtScsiPassThruResetChannel, | |
| IScsiExtScsiPassThruResetTargetLun, | |
| IScsiExtScsiPassThruGetNextTarget | |
| }; | |
| /** | |
| 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 nonblocking I/O functionality is optional. | |
| @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, out] Packet A pointer to the SCSI Request Packet to send to the | |
| SCSI device specified by Target and Lun. | |
| @param[in] Event If nonblocking I/O is not supported then Event is ignored, | |
| and blocking I/O is performed. If Event is NULL, then | |
| blocking I/O is performed. If Event is not NULL and non | |
| blocking I/O is supported, then nonblocking I/O is performed, | |
| and Event will be signaled when the SCSI Request Packet | |
| completes. | |
| @retval EFI_SUCCESS The SCSI Request Packet was sent by the host. For | |
| bi-directional commands, InTransferLength bytes | |
| were transferred from InDataBuffer. | |
| For write and bi-directional commands, OutTransferLength | |
| bytes were transferred by OutDataBuffer. | |
| @retval EFI_BAD_BUFFER_SIZE The SCSI Request Packet was not executed. | |
| The number of bytes that could be transferred is | |
| returned in InTransferLength. For write and | |
| bi-directional commands, OutTransferLength bytes | |
| were transferred by OutDataBuffer. | |
| @retval EFI_NOT_READY The SCSI Request Packet could not be sent because | |
| there are too many SCSI Request Packets already | |
| queued. The caller may retry later. | |
| @retval EFI_DEVICE_ERROR A device error occurred while attempting to send | |
| the SCSI Request Packet. | |
| @retval EFI_INVALID_PARAMETER Target, Lun, or the contents of ScsiRequestPacket, | |
| are invalid. | |
| @retval EFI_UNSUPPORTED The command described by the SCSI Request Packet | |
| is not supported by the host adapter. | |
| This includes the case of Bi-directional SCSI | |
| commands not supported by the implementation. | |
| The SCSI Request Packet was not sent, | |
| so no additional status information is available. | |
| @retval EFI_TIMEOUT A timeout occurred while waiting for the SCSI | |
| Request Packet to execute. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| IScsiExtScsiPassThruFunction ( | |
| IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This, | |
| IN UINT8 *Target, | |
| IN UINT64 Lun, | |
| IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet, | |
| IN EFI_EVENT Event OPTIONAL | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| ISCSI_DRIVER_DATA *Private; | |
| if (Target[0] != 0) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| if ((Packet == NULL) || (Packet->Cdb == NULL)) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| Status = IScsiExecuteScsiCommand (This, Target, Lun, Packet); | |
| if ((Status != EFI_SUCCESS) && (Status != EFI_NOT_READY)) { | |
| // | |
| // Try to reinstate the session and re-execute the Scsi command. | |
| // | |
| Private = ISCSI_DRIVER_DATA_FROM_EXT_SCSI_PASS_THRU (This); | |
| if (EFI_ERROR (IScsiSessionReinstatement (Private->Session))) { | |
| return EFI_DEVICE_ERROR; | |
| } | |
| Status = IScsiExecuteScsiCommand (This, Target, Lun, Packet); | |
| } | |
| return Status; | |
| } | |
| /** | |
| Used to retrieve the list of legal Target IDs and LUNs for SCSI devices on | |
| a SCSI channel. These can either be the list SCSI devices that are actually | |
| present on the SCSI channel, or the list of legal Target Ids and LUNs for the | |
| SCSI channel. Regardless, the caller of this function must probe the Target ID | |
| and LUN returned to see if a SCSI device is actually present at that location | |
| on the SCSI channel. | |
| @param[in] This The EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance. | |
| @param[in, out] Target On input, a pointer to the Target ID of a SCSI | |
| device present on the SCSI channel. On output, a | |
| pointer to the Target ID of the next SCSI device | |
| present on a SCSI channel. An input value of | |
| 0xFFFFFFFF retrieves the Target ID of the first | |
| SCSI device present on a SCSI channel. | |
| @param[in, out] Lun On input, a pointer to the LUN of a SCSI device | |
| present on the SCSI channel. On output, a pointer | |
| to the LUN of the next SCSI device present on a | |
| SCSI channel. | |
| @retval EFI_SUCCESS The Target ID and Lun of the next SCSI device on | |
| the SCSI channel was returned in Target and Lun. | |
| @retval EFI_NOT_FOUND There are no more SCSI devices on this SCSI | |
| channel. | |
| @retval EFI_INVALID_PARAMETER Target is not 0xFFFFFFFF,and Target and Lun were | |
| not returned on a previous call to | |
| GetNextDevice(). | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| IScsiExtScsiPassThruGetNextTargetLun ( | |
| IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This, | |
| IN OUT UINT8 **Target, | |
| IN OUT UINT64 *Lun | |
| ) | |
| { | |
| ISCSI_DRIVER_DATA *Private; | |
| ISCSI_SESSION_CONFIG_NVDATA *ConfigNvData; | |
| UINT8 TargetId[TARGET_MAX_BYTES]; | |
| Private = ISCSI_DRIVER_DATA_FROM_EXT_SCSI_PASS_THRU (This); | |
| ConfigNvData = &Private->Session->ConfigData->SessionConfigData; | |
| if ((*Target)[0] == 0 && (CompareMem (Lun, ConfigNvData->BootLun, sizeof (UINT64)) == 0)) { | |
| // | |
| // Only one <Target, Lun> pair per iSCSI Driver instance. | |
| // | |
| return EFI_NOT_FOUND; | |
| } | |
| SetMem (TargetId, TARGET_MAX_BYTES, 0xFF); | |
| if (CompareMem (*Target, TargetId, TARGET_MAX_BYTES) == 0) { | |
| (*Target)[0] = 0; | |
| CopyMem (Lun, ConfigNvData->BootLun, sizeof (UINT64)); | |
| return EFI_SUCCESS; | |
| } | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| /** | |
| Allocate and build a device path node for a SCSI device on a SCSI channel. | |
| @param[in] This Protocol instance pointer. | |
| @param[in] Target The Target ID of the SCSI device for which a | |
| device path node is to be allocated and built. | |
| @param[in] Lun The LUN of the SCSI device for which a device | |
| path node is to be allocated and built. | |
| @param[in, out] DevicePath A pointer to a single device path node that | |
| describes the SCSI device specified by Target and | |
| Lun. This function is responsible for allocating | |
| the buffer DevicePath with the boot service | |
| AllocatePool(). It is the caller's | |
| responsibility to free DevicePath when the caller | |
| is finished with DevicePath. | |
| @retval EFI_SUCCESS The device path node that describes the SCSI | |
| device specified by Target and Lun was allocated | |
| and returned in DevicePath. | |
| @retval EFI_NOT_FOUND The SCSI devices specified by Target and Lun does | |
| not exist on the SCSI channel. | |
| @retval EFI_INVALID_PARAMETER DevicePath is NULL. | |
| @retval EFI_OUT_OF_RESOURCES There are not enough resources to allocate | |
| DevicePath. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| IScsiExtScsiPassThruBuildDevicePath ( | |
| IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This, | |
| IN UINT8 *Target, | |
| IN UINT64 Lun, | |
| IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath | |
| ) | |
| { | |
| ISCSI_DRIVER_DATA *Private; | |
| ISCSI_SESSION *Session; | |
| ISCSI_SESSION_CONFIG_NVDATA *ConfigNvData; | |
| ISCSI_CHAP_AUTH_CONFIG_NVDATA *AuthConfig; | |
| EFI_DEV_PATH *Node; | |
| UINTN DevPathNodeLen; | |
| if ((DevicePath == NULL)) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| if (Target[0] != 0) { | |
| return EFI_NOT_FOUND; | |
| } | |
| Private = ISCSI_DRIVER_DATA_FROM_EXT_SCSI_PASS_THRU (This); | |
| Session = Private->Session; | |
| ConfigNvData = &Session->ConfigData->SessionConfigData; | |
| AuthConfig = Session->AuthData.CHAP.AuthConfig; | |
| if (CompareMem (&Lun, ConfigNvData->BootLun, sizeof (UINT64)) != 0) { | |
| return EFI_NOT_FOUND; | |
| } | |
| DevPathNodeLen = sizeof (ISCSI_DEVICE_PATH) + AsciiStrLen (ConfigNvData->TargetName) + 1; | |
| Node = AllocateZeroPool (DevPathNodeLen); | |
| if (Node == NULL) { | |
| return EFI_OUT_OF_RESOURCES; | |
| } | |
| Node->DevPath.Type = MESSAGING_DEVICE_PATH; | |
| Node->DevPath.SubType = MSG_ISCSI_DP; | |
| SetDevicePathNodeLength (&Node->DevPath, DevPathNodeLen); | |
| // | |
| // 0 for TCP, others are reserved. | |
| // | |
| Node->Iscsi.NetworkProtocol = 0; | |
| Node->Iscsi.LoginOption = 0; | |
| switch (Session->AuthType) { | |
| case ISCSI_AUTH_TYPE_NONE: | |
| Node->Iscsi.LoginOption |= 0x0800; | |
| break; | |
| case ISCSI_AUTH_TYPE_CHAP: | |
| // | |
| // Bit12: 0=CHAP_BI, 1=CHAP_UNI | |
| // | |
| if (AuthConfig->CHAPType == ISCSI_CHAP_UNI) { | |
| Node->Iscsi.LoginOption |= 0x1000; | |
| } | |
| break; | |
| default: | |
| break; | |
| } | |
| CopyMem (&Node->Iscsi.Lun, ConfigNvData->BootLun, sizeof (UINT64)); | |
| Node->Iscsi.TargetPortalGroupTag = Session->TargetPortalGroupTag; | |
| AsciiStrCpy ((CHAR8 *) Node + sizeof (ISCSI_DEVICE_PATH), ConfigNvData->TargetName); | |
| *DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) Node; | |
| return EFI_SUCCESS; | |
| } | |
| /** | |
| Translate a device path node to a Target ID and LUN. | |
| @param[in] This Protocol instance pointer. | |
| @param[in] DevicePath A pointer to the device path node that describes | |
| a SCSI device on the SCSI channel. | |
| @param[out] Target A pointer to the Target ID of a SCSI device on | |
| the SCSI channel. | |
| @param[out] Lun A pointer to the LUN of a SCSI device on the SCSI | |
| channel. | |
| @retval EFI_SUCCESS DevicePath was successfully translated to a | |
| Target ID and LUN, and they were returned in | |
| Target and Lun. | |
| @retval EFI_INVALID_PARAMETER DevicePath/Target/Lun is NULL. | |
| @retval EFI_UNSUPPORTED This driver does not support the device path node | |
| type in DevicePath. | |
| @retval EFI_NOT_FOUND A valid translation does not exist from DevicePath | |
| to a TargetID and LUN. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| IScsiExtScsiPassThruGetTargetLun ( | |
| IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This, | |
| IN EFI_DEVICE_PATH_PROTOCOL *DevicePath, | |
| OUT UINT8 **Target, | |
| OUT UINT64 *Lun | |
| ) | |
| { | |
| ISCSI_DRIVER_DATA *Private; | |
| ISCSI_SESSION_CONFIG_NVDATA *ConfigNvData; | |
| if ((DevicePath == NULL) || (Target == NULL) || (Lun == NULL)) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| if ((DevicePath->Type != MESSAGING_DEVICE_PATH) || | |
| (DevicePath->SubType != MSG_ISCSI_DP) || | |
| (DevicePathNodeLength (DevicePath) <= sizeof (ISCSI_DEVICE_PATH)) | |
| ) { | |
| return EFI_UNSUPPORTED; | |
| } | |
| Private = ISCSI_DRIVER_DATA_FROM_EXT_SCSI_PASS_THRU (This); | |
| ConfigNvData = &Private->Session->ConfigData->SessionConfigData; | |
| SetMem (*Target, TARGET_MAX_BYTES, 0xFF); | |
| (*Target)[0] = 0; | |
| if (AsciiStrCmp (ConfigNvData->TargetName, (CHAR8 *) DevicePath + sizeof (ISCSI_DEVICE_PATH)) != 0) { | |
| return EFI_UNSUPPORTED; | |
| } | |
| CopyMem (Lun, ConfigNvData->BootLun, sizeof (UINT64)); | |
| return EFI_SUCCESS; | |
| } | |
| /** | |
| Resets a SCSI channel. This operation resets all the SCSI devices connected to | |
| the SCSI channel. | |
| @param[in] This Protocol instance pointer. | |
| @retval EFI_UNSUPPORTED It is not supported. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| IScsiExtScsiPassThruResetChannel ( | |
| IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This | |
| ) | |
| { | |
| return EFI_UNSUPPORTED; | |
| } | |
| /** | |
| Resets a SCSI device that is connected to a SCSI channel. | |
| @param[in] This Protocol instance pointer. | |
| @param[in] Target The Target ID of the SCSI device to reset. | |
| @param[in] Lun The LUN of the SCSI device to reset. | |
| @retval EFI_UNSUPPORTED It is not supported. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| IScsiExtScsiPassThruResetTargetLun ( | |
| IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This, | |
| IN UINT8 *Target, | |
| IN UINT64 Lun | |
| ) | |
| { | |
| return EFI_UNSUPPORTED; | |
| } | |
| /** | |
| Retrieve the list of legal Target IDs for SCSI devices on a SCSI channel. | |
| @param[in] This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL | |
| instance. | |
| @param[in, out] Target (TARGET_MAX_BYTES) of a SCSI device present on | |
| the SCSI channel. On output, a pointer to the | |
| Target ID (an array of TARGET_MAX_BYTES) of the | |
| next SCSI device present on a SCSI channel. | |
| An input value of 0xF(all bytes in the array are 0xF) | |
| in the Target array retrieves the Target ID of the | |
| first SCSI device present on a SCSI channel. | |
| @retval EFI_SUCCESS The Target ID of the next SCSI device on the SCSI | |
| channel was returned in Target. | |
| @retval EFI_INVALID_PARAMETER Target or Lun is NULL. | |
| @retval EFI_TIMEOUT Target array is not all 0xF, and Target was not | |
| returned on a previous call to GetNextTarget(). | |
| @retval EFI_NOT_FOUND There are no more SCSI devices on this SCSI channel. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| IScsiExtScsiPassThruGetNextTarget ( | |
| IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This, | |
| IN OUT UINT8 **Target | |
| ) | |
| { | |
| UINT8 TargetId[TARGET_MAX_BYTES]; | |
| SetMem (TargetId, TARGET_MAX_BYTES, 0xFF); | |
| if (CompareMem (*Target, TargetId, TARGET_MAX_BYTES) == 0) { | |
| (*Target)[0] = 0; | |
| return EFI_SUCCESS; | |
| } else if ((*Target)[0] == 0) { | |
| return EFI_NOT_FOUND; | |
| } else { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| } | |