Fix a bug about the iSCSI DHCP dependency issue.

[mirror_edk2.git] / NetworkPkg / IScsiDxe / IScsiExtScsiPassThru.c

/** @file\r
  The implementation of EFI_EXT_SCSI_PASS_THRU_PROTOCOL.\r
\r
Copyright (c) 2004 - 2011, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution.  The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php\r
\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#include "IScsiImpl.h"\r
\r
EFI_EXT_SCSI_PASS_THRU_PROTOCOL gIScsiExtScsiPassThruProtocolTemplate = {\r
  NULL,\r
  IScsiExtScsiPassThruFunction,\r
  IScsiExtScsiPassThruGetNextTargetLun,\r
  IScsiExtScsiPassThruBuildDevicePath,\r
  IScsiExtScsiPassThruGetTargetLun,\r
  IScsiExtScsiPassThruResetChannel,\r
  IScsiExtScsiPassThruResetTargetLun,\r
  IScsiExtScsiPassThruGetNextTarget\r
};\r
\r
\r
/**\r
  Sends a SCSI Request Packet to a SCSI device that is attached to the SCSI channel.\r
  This function supports both blocking I/O and nonblocking I/O. The blocking I/O\r
  functionality is required, and the nonblocking I/O functionality is optional.  \r
\r
  @param[in]       This    A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.\r
  @param[in]       Target  The Target is an array of size TARGET_MAX_BYTES and it\r
                           represents the id of the SCSI device to send the SCSI\r
                           Request Packet. Each transport driver may choose to\r
                           utilize a subset of this size to suit the needs\r
                           of transport target representation. For example, a \r
                           Fibre Channel driver may use only 8 bytes (WWN)\r
                           to represent an FC target.\r
  @param[in]       Lun     The LUN of the SCSI device to send the SCSI Request Packet.\r
  @param[in, out]  Packet  A pointer to the SCSI Request Packet to send to the\r
                           SCSI device specified by Target and Lun.                  \r
  @param[in]       Event   If nonblocking I/O is not supported then Event is ignored,\r
                           and blocking I/O is performed. If Event is NULL, then\r
                           blocking I/O is performed. If Event is not NULL and non\r
                           blocking I/O is supported, then nonblocking I/O is performed,\r
                           and Event will be signaled when the SCSI Request Packet\r
                           completes.\r
\r
  @retval EFI_SUCCESS           The SCSI Request Packet was sent by the host. For\r
                                bi-directional commands, InTransferLength bytes \r
                                were transferred from InDataBuffer.\r
                                For write and bi-directional commands, OutTransferLength\r
                                bytes were transferred by OutDataBuffer.\r
  @retval EFI_BAD_BUFFER_SIZE   The SCSI Request Packet was not executed.\r
                                The number of bytes that could be transferred is\r
                                returned in InTransferLength. For write and\r
                                bi-directional commands, OutTransferLength bytes\r
                                were transferred by OutDataBuffer.\r
  @retval EFI_NOT_READY         The SCSI Request Packet could not be sent because\r
                                there are too many SCSI Request Packets already\r
                                queued. The caller may retry later.\r
  @retval EFI_DEVICE_ERROR      A device error occurred while attempting to send\r
                                the SCSI Request Packet.                                \r
  @retval EFI_INVALID_PARAMETER Target, Lun, or the contents of ScsiRequestPacket,\r
                                are invalid.\r
  @retval EFI_UNSUPPORTED       The command described by the SCSI Request Packet\r
                                is not supported by the host adapter.\r
                                This includes the case of Bi-directional SCSI\r
                                commands not supported by the implementation.\r
                                The SCSI Request Packet was not sent,\r
                                so no additional status information is available.\r
  @retval EFI_TIMEOUT           A timeout occurred while waiting for the SCSI\r
                                Request Packet to execute.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
IScsiExtScsiPassThruFunction (\r
  IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL                          *This,\r
  IN UINT8                                                    *Target,\r
  IN UINT64                                                   Lun,\r
  IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET           *Packet,\r
  IN EFI_EVENT                                                Event     OPTIONAL\r
  )\r
{\r
  if (Target[0] != 0) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  if ((Packet == NULL) || (Packet->Cdb == NULL)) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  return IScsiExecuteScsiCommand (This, Target, Lun, Packet);\r
}\r
\r
\r
/**\r
  Used to retrieve the list of legal Target IDs and LUNs for SCSI devices on\r
  a SCSI channel. These can either be the list SCSI devices that are actually\r
  present on the SCSI channel, or the list of legal Target Ids and LUNs for the\r
  SCSI channel. Regardless, the caller of this function must probe the Target ID      \r
  and LUN returned to see if a SCSI device is actually present at that location    \r
  on the SCSI channel. \r
\r
  @param[in]       This          The EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.\r
  @param[in, out]  Target        On input, a pointer to the Target ID of a SCSI\r
                                 device present on the SCSI channel.  On output, a\r
                                 pointer to the Target ID of the next SCSI device\r
                                 present on a SCSI channel.  An input value of\r
                                 0xFFFFFFFF retrieves the Target ID of the first\r
                                 SCSI device present on a SCSI channel.\r
  @param[in, out]  Lun           On input, a pointer to the LUN of a SCSI device\r
                                 present on the SCSI channel. On output, a pointer\r
                                 to the LUN of the next SCSI device present on a\r
                                 SCSI channel.\r
\r
  @retval EFI_SUCCESS            The Target ID and Lun of the next SCSI device on\r
                                 the SCSI channel was returned in Target and Lun.\r
  @retval EFI_NOT_FOUND          There are no more SCSI devices on this SCSI\r
                                 channel.\r
  @retval EFI_INVALID_PARAMETER  Target is not 0xFFFFFFFF,and Target and Lun were\r
                                 not returned on a previous call to\r
                                 GetNextDevice().\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
IScsiExtScsiPassThruGetNextTargetLun (\r
  IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL  *This,\r
  IN OUT UINT8                        **Target,\r
  IN OUT UINT64                       *Lun\r
  )\r
{\r
  ISCSI_DRIVER_DATA           *Private;\r
  ISCSI_SESSION_CONFIG_NVDATA *ConfigNvData;\r
  UINT8                       TargetId[TARGET_MAX_BYTES];\r
\r
  Private       = ISCSI_DRIVER_DATA_FROM_EXT_SCSI_PASS_THRU (This);\r
  ConfigNvData  = &Private->Session->ConfigData->SessionConfigData;\r
\r
  if ((*Target)[0] == 0 && (CompareMem (Lun, ConfigNvData->BootLun, sizeof (UINT64)) == 0)) {\r
    //\r
    // Only one <Target, Lun> pair per iSCSI Driver instance.\r
    //\r
    return EFI_NOT_FOUND;\r
  }\r
\r
  SetMem (TargetId, TARGET_MAX_BYTES, 0xFF);\r
  if (CompareMem (*Target, TargetId, TARGET_MAX_BYTES) == 0) {\r
    (*Target)[0] = 0;\r
    CopyMem (Lun, ConfigNvData->BootLun, sizeof (UINT64));\r
\r
    return EFI_SUCCESS;\r
  }\r
\r
  return EFI_INVALID_PARAMETER;\r
}\r
\r
\r
/**\r
  Allocate and build a device path node for a SCSI device on a SCSI channel.\r
\r
  @param[in]       This          Protocol instance pointer.\r
  @param[in]       Target        The Target ID of the SCSI device for which a\r
                                 device path node is to be allocated and built.\r
  @param[in]       Lun           The LUN of the SCSI device for which a device\r
                                 path node is to be allocated and built.\r
  @param[in, out]  DevicePath    A pointer to a single device path node that\r
                                 describes the SCSI device specified by  Target and\r
                                 Lun. This function is responsible  for allocating\r
                                 the buffer DevicePath with the boot service\r
                                 AllocatePool().  It is the caller's\r
                                 responsibility to free DevicePath when the caller\r
                                 is finished with DevicePath.\r
\r
  @retval EFI_SUCCESS            The device path node that describes the SCSI\r
                                 device specified by Target and Lun was allocated\r
                                 and  returned in DevicePath.\r
  @retval EFI_NOT_FOUND          The SCSI devices specified by Target and Lun does\r
                                 not exist on the SCSI channel.\r
  @retval EFI_INVALID_PARAMETER  DevicePath is NULL.\r
  @retval EFI_OUT_OF_RESOURCES   There are not enough resources to allocate\r
                                 DevicePath.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
IScsiExtScsiPassThruBuildDevicePath (\r
  IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL  *This,\r
  IN UINT8                            *Target,\r
  IN UINT64                           Lun,\r
  IN OUT EFI_DEVICE_PATH_PROTOCOL     **DevicePath\r
  )\r
{\r
  ISCSI_DRIVER_DATA             *Private;\r
  ISCSI_SESSION                 *Session;\r
  ISCSI_SESSION_CONFIG_NVDATA   *ConfigNvData;\r
  ISCSI_CHAP_AUTH_CONFIG_NVDATA *AuthConfig;\r
  EFI_DEV_PATH                  *Node;\r
  UINTN                         DevPathNodeLen;\r
\r
  if ((DevicePath == NULL)) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  if (Target[0] != 0) {\r
    return EFI_NOT_FOUND;\r
  }\r
\r
  Private       = ISCSI_DRIVER_DATA_FROM_EXT_SCSI_PASS_THRU (This);\r
  Session       = Private->Session;\r
  ConfigNvData  = &Session->ConfigData->SessionConfigData;\r
  AuthConfig    = Session->AuthData.CHAP.AuthConfig;\r
\r
  if (CompareMem (&Lun, ConfigNvData->BootLun, sizeof (UINT64)) != 0) {\r
    return EFI_NOT_FOUND;\r
  }\r
\r
  DevPathNodeLen  = sizeof (ISCSI_DEVICE_PATH) + AsciiStrLen (ConfigNvData->TargetName) + 1;\r
  Node            = AllocateZeroPool (DevPathNodeLen);\r
  if (Node == NULL) {\r
    return EFI_OUT_OF_RESOURCES;\r
  }\r
\r
  Node->DevPath.Type    = MESSAGING_DEVICE_PATH;\r
  Node->DevPath.SubType = MSG_ISCSI_DP;\r
  SetDevicePathNodeLength (&Node->DevPath, DevPathNodeLen);\r
\r
  //\r
  // 0 for TCP, others are reserved.\r
  //\r
  Node->Iscsi.NetworkProtocol = 0;\r
\r
  Node->Iscsi.LoginOption     = 0;\r
\r
  switch (Session->AuthType) {\r
  case ISCSI_AUTH_TYPE_NONE:\r
    Node->Iscsi.LoginOption |= 0x0800;\r
    break;\r
\r
  case ISCSI_AUTH_TYPE_CHAP:\r
    //\r
    // Bit12: 0=CHAP_BI, 1=CHAP_UNI\r
    //\r
    if (AuthConfig->CHAPType == ISCSI_CHAP_UNI) {\r
      Node->Iscsi.LoginOption |= 0x1000;\r
    }\r
    break;\r
\r
  default:\r
    break;\r
  }\r
\r
  CopyMem (&Node->Iscsi.Lun, ConfigNvData->BootLun, sizeof (UINT64));\r
  Node->Iscsi.TargetPortalGroupTag = Session->TargetPortalGroupTag;\r
  AsciiStrCpy ((CHAR8 *) Node + sizeof (ISCSI_DEVICE_PATH), ConfigNvData->TargetName);\r
\r
  *DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) Node;\r
\r
  return EFI_SUCCESS;\r
}\r
\r
\r
/**\r
  Translate a device path node to a Target ID and LUN.\r
\r
  @param[in]   This              Protocol instance pointer.\r
  @param[in]   DevicePath        A pointer to the device path node that  describes\r
                                 a SCSI device on the SCSI channel.\r
  @param[out]  Target            A pointer to the Target ID of a SCSI device on\r
                                 the SCSI channel.\r
  @param[out]  Lun               A pointer to the LUN of a SCSI device on the SCSI\r
                                 channel.\r
\r
  @retval EFI_SUCCESS            DevicePath was successfully translated to a\r
                                 Target ID and LUN, and they were returned  in\r
                                 Target and Lun.\r
  @retval EFI_INVALID_PARAMETER  DevicePath/Target/Lun is NULL.\r
  @retval EFI_UNSUPPORTED        This driver does not support the device path  node\r
                                 type in DevicePath.\r
  @retval EFI_NOT_FOUND          A valid translation does not exist from DevicePath \r
                                 to a TargetID and LUN.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
IScsiExtScsiPassThruGetTargetLun (\r
  IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL  *This,\r
  IN EFI_DEVICE_PATH_PROTOCOL         *DevicePath,\r
  OUT UINT8                           **Target,\r
  OUT UINT64                          *Lun\r
  )\r
{\r
  ISCSI_DRIVER_DATA           *Private;\r
  ISCSI_SESSION_CONFIG_NVDATA *ConfigNvData;\r
\r
  if ((DevicePath == NULL) || (Target == NULL) || (Lun == NULL)) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  if ((DevicePath->Type != MESSAGING_DEVICE_PATH) ||\r
      (DevicePath->SubType != MSG_ISCSI_DP) ||\r
      (DevicePathNodeLength (DevicePath) <= sizeof (ISCSI_DEVICE_PATH))\r
      ) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  Private       = ISCSI_DRIVER_DATA_FROM_EXT_SCSI_PASS_THRU (This);\r
  ConfigNvData  = &Private->Session->ConfigData->SessionConfigData;\r
\r
  SetMem (*Target, TARGET_MAX_BYTES, 0xFF);\r
  (*Target)[0] = 0;\r
\r
  if (AsciiStrCmp (ConfigNvData->TargetName, (CHAR8 *) DevicePath + sizeof (ISCSI_DEVICE_PATH)) != 0) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  CopyMem (Lun, ConfigNvData->BootLun, sizeof (UINT64));\r
\r
  return EFI_SUCCESS;\r
}\r
\r
\r
/**\r
  Resets a SCSI channel. This operation resets all the SCSI devices connected to\r
  the SCSI channel.\r
\r
  @param[in]  This               Protocol instance pointer.\r
\r
  @retval EFI_UNSUPPORTED        It is not supported.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
IScsiExtScsiPassThruResetChannel (\r
  IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL  *This\r
  )\r
{\r
  return EFI_UNSUPPORTED;\r
}\r
\r
\r
/**\r
  Resets a SCSI device that is connected to a SCSI channel.\r
\r
  @param[in]  This               Protocol instance pointer.\r
  @param[in]  Target             The Target ID of the SCSI device to reset.\r
  @param[in]  Lun                The LUN of the SCSI device to reset.\r
\r
  @retval EFI_UNSUPPORTED        It is not supported.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
IScsiExtScsiPassThruResetTargetLun (\r
  IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL  *This,\r
  IN UINT8                            *Target,\r
  IN UINT64                           Lun\r
  )\r
{\r
  return EFI_UNSUPPORTED;\r
}\r
\r
/**\r
  Retrieve the list of legal Target IDs for SCSI devices on a SCSI channel.                         \r
\r
  @param[in]       This         A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL\r
                                instance.\r
  @param[in, out]  Target       (TARGET_MAX_BYTES) of a SCSI device present on\r
                                the SCSI channel. On output, a pointer to the\r
                                Target ID (an array of TARGET_MAX_BYTES) of the\r
                                next SCSI device present on a SCSI channel.\r
                                An input value of 0xF(all bytes in the array are 0xF)\r
                                in the Target array retrieves the Target ID of the\r
                                first SCSI device present on a SCSI channel.                 \r
\r
  @retval EFI_SUCCESS           The Target ID of the next SCSI device on the SCSI\r
                                channel was returned in Target.\r
  @retval EFI_INVALID_PARAMETER Target or Lun is NULL.\r
  @retval EFI_TIMEOUT           Target array is not all 0xF, and Target was not\r
                                returned on a previous call to GetNextTarget().\r
  @retval EFI_NOT_FOUND         There are no more SCSI devices on this SCSI channel.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
IScsiExtScsiPassThruGetNextTarget (\r
  IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL  *This,\r
  IN OUT UINT8                        **Target\r
  )\r
{\r
  UINT8 TargetId[TARGET_MAX_BYTES];\r
\r
  SetMem (TargetId, TARGET_MAX_BYTES, 0xFF);\r
\r
  if (CompareMem (*Target, TargetId, TARGET_MAX_BYTES) == 0) {\r
    (*Target)[0] = 0;\r
    return EFI_SUCCESS;\r
  } else if ((*Target)[0] == 0) {\r
    return EFI_NOT_FOUND;\r
  } else {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
}\r
\r