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[mirror_edk2.git] / MdeModulePkg / Bus / Scsi / ScsiBusDxe / ScsiBus.h

/** @file\r
  Header file for SCSI Bus Driver.\r
\r
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#ifndef _SCSI_BUS_H_\r
#define _SCSI_BUS_H_\r
\r
#include <Uefi.h>\r
\r
#include <Protocol/ScsiPassThru.h>\r
#include <Protocol/ScsiPassThruExt.h>\r
#include <Protocol/ScsiIo.h>\r
#include <Protocol/ComponentName.h>\r
#include <Protocol/DriverBinding.h>\r
#include <Protocol/DevicePath.h>\r
\r
#include <Library/DebugLib.h>\r
#include <Library/UefiDriverEntryPoint.h>\r
#include <Library/UefiLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
#include <Library/UefiScsiLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/DevicePathLib.h>\r
#include <Library/ReportStatusCodeLib.h>\r
\r
#include <IndustryStandard/Scsi.h>\r
\r
#define SCSI_IO_DEV_SIGNATURE  SIGNATURE_32 ('s', 'c', 'i', 'o')\r
\r
typedef union {\r
  UINT32    Scsi;\r
  UINT8     ExtScsi[4];\r
} SCSI_ID;\r
\r
typedef struct _SCSI_TARGET_ID {\r
  SCSI_ID    ScsiId;\r
  UINT8      ExtScsiId[12];\r
} SCSI_TARGET_ID;\r
\r
typedef struct {\r
  VOID    *Data1;\r
  VOID    *Data2;\r
} SCSI_EVENT_DATA;\r
\r
//\r
// SCSI Bus Controller device structure\r
//\r
#define SCSI_BUS_DEVICE_SIGNATURE  SIGNATURE_32 ('s', 'c', 's', 'i')\r
\r
//\r
// SCSI Bus Timeout Experience Value\r
//\r
#define SCSI_BUS_TIMEOUT  EFI_TIMER_PERIOD_SECONDS (3)\r
\r
//\r
// The ScsiBusProtocol is just used to locate ScsiBusDev\r
// structure in the SCSIBusDriverBindingStop(). Then we can\r
// Close all opened protocols and release this structure.\r
// ScsiBusProtocol is the private protocol.\r
// gEfiCallerIdGuid will be used as its protocol guid.\r
//\r
typedef struct _EFI_SCSI_BUS_PROTOCOL {\r
  UINT64    Reserved;\r
} EFI_SCSI_BUS_PROTOCOL;\r
\r
typedef struct _SCSI_BUS_DEVICE {\r
  UINTN                              Signature;\r
  EFI_SCSI_BUS_PROTOCOL              BusIdentify;\r
  BOOLEAN                            ExtScsiSupport;\r
  EFI_SCSI_PASS_THRU_PROTOCOL        *ScsiInterface;\r
  EFI_EXT_SCSI_PASS_THRU_PROTOCOL    *ExtScsiInterface;\r
  EFI_DEVICE_PATH_PROTOCOL           *DevicePath;\r
} SCSI_BUS_DEVICE;\r
\r
#define SCSI_BUS_CONTROLLER_DEVICE_FROM_THIS(a)  CR (a, SCSI_BUS_DEVICE, BusIdentify, SCSI_BUS_DEVICE_SIGNATURE)\r
\r
typedef struct {\r
  UINT32                             Signature;\r
  EFI_HANDLE                         Handle;\r
  EFI_SCSI_IO_PROTOCOL               ScsiIo;\r
  EFI_DEVICE_PATH_PROTOCOL           *DevicePath;\r
  BOOLEAN                            ExtScsiSupport;\r
  EFI_SCSI_PASS_THRU_PROTOCOL        *ScsiPassThru;\r
  EFI_EXT_SCSI_PASS_THRU_PROTOCOL    *ExtScsiPassThru;\r
  SCSI_BUS_DEVICE                    *ScsiBusDeviceData;\r
  SCSI_TARGET_ID                     Pun;\r
  UINT64                             Lun;\r
  UINT8                              ScsiDeviceType;\r
  UINT8                              ScsiVersion;\r
  BOOLEAN                            RemovableDevice;\r
} SCSI_IO_DEV;\r
\r
#define SCSI_IO_DEV_FROM_THIS(a)  CR (a, SCSI_IO_DEV, ScsiIo, SCSI_IO_DEV_SIGNATURE)\r
\r
//\r
// Global Variables\r
//\r
extern EFI_DRIVER_BINDING_PROTOCOL   gScsiBusDriverBinding;\r
extern EFI_COMPONENT_NAME_PROTOCOL   gScsiBusComponentName;\r
extern EFI_COMPONENT_NAME2_PROTOCOL  gScsiBusComponentName2;\r
\r
/**\r
  Test to see if this driver supports ControllerHandle.\r
\r
  This service is called by the EFI boot service ConnectController(). In order\r
  to make drivers as small as possible, there are a few calling restrictions for\r
  this service. ConnectController() must follow these calling restrictions. If\r
  any other agent wishes to call Supported() it must also follow these calling\r
  restrictions.\r
\r
  @param  This                Protocol instance pointer.\r
  @param  ControllerHandle    Handle of device to test\r
  @param  RemainingDevicePath Optional parameter use to pick a specific child\r
                              device to start.\r
\r
  @retval EFI_SUCCESS         This driver supports this device\r
  @retval EFI_ALREADY_STARTED This driver is already running on this device\r
  @retval other               This driver does not support this device\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
SCSIBusDriverBindingSupported (\r
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,\r
  IN EFI_HANDLE                   Controller,\r
  IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath\r
  );\r
\r
/**\r
  Start this driver on ControllerHandle.\r
\r
  This service is called by the EFI boot service ConnectController(). In order\r
  to make drivers as small as possible, there are a few calling restrictions for\r
  this service. ConnectController() must follow these calling restrictions. If\r
  any other agent wishes to call Start() it must also follow these calling\r
  restrictions.\r
\r
  @param  This                 Protocol instance pointer.\r
  @param  ControllerHandle     Handle of device to bind driver to\r
  @param  RemainingDevicePath  Optional parameter use to pick a specific child\r
                               device to start.\r
\r
  @retval EFI_SUCCESS          This driver is added to ControllerHandle\r
  @retval EFI_ALREADY_STARTED  This driver is already running on ControllerHandle\r
  @retval other                This driver does not support this device\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
SCSIBusDriverBindingStart (\r
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,\r
  IN EFI_HANDLE                   Controller,\r
  IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath\r
  );\r
\r
/**\r
  Stop this driver on ControllerHandle.\r
\r
  This service is called by the EFI boot service DisconnectController().\r
  In order to make drivers as small as possible, there are a few calling\r
  restrictions for this service. DisconnectController() must follow these\r
  calling restrictions. If any other agent wishes to call Stop() it must also\r
  follow these calling restrictions.\r
\r
  @param  This              Protocol instance pointer.\r
  @param  ControllerHandle  Handle of device to stop driver on\r
  @param  NumberOfChildren  Number of Handles in ChildHandleBuffer. If number of\r
                            children is zero stop the entire bus driver.\r
  @param  ChildHandleBuffer List of Child Handles to Stop.\r
\r
  @retval EFI_SUCCESS       This driver is removed ControllerHandle\r
  @retval other             This driver was not removed from this device\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
SCSIBusDriverBindingStop (\r
  IN  EFI_DRIVER_BINDING_PROTOCOL  *This,\r
  IN  EFI_HANDLE                   Controller,\r
  IN  UINTN                        NumberOfChildren,\r
  IN  EFI_HANDLE                   *ChildHandleBuffer\r
  );\r
\r
//\r
// EFI Component Name Functions\r
//\r
\r
/**\r
  Retrieves a Unicode string that is the user readable name of the driver.\r
\r
  This function retrieves the user readable name of a driver in the form of a\r
  Unicode string. If the driver specified by This has a user readable name in\r
  the language specified by Language, then a pointer to the driver name is\r
  returned in DriverName, and EFI_SUCCESS is returned. If the driver specified\r
  by This does not support the language specified by Language,\r
  then EFI_UNSUPPORTED is returned.\r
\r
  @param  This                  A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or\r
                                EFI_COMPONENT_NAME_PROTOCOL instance.\r
\r
  @param  Language              A pointer to a Null-terminated ASCII string\r
                                array indicating the language. This is the\r
                                language of the driver name that the caller is\r
                                requesting, and it must match one of the\r
                                languages specified in SupportedLanguages. The\r
                                number of languages supported by a driver is up\r
                                to the driver writer. Language is specified\r
                                in RFC 4646 or ISO 639-2 language code format.\r
\r
  @param  DriverName            A pointer to the Unicode string to return.\r
                                This Unicode string is the name of the\r
                                driver specified by This in the language\r
                                specified by Language.\r
\r
  @retval EFI_SUCCESS           The Unicode string for the Driver specified by\r
                                This and the language specified by Language was\r
                                returned in DriverName.\r
\r
  @retval EFI_INVALID_PARAMETER Language is NULL.\r
\r
  @retval EFI_INVALID_PARAMETER DriverName is NULL.\r
\r
  @retval EFI_UNSUPPORTED       The driver specified by This does not support\r
                                the language specified by Language.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
ScsiBusComponentNameGetDriverName (\r
  IN  EFI_COMPONENT_NAME_PROTOCOL  *This,\r
  IN  CHAR8                        *Language,\r
  OUT CHAR16                       **DriverName\r
  );\r
\r
/**\r
  Retrieves a Unicode string that is the user readable name of the controller\r
  that is being managed by a driver.\r
\r
  This function retrieves the user readable name of the controller specified by\r
  ControllerHandle and ChildHandle in the form of a Unicode string. If the\r
  driver specified by This has a user readable name in the language specified by\r
  Language, then a pointer to the controller name is returned in ControllerName,\r
  and EFI_SUCCESS is returned.  If the driver specified by This is not currently\r
  managing the controller specified by ControllerHandle and ChildHandle,\r
  then EFI_UNSUPPORTED is returned.  If the driver specified by This does not\r
  support the language specified by Language, then EFI_UNSUPPORTED is returned.\r
\r
  @param  This                  A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or\r
                                EFI_COMPONENT_NAME_PROTOCOL instance.\r
\r
  @param  ControllerHandle      The handle of a controller that the driver\r
                                specified by This is managing.  This handle\r
                                specifies the controller whose name is to be\r
                                returned.\r
\r
  @param  ChildHandle           The handle of the child controller to retrieve\r
                                the name of.  This is an optional parameter that\r
                                may be NULL.  It will be NULL for device\r
                                drivers.  It will also be NULL for a bus drivers\r
                                that wish to retrieve the name of the bus\r
                                controller.  It will not be NULL for a bus\r
                                driver that wishes to retrieve the name of a\r
                                child controller.\r
\r
  @param  Language              A pointer to a Null-terminated ASCII string\r
                                array indicating the language.  This is the\r
                                language of the driver name that the caller is\r
                                requesting, and it must match one of the\r
                                languages specified in SupportedLanguages. The\r
                                number of languages supported by a driver is up\r
                                to the driver writer. Language is specified in\r
                                RFC 4646 or ISO 639-2 language code format.\r
\r
  @param  ControllerName        A pointer to the Unicode string to return.\r
                                This Unicode string is the name of the\r
                                controller specified by ControllerHandle and\r
                                ChildHandle in the language specified by\r
                                Language from the point of view of the driver\r
                                specified by This.\r
\r
  @retval EFI_SUCCESS           The Unicode string for the user readable name in\r
                                the language specified by Language for the\r
                                driver specified by This was returned in\r
                                DriverName.\r
\r
  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.\r
\r
  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid\r
                                EFI_HANDLE.\r
\r
  @retval EFI_INVALID_PARAMETER Language is NULL.\r
\r
  @retval EFI_INVALID_PARAMETER ControllerName is NULL.\r
\r
  @retval EFI_UNSUPPORTED       The driver specified by This is not currently\r
                                managing the controller specified by\r
                                ControllerHandle and ChildHandle.\r
\r
  @retval EFI_UNSUPPORTED       The driver specified by This does not support\r
                                the language specified by Language.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
ScsiBusComponentNameGetControllerName (\r
  IN  EFI_COMPONENT_NAME_PROTOCOL  *This,\r
  IN  EFI_HANDLE                   ControllerHandle,\r
  IN  EFI_HANDLE                   ChildHandle        OPTIONAL,\r
  IN  CHAR8                        *Language,\r
  OUT CHAR16                       **ControllerName\r
  );\r
\r
/**\r
  Retrieves the device type information of the SCSI Controller.\r
\r
  @param  This          Protocol instance pointer.\r
  @param  DeviceType    A pointer to the device type information retrieved from\r
                        the SCSI Controller.\r
\r
  @retval EFI_SUCCESS             Retrieves the device type information successfully.\r
  @retval EFI_INVALID_PARAMETER   The DeviceType is NULL.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
ScsiGetDeviceType (\r
  IN  EFI_SCSI_IO_PROTOCOL  *This,\r
  OUT UINT8                 *DeviceType\r
  );\r
\r
/**\r
  Retrieves the device location in the SCSI channel.\r
\r
  @param  This   Protocol instance pointer.\r
  @param  Target A pointer to the Target ID of a SCSI device\r
                 on the SCSI channel.\r
  @param  Lun    A pointer to the LUN of the SCSI device on\r
                 the SCSI channel.\r
\r
  @retval EFI_SUCCESS           Retrieves the device location successfully.\r
  @retval EFI_INVALID_PARAMETER The Target or Lun is NULL.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
ScsiGetDeviceLocation (\r
  IN  EFI_SCSI_IO_PROTOCOL  *This,\r
  IN OUT UINT8              **Target,\r
  OUT UINT64                *Lun\r
  );\r
\r
/**\r
  Resets the SCSI Bus that the SCSI Controller is attached to.\r
\r
  @param  This  Protocol instance pointer.\r
\r
  @retval  EFI_SUCCESS       The SCSI bus is reset successfully.\r
  @retval  EFI_DEVICE_ERROR  Errors encountered when resetting the SCSI bus.\r
  @retval  EFI_UNSUPPORTED   The bus reset operation is not supported by the\r
                             SCSI Host Controller.\r
  @retval  EFI_TIMEOUT       A timeout occurred while attempting to reset\r
                             the SCSI bus.\r
**/\r
EFI_STATUS\r
EFIAPI\r
ScsiResetBus (\r
  IN  EFI_SCSI_IO_PROTOCOL  *This\r
  );\r
\r
/**\r
  Resets the SCSI Controller that the device handle specifies.\r
\r
  @param  This  Protocol instance pointer.\r
\r
  @retval  EFI_SUCCESS       Reset the SCSI controller successfully.\r
  @retval  EFI_DEVICE_ERROR  Errors are encountered when resetting the SCSI Controller.\r
  @retval  EFI_UNSUPPORTED   The SCSI bus does not support a device reset operation.\r
  @retval  EFI_TIMEOUT       A timeout occurred while attempting to reset the\r
                             SCSI Controller.\r
**/\r
EFI_STATUS\r
EFIAPI\r
ScsiResetDevice (\r
  IN  EFI_SCSI_IO_PROTOCOL  *This\r
  );\r
\r
/**\r
  Sends a SCSI Request Packet to the SCSI Controller for execution.\r
\r
  @param  This            Protocol instance pointer.\r
  @param  CommandPacket   The SCSI request packet to send to the SCSI\r
                          Controller specified by the device handle.\r
  @param  Event           If the SCSI bus where the SCSI device is attached\r
                          does not support non-blocking I/O, then Event is\r
                          ignored, and blocking I/O is performed.\r
                          If Event is NULL, then blocking I/O is performed.\r
                          If Event is not NULL and non-blocking I/O is\r
                          supported, then non-blocking I/O is performed,\r
                          and Event will be signaled when the SCSI Request\r
                          Packet completes.\r
\r
  @retval EFI_SUCCESS         The SCSI Request Packet was sent by the host\r
                              successfully, and TransferLength bytes were\r
                              transferred to/from DataBuffer.See\r
                              HostAdapterStatus, TargetStatus,\r
                              SenseDataLength, and SenseData in that order\r
                              for additional status information.\r
  @retval EFI_BAD_BUFFER_SIZE The SCSI Request Packet was executed,\r
                              but the entire DataBuffer could not be transferred.\r
                              The actual number of bytes transferred is returned\r
                              in TransferLength. See HostAdapterStatus,\r
                              TargetStatus, SenseDataLength, and SenseData in\r
                              that order for additional status information.\r
  @retval EFI_NOT_READY       The SCSI Request Packet could not be sent because\r
                              there are too many SCSI Command Packets already\r
                              queued.The caller may retry again later.\r
  @retval EFI_DEVICE_ERROR    A device error occurred while attempting to send\r
                              the SCSI Request Packet. See HostAdapterStatus,\r
                              TargetStatus, SenseDataLength, and SenseData in\r
                              that order for additional status information.\r
  @retval EFI_INVALID_PARAMETER  The contents of CommandPacket are invalid.\r
                                 The SCSI Request Packet was not sent, so no\r
                                 additional status information is available.\r
  @retval EFI_UNSUPPORTED     The command described by the SCSI Request Packet\r
                              is not supported by the SCSI initiator(i.e., SCSI\r
                              Host Controller). The SCSI Request Packet was not\r
                              sent, so no additional status information is\r
                              available.\r
  @retval EFI_TIMEOUT         A timeout occurred while waiting for the SCSI\r
                              Request Packet to execute. See HostAdapterStatus,\r
                              TargetStatus, SenseDataLength, and SenseData in\r
                              that order for additional status information.\r
**/\r
EFI_STATUS\r
EFIAPI\r
ScsiExecuteSCSICommand (\r
  IN  EFI_SCSI_IO_PROTOCOL                 *This,\r
  IN OUT  EFI_SCSI_IO_SCSI_REQUEST_PACKET  *CommandPacket,\r
  IN  EFI_EVENT                            Event  OPTIONAL\r
  );\r
\r
/**\r
  Scan SCSI Bus to discover the device, and attach ScsiIoProtocol to it.\r
\r
  @param  This           Protocol instance pointer\r
  @param  Controller     Controller handle\r
  @param  TargetId       Target to be scanned\r
  @param  Lun            The Lun of the SCSI device on the SCSI channel.\r
  @param  ScsiBusDev     The pointer of SCSI_BUS_DEVICE\r
\r
  @retval EFI_SUCCESS           Successfully to discover the device and attach\r
                                ScsiIoProtocol to it.\r
  @retval EFI_OUT_OF_RESOURCES  Fail to discover the device.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
ScsiScanCreateDevice (\r
  IN     EFI_DRIVER_BINDING_PROTOCOL  *This,\r
  IN     EFI_HANDLE                   Controller,\r
  IN     SCSI_TARGET_ID               *TargetId,\r
  IN     UINT64                       Lun,\r
  IN OUT SCSI_BUS_DEVICE              *ScsiBusDev\r
  );\r
\r
/**\r
  Discovery SCSI Device\r
\r
  @param  ScsiIoDevice    The pointer of SCSI_IO_DEV\r
\r
  @retval  TRUE   Find SCSI Device and verify it.\r
  @retval  FALSE  Unable to find SCSI Device.\r
\r
**/\r
BOOLEAN\r
DiscoverScsiDevice (\r
  IN  OUT  SCSI_IO_DEV  *ScsiIoDevice\r
  );\r
\r
#endif\r