[mirror_edk2.git] / MdePkg / Include / Protocol / ScsiIo.h

/** @file\r
  EFI_SCSI_IO_PROTOCOL as defined in UEFI 2.0.\r
  This protocol is used by code, typically drivers, running in the EFI boot \r
  services environment to access SCSI devices. In particular, functions for \r
  managing devices on SCSI buses are defined here.\r
\r
  Copyright (c) 2006 - 2008, Intel Corporation                                                         \r
  All rights reserved. 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
#ifndef __EFI_SCSI_IO_PROTOCOL_H__\r
#define __EFI_SCSI_IO_PROTOCOL_H__\r
\r
#define EFI_SCSI_IO_PROTOCOL_GUID \\r
  { \\r
    0x932f47e6, 0x2362, 0x4002, {0x80, 0x3e, 0x3c, 0xd5, 0x4b, 0x13, 0x8f, 0x85 } \\r
  }\r
\r
///\r
/// Forward reference for pure ANSI compatability\r
///\r
typedef struct _EFI_SCSI_IO_PROTOCOL EFI_SCSI_IO_PROTOCOL;\r
\r
//\r
// SCSI Data Direction definition\r
//\r
#define EFI_SCSI_IO_DATA_DIRECTION_READ                        0\r
#define EFI_SCSI_IO_DATA_DIRECTION_WRITE                       1\r
#define EFI_SCSI_IO_DATA_DIRECTION_BIDIRECTIONAL               2\r
\r
//\r
// SCSI Host Adapter Status definition\r
//\r
#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_OK                     0x00\r
#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_TIMEOUT_COMMAND        0x09    // timeout when processing the command\r
#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_TIMEOUT                0x0b    // timeout when waiting for the command processing\r
#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_MESSAGE_REJECT         0x0d    // a message reject was received when processing command\r
#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_BUS_RESET              0x0e    // a bus reset was detected\r
#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_PARITY_ERROR           0x0f\r
#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_REQUEST_SENSE_FAILED   0x10    // the adapter failed in issuing request sense command\r
#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_SELECTION_TIMEOUT      0x11    // selection timeout\r
#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_DATA_OVERRUN_UNDERRUN  0x12    // data overrun or data underrun\r
#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_BUS_FREE               0x13    // Unexepected bus free\r
#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_PHASE_ERROR            0x14    // Target bus phase sequence failure\r
#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_OTHER                  0x7f\r
\r
\r
//\r
// SCSI Target Status definition\r
//\r
#define EFI_SCSI_IO_STATUS_TARGET_GOOD                         0x00\r
#define EFI_SCSI_IO_STATUS_TARGET_CHECK_CONDITION              0x02    // check condition\r
#define EFI_SCSI_IO_STATUS_TARGET_CONDITION_MET                0x04    // condition met\r
#define EFI_SCSI_IO_STATUS_TARGET_BUSY                         0x08    // busy\r
#define EFI_SCSI_IO_STATUS_TARGET_INTERMEDIATE                 0x10    // intermediate\r
#define EFI_SCSI_IO_STATUS_TARGET_INTERMEDIATE_CONDITION_MET   0x14    // intermediate-condition met\r
#define EFI_SCSI_IO_STATUS_TARGET_RESERVATION_CONFLICT         0x18    // reservation conflict\r
#define EFI_SCSI_IO_STATUS_TARGET_COMMOND_TERMINATED           0x22    // command terminated\r
#define EFI_SCSI_IO_STATUS_TARGET_QUEUE_FULL                   0x28    // queue full\r
\r
typedef struct {\r
  UINT64                              Timeout;\r
  VOID                                *InDataBuffer;\r
  VOID                                *OutDataBuffer;\r
  VOID                                *SenseData;\r
  VOID                                *Cdb;\r
  UINT32                              InTransferLength;\r
  UINT32                              OutTransferLength;\r
  UINT8                               CdbLength;\r
  UINT8                               DataDirection;\r
  UINT8                               HostAdapterStatus;\r
  UINT8                               TargetStatus;\r
  UINT8                               SenseDataLength;\r
} EFI_SCSI_IO_SCSI_REQUEST_PACKET;\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\r
                     retrieved from 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
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SCSI_IO_PROTOCOL_GET_DEVICE_TYPE)(\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
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SCSI_IO_PROTOCOL_GET_DEVICE_LOCATION)(\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
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SCSI_IO_PROTOCOL_RESET_BUS)(\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\r
                           SCSI Controller.\r
  @retval EFI_UNSUPPORTED  The SCSI bus does not support a device\r
                           reset operation.\r
  @retval EFI_TIMEOUT      A timeout occurred while attempting to\r
                           reset the SCSI Controller.\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SCSI_IO_PROTOCOL_RESET_DEVICE)(\r
  IN EFI_SCSI_IO_PROTOCOL     *This\r
  );\r
\r
\r
/**\r
  Sends a SCSI Request Packet to the SCSI Controller for execution.\r
\r
  @param  This    Protocol instance pointer.\r
  @param  Packet  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
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SCSI_IO_PROTOCOL_EXEC_SCSI_COMMAND)(\r
  IN EFI_SCSI_IO_PROTOCOL                   *This,\r
  IN OUT  EFI_SCSI_IO_SCSI_REQUEST_PACKET   *Packet,\r
  IN EFI_EVENT                              Event  OPTIONAL\r
  );\r
\r
///\r
/// Provides services to manage and communicate with SCSI devices.\r
///\r
struct _EFI_SCSI_IO_PROTOCOL {\r
  EFI_SCSI_IO_PROTOCOL_GET_DEVICE_TYPE      GetDeviceType;\r
  EFI_SCSI_IO_PROTOCOL_GET_DEVICE_LOCATION  GetDeviceLocation;\r
  EFI_SCSI_IO_PROTOCOL_RESET_BUS            ResetBus;\r
  EFI_SCSI_IO_PROTOCOL_RESET_DEVICE         ResetDevice;\r
  EFI_SCSI_IO_PROTOCOL_EXEC_SCSI_COMMAND    ExecuteScsiCommand;    \r
\r
  ///\r
  /// Supplies the alignment requirement for any buffer used in a data transfer. \r
  /// IoAlign values of 0 and 1 mean that the buffer can be placed anywhere in memory. \r
  /// Otherwise, IoAlign must be a power of 2, and the requirement is that the \r
  /// start address of a buffer must be evenly divisible by IoAlign with no remainder.\r
  ///\r
  UINT32                                    IoAlign;\r
};\r
\r
extern EFI_GUID gEfiScsiIoProtocolGuid;\r
\r
#endif\r
Commit	Line	Data
d1f95000	1	/** @file\r
d1f95000	2	EFI_SCSI_IO_PROTOCOL as defined in UEFI 2.0.\r
4ca9b6c4 LG	3	This protocol is used by code, typically drivers, running in the EFI boot \r
	4	services environment to access SCSI devices. In particular, functions for \r
	5	managing devices on SCSI buses are defined here.\r
d1f95000	6	\r
4ca9b6c4	7	Copyright (c) 2006 - 2008, Intel Corporation \r
d1f95000	8	All rights reserved. This program and the accompanying materials \r
	9	are licensed and made available under the terms and conditions of the BSD License \r
	10	which accompanies this distribution. The full text of the license may be found at \r
	11	http://opensource.org/licenses/bsd-license.php \r
	12	\r
	13	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
	14	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
	15	\r
d1f95000	16	**/\r
	17	\r
	18	#ifndef __EFI_SCSI_IO_PROTOCOL_H__\r
	19	#define __EFI_SCSI_IO_PROTOCOL_H__\r
	20	\r
	21	#define EFI_SCSI_IO_PROTOCOL_GUID \\r
	22	{ \\r
eecd469b	23	0x932f47e6, 0x2362, 0x4002, {0x80, 0x3e, 0x3c, 0xd5, 0x4b, 0x13, 0x8f, 0x85 } \\r
d1f95000	24	}\r
d1f95000	25	\r
99e8ed21	26	///\r
	27	/// Forward reference for pure ANSI compatability\r
	28	///\r
d1f95000	29	typedef struct _EFI_SCSI_IO_PROTOCOL EFI_SCSI_IO_PROTOCOL;\r
	30	\r
	31	//\r
	32	// SCSI Data Direction definition\r
	33	//\r
	34	#define EFI_SCSI_IO_DATA_DIRECTION_READ 0\r
	35	#define EFI_SCSI_IO_DATA_DIRECTION_WRITE 1\r
	36	#define EFI_SCSI_IO_DATA_DIRECTION_BIDIRECTIONAL 2\r
	37	\r
	38	//\r
	39	// SCSI Host Adapter Status definition\r
	40	//\r
	41	#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_OK 0x00\r
	42	#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_TIMEOUT_COMMAND 0x09 // timeout when processing the command\r
	43	#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_TIMEOUT 0x0b // timeout when waiting for the command processing\r
	44	#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_MESSAGE_REJECT 0x0d // a message reject was received when processing command\r
	45	#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_BUS_RESET 0x0e // a bus reset was detected\r
	46	#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_PARITY_ERROR 0x0f\r
	47	#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_REQUEST_SENSE_FAILED 0x10 // the adapter failed in issuing request sense command\r
	48	#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_SELECTION_TIMEOUT 0x11 // selection timeout\r
	49	#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_DATA_OVERRUN_UNDERRUN 0x12 // data overrun or data underrun\r
	50	#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_BUS_FREE 0x13 // Unexepected bus free\r
	51	#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_PHASE_ERROR 0x14 // Target bus phase sequence failure\r
	52	#define EFI_SCSI_IO_STATUS_HOST_ADAPTER_OTHER 0x7f\r
	53	\r
	54	\r
	55	//\r
	56	// SCSI Target Status definition\r
	57	//\r
	58	#define EFI_SCSI_IO_STATUS_TARGET_GOOD 0x00\r
	59	#define EFI_SCSI_IO_STATUS_TARGET_CHECK_CONDITION 0x02 // check condition\r
	60	#define EFI_SCSI_IO_STATUS_TARGET_CONDITION_MET 0x04 // condition met\r
	61	#define EFI_SCSI_IO_STATUS_TARGET_BUSY 0x08 // busy\r
	62	#define EFI_SCSI_IO_STATUS_TARGET_INTERMEDIATE 0x10 // intermediate\r
	63	#define EFI_SCSI_IO_STATUS_TARGET_INTERMEDIATE_CONDITION_MET 0x14 // intermediate-condition met\r
	64	#define EFI_SCSI_IO_STATUS_TARGET_RESERVATION_CONFLICT 0x18 // reservation conflict\r
	65	#define EFI_SCSI_IO_STATUS_TARGET_COMMOND_TERMINATED 0x22 // command terminated\r
	66	#define EFI_SCSI_IO_STATUS_TARGET_QUEUE_FULL 0x28 // queue full\r
	67	\r
	68	typedef struct {\r
	69	UINT64 Timeout;\r
	70	VOID *InDataBuffer;\r
	71	VOID *OutDataBuffer;\r
	72	VOID *SenseData;\r
	73	VOID *Cdb;\r
	74	UINT32 InTransferLength;\r
	75	UINT32 OutTransferLength;\r
	76	UINT8 CdbLength;\r
	77	UINT8 DataDirection;\r
	78	UINT8 HostAdapterStatus;\r
	79	UINT8 TargetStatus;\r
	80	UINT8 SenseDataLength;\r
	81	} EFI_SCSI_IO_SCSI_REQUEST_PACKET;\r
	82	\r
	83	/**\r
	84	Retrieves the device type information of the SCSI Controller.\r
	85	\r
	86	@param This Protocol instance pointer.\r
	87	@param DeviceType A pointer to the device type information\r
	88	retrieved from the SCSI Controller.\r
	89	\r
	90	@retval EFI_SUCCESS Retrieves the device type information successfully.\r
	91	@retval EFI_INVALID_PARAMETER The DeviceType is NULL.\r
	92	\r
93	**/\r
94	typedef\r
95	EFI_STATUS\r
8b13229b	96	(EFIAPI *EFI_SCSI_IO_PROTOCOL_GET_DEVICE_TYPE)(\r
d1f95000	97	IN EFI_SCSI_IO_PROTOCOL *This,\r
d1f95000	98	OUT UINT8 *DeviceType\r
ed66e1bc	99	);\r
d1f95000	100	\r
	101	/**\r
	102	Retrieves the device location in the SCSI channel.\r
	103	\r
	104	@param This Protocol instance pointer.\r
	105	@param Target A pointer to the Target ID of a SCSI device\r
	106	on the SCSI channel.\r
	107	@param Lun A pointer to the LUN of the SCSI device on\r
	108	the SCSI channel.\r
	109	\r
	110	@retval EFI_SUCCESS Retrieves the device location successfully.\r
	111	@retval EFI_INVALID_PARAMETER The Target or Lun is NULL.\r
	112	\r
	113	**/\r
	114	typedef\r
	115	EFI_STATUS\r
8b13229b	116	(EFIAPI *EFI_SCSI_IO_PROTOCOL_GET_DEVICE_LOCATION)(\r
d1f95000	117	IN EFI_SCSI_IO_PROTOCOL *This,\r
	118	IN OUT UINT8 **Target,\r
	119	OUT UINT64 *Lun\r
ed66e1bc	120	);\r
d1f95000	121	\r
	122	/**\r
	123	Resets the SCSI Bus that the SCSI Controller is attached to.\r
	124	\r
	125	@param This Protocol instance pointer.\r
	126	\r
	127	@retval EFI_SUCCESS The SCSI bus is reset successfully.\r
	128	@retval EFI_DEVICE_ERROR Errors encountered when resetting the SCSI bus.\r
	129	@retval EFI_UNSUPPORTED The bus reset operation is not supported by the\r
	130	SCSI Host Controller.\r
	131	@retval EFI_TIMEOUT A timeout occurred while attempting to reset\r
	132	the SCSI bus.\r
	133	\r
	134	**/\r
	135	typedef\r
	136	EFI_STATUS\r
8b13229b	137	(EFIAPI *EFI_SCSI_IO_PROTOCOL_RESET_BUS)(\r
d1f95000	138	IN EFI_SCSI_IO_PROTOCOL *This\r
ed66e1bc	139	);\r
d1f95000	140	\r
	141	/**\r
	142	Resets the SCSI Controller that the device handle specifies.\r
	143	\r
	144	@param This Protocol instance pointer.\r
	145	\r
	146	@retval EFI_SUCCESS Reset the SCSI controller successfully.\r
	147	@retval EFI_DEVICE_ERROR Errors are encountered when resetting the\r
	148	SCSI Controller.\r
	149	@retval EFI_UNSUPPORTED The SCSI bus does not support a device\r
	150	reset operation.\r
	151	@retval EFI_TIMEOUT A timeout occurred while attempting to\r
	152	reset the SCSI Controller.\r
	153	\r
	154	**/\r
	155	typedef\r
	156	EFI_STATUS\r
8b13229b	157	(EFIAPI *EFI_SCSI_IO_PROTOCOL_RESET_DEVICE)(\r
d1f95000	158	IN EFI_SCSI_IO_PROTOCOL *This\r
ed66e1bc	159	);\r
d1f95000	160	\r
	161	\r
	162	/**\r
	163	Sends a SCSI Request Packet to the SCSI Controller for execution.\r
	164	\r
	165	@param This Protocol instance pointer.\r
	166	@param Packet The SCSI request packet to send to the SCSI\r
	167	Controller specified by the device handle.\r
	168	@param Event If the SCSI bus where the SCSI device is attached\r
	169	does not support non-blocking I/O, then Event is\r
	170	ignored, and blocking I/O is performed.\r
	171	If Event is NULL, then blocking I/O is performed.\r
	172	If Event is not NULL and non-blocking I/O is\r
	173	supported, then non-blocking I/O is performed,\r
	174	and Event will be signaled when the SCSI Request\r
	175	Packet completes.\r
	176	\r
	177	@retval EFI_SUCCESS The SCSI Request Packet was sent by the host\r
	178	successfully, and TransferLength bytes were\r
	179	transferred to/from DataBuffer.See\r
	180	HostAdapterStatus, TargetStatus,\r
	181	SenseDataLength, and SenseData in that order\r
	182	for additional status information.\r
c7a54f25	183	@retval EFI_BAD_BUFFER_SIZE The SCSI Request Packet was executed,\r
d1f95000	184	but the entire DataBuffer could not be transferred.\r
	185	The actual number of bytes transferred is returned\r
	186	in TransferLength. See HostAdapterStatus,\r
	187	TargetStatus, SenseDataLength, and SenseData in\r
	188	that order for additional status information.\r
	189	@retval EFI_NOT_READY The SCSI Request Packet could not be sent because\r
	190	there are too many SCSI Command Packets already\r
	191	queued.The caller may retry again later.\r
	192	@retval EFI_DEVICE_ERROR A device error occurred while attempting to send\r
	193	the SCSI Request Packet. See HostAdapterStatus,\r
	194	TargetStatus, SenseDataLength, and SenseData in\r
	195	that order for additional status information.\r
	196	@retval EFI_INVALID_PARAMETER The contents of CommandPacket are invalid.\r
	197	The SCSI Request Packet was not sent, so no\r
	198	additional status information is available.\r
	199	@retval EFI_UNSUPPORTED The command described by the SCSI Request Packet\r
	200	is not supported by the SCSI initiator(i.e., SCSI\r
	201	Host Controller). The SCSI Request Packet was not\r
	202	sent, so no additional status information is\r
	203	available.\r
	204	@retval EFI_TIMEOUT A timeout occurred while waiting for the SCSI\r
	205	Request Packet to execute. See HostAdapterStatus,\r
	206	TargetStatus, SenseDataLength, and SenseData in\r
	207	that order for additional status information.\r
	208	\r
	209	**/\r
	210	typedef\r
	211	EFI_STATUS\r
8b13229b	212	(EFIAPI *EFI_SCSI_IO_PROTOCOL_EXEC_SCSI_COMMAND)(\r
d1f95000	213	IN EFI_SCSI_IO_PROTOCOL *This,\r
	214	IN OUT EFI_SCSI_IO_SCSI_REQUEST_PACKET *Packet,\r
	215	IN EFI_EVENT Event OPTIONAL\r
ed66e1bc	216	);\r
d1f95000	217	\r
44717a39	218	///\r
	219	/// Provides services to manage and communicate with SCSI devices.\r
	220	///\r
d1f95000	221	struct _EFI_SCSI_IO_PROTOCOL {\r
	222	EFI_SCSI_IO_PROTOCOL_GET_DEVICE_TYPE GetDeviceType;\r
	223	EFI_SCSI_IO_PROTOCOL_GET_DEVICE_LOCATION GetDeviceLocation;\r
	224	EFI_SCSI_IO_PROTOCOL_RESET_BUS ResetBus;\r
	225	EFI_SCSI_IO_PROTOCOL_RESET_DEVICE ResetDevice;\r
a02e796b	226	EFI_SCSI_IO_PROTOCOL_EXEC_SCSI_COMMAND ExecuteScsiCommand; \r
1f08a159	227	\r
	228	///\r
	229	/// Supplies the alignment requirement for any buffer used in a data transfer. \r
	230	/// IoAlign values of 0 and 1 mean that the buffer can be placed anywhere in memory. \r
	231	/// Otherwise, IoAlign must be a power of 2, and the requirement is that the \r
	232	/// start address of a buffer must be evenly divisible by IoAlign with no remainder.\r
	233	///\r
d1f95000	234	UINT32 IoAlign;\r
	235	};\r
	236	\r
	237	extern EFI_GUID gEfiScsiIoProtocolGuid;\r
	238	\r
	239	#endif\r