1 /** @file 2 EFI_SCSI_IO_PROTOCOL as defined in UEFI 2.0. 3 This protocol is used by code, typically drivers, running in the EFI boot 4 services environment to access SCSI devices. In particular, functions for 5 managing devices on SCSI buses are defined here. 6 7 Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR> 8 This program and the accompanying materials 9 are licensed and made available under the terms and conditions of the BSD License 10 which accompanies this distribution. The full text of the license may be found at 11 http://opensource.org/licenses/bsd-license.php 12 13 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 14 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 15 16 **/ 17 18 #ifndef __EFI_SCSI_IO_PROTOCOL_H__ 19 #define __EFI_SCSI_IO_PROTOCOL_H__ 20 21 #define EFI_SCSI_IO_PROTOCOL_GUID \ 22 { \ 23 0x932f47e6, 0x2362, 0x4002, {0x80, 0x3e, 0x3c, 0xd5, 0x4b, 0x13, 0x8f, 0x85 } \ 24 } 25 26 /// 27 /// Forward reference for pure ANSI compatability 28 /// 29 typedef struct _EFI_SCSI_IO_PROTOCOL EFI_SCSI_IO_PROTOCOL; 30 31 // 32 // SCSI Device type information, defined in the SCSI Primary Commands standard (e.g., SPC-4) 33 // 34 #define EFI_SCSI_IO_TYPE_DISK 0x00 ///< Disk device 35 #define EFI_SCSI_IO_TYPE_TAPE 0x01 ///< Tape device 36 #define EFI_SCSI_IO_TYPE_PRINTER 0x02 ///< Printer 37 #define EFI_SCSI_IO_TYPE_PROCESSOR 0x03 ///< Processor 38 #define EFI_SCSI_IO_TYPE_WORM 0x04 ///< Write-once read-multiple 39 #define EFI_SCSI_IO_TYPE_CDROM 0x05 ///< CD or DVD device 40 #define EFI_SCSI_IO_TYPE_SCANNER 0x06 ///< Scanner device 41 #define EFI_SCSI_IO_TYPE_OPTICAL 0x07 ///< Optical memory device 42 #define EFI_SCSI_IO_TYPE_MEDIUMCHANGER 0x08 ///< Medium Changer device 43 #define EFI_SCSI_IO_TYPE_COMMUNICATION 0x09 ///< Communications device 44 #define MFI_SCSI_IO_TYPE_A 0x0A ///< Obsolete 45 #define MFI_SCSI_IO_TYPE_B 0x0B ///< Obsolete 46 #define MFI_SCSI_IO_TYPE_RAID 0x0C ///< Storage array controller device (e.g., RAID) 47 #define MFI_SCSI_IO_TYPE_SES 0x0D ///< Enclosure services device 48 #define MFI_SCSI_IO_TYPE_RBC 0x0E ///< Simplified direct-access device (e.g., magnetic disk) 49 #define MFI_SCSI_IO_TYPE_OCRW 0x0F ///< Optical card reader/writer device 50 #define MFI_SCSI_IO_TYPE_BRIDGE 0x10 ///< Bridge Controller Commands 51 #define MFI_SCSI_IO_TYPE_OSD 0x11 ///< Object-based Storage Device 52 #define EFI_SCSI_IO_TYPE_RESERVED_LOW 0x12 ///< Reserved (low) 53 #define EFI_SCSI_IO_TYPE_RESERVED_HIGH 0x1E ///< Reserved (high) 54 #define EFI_SCSI_IO_TYPE_UNKNOWN 0x1F ///< Unknown no device type 55 56 // 57 // SCSI Data Direction definition 58 // 59 #define EFI_SCSI_IO_DATA_DIRECTION_READ 0 60 #define EFI_SCSI_IO_DATA_DIRECTION_WRITE 1 61 #define EFI_SCSI_IO_DATA_DIRECTION_BIDIRECTIONAL 2 62 63 // 64 // SCSI Host Adapter Status definition 65 // 66 #define EFI_SCSI_IO_STATUS_HOST_ADAPTER_OK 0x00 67 #define EFI_SCSI_IO_STATUS_HOST_ADAPTER_TIMEOUT_COMMAND 0x09 ///< timeout when processing the command 68 #define EFI_SCSI_IO_STATUS_HOST_ADAPTER_TIMEOUT 0x0b ///< timeout when waiting for the command processing 69 #define EFI_SCSI_IO_STATUS_HOST_ADAPTER_MESSAGE_REJECT 0x0d ///< a message reject was received when processing command 70 #define EFI_SCSI_IO_STATUS_HOST_ADAPTER_BUS_RESET 0x0e ///< a bus reset was detected 71 #define EFI_SCSI_IO_STATUS_HOST_ADAPTER_PARITY_ERROR 0x0f 72 #define EFI_SCSI_IO_STATUS_HOST_ADAPTER_REQUEST_SENSE_FAILED 0x10 ///< the adapter failed in issuing request sense command 73 #define EFI_SCSI_IO_STATUS_HOST_ADAPTER_SELECTION_TIMEOUT 0x11 ///< selection timeout 74 #define EFI_SCSI_IO_STATUS_HOST_ADAPTER_DATA_OVERRUN_UNDERRUN 0x12 ///< data overrun or data underrun 75 #define EFI_SCSI_IO_STATUS_HOST_ADAPTER_BUS_FREE 0x13 ///< Unexepected bus free 76 #define EFI_SCSI_IO_STATUS_HOST_ADAPTER_PHASE_ERROR 0x14 ///< Target bus phase sequence failure 77 #define EFI_SCSI_IO_STATUS_HOST_ADAPTER_OTHER 0x7f 78 79 80 // 81 // SCSI Target Status definition 82 // 83 #define EFI_SCSI_IO_STATUS_TARGET_GOOD 0x00 84 #define EFI_SCSI_IO_STATUS_TARGET_CHECK_CONDITION 0x02 ///< check condition 85 #define EFI_SCSI_IO_STATUS_TARGET_CONDITION_MET 0x04 ///< condition met 86 #define EFI_SCSI_IO_STATUS_TARGET_BUSY 0x08 ///< busy 87 #define EFI_SCSI_IO_STATUS_TARGET_INTERMEDIATE 0x10 ///< intermediate 88 #define EFI_SCSI_IO_STATUS_TARGET_INTERMEDIATE_CONDITION_MET 0x14 ///< intermediate-condition met 89 #define EFI_SCSI_IO_STATUS_TARGET_RESERVATION_CONFLICT 0x18 ///< reservation conflict 90 #define EFI_SCSI_IO_STATUS_TARGET_COMMOND_TERMINATED 0x22 ///< command terminated 91 #define EFI_SCSI_IO_STATUS_TARGET_QUEUE_FULL 0x28 ///< queue full 92 93 typedef struct { 94 /// 95 /// The timeout, in 100 ns units, to use for the execution of this SCSI 96 /// Request Packet. A Timeout value of 0 means that this function 97 /// will wait indefinitely for the SCSI Request Packet to execute. If 98 /// Timeout is greater than zero, then this function will return 99 /// EFI_TIMEOUT if the time required to execute the SCSI Request 100 /// Packet is greater than Timeout. 101 /// 102 UINT64 Timeout; 103 /// 104 /// A pointer to the data buffer to transfer between the SCSI 105 /// controller and the SCSI device for SCSI READ command 106 /// 107 VOID *InDataBuffer; 108 /// 109 /// A pointer to the data buffer to transfer between the SCSI 110 /// controller and the SCSI device for SCSI WRITE command. 111 /// 112 VOID *OutDataBuffer; 113 /// 114 /// A pointer to the sense data that was generated by the execution of 115 /// the SCSI Request Packet. 116 /// 117 VOID *SenseData; 118 /// 119 /// A pointer to buffer that contains the Command Data Block to 120 /// send to the SCSI device. 121 /// 122 VOID *Cdb; 123 /// 124 /// On Input, the size, in bytes, of InDataBuffer. On output, the 125 /// number of bytes transferred between the SCSI controller and the SCSI device. 126 /// 127 UINT32 InTransferLength; 128 /// 129 /// On Input, the size, in bytes of OutDataBuffer. On Output, the 130 /// Number of bytes transferred between SCSI Controller and the SCSI device. 131 /// 132 UINT32 OutTransferLength; 133 /// 134 /// The length, in bytes, of the buffer Cdb. The standard values are 135 /// 6, 10, 12, and 16, but other values are possible if a variable length CDB is used. 136 /// 137 UINT8 CdbLength; 138 /// 139 /// The direction of the data transfer. 0 for reads, 1 for writes. A 140 /// value of 2 is Reserved for Bi-Directional SCSI commands. 141 /// 142 UINT8 DataDirection; 143 /// 144 /// The status of the SCSI Host Controller that produces the SCSI 145 /// bus where the SCSI device attached when the SCSI Request 146 /// Packet was executed on the SCSI Controller. 147 /// 148 UINT8 HostAdapterStatus; 149 /// 150 /// The status returned by the SCSI device when the SCSI Request 151 /// Packet was executed. 152 /// 153 UINT8 TargetStatus; 154 /// 155 /// On input, the length in bytes of the SenseData buffer. On 156 /// output, the number of bytes written to the SenseData buffer. 157 /// 158 UINT8 SenseDataLength; 159 } EFI_SCSI_IO_SCSI_REQUEST_PACKET; 160 161 /** 162 Retrieves the device type information of the SCSI Controller. 163 164 @param This Protocol instance pointer. 165 @param DeviceType A pointer to the device type information 166 retrieved from the SCSI Controller. 167 168 @retval EFI_SUCCESS Retrieved the device type information successfully. 169 @retval EFI_INVALID_PARAMETER The DeviceType is NULL. 170 171 **/ 172 typedef 173 EFI_STATUS 174 (EFIAPI *EFI_SCSI_IO_PROTOCOL_GET_DEVICE_TYPE)( 175 IN EFI_SCSI_IO_PROTOCOL *This, 176 OUT UINT8 *DeviceType 177 ); 178 179 /** 180 Retrieves the device location in the SCSI channel. 181 182 @param This Protocol instance pointer. 183 @param Target A pointer to the Target ID of a SCSI device 184 on the SCSI channel. 185 @param Lun A pointer to the LUN of the SCSI device on 186 the SCSI channel. 187 188 @retval EFI_SUCCESS Retrieves the device location successfully. 189 @retval EFI_INVALID_PARAMETER The Target or Lun is NULL. 190 191 **/ 192 typedef 193 EFI_STATUS 194 (EFIAPI *EFI_SCSI_IO_PROTOCOL_GET_DEVICE_LOCATION)( 195 IN EFI_SCSI_IO_PROTOCOL *This, 196 IN OUT UINT8 **Target, 197 OUT UINT64 *Lun 198 ); 199 200 /** 201 Resets the SCSI Bus that the SCSI Controller is attached to. 202 203 @param This Protocol instance pointer. 204 205 @retval EFI_SUCCESS The SCSI bus is reset successfully. 206 @retval EFI_DEVICE_ERROR Errors encountered when resetting the SCSI bus. 207 @retval EFI_UNSUPPORTED The bus reset operation is not supported by the 208 SCSI Host Controller. 209 @retval EFI_TIMEOUT A timeout occurred while attempting to reset 210 the SCSI bus. 211 212 **/ 213 typedef 214 EFI_STATUS 215 (EFIAPI *EFI_SCSI_IO_PROTOCOL_RESET_BUS)( 216 IN EFI_SCSI_IO_PROTOCOL *This 217 ); 218 219 /** 220 Resets the SCSI Controller that the device handle specifies. 221 222 @param This Protocol instance pointer. 223 224 @retval EFI_SUCCESS Reset the SCSI controller successfully. 225 @retval EFI_DEVICE_ERROR Errors were encountered when resetting the 226 SCSI Controller. 227 @retval EFI_UNSUPPORTED The SCSI bus does not support a device 228 reset operation. 229 @retval EFI_TIMEOUT A timeout occurred while attempting to 230 reset the SCSI Controller. 231 232 **/ 233 typedef 234 EFI_STATUS 235 (EFIAPI *EFI_SCSI_IO_PROTOCOL_RESET_DEVICE)( 236 IN EFI_SCSI_IO_PROTOCOL *This 237 ); 238 239 240 /** 241 Sends a SCSI Request Packet to the SCSI Controller for execution. 242 243 @param This Protocol instance pointer. 244 @param Packet The SCSI request packet to send to the SCSI 245 Controller specified by the device handle. 246 @param Event If the SCSI bus to which the SCSI device is attached 247 does not support non-blocking I/O, then Event is 248 ignored, and blocking I/O is performed. 249 If Event is NULL, then blocking I/O is performed. 250 If Event is not NULL and non-blocking I/O is 251 supported, then non-blocking I/O is performed, 252 and Event will be signaled when the SCSI Request 253 Packet completes. 254 255 @retval EFI_SUCCESS The SCSI Request Packet was sent by the host 256 successfully, and TransferLength bytes were 257 transferred to/from DataBuffer. See 258 HostAdapterStatus, TargetStatus, 259 SenseDataLength, and SenseData in that order 260 for additional status information. 261 @retval EFI_BAD_BUFFER_SIZE The SCSI Request Packet was executed, 262 but the entire DataBuffer could not be transferred. 263 The actual number of bytes transferred is returned 264 in TransferLength. See HostAdapterStatus, 265 TargetStatus, SenseDataLength, and SenseData in 266 that order for additional status information. 267 @retval EFI_NOT_READY The SCSI Request Packet could not be sent because 268 there are too many SCSI Command Packets already 269 queued.The caller may retry again later. 270 @retval EFI_DEVICE_ERROR A device error occurred while attempting to send 271 the SCSI Request Packet. See HostAdapterStatus, 272 TargetStatus, SenseDataLength, and SenseData in 273 that order for additional status information. 274 @retval EFI_INVALID_PARAMETER The contents of CommandPacket are invalid. 275 The SCSI Request Packet was not sent, so no 276 additional status information is available. 277 @retval EFI_UNSUPPORTED The command described by the SCSI Request Packet 278 is not supported by the SCSI initiator(i.e., SCSI 279 Host Controller). The SCSI Request Packet was not 280 sent, so no additional status information is 281 available. 282 @retval EFI_TIMEOUT A timeout occurred while waiting for the SCSI 283 Request Packet to execute. See HostAdapterStatus, 284 TargetStatus, SenseDataLength, and SenseData in 285 that order for additional status information. 286 287 **/ 288 typedef 289 EFI_STATUS 290 (EFIAPI *EFI_SCSI_IO_PROTOCOL_EXEC_SCSI_COMMAND)( 291 IN EFI_SCSI_IO_PROTOCOL *This, 292 IN OUT EFI_SCSI_IO_SCSI_REQUEST_PACKET *Packet, 293 IN EFI_EVENT Event OPTIONAL 294 ); 295 296 /// 297 /// Provides services to manage and communicate with SCSI devices. 298 /// 299 struct _EFI_SCSI_IO_PROTOCOL { 300 EFI_SCSI_IO_PROTOCOL_GET_DEVICE_TYPE GetDeviceType; 301 EFI_SCSI_IO_PROTOCOL_GET_DEVICE_LOCATION GetDeviceLocation; 302 EFI_SCSI_IO_PROTOCOL_RESET_BUS ResetBus; 303 EFI_SCSI_IO_PROTOCOL_RESET_DEVICE ResetDevice; 304 EFI_SCSI_IO_PROTOCOL_EXEC_SCSI_COMMAND ExecuteScsiCommand; 305 306 /// 307 /// Supplies the alignment requirement for any buffer used in a data transfer. 308 /// IoAlign values of 0 and 1 mean that the buffer can be placed anywhere in memory. 309 /// Otherwise, IoAlign must be a power of 2, and the requirement is that the 310 /// start address of a buffer must be evenly divisible by IoAlign with no remainder. 311 /// 312 UINT32 IoAlign; 313 }; 314 315 extern EFI_GUID gEfiScsiIoProtocolGuid; 316 317 #endif 318