1/* 2 * zfcp device driver 3 * 4 * Interface to the FSF support functions. 5 * 6 * Copyright IBM Corporation 2002, 2010 7 */ 8 9#ifndef FSF_H 10#define FSF_H 11 12#include <linux/pfn.h> 13#include <linux/scatterlist.h> 14#include <scsi/libfc.h> 15 16#define FSF_QTCB_CURRENT_VERSION 0x00000001 17 18/* FSF commands */ 19#define FSF_QTCB_FCP_CMND 0x00000001 20#define FSF_QTCB_ABORT_FCP_CMND 0x00000002 21#define FSF_QTCB_OPEN_PORT_WITH_DID 0x00000005 22#define FSF_QTCB_OPEN_LUN 0x00000006 23#define FSF_QTCB_CLOSE_LUN 0x00000007 24#define FSF_QTCB_CLOSE_PORT 0x00000008 25#define FSF_QTCB_CLOSE_PHYSICAL_PORT 0x00000009 26#define FSF_QTCB_SEND_ELS 0x0000000B 27#define FSF_QTCB_SEND_GENERIC 0x0000000C 28#define FSF_QTCB_EXCHANGE_CONFIG_DATA 0x0000000D 29#define FSF_QTCB_EXCHANGE_PORT_DATA 0x0000000E 30#define FSF_QTCB_DOWNLOAD_CONTROL_FILE 0x00000012 31#define FSF_QTCB_UPLOAD_CONTROL_FILE 0x00000013 32 33/* FSF QTCB types */ 34#define FSF_IO_COMMAND 0x00000001 35#define FSF_SUPPORT_COMMAND 0x00000002 36#define FSF_CONFIG_COMMAND 0x00000003 37#define FSF_PORT_COMMAND 0x00000004 38 39/* FSF control file upload/download operations' subtype and options */ 40#define FSF_CFDC_OPERATION_SUBTYPE 0x00020001 41#define FSF_CFDC_OPTION_NORMAL_MODE 0x00000000 42#define FSF_CFDC_OPTION_FORCE 0x00000001 43#define FSF_CFDC_OPTION_FULL_ACCESS 0x00000002 44#define FSF_CFDC_OPTION_RESTRICTED_ACCESS 0x00000004 45 46/* FSF protocol states */ 47#define FSF_PROT_GOOD 0x00000001 48#define FSF_PROT_QTCB_VERSION_ERROR 0x00000010 49#define FSF_PROT_SEQ_NUMB_ERROR 0x00000020 50#define FSF_PROT_UNSUPP_QTCB_TYPE 0x00000040 51#define FSF_PROT_HOST_CONNECTION_INITIALIZING 0x00000080 52#define FSF_PROT_FSF_STATUS_PRESENTED 0x00000100 53#define FSF_PROT_DUPLICATE_REQUEST_ID 0x00000200 54#define FSF_PROT_LINK_DOWN 0x00000400 55#define FSF_PROT_REEST_QUEUE 0x00000800 56#define FSF_PROT_ERROR_STATE 0x01000000 57 58/* FSF states */ 59#define FSF_GOOD 0x00000000 60#define FSF_PORT_ALREADY_OPEN 0x00000001 61#define FSF_LUN_ALREADY_OPEN 0x00000002 62#define FSF_PORT_HANDLE_NOT_VALID 0x00000003 63#define FSF_LUN_HANDLE_NOT_VALID 0x00000004 64#define FSF_HANDLE_MISMATCH 0x00000005 65#define FSF_SERVICE_CLASS_NOT_SUPPORTED 0x00000006 66#define FSF_FCPLUN_NOT_VALID 0x00000009 67#define FSF_ACCESS_DENIED 0x00000010 68#define FSF_LUN_SHARING_VIOLATION 0x00000012 69#define FSF_FCP_COMMAND_DOES_NOT_EXIST 0x00000022 70#define FSF_DIRECTION_INDICATOR_NOT_VALID 0x00000030 71#define FSF_CMND_LENGTH_NOT_VALID 0x00000033 72#define FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED 0x00000040 73#define FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED 0x00000041 74#define FSF_ELS_COMMAND_REJECTED 0x00000050 75#define FSF_GENERIC_COMMAND_REJECTED 0x00000051 76#define FSF_PORT_BOXED 0x00000059 77#define FSF_LUN_BOXED 0x0000005A 78#define FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE 0x0000005B 79#define FSF_PAYLOAD_SIZE_MISMATCH 0x00000060 80#define FSF_REQUEST_SIZE_TOO_LARGE 0x00000061 81#define FSF_RESPONSE_SIZE_TOO_LARGE 0x00000062 82#define FSF_SBAL_MISMATCH 0x00000063 83#define FSF_INCONSISTENT_PROT_DATA 0x00000070 84#define FSF_INVALID_PROT_PARM 0x00000071 85#define FSF_BLOCK_GUARD_CHECK_FAILURE 0x00000081 86#define FSF_APP_TAG_CHECK_FAILURE 0x00000082 87#define FSF_REF_TAG_CHECK_FAILURE 0x00000083 88#define FSF_ADAPTER_STATUS_AVAILABLE 0x000000AD 89#define FSF_UNKNOWN_COMMAND 0x000000E2 90#define FSF_UNKNOWN_OP_SUBTYPE 0x000000E3 91#define FSF_INVALID_COMMAND_OPTION 0x000000E5 92 93#define FSF_PROT_STATUS_QUAL_SIZE 16 94#define FSF_STATUS_QUALIFIER_SIZE 16 95 96/* FSF status qualifier, recommendations */ 97#define FSF_SQ_NO_RECOM 0x00 98#define FSF_SQ_FCP_RSP_AVAILABLE 0x01 99#define FSF_SQ_RETRY_IF_POSSIBLE 0x02 100#define FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED 0x03 101#define FSF_SQ_INVOKE_LINK_TEST_PROCEDURE 0x04 102#define FSF_SQ_COMMAND_ABORTED 0x06 103#define FSF_SQ_NO_RETRY_POSSIBLE 0x07 104 105/* FSF status qualifier (most significant 4 bytes), local link down */ 106#define FSF_PSQ_LINK_NO_LIGHT 0x00000004 107#define FSF_PSQ_LINK_WRAP_PLUG 0x00000008 108#define FSF_PSQ_LINK_NO_FCP 0x00000010 109#define FSF_PSQ_LINK_FIRMWARE_UPDATE 0x00000020 110#define FSF_PSQ_LINK_INVALID_WWPN 0x00000100 111#define FSF_PSQ_LINK_NO_NPIV_SUPPORT 0x00000200 112#define FSF_PSQ_LINK_NO_FCP_RESOURCES 0x00000400 113#define FSF_PSQ_LINK_NO_FABRIC_RESOURCES 0x00000800 114#define FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE 0x00001000 115#define FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED 0x00002000 116#define FSF_PSQ_LINK_MODE_TABLE_CURRUPTED 0x00004000 117#define FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT 0x00008000 118 119/* payload size in status read buffer */ 120#define FSF_STATUS_READ_PAYLOAD_SIZE 4032 121 122/* number of status read buffers that should be sent by ULP */ 123#define FSF_STATUS_READS_RECOM 16 124 125/* status types in status read buffer */ 126#define FSF_STATUS_READ_PORT_CLOSED 0x00000001 127#define FSF_STATUS_READ_INCOMING_ELS 0x00000002 128#define FSF_STATUS_READ_SENSE_DATA_AVAIL 0x00000003 129#define FSF_STATUS_READ_BIT_ERROR_THRESHOLD 0x00000004 130#define FSF_STATUS_READ_LINK_DOWN 0x00000005 131#define FSF_STATUS_READ_LINK_UP 0x00000006 132#define FSF_STATUS_READ_NOTIFICATION_LOST 0x00000009 133#define FSF_STATUS_READ_CFDC_UPDATED 0x0000000A 134#define FSF_STATUS_READ_FEATURE_UPDATE_ALERT 0x0000000C 135 136/* status subtypes for link down */ 137#define FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK 0x00000000 138#define FSF_STATUS_READ_SUB_FDISC_FAILED 0x00000001 139#define FSF_STATUS_READ_SUB_FIRMWARE_UPDATE 0x00000002 140 141/* status subtypes for unsolicited status notification lost */ 142#define FSF_STATUS_READ_SUB_INCOMING_ELS 0x00000001 143#define FSF_STATUS_READ_SUB_ACT_UPDATED 0x00000020 144 145/* topologie that is detected by the adapter */ 146#define FSF_TOPO_P2P 0x00000001 147#define FSF_TOPO_FABRIC 0x00000002 148#define FSF_TOPO_AL 0x00000003 149 150/* data direction for FCP commands */ 151#define FSF_DATADIR_WRITE 0x00000001 152#define FSF_DATADIR_READ 0x00000002 153#define FSF_DATADIR_CMND 0x00000004 154#define FSF_DATADIR_DIF_WRITE_INSERT 0x00000009 155#define FSF_DATADIR_DIF_READ_STRIP 0x0000000a 156#define FSF_DATADIR_DIF_WRITE_CONVERT 0x0000000b 157#define FSF_DATADIR_DIF_READ_CONVERT 0X0000000c 158 159/* data protection control flags */ 160#define FSF_APP_TAG_CHECK_ENABLE 0x10 161 162/* fc service class */ 163#define FSF_CLASS_3 0x00000003 164 165/* logging space behind QTCB */ 166#define FSF_QTCB_LOG_SIZE 1024 167 168/* channel features */ 169#define FSF_FEATURE_CFDC 0x00000002 170#define FSF_FEATURE_LUN_SHARING 0x00000004 171#define FSF_FEATURE_NOTIFICATION_LOST 0x00000008 172#define FSF_FEATURE_HBAAPI_MANAGEMENT 0x00000010 173#define FSF_FEATURE_ELS_CT_CHAINED_SBALS 0x00000020 174#define FSF_FEATURE_UPDATE_ALERT 0x00000100 175#define FSF_FEATURE_MEASUREMENT_DATA 0x00000200 176#define FSF_FEATURE_DIF_PROT_TYPE1 0x00010000 177#define FSF_FEATURE_DIX_PROT_TCPIP 0x00020000 178 179/* host connection features */ 180#define FSF_FEATURE_NPIV_MODE 0x00000001 181 182/* option */ 183#define FSF_OPEN_LUN_SUPPRESS_BOXING 0x00000001 184 185/* open LUN access flags*/ 186#define FSF_UNIT_ACCESS_EXCLUSIVE 0x02000000 187#define FSF_UNIT_ACCESS_OUTBOUND_TRANSFER 0x10000000 188 189/* FSF interface for CFDC */ 190#define ZFCP_CFDC_MAX_SIZE 127 * 1024 191#define ZFCP_CFDC_PAGES PFN_UP(ZFCP_CFDC_MAX_SIZE) 192 193struct zfcp_fsf_cfdc { 194 struct scatterlist sg[ZFCP_CFDC_PAGES]; 195 u32 command; 196 u32 option; 197}; 198 199struct fsf_queue_designator { 200 u8 cssid; 201 u8 chpid; 202 u8 hla; 203 u8 ua; 204 u32 res1; 205} __attribute__ ((packed)); 206 207struct fsf_bit_error_payload { 208 u32 res1; 209 u32 link_failure_error_count; 210 u32 loss_of_sync_error_count; 211 u32 loss_of_signal_error_count; 212 u32 primitive_sequence_error_count; 213 u32 invalid_transmission_word_error_count; 214 u32 crc_error_count; 215 u32 primitive_sequence_event_timeout_count; 216 u32 elastic_buffer_overrun_error_count; 217 u32 fcal_arbitration_timeout_count; 218 u32 advertised_receive_b2b_credit; 219 u32 current_receive_b2b_credit; 220 u32 advertised_transmit_b2b_credit; 221 u32 current_transmit_b2b_credit; 222} __attribute__ ((packed)); 223 224struct fsf_link_down_info { 225 u32 error_code; 226 u32 res1; 227 u8 res2[2]; 228 u8 primary_status; 229 u8 ioerr_code; 230 u8 action_code; 231 u8 reason_code; 232 u8 explanation_code; 233 u8 vendor_specific_code; 234} __attribute__ ((packed)); 235 236struct fsf_status_read_buffer { 237 u32 status_type; 238 u32 status_subtype; 239 u32 length; 240 u32 res1; 241 struct fsf_queue_designator queue_designator; 242 u8 res2; 243 u8 d_id[3]; 244 u32 class; 245 u64 fcp_lun; 246 u8 res3[24]; 247 union { 248 u8 data[FSF_STATUS_READ_PAYLOAD_SIZE]; 249 u32 word[FSF_STATUS_READ_PAYLOAD_SIZE/sizeof(u32)]; 250 struct fsf_link_down_info link_down_info; 251 struct fsf_bit_error_payload bit_error; 252 } payload; 253} __attribute__ ((packed)); 254 255struct fsf_qual_version_error { 256 u32 fsf_version; 257 u32 res1[3]; 258} __attribute__ ((packed)); 259 260struct fsf_qual_sequence_error { 261 u32 exp_req_seq_no; 262 u32 res1[3]; 263} __attribute__ ((packed)); 264 265struct fsf_qual_latency_info { 266 u32 channel_lat; 267 u32 fabric_lat; 268 u8 res1[8]; 269} __attribute__ ((packed)); 270 271union fsf_prot_status_qual { 272 u32 word[FSF_PROT_STATUS_QUAL_SIZE / sizeof(u32)]; 273 u64 doubleword[FSF_PROT_STATUS_QUAL_SIZE / sizeof(u64)]; 274 struct fsf_qual_version_error version_error; 275 struct fsf_qual_sequence_error sequence_error; 276 struct fsf_link_down_info link_down_info; 277 struct fsf_qual_latency_info latency_info; 278} __attribute__ ((packed)); 279 280struct fsf_qtcb_prefix { 281 u64 req_id; 282 u32 qtcb_version; 283 u32 ulp_info; 284 u32 qtcb_type; 285 u32 req_seq_no; 286 u32 prot_status; 287 union fsf_prot_status_qual prot_status_qual; 288 u8 res1[20]; 289} __attribute__ ((packed)); 290 291struct fsf_statistics_info { 292 u64 input_req; 293 u64 output_req; 294 u64 control_req; 295 u64 input_mb; 296 u64 output_mb; 297 u64 seconds_act; 298} __attribute__ ((packed)); 299 300union fsf_status_qual { 301 u8 byte[FSF_STATUS_QUALIFIER_SIZE]; 302 u16 halfword[FSF_STATUS_QUALIFIER_SIZE / sizeof (u16)]; 303 u32 word[FSF_STATUS_QUALIFIER_SIZE / sizeof (u32)]; 304 u64 doubleword[FSF_STATUS_QUALIFIER_SIZE / sizeof(u64)]; 305 struct fsf_queue_designator fsf_queue_designator; 306 struct fsf_link_down_info link_down_info; 307} __attribute__ ((packed)); 308 309struct fsf_qtcb_header { 310 u64 req_handle; 311 u32 fsf_command; 312 u32 res1; 313 u32 port_handle; 314 u32 lun_handle; 315 u32 res2; 316 u32 fsf_status; 317 union fsf_status_qual fsf_status_qual; 318 u8 res3[28]; 319 u16 log_start; 320 u16 log_length; 321 u8 res4[16]; 322} __attribute__ ((packed)); 323 324#define FSF_PLOGI_MIN_LEN 112 325 326#define FSF_FCP_CMND_SIZE 288 327#define FSF_FCP_RSP_SIZE 128 328 329struct fsf_qtcb_bottom_io { 330 u32 data_direction; 331 u32 service_class; 332 u8 res1; 333 u8 data_prot_flags; 334 u16 app_tag_value; 335 u32 ref_tag_value; 336 u32 fcp_cmnd_length; 337 u32 data_block_length; 338 u32 prot_data_length; 339 u8 res2[4]; 340 u8 fcp_cmnd[FSF_FCP_CMND_SIZE]; 341 u8 fcp_rsp[FSF_FCP_RSP_SIZE]; 342 u8 res3[64]; 343} __attribute__ ((packed)); 344 345struct fsf_qtcb_bottom_support { 346 u32 operation_subtype; 347 u8 res1[13]; 348 u8 d_id[3]; 349 u32 option; 350 u64 fcp_lun; 351 u64 res2; 352 u64 req_handle; 353 u32 service_class; 354 u8 res3[3]; 355 u8 timeout; 356 u32 lun_access_info; 357 u8 res4[180]; 358 u32 els1_length; 359 u32 els2_length; 360 u32 req_buf_length; 361 u32 resp_buf_length; 362 u8 els[256]; 363} __attribute__ ((packed)); 364 365#define ZFCP_FSF_TIMER_INT_MASK 0x3FFF 366 367struct fsf_qtcb_bottom_config { 368 u32 lic_version; 369 u32 feature_selection; 370 u32 high_qtcb_version; 371 u32 low_qtcb_version; 372 u32 max_qtcb_size; 373 u32 max_data_transfer_size; 374 u32 adapter_features; 375 u32 connection_features; 376 u32 fc_topology; 377 u32 fc_link_speed; 378 u32 adapter_type; 379 u8 res0; 380 u8 peer_d_id[3]; 381 u16 status_read_buf_num; 382 u16 timer_interval; 383 u8 res2[9]; 384 u8 s_id[3]; 385 u8 nport_serv_param[128]; 386 u8 res3[8]; 387 u32 adapter_ports; 388 u32 hardware_version; 389 u8 serial_number[32]; 390 u8 plogi_payload[112]; 391 struct fsf_statistics_info stat_info; 392 u8 res4[112]; 393} __attribute__ ((packed)); 394 395struct fsf_qtcb_bottom_port { 396 u64 wwpn; 397 u32 fc_port_id; 398 u32 port_type; 399 u32 port_state; 400 u32 class_of_service; /* should be 0x00000006 for class 2 and 3 */ 401 u8 supported_fc4_types[32]; /* should be 0x00000100 for scsi fcp */ 402 u8 active_fc4_types[32]; 403 u32 supported_speed; /* 0x0001 for 1 GBit/s or 0x0002 for 2 GBit/s */ 404 u32 maximum_frame_size; /* fixed value of 2112 */ 405 u64 seconds_since_last_reset; 406 u64 tx_frames; 407 u64 tx_words; 408 u64 rx_frames; 409 u64 rx_words; 410 u64 lip; /* 0 */ 411 u64 nos; /* currently 0 */ 412 u64 error_frames; /* currently 0 */ 413 u64 dumped_frames; /* currently 0 */ 414 u64 link_failure; 415 u64 loss_of_sync; 416 u64 loss_of_signal; 417 u64 psp_error_counts; 418 u64 invalid_tx_words; 419 u64 invalid_crcs; 420 u64 input_requests; 421 u64 output_requests; 422 u64 control_requests; 423 u64 input_mb; /* where 1 MByte == 1.000.000 Bytes */ 424 u64 output_mb; /* where 1 MByte == 1.000.000 Bytes */ 425 u8 cp_util; 426 u8 cb_util; 427 u8 a_util; 428 u8 res2[253]; 429} __attribute__ ((packed)); 430 431union fsf_qtcb_bottom { 432 struct fsf_qtcb_bottom_io io; 433 struct fsf_qtcb_bottom_support support; 434 struct fsf_qtcb_bottom_config config; 435 struct fsf_qtcb_bottom_port port; 436}; 437 438struct fsf_qtcb { 439 struct fsf_qtcb_prefix prefix; 440 struct fsf_qtcb_header header; 441 union fsf_qtcb_bottom bottom; 442 u8 log[FSF_QTCB_LOG_SIZE]; 443} __attribute__ ((packed)); 444 445struct zfcp_blk_drv_data { 446#define ZFCP_BLK_DRV_DATA_MAGIC 0x1 447 u32 magic; 448#define ZFCP_BLK_LAT_VALID 0x1 449#define ZFCP_BLK_REQ_ERROR 0x2 450 u16 flags; 451 u8 inb_usage; 452 u8 outb_usage; 453 u64 channel_lat; 454 u64 fabric_lat; 455} __attribute__ ((packed)); 456 457/** 458 * struct zfcp_fsf_ct_els - zfcp data for ct or els request 459 * @req: scatter-gather list for request 460 * @resp: scatter-gather list for response 461 * @handler: handler function (called for response to the request) 462 * @handler_data: data passed to handler function 463 * @port: Optional pointer to port for zfcp internal ELS (only test link ADISC) 464 * @status: used to pass error status to calling function 465 */ 466struct zfcp_fsf_ct_els { 467 struct scatterlist *req; 468 struct scatterlist *resp; 469 void (*handler)(void *); 470 void *handler_data; 471 struct zfcp_port *port; 472 int status; 473}; 474 475#endif /* FSF_H */ 476