drivers/s390/scsi/zfcp_fsf.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * zfcp device driver
   4  *
   5  * Interface to the FSF support functions.
   6  *
   7  * Copyright IBM Corp. 2002, 2020
   8  */
   9
  10 #ifndef FSF_H
  11 #define FSF_H
  12
  13 #include <linux/pfn.h>
  14 #include <linux/scatterlist.h>
  15 #include <scsi/libfc.h>
  16
  17 #define FSF_QTCB_CURRENT_VERSION                0x00000001
  18
  19 /* FSF commands */
  20 #define FSF_QTCB_FCP_CMND                       0x00000001
  21 #define FSF_QTCB_ABORT_FCP_CMND                 0x00000002
  22 #define FSF_QTCB_OPEN_PORT_WITH_DID             0x00000005
  23 #define FSF_QTCB_OPEN_LUN                       0x00000006
  24 #define FSF_QTCB_CLOSE_LUN                      0x00000007
  25 #define FSF_QTCB_CLOSE_PORT                     0x00000008
  26 #define FSF_QTCB_CLOSE_PHYSICAL_PORT            0x00000009
  27 #define FSF_QTCB_SEND_ELS                       0x0000000B
  28 #define FSF_QTCB_SEND_GENERIC                   0x0000000C
  29 #define FSF_QTCB_EXCHANGE_CONFIG_DATA           0x0000000D
  30 #define FSF_QTCB_EXCHANGE_PORT_DATA             0x0000000E
  31 #define FSF_QTCB_DOWNLOAD_CONTROL_FILE          0x00000012
  32 #define FSF_QTCB_UPLOAD_CONTROL_FILE            0x00000013
  33
  34 /* FSF QTCB types */
  35 #define FSF_IO_COMMAND                          0x00000001
  36 #define FSF_SUPPORT_COMMAND                     0x00000002
  37 #define FSF_CONFIG_COMMAND                      0x00000003
  38 #define FSF_PORT_COMMAND                        0x00000004
  39
  40 /* FSF protocol states */
  41 #define FSF_PROT_GOOD                           0x00000001
  42 #define FSF_PROT_QTCB_VERSION_ERROR             0x00000010
  43 #define FSF_PROT_SEQ_NUMB_ERROR                 0x00000020
  44 #define FSF_PROT_UNSUPP_QTCB_TYPE               0x00000040
  45 #define FSF_PROT_HOST_CONNECTION_INITIALIZING   0x00000080
  46 #define FSF_PROT_FSF_STATUS_PRESENTED           0x00000100
  47 #define FSF_PROT_DUPLICATE_REQUEST_ID           0x00000200
  48 #define FSF_PROT_LINK_DOWN                      0x00000400
  49 #define FSF_PROT_REEST_QUEUE                    0x00000800
  50 #define FSF_PROT_ERROR_STATE                    0x01000000
  51
  52 /* FSF states */
  53 #define FSF_GOOD                                0x00000000
  54 #define FSF_PORT_ALREADY_OPEN                   0x00000001
  55 #define FSF_LUN_ALREADY_OPEN                    0x00000002
  56 #define FSF_PORT_HANDLE_NOT_VALID               0x00000003
  57 #define FSF_LUN_HANDLE_NOT_VALID                0x00000004
  58 #define FSF_HANDLE_MISMATCH                     0x00000005
  59 #define FSF_SERVICE_CLASS_NOT_SUPPORTED         0x00000006
  60 #define FSF_FCPLUN_NOT_VALID                    0x00000009
  61 #define FSF_LUN_SHARING_VIOLATION               0x00000012
  62 #define FSF_FCP_COMMAND_DOES_NOT_EXIST          0x00000022
  63 #define FSF_DIRECTION_INDICATOR_NOT_VALID       0x00000030
  64 #define FSF_CMND_LENGTH_NOT_VALID               0x00000033
  65 #define FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED    0x00000040
  66 #define FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED     0x00000041
  67 #define FSF_ELS_COMMAND_REJECTED                0x00000050
  68 #define FSF_GENERIC_COMMAND_REJECTED            0x00000051
  69 #define FSF_PORT_BOXED                          0x00000059
  70 #define FSF_LUN_BOXED                           0x0000005A
  71 #define FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE     0x0000005B
  72 #define FSF_PAYLOAD_SIZE_MISMATCH               0x00000060
  73 #define FSF_REQUEST_SIZE_TOO_LARGE              0x00000061
  74 #define FSF_RESPONSE_SIZE_TOO_LARGE             0x00000062
  75 #define FSF_SBAL_MISMATCH                       0x00000063
  76 #define FSF_INCONSISTENT_PROT_DATA              0x00000070
  77 #define FSF_INVALID_PROT_PARM                   0x00000071
  78 #define FSF_BLOCK_GUARD_CHECK_FAILURE           0x00000081
  79 #define FSF_APP_TAG_CHECK_FAILURE               0x00000082
  80 #define FSF_REF_TAG_CHECK_FAILURE               0x00000083
  81 #define FSF_SECURITY_ERROR                      0x00000090
  82 #define FSF_ADAPTER_STATUS_AVAILABLE            0x000000AD
  83 #define FSF_FCP_RSP_AVAILABLE                   0x000000AF
  84 #define FSF_UNKNOWN_COMMAND                     0x000000E2
  85 #define FSF_UNKNOWN_OP_SUBTYPE                  0x000000E3
  86 #define FSF_INVALID_COMMAND_OPTION              0x000000E5
  87
  88 #define FSF_PROT_STATUS_QUAL_SIZE               16
  89 #define FSF_STATUS_QUALIFIER_SIZE               16
  90
  91 /* FSF status qualifier, recommendations */
  92 #define FSF_SQ_NO_RECOM                         0x00
  93 #define FSF_SQ_FCP_RSP_AVAILABLE                0x01
  94 #define FSF_SQ_RETRY_IF_POSSIBLE                0x02
  95 #define FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED       0x03
  96 #define FSF_SQ_INVOKE_LINK_TEST_PROCEDURE       0x04
  97 #define FSF_SQ_COMMAND_ABORTED                  0x06
  98 #define FSF_SQ_NO_RETRY_POSSIBLE                0x07
  99
 100 /* FSF status qualifier (most significant 4 bytes), local link down */
 101 #define FSF_PSQ_LINK_NO_LIGHT                   0x00000004
 102 #define FSF_PSQ_LINK_WRAP_PLUG                  0x00000008
 103 #define FSF_PSQ_LINK_NO_FCP                     0x00000010
 104 #define FSF_PSQ_LINK_FIRMWARE_UPDATE            0x00000020
 105 #define FSF_PSQ_LINK_INVALID_WWPN               0x00000100
 106 #define FSF_PSQ_LINK_NO_NPIV_SUPPORT            0x00000200
 107 #define FSF_PSQ_LINK_NO_FCP_RESOURCES           0x00000400
 108 #define FSF_PSQ_LINK_NO_FABRIC_RESOURCES        0x00000800
 109 #define FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE        0x00001000
 110 #define FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED  0x00002000
 111 #define FSF_PSQ_LINK_MODE_TABLE_CURRUPTED       0x00004000
 112 #define FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT         0x00008000
 113
 114 /* FSF status qualifier, security error */
 115 #define FSF_SQ_SECURITY_REQUIRED                0x00000001
 116 #define FSF_SQ_SECURITY_TIMEOUT                 0x00000002
 117 #define FSF_SQ_SECURITY_KM_UNAVAILABLE          0x00000003
 118 #define FSF_SQ_SECURITY_RKM_UNAVAILABLE         0x00000004
 119 #define FSF_SQ_SECURITY_AUTH_FAILURE            0x00000005
 120 #define FSF_SQ_SECURITY_ENC_FAILURE             0x00000010
 121
 122 /* payload size in status read buffer */
 123 #define FSF_STATUS_READ_PAYLOAD_SIZE            4032
 124
 125 /* number of status read buffers that should be sent by ULP */
 126 #define FSF_STATUS_READS_RECOM                  16
 127
 128 /* status types in status read buffer */
 129 #define FSF_STATUS_READ_PORT_CLOSED             0x00000001
 130 #define FSF_STATUS_READ_INCOMING_ELS            0x00000002
 131 #define FSF_STATUS_READ_SENSE_DATA_AVAIL        0x00000003
 132 #define FSF_STATUS_READ_BIT_ERROR_THRESHOLD     0x00000004
 133 #define FSF_STATUS_READ_LINK_DOWN               0x00000005
 134 #define FSF_STATUS_READ_LINK_UP                 0x00000006
 135 #define FSF_STATUS_READ_NOTIFICATION_LOST       0x00000009
 136 #define FSF_STATUS_READ_FEATURE_UPDATE_ALERT    0x0000000C
 137 #define FSF_STATUS_READ_VERSION_CHANGE          0x0000000D
 138
 139 /* status subtypes for link down */
 140 #define FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK    0x00000000
 141 #define FSF_STATUS_READ_SUB_FDISC_FAILED        0x00000001
 142 #define FSF_STATUS_READ_SUB_FIRMWARE_UPDATE     0x00000002
 143
 144 /* status subtypes for unsolicited status notification lost */
 145 #define FSF_STATUS_READ_SUB_INCOMING_ELS        0x00000001
 146 #define FSF_STATUS_READ_SUB_VERSION_CHANGE      0x00000100
 147
 148 /* status subtypes for version change */
 149 #define FSF_STATUS_READ_SUB_LIC_CHANGE          0x00000001
 150
 151 /* topologie that is detected by the adapter */
 152 #define FSF_TOPO_P2P                            0x00000001
 153 #define FSF_TOPO_FABRIC                         0x00000002
 154 #define FSF_TOPO_AL                             0x00000003
 155
 156 /* data direction for FCP commands */
 157 #define FSF_DATADIR_WRITE                       0x00000001
 158 #define FSF_DATADIR_READ                        0x00000002
 159 #define FSF_DATADIR_CMND                        0x00000004
 160 #define FSF_DATADIR_DIF_WRITE_INSERT            0x00000009
 161 #define FSF_DATADIR_DIF_READ_STRIP              0x0000000a
 162 #define FSF_DATADIR_DIF_WRITE_CONVERT           0x0000000b
 163 #define FSF_DATADIR_DIF_READ_CONVERT            0X0000000c
 164
 165 /* data protection control flags */
 166 #define FSF_APP_TAG_CHECK_ENABLE                0x10
 167
 168 /* fc service class */
 169 #define FSF_CLASS_3                             0x00000003
 170
 171 /* logging space behind QTCB */
 172 #define FSF_QTCB_LOG_SIZE                       1024
 173
 174 /* channel features */
 175 #define FSF_FEATURE_NOTIFICATION_LOST           0x00000008
 176 #define FSF_FEATURE_HBAAPI_MANAGEMENT           0x00000010
 177 #define FSF_FEATURE_ELS_CT_CHAINED_SBALS        0x00000020
 178 #define FSF_FEATURE_UPDATE_ALERT                0x00000100
 179 #define FSF_FEATURE_MEASUREMENT_DATA            0x00000200
 180 #define FSF_FEATURE_REQUEST_SFP_DATA            0x00000200
 181 #define FSF_FEATURE_REPORT_SFP_DATA             0x00000800
 182 #define FSF_FEATURE_FC_SECURITY                 0x00001000
 183 #define FSF_FEATURE_DIF_PROT_TYPE1              0x00010000
 184 #define FSF_FEATURE_DIX_PROT_TCPIP              0x00020000
 185
 186 /* host connection features */
 187 #define FSF_FEATURE_NPIV_MODE                   0x00000001
 188
 189 /* option */
 190 #define FSF_OPEN_LUN_SUPPRESS_BOXING            0x00000001
 191
 192 /* FC security algorithms */
 193 #define FSF_FC_SECURITY_AUTH                    0x00000001
 194 #define FSF_FC_SECURITY_ENC_FCSP2               0x00000002
 195 #define FSF_FC_SECURITY_ENC_ERAS                0x00000004
 196
 197 struct fsf_queue_designator {
 198         u8  cssid;
 199         u8  chpid;
 200         u8  hla;
 201         u8  ua;
 202         u32 res1;
 203 } __attribute__ ((packed));
 204
 205 struct fsf_bit_error_payload {
 206         u32 res1;
 207         u32 link_failure_error_count;
 208         u32 loss_of_sync_error_count;
 209         u32 loss_of_signal_error_count;
 210         u32 primitive_sequence_error_count;
 211         u32 invalid_transmission_word_error_count;
 212         u32 crc_error_count;
 213         u32 primitive_sequence_event_timeout_count;
 214         u32 elastic_buffer_overrun_error_count;
 215         u32 fcal_arbitration_timeout_count;
 216         u32 advertised_receive_b2b_credit;
 217         u32 current_receive_b2b_credit;
 218         u32 advertised_transmit_b2b_credit;
 219         u32 current_transmit_b2b_credit;
 220 } __attribute__ ((packed));
 221
 222 struct fsf_link_down_info {
 223         u32 error_code;
 224         u32 res1;
 225         u8 res2[2];
 226         u8 primary_status;
 227         u8 ioerr_code;
 228         u8 action_code;
 229         u8 reason_code;
 230         u8 explanation_code;
 231         u8 vendor_specific_code;
 232 } __attribute__ ((packed));
 233
 234 struct fsf_version_change {
 235         u32 current_version;
 236         u32 previous_version;
 237 } __packed;
 238
 239 struct fsf_status_read_buffer {
 240         u32 status_type;
 241         u32 status_subtype;
 242         u32 length;
 243         u32 res1;
 244         struct fsf_queue_designator queue_designator;
 245         u8 res2;
 246         u8 d_id[3];
 247         u32 class;
 248         u64 fcp_lun;
 249         u8  res3[24];
 250         union {
 251                 u8  data[FSF_STATUS_READ_PAYLOAD_SIZE];
 252                 u32 word[FSF_STATUS_READ_PAYLOAD_SIZE/sizeof(u32)];
 253                 struct fsf_link_down_info link_down_info;
 254                 struct fsf_bit_error_payload bit_error;
 255                 struct fsf_version_change version_change;
 256         } payload;
 257 } __attribute__ ((packed));
 258
 259 struct fsf_qual_version_error {
 260         u32 fsf_version;
 261         u32 res1[3];
 262 } __attribute__ ((packed));
 263
 264 struct fsf_qual_sequence_error {
 265         u32 exp_req_seq_no;
 266         u32 res1[3];
 267 } __attribute__ ((packed));
 268
 269 struct fsf_qual_latency_info {
 270         u32 channel_lat;
 271         u32 fabric_lat;
 272         u8 res1[8];
 273 } __attribute__ ((packed));
 274
 275 union fsf_prot_status_qual {
 276         u32 word[FSF_PROT_STATUS_QUAL_SIZE / sizeof(u32)];
 277         u64 doubleword[FSF_PROT_STATUS_QUAL_SIZE / sizeof(u64)];
 278         struct fsf_qual_version_error   version_error;
 279         struct fsf_qual_sequence_error  sequence_error;
 280         struct fsf_link_down_info link_down_info;
 281         struct fsf_qual_latency_info latency_info;
 282 } __attribute__ ((packed));
 283
 284 struct fsf_qtcb_prefix {
 285         u64 req_id;
 286         u32 qtcb_version;
 287         u32 ulp_info;
 288         u32 qtcb_type;
 289         u32 req_seq_no;
 290         u32 prot_status;
 291         union fsf_prot_status_qual prot_status_qual;
 292         u8  res1[20];
 293 } __attribute__ ((packed));
 294
 295 struct fsf_statistics_info {
 296         u64 input_req;
 297         u64 output_req;
 298         u64 control_req;
 299         u64 input_mb;
 300         u64 output_mb;
 301         u64 seconds_act;
 302 } __attribute__ ((packed));
 303
 304 union fsf_status_qual {
 305         u8  byte[FSF_STATUS_QUALIFIER_SIZE];
 306         u16 halfword[FSF_STATUS_QUALIFIER_SIZE / sizeof (u16)];
 307         u32 word[FSF_STATUS_QUALIFIER_SIZE / sizeof (u32)];
 308         u64 doubleword[FSF_STATUS_QUALIFIER_SIZE / sizeof(u64)];
 309         struct fsf_queue_designator fsf_queue_designator;
 310         struct fsf_link_down_info link_down_info;
 311 } __attribute__ ((packed));
 312
 313 struct fsf_qtcb_header {
 314         u64 req_handle;
 315         u32 fsf_command;
 316         u32 res1;
 317         u32 port_handle;
 318         u32 lun_handle;
 319         u32 res2;
 320         u32 fsf_status;
 321         union fsf_status_qual fsf_status_qual;
 322         u8  res3[28];
 323         u16 log_start;
 324         u16 log_length;
 325         u8  res4[16];
 326 } __attribute__ ((packed));
 327
 328 #define FSF_PLOGI_MIN_LEN       112
 329
 330 #define FSF_FCP_CMND_SIZE       288
 331 #define FSF_FCP_RSP_SIZE        128
 332
 333 struct fsf_qtcb_bottom_io {
 334         u32 data_direction;
 335         u32 service_class;
 336         u8  res1;
 337         u8  data_prot_flags;
 338         u16 app_tag_value;
 339         u32 ref_tag_value;
 340         u32 fcp_cmnd_length;
 341         u32 data_block_length;
 342         u32 prot_data_length;
 343         u8  res2[4];
 344         union {
 345                 u8              byte[FSF_FCP_CMND_SIZE];
 346                 struct fcp_cmnd iu;
 347         }   fcp_cmnd;
 348         union {
 349                 u8                       byte[FSF_FCP_RSP_SIZE];
 350                 struct fcp_resp_with_ext iu;
 351         }   fcp_rsp;
 352         u8  res3[64];
 353 } __attribute__ ((packed));
 354
 355 struct fsf_qtcb_bottom_support {
 356         u32 operation_subtype;
 357         u8  res1[13];
 358         u8 d_id[3];
 359         u32 option;
 360         u64 fcp_lun;
 361         u64 res2;
 362         u64 req_handle;
 363         u32 service_class;
 364         u8  res3[3];
 365         u8  timeout;
 366         u32 lun_access_info;
 367         u32 connection_info;
 368         u8  res4[176];
 369         u32 els1_length;
 370         u32 els2_length;
 371         u32 req_buf_length;
 372         u32 resp_buf_length;
 373         u8  els[256];
 374 } __attribute__ ((packed));
 375
 376 #define ZFCP_FSF_TIMER_INT_MASK 0x3FFF
 377
 378 struct fsf_qtcb_bottom_config {
 379         u32 lic_version;
 380         u32 feature_selection;
 381         u32 high_qtcb_version;
 382         u32 low_qtcb_version;
 383         u32 max_qtcb_size;
 384         u32 max_data_transfer_size;
 385         u32 adapter_features;
 386         u32 connection_features;
 387         u32 fc_topology;
 388         u32 fc_link_speed;      /* one of ZFCP_FSF_PORTSPEED_* */
 389         u32 adapter_type;
 390         u8 res0;
 391         u8 peer_d_id[3];
 392         u16 status_read_buf_num;
 393         u16 timer_interval;
 394         u8 res2[9];
 395         u8 s_id[3];
 396         u8 nport_serv_param[128];
 397         u8 res3[8];
 398         u32 adapter_ports;
 399         u32 hardware_version;
 400         u8 serial_number[32];
 401         u8 plogi_payload[112];
 402         struct fsf_statistics_info stat_info;
 403         u8 res4[112];
 404 } __attribute__ ((packed));
 405
 406 struct fsf_qtcb_bottom_port {
 407         u64 wwpn;
 408         u32 fc_port_id;
 409         u32 port_type;
 410         u32 port_state;
 411         u32 class_of_service;   /* should be 0x00000006 for class 2 and 3 */
 412         u8 supported_fc4_types[32]; /* should be 0x00000100 for scsi fcp */
 413         u8 active_fc4_types[32];
 414         u32 supported_speed;    /* any combination of ZFCP_FSF_PORTSPEED_* */
 415         u32 maximum_frame_size; /* fixed value of 2112 */
 416         u64 seconds_since_last_reset;
 417         u64 tx_frames;
 418         u64 tx_words;
 419         u64 rx_frames;
 420         u64 rx_words;
 421         u64 lip;                /* 0 */
 422         u64 nos;                /* currently 0 */
 423         u64 error_frames;       /* currently 0 */
 424         u64 dumped_frames;      /* currently 0 */
 425         u64 link_failure;
 426         u64 loss_of_sync;
 427         u64 loss_of_signal;
 428         u64 psp_error_counts;
 429         u64 invalid_tx_words;
 430         u64 invalid_crcs;
 431         u64 input_requests;
 432         u64 output_requests;
 433         u64 control_requests;
 434         u64 input_mb;           /* where 1 MByte == 1.000.000 Bytes */
 435         u64 output_mb;          /* where 1 MByte == 1.000.000 Bytes */
 436         u8 cp_util;
 437         u8 cb_util;
 438         u8 a_util;
 439         u8 res2;
 440         s16 temperature;
 441         u16 vcc;
 442         u16 tx_bias;
 443         u16 tx_power;
 444         u16 rx_power;
 445         union {
 446                 u16 raw;
 447                 struct {
 448                         u16 fec_active          :1;
 449                         u16:7;
 450                         u16 connector_type      :2;
 451                         u16 sfp_invalid         :1;
 452                         u16 optical_port        :1;
 453                         u16 port_tx_type        :4;
 454                 };
 455         } sfp_flags;
 456         u32 fc_security_algorithms;
 457         u8 res3[236];
 458 } __attribute__ ((packed));
 459
 460 union fsf_qtcb_bottom {
 461         struct fsf_qtcb_bottom_io      io;
 462         struct fsf_qtcb_bottom_support support;
 463         struct fsf_qtcb_bottom_config  config;
 464         struct fsf_qtcb_bottom_port port;
 465 };
 466
 467 struct fsf_qtcb {
 468         struct fsf_qtcb_prefix prefix;
 469         struct fsf_qtcb_header header;
 470         union  fsf_qtcb_bottom bottom;
 471         u8 log[FSF_QTCB_LOG_SIZE];
 472 } __attribute__ ((packed));
 473
 474 struct zfcp_blk_drv_data {
 475 #define ZFCP_BLK_DRV_DATA_MAGIC                 0x1
 476         u32 magic;
 477 #define ZFCP_BLK_LAT_VALID                      0x1
 478 #define ZFCP_BLK_REQ_ERROR                      0x2
 479         u16 flags;
 480         u8 inb_usage;
 481         u8 outb_usage;
 482         u64 channel_lat;
 483         u64 fabric_lat;
 484 } __attribute__ ((packed));
 485
 486 /**
 487  * struct zfcp_fsf_ct_els - zfcp data for ct or els request
 488  * @req: scatter-gather list for request, points to &zfcp_fc_req.sg_req or BSG
 489  * @resp: scatter-gather list for response, points to &zfcp_fc_req.sg_rsp or BSG
 490  * @handler: handler function (called for response to the request)
 491  * @handler_data: data passed to handler function
 492  * @port: Optional pointer to port for zfcp internal ELS (only test link ADISC)
 493  * @status: used to pass error status to calling function
 494  * @d_id: Destination ID of either open WKA port for CT or of D_ID for ELS
 495  */
 496 struct zfcp_fsf_ct_els {
 497         struct scatterlist *req;
 498         struct scatterlist *resp;
 499         void (*handler)(void *);
 500         void *handler_data;
 501         struct zfcp_port *port;
 502         int status;
 503         u32 d_id;
 504 };
 505
 506 #endif                          /* FSF_H */