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, 2017
   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_ADAPTER_STATUS_AVAILABLE            0x000000AD
  82 #define FSF_FCP_RSP_AVAILABLE                   0x000000AF
  83 #define FSF_UNKNOWN_COMMAND                     0x000000E2
  84 #define FSF_UNKNOWN_OP_SUBTYPE                  0x000000E3
  85 #define FSF_INVALID_COMMAND_OPTION              0x000000E5
  86
  87 #define FSF_PROT_STATUS_QUAL_SIZE               16
  88 #define FSF_STATUS_QUALIFIER_SIZE               16
  89
  90 /* FSF status qualifier, recommendations */
  91 #define FSF_SQ_NO_RECOM                         0x00
  92 #define FSF_SQ_FCP_RSP_AVAILABLE                0x01
  93 #define FSF_SQ_RETRY_IF_POSSIBLE                0x02
  94 #define FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED       0x03
  95 #define FSF_SQ_INVOKE_LINK_TEST_PROCEDURE       0x04
  96 #define FSF_SQ_COMMAND_ABORTED                  0x06
  97 #define FSF_SQ_NO_RETRY_POSSIBLE                0x07
  98
  99 /* FSF status qualifier (most significant 4 bytes), local link down */
 100 #define FSF_PSQ_LINK_NO_LIGHT                   0x00000004
 101 #define FSF_PSQ_LINK_WRAP_PLUG                  0x00000008
 102 #define FSF_PSQ_LINK_NO_FCP                     0x00000010
 103 #define FSF_PSQ_LINK_FIRMWARE_UPDATE            0x00000020
 104 #define FSF_PSQ_LINK_INVALID_WWPN               0x00000100
 105 #define FSF_PSQ_LINK_NO_NPIV_SUPPORT            0x00000200
 106 #define FSF_PSQ_LINK_NO_FCP_RESOURCES           0x00000400
 107 #define FSF_PSQ_LINK_NO_FABRIC_RESOURCES        0x00000800
 108 #define FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE        0x00001000
 109 #define FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED  0x00002000
 110 #define FSF_PSQ_LINK_MODE_TABLE_CURRUPTED       0x00004000
 111 #define FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT         0x00008000
 112
 113 /* payload size in status read buffer */
 114 #define FSF_STATUS_READ_PAYLOAD_SIZE            4032
 115
 116 /* number of status read buffers that should be sent by ULP */
 117 #define FSF_STATUS_READS_RECOM                  16
 118
 119 /* status types in status read buffer */
 120 #define FSF_STATUS_READ_PORT_CLOSED             0x00000001
 121 #define FSF_STATUS_READ_INCOMING_ELS            0x00000002
 122 #define FSF_STATUS_READ_SENSE_DATA_AVAIL        0x00000003
 123 #define FSF_STATUS_READ_BIT_ERROR_THRESHOLD     0x00000004
 124 #define FSF_STATUS_READ_LINK_DOWN               0x00000005
 125 #define FSF_STATUS_READ_LINK_UP                 0x00000006
 126 #define FSF_STATUS_READ_NOTIFICATION_LOST       0x00000009
 127 #define FSF_STATUS_READ_FEATURE_UPDATE_ALERT    0x0000000C
 128
 129 /* status subtypes for link down */
 130 #define FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK    0x00000000
 131 #define FSF_STATUS_READ_SUB_FDISC_FAILED        0x00000001
 132 #define FSF_STATUS_READ_SUB_FIRMWARE_UPDATE     0x00000002
 133
 134 /* status subtypes for unsolicited status notification lost */
 135 #define FSF_STATUS_READ_SUB_INCOMING_ELS        0x00000001
 136
 137 /* topologie that is detected by the adapter */
 138 #define FSF_TOPO_P2P                            0x00000001
 139 #define FSF_TOPO_FABRIC                         0x00000002
 140 #define FSF_TOPO_AL                             0x00000003
 141
 142 /* data direction for FCP commands */
 143 #define FSF_DATADIR_WRITE                       0x00000001
 144 #define FSF_DATADIR_READ                        0x00000002
 145 #define FSF_DATADIR_CMND                        0x00000004
 146 #define FSF_DATADIR_DIF_WRITE_INSERT            0x00000009
 147 #define FSF_DATADIR_DIF_READ_STRIP              0x0000000a
 148 #define FSF_DATADIR_DIF_WRITE_CONVERT           0x0000000b
 149 #define FSF_DATADIR_DIF_READ_CONVERT            0X0000000c
 150
 151 /* data protection control flags */
 152 #define FSF_APP_TAG_CHECK_ENABLE                0x10
 153
 154 /* fc service class */
 155 #define FSF_CLASS_3                             0x00000003
 156
 157 /* logging space behind QTCB */
 158 #define FSF_QTCB_LOG_SIZE                       1024
 159
 160 /* channel features */
 161 #define FSF_FEATURE_NOTIFICATION_LOST           0x00000008
 162 #define FSF_FEATURE_HBAAPI_MANAGEMENT           0x00000010
 163 #define FSF_FEATURE_ELS_CT_CHAINED_SBALS        0x00000020
 164 #define FSF_FEATURE_UPDATE_ALERT                0x00000100
 165 #define FSF_FEATURE_MEASUREMENT_DATA            0x00000200
 166 #define FSF_FEATURE_DIF_PROT_TYPE1              0x00010000
 167 #define FSF_FEATURE_DIX_PROT_TCPIP              0x00020000
 168
 169 /* host connection features */
 170 #define FSF_FEATURE_NPIV_MODE                   0x00000001
 171
 172 /* option */
 173 #define FSF_OPEN_LUN_SUPPRESS_BOXING            0x00000001
 174
 175 struct fsf_queue_designator {
 176         u8  cssid;
 177         u8  chpid;
 178         u8  hla;
 179         u8  ua;
 180         u32 res1;
 181 } __attribute__ ((packed));
 182
 183 struct fsf_bit_error_payload {
 184         u32 res1;
 185         u32 link_failure_error_count;
 186         u32 loss_of_sync_error_count;
 187         u32 loss_of_signal_error_count;
 188         u32 primitive_sequence_error_count;
 189         u32 invalid_transmission_word_error_count;
 190         u32 crc_error_count;
 191         u32 primitive_sequence_event_timeout_count;
 192         u32 elastic_buffer_overrun_error_count;
 193         u32 fcal_arbitration_timeout_count;
 194         u32 advertised_receive_b2b_credit;
 195         u32 current_receive_b2b_credit;
 196         u32 advertised_transmit_b2b_credit;
 197         u32 current_transmit_b2b_credit;
 198 } __attribute__ ((packed));
 199
 200 struct fsf_link_down_info {
 201         u32 error_code;
 202         u32 res1;
 203         u8 res2[2];
 204         u8 primary_status;
 205         u8 ioerr_code;
 206         u8 action_code;
 207         u8 reason_code;
 208         u8 explanation_code;
 209         u8 vendor_specific_code;
 210 } __attribute__ ((packed));
 211
 212 struct fsf_status_read_buffer {
 213         u32 status_type;
 214         u32 status_subtype;
 215         u32 length;
 216         u32 res1;
 217         struct fsf_queue_designator queue_designator;
 218         u8 res2;
 219         u8 d_id[3];
 220         u32 class;
 221         u64 fcp_lun;
 222         u8  res3[24];
 223         union {
 224                 u8  data[FSF_STATUS_READ_PAYLOAD_SIZE];
 225                 u32 word[FSF_STATUS_READ_PAYLOAD_SIZE/sizeof(u32)];
 226                 struct fsf_link_down_info link_down_info;
 227                 struct fsf_bit_error_payload bit_error;
 228         } payload;
 229 } __attribute__ ((packed));
 230
 231 struct fsf_qual_version_error {
 232         u32 fsf_version;
 233         u32 res1[3];
 234 } __attribute__ ((packed));
 235
 236 struct fsf_qual_sequence_error {
 237         u32 exp_req_seq_no;
 238         u32 res1[3];
 239 } __attribute__ ((packed));
 240
 241 struct fsf_qual_latency_info {
 242         u32 channel_lat;
 243         u32 fabric_lat;
 244         u8 res1[8];
 245 } __attribute__ ((packed));
 246
 247 union fsf_prot_status_qual {
 248         u32 word[FSF_PROT_STATUS_QUAL_SIZE / sizeof(u32)];
 249         u64 doubleword[FSF_PROT_STATUS_QUAL_SIZE / sizeof(u64)];
 250         struct fsf_qual_version_error   version_error;
 251         struct fsf_qual_sequence_error  sequence_error;
 252         struct fsf_link_down_info link_down_info;
 253         struct fsf_qual_latency_info latency_info;
 254 } __attribute__ ((packed));
 255
 256 struct fsf_qtcb_prefix {
 257         u64 req_id;
 258         u32 qtcb_version;
 259         u32 ulp_info;
 260         u32 qtcb_type;
 261         u32 req_seq_no;
 262         u32 prot_status;
 263         union fsf_prot_status_qual prot_status_qual;
 264         u8  res1[20];
 265 } __attribute__ ((packed));
 266
 267 struct fsf_statistics_info {
 268         u64 input_req;
 269         u64 output_req;
 270         u64 control_req;
 271         u64 input_mb;
 272         u64 output_mb;
 273         u64 seconds_act;
 274 } __attribute__ ((packed));
 275
 276 union fsf_status_qual {
 277         u8  byte[FSF_STATUS_QUALIFIER_SIZE];
 278         u16 halfword[FSF_STATUS_QUALIFIER_SIZE / sizeof (u16)];
 279         u32 word[FSF_STATUS_QUALIFIER_SIZE / sizeof (u32)];
 280         u64 doubleword[FSF_STATUS_QUALIFIER_SIZE / sizeof(u64)];
 281         struct fsf_queue_designator fsf_queue_designator;
 282         struct fsf_link_down_info link_down_info;
 283 } __attribute__ ((packed));
 284
 285 struct fsf_qtcb_header {
 286         u64 req_handle;
 287         u32 fsf_command;
 288         u32 res1;
 289         u32 port_handle;
 290         u32 lun_handle;
 291         u32 res2;
 292         u32 fsf_status;
 293         union fsf_status_qual fsf_status_qual;
 294         u8  res3[28];
 295         u16 log_start;
 296         u16 log_length;
 297         u8  res4[16];
 298 } __attribute__ ((packed));
 299
 300 #define FSF_PLOGI_MIN_LEN       112
 301
 302 #define FSF_FCP_CMND_SIZE       288
 303 #define FSF_FCP_RSP_SIZE        128
 304
 305 struct fsf_qtcb_bottom_io {
 306         u32 data_direction;
 307         u32 service_class;
 308         u8  res1;
 309         u8  data_prot_flags;
 310         u16 app_tag_value;
 311         u32 ref_tag_value;
 312         u32 fcp_cmnd_length;
 313         u32 data_block_length;
 314         u32 prot_data_length;
 315         u8  res2[4];
 316         union {
 317                 u8              byte[FSF_FCP_CMND_SIZE];
 318                 struct fcp_cmnd iu;
 319         }   fcp_cmnd;
 320         union {
 321                 u8                       byte[FSF_FCP_RSP_SIZE];
 322                 struct fcp_resp_with_ext iu;
 323         }   fcp_rsp;
 324         u8  res3[64];
 325 } __attribute__ ((packed));
 326
 327 struct fsf_qtcb_bottom_support {
 328         u32 operation_subtype;
 329         u8  res1[13];
 330         u8 d_id[3];
 331         u32 option;
 332         u64 fcp_lun;
 333         u64 res2;
 334         u64 req_handle;
 335         u32 service_class;
 336         u8  res3[3];
 337         u8  timeout;
 338         u32 lun_access_info;
 339         u8  res4[180];
 340         u32 els1_length;
 341         u32 els2_length;
 342         u32 req_buf_length;
 343         u32 resp_buf_length;
 344         u8  els[256];
 345 } __attribute__ ((packed));
 346
 347 #define ZFCP_FSF_TIMER_INT_MASK 0x3FFF
 348
 349 struct fsf_qtcb_bottom_config {
 350         u32 lic_version;
 351         u32 feature_selection;
 352         u32 high_qtcb_version;
 353         u32 low_qtcb_version;
 354         u32 max_qtcb_size;
 355         u32 max_data_transfer_size;
 356         u32 adapter_features;
 357         u32 connection_features;
 358         u32 fc_topology;
 359         u32 fc_link_speed;
 360         u32 adapter_type;
 361         u8 res0;
 362         u8 peer_d_id[3];
 363         u16 status_read_buf_num;
 364         u16 timer_interval;
 365         u8 res2[9];
 366         u8 s_id[3];
 367         u8 nport_serv_param[128];
 368         u8 res3[8];
 369         u32 adapter_ports;
 370         u32 hardware_version;
 371         u8 serial_number[32];
 372         u8 plogi_payload[112];
 373         struct fsf_statistics_info stat_info;
 374         u8 res4[112];
 375 } __attribute__ ((packed));
 376
 377 struct fsf_qtcb_bottom_port {
 378         u64 wwpn;
 379         u32 fc_port_id;
 380         u32 port_type;
 381         u32 port_state;
 382         u32 class_of_service;   /* should be 0x00000006 for class 2 and 3 */
 383         u8 supported_fc4_types[32]; /* should be 0x00000100 for scsi fcp */
 384         u8 active_fc4_types[32];
 385         u32 supported_speed;    /* 0x0001 for 1 GBit/s or 0x0002 for 2 GBit/s */
 386         u32 maximum_frame_size; /* fixed value of 2112 */
 387         u64 seconds_since_last_reset;
 388         u64 tx_frames;
 389         u64 tx_words;
 390         u64 rx_frames;
 391         u64 rx_words;
 392         u64 lip;                /* 0 */
 393         u64 nos;                /* currently 0 */
 394         u64 error_frames;       /* currently 0 */
 395         u64 dumped_frames;      /* currently 0 */
 396         u64 link_failure;
 397         u64 loss_of_sync;
 398         u64 loss_of_signal;
 399         u64 psp_error_counts;
 400         u64 invalid_tx_words;
 401         u64 invalid_crcs;
 402         u64 input_requests;
 403         u64 output_requests;
 404         u64 control_requests;
 405         u64 input_mb;           /* where 1 MByte == 1.000.000 Bytes */
 406         u64 output_mb;          /* where 1 MByte == 1.000.000 Bytes */
 407         u8 cp_util;
 408         u8 cb_util;
 409         u8 a_util;
 410         u8 res2[253];
 411 } __attribute__ ((packed));
 412
 413 union fsf_qtcb_bottom {
 414         struct fsf_qtcb_bottom_io      io;
 415         struct fsf_qtcb_bottom_support support;
 416         struct fsf_qtcb_bottom_config  config;
 417         struct fsf_qtcb_bottom_port port;
 418 };
 419
 420 struct fsf_qtcb {
 421         struct fsf_qtcb_prefix prefix;
 422         struct fsf_qtcb_header header;
 423         union  fsf_qtcb_bottom bottom;
 424         u8 log[FSF_QTCB_LOG_SIZE];
 425 } __attribute__ ((packed));
 426
 427 struct zfcp_blk_drv_data {
 428 #define ZFCP_BLK_DRV_DATA_MAGIC                 0x1
 429         u32 magic;
 430 #define ZFCP_BLK_LAT_VALID                      0x1
 431 #define ZFCP_BLK_REQ_ERROR                      0x2
 432         u16 flags;
 433         u8 inb_usage;
 434         u8 outb_usage;
 435         u64 channel_lat;
 436         u64 fabric_lat;
 437 } __attribute__ ((packed));
 438
 439 /**
 440  * struct zfcp_fsf_ct_els - zfcp data for ct or els request
 441  * @req: scatter-gather list for request
 442  * @resp: scatter-gather list for response
 443  * @handler: handler function (called for response to the request)
 444  * @handler_data: data passed to handler function
 445  * @port: Optional pointer to port for zfcp internal ELS (only test link ADISC)
 446  * @status: used to pass error status to calling function
 447  * @d_id: Destination ID of either open WKA port for CT or of D_ID for ELS
 448  */
 449 struct zfcp_fsf_ct_els {
 450         struct scatterlist *req;
 451         struct scatterlist *resp;
 452         void (*handler)(void *);
 453         void *handler_data;
 454         struct zfcp_port *port;
 455         int status;
 456         u32 d_id;
 457 };
 458
 459 #endif                          /* FSF_H */