drivers/s390/scsi/zfcp_fsf.h

   1 /*
   2  * zfcp device driver
   3  *
   4  * Interface to the FSF support functions.
   5  *
   6  * Copyright IBM Corporation 2002, 2008
   7  */
   8
   9 #ifndef FSF_H
  10 #define FSF_H
  11
  12 #include <linux/pfn.h>
  13
  14 #define FSF_QTCB_CURRENT_VERSION                0x00000001
  15
  16 /* FSF commands */
  17 #define FSF_QTCB_FCP_CMND                       0x00000001
  18 #define FSF_QTCB_ABORT_FCP_CMND                 0x00000002
  19 #define FSF_QTCB_OPEN_PORT_WITH_DID             0x00000005
  20 #define FSF_QTCB_OPEN_LUN                       0x00000006
  21 #define FSF_QTCB_CLOSE_LUN                      0x00000007
  22 #define FSF_QTCB_CLOSE_PORT                     0x00000008
  23 #define FSF_QTCB_CLOSE_PHYSICAL_PORT            0x00000009
  24 #define FSF_QTCB_SEND_ELS                       0x0000000B
  25 #define FSF_QTCB_SEND_GENERIC                   0x0000000C
  26 #define FSF_QTCB_EXCHANGE_CONFIG_DATA           0x0000000D
  27 #define FSF_QTCB_EXCHANGE_PORT_DATA             0x0000000E
  28 #define FSF_QTCB_DOWNLOAD_CONTROL_FILE          0x00000012
  29 #define FSF_QTCB_UPLOAD_CONTROL_FILE            0x00000013
  30
  31 /* FSF QTCB types */
  32 #define FSF_IO_COMMAND                          0x00000001
  33 #define FSF_SUPPORT_COMMAND                     0x00000002
  34 #define FSF_CONFIG_COMMAND                      0x00000003
  35 #define FSF_PORT_COMMAND                        0x00000004
  36
  37 /* FSF control file upload/download operations' subtype and options */
  38 #define FSF_CFDC_OPERATION_SUBTYPE              0x00020001
  39 #define FSF_CFDC_OPTION_NORMAL_MODE             0x00000000
  40 #define FSF_CFDC_OPTION_FORCE                   0x00000001
  41 #define FSF_CFDC_OPTION_FULL_ACCESS             0x00000002
  42 #define FSF_CFDC_OPTION_RESTRICTED_ACCESS       0x00000004
  43
  44 /* FSF protocol states */
  45 #define FSF_PROT_GOOD                           0x00000001
  46 #define FSF_PROT_QTCB_VERSION_ERROR             0x00000010
  47 #define FSF_PROT_SEQ_NUMB_ERROR                 0x00000020
  48 #define FSF_PROT_UNSUPP_QTCB_TYPE               0x00000040
  49 #define FSF_PROT_HOST_CONNECTION_INITIALIZING   0x00000080
  50 #define FSF_PROT_FSF_STATUS_PRESENTED           0x00000100
  51 #define FSF_PROT_DUPLICATE_REQUEST_ID           0x00000200
  52 #define FSF_PROT_LINK_DOWN                      0x00000400
  53 #define FSF_PROT_REEST_QUEUE                    0x00000800
  54 #define FSF_PROT_ERROR_STATE                    0x01000000
  55
  56 /* FSF states */
  57 #define FSF_GOOD                                0x00000000
  58 #define FSF_PORT_ALREADY_OPEN                   0x00000001
  59 #define FSF_LUN_ALREADY_OPEN                    0x00000002
  60 #define FSF_PORT_HANDLE_NOT_VALID               0x00000003
  61 #define FSF_LUN_HANDLE_NOT_VALID                0x00000004
  62 #define FSF_HANDLE_MISMATCH                     0x00000005
  63 #define FSF_SERVICE_CLASS_NOT_SUPPORTED         0x00000006
  64 #define FSF_FCPLUN_NOT_VALID                    0x00000009
  65 #define FSF_ACCESS_DENIED                       0x00000010
  66 #define FSF_LUN_SHARING_VIOLATION               0x00000012
  67 #define FSF_FCP_COMMAND_DOES_NOT_EXIST          0x00000022
  68 #define FSF_DIRECTION_INDICATOR_NOT_VALID       0x00000030
  69 #define FSF_CMND_LENGTH_NOT_VALID               0x00000033
  70 #define FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED    0x00000040
  71 #define FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED     0x00000041
  72 #define FSF_ELS_COMMAND_REJECTED                0x00000050
  73 #define FSF_GENERIC_COMMAND_REJECTED            0x00000051
  74 #define FSF_PORT_BOXED                          0x00000059
  75 #define FSF_LUN_BOXED                           0x0000005A
  76 #define FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE     0x0000005B
  77 #define FSF_PAYLOAD_SIZE_MISMATCH               0x00000060
  78 #define FSF_REQUEST_SIZE_TOO_LARGE              0x00000061
  79 #define FSF_RESPONSE_SIZE_TOO_LARGE             0x00000062
  80 #define FSF_SBAL_MISMATCH                       0x00000063
  81 #define FSF_ADAPTER_STATUS_AVAILABLE            0x000000AD
  82 #define FSF_UNKNOWN_COMMAND                     0x000000E2
  83 #define FSF_UNKNOWN_OP_SUBTYPE                  0x000000E3
  84 #define FSF_INVALID_COMMAND_OPTION              0x000000E5
  85 /* #define FSF_ERROR                             0x000000FF  */
  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_CFDC_UPDATED            0x0000000A
 128 #define FSF_STATUS_READ_FEATURE_UPDATE_ALERT    0x0000000C
 129
 130 /* status subtypes in status read buffer */
 131 #define FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT     0x00000001
 132 #define FSF_STATUS_READ_SUB_ERROR_PORT          0x00000002
 133
 134 /* status subtypes for link down */
 135 #define FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK    0x00000000
 136 #define FSF_STATUS_READ_SUB_FDISC_FAILED        0x00000001
 137 #define FSF_STATUS_READ_SUB_FIRMWARE_UPDATE     0x00000002
 138
 139 /* status subtypes for unsolicited status notification lost */
 140 #define FSF_STATUS_READ_SUB_INCOMING_ELS        0x00000001
 141 #define FSF_STATUS_READ_SUB_ACT_UPDATED         0x00000020
 142
 143 /* topologie that is detected by the adapter */
 144 #define FSF_TOPO_P2P                            0x00000001
 145 #define FSF_TOPO_FABRIC                         0x00000002
 146 #define FSF_TOPO_AL                             0x00000003
 147
 148 /* data direction for FCP commands */
 149 #define FSF_DATADIR_WRITE                       0x00000001
 150 #define FSF_DATADIR_READ                        0x00000002
 151 #define FSF_DATADIR_CMND                        0x00000004
 152
 153 /* fc service class */
 154 #define FSF_CLASS_3                             0x00000003
 155
 156 /* SBAL chaining */
 157 #define FSF_MAX_SBALS_PER_REQ                   36
 158
 159 /* logging space behind QTCB */
 160 #define FSF_QTCB_LOG_SIZE                       1024
 161
 162 /* channel features */
 163 #define FSF_FEATURE_CFDC                        0x00000002
 164 #define FSF_FEATURE_LUN_SHARING                 0x00000004
 165 #define FSF_FEATURE_NOTIFICATION_LOST           0x00000008
 166 #define FSF_FEATURE_HBAAPI_MANAGEMENT           0x00000010
 167 #define FSF_FEATURE_ELS_CT_CHAINED_SBALS        0x00000020
 168 #define FSF_FEATURE_UPDATE_ALERT                0x00000100
 169 #define FSF_FEATURE_MEASUREMENT_DATA            0x00000200
 170
 171 /* host connection features */
 172 #define FSF_FEATURE_NPIV_MODE                   0x00000001
 173
 174 /* option */
 175 #define FSF_OPEN_LUN_SUPPRESS_BOXING            0x00000001
 176
 177 /* open LUN access flags*/
 178 #define FSF_UNIT_ACCESS_EXCLUSIVE               0x02000000
 179 #define FSF_UNIT_ACCESS_OUTBOUND_TRANSFER       0x10000000
 180
 181 /* FSF interface for CFDC */
 182 #define ZFCP_CFDC_MAX_SIZE              127 * 1024
 183 #define ZFCP_CFDC_PAGES                 PFN_UP(ZFCP_CFDC_MAX_SIZE)
 184
 185 struct zfcp_fsf_cfdc {
 186         struct scatterlist sg[ZFCP_CFDC_PAGES];
 187         u32 command;
 188         u32 option;
 189 };
 190
 191 struct fsf_queue_designator {
 192         u8  cssid;
 193         u8  chpid;
 194         u8  hla;
 195         u8  ua;
 196         u32 res1;
 197 } __attribute__ ((packed));
 198
 199 struct fsf_bit_error_payload {
 200         u32 res1;
 201         u32 link_failure_error_count;
 202         u32 loss_of_sync_error_count;
 203         u32 loss_of_signal_error_count;
 204         u32 primitive_sequence_error_count;
 205         u32 invalid_transmission_word_error_count;
 206         u32 crc_error_count;
 207         u32 primitive_sequence_event_timeout_count;
 208         u32 elastic_buffer_overrun_error_count;
 209         u32 fcal_arbitration_timeout_count;
 210         u32 advertised_receive_b2b_credit;
 211         u32 current_receive_b2b_credit;
 212         u32 advertised_transmit_b2b_credit;
 213         u32 current_transmit_b2b_credit;
 214 } __attribute__ ((packed));
 215
 216 struct fsf_link_down_info {
 217         u32 error_code;
 218         u32 res1;
 219         u8 res2[2];
 220         u8 primary_status;
 221         u8 ioerr_code;
 222         u8 action_code;
 223         u8 reason_code;
 224         u8 explanation_code;
 225         u8 vendor_specific_code;
 226 } __attribute__ ((packed));
 227
 228 struct fsf_status_read_buffer {
 229         u32 status_type;
 230         u32 status_subtype;
 231         u32 length;
 232         u32 res1;
 233         struct fsf_queue_designator queue_designator;
 234         u32 d_id;
 235         u32 class;
 236         u64 fcp_lun;
 237         u8  res3[24];
 238         union {
 239                 u8  data[FSF_STATUS_READ_PAYLOAD_SIZE];
 240                 u32 word[FSF_STATUS_READ_PAYLOAD_SIZE/sizeof(u32)];
 241                 struct fsf_link_down_info link_down_info;
 242                 struct fsf_bit_error_payload bit_error;
 243         } payload;
 244 } __attribute__ ((packed));
 245
 246 struct fsf_qual_version_error {
 247         u32 fsf_version;
 248         u32 res1[3];
 249 } __attribute__ ((packed));
 250
 251 struct fsf_qual_sequence_error {
 252         u32 exp_req_seq_no;
 253         u32 res1[3];
 254 } __attribute__ ((packed));
 255
 256 struct fsf_qual_latency_info {
 257         u32 channel_lat;
 258         u32 fabric_lat;
 259         u8 res1[8];
 260 } __attribute__ ((packed));
 261
 262 union fsf_prot_status_qual {
 263         u32 word[FSF_PROT_STATUS_QUAL_SIZE / sizeof(u32)];
 264         u64 doubleword[FSF_PROT_STATUS_QUAL_SIZE / sizeof(u64)];
 265         struct fsf_qual_version_error   version_error;
 266         struct fsf_qual_sequence_error  sequence_error;
 267         struct fsf_link_down_info link_down_info;
 268         struct fsf_qual_latency_info latency_info;
 269 } __attribute__ ((packed));
 270
 271 struct fsf_qtcb_prefix {
 272         u64 req_id;
 273         u32 qtcb_version;
 274         u32 ulp_info;
 275         u32 qtcb_type;
 276         u32 req_seq_no;
 277         u32 prot_status;
 278         union fsf_prot_status_qual prot_status_qual;
 279         u8  res1[20];
 280 } __attribute__ ((packed));
 281
 282 struct fsf_statistics_info {
 283         u64 input_req;
 284         u64 output_req;
 285         u64 control_req;
 286         u64 input_mb;
 287         u64 output_mb;
 288         u64 seconds_act;
 289 } __attribute__ ((packed));
 290
 291 union fsf_status_qual {
 292         u8  byte[FSF_STATUS_QUALIFIER_SIZE];
 293         u16 halfword[FSF_STATUS_QUALIFIER_SIZE / sizeof (u16)];
 294         u32 word[FSF_STATUS_QUALIFIER_SIZE / sizeof (u32)];
 295         u64 doubleword[FSF_STATUS_QUALIFIER_SIZE / sizeof(u64)];
 296         struct fsf_queue_designator fsf_queue_designator;
 297         struct fsf_link_down_info link_down_info;
 298 } __attribute__ ((packed));
 299
 300 struct fsf_qtcb_header {
 301         u64 req_handle;
 302         u32 fsf_command;
 303         u32 res1;
 304         u32 port_handle;
 305         u32 lun_handle;
 306         u32 res2;
 307         u32 fsf_status;
 308         union fsf_status_qual fsf_status_qual;
 309         u8  res3[28];
 310         u16 log_start;
 311         u16 log_length;
 312         u8  res4[16];
 313 } __attribute__ ((packed));
 314
 315 struct fsf_nport_serv_param {
 316         u8  common_serv_param[16];
 317         u64 wwpn;
 318         u64 wwnn;
 319         u8  class1_serv_param[16];
 320         u8  class2_serv_param[16];
 321         u8  class3_serv_param[16];
 322         u8  class4_serv_param[16];
 323         u8  vendor_version_level[16];
 324 } __attribute__ ((packed));
 325
 326 #define FSF_PLOGI_MIN_LEN       112
 327 struct fsf_plogi {
 328         u32    code;
 329         struct fsf_nport_serv_param serv_param;
 330 } __attribute__ ((packed));
 331
 332 #define FSF_FCP_CMND_SIZE       288
 333 #define FSF_FCP_RSP_SIZE        128
 334
 335 struct fsf_qtcb_bottom_io {
 336         u32 data_direction;
 337         u32 service_class;
 338         u8  res1[8];
 339         u32 fcp_cmnd_length;
 340         u8  res2[12];
 341         u8  fcp_cmnd[FSF_FCP_CMND_SIZE];
 342         u8  fcp_rsp[FSF_FCP_RSP_SIZE];
 343         u8  res3[64];
 344 } __attribute__ ((packed));
 345
 346 struct fsf_qtcb_bottom_support {
 347         u32 operation_subtype;
 348         u8  res1[12];
 349         u32 d_id;
 350         u32 option;
 351         u64 fcp_lun;
 352         u64 res2;
 353         u64 req_handle;
 354         u32 service_class;
 355         u8  res3[3];
 356         u8  timeout;
 357         u32 lun_access_info;
 358         u8  res4[180];
 359         u32 els1_length;
 360         u32 els2_length;
 361         u32 req_buf_length;
 362         u32 resp_buf_length;
 363         u8  els[256];
 364 } __attribute__ ((packed));
 365
 366 struct fsf_qtcb_bottom_config {
 367         u32 lic_version;
 368         u32 feature_selection;
 369         u32 high_qtcb_version;
 370         u32 low_qtcb_version;
 371         u32 max_qtcb_size;
 372         u32 max_data_transfer_size;
 373         u32 adapter_features;
 374         u32 connection_features;
 375         u32 fc_topology;
 376         u32 fc_link_speed;
 377         u32 adapter_type;
 378         u32 peer_d_id;
 379         u8 res1[2];
 380         u16 timer_interval;
 381         u8 res2[8];
 382         u32 s_id;
 383         struct fsf_nport_serv_param nport_serv_param;
 384         u8 reserved_nport_serv_param[16];
 385         u8 res3[8];
 386         u32 adapter_ports;
 387         u32 hardware_version;
 388         u8 serial_number[32];
 389         struct fsf_nport_serv_param plogi_payload;
 390         struct fsf_statistics_info stat_info;
 391         u8 res4[112];
 392 } __attribute__ ((packed));
 393
 394 struct fsf_qtcb_bottom_port {
 395         u64 wwpn;
 396         u32 fc_port_id;
 397         u32 port_type;
 398         u32 port_state;
 399         u32 class_of_service;   /* should be 0x00000006 for class 2 and 3 */
 400         u8 supported_fc4_types[32]; /* should be 0x00000100 for scsi fcp */
 401         u8 active_fc4_types[32];
 402         u32 supported_speed;    /* 0x0001 for 1 GBit/s or 0x0002 for 2 GBit/s */
 403         u32 maximum_frame_size; /* fixed value of 2112 */
 404         u64 seconds_since_last_reset;
 405         u64 tx_frames;
 406         u64 tx_words;
 407         u64 rx_frames;
 408         u64 rx_words;
 409         u64 lip;                /* 0 */
 410         u64 nos;                /* currently 0 */
 411         u64 error_frames;       /* currently 0 */
 412         u64 dumped_frames;      /* currently 0 */
 413         u64 link_failure;
 414         u64 loss_of_sync;
 415         u64 loss_of_signal;
 416         u64 psp_error_counts;
 417         u64 invalid_tx_words;
 418         u64 invalid_crcs;
 419         u64 input_requests;
 420         u64 output_requests;
 421         u64 control_requests;
 422         u64 input_mb;           /* where 1 MByte == 1.000.000 Bytes */
 423         u64 output_mb;          /* where 1 MByte == 1.000.000 Bytes */
 424         u8 cp_util;
 425         u8 cb_util;
 426         u8 a_util;
 427         u8 res2[253];
 428 } __attribute__ ((packed));
 429
 430 union fsf_qtcb_bottom {
 431         struct fsf_qtcb_bottom_io      io;
 432         struct fsf_qtcb_bottom_support support;
 433         struct fsf_qtcb_bottom_config  config;
 434         struct fsf_qtcb_bottom_port port;
 435 };
 436
 437 struct fsf_qtcb {
 438         struct fsf_qtcb_prefix prefix;
 439         struct fsf_qtcb_header header;
 440         union  fsf_qtcb_bottom bottom;
 441         u8 log[FSF_QTCB_LOG_SIZE];
 442 } __attribute__ ((packed));
 443
 444 struct zfcp_blk_drv_data {
 445 #define ZFCP_BLK_DRV_DATA_MAGIC                 0x1
 446         u32 magic;
 447 #define ZFCP_BLK_LAT_VALID                      0x1
 448 #define ZFCP_BLK_REQ_ERROR                      0x2
 449         u16 flags;
 450         u8 inb_usage;
 451         u8 outb_usage;
 452         u64 channel_lat;
 453         u64 fabric_lat;
 454 } __attribute__ ((packed));
 455
 456 #endif                          /* FSF_H */