include/linux/qed/iscsi_common.h

   1 /* QLogic qed NIC Driver
   2  * Copyright (c) 2015-2017  QLogic Corporation
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and /or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #ifndef __ISCSI_COMMON__
  34 #define __ISCSI_COMMON__
  35
  36 /**********************/
  37 /* ISCSI FW CONSTANTS */
  38 /**********************/
  39
  40 /* iSCSI HSI constants */
  41 #define ISCSI_DEFAULT_MTU       (1500)
  42
  43 /* KWQ (kernel work queue) layer codes */
  44 #define ISCSI_SLOW_PATH_LAYER_CODE      (6)
  45
  46 /* iSCSI parameter defaults */
  47 #define ISCSI_DEFAULT_HEADER_DIGEST             (0)
  48 #define ISCSI_DEFAULT_DATA_DIGEST               (0)
  49 #define ISCSI_DEFAULT_INITIAL_R2T               (1)
  50 #define ISCSI_DEFAULT_IMMEDIATE_DATA            (1)
  51 #define ISCSI_DEFAULT_MAX_PDU_LENGTH            (0x2000)
  52 #define ISCSI_DEFAULT_FIRST_BURST_LENGTH        (0x10000)
  53 #define ISCSI_DEFAULT_MAX_BURST_LENGTH          (0x40000)
  54 #define ISCSI_DEFAULT_MAX_OUTSTANDING_R2T       (1)
  55
  56 /* iSCSI parameter limits */
  57 #define ISCSI_MIN_VAL_MAX_PDU_LENGTH            (0x200)
  58 #define ISCSI_MAX_VAL_MAX_PDU_LENGTH            (0xffffff)
  59 #define ISCSI_MIN_VAL_BURST_LENGTH              (0x200)
  60 #define ISCSI_MAX_VAL_BURST_LENGTH              (0xffffff)
  61 #define ISCSI_MIN_VAL_MAX_OUTSTANDING_R2T       (1)
  62 #define ISCSI_MAX_VAL_MAX_OUTSTANDING_R2T       (0xff)
  63
  64 #define ISCSI_AHS_CNTL_SIZE     4
  65
  66 #define ISCSI_WQE_NUM_SGES_SLOWIO       (0xf)
  67
  68 /* iSCSI reserved params */
  69 #define ISCSI_ITT_ALL_ONES      (0xffffffff)
  70 #define ISCSI_TTT_ALL_ONES      (0xffffffff)
  71
  72 #define ISCSI_OPTION_1_OFF_CHIP_TCP     1
  73 #define ISCSI_OPTION_2_ON_CHIP_TCP      2
  74
  75 #define ISCSI_INITIATOR_MODE    0
  76 #define ISCSI_TARGET_MODE       1
  77
  78 /* iSCSI request op codes */
  79 #define ISCSI_OPCODE_NOP_OUT            (0)
  80 #define ISCSI_OPCODE_SCSI_CMD           (1)
  81 #define ISCSI_OPCODE_TMF_REQUEST        (2)
  82 #define ISCSI_OPCODE_LOGIN_REQUEST      (3)
  83 #define ISCSI_OPCODE_TEXT_REQUEST       (4)
  84 #define ISCSI_OPCODE_DATA_OUT           (5)
  85 #define ISCSI_OPCODE_LOGOUT_REQUEST     (6)
  86
  87 /* iSCSI response/messages op codes */
  88 #define ISCSI_OPCODE_NOP_IN             (0x20)
  89 #define ISCSI_OPCODE_SCSI_RESPONSE      (0x21)
  90 #define ISCSI_OPCODE_TMF_RESPONSE       (0x22)
  91 #define ISCSI_OPCODE_LOGIN_RESPONSE     (0x23)
  92 #define ISCSI_OPCODE_TEXT_RESPONSE      (0x24)
  93 #define ISCSI_OPCODE_DATA_IN            (0x25)
  94 #define ISCSI_OPCODE_LOGOUT_RESPONSE    (0x26)
  95 #define ISCSI_OPCODE_R2T                (0x31)
  96 #define ISCSI_OPCODE_ASYNC_MSG          (0x32)
  97 #define ISCSI_OPCODE_REJECT             (0x3f)
  98
  99 /* iSCSI stages */
 100 #define ISCSI_STAGE_SECURITY_NEGOTIATION                (0)
 101 #define ISCSI_STAGE_LOGIN_OPERATIONAL_NEGOTIATION       (1)
 102 #define ISCSI_STAGE_FULL_FEATURE_PHASE                  (3)
 103
 104 /* iSCSI CQE errors */
 105 #define CQE_ERROR_BITMAP_DATA_DIGEST            (0x08)
 106 #define CQE_ERROR_BITMAP_RCV_ON_INVALID_CONN    (0x10)
 107 #define CQE_ERROR_BITMAP_DATA_TRUNCATED         (0x20)
 108
 109 /* Union of data bd_opaque/ tq_tid */
 110 union bd_opaque_tq_union {
 111         __le16 bd_opaque;
 112         __le16 tq_tid;
 113 };
 114
 115 /* ISCSI SGL entry */
 116 struct cqe_error_bitmap {
 117         u8 cqe_error_status_bits;
 118 #define CQE_ERROR_BITMAP_DIF_ERR_BITS_MASK              0x7
 119 #define CQE_ERROR_BITMAP_DIF_ERR_BITS_SHIFT             0
 120 #define CQE_ERROR_BITMAP_DATA_DIGEST_ERR_MASK           0x1
 121 #define CQE_ERROR_BITMAP_DATA_DIGEST_ERR_SHIFT          3
 122 #define CQE_ERROR_BITMAP_RCV_ON_INVALID_CONN_MASK       0x1
 123 #define CQE_ERROR_BITMAP_RCV_ON_INVALID_CONN_SHIFT      4
 124 #define CQE_ERROR_BITMAP_DATA_TRUNCATED_ERR_MASK        0x1
 125 #define CQE_ERROR_BITMAP_DATA_TRUNCATED_ERR_SHIFT       5
 126 #define CQE_ERROR_BITMAP_UNDER_RUN_ERR_MASK             0x1
 127 #define CQE_ERROR_BITMAP_UNDER_RUN_ERR_SHIFT            6
 128 #define CQE_ERROR_BITMAP_RESERVED2_MASK                 0x1
 129 #define CQE_ERROR_BITMAP_RESERVED2_SHIFT                7
 130 };
 131
 132 union cqe_error_status {
 133         u8 error_status;
 134         struct cqe_error_bitmap error_bits;
 135 };
 136
 137 /* iSCSI Login Response PDU header */
 138 struct data_hdr {
 139         __le32 data[12];
 140 };
 141
 142 struct lun_mapper_addr_reserved {
 143         struct regpair lun_mapper_addr;
 144         u8 reserved0[8];
 145 };
 146
 147 /* rdif conetxt for dif on immediate */
 148 struct dif_on_immediate_params {
 149         __le32 initial_ref_tag;
 150         __le16 application_tag;
 151         __le16 application_tag_mask;
 152         __le16 flags1;
 153 #define DIF_ON_IMMEDIATE_PARAMS_VALIDATE_GUARD_MASK             0x1
 154 #define DIF_ON_IMMEDIATE_PARAMS_VALIDATE_GUARD_SHIFT            0
 155 #define DIF_ON_IMMEDIATE_PARAMS_VALIDATE_APP_TAG_MASK           0x1
 156 #define DIF_ON_IMMEDIATE_PARAMS_VALIDATE_APP_TAG_SHIFT          1
 157 #define DIF_ON_IMMEDIATE_PARAMS_VALIDATE_REF_TAG_MASK           0x1
 158 #define DIF_ON_IMMEDIATE_PARAMS_VALIDATE_REF_TAG_SHIFT          2
 159 #define DIF_ON_IMMEDIATE_PARAMS_FORWARD_GUARD_MASK              0x1
 160 #define DIF_ON_IMMEDIATE_PARAMS_FORWARD_GUARD_SHIFT             3
 161 #define DIF_ON_IMMEDIATE_PARAMS_FORWARD_APP_TAG_MASK            0x1
 162 #define DIF_ON_IMMEDIATE_PARAMS_FORWARD_APP_TAG_SHIFT           4
 163 #define DIF_ON_IMMEDIATE_PARAMS_FORWARD_REF_TAG_MASK            0x1
 164 #define DIF_ON_IMMEDIATE_PARAMS_FORWARD_REF_TAG_SHIFT           5
 165 #define DIF_ON_IMMEDIATE_PARAMS_INTERVAL_SIZE_MASK              0x1
 166 #define DIF_ON_IMMEDIATE_PARAMS_INTERVAL_SIZE_SHIFT             6
 167 #define DIF_ON_IMMEDIATE_PARAMS_NETWORK_INTERFACE_MASK          0x1
 168 #define DIF_ON_IMMEDIATE_PARAMS_NETWORK_INTERFACE_SHIFT         7
 169 #define DIF_ON_IMMEDIATE_PARAMS_HOST_INTERFACE_MASK             0x3
 170 #define DIF_ON_IMMEDIATE_PARAMS_HOST_INTERFACE_SHIFT            8
 171 #define DIF_ON_IMMEDIATE_PARAMS_REF_TAG_MASK_MASK               0xF
 172 #define DIF_ON_IMMEDIATE_PARAMS_REF_TAG_MASK_SHIFT              10
 173 #define DIF_ON_IMMEDIATE_PARAMS_FORWARD_APP_TAG_WITH_MASK_MASK  0x1
 174 #define DIF_ON_IMMEDIATE_PARAMS_FORWARD_APP_TAG_WITH_MASK_SHIFT 14
 175 #define DIF_ON_IMMEDIATE_PARAMS_FORWARD_REF_TAG_WITH_MASK_MASK  0x1
 176 #define DIF_ON_IMMEDIATE_PARAMS_FORWARD_REF_TAG_WITH_MASK_SHIFT 15
 177         u8 flags0;
 178 #define DIF_ON_IMMEDIATE_PARAMS_RESERVED_MASK                   0x1
 179 #define DIF_ON_IMMEDIATE_PARAMS_RESERVED_SHIFT                  0
 180 #define DIF_ON_IMMEDIATE_PARAMS_IGNORE_APP_TAG_MASK             0x1
 181 #define DIF_ON_IMMEDIATE_PARAMS_IGNORE_APP_TAG_SHIFT            1
 182 #define DIF_ON_IMMEDIATE_PARAMS_INITIAL_REF_TAG_IS_VALID_MASK   0x1
 183 #define DIF_ON_IMMEDIATE_PARAMS_INITIAL_REF_TAG_IS_VALID_SHIFT  2
 184 #define DIF_ON_IMMEDIATE_PARAMS_HOST_GUARD_TYPE_MASK            0x1
 185 #define DIF_ON_IMMEDIATE_PARAMS_HOST_GUARD_TYPE_SHIFT           3
 186 #define DIF_ON_IMMEDIATE_PARAMS_PROTECTION_TYPE_MASK            0x3
 187 #define DIF_ON_IMMEDIATE_PARAMS_PROTECTION_TYPE_SHIFT           4
 188 #define DIF_ON_IMMEDIATE_PARAMS_CRC_SEED_MASK                   0x1
 189 #define DIF_ON_IMMEDIATE_PARAMS_CRC_SEED_SHIFT                  6
 190 #define DIF_ON_IMMEDIATE_PARAMS_KEEP_REF_TAG_CONST_MASK         0x1
 191 #define DIF_ON_IMMEDIATE_PARAMS_KEEP_REF_TAG_CONST_SHIFT        7
 192         u8 reserved_zero[5];
 193 };
 194
 195 /* iSCSI dif on immediate mode attributes union */
 196 union dif_configuration_params {
 197         struct lun_mapper_addr_reserved lun_mapper_address;
 198         struct dif_on_immediate_params def_dif_conf;
 199 };
 200
 201 /* Union of data/r2t sequence number */
 202 union iscsi_seq_num {
 203         __le16 data_sn;
 204         __le16 r2t_sn;
 205 };
 206
 207 /* iSCSI DIF flags */
 208 struct iscsi_dif_flags {
 209         u8 flags;
 210 #define ISCSI_DIF_FLAGS_PROT_INTERVAL_SIZE_LOG_MASK     0xF
 211 #define ISCSI_DIF_FLAGS_PROT_INTERVAL_SIZE_LOG_SHIFT    0
 212 #define ISCSI_DIF_FLAGS_DIF_TO_PEER_MASK                0x1
 213 #define ISCSI_DIF_FLAGS_DIF_TO_PEER_SHIFT               4
 214 #define ISCSI_DIF_FLAGS_HOST_INTERFACE_MASK             0x7
 215 #define ISCSI_DIF_FLAGS_HOST_INTERFACE_SHIFT            5
 216 };
 217
 218 /* The iscsi storm task context of Ystorm */
 219 struct ystorm_iscsi_task_state {
 220         struct scsi_cached_sges data_desc;
 221         struct scsi_sgl_params sgl_params;
 222         __le32 exp_r2t_sn;
 223         __le32 buffer_offset;
 224         union iscsi_seq_num seq_num;
 225         struct iscsi_dif_flags dif_flags;
 226         u8 flags;
 227 #define YSTORM_ISCSI_TASK_STATE_LOCAL_COMP_MASK         0x1
 228 #define YSTORM_ISCSI_TASK_STATE_LOCAL_COMP_SHIFT        0
 229 #define YSTORM_ISCSI_TASK_STATE_SLOW_IO_MASK            0x1
 230 #define YSTORM_ISCSI_TASK_STATE_SLOW_IO_SHIFT           1
 231 #define YSTORM_ISCSI_TASK_STATE_SET_DIF_OFFSET_MASK     0x1
 232 #define YSTORM_ISCSI_TASK_STATE_SET_DIF_OFFSET_SHIFT    2
 233 #define YSTORM_ISCSI_TASK_STATE_RESERVED0_MASK          0x1F
 234 #define YSTORM_ISCSI_TASK_STATE_RESERVED0_SHIFT         3
 235 };
 236
 237 /* The iscsi storm task context of Ystorm */
 238 struct ystorm_iscsi_task_rxmit_opt {
 239         __le32 fast_rxmit_sge_offset;
 240         __le32 scan_start_buffer_offset;
 241         __le32 fast_rxmit_buffer_offset;
 242         u8 scan_start_sgl_index;
 243         u8 fast_rxmit_sgl_index;
 244         __le16 reserved;
 245 };
 246
 247 /* iSCSI Common PDU header */
 248 struct iscsi_common_hdr {
 249         u8 hdr_status;
 250         u8 hdr_response;
 251         u8 hdr_flags;
 252         u8 hdr_first_byte;
 253 #define ISCSI_COMMON_HDR_OPCODE_MASK            0x3F
 254 #define ISCSI_COMMON_HDR_OPCODE_SHIFT           0
 255 #define ISCSI_COMMON_HDR_IMM_MASK               0x1
 256 #define ISCSI_COMMON_HDR_IMM_SHIFT              6
 257 #define ISCSI_COMMON_HDR_RSRV_MASK              0x1
 258 #define ISCSI_COMMON_HDR_RSRV_SHIFT             7
 259         __le32 hdr_second_dword;
 260 #define ISCSI_COMMON_HDR_DATA_SEG_LEN_MASK      0xFFFFFF
 261 #define ISCSI_COMMON_HDR_DATA_SEG_LEN_SHIFT     0
 262 #define ISCSI_COMMON_HDR_TOTAL_AHS_LEN_MASK     0xFF
 263 #define ISCSI_COMMON_HDR_TOTAL_AHS_LEN_SHIFT    24
 264         struct regpair lun_reserved;
 265         __le32 itt;
 266         __le32 ttt;
 267         __le32 cmdstat_sn;
 268         __le32 exp_statcmd_sn;
 269         __le32 max_cmd_sn;
 270         __le32 data[3];
 271 };
 272
 273 /* iSCSI Command PDU header */
 274 struct iscsi_cmd_hdr {
 275         __le16 reserved1;
 276         u8 flags_attr;
 277 #define ISCSI_CMD_HDR_ATTR_MASK                 0x7
 278 #define ISCSI_CMD_HDR_ATTR_SHIFT                0
 279 #define ISCSI_CMD_HDR_RSRV_MASK                 0x3
 280 #define ISCSI_CMD_HDR_RSRV_SHIFT                3
 281 #define ISCSI_CMD_HDR_WRITE_MASK                0x1
 282 #define ISCSI_CMD_HDR_WRITE_SHIFT               5
 283 #define ISCSI_CMD_HDR_READ_MASK                 0x1
 284 #define ISCSI_CMD_HDR_READ_SHIFT                6
 285 #define ISCSI_CMD_HDR_FINAL_MASK                0x1
 286 #define ISCSI_CMD_HDR_FINAL_SHIFT               7
 287         u8 hdr_first_byte;
 288 #define ISCSI_CMD_HDR_OPCODE_MASK               0x3F
 289 #define ISCSI_CMD_HDR_OPCODE_SHIFT              0
 290 #define ISCSI_CMD_HDR_IMM_MASK                  0x1
 291 #define ISCSI_CMD_HDR_IMM_SHIFT                 6
 292 #define ISCSI_CMD_HDR_RSRV1_MASK                0x1
 293 #define ISCSI_CMD_HDR_RSRV1_SHIFT               7
 294         __le32 hdr_second_dword;
 295 #define ISCSI_CMD_HDR_DATA_SEG_LEN_MASK         0xFFFFFF
 296 #define ISCSI_CMD_HDR_DATA_SEG_LEN_SHIFT        0
 297 #define ISCSI_CMD_HDR_TOTAL_AHS_LEN_MASK        0xFF
 298 #define ISCSI_CMD_HDR_TOTAL_AHS_LEN_SHIFT       24
 299         struct regpair lun;
 300         __le32 itt;
 301         __le32 expected_transfer_length;
 302         __le32 cmd_sn;
 303         __le32 exp_stat_sn;
 304         __le32 cdb[4];
 305 };
 306
 307 /* iSCSI Command PDU header with Extended CDB (Initiator Mode) */
 308 struct iscsi_ext_cdb_cmd_hdr {
 309         __le16 reserved1;
 310         u8 flags_attr;
 311 #define ISCSI_EXT_CDB_CMD_HDR_ATTR_MASK         0x7
 312 #define ISCSI_EXT_CDB_CMD_HDR_ATTR_SHIFT        0
 313 #define ISCSI_EXT_CDB_CMD_HDR_RSRV_MASK         0x3
 314 #define ISCSI_EXT_CDB_CMD_HDR_RSRV_SHIFT        3
 315 #define ISCSI_EXT_CDB_CMD_HDR_WRITE_MASK        0x1
 316 #define ISCSI_EXT_CDB_CMD_HDR_WRITE_SHIFT       5
 317 #define ISCSI_EXT_CDB_CMD_HDR_READ_MASK         0x1
 318 #define ISCSI_EXT_CDB_CMD_HDR_READ_SHIFT        6
 319 #define ISCSI_EXT_CDB_CMD_HDR_FINAL_MASK        0x1
 320 #define ISCSI_EXT_CDB_CMD_HDR_FINAL_SHIFT       7
 321         u8 opcode;
 322         __le32 hdr_second_dword;
 323 #define ISCSI_EXT_CDB_CMD_HDR_DATA_SEG_LEN_MASK         0xFFFFFF
 324 #define ISCSI_EXT_CDB_CMD_HDR_DATA_SEG_LEN_SHIFT        0
 325 #define ISCSI_EXT_CDB_CMD_HDR_CDB_SIZE_MASK             0xFF
 326 #define ISCSI_EXT_CDB_CMD_HDR_CDB_SIZE_SHIFT            24
 327         struct regpair lun;
 328         __le32 itt;
 329         __le32 expected_transfer_length;
 330         __le32 cmd_sn;
 331         __le32 exp_stat_sn;
 332         struct scsi_sge cdb_sge;
 333 };
 334
 335 /* iSCSI login request PDU header */
 336 struct iscsi_login_req_hdr {
 337         u8 version_min;
 338         u8 version_max;
 339         u8 flags_attr;
 340 #define ISCSI_LOGIN_REQ_HDR_NSG_MASK    0x3
 341 #define ISCSI_LOGIN_REQ_HDR_NSG_SHIFT   0
 342 #define ISCSI_LOGIN_REQ_HDR_CSG_MASK    0x3
 343 #define ISCSI_LOGIN_REQ_HDR_CSG_SHIFT   2
 344 #define ISCSI_LOGIN_REQ_HDR_RSRV_MASK   0x3
 345 #define ISCSI_LOGIN_REQ_HDR_RSRV_SHIFT  4
 346 #define ISCSI_LOGIN_REQ_HDR_C_MASK      0x1
 347 #define ISCSI_LOGIN_REQ_HDR_C_SHIFT     6
 348 #define ISCSI_LOGIN_REQ_HDR_T_MASK      0x1
 349 #define ISCSI_LOGIN_REQ_HDR_T_SHIFT     7
 350         u8 opcode;
 351         __le32 hdr_second_dword;
 352 #define ISCSI_LOGIN_REQ_HDR_DATA_SEG_LEN_MASK   0xFFFFFF
 353 #define ISCSI_LOGIN_REQ_HDR_DATA_SEG_LEN_SHIFT  0
 354 #define ISCSI_LOGIN_REQ_HDR_TOTAL_AHS_LEN_MASK  0xFF
 355 #define ISCSI_LOGIN_REQ_HDR_TOTAL_AHS_LEN_SHIFT 24
 356         __le32 isid_tabc;
 357         __le16 tsih;
 358         __le16 isid_d;
 359         __le32 itt;
 360         __le16 reserved1;
 361         __le16 cid;
 362         __le32 cmd_sn;
 363         __le32 exp_stat_sn;
 364         __le32 reserved2[4];
 365 };
 366
 367 /* iSCSI logout request PDU header */
 368 struct iscsi_logout_req_hdr {
 369         __le16 reserved0;
 370         u8 reason_code;
 371         u8 opcode;
 372         __le32 reserved1;
 373         __le32 reserved2[2];
 374         __le32 itt;
 375         __le16 reserved3;
 376         __le16 cid;
 377         __le32 cmd_sn;
 378         __le32 exp_stat_sn;
 379         __le32 reserved4[4];
 380 };
 381
 382 /* iSCSI Data-out PDU header */
 383 struct iscsi_data_out_hdr {
 384         __le16 reserved1;
 385         u8 flags_attr;
 386 #define ISCSI_DATA_OUT_HDR_RSRV_MASK    0x7F
 387 #define ISCSI_DATA_OUT_HDR_RSRV_SHIFT   0
 388 #define ISCSI_DATA_OUT_HDR_FINAL_MASK   0x1
 389 #define ISCSI_DATA_OUT_HDR_FINAL_SHIFT  7
 390         u8 opcode;
 391         __le32 reserved2;
 392         struct regpair lun;
 393         __le32 itt;
 394         __le32 ttt;
 395         __le32 reserved3;
 396         __le32 exp_stat_sn;
 397         __le32 reserved4;
 398         __le32 data_sn;
 399         __le32 buffer_offset;
 400         __le32 reserved5;
 401 };
 402
 403 /* iSCSI Data-in PDU header */
 404 struct iscsi_data_in_hdr {
 405         u8 status_rsvd;
 406         u8 reserved1;
 407         u8 flags;
 408 #define ISCSI_DATA_IN_HDR_STATUS_MASK           0x1
 409 #define ISCSI_DATA_IN_HDR_STATUS_SHIFT          0
 410 #define ISCSI_DATA_IN_HDR_UNDERFLOW_MASK        0x1
 411 #define ISCSI_DATA_IN_HDR_UNDERFLOW_SHIFT       1
 412 #define ISCSI_DATA_IN_HDR_OVERFLOW_MASK         0x1
 413 #define ISCSI_DATA_IN_HDR_OVERFLOW_SHIFT        2
 414 #define ISCSI_DATA_IN_HDR_RSRV_MASK             0x7
 415 #define ISCSI_DATA_IN_HDR_RSRV_SHIFT            3
 416 #define ISCSI_DATA_IN_HDR_ACK_MASK              0x1
 417 #define ISCSI_DATA_IN_HDR_ACK_SHIFT             6
 418 #define ISCSI_DATA_IN_HDR_FINAL_MASK            0x1
 419 #define ISCSI_DATA_IN_HDR_FINAL_SHIFT           7
 420         u8 opcode;
 421         __le32 reserved2;
 422         struct regpair lun;
 423         __le32 itt;
 424         __le32 ttt;
 425         __le32 stat_sn;
 426         __le32 exp_cmd_sn;
 427         __le32 max_cmd_sn;
 428         __le32 data_sn;
 429         __le32 buffer_offset;
 430         __le32 residual_count;
 431 };
 432
 433 /* iSCSI R2T PDU header */
 434 struct iscsi_r2t_hdr {
 435         u8 reserved0[3];
 436         u8 opcode;
 437         __le32 reserved2;
 438         struct regpair lun;
 439         __le32 itt;
 440         __le32 ttt;
 441         __le32 stat_sn;
 442         __le32 exp_cmd_sn;
 443         __le32 max_cmd_sn;
 444         __le32 r2t_sn;
 445         __le32 buffer_offset;
 446         __le32 desired_data_trns_len;
 447 };
 448
 449 /* iSCSI NOP-out PDU header */
 450 struct iscsi_nop_out_hdr {
 451         __le16 reserved1;
 452         u8 flags_attr;
 453 #define ISCSI_NOP_OUT_HDR_RSRV_MASK     0x7F
 454 #define ISCSI_NOP_OUT_HDR_RSRV_SHIFT    0
 455 #define ISCSI_NOP_OUT_HDR_CONST1_MASK   0x1
 456 #define ISCSI_NOP_OUT_HDR_CONST1_SHIFT  7
 457         u8 opcode;
 458         __le32 reserved2;
 459         struct regpair lun;
 460         __le32 itt;
 461         __le32 ttt;
 462         __le32 cmd_sn;
 463         __le32 exp_stat_sn;
 464         __le32 reserved3;
 465         __le32 reserved4;
 466         __le32 reserved5;
 467         __le32 reserved6;
 468 };
 469
 470 /* iSCSI NOP-in PDU header */
 471 struct iscsi_nop_in_hdr {
 472         __le16 reserved0;
 473         u8 flags_attr;
 474 #define ISCSI_NOP_IN_HDR_RSRV_MASK      0x7F
 475 #define ISCSI_NOP_IN_HDR_RSRV_SHIFT     0
 476 #define ISCSI_NOP_IN_HDR_CONST1_MASK    0x1
 477 #define ISCSI_NOP_IN_HDR_CONST1_SHIFT   7
 478         u8 opcode;
 479         __le32 hdr_second_dword;
 480 #define ISCSI_NOP_IN_HDR_DATA_SEG_LEN_MASK      0xFFFFFF
 481 #define ISCSI_NOP_IN_HDR_DATA_SEG_LEN_SHIFT     0
 482 #define ISCSI_NOP_IN_HDR_TOTAL_AHS_LEN_MASK     0xFF
 483 #define ISCSI_NOP_IN_HDR_TOTAL_AHS_LEN_SHIFT    24
 484         struct regpair lun;
 485         __le32 itt;
 486         __le32 ttt;
 487         __le32 stat_sn;
 488         __le32 exp_cmd_sn;
 489         __le32 max_cmd_sn;
 490         __le32 reserved5;
 491         __le32 reserved6;
 492         __le32 reserved7;
 493 };
 494
 495 /* iSCSI Login Response PDU header */
 496 struct iscsi_login_response_hdr {
 497         u8 version_active;
 498         u8 version_max;
 499         u8 flags_attr;
 500 #define ISCSI_LOGIN_RESPONSE_HDR_NSG_MASK       0x3
 501 #define ISCSI_LOGIN_RESPONSE_HDR_NSG_SHIFT      0
 502 #define ISCSI_LOGIN_RESPONSE_HDR_CSG_MASK       0x3
 503 #define ISCSI_LOGIN_RESPONSE_HDR_CSG_SHIFT      2
 504 #define ISCSI_LOGIN_RESPONSE_HDR_RSRV_MASK      0x3
 505 #define ISCSI_LOGIN_RESPONSE_HDR_RSRV_SHIFT     4
 506 #define ISCSI_LOGIN_RESPONSE_HDR_C_MASK         0x1
 507 #define ISCSI_LOGIN_RESPONSE_HDR_C_SHIFT        6
 508 #define ISCSI_LOGIN_RESPONSE_HDR_T_MASK         0x1
 509 #define ISCSI_LOGIN_RESPONSE_HDR_T_SHIFT        7
 510         u8 opcode;
 511         __le32 hdr_second_dword;
 512 #define ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK      0xFFFFFF
 513 #define ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_SHIFT     0
 514 #define ISCSI_LOGIN_RESPONSE_HDR_TOTAL_AHS_LEN_MASK     0xFF
 515 #define ISCSI_LOGIN_RESPONSE_HDR_TOTAL_AHS_LEN_SHIFT    24
 516         __le32 isid_tabc;
 517         __le16 tsih;
 518         __le16 isid_d;
 519         __le32 itt;
 520         __le32 reserved1;
 521         __le32 stat_sn;
 522         __le32 exp_cmd_sn;
 523         __le32 max_cmd_sn;
 524         __le16 reserved2;
 525         u8 status_detail;
 526         u8 status_class;
 527         __le32 reserved4[2];
 528 };
 529
 530 /* iSCSI Logout Response PDU header */
 531 struct iscsi_logout_response_hdr {
 532         u8 reserved1;
 533         u8 response;
 534         u8 flags;
 535         u8 opcode;
 536         __le32 hdr_second_dword;
 537 #define ISCSI_LOGOUT_RESPONSE_HDR_DATA_SEG_LEN_MASK     0xFFFFFF
 538 #define ISCSI_LOGOUT_RESPONSE_HDR_DATA_SEG_LEN_SHIFT    0
 539 #define ISCSI_LOGOUT_RESPONSE_HDR_TOTAL_AHS_LEN_MASK    0xFF
 540 #define ISCSI_LOGOUT_RESPONSE_HDR_TOTAL_AHS_LEN_SHIFT   24
 541         __le32 reserved2[2];
 542         __le32 itt;
 543         __le32 reserved3;
 544         __le32 stat_sn;
 545         __le32 exp_cmd_sn;
 546         __le32 max_cmd_sn;
 547         __le32 reserved4;
 548         __le16 time_2_retain;
 549         __le16 time_2_wait;
 550         __le32 reserved5[1];
 551 };
 552
 553 /* iSCSI Text Request PDU header */
 554 struct iscsi_text_request_hdr {
 555         __le16 reserved0;
 556         u8 flags_attr;
 557 #define ISCSI_TEXT_REQUEST_HDR_RSRV_MASK        0x3F
 558 #define ISCSI_TEXT_REQUEST_HDR_RSRV_SHIFT       0
 559 #define ISCSI_TEXT_REQUEST_HDR_C_MASK           0x1
 560 #define ISCSI_TEXT_REQUEST_HDR_C_SHIFT          6
 561 #define ISCSI_TEXT_REQUEST_HDR_F_MASK           0x1
 562 #define ISCSI_TEXT_REQUEST_HDR_F_SHIFT          7
 563         u8 opcode;
 564         __le32 hdr_second_dword;
 565 #define ISCSI_TEXT_REQUEST_HDR_DATA_SEG_LEN_MASK        0xFFFFFF
 566 #define ISCSI_TEXT_REQUEST_HDR_DATA_SEG_LEN_SHIFT       0
 567 #define ISCSI_TEXT_REQUEST_HDR_TOTAL_AHS_LEN_MASK       0xFF
 568 #define ISCSI_TEXT_REQUEST_HDR_TOTAL_AHS_LEN_SHIFT      24
 569         struct regpair lun;
 570         __le32 itt;
 571         __le32 ttt;
 572         __le32 cmd_sn;
 573         __le32 exp_stat_sn;
 574         __le32 reserved4[4];
 575 };
 576
 577 /* iSCSI Text Response PDU header */
 578 struct iscsi_text_response_hdr {
 579         __le16 reserved1;
 580         u8 flags;
 581 #define ISCSI_TEXT_RESPONSE_HDR_RSRV_MASK       0x3F
 582 #define ISCSI_TEXT_RESPONSE_HDR_RSRV_SHIFT      0
 583 #define ISCSI_TEXT_RESPONSE_HDR_C_MASK          0x1
 584 #define ISCSI_TEXT_RESPONSE_HDR_C_SHIFT         6
 585 #define ISCSI_TEXT_RESPONSE_HDR_F_MASK          0x1
 586 #define ISCSI_TEXT_RESPONSE_HDR_F_SHIFT         7
 587         u8 opcode;
 588         __le32 hdr_second_dword;
 589 #define ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK       0xFFFFFF
 590 #define ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_SHIFT      0
 591 #define ISCSI_TEXT_RESPONSE_HDR_TOTAL_AHS_LEN_MASK      0xFF
 592 #define ISCSI_TEXT_RESPONSE_HDR_TOTAL_AHS_LEN_SHIFT     24
 593         struct regpair lun;
 594         __le32 itt;
 595         __le32 ttt;
 596         __le32 stat_sn;
 597         __le32 exp_cmd_sn;
 598         __le32 max_cmd_sn;
 599         __le32 reserved4[3];
 600 };
 601
 602 /* iSCSI TMF Request PDU header */
 603 struct iscsi_tmf_request_hdr {
 604         __le16 reserved0;
 605         u8 function;
 606         u8 opcode;
 607         __le32 hdr_second_dword;
 608 #define ISCSI_TMF_REQUEST_HDR_DATA_SEG_LEN_MASK         0xFFFFFF
 609 #define ISCSI_TMF_REQUEST_HDR_DATA_SEG_LEN_SHIFT        0
 610 #define ISCSI_TMF_REQUEST_HDR_TOTAL_AHS_LEN_MASK        0xFF
 611 #define ISCSI_TMF_REQUEST_HDR_TOTAL_AHS_LEN_SHIFT       24
 612         struct regpair lun;
 613         __le32 itt;
 614         __le32 rtt;
 615         __le32 cmd_sn;
 616         __le32 exp_stat_sn;
 617         __le32 ref_cmd_sn;
 618         __le32 exp_data_sn;
 619         __le32 reserved4[2];
 620 };
 621
 622 struct iscsi_tmf_response_hdr {
 623         u8 reserved2;
 624         u8 hdr_response;
 625         u8 hdr_flags;
 626         u8 opcode;
 627         __le32 hdr_second_dword;
 628 #define ISCSI_TMF_RESPONSE_HDR_DATA_SEG_LEN_MASK        0xFFFFFF
 629 #define ISCSI_TMF_RESPONSE_HDR_DATA_SEG_LEN_SHIFT       0
 630 #define ISCSI_TMF_RESPONSE_HDR_TOTAL_AHS_LEN_MASK       0xFF
 631 #define ISCSI_TMF_RESPONSE_HDR_TOTAL_AHS_LEN_SHIFT      24
 632         struct regpair reserved0;
 633         __le32 itt;
 634         __le32 reserved1;
 635         __le32 stat_sn;
 636         __le32 exp_cmd_sn;
 637         __le32 max_cmd_sn;
 638         __le32 reserved4[3];
 639 };
 640
 641 /* iSCSI Response PDU header */
 642 struct iscsi_response_hdr {
 643         u8 hdr_status;
 644         u8 hdr_response;
 645         u8 hdr_flags;
 646         u8 opcode;
 647         __le32 hdr_second_dword;
 648 #define ISCSI_RESPONSE_HDR_DATA_SEG_LEN_MASK    0xFFFFFF
 649 #define ISCSI_RESPONSE_HDR_DATA_SEG_LEN_SHIFT   0
 650 #define ISCSI_RESPONSE_HDR_TOTAL_AHS_LEN_MASK   0xFF
 651 #define ISCSI_RESPONSE_HDR_TOTAL_AHS_LEN_SHIFT  24
 652         struct regpair lun;
 653         __le32 itt;
 654         __le32 snack_tag;
 655         __le32 stat_sn;
 656         __le32 exp_cmd_sn;
 657         __le32 max_cmd_sn;
 658         __le32 exp_data_sn;
 659         __le32 bi_residual_count;
 660         __le32 residual_count;
 661 };
 662
 663 /* iSCSI Reject PDU header */
 664 struct iscsi_reject_hdr {
 665         u8 reserved4;
 666         u8 hdr_reason;
 667         u8 hdr_flags;
 668         u8 opcode;
 669         __le32 hdr_second_dword;
 670 #define ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK      0xFFFFFF
 671 #define ISCSI_REJECT_HDR_DATA_SEG_LEN_SHIFT     0
 672 #define ISCSI_REJECT_HDR_TOTAL_AHS_LEN_MASK     0xFF
 673 #define ISCSI_REJECT_HDR_TOTAL_AHS_LEN_SHIFT    24
 674         struct regpair reserved0;
 675         __le32 all_ones;
 676         __le32 reserved2;
 677         __le32 stat_sn;
 678         __le32 exp_cmd_sn;
 679         __le32 max_cmd_sn;
 680         __le32 data_sn;
 681         __le32 reserved3[2];
 682 };
 683
 684 /* iSCSI Asynchronous Message PDU header */
 685 struct iscsi_async_msg_hdr {
 686         __le16 reserved0;
 687         u8 flags_attr;
 688 #define ISCSI_ASYNC_MSG_HDR_RSRV_MASK           0x7F
 689 #define ISCSI_ASYNC_MSG_HDR_RSRV_SHIFT          0
 690 #define ISCSI_ASYNC_MSG_HDR_CONST1_MASK         0x1
 691 #define ISCSI_ASYNC_MSG_HDR_CONST1_SHIFT        7
 692         u8 opcode;
 693         __le32 hdr_second_dword;
 694 #define ISCSI_ASYNC_MSG_HDR_DATA_SEG_LEN_MASK   0xFFFFFF
 695 #define ISCSI_ASYNC_MSG_HDR_DATA_SEG_LEN_SHIFT  0
 696 #define ISCSI_ASYNC_MSG_HDR_TOTAL_AHS_LEN_MASK  0xFF
 697 #define ISCSI_ASYNC_MSG_HDR_TOTAL_AHS_LEN_SHIFT 24
 698         struct regpair lun;
 699         __le32 all_ones;
 700         __le32 reserved1;
 701         __le32 stat_sn;
 702         __le32 exp_cmd_sn;
 703         __le32 max_cmd_sn;
 704         __le16 param1_rsrv;
 705         u8 async_vcode;
 706         u8 async_event;
 707         __le16 param3_rsrv;
 708         __le16 param2_rsrv;
 709         __le32 reserved7;
 710 };
 711
 712 /* PDU header part of Ystorm task context */
 713 union iscsi_task_hdr {
 714         struct iscsi_common_hdr common;
 715         struct data_hdr data;
 716         struct iscsi_cmd_hdr cmd;
 717         struct iscsi_ext_cdb_cmd_hdr ext_cdb_cmd;
 718         struct iscsi_login_req_hdr login_req;
 719         struct iscsi_logout_req_hdr logout_req;
 720         struct iscsi_data_out_hdr data_out;
 721         struct iscsi_data_in_hdr data_in;
 722         struct iscsi_r2t_hdr r2t;
 723         struct iscsi_nop_out_hdr nop_out;
 724         struct iscsi_nop_in_hdr nop_in;
 725         struct iscsi_login_response_hdr login_response;
 726         struct iscsi_logout_response_hdr logout_response;
 727         struct iscsi_text_request_hdr text_request;
 728         struct iscsi_text_response_hdr text_response;
 729         struct iscsi_tmf_request_hdr tmf_request;
 730         struct iscsi_tmf_response_hdr tmf_response;
 731         struct iscsi_response_hdr response;
 732         struct iscsi_reject_hdr reject;
 733         struct iscsi_async_msg_hdr async_msg;
 734 };
 735
 736 /* The iscsi storm task context of Ystorm */
 737 struct ystorm_iscsi_task_st_ctx {
 738         struct ystorm_iscsi_task_state state;
 739         struct ystorm_iscsi_task_rxmit_opt rxmit_opt;
 740         union iscsi_task_hdr pdu_hdr;
 741 };
 742
 743 struct e4_ystorm_iscsi_task_ag_ctx {
 744         u8 reserved;
 745         u8 byte1;
 746         __le16 word0;
 747         u8 flags0;
 748 #define E4_YSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_MASK        0xF
 749 #define E4_YSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_SHIFT       0
 750 #define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT0_MASK           0x1
 751 #define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT0_SHIFT          4
 752 #define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT1_MASK           0x1
 753 #define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT1_SHIFT          5
 754 #define E4_YSTORM_ISCSI_TASK_AG_CTX_VALID_MASK          0x1
 755 #define E4_YSTORM_ISCSI_TASK_AG_CTX_VALID_SHIFT         6
 756 #define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT3_MASK           0x1
 757 #define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT3_SHIFT          7
 758         u8 flags1;
 759 #define E4_YSTORM_ISCSI_TASK_AG_CTX_CF0_MASK            0x3
 760 #define E4_YSTORM_ISCSI_TASK_AG_CTX_CF0_SHIFT           0
 761 #define E4_YSTORM_ISCSI_TASK_AG_CTX_CF1_MASK            0x3
 762 #define E4_YSTORM_ISCSI_TASK_AG_CTX_CF1_SHIFT           2
 763 #define E4_YSTORM_ISCSI_TASK_AG_CTX_CF2SPECIAL_MASK     0x3
 764 #define E4_YSTORM_ISCSI_TASK_AG_CTX_CF2SPECIAL_SHIFT    4
 765 #define E4_YSTORM_ISCSI_TASK_AG_CTX_CF0EN_MASK          0x1
 766 #define E4_YSTORM_ISCSI_TASK_AG_CTX_CF0EN_SHIFT         6
 767 #define E4_YSTORM_ISCSI_TASK_AG_CTX_CF1EN_MASK          0x1
 768 #define E4_YSTORM_ISCSI_TASK_AG_CTX_CF1EN_SHIFT         7
 769         u8 flags2;
 770 #define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT4_MASK           0x1
 771 #define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT4_SHIFT          0
 772 #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE0EN_MASK        0x1
 773 #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE0EN_SHIFT       1
 774 #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK        0x1
 775 #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT       2
 776 #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE2EN_MASK        0x1
 777 #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE2EN_SHIFT       3
 778 #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK        0x1
 779 #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT       4
 780 #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK        0x1
 781 #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT       5
 782 #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK        0x1
 783 #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT       6
 784 #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE6EN_MASK        0x1
 785 #define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE6EN_SHIFT       7
 786         u8 byte2;
 787         __le32 TTT;
 788         u8 byte3;
 789         u8 byte4;
 790         __le16 word1;
 791 };
 792
 793 struct e4_mstorm_iscsi_task_ag_ctx {
 794         u8 cdu_validation;
 795         u8 byte1;
 796         __le16 task_cid;
 797         u8 flags0;
 798 #define E4_MSTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_MASK        0xF
 799 #define E4_MSTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_SHIFT       0
 800 #define E4_MSTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_MASK           0x1
 801 #define E4_MSTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_SHIFT          4
 802 #define E4_MSTORM_ISCSI_TASK_AG_CTX_BIT1_MASK                   0x1
 803 #define E4_MSTORM_ISCSI_TASK_AG_CTX_BIT1_SHIFT                  5
 804 #define E4_MSTORM_ISCSI_TASK_AG_CTX_VALID_MASK                  0x1
 805 #define E4_MSTORM_ISCSI_TASK_AG_CTX_VALID_SHIFT                 6
 806 #define E4_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_FLAG_MASK      0x1
 807 #define E4_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_FLAG_SHIFT     7
 808         u8 flags1;
 809 #define E4_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_MASK        0x3
 810 #define E4_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_SHIFT       0
 811 #define E4_MSTORM_ISCSI_TASK_AG_CTX_CF1_MASK                    0x3
 812 #define E4_MSTORM_ISCSI_TASK_AG_CTX_CF1_SHIFT                   2
 813 #define E4_MSTORM_ISCSI_TASK_AG_CTX_CF2_MASK                    0x3
 814 #define E4_MSTORM_ISCSI_TASK_AG_CTX_CF2_SHIFT                   4
 815 #define E4_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_EN_MASK     0x1
 816 #define E4_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_EN_SHIFT    6
 817 #define E4_MSTORM_ISCSI_TASK_AG_CTX_CF1EN_MASK                  0x1
 818 #define E4_MSTORM_ISCSI_TASK_AG_CTX_CF1EN_SHIFT                 7
 819         u8 flags2;
 820 #define E4_MSTORM_ISCSI_TASK_AG_CTX_CF2EN_MASK          0x1
 821 #define E4_MSTORM_ISCSI_TASK_AG_CTX_CF2EN_SHIFT         0
 822 #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE0EN_MASK        0x1
 823 #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE0EN_SHIFT       1
 824 #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK        0x1
 825 #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT       2
 826 #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE2EN_MASK        0x1
 827 #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE2EN_SHIFT       3
 828 #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK        0x1
 829 #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT       4
 830 #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK        0x1
 831 #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT       5
 832 #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK        0x1
 833 #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT       6
 834 #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE6EN_MASK        0x1
 835 #define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE6EN_SHIFT       7
 836         u8 byte2;
 837         __le32 reg0;
 838         u8 byte3;
 839         u8 byte4;
 840         __le16 word1;
 841 };
 842
 843 struct e4_ustorm_iscsi_task_ag_ctx {
 844         u8 reserved;
 845         u8 state;
 846         __le16 icid;
 847         u8 flags0;
 848 #define E4_USTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_MASK        0xF
 849 #define E4_USTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_SHIFT       0
 850 #define E4_USTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_MASK           0x1
 851 #define E4_USTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_SHIFT          4
 852 #define E4_USTORM_ISCSI_TASK_AG_CTX_BIT1_MASK                   0x1
 853 #define E4_USTORM_ISCSI_TASK_AG_CTX_BIT1_SHIFT                  5
 854 #define E4_USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_MASK          0x3
 855 #define E4_USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_SHIFT         6
 856         u8 flags1;
 857 #define E4_USTORM_ISCSI_TASK_AG_CTX_RESERVED1_MASK      0x3
 858 #define E4_USTORM_ISCSI_TASK_AG_CTX_RESERVED1_SHIFT     0
 859 #define E4_USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_MASK       0x3
 860 #define E4_USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_SHIFT      2
 861 #define E4_USTORM_ISCSI_TASK_AG_CTX_CF3_MASK            0x3
 862 #define E4_USTORM_ISCSI_TASK_AG_CTX_CF3_SHIFT           4
 863 #define E4_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_MASK   0x3
 864 #define E4_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_SHIFT  6
 865         u8 flags2;
 866 #define E4_USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_EN_MASK       0x1
 867 #define E4_USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_EN_SHIFT      0
 868 #define E4_USTORM_ISCSI_TASK_AG_CTX_DISABLE_DATA_ACKED_MASK     0x1
 869 #define E4_USTORM_ISCSI_TASK_AG_CTX_DISABLE_DATA_ACKED_SHIFT    1
 870 #define E4_USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_EN_MASK            0x1
 871 #define E4_USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_EN_SHIFT           2
 872 #define E4_USTORM_ISCSI_TASK_AG_CTX_CF3EN_MASK                  0x1
 873 #define E4_USTORM_ISCSI_TASK_AG_CTX_CF3EN_SHIFT                 3
 874 #define E4_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_EN_MASK        0x1
 875 #define E4_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_EN_SHIFT       4
 876 #define E4_USTORM_ISCSI_TASK_AG_CTX_CMP_DATA_TOTAL_EXP_EN_MASK  0x1
 877 #define E4_USTORM_ISCSI_TASK_AG_CTX_CMP_DATA_TOTAL_EXP_EN_SHIFT 5
 878 #define E4_USTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK                0x1
 879 #define E4_USTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT               6
 880 #define E4_USTORM_ISCSI_TASK_AG_CTX_CMP_CONT_RCV_EXP_EN_MASK    0x1
 881 #define E4_USTORM_ISCSI_TASK_AG_CTX_CMP_CONT_RCV_EXP_EN_SHIFT   7
 882         u8 flags3;
 883 #define E4_USTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK                0x1
 884 #define E4_USTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT               0
 885 #define E4_USTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK                0x1
 886 #define E4_USTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT               1
 887 #define E4_USTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK                0x1
 888 #define E4_USTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT               2
 889 #define E4_USTORM_ISCSI_TASK_AG_CTX_RULE6EN_MASK                0x1
 890 #define E4_USTORM_ISCSI_TASK_AG_CTX_RULE6EN_SHIFT               3
 891 #define E4_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_TYPE_MASK         0xF
 892 #define E4_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_TYPE_SHIFT        4
 893         __le32 dif_err_intervals;
 894         __le32 dif_error_1st_interval;
 895         __le32 rcv_cont_len;
 896         __le32 exp_cont_len;
 897         __le32 total_data_acked;
 898         __le32 exp_data_acked;
 899         u8 next_tid_valid;
 900         u8 byte3;
 901         __le16 word1;
 902         __le16 next_tid;
 903         __le16 word3;
 904         __le32 hdr_residual_count;
 905         __le32 exp_r2t_sn;
 906 };
 907
 908 /* The iscsi storm task context of Mstorm */
 909 struct mstorm_iscsi_task_st_ctx {
 910         struct scsi_cached_sges data_desc;
 911         struct scsi_sgl_params sgl_params;
 912         __le32 rem_task_size;
 913         __le32 data_buffer_offset;
 914         u8 task_type;
 915         struct iscsi_dif_flags dif_flags;
 916         __le16 dif_task_icid;
 917         struct regpair sense_db;
 918         __le32 expected_itt;
 919         __le32 reserved1;
 920 };
 921
 922 struct iscsi_reg1 {
 923         __le32 reg1_map;
 924 #define ISCSI_REG1_NUM_SGES_MASK        0xF
 925 #define ISCSI_REG1_NUM_SGES_SHIFT       0
 926 #define ISCSI_REG1_RESERVED1_MASK       0xFFFFFFF
 927 #define ISCSI_REG1_RESERVED1_SHIFT      4
 928 };
 929
 930 struct tqe_opaque {
 931         __le16 opaque[2];
 932 };
 933
 934 /* The iscsi storm task context of Ustorm */
 935 struct ustorm_iscsi_task_st_ctx {
 936         __le32 rem_rcv_len;
 937         __le32 exp_data_transfer_len;
 938         __le32 exp_data_sn;
 939         struct regpair lun;
 940         struct iscsi_reg1 reg1;
 941         u8 flags2;
 942 #define USTORM_ISCSI_TASK_ST_CTX_AHS_EXIST_MASK         0x1
 943 #define USTORM_ISCSI_TASK_ST_CTX_AHS_EXIST_SHIFT        0
 944 #define USTORM_ISCSI_TASK_ST_CTX_RESERVED1_MASK         0x7F
 945 #define USTORM_ISCSI_TASK_ST_CTX_RESERVED1_SHIFT        1
 946         struct iscsi_dif_flags dif_flags;
 947         __le16 reserved3;
 948         struct tqe_opaque tqe_opaque_list;
 949         __le32 reserved5;
 950         __le32 reserved6;
 951         __le32 reserved7;
 952         u8 task_type;
 953         u8 error_flags;
 954 #define USTORM_ISCSI_TASK_ST_CTX_DATA_DIGEST_ERROR_MASK         0x1
 955 #define USTORM_ISCSI_TASK_ST_CTX_DATA_DIGEST_ERROR_SHIFT        0
 956 #define USTORM_ISCSI_TASK_ST_CTX_DATA_TRUNCATED_ERROR_MASK      0x1
 957 #define USTORM_ISCSI_TASK_ST_CTX_DATA_TRUNCATED_ERROR_SHIFT     1
 958 #define USTORM_ISCSI_TASK_ST_CTX_UNDER_RUN_ERROR_MASK           0x1
 959 #define USTORM_ISCSI_TASK_ST_CTX_UNDER_RUN_ERROR_SHIFT          2
 960 #define USTORM_ISCSI_TASK_ST_CTX_RESERVED8_MASK                 0x1F
 961 #define USTORM_ISCSI_TASK_ST_CTX_RESERVED8_SHIFT                3
 962         u8 flags;
 963 #define USTORM_ISCSI_TASK_ST_CTX_CQE_WRITE_MASK                 0x3
 964 #define USTORM_ISCSI_TASK_ST_CTX_CQE_WRITE_SHIFT                0
 965 #define USTORM_ISCSI_TASK_ST_CTX_LOCAL_COMP_MASK                0x1
 966 #define USTORM_ISCSI_TASK_ST_CTX_LOCAL_COMP_SHIFT               2
 967 #define USTORM_ISCSI_TASK_ST_CTX_Q0_R2TQE_WRITE_MASK            0x1
 968 #define USTORM_ISCSI_TASK_ST_CTX_Q0_R2TQE_WRITE_SHIFT           3
 969 #define USTORM_ISCSI_TASK_ST_CTX_TOTAL_DATA_ACKED_DONE_MASK     0x1
 970 #define USTORM_ISCSI_TASK_ST_CTX_TOTAL_DATA_ACKED_DONE_SHIFT    4
 971 #define USTORM_ISCSI_TASK_ST_CTX_HQ_SCANNED_DONE_MASK           0x1
 972 #define USTORM_ISCSI_TASK_ST_CTX_HQ_SCANNED_DONE_SHIFT          5
 973 #define USTORM_ISCSI_TASK_ST_CTX_R2T2RECV_DONE_MASK             0x1
 974 #define USTORM_ISCSI_TASK_ST_CTX_R2T2RECV_DONE_SHIFT            6
 975 #define USTORM_ISCSI_TASK_ST_CTX_RESERVED0_MASK                 0x1
 976 #define USTORM_ISCSI_TASK_ST_CTX_RESERVED0_SHIFT                7
 977         u8 cq_rss_number;
 978 };
 979
 980 /* iscsi task context */
 981 struct e4_iscsi_task_context {
 982         struct ystorm_iscsi_task_st_ctx ystorm_st_context;
 983         struct e4_ystorm_iscsi_task_ag_ctx ystorm_ag_context;
 984         struct regpair ystorm_ag_padding[2];
 985         struct tdif_task_context tdif_context;
 986         struct e4_mstorm_iscsi_task_ag_ctx mstorm_ag_context;
 987         struct regpair mstorm_ag_padding[2];
 988         struct e4_ustorm_iscsi_task_ag_ctx ustorm_ag_context;
 989         struct mstorm_iscsi_task_st_ctx mstorm_st_context;
 990         struct ustorm_iscsi_task_st_ctx ustorm_st_context;
 991         struct rdif_task_context rdif_context;
 992 };
 993
 994 /* iSCSI connection offload params passed by driver to FW in ISCSI offload
 995  * ramrod.
 996  */
 997 struct iscsi_conn_offload_params {
 998         struct regpair sq_pbl_addr;
 999         struct regpair r2tq_pbl_addr;
1000         struct regpair xhq_pbl_addr;
1001         struct regpair uhq_pbl_addr;
1002         __le32 initial_ack;
1003         __le16 physical_q0;
1004         __le16 physical_q1;
1005         u8 flags;
1006 #define ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B_MASK   0x1
1007 #define ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B_SHIFT  0
1008 #define ISCSI_CONN_OFFLOAD_PARAMS_TARGET_MODE_MASK      0x1
1009 #define ISCSI_CONN_OFFLOAD_PARAMS_TARGET_MODE_SHIFT     1
1010 #define ISCSI_CONN_OFFLOAD_PARAMS_RESTRICTED_MODE_MASK  0x1
1011 #define ISCSI_CONN_OFFLOAD_PARAMS_RESTRICTED_MODE_SHIFT 2
1012 #define ISCSI_CONN_OFFLOAD_PARAMS_RESERVED1_MASK        0x1F
1013 #define ISCSI_CONN_OFFLOAD_PARAMS_RESERVED1_SHIFT       3
1014         u8 pbl_page_size_log;
1015         u8 pbe_page_size_log;
1016         u8 default_cq;
1017         __le32 stat_sn;
1018 };
1019
1020 /* iSCSI connection statistics */
1021 struct iscsi_conn_stats_params {
1022         struct regpair iscsi_tcp_tx_packets_cnt;
1023         struct regpair iscsi_tcp_tx_bytes_cnt;
1024         struct regpair iscsi_tcp_tx_rxmit_cnt;
1025         struct regpair iscsi_tcp_rx_packets_cnt;
1026         struct regpair iscsi_tcp_rx_bytes_cnt;
1027         struct regpair iscsi_tcp_rx_dup_ack_cnt;
1028         __le32 iscsi_tcp_rx_chksum_err_cnt;
1029         __le32 reserved;
1030 };
1031
1032 /* spe message header */
1033 struct iscsi_slow_path_hdr {
1034         u8 op_code;
1035         u8 flags;
1036 #define ISCSI_SLOW_PATH_HDR_RESERVED0_MASK      0xF
1037 #define ISCSI_SLOW_PATH_HDR_RESERVED0_SHIFT     0
1038 #define ISCSI_SLOW_PATH_HDR_LAYER_CODE_MASK     0x7
1039 #define ISCSI_SLOW_PATH_HDR_LAYER_CODE_SHIFT    4
1040 #define ISCSI_SLOW_PATH_HDR_RESERVED1_MASK      0x1
1041 #define ISCSI_SLOW_PATH_HDR_RESERVED1_SHIFT     7
1042 };
1043
1044 /* iSCSI connection update params passed by driver to FW in ISCSI update
1045  *ramrod.
1046  */
1047 struct iscsi_conn_update_ramrod_params {
1048         struct iscsi_slow_path_hdr hdr;
1049         __le16 conn_id;
1050         __le32 fw_cid;
1051         u8 flags;
1052 #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_HD_EN_MASK              0x1
1053 #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_HD_EN_SHIFT             0
1054 #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DD_EN_MASK              0x1
1055 #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DD_EN_SHIFT             1
1056 #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_INITIAL_R2T_MASK        0x1
1057 #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_INITIAL_R2T_SHIFT       2
1058 #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_IMMEDIATE_DATA_MASK     0x1
1059 #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_IMMEDIATE_DATA_SHIFT    3
1060 #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DIF_BLOCK_SIZE_MASK     0x1
1061 #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DIF_BLOCK_SIZE_SHIFT    4
1062 #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DIF_ON_HOST_EN_MASK     0x1
1063 #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DIF_ON_HOST_EN_SHIFT    5
1064 #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DIF_ON_IMM_EN_MASK      0x1
1065 #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DIF_ON_IMM_EN_SHIFT     6
1066 #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_LUN_MAPPER_EN_MASK      0x1
1067 #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_LUN_MAPPER_EN_SHIFT     7
1068         u8 reserved0[3];
1069         __le32 max_seq_size;
1070         __le32 max_send_pdu_length;
1071         __le32 max_recv_pdu_length;
1072         __le32 first_seq_length;
1073         __le32 exp_stat_sn;
1074         union dif_configuration_params dif_on_imme_params;
1075 };
1076
1077 /* iSCSI CQ element */
1078 struct iscsi_cqe_common {
1079         __le16 conn_id;
1080         u8 cqe_type;
1081         union cqe_error_status error_bitmap;
1082         __le32 reserved[3];
1083         union iscsi_task_hdr iscsi_hdr;
1084 };
1085
1086 /* iSCSI CQ element */
1087 struct iscsi_cqe_solicited {
1088         __le16 conn_id;
1089         u8 cqe_type;
1090         union cqe_error_status error_bitmap;
1091         __le16 itid;
1092         u8 task_type;
1093         u8 fw_dbg_field;
1094         u8 caused_conn_err;
1095         u8 reserved0[3];
1096         __le32 data_truncated_bytes;
1097         union iscsi_task_hdr iscsi_hdr;
1098 };
1099
1100 /* iSCSI CQ element */
1101 struct iscsi_cqe_unsolicited {
1102         __le16 conn_id;
1103         u8 cqe_type;
1104         union cqe_error_status error_bitmap;
1105         __le16 reserved0;
1106         u8 reserved1;
1107         u8 unsol_cqe_type;
1108         __le16 rqe_opaque;
1109         __le16 reserved2[3];
1110         union iscsi_task_hdr iscsi_hdr;
1111 };
1112
1113 /* iSCSI CQ element */
1114 union iscsi_cqe {
1115         struct iscsi_cqe_common cqe_common;
1116         struct iscsi_cqe_solicited cqe_solicited;
1117         struct iscsi_cqe_unsolicited cqe_unsolicited;
1118 };
1119
1120 /* iSCSI CQE type */
1121 enum iscsi_cqes_type {
1122         ISCSI_CQE_TYPE_SOLICITED = 1,
1123         ISCSI_CQE_TYPE_UNSOLICITED,
1124         ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE,
1125         ISCSI_CQE_TYPE_TASK_CLEANUP,
1126         ISCSI_CQE_TYPE_DUMMY,
1127         MAX_ISCSI_CQES_TYPE
1128 };
1129
1130 /* iSCSI CQE type */
1131 enum iscsi_cqe_unsolicited_type {
1132         ISCSI_CQE_UNSOLICITED_NONE,
1133         ISCSI_CQE_UNSOLICITED_SINGLE,
1134         ISCSI_CQE_UNSOLICITED_FIRST,
1135         ISCSI_CQE_UNSOLICITED_MIDDLE,
1136         ISCSI_CQE_UNSOLICITED_LAST,
1137         MAX_ISCSI_CQE_UNSOLICITED_TYPE
1138 };
1139
1140 /* iscsi debug modes */
1141 struct iscsi_debug_modes {
1142         u8 flags;
1143 #define ISCSI_DEBUG_MODES_ASSERT_IF_RX_CONN_ERROR_MASK                  0x1
1144 #define ISCSI_DEBUG_MODES_ASSERT_IF_RX_CONN_ERROR_SHIFT                 0
1145 #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_RESET_MASK                     0x1
1146 #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_RESET_SHIFT                    1
1147 #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_FIN_MASK                       0x1
1148 #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_FIN_SHIFT                      2
1149 #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_CLEANUP_MASK                   0x1
1150 #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_CLEANUP_SHIFT                  3
1151 #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_REJECT_OR_ASYNC_MASK           0x1
1152 #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_REJECT_OR_ASYNC_SHIFT          4
1153 #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_NOP_MASK                       0x1
1154 #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_NOP_SHIFT                      5
1155 #define ISCSI_DEBUG_MODES_ASSERT_IF_DIF_OR_DATA_DIGEST_ERROR_MASK       0x1
1156 #define ISCSI_DEBUG_MODES_ASSERT_IF_DIF_OR_DATA_DIGEST_ERROR_SHIFT      6
1157 #define ISCSI_DEBUG_MODES_ASSERT_IF_HQ_CORRUPT_MASK                     0x1
1158 #define ISCSI_DEBUG_MODES_ASSERT_IF_HQ_CORRUPT_SHIFT                    7
1159 };
1160
1161 /* iSCSI kernel completion queue IDs */
1162 enum iscsi_eqe_opcode {
1163         ISCSI_EVENT_TYPE_INIT_FUNC = 0,
1164         ISCSI_EVENT_TYPE_DESTROY_FUNC,
1165         ISCSI_EVENT_TYPE_OFFLOAD_CONN,
1166         ISCSI_EVENT_TYPE_UPDATE_CONN,
1167         ISCSI_EVENT_TYPE_CLEAR_SQ,
1168         ISCSI_EVENT_TYPE_TERMINATE_CONN,
1169         ISCSI_EVENT_TYPE_MAC_UPDATE_CONN,
1170         ISCSI_EVENT_TYPE_COLLECT_STATS_CONN,
1171         ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE,
1172         ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE,
1173         ISCSI_EVENT_TYPE_START_OF_ERROR_TYPES = 10,
1174         ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD,
1175         ISCSI_EVENT_TYPE_ASYN_CLOSE_RCVD,
1176         ISCSI_EVENT_TYPE_ASYN_SYN_RCVD,
1177         ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME,
1178         ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT,
1179         ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT,
1180         ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2,
1181         ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR,
1182         ISCSI_EVENT_TYPE_TCP_CONN_ERROR,
1183         MAX_ISCSI_EQE_OPCODE
1184 };
1185
1186 /* iSCSI EQE and CQE completion status */
1187 enum iscsi_error_types {
1188         ISCSI_STATUS_NONE = 0,
1189         ISCSI_CQE_ERROR_UNSOLICITED_RCV_ON_INVALID_CONN = 1,
1190         ISCSI_CONN_ERROR_TASK_CID_MISMATCH,
1191         ISCSI_CONN_ERROR_TASK_NOT_VALID,
1192         ISCSI_CONN_ERROR_RQ_RING_IS_FULL,
1193         ISCSI_CONN_ERROR_CMDQ_RING_IS_FULL,
1194         ISCSI_CONN_ERROR_HQE_CACHING_FAILED,
1195         ISCSI_CONN_ERROR_HEADER_DIGEST_ERROR,
1196         ISCSI_CONN_ERROR_LOCAL_COMPLETION_ERROR,
1197         ISCSI_CONN_ERROR_DATA_OVERRUN,
1198         ISCSI_CONN_ERROR_OUT_OF_SGES_ERROR,
1199         ISCSI_CONN_ERROR_IP_OPTIONS_ERROR,
1200         ISCSI_CONN_ERROR_PRS_ERRORS,
1201         ISCSI_CONN_ERROR_CONNECT_INVALID_TCP_OPTION,
1202         ISCSI_CONN_ERROR_TCP_IP_FRAGMENT_ERROR,
1203         ISCSI_CONN_ERROR_PROTOCOL_ERR_AHS_LEN,
1204         ISCSI_CONN_ERROR_PROTOCOL_ERR_AHS_TYPE,
1205         ISCSI_CONN_ERROR_PROTOCOL_ERR_ITT_OUT_OF_RANGE,
1206         ISCSI_CONN_ERROR_PROTOCOL_ERR_TTT_OUT_OF_RANGE,
1207         ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_EXCEEDS_PDU_SIZE,
1208         ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE,
1209         ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE_BEFORE_UPDATE,
1210         ISCSI_CONN_ERROR_UNVALID_NOPIN_DSL,
1211         ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_CARRIES_NO_DATA,
1212         ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SN,
1213         ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_IN_TTT,
1214         ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_OUT_ITT,
1215         ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_TTT,
1216         ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_BUFFER_OFFSET,
1217         ISCSI_CONN_ERROR_PROTOCOL_ERR_BUFFER_OFFSET_OOO,
1218         ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_SN,
1219         ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0,
1220         ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1,
1221         ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_2,
1222         ISCSI_CONN_ERROR_PROTOCOL_ERR_LUN,
1223         ISCSI_CONN_ERROR_PROTOCOL_ERR_F_BIT_ZERO,
1224         ISCSI_CONN_ERROR_PROTOCOL_ERR_F_BIT_ZERO_S_BIT_ONE,
1225         ISCSI_CONN_ERROR_PROTOCOL_ERR_EXP_STAT_SN,
1226         ISCSI_CONN_ERROR_PROTOCOL_ERR_DSL_NOT_ZERO,
1227         ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_DSL,
1228         ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_TOO_BIG,
1229         ISCSI_CONN_ERROR_PROTOCOL_ERR_OUTSTANDING_R2T_COUNT,
1230         ISCSI_CONN_ERROR_PROTOCOL_ERR_DIF_TX,
1231         ISCSI_CONN_ERROR_SENSE_DATA_LENGTH,
1232         ISCSI_CONN_ERROR_DATA_PLACEMENT_ERROR,
1233         ISCSI_CONN_ERROR_INVALID_ITT,
1234         ISCSI_ERROR_UNKNOWN,
1235         MAX_ISCSI_ERROR_TYPES
1236 };
1237
1238 /* iSCSI Ramrod Command IDs */
1239 enum iscsi_ramrod_cmd_id {
1240         ISCSI_RAMROD_CMD_ID_UNUSED = 0,
1241         ISCSI_RAMROD_CMD_ID_INIT_FUNC = 1,
1242         ISCSI_RAMROD_CMD_ID_DESTROY_FUNC = 2,
1243         ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN = 3,
1244         ISCSI_RAMROD_CMD_ID_UPDATE_CONN = 4,
1245         ISCSI_RAMROD_CMD_ID_TERMINATION_CONN = 5,
1246         ISCSI_RAMROD_CMD_ID_CLEAR_SQ = 6,
1247         ISCSI_RAMROD_CMD_ID_MAC_UPDATE = 7,
1248         ISCSI_RAMROD_CMD_ID_CONN_STATS = 8,
1249         MAX_ISCSI_RAMROD_CMD_ID
1250 };
1251
1252 /* iSCSI connection termination request */
1253 struct iscsi_spe_conn_mac_update {
1254         struct iscsi_slow_path_hdr hdr;
1255         __le16 conn_id;
1256         __le32 fw_cid;
1257         __le16 remote_mac_addr_lo;
1258         __le16 remote_mac_addr_mid;
1259         __le16 remote_mac_addr_hi;
1260         u8 reserved0[2];
1261 };
1262
1263 /* iSCSI and TCP connection (Option 1) offload params passed by driver to FW in
1264  * iSCSI offload ramrod.
1265  */
1266 struct iscsi_spe_conn_offload {
1267         struct iscsi_slow_path_hdr hdr;
1268         __le16 conn_id;
1269         __le32 fw_cid;
1270         struct iscsi_conn_offload_params iscsi;
1271         struct tcp_offload_params tcp;
1272 };
1273
1274 /* iSCSI and TCP connection(Option 2) offload params passed by driver to FW in
1275  * iSCSI offload ramrod.
1276  */
1277 struct iscsi_spe_conn_offload_option2 {
1278         struct iscsi_slow_path_hdr hdr;
1279         __le16 conn_id;
1280         __le32 fw_cid;
1281         struct iscsi_conn_offload_params iscsi;
1282         struct tcp_offload_params_opt2 tcp;
1283 };
1284
1285 /* iSCSI collect connection statistics request */
1286 struct iscsi_spe_conn_statistics {
1287         struct iscsi_slow_path_hdr hdr;
1288         __le16 conn_id;
1289         __le32 fw_cid;
1290         u8 reset_stats;
1291         u8 reserved0[7];
1292         struct regpair stats_cnts_addr;
1293 };
1294
1295 /* iSCSI connection termination request */
1296 struct iscsi_spe_conn_termination {
1297         struct iscsi_slow_path_hdr hdr;
1298         __le16 conn_id;
1299         __le32 fw_cid;
1300         u8 abortive;
1301         u8 reserved0[7];
1302         struct regpair queue_cnts_addr;
1303         struct regpair query_params_addr;
1304 };
1305
1306 /* iSCSI firmware function destroy parameters */
1307 struct iscsi_spe_func_dstry {
1308         struct iscsi_slow_path_hdr hdr;
1309         __le16 reserved0;
1310         __le32 reserved1;
1311 };
1312
1313 /* iSCSI firmware function init parameters */
1314 struct iscsi_spe_func_init {
1315         struct iscsi_slow_path_hdr hdr;
1316         __le16 half_way_close_timeout;
1317         u8 num_sq_pages_in_ring;
1318         u8 num_r2tq_pages_in_ring;
1319         u8 num_uhq_pages_in_ring;
1320         u8 ll2_rx_queue_id;
1321         u8 flags;
1322 #define ISCSI_SPE_FUNC_INIT_COUNTERS_EN_MASK    0x1
1323 #define ISCSI_SPE_FUNC_INIT_COUNTERS_EN_SHIFT   0
1324 #define ISCSI_SPE_FUNC_INIT_RESERVED0_MASK      0x7F
1325 #define ISCSI_SPE_FUNC_INIT_RESERVED0_SHIFT     1
1326         struct iscsi_debug_modes debug_mode;
1327         __le16 reserved1;
1328         __le32 reserved2;
1329         struct scsi_init_func_params func_params;
1330         struct scsi_init_func_queues q_params;
1331 };
1332
1333 /* iSCSI task type */
1334 enum iscsi_task_type {
1335         ISCSI_TASK_TYPE_INITIATOR_WRITE,
1336         ISCSI_TASK_TYPE_INITIATOR_READ,
1337         ISCSI_TASK_TYPE_MIDPATH,
1338         ISCSI_TASK_TYPE_UNSOLIC,
1339         ISCSI_TASK_TYPE_EXCHCLEANUP,
1340         ISCSI_TASK_TYPE_IRRELEVANT,
1341         ISCSI_TASK_TYPE_TARGET_WRITE,
1342         ISCSI_TASK_TYPE_TARGET_READ,
1343         ISCSI_TASK_TYPE_TARGET_RESPONSE,
1344         ISCSI_TASK_TYPE_LOGIN_RESPONSE,
1345         ISCSI_TASK_TYPE_TARGET_IMM_W_DIF,
1346         MAX_ISCSI_TASK_TYPE
1347 };
1348
1349 /* iSCSI DesiredDataTransferLength/ttt union */
1350 union iscsi_ttt_txlen_union {
1351         __le32 desired_tx_len;
1352         __le32 ttt;
1353 };
1354
1355 /* iSCSI uHQ element */
1356 struct iscsi_uhqe {
1357         __le32 reg1;
1358 #define ISCSI_UHQE_PDU_PAYLOAD_LEN_MASK         0xFFFFF
1359 #define ISCSI_UHQE_PDU_PAYLOAD_LEN_SHIFT        0
1360 #define ISCSI_UHQE_LOCAL_COMP_MASK              0x1
1361 #define ISCSI_UHQE_LOCAL_COMP_SHIFT             20
1362 #define ISCSI_UHQE_TOGGLE_BIT_MASK              0x1
1363 #define ISCSI_UHQE_TOGGLE_BIT_SHIFT             21
1364 #define ISCSI_UHQE_PURE_PAYLOAD_MASK            0x1
1365 #define ISCSI_UHQE_PURE_PAYLOAD_SHIFT           22
1366 #define ISCSI_UHQE_LOGIN_RESPONSE_PDU_MASK      0x1
1367 #define ISCSI_UHQE_LOGIN_RESPONSE_PDU_SHIFT     23
1368 #define ISCSI_UHQE_TASK_ID_HI_MASK              0xFF
1369 #define ISCSI_UHQE_TASK_ID_HI_SHIFT             24
1370         __le32 reg2;
1371 #define ISCSI_UHQE_BUFFER_OFFSET_MASK   0xFFFFFF
1372 #define ISCSI_UHQE_BUFFER_OFFSET_SHIFT  0
1373 #define ISCSI_UHQE_TASK_ID_LO_MASK      0xFF
1374 #define ISCSI_UHQE_TASK_ID_LO_SHIFT     24
1375 };
1376
1377 /* iSCSI WQ element */
1378 struct iscsi_wqe {
1379         __le16 task_id;
1380         u8 flags;
1381 #define ISCSI_WQE_WQE_TYPE_MASK         0x7
1382 #define ISCSI_WQE_WQE_TYPE_SHIFT        0
1383 #define ISCSI_WQE_NUM_SGES_MASK         0xF
1384 #define ISCSI_WQE_NUM_SGES_SHIFT        3
1385 #define ISCSI_WQE_RESPONSE_MASK         0x1
1386 #define ISCSI_WQE_RESPONSE_SHIFT        7
1387         struct iscsi_dif_flags prot_flags;
1388         __le32 contlen_cdbsize;
1389 #define ISCSI_WQE_CONT_LEN_MASK         0xFFFFFF
1390 #define ISCSI_WQE_CONT_LEN_SHIFT        0
1391 #define ISCSI_WQE_CDB_SIZE_MASK         0xFF
1392 #define ISCSI_WQE_CDB_SIZE_SHIFT        24
1393 };
1394
1395 /* iSCSI wqe type */
1396 enum iscsi_wqe_type {
1397         ISCSI_WQE_TYPE_NORMAL,
1398         ISCSI_WQE_TYPE_TASK_CLEANUP,
1399         ISCSI_WQE_TYPE_MIDDLE_PATH,
1400         ISCSI_WQE_TYPE_LOGIN,
1401         ISCSI_WQE_TYPE_FIRST_R2T_CONT,
1402         ISCSI_WQE_TYPE_NONFIRST_R2T_CONT,
1403         ISCSI_WQE_TYPE_RESPONSE,
1404         MAX_ISCSI_WQE_TYPE
1405 };
1406
1407 /* iSCSI xHQ element */
1408 struct iscsi_xhqe {
1409         union iscsi_ttt_txlen_union ttt_or_txlen;
1410         __le32 exp_stat_sn;
1411         struct iscsi_dif_flags prot_flags;
1412         u8 total_ahs_length;
1413         u8 opcode;
1414         u8 flags;
1415 #define ISCSI_XHQE_FINAL_MASK           0x1
1416 #define ISCSI_XHQE_FINAL_SHIFT          0
1417 #define ISCSI_XHQE_STATUS_BIT_MASK      0x1
1418 #define ISCSI_XHQE_STATUS_BIT_SHIFT     1
1419 #define ISCSI_XHQE_NUM_SGES_MASK        0xF
1420 #define ISCSI_XHQE_NUM_SGES_SHIFT       2
1421 #define ISCSI_XHQE_RESERVED0_MASK       0x3
1422 #define ISCSI_XHQE_RESERVED0_SHIFT      6
1423         union iscsi_seq_num seq_num;
1424         __le16 reserved1;
1425 };
1426
1427 /* Per PF iSCSI receive path statistics - mStorm RAM structure */
1428 struct mstorm_iscsi_stats_drv {
1429         struct regpair iscsi_rx_dropped_pdus_task_not_valid;
1430         struct regpair iscsi_rx_dup_ack_cnt;
1431 };
1432
1433 /* Per PF iSCSI transmit path statistics - pStorm RAM structure */
1434 struct pstorm_iscsi_stats_drv {
1435         struct regpair iscsi_tx_bytes_cnt;
1436         struct regpair iscsi_tx_packet_cnt;
1437 };
1438
1439 /* Per PF iSCSI receive path statistics - tStorm RAM structure */
1440 struct tstorm_iscsi_stats_drv {
1441         struct regpair iscsi_rx_bytes_cnt;
1442         struct regpair iscsi_rx_packet_cnt;
1443         struct regpair iscsi_rx_new_ooo_isle_events_cnt;
1444         struct regpair iscsi_rx_tcp_payload_bytes_cnt;
1445         struct regpair iscsi_rx_tcp_pkt_cnt;
1446         struct regpair iscsi_rx_pure_ack_cnt;
1447         __le32 iscsi_cmdq_threshold_cnt;
1448         __le32 iscsi_rq_threshold_cnt;
1449         __le32 iscsi_immq_threshold_cnt;
1450 };
1451
1452 /* Per PF iSCSI receive path statistics - uStorm RAM structure */
1453 struct ustorm_iscsi_stats_drv {
1454         struct regpair iscsi_rx_data_pdu_cnt;
1455         struct regpair iscsi_rx_r2t_pdu_cnt;
1456         struct regpair iscsi_rx_total_pdu_cnt;
1457 };
1458
1459 /* Per PF iSCSI transmit path statistics - xStorm RAM structure */
1460 struct xstorm_iscsi_stats_drv {
1461         struct regpair iscsi_tx_go_to_slow_start_event_cnt;
1462         struct regpair iscsi_tx_fast_retransmit_event_cnt;
1463         struct regpair iscsi_tx_pure_ack_cnt;
1464         struct regpair iscsi_tx_delayed_ack_cnt;
1465 };
1466
1467 /* Per PF iSCSI transmit path statistics - yStorm RAM structure */
1468 struct ystorm_iscsi_stats_drv {
1469         struct regpair iscsi_tx_data_pdu_cnt;
1470         struct regpair iscsi_tx_r2t_pdu_cnt;
1471         struct regpair iscsi_tx_total_pdu_cnt;
1472         struct regpair iscsi_tx_tcp_payload_bytes_cnt;
1473         struct regpair iscsi_tx_tcp_pkt_cnt;
1474 };
1475
1476 struct e4_tstorm_iscsi_task_ag_ctx {
1477         u8 byte0;
1478         u8 byte1;
1479         __le16 word0;
1480         u8 flags0;
1481 #define E4_TSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_MASK        0xF
1482 #define E4_TSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_SHIFT       0
1483 #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT0_MASK           0x1
1484 #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT0_SHIFT          4
1485 #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT1_MASK           0x1
1486 #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT1_SHIFT          5
1487 #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT2_MASK           0x1
1488 #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT2_SHIFT          6
1489 #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT3_MASK           0x1
1490 #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT3_SHIFT          7
1491         u8 flags1;
1492 #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT4_MASK   0x1
1493 #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT4_SHIFT  0
1494 #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT5_MASK   0x1
1495 #define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT5_SHIFT  1
1496 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF0_MASK    0x3
1497 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF0_SHIFT   2
1498 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF1_MASK    0x3
1499 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF1_SHIFT   4
1500 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF2_MASK    0x3
1501 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF2_SHIFT   6
1502         u8 flags2;
1503 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF3_MASK    0x3
1504 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF3_SHIFT   0
1505 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF4_MASK    0x3
1506 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF4_SHIFT   2
1507 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF5_MASK    0x3
1508 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF5_SHIFT   4
1509 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF6_MASK    0x3
1510 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF6_SHIFT   6
1511         u8 flags3;
1512 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF7_MASK    0x3
1513 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF7_SHIFT   0
1514 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF0EN_MASK  0x1
1515 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF0EN_SHIFT 2
1516 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF1EN_MASK  0x1
1517 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF1EN_SHIFT 3
1518 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF2EN_MASK  0x1
1519 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF2EN_SHIFT 4
1520 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF3EN_MASK  0x1
1521 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF3EN_SHIFT 5
1522 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF4EN_MASK  0x1
1523 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF4EN_SHIFT 6
1524 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF5EN_MASK  0x1
1525 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF5EN_SHIFT 7
1526         u8 flags4;
1527 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF6EN_MASK          0x1
1528 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF6EN_SHIFT         0
1529 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF7EN_MASK          0x1
1530 #define E4_TSTORM_ISCSI_TASK_AG_CTX_CF7EN_SHIFT         1
1531 #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE0EN_MASK        0x1
1532 #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE0EN_SHIFT       2
1533 #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK        0x1
1534 #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT       3
1535 #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE2EN_MASK        0x1
1536 #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE2EN_SHIFT       4
1537 #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK        0x1
1538 #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT       5
1539 #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK        0x1
1540 #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT       6
1541 #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK        0x1
1542 #define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT       7
1543         u8 byte2;
1544         __le16 word1;
1545         __le32 reg0;
1546         u8 byte3;
1547         u8 byte4;
1548         __le16 word2;
1549         __le16 word3;
1550         __le16 word4;
1551         __le32 reg1;
1552         __le32 reg2;
1553 };
1554
1555 /* iSCSI doorbell data */
1556 struct iscsi_db_data {
1557         u8 params;
1558 #define ISCSI_DB_DATA_DEST_MASK         0x3
1559 #define ISCSI_DB_DATA_DEST_SHIFT        0
1560 #define ISCSI_DB_DATA_AGG_CMD_MASK      0x3
1561 #define ISCSI_DB_DATA_AGG_CMD_SHIFT     2
1562 #define ISCSI_DB_DATA_BYPASS_EN_MASK    0x1
1563 #define ISCSI_DB_DATA_BYPASS_EN_SHIFT   4
1564 #define ISCSI_DB_DATA_RESERVED_MASK     0x1
1565 #define ISCSI_DB_DATA_RESERVED_SHIFT    5
1566 #define ISCSI_DB_DATA_AGG_VAL_SEL_MASK  0x3
1567 #define ISCSI_DB_DATA_AGG_VAL_SEL_SHIFT 6
1568         u8 agg_flags;
1569         __le16 sq_prod;
1570 };
1571
1572 #endif /* __ISCSI_COMMON__ */