iscsi_common.h

   1/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
   2/* QLogic qed NIC Driver
   3 * Copyright (c) 2015-2017  QLogic Corporation
   4 * Copyright (c) 2019-2020 Marvell International Ltd.
   5 */
   6
   7#ifndef __ISCSI_COMMON__
   8#define __ISCSI_COMMON__
   9
  10/**********************/
  11/* ISCSI FW CONSTANTS */
  12/**********************/
  13
  14/* iSCSI HSI constants */
  15#define ISCSI_DEFAULT_MTU	(1500)
  16
  17/* KWQ (kernel work queue) layer codes */
  18#define ISCSI_SLOW_PATH_LAYER_CODE	(6)
  19
  20/* iSCSI parameter defaults */
  21#define ISCSI_DEFAULT_HEADER_DIGEST		(0)
  22#define ISCSI_DEFAULT_DATA_DIGEST		(0)
  23#define ISCSI_DEFAULT_INITIAL_R2T		(1)
  24#define ISCSI_DEFAULT_IMMEDIATE_DATA		(1)
  25#define ISCSI_DEFAULT_MAX_PDU_LENGTH		(0x2000)
  26#define ISCSI_DEFAULT_FIRST_BURST_LENGTH	(0x10000)
  27#define ISCSI_DEFAULT_MAX_BURST_LENGTH		(0x40000)
  28#define ISCSI_DEFAULT_MAX_OUTSTANDING_R2T	(1)
  29
  30/* iSCSI parameter limits */
  31#define ISCSI_MIN_VAL_MAX_PDU_LENGTH		(0x200)
  32#define ISCSI_MAX_VAL_MAX_PDU_LENGTH		(0xffffff)
  33#define ISCSI_MIN_VAL_BURST_LENGTH		(0x200)
  34#define ISCSI_MAX_VAL_BURST_LENGTH		(0xffffff)
  35#define ISCSI_MIN_VAL_MAX_OUTSTANDING_R2T	(1)
  36#define ISCSI_MAX_VAL_MAX_OUTSTANDING_R2T	(0xff)
  37
  38#define ISCSI_AHS_CNTL_SIZE	4
  39
  40#define ISCSI_WQE_NUM_SGES_SLOWIO	(0xf)
  41
  42/* iSCSI reserved params */
  43#define ISCSI_ITT_ALL_ONES	(0xffffffff)
  44#define ISCSI_TTT_ALL_ONES	(0xffffffff)
  45
  46#define ISCSI_OPTION_1_OFF_CHIP_TCP	1
  47#define ISCSI_OPTION_2_ON_CHIP_TCP	2
  48
  49#define ISCSI_INITIATOR_MODE	0
  50#define ISCSI_TARGET_MODE	1
  51
  52/* iSCSI request op codes */
  53#define ISCSI_OPCODE_NOP_OUT		(0)
  54#define ISCSI_OPCODE_SCSI_CMD		(1)
  55#define ISCSI_OPCODE_TMF_REQUEST	(2)
  56#define ISCSI_OPCODE_LOGIN_REQUEST	(3)
  57#define ISCSI_OPCODE_TEXT_REQUEST	(4)
  58#define ISCSI_OPCODE_DATA_OUT		(5)
  59#define ISCSI_OPCODE_LOGOUT_REQUEST	(6)
  60
  61/* iSCSI response/messages op codes */
  62#define ISCSI_OPCODE_NOP_IN		(0x20)
  63#define ISCSI_OPCODE_SCSI_RESPONSE	(0x21)
  64#define ISCSI_OPCODE_TMF_RESPONSE	(0x22)
  65#define ISCSI_OPCODE_LOGIN_RESPONSE	(0x23)
  66#define ISCSI_OPCODE_TEXT_RESPONSE	(0x24)
  67#define ISCSI_OPCODE_DATA_IN		(0x25)
  68#define ISCSI_OPCODE_LOGOUT_RESPONSE	(0x26)
  69#define ISCSI_OPCODE_R2T		(0x31)
  70#define ISCSI_OPCODE_ASYNC_MSG		(0x32)
  71#define ISCSI_OPCODE_REJECT		(0x3f)
  72
  73/* iSCSI stages */
  74#define ISCSI_STAGE_SECURITY_NEGOTIATION		(0)
  75#define ISCSI_STAGE_LOGIN_OPERATIONAL_NEGOTIATION	(1)
  76#define ISCSI_STAGE_FULL_FEATURE_PHASE			(3)
  77
  78/* iSCSI CQE errors */
  79#define CQE_ERROR_BITMAP_DATA_DIGEST		(0x08)
  80#define CQE_ERROR_BITMAP_RCV_ON_INVALID_CONN	(0x10)
  81#define CQE_ERROR_BITMAP_DATA_TRUNCATED		(0x20)
  82
  83/* Union of data bd_opaque/ tq_tid */
  84union bd_opaque_tq_union {
  85	__le16 bd_opaque;
  86	__le16 tq_tid;
  87};
  88
  89/* ISCSI SGL entry */
  90struct cqe_error_bitmap {
  91	u8 cqe_error_status_bits;
  92#define CQE_ERROR_BITMAP_DIF_ERR_BITS_MASK		0x7
  93#define CQE_ERROR_BITMAP_DIF_ERR_BITS_SHIFT		0
  94#define CQE_ERROR_BITMAP_DATA_DIGEST_ERR_MASK		0x1
  95#define CQE_ERROR_BITMAP_DATA_DIGEST_ERR_SHIFT		3
  96#define CQE_ERROR_BITMAP_RCV_ON_INVALID_CONN_MASK	0x1
  97#define CQE_ERROR_BITMAP_RCV_ON_INVALID_CONN_SHIFT	4
  98#define CQE_ERROR_BITMAP_DATA_TRUNCATED_ERR_MASK	0x1
  99#define CQE_ERROR_BITMAP_DATA_TRUNCATED_ERR_SHIFT	5
 100#define CQE_ERROR_BITMAP_UNDER_RUN_ERR_MASK		0x1
 101#define CQE_ERROR_BITMAP_UNDER_RUN_ERR_SHIFT		6
 102#define CQE_ERROR_BITMAP_RESERVED2_MASK			0x1
 103#define CQE_ERROR_BITMAP_RESERVED2_SHIFT		7
 104};
 105
 106union cqe_error_status {
 107	u8 error_status;
 108	struct cqe_error_bitmap error_bits;
 109};
 110
 111/* iSCSI Login Response PDU header */
 112struct data_hdr {
 113	__le32 data[12];
 114};
 115
 116struct lun_mapper_addr_reserved {
 117	struct regpair lun_mapper_addr;
 118	u8 reserved0[8];
 119};
 120
 121/* rdif conetxt for dif on immediate */
 122struct dif_on_immediate_params {
 123	__le32 initial_ref_tag;
 124	__le16 application_tag;
 125	__le16 application_tag_mask;
 126	__le16 flags1;
 127#define DIF_ON_IMMEDIATE_PARAMS_VALIDATE_GUARD_MASK		0x1
 128#define DIF_ON_IMMEDIATE_PARAMS_VALIDATE_GUARD_SHIFT		0
 129#define DIF_ON_IMMEDIATE_PARAMS_VALIDATE_APP_TAG_MASK		0x1
 130#define DIF_ON_IMMEDIATE_PARAMS_VALIDATE_APP_TAG_SHIFT		1
 131#define DIF_ON_IMMEDIATE_PARAMS_VALIDATE_REF_TAG_MASK		0x1
 132#define DIF_ON_IMMEDIATE_PARAMS_VALIDATE_REF_TAG_SHIFT		2
 133#define DIF_ON_IMMEDIATE_PARAMS_FORWARD_GUARD_MASK		0x1
 134#define DIF_ON_IMMEDIATE_PARAMS_FORWARD_GUARD_SHIFT		3
 135#define DIF_ON_IMMEDIATE_PARAMS_FORWARD_APP_TAG_MASK		0x1
 136#define DIF_ON_IMMEDIATE_PARAMS_FORWARD_APP_TAG_SHIFT		4
 137#define DIF_ON_IMMEDIATE_PARAMS_FORWARD_REF_TAG_MASK		0x1
 138#define DIF_ON_IMMEDIATE_PARAMS_FORWARD_REF_TAG_SHIFT		5
 139#define DIF_ON_IMMEDIATE_PARAMS_INTERVAL_SIZE_MASK		0x1
 140#define DIF_ON_IMMEDIATE_PARAMS_INTERVAL_SIZE_SHIFT		6
 141#define DIF_ON_IMMEDIATE_PARAMS_NETWORK_INTERFACE_MASK		0x1
 142#define DIF_ON_IMMEDIATE_PARAMS_NETWORK_INTERFACE_SHIFT		7
 143#define DIF_ON_IMMEDIATE_PARAMS_HOST_INTERFACE_MASK		0x3
 144#define DIF_ON_IMMEDIATE_PARAMS_HOST_INTERFACE_SHIFT		8
 145#define DIF_ON_IMMEDIATE_PARAMS_REF_TAG_MASK_MASK		0xF
 146#define DIF_ON_IMMEDIATE_PARAMS_REF_TAG_MASK_SHIFT		10
 147#define DIF_ON_IMMEDIATE_PARAMS_FORWARD_APP_TAG_WITH_MASK_MASK	0x1
 148#define DIF_ON_IMMEDIATE_PARAMS_FORWARD_APP_TAG_WITH_MASK_SHIFT	14
 149#define DIF_ON_IMMEDIATE_PARAMS_FORWARD_REF_TAG_WITH_MASK_MASK	0x1
 150#define DIF_ON_IMMEDIATE_PARAMS_FORWARD_REF_TAG_WITH_MASK_SHIFT	15
 151	u8 flags0;
 152#define DIF_ON_IMMEDIATE_PARAMS_RESERVED_MASK			0x1
 153#define DIF_ON_IMMEDIATE_PARAMS_RESERVED_SHIFT			0
 154#define DIF_ON_IMMEDIATE_PARAMS_IGNORE_APP_TAG_MASK		0x1
 155#define DIF_ON_IMMEDIATE_PARAMS_IGNORE_APP_TAG_SHIFT		1
 156#define DIF_ON_IMMEDIATE_PARAMS_INITIAL_REF_TAG_IS_VALID_MASK	0x1
 157#define DIF_ON_IMMEDIATE_PARAMS_INITIAL_REF_TAG_IS_VALID_SHIFT	2
 158#define DIF_ON_IMMEDIATE_PARAMS_HOST_GUARD_TYPE_MASK		0x1
 159#define DIF_ON_IMMEDIATE_PARAMS_HOST_GUARD_TYPE_SHIFT		3
 160#define DIF_ON_IMMEDIATE_PARAMS_PROTECTION_TYPE_MASK		0x3
 161#define DIF_ON_IMMEDIATE_PARAMS_PROTECTION_TYPE_SHIFT		4
 162#define DIF_ON_IMMEDIATE_PARAMS_CRC_SEED_MASK			0x1
 163#define DIF_ON_IMMEDIATE_PARAMS_CRC_SEED_SHIFT			6
 164#define DIF_ON_IMMEDIATE_PARAMS_KEEP_REF_TAG_CONST_MASK		0x1
 165#define DIF_ON_IMMEDIATE_PARAMS_KEEP_REF_TAG_CONST_SHIFT	7
 166	u8 reserved_zero[5];
 167};
 168
 169/* iSCSI dif on immediate mode attributes union */
 170union dif_configuration_params {
 171	struct lun_mapper_addr_reserved lun_mapper_address;
 172	struct dif_on_immediate_params def_dif_conf;
 173};
 174
 175/* Union of data/r2t sequence number */
 176union iscsi_seq_num {
 177	__le16 data_sn;
 178	__le16 r2t_sn;
 179};
 180
 181/* iSCSI DIF flags */
 182struct iscsi_dif_flags {
 183	u8 flags;
 184#define ISCSI_DIF_FLAGS_PROT_INTERVAL_SIZE_LOG_MASK	0xF
 185#define ISCSI_DIF_FLAGS_PROT_INTERVAL_SIZE_LOG_SHIFT	0
 186#define ISCSI_DIF_FLAGS_DIF_TO_PEER_MASK		0x1
 187#define ISCSI_DIF_FLAGS_DIF_TO_PEER_SHIFT		4
 188#define ISCSI_DIF_FLAGS_HOST_INTERFACE_MASK		0x7
 189#define ISCSI_DIF_FLAGS_HOST_INTERFACE_SHIFT		5
 190};
 191
 192/* The iscsi storm task context of Ystorm */
 193struct ystorm_iscsi_task_state {
 194	struct scsi_cached_sges data_desc;
 195	struct scsi_sgl_params sgl_params;
 196	__le32 exp_r2t_sn;
 197	__le32 buffer_offset;
 198	union iscsi_seq_num seq_num;
 199	struct iscsi_dif_flags dif_flags;
 200	u8 flags;
 201#define YSTORM_ISCSI_TASK_STATE_LOCAL_COMP_MASK		0x1
 202#define YSTORM_ISCSI_TASK_STATE_LOCAL_COMP_SHIFT	0
 203#define YSTORM_ISCSI_TASK_STATE_SLOW_IO_MASK		0x1
 204#define YSTORM_ISCSI_TASK_STATE_SLOW_IO_SHIFT		1
 205#define YSTORM_ISCSI_TASK_STATE_SET_DIF_OFFSET_MASK	0x1
 206#define YSTORM_ISCSI_TASK_STATE_SET_DIF_OFFSET_SHIFT	2
 207#define YSTORM_ISCSI_TASK_STATE_RESERVED0_MASK		0x1F
 208#define YSTORM_ISCSI_TASK_STATE_RESERVED0_SHIFT		3
 209};
 210
 211/* The iscsi storm task context of Ystorm */
 212struct ystorm_iscsi_task_rxmit_opt {
 213	__le32 fast_rxmit_sge_offset;
 214	__le32 scan_start_buffer_offset;
 215	__le32 fast_rxmit_buffer_offset;
 216	u8 scan_start_sgl_index;
 217	u8 fast_rxmit_sgl_index;
 218	__le16 reserved;
 219};
 220
 221/* iSCSI Common PDU header */
 222struct iscsi_common_hdr {
 223	u8 hdr_status;
 224	u8 hdr_response;
 225	u8 hdr_flags;
 226	u8 hdr_first_byte;
 227#define ISCSI_COMMON_HDR_OPCODE_MASK		0x3F
 228#define ISCSI_COMMON_HDR_OPCODE_SHIFT		0
 229#define ISCSI_COMMON_HDR_IMM_MASK		0x1
 230#define ISCSI_COMMON_HDR_IMM_SHIFT		6
 231#define ISCSI_COMMON_HDR_RSRV_MASK		0x1
 232#define ISCSI_COMMON_HDR_RSRV_SHIFT		7
 233	__le32 hdr_second_dword;
 234#define ISCSI_COMMON_HDR_DATA_SEG_LEN_MASK	0xFFFFFF
 235#define ISCSI_COMMON_HDR_DATA_SEG_LEN_SHIFT	0
 236#define ISCSI_COMMON_HDR_TOTAL_AHS_LEN_MASK	0xFF
 237#define ISCSI_COMMON_HDR_TOTAL_AHS_LEN_SHIFT	24
 238	struct regpair lun_reserved;
 239	__le32 itt;
 240	__le32 ttt;
 241	__le32 cmdstat_sn;
 242	__le32 exp_statcmd_sn;
 243	__le32 max_cmd_sn;
 244	__le32 data[3];
 245};
 246
 247/* iSCSI Command PDU header */
 248struct iscsi_cmd_hdr {
 249	__le16 reserved1;
 250	u8 flags_attr;
 251#define ISCSI_CMD_HDR_ATTR_MASK			0x7
 252#define ISCSI_CMD_HDR_ATTR_SHIFT		0
 253#define ISCSI_CMD_HDR_RSRV_MASK			0x3
 254#define ISCSI_CMD_HDR_RSRV_SHIFT		3
 255#define ISCSI_CMD_HDR_WRITE_MASK		0x1
 256#define ISCSI_CMD_HDR_WRITE_SHIFT		5
 257#define ISCSI_CMD_HDR_READ_MASK			0x1
 258#define ISCSI_CMD_HDR_READ_SHIFT		6
 259#define ISCSI_CMD_HDR_FINAL_MASK		0x1
 260#define ISCSI_CMD_HDR_FINAL_SHIFT		7
 261	u8 hdr_first_byte;
 262#define ISCSI_CMD_HDR_OPCODE_MASK		0x3F
 263#define ISCSI_CMD_HDR_OPCODE_SHIFT		0
 264#define ISCSI_CMD_HDR_IMM_MASK			0x1
 265#define ISCSI_CMD_HDR_IMM_SHIFT			6
 266#define ISCSI_CMD_HDR_RSRV1_MASK		0x1
 267#define ISCSI_CMD_HDR_RSRV1_SHIFT		7
 268	__le32 hdr_second_dword;
 269#define ISCSI_CMD_HDR_DATA_SEG_LEN_MASK		0xFFFFFF
 270#define ISCSI_CMD_HDR_DATA_SEG_LEN_SHIFT	0
 271#define ISCSI_CMD_HDR_TOTAL_AHS_LEN_MASK	0xFF
 272#define ISCSI_CMD_HDR_TOTAL_AHS_LEN_SHIFT	24
 273	struct regpair lun;
 274	__le32 itt;
 275	__le32 expected_transfer_length;
 276	__le32 cmd_sn;
 277	__le32 exp_stat_sn;
 278	__le32 cdb[4];
 279};
 280
 281/* iSCSI Command PDU header with Extended CDB (Initiator Mode) */
 282struct iscsi_ext_cdb_cmd_hdr {
 283	__le16 reserved1;
 284	u8 flags_attr;
 285#define ISCSI_EXT_CDB_CMD_HDR_ATTR_MASK		0x7
 286#define ISCSI_EXT_CDB_CMD_HDR_ATTR_SHIFT	0
 287#define ISCSI_EXT_CDB_CMD_HDR_RSRV_MASK		0x3
 288#define ISCSI_EXT_CDB_CMD_HDR_RSRV_SHIFT	3
 289#define ISCSI_EXT_CDB_CMD_HDR_WRITE_MASK	0x1
 290#define ISCSI_EXT_CDB_CMD_HDR_WRITE_SHIFT	5
 291#define ISCSI_EXT_CDB_CMD_HDR_READ_MASK		0x1
 292#define ISCSI_EXT_CDB_CMD_HDR_READ_SHIFT	6
 293#define ISCSI_EXT_CDB_CMD_HDR_FINAL_MASK	0x1
 294#define ISCSI_EXT_CDB_CMD_HDR_FINAL_SHIFT	7
 295	u8 opcode;
 296	__le32 hdr_second_dword;
 297#define ISCSI_EXT_CDB_CMD_HDR_DATA_SEG_LEN_MASK		0xFFFFFF
 298#define ISCSI_EXT_CDB_CMD_HDR_DATA_SEG_LEN_SHIFT	0
 299#define ISCSI_EXT_CDB_CMD_HDR_CDB_SIZE_MASK		0xFF
 300#define ISCSI_EXT_CDB_CMD_HDR_CDB_SIZE_SHIFT		24
 301	struct regpair lun;
 302	__le32 itt;
 303	__le32 expected_transfer_length;
 304	__le32 cmd_sn;
 305	__le32 exp_stat_sn;
 306	struct scsi_sge cdb_sge;
 307};
 308
 309/* iSCSI login request PDU header */
 310struct iscsi_login_req_hdr {
 311	u8 version_min;
 312	u8 version_max;
 313	u8 flags_attr;
 314#define ISCSI_LOGIN_REQ_HDR_NSG_MASK	0x3
 315#define ISCSI_LOGIN_REQ_HDR_NSG_SHIFT	0
 316#define ISCSI_LOGIN_REQ_HDR_CSG_MASK	0x3
 317#define ISCSI_LOGIN_REQ_HDR_CSG_SHIFT	2
 318#define ISCSI_LOGIN_REQ_HDR_RSRV_MASK	0x3
 319#define ISCSI_LOGIN_REQ_HDR_RSRV_SHIFT	4
 320#define ISCSI_LOGIN_REQ_HDR_C_MASK	0x1
 321#define ISCSI_LOGIN_REQ_HDR_C_SHIFT	6
 322#define ISCSI_LOGIN_REQ_HDR_T_MASK	0x1
 323#define ISCSI_LOGIN_REQ_HDR_T_SHIFT	7
 324	u8 opcode;
 325	__le32 hdr_second_dword;
 326#define ISCSI_LOGIN_REQ_HDR_DATA_SEG_LEN_MASK	0xFFFFFF
 327#define ISCSI_LOGIN_REQ_HDR_DATA_SEG_LEN_SHIFT	0
 328#define ISCSI_LOGIN_REQ_HDR_TOTAL_AHS_LEN_MASK	0xFF
 329#define ISCSI_LOGIN_REQ_HDR_TOTAL_AHS_LEN_SHIFT	24
 330	__le32 isid_tabc;
 331	__le16 tsih;
 332	__le16 isid_d;
 333	__le32 itt;
 334	__le16 reserved1;
 335	__le16 cid;
 336	__le32 cmd_sn;
 337	__le32 exp_stat_sn;
 338	__le32 reserved2[4];
 339};
 340
 341/* iSCSI logout request PDU header */
 342struct iscsi_logout_req_hdr {
 343	__le16 reserved0;
 344	u8 reason_code;
 345	u8 opcode;
 346	__le32 reserved1;
 347	__le32 reserved2[2];
 348	__le32 itt;
 349	__le16 reserved3;
 350	__le16 cid;
 351	__le32 cmd_sn;
 352	__le32 exp_stat_sn;
 353	__le32 reserved4[4];
 354};
 355
 356/* iSCSI Data-out PDU header */
 357struct iscsi_data_out_hdr {
 358	__le16 reserved1;
 359	u8 flags_attr;
 360#define ISCSI_DATA_OUT_HDR_RSRV_MASK	0x7F
 361#define ISCSI_DATA_OUT_HDR_RSRV_SHIFT	0
 362#define ISCSI_DATA_OUT_HDR_FINAL_MASK	0x1
 363#define ISCSI_DATA_OUT_HDR_FINAL_SHIFT	7
 364	u8 opcode;
 365	__le32 reserved2;
 366	struct regpair lun;
 367	__le32 itt;
 368	__le32 ttt;
 369	__le32 reserved3;
 370	__le32 exp_stat_sn;
 371	__le32 reserved4;
 372	__le32 data_sn;
 373	__le32 buffer_offset;
 374	__le32 reserved5;
 375};
 376
 377/* iSCSI Data-in PDU header */
 378struct iscsi_data_in_hdr {
 379	u8 status_rsvd;
 380	u8 reserved1;
 381	u8 flags;
 382#define ISCSI_DATA_IN_HDR_STATUS_MASK		0x1
 383#define ISCSI_DATA_IN_HDR_STATUS_SHIFT		0
 384#define ISCSI_DATA_IN_HDR_UNDERFLOW_MASK	0x1
 385#define ISCSI_DATA_IN_HDR_UNDERFLOW_SHIFT	1
 386#define ISCSI_DATA_IN_HDR_OVERFLOW_MASK		0x1
 387#define ISCSI_DATA_IN_HDR_OVERFLOW_SHIFT	2
 388#define ISCSI_DATA_IN_HDR_RSRV_MASK		0x7
 389#define ISCSI_DATA_IN_HDR_RSRV_SHIFT		3
 390#define ISCSI_DATA_IN_HDR_ACK_MASK		0x1
 391#define ISCSI_DATA_IN_HDR_ACK_SHIFT		6
 392#define ISCSI_DATA_IN_HDR_FINAL_MASK		0x1
 393#define ISCSI_DATA_IN_HDR_FINAL_SHIFT		7
 394	u8 opcode;
 395	__le32 reserved2;
 396	struct regpair lun;
 397	__le32 itt;
 398	__le32 ttt;
 399	__le32 stat_sn;
 400	__le32 exp_cmd_sn;
 401	__le32 max_cmd_sn;
 402	__le32 data_sn;
 403	__le32 buffer_offset;
 404	__le32 residual_count;
 405};
 406
 407/* iSCSI R2T PDU header */
 408struct iscsi_r2t_hdr {
 409	u8 reserved0[3];
 410	u8 opcode;
 411	__le32 reserved2;
 412	struct regpair lun;
 413	__le32 itt;
 414	__le32 ttt;
 415	__le32 stat_sn;
 416	__le32 exp_cmd_sn;
 417	__le32 max_cmd_sn;
 418	__le32 r2t_sn;
 419	__le32 buffer_offset;
 420	__le32 desired_data_trns_len;
 421};
 422
 423/* iSCSI NOP-out PDU header */
 424struct iscsi_nop_out_hdr {
 425	__le16 reserved1;
 426	u8 flags_attr;
 427#define ISCSI_NOP_OUT_HDR_RSRV_MASK	0x7F
 428#define ISCSI_NOP_OUT_HDR_RSRV_SHIFT	0
 429#define ISCSI_NOP_OUT_HDR_CONST1_MASK	0x1
 430#define ISCSI_NOP_OUT_HDR_CONST1_SHIFT	7
 431	u8 opcode;
 432	__le32 reserved2;
 433	struct regpair lun;
 434	__le32 itt;
 435	__le32 ttt;
 436	__le32 cmd_sn;
 437	__le32 exp_stat_sn;
 438	__le32 reserved3;
 439	__le32 reserved4;
 440	__le32 reserved5;
 441	__le32 reserved6;
 442};
 443
 444/* iSCSI NOP-in PDU header */
 445struct iscsi_nop_in_hdr {
 446	__le16 reserved0;
 447	u8 flags_attr;
 448#define ISCSI_NOP_IN_HDR_RSRV_MASK	0x7F
 449#define ISCSI_NOP_IN_HDR_RSRV_SHIFT	0
 450#define ISCSI_NOP_IN_HDR_CONST1_MASK	0x1
 451#define ISCSI_NOP_IN_HDR_CONST1_SHIFT	7
 452	u8 opcode;
 453	__le32 hdr_second_dword;
 454#define ISCSI_NOP_IN_HDR_DATA_SEG_LEN_MASK	0xFFFFFF
 455#define ISCSI_NOP_IN_HDR_DATA_SEG_LEN_SHIFT	0
 456#define ISCSI_NOP_IN_HDR_TOTAL_AHS_LEN_MASK	0xFF
 457#define ISCSI_NOP_IN_HDR_TOTAL_AHS_LEN_SHIFT	24
 458	struct regpair lun;
 459	__le32 itt;
 460	__le32 ttt;
 461	__le32 stat_sn;
 462	__le32 exp_cmd_sn;
 463	__le32 max_cmd_sn;
 464	__le32 reserved5;
 465	__le32 reserved6;
 466	__le32 reserved7;
 467};
 468
 469/* iSCSI Login Response PDU header */
 470struct iscsi_login_response_hdr {
 471	u8 version_active;
 472	u8 version_max;
 473	u8 flags_attr;
 474#define ISCSI_LOGIN_RESPONSE_HDR_NSG_MASK	0x3
 475#define ISCSI_LOGIN_RESPONSE_HDR_NSG_SHIFT	0
 476#define ISCSI_LOGIN_RESPONSE_HDR_CSG_MASK	0x3
 477#define ISCSI_LOGIN_RESPONSE_HDR_CSG_SHIFT	2
 478#define ISCSI_LOGIN_RESPONSE_HDR_RSRV_MASK	0x3
 479#define ISCSI_LOGIN_RESPONSE_HDR_RSRV_SHIFT	4
 480#define ISCSI_LOGIN_RESPONSE_HDR_C_MASK		0x1
 481#define ISCSI_LOGIN_RESPONSE_HDR_C_SHIFT	6
 482#define ISCSI_LOGIN_RESPONSE_HDR_T_MASK		0x1
 483#define ISCSI_LOGIN_RESPONSE_HDR_T_SHIFT	7
 484	u8 opcode;
 485	__le32 hdr_second_dword;
 486#define ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK	0xFFFFFF
 487#define ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_SHIFT	0
 488#define ISCSI_LOGIN_RESPONSE_HDR_TOTAL_AHS_LEN_MASK	0xFF
 489#define ISCSI_LOGIN_RESPONSE_HDR_TOTAL_AHS_LEN_SHIFT	24
 490	__le32 isid_tabc;
 491	__le16 tsih;
 492	__le16 isid_d;
 493	__le32 itt;
 494	__le32 reserved1;
 495	__le32 stat_sn;
 496	__le32 exp_cmd_sn;
 497	__le32 max_cmd_sn;
 498	__le16 reserved2;
 499	u8 status_detail;
 500	u8 status_class;
 501	__le32 reserved4[2];
 502};
 503
 504/* iSCSI Logout Response PDU header */
 505struct iscsi_logout_response_hdr {
 506	u8 reserved1;
 507	u8 response;
 508	u8 flags;
 509	u8 opcode;
 510	__le32 hdr_second_dword;
 511#define ISCSI_LOGOUT_RESPONSE_HDR_DATA_SEG_LEN_MASK	0xFFFFFF
 512#define ISCSI_LOGOUT_RESPONSE_HDR_DATA_SEG_LEN_SHIFT	0
 513#define ISCSI_LOGOUT_RESPONSE_HDR_TOTAL_AHS_LEN_MASK	0xFF
 514#define ISCSI_LOGOUT_RESPONSE_HDR_TOTAL_AHS_LEN_SHIFT	24
 515	__le32 reserved2[2];
 516	__le32 itt;
 517	__le32 reserved3;
 518	__le32 stat_sn;
 519	__le32 exp_cmd_sn;
 520	__le32 max_cmd_sn;
 521	__le32 reserved4;
 522	__le16 time_2_retain;
 523	__le16 time_2_wait;
 524	__le32 reserved5[1];
 525};
 526
 527/* iSCSI Text Request PDU header */
 528struct iscsi_text_request_hdr {
 529	__le16 reserved0;
 530	u8 flags_attr;
 531#define ISCSI_TEXT_REQUEST_HDR_RSRV_MASK	0x3F
 532#define ISCSI_TEXT_REQUEST_HDR_RSRV_SHIFT	0
 533#define ISCSI_TEXT_REQUEST_HDR_C_MASK		0x1
 534#define ISCSI_TEXT_REQUEST_HDR_C_SHIFT		6
 535#define ISCSI_TEXT_REQUEST_HDR_F_MASK		0x1
 536#define ISCSI_TEXT_REQUEST_HDR_F_SHIFT		7
 537	u8 opcode;
 538	__le32 hdr_second_dword;
 539#define ISCSI_TEXT_REQUEST_HDR_DATA_SEG_LEN_MASK	0xFFFFFF
 540#define ISCSI_TEXT_REQUEST_HDR_DATA_SEG_LEN_SHIFT	0
 541#define ISCSI_TEXT_REQUEST_HDR_TOTAL_AHS_LEN_MASK	0xFF
 542#define ISCSI_TEXT_REQUEST_HDR_TOTAL_AHS_LEN_SHIFT	24
 543	struct regpair lun;
 544	__le32 itt;
 545	__le32 ttt;
 546	__le32 cmd_sn;
 547	__le32 exp_stat_sn;
 548	__le32 reserved4[4];
 549};
 550
 551/* iSCSI Text Response PDU header */
 552struct iscsi_text_response_hdr {
 553	__le16 reserved1;
 554	u8 flags;
 555#define ISCSI_TEXT_RESPONSE_HDR_RSRV_MASK	0x3F
 556#define ISCSI_TEXT_RESPONSE_HDR_RSRV_SHIFT	0
 557#define ISCSI_TEXT_RESPONSE_HDR_C_MASK		0x1
 558#define ISCSI_TEXT_RESPONSE_HDR_C_SHIFT		6
 559#define ISCSI_TEXT_RESPONSE_HDR_F_MASK		0x1
 560#define ISCSI_TEXT_RESPONSE_HDR_F_SHIFT		7
 561	u8 opcode;
 562	__le32 hdr_second_dword;
 563#define ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK	0xFFFFFF
 564#define ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_SHIFT	0
 565#define ISCSI_TEXT_RESPONSE_HDR_TOTAL_AHS_LEN_MASK	0xFF
 566#define ISCSI_TEXT_RESPONSE_HDR_TOTAL_AHS_LEN_SHIFT	24
 567	struct regpair lun;
 568	__le32 itt;
 569	__le32 ttt;
 570	__le32 stat_sn;
 571	__le32 exp_cmd_sn;
 572	__le32 max_cmd_sn;
 573	__le32 reserved4[3];
 574};
 575
 576/* iSCSI TMF Request PDU header */
 577struct iscsi_tmf_request_hdr {
 578	__le16 reserved0;
 579	u8 function;
 580	u8 opcode;
 581	__le32 hdr_second_dword;
 582#define ISCSI_TMF_REQUEST_HDR_DATA_SEG_LEN_MASK		0xFFFFFF
 583#define ISCSI_TMF_REQUEST_HDR_DATA_SEG_LEN_SHIFT	0
 584#define ISCSI_TMF_REQUEST_HDR_TOTAL_AHS_LEN_MASK	0xFF
 585#define ISCSI_TMF_REQUEST_HDR_TOTAL_AHS_LEN_SHIFT	24
 586	struct regpair lun;
 587	__le32 itt;
 588	__le32 rtt;
 589	__le32 cmd_sn;
 590	__le32 exp_stat_sn;
 591	__le32 ref_cmd_sn;
 592	__le32 exp_data_sn;
 593	__le32 reserved4[2];
 594};
 595
 596struct iscsi_tmf_response_hdr {
 597	u8 reserved2;
 598	u8 hdr_response;
 599	u8 hdr_flags;
 600	u8 opcode;
 601	__le32 hdr_second_dword;
 602#define ISCSI_TMF_RESPONSE_HDR_DATA_SEG_LEN_MASK	0xFFFFFF
 603#define ISCSI_TMF_RESPONSE_HDR_DATA_SEG_LEN_SHIFT	0
 604#define ISCSI_TMF_RESPONSE_HDR_TOTAL_AHS_LEN_MASK	0xFF
 605#define ISCSI_TMF_RESPONSE_HDR_TOTAL_AHS_LEN_SHIFT	24
 606	struct regpair reserved0;
 607	__le32 itt;
 608	__le32 reserved1;
 609	__le32 stat_sn;
 610	__le32 exp_cmd_sn;
 611	__le32 max_cmd_sn;
 612	__le32 reserved4[3];
 613};
 614
 615/* iSCSI Response PDU header */
 616struct iscsi_response_hdr {
 617	u8 hdr_status;
 618	u8 hdr_response;
 619	u8 hdr_flags;
 620	u8 opcode;
 621	__le32 hdr_second_dword;
 622#define ISCSI_RESPONSE_HDR_DATA_SEG_LEN_MASK	0xFFFFFF
 623#define ISCSI_RESPONSE_HDR_DATA_SEG_LEN_SHIFT	0
 624#define ISCSI_RESPONSE_HDR_TOTAL_AHS_LEN_MASK	0xFF
 625#define ISCSI_RESPONSE_HDR_TOTAL_AHS_LEN_SHIFT	24
 626	struct regpair lun;
 627	__le32 itt;
 628	__le32 snack_tag;
 629	__le32 stat_sn;
 630	__le32 exp_cmd_sn;
 631	__le32 max_cmd_sn;
 632	__le32 exp_data_sn;
 633	__le32 bi_residual_count;
 634	__le32 residual_count;
 635};
 636
 637/* iSCSI Reject PDU header */
 638struct iscsi_reject_hdr {
 639	u8 reserved4;
 640	u8 hdr_reason;
 641	u8 hdr_flags;
 642	u8 opcode;
 643	__le32 hdr_second_dword;
 644#define ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK	0xFFFFFF
 645#define ISCSI_REJECT_HDR_DATA_SEG_LEN_SHIFT	0
 646#define ISCSI_REJECT_HDR_TOTAL_AHS_LEN_MASK	0xFF
 647#define ISCSI_REJECT_HDR_TOTAL_AHS_LEN_SHIFT	24
 648	struct regpair reserved0;
 649	__le32 all_ones;
 650	__le32 reserved2;
 651	__le32 stat_sn;
 652	__le32 exp_cmd_sn;
 653	__le32 max_cmd_sn;
 654	__le32 data_sn;
 655	__le32 reserved3[2];
 656};
 657
 658/* iSCSI Asynchronous Message PDU header */
 659struct iscsi_async_msg_hdr {
 660	__le16 reserved0;
 661	u8 flags_attr;
 662#define ISCSI_ASYNC_MSG_HDR_RSRV_MASK		0x7F
 663#define ISCSI_ASYNC_MSG_HDR_RSRV_SHIFT		0
 664#define ISCSI_ASYNC_MSG_HDR_CONST1_MASK		0x1
 665#define ISCSI_ASYNC_MSG_HDR_CONST1_SHIFT	7
 666	u8 opcode;
 667	__le32 hdr_second_dword;
 668#define ISCSI_ASYNC_MSG_HDR_DATA_SEG_LEN_MASK	0xFFFFFF
 669#define ISCSI_ASYNC_MSG_HDR_DATA_SEG_LEN_SHIFT	0
 670#define ISCSI_ASYNC_MSG_HDR_TOTAL_AHS_LEN_MASK	0xFF
 671#define ISCSI_ASYNC_MSG_HDR_TOTAL_AHS_LEN_SHIFT	24
 672	struct regpair lun;
 673	__le32 all_ones;
 674	__le32 reserved1;
 675	__le32 stat_sn;
 676	__le32 exp_cmd_sn;
 677	__le32 max_cmd_sn;
 678	__le16 param1_rsrv;
 679	u8 async_vcode;
 680	u8 async_event;
 681	__le16 param3_rsrv;
 682	__le16 param2_rsrv;
 683	__le32 reserved7;
 684};
 685
 686/* PDU header part of Ystorm task context */
 687union iscsi_task_hdr {
 688	struct iscsi_common_hdr common;
 689	struct data_hdr data;
 690	struct iscsi_cmd_hdr cmd;
 691	struct iscsi_ext_cdb_cmd_hdr ext_cdb_cmd;
 692	struct iscsi_login_req_hdr login_req;
 693	struct iscsi_logout_req_hdr logout_req;
 694	struct iscsi_data_out_hdr data_out;
 695	struct iscsi_data_in_hdr data_in;
 696	struct iscsi_r2t_hdr r2t;
 697	struct iscsi_nop_out_hdr nop_out;
 698	struct iscsi_nop_in_hdr nop_in;
 699	struct iscsi_login_response_hdr login_response;
 700	struct iscsi_logout_response_hdr logout_response;
 701	struct iscsi_text_request_hdr text_request;
 702	struct iscsi_text_response_hdr text_response;
 703	struct iscsi_tmf_request_hdr tmf_request;
 704	struct iscsi_tmf_response_hdr tmf_response;
 705	struct iscsi_response_hdr response;
 706	struct iscsi_reject_hdr reject;
 707	struct iscsi_async_msg_hdr async_msg;
 708};
 709
 710/* The iscsi storm task context of Ystorm */
 711struct ystorm_iscsi_task_st_ctx {
 712	struct ystorm_iscsi_task_state state;
 713	struct ystorm_iscsi_task_rxmit_opt rxmit_opt;
 714	union iscsi_task_hdr pdu_hdr;
 715};
 716
 717struct ystorm_iscsi_task_ag_ctx {
 718	u8 reserved;
 719	u8 byte1;
 720	__le16 word0;
 721	u8 flags0;
 722#define YSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_MASK	0xF
 723#define YSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_SHIFT	0
 724#define YSTORM_ISCSI_TASK_AG_CTX_BIT0_MASK		0x1
 725#define YSTORM_ISCSI_TASK_AG_CTX_BIT0_SHIFT		4
 726#define YSTORM_ISCSI_TASK_AG_CTX_BIT1_MASK		0x1
 727#define YSTORM_ISCSI_TASK_AG_CTX_BIT1_SHIFT		5
 728#define YSTORM_ISCSI_TASK_AG_CTX_VALID_MASK		0x1
 729#define YSTORM_ISCSI_TASK_AG_CTX_VALID_SHIFT		6
 730#define YSTORM_ISCSI_TASK_AG_CTX_TTT_VALID_MASK   0x1	/* bit3 */
 731#define YSTORM_ISCSI_TASK_AG_CTX_TTT_VALID_SHIFT  7
 732	u8 flags1;
 733#define YSTORM_ISCSI_TASK_AG_CTX_CF0_MASK		0x3
 734#define YSTORM_ISCSI_TASK_AG_CTX_CF0_SHIFT		0
 735#define YSTORM_ISCSI_TASK_AG_CTX_CF1_MASK		0x3
 736#define YSTORM_ISCSI_TASK_AG_CTX_CF1_SHIFT		2
 737#define YSTORM_ISCSI_TASK_AG_CTX_CF2SPECIAL_MASK	0x3
 738#define YSTORM_ISCSI_TASK_AG_CTX_CF2SPECIAL_SHIFT	4
 739#define YSTORM_ISCSI_TASK_AG_CTX_CF0EN_MASK		0x1
 740#define YSTORM_ISCSI_TASK_AG_CTX_CF0EN_SHIFT		6
 741#define YSTORM_ISCSI_TASK_AG_CTX_CF1EN_MASK		0x1
 742#define YSTORM_ISCSI_TASK_AG_CTX_CF1EN_SHIFT		7
 743	u8 flags2;
 744#define YSTORM_ISCSI_TASK_AG_CTX_BIT4_MASK		0x1
 745#define YSTORM_ISCSI_TASK_AG_CTX_BIT4_SHIFT		0
 746#define YSTORM_ISCSI_TASK_AG_CTX_RULE0EN_MASK	0x1
 747#define YSTORM_ISCSI_TASK_AG_CTX_RULE0EN_SHIFT	1
 748#define YSTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK	0x1
 749#define YSTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT	2
 750#define YSTORM_ISCSI_TASK_AG_CTX_RULE2EN_MASK	0x1
 751#define YSTORM_ISCSI_TASK_AG_CTX_RULE2EN_SHIFT	3
 752#define YSTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK	0x1
 753#define YSTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT	4
 754#define YSTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK	0x1
 755#define YSTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT	5
 756#define YSTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK	0x1
 757#define YSTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT	6
 758#define YSTORM_ISCSI_TASK_AG_CTX_RULE6EN_MASK	0x1
 759#define YSTORM_ISCSI_TASK_AG_CTX_RULE6EN_SHIFT	7
 760	u8 byte2;
 761	__le32 TTT;
 762	u8 byte3;
 763	u8 byte4;
 764	__le16 word1;
 765};
 766
 767struct mstorm_iscsi_task_ag_ctx {
 768	u8 cdu_validation;
 769	u8 byte1;
 770	__le16 task_cid;
 771	u8 flags0;
 772#define MSTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_MASK	0xF
 773#define MSTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_SHIFT	0
 774#define MSTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_MASK		0x1
 775#define MSTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_SHIFT		4
 776#define MSTORM_ISCSI_TASK_AG_CTX_CONN_CLEAR_SQ_FLAG_MASK	0x1
 777#define MSTORM_ISCSI_TASK_AG_CTX_CONN_CLEAR_SQ_FLAG_SHIFT	5
 778#define MSTORM_ISCSI_TASK_AG_CTX_VALID_MASK			0x1
 779#define MSTORM_ISCSI_TASK_AG_CTX_VALID_SHIFT			6
 780#define MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_FLAG_MASK	0x1
 781#define MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_FLAG_SHIFT	7
 782	u8 flags1;
 783#define MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_MASK	0x3
 784#define MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_SHIFT	0
 785#define MSTORM_ISCSI_TASK_AG_CTX_CF1_MASK			0x3
 786#define MSTORM_ISCSI_TASK_AG_CTX_CF1_SHIFT			2
 787#define MSTORM_ISCSI_TASK_AG_CTX_CF2_MASK			0x3
 788#define MSTORM_ISCSI_TASK_AG_CTX_CF2_SHIFT			4
 789#define MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_EN_MASK	0x1
 790#define MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_EN_SHIFT	6
 791#define MSTORM_ISCSI_TASK_AG_CTX_CF1EN_MASK			0x1
 792#define MSTORM_ISCSI_TASK_AG_CTX_CF1EN_SHIFT			7
 793	u8 flags2;
 794#define MSTORM_ISCSI_TASK_AG_CTX_CF2EN_MASK		0x1
 795#define MSTORM_ISCSI_TASK_AG_CTX_CF2EN_SHIFT		0
 796#define MSTORM_ISCSI_TASK_AG_CTX_RULE0EN_MASK	0x1
 797#define MSTORM_ISCSI_TASK_AG_CTX_RULE0EN_SHIFT	1
 798#define MSTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK	0x1
 799#define MSTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT	2
 800#define MSTORM_ISCSI_TASK_AG_CTX_RULE2EN_MASK	0x1
 801#define MSTORM_ISCSI_TASK_AG_CTX_RULE2EN_SHIFT	3
 802#define MSTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK	0x1
 803#define MSTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT	4
 804#define MSTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK	0x1
 805#define MSTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT	5
 806#define MSTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK	0x1
 807#define MSTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT	6
 808#define MSTORM_ISCSI_TASK_AG_CTX_RULE6EN_MASK	0x1
 809#define MSTORM_ISCSI_TASK_AG_CTX_RULE6EN_SHIFT	7
 810	u8 byte2;
 811	__le32 reg0;
 812	u8 byte3;
 813	u8 byte4;
 814	__le16 word1;
 815};
 816
 817struct ustorm_iscsi_task_ag_ctx {
 818	u8 reserved;
 819	u8 state;
 820	__le16 icid;
 821	u8 flags0;
 822#define USTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_MASK	0xF
 823#define USTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_SHIFT	0
 824#define USTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_MASK		0x1
 825#define USTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_SHIFT		4
 826#define USTORM_ISCSI_TASK_AG_CTX_CONN_CLEAR_SQ_FLAG_MASK     0x1
 827#define USTORM_ISCSI_TASK_AG_CTX_CONN_CLEAR_SQ_FLAG_SHIFT    5
 828#define USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_MASK		0x3
 829#define USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_SHIFT		6
 830	u8 flags1;
 831#define USTORM_ISCSI_TASK_AG_CTX_RESERVED1_MASK	0x3
 832#define USTORM_ISCSI_TASK_AG_CTX_RESERVED1_SHIFT	0
 833#define USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_MASK	0x3
 834#define USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_SHIFT	2
 835#define USTORM_ISCSI_TASK_AG_CTX_CF3_MASK		0x3
 836#define USTORM_ISCSI_TASK_AG_CTX_CF3_SHIFT		4
 837#define USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_MASK	0x3
 838#define USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_SHIFT	6
 839	u8 flags2;
 840#define USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_EN_MASK	0x1
 841#define USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_EN_SHIFT	0
 842#define USTORM_ISCSI_TASK_AG_CTX_DISABLE_DATA_ACKED_MASK	0x1
 843#define USTORM_ISCSI_TASK_AG_CTX_DISABLE_DATA_ACKED_SHIFT	1
 844#define USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_EN_MASK		0x1
 845#define USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_EN_SHIFT		2
 846#define USTORM_ISCSI_TASK_AG_CTX_CF3EN_MASK			0x1
 847#define USTORM_ISCSI_TASK_AG_CTX_CF3EN_SHIFT			3
 848#define USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_EN_MASK	0x1
 849#define USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_EN_SHIFT	4
 850#define USTORM_ISCSI_TASK_AG_CTX_CMP_DATA_TOTAL_EXP_EN_MASK	0x1
 851#define USTORM_ISCSI_TASK_AG_CTX_CMP_DATA_TOTAL_EXP_EN_SHIFT	5
 852#define USTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK		0x1
 853#define USTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT		6
 854#define USTORM_ISCSI_TASK_AG_CTX_CMP_CONT_RCV_EXP_EN_MASK	0x1
 855#define USTORM_ISCSI_TASK_AG_CTX_CMP_CONT_RCV_EXP_EN_SHIFT	7
 856	u8 flags3;
 857#define USTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK		0x1
 858#define USTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT		0
 859#define USTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK		0x1
 860#define USTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT		1
 861#define USTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK		0x1
 862#define USTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT		2
 863#define USTORM_ISCSI_TASK_AG_CTX_RULE6EN_MASK		0x1
 864#define USTORM_ISCSI_TASK_AG_CTX_RULE6EN_SHIFT		3
 865#define USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_TYPE_MASK		0xF
 866#define USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_TYPE_SHIFT	4
 867	__le32 dif_err_intervals;
 868	__le32 dif_error_1st_interval;
 869	__le32 rcv_cont_len;
 870	__le32 exp_cont_len;
 871	__le32 total_data_acked;
 872	__le32 exp_data_acked;
 873	u8 byte2;
 874	u8 byte3;
 875	__le16 word1;
 876	__le16 next_tid;
 877	__le16 word3;
 878	__le32 hdr_residual_count;
 879	__le32 exp_r2t_sn;
 880};
 881
 882/* The iscsi storm task context of Mstorm */
 883struct mstorm_iscsi_task_st_ctx {
 884	struct scsi_cached_sges data_desc;
 885	struct scsi_sgl_params sgl_params;
 886	__le32 rem_task_size;
 887	__le32 data_buffer_offset;
 888	u8 task_type;
 889	struct iscsi_dif_flags dif_flags;
 890	__le16 dif_task_icid;
 891	struct regpair sense_db;
 892	__le32 expected_itt;
 893	__le32 reserved1;
 894};
 895
 896struct iscsi_reg1 {
 897	__le32 reg1_map;
 898#define ISCSI_REG1_NUM_SGES_MASK	0xF
 899#define ISCSI_REG1_NUM_SGES_SHIFT	0
 900#define ISCSI_REG1_RESERVED1_MASK	0xFFFFFFF
 901#define ISCSI_REG1_RESERVED1_SHIFT	4
 902};
 903
 904struct tqe_opaque {
 905	__le16 opaque[2];
 906};
 907
 908/* The iscsi storm task context of Ustorm */
 909struct ustorm_iscsi_task_st_ctx {
 910	__le32 rem_rcv_len;
 911	__le32 exp_data_transfer_len;
 912	__le32 exp_data_sn;
 913	struct regpair lun;
 914	struct iscsi_reg1 reg1;
 915	u8 flags2;
 916#define USTORM_ISCSI_TASK_ST_CTX_AHS_EXIST_MASK		0x1
 917#define USTORM_ISCSI_TASK_ST_CTX_AHS_EXIST_SHIFT	0
 918#define USTORM_ISCSI_TASK_ST_CTX_RESERVED1_MASK		0x7F
 919#define USTORM_ISCSI_TASK_ST_CTX_RESERVED1_SHIFT	1
 920	struct iscsi_dif_flags dif_flags;
 921	__le16 reserved3;
 922	struct tqe_opaque tqe_opaque_list;
 923	__le32 reserved5;
 924	__le32 reserved6;
 925	__le32 reserved7;
 926	u8 task_type;
 927	u8 error_flags;
 928#define USTORM_ISCSI_TASK_ST_CTX_DATA_DIGEST_ERROR_MASK		0x1
 929#define USTORM_ISCSI_TASK_ST_CTX_DATA_DIGEST_ERROR_SHIFT	0
 930#define USTORM_ISCSI_TASK_ST_CTX_DATA_TRUNCATED_ERROR_MASK	0x1
 931#define USTORM_ISCSI_TASK_ST_CTX_DATA_TRUNCATED_ERROR_SHIFT	1
 932#define USTORM_ISCSI_TASK_ST_CTX_UNDER_RUN_ERROR_MASK		0x1
 933#define USTORM_ISCSI_TASK_ST_CTX_UNDER_RUN_ERROR_SHIFT		2
 934#define USTORM_ISCSI_TASK_ST_CTX_RESERVED8_MASK			0x1F
 935#define USTORM_ISCSI_TASK_ST_CTX_RESERVED8_SHIFT		3
 936	u8 flags;
 937#define USTORM_ISCSI_TASK_ST_CTX_CQE_WRITE_MASK			0x3
 938#define USTORM_ISCSI_TASK_ST_CTX_CQE_WRITE_SHIFT		0
 939#define USTORM_ISCSI_TASK_ST_CTX_LOCAL_COMP_MASK		0x1
 940#define USTORM_ISCSI_TASK_ST_CTX_LOCAL_COMP_SHIFT		2
 941#define USTORM_ISCSI_TASK_ST_CTX_Q0_R2TQE_WRITE_MASK		0x1
 942#define USTORM_ISCSI_TASK_ST_CTX_Q0_R2TQE_WRITE_SHIFT		3
 943#define USTORM_ISCSI_TASK_ST_CTX_TOTAL_DATA_ACKED_DONE_MASK	0x1
 944#define USTORM_ISCSI_TASK_ST_CTX_TOTAL_DATA_ACKED_DONE_SHIFT	4
 945#define USTORM_ISCSI_TASK_ST_CTX_HQ_SCANNED_DONE_MASK		0x1
 946#define USTORM_ISCSI_TASK_ST_CTX_HQ_SCANNED_DONE_SHIFT		5
 947#define USTORM_ISCSI_TASK_ST_CTX_R2T2RECV_DONE_MASK		0x1
 948#define USTORM_ISCSI_TASK_ST_CTX_R2T2RECV_DONE_SHIFT		6
 949#define USTORM_ISCSI_TASK_ST_CTX_RESERVED0_MASK			0x1
 950#define USTORM_ISCSI_TASK_ST_CTX_RESERVED0_SHIFT		7
 951	u8 cq_rss_number;
 952};
 953
 954/* iscsi task context */
 955struct iscsi_task_context {
 956	struct ystorm_iscsi_task_st_ctx ystorm_st_context;
 957	struct ystorm_iscsi_task_ag_ctx ystorm_ag_context;
 958	struct regpair ystorm_ag_padding[2];
 959	struct tdif_task_context tdif_context;
 960	struct mstorm_iscsi_task_ag_ctx mstorm_ag_context;
 961	struct regpair mstorm_ag_padding[2];
 962	struct ustorm_iscsi_task_ag_ctx ustorm_ag_context;
 963	struct mstorm_iscsi_task_st_ctx mstorm_st_context;
 964	struct ustorm_iscsi_task_st_ctx ustorm_st_context;
 965	struct rdif_task_context rdif_context;
 966};
 967
 968/* iSCSI connection offload params passed by driver to FW in ISCSI offload
 969 * ramrod.
 970 */
 971struct iscsi_conn_offload_params {
 972	struct regpair sq_pbl_addr;
 973	struct regpair r2tq_pbl_addr;
 974	struct regpair xhq_pbl_addr;
 975	struct regpair uhq_pbl_addr;
 976	__le16 physical_q0;
 977	__le16 physical_q1;
 978	u8 flags;
 979#define ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B_MASK	0x1
 980#define ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B_SHIFT	0
 981#define ISCSI_CONN_OFFLOAD_PARAMS_TARGET_MODE_MASK	0x1
 982#define ISCSI_CONN_OFFLOAD_PARAMS_TARGET_MODE_SHIFT	1
 983#define ISCSI_CONN_OFFLOAD_PARAMS_RESTRICTED_MODE_MASK	0x1
 984#define ISCSI_CONN_OFFLOAD_PARAMS_RESTRICTED_MODE_SHIFT	2
 985#define ISCSI_CONN_OFFLOAD_PARAMS_RESERVED1_MASK	0x1F
 986#define ISCSI_CONN_OFFLOAD_PARAMS_RESERVED1_SHIFT	3
 987	u8 default_cq;
 988	__le16 reserved0;
 989	__le32 stat_sn;
 990	__le32 initial_ack;
 991};
 992
 993/* iSCSI connection statistics */
 994struct iscsi_conn_stats_params {
 995	struct regpair iscsi_tcp_tx_packets_cnt;
 996	struct regpair iscsi_tcp_tx_bytes_cnt;
 997	struct regpair iscsi_tcp_tx_rxmit_cnt;
 998	struct regpair iscsi_tcp_rx_packets_cnt;
 999	struct regpair iscsi_tcp_rx_bytes_cnt;
1000	struct regpair iscsi_tcp_rx_dup_ack_cnt;
1001	__le32 iscsi_tcp_rx_chksum_err_cnt;
1002	__le32 reserved;
1003};
1004
1005
1006/* iSCSI connection update params passed by driver to FW in ISCSI update
1007 *ramrod.
1008 */
1009struct iscsi_conn_update_ramrod_params {
1010	__le16 reserved0;
1011	__le16 conn_id;
1012	__le32 reserved1;
1013	u8 flags;
1014#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_HD_EN_MASK		0x1
1015#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_HD_EN_SHIFT		0
1016#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DD_EN_MASK		0x1
1017#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DD_EN_SHIFT		1
1018#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_INITIAL_R2T_MASK	0x1
1019#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_INITIAL_R2T_SHIFT	2
1020#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_IMMEDIATE_DATA_MASK	0x1
1021#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_IMMEDIATE_DATA_SHIFT	3
1022#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DIF_BLOCK_SIZE_MASK	0x1
1023#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DIF_BLOCK_SIZE_SHIFT	4
1024#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DIF_ON_HOST_EN_MASK	0x1
1025#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DIF_ON_HOST_EN_SHIFT	5
1026#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DIF_ON_IMM_EN_MASK	0x1
1027#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DIF_ON_IMM_EN_SHIFT	6
1028#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_LUN_MAPPER_EN_MASK	0x1
1029#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_LUN_MAPPER_EN_SHIFT	7
1030	u8 reserved3[3];
1031	__le32 max_seq_size;
1032	__le32 max_send_pdu_length;
1033	__le32 max_recv_pdu_length;
1034	__le32 first_seq_length;
1035	__le32 exp_stat_sn;
1036	union dif_configuration_params dif_on_imme_params;
1037};
1038
1039/* iSCSI CQ element */
1040struct iscsi_cqe_common {
1041	__le16 conn_id;
1042	u8 cqe_type;
1043	union cqe_error_status error_bitmap;
1044	__le32 reserved[3];
1045	union iscsi_task_hdr iscsi_hdr;
1046};
1047
1048/* iSCSI CQ element */
1049struct iscsi_cqe_solicited {
1050	__le16 conn_id;
1051	u8 cqe_type;
1052	union cqe_error_status error_bitmap;
1053	__le16 itid;
1054	u8 task_type;
1055	u8 fw_dbg_field;
1056	u8 caused_conn_err;
1057	u8 reserved0[3];
1058	__le32 data_truncated_bytes;
1059	union iscsi_task_hdr iscsi_hdr;
1060};
1061
1062/* iSCSI CQ element */
1063struct iscsi_cqe_unsolicited {
1064	__le16 conn_id;
1065	u8 cqe_type;
1066	union cqe_error_status error_bitmap;
1067	__le16 reserved0;
1068	u8 reserved1;
1069	u8 unsol_cqe_type;
1070	__le16 rqe_opaque;
1071	__le16 reserved2[3];
1072	union iscsi_task_hdr iscsi_hdr;
1073};
1074
1075/* iSCSI CQ element */
1076union iscsi_cqe {
1077	struct iscsi_cqe_common cqe_common;
1078	struct iscsi_cqe_solicited cqe_solicited;
1079	struct iscsi_cqe_unsolicited cqe_unsolicited;
1080};
1081
1082/* iSCSI CQE type */
1083enum iscsi_cqes_type {
1084	ISCSI_CQE_TYPE_SOLICITED = 1,
1085	ISCSI_CQE_TYPE_UNSOLICITED,
1086	ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE,
1087	ISCSI_CQE_TYPE_TASK_CLEANUP,
1088	ISCSI_CQE_TYPE_DUMMY,
1089	MAX_ISCSI_CQES_TYPE
1090};
1091
1092/* iSCSI CQE type */
1093enum iscsi_cqe_unsolicited_type {
1094	ISCSI_CQE_UNSOLICITED_NONE,
1095	ISCSI_CQE_UNSOLICITED_SINGLE,
1096	ISCSI_CQE_UNSOLICITED_FIRST,
1097	ISCSI_CQE_UNSOLICITED_MIDDLE,
1098	ISCSI_CQE_UNSOLICITED_LAST,
1099	MAX_ISCSI_CQE_UNSOLICITED_TYPE
1100};
1101
1102/* iscsi debug modes */
1103struct iscsi_debug_modes {
1104	u8 flags;
1105#define ISCSI_DEBUG_MODES_ASSERT_IF_RX_CONN_ERROR_MASK			0x1
1106#define ISCSI_DEBUG_MODES_ASSERT_IF_RX_CONN_ERROR_SHIFT			0
1107#define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_RESET_MASK			0x1
1108#define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_RESET_SHIFT			1
1109#define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_FIN_MASK			0x1
1110#define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_FIN_SHIFT			2
1111#define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_CLEANUP_MASK			0x1
1112#define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_CLEANUP_SHIFT			3
1113#define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_REJECT_OR_ASYNC_MASK		0x1
1114#define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_REJECT_OR_ASYNC_SHIFT		4
1115#define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_NOP_MASK			0x1
1116#define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_NOP_SHIFT			5
1117#define ISCSI_DEBUG_MODES_ASSERT_IF_DIF_OR_DATA_DIGEST_ERROR_MASK	0x1
1118#define ISCSI_DEBUG_MODES_ASSERT_IF_DIF_OR_DATA_DIGEST_ERROR_SHIFT	6
1119#define ISCSI_DEBUG_MODES_ASSERT_IF_HQ_CORRUPT_MASK			0x1
1120#define ISCSI_DEBUG_MODES_ASSERT_IF_HQ_CORRUPT_SHIFT			7
1121};
1122
1123/* iSCSI kernel completion queue IDs */
1124enum iscsi_eqe_opcode {
1125	ISCSI_EVENT_TYPE_INIT_FUNC = 0,
1126	ISCSI_EVENT_TYPE_DESTROY_FUNC,
1127	ISCSI_EVENT_TYPE_OFFLOAD_CONN,
1128	ISCSI_EVENT_TYPE_UPDATE_CONN,
1129	ISCSI_EVENT_TYPE_CLEAR_SQ,
1130	ISCSI_EVENT_TYPE_TERMINATE_CONN,
1131	ISCSI_EVENT_TYPE_MAC_UPDATE_CONN,
1132	ISCSI_EVENT_TYPE_COLLECT_STATS_CONN,
1133	ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE,
1134	ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE,
1135	ISCSI_EVENT_TYPE_START_OF_ERROR_TYPES = 10,
1136	ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD,
1137	ISCSI_EVENT_TYPE_ASYN_CLOSE_RCVD,
1138	ISCSI_EVENT_TYPE_ASYN_SYN_RCVD,
1139	ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME,
1140	ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT,
1141	ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT,
1142	ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2,
1143	ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR,
1144	ISCSI_EVENT_TYPE_TCP_CONN_ERROR,
1145	MAX_ISCSI_EQE_OPCODE
1146};
1147
1148/* iSCSI EQE and CQE completion status */
1149enum iscsi_error_types {
1150	ISCSI_STATUS_NONE = 0,
1151	ISCSI_CQE_ERROR_UNSOLICITED_RCV_ON_INVALID_CONN = 1,
1152	ISCSI_CONN_ERROR_TASK_CID_MISMATCH,
1153	ISCSI_CONN_ERROR_TASK_NOT_VALID,
1154	ISCSI_CONN_ERROR_RQ_RING_IS_FULL,
1155	ISCSI_CONN_ERROR_CMDQ_RING_IS_FULL,
1156	ISCSI_CONN_ERROR_HQE_CACHING_FAILED,
1157	ISCSI_CONN_ERROR_HEADER_DIGEST_ERROR,
1158	ISCSI_CONN_ERROR_LOCAL_COMPLETION_ERROR,
1159	ISCSI_CONN_ERROR_DATA_OVERRUN,
1160	ISCSI_CONN_ERROR_OUT_OF_SGES_ERROR,
1161	ISCSI_CONN_ERROR_IP_OPTIONS_ERROR,
1162	ISCSI_CONN_ERROR_PRS_ERRORS,
1163	ISCSI_CONN_ERROR_CONNECT_INVALID_TCP_OPTION,
1164	ISCSI_CONN_ERROR_TCP_IP_FRAGMENT_ERROR,
1165	ISCSI_CONN_ERROR_PROTOCOL_ERR_AHS_LEN,
1166	ISCSI_CONN_ERROR_PROTOCOL_ERR_AHS_TYPE,
1167	ISCSI_CONN_ERROR_PROTOCOL_ERR_ITT_OUT_OF_RANGE,
1168	ISCSI_CONN_ERROR_PROTOCOL_ERR_TTT_OUT_OF_RANGE,
1169	ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_EXCEEDS_PDU_SIZE,
1170	ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE,
1171	ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE_BEFORE_UPDATE,
1172	ISCSI_CONN_ERROR_UNVALID_NOPIN_DSL,
1173	ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_CARRIES_NO_DATA,
1174	ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SN,
1175	ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_IN_TTT,
1176	ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_OUT_ITT,
1177	ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_TTT,
1178	ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_BUFFER_OFFSET,
1179	ISCSI_CONN_ERROR_PROTOCOL_ERR_BUFFER_OFFSET_OOO,
1180	ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_SN,
1181	ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0,
1182	ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1,
1183	ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_2,
1184	ISCSI_CONN_ERROR_PROTOCOL_ERR_LUN,
1185	ISCSI_CONN_ERROR_PROTOCOL_ERR_F_BIT_ZERO,
1186	ISCSI_CONN_ERROR_PROTOCOL_ERR_F_BIT_ZERO_S_BIT_ONE,
1187	ISCSI_CONN_ERROR_PROTOCOL_ERR_EXP_STAT_SN,
1188	ISCSI_CONN_ERROR_PROTOCOL_ERR_DSL_NOT_ZERO,
1189	ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_DSL,
1190	ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_TOO_BIG,
1191	ISCSI_CONN_ERROR_PROTOCOL_ERR_OUTSTANDING_R2T_COUNT,
1192	ISCSI_CONN_ERROR_PROTOCOL_ERR_DIF_TX,
1193	ISCSI_CONN_ERROR_SENSE_DATA_LENGTH,
1194	ISCSI_CONN_ERROR_DATA_PLACEMENT_ERROR,
1195	ISCSI_CONN_ERROR_INVALID_ITT,
1196	ISCSI_ERROR_UNKNOWN,
1197	MAX_ISCSI_ERROR_TYPES
1198};
1199
1200/* iSCSI Ramrod Command IDs */
1201enum iscsi_ramrod_cmd_id {
1202	ISCSI_RAMROD_CMD_ID_UNUSED = 0,
1203	ISCSI_RAMROD_CMD_ID_INIT_FUNC = 1,
1204	ISCSI_RAMROD_CMD_ID_DESTROY_FUNC = 2,
1205	ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN = 3,
1206	ISCSI_RAMROD_CMD_ID_UPDATE_CONN = 4,
1207	ISCSI_RAMROD_CMD_ID_TERMINATION_CONN = 5,
1208	ISCSI_RAMROD_CMD_ID_CLEAR_SQ = 6,
1209	ISCSI_RAMROD_CMD_ID_MAC_UPDATE = 7,
1210	ISCSI_RAMROD_CMD_ID_CONN_STATS = 8,
1211	MAX_ISCSI_RAMROD_CMD_ID
1212};
1213
1214/* iSCSI connection termination request */
1215struct iscsi_spe_conn_mac_update {
1216	__le16 reserved0;
1217	__le16 conn_id;
1218	__le32 reserved1;
1219	__le16 remote_mac_addr_lo;
1220	__le16 remote_mac_addr_mid;
1221	__le16 remote_mac_addr_hi;
1222	u8 reserved2[2];
1223};
1224
1225/* iSCSI and TCP connection (Option 1) offload params passed by driver to FW in
1226 * iSCSI offload ramrod.
1227 */
1228struct iscsi_spe_conn_offload {
1229	__le16 reserved0;
1230	__le16 conn_id;
1231	__le32 reserved1;
1232	struct iscsi_conn_offload_params iscsi;
1233	struct tcp_offload_params tcp;
1234};
1235
1236/* iSCSI and TCP connection(Option 2) offload params passed by driver to FW in
1237 * iSCSI offload ramrod.
1238 */
1239struct iscsi_spe_conn_offload_option2 {
1240	__le16 reserved0;
1241	__le16 conn_id;
1242	__le32 reserved1;
1243	struct iscsi_conn_offload_params iscsi;
1244	struct tcp_offload_params_opt2 tcp;
1245};
1246
1247/* iSCSI collect connection statistics request */
1248struct iscsi_spe_conn_statistics {
1249	__le16 reserved0;
1250	__le16 conn_id;
1251	__le32 reserved1;
1252	u8 reset_stats;
1253	u8 reserved2[7];
1254	struct regpair stats_cnts_addr;
1255};
1256
1257/* iSCSI connection termination request */
1258struct iscsi_spe_conn_termination {
1259	__le16 reserved0;
1260	__le16 conn_id;
1261	__le32 reserved1;
1262	u8 abortive;
1263	u8 reserved2[7];
1264	struct regpair queue_cnts_addr;
1265	struct regpair query_params_addr;
1266};
1267
1268/* iSCSI firmware function init parameters */
1269struct iscsi_spe_func_init {
1270	__le16 half_way_close_timeout;
1271	u8 num_sq_pages_in_ring;
1272	u8 num_r2tq_pages_in_ring;
1273	u8 num_uhq_pages_in_ring;
1274	u8 ll2_rx_queue_id;
1275	u8 flags;
1276#define ISCSI_SPE_FUNC_INIT_COUNTERS_EN_MASK	0x1
1277#define ISCSI_SPE_FUNC_INIT_COUNTERS_EN_SHIFT	0
1278#define ISCSI_SPE_FUNC_INIT_RESERVED0_MASK	0x7F
1279#define ISCSI_SPE_FUNC_INIT_RESERVED0_SHIFT	1
1280	struct iscsi_debug_modes debug_mode;
1281	u8 params;
1282#define ISCSI_SPE_FUNC_INIT_MAX_SYN_RT_MASK	0xF
1283#define ISCSI_SPE_FUNC_INIT_MAX_SYN_RT_SHIFT	0
1284#define ISCSI_SPE_FUNC_INIT_RESERVED1_MASK	0xF
1285#define ISCSI_SPE_FUNC_INIT_RESERVED1_SHIFT	4
1286	u8 reserved2[7];
1287	struct scsi_init_func_params func_params;
1288	struct scsi_init_func_queues q_params;
1289};
1290
1291/* iSCSI task type */
1292enum iscsi_task_type {
1293	ISCSI_TASK_TYPE_INITIATOR_WRITE,
1294	ISCSI_TASK_TYPE_INITIATOR_READ,
1295	ISCSI_TASK_TYPE_MIDPATH,
1296	ISCSI_TASK_TYPE_UNSOLIC,
1297	ISCSI_TASK_TYPE_EXCHCLEANUP,
1298	ISCSI_TASK_TYPE_IRRELEVANT,
1299	ISCSI_TASK_TYPE_TARGET_WRITE,
1300	ISCSI_TASK_TYPE_TARGET_READ,
1301	ISCSI_TASK_TYPE_TARGET_RESPONSE,
1302	ISCSI_TASK_TYPE_LOGIN_RESPONSE,
1303	ISCSI_TASK_TYPE_TARGET_IMM_W_DIF,
1304	MAX_ISCSI_TASK_TYPE
1305};
1306
1307/* iSCSI DesiredDataTransferLength/ttt union */
1308union iscsi_ttt_txlen_union {
1309	__le32 desired_tx_len;
1310	__le32 ttt;
1311};
1312
1313/* iSCSI uHQ element */
1314struct iscsi_uhqe {
1315	__le32 reg1;
1316#define ISCSI_UHQE_PDU_PAYLOAD_LEN_MASK		0xFFFFF
1317#define ISCSI_UHQE_PDU_PAYLOAD_LEN_SHIFT	0
1318#define ISCSI_UHQE_LOCAL_COMP_MASK		0x1
1319#define ISCSI_UHQE_LOCAL_COMP_SHIFT		20
1320#define ISCSI_UHQE_TOGGLE_BIT_MASK		0x1
1321#define ISCSI_UHQE_TOGGLE_BIT_SHIFT		21
1322#define ISCSI_UHQE_PURE_PAYLOAD_MASK		0x1
1323#define ISCSI_UHQE_PURE_PAYLOAD_SHIFT		22
1324#define ISCSI_UHQE_LOGIN_RESPONSE_PDU_MASK	0x1
1325#define ISCSI_UHQE_LOGIN_RESPONSE_PDU_SHIFT	23
1326#define ISCSI_UHQE_TASK_ID_HI_MASK		0xFF
1327#define ISCSI_UHQE_TASK_ID_HI_SHIFT		24
1328	__le32 reg2;
1329#define ISCSI_UHQE_BUFFER_OFFSET_MASK	0xFFFFFF
1330#define ISCSI_UHQE_BUFFER_OFFSET_SHIFT	0
1331#define ISCSI_UHQE_TASK_ID_LO_MASK	0xFF
1332#define ISCSI_UHQE_TASK_ID_LO_SHIFT	24
1333};
1334
1335/* iSCSI WQ element */
1336struct iscsi_wqe {
1337	__le16 task_id;
1338	u8 flags;
1339#define ISCSI_WQE_WQE_TYPE_MASK		0x7
1340#define ISCSI_WQE_WQE_TYPE_SHIFT	0
1341#define ISCSI_WQE_NUM_SGES_MASK		0xF
1342#define ISCSI_WQE_NUM_SGES_SHIFT	3
1343#define ISCSI_WQE_RESPONSE_MASK		0x1
1344#define ISCSI_WQE_RESPONSE_SHIFT	7
1345	struct iscsi_dif_flags prot_flags;
1346	__le32 contlen_cdbsize;
1347#define ISCSI_WQE_CONT_LEN_MASK		0xFFFFFF
1348#define ISCSI_WQE_CONT_LEN_SHIFT	0
1349#define ISCSI_WQE_CDB_SIZE_MASK		0xFF
1350#define ISCSI_WQE_CDB_SIZE_SHIFT	24
1351};
1352
1353/* iSCSI wqe type */
1354enum iscsi_wqe_type {
1355	ISCSI_WQE_TYPE_NORMAL,
1356	ISCSI_WQE_TYPE_TASK_CLEANUP,
1357	ISCSI_WQE_TYPE_MIDDLE_PATH,
1358	ISCSI_WQE_TYPE_LOGIN,
1359	ISCSI_WQE_TYPE_FIRST_R2T_CONT,
1360	ISCSI_WQE_TYPE_NONFIRST_R2T_CONT,
1361	ISCSI_WQE_TYPE_RESPONSE,
1362	MAX_ISCSI_WQE_TYPE
1363};
1364
1365/* iSCSI xHQ element */
1366struct iscsi_xhqe {
1367	union iscsi_ttt_txlen_union ttt_or_txlen;
1368	__le32 exp_stat_sn;
1369	struct iscsi_dif_flags prot_flags;
1370	u8 total_ahs_length;
1371	u8 opcode;
1372	u8 flags;
1373#define ISCSI_XHQE_FINAL_MASK		0x1
1374#define ISCSI_XHQE_FINAL_SHIFT		0
1375#define ISCSI_XHQE_STATUS_BIT_MASK	0x1
1376#define ISCSI_XHQE_STATUS_BIT_SHIFT	1
1377#define ISCSI_XHQE_NUM_SGES_MASK	0xF
1378#define ISCSI_XHQE_NUM_SGES_SHIFT	2
1379#define ISCSI_XHQE_RESERVED0_MASK	0x3
1380#define ISCSI_XHQE_RESERVED0_SHIFT	6
1381	union iscsi_seq_num seq_num;
1382	__le16 reserved1;
1383};
1384
1385/* Per PF iSCSI receive path statistics - mStorm RAM structure */
1386struct mstorm_iscsi_stats_drv {
1387	struct regpair iscsi_rx_dropped_pdus_task_not_valid;
1388	struct regpair iscsi_rx_dup_ack_cnt;
1389};
1390
1391/* Per PF iSCSI transmit path statistics - pStorm RAM structure */
1392struct pstorm_iscsi_stats_drv {
1393	struct regpair iscsi_tx_bytes_cnt;
1394	struct regpair iscsi_tx_packet_cnt;
1395};
1396
1397/* Per PF iSCSI receive path statistics - tStorm RAM structure */
1398struct tstorm_iscsi_stats_drv {
1399	struct regpair iscsi_rx_bytes_cnt;
1400	struct regpair iscsi_rx_packet_cnt;
1401	struct regpair iscsi_rx_new_ooo_isle_events_cnt;
1402	struct regpair iscsi_rx_tcp_payload_bytes_cnt;
1403	struct regpair iscsi_rx_tcp_pkt_cnt;
1404	struct regpair iscsi_rx_pure_ack_cnt;
1405	__le32 iscsi_cmdq_threshold_cnt;
1406	__le32 iscsi_rq_threshold_cnt;
1407	__le32 iscsi_immq_threshold_cnt;
1408};
1409
1410/* Per PF iSCSI receive path statistics - uStorm RAM structure */
1411struct ustorm_iscsi_stats_drv {
1412	struct regpair iscsi_rx_data_pdu_cnt;
1413	struct regpair iscsi_rx_r2t_pdu_cnt;
1414	struct regpair iscsi_rx_total_pdu_cnt;
1415};
1416
1417/* Per PF iSCSI transmit path statistics - xStorm RAM structure */
1418struct xstorm_iscsi_stats_drv {
1419	struct regpair iscsi_tx_go_to_slow_start_event_cnt;
1420	struct regpair iscsi_tx_fast_retransmit_event_cnt;
1421	struct regpair iscsi_tx_pure_ack_cnt;
1422	struct regpair iscsi_tx_delayed_ack_cnt;
1423};
1424
1425/* Per PF iSCSI transmit path statistics - yStorm RAM structure */
1426struct ystorm_iscsi_stats_drv {
1427	struct regpair iscsi_tx_data_pdu_cnt;
1428	struct regpair iscsi_tx_r2t_pdu_cnt;
1429	struct regpair iscsi_tx_total_pdu_cnt;
1430	struct regpair iscsi_tx_tcp_payload_bytes_cnt;
1431	struct regpair iscsi_tx_tcp_pkt_cnt;
1432};
1433
1434struct tstorm_iscsi_task_ag_ctx {
1435	u8 byte0;
1436	u8 byte1;
1437	__le16 word0;
1438	u8 flags0;
1439#define TSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_MASK	0xF
1440#define TSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_SHIFT	0
1441#define TSTORM_ISCSI_TASK_AG_CTX_BIT0_MASK		0x1
1442#define TSTORM_ISCSI_TASK_AG_CTX_BIT0_SHIFT		4
1443#define TSTORM_ISCSI_TASK_AG_CTX_BIT1_MASK		0x1
1444#define TSTORM_ISCSI_TASK_AG_CTX_BIT1_SHIFT		5
1445#define TSTORM_ISCSI_TASK_AG_CTX_BIT2_MASK		0x1
1446#define TSTORM_ISCSI_TASK_AG_CTX_BIT2_SHIFT		6
1447#define TSTORM_ISCSI_TASK_AG_CTX_BIT3_MASK		0x1
1448#define TSTORM_ISCSI_TASK_AG_CTX_BIT3_SHIFT		7
1449	u8 flags1;
1450#define TSTORM_ISCSI_TASK_AG_CTX_BIT4_MASK	0x1
1451#define TSTORM_ISCSI_TASK_AG_CTX_BIT4_SHIFT	0
1452#define TSTORM_ISCSI_TASK_AG_CTX_BIT5_MASK	0x1
1453#define TSTORM_ISCSI_TASK_AG_CTX_BIT5_SHIFT	1
1454#define TSTORM_ISCSI_TASK_AG_CTX_CF0_MASK	0x3
1455#define TSTORM_ISCSI_TASK_AG_CTX_CF0_SHIFT	2
1456#define TSTORM_ISCSI_TASK_AG_CTX_CF1_MASK	0x3
1457#define TSTORM_ISCSI_TASK_AG_CTX_CF1_SHIFT	4
1458#define TSTORM_ISCSI_TASK_AG_CTX_CF2_MASK	0x3
1459#define TSTORM_ISCSI_TASK_AG_CTX_CF2_SHIFT	6
1460	u8 flags2;
1461#define TSTORM_ISCSI_TASK_AG_CTX_CF3_MASK	0x3
1462#define TSTORM_ISCSI_TASK_AG_CTX_CF3_SHIFT	0
1463#define TSTORM_ISCSI_TASK_AG_CTX_CF4_MASK	0x3
1464#define TSTORM_ISCSI_TASK_AG_CTX_CF4_SHIFT	2
1465#define TSTORM_ISCSI_TASK_AG_CTX_CF5_MASK	0x3
1466#define TSTORM_ISCSI_TASK_AG_CTX_CF5_SHIFT	4
1467#define TSTORM_ISCSI_TASK_AG_CTX_CF6_MASK	0x3
1468#define TSTORM_ISCSI_TASK_AG_CTX_CF6_SHIFT	6
1469	u8 flags3;
1470#define TSTORM_ISCSI_TASK_AG_CTX_CF7_MASK	0x3
1471#define TSTORM_ISCSI_TASK_AG_CTX_CF7_SHIFT	0
1472#define TSTORM_ISCSI_TASK_AG_CTX_CF0EN_MASK	0x1
1473#define TSTORM_ISCSI_TASK_AG_CTX_CF0EN_SHIFT	2
1474#define TSTORM_ISCSI_TASK_AG_CTX_CF1EN_MASK	0x1
1475#define TSTORM_ISCSI_TASK_AG_CTX_CF1EN_SHIFT	3
1476#define TSTORM_ISCSI_TASK_AG_CTX_CF2EN_MASK	0x1
1477#define TSTORM_ISCSI_TASK_AG_CTX_CF2EN_SHIFT	4
1478#define TSTORM_ISCSI_TASK_AG_CTX_CF3EN_MASK	0x1
1479#define TSTORM_ISCSI_TASK_AG_CTX_CF3EN_SHIFT	5
1480#define TSTORM_ISCSI_TASK_AG_CTX_CF4EN_MASK	0x1
1481#define TSTORM_ISCSI_TASK_AG_CTX_CF4EN_SHIFT	6
1482#define TSTORM_ISCSI_TASK_AG_CTX_CF5EN_MASK	0x1
1483#define TSTORM_ISCSI_TASK_AG_CTX_CF5EN_SHIFT	7
1484	u8 flags4;
1485#define TSTORM_ISCSI_TASK_AG_CTX_CF6EN_MASK		0x1
1486#define TSTORM_ISCSI_TASK_AG_CTX_CF6EN_SHIFT		0
1487#define TSTORM_ISCSI_TASK_AG_CTX_CF7EN_MASK		0x1
1488#define TSTORM_ISCSI_TASK_AG_CTX_CF7EN_SHIFT		1
1489#define TSTORM_ISCSI_TASK_AG_CTX_RULE0EN_MASK	0x1
1490#define TSTORM_ISCSI_TASK_AG_CTX_RULE0EN_SHIFT	2
1491#define TSTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK	0x1
1492#define TSTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT	3
1493#define TSTORM_ISCSI_TASK_AG_CTX_RULE2EN_MASK	0x1
1494#define TSTORM_ISCSI_TASK_AG_CTX_RULE2EN_SHIFT	4
1495#define TSTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK	0x1
1496#define TSTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT	5
1497#define TSTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK	0x1
1498#define TSTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT	6
1499#define TSTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK	0x1
1500#define TSTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT	7
1501	u8 byte2;
1502	__le16 word1;
1503	__le32 reg0;
1504	u8 byte3;
1505	u8 byte4;
1506	__le16 word2;
1507	__le16 word3;
1508	__le16 word4;
1509	__le32 reg1;
1510	__le32 reg2;
1511};
1512
1513/* iSCSI doorbell data */
1514struct iscsi_db_data {
1515	u8 params;
1516#define ISCSI_DB_DATA_DEST_MASK		0x3
1517#define ISCSI_DB_DATA_DEST_SHIFT	0
1518#define ISCSI_DB_DATA_AGG_CMD_MASK	0x3
1519#define ISCSI_DB_DATA_AGG_CMD_SHIFT	2
1520#define ISCSI_DB_DATA_BYPASS_EN_MASK	0x1
1521#define ISCSI_DB_DATA_BYPASS_EN_SHIFT	4
1522#define ISCSI_DB_DATA_RESERVED_MASK	0x1
1523#define ISCSI_DB_DATA_RESERVED_SHIFT	5
1524#define ISCSI_DB_DATA_AGG_VAL_SEL_MASK	0x3
1525#define ISCSI_DB_DATA_AGG_VAL_SEL_SHIFT	6
1526	u8 agg_flags;
1527	__le16 sq_prod;
1528};
1529
1530#endif /* __ISCSI_COMMON__ */