1 /* QLogic iSCSI Offload Driver 2 * Copyright (c) 2016 Cavium Inc. 3 * 4 * This software is available under the terms of the GNU General Public License 5 * (GPL) Version 2, available from the file COPYING in the main directory of 6 * this source tree. 7 */ 8 9 #include <linux/types.h> 10 #include <asm/byteorder.h> 11 #include "qedi_hsi.h" 12 #include <linux/qed/qed_if.h> 13 14 #include "qedi_fw_iscsi.h" 15 #include "qedi_fw_scsi.h" 16 17 #define SCSI_NUM_SGES_IN_CACHE 0x4 18 19 static bool scsi_is_slow_sgl(u16 num_sges, bool small_mid_sge) 20 { 21 return (num_sges > SCSI_NUM_SGES_SLOW_SGL_THR && small_mid_sge); 22 } 23 24 static 25 void init_scsi_sgl_context(struct scsi_sgl_params *ctx_sgl_params, 26 struct scsi_cached_sges *ctx_data_desc, 27 struct scsi_sgl_task_params *sgl_task_params) 28 { 29 u8 sge_index; 30 u8 num_sges; 31 u32 val; 32 33 num_sges = (sgl_task_params->num_sges > SCSI_NUM_SGES_IN_CACHE) ? 34 SCSI_NUM_SGES_IN_CACHE : sgl_task_params->num_sges; 35 36 /* sgl params */ 37 val = cpu_to_le32(sgl_task_params->sgl_phys_addr.lo); 38 ctx_sgl_params->sgl_addr.lo = val; 39 val = cpu_to_le32(sgl_task_params->sgl_phys_addr.hi); 40 ctx_sgl_params->sgl_addr.hi = val; 41 val = cpu_to_le32(sgl_task_params->total_buffer_size); 42 ctx_sgl_params->sgl_total_length = val; 43 ctx_sgl_params->sgl_num_sges = cpu_to_le16(sgl_task_params->num_sges); 44 45 for (sge_index = 0; sge_index < num_sges; sge_index++) { 46 val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_addr.lo); 47 ctx_data_desc->sge[sge_index].sge_addr.lo = val; 48 val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_addr.hi); 49 ctx_data_desc->sge[sge_index].sge_addr.hi = val; 50 val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_len); 51 ctx_data_desc->sge[sge_index].sge_len = val; 52 } 53 } 54 55 static u32 calc_rw_task_size(struct iscsi_task_params *task_params, 56 enum iscsi_task_type task_type, 57 struct scsi_sgl_task_params *sgl_task_params, 58 struct scsi_dif_task_params *dif_task_params) 59 { 60 u32 io_size; 61 62 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE || 63 task_type == ISCSI_TASK_TYPE_TARGET_READ) 64 io_size = task_params->tx_io_size; 65 else 66 io_size = task_params->rx_io_size; 67 68 if (!io_size) 69 return 0; 70 71 if (!dif_task_params) 72 return io_size; 73 74 return !dif_task_params->dif_on_network ? 75 io_size : sgl_task_params->total_buffer_size; 76 } 77 78 static void 79 init_dif_context_flags(struct iscsi_dif_flags *ctx_dif_flags, 80 struct scsi_dif_task_params *dif_task_params) 81 { 82 if (!dif_task_params) 83 return; 84 85 SET_FIELD(ctx_dif_flags->flags, ISCSI_DIF_FLAGS_PROT_INTERVAL_SIZE_LOG, 86 dif_task_params->dif_block_size_log); 87 SET_FIELD(ctx_dif_flags->flags, ISCSI_DIF_FLAGS_DIF_TO_PEER, 88 dif_task_params->dif_on_network ? 1 : 0); 89 SET_FIELD(ctx_dif_flags->flags, ISCSI_DIF_FLAGS_HOST_INTERFACE, 90 dif_task_params->dif_on_host ? 1 : 0); 91 } 92 93 static void init_sqe(struct iscsi_task_params *task_params, 94 struct scsi_sgl_task_params *sgl_task_params, 95 struct scsi_dif_task_params *dif_task_params, 96 struct iscsi_common_hdr *pdu_header, 97 struct scsi_initiator_cmd_params *cmd_params, 98 enum iscsi_task_type task_type, 99 bool is_cleanup) 100 { 101 if (!task_params->sqe) 102 return; 103 104 memset(task_params->sqe, 0, sizeof(*task_params->sqe)); 105 task_params->sqe->task_id = cpu_to_le16(task_params->itid); 106 if (is_cleanup) { 107 SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE, 108 ISCSI_WQE_TYPE_TASK_CLEANUP); 109 return; 110 } 111 112 switch (task_type) { 113 case ISCSI_TASK_TYPE_INITIATOR_WRITE: 114 { 115 u32 buf_size = 0; 116 u32 num_sges = 0; 117 118 init_dif_context_flags(&task_params->sqe->prot_flags, 119 dif_task_params); 120 121 SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE, 122 ISCSI_WQE_TYPE_NORMAL); 123 124 if (task_params->tx_io_size) { 125 buf_size = calc_rw_task_size(task_params, task_type, 126 sgl_task_params, 127 dif_task_params); 128 129 if (scsi_is_slow_sgl(sgl_task_params->num_sges, 130 sgl_task_params->small_mid_sge)) 131 num_sges = ISCSI_WQE_NUM_SGES_SLOWIO; 132 else 133 num_sges = min(sgl_task_params->num_sges, 134 (u16)SCSI_NUM_SGES_SLOW_SGL_THR); 135 } 136 137 SET_FIELD(task_params->sqe->flags, ISCSI_WQE_NUM_SGES, num_sges); 138 SET_FIELD(task_params->sqe->contlen_cdbsize, ISCSI_WQE_CONT_LEN, 139 buf_size); 140 141 if (GET_FIELD(pdu_header->hdr_second_dword, 142 ISCSI_CMD_HDR_TOTAL_AHS_LEN)) 143 SET_FIELD(task_params->sqe->contlen_cdbsize, ISCSI_WQE_CDB_SIZE, 144 cmd_params->extended_cdb_sge.sge_len); 145 } 146 break; 147 case ISCSI_TASK_TYPE_INITIATOR_READ: 148 SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE, 149 ISCSI_WQE_TYPE_NORMAL); 150 151 if (GET_FIELD(pdu_header->hdr_second_dword, 152 ISCSI_CMD_HDR_TOTAL_AHS_LEN)) 153 SET_FIELD(task_params->sqe->contlen_cdbsize, 154 ISCSI_WQE_CDB_SIZE, 155 cmd_params->extended_cdb_sge.sge_len); 156 break; 157 case ISCSI_TASK_TYPE_LOGIN_RESPONSE: 158 case ISCSI_TASK_TYPE_MIDPATH: 159 { 160 bool advance_statsn = true; 161 162 if (task_type == ISCSI_TASK_TYPE_LOGIN_RESPONSE) 163 SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE, 164 ISCSI_WQE_TYPE_LOGIN); 165 else 166 SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE, 167 ISCSI_WQE_TYPE_MIDDLE_PATH); 168 169 if (task_type == ISCSI_TASK_TYPE_MIDPATH) { 170 u8 opcode = GET_FIELD(pdu_header->hdr_first_byte, 171 ISCSI_COMMON_HDR_OPCODE); 172 173 if (opcode != ISCSI_OPCODE_TEXT_RESPONSE && 174 (opcode != ISCSI_OPCODE_NOP_IN || 175 pdu_header->itt == ISCSI_TTT_ALL_ONES)) 176 advance_statsn = false; 177 } 178 179 SET_FIELD(task_params->sqe->flags, ISCSI_WQE_RESPONSE, 180 advance_statsn ? 1 : 0); 181 182 if (task_params->tx_io_size) { 183 SET_FIELD(task_params->sqe->contlen_cdbsize, 184 ISCSI_WQE_CONT_LEN, task_params->tx_io_size); 185 186 if (scsi_is_slow_sgl(sgl_task_params->num_sges, 187 sgl_task_params->small_mid_sge)) 188 SET_FIELD(task_params->sqe->flags, ISCSI_WQE_NUM_SGES, 189 ISCSI_WQE_NUM_SGES_SLOWIO); 190 else 191 SET_FIELD(task_params->sqe->flags, ISCSI_WQE_NUM_SGES, 192 min(sgl_task_params->num_sges, 193 (u16)SCSI_NUM_SGES_SLOW_SGL_THR)); 194 } 195 } 196 break; 197 default: 198 break; 199 } 200 } 201 202 static void init_default_iscsi_task(struct iscsi_task_params *task_params, 203 struct data_hdr *pdu_header, 204 enum iscsi_task_type task_type) 205 { 206 struct iscsi_task_context *context; 207 u16 index; 208 u32 val; 209 210 context = task_params->context; 211 memset(context, 0, sizeof(*context)); 212 213 for (index = 0; index < 214 ARRAY_SIZE(context->ystorm_st_context.pdu_hdr.data.data); 215 index++) { 216 val = cpu_to_le32(pdu_header->data[index]); 217 context->ystorm_st_context.pdu_hdr.data.data[index] = val; 218 } 219 220 context->mstorm_st_context.task_type = task_type; 221 context->mstorm_ag_context.task_cid = 222 cpu_to_le16(task_params->conn_icid); 223 224 SET_FIELD(context->ustorm_ag_context.flags1, 225 USTORM_ISCSI_TASK_AG_CTX_R2T2RECV, 1); 226 227 context->ustorm_st_context.task_type = task_type; 228 context->ustorm_st_context.cq_rss_number = task_params->cq_rss_number; 229 context->ustorm_ag_context.icid = cpu_to_le16(task_params->conn_icid); 230 } 231 232 static 233 void init_initiator_rw_cdb_ystorm_context(struct ystorm_iscsi_task_st_ctx *ystc, 234 struct scsi_initiator_cmd_params *cmd) 235 { 236 union iscsi_task_hdr *ctx_pdu_hdr = &ystc->pdu_hdr; 237 u32 val; 238 239 if (!cmd->extended_cdb_sge.sge_len) 240 return; 241 242 SET_FIELD(ctx_pdu_hdr->ext_cdb_cmd.hdr_second_dword, 243 ISCSI_EXT_CDB_CMD_HDR_CDB_SIZE, 244 cmd->extended_cdb_sge.sge_len); 245 val = cpu_to_le32(cmd->extended_cdb_sge.sge_addr.lo); 246 ctx_pdu_hdr->ext_cdb_cmd.cdb_sge.sge_addr.lo = val; 247 val = cpu_to_le32(cmd->extended_cdb_sge.sge_addr.hi); 248 ctx_pdu_hdr->ext_cdb_cmd.cdb_sge.sge_addr.hi = val; 249 val = cpu_to_le32(cmd->extended_cdb_sge.sge_len); 250 ctx_pdu_hdr->ext_cdb_cmd.cdb_sge.sge_len = val; 251 } 252 253 static 254 void init_ustorm_task_contexts(struct ustorm_iscsi_task_st_ctx *ustorm_st_cxt, 255 struct ustorm_iscsi_task_ag_ctx *ustorm_ag_cxt, 256 u32 remaining_recv_len, 257 u32 expected_data_transfer_len, 258 u8 num_sges, bool tx_dif_conn_err_en) 259 { 260 u32 val; 261 262 ustorm_st_cxt->rem_rcv_len = cpu_to_le32(remaining_recv_len); 263 ustorm_ag_cxt->exp_data_acked = cpu_to_le32(expected_data_transfer_len); 264 val = cpu_to_le32(expected_data_transfer_len); 265 ustorm_st_cxt->exp_data_transfer_len = val; 266 SET_FIELD(ustorm_st_cxt->reg1.reg1_map, ISCSI_REG1_NUM_SGES, num_sges); 267 SET_FIELD(ustorm_ag_cxt->flags2, 268 USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_EN, 269 tx_dif_conn_err_en ? 1 : 0); 270 } 271 272 static 273 void set_rw_exp_data_acked_and_cont_len(struct iscsi_task_context *context, 274 struct iscsi_conn_params *conn_params, 275 enum iscsi_task_type task_type, 276 u32 task_size, 277 u32 exp_data_transfer_len, 278 u8 total_ahs_length) 279 { 280 u32 max_unsolicited_data = 0, val; 281 282 if (total_ahs_length && 283 (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE || 284 task_type == ISCSI_TASK_TYPE_INITIATOR_READ)) 285 SET_FIELD(context->ustorm_st_context.flags2, 286 USTORM_ISCSI_TASK_ST_CTX_AHS_EXIST, 1); 287 288 switch (task_type) { 289 case ISCSI_TASK_TYPE_INITIATOR_WRITE: 290 if (!conn_params->initial_r2t) 291 max_unsolicited_data = conn_params->first_burst_length; 292 else if (conn_params->immediate_data) 293 max_unsolicited_data = 294 min(conn_params->first_burst_length, 295 conn_params->max_send_pdu_length); 296 297 context->ustorm_ag_context.exp_data_acked = 298 cpu_to_le32(total_ahs_length == 0 ? 299 min(exp_data_transfer_len, 300 max_unsolicited_data) : 301 ((u32)(total_ahs_length + 302 ISCSI_AHS_CNTL_SIZE))); 303 break; 304 case ISCSI_TASK_TYPE_TARGET_READ: 305 val = cpu_to_le32(exp_data_transfer_len); 306 context->ustorm_ag_context.exp_data_acked = val; 307 break; 308 case ISCSI_TASK_TYPE_INITIATOR_READ: 309 context->ustorm_ag_context.exp_data_acked = 310 cpu_to_le32((total_ahs_length == 0 ? 0 : 311 total_ahs_length + 312 ISCSI_AHS_CNTL_SIZE)); 313 break; 314 case ISCSI_TASK_TYPE_TARGET_WRITE: 315 val = cpu_to_le32(task_size); 316 context->ustorm_ag_context.exp_cont_len = val; 317 break; 318 default: 319 break; 320 } 321 } 322 323 static 324 void init_rtdif_task_context(struct rdif_task_context *rdif_context, 325 struct tdif_task_context *tdif_context, 326 struct scsi_dif_task_params *dif_task_params, 327 enum iscsi_task_type task_type) 328 { 329 u32 val; 330 331 if (!dif_task_params->dif_on_network || !dif_task_params->dif_on_host) 332 return; 333 334 if (task_type == ISCSI_TASK_TYPE_TARGET_WRITE || 335 task_type == ISCSI_TASK_TYPE_INITIATOR_READ) { 336 rdif_context->app_tag_value = 337 cpu_to_le16(dif_task_params->application_tag); 338 rdif_context->partial_crc_value = cpu_to_le16(0xffff); 339 val = cpu_to_le32(dif_task_params->initial_ref_tag); 340 rdif_context->initial_ref_tag = val; 341 rdif_context->app_tag_mask = 342 cpu_to_le16(dif_task_params->application_tag_mask); 343 SET_FIELD(rdif_context->flags0, RDIF_TASK_CONTEXT_CRC_SEED, 344 dif_task_params->crc_seed ? 1 : 0); 345 SET_FIELD(rdif_context->flags0, RDIF_TASK_CONTEXT_HOSTGUARDTYPE, 346 dif_task_params->host_guard_type); 347 SET_FIELD(rdif_context->flags0, 348 RDIF_TASK_CONTEXT_PROTECTIONTYPE, 349 dif_task_params->protection_type); 350 SET_FIELD(rdif_context->flags0, 351 RDIF_TASK_CONTEXT_INITIALREFTAGVALID, 1); 352 SET_FIELD(rdif_context->flags0, 353 RDIF_TASK_CONTEXT_KEEPREFTAGCONST, 354 dif_task_params->keep_ref_tag_const ? 1 : 0); 355 SET_FIELD(rdif_context->flags1, 356 RDIF_TASK_CONTEXT_VALIDATEAPPTAG, 357 (dif_task_params->validate_app_tag && 358 dif_task_params->dif_on_network) ? 1 : 0); 359 SET_FIELD(rdif_context->flags1, 360 RDIF_TASK_CONTEXT_VALIDATEGUARD, 361 (dif_task_params->validate_guard && 362 dif_task_params->dif_on_network) ? 1 : 0); 363 SET_FIELD(rdif_context->flags1, 364 RDIF_TASK_CONTEXT_VALIDATEREFTAG, 365 (dif_task_params->validate_ref_tag && 366 dif_task_params->dif_on_network) ? 1 : 0); 367 SET_FIELD(rdif_context->flags1, 368 RDIF_TASK_CONTEXT_HOSTINTERFACE, 369 dif_task_params->dif_on_host ? 1 : 0); 370 SET_FIELD(rdif_context->flags1, 371 RDIF_TASK_CONTEXT_NETWORKINTERFACE, 372 dif_task_params->dif_on_network ? 1 : 0); 373 SET_FIELD(rdif_context->flags1, 374 RDIF_TASK_CONTEXT_FORWARDGUARD, 375 dif_task_params->forward_guard ? 1 : 0); 376 SET_FIELD(rdif_context->flags1, 377 RDIF_TASK_CONTEXT_FORWARDAPPTAG, 378 dif_task_params->forward_app_tag ? 1 : 0); 379 SET_FIELD(rdif_context->flags1, 380 RDIF_TASK_CONTEXT_FORWARDREFTAG, 381 dif_task_params->forward_ref_tag ? 1 : 0); 382 SET_FIELD(rdif_context->flags1, 383 RDIF_TASK_CONTEXT_FORWARDAPPTAGWITHMASK, 384 dif_task_params->forward_app_tag_with_mask ? 1 : 0); 385 SET_FIELD(rdif_context->flags1, 386 RDIF_TASK_CONTEXT_FORWARDREFTAGWITHMASK, 387 dif_task_params->forward_ref_tag_with_mask ? 1 : 0); 388 SET_FIELD(rdif_context->flags1, 389 RDIF_TASK_CONTEXT_INTERVALSIZE, 390 dif_task_params->dif_block_size_log - 9); 391 SET_FIELD(rdif_context->state, 392 RDIF_TASK_CONTEXT_REFTAGMASK, 393 dif_task_params->ref_tag_mask); 394 SET_FIELD(rdif_context->state, RDIF_TASK_CONTEXT_IGNOREAPPTAG, 395 dif_task_params->ignore_app_tag); 396 } 397 398 if (task_type == ISCSI_TASK_TYPE_TARGET_READ || 399 task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) { 400 tdif_context->app_tag_value = 401 cpu_to_le16(dif_task_params->application_tag); 402 tdif_context->partial_crc_valueB = 403 cpu_to_le16(dif_task_params->crc_seed ? 0xffff : 0x0000); 404 tdif_context->partial_crc_value_a = 405 cpu_to_le16(dif_task_params->crc_seed ? 0xffff : 0x0000); 406 SET_FIELD(tdif_context->flags0, TDIF_TASK_CONTEXT_CRC_SEED, 407 dif_task_params->crc_seed ? 1 : 0); 408 409 SET_FIELD(tdif_context->flags0, 410 TDIF_TASK_CONTEXT_SETERRORWITHEOP, 411 dif_task_params->tx_dif_conn_err_en ? 1 : 0); 412 SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_FORWARDGUARD, 413 dif_task_params->forward_guard ? 1 : 0); 414 SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_FORWARDAPPTAG, 415 dif_task_params->forward_app_tag ? 1 : 0); 416 SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_FORWARDREFTAG, 417 dif_task_params->forward_ref_tag ? 1 : 0); 418 SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_INTERVALSIZE, 419 dif_task_params->dif_block_size_log - 9); 420 SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_HOSTINTERFACE, 421 dif_task_params->dif_on_host ? 1 : 0); 422 SET_FIELD(tdif_context->flags1, 423 TDIF_TASK_CONTEXT_NETWORKINTERFACE, 424 dif_task_params->dif_on_network ? 1 : 0); 425 val = cpu_to_le32(dif_task_params->initial_ref_tag); 426 tdif_context->initial_ref_tag = val; 427 tdif_context->app_tag_mask = 428 cpu_to_le16(dif_task_params->application_tag_mask); 429 SET_FIELD(tdif_context->flags0, 430 TDIF_TASK_CONTEXT_HOSTGUARDTYPE, 431 dif_task_params->host_guard_type); 432 SET_FIELD(tdif_context->flags0, 433 TDIF_TASK_CONTEXT_PROTECTIONTYPE, 434 dif_task_params->protection_type); 435 SET_FIELD(tdif_context->flags0, 436 TDIF_TASK_CONTEXT_INITIALREFTAGVALID, 437 dif_task_params->initial_ref_tag_is_valid ? 1 : 0); 438 SET_FIELD(tdif_context->flags0, 439 TDIF_TASK_CONTEXT_KEEPREFTAGCONST, 440 dif_task_params->keep_ref_tag_const ? 1 : 0); 441 SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_VALIDATEGUARD, 442 (dif_task_params->validate_guard && 443 dif_task_params->dif_on_host) ? 1 : 0); 444 SET_FIELD(tdif_context->flags1, 445 TDIF_TASK_CONTEXT_VALIDATEAPPTAG, 446 (dif_task_params->validate_app_tag && 447 dif_task_params->dif_on_host) ? 1 : 0); 448 SET_FIELD(tdif_context->flags1, 449 TDIF_TASK_CONTEXT_VALIDATEREFTAG, 450 (dif_task_params->validate_ref_tag && 451 dif_task_params->dif_on_host) ? 1 : 0); 452 SET_FIELD(tdif_context->flags1, 453 TDIF_TASK_CONTEXT_FORWARDAPPTAGWITHMASK, 454 dif_task_params->forward_app_tag_with_mask ? 1 : 0); 455 SET_FIELD(tdif_context->flags1, 456 TDIF_TASK_CONTEXT_FORWARDREFTAGWITHMASK, 457 dif_task_params->forward_ref_tag_with_mask ? 1 : 0); 458 SET_FIELD(tdif_context->flags1, 459 TDIF_TASK_CONTEXT_REFTAGMASK, 460 dif_task_params->ref_tag_mask); 461 SET_FIELD(tdif_context->flags0, 462 TDIF_TASK_CONTEXT_IGNOREAPPTAG, 463 dif_task_params->ignore_app_tag ? 1 : 0); 464 } 465 } 466 467 static void set_local_completion_context(struct iscsi_task_context *context) 468 { 469 SET_FIELD(context->ystorm_st_context.state.flags, 470 YSTORM_ISCSI_TASK_STATE_LOCAL_COMP, 1); 471 SET_FIELD(context->ustorm_st_context.flags, 472 USTORM_ISCSI_TASK_ST_CTX_LOCAL_COMP, 1); 473 } 474 475 static int init_rw_iscsi_task(struct iscsi_task_params *task_params, 476 enum iscsi_task_type task_type, 477 struct iscsi_conn_params *conn_params, 478 struct iscsi_common_hdr *pdu_header, 479 struct scsi_sgl_task_params *sgl_task_params, 480 struct scsi_initiator_cmd_params *cmd_params, 481 struct scsi_dif_task_params *dif_task_params) 482 { 483 u32 exp_data_transfer_len = conn_params->max_burst_length; 484 struct iscsi_task_context *cxt; 485 bool slow_io = false; 486 u32 task_size, val; 487 u8 num_sges = 0; 488 489 task_size = calc_rw_task_size(task_params, task_type, sgl_task_params, 490 dif_task_params); 491 492 init_default_iscsi_task(task_params, (struct data_hdr *)pdu_header, 493 task_type); 494 495 cxt = task_params->context; 496 497 val = cpu_to_le32(task_size); 498 cxt->ystorm_st_context.pdu_hdr.cmd.expected_transfer_length = val; 499 init_initiator_rw_cdb_ystorm_context(&cxt->ystorm_st_context, 500 cmd_params); 501 val = cpu_to_le32(cmd_params->sense_data_buffer_phys_addr.lo); 502 cxt->mstorm_st_context.sense_db.lo = val; 503 504 val = cpu_to_le32(cmd_params->sense_data_buffer_phys_addr.hi); 505 cxt->mstorm_st_context.sense_db.hi = val; 506 507 if (task_params->tx_io_size) { 508 init_dif_context_flags(&cxt->ystorm_st_context.state.dif_flags, 509 dif_task_params); 510 init_scsi_sgl_context(&cxt->ystorm_st_context.state.sgl_params, 511 &cxt->ystorm_st_context.state.data_desc, 512 sgl_task_params); 513 514 slow_io = scsi_is_slow_sgl(sgl_task_params->num_sges, 515 sgl_task_params->small_mid_sge); 516 517 num_sges = !slow_io ? min_t(u16, sgl_task_params->num_sges, 518 (u16)SCSI_NUM_SGES_SLOW_SGL_THR) : 519 ISCSI_WQE_NUM_SGES_SLOWIO; 520 521 if (slow_io) { 522 SET_FIELD(cxt->ystorm_st_context.state.flags, 523 YSTORM_ISCSI_TASK_STATE_SLOW_IO, 1); 524 } 525 } else if (task_params->rx_io_size) { 526 init_dif_context_flags(&cxt->mstorm_st_context.dif_flags, 527 dif_task_params); 528 init_scsi_sgl_context(&cxt->mstorm_st_context.sgl_params, 529 &cxt->mstorm_st_context.data_desc, 530 sgl_task_params); 531 num_sges = !scsi_is_slow_sgl(sgl_task_params->num_sges, 532 sgl_task_params->small_mid_sge) ? 533 min_t(u16, sgl_task_params->num_sges, 534 (u16)SCSI_NUM_SGES_SLOW_SGL_THR) : 535 ISCSI_WQE_NUM_SGES_SLOWIO; 536 cxt->mstorm_st_context.rem_task_size = cpu_to_le32(task_size); 537 } 538 539 if (exp_data_transfer_len > task_size || 540 task_type != ISCSI_TASK_TYPE_TARGET_WRITE) 541 exp_data_transfer_len = task_size; 542 543 init_ustorm_task_contexts(&task_params->context->ustorm_st_context, 544 &task_params->context->ustorm_ag_context, 545 task_size, exp_data_transfer_len, num_sges, 546 dif_task_params ? 547 dif_task_params->tx_dif_conn_err_en : false); 548 549 set_rw_exp_data_acked_and_cont_len(task_params->context, conn_params, 550 task_type, task_size, 551 exp_data_transfer_len, 552 GET_FIELD(pdu_header->hdr_second_dword, 553 ISCSI_CMD_HDR_TOTAL_AHS_LEN)); 554 555 if (dif_task_params) 556 init_rtdif_task_context(&task_params->context->rdif_context, 557 &task_params->context->tdif_context, 558 dif_task_params, task_type); 559 560 init_sqe(task_params, sgl_task_params, dif_task_params, pdu_header, 561 cmd_params, task_type, false); 562 563 return 0; 564 } 565 566 int init_initiator_rw_iscsi_task(struct iscsi_task_params *task_params, 567 struct iscsi_conn_params *conn_params, 568 struct scsi_initiator_cmd_params *cmd_params, 569 struct iscsi_cmd_hdr *cmd_header, 570 struct scsi_sgl_task_params *tx_sgl_params, 571 struct scsi_sgl_task_params *rx_sgl_params, 572 struct scsi_dif_task_params *dif_task_params) 573 { 574 if (GET_FIELD(cmd_header->flags_attr, ISCSI_CMD_HDR_WRITE)) 575 return init_rw_iscsi_task(task_params, 576 ISCSI_TASK_TYPE_INITIATOR_WRITE, 577 conn_params, 578 (struct iscsi_common_hdr *)cmd_header, 579 tx_sgl_params, cmd_params, 580 dif_task_params); 581 else if (GET_FIELD(cmd_header->flags_attr, ISCSI_CMD_HDR_READ) || 582 (task_params->rx_io_size == 0 && task_params->tx_io_size == 0)) 583 return init_rw_iscsi_task(task_params, 584 ISCSI_TASK_TYPE_INITIATOR_READ, 585 conn_params, 586 (struct iscsi_common_hdr *)cmd_header, 587 rx_sgl_params, cmd_params, 588 dif_task_params); 589 else 590 return -1; 591 } 592 593 int init_initiator_login_request_task(struct iscsi_task_params *task_params, 594 struct iscsi_login_req_hdr *login_header, 595 struct scsi_sgl_task_params *tx_params, 596 struct scsi_sgl_task_params *rx_params) 597 { 598 struct iscsi_task_context *cxt; 599 600 cxt = task_params->context; 601 602 init_default_iscsi_task(task_params, 603 (struct data_hdr *)login_header, 604 ISCSI_TASK_TYPE_MIDPATH); 605 606 init_ustorm_task_contexts(&cxt->ustorm_st_context, 607 &cxt->ustorm_ag_context, 608 task_params->rx_io_size ? 609 rx_params->total_buffer_size : 0, 610 task_params->tx_io_size ? 611 tx_params->total_buffer_size : 0, 0, 612 0); 613 614 if (task_params->tx_io_size) 615 init_scsi_sgl_context(&cxt->ystorm_st_context.state.sgl_params, 616 &cxt->ystorm_st_context.state.data_desc, 617 tx_params); 618 619 if (task_params->rx_io_size) 620 init_scsi_sgl_context(&cxt->mstorm_st_context.sgl_params, 621 &cxt->mstorm_st_context.data_desc, 622 rx_params); 623 624 cxt->mstorm_st_context.rem_task_size = 625 cpu_to_le32(task_params->rx_io_size ? 626 rx_params->total_buffer_size : 0); 627 628 init_sqe(task_params, tx_params, NULL, 629 (struct iscsi_common_hdr *)login_header, NULL, 630 ISCSI_TASK_TYPE_MIDPATH, false); 631 632 return 0; 633 } 634 635 int init_initiator_nop_out_task(struct iscsi_task_params *task_params, 636 struct iscsi_nop_out_hdr *nop_out_pdu_header, 637 struct scsi_sgl_task_params *tx_sgl_task_params, 638 struct scsi_sgl_task_params *rx_sgl_task_params) 639 { 640 struct iscsi_task_context *cxt; 641 642 cxt = task_params->context; 643 644 init_default_iscsi_task(task_params, 645 (struct data_hdr *)nop_out_pdu_header, 646 ISCSI_TASK_TYPE_MIDPATH); 647 648 if (nop_out_pdu_header->itt == ISCSI_ITT_ALL_ONES) 649 set_local_completion_context(task_params->context); 650 651 if (task_params->tx_io_size) 652 init_scsi_sgl_context(&cxt->ystorm_st_context.state.sgl_params, 653 &cxt->ystorm_st_context.state.data_desc, 654 tx_sgl_task_params); 655 656 if (task_params->rx_io_size) 657 init_scsi_sgl_context(&cxt->mstorm_st_context.sgl_params, 658 &cxt->mstorm_st_context.data_desc, 659 rx_sgl_task_params); 660 661 init_ustorm_task_contexts(&cxt->ustorm_st_context, 662 &cxt->ustorm_ag_context, 663 task_params->rx_io_size ? 664 rx_sgl_task_params->total_buffer_size : 0, 665 task_params->tx_io_size ? 666 tx_sgl_task_params->total_buffer_size : 0, 667 0, 0); 668 669 cxt->mstorm_st_context.rem_task_size = 670 cpu_to_le32(task_params->rx_io_size ? 671 rx_sgl_task_params->total_buffer_size : 672 0); 673 674 init_sqe(task_params, tx_sgl_task_params, NULL, 675 (struct iscsi_common_hdr *)nop_out_pdu_header, NULL, 676 ISCSI_TASK_TYPE_MIDPATH, false); 677 678 return 0; 679 } 680 681 int init_initiator_logout_request_task(struct iscsi_task_params *task_params, 682 struct iscsi_logout_req_hdr *logout_hdr, 683 struct scsi_sgl_task_params *tx_params, 684 struct scsi_sgl_task_params *rx_params) 685 { 686 struct iscsi_task_context *cxt; 687 688 cxt = task_params->context; 689 690 init_default_iscsi_task(task_params, 691 (struct data_hdr *)logout_hdr, 692 ISCSI_TASK_TYPE_MIDPATH); 693 694 if (task_params->tx_io_size) 695 init_scsi_sgl_context(&cxt->ystorm_st_context.state.sgl_params, 696 &cxt->ystorm_st_context.state.data_desc, 697 tx_params); 698 699 if (task_params->rx_io_size) 700 init_scsi_sgl_context(&cxt->mstorm_st_context.sgl_params, 701 &cxt->mstorm_st_context.data_desc, 702 rx_params); 703 704 init_ustorm_task_contexts(&cxt->ustorm_st_context, 705 &cxt->ustorm_ag_context, 706 task_params->rx_io_size ? 707 rx_params->total_buffer_size : 0, 708 task_params->tx_io_size ? 709 tx_params->total_buffer_size : 0, 710 0, 0); 711 712 cxt->mstorm_st_context.rem_task_size = 713 cpu_to_le32(task_params->rx_io_size ? 714 rx_params->total_buffer_size : 0); 715 716 init_sqe(task_params, tx_params, NULL, 717 (struct iscsi_common_hdr *)logout_hdr, NULL, 718 ISCSI_TASK_TYPE_MIDPATH, false); 719 720 return 0; 721 } 722 723 int init_initiator_tmf_request_task(struct iscsi_task_params *task_params, 724 struct iscsi_tmf_request_hdr *tmf_header) 725 { 726 init_default_iscsi_task(task_params, (struct data_hdr *)tmf_header, 727 ISCSI_TASK_TYPE_MIDPATH); 728 729 init_sqe(task_params, NULL, NULL, 730 (struct iscsi_common_hdr *)tmf_header, NULL, 731 ISCSI_TASK_TYPE_MIDPATH, false); 732 733 return 0; 734 } 735 736 int init_initiator_text_request_task(struct iscsi_task_params *task_params, 737 struct iscsi_text_request_hdr *text_header, 738 struct scsi_sgl_task_params *tx_params, 739 struct scsi_sgl_task_params *rx_params) 740 { 741 struct iscsi_task_context *cxt; 742 743 cxt = task_params->context; 744 745 init_default_iscsi_task(task_params, 746 (struct data_hdr *)text_header, 747 ISCSI_TASK_TYPE_MIDPATH); 748 749 if (task_params->tx_io_size) 750 init_scsi_sgl_context(&cxt->ystorm_st_context.state.sgl_params, 751 &cxt->ystorm_st_context.state.data_desc, 752 tx_params); 753 754 if (task_params->rx_io_size) 755 init_scsi_sgl_context(&cxt->mstorm_st_context.sgl_params, 756 &cxt->mstorm_st_context.data_desc, 757 rx_params); 758 759 cxt->mstorm_st_context.rem_task_size = 760 cpu_to_le32(task_params->rx_io_size ? 761 rx_params->total_buffer_size : 0); 762 763 init_ustorm_task_contexts(&cxt->ustorm_st_context, 764 &cxt->ustorm_ag_context, 765 task_params->rx_io_size ? 766 rx_params->total_buffer_size : 0, 767 task_params->tx_io_size ? 768 tx_params->total_buffer_size : 0, 0, 0); 769 770 init_sqe(task_params, tx_params, NULL, 771 (struct iscsi_common_hdr *)text_header, NULL, 772 ISCSI_TASK_TYPE_MIDPATH, false); 773 774 return 0; 775 } 776 777 int init_cleanup_task(struct iscsi_task_params *task_params) 778 { 779 init_sqe(task_params, NULL, NULL, NULL, NULL, ISCSI_TASK_TYPE_MIDPATH, 780 true); 781 return 0; 782 } 783