1/*- 2 * Copyright (c) 2017 Broadcom. All rights reserved. 3 * The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright notice, 12 * this list of conditions and the following disclaimer in the documentation 13 * and/or other materials provided with the distribution. 14 * 15 * 3. Neither the name of the copyright holder nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 * 31 * $FreeBSD: stable/11/sys/dev/ocs_fc/ocs_xport.c 344014 2019-02-11 16:28:04Z ram $ 32 */ 33 34/** 35 * @file 36 * FC transport API 37 * 38 */ 39 40#include "ocs.h" 41#include "ocs_device.h" 42 43static void ocs_xport_link_stats_cb(int32_t status, uint32_t num_counters, ocs_hw_link_stat_counts_t *counters, void *arg); 44static void ocs_xport_host_stats_cb(int32_t status, uint32_t num_counters, ocs_hw_host_stat_counts_t *counters, void *arg); 45/** 46 * @brief Post node event callback argument. 47 */ 48typedef struct { 49 ocs_sem_t sem; 50 ocs_node_t *node; 51 ocs_sm_event_t evt; 52 void *context; 53} ocs_xport_post_node_event_t; 54 55/** 56 * @brief Allocate a transport object. 57 * 58 * @par Description 59 * A transport object is allocated, and associated with a device instance. 60 * 61 * @param ocs Pointer to device instance. 62 * 63 * @return Returns the pointer to the allocated transport object, or NULL if failed. 64 */ 65ocs_xport_t * 66ocs_xport_alloc(ocs_t *ocs) 67{ 68 ocs_xport_t *xport; 69 70 ocs_assert(ocs, NULL); 71 xport = ocs_malloc(ocs, sizeof(*xport), OCS_M_ZERO); 72 if (xport != NULL) { 73 xport->ocs = ocs; 74 } 75 return xport; 76} 77 78/** 79 * @brief Create the RQ threads and the circular buffers used to pass sequences. 80 * 81 * @par Description 82 * Creates the circular buffers and the servicing threads for RQ processing. 83 * 84 * @param xport Pointer to transport object 85 * 86 * @return Returns 0 on success, or a non-zero value on failure. 87 */ 88static void 89ocs_xport_rq_threads_teardown(ocs_xport_t *xport) 90{ 91 ocs_t *ocs = xport->ocs; 92 uint32_t i; 93 94 if (xport->num_rq_threads == 0 || 95 xport->rq_thread_info == NULL) { 96 return; 97 } 98 99 /* Abort any threads */ 100 for (i = 0; i < xport->num_rq_threads; i++) { 101 if (xport->rq_thread_info[i].thread_started) { 102 ocs_thread_terminate(&xport->rq_thread_info[i].thread); 103 /* wait for the thread to exit */ 104 ocs_log_debug(ocs, "wait for thread %d to exit\n", i); 105 while (xport->rq_thread_info[i].thread_started) { 106 ocs_udelay(10000); 107 } 108 ocs_log_debug(ocs, "thread %d to exited\n", i); 109 } 110 if (xport->rq_thread_info[i].seq_cbuf != NULL) { 111 ocs_cbuf_free(xport->rq_thread_info[i].seq_cbuf); 112 xport->rq_thread_info[i].seq_cbuf = NULL; 113 } 114 } 115} 116 117/** 118 * @brief Create the RQ threads and the circular buffers used to pass sequences. 119 * 120 * @par Description 121 * Creates the circular buffers and the servicing threads for RQ processing. 122 * 123 * @param xport Pointer to transport object. 124 * @param num_rq_threads Number of RQ processing threads that the 125 * driver creates. 126 * 127 * @return Returns 0 on success, or a non-zero value on failure. 128 */ 129static int32_t 130ocs_xport_rq_threads_create(ocs_xport_t *xport, uint32_t num_rq_threads) 131{ 132 ocs_t *ocs = xport->ocs; 133 int32_t rc = 0; 134 uint32_t i; 135 136 xport->num_rq_threads = num_rq_threads; 137 ocs_log_debug(ocs, "number of RQ threads %d\n", num_rq_threads); 138 if (num_rq_threads == 0) { 139 return 0; 140 } 141 142 /* Allocate the space for the thread objects */ 143 xport->rq_thread_info = ocs_malloc(ocs, sizeof(ocs_xport_rq_thread_info_t) * num_rq_threads, OCS_M_ZERO); 144 if (xport->rq_thread_info == NULL) { 145 ocs_log_err(ocs, "memory allocation failure\n"); 146 return -1; 147 } 148 149 /* Create the circular buffers and threads. */ 150 for (i = 0; i < num_rq_threads; i++) { 151 xport->rq_thread_info[i].ocs = ocs; 152 xport->rq_thread_info[i].seq_cbuf = ocs_cbuf_alloc(ocs, OCS_HW_RQ_NUM_HDR); 153 if (xport->rq_thread_info[i].seq_cbuf == NULL) { 154 goto ocs_xport_rq_threads_create_error; 155 } 156 157 ocs_snprintf(xport->rq_thread_info[i].thread_name, 158 sizeof(xport->rq_thread_info[i].thread_name), 159 "ocs_unsol_rq:%d:%d", ocs->instance_index, i); 160 rc = ocs_thread_create(ocs, &xport->rq_thread_info[i].thread, ocs_unsol_rq_thread, 161 xport->rq_thread_info[i].thread_name, 162 &xport->rq_thread_info[i], OCS_THREAD_RUN); 163 if (rc) { 164 ocs_log_err(ocs, "ocs_thread_create failed: %d\n", rc); 165 goto ocs_xport_rq_threads_create_error; 166 } 167 xport->rq_thread_info[i].thread_started = TRUE; 168 } 169 return 0; 170 171ocs_xport_rq_threads_create_error: 172 ocs_xport_rq_threads_teardown(xport); 173 return -1; 174} 175 176/** 177 * @brief Do as much allocation as possible, but do not initialization the device. 178 * 179 * @par Description 180 * Performs the functions required to get a device ready to run. 181 * 182 * @param xport Pointer to transport object. 183 * 184 * @return Returns 0 on success, or a non-zero value on failure. 185 */ 186int32_t 187ocs_xport_attach(ocs_xport_t *xport) 188{ 189 ocs_t *ocs = xport->ocs; 190 int32_t rc; 191 uint32_t max_sgl; 192 uint32_t n_sgl; 193 uint32_t i; 194 uint32_t value; 195 uint32_t max_remote_nodes; 196 197 /* booleans used for cleanup if initialization fails */ 198 uint8_t io_pool_created = FALSE; 199 uint8_t node_pool_created = FALSE; 200 uint8_t rq_threads_created = FALSE; 201 202 ocs_list_init(&ocs->domain_list, ocs_domain_t, link); 203 204 for (i = 0; i < SLI4_MAX_FCFI; i++) { 205 xport->fcfi[i].hold_frames = 1; 206 ocs_lock_init(ocs, &xport->fcfi[i].pend_frames_lock, "xport pend_frames[%d]", i); 207 ocs_list_init(&xport->fcfi[i].pend_frames, ocs_hw_sequence_t, link); 208 } 209 210 rc = ocs_hw_set_ptr(&ocs->hw, OCS_HW_WAR_VERSION, ocs->hw_war_version); 211 if (rc) { 212 ocs_log_test(ocs, "can't set OCS_HW_WAR_VERSION\n"); 213 return -1; 214 } 215 216 rc = ocs_hw_setup(&ocs->hw, ocs, SLI4_PORT_TYPE_FC); 217 if (rc) { 218 ocs_log_err(ocs, "%s: Can't setup hardware\n", ocs->desc); 219 return -1; 220 } else if (ocs->ctrlmask & OCS_CTRLMASK_CRASH_RESET) { 221 ocs_log_debug(ocs, "stopping after ocs_hw_setup\n"); 222 return -1; 223 } 224 225 ocs_hw_set(&ocs->hw, OCS_HW_BOUNCE, ocs->hw_bounce); 226 ocs_log_debug(ocs, "HW bounce: %d\n", ocs->hw_bounce); 227 228 ocs_hw_set(&ocs->hw, OCS_HW_RQ_SELECTION_POLICY, ocs->rq_selection_policy); 229 ocs_hw_set(&ocs->hw, OCS_HW_RR_QUANTA, ocs->rr_quanta); 230 ocs_hw_get(&ocs->hw, OCS_HW_RQ_SELECTION_POLICY, &value); 231 ocs_log_debug(ocs, "RQ Selection Policy: %d\n", value); 232 233 ocs_hw_set_ptr(&ocs->hw, OCS_HW_FILTER_DEF, (void*) ocs->filter_def); 234 235 ocs_hw_get(&ocs->hw, OCS_HW_MAX_SGL, &max_sgl); 236 max_sgl -= SLI4_SGE_MAX_RESERVED; 237 n_sgl = MIN(OCS_FC_MAX_SGL, max_sgl); 238 239 /* EVT: For chained SGL testing */ 240 if (ocs->ctrlmask & OCS_CTRLMASK_TEST_CHAINED_SGLS) { 241 n_sgl = 4; 242 } 243 244 /* Note: number of SGLs must be set for ocs_node_create_pool */ 245 if (ocs_hw_set(&ocs->hw, OCS_HW_N_SGL, n_sgl) != OCS_HW_RTN_SUCCESS) { 246 ocs_log_err(ocs, "%s: Can't set number of SGLs\n", ocs->desc); 247 return -1; 248 } else { 249 ocs_log_debug(ocs, "%s: Configured for %d SGLs\n", ocs->desc, n_sgl); 250 } 251 252 ocs_hw_get(&ocs->hw, OCS_HW_MAX_NODES, &max_remote_nodes); 253 254 if (!ocs->max_remote_nodes) 255 ocs->max_remote_nodes = max_remote_nodes; 256 257 rc = ocs_node_create_pool(ocs, ocs->max_remote_nodes); 258 if (rc) { 259 ocs_log_err(ocs, "Can't allocate node pool\n"); 260 goto ocs_xport_attach_cleanup; 261 } else { 262 node_pool_created = TRUE; 263 } 264 265 /* EVT: if testing chained SGLs allocate OCS_FC_MAX_SGL SGE's in the IO */ 266 xport->io_pool = ocs_io_pool_create(ocs, ocs->num_scsi_ios, 267 (ocs->ctrlmask & OCS_CTRLMASK_TEST_CHAINED_SGLS) ? OCS_FC_MAX_SGL : n_sgl); 268 if (xport->io_pool == NULL) { 269 ocs_log_err(ocs, "Can't allocate IO pool\n"); 270 goto ocs_xport_attach_cleanup; 271 } else { 272 io_pool_created = TRUE; 273 } 274 275 /* 276 * setup the RQ processing threads 277 */ 278 if (ocs_xport_rq_threads_create(xport, ocs->rq_threads) != 0) { 279 ocs_log_err(ocs, "failure creating RQ threads\n"); 280 goto ocs_xport_attach_cleanup; 281 } 282 rq_threads_created = TRUE; 283 284 return 0; 285 286ocs_xport_attach_cleanup: 287 if (io_pool_created) { 288 ocs_io_pool_free(xport->io_pool); 289 } 290 291 if (node_pool_created) { 292 ocs_node_free_pool(ocs); 293 } 294 295 if (rq_threads_created) { 296 ocs_xport_rq_threads_teardown(xport); 297 } 298 299 return -1; 300} 301 302/** 303 * @brief Determines how to setup auto Xfer ready. 304 * 305 * @par Description 306 * @param xport Pointer to transport object. 307 * 308 * @return Returns 0 on success or a non-zero value on failure. 309 */ 310static int32_t 311ocs_xport_initialize_auto_xfer_ready(ocs_xport_t *xport) 312{ 313 ocs_t *ocs = xport->ocs; 314 uint32_t auto_xfer_rdy; 315 char prop_buf[32]; 316 uint32_t ramdisc_blocksize = 512; 317 uint8_t p_type = 0; 318 319 ocs_hw_get(&ocs->hw, OCS_HW_AUTO_XFER_RDY_CAPABLE, &auto_xfer_rdy); 320 if (!auto_xfer_rdy) { 321 ocs->auto_xfer_rdy_size = 0; 322 ocs_log_test(ocs, "Cannot enable auto xfer rdy for this port\n"); 323 return 0; 324 } 325 326 if (ocs_hw_set(&ocs->hw, OCS_HW_AUTO_XFER_RDY_SIZE, ocs->auto_xfer_rdy_size)) { 327 ocs_log_test(ocs, "%s: Can't set auto xfer rdy mode\n", ocs->desc); 328 return -1; 329 } 330 331 /* 332 * Determine if we are doing protection in the backend. We are looking 333 * at the modules parameters here. The backend cannot allow a format 334 * command to change the protection mode when using this feature, 335 * otherwise the firmware will not do the proper thing. 336 */ 337 if (ocs_get_property("p_type", prop_buf, sizeof(prop_buf)) == 0) { 338 p_type = ocs_strtoul(prop_buf, 0, 0); 339 } 340 if (ocs_get_property("ramdisc_blocksize", prop_buf, sizeof(prop_buf)) == 0) { 341 ramdisc_blocksize = ocs_strtoul(prop_buf, 0, 0); 342 } 343 if (ocs_get_property("external_dif", prop_buf, sizeof(prop_buf)) == 0) { 344 if(ocs_strlen(prop_buf)) { 345 if (p_type == 0) { 346 p_type = 1; 347 } 348 } 349 } 350 351 if (p_type != 0) { 352 if (ocs_hw_set(&ocs->hw, OCS_HW_AUTO_XFER_RDY_T10_ENABLE, TRUE)) { 353 ocs_log_test(ocs, "%s: Can't set auto xfer rdy mode\n", ocs->desc); 354 return -1; 355 } 356 if (ocs_hw_set(&ocs->hw, OCS_HW_AUTO_XFER_RDY_BLK_SIZE, ramdisc_blocksize)) { 357 ocs_log_test(ocs, "%s: Can't set auto xfer rdy blk size\n", ocs->desc); 358 return -1; 359 } 360 if (ocs_hw_set(&ocs->hw, OCS_HW_AUTO_XFER_RDY_P_TYPE, p_type)) { 361 ocs_log_test(ocs, "%s: Can't set auto xfer rdy mode\n", ocs->desc); 362 return -1; 363 } 364 if (ocs_hw_set(&ocs->hw, OCS_HW_AUTO_XFER_RDY_REF_TAG_IS_LBA, TRUE)) { 365 ocs_log_test(ocs, "%s: Can't set auto xfer rdy ref tag\n", ocs->desc); 366 return -1; 367 } 368 if (ocs_hw_set(&ocs->hw, OCS_HW_AUTO_XFER_RDY_APP_TAG_VALID, FALSE)) { 369 ocs_log_test(ocs, "%s: Can't set auto xfer rdy app tag valid\n", ocs->desc); 370 return -1; 371 } 372 } 373 ocs_log_debug(ocs, "Auto xfer rdy is enabled, p_type=%d, blksize=%d\n", 374 p_type, ramdisc_blocksize); 375 return 0; 376} 377 378/** 379 * @brief Initializes the device. 380 * 381 * @par Description 382 * Performs the functions required to make a device functional. 383 * 384 * @param xport Pointer to transport object. 385 * 386 * @return Returns 0 on success, or a non-zero value on failure. 387 */ 388int32_t 389ocs_xport_initialize(ocs_xport_t *xport) 390{ 391 ocs_t *ocs = xport->ocs; 392 int32_t rc; 393 uint32_t i; 394 uint32_t max_hw_io; 395 uint32_t max_sgl; 396 uint32_t hlm; 397 uint32_t rq_limit; 398 uint32_t dif_capable; 399 uint8_t dif_separate = 0; 400 char prop_buf[32]; 401 402 /* booleans used for cleanup if initialization fails */ 403 uint8_t ini_device_set = FALSE; 404 uint8_t tgt_device_set = FALSE; 405 uint8_t hw_initialized = FALSE; 406 407 ocs_hw_get(&ocs->hw, OCS_HW_MAX_IO, &max_hw_io); 408 if (ocs_hw_set(&ocs->hw, OCS_HW_N_IO, max_hw_io) != OCS_HW_RTN_SUCCESS) { 409 ocs_log_err(ocs, "%s: Can't set number of IOs\n", ocs->desc); 410 return -1; 411 } 412 413 ocs_hw_get(&ocs->hw, OCS_HW_MAX_SGL, &max_sgl); 414 max_sgl -= SLI4_SGE_MAX_RESERVED; 415 416 if (ocs->enable_hlm) { 417 ocs_hw_get(&ocs->hw, OCS_HW_HIGH_LOGIN_MODE, &hlm); 418 if (!hlm) { 419 ocs->enable_hlm = FALSE; 420 ocs_log_err(ocs, "Cannot enable high login mode for this port\n"); 421 } else { 422 ocs_log_debug(ocs, "High login mode is enabled\n"); 423 if (ocs_hw_set(&ocs->hw, OCS_HW_HIGH_LOGIN_MODE, TRUE)) { 424 ocs_log_err(ocs, "%s: Can't set high login mode\n", ocs->desc); 425 return -1; 426 } 427 } 428 } 429 430 /* validate the auto xfer_rdy size */ 431 if (ocs->auto_xfer_rdy_size > 0 && 432 (ocs->auto_xfer_rdy_size < 2048 || 433 ocs->auto_xfer_rdy_size > 65536)) { 434 ocs_log_err(ocs, "Auto XFER_RDY size is out of range (2K-64K)\n"); 435 return -1; 436 } 437 438 ocs_hw_get(&ocs->hw, OCS_HW_MAX_IO, &max_hw_io); 439 440 if (ocs->auto_xfer_rdy_size > 0) { 441 if (ocs_xport_initialize_auto_xfer_ready(xport)) { 442 ocs_log_err(ocs, "%s: Failed auto xfer ready setup\n", ocs->desc); 443 return -1; 444 } 445 if (ocs->esoc){ 446 ocs_hw_set(&ocs->hw, OCS_ESOC, TRUE); 447 } 448 } 449 450 if (ocs->explicit_buffer_list) { 451 /* Are pre-registered SGL's required? */ 452 ocs_hw_get(&ocs->hw, OCS_HW_PREREGISTER_SGL, &i); 453 if (i == TRUE) { 454 ocs_log_err(ocs, "Explicit Buffer List not supported on this device, not enabled\n"); 455 } else { 456 ocs_hw_set(&ocs->hw, OCS_HW_PREREGISTER_SGL, FALSE); 457 } 458 } 459 460 if (ocs_hw_set(&ocs->hw, OCS_HW_TOPOLOGY, ocs->topology) != OCS_HW_RTN_SUCCESS) { 461 ocs_log_err(ocs, "%s: Can't set the toplogy\n", ocs->desc); 462 return -1; 463 } 464 ocs_hw_set(&ocs->hw, OCS_HW_RQ_DEFAULT_BUFFER_SIZE, OCS_FC_RQ_SIZE_DEFAULT); 465 466 if (ocs_hw_set(&ocs->hw, OCS_HW_LINK_SPEED, ocs->speed) != OCS_HW_RTN_SUCCESS) { 467 ocs_log_err(ocs, "%s: Can't set the link speed\n", ocs->desc); 468 return -1; 469 } 470 471 if (ocs_hw_set(&ocs->hw, OCS_HW_ETH_LICENSE, ocs->ethernet_license) != OCS_HW_RTN_SUCCESS) { 472 ocs_log_err(ocs, "%s: Can't set the ethernet license\n", ocs->desc); 473 return -1; 474 } 475 476 /* currently only lancer support setting the CRC seed value */ 477 if (ocs->hw.sli.asic_type == SLI4_ASIC_TYPE_LANCER) { 478 if (ocs_hw_set(&ocs->hw, OCS_HW_DIF_SEED, OCS_FC_DIF_SEED) != OCS_HW_RTN_SUCCESS) { 479 ocs_log_err(ocs, "%s: Can't set the DIF seed\n", ocs->desc); 480 return -1; 481 } 482 } 483 484 /* Set the Dif mode */ 485 if (0 == ocs_hw_get(&ocs->hw, OCS_HW_DIF_CAPABLE, &dif_capable)) { 486 if (dif_capable) { 487 if (ocs_get_property("dif_separate", prop_buf, sizeof(prop_buf)) == 0) { 488 dif_separate = ocs_strtoul(prop_buf, 0, 0); 489 } 490 491 if ((rc = ocs_hw_set(&ocs->hw, OCS_HW_DIF_MODE, 492 (dif_separate == 0 ? OCS_HW_DIF_MODE_INLINE : OCS_HW_DIF_MODE_SEPARATE)))) { 493 ocs_log_err(ocs, "Requested DIF MODE not supported\n"); 494 } 495 } 496 } 497 498 if (ocs->target_io_timer_sec) { 499 ocs_log_debug(ocs, "setting target io timer=%d\n", ocs->target_io_timer_sec); 500 ocs_hw_set(&ocs->hw, OCS_HW_EMULATE_TARGET_WQE_TIMEOUT, TRUE); 501 } 502 503 ocs_hw_callback(&ocs->hw, OCS_HW_CB_DOMAIN, ocs_domain_cb, ocs); 504 ocs_hw_callback(&ocs->hw, OCS_HW_CB_REMOTE_NODE, ocs_remote_node_cb, ocs); 505 ocs_hw_callback(&ocs->hw, OCS_HW_CB_UNSOLICITED, ocs_unsolicited_cb, ocs); 506 ocs_hw_callback(&ocs->hw, OCS_HW_CB_PORT, ocs_port_cb, ocs); 507 508 ocs->fw_version = (const char*) ocs_hw_get_ptr(&ocs->hw, OCS_HW_FW_REV); 509 510 /* Initialize vport list */ 511 ocs_list_init(&xport->vport_list, ocs_vport_spec_t, link); 512 ocs_lock_init(ocs, &xport->io_pending_lock, "io_pending_lock[%d]", ocs->instance_index); 513 ocs_list_init(&xport->io_pending_list, ocs_io_t, io_pending_link); 514 ocs_atomic_init(&xport->io_active_count, 0); 515 ocs_atomic_init(&xport->io_pending_count, 0); 516 ocs_atomic_init(&xport->io_total_free, 0); 517 ocs_atomic_init(&xport->io_total_pending, 0); 518 ocs_atomic_init(&xport->io_alloc_failed_count, 0); 519 ocs_atomic_init(&xport->io_pending_recursing, 0); 520 ocs_lock_init(ocs, &ocs->hw.watchdog_lock, " Watchdog Lock[%d]", ocs_instance(ocs)); 521 rc = ocs_hw_init(&ocs->hw); 522 if (rc) { 523 ocs_log_err(ocs, "ocs_hw_init failure\n"); 524 goto ocs_xport_init_cleanup; 525 } else { 526 hw_initialized = TRUE; 527 } 528 529 rq_limit = max_hw_io/2; 530 if (ocs_hw_set(&ocs->hw, OCS_HW_RQ_PROCESS_LIMIT, rq_limit) != OCS_HW_RTN_SUCCESS) { 531 ocs_log_err(ocs, "%s: Can't set the RQ process limit\n", ocs->desc); 532 } 533 534 if (ocs->config_tgt) { 535 rc = ocs_scsi_tgt_new_device(ocs); 536 if (rc) { 537 ocs_log_err(ocs, "failed to initialize target\n"); 538 goto ocs_xport_init_cleanup; 539 } else { 540 tgt_device_set = TRUE; 541 } 542 } 543 544 if (ocs->enable_ini) { 545 rc = ocs_scsi_ini_new_device(ocs); 546 if (rc) { 547 ocs_log_err(ocs, "failed to initialize initiator\n"); 548 goto ocs_xport_init_cleanup; 549 } else { 550 ini_device_set = TRUE; 551 } 552 553 } 554 555 /* Add vports */ 556 if (ocs->num_vports != 0) { 557 558 uint32_t max_vports; 559 ocs_hw_get(&ocs->hw, OCS_HW_MAX_VPORTS, &max_vports); 560 561 if (ocs->num_vports < max_vports) { 562 ocs_log_debug(ocs, "Provisioning %d vports\n", ocs->num_vports); 563 for (i = 0; i < ocs->num_vports; i++) { 564 ocs_vport_create_spec(ocs, 0, 0, UINT32_MAX, ocs->enable_ini, ocs->enable_tgt, NULL, NULL); 565 } 566 } else { 567 ocs_log_err(ocs, "failed to create vports. num_vports range should be (1-%d) \n", max_vports-1); 568 goto ocs_xport_init_cleanup; 569 } 570 } 571 572 return 0; 573 574ocs_xport_init_cleanup: 575 if (ini_device_set) { 576 ocs_scsi_ini_del_device(ocs); 577 } 578 579 if (tgt_device_set) { 580 ocs_scsi_tgt_del_device(ocs); 581 } 582 583 if (hw_initialized) { 584 /* ocs_hw_teardown can only execute after ocs_hw_init */ 585 ocs_hw_teardown(&ocs->hw); 586 } 587 588 return -1; 589} 590 591/** 592 * @brief Detaches the transport from the device. 593 * 594 * @par Description 595 * Performs the functions required to shut down a device. 596 * 597 * @param xport Pointer to transport object. 598 * 599 * @return Returns 0 on success or a non-zero value on failure. 600 */ 601int32_t 602ocs_xport_detach(ocs_xport_t *xport) 603{ 604 ocs_t *ocs = xport->ocs; 605 606 /* free resources associated with target-server and initiator-client */ 607 if (ocs->config_tgt) 608 ocs_scsi_tgt_del_device(ocs); 609 610 if (ocs->enable_ini) { 611 ocs_scsi_ini_del_device(ocs); 612 613 /*Shutdown FC Statistics timer*/ 614 if (ocs_timer_pending(&ocs->xport->stats_timer)) 615 ocs_del_timer(&ocs->xport->stats_timer); 616 } 617 618 ocs_hw_teardown(&ocs->hw); 619 620 return 0; 621} 622 623/** 624 * @brief domain list empty callback 625 * 626 * @par Description 627 * Function is invoked when the device domain list goes empty. By convention 628 * @c arg points to an ocs_sem_t instance, that is incremented. 629 * 630 * @param ocs Pointer to device object. 631 * @param arg Pointer to semaphore instance. 632 * 633 * @return None. 634 */ 635 636static void 637ocs_xport_domain_list_empty_cb(ocs_t *ocs, void *arg) 638{ 639 ocs_sem_t *sem = arg; 640 641 ocs_assert(ocs); 642 ocs_assert(sem); 643 644 ocs_sem_v(sem); 645} 646 647/** 648 * @brief post node event callback 649 * 650 * @par Description 651 * This function is called from the mailbox completion interrupt context to post an 652 * event to a node object. By doing this in the interrupt context, it has 653 * the benefit of only posting events in the interrupt context, deferring the need to 654 * create a per event node lock. 655 * 656 * @param hw Pointer to HW structure. 657 * @param status Completion status for mailbox command. 658 * @param mqe Mailbox queue completion entry. 659 * @param arg Callback argument. 660 * 661 * @return Returns 0 on success, a negative error code value on failure. 662 */ 663 664static int32_t 665ocs_xport_post_node_event_cb(ocs_hw_t *hw, int32_t status, uint8_t *mqe, void *arg) 666{ 667 ocs_xport_post_node_event_t *payload = arg; 668 669 if (payload != NULL) { 670 ocs_node_post_event(payload->node, payload->evt, payload->context); 671 ocs_sem_v(&payload->sem); 672 } 673 674 return 0; 675} 676 677/** 678 * @brief Initiate force free. 679 * 680 * @par Description 681 * Perform force free of OCS. 682 * 683 * @param xport Pointer to transport object. 684 * 685 * @return None. 686 */ 687 688static void 689ocs_xport_force_free(ocs_xport_t *xport) 690{ 691 ocs_t *ocs = xport->ocs; 692 ocs_domain_t *domain; 693 ocs_domain_t *next; 694 695 ocs_log_debug(ocs, "reset required, do force shutdown\n"); 696 ocs_device_lock(ocs); 697 ocs_list_foreach_safe(&ocs->domain_list, domain, next) { 698 ocs_domain_force_free(domain); 699 } 700 ocs_device_unlock(ocs); 701} 702 703/** 704 * @brief Perform transport attach function. 705 * 706 * @par Description 707 * Perform the attach function, which for the FC transport makes a HW call 708 * to bring up the link. 709 * 710 * @param xport pointer to transport object. 711 * @param cmd command to execute. 712 * 713 * ocs_xport_control(ocs_xport_t *xport, OCS_XPORT_PORT_ONLINE) 714 * ocs_xport_control(ocs_xport_t *xport, OCS_XPORT_PORT_OFFLINE) 715 * ocs_xport_control(ocs_xport_t *xport, OCS_XPORT_PORT_SHUTDOWN) 716 * ocs_xport_control(ocs_xport_t *xport, OCS_XPORT_POST_NODE_EVENT, ocs_node_t *node, ocs_sm_event_t, void *context) 717 * 718 * @return Returns 0 on success, or a negative error code value on failure. 719 */ 720 721int32_t 722ocs_xport_control(ocs_xport_t *xport, ocs_xport_ctrl_e cmd, ...) 723{ 724 uint32_t rc = 0; 725 ocs_t *ocs = NULL; 726 va_list argp; 727 728 ocs_assert(xport, -1); 729 ocs_assert(xport->ocs, -1); 730 ocs = xport->ocs; 731 732 switch (cmd) { 733 case OCS_XPORT_PORT_ONLINE: { 734 /* Bring the port on-line */ 735 rc = ocs_hw_port_control(&ocs->hw, OCS_HW_PORT_INIT, 0, NULL, NULL); 736 if (rc) { 737 ocs_log_err(ocs, "%s: Can't init port\n", ocs->desc); 738 } else { 739 xport->configured_link_state = cmd; 740 } 741 break; 742 } 743 case OCS_XPORT_PORT_OFFLINE: { 744 if (ocs_hw_port_control(&ocs->hw, OCS_HW_PORT_SHUTDOWN, 0, NULL, NULL)) { 745 ocs_log_err(ocs, "port shutdown failed\n"); 746 } else { 747 xport->configured_link_state = cmd; 748 } 749 break; 750 } 751 752 case OCS_XPORT_SHUTDOWN: { 753 ocs_sem_t sem; 754 uint32_t reset_required; 755 756 /* if a PHYSDEV reset was performed (e.g. hw dump), will affect 757 * all PCI functions; orderly shutdown won't work, just force free 758 */ 759 /* TODO: need to poll this regularly... */ 760 if (ocs_hw_get(&ocs->hw, OCS_HW_RESET_REQUIRED, &reset_required) != OCS_HW_RTN_SUCCESS) { 761 reset_required = 0; 762 } 763 764 if (reset_required) { 765 ocs_log_debug(ocs, "reset required, do force shutdown\n"); 766 ocs_xport_force_free(xport); 767 break; 768 } 769 ocs_sem_init(&sem, 0, "domain_list_sem"); 770 ocs_register_domain_list_empty_cb(ocs, ocs_xport_domain_list_empty_cb, &sem); 771 772 if (ocs_hw_port_control(&ocs->hw, OCS_HW_PORT_SHUTDOWN, 0, NULL, NULL)) { 773 ocs_log_debug(ocs, "port shutdown failed, do force shutdown\n"); 774 ocs_xport_force_free(xport); 775 } else { 776 ocs_log_debug(ocs, "Waiting %d seconds for domain shutdown.\n", (OCS_FC_DOMAIN_SHUTDOWN_TIMEOUT_USEC/1000000)); 777 778 rc = ocs_sem_p(&sem, OCS_FC_DOMAIN_SHUTDOWN_TIMEOUT_USEC); 779 if (rc) { 780 ocs_log_debug(ocs, "Note: Domain shutdown timed out\n"); 781 ocs_xport_force_free(xport); 782 } 783 } 784 785 ocs_register_domain_list_empty_cb(ocs, NULL, NULL); 786 787 /* Free up any saved virtual ports */ 788 ocs_vport_del_all(ocs); 789 break; 790 } 791 792 /* 793 * POST_NODE_EVENT: post an event to a node object 794 * 795 * This transport function is used to post an event to a node object. It does 796 * this by submitting a NOP mailbox command to defer execution to the 797 * interrupt context (thereby enforcing the serialized execution of event posting 798 * to the node state machine instances) 799 * 800 * A counting semaphore is used to make the call synchronous (we wait until 801 * the callback increments the semaphore before returning (or times out) 802 */ 803 case OCS_XPORT_POST_NODE_EVENT: { 804 ocs_node_t *node; 805 ocs_sm_event_t evt; 806 void *context; 807 ocs_xport_post_node_event_t payload; 808 ocs_t *ocs; 809 ocs_hw_t *hw; 810 811 /* Retrieve arguments */ 812 va_start(argp, cmd); 813 node = va_arg(argp, ocs_node_t*); 814 evt = va_arg(argp, ocs_sm_event_t); 815 context = va_arg(argp, void *); 816 va_end(argp); 817 818 ocs_assert(node, -1); 819 ocs_assert(node->ocs, -1); 820 821 ocs = node->ocs; 822 hw = &ocs->hw; 823 824 /* if node's state machine is disabled, don't bother continuing */ 825 if (!node->sm.current_state) { 826 ocs_log_test(ocs, "node %p state machine disabled\n", node); 827 return -1; 828 } 829 830 /* Setup payload */ 831 ocs_memset(&payload, 0, sizeof(payload)); 832 ocs_sem_init(&payload.sem, 0, "xport_post_node_Event"); 833 payload.node = node; 834 payload.evt = evt; 835 payload.context = context; 836 837 if (ocs_hw_async_call(hw, ocs_xport_post_node_event_cb, &payload)) { 838 ocs_log_test(ocs, "ocs_hw_async_call failed\n"); 839 rc = -1; 840 break; 841 } 842 843 /* Wait for completion */ 844 if (ocs_sem_p(&payload.sem, OCS_SEM_FOREVER)) { 845 ocs_log_test(ocs, "POST_NODE_EVENT: sem wait failed\n"); 846 rc = -1; 847 } 848 849 break; 850 } 851 /* 852 * Set wwnn for the port. This will be used instead of the default provided by FW. 853 */ 854 case OCS_XPORT_WWNN_SET: { 855 uint64_t wwnn; 856 857 /* Retrieve arguments */ 858 va_start(argp, cmd); 859 wwnn = va_arg(argp, uint64_t); 860 va_end(argp); 861 862 ocs_log_debug(ocs, " WWNN %016" PRIx64 "\n", wwnn); 863 xport->req_wwnn = wwnn; 864 865 break; 866 } 867 /* 868 * Set wwpn for the port. This will be used instead of the default provided by FW. 869 */ 870 case OCS_XPORT_WWPN_SET: { 871 uint64_t wwpn; 872 873 /* Retrieve arguments */ 874 va_start(argp, cmd); 875 wwpn = va_arg(argp, uint64_t); 876 va_end(argp); 877 878 ocs_log_debug(ocs, " WWPN %016" PRIx64 "\n", wwpn); 879 xport->req_wwpn = wwpn; 880 881 break; 882 } 883 884 885 default: 886 break; 887 } 888 return rc; 889} 890 891/** 892 * @brief Return status on a link. 893 * 894 * @par Description 895 * Returns status information about a link. 896 * 897 * @param xport Pointer to transport object. 898 * @param cmd Command to execute. 899 * @param result Pointer to result value. 900 * 901 * ocs_xport_status(ocs_xport_t *xport, OCS_XPORT_PORT_STATUS) 902 * ocs_xport_status(ocs_xport_t *xport, OCS_XPORT_LINK_SPEED, ocs_xport_stats_t *result) 903 * return link speed in MB/sec 904 * ocs_xport_status(ocs_xport_t *xport, OCS_XPORT_IS_SUPPORTED_LINK_SPEED, ocs_xport_stats_t *result) 905 * [in] *result is speed to check in MB/s 906 * returns 1 if supported, 0 if not 907 * ocs_xport_status(ocs_xport_t *xport, OCS_XPORT_LINK_STATISTICS, ocs_xport_stats_t *result) 908 * return link/host port stats 909 * ocs_xport_status(ocs_xport_t *xport, OCS_XPORT_LINK_STAT_RESET, ocs_xport_stats_t *result) 910 * resets link/host stats 911 * 912 * 913 * @return Returns 0 on success, or a negative error code value on failure. 914 */ 915 916int32_t 917ocs_xport_status(ocs_xport_t *xport, ocs_xport_status_e cmd, ocs_xport_stats_t *result) 918{ 919 uint32_t rc = 0; 920 ocs_t *ocs = NULL; 921 ocs_xport_stats_t value; 922 ocs_hw_rtn_e hw_rc; 923 924 ocs_assert(xport, -1); 925 ocs_assert(xport->ocs, -1); 926 927 ocs = xport->ocs; 928 929 switch (cmd) { 930 case OCS_XPORT_CONFIG_PORT_STATUS: 931 ocs_assert(result, -1); 932 if (xport->configured_link_state == 0) { 933 /* Initial state is offline. configured_link_state is */ 934 /* set to online explicitly when port is brought online. */ 935 xport->configured_link_state = OCS_XPORT_PORT_OFFLINE; 936 } 937 result->value = xport->configured_link_state; 938 break; 939 940 case OCS_XPORT_PORT_STATUS: 941 ocs_assert(result, -1); 942 /* Determine port status based on link speed. */ 943 hw_rc = ocs_hw_get(&(ocs->hw), OCS_HW_LINK_SPEED, &value.value); 944 if (hw_rc == OCS_HW_RTN_SUCCESS) { 945 if (value.value == 0) { 946 result->value = 0; 947 } else { 948 result->value = 1; 949 } 950 rc = 0; 951 } else { 952 rc = -1; 953 } 954 break; 955 956 case OCS_XPORT_LINK_SPEED: { 957 uint32_t speed; 958 959 ocs_assert(result, -1); 960 result->value = 0; 961 962 rc = ocs_hw_get(&ocs->hw, OCS_HW_LINK_SPEED, &speed); 963 if (rc == 0) { 964 result->value = speed; 965 } 966 break; 967 } 968 969 case OCS_XPORT_IS_SUPPORTED_LINK_SPEED: { 970 uint32_t speed; 971 uint32_t link_module_type; 972 973 ocs_assert(result, -1); 974 speed = result->value; 975 976 rc = ocs_hw_get(&ocs->hw, OCS_HW_LINK_MODULE_TYPE, &link_module_type); 977 if (rc == 0) { 978 switch(speed) { 979 case 1000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_1GB) != 0; break; 980 case 2000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_2GB) != 0; break; 981 case 4000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_4GB) != 0; break; 982 case 8000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_8GB) != 0; break; 983 case 10000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_10GB) != 0; break; 984 case 16000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_16GB) != 0; break; 985 case 32000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_32GB) != 0; break; 986 default: rc = 0; break; 987 } 988 } else { 989 rc = 0; 990 } 991 break; 992 } 993 case OCS_XPORT_LINK_STATISTICS: 994 ocs_device_lock(ocs); 995 ocs_memcpy((void *)result, &ocs->xport->fc_xport_stats, sizeof(ocs_xport_stats_t)); 996 ocs_device_unlock(ocs); 997 break; 998 case OCS_XPORT_LINK_STAT_RESET: { 999 /* Create a semaphore to synchronize the stat reset process. */ 1000 ocs_sem_init(&(result->stats.semaphore), 0, "fc_stats_reset"); 1001 1002 /* First reset the link stats */ 1003 if ((rc = ocs_hw_get_link_stats(&ocs->hw, 0, 1, 1, ocs_xport_link_stats_cb, result)) != 0) { 1004 ocs_log_err(ocs, "%s: Failed to reset link statistics\n", __func__); 1005 break; 1006 } 1007 1008 /* Wait for semaphore to be signaled when the command completes */ 1009 /* TODO: Should there be a timeout on this? If so, how long? */ 1010 if (ocs_sem_p(&(result->stats.semaphore), OCS_SEM_FOREVER) != 0) { 1011 /* Undefined failure */ 1012 ocs_log_test(ocs, "ocs_sem_p failed\n"); 1013 rc = -ENXIO; 1014 break; 1015 } 1016 1017 /* Next reset the host stats */ 1018 if ((rc = ocs_hw_get_host_stats(&ocs->hw, 1, ocs_xport_host_stats_cb, result)) != 0) { 1019 ocs_log_err(ocs, "%s: Failed to reset host statistics\n", __func__); 1020 break; 1021 } 1022 1023 /* Wait for semaphore to be signaled when the command completes */ 1024 if (ocs_sem_p(&(result->stats.semaphore), OCS_SEM_FOREVER) != 0) { 1025 /* Undefined failure */ 1026 ocs_log_test(ocs, "ocs_sem_p failed\n"); 1027 rc = -ENXIO; 1028 break; 1029 } 1030 break; 1031 } 1032 case OCS_XPORT_IS_QUIESCED: 1033 ocs_device_lock(ocs); 1034 result->value = ocs_list_empty(&ocs->domain_list); 1035 ocs_device_unlock(ocs); 1036 break; 1037 default: 1038 rc = -1; 1039 break; 1040 } 1041 1042 return rc; 1043 1044} 1045 1046static void 1047ocs_xport_link_stats_cb(int32_t status, uint32_t num_counters, ocs_hw_link_stat_counts_t *counters, void *arg) 1048{ 1049 ocs_xport_stats_t *result = arg; 1050 1051 result->stats.link_stats.link_failure_error_count = counters[OCS_HW_LINK_STAT_LINK_FAILURE_COUNT].counter; 1052 result->stats.link_stats.loss_of_sync_error_count = counters[OCS_HW_LINK_STAT_LOSS_OF_SYNC_COUNT].counter; 1053 result->stats.link_stats.primitive_sequence_error_count = counters[OCS_HW_LINK_STAT_PRIMITIVE_SEQ_COUNT].counter; 1054 result->stats.link_stats.invalid_transmission_word_error_count = counters[OCS_HW_LINK_STAT_INVALID_XMIT_WORD_COUNT].counter; 1055 result->stats.link_stats.crc_error_count = counters[OCS_HW_LINK_STAT_CRC_COUNT].counter; 1056 1057 ocs_sem_v(&(result->stats.semaphore)); 1058} 1059 1060 1061static void 1062ocs_xport_host_stats_cb(int32_t status, uint32_t num_counters, ocs_hw_host_stat_counts_t *counters, void *arg) 1063{ 1064 ocs_xport_stats_t *result = arg; 1065 1066 result->stats.host_stats.transmit_kbyte_count = counters[OCS_HW_HOST_STAT_TX_KBYTE_COUNT].counter; 1067 result->stats.host_stats.receive_kbyte_count = counters[OCS_HW_HOST_STAT_RX_KBYTE_COUNT].counter; 1068 result->stats.host_stats.transmit_frame_count = counters[OCS_HW_HOST_STAT_TX_FRAME_COUNT].counter; 1069 result->stats.host_stats.receive_frame_count = counters[OCS_HW_HOST_STAT_RX_FRAME_COUNT].counter; 1070 1071 ocs_sem_v(&(result->stats.semaphore)); 1072} 1073 1074 1075/** 1076 * @brief Free a transport object. 1077 * 1078 * @par Description 1079 * The transport object is freed. 1080 * 1081 * @param xport Pointer to transport object. 1082 * 1083 * @return None. 1084 */ 1085 1086void 1087ocs_xport_free(ocs_xport_t *xport) 1088{ 1089 ocs_t *ocs; 1090 uint32_t i; 1091 1092 if (xport) { 1093 ocs = xport->ocs; 1094 ocs_io_pool_free(xport->io_pool); 1095 ocs_node_free_pool(ocs); 1096 if(mtx_initialized(&xport->io_pending_lock.lock)) 1097 ocs_lock_free(&xport->io_pending_lock); 1098 1099 for (i = 0; i < SLI4_MAX_FCFI; i++) { 1100 ocs_lock_free(&xport->fcfi[i].pend_frames_lock); 1101 } 1102 1103 ocs_xport_rq_threads_teardown(xport); 1104 1105 ocs_free(ocs, xport, sizeof(*xport)); 1106 } 1107} 1108