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 * $FreeBSD$ 32 */ 33 34 /** 35 * @file 36 * FC transport API 37 * 38 */ 39 40 #include "ocs.h" 41 #include "ocs_device.h" 42 43 static void ocs_xport_link_stats_cb(int32_t status, uint32_t num_counters, ocs_hw_link_stat_counts_t *counters, void *arg); 44 static 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 */ 48 typedef 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 */ 65 ocs_xport_t * 66 ocs_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 */ 88 static void 89 ocs_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 */ 129 static int32_t 130 ocs_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; 170 171 ocs_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 */ 186 int32_t 187 ocs_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 rc = ocs_node_create_pool(ocs, (ocs->max_remote_nodes) ? 255 ocs->max_remote_nodes : max_remote_nodes); 256 if (rc) { 257 ocs_log_err(ocs, "Can't allocate node pool\n"); 258 goto ocs_xport_attach_cleanup; 259 } else { 260 node_pool_created = TRUE; 261 } 262 263 /* EVT: if testing chained SGLs allocate OCS_FC_MAX_SGL SGE's in the IO */ 264 xport->io_pool = ocs_io_pool_create(ocs, ocs->num_scsi_ios, 265 (ocs->ctrlmask & OCS_CTRLMASK_TEST_CHAINED_SGLS) ? OCS_FC_MAX_SGL : n_sgl); 266 if (xport->io_pool == NULL) { 267 ocs_log_err(ocs, "Can't allocate IO pool\n"); 268 goto ocs_xport_attach_cleanup; 269 } else { 270 io_pool_created = TRUE; 271 } 272 273 /* 274 * setup the RQ processing threads 275 */ 276 if (ocs_xport_rq_threads_create(xport, ocs->rq_threads) != 0) { 277 ocs_log_err(ocs, "failure creating RQ threads\n"); 278 goto ocs_xport_attach_cleanup; 279 } 280 rq_threads_created = TRUE; 281 282 return 0; 283 284 ocs_xport_attach_cleanup: 285 if (io_pool_created) { 286 ocs_io_pool_free(xport->io_pool); 287 } 288 289 if (node_pool_created) { 290 ocs_node_free_pool(ocs); 291 } 292 293 if (rq_threads_created) { 294 ocs_xport_rq_threads_teardown(xport); 295 } 296 297 return -1; 298 } 299 300 /** 301 * @brief Determines how to setup auto Xfer ready. 302 * 303 * @par Description 304 * @param xport Pointer to transport object. 305 * 306 * @return Returns 0 on success or a non-zero value on failure. 307 */ 308 static int32_t 309 ocs_xport_initialize_auto_xfer_ready(ocs_xport_t *xport) 310 { 311 ocs_t *ocs = xport->ocs; 312 uint32_t auto_xfer_rdy; 313 char prop_buf[32]; 314 uint32_t ramdisc_blocksize = 512; 315 uint8_t p_type = 0; 316 317 ocs_hw_get(&ocs->hw, OCS_HW_AUTO_XFER_RDY_CAPABLE, &auto_xfer_rdy); 318 if (!auto_xfer_rdy) { 319 ocs->auto_xfer_rdy_size = 0; 320 ocs_log_test(ocs, "Cannot enable auto xfer rdy for this port\n"); 321 return 0; 322 } 323 324 if (ocs_hw_set(&ocs->hw, OCS_HW_AUTO_XFER_RDY_SIZE, ocs->auto_xfer_rdy_size)) { 325 ocs_log_test(ocs, "%s: Can't set auto xfer rdy mode\n", ocs->desc); 326 return -1; 327 } 328 329 /* 330 * Determine if we are doing protection in the backend. We are looking 331 * at the modules parameters here. The backend cannot allow a format 332 * command to change the protection mode when using this feature, 333 * otherwise the firmware will not do the proper thing. 334 */ 335 if (ocs_get_property("p_type", prop_buf, sizeof(prop_buf)) == 0) { 336 p_type = ocs_strtoul(prop_buf, 0, 0); 337 } 338 if (ocs_get_property("ramdisc_blocksize", prop_buf, sizeof(prop_buf)) == 0) { 339 ramdisc_blocksize = ocs_strtoul(prop_buf, 0, 0); 340 } 341 if (ocs_get_property("external_dif", prop_buf, sizeof(prop_buf)) == 0) { 342 if(ocs_strlen(prop_buf)) { 343 if (p_type == 0) { 344 p_type = 1; 345 } 346 } 347 } 348 349 if (p_type != 0) { 350 if (ocs_hw_set(&ocs->hw, OCS_HW_AUTO_XFER_RDY_T10_ENABLE, TRUE)) { 351 ocs_log_test(ocs, "%s: Can't set auto xfer rdy mode\n", ocs->desc); 352 return -1; 353 } 354 if (ocs_hw_set(&ocs->hw, OCS_HW_AUTO_XFER_RDY_BLK_SIZE, ramdisc_blocksize)) { 355 ocs_log_test(ocs, "%s: Can't set auto xfer rdy blk size\n", ocs->desc); 356 return -1; 357 } 358 if (ocs_hw_set(&ocs->hw, OCS_HW_AUTO_XFER_RDY_P_TYPE, p_type)) { 359 ocs_log_test(ocs, "%s: Can't set auto xfer rdy mode\n", ocs->desc); 360 return -1; 361 } 362 if (ocs_hw_set(&ocs->hw, OCS_HW_AUTO_XFER_RDY_REF_TAG_IS_LBA, TRUE)) { 363 ocs_log_test(ocs, "%s: Can't set auto xfer rdy ref tag\n", ocs->desc); 364 return -1; 365 } 366 if (ocs_hw_set(&ocs->hw, OCS_HW_AUTO_XFER_RDY_APP_TAG_VALID, FALSE)) { 367 ocs_log_test(ocs, "%s: Can't set auto xfer rdy app tag valid\n", ocs->desc); 368 return -1; 369 } 370 } 371 ocs_log_debug(ocs, "Auto xfer rdy is enabled, p_type=%d, blksize=%d\n", 372 p_type, ramdisc_blocksize); 373 return 0; 374 } 375 376 /** 377 * @brief Initializes the device. 378 * 379 * @par Description 380 * Performs the functions required to make a device functional. 381 * 382 * @param xport Pointer to transport object. 383 * 384 * @return Returns 0 on success, or a non-zero value on failure. 385 */ 386 int32_t 387 ocs_xport_initialize(ocs_xport_t *xport) 388 { 389 ocs_t *ocs = xport->ocs; 390 int32_t rc; 391 uint32_t i; 392 uint32_t max_hw_io; 393 uint32_t max_sgl; 394 uint32_t hlm; 395 uint32_t rq_limit; 396 uint32_t dif_capable; 397 uint8_t dif_separate = 0; 398 char prop_buf[32]; 399 400 /* booleans used for cleanup if initialization fails */ 401 uint8_t ini_device_set = FALSE; 402 uint8_t tgt_device_set = FALSE; 403 uint8_t hw_initialized = FALSE; 404 405 ocs_hw_get(&ocs->hw, OCS_HW_MAX_IO, &max_hw_io); 406 if (ocs_hw_set(&ocs->hw, OCS_HW_N_IO, max_hw_io) != OCS_HW_RTN_SUCCESS) { 407 ocs_log_err(ocs, "%s: Can't set number of IOs\n", ocs->desc); 408 return -1; 409 } 410 411 ocs_hw_get(&ocs->hw, OCS_HW_MAX_SGL, &max_sgl); 412 max_sgl -= SLI4_SGE_MAX_RESERVED; 413 414 if (ocs->enable_hlm) { 415 ocs_hw_get(&ocs->hw, OCS_HW_HIGH_LOGIN_MODE, &hlm); 416 if (!hlm) { 417 ocs->enable_hlm = FALSE; 418 ocs_log_err(ocs, "Cannot enable high login mode for this port\n"); 419 } else { 420 ocs_log_debug(ocs, "High login mode is enabled\n"); 421 if (ocs_hw_set(&ocs->hw, OCS_HW_HIGH_LOGIN_MODE, TRUE)) { 422 ocs_log_err(ocs, "%s: Can't set high login mode\n", ocs->desc); 423 return -1; 424 } 425 } 426 } 427 428 /* validate the auto xfer_rdy size */ 429 if (ocs->auto_xfer_rdy_size > 0 && 430 (ocs->auto_xfer_rdy_size < 2048 || 431 ocs->auto_xfer_rdy_size > 65536)) { 432 ocs_log_err(ocs, "Auto XFER_RDY size is out of range (2K-64K)\n"); 433 return -1; 434 } 435 436 ocs_hw_get(&ocs->hw, OCS_HW_MAX_IO, &max_hw_io); 437 438 if (ocs->auto_xfer_rdy_size > 0) { 439 if (ocs_xport_initialize_auto_xfer_ready(xport)) { 440 ocs_log_err(ocs, "%s: Failed auto xfer ready setup\n", ocs->desc); 441 return -1; 442 } 443 if (ocs->esoc){ 444 ocs_hw_set(&ocs->hw, OCS_ESOC, TRUE); 445 } 446 } 447 448 if (ocs->explicit_buffer_list) { 449 /* Are pre-registered SGL's required? */ 450 ocs_hw_get(&ocs->hw, OCS_HW_PREREGISTER_SGL, &i); 451 if (i == TRUE) { 452 ocs_log_err(ocs, "Explicit Buffer List not supported on this device, not enabled\n"); 453 } else { 454 ocs_hw_set(&ocs->hw, OCS_HW_PREREGISTER_SGL, FALSE); 455 } 456 } 457 458 if (ocs_hw_set(&ocs->hw, OCS_HW_TOPOLOGY, ocs->topology) != OCS_HW_RTN_SUCCESS) { 459 ocs_log_err(ocs, "%s: Can't set the toplogy\n", ocs->desc); 460 return -1; 461 } 462 ocs_hw_set(&ocs->hw, OCS_HW_RQ_DEFAULT_BUFFER_SIZE, OCS_FC_RQ_SIZE_DEFAULT); 463 464 if (ocs_hw_set(&ocs->hw, OCS_HW_LINK_SPEED, ocs->speed) != OCS_HW_RTN_SUCCESS) { 465 ocs_log_err(ocs, "%s: Can't set the link speed\n", ocs->desc); 466 return -1; 467 } 468 469 if (ocs_hw_set(&ocs->hw, OCS_HW_ETH_LICENSE, ocs->ethernet_license) != OCS_HW_RTN_SUCCESS) { 470 ocs_log_err(ocs, "%s: Can't set the ethernet license\n", ocs->desc); 471 return -1; 472 } 473 474 /* currently only lancer support setting the CRC seed value */ 475 if (ocs->hw.sli.asic_type == SLI4_ASIC_TYPE_LANCER) { 476 if (ocs_hw_set(&ocs->hw, OCS_HW_DIF_SEED, OCS_FC_DIF_SEED) != OCS_HW_RTN_SUCCESS) { 477 ocs_log_err(ocs, "%s: Can't set the DIF seed\n", ocs->desc); 478 return -1; 479 } 480 } 481 482 /* Set the Dif mode */ 483 if (0 == ocs_hw_get(&ocs->hw, OCS_HW_DIF_CAPABLE, &dif_capable)) { 484 if (dif_capable) { 485 if (ocs_get_property("dif_separate", prop_buf, sizeof(prop_buf)) == 0) { 486 dif_separate = ocs_strtoul(prop_buf, 0, 0); 487 } 488 489 if ((rc = ocs_hw_set(&ocs->hw, OCS_HW_DIF_MODE, 490 (dif_separate == 0 ? OCS_HW_DIF_MODE_INLINE : OCS_HW_DIF_MODE_SEPARATE)))) { 491 ocs_log_err(ocs, "Requested DIF MODE not supported\n"); 492 } 493 } 494 } 495 496 if (ocs->target_io_timer_sec) { 497 ocs_log_debug(ocs, "setting target io timer=%d\n", ocs->target_io_timer_sec); 498 ocs_hw_set(&ocs->hw, OCS_HW_EMULATE_TARGET_WQE_TIMEOUT, TRUE); 499 } 500 501 ocs_hw_callback(&ocs->hw, OCS_HW_CB_DOMAIN, ocs_domain_cb, ocs); 502 ocs_hw_callback(&ocs->hw, OCS_HW_CB_REMOTE_NODE, ocs_remote_node_cb, ocs); 503 ocs_hw_callback(&ocs->hw, OCS_HW_CB_UNSOLICITED, ocs_unsolicited_cb, ocs); 504 ocs_hw_callback(&ocs->hw, OCS_HW_CB_PORT, ocs_port_cb, ocs); 505 506 ocs->fw_version = (const char*) ocs_hw_get_ptr(&ocs->hw, OCS_HW_FW_REV); 507 508 /* Initialize vport list */ 509 ocs_list_init(&xport->vport_list, ocs_vport_spec_t, link); 510 ocs_lock_init(ocs, &xport->io_pending_lock, "io_pending_lock[%d]", ocs->instance_index); 511 ocs_list_init(&xport->io_pending_list, ocs_io_t, io_pending_link); 512 ocs_atomic_init(&xport->io_active_count, 0); 513 ocs_atomic_init(&xport->io_pending_count, 0); 514 ocs_atomic_init(&xport->io_total_free, 0); 515 ocs_atomic_init(&xport->io_total_pending, 0); 516 ocs_atomic_init(&xport->io_alloc_failed_count, 0); 517 ocs_atomic_init(&xport->io_pending_recursing, 0); 518 ocs_lock_init(ocs, &ocs->hw.watchdog_lock, " Watchdog Lock[%d]", ocs_instance(ocs)); 519 rc = ocs_hw_init(&ocs->hw); 520 if (rc) { 521 ocs_log_err(ocs, "ocs_hw_init failure\n"); 522 goto ocs_xport_init_cleanup; 523 } else { 524 hw_initialized = TRUE; 525 } 526 527 rq_limit = max_hw_io/2; 528 if (ocs_hw_set(&ocs->hw, OCS_HW_RQ_PROCESS_LIMIT, rq_limit) != OCS_HW_RTN_SUCCESS) { 529 ocs_log_err(ocs, "%s: Can't set the RQ process limit\n", ocs->desc); 530 } 531 532 if (ocs->config_tgt) { 533 rc = ocs_scsi_tgt_new_device(ocs); 534 if (rc) { 535 ocs_log_err(ocs, "failed to initialize target\n"); 536 goto ocs_xport_init_cleanup; 537 } else { 538 tgt_device_set = TRUE; 539 } 540 } 541 542 if (ocs->enable_ini) { 543 rc = ocs_scsi_ini_new_device(ocs); 544 if (rc) { 545 ocs_log_err(ocs, "failed to initialize initiator\n"); 546 goto ocs_xport_init_cleanup; 547 } else { 548 ini_device_set = TRUE; 549 } 550 551 } 552 553 /* Add vports */ 554 if (ocs->num_vports != 0) { 555 556 uint32_t max_vports; 557 ocs_hw_get(&ocs->hw, OCS_HW_MAX_VPORTS, &max_vports); 558 559 if (ocs->num_vports < max_vports) { 560 ocs_log_debug(ocs, "Provisioning %d vports\n", ocs->num_vports); 561 for (i = 0; i < ocs->num_vports; i++) { 562 ocs_vport_create_spec(ocs, 0, 0, UINT32_MAX, ocs->enable_ini, ocs->enable_tgt, NULL, NULL); 563 } 564 } else { 565 ocs_log_err(ocs, "failed to create vports. num_vports range should be (1-%d) \n", max_vports-1); 566 goto ocs_xport_init_cleanup; 567 } 568 } 569 570 return 0; 571 572 ocs_xport_init_cleanup: 573 if (ini_device_set) { 574 ocs_scsi_ini_del_device(ocs); 575 } 576 577 if (tgt_device_set) { 578 ocs_scsi_tgt_del_device(ocs); 579 } 580 581 if (hw_initialized) { 582 /* ocs_hw_teardown can only execute after ocs_hw_init */ 583 ocs_hw_teardown(&ocs->hw); 584 } 585 586 return -1; 587 } 588 589 /** 590 * @brief Detaches the transport from the device. 591 * 592 * @par Description 593 * Performs the functions required to shut down a device. 594 * 595 * @param xport Pointer to transport object. 596 * 597 * @return Returns 0 on success or a non-zero value on failure. 598 */ 599 int32_t 600 ocs_xport_detach(ocs_xport_t *xport) 601 { 602 ocs_t *ocs = xport->ocs; 603 604 /* free resources associated with target-server and initiator-client */ 605 if (ocs->config_tgt) 606 ocs_scsi_tgt_del_device(ocs); 607 608 if (ocs->enable_ini) { 609 ocs_scsi_ini_del_device(ocs); 610 611 /*Shutdown FC Statistics timer*/ 612 if (ocs_timer_pending(&ocs->xport->stats_timer)) 613 ocs_del_timer(&ocs->xport->stats_timer); 614 } 615 616 ocs_hw_teardown(&ocs->hw); 617 618 return 0; 619 } 620 621 /** 622 * @brief domain list empty callback 623 * 624 * @par Description 625 * Function is invoked when the device domain list goes empty. By convention 626 * @c arg points to an ocs_sem_t instance, that is incremented. 627 * 628 * @param ocs Pointer to device object. 629 * @param arg Pointer to semaphore instance. 630 * 631 * @return None. 632 */ 633 634 static void 635 ocs_xport_domain_list_empty_cb(ocs_t *ocs, void *arg) 636 { 637 ocs_sem_t *sem = arg; 638 639 ocs_assert(ocs); 640 ocs_assert(sem); 641 642 ocs_sem_v(sem); 643 } 644 645 /** 646 * @brief post node event callback 647 * 648 * @par Description 649 * This function is called from the mailbox completion interrupt context to post an 650 * event to a node object. By doing this in the interrupt context, it has 651 * the benefit of only posting events in the interrupt context, deferring the need to 652 * create a per event node lock. 653 * 654 * @param hw Pointer to HW structure. 655 * @param status Completion status for mailbox command. 656 * @param mqe Mailbox queue completion entry. 657 * @param arg Callback argument. 658 * 659 * @return Returns 0 on success, a negative error code value on failure. 660 */ 661 662 static int32_t 663 ocs_xport_post_node_event_cb(ocs_hw_t *hw, int32_t status, uint8_t *mqe, void *arg) 664 { 665 ocs_xport_post_node_event_t *payload = arg; 666 667 if (payload != NULL) { 668 ocs_node_post_event(payload->node, payload->evt, payload->context); 669 ocs_sem_v(&payload->sem); 670 } 671 672 return 0; 673 } 674 675 /** 676 * @brief Initiate force free. 677 * 678 * @par Description 679 * Perform force free of OCS. 680 * 681 * @param xport Pointer to transport object. 682 * 683 * @return None. 684 */ 685 686 static void 687 ocs_xport_force_free(ocs_xport_t *xport) 688 { 689 ocs_t *ocs = xport->ocs; 690 ocs_domain_t *domain; 691 ocs_domain_t *next; 692 693 ocs_log_debug(ocs, "reset required, do force shutdown\n"); 694 ocs_device_lock(ocs); 695 ocs_list_foreach_safe(&ocs->domain_list, domain, next) { 696 ocs_domain_force_free(domain); 697 } 698 ocs_device_unlock(ocs); 699 } 700 701 /** 702 * @brief Perform transport attach function. 703 * 704 * @par Description 705 * Perform the attach function, which for the FC transport makes a HW call 706 * to bring up the link. 707 * 708 * @param xport pointer to transport object. 709 * @param cmd command to execute. 710 * 711 * ocs_xport_control(ocs_xport_t *xport, OCS_XPORT_PORT_ONLINE) 712 * ocs_xport_control(ocs_xport_t *xport, OCS_XPORT_PORT_OFFLINE) 713 * ocs_xport_control(ocs_xport_t *xport, OCS_XPORT_PORT_SHUTDOWN) 714 * ocs_xport_control(ocs_xport_t *xport, OCS_XPORT_POST_NODE_EVENT, ocs_node_t *node, ocs_sm_event_t, void *context) 715 * 716 * @return Returns 0 on success, or a negative error code value on failure. 717 */ 718 719 int32_t 720 ocs_xport_control(ocs_xport_t *xport, ocs_xport_ctrl_e cmd, ...) 721 { 722 uint32_t rc = 0; 723 ocs_t *ocs = NULL; 724 va_list argp; 725 726 ocs_assert(xport, -1); 727 ocs_assert(xport->ocs, -1); 728 ocs = xport->ocs; 729 730 switch (cmd) { 731 case OCS_XPORT_PORT_ONLINE: { 732 /* Bring the port on-line */ 733 rc = ocs_hw_port_control(&ocs->hw, OCS_HW_PORT_INIT, 0, NULL, NULL); 734 if (rc) { 735 ocs_log_err(ocs, "%s: Can't init port\n", ocs->desc); 736 } else { 737 xport->configured_link_state = cmd; 738 } 739 break; 740 } 741 case OCS_XPORT_PORT_OFFLINE: { 742 if (ocs_hw_port_control(&ocs->hw, OCS_HW_PORT_SHUTDOWN, 0, NULL, NULL)) { 743 ocs_log_err(ocs, "port shutdown failed\n"); 744 } else { 745 xport->configured_link_state = cmd; 746 } 747 break; 748 } 749 750 case OCS_XPORT_SHUTDOWN: { 751 ocs_sem_t sem; 752 uint32_t reset_required; 753 754 /* if a PHYSDEV reset was performed (e.g. hw dump), will affect 755 * all PCI functions; orderly shutdown won't work, just force free 756 */ 757 /* TODO: need to poll this regularly... */ 758 if (ocs_hw_get(&ocs->hw, OCS_HW_RESET_REQUIRED, &reset_required) != OCS_HW_RTN_SUCCESS) { 759 reset_required = 0; 760 } 761 762 if (reset_required) { 763 ocs_log_debug(ocs, "reset required, do force shutdown\n"); 764 ocs_xport_force_free(xport); 765 break; 766 } 767 ocs_sem_init(&sem, 0, "domain_list_sem"); 768 ocs_register_domain_list_empty_cb(ocs, ocs_xport_domain_list_empty_cb, &sem); 769 770 if (ocs_hw_port_control(&ocs->hw, OCS_HW_PORT_SHUTDOWN, 0, NULL, NULL)) { 771 ocs_log_debug(ocs, "port shutdown failed, do force shutdown\n"); 772 ocs_xport_force_free(xport); 773 } else { 774 ocs_log_debug(ocs, "Waiting %d seconds for domain shutdown.\n", (OCS_FC_DOMAIN_SHUTDOWN_TIMEOUT_USEC/1000000)); 775 776 rc = ocs_sem_p(&sem, OCS_FC_DOMAIN_SHUTDOWN_TIMEOUT_USEC); 777 if (rc) { 778 ocs_log_debug(ocs, "Note: Domain shutdown timed out\n"); 779 ocs_xport_force_free(xport); 780 } 781 } 782 783 ocs_register_domain_list_empty_cb(ocs, NULL, NULL); 784 785 /* Free up any saved virtual ports */ 786 ocs_vport_del_all(ocs); 787 break; 788 } 789 790 /* 791 * POST_NODE_EVENT: post an event to a node object 792 * 793 * This transport function is used to post an event to a node object. It does 794 * this by submitting a NOP mailbox command to defer execution to the 795 * interrupt context (thereby enforcing the serialized execution of event posting 796 * to the node state machine instances) 797 * 798 * A counting semaphore is used to make the call synchronous (we wait until 799 * the callback increments the semaphore before returning (or times out) 800 */ 801 case OCS_XPORT_POST_NODE_EVENT: { 802 ocs_node_t *node; 803 ocs_sm_event_t evt; 804 void *context; 805 ocs_xport_post_node_event_t payload; 806 ocs_t *ocs; 807 ocs_hw_t *hw; 808 809 /* Retrieve arguments */ 810 va_start(argp, cmd); 811 node = va_arg(argp, ocs_node_t*); 812 evt = va_arg(argp, ocs_sm_event_t); 813 context = va_arg(argp, void *); 814 va_end(argp); 815 816 ocs_assert(node, -1); 817 ocs_assert(node->ocs, -1); 818 819 ocs = node->ocs; 820 hw = &ocs->hw; 821 822 /* if node's state machine is disabled, don't bother continuing */ 823 if (!node->sm.current_state) { 824 ocs_log_test(ocs, "node %p state machine disabled\n", node); 825 return -1; 826 } 827 828 /* Setup payload */ 829 ocs_memset(&payload, 0, sizeof(payload)); 830 ocs_sem_init(&payload.sem, 0, "xport_post_node_Event"); 831 payload.node = node; 832 payload.evt = evt; 833 payload.context = context; 834 835 if (ocs_hw_async_call(hw, ocs_xport_post_node_event_cb, &payload)) { 836 ocs_log_test(ocs, "ocs_hw_async_call failed\n"); 837 rc = -1; 838 break; 839 } 840 841 /* Wait for completion */ 842 if (ocs_sem_p(&payload.sem, OCS_SEM_FOREVER)) { 843 ocs_log_test(ocs, "POST_NODE_EVENT: sem wait failed\n"); 844 rc = -1; 845 } 846 847 break; 848 } 849 /* 850 * Set wwnn for the port. This will be used instead of the default provided by FW. 851 */ 852 case OCS_XPORT_WWNN_SET: { 853 uint64_t wwnn; 854 855 /* Retrieve arguments */ 856 va_start(argp, cmd); 857 wwnn = va_arg(argp, uint64_t); 858 va_end(argp); 859 860 ocs_log_debug(ocs, " WWNN %016" PRIx64 "\n", wwnn); 861 xport->req_wwnn = wwnn; 862 863 break; 864 } 865 /* 866 * Set wwpn for the port. This will be used instead of the default provided by FW. 867 */ 868 case OCS_XPORT_WWPN_SET: { 869 uint64_t wwpn; 870 871 /* Retrieve arguments */ 872 va_start(argp, cmd); 873 wwpn = va_arg(argp, uint64_t); 874 va_end(argp); 875 876 ocs_log_debug(ocs, " WWPN %016" PRIx64 "\n", wwpn); 877 xport->req_wwpn = wwpn; 878 879 break; 880 } 881 882 883 default: 884 break; 885 } 886 return rc; 887 } 888 889 /** 890 * @brief Return status on a link. 891 * 892 * @par Description 893 * Returns status information about a link. 894 * 895 * @param xport Pointer to transport object. 896 * @param cmd Command to execute. 897 * @param result Pointer to result value. 898 * 899 * ocs_xport_status(ocs_xport_t *xport, OCS_XPORT_PORT_STATUS) 900 * ocs_xport_status(ocs_xport_t *xport, OCS_XPORT_LINK_SPEED, ocs_xport_stats_t *result) 901 * return link speed in MB/sec 902 * ocs_xport_status(ocs_xport_t *xport, OCS_XPORT_IS_SUPPORTED_LINK_SPEED, ocs_xport_stats_t *result) 903 * [in] *result is speed to check in MB/s 904 * returns 1 if supported, 0 if not 905 * ocs_xport_status(ocs_xport_t *xport, OCS_XPORT_LINK_STATISTICS, ocs_xport_stats_t *result) 906 * return link/host port stats 907 * ocs_xport_status(ocs_xport_t *xport, OCS_XPORT_LINK_STAT_RESET, ocs_xport_stats_t *result) 908 * resets link/host stats 909 * 910 * 911 * @return Returns 0 on success, or a negative error code value on failure. 912 */ 913 914 int32_t 915 ocs_xport_status(ocs_xport_t *xport, ocs_xport_status_e cmd, ocs_xport_stats_t *result) 916 { 917 uint32_t rc = 0; 918 ocs_t *ocs = NULL; 919 ocs_xport_stats_t value; 920 ocs_hw_rtn_e hw_rc; 921 922 ocs_assert(xport, -1); 923 ocs_assert(xport->ocs, -1); 924 925 ocs = xport->ocs; 926 927 switch (cmd) { 928 case OCS_XPORT_CONFIG_PORT_STATUS: 929 ocs_assert(result, -1); 930 if (xport->configured_link_state == 0) { 931 /* Initial state is offline. configured_link_state is */ 932 /* set to online explicitly when port is brought online. */ 933 xport->configured_link_state = OCS_XPORT_PORT_OFFLINE; 934 } 935 result->value = xport->configured_link_state; 936 break; 937 938 case OCS_XPORT_PORT_STATUS: 939 ocs_assert(result, -1); 940 /* Determine port status based on link speed. */ 941 hw_rc = ocs_hw_get(&(ocs->hw), OCS_HW_LINK_SPEED, &value.value); 942 if (hw_rc == OCS_HW_RTN_SUCCESS) { 943 if (value.value == 0) { 944 result->value = 0; 945 } else { 946 result->value = 1; 947 } 948 rc = 0; 949 } else { 950 rc = -1; 951 } 952 break; 953 954 case OCS_XPORT_LINK_SPEED: { 955 uint32_t speed; 956 957 ocs_assert(result, -1); 958 result->value = 0; 959 960 rc = ocs_hw_get(&ocs->hw, OCS_HW_LINK_SPEED, &speed); 961 if (rc == 0) { 962 result->value = speed; 963 } 964 break; 965 } 966 967 case OCS_XPORT_IS_SUPPORTED_LINK_SPEED: { 968 uint32_t speed; 969 uint32_t link_module_type; 970 971 ocs_assert(result, -1); 972 speed = result->value; 973 974 rc = ocs_hw_get(&ocs->hw, OCS_HW_LINK_MODULE_TYPE, &link_module_type); 975 if (rc == 0) { 976 switch(speed) { 977 case 1000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_1GB) != 0; break; 978 case 2000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_2GB) != 0; break; 979 case 4000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_4GB) != 0; break; 980 case 8000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_8GB) != 0; break; 981 case 10000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_10GB) != 0; break; 982 case 16000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_16GB) != 0; break; 983 case 32000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_32GB) != 0; break; 984 default: rc = 0; break; 985 } 986 } else { 987 rc = 0; 988 } 989 break; 990 } 991 case OCS_XPORT_LINK_STATISTICS: 992 ocs_device_lock(ocs); 993 ocs_memcpy((void *)result, &ocs->xport->fc_xport_stats, sizeof(ocs_xport_stats_t)); 994 ocs_device_unlock(ocs); 995 break; 996 case OCS_XPORT_LINK_STAT_RESET: { 997 /* Create a semaphore to synchronize the stat reset process. */ 998 ocs_sem_init(&(result->stats.semaphore), 0, "fc_stats_reset"); 999 1000 /* First reset the link stats */ 1001 if ((rc = ocs_hw_get_link_stats(&ocs->hw, 0, 1, 1, ocs_xport_link_stats_cb, result)) != 0) { 1002 ocs_log_err(ocs, "%s: Failed to reset link statistics\n", __func__); 1003 break; 1004 } 1005 1006 /* Wait for semaphore to be signaled when the command completes */ 1007 /* TODO: Should there be a timeout on this? If so, how long? */ 1008 if (ocs_sem_p(&(result->stats.semaphore), OCS_SEM_FOREVER) != 0) { 1009 /* Undefined failure */ 1010 ocs_log_test(ocs, "ocs_sem_p failed\n"); 1011 rc = -ENXIO; 1012 break; 1013 } 1014 1015 /* Next reset the host stats */ 1016 if ((rc = ocs_hw_get_host_stats(&ocs->hw, 1, ocs_xport_host_stats_cb, result)) != 0) { 1017 ocs_log_err(ocs, "%s: Failed to reset host statistics\n", __func__); 1018 break; 1019 } 1020 1021 /* Wait for semaphore to be signaled when the command completes */ 1022 if (ocs_sem_p(&(result->stats.semaphore), OCS_SEM_FOREVER) != 0) { 1023 /* Undefined failure */ 1024 ocs_log_test(ocs, "ocs_sem_p failed\n"); 1025 rc = -ENXIO; 1026 break; 1027 } 1028 break; 1029 } 1030 case OCS_XPORT_IS_QUIESCED: 1031 ocs_device_lock(ocs); 1032 result->value = ocs_list_empty(&ocs->domain_list); 1033 ocs_device_unlock(ocs); 1034 break; 1035 default: 1036 rc = -1; 1037 break; 1038 } 1039 1040 return rc; 1041 1042 } 1043 1044 static void 1045 ocs_xport_link_stats_cb(int32_t status, uint32_t num_counters, ocs_hw_link_stat_counts_t *counters, void *arg) 1046 { 1047 ocs_xport_stats_t *result = arg; 1048 1049 result->stats.link_stats.link_failure_error_count = counters[OCS_HW_LINK_STAT_LINK_FAILURE_COUNT].counter; 1050 result->stats.link_stats.loss_of_sync_error_count = counters[OCS_HW_LINK_STAT_LOSS_OF_SYNC_COUNT].counter; 1051 result->stats.link_stats.primitive_sequence_error_count = counters[OCS_HW_LINK_STAT_PRIMITIVE_SEQ_COUNT].counter; 1052 result->stats.link_stats.invalid_transmission_word_error_count = counters[OCS_HW_LINK_STAT_INVALID_XMIT_WORD_COUNT].counter; 1053 result->stats.link_stats.crc_error_count = counters[OCS_HW_LINK_STAT_CRC_COUNT].counter; 1054 1055 ocs_sem_v(&(result->stats.semaphore)); 1056 } 1057 1058 1059 static void 1060 ocs_xport_host_stats_cb(int32_t status, uint32_t num_counters, ocs_hw_host_stat_counts_t *counters, void *arg) 1061 { 1062 ocs_xport_stats_t *result = arg; 1063 1064 result->stats.host_stats.transmit_kbyte_count = counters[OCS_HW_HOST_STAT_TX_KBYTE_COUNT].counter; 1065 result->stats.host_stats.receive_kbyte_count = counters[OCS_HW_HOST_STAT_RX_KBYTE_COUNT].counter; 1066 result->stats.host_stats.transmit_frame_count = counters[OCS_HW_HOST_STAT_TX_FRAME_COUNT].counter; 1067 result->stats.host_stats.receive_frame_count = counters[OCS_HW_HOST_STAT_RX_FRAME_COUNT].counter; 1068 1069 ocs_sem_v(&(result->stats.semaphore)); 1070 } 1071 1072 1073 /** 1074 * @brief Free a transport object. 1075 * 1076 * @par Description 1077 * The transport object is freed. 1078 * 1079 * @param xport Pointer to transport object. 1080 * 1081 * @return None. 1082 */ 1083 1084 void 1085 ocs_xport_free(ocs_xport_t *xport) 1086 { 1087 ocs_t *ocs; 1088 uint32_t i; 1089 1090 if (xport) { 1091 ocs = xport->ocs; 1092 ocs_io_pool_free(xport->io_pool); 1093 ocs_node_free_pool(ocs); 1094 if(mtx_initialized(&xport->io_pending_lock.lock)) 1095 ocs_lock_free(&xport->io_pending_lock); 1096 1097 for (i = 0; i < SLI4_MAX_FCFI; i++) { 1098 ocs_lock_free(&xport->fcfi[i].pend_frames_lock); 1099 } 1100 1101 ocs_xport_rq_threads_teardown(xport); 1102 1103 ocs_free(ocs, xport, sizeof(*xport)); 1104 } 1105 } 1106