1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * QLogic FCoE Offload Driver 4 * Copyright (c) 2016-2018 Cavium Inc. 5 */ 6 #include <linux/init.h> 7 #include <linux/kernel.h> 8 #include <linux/module.h> 9 #include <linux/pci.h> 10 #include <linux/device.h> 11 #include <linux/highmem.h> 12 #include <linux/crc32.h> 13 #include <linux/interrupt.h> 14 #include <linux/list.h> 15 #include <linux/kthread.h> 16 #include <scsi/libfc.h> 17 #include <scsi/scsi_host.h> 18 #include <scsi/fc_frame.h> 19 #include <linux/if_ether.h> 20 #include <linux/if_vlan.h> 21 #include <linux/cpu.h> 22 #include "qedf.h" 23 #include "qedf_dbg.h" 24 #include <uapi/linux/pci_regs.h> 25 26 const struct qed_fcoe_ops *qed_ops; 27 28 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id); 29 static void qedf_remove(struct pci_dev *pdev); 30 31 /* 32 * Driver module parameters. 33 */ 34 static unsigned int qedf_dev_loss_tmo = 60; 35 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO); 36 MODULE_PARM_DESC(dev_loss_tmo, " dev_loss_tmo setting for attached " 37 "remote ports (default 60)"); 38 39 uint qedf_debug = QEDF_LOG_INFO; 40 module_param_named(debug, qedf_debug, uint, S_IRUGO); 41 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging" 42 " mask"); 43 44 static uint qedf_fipvlan_retries = 60; 45 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO); 46 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt " 47 "before giving up (default 60)"); 48 49 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN; 50 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO); 51 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails " 52 "(default 1002)."); 53 54 static int qedf_default_prio = -1; 55 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO); 56 MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE" 57 " traffic (value between 0 and 7, default 3)."); 58 59 uint qedf_dump_frames; 60 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR); 61 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames " 62 "(default off)"); 63 64 static uint qedf_queue_depth; 65 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO); 66 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered " 67 "by the qedf driver. Default is 0 (use OS default)."); 68 69 uint qedf_io_tracing; 70 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR); 71 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions " 72 "into trace buffer. (default off)."); 73 74 static uint qedf_max_lun = MAX_FIBRE_LUNS; 75 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO); 76 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver " 77 "supports. (default 0xffffffff)"); 78 79 uint qedf_link_down_tmo; 80 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO); 81 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the " 82 "link is down by N seconds."); 83 84 bool qedf_retry_delay; 85 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR); 86 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry " 87 "delay handling (default off)."); 88 89 static bool qedf_dcbx_no_wait; 90 module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR); 91 MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start " 92 "sending FIP VLAN requests on link up (Default: off)."); 93 94 static uint qedf_dp_module; 95 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO); 96 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed " 97 "qed module during probe."); 98 99 static uint qedf_dp_level = QED_LEVEL_NOTICE; 100 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO); 101 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module " 102 "during probe (0-3: 0 more verbose)."); 103 104 struct workqueue_struct *qedf_io_wq; 105 106 static struct fcoe_percpu_s qedf_global; 107 static DEFINE_SPINLOCK(qedf_global_lock); 108 109 static struct kmem_cache *qedf_io_work_cache; 110 111 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id) 112 { 113 qedf->vlan_id = vlan_id; 114 qedf->vlan_id |= qedf->prio << VLAN_PRIO_SHIFT; 115 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Setting vlan_id=%04x " 116 "prio=%d.\n", vlan_id, qedf->prio); 117 } 118 119 /* Returns true if we have a valid vlan, false otherwise */ 120 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf) 121 { 122 int rc; 123 124 while (qedf->fipvlan_retries--) { 125 /* This is to catch if link goes down during fipvlan retries */ 126 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 127 QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n"); 128 return false; 129 } 130 131 if (qedf->vlan_id > 0) 132 return true; 133 134 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 135 "Retry %d.\n", qedf->fipvlan_retries); 136 init_completion(&qedf->fipvlan_compl); 137 qedf_fcoe_send_vlan_req(qedf); 138 rc = wait_for_completion_timeout(&qedf->fipvlan_compl, 139 1 * HZ); 140 if (rc > 0 && 141 (atomic_read(&qedf->link_state) == QEDF_LINK_UP)) { 142 fcoe_ctlr_link_up(&qedf->ctlr); 143 return true; 144 } 145 } 146 147 return false; 148 } 149 150 static void qedf_handle_link_update(struct work_struct *work) 151 { 152 struct qedf_ctx *qedf = 153 container_of(work, struct qedf_ctx, link_update.work); 154 int rc; 155 156 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n", 157 atomic_read(&qedf->link_state)); 158 159 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 160 rc = qedf_initiate_fipvlan_req(qedf); 161 if (rc) 162 return; 163 164 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 165 qedf->vlan_id = 0; 166 return; 167 } 168 169 /* 170 * If we get here then we never received a repsonse to our 171 * fip vlan request so set the vlan_id to the default and 172 * tell FCoE that the link is up 173 */ 174 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN " 175 "response, falling back to default VLAN %d.\n", 176 qedf_fallback_vlan); 177 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 178 179 /* 180 * Zero out data_src_addr so we'll update it with the new 181 * lport port_id 182 */ 183 eth_zero_addr(qedf->data_src_addr); 184 fcoe_ctlr_link_up(&qedf->ctlr); 185 } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 186 /* 187 * If we hit here and link_down_tmo_valid is still 1 it means 188 * that link_down_tmo timed out so set it to 0 to make sure any 189 * other readers have accurate state. 190 */ 191 atomic_set(&qedf->link_down_tmo_valid, 0); 192 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 193 "Calling fcoe_ctlr_link_down().\n"); 194 fcoe_ctlr_link_down(&qedf->ctlr); 195 if (qedf_wait_for_upload(qedf) == false) 196 QEDF_ERR(&qedf->dbg_ctx, 197 "Could not upload all sessions.\n"); 198 /* Reset the number of FIP VLAN retries */ 199 qedf->fipvlan_retries = qedf_fipvlan_retries; 200 } 201 } 202 203 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1 204 #define QEDF_FCOE_MAC_METHOD_FCF_MAP 2 205 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3 206 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp) 207 { 208 u8 *granted_mac; 209 struct fc_frame_header *fh = fc_frame_header_get(fp); 210 u8 fc_map[3]; 211 int method = 0; 212 213 /* Get granted MAC address from FIP FLOGI payload */ 214 granted_mac = fr_cb(fp)->granted_mac; 215 216 /* 217 * We set the source MAC for FCoE traffic based on the Granted MAC 218 * address from the switch. 219 * 220 * If granted_mac is non-zero, we used that. 221 * If the granted_mac is zeroed out, created the FCoE MAC based on 222 * the sel_fcf->fc_map and the d_id fo the FLOGI frame. 223 * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the 224 * d_id of the FLOGI frame. 225 */ 226 if (!is_zero_ether_addr(granted_mac)) { 227 ether_addr_copy(qedf->data_src_addr, granted_mac); 228 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC; 229 } else if (qedf->ctlr.sel_fcf->fc_map != 0) { 230 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map); 231 qedf->data_src_addr[0] = fc_map[0]; 232 qedf->data_src_addr[1] = fc_map[1]; 233 qedf->data_src_addr[2] = fc_map[2]; 234 qedf->data_src_addr[3] = fh->fh_d_id[0]; 235 qedf->data_src_addr[4] = fh->fh_d_id[1]; 236 qedf->data_src_addr[5] = fh->fh_d_id[2]; 237 method = QEDF_FCOE_MAC_METHOD_FCF_MAP; 238 } else { 239 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id); 240 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC; 241 } 242 243 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 244 "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method); 245 } 246 247 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp, 248 void *arg) 249 { 250 struct fc_exch *exch = fc_seq_exch(seq); 251 struct fc_lport *lport = exch->lp; 252 struct qedf_ctx *qedf = lport_priv(lport); 253 254 if (!qedf) { 255 QEDF_ERR(NULL, "qedf is NULL.\n"); 256 return; 257 } 258 259 /* 260 * If ERR_PTR is set then don't try to stat anything as it will cause 261 * a crash when we access fp. 262 */ 263 if (IS_ERR(fp)) { 264 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 265 "fp has IS_ERR() set.\n"); 266 goto skip_stat; 267 } 268 269 /* Log stats for FLOGI reject */ 270 if (fc_frame_payload_op(fp) == ELS_LS_RJT) 271 qedf->flogi_failed++; 272 else if (fc_frame_payload_op(fp) == ELS_LS_ACC) { 273 /* Set the source MAC we will use for FCoE traffic */ 274 qedf_set_data_src_addr(qedf, fp); 275 } 276 277 /* Complete flogi_compl so we can proceed to sending ADISCs */ 278 complete(&qedf->flogi_compl); 279 280 skip_stat: 281 /* Report response to libfc */ 282 fc_lport_flogi_resp(seq, fp, lport); 283 } 284 285 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did, 286 struct fc_frame *fp, unsigned int op, 287 void (*resp)(struct fc_seq *, 288 struct fc_frame *, 289 void *), 290 void *arg, u32 timeout) 291 { 292 struct qedf_ctx *qedf = lport_priv(lport); 293 294 /* 295 * Intercept FLOGI for statistic purposes. Note we use the resp 296 * callback to tell if this is really a flogi. 297 */ 298 if (resp == fc_lport_flogi_resp) { 299 qedf->flogi_cnt++; 300 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp, 301 arg, timeout); 302 } 303 304 return fc_elsct_send(lport, did, fp, op, resp, arg, timeout); 305 } 306 307 int qedf_send_flogi(struct qedf_ctx *qedf) 308 { 309 struct fc_lport *lport; 310 struct fc_frame *fp; 311 312 lport = qedf->lport; 313 314 if (!lport->tt.elsct_send) 315 return -EINVAL; 316 317 fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); 318 if (!fp) { 319 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n"); 320 return -ENOMEM; 321 } 322 323 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 324 "Sending FLOGI to reestablish session with switch.\n"); 325 lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, 326 ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov); 327 328 init_completion(&qedf->flogi_compl); 329 330 return 0; 331 } 332 333 struct qedf_tmp_rdata_item { 334 struct fc_rport_priv *rdata; 335 struct list_head list; 336 }; 337 338 /* 339 * This function is called if link_down_tmo is in use. If we get a link up and 340 * link_down_tmo has not expired then use just FLOGI/ADISC to recover our 341 * sessions with targets. Otherwise, just call fcoe_ctlr_link_up(). 342 */ 343 static void qedf_link_recovery(struct work_struct *work) 344 { 345 struct qedf_ctx *qedf = 346 container_of(work, struct qedf_ctx, link_recovery.work); 347 struct qedf_rport *fcport; 348 struct fc_rport_priv *rdata; 349 struct qedf_tmp_rdata_item *rdata_item, *tmp_rdata_item; 350 bool rc; 351 int retries = 30; 352 int rval, i; 353 struct list_head rdata_login_list; 354 355 INIT_LIST_HEAD(&rdata_login_list); 356 357 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 358 "Link down tmo did not expire.\n"); 359 360 /* 361 * Essentially reset the fcoe_ctlr here without affecting the state 362 * of the libfc structs. 363 */ 364 qedf->ctlr.state = FIP_ST_LINK_WAIT; 365 fcoe_ctlr_link_down(&qedf->ctlr); 366 367 /* 368 * Bring the link up before we send the fipvlan request so libfcoe 369 * can select a new fcf in parallel 370 */ 371 fcoe_ctlr_link_up(&qedf->ctlr); 372 373 /* Since the link when down and up to verify which vlan we're on */ 374 qedf->fipvlan_retries = qedf_fipvlan_retries; 375 rc = qedf_initiate_fipvlan_req(qedf); 376 /* If getting the VLAN fails, set the VLAN to the fallback one */ 377 if (!rc) 378 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 379 380 /* 381 * We need to wait for an FCF to be selected due to the 382 * fcoe_ctlr_link_up other the FLOGI will be rejected. 383 */ 384 while (retries > 0) { 385 if (qedf->ctlr.sel_fcf) { 386 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 387 "FCF reselected, proceeding with FLOGI.\n"); 388 break; 389 } 390 msleep(500); 391 retries--; 392 } 393 394 if (retries < 1) { 395 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for " 396 "FCF selection.\n"); 397 return; 398 } 399 400 rval = qedf_send_flogi(qedf); 401 if (rval) 402 return; 403 404 /* Wait for FLOGI completion before proceeding with sending ADISCs */ 405 i = wait_for_completion_timeout(&qedf->flogi_compl, 406 qedf->lport->r_a_tov); 407 if (i == 0) { 408 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n"); 409 return; 410 } 411 412 /* 413 * Call lport->tt.rport_login which will cause libfc to send an 414 * ADISC since the rport is in state ready. 415 */ 416 rcu_read_lock(); 417 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 418 rdata = fcport->rdata; 419 if (rdata == NULL) 420 continue; 421 rdata_item = kzalloc(sizeof(struct qedf_tmp_rdata_item), 422 GFP_ATOMIC); 423 if (!rdata_item) 424 continue; 425 if (kref_get_unless_zero(&rdata->kref)) { 426 rdata_item->rdata = rdata; 427 list_add(&rdata_item->list, &rdata_login_list); 428 } else 429 kfree(rdata_item); 430 } 431 rcu_read_unlock(); 432 /* 433 * Do the fc_rport_login outside of the rcu lock so we don't take a 434 * mutex in an atomic context. 435 */ 436 list_for_each_entry_safe(rdata_item, tmp_rdata_item, &rdata_login_list, 437 list) { 438 list_del(&rdata_item->list); 439 fc_rport_login(rdata_item->rdata); 440 kref_put(&rdata_item->rdata->kref, fc_rport_destroy); 441 kfree(rdata_item); 442 } 443 } 444 445 static void qedf_update_link_speed(struct qedf_ctx *qedf, 446 struct qed_link_output *link) 447 { 448 struct fc_lport *lport = qedf->lport; 449 450 lport->link_speed = FC_PORTSPEED_UNKNOWN; 451 lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN; 452 453 /* Set fc_host link speed */ 454 switch (link->speed) { 455 case 10000: 456 lport->link_speed = FC_PORTSPEED_10GBIT; 457 break; 458 case 25000: 459 lport->link_speed = FC_PORTSPEED_25GBIT; 460 break; 461 case 40000: 462 lport->link_speed = FC_PORTSPEED_40GBIT; 463 break; 464 case 50000: 465 lport->link_speed = FC_PORTSPEED_50GBIT; 466 break; 467 case 100000: 468 lport->link_speed = FC_PORTSPEED_100GBIT; 469 break; 470 default: 471 lport->link_speed = FC_PORTSPEED_UNKNOWN; 472 break; 473 } 474 475 /* 476 * Set supported link speed by querying the supported 477 * capabilities of the link. 478 */ 479 if (link->supported_caps & SUPPORTED_10000baseKR_Full) 480 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT; 481 if (link->supported_caps & SUPPORTED_25000baseKR_Full) 482 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT; 483 if (link->supported_caps & SUPPORTED_40000baseLR4_Full) 484 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT; 485 if (link->supported_caps & SUPPORTED_50000baseKR2_Full) 486 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT; 487 if (link->supported_caps & SUPPORTED_100000baseKR4_Full) 488 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT; 489 fc_host_supported_speeds(lport->host) = lport->link_supported_speeds; 490 } 491 492 static void qedf_link_update(void *dev, struct qed_link_output *link) 493 { 494 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 495 496 if (link->link_up) { 497 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 498 QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC, 499 "Ignoring link up event as link is already up.\n"); 500 return; 501 } 502 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n", 503 link->speed / 1000); 504 505 /* Cancel any pending link down work */ 506 cancel_delayed_work(&qedf->link_update); 507 508 atomic_set(&qedf->link_state, QEDF_LINK_UP); 509 qedf_update_link_speed(qedf, link); 510 511 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE || 512 qedf_dcbx_no_wait) { 513 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 514 "DCBx done.\n"); 515 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 516 queue_delayed_work(qedf->link_update_wq, 517 &qedf->link_recovery, 0); 518 else 519 queue_delayed_work(qedf->link_update_wq, 520 &qedf->link_update, 0); 521 atomic_set(&qedf->link_down_tmo_valid, 0); 522 } 523 524 } else { 525 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n"); 526 527 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 528 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 529 /* 530 * Flag that we're waiting for the link to come back up before 531 * informing the fcoe layer of the event. 532 */ 533 if (qedf_link_down_tmo > 0) { 534 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 535 "Starting link down tmo.\n"); 536 atomic_set(&qedf->link_down_tmo_valid, 1); 537 } 538 qedf->vlan_id = 0; 539 qedf_update_link_speed(qedf, link); 540 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 541 qedf_link_down_tmo * HZ); 542 } 543 } 544 545 546 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type) 547 { 548 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 549 u8 tmp_prio; 550 551 QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe " 552 "prio=%d.\n", get->operational.valid, get->operational.enabled, 553 get->operational.app_prio.fcoe); 554 555 if (get->operational.enabled && get->operational.valid) { 556 /* If DCBX was already negotiated on link up then just exit */ 557 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) { 558 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 559 "DCBX already set on link up.\n"); 560 return; 561 } 562 563 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE); 564 565 /* 566 * Set the 8021q priority in the following manner: 567 * 568 * 1. If a modparam is set use that 569 * 2. If the value is not between 0..7 use the default 570 * 3. Use the priority we get from the DCBX app tag 571 */ 572 tmp_prio = get->operational.app_prio.fcoe; 573 if (qedf_default_prio > -1) 574 qedf->prio = qedf_default_prio; 575 else if (tmp_prio < 0 || tmp_prio > 7) { 576 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 577 "FIP/FCoE prio %d out of range, setting to %d.\n", 578 tmp_prio, QEDF_DEFAULT_PRIO); 579 qedf->prio = QEDF_DEFAULT_PRIO; 580 } else 581 qedf->prio = tmp_prio; 582 583 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP && 584 !qedf_dcbx_no_wait) { 585 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 586 queue_delayed_work(qedf->link_update_wq, 587 &qedf->link_recovery, 0); 588 else 589 queue_delayed_work(qedf->link_update_wq, 590 &qedf->link_update, 0); 591 atomic_set(&qedf->link_down_tmo_valid, 0); 592 } 593 } 594 595 } 596 597 static u32 qedf_get_login_failures(void *cookie) 598 { 599 struct qedf_ctx *qedf; 600 601 qedf = (struct qedf_ctx *)cookie; 602 return qedf->flogi_failed; 603 } 604 605 static struct qed_fcoe_cb_ops qedf_cb_ops = { 606 { 607 .link_update = qedf_link_update, 608 .dcbx_aen = qedf_dcbx_handler, 609 .get_generic_tlv_data = qedf_get_generic_tlv_data, 610 .get_protocol_tlv_data = qedf_get_protocol_tlv_data, 611 } 612 }; 613 614 /* 615 * Various transport templates. 616 */ 617 618 static struct scsi_transport_template *qedf_fc_transport_template; 619 static struct scsi_transport_template *qedf_fc_vport_transport_template; 620 621 /* 622 * SCSI EH handlers 623 */ 624 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd) 625 { 626 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); 627 struct fc_lport *lport; 628 struct qedf_ctx *qedf; 629 struct qedf_ioreq *io_req; 630 struct fc_rport_libfc_priv *rp = rport->dd_data; 631 struct fc_rport_priv *rdata; 632 struct qedf_rport *fcport = NULL; 633 int rc = FAILED; 634 int wait_count = 100; 635 int refcount = 0; 636 int rval; 637 int got_ref = 0; 638 639 lport = shost_priv(sc_cmd->device->host); 640 qedf = (struct qedf_ctx *)lport_priv(lport); 641 642 /* rport and tgt are allocated together, so tgt should be non-NULL */ 643 fcport = (struct qedf_rport *)&rp[1]; 644 rdata = fcport->rdata; 645 if (!rdata || !kref_get_unless_zero(&rdata->kref)) { 646 QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd); 647 rc = 1; 648 goto out; 649 } 650 651 652 io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr; 653 if (!io_req) { 654 QEDF_ERR(&qedf->dbg_ctx, 655 "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n", 656 sc_cmd, sc_cmd->cmnd[0], 657 rdata->ids.port_id); 658 rc = SUCCESS; 659 goto drop_rdata_kref; 660 } 661 662 rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */ 663 if (rval) 664 got_ref = 1; 665 666 /* If we got a valid io_req, confirm it belongs to this sc_cmd. */ 667 if (!rval || io_req->sc_cmd != sc_cmd) { 668 QEDF_ERR(&qedf->dbg_ctx, 669 "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n", 670 io_req->sc_cmd, sc_cmd, rdata->ids.port_id); 671 672 goto drop_rdata_kref; 673 } 674 675 if (fc_remote_port_chkready(rport)) { 676 refcount = kref_read(&io_req->refcount); 677 QEDF_ERR(&qedf->dbg_ctx, 678 "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n", 679 io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0], 680 refcount, rdata->ids.port_id); 681 682 goto drop_rdata_kref; 683 } 684 685 rc = fc_block_scsi_eh(sc_cmd); 686 if (rc) 687 goto drop_rdata_kref; 688 689 if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) { 690 QEDF_ERR(&qedf->dbg_ctx, 691 "Connection uploading, xid=0x%x., port_id=%06x\n", 692 io_req->xid, rdata->ids.port_id); 693 while (io_req->sc_cmd && (wait_count != 0)) { 694 msleep(100); 695 wait_count--; 696 } 697 if (wait_count) { 698 QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n"); 699 rc = SUCCESS; 700 } else { 701 QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n"); 702 rc = FAILED; 703 } 704 goto drop_rdata_kref; 705 } 706 707 if (lport->state != LPORT_ST_READY || !(lport->link_up)) { 708 QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n"); 709 goto drop_rdata_kref; 710 } 711 712 QEDF_ERR(&qedf->dbg_ctx, 713 "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n", 714 io_req, sc_cmd, io_req->xid, io_req->fp_idx, 715 rdata->ids.port_id); 716 717 if (qedf->stop_io_on_error) { 718 qedf_stop_all_io(qedf); 719 rc = SUCCESS; 720 goto drop_rdata_kref; 721 } 722 723 init_completion(&io_req->abts_done); 724 rval = qedf_initiate_abts(io_req, true); 725 if (rval) { 726 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n"); 727 /* 728 * If we fail to queue the ABTS then return this command to 729 * the SCSI layer as it will own and free the xid 730 */ 731 rc = SUCCESS; 732 qedf_scsi_done(qedf, io_req, DID_ERROR); 733 goto drop_rdata_kref; 734 } 735 736 wait_for_completion(&io_req->abts_done); 737 738 if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS || 739 io_req->event == QEDF_IOREQ_EV_ABORT_FAILED || 740 io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) { 741 /* 742 * If we get a reponse to the abort this is success from 743 * the perspective that all references to the command have 744 * been removed from the driver and firmware 745 */ 746 rc = SUCCESS; 747 } else { 748 /* If the abort and cleanup failed then return a failure */ 749 rc = FAILED; 750 } 751 752 if (rc == SUCCESS) 753 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n", 754 io_req->xid); 755 else 756 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n", 757 io_req->xid); 758 759 drop_rdata_kref: 760 kref_put(&rdata->kref, fc_rport_destroy); 761 out: 762 if (got_ref) 763 kref_put(&io_req->refcount, qedf_release_cmd); 764 return rc; 765 } 766 767 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd) 768 { 769 QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...", 770 sc_cmd->device->host->host_no, sc_cmd->device->id, 771 sc_cmd->device->lun); 772 return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET); 773 } 774 775 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd) 776 { 777 QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ", 778 sc_cmd->device->host->host_no, sc_cmd->device->id, 779 sc_cmd->device->lun); 780 return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET); 781 } 782 783 bool qedf_wait_for_upload(struct qedf_ctx *qedf) 784 { 785 struct qedf_rport *fcport = NULL; 786 int wait_cnt = 120; 787 788 while (wait_cnt--) { 789 if (atomic_read(&qedf->num_offloads)) 790 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 791 "Waiting for all uploads to complete num_offloads = 0x%x.\n", 792 atomic_read(&qedf->num_offloads)); 793 else 794 return true; 795 msleep(500); 796 } 797 798 rcu_read_lock(); 799 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 800 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, 801 &fcport->flags)) { 802 if (fcport->rdata) 803 QEDF_ERR(&qedf->dbg_ctx, 804 "Waiting for fcport %p portid=%06x.\n", 805 fcport, fcport->rdata->ids.port_id); 806 } else { 807 QEDF_ERR(&qedf->dbg_ctx, 808 "Waiting for fcport %p.\n", fcport); 809 } 810 } 811 rcu_read_unlock(); 812 return false; 813 814 } 815 816 /* Performs soft reset of qedf_ctx by simulating a link down/up */ 817 void qedf_ctx_soft_reset(struct fc_lport *lport) 818 { 819 struct qedf_ctx *qedf; 820 struct qed_link_output if_link; 821 822 if (lport->vport) { 823 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n"); 824 return; 825 } 826 827 qedf = lport_priv(lport); 828 829 /* For host reset, essentially do a soft link up/down */ 830 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 831 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 832 "Queuing link down work.\n"); 833 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 834 0); 835 836 if (qedf_wait_for_upload(qedf) == false) { 837 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 838 WARN_ON(atomic_read(&qedf->num_offloads)); 839 } 840 841 /* Before setting link up query physical link state */ 842 qed_ops->common->get_link(qedf->cdev, &if_link); 843 /* Bail if the physical link is not up */ 844 if (!if_link.link_up) { 845 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 846 "Physical link is not up.\n"); 847 return; 848 } 849 /* Flush and wait to make sure link down is processed */ 850 flush_delayed_work(&qedf->link_update); 851 msleep(500); 852 853 atomic_set(&qedf->link_state, QEDF_LINK_UP); 854 qedf->vlan_id = 0; 855 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 856 "Queue link up work.\n"); 857 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 858 0); 859 } 860 861 /* Reset the host by gracefully logging out and then logging back in */ 862 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd) 863 { 864 struct fc_lport *lport; 865 struct qedf_ctx *qedf; 866 867 lport = shost_priv(sc_cmd->device->host); 868 qedf = lport_priv(lport); 869 870 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN || 871 test_bit(QEDF_UNLOADING, &qedf->flags)) 872 return FAILED; 873 874 QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued..."); 875 876 qedf_ctx_soft_reset(lport); 877 878 return SUCCESS; 879 } 880 881 static int qedf_slave_configure(struct scsi_device *sdev) 882 { 883 if (qedf_queue_depth) { 884 scsi_change_queue_depth(sdev, qedf_queue_depth); 885 } 886 887 return 0; 888 } 889 890 static struct scsi_host_template qedf_host_template = { 891 .module = THIS_MODULE, 892 .name = QEDF_MODULE_NAME, 893 .this_id = -1, 894 .cmd_per_lun = 32, 895 .max_sectors = 0xffff, 896 .queuecommand = qedf_queuecommand, 897 .shost_attrs = qedf_host_attrs, 898 .eh_abort_handler = qedf_eh_abort, 899 .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */ 900 .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */ 901 .eh_host_reset_handler = qedf_eh_host_reset, 902 .slave_configure = qedf_slave_configure, 903 .dma_boundary = QED_HW_DMA_BOUNDARY, 904 .sg_tablesize = QEDF_MAX_BDS_PER_CMD, 905 .can_queue = FCOE_PARAMS_NUM_TASKS, 906 .change_queue_depth = scsi_change_queue_depth, 907 }; 908 909 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen) 910 { 911 int rc; 912 913 spin_lock(&qedf_global_lock); 914 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global); 915 spin_unlock(&qedf_global_lock); 916 917 return rc; 918 } 919 920 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id) 921 { 922 struct qedf_rport *fcport; 923 struct fc_rport_priv *rdata; 924 925 rcu_read_lock(); 926 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 927 rdata = fcport->rdata; 928 if (rdata == NULL) 929 continue; 930 if (rdata->ids.port_id == port_id) { 931 rcu_read_unlock(); 932 return fcport; 933 } 934 } 935 rcu_read_unlock(); 936 937 /* Return NULL to caller to let them know fcport was not found */ 938 return NULL; 939 } 940 941 /* Transmits an ELS frame over an offloaded session */ 942 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp) 943 { 944 struct fc_frame_header *fh; 945 int rc = 0; 946 947 fh = fc_frame_header_get(fp); 948 if ((fh->fh_type == FC_TYPE_ELS) && 949 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 950 switch (fc_frame_payload_op(fp)) { 951 case ELS_ADISC: 952 qedf_send_adisc(fcport, fp); 953 rc = 1; 954 break; 955 } 956 } 957 958 return rc; 959 } 960 961 /** 962 * qedf_xmit - qedf FCoE frame transmit function 963 * 964 */ 965 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp) 966 { 967 struct fc_lport *base_lport; 968 struct qedf_ctx *qedf; 969 struct ethhdr *eh; 970 struct fcoe_crc_eof *cp; 971 struct sk_buff *skb; 972 struct fc_frame_header *fh; 973 struct fcoe_hdr *hp; 974 u8 sof, eof; 975 u32 crc; 976 unsigned int hlen, tlen, elen; 977 int wlen; 978 struct fc_stats *stats; 979 struct fc_lport *tmp_lport; 980 struct fc_lport *vn_port = NULL; 981 struct qedf_rport *fcport; 982 int rc; 983 u16 vlan_tci = 0; 984 985 qedf = (struct qedf_ctx *)lport_priv(lport); 986 987 fh = fc_frame_header_get(fp); 988 skb = fp_skb(fp); 989 990 /* Filter out traffic to other NPIV ports on the same host */ 991 if (lport->vport) 992 base_lport = shost_priv(vport_to_shost(lport->vport)); 993 else 994 base_lport = lport; 995 996 /* Flag if the destination is the base port */ 997 if (base_lport->port_id == ntoh24(fh->fh_d_id)) { 998 vn_port = base_lport; 999 } else { 1000 /* Got through the list of vports attached to the base_lport 1001 * and see if we have a match with the destination address. 1002 */ 1003 list_for_each_entry(tmp_lport, &base_lport->vports, list) { 1004 if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) { 1005 vn_port = tmp_lport; 1006 break; 1007 } 1008 } 1009 } 1010 if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) { 1011 struct fc_rport_priv *rdata = NULL; 1012 1013 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 1014 "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id)); 1015 kfree_skb(skb); 1016 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id)); 1017 if (rdata) { 1018 rdata->retries = lport->max_rport_retry_count; 1019 kref_put(&rdata->kref, fc_rport_destroy); 1020 } 1021 return -EINVAL; 1022 } 1023 /* End NPIV filtering */ 1024 1025 if (!qedf->ctlr.sel_fcf) { 1026 kfree_skb(skb); 1027 return 0; 1028 } 1029 1030 if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) { 1031 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n"); 1032 kfree_skb(skb); 1033 return 0; 1034 } 1035 1036 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 1037 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n"); 1038 kfree_skb(skb); 1039 return 0; 1040 } 1041 1042 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 1043 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb)) 1044 return 0; 1045 } 1046 1047 /* Check to see if this needs to be sent on an offloaded session */ 1048 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 1049 1050 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1051 rc = qedf_xmit_l2_frame(fcport, fp); 1052 /* 1053 * If the frame was successfully sent over the middle path 1054 * then do not try to also send it over the LL2 path 1055 */ 1056 if (rc) 1057 return 0; 1058 } 1059 1060 sof = fr_sof(fp); 1061 eof = fr_eof(fp); 1062 1063 elen = sizeof(struct ethhdr); 1064 hlen = sizeof(struct fcoe_hdr); 1065 tlen = sizeof(struct fcoe_crc_eof); 1066 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; 1067 1068 skb->ip_summed = CHECKSUM_NONE; 1069 crc = fcoe_fc_crc(fp); 1070 1071 /* copy port crc and eof to the skb buff */ 1072 if (skb_is_nonlinear(skb)) { 1073 skb_frag_t *frag; 1074 1075 if (qedf_get_paged_crc_eof(skb, tlen)) { 1076 kfree_skb(skb); 1077 return -ENOMEM; 1078 } 1079 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; 1080 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset; 1081 } else { 1082 cp = skb_put(skb, tlen); 1083 } 1084 1085 memset(cp, 0, sizeof(*cp)); 1086 cp->fcoe_eof = eof; 1087 cp->fcoe_crc32 = cpu_to_le32(~crc); 1088 if (skb_is_nonlinear(skb)) { 1089 kunmap_atomic(cp); 1090 cp = NULL; 1091 } 1092 1093 1094 /* adjust skb network/transport offsets to match mac/fcoe/port */ 1095 skb_push(skb, elen + hlen); 1096 skb_reset_mac_header(skb); 1097 skb_reset_network_header(skb); 1098 skb->mac_len = elen; 1099 skb->protocol = htons(ETH_P_FCOE); 1100 1101 /* 1102 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN 1103 * for FIP/FCoE traffic. 1104 */ 1105 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id); 1106 1107 /* fill up mac and fcoe headers */ 1108 eh = eth_hdr(skb); 1109 eh->h_proto = htons(ETH_P_FCOE); 1110 if (qedf->ctlr.map_dest) 1111 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); 1112 else 1113 /* insert GW address */ 1114 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr); 1115 1116 /* Set the source MAC address */ 1117 ether_addr_copy(eh->h_source, qedf->data_src_addr); 1118 1119 hp = (struct fcoe_hdr *)(eh + 1); 1120 memset(hp, 0, sizeof(*hp)); 1121 if (FC_FCOE_VER) 1122 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); 1123 hp->fcoe_sof = sof; 1124 1125 /*update tx stats */ 1126 stats = per_cpu_ptr(lport->stats, get_cpu()); 1127 stats->TxFrames++; 1128 stats->TxWords += wlen; 1129 put_cpu(); 1130 1131 /* Get VLAN ID from skb for printing purposes */ 1132 __vlan_hwaccel_get_tag(skb, &vlan_tci); 1133 1134 /* send down to lld */ 1135 fr_dev(fp) = lport; 1136 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: " 1137 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n", 1138 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type, 1139 vlan_tci); 1140 if (qedf_dump_frames) 1141 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 1142 1, skb->data, skb->len, false); 1143 rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0); 1144 if (rc) { 1145 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc); 1146 kfree_skb(skb); 1147 return rc; 1148 } 1149 1150 return 0; 1151 } 1152 1153 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1154 { 1155 int rval = 0; 1156 u32 *pbl; 1157 dma_addr_t page; 1158 int num_pages; 1159 1160 /* Calculate appropriate queue and PBL sizes */ 1161 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 1162 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE); 1163 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) * 1164 sizeof(void *); 1165 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE; 1166 1167 fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1168 &fcport->sq_dma, GFP_KERNEL); 1169 if (!fcport->sq) { 1170 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n"); 1171 rval = 1; 1172 goto out; 1173 } 1174 1175 fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 1176 fcport->sq_pbl_size, 1177 &fcport->sq_pbl_dma, GFP_KERNEL); 1178 if (!fcport->sq_pbl) { 1179 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n"); 1180 rval = 1; 1181 goto out_free_sq; 1182 } 1183 1184 /* Create PBL */ 1185 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE; 1186 page = fcport->sq_dma; 1187 pbl = (u32 *)fcport->sq_pbl; 1188 1189 while (num_pages--) { 1190 *pbl = U64_LO(page); 1191 pbl++; 1192 *pbl = U64_HI(page); 1193 pbl++; 1194 page += QEDF_PAGE_SIZE; 1195 } 1196 1197 return rval; 1198 1199 out_free_sq: 1200 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq, 1201 fcport->sq_dma); 1202 out: 1203 return rval; 1204 } 1205 1206 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1207 { 1208 if (fcport->sq_pbl) 1209 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size, 1210 fcport->sq_pbl, fcport->sq_pbl_dma); 1211 if (fcport->sq) 1212 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1213 fcport->sq, fcport->sq_dma); 1214 } 1215 1216 static int qedf_offload_connection(struct qedf_ctx *qedf, 1217 struct qedf_rport *fcport) 1218 { 1219 struct qed_fcoe_params_offload conn_info; 1220 u32 port_id; 1221 int rval; 1222 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe)); 1223 1224 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection " 1225 "portid=%06x.\n", fcport->rdata->ids.port_id); 1226 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle, 1227 &fcport->fw_cid, &fcport->p_doorbell); 1228 if (rval) { 1229 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection " 1230 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1231 rval = 1; /* For some reason qed returns 0 on failure here */ 1232 goto out; 1233 } 1234 1235 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x " 1236 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id, 1237 fcport->fw_cid, fcport->handle); 1238 1239 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload)); 1240 1241 /* Fill in the offload connection info */ 1242 conn_info.sq_pbl_addr = fcport->sq_pbl_dma; 1243 1244 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl); 1245 conn_info.sq_next_page_addr = 1246 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8)); 1247 1248 /* Need to use our FCoE MAC for the offload session */ 1249 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr); 1250 1251 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr); 1252 1253 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size; 1254 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20; 1255 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */ 1256 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size; 1257 1258 /* Set VLAN data */ 1259 conn_info.vlan_tag = qedf->vlan_id << 1260 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT; 1261 conn_info.vlan_tag |= 1262 qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT; 1263 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK << 1264 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT); 1265 1266 /* Set host port source id */ 1267 port_id = fc_host_port_id(qedf->lport->host); 1268 fcport->sid = port_id; 1269 conn_info.s_id.addr_hi = (port_id & 0x000000FF); 1270 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1271 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1272 1273 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq; 1274 1275 /* Set remote port destination id */ 1276 port_id = fcport->rdata->rport->port_id; 1277 conn_info.d_id.addr_hi = (port_id & 0x000000FF); 1278 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1279 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1280 1281 conn_info.def_q_idx = 0; /* Default index for send queue? */ 1282 1283 /* Set FC-TAPE specific flags if needed */ 1284 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) { 1285 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, 1286 "Enable CONF, REC for portid=%06x.\n", 1287 fcport->rdata->ids.port_id); 1288 conn_info.flags |= 1 << 1289 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT; 1290 conn_info.flags |= 1291 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) << 1292 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT; 1293 } 1294 1295 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info); 1296 if (rval) { 1297 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection " 1298 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1299 goto out_free_conn; 1300 } else 1301 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload " 1302 "succeeded portid=%06x total_sqe=%d.\n", 1303 fcport->rdata->ids.port_id, total_sqe); 1304 1305 spin_lock_init(&fcport->rport_lock); 1306 atomic_set(&fcport->free_sqes, total_sqe); 1307 return 0; 1308 out_free_conn: 1309 qed_ops->release_conn(qedf->cdev, fcport->handle); 1310 out: 1311 return rval; 1312 } 1313 1314 #define QEDF_TERM_BUFF_SIZE 10 1315 static void qedf_upload_connection(struct qedf_ctx *qedf, 1316 struct qedf_rport *fcport) 1317 { 1318 void *term_params; 1319 dma_addr_t term_params_dma; 1320 1321 /* Term params needs to be a DMA coherent buffer as qed shared the 1322 * physical DMA address with the firmware. The buffer may be used in 1323 * the receive path so we may eventually have to move this. 1324 */ 1325 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, 1326 &term_params_dma, GFP_KERNEL); 1327 1328 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection " 1329 "port_id=%06x.\n", fcport->rdata->ids.port_id); 1330 1331 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma); 1332 qed_ops->release_conn(qedf->cdev, fcport->handle); 1333 1334 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params, 1335 term_params_dma); 1336 } 1337 1338 static void qedf_cleanup_fcport(struct qedf_ctx *qedf, 1339 struct qedf_rport *fcport) 1340 { 1341 struct fc_rport_priv *rdata = fcport->rdata; 1342 1343 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n", 1344 fcport->rdata->ids.port_id); 1345 1346 /* Flush any remaining i/o's before we upload the connection */ 1347 qedf_flush_active_ios(fcport, -1); 1348 1349 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) 1350 qedf_upload_connection(qedf, fcport); 1351 qedf_free_sq(qedf, fcport); 1352 fcport->rdata = NULL; 1353 fcport->qedf = NULL; 1354 kref_put(&rdata->kref, fc_rport_destroy); 1355 } 1356 1357 /** 1358 * This event_callback is called after successful completion of libfc 1359 * initiated target login. qedf can proceed with initiating the session 1360 * establishment. 1361 */ 1362 static void qedf_rport_event_handler(struct fc_lport *lport, 1363 struct fc_rport_priv *rdata, 1364 enum fc_rport_event event) 1365 { 1366 struct qedf_ctx *qedf = lport_priv(lport); 1367 struct fc_rport *rport = rdata->rport; 1368 struct fc_rport_libfc_priv *rp; 1369 struct qedf_rport *fcport; 1370 u32 port_id; 1371 int rval; 1372 unsigned long flags; 1373 1374 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, " 1375 "port_id = 0x%x\n", event, rdata->ids.port_id); 1376 1377 switch (event) { 1378 case RPORT_EV_READY: 1379 if (!rport) { 1380 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n"); 1381 break; 1382 } 1383 1384 rp = rport->dd_data; 1385 fcport = (struct qedf_rport *)&rp[1]; 1386 fcport->qedf = qedf; 1387 1388 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) { 1389 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading " 1390 "portid=0x%x as max number of offloaded sessions " 1391 "reached.\n", rdata->ids.port_id); 1392 return; 1393 } 1394 1395 /* 1396 * Don't try to offload the session again. Can happen when we 1397 * get an ADISC 1398 */ 1399 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1400 QEDF_WARN(&(qedf->dbg_ctx), "Session already " 1401 "offloaded, portid=0x%x.\n", 1402 rdata->ids.port_id); 1403 return; 1404 } 1405 1406 if (rport->port_id == FC_FID_DIR_SERV) { 1407 /* 1408 * qedf_rport structure doesn't exist for 1409 * directory server. 1410 * We should not come here, as lport will 1411 * take care of fabric login 1412 */ 1413 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not " 1414 "exist for dir server port_id=%x\n", 1415 rdata->ids.port_id); 1416 break; 1417 } 1418 1419 if (rdata->spp_type != FC_TYPE_FCP) { 1420 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1421 "Not offloading since spp type isn't FCP\n"); 1422 break; 1423 } 1424 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1425 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1426 "Not FCP target so not offloading\n"); 1427 break; 1428 } 1429 1430 /* Initial reference held on entry, so this can't fail */ 1431 kref_get(&rdata->kref); 1432 fcport->rdata = rdata; 1433 fcport->rport = rport; 1434 1435 rval = qedf_alloc_sq(qedf, fcport); 1436 if (rval) { 1437 qedf_cleanup_fcport(qedf, fcport); 1438 break; 1439 } 1440 1441 /* Set device type */ 1442 if (rdata->flags & FC_RP_FLAGS_RETRY && 1443 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET && 1444 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) { 1445 fcport->dev_type = QEDF_RPORT_TYPE_TAPE; 1446 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1447 "portid=%06x is a TAPE device.\n", 1448 rdata->ids.port_id); 1449 } else { 1450 fcport->dev_type = QEDF_RPORT_TYPE_DISK; 1451 } 1452 1453 rval = qedf_offload_connection(qedf, fcport); 1454 if (rval) { 1455 qedf_cleanup_fcport(qedf, fcport); 1456 break; 1457 } 1458 1459 /* Add fcport to list of qedf_ctx list of offloaded ports */ 1460 spin_lock_irqsave(&qedf->hba_lock, flags); 1461 list_add_rcu(&fcport->peers, &qedf->fcports); 1462 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1463 1464 /* 1465 * Set the session ready bit to let everyone know that this 1466 * connection is ready for I/O 1467 */ 1468 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags); 1469 atomic_inc(&qedf->num_offloads); 1470 1471 break; 1472 case RPORT_EV_LOGO: 1473 case RPORT_EV_FAILED: 1474 case RPORT_EV_STOP: 1475 port_id = rdata->ids.port_id; 1476 if (port_id == FC_FID_DIR_SERV) 1477 break; 1478 1479 if (!rport) { 1480 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1481 "port_id=%x - rport notcreated Yet!!\n", port_id); 1482 break; 1483 } 1484 rp = rport->dd_data; 1485 /* 1486 * Perform session upload. Note that rdata->peers is already 1487 * removed from disc->rports list before we get this event. 1488 */ 1489 fcport = (struct qedf_rport *)&rp[1]; 1490 1491 spin_lock_irqsave(&fcport->rport_lock, flags); 1492 /* Only free this fcport if it is offloaded already */ 1493 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) && 1494 !test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1495 &fcport->flags)) { 1496 set_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1497 &fcport->flags); 1498 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1499 qedf_cleanup_fcport(qedf, fcport); 1500 /* 1501 * Remove fcport to list of qedf_ctx list of offloaded 1502 * ports 1503 */ 1504 spin_lock_irqsave(&qedf->hba_lock, flags); 1505 list_del_rcu(&fcport->peers); 1506 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1507 1508 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1509 &fcport->flags); 1510 atomic_dec(&qedf->num_offloads); 1511 } else { 1512 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1513 } 1514 break; 1515 1516 case RPORT_EV_NONE: 1517 break; 1518 } 1519 } 1520 1521 static void qedf_abort_io(struct fc_lport *lport) 1522 { 1523 /* NO-OP but need to fill in the template */ 1524 } 1525 1526 static void qedf_fcp_cleanup(struct fc_lport *lport) 1527 { 1528 /* 1529 * NO-OP but need to fill in template to prevent a NULL 1530 * function pointer dereference during link down. I/Os 1531 * will be flushed when port is uploaded. 1532 */ 1533 } 1534 1535 static struct libfc_function_template qedf_lport_template = { 1536 .frame_send = qedf_xmit, 1537 .fcp_abort_io = qedf_abort_io, 1538 .fcp_cleanup = qedf_fcp_cleanup, 1539 .rport_event_callback = qedf_rport_event_handler, 1540 .elsct_send = qedf_elsct_send, 1541 }; 1542 1543 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf) 1544 { 1545 fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO); 1546 1547 qedf->ctlr.send = qedf_fip_send; 1548 qedf->ctlr.get_src_addr = qedf_get_src_mac; 1549 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac); 1550 } 1551 1552 static void qedf_setup_fdmi(struct qedf_ctx *qedf) 1553 { 1554 struct fc_lport *lport = qedf->lport; 1555 struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host); 1556 u8 buf[8]; 1557 int i, pos; 1558 1559 /* 1560 * fdmi_enabled needs to be set for libfc to execute FDMI registration. 1561 */ 1562 lport->fdmi_enabled = 1; 1563 1564 /* 1565 * Setup the necessary fc_host attributes to that will be used to fill 1566 * in the FDMI information. 1567 */ 1568 1569 /* Get the PCI-e Device Serial Number Capability */ 1570 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN); 1571 if (pos) { 1572 pos += 4; 1573 for (i = 0; i < 8; i++) 1574 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]); 1575 1576 snprintf(fc_host->serial_number, 1577 sizeof(fc_host->serial_number), 1578 "%02X%02X%02X%02X%02X%02X%02X%02X", 1579 buf[7], buf[6], buf[5], buf[4], 1580 buf[3], buf[2], buf[1], buf[0]); 1581 } else 1582 snprintf(fc_host->serial_number, 1583 sizeof(fc_host->serial_number), "Unknown"); 1584 1585 snprintf(fc_host->manufacturer, 1586 sizeof(fc_host->manufacturer), "%s", "Cavium Inc."); 1587 1588 snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000"); 1589 1590 snprintf(fc_host->model_description, sizeof(fc_host->model_description), 1591 "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller" 1592 "(FCoE)"); 1593 1594 snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version), 1595 "Rev %d", qedf->pdev->revision); 1596 1597 snprintf(fc_host->driver_version, sizeof(fc_host->driver_version), 1598 "%s", QEDF_VERSION); 1599 1600 snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version), 1601 "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION, 1602 FW_REVISION_VERSION, FW_ENGINEERING_VERSION); 1603 } 1604 1605 static int qedf_lport_setup(struct qedf_ctx *qedf) 1606 { 1607 struct fc_lport *lport = qedf->lport; 1608 1609 lport->link_up = 0; 1610 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1611 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1612 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1613 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1614 lport->boot_time = jiffies; 1615 lport->e_d_tov = 2 * 1000; 1616 lport->r_a_tov = 10 * 1000; 1617 1618 /* Set NPIV support */ 1619 lport->does_npiv = 1; 1620 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV; 1621 1622 fc_set_wwnn(lport, qedf->wwnn); 1623 fc_set_wwpn(lport, qedf->wwpn); 1624 1625 if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) { 1626 QEDF_ERR(&qedf->dbg_ctx, 1627 "fcoe_libfc_config failed.\n"); 1628 return -ENOMEM; 1629 } 1630 1631 /* Allocate the exchange manager */ 1632 fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS, 1633 0xfffe, NULL); 1634 1635 if (fc_lport_init_stats(lport)) 1636 return -ENOMEM; 1637 1638 /* Finish lport config */ 1639 fc_lport_config(lport); 1640 1641 /* Set max frame size */ 1642 fc_set_mfs(lport, QEDF_MFS); 1643 fc_host_maxframe_size(lport->host) = lport->mfs; 1644 1645 /* Set default dev_loss_tmo based on module parameter */ 1646 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo; 1647 1648 /* Set symbolic node name */ 1649 snprintf(fc_host_symbolic_name(lport->host), 256, 1650 "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION); 1651 1652 qedf_setup_fdmi(qedf); 1653 1654 return 0; 1655 } 1656 1657 /* 1658 * NPIV functions 1659 */ 1660 1661 static int qedf_vport_libfc_config(struct fc_vport *vport, 1662 struct fc_lport *lport) 1663 { 1664 lport->link_up = 0; 1665 lport->qfull = 0; 1666 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1667 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1668 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1669 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1670 lport->boot_time = jiffies; 1671 lport->e_d_tov = 2 * 1000; 1672 lport->r_a_tov = 10 * 1000; 1673 lport->does_npiv = 1; /* Temporary until we add NPIV support */ 1674 1675 /* Allocate stats for vport */ 1676 if (fc_lport_init_stats(lport)) 1677 return -ENOMEM; 1678 1679 /* Finish lport config */ 1680 fc_lport_config(lport); 1681 1682 /* offload related configuration */ 1683 lport->crc_offload = 0; 1684 lport->seq_offload = 0; 1685 lport->lro_enabled = 0; 1686 lport->lro_xid = 0; 1687 lport->lso_max = 0; 1688 1689 return 0; 1690 } 1691 1692 static int qedf_vport_create(struct fc_vport *vport, bool disabled) 1693 { 1694 struct Scsi_Host *shost = vport_to_shost(vport); 1695 struct fc_lport *n_port = shost_priv(shost); 1696 struct fc_lport *vn_port; 1697 struct qedf_ctx *base_qedf = lport_priv(n_port); 1698 struct qedf_ctx *vport_qedf; 1699 1700 char buf[32]; 1701 int rc = 0; 1702 1703 rc = fcoe_validate_vport_create(vport); 1704 if (rc) { 1705 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1706 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, " 1707 "WWPN (0x%s) already exists.\n", buf); 1708 goto err1; 1709 } 1710 1711 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) { 1712 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport " 1713 "because link is not up.\n"); 1714 rc = -EIO; 1715 goto err1; 1716 } 1717 1718 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx)); 1719 if (!vn_port) { 1720 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport " 1721 "for vport.\n"); 1722 rc = -ENOMEM; 1723 goto err1; 1724 } 1725 1726 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1727 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n", 1728 buf); 1729 1730 /* Copy some fields from base_qedf */ 1731 vport_qedf = lport_priv(vn_port); 1732 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx)); 1733 1734 /* Set qedf data specific to this vport */ 1735 vport_qedf->lport = vn_port; 1736 /* Use same hba_lock as base_qedf */ 1737 vport_qedf->hba_lock = base_qedf->hba_lock; 1738 vport_qedf->pdev = base_qedf->pdev; 1739 vport_qedf->cmd_mgr = base_qedf->cmd_mgr; 1740 init_completion(&vport_qedf->flogi_compl); 1741 INIT_LIST_HEAD(&vport_qedf->fcports); 1742 1743 rc = qedf_vport_libfc_config(vport, vn_port); 1744 if (rc) { 1745 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory " 1746 "for lport stats.\n"); 1747 goto err2; 1748 } 1749 1750 fc_set_wwnn(vn_port, vport->node_name); 1751 fc_set_wwpn(vn_port, vport->port_name); 1752 vport_qedf->wwnn = vn_port->wwnn; 1753 vport_qedf->wwpn = vn_port->wwpn; 1754 1755 vn_port->host->transportt = qedf_fc_vport_transport_template; 1756 vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS; 1757 vn_port->host->max_lun = qedf_max_lun; 1758 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD; 1759 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN; 1760 1761 rc = scsi_add_host(vn_port->host, &vport->dev); 1762 if (rc) { 1763 QEDF_WARN(&base_qedf->dbg_ctx, 1764 "Error adding Scsi_Host rc=0x%x.\n", rc); 1765 goto err2; 1766 } 1767 1768 /* Set default dev_loss_tmo based on module parameter */ 1769 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo; 1770 1771 /* Init libfc stuffs */ 1772 memcpy(&vn_port->tt, &qedf_lport_template, 1773 sizeof(qedf_lport_template)); 1774 fc_exch_init(vn_port); 1775 fc_elsct_init(vn_port); 1776 fc_lport_init(vn_port); 1777 fc_disc_init(vn_port); 1778 fc_disc_config(vn_port, vn_port); 1779 1780 1781 /* Allocate the exchange manager */ 1782 shost = vport_to_shost(vport); 1783 n_port = shost_priv(shost); 1784 fc_exch_mgr_list_clone(n_port, vn_port); 1785 1786 /* Set max frame size */ 1787 fc_set_mfs(vn_port, QEDF_MFS); 1788 1789 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN; 1790 1791 if (disabled) { 1792 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1793 } else { 1794 vn_port->boot_time = jiffies; 1795 fc_fabric_login(vn_port); 1796 fc_vport_setlink(vn_port); 1797 } 1798 1799 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n", 1800 vn_port); 1801 1802 /* Set up debug context for vport */ 1803 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no; 1804 vport_qedf->dbg_ctx.pdev = base_qedf->pdev; 1805 1806 err2: 1807 scsi_host_put(vn_port->host); 1808 err1: 1809 return rc; 1810 } 1811 1812 static int qedf_vport_destroy(struct fc_vport *vport) 1813 { 1814 struct Scsi_Host *shost = vport_to_shost(vport); 1815 struct fc_lport *n_port = shost_priv(shost); 1816 struct fc_lport *vn_port = vport->dd_data; 1817 struct qedf_ctx *qedf = lport_priv(vn_port); 1818 1819 if (!qedf) { 1820 QEDF_ERR(NULL, "qedf is NULL.\n"); 1821 goto out; 1822 } 1823 1824 /* Set unloading bit on vport qedf_ctx to prevent more I/O */ 1825 set_bit(QEDF_UNLOADING, &qedf->flags); 1826 1827 mutex_lock(&n_port->lp_mutex); 1828 list_del(&vn_port->list); 1829 mutex_unlock(&n_port->lp_mutex); 1830 1831 fc_fabric_logoff(vn_port); 1832 fc_lport_destroy(vn_port); 1833 1834 /* Detach from scsi-ml */ 1835 fc_remove_host(vn_port->host); 1836 scsi_remove_host(vn_port->host); 1837 1838 /* 1839 * Only try to release the exchange manager if the vn_port 1840 * configuration is complete. 1841 */ 1842 if (vn_port->state == LPORT_ST_READY) 1843 fc_exch_mgr_free(vn_port); 1844 1845 /* Free memory used by statistical counters */ 1846 fc_lport_free_stats(vn_port); 1847 1848 /* Release Scsi_Host */ 1849 if (vn_port->host) 1850 scsi_host_put(vn_port->host); 1851 1852 out: 1853 return 0; 1854 } 1855 1856 static int qedf_vport_disable(struct fc_vport *vport, bool disable) 1857 { 1858 struct fc_lport *lport = vport->dd_data; 1859 1860 if (disable) { 1861 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1862 fc_fabric_logoff(lport); 1863 } else { 1864 lport->boot_time = jiffies; 1865 fc_fabric_login(lport); 1866 fc_vport_setlink(lport); 1867 } 1868 return 0; 1869 } 1870 1871 /* 1872 * During removal we need to wait for all the vports associated with a port 1873 * to be destroyed so we avoid a race condition where libfc is still trying 1874 * to reap vports while the driver remove function has already reaped the 1875 * driver contexts associated with the physical port. 1876 */ 1877 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf) 1878 { 1879 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host); 1880 1881 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 1882 "Entered.\n"); 1883 while (fc_host->npiv_vports_inuse > 0) { 1884 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 1885 "Waiting for all vports to be reaped.\n"); 1886 msleep(1000); 1887 } 1888 } 1889 1890 /** 1891 * qedf_fcoe_reset - Resets the fcoe 1892 * 1893 * @shost: shost the reset is from 1894 * 1895 * Returns: always 0 1896 */ 1897 static int qedf_fcoe_reset(struct Scsi_Host *shost) 1898 { 1899 struct fc_lport *lport = shost_priv(shost); 1900 1901 qedf_ctx_soft_reset(lport); 1902 return 0; 1903 } 1904 1905 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host 1906 *shost) 1907 { 1908 struct fc_host_statistics *qedf_stats; 1909 struct fc_lport *lport = shost_priv(shost); 1910 struct qedf_ctx *qedf = lport_priv(lport); 1911 struct qed_fcoe_stats *fw_fcoe_stats; 1912 1913 qedf_stats = fc_get_host_stats(shost); 1914 1915 /* We don't collect offload stats for specific NPIV ports */ 1916 if (lport->vport) 1917 goto out; 1918 1919 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL); 1920 if (!fw_fcoe_stats) { 1921 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for " 1922 "fw_fcoe_stats.\n"); 1923 goto out; 1924 } 1925 1926 mutex_lock(&qedf->stats_mutex); 1927 1928 /* Query firmware for offload stats */ 1929 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats); 1930 1931 /* 1932 * The expectation is that we add our offload stats to the stats 1933 * being maintained by libfc each time the fc_get_host_status callback 1934 * is invoked. The additions are not carried over for each call to 1935 * the fc_get_host_stats callback. 1936 */ 1937 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt + 1938 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt + 1939 fw_fcoe_stats->fcoe_tx_other_pkt_cnt; 1940 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt + 1941 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt + 1942 fw_fcoe_stats->fcoe_rx_other_pkt_cnt; 1943 qedf_stats->fcp_input_megabytes += 1944 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000); 1945 qedf_stats->fcp_output_megabytes += 1946 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000); 1947 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4; 1948 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4; 1949 qedf_stats->invalid_crc_count += 1950 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt; 1951 qedf_stats->dumped_frames = 1952 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 1953 qedf_stats->error_frames += 1954 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 1955 qedf_stats->fcp_input_requests += qedf->input_requests; 1956 qedf_stats->fcp_output_requests += qedf->output_requests; 1957 qedf_stats->fcp_control_requests += qedf->control_requests; 1958 qedf_stats->fcp_packet_aborts += qedf->packet_aborts; 1959 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures; 1960 1961 mutex_unlock(&qedf->stats_mutex); 1962 kfree(fw_fcoe_stats); 1963 out: 1964 return qedf_stats; 1965 } 1966 1967 static struct fc_function_template qedf_fc_transport_fn = { 1968 .show_host_node_name = 1, 1969 .show_host_port_name = 1, 1970 .show_host_supported_classes = 1, 1971 .show_host_supported_fc4s = 1, 1972 .show_host_active_fc4s = 1, 1973 .show_host_maxframe_size = 1, 1974 1975 .show_host_port_id = 1, 1976 .show_host_supported_speeds = 1, 1977 .get_host_speed = fc_get_host_speed, 1978 .show_host_speed = 1, 1979 .show_host_port_type = 1, 1980 .get_host_port_state = fc_get_host_port_state, 1981 .show_host_port_state = 1, 1982 .show_host_symbolic_name = 1, 1983 1984 /* 1985 * Tell FC transport to allocate enough space to store the backpointer 1986 * for the associate qedf_rport struct. 1987 */ 1988 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 1989 sizeof(struct qedf_rport)), 1990 .show_rport_maxframe_size = 1, 1991 .show_rport_supported_classes = 1, 1992 .show_host_fabric_name = 1, 1993 .show_starget_node_name = 1, 1994 .show_starget_port_name = 1, 1995 .show_starget_port_id = 1, 1996 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 1997 .show_rport_dev_loss_tmo = 1, 1998 .get_fc_host_stats = qedf_fc_get_host_stats, 1999 .issue_fc_host_lip = qedf_fcoe_reset, 2000 .vport_create = qedf_vport_create, 2001 .vport_delete = qedf_vport_destroy, 2002 .vport_disable = qedf_vport_disable, 2003 .bsg_request = fc_lport_bsg_request, 2004 }; 2005 2006 static struct fc_function_template qedf_fc_vport_transport_fn = { 2007 .show_host_node_name = 1, 2008 .show_host_port_name = 1, 2009 .show_host_supported_classes = 1, 2010 .show_host_supported_fc4s = 1, 2011 .show_host_active_fc4s = 1, 2012 .show_host_maxframe_size = 1, 2013 .show_host_port_id = 1, 2014 .show_host_supported_speeds = 1, 2015 .get_host_speed = fc_get_host_speed, 2016 .show_host_speed = 1, 2017 .show_host_port_type = 1, 2018 .get_host_port_state = fc_get_host_port_state, 2019 .show_host_port_state = 1, 2020 .show_host_symbolic_name = 1, 2021 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2022 sizeof(struct qedf_rport)), 2023 .show_rport_maxframe_size = 1, 2024 .show_rport_supported_classes = 1, 2025 .show_host_fabric_name = 1, 2026 .show_starget_node_name = 1, 2027 .show_starget_port_name = 1, 2028 .show_starget_port_id = 1, 2029 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2030 .show_rport_dev_loss_tmo = 1, 2031 .get_fc_host_stats = fc_get_host_stats, 2032 .issue_fc_host_lip = qedf_fcoe_reset, 2033 .bsg_request = fc_lport_bsg_request, 2034 }; 2035 2036 static bool qedf_fp_has_work(struct qedf_fastpath *fp) 2037 { 2038 struct qedf_ctx *qedf = fp->qedf; 2039 struct global_queue *que; 2040 struct qed_sb_info *sb_info = fp->sb_info; 2041 struct status_block_e4 *sb = sb_info->sb_virt; 2042 u16 prod_idx; 2043 2044 /* Get the pointer to the global CQ this completion is on */ 2045 que = qedf->global_queues[fp->sb_id]; 2046 2047 /* Be sure all responses have been written to PI */ 2048 rmb(); 2049 2050 /* Get the current firmware producer index */ 2051 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2052 2053 return (que->cq_prod_idx != prod_idx); 2054 } 2055 2056 /* 2057 * Interrupt handler code. 2058 */ 2059 2060 /* Process completion queue and copy CQE contents for deferred processesing 2061 * 2062 * Return true if we should wake the I/O thread, false if not. 2063 */ 2064 static bool qedf_process_completions(struct qedf_fastpath *fp) 2065 { 2066 struct qedf_ctx *qedf = fp->qedf; 2067 struct qed_sb_info *sb_info = fp->sb_info; 2068 struct status_block_e4 *sb = sb_info->sb_virt; 2069 struct global_queue *que; 2070 u16 prod_idx; 2071 struct fcoe_cqe *cqe; 2072 struct qedf_io_work *io_work; 2073 int num_handled = 0; 2074 unsigned int cpu; 2075 struct qedf_ioreq *io_req = NULL; 2076 u16 xid; 2077 u16 new_cqes; 2078 u32 comp_type; 2079 2080 /* Get the current firmware producer index */ 2081 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2082 2083 /* Get the pointer to the global CQ this completion is on */ 2084 que = qedf->global_queues[fp->sb_id]; 2085 2086 /* Calculate the amount of new elements since last processing */ 2087 new_cqes = (prod_idx >= que->cq_prod_idx) ? 2088 (prod_idx - que->cq_prod_idx) : 2089 0x10000 - que->cq_prod_idx + prod_idx; 2090 2091 /* Save producer index */ 2092 que->cq_prod_idx = prod_idx; 2093 2094 while (new_cqes) { 2095 fp->completions++; 2096 num_handled++; 2097 cqe = &que->cq[que->cq_cons_idx]; 2098 2099 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2100 FCOE_CQE_CQE_TYPE_MASK; 2101 2102 /* 2103 * Process unsolicited CQEs directly in the interrupt handler 2104 * sine we need the fastpath ID 2105 */ 2106 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) { 2107 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL, 2108 "Unsolicated CQE.\n"); 2109 qedf_process_unsol_compl(qedf, fp->sb_id, cqe); 2110 /* 2111 * Don't add a work list item. Increment consumer 2112 * consumer index and move on. 2113 */ 2114 goto inc_idx; 2115 } 2116 2117 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2118 io_req = &qedf->cmd_mgr->cmds[xid]; 2119 2120 /* 2121 * Figure out which percpu thread we should queue this I/O 2122 * on. 2123 */ 2124 if (!io_req) 2125 /* If there is not io_req assocated with this CQE 2126 * just queue it on CPU 0 2127 */ 2128 cpu = 0; 2129 else { 2130 cpu = io_req->cpu; 2131 io_req->int_cpu = smp_processor_id(); 2132 } 2133 2134 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC); 2135 if (!io_work) { 2136 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate " 2137 "work for I/O completion.\n"); 2138 continue; 2139 } 2140 memset(io_work, 0, sizeof(struct qedf_io_work)); 2141 2142 INIT_WORK(&io_work->work, qedf_fp_io_handler); 2143 2144 /* Copy contents of CQE for deferred processing */ 2145 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe)); 2146 2147 io_work->qedf = fp->qedf; 2148 io_work->fp = NULL; /* Only used for unsolicited frames */ 2149 2150 queue_work_on(cpu, qedf_io_wq, &io_work->work); 2151 2152 inc_idx: 2153 que->cq_cons_idx++; 2154 if (que->cq_cons_idx == fp->cq_num_entries) 2155 que->cq_cons_idx = 0; 2156 new_cqes--; 2157 } 2158 2159 return true; 2160 } 2161 2162 2163 /* MSI-X fastpath handler code */ 2164 static irqreturn_t qedf_msix_handler(int irq, void *dev_id) 2165 { 2166 struct qedf_fastpath *fp = dev_id; 2167 2168 if (!fp) { 2169 QEDF_ERR(NULL, "fp is null.\n"); 2170 return IRQ_HANDLED; 2171 } 2172 if (!fp->sb_info) { 2173 QEDF_ERR(NULL, "fp->sb_info in null."); 2174 return IRQ_HANDLED; 2175 } 2176 2177 /* 2178 * Disable interrupts for this status block while we process new 2179 * completions 2180 */ 2181 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/); 2182 2183 while (1) { 2184 qedf_process_completions(fp); 2185 2186 if (qedf_fp_has_work(fp) == 0) { 2187 /* Update the sb information */ 2188 qed_sb_update_sb_idx(fp->sb_info); 2189 2190 /* Check for more work */ 2191 rmb(); 2192 2193 if (qedf_fp_has_work(fp) == 0) { 2194 /* Re-enable interrupts */ 2195 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 2196 return IRQ_HANDLED; 2197 } 2198 } 2199 } 2200 2201 /* Do we ever want to break out of above loop? */ 2202 return IRQ_HANDLED; 2203 } 2204 2205 /* simd handler for MSI/INTa */ 2206 static void qedf_simd_int_handler(void *cookie) 2207 { 2208 /* Cookie is qedf_ctx struct */ 2209 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2210 2211 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf); 2212 } 2213 2214 #define QEDF_SIMD_HANDLER_NUM 0 2215 static void qedf_sync_free_irqs(struct qedf_ctx *qedf) 2216 { 2217 int i; 2218 u16 vector_idx = 0; 2219 u32 vector; 2220 2221 if (qedf->int_info.msix_cnt) { 2222 for (i = 0; i < qedf->int_info.used_cnt; i++) { 2223 vector_idx = i * qedf->dev_info.common.num_hwfns + 2224 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2225 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2226 "Freeing IRQ #%d vector_idx=%d.\n", 2227 i, vector_idx); 2228 vector = qedf->int_info.msix[vector_idx].vector; 2229 synchronize_irq(vector); 2230 irq_set_affinity_hint(vector, NULL); 2231 irq_set_affinity_notifier(vector, NULL); 2232 free_irq(vector, &qedf->fp_array[i]); 2233 } 2234 } else 2235 qed_ops->common->simd_handler_clean(qedf->cdev, 2236 QEDF_SIMD_HANDLER_NUM); 2237 2238 qedf->int_info.used_cnt = 0; 2239 qed_ops->common->set_fp_int(qedf->cdev, 0); 2240 } 2241 2242 static int qedf_request_msix_irq(struct qedf_ctx *qedf) 2243 { 2244 int i, rc, cpu; 2245 u16 vector_idx = 0; 2246 u32 vector; 2247 2248 cpu = cpumask_first(cpu_online_mask); 2249 for (i = 0; i < qedf->num_queues; i++) { 2250 vector_idx = i * qedf->dev_info.common.num_hwfns + 2251 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2252 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2253 "Requesting IRQ #%d vector_idx=%d.\n", 2254 i, vector_idx); 2255 vector = qedf->int_info.msix[vector_idx].vector; 2256 rc = request_irq(vector, qedf_msix_handler, 0, "qedf", 2257 &qedf->fp_array[i]); 2258 2259 if (rc) { 2260 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n"); 2261 qedf_sync_free_irqs(qedf); 2262 return rc; 2263 } 2264 2265 qedf->int_info.used_cnt++; 2266 rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu)); 2267 cpu = cpumask_next(cpu, cpu_online_mask); 2268 } 2269 2270 return 0; 2271 } 2272 2273 static int qedf_setup_int(struct qedf_ctx *qedf) 2274 { 2275 int rc = 0; 2276 2277 /* 2278 * Learn interrupt configuration 2279 */ 2280 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus()); 2281 if (rc <= 0) 2282 return 0; 2283 2284 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info); 2285 if (rc) 2286 return 0; 2287 2288 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = " 2289 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt, 2290 num_online_cpus()); 2291 2292 if (qedf->int_info.msix_cnt) 2293 return qedf_request_msix_irq(qedf); 2294 2295 qed_ops->common->simd_handler_config(qedf->cdev, &qedf, 2296 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler); 2297 qedf->int_info.used_cnt = 1; 2298 2299 QEDF_ERR(&qedf->dbg_ctx, 2300 "Cannot load driver due to a lack of MSI-X vectors.\n"); 2301 return -EINVAL; 2302 } 2303 2304 /* Main function for libfc frame reception */ 2305 static void qedf_recv_frame(struct qedf_ctx *qedf, 2306 struct sk_buff *skb) 2307 { 2308 u32 fr_len; 2309 struct fc_lport *lport; 2310 struct fc_frame_header *fh; 2311 struct fcoe_crc_eof crc_eof; 2312 struct fc_frame *fp; 2313 u8 *mac = NULL; 2314 u8 *dest_mac = NULL; 2315 struct fcoe_hdr *hp; 2316 struct qedf_rport *fcport; 2317 struct fc_lport *vn_port; 2318 u32 f_ctl; 2319 2320 lport = qedf->lport; 2321 if (lport == NULL || lport->state == LPORT_ST_DISABLED) { 2322 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n"); 2323 kfree_skb(skb); 2324 return; 2325 } 2326 2327 if (skb_is_nonlinear(skb)) 2328 skb_linearize(skb); 2329 mac = eth_hdr(skb)->h_source; 2330 dest_mac = eth_hdr(skb)->h_dest; 2331 2332 /* Pull the header */ 2333 hp = (struct fcoe_hdr *)skb->data; 2334 fh = (struct fc_frame_header *) skb_transport_header(skb); 2335 skb_pull(skb, sizeof(struct fcoe_hdr)); 2336 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 2337 2338 fp = (struct fc_frame *)skb; 2339 fc_frame_init(fp); 2340 fr_dev(fp) = lport; 2341 fr_sof(fp) = hp->fcoe_sof; 2342 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 2343 kfree_skb(skb); 2344 return; 2345 } 2346 fr_eof(fp) = crc_eof.fcoe_eof; 2347 fr_crc(fp) = crc_eof.fcoe_crc32; 2348 if (pskb_trim(skb, fr_len)) { 2349 kfree_skb(skb); 2350 return; 2351 } 2352 2353 fh = fc_frame_header_get(fp); 2354 2355 /* 2356 * Invalid frame filters. 2357 */ 2358 2359 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 2360 fh->fh_type == FC_TYPE_FCP) { 2361 /* Drop FCP data. We dont this in L2 path */ 2362 kfree_skb(skb); 2363 return; 2364 } 2365 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 2366 fh->fh_type == FC_TYPE_ELS) { 2367 switch (fc_frame_payload_op(fp)) { 2368 case ELS_LOGO: 2369 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 2370 /* drop non-FIP LOGO */ 2371 kfree_skb(skb); 2372 return; 2373 } 2374 break; 2375 } 2376 } 2377 2378 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 2379 /* Drop incoming ABTS */ 2380 kfree_skb(skb); 2381 return; 2382 } 2383 2384 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { 2385 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2386 "FC frame d_id mismatch with MAC %pM.\n", dest_mac); 2387 kfree_skb(skb); 2388 return; 2389 } 2390 2391 if (qedf->ctlr.state) { 2392 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) { 2393 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2394 "Wrong source address: mac:%pM dest_addr:%pM.\n", 2395 mac, qedf->ctlr.dest_addr); 2396 kfree_skb(skb); 2397 return; 2398 } 2399 } 2400 2401 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 2402 2403 /* 2404 * If the destination ID from the frame header does not match what we 2405 * have on record for lport and the search for a NPIV port came up 2406 * empty then this is not addressed to our port so simply drop it. 2407 */ 2408 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { 2409 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2410 "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n", 2411 lport->port_id, ntoh24(fh->fh_d_id)); 2412 kfree_skb(skb); 2413 return; 2414 } 2415 2416 f_ctl = ntoh24(fh->fh_f_ctl); 2417 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) && 2418 (f_ctl & FC_FC_EX_CTX)) { 2419 /* Drop incoming ABTS response that has both SEQ/EX CTX set */ 2420 kfree_skb(skb); 2421 return; 2422 } 2423 2424 /* 2425 * If a connection is uploading, drop incoming FCoE frames as there 2426 * is a small window where we could try to return a frame while libfc 2427 * is trying to clean things up. 2428 */ 2429 2430 /* Get fcport associated with d_id if it exists */ 2431 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 2432 2433 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 2434 &fcport->flags)) { 2435 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2436 "Connection uploading, dropping fp=%p.\n", fp); 2437 kfree_skb(skb); 2438 return; 2439 } 2440 2441 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: " 2442 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp, 2443 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, 2444 fh->fh_type); 2445 if (qedf_dump_frames) 2446 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 2447 1, skb->data, skb->len, false); 2448 fc_exch_recv(lport, fp); 2449 } 2450 2451 static void qedf_ll2_process_skb(struct work_struct *work) 2452 { 2453 struct qedf_skb_work *skb_work = 2454 container_of(work, struct qedf_skb_work, work); 2455 struct qedf_ctx *qedf = skb_work->qedf; 2456 struct sk_buff *skb = skb_work->skb; 2457 struct ethhdr *eh; 2458 2459 if (!qedf) { 2460 QEDF_ERR(NULL, "qedf is NULL\n"); 2461 goto err_out; 2462 } 2463 2464 eh = (struct ethhdr *)skb->data; 2465 2466 /* Undo VLAN encapsulation */ 2467 if (eh->h_proto == htons(ETH_P_8021Q)) { 2468 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); 2469 eh = skb_pull(skb, VLAN_HLEN); 2470 skb_reset_mac_header(skb); 2471 } 2472 2473 /* 2474 * Process either a FIP frame or FCoE frame based on the 2475 * protocol value. If it's not either just drop the 2476 * frame. 2477 */ 2478 if (eh->h_proto == htons(ETH_P_FIP)) { 2479 qedf_fip_recv(qedf, skb); 2480 goto out; 2481 } else if (eh->h_proto == htons(ETH_P_FCOE)) { 2482 __skb_pull(skb, ETH_HLEN); 2483 qedf_recv_frame(qedf, skb); 2484 goto out; 2485 } else 2486 goto err_out; 2487 2488 err_out: 2489 kfree_skb(skb); 2490 out: 2491 kfree(skb_work); 2492 return; 2493 } 2494 2495 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb, 2496 u32 arg1, u32 arg2) 2497 { 2498 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2499 struct qedf_skb_work *skb_work; 2500 2501 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 2502 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2503 "Dropping frame as link state is down.\n"); 2504 kfree_skb(skb); 2505 return 0; 2506 } 2507 2508 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC); 2509 if (!skb_work) { 2510 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so " 2511 "dropping frame.\n"); 2512 kfree_skb(skb); 2513 return 0; 2514 } 2515 2516 INIT_WORK(&skb_work->work, qedf_ll2_process_skb); 2517 skb_work->skb = skb; 2518 skb_work->qedf = qedf; 2519 queue_work(qedf->ll2_recv_wq, &skb_work->work); 2520 2521 return 0; 2522 } 2523 2524 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = { 2525 .rx_cb = qedf_ll2_rx, 2526 .tx_cb = NULL, 2527 }; 2528 2529 /* Main thread to process I/O completions */ 2530 void qedf_fp_io_handler(struct work_struct *work) 2531 { 2532 struct qedf_io_work *io_work = 2533 container_of(work, struct qedf_io_work, work); 2534 u32 comp_type; 2535 2536 /* 2537 * Deferred part of unsolicited CQE sends 2538 * frame to libfc. 2539 */ 2540 comp_type = (io_work->cqe.cqe_data >> 2541 FCOE_CQE_CQE_TYPE_SHIFT) & 2542 FCOE_CQE_CQE_TYPE_MASK; 2543 if (comp_type == FCOE_UNSOLIC_CQE_TYPE && 2544 io_work->fp) 2545 fc_exch_recv(io_work->qedf->lport, io_work->fp); 2546 else 2547 qedf_process_cqe(io_work->qedf, &io_work->cqe); 2548 2549 kfree(io_work); 2550 } 2551 2552 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf, 2553 struct qed_sb_info *sb_info, u16 sb_id) 2554 { 2555 struct status_block_e4 *sb_virt; 2556 dma_addr_t sb_phys; 2557 int ret; 2558 2559 sb_virt = dma_alloc_coherent(&qedf->pdev->dev, 2560 sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL); 2561 2562 if (!sb_virt) { 2563 QEDF_ERR(&(qedf->dbg_ctx), "Status block allocation failed " 2564 "for id = %d.\n", sb_id); 2565 return -ENOMEM; 2566 } 2567 2568 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys, 2569 sb_id, QED_SB_TYPE_STORAGE); 2570 2571 if (ret) { 2572 QEDF_ERR(&(qedf->dbg_ctx), "Status block initialization " 2573 "failed for id = %d.\n", sb_id); 2574 return ret; 2575 } 2576 2577 return 0; 2578 } 2579 2580 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info) 2581 { 2582 if (sb_info->sb_virt) 2583 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt), 2584 (void *)sb_info->sb_virt, sb_info->sb_phys); 2585 } 2586 2587 static void qedf_destroy_sb(struct qedf_ctx *qedf) 2588 { 2589 int id; 2590 struct qedf_fastpath *fp = NULL; 2591 2592 for (id = 0; id < qedf->num_queues; id++) { 2593 fp = &(qedf->fp_array[id]); 2594 if (fp->sb_id == QEDF_SB_ID_NULL) 2595 break; 2596 qedf_free_sb(qedf, fp->sb_info); 2597 kfree(fp->sb_info); 2598 } 2599 kfree(qedf->fp_array); 2600 } 2601 2602 static int qedf_prepare_sb(struct qedf_ctx *qedf) 2603 { 2604 int id; 2605 struct qedf_fastpath *fp; 2606 int ret; 2607 2608 qedf->fp_array = 2609 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath), 2610 GFP_KERNEL); 2611 2612 if (!qedf->fp_array) { 2613 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation " 2614 "failed.\n"); 2615 return -ENOMEM; 2616 } 2617 2618 for (id = 0; id < qedf->num_queues; id++) { 2619 fp = &(qedf->fp_array[id]); 2620 fp->sb_id = QEDF_SB_ID_NULL; 2621 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL); 2622 if (!fp->sb_info) { 2623 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct " 2624 "allocation failed.\n"); 2625 goto err; 2626 } 2627 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id); 2628 if (ret) { 2629 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and " 2630 "initialization failed.\n"); 2631 goto err; 2632 } 2633 fp->sb_id = id; 2634 fp->qedf = qedf; 2635 fp->cq_num_entries = 2636 qedf->global_queues[id]->cq_mem_size / 2637 sizeof(struct fcoe_cqe); 2638 } 2639 err: 2640 return 0; 2641 } 2642 2643 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe) 2644 { 2645 u16 xid; 2646 struct qedf_ioreq *io_req; 2647 struct qedf_rport *fcport; 2648 u32 comp_type; 2649 2650 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2651 FCOE_CQE_CQE_TYPE_MASK; 2652 2653 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2654 io_req = &qedf->cmd_mgr->cmds[xid]; 2655 2656 /* Completion not for a valid I/O anymore so just return */ 2657 if (!io_req) 2658 return; 2659 2660 fcport = io_req->fcport; 2661 2662 if (fcport == NULL) { 2663 QEDF_ERR(&(qedf->dbg_ctx), "fcport is NULL.\n"); 2664 return; 2665 } 2666 2667 /* 2668 * Check that fcport is offloaded. If it isn't then the spinlock 2669 * isn't valid and shouldn't be taken. We should just return. 2670 */ 2671 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 2672 QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n"); 2673 return; 2674 } 2675 2676 2677 switch (comp_type) { 2678 case FCOE_GOOD_COMPLETION_CQE_TYPE: 2679 atomic_inc(&fcport->free_sqes); 2680 switch (io_req->cmd_type) { 2681 case QEDF_SCSI_CMD: 2682 qedf_scsi_completion(qedf, cqe, io_req); 2683 break; 2684 case QEDF_ELS: 2685 qedf_process_els_compl(qedf, cqe, io_req); 2686 break; 2687 case QEDF_TASK_MGMT_CMD: 2688 qedf_process_tmf_compl(qedf, cqe, io_req); 2689 break; 2690 case QEDF_SEQ_CLEANUP: 2691 qedf_process_seq_cleanup_compl(qedf, cqe, io_req); 2692 break; 2693 } 2694 break; 2695 case FCOE_ERROR_DETECTION_CQE_TYPE: 2696 atomic_inc(&fcport->free_sqes); 2697 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2698 "Error detect CQE.\n"); 2699 qedf_process_error_detect(qedf, cqe, io_req); 2700 break; 2701 case FCOE_EXCH_CLEANUP_CQE_TYPE: 2702 atomic_inc(&fcport->free_sqes); 2703 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2704 "Cleanup CQE.\n"); 2705 qedf_process_cleanup_compl(qedf, cqe, io_req); 2706 break; 2707 case FCOE_ABTS_CQE_TYPE: 2708 atomic_inc(&fcport->free_sqes); 2709 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2710 "Abort CQE.\n"); 2711 qedf_process_abts_compl(qedf, cqe, io_req); 2712 break; 2713 case FCOE_DUMMY_CQE_TYPE: 2714 atomic_inc(&fcport->free_sqes); 2715 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2716 "Dummy CQE.\n"); 2717 break; 2718 case FCOE_LOCAL_COMP_CQE_TYPE: 2719 atomic_inc(&fcport->free_sqes); 2720 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2721 "Local completion CQE.\n"); 2722 break; 2723 case FCOE_WARNING_CQE_TYPE: 2724 atomic_inc(&fcport->free_sqes); 2725 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2726 "Warning CQE.\n"); 2727 qedf_process_warning_compl(qedf, cqe, io_req); 2728 break; 2729 case MAX_FCOE_CQE_TYPE: 2730 atomic_inc(&fcport->free_sqes); 2731 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2732 "Max FCoE CQE.\n"); 2733 break; 2734 default: 2735 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2736 "Default CQE.\n"); 2737 break; 2738 } 2739 } 2740 2741 static void qedf_free_bdq(struct qedf_ctx *qedf) 2742 { 2743 int i; 2744 2745 if (qedf->bdq_pbl_list) 2746 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE, 2747 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma); 2748 2749 if (qedf->bdq_pbl) 2750 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size, 2751 qedf->bdq_pbl, qedf->bdq_pbl_dma); 2752 2753 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2754 if (qedf->bdq[i].buf_addr) { 2755 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE, 2756 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma); 2757 } 2758 } 2759 } 2760 2761 static void qedf_free_global_queues(struct qedf_ctx *qedf) 2762 { 2763 int i; 2764 struct global_queue **gl = qedf->global_queues; 2765 2766 for (i = 0; i < qedf->num_queues; i++) { 2767 if (!gl[i]) 2768 continue; 2769 2770 if (gl[i]->cq) 2771 dma_free_coherent(&qedf->pdev->dev, 2772 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma); 2773 if (gl[i]->cq_pbl) 2774 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size, 2775 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 2776 2777 kfree(gl[i]); 2778 } 2779 2780 qedf_free_bdq(qedf); 2781 } 2782 2783 static int qedf_alloc_bdq(struct qedf_ctx *qedf) 2784 { 2785 int i; 2786 struct scsi_bd *pbl; 2787 u64 *list; 2788 dma_addr_t page; 2789 2790 /* Alloc dma memory for BDQ buffers */ 2791 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2792 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev, 2793 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL); 2794 if (!qedf->bdq[i].buf_addr) { 2795 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ " 2796 "buffer %d.\n", i); 2797 return -ENOMEM; 2798 } 2799 } 2800 2801 /* Alloc dma memory for BDQ page buffer list */ 2802 qedf->bdq_pbl_mem_size = 2803 QEDF_BDQ_SIZE * sizeof(struct scsi_bd); 2804 qedf->bdq_pbl_mem_size = 2805 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE); 2806 2807 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 2808 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL); 2809 if (!qedf->bdq_pbl) { 2810 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n"); 2811 return -ENOMEM; 2812 } 2813 2814 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2815 "BDQ PBL addr=0x%p dma=%pad\n", 2816 qedf->bdq_pbl, &qedf->bdq_pbl_dma); 2817 2818 /* 2819 * Populate BDQ PBL with physical and virtual address of individual 2820 * BDQ buffers 2821 */ 2822 pbl = (struct scsi_bd *)qedf->bdq_pbl; 2823 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2824 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma)); 2825 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma)); 2826 pbl->opaque.fcoe_opaque.hi = 0; 2827 /* Opaque lo data is an index into the BDQ array */ 2828 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i); 2829 pbl++; 2830 } 2831 2832 /* Allocate list of PBL pages */ 2833 qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev, 2834 QEDF_PAGE_SIZE, 2835 &qedf->bdq_pbl_list_dma, 2836 GFP_KERNEL); 2837 if (!qedf->bdq_pbl_list) { 2838 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n"); 2839 return -ENOMEM; 2840 } 2841 2842 /* 2843 * Now populate PBL list with pages that contain pointers to the 2844 * individual buffers. 2845 */ 2846 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size / 2847 QEDF_PAGE_SIZE; 2848 list = (u64 *)qedf->bdq_pbl_list; 2849 page = qedf->bdq_pbl_list_dma; 2850 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) { 2851 *list = qedf->bdq_pbl_dma; 2852 list++; 2853 page += QEDF_PAGE_SIZE; 2854 } 2855 2856 return 0; 2857 } 2858 2859 static int qedf_alloc_global_queues(struct qedf_ctx *qedf) 2860 { 2861 u32 *list; 2862 int i; 2863 int status = 0, rc; 2864 u32 *pbl; 2865 dma_addr_t page; 2866 int num_pages; 2867 2868 /* Allocate and map CQs, RQs */ 2869 /* 2870 * Number of global queues (CQ / RQ). This should 2871 * be <= number of available MSIX vectors for the PF 2872 */ 2873 if (!qedf->num_queues) { 2874 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n"); 2875 return 1; 2876 } 2877 2878 /* 2879 * Make sure we allocated the PBL that will contain the physical 2880 * addresses of our queues 2881 */ 2882 if (!qedf->p_cpuq) { 2883 status = 1; 2884 goto mem_alloc_failure; 2885 } 2886 2887 qedf->global_queues = kzalloc((sizeof(struct global_queue *) 2888 * qedf->num_queues), GFP_KERNEL); 2889 if (!qedf->global_queues) { 2890 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global " 2891 "queues array ptr memory\n"); 2892 return -ENOMEM; 2893 } 2894 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2895 "qedf->global_queues=%p.\n", qedf->global_queues); 2896 2897 /* Allocate DMA coherent buffers for BDQ */ 2898 rc = qedf_alloc_bdq(qedf); 2899 if (rc) 2900 goto mem_alloc_failure; 2901 2902 /* Allocate a CQ and an associated PBL for each MSI-X vector */ 2903 for (i = 0; i < qedf->num_queues; i++) { 2904 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue), 2905 GFP_KERNEL); 2906 if (!qedf->global_queues[i]) { 2907 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate " 2908 "global queue %d.\n", i); 2909 status = -ENOMEM; 2910 goto mem_alloc_failure; 2911 } 2912 2913 qedf->global_queues[i]->cq_mem_size = 2914 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 2915 qedf->global_queues[i]->cq_mem_size = 2916 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE); 2917 2918 qedf->global_queues[i]->cq_pbl_size = 2919 (qedf->global_queues[i]->cq_mem_size / 2920 PAGE_SIZE) * sizeof(void *); 2921 qedf->global_queues[i]->cq_pbl_size = 2922 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE); 2923 2924 qedf->global_queues[i]->cq = 2925 dma_alloc_coherent(&qedf->pdev->dev, 2926 qedf->global_queues[i]->cq_mem_size, 2927 &qedf->global_queues[i]->cq_dma, 2928 GFP_KERNEL); 2929 2930 if (!qedf->global_queues[i]->cq) { 2931 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n"); 2932 status = -ENOMEM; 2933 goto mem_alloc_failure; 2934 } 2935 2936 qedf->global_queues[i]->cq_pbl = 2937 dma_alloc_coherent(&qedf->pdev->dev, 2938 qedf->global_queues[i]->cq_pbl_size, 2939 &qedf->global_queues[i]->cq_pbl_dma, 2940 GFP_KERNEL); 2941 2942 if (!qedf->global_queues[i]->cq_pbl) { 2943 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n"); 2944 status = -ENOMEM; 2945 goto mem_alloc_failure; 2946 } 2947 2948 /* Create PBL */ 2949 num_pages = qedf->global_queues[i]->cq_mem_size / 2950 QEDF_PAGE_SIZE; 2951 page = qedf->global_queues[i]->cq_dma; 2952 pbl = (u32 *)qedf->global_queues[i]->cq_pbl; 2953 2954 while (num_pages--) { 2955 *pbl = U64_LO(page); 2956 pbl++; 2957 *pbl = U64_HI(page); 2958 pbl++; 2959 page += QEDF_PAGE_SIZE; 2960 } 2961 /* Set the initial consumer index for cq */ 2962 qedf->global_queues[i]->cq_cons_idx = 0; 2963 } 2964 2965 list = (u32 *)qedf->p_cpuq; 2966 2967 /* 2968 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 2969 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 2970 * to the physical address which contains an array of pointers to 2971 * the physical addresses of the specific queue pages. 2972 */ 2973 for (i = 0; i < qedf->num_queues; i++) { 2974 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma); 2975 list++; 2976 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma); 2977 list++; 2978 *list = U64_LO(0); 2979 list++; 2980 *list = U64_HI(0); 2981 list++; 2982 } 2983 2984 return 0; 2985 2986 mem_alloc_failure: 2987 qedf_free_global_queues(qedf); 2988 return status; 2989 } 2990 2991 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf) 2992 { 2993 u8 sq_num_pbl_pages; 2994 u32 sq_mem_size; 2995 u32 cq_mem_size; 2996 u32 cq_num_entries; 2997 int rval; 2998 2999 /* 3000 * The number of completion queues/fastpath interrupts/status blocks 3001 * we allocation is the minimum off: 3002 * 3003 * Number of CPUs 3004 * Number allocated by qed for our PCI function 3005 */ 3006 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf); 3007 3008 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n", 3009 qedf->num_queues); 3010 3011 qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev, 3012 qedf->num_queues * sizeof(struct qedf_glbl_q_params), 3013 &qedf->hw_p_cpuq, GFP_KERNEL); 3014 3015 if (!qedf->p_cpuq) { 3016 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n"); 3017 return 1; 3018 } 3019 3020 rval = qedf_alloc_global_queues(qedf); 3021 if (rval) { 3022 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation " 3023 "failed.\n"); 3024 return 1; 3025 } 3026 3027 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */ 3028 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 3029 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE); 3030 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE); 3031 3032 /* Calculate CQ num entries */ 3033 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3034 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE); 3035 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe); 3036 3037 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params)); 3038 3039 /* Setup the value for fcoe PF */ 3040 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS; 3041 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS; 3042 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr = 3043 (u64)qedf->hw_p_cpuq; 3044 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages; 3045 3046 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0; 3047 3048 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries; 3049 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues; 3050 3051 /* log_page_size: 12 for 4KB pages */ 3052 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE); 3053 3054 qedf->pf_params.fcoe_pf_params.mtu = 9000; 3055 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI; 3056 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI; 3057 3058 /* BDQ address and size */ 3059 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] = 3060 qedf->bdq_pbl_list_dma; 3061 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] = 3062 qedf->bdq_pbl_list_num_entries; 3063 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE; 3064 3065 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3066 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n", 3067 qedf->bdq_pbl_list, 3068 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0], 3069 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]); 3070 3071 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3072 "cq_num_entries=%d.\n", 3073 qedf->pf_params.fcoe_pf_params.cq_num_entries); 3074 3075 return 0; 3076 } 3077 3078 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 3079 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf) 3080 { 3081 size_t size = 0; 3082 3083 if (qedf->p_cpuq) { 3084 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params); 3085 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq, 3086 qedf->hw_p_cpuq); 3087 } 3088 3089 qedf_free_global_queues(qedf); 3090 3091 kfree(qedf->global_queues); 3092 } 3093 3094 /* 3095 * PCI driver functions 3096 */ 3097 3098 static const struct pci_device_id qedf_pci_tbl[] = { 3099 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) }, 3100 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) }, 3101 {0} 3102 }; 3103 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl); 3104 3105 static struct pci_driver qedf_pci_driver = { 3106 .name = QEDF_MODULE_NAME, 3107 .id_table = qedf_pci_tbl, 3108 .probe = qedf_probe, 3109 .remove = qedf_remove, 3110 }; 3111 3112 static int __qedf_probe(struct pci_dev *pdev, int mode) 3113 { 3114 int rc = -EINVAL; 3115 struct fc_lport *lport; 3116 struct qedf_ctx *qedf; 3117 struct Scsi_Host *host; 3118 bool is_vf = false; 3119 struct qed_ll2_params params; 3120 char host_buf[20]; 3121 struct qed_link_params link_params; 3122 int status; 3123 void *task_start, *task_end; 3124 struct qed_slowpath_params slowpath_params; 3125 struct qed_probe_params qed_params; 3126 u16 tmp; 3127 3128 /* 3129 * When doing error recovery we didn't reap the lport so don't try 3130 * to reallocate it. 3131 */ 3132 if (mode != QEDF_MODE_RECOVERY) { 3133 lport = libfc_host_alloc(&qedf_host_template, 3134 sizeof(struct qedf_ctx)); 3135 3136 if (!lport) { 3137 QEDF_ERR(NULL, "Could not allocate lport.\n"); 3138 rc = -ENOMEM; 3139 goto err0; 3140 } 3141 3142 fc_disc_init(lport); 3143 3144 /* Initialize qedf_ctx */ 3145 qedf = lport_priv(lport); 3146 qedf->lport = lport; 3147 qedf->ctlr.lp = lport; 3148 qedf->pdev = pdev; 3149 qedf->dbg_ctx.pdev = pdev; 3150 qedf->dbg_ctx.host_no = lport->host->host_no; 3151 spin_lock_init(&qedf->hba_lock); 3152 INIT_LIST_HEAD(&qedf->fcports); 3153 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1; 3154 atomic_set(&qedf->num_offloads, 0); 3155 qedf->stop_io_on_error = false; 3156 pci_set_drvdata(pdev, qedf); 3157 init_completion(&qedf->fipvlan_compl); 3158 mutex_init(&qedf->stats_mutex); 3159 mutex_init(&qedf->flush_mutex); 3160 3161 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, 3162 "QLogic FastLinQ FCoE Module qedf %s, " 3163 "FW %d.%d.%d.%d\n", QEDF_VERSION, 3164 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 3165 FW_ENGINEERING_VERSION); 3166 } else { 3167 /* Init pointers during recovery */ 3168 qedf = pci_get_drvdata(pdev); 3169 lport = qedf->lport; 3170 } 3171 3172 host = lport->host; 3173 3174 /* Allocate mempool for qedf_io_work structs */ 3175 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN, 3176 qedf_io_work_cache); 3177 if (qedf->io_mempool == NULL) { 3178 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n"); 3179 goto err1; 3180 } 3181 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n", 3182 qedf->io_mempool); 3183 3184 sprintf(host_buf, "qedf_%u_link", 3185 qedf->lport->host->host_no); 3186 qedf->link_update_wq = create_workqueue(host_buf); 3187 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update); 3188 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery); 3189 INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump); 3190 qedf->fipvlan_retries = qedf_fipvlan_retries; 3191 /* Set a default prio in case DCBX doesn't converge */ 3192 if (qedf_default_prio > -1) { 3193 /* 3194 * This is the case where we pass a modparam in so we want to 3195 * honor it even if dcbx doesn't converge. 3196 */ 3197 qedf->prio = qedf_default_prio; 3198 } else 3199 qedf->prio = QEDF_DEFAULT_PRIO; 3200 3201 /* 3202 * Common probe. Takes care of basic hardware init and pci_* 3203 * functions. 3204 */ 3205 memset(&qed_params, 0, sizeof(qed_params)); 3206 qed_params.protocol = QED_PROTOCOL_FCOE; 3207 qed_params.dp_module = qedf_dp_module; 3208 qed_params.dp_level = qedf_dp_level; 3209 qed_params.is_vf = is_vf; 3210 qedf->cdev = qed_ops->common->probe(pdev, &qed_params); 3211 if (!qedf->cdev) { 3212 rc = -ENODEV; 3213 goto err1; 3214 } 3215 3216 /* Learn information crucial for qedf to progress */ 3217 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3218 if (rc) { 3219 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n"); 3220 goto err1; 3221 } 3222 3223 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 3224 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n", 3225 qedf->dev_info.common.num_hwfns, 3226 qed_ops->common->get_affin_hwfn_idx(qedf->cdev)); 3227 3228 /* queue allocation code should come here 3229 * order should be 3230 * slowpath_start 3231 * status block allocation 3232 * interrupt registration (to get min number of queues) 3233 * set_fcoe_pf_param 3234 * qed_sp_fcoe_func_start 3235 */ 3236 rc = qedf_set_fcoe_pf_param(qedf); 3237 if (rc) { 3238 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n"); 3239 goto err2; 3240 } 3241 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3242 3243 /* Record BDQ producer doorbell addresses */ 3244 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr; 3245 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr; 3246 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3247 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod, 3248 qedf->bdq_secondary_prod); 3249 3250 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf); 3251 3252 rc = qedf_prepare_sb(qedf); 3253 if (rc) { 3254 3255 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3256 goto err2; 3257 } 3258 3259 /* Start the Slowpath-process */ 3260 slowpath_params.int_mode = QED_INT_MODE_MSIX; 3261 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER; 3262 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER; 3263 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER; 3264 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER; 3265 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE); 3266 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params); 3267 if (rc) { 3268 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3269 goto err2; 3270 } 3271 3272 /* 3273 * update_pf_params needs to be called before and after slowpath 3274 * start 3275 */ 3276 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3277 3278 /* Setup interrupts */ 3279 rc = qedf_setup_int(qedf); 3280 if (rc) 3281 goto err3; 3282 3283 rc = qed_ops->start(qedf->cdev, &qedf->tasks); 3284 if (rc) { 3285 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n"); 3286 goto err4; 3287 } 3288 task_start = qedf_get_task_mem(&qedf->tasks, 0); 3289 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1); 3290 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, " 3291 "end=%p block_size=%u.\n", task_start, task_end, 3292 qedf->tasks.size); 3293 3294 /* 3295 * We need to write the number of BDs in the BDQ we've preallocated so 3296 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 3297 * packet arrives. 3298 */ 3299 qedf->bdq_prod_idx = QEDF_BDQ_SIZE; 3300 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3301 "Writing %d to primary and secondary BDQ doorbell registers.\n", 3302 qedf->bdq_prod_idx); 3303 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod); 3304 tmp = readw(qedf->bdq_primary_prod); 3305 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod); 3306 tmp = readw(qedf->bdq_secondary_prod); 3307 3308 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3309 3310 /* Now that the dev_info struct has been filled in set the MAC 3311 * address 3312 */ 3313 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac); 3314 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n", 3315 qedf->mac); 3316 3317 /* 3318 * Set the WWNN and WWPN in the following way: 3319 * 3320 * If the info we get from qed is non-zero then use that to set the 3321 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based 3322 * on the MAC address. 3323 */ 3324 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) { 3325 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3326 "Setting WWPN and WWNN from qed dev_info.\n"); 3327 qedf->wwnn = qedf->dev_info.wwnn; 3328 qedf->wwpn = qedf->dev_info.wwpn; 3329 } else { 3330 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3331 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n"); 3332 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0); 3333 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0); 3334 } 3335 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx " 3336 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn); 3337 3338 sprintf(host_buf, "host_%d", host->host_no); 3339 qed_ops->common->set_name(qedf->cdev, host_buf); 3340 3341 /* Allocate cmd mgr */ 3342 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf); 3343 if (!qedf->cmd_mgr) { 3344 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n"); 3345 rc = -ENOMEM; 3346 goto err5; 3347 } 3348 3349 if (mode != QEDF_MODE_RECOVERY) { 3350 host->transportt = qedf_fc_transport_template; 3351 host->max_lun = qedf_max_lun; 3352 host->max_cmd_len = QEDF_MAX_CDB_LEN; 3353 host->can_queue = FCOE_PARAMS_NUM_TASKS; 3354 rc = scsi_add_host(host, &pdev->dev); 3355 if (rc) { 3356 QEDF_WARN(&qedf->dbg_ctx, 3357 "Error adding Scsi_Host rc=0x%x.\n", rc); 3358 goto err6; 3359 } 3360 } 3361 3362 memset(¶ms, 0, sizeof(params)); 3363 params.mtu = 9000; 3364 ether_addr_copy(params.ll2_mac_address, qedf->mac); 3365 3366 /* Start LL2 processing thread */ 3367 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no); 3368 qedf->ll2_recv_wq = 3369 create_workqueue(host_buf); 3370 if (!qedf->ll2_recv_wq) { 3371 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n"); 3372 rc = -ENOMEM; 3373 goto err7; 3374 } 3375 3376 #ifdef CONFIG_DEBUG_FS 3377 qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops, 3378 qedf_dbg_fops); 3379 #endif 3380 3381 /* Start LL2 */ 3382 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf); 3383 rc = qed_ops->ll2->start(qedf->cdev, ¶ms); 3384 if (rc) { 3385 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n"); 3386 goto err7; 3387 } 3388 set_bit(QEDF_LL2_STARTED, &qedf->flags); 3389 3390 /* Set initial FIP/FCoE VLAN to NULL */ 3391 qedf->vlan_id = 0; 3392 3393 /* 3394 * No need to setup fcoe_ctlr or fc_lport objects during recovery since 3395 * they were not reaped during the unload process. 3396 */ 3397 if (mode != QEDF_MODE_RECOVERY) { 3398 /* Setup imbedded fcoe controller */ 3399 qedf_fcoe_ctlr_setup(qedf); 3400 3401 /* Setup lport */ 3402 rc = qedf_lport_setup(qedf); 3403 if (rc) { 3404 QEDF_ERR(&(qedf->dbg_ctx), 3405 "qedf_lport_setup failed.\n"); 3406 goto err7; 3407 } 3408 } 3409 3410 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no); 3411 qedf->timer_work_queue = 3412 create_workqueue(host_buf); 3413 if (!qedf->timer_work_queue) { 3414 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer " 3415 "workqueue.\n"); 3416 rc = -ENOMEM; 3417 goto err7; 3418 } 3419 3420 /* DPC workqueue is not reaped during recovery unload */ 3421 if (mode != QEDF_MODE_RECOVERY) { 3422 sprintf(host_buf, "qedf_%u_dpc", 3423 qedf->lport->host->host_no); 3424 qedf->dpc_wq = create_workqueue(host_buf); 3425 } 3426 3427 /* 3428 * GRC dump and sysfs parameters are not reaped during the recovery 3429 * unload process. 3430 */ 3431 if (mode != QEDF_MODE_RECOVERY) { 3432 qedf->grcdump_size = 3433 qed_ops->common->dbg_all_data_size(qedf->cdev); 3434 if (qedf->grcdump_size) { 3435 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump, 3436 qedf->grcdump_size); 3437 if (rc) { 3438 QEDF_ERR(&(qedf->dbg_ctx), 3439 "GRC Dump buffer alloc failed.\n"); 3440 qedf->grcdump = NULL; 3441 } 3442 3443 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3444 "grcdump: addr=%p, size=%u.\n", 3445 qedf->grcdump, qedf->grcdump_size); 3446 } 3447 qedf_create_sysfs_ctx_attr(qedf); 3448 3449 /* Initialize I/O tracing for this adapter */ 3450 spin_lock_init(&qedf->io_trace_lock); 3451 qedf->io_trace_idx = 0; 3452 } 3453 3454 init_completion(&qedf->flogi_compl); 3455 3456 status = qed_ops->common->update_drv_state(qedf->cdev, true); 3457 if (status) 3458 QEDF_ERR(&(qedf->dbg_ctx), 3459 "Failed to send drv state to MFW.\n"); 3460 3461 memset(&link_params, 0, sizeof(struct qed_link_params)); 3462 link_params.link_up = true; 3463 status = qed_ops->common->set_link(qedf->cdev, &link_params); 3464 if (status) 3465 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n"); 3466 3467 /* Start/restart discovery */ 3468 if (mode == QEDF_MODE_RECOVERY) 3469 fcoe_ctlr_link_up(&qedf->ctlr); 3470 else 3471 fc_fabric_login(lport); 3472 3473 /* All good */ 3474 return 0; 3475 3476 err7: 3477 if (qedf->ll2_recv_wq) 3478 destroy_workqueue(qedf->ll2_recv_wq); 3479 fc_remove_host(qedf->lport->host); 3480 scsi_remove_host(qedf->lport->host); 3481 #ifdef CONFIG_DEBUG_FS 3482 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3483 #endif 3484 err6: 3485 qedf_cmd_mgr_free(qedf->cmd_mgr); 3486 err5: 3487 qed_ops->stop(qedf->cdev); 3488 err4: 3489 qedf_free_fcoe_pf_param(qedf); 3490 qedf_sync_free_irqs(qedf); 3491 err3: 3492 qed_ops->common->slowpath_stop(qedf->cdev); 3493 err2: 3494 qed_ops->common->remove(qedf->cdev); 3495 err1: 3496 scsi_host_put(lport->host); 3497 err0: 3498 return rc; 3499 } 3500 3501 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id) 3502 { 3503 return __qedf_probe(pdev, QEDF_MODE_NORMAL); 3504 } 3505 3506 static void __qedf_remove(struct pci_dev *pdev, int mode) 3507 { 3508 struct qedf_ctx *qedf; 3509 int rc; 3510 3511 if (!pdev) { 3512 QEDF_ERR(NULL, "pdev is NULL.\n"); 3513 return; 3514 } 3515 3516 qedf = pci_get_drvdata(pdev); 3517 3518 /* 3519 * Prevent race where we're in board disable work and then try to 3520 * rmmod the module. 3521 */ 3522 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 3523 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n"); 3524 return; 3525 } 3526 3527 if (mode != QEDF_MODE_RECOVERY) 3528 set_bit(QEDF_UNLOADING, &qedf->flags); 3529 3530 /* Logoff the fabric to upload all connections */ 3531 if (mode == QEDF_MODE_RECOVERY) 3532 fcoe_ctlr_link_down(&qedf->ctlr); 3533 else 3534 fc_fabric_logoff(qedf->lport); 3535 3536 if (qedf_wait_for_upload(qedf) == false) 3537 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 3538 3539 #ifdef CONFIG_DEBUG_FS 3540 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3541 #endif 3542 3543 /* Stop any link update handling */ 3544 cancel_delayed_work_sync(&qedf->link_update); 3545 destroy_workqueue(qedf->link_update_wq); 3546 qedf->link_update_wq = NULL; 3547 3548 if (qedf->timer_work_queue) 3549 destroy_workqueue(qedf->timer_work_queue); 3550 3551 /* Stop Light L2 */ 3552 clear_bit(QEDF_LL2_STARTED, &qedf->flags); 3553 qed_ops->ll2->stop(qedf->cdev); 3554 if (qedf->ll2_recv_wq) 3555 destroy_workqueue(qedf->ll2_recv_wq); 3556 3557 /* Stop fastpath */ 3558 qedf_sync_free_irqs(qedf); 3559 qedf_destroy_sb(qedf); 3560 3561 /* 3562 * During recovery don't destroy OS constructs that represent the 3563 * physical port. 3564 */ 3565 if (mode != QEDF_MODE_RECOVERY) { 3566 qedf_free_grc_dump_buf(&qedf->grcdump); 3567 qedf_remove_sysfs_ctx_attr(qedf); 3568 3569 /* Remove all SCSI/libfc/libfcoe structures */ 3570 fcoe_ctlr_destroy(&qedf->ctlr); 3571 fc_lport_destroy(qedf->lport); 3572 fc_remove_host(qedf->lport->host); 3573 scsi_remove_host(qedf->lport->host); 3574 } 3575 3576 qedf_cmd_mgr_free(qedf->cmd_mgr); 3577 3578 if (mode != QEDF_MODE_RECOVERY) { 3579 fc_exch_mgr_free(qedf->lport); 3580 fc_lport_free_stats(qedf->lport); 3581 3582 /* Wait for all vports to be reaped */ 3583 qedf_wait_for_vport_destroy(qedf); 3584 } 3585 3586 /* 3587 * Now that all connections have been uploaded we can stop the 3588 * rest of the qed operations 3589 */ 3590 qed_ops->stop(qedf->cdev); 3591 3592 if (mode != QEDF_MODE_RECOVERY) { 3593 if (qedf->dpc_wq) { 3594 /* Stop general DPC handling */ 3595 destroy_workqueue(qedf->dpc_wq); 3596 qedf->dpc_wq = NULL; 3597 } 3598 } 3599 3600 /* Final shutdown for the board */ 3601 qedf_free_fcoe_pf_param(qedf); 3602 if (mode != QEDF_MODE_RECOVERY) { 3603 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3604 pci_set_drvdata(pdev, NULL); 3605 } 3606 3607 rc = qed_ops->common->update_drv_state(qedf->cdev, false); 3608 if (rc) 3609 QEDF_ERR(&(qedf->dbg_ctx), 3610 "Failed to send drv state to MFW.\n"); 3611 3612 qed_ops->common->slowpath_stop(qedf->cdev); 3613 qed_ops->common->remove(qedf->cdev); 3614 3615 mempool_destroy(qedf->io_mempool); 3616 3617 /* Only reap the Scsi_host on a real removal */ 3618 if (mode != QEDF_MODE_RECOVERY) 3619 scsi_host_put(qedf->lport->host); 3620 } 3621 3622 static void qedf_remove(struct pci_dev *pdev) 3623 { 3624 /* Check to make sure this function wasn't already disabled */ 3625 if (!atomic_read(&pdev->enable_cnt)) 3626 return; 3627 3628 __qedf_remove(pdev, QEDF_MODE_NORMAL); 3629 } 3630 3631 void qedf_wq_grcdump(struct work_struct *work) 3632 { 3633 struct qedf_ctx *qedf = 3634 container_of(work, struct qedf_ctx, grcdump_work.work); 3635 3636 QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n"); 3637 qedf_capture_grc_dump(qedf); 3638 } 3639 3640 /* 3641 * Protocol TLV handler 3642 */ 3643 void qedf_get_protocol_tlv_data(void *dev, void *data) 3644 { 3645 struct qedf_ctx *qedf = dev; 3646 struct qed_mfw_tlv_fcoe *fcoe = data; 3647 struct fc_lport *lport = qedf->lport; 3648 struct Scsi_Host *host = lport->host; 3649 struct fc_host_attrs *fc_host = shost_to_fc_host(host); 3650 struct fc_host_statistics *hst; 3651 3652 /* Force a refresh of the fc_host stats including offload stats */ 3653 hst = qedf_fc_get_host_stats(host); 3654 3655 fcoe->qos_pri_set = true; 3656 fcoe->qos_pri = 3; /* Hard coded to 3 in driver */ 3657 3658 fcoe->ra_tov_set = true; 3659 fcoe->ra_tov = lport->r_a_tov; 3660 3661 fcoe->ed_tov_set = true; 3662 fcoe->ed_tov = lport->e_d_tov; 3663 3664 fcoe->npiv_state_set = true; 3665 fcoe->npiv_state = 1; /* NPIV always enabled */ 3666 3667 fcoe->num_npiv_ids_set = true; 3668 fcoe->num_npiv_ids = fc_host->npiv_vports_inuse; 3669 3670 /* Certain attributes we only want to set if we've selected an FCF */ 3671 if (qedf->ctlr.sel_fcf) { 3672 fcoe->switch_name_set = true; 3673 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name); 3674 } 3675 3676 fcoe->port_state_set = true; 3677 /* For qedf we're either link down or fabric attach */ 3678 if (lport->link_up) 3679 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC; 3680 else 3681 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE; 3682 3683 fcoe->link_failures_set = true; 3684 fcoe->link_failures = (u16)hst->link_failure_count; 3685 3686 fcoe->fcoe_txq_depth_set = true; 3687 fcoe->fcoe_rxq_depth_set = true; 3688 fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS; 3689 fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS; 3690 3691 fcoe->fcoe_rx_frames_set = true; 3692 fcoe->fcoe_rx_frames = hst->rx_frames; 3693 3694 fcoe->fcoe_tx_frames_set = true; 3695 fcoe->fcoe_tx_frames = hst->tx_frames; 3696 3697 fcoe->fcoe_rx_bytes_set = true; 3698 fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000; 3699 3700 fcoe->fcoe_tx_bytes_set = true; 3701 fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000; 3702 3703 fcoe->crc_count_set = true; 3704 fcoe->crc_count = hst->invalid_crc_count; 3705 3706 fcoe->tx_abts_set = true; 3707 fcoe->tx_abts = hst->fcp_packet_aborts; 3708 3709 fcoe->tx_lun_rst_set = true; 3710 fcoe->tx_lun_rst = qedf->lun_resets; 3711 3712 fcoe->abort_task_sets_set = true; 3713 fcoe->abort_task_sets = qedf->packet_aborts; 3714 3715 fcoe->scsi_busy_set = true; 3716 fcoe->scsi_busy = qedf->busy; 3717 3718 fcoe->scsi_tsk_full_set = true; 3719 fcoe->scsi_tsk_full = qedf->task_set_fulls; 3720 } 3721 3722 /* Generic TLV data callback */ 3723 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 3724 { 3725 struct qedf_ctx *qedf; 3726 3727 if (!dev) { 3728 QEDF_INFO(NULL, QEDF_LOG_EVT, 3729 "dev is NULL so ignoring get_generic_tlv_data request.\n"); 3730 return; 3731 } 3732 qedf = (struct qedf_ctx *)dev; 3733 3734 memset(data, 0, sizeof(struct qed_generic_tlvs)); 3735 ether_addr_copy(data->mac[0], qedf->mac); 3736 } 3737 3738 /* 3739 * Module Init/Remove 3740 */ 3741 3742 static int __init qedf_init(void) 3743 { 3744 int ret; 3745 3746 /* If debug=1 passed, set the default log mask */ 3747 if (qedf_debug == QEDF_LOG_DEFAULT) 3748 qedf_debug = QEDF_DEFAULT_LOG_MASK; 3749 3750 /* 3751 * Check that default prio for FIP/FCoE traffic is between 0..7 if a 3752 * value has been set 3753 */ 3754 if (qedf_default_prio > -1) 3755 if (qedf_default_prio > 7) { 3756 qedf_default_prio = QEDF_DEFAULT_PRIO; 3757 QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n", 3758 QEDF_DEFAULT_PRIO); 3759 } 3760 3761 /* Print driver banner */ 3762 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR, 3763 QEDF_VERSION); 3764 3765 /* Create kmem_cache for qedf_io_work structs */ 3766 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache", 3767 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL); 3768 if (qedf_io_work_cache == NULL) { 3769 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n"); 3770 goto err1; 3771 } 3772 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n", 3773 qedf_io_work_cache); 3774 3775 qed_ops = qed_get_fcoe_ops(); 3776 if (!qed_ops) { 3777 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n"); 3778 goto err1; 3779 } 3780 3781 #ifdef CONFIG_DEBUG_FS 3782 qedf_dbg_init("qedf"); 3783 #endif 3784 3785 qedf_fc_transport_template = 3786 fc_attach_transport(&qedf_fc_transport_fn); 3787 if (!qedf_fc_transport_template) { 3788 QEDF_ERR(NULL, "Could not register with FC transport\n"); 3789 goto err2; 3790 } 3791 3792 qedf_fc_vport_transport_template = 3793 fc_attach_transport(&qedf_fc_vport_transport_fn); 3794 if (!qedf_fc_vport_transport_template) { 3795 QEDF_ERR(NULL, "Could not register vport template with FC " 3796 "transport\n"); 3797 goto err3; 3798 } 3799 3800 qedf_io_wq = create_workqueue("qedf_io_wq"); 3801 if (!qedf_io_wq) { 3802 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n"); 3803 goto err4; 3804 } 3805 3806 qedf_cb_ops.get_login_failures = qedf_get_login_failures; 3807 3808 ret = pci_register_driver(&qedf_pci_driver); 3809 if (ret) { 3810 QEDF_ERR(NULL, "Failed to register driver\n"); 3811 goto err5; 3812 } 3813 3814 return 0; 3815 3816 err5: 3817 destroy_workqueue(qedf_io_wq); 3818 err4: 3819 fc_release_transport(qedf_fc_vport_transport_template); 3820 err3: 3821 fc_release_transport(qedf_fc_transport_template); 3822 err2: 3823 #ifdef CONFIG_DEBUG_FS 3824 qedf_dbg_exit(); 3825 #endif 3826 qed_put_fcoe_ops(); 3827 err1: 3828 return -EINVAL; 3829 } 3830 3831 static void __exit qedf_cleanup(void) 3832 { 3833 pci_unregister_driver(&qedf_pci_driver); 3834 3835 destroy_workqueue(qedf_io_wq); 3836 3837 fc_release_transport(qedf_fc_vport_transport_template); 3838 fc_release_transport(qedf_fc_transport_template); 3839 #ifdef CONFIG_DEBUG_FS 3840 qedf_dbg_exit(); 3841 #endif 3842 qed_put_fcoe_ops(); 3843 3844 kmem_cache_destroy(qedf_io_work_cache); 3845 } 3846 3847 MODULE_LICENSE("GPL"); 3848 MODULE_DESCRIPTION("QLogic QEDF 25/40/50/100Gb FCoE Driver"); 3849 MODULE_AUTHOR("QLogic Corporation"); 3850 MODULE_VERSION(QEDF_VERSION); 3851 module_init(qedf_init); 3852 module_exit(qedf_cleanup); 3853