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 <linux/phylink.h> 17 #include <scsi/libfc.h> 18 #include <scsi/scsi_host.h> 19 #include <scsi/fc_frame.h> 20 #include <linux/if_ether.h> 21 #include <linux/if_vlan.h> 22 #include <linux/cpu.h> 23 #include "qedf.h" 24 #include "qedf_dbg.h" 25 #include <uapi/linux/pci_regs.h> 26 27 const struct qed_fcoe_ops *qed_ops; 28 29 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id); 30 static void qedf_remove(struct pci_dev *pdev); 31 static void qedf_shutdown(struct pci_dev *pdev); 32 static void qedf_schedule_recovery_handler(void *dev); 33 static void qedf_recovery_handler(struct work_struct *work); 34 static int qedf_suspend(struct pci_dev *pdev, pm_message_t state); 35 36 /* 37 * Driver module parameters. 38 */ 39 static unsigned int qedf_dev_loss_tmo = 60; 40 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO); 41 MODULE_PARM_DESC(dev_loss_tmo, " dev_loss_tmo setting for attached " 42 "remote ports (default 60)"); 43 44 uint qedf_debug = QEDF_LOG_INFO; 45 module_param_named(debug, qedf_debug, uint, S_IRUGO|S_IWUSR); 46 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging" 47 " mask"); 48 49 static uint qedf_fipvlan_retries = 60; 50 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO); 51 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt " 52 "before giving up (default 60)"); 53 54 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN; 55 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO); 56 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails " 57 "(default 1002)."); 58 59 static int qedf_default_prio = -1; 60 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO); 61 MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE" 62 " traffic (value between 0 and 7, default 3)."); 63 64 uint qedf_dump_frames; 65 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR); 66 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames " 67 "(default off)"); 68 69 static uint qedf_queue_depth; 70 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO); 71 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered " 72 "by the qedf driver. Default is 0 (use OS default)."); 73 74 uint qedf_io_tracing; 75 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR); 76 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions " 77 "into trace buffer. (default off)."); 78 79 static uint qedf_max_lun = MAX_FIBRE_LUNS; 80 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO); 81 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver " 82 "supports. (default 0xffffffff)"); 83 84 uint qedf_link_down_tmo; 85 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO); 86 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the " 87 "link is down by N seconds."); 88 89 bool qedf_retry_delay; 90 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR); 91 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry " 92 "delay handling (default off)."); 93 94 static bool qedf_dcbx_no_wait; 95 module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR); 96 MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start " 97 "sending FIP VLAN requests on link up (Default: off)."); 98 99 static uint qedf_dp_module; 100 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO); 101 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed " 102 "qed module during probe."); 103 104 static uint qedf_dp_level = QED_LEVEL_NOTICE; 105 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO); 106 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module " 107 "during probe (0-3: 0 more verbose)."); 108 109 static bool qedf_enable_recovery = true; 110 module_param_named(enable_recovery, qedf_enable_recovery, 111 bool, S_IRUGO | S_IWUSR); 112 MODULE_PARM_DESC(enable_recovery, "Enable/disable recovery on driver/firmware " 113 "interface level errors 0 = Disabled, 1 = Enabled (Default: 1)."); 114 115 struct workqueue_struct *qedf_io_wq; 116 117 static struct fcoe_percpu_s qedf_global; 118 static DEFINE_SPINLOCK(qedf_global_lock); 119 120 static struct kmem_cache *qedf_io_work_cache; 121 122 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id) 123 { 124 int vlan_id_tmp = 0; 125 126 vlan_id_tmp = vlan_id | (qedf->prio << VLAN_PRIO_SHIFT); 127 qedf->vlan_id = vlan_id_tmp; 128 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 129 "Setting vlan_id=0x%04x prio=%d.\n", 130 vlan_id_tmp, qedf->prio); 131 } 132 133 /* Returns true if we have a valid vlan, false otherwise */ 134 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf) 135 { 136 137 while (qedf->fipvlan_retries--) { 138 /* This is to catch if link goes down during fipvlan retries */ 139 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 140 QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n"); 141 return false; 142 } 143 144 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 145 QEDF_ERR(&qedf->dbg_ctx, "Driver unloading.\n"); 146 return false; 147 } 148 149 if (qedf->vlan_id > 0) { 150 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 151 "vlan = 0x%x already set, calling ctlr_link_up.\n", 152 qedf->vlan_id); 153 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) 154 fcoe_ctlr_link_up(&qedf->ctlr); 155 return true; 156 } 157 158 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 159 "Retry %d.\n", qedf->fipvlan_retries); 160 init_completion(&qedf->fipvlan_compl); 161 qedf_fcoe_send_vlan_req(qedf); 162 wait_for_completion_timeout(&qedf->fipvlan_compl, 1 * HZ); 163 } 164 165 return false; 166 } 167 168 static void qedf_handle_link_update(struct work_struct *work) 169 { 170 struct qedf_ctx *qedf = 171 container_of(work, struct qedf_ctx, link_update.work); 172 int rc; 173 174 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n", 175 atomic_read(&qedf->link_state)); 176 177 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 178 rc = qedf_initiate_fipvlan_req(qedf); 179 if (rc) 180 return; 181 182 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 183 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 184 "Link is down, resetting vlan_id.\n"); 185 qedf->vlan_id = 0; 186 return; 187 } 188 189 /* 190 * If we get here then we never received a repsonse to our 191 * fip vlan request so set the vlan_id to the default and 192 * tell FCoE that the link is up 193 */ 194 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN " 195 "response, falling back to default VLAN %d.\n", 196 qedf_fallback_vlan); 197 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 198 199 /* 200 * Zero out data_src_addr so we'll update it with the new 201 * lport port_id 202 */ 203 eth_zero_addr(qedf->data_src_addr); 204 fcoe_ctlr_link_up(&qedf->ctlr); 205 } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 206 /* 207 * If we hit here and link_down_tmo_valid is still 1 it means 208 * that link_down_tmo timed out so set it to 0 to make sure any 209 * other readers have accurate state. 210 */ 211 atomic_set(&qedf->link_down_tmo_valid, 0); 212 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 213 "Calling fcoe_ctlr_link_down().\n"); 214 fcoe_ctlr_link_down(&qedf->ctlr); 215 if (qedf_wait_for_upload(qedf) == false) 216 QEDF_ERR(&qedf->dbg_ctx, 217 "Could not upload all sessions.\n"); 218 /* Reset the number of FIP VLAN retries */ 219 qedf->fipvlan_retries = qedf_fipvlan_retries; 220 } 221 } 222 223 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1 224 #define QEDF_FCOE_MAC_METHOD_FCF_MAP 2 225 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3 226 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp) 227 { 228 u8 *granted_mac; 229 struct fc_frame_header *fh = fc_frame_header_get(fp); 230 u8 fc_map[3]; 231 int method = 0; 232 233 /* Get granted MAC address from FIP FLOGI payload */ 234 granted_mac = fr_cb(fp)->granted_mac; 235 236 /* 237 * We set the source MAC for FCoE traffic based on the Granted MAC 238 * address from the switch. 239 * 240 * If granted_mac is non-zero, we used that. 241 * If the granted_mac is zeroed out, created the FCoE MAC based on 242 * the sel_fcf->fc_map and the d_id fo the FLOGI frame. 243 * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the 244 * d_id of the FLOGI frame. 245 */ 246 if (!is_zero_ether_addr(granted_mac)) { 247 ether_addr_copy(qedf->data_src_addr, granted_mac); 248 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC; 249 } else if (qedf->ctlr.sel_fcf->fc_map != 0) { 250 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map); 251 qedf->data_src_addr[0] = fc_map[0]; 252 qedf->data_src_addr[1] = fc_map[1]; 253 qedf->data_src_addr[2] = fc_map[2]; 254 qedf->data_src_addr[3] = fh->fh_d_id[0]; 255 qedf->data_src_addr[4] = fh->fh_d_id[1]; 256 qedf->data_src_addr[5] = fh->fh_d_id[2]; 257 method = QEDF_FCOE_MAC_METHOD_FCF_MAP; 258 } else { 259 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id); 260 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC; 261 } 262 263 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 264 "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method); 265 } 266 267 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp, 268 void *arg) 269 { 270 struct fc_exch *exch = fc_seq_exch(seq); 271 struct fc_lport *lport = exch->lp; 272 struct qedf_ctx *qedf = lport_priv(lport); 273 274 if (!qedf) { 275 QEDF_ERR(NULL, "qedf is NULL.\n"); 276 return; 277 } 278 279 /* 280 * If ERR_PTR is set then don't try to stat anything as it will cause 281 * a crash when we access fp. 282 */ 283 if (IS_ERR(fp)) { 284 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 285 "fp has IS_ERR() set.\n"); 286 goto skip_stat; 287 } 288 289 /* Log stats for FLOGI reject */ 290 if (fc_frame_payload_op(fp) == ELS_LS_RJT) 291 qedf->flogi_failed++; 292 else if (fc_frame_payload_op(fp) == ELS_LS_ACC) { 293 /* Set the source MAC we will use for FCoE traffic */ 294 qedf_set_data_src_addr(qedf, fp); 295 qedf->flogi_pending = 0; 296 } 297 298 /* Complete flogi_compl so we can proceed to sending ADISCs */ 299 complete(&qedf->flogi_compl); 300 301 skip_stat: 302 /* Report response to libfc */ 303 fc_lport_flogi_resp(seq, fp, lport); 304 } 305 306 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did, 307 struct fc_frame *fp, unsigned int op, 308 void (*resp)(struct fc_seq *, 309 struct fc_frame *, 310 void *), 311 void *arg, u32 timeout) 312 { 313 struct qedf_ctx *qedf = lport_priv(lport); 314 315 /* 316 * Intercept FLOGI for statistic purposes. Note we use the resp 317 * callback to tell if this is really a flogi. 318 */ 319 if (resp == fc_lport_flogi_resp) { 320 qedf->flogi_cnt++; 321 if (qedf->flogi_pending >= QEDF_FLOGI_RETRY_CNT) { 322 schedule_delayed_work(&qedf->stag_work, 2); 323 return NULL; 324 } 325 qedf->flogi_pending++; 326 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp, 327 arg, timeout); 328 } 329 330 return fc_elsct_send(lport, did, fp, op, resp, arg, timeout); 331 } 332 333 int qedf_send_flogi(struct qedf_ctx *qedf) 334 { 335 struct fc_lport *lport; 336 struct fc_frame *fp; 337 338 lport = qedf->lport; 339 340 if (!lport->tt.elsct_send) { 341 QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n"); 342 return -EINVAL; 343 } 344 345 fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); 346 if (!fp) { 347 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n"); 348 return -ENOMEM; 349 } 350 351 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 352 "Sending FLOGI to reestablish session with switch.\n"); 353 lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, 354 ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov); 355 356 init_completion(&qedf->flogi_compl); 357 358 return 0; 359 } 360 361 /* 362 * This function is called if link_down_tmo is in use. If we get a link up and 363 * link_down_tmo has not expired then use just FLOGI/ADISC to recover our 364 * sessions with targets. Otherwise, just call fcoe_ctlr_link_up(). 365 */ 366 static void qedf_link_recovery(struct work_struct *work) 367 { 368 struct qedf_ctx *qedf = 369 container_of(work, struct qedf_ctx, link_recovery.work); 370 struct fc_lport *lport = qedf->lport; 371 struct fc_rport_priv *rdata; 372 bool rc; 373 int retries = 30; 374 int rval, i; 375 struct list_head rdata_login_list; 376 377 INIT_LIST_HEAD(&rdata_login_list); 378 379 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 380 "Link down tmo did not expire.\n"); 381 382 /* 383 * Essentially reset the fcoe_ctlr here without affecting the state 384 * of the libfc structs. 385 */ 386 qedf->ctlr.state = FIP_ST_LINK_WAIT; 387 fcoe_ctlr_link_down(&qedf->ctlr); 388 389 /* 390 * Bring the link up before we send the fipvlan request so libfcoe 391 * can select a new fcf in parallel 392 */ 393 fcoe_ctlr_link_up(&qedf->ctlr); 394 395 /* Since the link when down and up to verify which vlan we're on */ 396 qedf->fipvlan_retries = qedf_fipvlan_retries; 397 rc = qedf_initiate_fipvlan_req(qedf); 398 /* If getting the VLAN fails, set the VLAN to the fallback one */ 399 if (!rc) 400 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 401 402 /* 403 * We need to wait for an FCF to be selected due to the 404 * fcoe_ctlr_link_up other the FLOGI will be rejected. 405 */ 406 while (retries > 0) { 407 if (qedf->ctlr.sel_fcf) { 408 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 409 "FCF reselected, proceeding with FLOGI.\n"); 410 break; 411 } 412 msleep(500); 413 retries--; 414 } 415 416 if (retries < 1) { 417 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for " 418 "FCF selection.\n"); 419 return; 420 } 421 422 rval = qedf_send_flogi(qedf); 423 if (rval) 424 return; 425 426 /* Wait for FLOGI completion before proceeding with sending ADISCs */ 427 i = wait_for_completion_timeout(&qedf->flogi_compl, 428 qedf->lport->r_a_tov); 429 if (i == 0) { 430 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n"); 431 return; 432 } 433 434 /* 435 * Call lport->tt.rport_login which will cause libfc to send an 436 * ADISC since the rport is in state ready. 437 */ 438 mutex_lock(&lport->disc.disc_mutex); 439 list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) { 440 if (kref_get_unless_zero(&rdata->kref)) { 441 fc_rport_login(rdata); 442 kref_put(&rdata->kref, fc_rport_destroy); 443 } 444 } 445 mutex_unlock(&lport->disc.disc_mutex); 446 } 447 448 static void qedf_update_link_speed(struct qedf_ctx *qedf, 449 struct qed_link_output *link) 450 { 451 __ETHTOOL_DECLARE_LINK_MODE_MASK(sup_caps); 452 struct fc_lport *lport = qedf->lport; 453 454 lport->link_speed = FC_PORTSPEED_UNKNOWN; 455 lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN; 456 457 /* Set fc_host link speed */ 458 switch (link->speed) { 459 case 10000: 460 lport->link_speed = FC_PORTSPEED_10GBIT; 461 break; 462 case 25000: 463 lport->link_speed = FC_PORTSPEED_25GBIT; 464 break; 465 case 40000: 466 lport->link_speed = FC_PORTSPEED_40GBIT; 467 break; 468 case 50000: 469 lport->link_speed = FC_PORTSPEED_50GBIT; 470 break; 471 case 100000: 472 lport->link_speed = FC_PORTSPEED_100GBIT; 473 break; 474 case 20000: 475 lport->link_speed = FC_PORTSPEED_20GBIT; 476 break; 477 default: 478 lport->link_speed = FC_PORTSPEED_UNKNOWN; 479 break; 480 } 481 482 /* 483 * Set supported link speed by querying the supported 484 * capabilities of the link. 485 */ 486 487 phylink_zero(sup_caps); 488 phylink_set(sup_caps, 10000baseT_Full); 489 phylink_set(sup_caps, 10000baseKX4_Full); 490 phylink_set(sup_caps, 10000baseR_FEC); 491 phylink_set(sup_caps, 10000baseCR_Full); 492 phylink_set(sup_caps, 10000baseSR_Full); 493 phylink_set(sup_caps, 10000baseLR_Full); 494 phylink_set(sup_caps, 10000baseLRM_Full); 495 phylink_set(sup_caps, 10000baseKR_Full); 496 497 if (linkmode_intersects(link->supported_caps, sup_caps)) 498 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT; 499 500 phylink_zero(sup_caps); 501 phylink_set(sup_caps, 25000baseKR_Full); 502 phylink_set(sup_caps, 25000baseCR_Full); 503 phylink_set(sup_caps, 25000baseSR_Full); 504 505 if (linkmode_intersects(link->supported_caps, sup_caps)) 506 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT; 507 508 phylink_zero(sup_caps); 509 phylink_set(sup_caps, 40000baseLR4_Full); 510 phylink_set(sup_caps, 40000baseKR4_Full); 511 phylink_set(sup_caps, 40000baseCR4_Full); 512 phylink_set(sup_caps, 40000baseSR4_Full); 513 514 if (linkmode_intersects(link->supported_caps, sup_caps)) 515 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT; 516 517 phylink_zero(sup_caps); 518 phylink_set(sup_caps, 50000baseKR2_Full); 519 phylink_set(sup_caps, 50000baseCR2_Full); 520 phylink_set(sup_caps, 50000baseSR2_Full); 521 522 if (linkmode_intersects(link->supported_caps, sup_caps)) 523 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT; 524 525 phylink_zero(sup_caps); 526 phylink_set(sup_caps, 100000baseKR4_Full); 527 phylink_set(sup_caps, 100000baseSR4_Full); 528 phylink_set(sup_caps, 100000baseCR4_Full); 529 phylink_set(sup_caps, 100000baseLR4_ER4_Full); 530 531 if (linkmode_intersects(link->supported_caps, sup_caps)) 532 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT; 533 534 phylink_zero(sup_caps); 535 phylink_set(sup_caps, 20000baseKR2_Full); 536 537 if (linkmode_intersects(link->supported_caps, sup_caps)) 538 lport->link_supported_speeds |= FC_PORTSPEED_20GBIT; 539 540 if (lport->host && lport->host->shost_data) 541 fc_host_supported_speeds(lport->host) = 542 lport->link_supported_speeds; 543 } 544 545 static void qedf_bw_update(void *dev) 546 { 547 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 548 struct qed_link_output link; 549 550 /* Get the latest status of the link */ 551 qed_ops->common->get_link(qedf->cdev, &link); 552 553 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 554 QEDF_ERR(&qedf->dbg_ctx, 555 "Ignore link update, driver getting unload.\n"); 556 return; 557 } 558 559 if (link.link_up) { 560 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) 561 qedf_update_link_speed(qedf, &link); 562 else 563 QEDF_ERR(&qedf->dbg_ctx, 564 "Ignore bw update, link is down.\n"); 565 566 } else { 567 QEDF_ERR(&qedf->dbg_ctx, "link_up is not set.\n"); 568 } 569 } 570 571 static void qedf_link_update(void *dev, struct qed_link_output *link) 572 { 573 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 574 575 /* 576 * Prevent race where we're removing the module and we get link update 577 * for qed. 578 */ 579 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 580 QEDF_ERR(&qedf->dbg_ctx, 581 "Ignore link update, driver getting unload.\n"); 582 return; 583 } 584 585 if (link->link_up) { 586 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 587 QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC, 588 "Ignoring link up event as link is already up.\n"); 589 return; 590 } 591 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n", 592 link->speed / 1000); 593 594 /* Cancel any pending link down work */ 595 cancel_delayed_work(&qedf->link_update); 596 597 atomic_set(&qedf->link_state, QEDF_LINK_UP); 598 qedf_update_link_speed(qedf, link); 599 600 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE || 601 qedf_dcbx_no_wait) { 602 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 603 "DCBx done.\n"); 604 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 605 queue_delayed_work(qedf->link_update_wq, 606 &qedf->link_recovery, 0); 607 else 608 queue_delayed_work(qedf->link_update_wq, 609 &qedf->link_update, 0); 610 atomic_set(&qedf->link_down_tmo_valid, 0); 611 } 612 613 } else { 614 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n"); 615 616 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 617 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 618 /* 619 * Flag that we're waiting for the link to come back up before 620 * informing the fcoe layer of the event. 621 */ 622 if (qedf_link_down_tmo > 0) { 623 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 624 "Starting link down tmo.\n"); 625 atomic_set(&qedf->link_down_tmo_valid, 1); 626 } 627 qedf->vlan_id = 0; 628 qedf_update_link_speed(qedf, link); 629 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 630 qedf_link_down_tmo * HZ); 631 } 632 } 633 634 635 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type) 636 { 637 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 638 u8 tmp_prio; 639 640 QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe " 641 "prio=%d.\n", get->operational.valid, get->operational.enabled, 642 get->operational.app_prio.fcoe); 643 644 if (get->operational.enabled && get->operational.valid) { 645 /* If DCBX was already negotiated on link up then just exit */ 646 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) { 647 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 648 "DCBX already set on link up.\n"); 649 return; 650 } 651 652 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE); 653 654 /* 655 * Set the 8021q priority in the following manner: 656 * 657 * 1. If a modparam is set use that 658 * 2. If the value is not between 0..7 use the default 659 * 3. Use the priority we get from the DCBX app tag 660 */ 661 tmp_prio = get->operational.app_prio.fcoe; 662 if (qedf_default_prio > -1) 663 qedf->prio = qedf_default_prio; 664 else if (tmp_prio > 7) { 665 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 666 "FIP/FCoE prio %d out of range, setting to %d.\n", 667 tmp_prio, QEDF_DEFAULT_PRIO); 668 qedf->prio = QEDF_DEFAULT_PRIO; 669 } else 670 qedf->prio = tmp_prio; 671 672 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP && 673 !qedf_dcbx_no_wait) { 674 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 675 queue_delayed_work(qedf->link_update_wq, 676 &qedf->link_recovery, 0); 677 else 678 queue_delayed_work(qedf->link_update_wq, 679 &qedf->link_update, 0); 680 atomic_set(&qedf->link_down_tmo_valid, 0); 681 } 682 } 683 684 } 685 686 static u32 qedf_get_login_failures(void *cookie) 687 { 688 struct qedf_ctx *qedf; 689 690 qedf = (struct qedf_ctx *)cookie; 691 return qedf->flogi_failed; 692 } 693 694 static struct qed_fcoe_cb_ops qedf_cb_ops = { 695 { 696 .link_update = qedf_link_update, 697 .bw_update = qedf_bw_update, 698 .schedule_recovery_handler = qedf_schedule_recovery_handler, 699 .dcbx_aen = qedf_dcbx_handler, 700 .get_generic_tlv_data = qedf_get_generic_tlv_data, 701 .get_protocol_tlv_data = qedf_get_protocol_tlv_data, 702 .schedule_hw_err_handler = qedf_schedule_hw_err_handler, 703 } 704 }; 705 706 /* 707 * Various transport templates. 708 */ 709 710 static struct scsi_transport_template *qedf_fc_transport_template; 711 static struct scsi_transport_template *qedf_fc_vport_transport_template; 712 713 /* 714 * SCSI EH handlers 715 */ 716 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd) 717 { 718 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); 719 struct fc_lport *lport; 720 struct qedf_ctx *qedf; 721 struct qedf_ioreq *io_req; 722 struct fc_rport_libfc_priv *rp = rport->dd_data; 723 struct fc_rport_priv *rdata; 724 struct qedf_rport *fcport = NULL; 725 int rc = FAILED; 726 int wait_count = 100; 727 int refcount = 0; 728 int rval; 729 int got_ref = 0; 730 731 lport = shost_priv(sc_cmd->device->host); 732 qedf = (struct qedf_ctx *)lport_priv(lport); 733 734 /* rport and tgt are allocated together, so tgt should be non-NULL */ 735 fcport = (struct qedf_rport *)&rp[1]; 736 rdata = fcport->rdata; 737 if (!rdata || !kref_get_unless_zero(&rdata->kref)) { 738 QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd); 739 rc = SUCCESS; 740 goto out; 741 } 742 743 744 io_req = qedf_priv(sc_cmd)->io_req; 745 if (!io_req) { 746 QEDF_ERR(&qedf->dbg_ctx, 747 "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n", 748 sc_cmd, sc_cmd->cmnd[0], 749 rdata->ids.port_id); 750 rc = SUCCESS; 751 goto drop_rdata_kref; 752 } 753 754 rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */ 755 if (rval) 756 got_ref = 1; 757 758 /* If we got a valid io_req, confirm it belongs to this sc_cmd. */ 759 if (!rval || io_req->sc_cmd != sc_cmd) { 760 QEDF_ERR(&qedf->dbg_ctx, 761 "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n", 762 io_req->sc_cmd, sc_cmd, rdata->ids.port_id); 763 764 goto drop_rdata_kref; 765 } 766 767 if (fc_remote_port_chkready(rport)) { 768 refcount = kref_read(&io_req->refcount); 769 QEDF_ERR(&qedf->dbg_ctx, 770 "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n", 771 io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0], 772 refcount, rdata->ids.port_id); 773 774 goto drop_rdata_kref; 775 } 776 777 rc = fc_block_scsi_eh(sc_cmd); 778 if (rc) 779 goto drop_rdata_kref; 780 781 if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) { 782 QEDF_ERR(&qedf->dbg_ctx, 783 "Connection uploading, xid=0x%x., port_id=%06x\n", 784 io_req->xid, rdata->ids.port_id); 785 while (io_req->sc_cmd && (wait_count != 0)) { 786 msleep(100); 787 wait_count--; 788 } 789 if (wait_count) { 790 QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n"); 791 rc = SUCCESS; 792 } else { 793 QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n"); 794 rc = FAILED; 795 } 796 goto drop_rdata_kref; 797 } 798 799 if (lport->state != LPORT_ST_READY || !(lport->link_up)) { 800 QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n"); 801 goto drop_rdata_kref; 802 } 803 804 QEDF_ERR(&qedf->dbg_ctx, 805 "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n", 806 io_req, sc_cmd, io_req->xid, io_req->fp_idx, 807 rdata->ids.port_id); 808 809 if (qedf->stop_io_on_error) { 810 qedf_stop_all_io(qedf); 811 rc = SUCCESS; 812 goto drop_rdata_kref; 813 } 814 815 init_completion(&io_req->abts_done); 816 rval = qedf_initiate_abts(io_req, true); 817 if (rval) { 818 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n"); 819 /* 820 * If we fail to queue the ABTS then return this command to 821 * the SCSI layer as it will own and free the xid 822 */ 823 rc = SUCCESS; 824 qedf_scsi_done(qedf, io_req, DID_ERROR); 825 goto drop_rdata_kref; 826 } 827 828 wait_for_completion(&io_req->abts_done); 829 830 if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS || 831 io_req->event == QEDF_IOREQ_EV_ABORT_FAILED || 832 io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) { 833 /* 834 * If we get a reponse to the abort this is success from 835 * the perspective that all references to the command have 836 * been removed from the driver and firmware 837 */ 838 rc = SUCCESS; 839 } else { 840 /* If the abort and cleanup failed then return a failure */ 841 rc = FAILED; 842 } 843 844 if (rc == SUCCESS) 845 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n", 846 io_req->xid); 847 else 848 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n", 849 io_req->xid); 850 851 drop_rdata_kref: 852 kref_put(&rdata->kref, fc_rport_destroy); 853 out: 854 if (got_ref) 855 kref_put(&io_req->refcount, qedf_release_cmd); 856 return rc; 857 } 858 859 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd) 860 { 861 QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...", 862 sc_cmd->device->host->host_no, sc_cmd->device->id, 863 sc_cmd->device->lun); 864 return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET); 865 } 866 867 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd) 868 { 869 QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ", 870 sc_cmd->device->host->host_no, sc_cmd->device->id, 871 sc_cmd->device->lun); 872 return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET); 873 } 874 875 bool qedf_wait_for_upload(struct qedf_ctx *qedf) 876 { 877 struct qedf_rport *fcport; 878 int wait_cnt = 120; 879 880 while (wait_cnt--) { 881 if (atomic_read(&qedf->num_offloads)) 882 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 883 "Waiting for all uploads to complete num_offloads = 0x%x.\n", 884 atomic_read(&qedf->num_offloads)); 885 else 886 return true; 887 msleep(500); 888 } 889 890 rcu_read_lock(); 891 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 892 if (test_bit(QEDF_RPORT_SESSION_READY, 893 &fcport->flags)) { 894 if (fcport->rdata) 895 QEDF_ERR(&qedf->dbg_ctx, 896 "Waiting for fcport %p portid=%06x.\n", 897 fcport, fcport->rdata->ids.port_id); 898 } else { 899 QEDF_ERR(&qedf->dbg_ctx, 900 "Waiting for fcport %p.\n", fcport); 901 } 902 } 903 904 rcu_read_unlock(); 905 return false; 906 } 907 908 /* Performs soft reset of qedf_ctx by simulating a link down/up */ 909 void qedf_ctx_soft_reset(struct fc_lport *lport) 910 { 911 struct qedf_ctx *qedf; 912 struct qed_link_output if_link; 913 914 if (lport->vport) { 915 printk_ratelimited("Cannot issue host reset on NPIV port.\n"); 916 return; 917 } 918 919 qedf = lport_priv(lport); 920 921 qedf->flogi_pending = 0; 922 /* For host reset, essentially do a soft link up/down */ 923 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 924 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 925 "Queuing link down work.\n"); 926 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 927 0); 928 929 if (qedf_wait_for_upload(qedf) == false) { 930 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 931 WARN_ON(atomic_read(&qedf->num_offloads)); 932 } 933 934 /* Before setting link up query physical link state */ 935 qed_ops->common->get_link(qedf->cdev, &if_link); 936 /* Bail if the physical link is not up */ 937 if (!if_link.link_up) { 938 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 939 "Physical link is not up.\n"); 940 return; 941 } 942 /* Flush and wait to make sure link down is processed */ 943 flush_delayed_work(&qedf->link_update); 944 msleep(500); 945 946 atomic_set(&qedf->link_state, QEDF_LINK_UP); 947 qedf->vlan_id = 0; 948 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 949 "Queue link up work.\n"); 950 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 951 0); 952 } 953 954 /* Reset the host by gracefully logging out and then logging back in */ 955 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd) 956 { 957 struct fc_lport *lport; 958 struct qedf_ctx *qedf; 959 960 lport = shost_priv(sc_cmd->device->host); 961 qedf = lport_priv(lport); 962 963 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN || 964 test_bit(QEDF_UNLOADING, &qedf->flags)) 965 return FAILED; 966 967 QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued..."); 968 969 qedf_ctx_soft_reset(lport); 970 971 return SUCCESS; 972 } 973 974 static int qedf_slave_configure(struct scsi_device *sdev) 975 { 976 if (qedf_queue_depth) { 977 scsi_change_queue_depth(sdev, qedf_queue_depth); 978 } 979 980 return 0; 981 } 982 983 static const struct scsi_host_template qedf_host_template = { 984 .module = THIS_MODULE, 985 .name = QEDF_MODULE_NAME, 986 .this_id = -1, 987 .cmd_per_lun = 32, 988 .max_sectors = 0xffff, 989 .queuecommand = qedf_queuecommand, 990 .shost_groups = qedf_host_groups, 991 .eh_abort_handler = qedf_eh_abort, 992 .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */ 993 .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */ 994 .eh_host_reset_handler = qedf_eh_host_reset, 995 .slave_configure = qedf_slave_configure, 996 .dma_boundary = QED_HW_DMA_BOUNDARY, 997 .sg_tablesize = QEDF_MAX_BDS_PER_CMD, 998 .can_queue = FCOE_PARAMS_NUM_TASKS, 999 .change_queue_depth = scsi_change_queue_depth, 1000 .cmd_size = sizeof(struct qedf_cmd_priv), 1001 }; 1002 1003 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen) 1004 { 1005 int rc; 1006 1007 spin_lock(&qedf_global_lock); 1008 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global); 1009 spin_unlock(&qedf_global_lock); 1010 1011 return rc; 1012 } 1013 1014 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id) 1015 { 1016 struct qedf_rport *fcport; 1017 struct fc_rport_priv *rdata; 1018 1019 rcu_read_lock(); 1020 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 1021 rdata = fcport->rdata; 1022 if (rdata == NULL) 1023 continue; 1024 if (rdata->ids.port_id == port_id) { 1025 rcu_read_unlock(); 1026 return fcport; 1027 } 1028 } 1029 rcu_read_unlock(); 1030 1031 /* Return NULL to caller to let them know fcport was not found */ 1032 return NULL; 1033 } 1034 1035 /* Transmits an ELS frame over an offloaded session */ 1036 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp) 1037 { 1038 struct fc_frame_header *fh; 1039 int rc = 0; 1040 1041 fh = fc_frame_header_get(fp); 1042 if ((fh->fh_type == FC_TYPE_ELS) && 1043 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 1044 switch (fc_frame_payload_op(fp)) { 1045 case ELS_ADISC: 1046 qedf_send_adisc(fcport, fp); 1047 rc = 1; 1048 break; 1049 } 1050 } 1051 1052 return rc; 1053 } 1054 1055 /* 1056 * qedf_xmit - qedf FCoE frame transmit function 1057 */ 1058 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp) 1059 { 1060 struct fc_lport *base_lport; 1061 struct qedf_ctx *qedf; 1062 struct ethhdr *eh; 1063 struct fcoe_crc_eof *cp; 1064 struct sk_buff *skb; 1065 struct fc_frame_header *fh; 1066 struct fcoe_hdr *hp; 1067 u8 sof, eof; 1068 u32 crc; 1069 unsigned int hlen, tlen, elen; 1070 int wlen; 1071 struct fc_lport *tmp_lport; 1072 struct fc_lport *vn_port = NULL; 1073 struct qedf_rport *fcport; 1074 int rc; 1075 u16 vlan_tci = 0; 1076 1077 qedf = (struct qedf_ctx *)lport_priv(lport); 1078 1079 fh = fc_frame_header_get(fp); 1080 skb = fp_skb(fp); 1081 1082 /* Filter out traffic to other NPIV ports on the same host */ 1083 if (lport->vport) 1084 base_lport = shost_priv(vport_to_shost(lport->vport)); 1085 else 1086 base_lport = lport; 1087 1088 /* Flag if the destination is the base port */ 1089 if (base_lport->port_id == ntoh24(fh->fh_d_id)) { 1090 vn_port = base_lport; 1091 } else { 1092 /* Got through the list of vports attached to the base_lport 1093 * and see if we have a match with the destination address. 1094 */ 1095 list_for_each_entry(tmp_lport, &base_lport->vports, list) { 1096 if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) { 1097 vn_port = tmp_lport; 1098 break; 1099 } 1100 } 1101 } 1102 if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) { 1103 struct fc_rport_priv *rdata = NULL; 1104 1105 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 1106 "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id)); 1107 kfree_skb(skb); 1108 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id)); 1109 if (rdata) { 1110 rdata->retries = lport->max_rport_retry_count; 1111 kref_put(&rdata->kref, fc_rport_destroy); 1112 } 1113 return -EINVAL; 1114 } 1115 /* End NPIV filtering */ 1116 1117 if (!qedf->ctlr.sel_fcf) { 1118 kfree_skb(skb); 1119 return 0; 1120 } 1121 1122 if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) { 1123 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n"); 1124 kfree_skb(skb); 1125 return 0; 1126 } 1127 1128 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 1129 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n"); 1130 kfree_skb(skb); 1131 return 0; 1132 } 1133 1134 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 1135 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb)) 1136 return 0; 1137 } 1138 1139 /* Check to see if this needs to be sent on an offloaded session */ 1140 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 1141 1142 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1143 rc = qedf_xmit_l2_frame(fcport, fp); 1144 /* 1145 * If the frame was successfully sent over the middle path 1146 * then do not try to also send it over the LL2 path 1147 */ 1148 if (rc) 1149 return 0; 1150 } 1151 1152 sof = fr_sof(fp); 1153 eof = fr_eof(fp); 1154 1155 elen = sizeof(struct ethhdr); 1156 hlen = sizeof(struct fcoe_hdr); 1157 tlen = sizeof(struct fcoe_crc_eof); 1158 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; 1159 1160 skb->ip_summed = CHECKSUM_NONE; 1161 crc = fcoe_fc_crc(fp); 1162 1163 /* copy port crc and eof to the skb buff */ 1164 if (skb_is_nonlinear(skb)) { 1165 skb_frag_t *frag; 1166 1167 if (qedf_get_paged_crc_eof(skb, tlen)) { 1168 kfree_skb(skb); 1169 return -ENOMEM; 1170 } 1171 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; 1172 cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag); 1173 } else { 1174 cp = skb_put(skb, tlen); 1175 } 1176 1177 memset(cp, 0, sizeof(*cp)); 1178 cp->fcoe_eof = eof; 1179 cp->fcoe_crc32 = cpu_to_le32(~crc); 1180 if (skb_is_nonlinear(skb)) { 1181 kunmap_atomic(cp); 1182 cp = NULL; 1183 } 1184 1185 1186 /* adjust skb network/transport offsets to match mac/fcoe/port */ 1187 skb_push(skb, elen + hlen); 1188 skb_reset_mac_header(skb); 1189 skb_reset_network_header(skb); 1190 skb->mac_len = elen; 1191 skb->protocol = htons(ETH_P_FCOE); 1192 1193 /* 1194 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN 1195 * for FIP/FCoE traffic. 1196 */ 1197 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id); 1198 1199 /* fill up mac and fcoe headers */ 1200 eh = eth_hdr(skb); 1201 eh->h_proto = htons(ETH_P_FCOE); 1202 if (qedf->ctlr.map_dest) 1203 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); 1204 else 1205 /* insert GW address */ 1206 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr); 1207 1208 /* Set the source MAC address */ 1209 ether_addr_copy(eh->h_source, qedf->data_src_addr); 1210 1211 hp = (struct fcoe_hdr *)(eh + 1); 1212 memset(hp, 0, sizeof(*hp)); 1213 if (FC_FCOE_VER) 1214 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); 1215 hp->fcoe_sof = sof; 1216 1217 /*update tx stats */ 1218 this_cpu_inc(lport->stats->TxFrames); 1219 this_cpu_add(lport->stats->TxWords, wlen); 1220 1221 /* Get VLAN ID from skb for printing purposes */ 1222 __vlan_hwaccel_get_tag(skb, &vlan_tci); 1223 1224 /* send down to lld */ 1225 fr_dev(fp) = lport; 1226 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: " 1227 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n", 1228 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type, 1229 vlan_tci); 1230 if (qedf_dump_frames) 1231 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 1232 1, skb->data, skb->len, false); 1233 rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0); 1234 if (rc) { 1235 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc); 1236 kfree_skb(skb); 1237 return rc; 1238 } 1239 1240 return 0; 1241 } 1242 1243 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1244 { 1245 int rval = 0; 1246 u32 *pbl; 1247 dma_addr_t page; 1248 int num_pages; 1249 1250 /* Calculate appropriate queue and PBL sizes */ 1251 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 1252 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE); 1253 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) * 1254 sizeof(void *); 1255 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE; 1256 1257 fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1258 &fcport->sq_dma, GFP_KERNEL); 1259 if (!fcport->sq) { 1260 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n"); 1261 rval = 1; 1262 goto out; 1263 } 1264 1265 fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 1266 fcport->sq_pbl_size, 1267 &fcport->sq_pbl_dma, GFP_KERNEL); 1268 if (!fcport->sq_pbl) { 1269 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n"); 1270 rval = 1; 1271 goto out_free_sq; 1272 } 1273 1274 /* Create PBL */ 1275 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE; 1276 page = fcport->sq_dma; 1277 pbl = (u32 *)fcport->sq_pbl; 1278 1279 while (num_pages--) { 1280 *pbl = U64_LO(page); 1281 pbl++; 1282 *pbl = U64_HI(page); 1283 pbl++; 1284 page += QEDF_PAGE_SIZE; 1285 } 1286 1287 return rval; 1288 1289 out_free_sq: 1290 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq, 1291 fcport->sq_dma); 1292 out: 1293 return rval; 1294 } 1295 1296 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1297 { 1298 if (fcport->sq_pbl) 1299 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size, 1300 fcport->sq_pbl, fcport->sq_pbl_dma); 1301 if (fcport->sq) 1302 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1303 fcport->sq, fcport->sq_dma); 1304 } 1305 1306 static int qedf_offload_connection(struct qedf_ctx *qedf, 1307 struct qedf_rport *fcport) 1308 { 1309 struct qed_fcoe_params_offload conn_info; 1310 u32 port_id; 1311 int rval; 1312 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe)); 1313 1314 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection " 1315 "portid=%06x.\n", fcport->rdata->ids.port_id); 1316 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle, 1317 &fcport->fw_cid, &fcport->p_doorbell); 1318 if (rval) { 1319 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection " 1320 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1321 rval = 1; /* For some reason qed returns 0 on failure here */ 1322 goto out; 1323 } 1324 1325 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x " 1326 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id, 1327 fcport->fw_cid, fcport->handle); 1328 1329 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload)); 1330 1331 /* Fill in the offload connection info */ 1332 conn_info.sq_pbl_addr = fcport->sq_pbl_dma; 1333 1334 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl); 1335 conn_info.sq_next_page_addr = 1336 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8)); 1337 1338 /* Need to use our FCoE MAC for the offload session */ 1339 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr); 1340 1341 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr); 1342 1343 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size; 1344 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov; 1345 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */ 1346 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size; 1347 1348 /* Set VLAN data */ 1349 conn_info.vlan_tag = qedf->vlan_id << 1350 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT; 1351 conn_info.vlan_tag |= 1352 qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT; 1353 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK << 1354 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT); 1355 1356 /* Set host port source id */ 1357 port_id = fc_host_port_id(qedf->lport->host); 1358 fcport->sid = port_id; 1359 conn_info.s_id.addr_hi = (port_id & 0x000000FF); 1360 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1361 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1362 1363 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq; 1364 1365 /* Set remote port destination id */ 1366 port_id = fcport->rdata->rport->port_id; 1367 conn_info.d_id.addr_hi = (port_id & 0x000000FF); 1368 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1369 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1370 1371 conn_info.def_q_idx = 0; /* Default index for send queue? */ 1372 1373 /* Set FC-TAPE specific flags if needed */ 1374 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) { 1375 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, 1376 "Enable CONF, REC for portid=%06x.\n", 1377 fcport->rdata->ids.port_id); 1378 conn_info.flags |= 1 << 1379 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT; 1380 conn_info.flags |= 1381 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) << 1382 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT; 1383 } 1384 1385 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info); 1386 if (rval) { 1387 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection " 1388 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1389 goto out_free_conn; 1390 } else 1391 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload " 1392 "succeeded portid=%06x total_sqe=%d.\n", 1393 fcport->rdata->ids.port_id, total_sqe); 1394 1395 spin_lock_init(&fcport->rport_lock); 1396 atomic_set(&fcport->free_sqes, total_sqe); 1397 return 0; 1398 out_free_conn: 1399 qed_ops->release_conn(qedf->cdev, fcport->handle); 1400 out: 1401 return rval; 1402 } 1403 1404 #define QEDF_TERM_BUFF_SIZE 10 1405 static void qedf_upload_connection(struct qedf_ctx *qedf, 1406 struct qedf_rport *fcport) 1407 { 1408 void *term_params; 1409 dma_addr_t term_params_dma; 1410 1411 /* Term params needs to be a DMA coherent buffer as qed shared the 1412 * physical DMA address with the firmware. The buffer may be used in 1413 * the receive path so we may eventually have to move this. 1414 */ 1415 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, 1416 &term_params_dma, GFP_KERNEL); 1417 if (!term_params) 1418 return; 1419 1420 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection " 1421 "port_id=%06x.\n", fcport->rdata->ids.port_id); 1422 1423 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma); 1424 qed_ops->release_conn(qedf->cdev, fcport->handle); 1425 1426 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params, 1427 term_params_dma); 1428 } 1429 1430 static void qedf_cleanup_fcport(struct qedf_ctx *qedf, 1431 struct qedf_rport *fcport) 1432 { 1433 struct fc_rport_priv *rdata = fcport->rdata; 1434 1435 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n", 1436 fcport->rdata->ids.port_id); 1437 1438 /* Flush any remaining i/o's before we upload the connection */ 1439 qedf_flush_active_ios(fcport, -1); 1440 1441 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) 1442 qedf_upload_connection(qedf, fcport); 1443 qedf_free_sq(qedf, fcport); 1444 fcport->rdata = NULL; 1445 fcport->qedf = NULL; 1446 kref_put(&rdata->kref, fc_rport_destroy); 1447 } 1448 1449 /* 1450 * This event_callback is called after successful completion of libfc 1451 * initiated target login. qedf can proceed with initiating the session 1452 * establishment. 1453 */ 1454 static void qedf_rport_event_handler(struct fc_lport *lport, 1455 struct fc_rport_priv *rdata, 1456 enum fc_rport_event event) 1457 { 1458 struct qedf_ctx *qedf = lport_priv(lport); 1459 struct fc_rport *rport = rdata->rport; 1460 struct fc_rport_libfc_priv *rp; 1461 struct qedf_rport *fcport; 1462 u32 port_id; 1463 int rval; 1464 unsigned long flags; 1465 1466 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, " 1467 "port_id = 0x%x\n", event, rdata->ids.port_id); 1468 1469 switch (event) { 1470 case RPORT_EV_READY: 1471 if (!rport) { 1472 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n"); 1473 break; 1474 } 1475 1476 rp = rport->dd_data; 1477 fcport = (struct qedf_rport *)&rp[1]; 1478 fcport->qedf = qedf; 1479 1480 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) { 1481 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading " 1482 "portid=0x%x as max number of offloaded sessions " 1483 "reached.\n", rdata->ids.port_id); 1484 return; 1485 } 1486 1487 /* 1488 * Don't try to offload the session again. Can happen when we 1489 * get an ADISC 1490 */ 1491 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1492 QEDF_WARN(&(qedf->dbg_ctx), "Session already " 1493 "offloaded, portid=0x%x.\n", 1494 rdata->ids.port_id); 1495 return; 1496 } 1497 1498 if (rport->port_id == FC_FID_DIR_SERV) { 1499 /* 1500 * qedf_rport structure doesn't exist for 1501 * directory server. 1502 * We should not come here, as lport will 1503 * take care of fabric login 1504 */ 1505 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not " 1506 "exist for dir server port_id=%x\n", 1507 rdata->ids.port_id); 1508 break; 1509 } 1510 1511 if (rdata->spp_type != FC_TYPE_FCP) { 1512 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1513 "Not offloading since spp type isn't FCP\n"); 1514 break; 1515 } 1516 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1517 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1518 "Not FCP target so not offloading\n"); 1519 break; 1520 } 1521 1522 /* Initial reference held on entry, so this can't fail */ 1523 kref_get(&rdata->kref); 1524 fcport->rdata = rdata; 1525 fcport->rport = rport; 1526 1527 rval = qedf_alloc_sq(qedf, fcport); 1528 if (rval) { 1529 qedf_cleanup_fcport(qedf, fcport); 1530 break; 1531 } 1532 1533 /* Set device type */ 1534 if (rdata->flags & FC_RP_FLAGS_RETRY && 1535 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET && 1536 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) { 1537 fcport->dev_type = QEDF_RPORT_TYPE_TAPE; 1538 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1539 "portid=%06x is a TAPE device.\n", 1540 rdata->ids.port_id); 1541 } else { 1542 fcport->dev_type = QEDF_RPORT_TYPE_DISK; 1543 } 1544 1545 rval = qedf_offload_connection(qedf, fcport); 1546 if (rval) { 1547 qedf_cleanup_fcport(qedf, fcport); 1548 break; 1549 } 1550 1551 /* Add fcport to list of qedf_ctx list of offloaded ports */ 1552 spin_lock_irqsave(&qedf->hba_lock, flags); 1553 list_add_rcu(&fcport->peers, &qedf->fcports); 1554 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1555 1556 /* 1557 * Set the session ready bit to let everyone know that this 1558 * connection is ready for I/O 1559 */ 1560 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags); 1561 atomic_inc(&qedf->num_offloads); 1562 1563 break; 1564 case RPORT_EV_LOGO: 1565 case RPORT_EV_FAILED: 1566 case RPORT_EV_STOP: 1567 port_id = rdata->ids.port_id; 1568 if (port_id == FC_FID_DIR_SERV) 1569 break; 1570 1571 if (rdata->spp_type != FC_TYPE_FCP) { 1572 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1573 "No action since spp type isn't FCP\n"); 1574 break; 1575 } 1576 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1577 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1578 "Not FCP target so no action\n"); 1579 break; 1580 } 1581 1582 if (!rport) { 1583 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1584 "port_id=%x - rport notcreated Yet!!\n", port_id); 1585 break; 1586 } 1587 rp = rport->dd_data; 1588 /* 1589 * Perform session upload. Note that rdata->peers is already 1590 * removed from disc->rports list before we get this event. 1591 */ 1592 fcport = (struct qedf_rport *)&rp[1]; 1593 1594 spin_lock_irqsave(&fcport->rport_lock, flags); 1595 /* Only free this fcport if it is offloaded already */ 1596 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) && 1597 !test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1598 &fcport->flags)) { 1599 set_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1600 &fcport->flags); 1601 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1602 qedf_cleanup_fcport(qedf, fcport); 1603 /* 1604 * Remove fcport to list of qedf_ctx list of offloaded 1605 * ports 1606 */ 1607 spin_lock_irqsave(&qedf->hba_lock, flags); 1608 list_del_rcu(&fcport->peers); 1609 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1610 1611 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1612 &fcport->flags); 1613 atomic_dec(&qedf->num_offloads); 1614 } else { 1615 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1616 } 1617 break; 1618 1619 case RPORT_EV_NONE: 1620 break; 1621 } 1622 } 1623 1624 static void qedf_abort_io(struct fc_lport *lport) 1625 { 1626 /* NO-OP but need to fill in the template */ 1627 } 1628 1629 static void qedf_fcp_cleanup(struct fc_lport *lport) 1630 { 1631 /* 1632 * NO-OP but need to fill in template to prevent a NULL 1633 * function pointer dereference during link down. I/Os 1634 * will be flushed when port is uploaded. 1635 */ 1636 } 1637 1638 static struct libfc_function_template qedf_lport_template = { 1639 .frame_send = qedf_xmit, 1640 .fcp_abort_io = qedf_abort_io, 1641 .fcp_cleanup = qedf_fcp_cleanup, 1642 .rport_event_callback = qedf_rport_event_handler, 1643 .elsct_send = qedf_elsct_send, 1644 }; 1645 1646 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf) 1647 { 1648 fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO); 1649 1650 qedf->ctlr.send = qedf_fip_send; 1651 qedf->ctlr.get_src_addr = qedf_get_src_mac; 1652 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac); 1653 } 1654 1655 static void qedf_setup_fdmi(struct qedf_ctx *qedf) 1656 { 1657 struct fc_lport *lport = qedf->lport; 1658 u8 buf[8]; 1659 int pos; 1660 uint32_t i; 1661 1662 /* 1663 * fdmi_enabled needs to be set for libfc 1664 * to execute FDMI registration 1665 */ 1666 lport->fdmi_enabled = 1; 1667 1668 /* 1669 * Setup the necessary fc_host attributes to that will be used to fill 1670 * in the FDMI information. 1671 */ 1672 1673 /* Get the PCI-e Device Serial Number Capability */ 1674 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN); 1675 if (pos) { 1676 pos += 4; 1677 for (i = 0; i < 8; i++) 1678 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]); 1679 1680 snprintf(fc_host_serial_number(lport->host), 1681 FC_SERIAL_NUMBER_SIZE, 1682 "%02X%02X%02X%02X%02X%02X%02X%02X", 1683 buf[7], buf[6], buf[5], buf[4], 1684 buf[3], buf[2], buf[1], buf[0]); 1685 } else 1686 snprintf(fc_host_serial_number(lport->host), 1687 FC_SERIAL_NUMBER_SIZE, "Unknown"); 1688 1689 snprintf(fc_host_manufacturer(lport->host), 1690 FC_SERIAL_NUMBER_SIZE, "%s", "Marvell Semiconductor Inc."); 1691 1692 if (qedf->pdev->device == QL45xxx) { 1693 snprintf(fc_host_model(lport->host), 1694 FC_SYMBOLIC_NAME_SIZE, "%s", "QL45xxx"); 1695 1696 snprintf(fc_host_model_description(lport->host), 1697 FC_SYMBOLIC_NAME_SIZE, "%s", 1698 "Marvell FastLinQ QL45xxx FCoE Adapter"); 1699 } 1700 1701 if (qedf->pdev->device == QL41xxx) { 1702 snprintf(fc_host_model(lport->host), 1703 FC_SYMBOLIC_NAME_SIZE, "%s", "QL41xxx"); 1704 1705 snprintf(fc_host_model_description(lport->host), 1706 FC_SYMBOLIC_NAME_SIZE, "%s", 1707 "Marvell FastLinQ QL41xxx FCoE Adapter"); 1708 } 1709 1710 snprintf(fc_host_hardware_version(lport->host), 1711 FC_VERSION_STRING_SIZE, "Rev %d", qedf->pdev->revision); 1712 1713 snprintf(fc_host_driver_version(lport->host), 1714 FC_VERSION_STRING_SIZE, "%s", QEDF_VERSION); 1715 1716 snprintf(fc_host_firmware_version(lport->host), 1717 FC_VERSION_STRING_SIZE, "%d.%d.%d.%d", 1718 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 1719 FW_ENGINEERING_VERSION); 1720 1721 snprintf(fc_host_vendor_identifier(lport->host), 1722 FC_VENDOR_IDENTIFIER, "%s", "Marvell"); 1723 1724 } 1725 1726 static int qedf_lport_setup(struct qedf_ctx *qedf) 1727 { 1728 struct fc_lport *lport = qedf->lport; 1729 1730 lport->link_up = 0; 1731 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1732 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1733 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1734 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1735 lport->boot_time = jiffies; 1736 lport->e_d_tov = 2 * 1000; 1737 lport->r_a_tov = 10 * 1000; 1738 1739 /* Set NPIV support */ 1740 lport->does_npiv = 1; 1741 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV; 1742 1743 fc_set_wwnn(lport, qedf->wwnn); 1744 fc_set_wwpn(lport, qedf->wwpn); 1745 1746 if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) { 1747 QEDF_ERR(&qedf->dbg_ctx, 1748 "fcoe_libfc_config failed.\n"); 1749 return -ENOMEM; 1750 } 1751 1752 /* Allocate the exchange manager */ 1753 fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS, 1754 0xfffe, NULL); 1755 1756 if (fc_lport_init_stats(lport)) 1757 return -ENOMEM; 1758 1759 /* Finish lport config */ 1760 fc_lport_config(lport); 1761 1762 /* Set max frame size */ 1763 fc_set_mfs(lport, QEDF_MFS); 1764 fc_host_maxframe_size(lport->host) = lport->mfs; 1765 1766 /* Set default dev_loss_tmo based on module parameter */ 1767 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo; 1768 1769 /* Set symbolic node name */ 1770 if (qedf->pdev->device == QL45xxx) 1771 snprintf(fc_host_symbolic_name(lport->host), 256, 1772 "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION); 1773 1774 if (qedf->pdev->device == QL41xxx) 1775 snprintf(fc_host_symbolic_name(lport->host), 256, 1776 "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION); 1777 1778 qedf_setup_fdmi(qedf); 1779 1780 return 0; 1781 } 1782 1783 /* 1784 * NPIV functions 1785 */ 1786 1787 static int qedf_vport_libfc_config(struct fc_vport *vport, 1788 struct fc_lport *lport) 1789 { 1790 lport->link_up = 0; 1791 lport->qfull = 0; 1792 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1793 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1794 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1795 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1796 lport->boot_time = jiffies; 1797 lport->e_d_tov = 2 * 1000; 1798 lport->r_a_tov = 10 * 1000; 1799 lport->does_npiv = 1; /* Temporary until we add NPIV support */ 1800 1801 /* Allocate stats for vport */ 1802 if (fc_lport_init_stats(lport)) 1803 return -ENOMEM; 1804 1805 /* Finish lport config */ 1806 fc_lport_config(lport); 1807 1808 /* offload related configuration */ 1809 lport->crc_offload = 0; 1810 lport->seq_offload = 0; 1811 lport->lro_enabled = 0; 1812 lport->lro_xid = 0; 1813 lport->lso_max = 0; 1814 1815 return 0; 1816 } 1817 1818 static int qedf_vport_create(struct fc_vport *vport, bool disabled) 1819 { 1820 struct Scsi_Host *shost = vport_to_shost(vport); 1821 struct fc_lport *n_port = shost_priv(shost); 1822 struct fc_lport *vn_port; 1823 struct qedf_ctx *base_qedf = lport_priv(n_port); 1824 struct qedf_ctx *vport_qedf; 1825 1826 char buf[32]; 1827 int rc = 0; 1828 1829 rc = fcoe_validate_vport_create(vport); 1830 if (rc) { 1831 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1832 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, " 1833 "WWPN (0x%s) already exists.\n", buf); 1834 return rc; 1835 } 1836 1837 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) { 1838 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport " 1839 "because link is not up.\n"); 1840 return -EIO; 1841 } 1842 1843 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx)); 1844 if (!vn_port) { 1845 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport " 1846 "for vport.\n"); 1847 return -ENOMEM; 1848 } 1849 1850 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1851 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n", 1852 buf); 1853 1854 /* Copy some fields from base_qedf */ 1855 vport_qedf = lport_priv(vn_port); 1856 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx)); 1857 1858 /* Set qedf data specific to this vport */ 1859 vport_qedf->lport = vn_port; 1860 /* Use same hba_lock as base_qedf */ 1861 vport_qedf->hba_lock = base_qedf->hba_lock; 1862 vport_qedf->pdev = base_qedf->pdev; 1863 vport_qedf->cmd_mgr = base_qedf->cmd_mgr; 1864 init_completion(&vport_qedf->flogi_compl); 1865 INIT_LIST_HEAD(&vport_qedf->fcports); 1866 INIT_DELAYED_WORK(&vport_qedf->stag_work, qedf_stag_change_work); 1867 1868 rc = qedf_vport_libfc_config(vport, vn_port); 1869 if (rc) { 1870 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory " 1871 "for lport stats.\n"); 1872 goto err; 1873 } 1874 1875 fc_set_wwnn(vn_port, vport->node_name); 1876 fc_set_wwpn(vn_port, vport->port_name); 1877 vport_qedf->wwnn = vn_port->wwnn; 1878 vport_qedf->wwpn = vn_port->wwpn; 1879 1880 vn_port->host->transportt = qedf_fc_vport_transport_template; 1881 vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS; 1882 vn_port->host->max_lun = qedf_max_lun; 1883 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD; 1884 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN; 1885 vn_port->host->max_id = QEDF_MAX_SESSIONS; 1886 1887 rc = scsi_add_host(vn_port->host, &vport->dev); 1888 if (rc) { 1889 QEDF_WARN(&base_qedf->dbg_ctx, 1890 "Error adding Scsi_Host rc=0x%x.\n", rc); 1891 goto err; 1892 } 1893 1894 /* Set default dev_loss_tmo based on module parameter */ 1895 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo; 1896 1897 /* Init libfc stuffs */ 1898 memcpy(&vn_port->tt, &qedf_lport_template, 1899 sizeof(qedf_lport_template)); 1900 fc_exch_init(vn_port); 1901 fc_elsct_init(vn_port); 1902 fc_lport_init(vn_port); 1903 fc_disc_init(vn_port); 1904 fc_disc_config(vn_port, vn_port); 1905 1906 1907 /* Allocate the exchange manager */ 1908 shost = vport_to_shost(vport); 1909 n_port = shost_priv(shost); 1910 fc_exch_mgr_list_clone(n_port, vn_port); 1911 1912 /* Set max frame size */ 1913 fc_set_mfs(vn_port, QEDF_MFS); 1914 1915 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN; 1916 1917 if (disabled) { 1918 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1919 } else { 1920 vn_port->boot_time = jiffies; 1921 fc_fabric_login(vn_port); 1922 fc_vport_setlink(vn_port); 1923 } 1924 1925 /* Set symbolic node name */ 1926 if (base_qedf->pdev->device == QL45xxx) 1927 snprintf(fc_host_symbolic_name(vn_port->host), 256, 1928 "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION); 1929 1930 if (base_qedf->pdev->device == QL41xxx) 1931 snprintf(fc_host_symbolic_name(vn_port->host), 256, 1932 "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION); 1933 1934 /* Set supported speed */ 1935 fc_host_supported_speeds(vn_port->host) = n_port->link_supported_speeds; 1936 1937 /* Set speed */ 1938 vn_port->link_speed = n_port->link_speed; 1939 1940 /* Set port type */ 1941 fc_host_port_type(vn_port->host) = FC_PORTTYPE_NPIV; 1942 1943 /* Set maxframe size */ 1944 fc_host_maxframe_size(vn_port->host) = n_port->mfs; 1945 1946 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n", 1947 vn_port); 1948 1949 /* Set up debug context for vport */ 1950 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no; 1951 vport_qedf->dbg_ctx.pdev = base_qedf->pdev; 1952 1953 return 0; 1954 1955 err: 1956 scsi_host_put(vn_port->host); 1957 return rc; 1958 } 1959 1960 static int qedf_vport_destroy(struct fc_vport *vport) 1961 { 1962 struct Scsi_Host *shost = vport_to_shost(vport); 1963 struct fc_lport *n_port = shost_priv(shost); 1964 struct fc_lport *vn_port = vport->dd_data; 1965 struct qedf_ctx *qedf = lport_priv(vn_port); 1966 1967 if (!qedf) { 1968 QEDF_ERR(NULL, "qedf is NULL.\n"); 1969 goto out; 1970 } 1971 1972 /* Set unloading bit on vport qedf_ctx to prevent more I/O */ 1973 set_bit(QEDF_UNLOADING, &qedf->flags); 1974 1975 mutex_lock(&n_port->lp_mutex); 1976 list_del(&vn_port->list); 1977 mutex_unlock(&n_port->lp_mutex); 1978 1979 fc_fabric_logoff(vn_port); 1980 fc_lport_destroy(vn_port); 1981 1982 /* Detach from scsi-ml */ 1983 fc_remove_host(vn_port->host); 1984 scsi_remove_host(vn_port->host); 1985 1986 /* 1987 * Only try to release the exchange manager if the vn_port 1988 * configuration is complete. 1989 */ 1990 if (vn_port->state == LPORT_ST_READY) 1991 fc_exch_mgr_free(vn_port); 1992 1993 /* Free memory used by statistical counters */ 1994 fc_lport_free_stats(vn_port); 1995 1996 /* Release Scsi_Host */ 1997 scsi_host_put(vn_port->host); 1998 1999 out: 2000 return 0; 2001 } 2002 2003 static int qedf_vport_disable(struct fc_vport *vport, bool disable) 2004 { 2005 struct fc_lport *lport = vport->dd_data; 2006 2007 if (disable) { 2008 fc_vport_set_state(vport, FC_VPORT_DISABLED); 2009 fc_fabric_logoff(lport); 2010 } else { 2011 lport->boot_time = jiffies; 2012 fc_fabric_login(lport); 2013 fc_vport_setlink(lport); 2014 } 2015 return 0; 2016 } 2017 2018 /* 2019 * During removal we need to wait for all the vports associated with a port 2020 * to be destroyed so we avoid a race condition where libfc is still trying 2021 * to reap vports while the driver remove function has already reaped the 2022 * driver contexts associated with the physical port. 2023 */ 2024 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf) 2025 { 2026 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host); 2027 2028 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 2029 "Entered.\n"); 2030 while (fc_host->npiv_vports_inuse > 0) { 2031 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 2032 "Waiting for all vports to be reaped.\n"); 2033 msleep(1000); 2034 } 2035 } 2036 2037 /** 2038 * qedf_fcoe_reset - Resets the fcoe 2039 * 2040 * @shost: shost the reset is from 2041 * 2042 * Returns: always 0 2043 */ 2044 static int qedf_fcoe_reset(struct Scsi_Host *shost) 2045 { 2046 struct fc_lport *lport = shost_priv(shost); 2047 2048 qedf_ctx_soft_reset(lport); 2049 return 0; 2050 } 2051 2052 static void qedf_get_host_port_id(struct Scsi_Host *shost) 2053 { 2054 struct fc_lport *lport = shost_priv(shost); 2055 2056 fc_host_port_id(shost) = lport->port_id; 2057 } 2058 2059 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host 2060 *shost) 2061 { 2062 struct fc_host_statistics *qedf_stats; 2063 struct fc_lport *lport = shost_priv(shost); 2064 struct qedf_ctx *qedf = lport_priv(lport); 2065 struct qed_fcoe_stats *fw_fcoe_stats; 2066 2067 qedf_stats = fc_get_host_stats(shost); 2068 2069 /* We don't collect offload stats for specific NPIV ports */ 2070 if (lport->vport) 2071 goto out; 2072 2073 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL); 2074 if (!fw_fcoe_stats) { 2075 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for " 2076 "fw_fcoe_stats.\n"); 2077 goto out; 2078 } 2079 2080 mutex_lock(&qedf->stats_mutex); 2081 2082 /* Query firmware for offload stats */ 2083 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats); 2084 2085 /* 2086 * The expectation is that we add our offload stats to the stats 2087 * being maintained by libfc each time the fc_get_host_status callback 2088 * is invoked. The additions are not carried over for each call to 2089 * the fc_get_host_stats callback. 2090 */ 2091 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt + 2092 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt + 2093 fw_fcoe_stats->fcoe_tx_other_pkt_cnt; 2094 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt + 2095 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt + 2096 fw_fcoe_stats->fcoe_rx_other_pkt_cnt; 2097 qedf_stats->fcp_input_megabytes += 2098 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000); 2099 qedf_stats->fcp_output_megabytes += 2100 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000); 2101 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4; 2102 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4; 2103 qedf_stats->invalid_crc_count += 2104 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt; 2105 qedf_stats->dumped_frames = 2106 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 2107 qedf_stats->error_frames += 2108 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 2109 qedf_stats->fcp_input_requests += qedf->input_requests; 2110 qedf_stats->fcp_output_requests += qedf->output_requests; 2111 qedf_stats->fcp_control_requests += qedf->control_requests; 2112 qedf_stats->fcp_packet_aborts += qedf->packet_aborts; 2113 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures; 2114 2115 mutex_unlock(&qedf->stats_mutex); 2116 kfree(fw_fcoe_stats); 2117 out: 2118 return qedf_stats; 2119 } 2120 2121 static struct fc_function_template qedf_fc_transport_fn = { 2122 .show_host_node_name = 1, 2123 .show_host_port_name = 1, 2124 .show_host_supported_classes = 1, 2125 .show_host_supported_fc4s = 1, 2126 .show_host_active_fc4s = 1, 2127 .show_host_maxframe_size = 1, 2128 2129 .get_host_port_id = qedf_get_host_port_id, 2130 .show_host_port_id = 1, 2131 .show_host_supported_speeds = 1, 2132 .get_host_speed = fc_get_host_speed, 2133 .show_host_speed = 1, 2134 .show_host_port_type = 1, 2135 .get_host_port_state = fc_get_host_port_state, 2136 .show_host_port_state = 1, 2137 .show_host_symbolic_name = 1, 2138 2139 /* 2140 * Tell FC transport to allocate enough space to store the backpointer 2141 * for the associate qedf_rport struct. 2142 */ 2143 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2144 sizeof(struct qedf_rport)), 2145 .show_rport_maxframe_size = 1, 2146 .show_rport_supported_classes = 1, 2147 .show_host_fabric_name = 1, 2148 .show_starget_node_name = 1, 2149 .show_starget_port_name = 1, 2150 .show_starget_port_id = 1, 2151 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2152 .show_rport_dev_loss_tmo = 1, 2153 .get_fc_host_stats = qedf_fc_get_host_stats, 2154 .issue_fc_host_lip = qedf_fcoe_reset, 2155 .vport_create = qedf_vport_create, 2156 .vport_delete = qedf_vport_destroy, 2157 .vport_disable = qedf_vport_disable, 2158 .bsg_request = fc_lport_bsg_request, 2159 }; 2160 2161 static struct fc_function_template qedf_fc_vport_transport_fn = { 2162 .show_host_node_name = 1, 2163 .show_host_port_name = 1, 2164 .show_host_supported_classes = 1, 2165 .show_host_supported_fc4s = 1, 2166 .show_host_active_fc4s = 1, 2167 .show_host_maxframe_size = 1, 2168 .show_host_port_id = 1, 2169 .show_host_supported_speeds = 1, 2170 .get_host_speed = fc_get_host_speed, 2171 .show_host_speed = 1, 2172 .show_host_port_type = 1, 2173 .get_host_port_state = fc_get_host_port_state, 2174 .show_host_port_state = 1, 2175 .show_host_symbolic_name = 1, 2176 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2177 sizeof(struct qedf_rport)), 2178 .show_rport_maxframe_size = 1, 2179 .show_rport_supported_classes = 1, 2180 .show_host_fabric_name = 1, 2181 .show_starget_node_name = 1, 2182 .show_starget_port_name = 1, 2183 .show_starget_port_id = 1, 2184 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2185 .show_rport_dev_loss_tmo = 1, 2186 .get_fc_host_stats = fc_get_host_stats, 2187 .issue_fc_host_lip = qedf_fcoe_reset, 2188 .bsg_request = fc_lport_bsg_request, 2189 }; 2190 2191 static bool qedf_fp_has_work(struct qedf_fastpath *fp) 2192 { 2193 struct qedf_ctx *qedf = fp->qedf; 2194 struct global_queue *que; 2195 struct qed_sb_info *sb_info = fp->sb_info; 2196 struct status_block *sb = sb_info->sb_virt; 2197 u16 prod_idx; 2198 2199 /* Get the pointer to the global CQ this completion is on */ 2200 que = qedf->global_queues[fp->sb_id]; 2201 2202 /* Be sure all responses have been written to PI */ 2203 rmb(); 2204 2205 /* Get the current firmware producer index */ 2206 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2207 2208 return (que->cq_prod_idx != prod_idx); 2209 } 2210 2211 /* 2212 * Interrupt handler code. 2213 */ 2214 2215 /* Process completion queue and copy CQE contents for deferred processesing 2216 * 2217 * Return true if we should wake the I/O thread, false if not. 2218 */ 2219 static bool qedf_process_completions(struct qedf_fastpath *fp) 2220 { 2221 struct qedf_ctx *qedf = fp->qedf; 2222 struct qed_sb_info *sb_info = fp->sb_info; 2223 struct status_block *sb = sb_info->sb_virt; 2224 struct global_queue *que; 2225 u16 prod_idx; 2226 struct fcoe_cqe *cqe; 2227 struct qedf_io_work *io_work; 2228 unsigned int cpu; 2229 struct qedf_ioreq *io_req = NULL; 2230 u16 xid; 2231 u16 new_cqes; 2232 u32 comp_type; 2233 2234 /* Get the current firmware producer index */ 2235 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2236 2237 /* Get the pointer to the global CQ this completion is on */ 2238 que = qedf->global_queues[fp->sb_id]; 2239 2240 /* Calculate the amount of new elements since last processing */ 2241 new_cqes = (prod_idx >= que->cq_prod_idx) ? 2242 (prod_idx - que->cq_prod_idx) : 2243 0x10000 - que->cq_prod_idx + prod_idx; 2244 2245 /* Save producer index */ 2246 que->cq_prod_idx = prod_idx; 2247 2248 while (new_cqes) { 2249 fp->completions++; 2250 cqe = &que->cq[que->cq_cons_idx]; 2251 2252 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2253 FCOE_CQE_CQE_TYPE_MASK; 2254 2255 /* 2256 * Process unsolicited CQEs directly in the interrupt handler 2257 * sine we need the fastpath ID 2258 */ 2259 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) { 2260 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL, 2261 "Unsolicated CQE.\n"); 2262 qedf_process_unsol_compl(qedf, fp->sb_id, cqe); 2263 /* 2264 * Don't add a work list item. Increment consumer 2265 * consumer index and move on. 2266 */ 2267 goto inc_idx; 2268 } 2269 2270 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2271 io_req = &qedf->cmd_mgr->cmds[xid]; 2272 2273 /* 2274 * Figure out which percpu thread we should queue this I/O 2275 * on. 2276 */ 2277 if (!io_req) 2278 /* If there is not io_req assocated with this CQE 2279 * just queue it on CPU 0 2280 */ 2281 cpu = 0; 2282 else { 2283 cpu = io_req->cpu; 2284 io_req->int_cpu = smp_processor_id(); 2285 } 2286 2287 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC); 2288 if (!io_work) { 2289 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate " 2290 "work for I/O completion.\n"); 2291 continue; 2292 } 2293 memset(io_work, 0, sizeof(struct qedf_io_work)); 2294 2295 INIT_WORK(&io_work->work, qedf_fp_io_handler); 2296 2297 /* Copy contents of CQE for deferred processing */ 2298 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe)); 2299 2300 io_work->qedf = fp->qedf; 2301 io_work->fp = NULL; /* Only used for unsolicited frames */ 2302 2303 queue_work_on(cpu, qedf_io_wq, &io_work->work); 2304 2305 inc_idx: 2306 que->cq_cons_idx++; 2307 if (que->cq_cons_idx == fp->cq_num_entries) 2308 que->cq_cons_idx = 0; 2309 new_cqes--; 2310 } 2311 2312 return true; 2313 } 2314 2315 2316 /* MSI-X fastpath handler code */ 2317 static irqreturn_t qedf_msix_handler(int irq, void *dev_id) 2318 { 2319 struct qedf_fastpath *fp = dev_id; 2320 2321 if (!fp) { 2322 QEDF_ERR(NULL, "fp is null.\n"); 2323 return IRQ_HANDLED; 2324 } 2325 if (!fp->sb_info) { 2326 QEDF_ERR(NULL, "fp->sb_info in null."); 2327 return IRQ_HANDLED; 2328 } 2329 2330 /* 2331 * Disable interrupts for this status block while we process new 2332 * completions 2333 */ 2334 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/); 2335 2336 while (1) { 2337 qedf_process_completions(fp); 2338 2339 if (qedf_fp_has_work(fp) == 0) { 2340 /* Update the sb information */ 2341 qed_sb_update_sb_idx(fp->sb_info); 2342 2343 /* Check for more work */ 2344 rmb(); 2345 2346 if (qedf_fp_has_work(fp) == 0) { 2347 /* Re-enable interrupts */ 2348 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 2349 return IRQ_HANDLED; 2350 } 2351 } 2352 } 2353 2354 /* Do we ever want to break out of above loop? */ 2355 return IRQ_HANDLED; 2356 } 2357 2358 /* simd handler for MSI/INTa */ 2359 static void qedf_simd_int_handler(void *cookie) 2360 { 2361 /* Cookie is qedf_ctx struct */ 2362 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2363 2364 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf); 2365 } 2366 2367 #define QEDF_SIMD_HANDLER_NUM 0 2368 static void qedf_sync_free_irqs(struct qedf_ctx *qedf) 2369 { 2370 int i; 2371 u16 vector_idx = 0; 2372 u32 vector; 2373 2374 if (qedf->int_info.msix_cnt) { 2375 for (i = 0; i < qedf->int_info.used_cnt; i++) { 2376 vector_idx = i * qedf->dev_info.common.num_hwfns + 2377 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2378 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2379 "Freeing IRQ #%d vector_idx=%d.\n", 2380 i, vector_idx); 2381 vector = qedf->int_info.msix[vector_idx].vector; 2382 synchronize_irq(vector); 2383 irq_set_affinity_hint(vector, NULL); 2384 irq_set_affinity_notifier(vector, NULL); 2385 free_irq(vector, &qedf->fp_array[i]); 2386 } 2387 } else 2388 qed_ops->common->simd_handler_clean(qedf->cdev, 2389 QEDF_SIMD_HANDLER_NUM); 2390 2391 qedf->int_info.used_cnt = 0; 2392 qed_ops->common->set_fp_int(qedf->cdev, 0); 2393 } 2394 2395 static int qedf_request_msix_irq(struct qedf_ctx *qedf) 2396 { 2397 int i, rc, cpu; 2398 u16 vector_idx = 0; 2399 u32 vector; 2400 2401 cpu = cpumask_first(cpu_online_mask); 2402 for (i = 0; i < qedf->num_queues; i++) { 2403 vector_idx = i * qedf->dev_info.common.num_hwfns + 2404 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2405 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2406 "Requesting IRQ #%d vector_idx=%d.\n", 2407 i, vector_idx); 2408 vector = qedf->int_info.msix[vector_idx].vector; 2409 rc = request_irq(vector, qedf_msix_handler, 0, "qedf", 2410 &qedf->fp_array[i]); 2411 2412 if (rc) { 2413 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n"); 2414 qedf_sync_free_irqs(qedf); 2415 return rc; 2416 } 2417 2418 qedf->int_info.used_cnt++; 2419 rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu)); 2420 cpu = cpumask_next(cpu, cpu_online_mask); 2421 } 2422 2423 return 0; 2424 } 2425 2426 static int qedf_setup_int(struct qedf_ctx *qedf) 2427 { 2428 int rc = 0; 2429 2430 /* 2431 * Learn interrupt configuration 2432 */ 2433 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus()); 2434 if (rc <= 0) 2435 return 0; 2436 2437 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info); 2438 if (rc) 2439 return 0; 2440 2441 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = " 2442 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt, 2443 num_online_cpus()); 2444 2445 if (qedf->int_info.msix_cnt) 2446 return qedf_request_msix_irq(qedf); 2447 2448 qed_ops->common->simd_handler_config(qedf->cdev, &qedf, 2449 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler); 2450 qedf->int_info.used_cnt = 1; 2451 2452 QEDF_ERR(&qedf->dbg_ctx, 2453 "Cannot load driver due to a lack of MSI-X vectors.\n"); 2454 return -EINVAL; 2455 } 2456 2457 /* Main function for libfc frame reception */ 2458 static void qedf_recv_frame(struct qedf_ctx *qedf, 2459 struct sk_buff *skb) 2460 { 2461 u32 fr_len; 2462 struct fc_lport *lport; 2463 struct fc_frame_header *fh; 2464 struct fcoe_crc_eof crc_eof; 2465 struct fc_frame *fp; 2466 u8 *mac = NULL; 2467 u8 *dest_mac = NULL; 2468 struct fcoe_hdr *hp; 2469 struct qedf_rport *fcport; 2470 struct fc_lport *vn_port; 2471 u32 f_ctl; 2472 2473 lport = qedf->lport; 2474 if (lport == NULL || lport->state == LPORT_ST_DISABLED) { 2475 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n"); 2476 kfree_skb(skb); 2477 return; 2478 } 2479 2480 if (skb_is_nonlinear(skb)) 2481 skb_linearize(skb); 2482 mac = eth_hdr(skb)->h_source; 2483 dest_mac = eth_hdr(skb)->h_dest; 2484 2485 /* Pull the header */ 2486 hp = (struct fcoe_hdr *)skb->data; 2487 fh = (struct fc_frame_header *) skb_transport_header(skb); 2488 skb_pull(skb, sizeof(struct fcoe_hdr)); 2489 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 2490 2491 fp = (struct fc_frame *)skb; 2492 fc_frame_init(fp); 2493 fr_dev(fp) = lport; 2494 fr_sof(fp) = hp->fcoe_sof; 2495 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 2496 QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n"); 2497 kfree_skb(skb); 2498 return; 2499 } 2500 fr_eof(fp) = crc_eof.fcoe_eof; 2501 fr_crc(fp) = crc_eof.fcoe_crc32; 2502 if (pskb_trim(skb, fr_len)) { 2503 QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n"); 2504 kfree_skb(skb); 2505 return; 2506 } 2507 2508 fh = fc_frame_header_get(fp); 2509 2510 /* 2511 * Invalid frame filters. 2512 */ 2513 2514 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 2515 fh->fh_type == FC_TYPE_FCP) { 2516 /* Drop FCP data. We dont this in L2 path */ 2517 kfree_skb(skb); 2518 return; 2519 } 2520 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 2521 fh->fh_type == FC_TYPE_ELS) { 2522 switch (fc_frame_payload_op(fp)) { 2523 case ELS_LOGO: 2524 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 2525 /* drop non-FIP LOGO */ 2526 kfree_skb(skb); 2527 return; 2528 } 2529 break; 2530 } 2531 } 2532 2533 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 2534 /* Drop incoming ABTS */ 2535 kfree_skb(skb); 2536 return; 2537 } 2538 2539 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { 2540 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2541 "FC frame d_id mismatch with MAC %pM.\n", dest_mac); 2542 kfree_skb(skb); 2543 return; 2544 } 2545 2546 if (qedf->ctlr.state) { 2547 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) { 2548 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2549 "Wrong source address: mac:%pM dest_addr:%pM.\n", 2550 mac, qedf->ctlr.dest_addr); 2551 kfree_skb(skb); 2552 return; 2553 } 2554 } 2555 2556 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 2557 2558 /* 2559 * If the destination ID from the frame header does not match what we 2560 * have on record for lport and the search for a NPIV port came up 2561 * empty then this is not addressed to our port so simply drop it. 2562 */ 2563 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { 2564 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2565 "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n", 2566 lport->port_id, ntoh24(fh->fh_d_id)); 2567 kfree_skb(skb); 2568 return; 2569 } 2570 2571 f_ctl = ntoh24(fh->fh_f_ctl); 2572 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) && 2573 (f_ctl & FC_FC_EX_CTX)) { 2574 /* Drop incoming ABTS response that has both SEQ/EX CTX set */ 2575 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2576 "Dropping ABTS response as both SEQ/EX CTX set.\n"); 2577 kfree_skb(skb); 2578 return; 2579 } 2580 2581 /* 2582 * If a connection is uploading, drop incoming FCoE frames as there 2583 * is a small window where we could try to return a frame while libfc 2584 * is trying to clean things up. 2585 */ 2586 2587 /* Get fcport associated with d_id if it exists */ 2588 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 2589 2590 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 2591 &fcport->flags)) { 2592 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2593 "Connection uploading, dropping fp=%p.\n", fp); 2594 kfree_skb(skb); 2595 return; 2596 } 2597 2598 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: " 2599 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp, 2600 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, 2601 fh->fh_type); 2602 if (qedf_dump_frames) 2603 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 2604 1, skb->data, skb->len, false); 2605 fc_exch_recv(lport, fp); 2606 } 2607 2608 static void qedf_ll2_process_skb(struct work_struct *work) 2609 { 2610 struct qedf_skb_work *skb_work = 2611 container_of(work, struct qedf_skb_work, work); 2612 struct qedf_ctx *qedf = skb_work->qedf; 2613 struct sk_buff *skb = skb_work->skb; 2614 struct ethhdr *eh; 2615 2616 if (!qedf) { 2617 QEDF_ERR(NULL, "qedf is NULL\n"); 2618 goto err_out; 2619 } 2620 2621 eh = (struct ethhdr *)skb->data; 2622 2623 /* Undo VLAN encapsulation */ 2624 if (eh->h_proto == htons(ETH_P_8021Q)) { 2625 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); 2626 eh = skb_pull(skb, VLAN_HLEN); 2627 skb_reset_mac_header(skb); 2628 } 2629 2630 /* 2631 * Process either a FIP frame or FCoE frame based on the 2632 * protocol value. If it's not either just drop the 2633 * frame. 2634 */ 2635 if (eh->h_proto == htons(ETH_P_FIP)) { 2636 qedf_fip_recv(qedf, skb); 2637 goto out; 2638 } else if (eh->h_proto == htons(ETH_P_FCOE)) { 2639 __skb_pull(skb, ETH_HLEN); 2640 qedf_recv_frame(qedf, skb); 2641 goto out; 2642 } else 2643 goto err_out; 2644 2645 err_out: 2646 kfree_skb(skb); 2647 out: 2648 kfree(skb_work); 2649 return; 2650 } 2651 2652 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb, 2653 u32 arg1, u32 arg2) 2654 { 2655 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2656 struct qedf_skb_work *skb_work; 2657 2658 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 2659 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2660 "Dropping frame as link state is down.\n"); 2661 kfree_skb(skb); 2662 return 0; 2663 } 2664 2665 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC); 2666 if (!skb_work) { 2667 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so " 2668 "dropping frame.\n"); 2669 kfree_skb(skb); 2670 return 0; 2671 } 2672 2673 INIT_WORK(&skb_work->work, qedf_ll2_process_skb); 2674 skb_work->skb = skb; 2675 skb_work->qedf = qedf; 2676 queue_work(qedf->ll2_recv_wq, &skb_work->work); 2677 2678 return 0; 2679 } 2680 2681 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = { 2682 .rx_cb = qedf_ll2_rx, 2683 .tx_cb = NULL, 2684 }; 2685 2686 /* Main thread to process I/O completions */ 2687 void qedf_fp_io_handler(struct work_struct *work) 2688 { 2689 struct qedf_io_work *io_work = 2690 container_of(work, struct qedf_io_work, work); 2691 u32 comp_type; 2692 2693 /* 2694 * Deferred part of unsolicited CQE sends 2695 * frame to libfc. 2696 */ 2697 comp_type = (io_work->cqe.cqe_data >> 2698 FCOE_CQE_CQE_TYPE_SHIFT) & 2699 FCOE_CQE_CQE_TYPE_MASK; 2700 if (comp_type == FCOE_UNSOLIC_CQE_TYPE && 2701 io_work->fp) 2702 fc_exch_recv(io_work->qedf->lport, io_work->fp); 2703 else 2704 qedf_process_cqe(io_work->qedf, &io_work->cqe); 2705 2706 kfree(io_work); 2707 } 2708 2709 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf, 2710 struct qed_sb_info *sb_info, u16 sb_id) 2711 { 2712 struct status_block *sb_virt; 2713 dma_addr_t sb_phys; 2714 int ret; 2715 2716 sb_virt = dma_alloc_coherent(&qedf->pdev->dev, 2717 sizeof(struct status_block), &sb_phys, GFP_KERNEL); 2718 2719 if (!sb_virt) { 2720 QEDF_ERR(&qedf->dbg_ctx, 2721 "Status block allocation failed for id = %d.\n", 2722 sb_id); 2723 return -ENOMEM; 2724 } 2725 2726 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys, 2727 sb_id, QED_SB_TYPE_STORAGE); 2728 2729 if (ret) { 2730 QEDF_ERR(&qedf->dbg_ctx, 2731 "Status block initialization failed (0x%x) for id = %d.\n", 2732 ret, sb_id); 2733 return ret; 2734 } 2735 2736 return 0; 2737 } 2738 2739 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info) 2740 { 2741 if (sb_info->sb_virt) 2742 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt), 2743 (void *)sb_info->sb_virt, sb_info->sb_phys); 2744 } 2745 2746 static void qedf_destroy_sb(struct qedf_ctx *qedf) 2747 { 2748 int id; 2749 struct qedf_fastpath *fp = NULL; 2750 2751 for (id = 0; id < qedf->num_queues; id++) { 2752 fp = &(qedf->fp_array[id]); 2753 if (fp->sb_id == QEDF_SB_ID_NULL) 2754 break; 2755 qedf_free_sb(qedf, fp->sb_info); 2756 kfree(fp->sb_info); 2757 } 2758 kfree(qedf->fp_array); 2759 } 2760 2761 static int qedf_prepare_sb(struct qedf_ctx *qedf) 2762 { 2763 int id; 2764 struct qedf_fastpath *fp; 2765 int ret; 2766 2767 qedf->fp_array = 2768 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath), 2769 GFP_KERNEL); 2770 2771 if (!qedf->fp_array) { 2772 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation " 2773 "failed.\n"); 2774 return -ENOMEM; 2775 } 2776 2777 for (id = 0; id < qedf->num_queues; id++) { 2778 fp = &(qedf->fp_array[id]); 2779 fp->sb_id = QEDF_SB_ID_NULL; 2780 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL); 2781 if (!fp->sb_info) { 2782 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct " 2783 "allocation failed.\n"); 2784 goto err; 2785 } 2786 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id); 2787 if (ret) { 2788 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and " 2789 "initialization failed.\n"); 2790 goto err; 2791 } 2792 fp->sb_id = id; 2793 fp->qedf = qedf; 2794 fp->cq_num_entries = 2795 qedf->global_queues[id]->cq_mem_size / 2796 sizeof(struct fcoe_cqe); 2797 } 2798 err: 2799 return 0; 2800 } 2801 2802 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe) 2803 { 2804 u16 xid; 2805 struct qedf_ioreq *io_req; 2806 struct qedf_rport *fcport; 2807 u32 comp_type; 2808 2809 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2810 FCOE_CQE_CQE_TYPE_MASK; 2811 2812 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2813 io_req = &qedf->cmd_mgr->cmds[xid]; 2814 2815 /* Completion not for a valid I/O anymore so just return */ 2816 if (!io_req) { 2817 QEDF_ERR(&qedf->dbg_ctx, 2818 "io_req is NULL for xid=0x%x.\n", xid); 2819 return; 2820 } 2821 2822 fcport = io_req->fcport; 2823 2824 if (fcport == NULL) { 2825 QEDF_ERR(&qedf->dbg_ctx, 2826 "fcport is NULL for xid=0x%x io_req=%p.\n", 2827 xid, io_req); 2828 return; 2829 } 2830 2831 /* 2832 * Check that fcport is offloaded. If it isn't then the spinlock 2833 * isn't valid and shouldn't be taken. We should just return. 2834 */ 2835 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 2836 QEDF_ERR(&qedf->dbg_ctx, 2837 "Session not offloaded yet, fcport = %p.\n", fcport); 2838 return; 2839 } 2840 2841 2842 switch (comp_type) { 2843 case FCOE_GOOD_COMPLETION_CQE_TYPE: 2844 atomic_inc(&fcport->free_sqes); 2845 switch (io_req->cmd_type) { 2846 case QEDF_SCSI_CMD: 2847 qedf_scsi_completion(qedf, cqe, io_req); 2848 break; 2849 case QEDF_ELS: 2850 qedf_process_els_compl(qedf, cqe, io_req); 2851 break; 2852 case QEDF_TASK_MGMT_CMD: 2853 qedf_process_tmf_compl(qedf, cqe, io_req); 2854 break; 2855 case QEDF_SEQ_CLEANUP: 2856 qedf_process_seq_cleanup_compl(qedf, cqe, io_req); 2857 break; 2858 } 2859 break; 2860 case FCOE_ERROR_DETECTION_CQE_TYPE: 2861 atomic_inc(&fcport->free_sqes); 2862 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2863 "Error detect CQE.\n"); 2864 qedf_process_error_detect(qedf, cqe, io_req); 2865 break; 2866 case FCOE_EXCH_CLEANUP_CQE_TYPE: 2867 atomic_inc(&fcport->free_sqes); 2868 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2869 "Cleanup CQE.\n"); 2870 qedf_process_cleanup_compl(qedf, cqe, io_req); 2871 break; 2872 case FCOE_ABTS_CQE_TYPE: 2873 atomic_inc(&fcport->free_sqes); 2874 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2875 "Abort CQE.\n"); 2876 qedf_process_abts_compl(qedf, cqe, io_req); 2877 break; 2878 case FCOE_DUMMY_CQE_TYPE: 2879 atomic_inc(&fcport->free_sqes); 2880 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2881 "Dummy CQE.\n"); 2882 break; 2883 case FCOE_LOCAL_COMP_CQE_TYPE: 2884 atomic_inc(&fcport->free_sqes); 2885 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2886 "Local completion CQE.\n"); 2887 break; 2888 case FCOE_WARNING_CQE_TYPE: 2889 atomic_inc(&fcport->free_sqes); 2890 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2891 "Warning CQE.\n"); 2892 qedf_process_warning_compl(qedf, cqe, io_req); 2893 break; 2894 case MAX_FCOE_CQE_TYPE: 2895 atomic_inc(&fcport->free_sqes); 2896 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2897 "Max FCoE CQE.\n"); 2898 break; 2899 default: 2900 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2901 "Default CQE.\n"); 2902 break; 2903 } 2904 } 2905 2906 static void qedf_free_bdq(struct qedf_ctx *qedf) 2907 { 2908 int i; 2909 2910 if (qedf->bdq_pbl_list) 2911 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE, 2912 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma); 2913 2914 if (qedf->bdq_pbl) 2915 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size, 2916 qedf->bdq_pbl, qedf->bdq_pbl_dma); 2917 2918 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2919 if (qedf->bdq[i].buf_addr) { 2920 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE, 2921 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma); 2922 } 2923 } 2924 } 2925 2926 static void qedf_free_global_queues(struct qedf_ctx *qedf) 2927 { 2928 int i; 2929 struct global_queue **gl = qedf->global_queues; 2930 2931 for (i = 0; i < qedf->num_queues; i++) { 2932 if (!gl[i]) 2933 continue; 2934 2935 if (gl[i]->cq) 2936 dma_free_coherent(&qedf->pdev->dev, 2937 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma); 2938 if (gl[i]->cq_pbl) 2939 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size, 2940 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 2941 2942 kfree(gl[i]); 2943 } 2944 2945 qedf_free_bdq(qedf); 2946 } 2947 2948 static int qedf_alloc_bdq(struct qedf_ctx *qedf) 2949 { 2950 int i; 2951 struct scsi_bd *pbl; 2952 u64 *list; 2953 2954 /* Alloc dma memory for BDQ buffers */ 2955 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2956 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev, 2957 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL); 2958 if (!qedf->bdq[i].buf_addr) { 2959 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ " 2960 "buffer %d.\n", i); 2961 return -ENOMEM; 2962 } 2963 } 2964 2965 /* Alloc dma memory for BDQ page buffer list */ 2966 qedf->bdq_pbl_mem_size = 2967 QEDF_BDQ_SIZE * sizeof(struct scsi_bd); 2968 qedf->bdq_pbl_mem_size = 2969 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE); 2970 2971 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 2972 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL); 2973 if (!qedf->bdq_pbl) { 2974 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n"); 2975 return -ENOMEM; 2976 } 2977 2978 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2979 "BDQ PBL addr=0x%p dma=%pad\n", 2980 qedf->bdq_pbl, &qedf->bdq_pbl_dma); 2981 2982 /* 2983 * Populate BDQ PBL with physical and virtual address of individual 2984 * BDQ buffers 2985 */ 2986 pbl = (struct scsi_bd *)qedf->bdq_pbl; 2987 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2988 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma)); 2989 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma)); 2990 pbl->opaque.fcoe_opaque.hi = 0; 2991 /* Opaque lo data is an index into the BDQ array */ 2992 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i); 2993 pbl++; 2994 } 2995 2996 /* Allocate list of PBL pages */ 2997 qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev, 2998 QEDF_PAGE_SIZE, 2999 &qedf->bdq_pbl_list_dma, 3000 GFP_KERNEL); 3001 if (!qedf->bdq_pbl_list) { 3002 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n"); 3003 return -ENOMEM; 3004 } 3005 3006 /* 3007 * Now populate PBL list with pages that contain pointers to the 3008 * individual buffers. 3009 */ 3010 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size / 3011 QEDF_PAGE_SIZE; 3012 list = (u64 *)qedf->bdq_pbl_list; 3013 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) { 3014 *list = qedf->bdq_pbl_dma; 3015 list++; 3016 } 3017 3018 return 0; 3019 } 3020 3021 static int qedf_alloc_global_queues(struct qedf_ctx *qedf) 3022 { 3023 u32 *list; 3024 int i; 3025 int status; 3026 u32 *pbl; 3027 dma_addr_t page; 3028 int num_pages; 3029 3030 /* Allocate and map CQs, RQs */ 3031 /* 3032 * Number of global queues (CQ / RQ). This should 3033 * be <= number of available MSIX vectors for the PF 3034 */ 3035 if (!qedf->num_queues) { 3036 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n"); 3037 return -ENOMEM; 3038 } 3039 3040 /* 3041 * Make sure we allocated the PBL that will contain the physical 3042 * addresses of our queues 3043 */ 3044 if (!qedf->p_cpuq) { 3045 QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n"); 3046 return -EINVAL; 3047 } 3048 3049 qedf->global_queues = kzalloc((sizeof(struct global_queue *) 3050 * qedf->num_queues), GFP_KERNEL); 3051 if (!qedf->global_queues) { 3052 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global " 3053 "queues array ptr memory\n"); 3054 return -ENOMEM; 3055 } 3056 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3057 "qedf->global_queues=%p.\n", qedf->global_queues); 3058 3059 /* Allocate DMA coherent buffers for BDQ */ 3060 status = qedf_alloc_bdq(qedf); 3061 if (status) { 3062 QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n"); 3063 goto mem_alloc_failure; 3064 } 3065 3066 /* Allocate a CQ and an associated PBL for each MSI-X vector */ 3067 for (i = 0; i < qedf->num_queues; i++) { 3068 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue), 3069 GFP_KERNEL); 3070 if (!qedf->global_queues[i]) { 3071 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate " 3072 "global queue %d.\n", i); 3073 status = -ENOMEM; 3074 goto mem_alloc_failure; 3075 } 3076 3077 qedf->global_queues[i]->cq_mem_size = 3078 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3079 qedf->global_queues[i]->cq_mem_size = 3080 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE); 3081 3082 qedf->global_queues[i]->cq_pbl_size = 3083 (qedf->global_queues[i]->cq_mem_size / 3084 PAGE_SIZE) * sizeof(void *); 3085 qedf->global_queues[i]->cq_pbl_size = 3086 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE); 3087 3088 qedf->global_queues[i]->cq = 3089 dma_alloc_coherent(&qedf->pdev->dev, 3090 qedf->global_queues[i]->cq_mem_size, 3091 &qedf->global_queues[i]->cq_dma, 3092 GFP_KERNEL); 3093 3094 if (!qedf->global_queues[i]->cq) { 3095 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n"); 3096 status = -ENOMEM; 3097 goto mem_alloc_failure; 3098 } 3099 3100 qedf->global_queues[i]->cq_pbl = 3101 dma_alloc_coherent(&qedf->pdev->dev, 3102 qedf->global_queues[i]->cq_pbl_size, 3103 &qedf->global_queues[i]->cq_pbl_dma, 3104 GFP_KERNEL); 3105 3106 if (!qedf->global_queues[i]->cq_pbl) { 3107 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n"); 3108 status = -ENOMEM; 3109 goto mem_alloc_failure; 3110 } 3111 3112 /* Create PBL */ 3113 num_pages = qedf->global_queues[i]->cq_mem_size / 3114 QEDF_PAGE_SIZE; 3115 page = qedf->global_queues[i]->cq_dma; 3116 pbl = (u32 *)qedf->global_queues[i]->cq_pbl; 3117 3118 while (num_pages--) { 3119 *pbl = U64_LO(page); 3120 pbl++; 3121 *pbl = U64_HI(page); 3122 pbl++; 3123 page += QEDF_PAGE_SIZE; 3124 } 3125 /* Set the initial consumer index for cq */ 3126 qedf->global_queues[i]->cq_cons_idx = 0; 3127 } 3128 3129 list = (u32 *)qedf->p_cpuq; 3130 3131 /* 3132 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 3133 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 3134 * to the physical address which contains an array of pointers to 3135 * the physical addresses of the specific queue pages. 3136 */ 3137 for (i = 0; i < qedf->num_queues; i++) { 3138 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma); 3139 list++; 3140 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma); 3141 list++; 3142 *list = U64_LO(0); 3143 list++; 3144 *list = U64_HI(0); 3145 list++; 3146 } 3147 3148 return 0; 3149 3150 mem_alloc_failure: 3151 qedf_free_global_queues(qedf); 3152 return status; 3153 } 3154 3155 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf) 3156 { 3157 u8 sq_num_pbl_pages; 3158 u32 sq_mem_size; 3159 u32 cq_mem_size; 3160 u32 cq_num_entries; 3161 int rval; 3162 3163 /* 3164 * The number of completion queues/fastpath interrupts/status blocks 3165 * we allocation is the minimum off: 3166 * 3167 * Number of CPUs 3168 * Number allocated by qed for our PCI function 3169 */ 3170 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf); 3171 3172 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n", 3173 qedf->num_queues); 3174 3175 qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev, 3176 qedf->num_queues * sizeof(struct qedf_glbl_q_params), 3177 &qedf->hw_p_cpuq, GFP_KERNEL); 3178 3179 if (!qedf->p_cpuq) { 3180 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n"); 3181 return 1; 3182 } 3183 3184 rval = qedf_alloc_global_queues(qedf); 3185 if (rval) { 3186 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation " 3187 "failed.\n"); 3188 return 1; 3189 } 3190 3191 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */ 3192 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 3193 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE); 3194 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE); 3195 3196 /* Calculate CQ num entries */ 3197 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3198 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE); 3199 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe); 3200 3201 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params)); 3202 3203 /* Setup the value for fcoe PF */ 3204 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS; 3205 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS; 3206 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr = 3207 (u64)qedf->hw_p_cpuq; 3208 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages; 3209 3210 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0; 3211 3212 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries; 3213 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues; 3214 3215 /* log_page_size: 12 for 4KB pages */ 3216 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE); 3217 3218 qedf->pf_params.fcoe_pf_params.mtu = 9000; 3219 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI; 3220 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI; 3221 3222 /* BDQ address and size */ 3223 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] = 3224 qedf->bdq_pbl_list_dma; 3225 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] = 3226 qedf->bdq_pbl_list_num_entries; 3227 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE; 3228 3229 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3230 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n", 3231 qedf->bdq_pbl_list, 3232 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0], 3233 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]); 3234 3235 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3236 "cq_num_entries=%d.\n", 3237 qedf->pf_params.fcoe_pf_params.cq_num_entries); 3238 3239 return 0; 3240 } 3241 3242 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 3243 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf) 3244 { 3245 size_t size = 0; 3246 3247 if (qedf->p_cpuq) { 3248 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params); 3249 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq, 3250 qedf->hw_p_cpuq); 3251 } 3252 3253 qedf_free_global_queues(qedf); 3254 3255 kfree(qedf->global_queues); 3256 } 3257 3258 /* 3259 * PCI driver functions 3260 */ 3261 3262 static const struct pci_device_id qedf_pci_tbl[] = { 3263 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) }, 3264 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) }, 3265 {0} 3266 }; 3267 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl); 3268 3269 static struct pci_driver qedf_pci_driver = { 3270 .name = QEDF_MODULE_NAME, 3271 .id_table = qedf_pci_tbl, 3272 .probe = qedf_probe, 3273 .remove = qedf_remove, 3274 .shutdown = qedf_shutdown, 3275 .suspend = qedf_suspend, 3276 }; 3277 3278 static int __qedf_probe(struct pci_dev *pdev, int mode) 3279 { 3280 int rc = -EINVAL; 3281 struct fc_lport *lport; 3282 struct qedf_ctx *qedf = NULL; 3283 struct Scsi_Host *host; 3284 bool is_vf = false; 3285 struct qed_ll2_params params; 3286 char host_buf[20]; 3287 struct qed_link_params link_params; 3288 int status; 3289 void *task_start, *task_end; 3290 struct qed_slowpath_params slowpath_params; 3291 struct qed_probe_params qed_params; 3292 u16 retry_cnt = 10; 3293 3294 /* 3295 * When doing error recovery we didn't reap the lport so don't try 3296 * to reallocate it. 3297 */ 3298 retry_probe: 3299 if (mode == QEDF_MODE_RECOVERY) 3300 msleep(2000); 3301 3302 if (mode != QEDF_MODE_RECOVERY) { 3303 lport = libfc_host_alloc(&qedf_host_template, 3304 sizeof(struct qedf_ctx)); 3305 3306 if (!lport) { 3307 QEDF_ERR(NULL, "Could not allocate lport.\n"); 3308 rc = -ENOMEM; 3309 goto err0; 3310 } 3311 3312 fc_disc_init(lport); 3313 3314 /* Initialize qedf_ctx */ 3315 qedf = lport_priv(lport); 3316 set_bit(QEDF_PROBING, &qedf->flags); 3317 qedf->lport = lport; 3318 qedf->ctlr.lp = lport; 3319 qedf->pdev = pdev; 3320 qedf->dbg_ctx.pdev = pdev; 3321 qedf->dbg_ctx.host_no = lport->host->host_no; 3322 spin_lock_init(&qedf->hba_lock); 3323 INIT_LIST_HEAD(&qedf->fcports); 3324 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1; 3325 atomic_set(&qedf->num_offloads, 0); 3326 qedf->stop_io_on_error = false; 3327 pci_set_drvdata(pdev, qedf); 3328 init_completion(&qedf->fipvlan_compl); 3329 mutex_init(&qedf->stats_mutex); 3330 mutex_init(&qedf->flush_mutex); 3331 qedf->flogi_pending = 0; 3332 3333 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, 3334 "QLogic FastLinQ FCoE Module qedf %s, " 3335 "FW %d.%d.%d.%d\n", QEDF_VERSION, 3336 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 3337 FW_ENGINEERING_VERSION); 3338 } else { 3339 /* Init pointers during recovery */ 3340 qedf = pci_get_drvdata(pdev); 3341 set_bit(QEDF_PROBING, &qedf->flags); 3342 lport = qedf->lport; 3343 } 3344 3345 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n"); 3346 3347 host = lport->host; 3348 3349 /* Allocate mempool for qedf_io_work structs */ 3350 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN, 3351 qedf_io_work_cache); 3352 if (qedf->io_mempool == NULL) { 3353 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n"); 3354 goto err1; 3355 } 3356 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n", 3357 qedf->io_mempool); 3358 3359 sprintf(host_buf, "qedf_%u_link", 3360 qedf->lport->host->host_no); 3361 qedf->link_update_wq = create_workqueue(host_buf); 3362 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update); 3363 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery); 3364 INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump); 3365 INIT_DELAYED_WORK(&qedf->stag_work, qedf_stag_change_work); 3366 qedf->fipvlan_retries = qedf_fipvlan_retries; 3367 /* Set a default prio in case DCBX doesn't converge */ 3368 if (qedf_default_prio > -1) { 3369 /* 3370 * This is the case where we pass a modparam in so we want to 3371 * honor it even if dcbx doesn't converge. 3372 */ 3373 qedf->prio = qedf_default_prio; 3374 } else 3375 qedf->prio = QEDF_DEFAULT_PRIO; 3376 3377 /* 3378 * Common probe. Takes care of basic hardware init and pci_* 3379 * functions. 3380 */ 3381 memset(&qed_params, 0, sizeof(qed_params)); 3382 qed_params.protocol = QED_PROTOCOL_FCOE; 3383 qed_params.dp_module = qedf_dp_module; 3384 qed_params.dp_level = qedf_dp_level; 3385 qed_params.is_vf = is_vf; 3386 qedf->cdev = qed_ops->common->probe(pdev, &qed_params); 3387 if (!qedf->cdev) { 3388 if ((mode == QEDF_MODE_RECOVERY) && retry_cnt) { 3389 QEDF_ERR(&qedf->dbg_ctx, 3390 "Retry %d initialize hardware\n", retry_cnt); 3391 retry_cnt--; 3392 goto retry_probe; 3393 } 3394 QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n"); 3395 rc = -ENODEV; 3396 goto err1; 3397 } 3398 3399 /* Learn information crucial for qedf to progress */ 3400 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3401 if (rc) { 3402 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n"); 3403 goto err1; 3404 } 3405 3406 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 3407 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n", 3408 qedf->dev_info.common.num_hwfns, 3409 qed_ops->common->get_affin_hwfn_idx(qedf->cdev)); 3410 3411 /* queue allocation code should come here 3412 * order should be 3413 * slowpath_start 3414 * status block allocation 3415 * interrupt registration (to get min number of queues) 3416 * set_fcoe_pf_param 3417 * qed_sp_fcoe_func_start 3418 */ 3419 rc = qedf_set_fcoe_pf_param(qedf); 3420 if (rc) { 3421 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n"); 3422 goto err2; 3423 } 3424 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3425 3426 /* Learn information crucial for qedf to progress */ 3427 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3428 if (rc) { 3429 QEDF_ERR(&qedf->dbg_ctx, "Failed to fill dev info.\n"); 3430 goto err2; 3431 } 3432 3433 if (mode != QEDF_MODE_RECOVERY) { 3434 qedf->devlink = qed_ops->common->devlink_register(qedf->cdev); 3435 if (IS_ERR(qedf->devlink)) { 3436 QEDF_ERR(&qedf->dbg_ctx, "Cannot register devlink\n"); 3437 rc = PTR_ERR(qedf->devlink); 3438 qedf->devlink = NULL; 3439 goto err2; 3440 } 3441 } 3442 3443 /* Record BDQ producer doorbell addresses */ 3444 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr; 3445 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr; 3446 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3447 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod, 3448 qedf->bdq_secondary_prod); 3449 3450 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf); 3451 3452 rc = qedf_prepare_sb(qedf); 3453 if (rc) { 3454 3455 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3456 goto err2; 3457 } 3458 3459 /* Start the Slowpath-process */ 3460 slowpath_params.int_mode = QED_INT_MODE_MSIX; 3461 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER; 3462 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER; 3463 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER; 3464 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER; 3465 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE); 3466 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params); 3467 if (rc) { 3468 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3469 goto err2; 3470 } 3471 3472 /* 3473 * update_pf_params needs to be called before and after slowpath 3474 * start 3475 */ 3476 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3477 3478 /* Setup interrupts */ 3479 rc = qedf_setup_int(qedf); 3480 if (rc) { 3481 QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n"); 3482 goto err3; 3483 } 3484 3485 rc = qed_ops->start(qedf->cdev, &qedf->tasks); 3486 if (rc) { 3487 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n"); 3488 goto err4; 3489 } 3490 task_start = qedf_get_task_mem(&qedf->tasks, 0); 3491 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1); 3492 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, " 3493 "end=%p block_size=%u.\n", task_start, task_end, 3494 qedf->tasks.size); 3495 3496 /* 3497 * We need to write the number of BDs in the BDQ we've preallocated so 3498 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 3499 * packet arrives. 3500 */ 3501 qedf->bdq_prod_idx = QEDF_BDQ_SIZE; 3502 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3503 "Writing %d to primary and secondary BDQ doorbell registers.\n", 3504 qedf->bdq_prod_idx); 3505 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod); 3506 readw(qedf->bdq_primary_prod); 3507 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod); 3508 readw(qedf->bdq_secondary_prod); 3509 3510 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3511 3512 /* Now that the dev_info struct has been filled in set the MAC 3513 * address 3514 */ 3515 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac); 3516 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n", 3517 qedf->mac); 3518 3519 /* 3520 * Set the WWNN and WWPN in the following way: 3521 * 3522 * If the info we get from qed is non-zero then use that to set the 3523 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based 3524 * on the MAC address. 3525 */ 3526 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) { 3527 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3528 "Setting WWPN and WWNN from qed dev_info.\n"); 3529 qedf->wwnn = qedf->dev_info.wwnn; 3530 qedf->wwpn = qedf->dev_info.wwpn; 3531 } else { 3532 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3533 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n"); 3534 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0); 3535 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0); 3536 } 3537 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx " 3538 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn); 3539 3540 sprintf(host_buf, "host_%d", host->host_no); 3541 qed_ops->common->set_name(qedf->cdev, host_buf); 3542 3543 /* Allocate cmd mgr */ 3544 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf); 3545 if (!qedf->cmd_mgr) { 3546 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n"); 3547 rc = -ENOMEM; 3548 goto err5; 3549 } 3550 3551 if (mode != QEDF_MODE_RECOVERY) { 3552 host->transportt = qedf_fc_transport_template; 3553 host->max_lun = qedf_max_lun; 3554 host->max_cmd_len = QEDF_MAX_CDB_LEN; 3555 host->max_id = QEDF_MAX_SESSIONS; 3556 host->can_queue = FCOE_PARAMS_NUM_TASKS; 3557 rc = scsi_add_host(host, &pdev->dev); 3558 if (rc) { 3559 QEDF_WARN(&qedf->dbg_ctx, 3560 "Error adding Scsi_Host rc=0x%x.\n", rc); 3561 goto err6; 3562 } 3563 } 3564 3565 memset(¶ms, 0, sizeof(params)); 3566 params.mtu = QEDF_LL2_BUF_SIZE; 3567 ether_addr_copy(params.ll2_mac_address, qedf->mac); 3568 3569 /* Start LL2 processing thread */ 3570 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no); 3571 qedf->ll2_recv_wq = 3572 create_workqueue(host_buf); 3573 if (!qedf->ll2_recv_wq) { 3574 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n"); 3575 rc = -ENOMEM; 3576 goto err7; 3577 } 3578 3579 #ifdef CONFIG_DEBUG_FS 3580 qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops, 3581 qedf_dbg_fops); 3582 #endif 3583 3584 /* Start LL2 */ 3585 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf); 3586 rc = qed_ops->ll2->start(qedf->cdev, ¶ms); 3587 if (rc) { 3588 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n"); 3589 goto err7; 3590 } 3591 set_bit(QEDF_LL2_STARTED, &qedf->flags); 3592 3593 /* Set initial FIP/FCoE VLAN to NULL */ 3594 qedf->vlan_id = 0; 3595 3596 /* 3597 * No need to setup fcoe_ctlr or fc_lport objects during recovery since 3598 * they were not reaped during the unload process. 3599 */ 3600 if (mode != QEDF_MODE_RECOVERY) { 3601 /* Setup imbedded fcoe controller */ 3602 qedf_fcoe_ctlr_setup(qedf); 3603 3604 /* Setup lport */ 3605 rc = qedf_lport_setup(qedf); 3606 if (rc) { 3607 QEDF_ERR(&(qedf->dbg_ctx), 3608 "qedf_lport_setup failed.\n"); 3609 goto err7; 3610 } 3611 } 3612 3613 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no); 3614 qedf->timer_work_queue = 3615 create_workqueue(host_buf); 3616 if (!qedf->timer_work_queue) { 3617 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer " 3618 "workqueue.\n"); 3619 rc = -ENOMEM; 3620 goto err7; 3621 } 3622 3623 /* DPC workqueue is not reaped during recovery unload */ 3624 if (mode != QEDF_MODE_RECOVERY) { 3625 sprintf(host_buf, "qedf_%u_dpc", 3626 qedf->lport->host->host_no); 3627 qedf->dpc_wq = create_workqueue(host_buf); 3628 } 3629 INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler); 3630 3631 /* 3632 * GRC dump and sysfs parameters are not reaped during the recovery 3633 * unload process. 3634 */ 3635 if (mode != QEDF_MODE_RECOVERY) { 3636 qedf->grcdump_size = 3637 qed_ops->common->dbg_all_data_size(qedf->cdev); 3638 if (qedf->grcdump_size) { 3639 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump, 3640 qedf->grcdump_size); 3641 if (rc) { 3642 QEDF_ERR(&(qedf->dbg_ctx), 3643 "GRC Dump buffer alloc failed.\n"); 3644 qedf->grcdump = NULL; 3645 } 3646 3647 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3648 "grcdump: addr=%p, size=%u.\n", 3649 qedf->grcdump, qedf->grcdump_size); 3650 } 3651 qedf_create_sysfs_ctx_attr(qedf); 3652 3653 /* Initialize I/O tracing for this adapter */ 3654 spin_lock_init(&qedf->io_trace_lock); 3655 qedf->io_trace_idx = 0; 3656 } 3657 3658 init_completion(&qedf->flogi_compl); 3659 3660 status = qed_ops->common->update_drv_state(qedf->cdev, true); 3661 if (status) 3662 QEDF_ERR(&(qedf->dbg_ctx), 3663 "Failed to send drv state to MFW.\n"); 3664 3665 memset(&link_params, 0, sizeof(struct qed_link_params)); 3666 link_params.link_up = true; 3667 status = qed_ops->common->set_link(qedf->cdev, &link_params); 3668 if (status) 3669 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n"); 3670 3671 /* Start/restart discovery */ 3672 if (mode == QEDF_MODE_RECOVERY) 3673 fcoe_ctlr_link_up(&qedf->ctlr); 3674 else 3675 fc_fabric_login(lport); 3676 3677 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n"); 3678 3679 clear_bit(QEDF_PROBING, &qedf->flags); 3680 3681 /* All good */ 3682 return 0; 3683 3684 err7: 3685 if (qedf->ll2_recv_wq) 3686 destroy_workqueue(qedf->ll2_recv_wq); 3687 fc_remove_host(qedf->lport->host); 3688 scsi_remove_host(qedf->lport->host); 3689 #ifdef CONFIG_DEBUG_FS 3690 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3691 #endif 3692 err6: 3693 qedf_cmd_mgr_free(qedf->cmd_mgr); 3694 err5: 3695 qed_ops->stop(qedf->cdev); 3696 err4: 3697 qedf_free_fcoe_pf_param(qedf); 3698 qedf_sync_free_irqs(qedf); 3699 err3: 3700 qed_ops->common->slowpath_stop(qedf->cdev); 3701 err2: 3702 qed_ops->common->remove(qedf->cdev); 3703 err1: 3704 scsi_host_put(lport->host); 3705 err0: 3706 return rc; 3707 } 3708 3709 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id) 3710 { 3711 return __qedf_probe(pdev, QEDF_MODE_NORMAL); 3712 } 3713 3714 static void __qedf_remove(struct pci_dev *pdev, int mode) 3715 { 3716 struct qedf_ctx *qedf; 3717 int rc; 3718 3719 if (!pdev) { 3720 QEDF_ERR(NULL, "pdev is NULL.\n"); 3721 return; 3722 } 3723 3724 qedf = pci_get_drvdata(pdev); 3725 3726 /* 3727 * Prevent race where we're in board disable work and then try to 3728 * rmmod the module. 3729 */ 3730 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 3731 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n"); 3732 return; 3733 } 3734 3735 if (mode != QEDF_MODE_RECOVERY) 3736 set_bit(QEDF_UNLOADING, &qedf->flags); 3737 3738 /* Logoff the fabric to upload all connections */ 3739 if (mode == QEDF_MODE_RECOVERY) 3740 fcoe_ctlr_link_down(&qedf->ctlr); 3741 else 3742 fc_fabric_logoff(qedf->lport); 3743 3744 if (!qedf_wait_for_upload(qedf)) 3745 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 3746 3747 #ifdef CONFIG_DEBUG_FS 3748 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3749 #endif 3750 3751 /* Stop any link update handling */ 3752 cancel_delayed_work_sync(&qedf->link_update); 3753 destroy_workqueue(qedf->link_update_wq); 3754 qedf->link_update_wq = NULL; 3755 3756 if (qedf->timer_work_queue) 3757 destroy_workqueue(qedf->timer_work_queue); 3758 3759 /* Stop Light L2 */ 3760 clear_bit(QEDF_LL2_STARTED, &qedf->flags); 3761 qed_ops->ll2->stop(qedf->cdev); 3762 if (qedf->ll2_recv_wq) 3763 destroy_workqueue(qedf->ll2_recv_wq); 3764 3765 /* Stop fastpath */ 3766 qedf_sync_free_irqs(qedf); 3767 qedf_destroy_sb(qedf); 3768 3769 /* 3770 * During recovery don't destroy OS constructs that represent the 3771 * physical port. 3772 */ 3773 if (mode != QEDF_MODE_RECOVERY) { 3774 qedf_free_grc_dump_buf(&qedf->grcdump); 3775 qedf_remove_sysfs_ctx_attr(qedf); 3776 3777 /* Remove all SCSI/libfc/libfcoe structures */ 3778 fcoe_ctlr_destroy(&qedf->ctlr); 3779 fc_lport_destroy(qedf->lport); 3780 fc_remove_host(qedf->lport->host); 3781 scsi_remove_host(qedf->lport->host); 3782 } 3783 3784 qedf_cmd_mgr_free(qedf->cmd_mgr); 3785 3786 if (mode != QEDF_MODE_RECOVERY) { 3787 fc_exch_mgr_free(qedf->lport); 3788 fc_lport_free_stats(qedf->lport); 3789 3790 /* Wait for all vports to be reaped */ 3791 qedf_wait_for_vport_destroy(qedf); 3792 } 3793 3794 /* 3795 * Now that all connections have been uploaded we can stop the 3796 * rest of the qed operations 3797 */ 3798 qed_ops->stop(qedf->cdev); 3799 3800 if (mode != QEDF_MODE_RECOVERY) { 3801 if (qedf->dpc_wq) { 3802 /* Stop general DPC handling */ 3803 destroy_workqueue(qedf->dpc_wq); 3804 qedf->dpc_wq = NULL; 3805 } 3806 } 3807 3808 /* Final shutdown for the board */ 3809 qedf_free_fcoe_pf_param(qedf); 3810 if (mode != QEDF_MODE_RECOVERY) { 3811 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3812 pci_set_drvdata(pdev, NULL); 3813 } 3814 3815 rc = qed_ops->common->update_drv_state(qedf->cdev, false); 3816 if (rc) 3817 QEDF_ERR(&(qedf->dbg_ctx), 3818 "Failed to send drv state to MFW.\n"); 3819 3820 if (mode != QEDF_MODE_RECOVERY && qedf->devlink) { 3821 qed_ops->common->devlink_unregister(qedf->devlink); 3822 qedf->devlink = NULL; 3823 } 3824 3825 qed_ops->common->slowpath_stop(qedf->cdev); 3826 qed_ops->common->remove(qedf->cdev); 3827 3828 mempool_destroy(qedf->io_mempool); 3829 3830 /* Only reap the Scsi_host on a real removal */ 3831 if (mode != QEDF_MODE_RECOVERY) 3832 scsi_host_put(qedf->lport->host); 3833 } 3834 3835 static void qedf_remove(struct pci_dev *pdev) 3836 { 3837 /* Check to make sure this function wasn't already disabled */ 3838 if (!atomic_read(&pdev->enable_cnt)) 3839 return; 3840 3841 __qedf_remove(pdev, QEDF_MODE_NORMAL); 3842 } 3843 3844 void qedf_wq_grcdump(struct work_struct *work) 3845 { 3846 struct qedf_ctx *qedf = 3847 container_of(work, struct qedf_ctx, grcdump_work.work); 3848 3849 QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n"); 3850 qedf_capture_grc_dump(qedf); 3851 } 3852 3853 void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type) 3854 { 3855 struct qedf_ctx *qedf = dev; 3856 3857 QEDF_ERR(&(qedf->dbg_ctx), 3858 "Hardware error handler scheduled, event=%d.\n", 3859 err_type); 3860 3861 if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) { 3862 QEDF_ERR(&(qedf->dbg_ctx), 3863 "Already in recovery, not scheduling board disable work.\n"); 3864 return; 3865 } 3866 3867 switch (err_type) { 3868 case QED_HW_ERR_FAN_FAIL: 3869 schedule_delayed_work(&qedf->board_disable_work, 0); 3870 break; 3871 case QED_HW_ERR_MFW_RESP_FAIL: 3872 case QED_HW_ERR_HW_ATTN: 3873 case QED_HW_ERR_DMAE_FAIL: 3874 case QED_HW_ERR_FW_ASSERT: 3875 /* Prevent HW attentions from being reasserted */ 3876 qed_ops->common->attn_clr_enable(qedf->cdev, true); 3877 break; 3878 case QED_HW_ERR_RAMROD_FAIL: 3879 /* Prevent HW attentions from being reasserted */ 3880 qed_ops->common->attn_clr_enable(qedf->cdev, true); 3881 3882 if (qedf_enable_recovery && qedf->devlink) 3883 qed_ops->common->report_fatal_error(qedf->devlink, 3884 err_type); 3885 3886 break; 3887 default: 3888 break; 3889 } 3890 } 3891 3892 /* 3893 * Protocol TLV handler 3894 */ 3895 void qedf_get_protocol_tlv_data(void *dev, void *data) 3896 { 3897 struct qedf_ctx *qedf = dev; 3898 struct qed_mfw_tlv_fcoe *fcoe = data; 3899 struct fc_lport *lport; 3900 struct Scsi_Host *host; 3901 struct fc_host_attrs *fc_host; 3902 struct fc_host_statistics *hst; 3903 3904 if (!qedf) { 3905 QEDF_ERR(NULL, "qedf is null.\n"); 3906 return; 3907 } 3908 3909 if (test_bit(QEDF_PROBING, &qedf->flags)) { 3910 QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n"); 3911 return; 3912 } 3913 3914 lport = qedf->lport; 3915 host = lport->host; 3916 fc_host = shost_to_fc_host(host); 3917 3918 /* Force a refresh of the fc_host stats including offload stats */ 3919 hst = qedf_fc_get_host_stats(host); 3920 3921 fcoe->qos_pri_set = true; 3922 fcoe->qos_pri = 3; /* Hard coded to 3 in driver */ 3923 3924 fcoe->ra_tov_set = true; 3925 fcoe->ra_tov = lport->r_a_tov; 3926 3927 fcoe->ed_tov_set = true; 3928 fcoe->ed_tov = lport->e_d_tov; 3929 3930 fcoe->npiv_state_set = true; 3931 fcoe->npiv_state = 1; /* NPIV always enabled */ 3932 3933 fcoe->num_npiv_ids_set = true; 3934 fcoe->num_npiv_ids = fc_host->npiv_vports_inuse; 3935 3936 /* Certain attributes we only want to set if we've selected an FCF */ 3937 if (qedf->ctlr.sel_fcf) { 3938 fcoe->switch_name_set = true; 3939 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name); 3940 } 3941 3942 fcoe->port_state_set = true; 3943 /* For qedf we're either link down or fabric attach */ 3944 if (lport->link_up) 3945 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC; 3946 else 3947 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE; 3948 3949 fcoe->link_failures_set = true; 3950 fcoe->link_failures = (u16)hst->link_failure_count; 3951 3952 fcoe->fcoe_txq_depth_set = true; 3953 fcoe->fcoe_rxq_depth_set = true; 3954 fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS; 3955 fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS; 3956 3957 fcoe->fcoe_rx_frames_set = true; 3958 fcoe->fcoe_rx_frames = hst->rx_frames; 3959 3960 fcoe->fcoe_tx_frames_set = true; 3961 fcoe->fcoe_tx_frames = hst->tx_frames; 3962 3963 fcoe->fcoe_rx_bytes_set = true; 3964 fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000; 3965 3966 fcoe->fcoe_tx_bytes_set = true; 3967 fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000; 3968 3969 fcoe->crc_count_set = true; 3970 fcoe->crc_count = hst->invalid_crc_count; 3971 3972 fcoe->tx_abts_set = true; 3973 fcoe->tx_abts = hst->fcp_packet_aborts; 3974 3975 fcoe->tx_lun_rst_set = true; 3976 fcoe->tx_lun_rst = qedf->lun_resets; 3977 3978 fcoe->abort_task_sets_set = true; 3979 fcoe->abort_task_sets = qedf->packet_aborts; 3980 3981 fcoe->scsi_busy_set = true; 3982 fcoe->scsi_busy = qedf->busy; 3983 3984 fcoe->scsi_tsk_full_set = true; 3985 fcoe->scsi_tsk_full = qedf->task_set_fulls; 3986 } 3987 3988 /* Deferred work function to perform soft context reset on STAG change */ 3989 void qedf_stag_change_work(struct work_struct *work) 3990 { 3991 struct qedf_ctx *qedf = 3992 container_of(work, struct qedf_ctx, stag_work.work); 3993 3994 printk_ratelimited("[%s]:[%s:%d]:%d: Performing software context reset.", 3995 dev_name(&qedf->pdev->dev), __func__, __LINE__, 3996 qedf->dbg_ctx.host_no); 3997 qedf_ctx_soft_reset(qedf->lport); 3998 } 3999 4000 static void qedf_shutdown(struct pci_dev *pdev) 4001 { 4002 __qedf_remove(pdev, QEDF_MODE_NORMAL); 4003 } 4004 4005 static int qedf_suspend(struct pci_dev *pdev, pm_message_t state) 4006 { 4007 struct qedf_ctx *qedf; 4008 4009 if (!pdev) { 4010 QEDF_ERR(NULL, "pdev is NULL.\n"); 4011 return -ENODEV; 4012 } 4013 4014 qedf = pci_get_drvdata(pdev); 4015 4016 QEDF_ERR(&qedf->dbg_ctx, "%s: Device does not support suspend operation\n", __func__); 4017 4018 return -EPERM; 4019 } 4020 4021 /* 4022 * Recovery handler code 4023 */ 4024 static void qedf_schedule_recovery_handler(void *dev) 4025 { 4026 struct qedf_ctx *qedf = dev; 4027 4028 QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n"); 4029 schedule_delayed_work(&qedf->recovery_work, 0); 4030 } 4031 4032 static void qedf_recovery_handler(struct work_struct *work) 4033 { 4034 struct qedf_ctx *qedf = 4035 container_of(work, struct qedf_ctx, recovery_work.work); 4036 4037 if (test_and_set_bit(QEDF_IN_RECOVERY, &qedf->flags)) 4038 return; 4039 4040 /* 4041 * Call common_ops->recovery_prolog to allow the MFW to quiesce 4042 * any PCI transactions. 4043 */ 4044 qed_ops->common->recovery_prolog(qedf->cdev); 4045 4046 QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n"); 4047 __qedf_remove(qedf->pdev, QEDF_MODE_RECOVERY); 4048 /* 4049 * Reset link and dcbx to down state since we will not get a link down 4050 * event from the MFW but calling __qedf_remove will essentially be a 4051 * link down event. 4052 */ 4053 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 4054 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 4055 __qedf_probe(qedf->pdev, QEDF_MODE_RECOVERY); 4056 clear_bit(QEDF_IN_RECOVERY, &qedf->flags); 4057 QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n"); 4058 } 4059 4060 /* Generic TLV data callback */ 4061 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 4062 { 4063 struct qedf_ctx *qedf; 4064 4065 if (!dev) { 4066 QEDF_INFO(NULL, QEDF_LOG_EVT, 4067 "dev is NULL so ignoring get_generic_tlv_data request.\n"); 4068 return; 4069 } 4070 qedf = (struct qedf_ctx *)dev; 4071 4072 memset(data, 0, sizeof(struct qed_generic_tlvs)); 4073 ether_addr_copy(data->mac[0], qedf->mac); 4074 } 4075 4076 /* 4077 * Module Init/Remove 4078 */ 4079 4080 static int __init qedf_init(void) 4081 { 4082 int ret; 4083 4084 /* If debug=1 passed, set the default log mask */ 4085 if (qedf_debug == QEDF_LOG_DEFAULT) 4086 qedf_debug = QEDF_DEFAULT_LOG_MASK; 4087 4088 /* 4089 * Check that default prio for FIP/FCoE traffic is between 0..7 if a 4090 * value has been set 4091 */ 4092 if (qedf_default_prio > -1) 4093 if (qedf_default_prio > 7) { 4094 qedf_default_prio = QEDF_DEFAULT_PRIO; 4095 QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n", 4096 QEDF_DEFAULT_PRIO); 4097 } 4098 4099 /* Print driver banner */ 4100 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR, 4101 QEDF_VERSION); 4102 4103 /* Create kmem_cache for qedf_io_work structs */ 4104 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache", 4105 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL); 4106 if (qedf_io_work_cache == NULL) { 4107 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n"); 4108 goto err1; 4109 } 4110 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n", 4111 qedf_io_work_cache); 4112 4113 qed_ops = qed_get_fcoe_ops(); 4114 if (!qed_ops) { 4115 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n"); 4116 goto err1; 4117 } 4118 4119 #ifdef CONFIG_DEBUG_FS 4120 qedf_dbg_init("qedf"); 4121 #endif 4122 4123 qedf_fc_transport_template = 4124 fc_attach_transport(&qedf_fc_transport_fn); 4125 if (!qedf_fc_transport_template) { 4126 QEDF_ERR(NULL, "Could not register with FC transport\n"); 4127 goto err2; 4128 } 4129 4130 qedf_fc_vport_transport_template = 4131 fc_attach_transport(&qedf_fc_vport_transport_fn); 4132 if (!qedf_fc_vport_transport_template) { 4133 QEDF_ERR(NULL, "Could not register vport template with FC " 4134 "transport\n"); 4135 goto err3; 4136 } 4137 4138 qedf_io_wq = create_workqueue("qedf_io_wq"); 4139 if (!qedf_io_wq) { 4140 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n"); 4141 goto err4; 4142 } 4143 4144 qedf_cb_ops.get_login_failures = qedf_get_login_failures; 4145 4146 ret = pci_register_driver(&qedf_pci_driver); 4147 if (ret) { 4148 QEDF_ERR(NULL, "Failed to register driver\n"); 4149 goto err5; 4150 } 4151 4152 return 0; 4153 4154 err5: 4155 destroy_workqueue(qedf_io_wq); 4156 err4: 4157 fc_release_transport(qedf_fc_vport_transport_template); 4158 err3: 4159 fc_release_transport(qedf_fc_transport_template); 4160 err2: 4161 #ifdef CONFIG_DEBUG_FS 4162 qedf_dbg_exit(); 4163 #endif 4164 qed_put_fcoe_ops(); 4165 err1: 4166 return -EINVAL; 4167 } 4168 4169 static void __exit qedf_cleanup(void) 4170 { 4171 pci_unregister_driver(&qedf_pci_driver); 4172 4173 destroy_workqueue(qedf_io_wq); 4174 4175 fc_release_transport(qedf_fc_vport_transport_template); 4176 fc_release_transport(qedf_fc_transport_template); 4177 #ifdef CONFIG_DEBUG_FS 4178 qedf_dbg_exit(); 4179 #endif 4180 qed_put_fcoe_ops(); 4181 4182 kmem_cache_destroy(qedf_io_work_cache); 4183 } 4184 4185 MODULE_LICENSE("GPL"); 4186 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module"); 4187 MODULE_AUTHOR("QLogic Corporation"); 4188 MODULE_VERSION(QEDF_VERSION); 4189 module_init(qedf_init); 4190 module_exit(qedf_cleanup); 4191