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 35 /* 36 * Driver module parameters. 37 */ 38 static unsigned int qedf_dev_loss_tmo = 60; 39 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO); 40 MODULE_PARM_DESC(dev_loss_tmo, " dev_loss_tmo setting for attached " 41 "remote ports (default 60)"); 42 43 uint qedf_debug = QEDF_LOG_INFO; 44 module_param_named(debug, qedf_debug, uint, S_IRUGO|S_IWUSR); 45 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging" 46 " mask"); 47 48 static uint qedf_fipvlan_retries = 60; 49 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO); 50 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt " 51 "before giving up (default 60)"); 52 53 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN; 54 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO); 55 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails " 56 "(default 1002)."); 57 58 static int qedf_default_prio = -1; 59 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO); 60 MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE" 61 " traffic (value between 0 and 7, default 3)."); 62 63 uint qedf_dump_frames; 64 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR); 65 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames " 66 "(default off)"); 67 68 static uint qedf_queue_depth; 69 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO); 70 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered " 71 "by the qedf driver. Default is 0 (use OS default)."); 72 73 uint qedf_io_tracing; 74 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR); 75 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions " 76 "into trace buffer. (default off)."); 77 78 static uint qedf_max_lun = MAX_FIBRE_LUNS; 79 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO); 80 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver " 81 "supports. (default 0xffffffff)"); 82 83 uint qedf_link_down_tmo; 84 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO); 85 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the " 86 "link is down by N seconds."); 87 88 bool qedf_retry_delay; 89 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR); 90 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry " 91 "delay handling (default off)."); 92 93 static bool qedf_dcbx_no_wait; 94 module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR); 95 MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start " 96 "sending FIP VLAN requests on link up (Default: off)."); 97 98 static uint qedf_dp_module; 99 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO); 100 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed " 101 "qed module during probe."); 102 103 static uint qedf_dp_level = QED_LEVEL_NOTICE; 104 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO); 105 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module " 106 "during probe (0-3: 0 more verbose)."); 107 108 static bool qedf_enable_recovery = true; 109 module_param_named(enable_recovery, qedf_enable_recovery, 110 bool, S_IRUGO | S_IWUSR); 111 MODULE_PARM_DESC(enable_recovery, "Enable/disable recovery on driver/firmware " 112 "interface level errors 0 = Disabled, 1 = Enabled (Default: 1)."); 113 114 struct workqueue_struct *qedf_io_wq; 115 116 static struct fcoe_percpu_s qedf_global; 117 static DEFINE_SPINLOCK(qedf_global_lock); 118 119 static struct kmem_cache *qedf_io_work_cache; 120 121 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id) 122 { 123 int vlan_id_tmp = 0; 124 125 vlan_id_tmp = vlan_id | (qedf->prio << VLAN_PRIO_SHIFT); 126 qedf->vlan_id = vlan_id_tmp; 127 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 128 "Setting vlan_id=0x%04x prio=%d.\n", 129 vlan_id_tmp, qedf->prio); 130 } 131 132 /* Returns true if we have a valid vlan, false otherwise */ 133 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf) 134 { 135 136 while (qedf->fipvlan_retries--) { 137 /* This is to catch if link goes down during fipvlan retries */ 138 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 139 QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n"); 140 return false; 141 } 142 143 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 144 QEDF_ERR(&qedf->dbg_ctx, "Driver unloading.\n"); 145 return false; 146 } 147 148 if (qedf->vlan_id > 0) { 149 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 150 "vlan = 0x%x already set, calling ctlr_link_up.\n", 151 qedf->vlan_id); 152 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) 153 fcoe_ctlr_link_up(&qedf->ctlr); 154 return true; 155 } 156 157 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 158 "Retry %d.\n", qedf->fipvlan_retries); 159 init_completion(&qedf->fipvlan_compl); 160 qedf_fcoe_send_vlan_req(qedf); 161 wait_for_completion_timeout(&qedf->fipvlan_compl, 1 * HZ); 162 } 163 164 return false; 165 } 166 167 static void qedf_handle_link_update(struct work_struct *work) 168 { 169 struct qedf_ctx *qedf = 170 container_of(work, struct qedf_ctx, link_update.work); 171 int rc; 172 173 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n", 174 atomic_read(&qedf->link_state)); 175 176 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 177 rc = qedf_initiate_fipvlan_req(qedf); 178 if (rc) 179 return; 180 181 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 182 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 183 "Link is down, resetting vlan_id.\n"); 184 qedf->vlan_id = 0; 185 return; 186 } 187 188 /* 189 * If we get here then we never received a repsonse to our 190 * fip vlan request so set the vlan_id to the default and 191 * tell FCoE that the link is up 192 */ 193 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN " 194 "response, falling back to default VLAN %d.\n", 195 qedf_fallback_vlan); 196 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 197 198 /* 199 * Zero out data_src_addr so we'll update it with the new 200 * lport port_id 201 */ 202 eth_zero_addr(qedf->data_src_addr); 203 fcoe_ctlr_link_up(&qedf->ctlr); 204 } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 205 /* 206 * If we hit here and link_down_tmo_valid is still 1 it means 207 * that link_down_tmo timed out so set it to 0 to make sure any 208 * other readers have accurate state. 209 */ 210 atomic_set(&qedf->link_down_tmo_valid, 0); 211 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 212 "Calling fcoe_ctlr_link_down().\n"); 213 fcoe_ctlr_link_down(&qedf->ctlr); 214 if (qedf_wait_for_upload(qedf) == false) 215 QEDF_ERR(&qedf->dbg_ctx, 216 "Could not upload all sessions.\n"); 217 /* Reset the number of FIP VLAN retries */ 218 qedf->fipvlan_retries = qedf_fipvlan_retries; 219 } 220 } 221 222 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1 223 #define QEDF_FCOE_MAC_METHOD_FCF_MAP 2 224 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3 225 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp) 226 { 227 u8 *granted_mac; 228 struct fc_frame_header *fh = fc_frame_header_get(fp); 229 u8 fc_map[3]; 230 int method = 0; 231 232 /* Get granted MAC address from FIP FLOGI payload */ 233 granted_mac = fr_cb(fp)->granted_mac; 234 235 /* 236 * We set the source MAC for FCoE traffic based on the Granted MAC 237 * address from the switch. 238 * 239 * If granted_mac is non-zero, we used that. 240 * If the granted_mac is zeroed out, created the FCoE MAC based on 241 * the sel_fcf->fc_map and the d_id fo the FLOGI frame. 242 * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the 243 * d_id of the FLOGI frame. 244 */ 245 if (!is_zero_ether_addr(granted_mac)) { 246 ether_addr_copy(qedf->data_src_addr, granted_mac); 247 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC; 248 } else if (qedf->ctlr.sel_fcf->fc_map != 0) { 249 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map); 250 qedf->data_src_addr[0] = fc_map[0]; 251 qedf->data_src_addr[1] = fc_map[1]; 252 qedf->data_src_addr[2] = fc_map[2]; 253 qedf->data_src_addr[3] = fh->fh_d_id[0]; 254 qedf->data_src_addr[4] = fh->fh_d_id[1]; 255 qedf->data_src_addr[5] = fh->fh_d_id[2]; 256 method = QEDF_FCOE_MAC_METHOD_FCF_MAP; 257 } else { 258 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id); 259 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC; 260 } 261 262 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 263 "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method); 264 } 265 266 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp, 267 void *arg) 268 { 269 struct fc_exch *exch = fc_seq_exch(seq); 270 struct fc_lport *lport = exch->lp; 271 struct qedf_ctx *qedf = lport_priv(lport); 272 273 if (!qedf) { 274 QEDF_ERR(NULL, "qedf is NULL.\n"); 275 return; 276 } 277 278 /* 279 * If ERR_PTR is set then don't try to stat anything as it will cause 280 * a crash when we access fp. 281 */ 282 if (IS_ERR(fp)) { 283 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 284 "fp has IS_ERR() set.\n"); 285 goto skip_stat; 286 } 287 288 /* Log stats for FLOGI reject */ 289 if (fc_frame_payload_op(fp) == ELS_LS_RJT) 290 qedf->flogi_failed++; 291 else if (fc_frame_payload_op(fp) == ELS_LS_ACC) { 292 /* Set the source MAC we will use for FCoE traffic */ 293 qedf_set_data_src_addr(qedf, fp); 294 qedf->flogi_pending = 0; 295 } 296 297 /* Complete flogi_compl so we can proceed to sending ADISCs */ 298 complete(&qedf->flogi_compl); 299 300 skip_stat: 301 /* Report response to libfc */ 302 fc_lport_flogi_resp(seq, fp, lport); 303 } 304 305 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did, 306 struct fc_frame *fp, unsigned int op, 307 void (*resp)(struct fc_seq *, 308 struct fc_frame *, 309 void *), 310 void *arg, u32 timeout) 311 { 312 struct qedf_ctx *qedf = lport_priv(lport); 313 314 /* 315 * Intercept FLOGI for statistic purposes. Note we use the resp 316 * callback to tell if this is really a flogi. 317 */ 318 if (resp == fc_lport_flogi_resp) { 319 qedf->flogi_cnt++; 320 if (qedf->flogi_pending >= QEDF_FLOGI_RETRY_CNT) { 321 schedule_delayed_work(&qedf->stag_work, 2); 322 return NULL; 323 } 324 qedf->flogi_pending++; 325 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp, 326 arg, timeout); 327 } 328 329 return fc_elsct_send(lport, did, fp, op, resp, arg, timeout); 330 } 331 332 int qedf_send_flogi(struct qedf_ctx *qedf) 333 { 334 struct fc_lport *lport; 335 struct fc_frame *fp; 336 337 lport = qedf->lport; 338 339 if (!lport->tt.elsct_send) { 340 QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n"); 341 return -EINVAL; 342 } 343 344 fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); 345 if (!fp) { 346 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n"); 347 return -ENOMEM; 348 } 349 350 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 351 "Sending FLOGI to reestablish session with switch.\n"); 352 lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, 353 ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov); 354 355 init_completion(&qedf->flogi_compl); 356 357 return 0; 358 } 359 360 /* 361 * This function is called if link_down_tmo is in use. If we get a link up and 362 * link_down_tmo has not expired then use just FLOGI/ADISC to recover our 363 * sessions with targets. Otherwise, just call fcoe_ctlr_link_up(). 364 */ 365 static void qedf_link_recovery(struct work_struct *work) 366 { 367 struct qedf_ctx *qedf = 368 container_of(work, struct qedf_ctx, link_recovery.work); 369 struct fc_lport *lport = qedf->lport; 370 struct fc_rport_priv *rdata; 371 bool rc; 372 int retries = 30; 373 int rval, i; 374 struct list_head rdata_login_list; 375 376 INIT_LIST_HEAD(&rdata_login_list); 377 378 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 379 "Link down tmo did not expire.\n"); 380 381 /* 382 * Essentially reset the fcoe_ctlr here without affecting the state 383 * of the libfc structs. 384 */ 385 qedf->ctlr.state = FIP_ST_LINK_WAIT; 386 fcoe_ctlr_link_down(&qedf->ctlr); 387 388 /* 389 * Bring the link up before we send the fipvlan request so libfcoe 390 * can select a new fcf in parallel 391 */ 392 fcoe_ctlr_link_up(&qedf->ctlr); 393 394 /* Since the link when down and up to verify which vlan we're on */ 395 qedf->fipvlan_retries = qedf_fipvlan_retries; 396 rc = qedf_initiate_fipvlan_req(qedf); 397 /* If getting the VLAN fails, set the VLAN to the fallback one */ 398 if (!rc) 399 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 400 401 /* 402 * We need to wait for an FCF to be selected due to the 403 * fcoe_ctlr_link_up other the FLOGI will be rejected. 404 */ 405 while (retries > 0) { 406 if (qedf->ctlr.sel_fcf) { 407 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 408 "FCF reselected, proceeding with FLOGI.\n"); 409 break; 410 } 411 msleep(500); 412 retries--; 413 } 414 415 if (retries < 1) { 416 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for " 417 "FCF selection.\n"); 418 return; 419 } 420 421 rval = qedf_send_flogi(qedf); 422 if (rval) 423 return; 424 425 /* Wait for FLOGI completion before proceeding with sending ADISCs */ 426 i = wait_for_completion_timeout(&qedf->flogi_compl, 427 qedf->lport->r_a_tov); 428 if (i == 0) { 429 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n"); 430 return; 431 } 432 433 /* 434 * Call lport->tt.rport_login which will cause libfc to send an 435 * ADISC since the rport is in state ready. 436 */ 437 mutex_lock(&lport->disc.disc_mutex); 438 list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) { 439 if (kref_get_unless_zero(&rdata->kref)) { 440 fc_rport_login(rdata); 441 kref_put(&rdata->kref, fc_rport_destroy); 442 } 443 } 444 mutex_unlock(&lport->disc.disc_mutex); 445 } 446 447 static void qedf_update_link_speed(struct qedf_ctx *qedf, 448 struct qed_link_output *link) 449 { 450 __ETHTOOL_DECLARE_LINK_MODE_MASK(sup_caps); 451 struct fc_lport *lport = qedf->lport; 452 453 lport->link_speed = FC_PORTSPEED_UNKNOWN; 454 lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN; 455 456 /* Set fc_host link speed */ 457 switch (link->speed) { 458 case 10000: 459 lport->link_speed = FC_PORTSPEED_10GBIT; 460 break; 461 case 25000: 462 lport->link_speed = FC_PORTSPEED_25GBIT; 463 break; 464 case 40000: 465 lport->link_speed = FC_PORTSPEED_40GBIT; 466 break; 467 case 50000: 468 lport->link_speed = FC_PORTSPEED_50GBIT; 469 break; 470 case 100000: 471 lport->link_speed = FC_PORTSPEED_100GBIT; 472 break; 473 case 20000: 474 lport->link_speed = FC_PORTSPEED_20GBIT; 475 break; 476 default: 477 lport->link_speed = FC_PORTSPEED_UNKNOWN; 478 break; 479 } 480 481 /* 482 * Set supported link speed by querying the supported 483 * capabilities of the link. 484 */ 485 486 phylink_zero(sup_caps); 487 phylink_set(sup_caps, 10000baseT_Full); 488 phylink_set(sup_caps, 10000baseKX4_Full); 489 phylink_set(sup_caps, 10000baseR_FEC); 490 phylink_set(sup_caps, 10000baseCR_Full); 491 phylink_set(sup_caps, 10000baseSR_Full); 492 phylink_set(sup_caps, 10000baseLR_Full); 493 phylink_set(sup_caps, 10000baseLRM_Full); 494 phylink_set(sup_caps, 10000baseKR_Full); 495 496 if (linkmode_intersects(link->supported_caps, sup_caps)) 497 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT; 498 499 phylink_zero(sup_caps); 500 phylink_set(sup_caps, 25000baseKR_Full); 501 phylink_set(sup_caps, 25000baseCR_Full); 502 phylink_set(sup_caps, 25000baseSR_Full); 503 504 if (linkmode_intersects(link->supported_caps, sup_caps)) 505 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT; 506 507 phylink_zero(sup_caps); 508 phylink_set(sup_caps, 40000baseLR4_Full); 509 phylink_set(sup_caps, 40000baseKR4_Full); 510 phylink_set(sup_caps, 40000baseCR4_Full); 511 phylink_set(sup_caps, 40000baseSR4_Full); 512 513 if (linkmode_intersects(link->supported_caps, sup_caps)) 514 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT; 515 516 phylink_zero(sup_caps); 517 phylink_set(sup_caps, 50000baseKR2_Full); 518 phylink_set(sup_caps, 50000baseCR2_Full); 519 phylink_set(sup_caps, 50000baseSR2_Full); 520 521 if (linkmode_intersects(link->supported_caps, sup_caps)) 522 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT; 523 524 phylink_zero(sup_caps); 525 phylink_set(sup_caps, 100000baseKR4_Full); 526 phylink_set(sup_caps, 100000baseSR4_Full); 527 phylink_set(sup_caps, 100000baseCR4_Full); 528 phylink_set(sup_caps, 100000baseLR4_ER4_Full); 529 530 if (linkmode_intersects(link->supported_caps, sup_caps)) 531 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT; 532 533 phylink_zero(sup_caps); 534 phylink_set(sup_caps, 20000baseKR2_Full); 535 536 if (linkmode_intersects(link->supported_caps, sup_caps)) 537 lport->link_supported_speeds |= FC_PORTSPEED_20GBIT; 538 539 if (lport->host && lport->host->shost_data) 540 fc_host_supported_speeds(lport->host) = 541 lport->link_supported_speeds; 542 } 543 544 static void qedf_bw_update(void *dev) 545 { 546 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 547 struct qed_link_output link; 548 549 /* Get the latest status of the link */ 550 qed_ops->common->get_link(qedf->cdev, &link); 551 552 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 553 QEDF_ERR(&qedf->dbg_ctx, 554 "Ignore link update, driver getting unload.\n"); 555 return; 556 } 557 558 if (link.link_up) { 559 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) 560 qedf_update_link_speed(qedf, &link); 561 else 562 QEDF_ERR(&qedf->dbg_ctx, 563 "Ignore bw update, link is down.\n"); 564 565 } else { 566 QEDF_ERR(&qedf->dbg_ctx, "link_up is not set.\n"); 567 } 568 } 569 570 static void qedf_link_update(void *dev, struct qed_link_output *link) 571 { 572 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 573 574 /* 575 * Prevent race where we're removing the module and we get link update 576 * for qed. 577 */ 578 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 579 QEDF_ERR(&qedf->dbg_ctx, 580 "Ignore link update, driver getting unload.\n"); 581 return; 582 } 583 584 if (link->link_up) { 585 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 586 QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC, 587 "Ignoring link up event as link is already up.\n"); 588 return; 589 } 590 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n", 591 link->speed / 1000); 592 593 /* Cancel any pending link down work */ 594 cancel_delayed_work(&qedf->link_update); 595 596 atomic_set(&qedf->link_state, QEDF_LINK_UP); 597 qedf_update_link_speed(qedf, link); 598 599 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE || 600 qedf_dcbx_no_wait) { 601 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 602 "DCBx done.\n"); 603 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 604 queue_delayed_work(qedf->link_update_wq, 605 &qedf->link_recovery, 0); 606 else 607 queue_delayed_work(qedf->link_update_wq, 608 &qedf->link_update, 0); 609 atomic_set(&qedf->link_down_tmo_valid, 0); 610 } 611 612 } else { 613 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n"); 614 615 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 616 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 617 /* 618 * Flag that we're waiting for the link to come back up before 619 * informing the fcoe layer of the event. 620 */ 621 if (qedf_link_down_tmo > 0) { 622 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 623 "Starting link down tmo.\n"); 624 atomic_set(&qedf->link_down_tmo_valid, 1); 625 } 626 qedf->vlan_id = 0; 627 qedf_update_link_speed(qedf, link); 628 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 629 qedf_link_down_tmo * HZ); 630 } 631 } 632 633 634 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type) 635 { 636 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 637 u8 tmp_prio; 638 639 QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe " 640 "prio=%d.\n", get->operational.valid, get->operational.enabled, 641 get->operational.app_prio.fcoe); 642 643 if (get->operational.enabled && get->operational.valid) { 644 /* If DCBX was already negotiated on link up then just exit */ 645 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) { 646 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 647 "DCBX already set on link up.\n"); 648 return; 649 } 650 651 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE); 652 653 /* 654 * Set the 8021q priority in the following manner: 655 * 656 * 1. If a modparam is set use that 657 * 2. If the value is not between 0..7 use the default 658 * 3. Use the priority we get from the DCBX app tag 659 */ 660 tmp_prio = get->operational.app_prio.fcoe; 661 if (qedf_default_prio > -1) 662 qedf->prio = qedf_default_prio; 663 else if (tmp_prio > 7) { 664 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 665 "FIP/FCoE prio %d out of range, setting to %d.\n", 666 tmp_prio, QEDF_DEFAULT_PRIO); 667 qedf->prio = QEDF_DEFAULT_PRIO; 668 } else 669 qedf->prio = tmp_prio; 670 671 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP && 672 !qedf_dcbx_no_wait) { 673 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 674 queue_delayed_work(qedf->link_update_wq, 675 &qedf->link_recovery, 0); 676 else 677 queue_delayed_work(qedf->link_update_wq, 678 &qedf->link_update, 0); 679 atomic_set(&qedf->link_down_tmo_valid, 0); 680 } 681 } 682 683 } 684 685 static u32 qedf_get_login_failures(void *cookie) 686 { 687 struct qedf_ctx *qedf; 688 689 qedf = (struct qedf_ctx *)cookie; 690 return qedf->flogi_failed; 691 } 692 693 static struct qed_fcoe_cb_ops qedf_cb_ops = { 694 { 695 .link_update = qedf_link_update, 696 .bw_update = qedf_bw_update, 697 .schedule_recovery_handler = qedf_schedule_recovery_handler, 698 .dcbx_aen = qedf_dcbx_handler, 699 .get_generic_tlv_data = qedf_get_generic_tlv_data, 700 .get_protocol_tlv_data = qedf_get_protocol_tlv_data, 701 .schedule_hw_err_handler = qedf_schedule_hw_err_handler, 702 } 703 }; 704 705 /* 706 * Various transport templates. 707 */ 708 709 static struct scsi_transport_template *qedf_fc_transport_template; 710 static struct scsi_transport_template *qedf_fc_vport_transport_template; 711 712 /* 713 * SCSI EH handlers 714 */ 715 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd) 716 { 717 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); 718 struct fc_lport *lport; 719 struct qedf_ctx *qedf; 720 struct qedf_ioreq *io_req; 721 struct fc_rport_libfc_priv *rp = rport->dd_data; 722 struct fc_rport_priv *rdata; 723 struct qedf_rport *fcport = NULL; 724 int rc = FAILED; 725 int wait_count = 100; 726 int refcount = 0; 727 int rval; 728 int got_ref = 0; 729 730 lport = shost_priv(sc_cmd->device->host); 731 qedf = (struct qedf_ctx *)lport_priv(lport); 732 733 /* rport and tgt are allocated together, so tgt should be non-NULL */ 734 fcport = (struct qedf_rport *)&rp[1]; 735 rdata = fcport->rdata; 736 if (!rdata || !kref_get_unless_zero(&rdata->kref)) { 737 QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd); 738 rc = SUCCESS; 739 goto out; 740 } 741 742 743 io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr; 744 if (!io_req) { 745 QEDF_ERR(&qedf->dbg_ctx, 746 "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n", 747 sc_cmd, sc_cmd->cmnd[0], 748 rdata->ids.port_id); 749 rc = SUCCESS; 750 goto drop_rdata_kref; 751 } 752 753 rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */ 754 if (rval) 755 got_ref = 1; 756 757 /* If we got a valid io_req, confirm it belongs to this sc_cmd. */ 758 if (!rval || io_req->sc_cmd != sc_cmd) { 759 QEDF_ERR(&qedf->dbg_ctx, 760 "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n", 761 io_req->sc_cmd, sc_cmd, rdata->ids.port_id); 762 763 goto drop_rdata_kref; 764 } 765 766 if (fc_remote_port_chkready(rport)) { 767 refcount = kref_read(&io_req->refcount); 768 QEDF_ERR(&qedf->dbg_ctx, 769 "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n", 770 io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0], 771 refcount, rdata->ids.port_id); 772 773 goto drop_rdata_kref; 774 } 775 776 rc = fc_block_scsi_eh(sc_cmd); 777 if (rc) 778 goto drop_rdata_kref; 779 780 if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) { 781 QEDF_ERR(&qedf->dbg_ctx, 782 "Connection uploading, xid=0x%x., port_id=%06x\n", 783 io_req->xid, rdata->ids.port_id); 784 while (io_req->sc_cmd && (wait_count != 0)) { 785 msleep(100); 786 wait_count--; 787 } 788 if (wait_count) { 789 QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n"); 790 rc = SUCCESS; 791 } else { 792 QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n"); 793 rc = FAILED; 794 } 795 goto drop_rdata_kref; 796 } 797 798 if (lport->state != LPORT_ST_READY || !(lport->link_up)) { 799 QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n"); 800 goto drop_rdata_kref; 801 } 802 803 QEDF_ERR(&qedf->dbg_ctx, 804 "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n", 805 io_req, sc_cmd, io_req->xid, io_req->fp_idx, 806 rdata->ids.port_id); 807 808 if (qedf->stop_io_on_error) { 809 qedf_stop_all_io(qedf); 810 rc = SUCCESS; 811 goto drop_rdata_kref; 812 } 813 814 init_completion(&io_req->abts_done); 815 rval = qedf_initiate_abts(io_req, true); 816 if (rval) { 817 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n"); 818 /* 819 * If we fail to queue the ABTS then return this command to 820 * the SCSI layer as it will own and free the xid 821 */ 822 rc = SUCCESS; 823 qedf_scsi_done(qedf, io_req, DID_ERROR); 824 goto drop_rdata_kref; 825 } 826 827 wait_for_completion(&io_req->abts_done); 828 829 if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS || 830 io_req->event == QEDF_IOREQ_EV_ABORT_FAILED || 831 io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) { 832 /* 833 * If we get a reponse to the abort this is success from 834 * the perspective that all references to the command have 835 * been removed from the driver and firmware 836 */ 837 rc = SUCCESS; 838 } else { 839 /* If the abort and cleanup failed then return a failure */ 840 rc = FAILED; 841 } 842 843 if (rc == SUCCESS) 844 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n", 845 io_req->xid); 846 else 847 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n", 848 io_req->xid); 849 850 drop_rdata_kref: 851 kref_put(&rdata->kref, fc_rport_destroy); 852 out: 853 if (got_ref) 854 kref_put(&io_req->refcount, qedf_release_cmd); 855 return rc; 856 } 857 858 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd) 859 { 860 QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...", 861 sc_cmd->device->host->host_no, sc_cmd->device->id, 862 sc_cmd->device->lun); 863 return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET); 864 } 865 866 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd) 867 { 868 QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ", 869 sc_cmd->device->host->host_no, sc_cmd->device->id, 870 sc_cmd->device->lun); 871 return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET); 872 } 873 874 bool qedf_wait_for_upload(struct qedf_ctx *qedf) 875 { 876 struct qedf_rport *fcport = NULL; 877 int wait_cnt = 120; 878 879 while (wait_cnt--) { 880 if (atomic_read(&qedf->num_offloads)) 881 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 882 "Waiting for all uploads to complete num_offloads = 0x%x.\n", 883 atomic_read(&qedf->num_offloads)); 884 else 885 return true; 886 msleep(500); 887 } 888 889 rcu_read_lock(); 890 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 891 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, 892 &fcport->flags)) { 893 if (fcport->rdata) 894 QEDF_ERR(&qedf->dbg_ctx, 895 "Waiting for fcport %p portid=%06x.\n", 896 fcport, fcport->rdata->ids.port_id); 897 } else { 898 QEDF_ERR(&qedf->dbg_ctx, 899 "Waiting for fcport %p.\n", fcport); 900 } 901 } 902 rcu_read_unlock(); 903 return false; 904 905 } 906 907 /* Performs soft reset of qedf_ctx by simulating a link down/up */ 908 void qedf_ctx_soft_reset(struct fc_lport *lport) 909 { 910 struct qedf_ctx *qedf; 911 struct qed_link_output if_link; 912 913 if (lport->vport) { 914 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n"); 915 return; 916 } 917 918 qedf = lport_priv(lport); 919 920 qedf->flogi_pending = 0; 921 /* For host reset, essentially do a soft link up/down */ 922 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 923 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 924 "Queuing link down work.\n"); 925 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 926 0); 927 928 if (qedf_wait_for_upload(qedf) == false) { 929 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 930 WARN_ON(atomic_read(&qedf->num_offloads)); 931 } 932 933 /* Before setting link up query physical link state */ 934 qed_ops->common->get_link(qedf->cdev, &if_link); 935 /* Bail if the physical link is not up */ 936 if (!if_link.link_up) { 937 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 938 "Physical link is not up.\n"); 939 return; 940 } 941 /* Flush and wait to make sure link down is processed */ 942 flush_delayed_work(&qedf->link_update); 943 msleep(500); 944 945 atomic_set(&qedf->link_state, QEDF_LINK_UP); 946 qedf->vlan_id = 0; 947 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 948 "Queue link up work.\n"); 949 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 950 0); 951 } 952 953 /* Reset the host by gracefully logging out and then logging back in */ 954 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd) 955 { 956 struct fc_lport *lport; 957 struct qedf_ctx *qedf; 958 959 lport = shost_priv(sc_cmd->device->host); 960 qedf = lport_priv(lport); 961 962 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN || 963 test_bit(QEDF_UNLOADING, &qedf->flags)) 964 return FAILED; 965 966 QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued..."); 967 968 qedf_ctx_soft_reset(lport); 969 970 return SUCCESS; 971 } 972 973 static int qedf_slave_configure(struct scsi_device *sdev) 974 { 975 if (qedf_queue_depth) { 976 scsi_change_queue_depth(sdev, qedf_queue_depth); 977 } 978 979 return 0; 980 } 981 982 static struct scsi_host_template qedf_host_template = { 983 .module = THIS_MODULE, 984 .name = QEDF_MODULE_NAME, 985 .this_id = -1, 986 .cmd_per_lun = 32, 987 .max_sectors = 0xffff, 988 .queuecommand = qedf_queuecommand, 989 .shost_attrs = qedf_host_attrs, 990 .eh_abort_handler = qedf_eh_abort, 991 .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */ 992 .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */ 993 .eh_host_reset_handler = qedf_eh_host_reset, 994 .slave_configure = qedf_slave_configure, 995 .dma_boundary = QED_HW_DMA_BOUNDARY, 996 .sg_tablesize = QEDF_MAX_BDS_PER_CMD, 997 .can_queue = FCOE_PARAMS_NUM_TASKS, 998 .change_queue_depth = scsi_change_queue_depth, 999 }; 1000 1001 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen) 1002 { 1003 int rc; 1004 1005 spin_lock(&qedf_global_lock); 1006 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global); 1007 spin_unlock(&qedf_global_lock); 1008 1009 return rc; 1010 } 1011 1012 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id) 1013 { 1014 struct qedf_rport *fcport; 1015 struct fc_rport_priv *rdata; 1016 1017 rcu_read_lock(); 1018 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 1019 rdata = fcport->rdata; 1020 if (rdata == NULL) 1021 continue; 1022 if (rdata->ids.port_id == port_id) { 1023 rcu_read_unlock(); 1024 return fcport; 1025 } 1026 } 1027 rcu_read_unlock(); 1028 1029 /* Return NULL to caller to let them know fcport was not found */ 1030 return NULL; 1031 } 1032 1033 /* Transmits an ELS frame over an offloaded session */ 1034 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp) 1035 { 1036 struct fc_frame_header *fh; 1037 int rc = 0; 1038 1039 fh = fc_frame_header_get(fp); 1040 if ((fh->fh_type == FC_TYPE_ELS) && 1041 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 1042 switch (fc_frame_payload_op(fp)) { 1043 case ELS_ADISC: 1044 qedf_send_adisc(fcport, fp); 1045 rc = 1; 1046 break; 1047 } 1048 } 1049 1050 return rc; 1051 } 1052 1053 /* 1054 * qedf_xmit - qedf FCoE frame transmit function 1055 */ 1056 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp) 1057 { 1058 struct fc_lport *base_lport; 1059 struct qedf_ctx *qedf; 1060 struct ethhdr *eh; 1061 struct fcoe_crc_eof *cp; 1062 struct sk_buff *skb; 1063 struct fc_frame_header *fh; 1064 struct fcoe_hdr *hp; 1065 u8 sof, eof; 1066 u32 crc; 1067 unsigned int hlen, tlen, elen; 1068 int wlen; 1069 struct fc_stats *stats; 1070 struct fc_lport *tmp_lport; 1071 struct fc_lport *vn_port = NULL; 1072 struct qedf_rport *fcport; 1073 int rc; 1074 u16 vlan_tci = 0; 1075 1076 qedf = (struct qedf_ctx *)lport_priv(lport); 1077 1078 fh = fc_frame_header_get(fp); 1079 skb = fp_skb(fp); 1080 1081 /* Filter out traffic to other NPIV ports on the same host */ 1082 if (lport->vport) 1083 base_lport = shost_priv(vport_to_shost(lport->vport)); 1084 else 1085 base_lport = lport; 1086 1087 /* Flag if the destination is the base port */ 1088 if (base_lport->port_id == ntoh24(fh->fh_d_id)) { 1089 vn_port = base_lport; 1090 } else { 1091 /* Got through the list of vports attached to the base_lport 1092 * and see if we have a match with the destination address. 1093 */ 1094 list_for_each_entry(tmp_lport, &base_lport->vports, list) { 1095 if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) { 1096 vn_port = tmp_lport; 1097 break; 1098 } 1099 } 1100 } 1101 if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) { 1102 struct fc_rport_priv *rdata = NULL; 1103 1104 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 1105 "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id)); 1106 kfree_skb(skb); 1107 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id)); 1108 if (rdata) { 1109 rdata->retries = lport->max_rport_retry_count; 1110 kref_put(&rdata->kref, fc_rport_destroy); 1111 } 1112 return -EINVAL; 1113 } 1114 /* End NPIV filtering */ 1115 1116 if (!qedf->ctlr.sel_fcf) { 1117 kfree_skb(skb); 1118 return 0; 1119 } 1120 1121 if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) { 1122 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n"); 1123 kfree_skb(skb); 1124 return 0; 1125 } 1126 1127 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 1128 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n"); 1129 kfree_skb(skb); 1130 return 0; 1131 } 1132 1133 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 1134 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb)) 1135 return 0; 1136 } 1137 1138 /* Check to see if this needs to be sent on an offloaded session */ 1139 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 1140 1141 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1142 rc = qedf_xmit_l2_frame(fcport, fp); 1143 /* 1144 * If the frame was successfully sent over the middle path 1145 * then do not try to also send it over the LL2 path 1146 */ 1147 if (rc) 1148 return 0; 1149 } 1150 1151 sof = fr_sof(fp); 1152 eof = fr_eof(fp); 1153 1154 elen = sizeof(struct ethhdr); 1155 hlen = sizeof(struct fcoe_hdr); 1156 tlen = sizeof(struct fcoe_crc_eof); 1157 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; 1158 1159 skb->ip_summed = CHECKSUM_NONE; 1160 crc = fcoe_fc_crc(fp); 1161 1162 /* copy port crc and eof to the skb buff */ 1163 if (skb_is_nonlinear(skb)) { 1164 skb_frag_t *frag; 1165 1166 if (qedf_get_paged_crc_eof(skb, tlen)) { 1167 kfree_skb(skb); 1168 return -ENOMEM; 1169 } 1170 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; 1171 cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag); 1172 } else { 1173 cp = skb_put(skb, tlen); 1174 } 1175 1176 memset(cp, 0, sizeof(*cp)); 1177 cp->fcoe_eof = eof; 1178 cp->fcoe_crc32 = cpu_to_le32(~crc); 1179 if (skb_is_nonlinear(skb)) { 1180 kunmap_atomic(cp); 1181 cp = NULL; 1182 } 1183 1184 1185 /* adjust skb network/transport offsets to match mac/fcoe/port */ 1186 skb_push(skb, elen + hlen); 1187 skb_reset_mac_header(skb); 1188 skb_reset_network_header(skb); 1189 skb->mac_len = elen; 1190 skb->protocol = htons(ETH_P_FCOE); 1191 1192 /* 1193 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN 1194 * for FIP/FCoE traffic. 1195 */ 1196 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id); 1197 1198 /* fill up mac and fcoe headers */ 1199 eh = eth_hdr(skb); 1200 eh->h_proto = htons(ETH_P_FCOE); 1201 if (qedf->ctlr.map_dest) 1202 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); 1203 else 1204 /* insert GW address */ 1205 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr); 1206 1207 /* Set the source MAC address */ 1208 ether_addr_copy(eh->h_source, qedf->data_src_addr); 1209 1210 hp = (struct fcoe_hdr *)(eh + 1); 1211 memset(hp, 0, sizeof(*hp)); 1212 if (FC_FCOE_VER) 1213 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); 1214 hp->fcoe_sof = sof; 1215 1216 /*update tx stats */ 1217 stats = per_cpu_ptr(lport->stats, get_cpu()); 1218 stats->TxFrames++; 1219 stats->TxWords += wlen; 1220 put_cpu(); 1221 1222 /* Get VLAN ID from skb for printing purposes */ 1223 __vlan_hwaccel_get_tag(skb, &vlan_tci); 1224 1225 /* send down to lld */ 1226 fr_dev(fp) = lport; 1227 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: " 1228 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n", 1229 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type, 1230 vlan_tci); 1231 if (qedf_dump_frames) 1232 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 1233 1, skb->data, skb->len, false); 1234 rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0); 1235 if (rc) { 1236 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc); 1237 kfree_skb(skb); 1238 return rc; 1239 } 1240 1241 return 0; 1242 } 1243 1244 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1245 { 1246 int rval = 0; 1247 u32 *pbl; 1248 dma_addr_t page; 1249 int num_pages; 1250 1251 /* Calculate appropriate queue and PBL sizes */ 1252 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 1253 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE); 1254 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) * 1255 sizeof(void *); 1256 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE; 1257 1258 fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1259 &fcport->sq_dma, GFP_KERNEL); 1260 if (!fcport->sq) { 1261 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n"); 1262 rval = 1; 1263 goto out; 1264 } 1265 1266 fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 1267 fcport->sq_pbl_size, 1268 &fcport->sq_pbl_dma, GFP_KERNEL); 1269 if (!fcport->sq_pbl) { 1270 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n"); 1271 rval = 1; 1272 goto out_free_sq; 1273 } 1274 1275 /* Create PBL */ 1276 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE; 1277 page = fcport->sq_dma; 1278 pbl = (u32 *)fcport->sq_pbl; 1279 1280 while (num_pages--) { 1281 *pbl = U64_LO(page); 1282 pbl++; 1283 *pbl = U64_HI(page); 1284 pbl++; 1285 page += QEDF_PAGE_SIZE; 1286 } 1287 1288 return rval; 1289 1290 out_free_sq: 1291 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq, 1292 fcport->sq_dma); 1293 out: 1294 return rval; 1295 } 1296 1297 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1298 { 1299 if (fcport->sq_pbl) 1300 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size, 1301 fcport->sq_pbl, fcport->sq_pbl_dma); 1302 if (fcport->sq) 1303 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1304 fcport->sq, fcport->sq_dma); 1305 } 1306 1307 static int qedf_offload_connection(struct qedf_ctx *qedf, 1308 struct qedf_rport *fcport) 1309 { 1310 struct qed_fcoe_params_offload conn_info; 1311 u32 port_id; 1312 int rval; 1313 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe)); 1314 1315 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection " 1316 "portid=%06x.\n", fcport->rdata->ids.port_id); 1317 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle, 1318 &fcport->fw_cid, &fcport->p_doorbell); 1319 if (rval) { 1320 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection " 1321 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1322 rval = 1; /* For some reason qed returns 0 on failure here */ 1323 goto out; 1324 } 1325 1326 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x " 1327 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id, 1328 fcport->fw_cid, fcport->handle); 1329 1330 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload)); 1331 1332 /* Fill in the offload connection info */ 1333 conn_info.sq_pbl_addr = fcport->sq_pbl_dma; 1334 1335 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl); 1336 conn_info.sq_next_page_addr = 1337 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8)); 1338 1339 /* Need to use our FCoE MAC for the offload session */ 1340 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr); 1341 1342 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr); 1343 1344 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size; 1345 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov; 1346 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */ 1347 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size; 1348 1349 /* Set VLAN data */ 1350 conn_info.vlan_tag = qedf->vlan_id << 1351 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT; 1352 conn_info.vlan_tag |= 1353 qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT; 1354 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK << 1355 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT); 1356 1357 /* Set host port source id */ 1358 port_id = fc_host_port_id(qedf->lport->host); 1359 fcport->sid = port_id; 1360 conn_info.s_id.addr_hi = (port_id & 0x000000FF); 1361 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1362 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1363 1364 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq; 1365 1366 /* Set remote port destination id */ 1367 port_id = fcport->rdata->rport->port_id; 1368 conn_info.d_id.addr_hi = (port_id & 0x000000FF); 1369 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1370 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1371 1372 conn_info.def_q_idx = 0; /* Default index for send queue? */ 1373 1374 /* Set FC-TAPE specific flags if needed */ 1375 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) { 1376 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, 1377 "Enable CONF, REC for portid=%06x.\n", 1378 fcport->rdata->ids.port_id); 1379 conn_info.flags |= 1 << 1380 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT; 1381 conn_info.flags |= 1382 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) << 1383 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT; 1384 } 1385 1386 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info); 1387 if (rval) { 1388 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection " 1389 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1390 goto out_free_conn; 1391 } else 1392 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload " 1393 "succeeded portid=%06x total_sqe=%d.\n", 1394 fcport->rdata->ids.port_id, total_sqe); 1395 1396 spin_lock_init(&fcport->rport_lock); 1397 atomic_set(&fcport->free_sqes, total_sqe); 1398 return 0; 1399 out_free_conn: 1400 qed_ops->release_conn(qedf->cdev, fcport->handle); 1401 out: 1402 return rval; 1403 } 1404 1405 #define QEDF_TERM_BUFF_SIZE 10 1406 static void qedf_upload_connection(struct qedf_ctx *qedf, 1407 struct qedf_rport *fcport) 1408 { 1409 void *term_params; 1410 dma_addr_t term_params_dma; 1411 1412 /* Term params needs to be a DMA coherent buffer as qed shared the 1413 * physical DMA address with the firmware. The buffer may be used in 1414 * the receive path so we may eventually have to move this. 1415 */ 1416 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, 1417 &term_params_dma, GFP_KERNEL); 1418 1419 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection " 1420 "port_id=%06x.\n", fcport->rdata->ids.port_id); 1421 1422 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma); 1423 qed_ops->release_conn(qedf->cdev, fcport->handle); 1424 1425 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params, 1426 term_params_dma); 1427 } 1428 1429 static void qedf_cleanup_fcport(struct qedf_ctx *qedf, 1430 struct qedf_rport *fcport) 1431 { 1432 struct fc_rport_priv *rdata = fcport->rdata; 1433 1434 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n", 1435 fcport->rdata->ids.port_id); 1436 1437 /* Flush any remaining i/o's before we upload the connection */ 1438 qedf_flush_active_ios(fcport, -1); 1439 1440 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) 1441 qedf_upload_connection(qedf, fcport); 1442 qedf_free_sq(qedf, fcport); 1443 fcport->rdata = NULL; 1444 fcport->qedf = NULL; 1445 kref_put(&rdata->kref, fc_rport_destroy); 1446 } 1447 1448 /* 1449 * This event_callback is called after successful completion of libfc 1450 * initiated target login. qedf can proceed with initiating the session 1451 * establishment. 1452 */ 1453 static void qedf_rport_event_handler(struct fc_lport *lport, 1454 struct fc_rport_priv *rdata, 1455 enum fc_rport_event event) 1456 { 1457 struct qedf_ctx *qedf = lport_priv(lport); 1458 struct fc_rport *rport = rdata->rport; 1459 struct fc_rport_libfc_priv *rp; 1460 struct qedf_rport *fcport; 1461 u32 port_id; 1462 int rval; 1463 unsigned long flags; 1464 1465 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, " 1466 "port_id = 0x%x\n", event, rdata->ids.port_id); 1467 1468 switch (event) { 1469 case RPORT_EV_READY: 1470 if (!rport) { 1471 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n"); 1472 break; 1473 } 1474 1475 rp = rport->dd_data; 1476 fcport = (struct qedf_rport *)&rp[1]; 1477 fcport->qedf = qedf; 1478 1479 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) { 1480 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading " 1481 "portid=0x%x as max number of offloaded sessions " 1482 "reached.\n", rdata->ids.port_id); 1483 return; 1484 } 1485 1486 /* 1487 * Don't try to offload the session again. Can happen when we 1488 * get an ADISC 1489 */ 1490 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1491 QEDF_WARN(&(qedf->dbg_ctx), "Session already " 1492 "offloaded, portid=0x%x.\n", 1493 rdata->ids.port_id); 1494 return; 1495 } 1496 1497 if (rport->port_id == FC_FID_DIR_SERV) { 1498 /* 1499 * qedf_rport structure doesn't exist for 1500 * directory server. 1501 * We should not come here, as lport will 1502 * take care of fabric login 1503 */ 1504 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not " 1505 "exist for dir server port_id=%x\n", 1506 rdata->ids.port_id); 1507 break; 1508 } 1509 1510 if (rdata->spp_type != FC_TYPE_FCP) { 1511 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1512 "Not offloading since spp type isn't FCP\n"); 1513 break; 1514 } 1515 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1516 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1517 "Not FCP target so not offloading\n"); 1518 break; 1519 } 1520 1521 /* Initial reference held on entry, so this can't fail */ 1522 kref_get(&rdata->kref); 1523 fcport->rdata = rdata; 1524 fcport->rport = rport; 1525 1526 rval = qedf_alloc_sq(qedf, fcport); 1527 if (rval) { 1528 qedf_cleanup_fcport(qedf, fcport); 1529 break; 1530 } 1531 1532 /* Set device type */ 1533 if (rdata->flags & FC_RP_FLAGS_RETRY && 1534 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET && 1535 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) { 1536 fcport->dev_type = QEDF_RPORT_TYPE_TAPE; 1537 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1538 "portid=%06x is a TAPE device.\n", 1539 rdata->ids.port_id); 1540 } else { 1541 fcport->dev_type = QEDF_RPORT_TYPE_DISK; 1542 } 1543 1544 rval = qedf_offload_connection(qedf, fcport); 1545 if (rval) { 1546 qedf_cleanup_fcport(qedf, fcport); 1547 break; 1548 } 1549 1550 /* Add fcport to list of qedf_ctx list of offloaded ports */ 1551 spin_lock_irqsave(&qedf->hba_lock, flags); 1552 list_add_rcu(&fcport->peers, &qedf->fcports); 1553 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1554 1555 /* 1556 * Set the session ready bit to let everyone know that this 1557 * connection is ready for I/O 1558 */ 1559 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags); 1560 atomic_inc(&qedf->num_offloads); 1561 1562 break; 1563 case RPORT_EV_LOGO: 1564 case RPORT_EV_FAILED: 1565 case RPORT_EV_STOP: 1566 port_id = rdata->ids.port_id; 1567 if (port_id == FC_FID_DIR_SERV) 1568 break; 1569 1570 if (rdata->spp_type != FC_TYPE_FCP) { 1571 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1572 "No action since spp type isn't FCP\n"); 1573 break; 1574 } 1575 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1576 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1577 "Not FCP target so no action\n"); 1578 break; 1579 } 1580 1581 if (!rport) { 1582 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1583 "port_id=%x - rport notcreated Yet!!\n", port_id); 1584 break; 1585 } 1586 rp = rport->dd_data; 1587 /* 1588 * Perform session upload. Note that rdata->peers is already 1589 * removed from disc->rports list before we get this event. 1590 */ 1591 fcport = (struct qedf_rport *)&rp[1]; 1592 1593 spin_lock_irqsave(&fcport->rport_lock, flags); 1594 /* Only free this fcport if it is offloaded already */ 1595 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) && 1596 !test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1597 &fcport->flags)) { 1598 set_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1599 &fcport->flags); 1600 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1601 qedf_cleanup_fcport(qedf, fcport); 1602 /* 1603 * Remove fcport to list of qedf_ctx list of offloaded 1604 * ports 1605 */ 1606 spin_lock_irqsave(&qedf->hba_lock, flags); 1607 list_del_rcu(&fcport->peers); 1608 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1609 1610 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1611 &fcport->flags); 1612 atomic_dec(&qedf->num_offloads); 1613 } else { 1614 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1615 } 1616 break; 1617 1618 case RPORT_EV_NONE: 1619 break; 1620 } 1621 } 1622 1623 static void qedf_abort_io(struct fc_lport *lport) 1624 { 1625 /* NO-OP but need to fill in the template */ 1626 } 1627 1628 static void qedf_fcp_cleanup(struct fc_lport *lport) 1629 { 1630 /* 1631 * NO-OP but need to fill in template to prevent a NULL 1632 * function pointer dereference during link down. I/Os 1633 * will be flushed when port is uploaded. 1634 */ 1635 } 1636 1637 static struct libfc_function_template qedf_lport_template = { 1638 .frame_send = qedf_xmit, 1639 .fcp_abort_io = qedf_abort_io, 1640 .fcp_cleanup = qedf_fcp_cleanup, 1641 .rport_event_callback = qedf_rport_event_handler, 1642 .elsct_send = qedf_elsct_send, 1643 }; 1644 1645 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf) 1646 { 1647 fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO); 1648 1649 qedf->ctlr.send = qedf_fip_send; 1650 qedf->ctlr.get_src_addr = qedf_get_src_mac; 1651 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac); 1652 } 1653 1654 static void qedf_setup_fdmi(struct qedf_ctx *qedf) 1655 { 1656 struct fc_lport *lport = qedf->lport; 1657 u8 buf[8]; 1658 int pos; 1659 uint32_t i; 1660 1661 /* 1662 * fdmi_enabled needs to be set for libfc 1663 * to execute FDMI registration 1664 */ 1665 lport->fdmi_enabled = 1; 1666 1667 /* 1668 * Setup the necessary fc_host attributes to that will be used to fill 1669 * in the FDMI information. 1670 */ 1671 1672 /* Get the PCI-e Device Serial Number Capability */ 1673 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN); 1674 if (pos) { 1675 pos += 4; 1676 for (i = 0; i < 8; i++) 1677 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]); 1678 1679 snprintf(fc_host_serial_number(lport->host), 1680 FC_SERIAL_NUMBER_SIZE, 1681 "%02X%02X%02X%02X%02X%02X%02X%02X", 1682 buf[7], buf[6], buf[5], buf[4], 1683 buf[3], buf[2], buf[1], buf[0]); 1684 } else 1685 snprintf(fc_host_serial_number(lport->host), 1686 FC_SERIAL_NUMBER_SIZE, "Unknown"); 1687 1688 snprintf(fc_host_manufacturer(lport->host), 1689 FC_SERIAL_NUMBER_SIZE, "%s", "Marvell Semiconductor Inc."); 1690 1691 if (qedf->pdev->device == QL45xxx) { 1692 snprintf(fc_host_model(lport->host), 1693 FC_SYMBOLIC_NAME_SIZE, "%s", "QL45xxx"); 1694 1695 snprintf(fc_host_model_description(lport->host), 1696 FC_SYMBOLIC_NAME_SIZE, "%s", 1697 "Marvell FastLinQ QL45xxx FCoE Adapter"); 1698 } 1699 1700 if (qedf->pdev->device == QL41xxx) { 1701 snprintf(fc_host_model(lport->host), 1702 FC_SYMBOLIC_NAME_SIZE, "%s", "QL41xxx"); 1703 1704 snprintf(fc_host_model_description(lport->host), 1705 FC_SYMBOLIC_NAME_SIZE, "%s", 1706 "Marvell FastLinQ QL41xxx FCoE Adapter"); 1707 } 1708 1709 snprintf(fc_host_hardware_version(lport->host), 1710 FC_VERSION_STRING_SIZE, "Rev %d", qedf->pdev->revision); 1711 1712 snprintf(fc_host_driver_version(lport->host), 1713 FC_VERSION_STRING_SIZE, "%s", QEDF_VERSION); 1714 1715 snprintf(fc_host_firmware_version(lport->host), 1716 FC_VERSION_STRING_SIZE, "%d.%d.%d.%d", 1717 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 1718 FW_ENGINEERING_VERSION); 1719 1720 } 1721 1722 static int qedf_lport_setup(struct qedf_ctx *qedf) 1723 { 1724 struct fc_lport *lport = qedf->lport; 1725 1726 lport->link_up = 0; 1727 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1728 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1729 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1730 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1731 lport->boot_time = jiffies; 1732 lport->e_d_tov = 2 * 1000; 1733 lport->r_a_tov = 10 * 1000; 1734 1735 /* Set NPIV support */ 1736 lport->does_npiv = 1; 1737 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV; 1738 1739 fc_set_wwnn(lport, qedf->wwnn); 1740 fc_set_wwpn(lport, qedf->wwpn); 1741 1742 if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) { 1743 QEDF_ERR(&qedf->dbg_ctx, 1744 "fcoe_libfc_config failed.\n"); 1745 return -ENOMEM; 1746 } 1747 1748 /* Allocate the exchange manager */ 1749 fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS, 1750 0xfffe, NULL); 1751 1752 if (fc_lport_init_stats(lport)) 1753 return -ENOMEM; 1754 1755 /* Finish lport config */ 1756 fc_lport_config(lport); 1757 1758 /* Set max frame size */ 1759 fc_set_mfs(lport, QEDF_MFS); 1760 fc_host_maxframe_size(lport->host) = lport->mfs; 1761 1762 /* Set default dev_loss_tmo based on module parameter */ 1763 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo; 1764 1765 /* Set symbolic node name */ 1766 if (qedf->pdev->device == QL45xxx) 1767 snprintf(fc_host_symbolic_name(lport->host), 256, 1768 "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION); 1769 1770 if (qedf->pdev->device == QL41xxx) 1771 snprintf(fc_host_symbolic_name(lport->host), 256, 1772 "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION); 1773 1774 qedf_setup_fdmi(qedf); 1775 1776 return 0; 1777 } 1778 1779 /* 1780 * NPIV functions 1781 */ 1782 1783 static int qedf_vport_libfc_config(struct fc_vport *vport, 1784 struct fc_lport *lport) 1785 { 1786 lport->link_up = 0; 1787 lport->qfull = 0; 1788 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1789 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1790 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1791 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1792 lport->boot_time = jiffies; 1793 lport->e_d_tov = 2 * 1000; 1794 lport->r_a_tov = 10 * 1000; 1795 lport->does_npiv = 1; /* Temporary until we add NPIV support */ 1796 1797 /* Allocate stats for vport */ 1798 if (fc_lport_init_stats(lport)) 1799 return -ENOMEM; 1800 1801 /* Finish lport config */ 1802 fc_lport_config(lport); 1803 1804 /* offload related configuration */ 1805 lport->crc_offload = 0; 1806 lport->seq_offload = 0; 1807 lport->lro_enabled = 0; 1808 lport->lro_xid = 0; 1809 lport->lso_max = 0; 1810 1811 return 0; 1812 } 1813 1814 static int qedf_vport_create(struct fc_vport *vport, bool disabled) 1815 { 1816 struct Scsi_Host *shost = vport_to_shost(vport); 1817 struct fc_lport *n_port = shost_priv(shost); 1818 struct fc_lport *vn_port; 1819 struct qedf_ctx *base_qedf = lport_priv(n_port); 1820 struct qedf_ctx *vport_qedf; 1821 1822 char buf[32]; 1823 int rc = 0; 1824 1825 rc = fcoe_validate_vport_create(vport); 1826 if (rc) { 1827 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1828 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, " 1829 "WWPN (0x%s) already exists.\n", buf); 1830 goto err1; 1831 } 1832 1833 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) { 1834 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport " 1835 "because link is not up.\n"); 1836 rc = -EIO; 1837 goto err1; 1838 } 1839 1840 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx)); 1841 if (!vn_port) { 1842 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport " 1843 "for vport.\n"); 1844 rc = -ENOMEM; 1845 goto err1; 1846 } 1847 1848 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1849 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n", 1850 buf); 1851 1852 /* Copy some fields from base_qedf */ 1853 vport_qedf = lport_priv(vn_port); 1854 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx)); 1855 1856 /* Set qedf data specific to this vport */ 1857 vport_qedf->lport = vn_port; 1858 /* Use same hba_lock as base_qedf */ 1859 vport_qedf->hba_lock = base_qedf->hba_lock; 1860 vport_qedf->pdev = base_qedf->pdev; 1861 vport_qedf->cmd_mgr = base_qedf->cmd_mgr; 1862 init_completion(&vport_qedf->flogi_compl); 1863 INIT_LIST_HEAD(&vport_qedf->fcports); 1864 1865 rc = qedf_vport_libfc_config(vport, vn_port); 1866 if (rc) { 1867 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory " 1868 "for lport stats.\n"); 1869 goto err2; 1870 } 1871 1872 fc_set_wwnn(vn_port, vport->node_name); 1873 fc_set_wwpn(vn_port, vport->port_name); 1874 vport_qedf->wwnn = vn_port->wwnn; 1875 vport_qedf->wwpn = vn_port->wwpn; 1876 1877 vn_port->host->transportt = qedf_fc_vport_transport_template; 1878 vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS; 1879 vn_port->host->max_lun = qedf_max_lun; 1880 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD; 1881 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN; 1882 1883 rc = scsi_add_host(vn_port->host, &vport->dev); 1884 if (rc) { 1885 QEDF_WARN(&base_qedf->dbg_ctx, 1886 "Error adding Scsi_Host rc=0x%x.\n", rc); 1887 goto err2; 1888 } 1889 1890 /* Set default dev_loss_tmo based on module parameter */ 1891 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo; 1892 1893 /* Init libfc stuffs */ 1894 memcpy(&vn_port->tt, &qedf_lport_template, 1895 sizeof(qedf_lport_template)); 1896 fc_exch_init(vn_port); 1897 fc_elsct_init(vn_port); 1898 fc_lport_init(vn_port); 1899 fc_disc_init(vn_port); 1900 fc_disc_config(vn_port, vn_port); 1901 1902 1903 /* Allocate the exchange manager */ 1904 shost = vport_to_shost(vport); 1905 n_port = shost_priv(shost); 1906 fc_exch_mgr_list_clone(n_port, vn_port); 1907 1908 /* Set max frame size */ 1909 fc_set_mfs(vn_port, QEDF_MFS); 1910 1911 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN; 1912 1913 if (disabled) { 1914 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1915 } else { 1916 vn_port->boot_time = jiffies; 1917 fc_fabric_login(vn_port); 1918 fc_vport_setlink(vn_port); 1919 } 1920 1921 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n", 1922 vn_port); 1923 1924 /* Set up debug context for vport */ 1925 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no; 1926 vport_qedf->dbg_ctx.pdev = base_qedf->pdev; 1927 1928 err2: 1929 scsi_host_put(vn_port->host); 1930 err1: 1931 return rc; 1932 } 1933 1934 static int qedf_vport_destroy(struct fc_vport *vport) 1935 { 1936 struct Scsi_Host *shost = vport_to_shost(vport); 1937 struct fc_lport *n_port = shost_priv(shost); 1938 struct fc_lport *vn_port = vport->dd_data; 1939 struct qedf_ctx *qedf = lport_priv(vn_port); 1940 1941 if (!qedf) { 1942 QEDF_ERR(NULL, "qedf is NULL.\n"); 1943 goto out; 1944 } 1945 1946 /* Set unloading bit on vport qedf_ctx to prevent more I/O */ 1947 set_bit(QEDF_UNLOADING, &qedf->flags); 1948 1949 mutex_lock(&n_port->lp_mutex); 1950 list_del(&vn_port->list); 1951 mutex_unlock(&n_port->lp_mutex); 1952 1953 fc_fabric_logoff(vn_port); 1954 fc_lport_destroy(vn_port); 1955 1956 /* Detach from scsi-ml */ 1957 fc_remove_host(vn_port->host); 1958 scsi_remove_host(vn_port->host); 1959 1960 /* 1961 * Only try to release the exchange manager if the vn_port 1962 * configuration is complete. 1963 */ 1964 if (vn_port->state == LPORT_ST_READY) 1965 fc_exch_mgr_free(vn_port); 1966 1967 /* Free memory used by statistical counters */ 1968 fc_lport_free_stats(vn_port); 1969 1970 /* Release Scsi_Host */ 1971 if (vn_port->host) 1972 scsi_host_put(vn_port->host); 1973 1974 out: 1975 return 0; 1976 } 1977 1978 static int qedf_vport_disable(struct fc_vport *vport, bool disable) 1979 { 1980 struct fc_lport *lport = vport->dd_data; 1981 1982 if (disable) { 1983 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1984 fc_fabric_logoff(lport); 1985 } else { 1986 lport->boot_time = jiffies; 1987 fc_fabric_login(lport); 1988 fc_vport_setlink(lport); 1989 } 1990 return 0; 1991 } 1992 1993 /* 1994 * During removal we need to wait for all the vports associated with a port 1995 * to be destroyed so we avoid a race condition where libfc is still trying 1996 * to reap vports while the driver remove function has already reaped the 1997 * driver contexts associated with the physical port. 1998 */ 1999 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf) 2000 { 2001 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host); 2002 2003 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 2004 "Entered.\n"); 2005 while (fc_host->npiv_vports_inuse > 0) { 2006 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 2007 "Waiting for all vports to be reaped.\n"); 2008 msleep(1000); 2009 } 2010 } 2011 2012 /** 2013 * qedf_fcoe_reset - Resets the fcoe 2014 * 2015 * @shost: shost the reset is from 2016 * 2017 * Returns: always 0 2018 */ 2019 static int qedf_fcoe_reset(struct Scsi_Host *shost) 2020 { 2021 struct fc_lport *lport = shost_priv(shost); 2022 2023 qedf_ctx_soft_reset(lport); 2024 return 0; 2025 } 2026 2027 static void qedf_get_host_port_id(struct Scsi_Host *shost) 2028 { 2029 struct fc_lport *lport = shost_priv(shost); 2030 2031 fc_host_port_id(shost) = lport->port_id; 2032 } 2033 2034 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host 2035 *shost) 2036 { 2037 struct fc_host_statistics *qedf_stats; 2038 struct fc_lport *lport = shost_priv(shost); 2039 struct qedf_ctx *qedf = lport_priv(lport); 2040 struct qed_fcoe_stats *fw_fcoe_stats; 2041 2042 qedf_stats = fc_get_host_stats(shost); 2043 2044 /* We don't collect offload stats for specific NPIV ports */ 2045 if (lport->vport) 2046 goto out; 2047 2048 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL); 2049 if (!fw_fcoe_stats) { 2050 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for " 2051 "fw_fcoe_stats.\n"); 2052 goto out; 2053 } 2054 2055 mutex_lock(&qedf->stats_mutex); 2056 2057 /* Query firmware for offload stats */ 2058 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats); 2059 2060 /* 2061 * The expectation is that we add our offload stats to the stats 2062 * being maintained by libfc each time the fc_get_host_status callback 2063 * is invoked. The additions are not carried over for each call to 2064 * the fc_get_host_stats callback. 2065 */ 2066 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt + 2067 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt + 2068 fw_fcoe_stats->fcoe_tx_other_pkt_cnt; 2069 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt + 2070 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt + 2071 fw_fcoe_stats->fcoe_rx_other_pkt_cnt; 2072 qedf_stats->fcp_input_megabytes += 2073 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000); 2074 qedf_stats->fcp_output_megabytes += 2075 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000); 2076 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4; 2077 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4; 2078 qedf_stats->invalid_crc_count += 2079 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt; 2080 qedf_stats->dumped_frames = 2081 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 2082 qedf_stats->error_frames += 2083 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 2084 qedf_stats->fcp_input_requests += qedf->input_requests; 2085 qedf_stats->fcp_output_requests += qedf->output_requests; 2086 qedf_stats->fcp_control_requests += qedf->control_requests; 2087 qedf_stats->fcp_packet_aborts += qedf->packet_aborts; 2088 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures; 2089 2090 mutex_unlock(&qedf->stats_mutex); 2091 kfree(fw_fcoe_stats); 2092 out: 2093 return qedf_stats; 2094 } 2095 2096 static struct fc_function_template qedf_fc_transport_fn = { 2097 .show_host_node_name = 1, 2098 .show_host_port_name = 1, 2099 .show_host_supported_classes = 1, 2100 .show_host_supported_fc4s = 1, 2101 .show_host_active_fc4s = 1, 2102 .show_host_maxframe_size = 1, 2103 2104 .get_host_port_id = qedf_get_host_port_id, 2105 .show_host_port_id = 1, 2106 .show_host_supported_speeds = 1, 2107 .get_host_speed = fc_get_host_speed, 2108 .show_host_speed = 1, 2109 .show_host_port_type = 1, 2110 .get_host_port_state = fc_get_host_port_state, 2111 .show_host_port_state = 1, 2112 .show_host_symbolic_name = 1, 2113 2114 /* 2115 * Tell FC transport to allocate enough space to store the backpointer 2116 * for the associate qedf_rport struct. 2117 */ 2118 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2119 sizeof(struct qedf_rport)), 2120 .show_rport_maxframe_size = 1, 2121 .show_rport_supported_classes = 1, 2122 .show_host_fabric_name = 1, 2123 .show_starget_node_name = 1, 2124 .show_starget_port_name = 1, 2125 .show_starget_port_id = 1, 2126 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2127 .show_rport_dev_loss_tmo = 1, 2128 .get_fc_host_stats = qedf_fc_get_host_stats, 2129 .issue_fc_host_lip = qedf_fcoe_reset, 2130 .vport_create = qedf_vport_create, 2131 .vport_delete = qedf_vport_destroy, 2132 .vport_disable = qedf_vport_disable, 2133 .bsg_request = fc_lport_bsg_request, 2134 }; 2135 2136 static struct fc_function_template qedf_fc_vport_transport_fn = { 2137 .show_host_node_name = 1, 2138 .show_host_port_name = 1, 2139 .show_host_supported_classes = 1, 2140 .show_host_supported_fc4s = 1, 2141 .show_host_active_fc4s = 1, 2142 .show_host_maxframe_size = 1, 2143 .show_host_port_id = 1, 2144 .show_host_supported_speeds = 1, 2145 .get_host_speed = fc_get_host_speed, 2146 .show_host_speed = 1, 2147 .show_host_port_type = 1, 2148 .get_host_port_state = fc_get_host_port_state, 2149 .show_host_port_state = 1, 2150 .show_host_symbolic_name = 1, 2151 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2152 sizeof(struct qedf_rport)), 2153 .show_rport_maxframe_size = 1, 2154 .show_rport_supported_classes = 1, 2155 .show_host_fabric_name = 1, 2156 .show_starget_node_name = 1, 2157 .show_starget_port_name = 1, 2158 .show_starget_port_id = 1, 2159 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2160 .show_rport_dev_loss_tmo = 1, 2161 .get_fc_host_stats = fc_get_host_stats, 2162 .issue_fc_host_lip = qedf_fcoe_reset, 2163 .bsg_request = fc_lport_bsg_request, 2164 }; 2165 2166 static bool qedf_fp_has_work(struct qedf_fastpath *fp) 2167 { 2168 struct qedf_ctx *qedf = fp->qedf; 2169 struct global_queue *que; 2170 struct qed_sb_info *sb_info = fp->sb_info; 2171 struct status_block_e4 *sb = sb_info->sb_virt; 2172 u16 prod_idx; 2173 2174 /* Get the pointer to the global CQ this completion is on */ 2175 que = qedf->global_queues[fp->sb_id]; 2176 2177 /* Be sure all responses have been written to PI */ 2178 rmb(); 2179 2180 /* Get the current firmware producer index */ 2181 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2182 2183 return (que->cq_prod_idx != prod_idx); 2184 } 2185 2186 /* 2187 * Interrupt handler code. 2188 */ 2189 2190 /* Process completion queue and copy CQE contents for deferred processesing 2191 * 2192 * Return true if we should wake the I/O thread, false if not. 2193 */ 2194 static bool qedf_process_completions(struct qedf_fastpath *fp) 2195 { 2196 struct qedf_ctx *qedf = fp->qedf; 2197 struct qed_sb_info *sb_info = fp->sb_info; 2198 struct status_block_e4 *sb = sb_info->sb_virt; 2199 struct global_queue *que; 2200 u16 prod_idx; 2201 struct fcoe_cqe *cqe; 2202 struct qedf_io_work *io_work; 2203 int num_handled = 0; 2204 unsigned int cpu; 2205 struct qedf_ioreq *io_req = NULL; 2206 u16 xid; 2207 u16 new_cqes; 2208 u32 comp_type; 2209 2210 /* Get the current firmware producer index */ 2211 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2212 2213 /* Get the pointer to the global CQ this completion is on */ 2214 que = qedf->global_queues[fp->sb_id]; 2215 2216 /* Calculate the amount of new elements since last processing */ 2217 new_cqes = (prod_idx >= que->cq_prod_idx) ? 2218 (prod_idx - que->cq_prod_idx) : 2219 0x10000 - que->cq_prod_idx + prod_idx; 2220 2221 /* Save producer index */ 2222 que->cq_prod_idx = prod_idx; 2223 2224 while (new_cqes) { 2225 fp->completions++; 2226 num_handled++; 2227 cqe = &que->cq[que->cq_cons_idx]; 2228 2229 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2230 FCOE_CQE_CQE_TYPE_MASK; 2231 2232 /* 2233 * Process unsolicited CQEs directly in the interrupt handler 2234 * sine we need the fastpath ID 2235 */ 2236 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) { 2237 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL, 2238 "Unsolicated CQE.\n"); 2239 qedf_process_unsol_compl(qedf, fp->sb_id, cqe); 2240 /* 2241 * Don't add a work list item. Increment consumer 2242 * consumer index and move on. 2243 */ 2244 goto inc_idx; 2245 } 2246 2247 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2248 io_req = &qedf->cmd_mgr->cmds[xid]; 2249 2250 /* 2251 * Figure out which percpu thread we should queue this I/O 2252 * on. 2253 */ 2254 if (!io_req) 2255 /* If there is not io_req assocated with this CQE 2256 * just queue it on CPU 0 2257 */ 2258 cpu = 0; 2259 else { 2260 cpu = io_req->cpu; 2261 io_req->int_cpu = smp_processor_id(); 2262 } 2263 2264 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC); 2265 if (!io_work) { 2266 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate " 2267 "work for I/O completion.\n"); 2268 continue; 2269 } 2270 memset(io_work, 0, sizeof(struct qedf_io_work)); 2271 2272 INIT_WORK(&io_work->work, qedf_fp_io_handler); 2273 2274 /* Copy contents of CQE for deferred processing */ 2275 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe)); 2276 2277 io_work->qedf = fp->qedf; 2278 io_work->fp = NULL; /* Only used for unsolicited frames */ 2279 2280 queue_work_on(cpu, qedf_io_wq, &io_work->work); 2281 2282 inc_idx: 2283 que->cq_cons_idx++; 2284 if (que->cq_cons_idx == fp->cq_num_entries) 2285 que->cq_cons_idx = 0; 2286 new_cqes--; 2287 } 2288 2289 return true; 2290 } 2291 2292 2293 /* MSI-X fastpath handler code */ 2294 static irqreturn_t qedf_msix_handler(int irq, void *dev_id) 2295 { 2296 struct qedf_fastpath *fp = dev_id; 2297 2298 if (!fp) { 2299 QEDF_ERR(NULL, "fp is null.\n"); 2300 return IRQ_HANDLED; 2301 } 2302 if (!fp->sb_info) { 2303 QEDF_ERR(NULL, "fp->sb_info in null."); 2304 return IRQ_HANDLED; 2305 } 2306 2307 /* 2308 * Disable interrupts for this status block while we process new 2309 * completions 2310 */ 2311 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/); 2312 2313 while (1) { 2314 qedf_process_completions(fp); 2315 2316 if (qedf_fp_has_work(fp) == 0) { 2317 /* Update the sb information */ 2318 qed_sb_update_sb_idx(fp->sb_info); 2319 2320 /* Check for more work */ 2321 rmb(); 2322 2323 if (qedf_fp_has_work(fp) == 0) { 2324 /* Re-enable interrupts */ 2325 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 2326 return IRQ_HANDLED; 2327 } 2328 } 2329 } 2330 2331 /* Do we ever want to break out of above loop? */ 2332 return IRQ_HANDLED; 2333 } 2334 2335 /* simd handler for MSI/INTa */ 2336 static void qedf_simd_int_handler(void *cookie) 2337 { 2338 /* Cookie is qedf_ctx struct */ 2339 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2340 2341 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf); 2342 } 2343 2344 #define QEDF_SIMD_HANDLER_NUM 0 2345 static void qedf_sync_free_irqs(struct qedf_ctx *qedf) 2346 { 2347 int i; 2348 u16 vector_idx = 0; 2349 u32 vector; 2350 2351 if (qedf->int_info.msix_cnt) { 2352 for (i = 0; i < qedf->int_info.used_cnt; i++) { 2353 vector_idx = i * qedf->dev_info.common.num_hwfns + 2354 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2355 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2356 "Freeing IRQ #%d vector_idx=%d.\n", 2357 i, vector_idx); 2358 vector = qedf->int_info.msix[vector_idx].vector; 2359 synchronize_irq(vector); 2360 irq_set_affinity_hint(vector, NULL); 2361 irq_set_affinity_notifier(vector, NULL); 2362 free_irq(vector, &qedf->fp_array[i]); 2363 } 2364 } else 2365 qed_ops->common->simd_handler_clean(qedf->cdev, 2366 QEDF_SIMD_HANDLER_NUM); 2367 2368 qedf->int_info.used_cnt = 0; 2369 qed_ops->common->set_fp_int(qedf->cdev, 0); 2370 } 2371 2372 static int qedf_request_msix_irq(struct qedf_ctx *qedf) 2373 { 2374 int i, rc, cpu; 2375 u16 vector_idx = 0; 2376 u32 vector; 2377 2378 cpu = cpumask_first(cpu_online_mask); 2379 for (i = 0; i < qedf->num_queues; i++) { 2380 vector_idx = i * qedf->dev_info.common.num_hwfns + 2381 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2382 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2383 "Requesting IRQ #%d vector_idx=%d.\n", 2384 i, vector_idx); 2385 vector = qedf->int_info.msix[vector_idx].vector; 2386 rc = request_irq(vector, qedf_msix_handler, 0, "qedf", 2387 &qedf->fp_array[i]); 2388 2389 if (rc) { 2390 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n"); 2391 qedf_sync_free_irqs(qedf); 2392 return rc; 2393 } 2394 2395 qedf->int_info.used_cnt++; 2396 rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu)); 2397 cpu = cpumask_next(cpu, cpu_online_mask); 2398 } 2399 2400 return 0; 2401 } 2402 2403 static int qedf_setup_int(struct qedf_ctx *qedf) 2404 { 2405 int rc = 0; 2406 2407 /* 2408 * Learn interrupt configuration 2409 */ 2410 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus()); 2411 if (rc <= 0) 2412 return 0; 2413 2414 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info); 2415 if (rc) 2416 return 0; 2417 2418 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = " 2419 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt, 2420 num_online_cpus()); 2421 2422 if (qedf->int_info.msix_cnt) 2423 return qedf_request_msix_irq(qedf); 2424 2425 qed_ops->common->simd_handler_config(qedf->cdev, &qedf, 2426 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler); 2427 qedf->int_info.used_cnt = 1; 2428 2429 QEDF_ERR(&qedf->dbg_ctx, 2430 "Cannot load driver due to a lack of MSI-X vectors.\n"); 2431 return -EINVAL; 2432 } 2433 2434 /* Main function for libfc frame reception */ 2435 static void qedf_recv_frame(struct qedf_ctx *qedf, 2436 struct sk_buff *skb) 2437 { 2438 u32 fr_len; 2439 struct fc_lport *lport; 2440 struct fc_frame_header *fh; 2441 struct fcoe_crc_eof crc_eof; 2442 struct fc_frame *fp; 2443 u8 *mac = NULL; 2444 u8 *dest_mac = NULL; 2445 struct fcoe_hdr *hp; 2446 struct qedf_rport *fcport; 2447 struct fc_lport *vn_port; 2448 u32 f_ctl; 2449 2450 lport = qedf->lport; 2451 if (lport == NULL || lport->state == LPORT_ST_DISABLED) { 2452 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n"); 2453 kfree_skb(skb); 2454 return; 2455 } 2456 2457 if (skb_is_nonlinear(skb)) 2458 skb_linearize(skb); 2459 mac = eth_hdr(skb)->h_source; 2460 dest_mac = eth_hdr(skb)->h_dest; 2461 2462 /* Pull the header */ 2463 hp = (struct fcoe_hdr *)skb->data; 2464 fh = (struct fc_frame_header *) skb_transport_header(skb); 2465 skb_pull(skb, sizeof(struct fcoe_hdr)); 2466 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 2467 2468 fp = (struct fc_frame *)skb; 2469 fc_frame_init(fp); 2470 fr_dev(fp) = lport; 2471 fr_sof(fp) = hp->fcoe_sof; 2472 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 2473 QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n"); 2474 kfree_skb(skb); 2475 return; 2476 } 2477 fr_eof(fp) = crc_eof.fcoe_eof; 2478 fr_crc(fp) = crc_eof.fcoe_crc32; 2479 if (pskb_trim(skb, fr_len)) { 2480 QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n"); 2481 kfree_skb(skb); 2482 return; 2483 } 2484 2485 fh = fc_frame_header_get(fp); 2486 2487 /* 2488 * Invalid frame filters. 2489 */ 2490 2491 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 2492 fh->fh_type == FC_TYPE_FCP) { 2493 /* Drop FCP data. We dont this in L2 path */ 2494 kfree_skb(skb); 2495 return; 2496 } 2497 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 2498 fh->fh_type == FC_TYPE_ELS) { 2499 switch (fc_frame_payload_op(fp)) { 2500 case ELS_LOGO: 2501 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 2502 /* drop non-FIP LOGO */ 2503 kfree_skb(skb); 2504 return; 2505 } 2506 break; 2507 } 2508 } 2509 2510 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 2511 /* Drop incoming ABTS */ 2512 kfree_skb(skb); 2513 return; 2514 } 2515 2516 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { 2517 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2518 "FC frame d_id mismatch with MAC %pM.\n", dest_mac); 2519 kfree_skb(skb); 2520 return; 2521 } 2522 2523 if (qedf->ctlr.state) { 2524 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) { 2525 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2526 "Wrong source address: mac:%pM dest_addr:%pM.\n", 2527 mac, qedf->ctlr.dest_addr); 2528 kfree_skb(skb); 2529 return; 2530 } 2531 } 2532 2533 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 2534 2535 /* 2536 * If the destination ID from the frame header does not match what we 2537 * have on record for lport and the search for a NPIV port came up 2538 * empty then this is not addressed to our port so simply drop it. 2539 */ 2540 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { 2541 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2542 "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n", 2543 lport->port_id, ntoh24(fh->fh_d_id)); 2544 kfree_skb(skb); 2545 return; 2546 } 2547 2548 f_ctl = ntoh24(fh->fh_f_ctl); 2549 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) && 2550 (f_ctl & FC_FC_EX_CTX)) { 2551 /* Drop incoming ABTS response that has both SEQ/EX CTX set */ 2552 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2553 "Dropping ABTS response as both SEQ/EX CTX set.\n"); 2554 kfree_skb(skb); 2555 return; 2556 } 2557 2558 /* 2559 * If a connection is uploading, drop incoming FCoE frames as there 2560 * is a small window where we could try to return a frame while libfc 2561 * is trying to clean things up. 2562 */ 2563 2564 /* Get fcport associated with d_id if it exists */ 2565 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 2566 2567 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 2568 &fcport->flags)) { 2569 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2570 "Connection uploading, dropping fp=%p.\n", fp); 2571 kfree_skb(skb); 2572 return; 2573 } 2574 2575 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: " 2576 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp, 2577 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, 2578 fh->fh_type); 2579 if (qedf_dump_frames) 2580 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 2581 1, skb->data, skb->len, false); 2582 fc_exch_recv(lport, fp); 2583 } 2584 2585 static void qedf_ll2_process_skb(struct work_struct *work) 2586 { 2587 struct qedf_skb_work *skb_work = 2588 container_of(work, struct qedf_skb_work, work); 2589 struct qedf_ctx *qedf = skb_work->qedf; 2590 struct sk_buff *skb = skb_work->skb; 2591 struct ethhdr *eh; 2592 2593 if (!qedf) { 2594 QEDF_ERR(NULL, "qedf is NULL\n"); 2595 goto err_out; 2596 } 2597 2598 eh = (struct ethhdr *)skb->data; 2599 2600 /* Undo VLAN encapsulation */ 2601 if (eh->h_proto == htons(ETH_P_8021Q)) { 2602 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); 2603 eh = skb_pull(skb, VLAN_HLEN); 2604 skb_reset_mac_header(skb); 2605 } 2606 2607 /* 2608 * Process either a FIP frame or FCoE frame based on the 2609 * protocol value. If it's not either just drop the 2610 * frame. 2611 */ 2612 if (eh->h_proto == htons(ETH_P_FIP)) { 2613 qedf_fip_recv(qedf, skb); 2614 goto out; 2615 } else if (eh->h_proto == htons(ETH_P_FCOE)) { 2616 __skb_pull(skb, ETH_HLEN); 2617 qedf_recv_frame(qedf, skb); 2618 goto out; 2619 } else 2620 goto err_out; 2621 2622 err_out: 2623 kfree_skb(skb); 2624 out: 2625 kfree(skb_work); 2626 return; 2627 } 2628 2629 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb, 2630 u32 arg1, u32 arg2) 2631 { 2632 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2633 struct qedf_skb_work *skb_work; 2634 2635 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 2636 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2637 "Dropping frame as link state is down.\n"); 2638 kfree_skb(skb); 2639 return 0; 2640 } 2641 2642 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC); 2643 if (!skb_work) { 2644 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so " 2645 "dropping frame.\n"); 2646 kfree_skb(skb); 2647 return 0; 2648 } 2649 2650 INIT_WORK(&skb_work->work, qedf_ll2_process_skb); 2651 skb_work->skb = skb; 2652 skb_work->qedf = qedf; 2653 queue_work(qedf->ll2_recv_wq, &skb_work->work); 2654 2655 return 0; 2656 } 2657 2658 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = { 2659 .rx_cb = qedf_ll2_rx, 2660 .tx_cb = NULL, 2661 }; 2662 2663 /* Main thread to process I/O completions */ 2664 void qedf_fp_io_handler(struct work_struct *work) 2665 { 2666 struct qedf_io_work *io_work = 2667 container_of(work, struct qedf_io_work, work); 2668 u32 comp_type; 2669 2670 /* 2671 * Deferred part of unsolicited CQE sends 2672 * frame to libfc. 2673 */ 2674 comp_type = (io_work->cqe.cqe_data >> 2675 FCOE_CQE_CQE_TYPE_SHIFT) & 2676 FCOE_CQE_CQE_TYPE_MASK; 2677 if (comp_type == FCOE_UNSOLIC_CQE_TYPE && 2678 io_work->fp) 2679 fc_exch_recv(io_work->qedf->lport, io_work->fp); 2680 else 2681 qedf_process_cqe(io_work->qedf, &io_work->cqe); 2682 2683 kfree(io_work); 2684 } 2685 2686 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf, 2687 struct qed_sb_info *sb_info, u16 sb_id) 2688 { 2689 struct status_block_e4 *sb_virt; 2690 dma_addr_t sb_phys; 2691 int ret; 2692 2693 sb_virt = dma_alloc_coherent(&qedf->pdev->dev, 2694 sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL); 2695 2696 if (!sb_virt) { 2697 QEDF_ERR(&qedf->dbg_ctx, 2698 "Status block allocation failed for id = %d.\n", 2699 sb_id); 2700 return -ENOMEM; 2701 } 2702 2703 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys, 2704 sb_id, QED_SB_TYPE_STORAGE); 2705 2706 if (ret) { 2707 QEDF_ERR(&qedf->dbg_ctx, 2708 "Status block initialization failed (0x%x) for id = %d.\n", 2709 ret, sb_id); 2710 return ret; 2711 } 2712 2713 return 0; 2714 } 2715 2716 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info) 2717 { 2718 if (sb_info->sb_virt) 2719 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt), 2720 (void *)sb_info->sb_virt, sb_info->sb_phys); 2721 } 2722 2723 static void qedf_destroy_sb(struct qedf_ctx *qedf) 2724 { 2725 int id; 2726 struct qedf_fastpath *fp = NULL; 2727 2728 for (id = 0; id < qedf->num_queues; id++) { 2729 fp = &(qedf->fp_array[id]); 2730 if (fp->sb_id == QEDF_SB_ID_NULL) 2731 break; 2732 qedf_free_sb(qedf, fp->sb_info); 2733 kfree(fp->sb_info); 2734 } 2735 kfree(qedf->fp_array); 2736 } 2737 2738 static int qedf_prepare_sb(struct qedf_ctx *qedf) 2739 { 2740 int id; 2741 struct qedf_fastpath *fp; 2742 int ret; 2743 2744 qedf->fp_array = 2745 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath), 2746 GFP_KERNEL); 2747 2748 if (!qedf->fp_array) { 2749 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation " 2750 "failed.\n"); 2751 return -ENOMEM; 2752 } 2753 2754 for (id = 0; id < qedf->num_queues; id++) { 2755 fp = &(qedf->fp_array[id]); 2756 fp->sb_id = QEDF_SB_ID_NULL; 2757 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL); 2758 if (!fp->sb_info) { 2759 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct " 2760 "allocation failed.\n"); 2761 goto err; 2762 } 2763 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id); 2764 if (ret) { 2765 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and " 2766 "initialization failed.\n"); 2767 goto err; 2768 } 2769 fp->sb_id = id; 2770 fp->qedf = qedf; 2771 fp->cq_num_entries = 2772 qedf->global_queues[id]->cq_mem_size / 2773 sizeof(struct fcoe_cqe); 2774 } 2775 err: 2776 return 0; 2777 } 2778 2779 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe) 2780 { 2781 u16 xid; 2782 struct qedf_ioreq *io_req; 2783 struct qedf_rport *fcport; 2784 u32 comp_type; 2785 2786 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2787 FCOE_CQE_CQE_TYPE_MASK; 2788 2789 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2790 io_req = &qedf->cmd_mgr->cmds[xid]; 2791 2792 /* Completion not for a valid I/O anymore so just return */ 2793 if (!io_req) { 2794 QEDF_ERR(&qedf->dbg_ctx, 2795 "io_req is NULL for xid=0x%x.\n", xid); 2796 return; 2797 } 2798 2799 fcport = io_req->fcport; 2800 2801 if (fcport == NULL) { 2802 QEDF_ERR(&qedf->dbg_ctx, 2803 "fcport is NULL for xid=0x%x io_req=%p.\n", 2804 xid, io_req); 2805 return; 2806 } 2807 2808 /* 2809 * Check that fcport is offloaded. If it isn't then the spinlock 2810 * isn't valid and shouldn't be taken. We should just return. 2811 */ 2812 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 2813 QEDF_ERR(&qedf->dbg_ctx, 2814 "Session not offloaded yet, fcport = %p.\n", fcport); 2815 return; 2816 } 2817 2818 2819 switch (comp_type) { 2820 case FCOE_GOOD_COMPLETION_CQE_TYPE: 2821 atomic_inc(&fcport->free_sqes); 2822 switch (io_req->cmd_type) { 2823 case QEDF_SCSI_CMD: 2824 qedf_scsi_completion(qedf, cqe, io_req); 2825 break; 2826 case QEDF_ELS: 2827 qedf_process_els_compl(qedf, cqe, io_req); 2828 break; 2829 case QEDF_TASK_MGMT_CMD: 2830 qedf_process_tmf_compl(qedf, cqe, io_req); 2831 break; 2832 case QEDF_SEQ_CLEANUP: 2833 qedf_process_seq_cleanup_compl(qedf, cqe, io_req); 2834 break; 2835 } 2836 break; 2837 case FCOE_ERROR_DETECTION_CQE_TYPE: 2838 atomic_inc(&fcport->free_sqes); 2839 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2840 "Error detect CQE.\n"); 2841 qedf_process_error_detect(qedf, cqe, io_req); 2842 break; 2843 case FCOE_EXCH_CLEANUP_CQE_TYPE: 2844 atomic_inc(&fcport->free_sqes); 2845 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2846 "Cleanup CQE.\n"); 2847 qedf_process_cleanup_compl(qedf, cqe, io_req); 2848 break; 2849 case FCOE_ABTS_CQE_TYPE: 2850 atomic_inc(&fcport->free_sqes); 2851 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2852 "Abort CQE.\n"); 2853 qedf_process_abts_compl(qedf, cqe, io_req); 2854 break; 2855 case FCOE_DUMMY_CQE_TYPE: 2856 atomic_inc(&fcport->free_sqes); 2857 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2858 "Dummy CQE.\n"); 2859 break; 2860 case FCOE_LOCAL_COMP_CQE_TYPE: 2861 atomic_inc(&fcport->free_sqes); 2862 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2863 "Local completion CQE.\n"); 2864 break; 2865 case FCOE_WARNING_CQE_TYPE: 2866 atomic_inc(&fcport->free_sqes); 2867 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2868 "Warning CQE.\n"); 2869 qedf_process_warning_compl(qedf, cqe, io_req); 2870 break; 2871 case MAX_FCOE_CQE_TYPE: 2872 atomic_inc(&fcport->free_sqes); 2873 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2874 "Max FCoE CQE.\n"); 2875 break; 2876 default: 2877 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2878 "Default CQE.\n"); 2879 break; 2880 } 2881 } 2882 2883 static void qedf_free_bdq(struct qedf_ctx *qedf) 2884 { 2885 int i; 2886 2887 if (qedf->bdq_pbl_list) 2888 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE, 2889 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma); 2890 2891 if (qedf->bdq_pbl) 2892 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size, 2893 qedf->bdq_pbl, qedf->bdq_pbl_dma); 2894 2895 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2896 if (qedf->bdq[i].buf_addr) { 2897 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE, 2898 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma); 2899 } 2900 } 2901 } 2902 2903 static void qedf_free_global_queues(struct qedf_ctx *qedf) 2904 { 2905 int i; 2906 struct global_queue **gl = qedf->global_queues; 2907 2908 for (i = 0; i < qedf->num_queues; i++) { 2909 if (!gl[i]) 2910 continue; 2911 2912 if (gl[i]->cq) 2913 dma_free_coherent(&qedf->pdev->dev, 2914 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma); 2915 if (gl[i]->cq_pbl) 2916 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size, 2917 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 2918 2919 kfree(gl[i]); 2920 } 2921 2922 qedf_free_bdq(qedf); 2923 } 2924 2925 static int qedf_alloc_bdq(struct qedf_ctx *qedf) 2926 { 2927 int i; 2928 struct scsi_bd *pbl; 2929 u64 *list; 2930 dma_addr_t page; 2931 2932 /* Alloc dma memory for BDQ buffers */ 2933 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2934 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev, 2935 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL); 2936 if (!qedf->bdq[i].buf_addr) { 2937 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ " 2938 "buffer %d.\n", i); 2939 return -ENOMEM; 2940 } 2941 } 2942 2943 /* Alloc dma memory for BDQ page buffer list */ 2944 qedf->bdq_pbl_mem_size = 2945 QEDF_BDQ_SIZE * sizeof(struct scsi_bd); 2946 qedf->bdq_pbl_mem_size = 2947 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE); 2948 2949 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 2950 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL); 2951 if (!qedf->bdq_pbl) { 2952 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n"); 2953 return -ENOMEM; 2954 } 2955 2956 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2957 "BDQ PBL addr=0x%p dma=%pad\n", 2958 qedf->bdq_pbl, &qedf->bdq_pbl_dma); 2959 2960 /* 2961 * Populate BDQ PBL with physical and virtual address of individual 2962 * BDQ buffers 2963 */ 2964 pbl = (struct scsi_bd *)qedf->bdq_pbl; 2965 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2966 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma)); 2967 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma)); 2968 pbl->opaque.fcoe_opaque.hi = 0; 2969 /* Opaque lo data is an index into the BDQ array */ 2970 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i); 2971 pbl++; 2972 } 2973 2974 /* Allocate list of PBL pages */ 2975 qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev, 2976 QEDF_PAGE_SIZE, 2977 &qedf->bdq_pbl_list_dma, 2978 GFP_KERNEL); 2979 if (!qedf->bdq_pbl_list) { 2980 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n"); 2981 return -ENOMEM; 2982 } 2983 2984 /* 2985 * Now populate PBL list with pages that contain pointers to the 2986 * individual buffers. 2987 */ 2988 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size / 2989 QEDF_PAGE_SIZE; 2990 list = (u64 *)qedf->bdq_pbl_list; 2991 page = qedf->bdq_pbl_list_dma; 2992 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) { 2993 *list = qedf->bdq_pbl_dma; 2994 list++; 2995 page += QEDF_PAGE_SIZE; 2996 } 2997 2998 return 0; 2999 } 3000 3001 static int qedf_alloc_global_queues(struct qedf_ctx *qedf) 3002 { 3003 u32 *list; 3004 int i; 3005 int status = 0, rc; 3006 u32 *pbl; 3007 dma_addr_t page; 3008 int num_pages; 3009 3010 /* Allocate and map CQs, RQs */ 3011 /* 3012 * Number of global queues (CQ / RQ). This should 3013 * be <= number of available MSIX vectors for the PF 3014 */ 3015 if (!qedf->num_queues) { 3016 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n"); 3017 return 1; 3018 } 3019 3020 /* 3021 * Make sure we allocated the PBL that will contain the physical 3022 * addresses of our queues 3023 */ 3024 if (!qedf->p_cpuq) { 3025 status = 1; 3026 QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n"); 3027 goto mem_alloc_failure; 3028 } 3029 3030 qedf->global_queues = kzalloc((sizeof(struct global_queue *) 3031 * qedf->num_queues), GFP_KERNEL); 3032 if (!qedf->global_queues) { 3033 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global " 3034 "queues array ptr memory\n"); 3035 return -ENOMEM; 3036 } 3037 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3038 "qedf->global_queues=%p.\n", qedf->global_queues); 3039 3040 /* Allocate DMA coherent buffers for BDQ */ 3041 rc = qedf_alloc_bdq(qedf); 3042 if (rc) { 3043 QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n"); 3044 goto mem_alloc_failure; 3045 } 3046 3047 /* Allocate a CQ and an associated PBL for each MSI-X vector */ 3048 for (i = 0; i < qedf->num_queues; i++) { 3049 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue), 3050 GFP_KERNEL); 3051 if (!qedf->global_queues[i]) { 3052 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate " 3053 "global queue %d.\n", i); 3054 status = -ENOMEM; 3055 goto mem_alloc_failure; 3056 } 3057 3058 qedf->global_queues[i]->cq_mem_size = 3059 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3060 qedf->global_queues[i]->cq_mem_size = 3061 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE); 3062 3063 qedf->global_queues[i]->cq_pbl_size = 3064 (qedf->global_queues[i]->cq_mem_size / 3065 PAGE_SIZE) * sizeof(void *); 3066 qedf->global_queues[i]->cq_pbl_size = 3067 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE); 3068 3069 qedf->global_queues[i]->cq = 3070 dma_alloc_coherent(&qedf->pdev->dev, 3071 qedf->global_queues[i]->cq_mem_size, 3072 &qedf->global_queues[i]->cq_dma, 3073 GFP_KERNEL); 3074 3075 if (!qedf->global_queues[i]->cq) { 3076 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n"); 3077 status = -ENOMEM; 3078 goto mem_alloc_failure; 3079 } 3080 3081 qedf->global_queues[i]->cq_pbl = 3082 dma_alloc_coherent(&qedf->pdev->dev, 3083 qedf->global_queues[i]->cq_pbl_size, 3084 &qedf->global_queues[i]->cq_pbl_dma, 3085 GFP_KERNEL); 3086 3087 if (!qedf->global_queues[i]->cq_pbl) { 3088 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n"); 3089 status = -ENOMEM; 3090 goto mem_alloc_failure; 3091 } 3092 3093 /* Create PBL */ 3094 num_pages = qedf->global_queues[i]->cq_mem_size / 3095 QEDF_PAGE_SIZE; 3096 page = qedf->global_queues[i]->cq_dma; 3097 pbl = (u32 *)qedf->global_queues[i]->cq_pbl; 3098 3099 while (num_pages--) { 3100 *pbl = U64_LO(page); 3101 pbl++; 3102 *pbl = U64_HI(page); 3103 pbl++; 3104 page += QEDF_PAGE_SIZE; 3105 } 3106 /* Set the initial consumer index for cq */ 3107 qedf->global_queues[i]->cq_cons_idx = 0; 3108 } 3109 3110 list = (u32 *)qedf->p_cpuq; 3111 3112 /* 3113 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 3114 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 3115 * to the physical address which contains an array of pointers to 3116 * the physical addresses of the specific queue pages. 3117 */ 3118 for (i = 0; i < qedf->num_queues; i++) { 3119 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma); 3120 list++; 3121 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma); 3122 list++; 3123 *list = U64_LO(0); 3124 list++; 3125 *list = U64_HI(0); 3126 list++; 3127 } 3128 3129 return 0; 3130 3131 mem_alloc_failure: 3132 qedf_free_global_queues(qedf); 3133 return status; 3134 } 3135 3136 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf) 3137 { 3138 u8 sq_num_pbl_pages; 3139 u32 sq_mem_size; 3140 u32 cq_mem_size; 3141 u32 cq_num_entries; 3142 int rval; 3143 3144 /* 3145 * The number of completion queues/fastpath interrupts/status blocks 3146 * we allocation is the minimum off: 3147 * 3148 * Number of CPUs 3149 * Number allocated by qed for our PCI function 3150 */ 3151 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf); 3152 3153 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n", 3154 qedf->num_queues); 3155 3156 qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev, 3157 qedf->num_queues * sizeof(struct qedf_glbl_q_params), 3158 &qedf->hw_p_cpuq, GFP_KERNEL); 3159 3160 if (!qedf->p_cpuq) { 3161 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n"); 3162 return 1; 3163 } 3164 3165 rval = qedf_alloc_global_queues(qedf); 3166 if (rval) { 3167 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation " 3168 "failed.\n"); 3169 return 1; 3170 } 3171 3172 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */ 3173 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 3174 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE); 3175 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE); 3176 3177 /* Calculate CQ num entries */ 3178 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3179 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE); 3180 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe); 3181 3182 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params)); 3183 3184 /* Setup the value for fcoe PF */ 3185 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS; 3186 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS; 3187 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr = 3188 (u64)qedf->hw_p_cpuq; 3189 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages; 3190 3191 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0; 3192 3193 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries; 3194 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues; 3195 3196 /* log_page_size: 12 for 4KB pages */ 3197 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE); 3198 3199 qedf->pf_params.fcoe_pf_params.mtu = 9000; 3200 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI; 3201 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI; 3202 3203 /* BDQ address and size */ 3204 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] = 3205 qedf->bdq_pbl_list_dma; 3206 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] = 3207 qedf->bdq_pbl_list_num_entries; 3208 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE; 3209 3210 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3211 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n", 3212 qedf->bdq_pbl_list, 3213 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0], 3214 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]); 3215 3216 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3217 "cq_num_entries=%d.\n", 3218 qedf->pf_params.fcoe_pf_params.cq_num_entries); 3219 3220 return 0; 3221 } 3222 3223 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 3224 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf) 3225 { 3226 size_t size = 0; 3227 3228 if (qedf->p_cpuq) { 3229 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params); 3230 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq, 3231 qedf->hw_p_cpuq); 3232 } 3233 3234 qedf_free_global_queues(qedf); 3235 3236 kfree(qedf->global_queues); 3237 } 3238 3239 /* 3240 * PCI driver functions 3241 */ 3242 3243 static const struct pci_device_id qedf_pci_tbl[] = { 3244 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) }, 3245 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) }, 3246 {0} 3247 }; 3248 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl); 3249 3250 static struct pci_driver qedf_pci_driver = { 3251 .name = QEDF_MODULE_NAME, 3252 .id_table = qedf_pci_tbl, 3253 .probe = qedf_probe, 3254 .remove = qedf_remove, 3255 .shutdown = qedf_shutdown, 3256 }; 3257 3258 static int __qedf_probe(struct pci_dev *pdev, int mode) 3259 { 3260 int rc = -EINVAL; 3261 struct fc_lport *lport; 3262 struct qedf_ctx *qedf = NULL; 3263 struct Scsi_Host *host; 3264 bool is_vf = false; 3265 struct qed_ll2_params params; 3266 char host_buf[20]; 3267 struct qed_link_params link_params; 3268 int status; 3269 void *task_start, *task_end; 3270 struct qed_slowpath_params slowpath_params; 3271 struct qed_probe_params qed_params; 3272 u16 retry_cnt = 10; 3273 3274 /* 3275 * When doing error recovery we didn't reap the lport so don't try 3276 * to reallocate it. 3277 */ 3278 retry_probe: 3279 if (mode == QEDF_MODE_RECOVERY) 3280 msleep(2000); 3281 3282 if (mode != QEDF_MODE_RECOVERY) { 3283 lport = libfc_host_alloc(&qedf_host_template, 3284 sizeof(struct qedf_ctx)); 3285 3286 if (!lport) { 3287 QEDF_ERR(NULL, "Could not allocate lport.\n"); 3288 rc = -ENOMEM; 3289 goto err0; 3290 } 3291 3292 fc_disc_init(lport); 3293 3294 /* Initialize qedf_ctx */ 3295 qedf = lport_priv(lport); 3296 set_bit(QEDF_PROBING, &qedf->flags); 3297 qedf->lport = lport; 3298 qedf->ctlr.lp = lport; 3299 qedf->pdev = pdev; 3300 qedf->dbg_ctx.pdev = pdev; 3301 qedf->dbg_ctx.host_no = lport->host->host_no; 3302 spin_lock_init(&qedf->hba_lock); 3303 INIT_LIST_HEAD(&qedf->fcports); 3304 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1; 3305 atomic_set(&qedf->num_offloads, 0); 3306 qedf->stop_io_on_error = false; 3307 pci_set_drvdata(pdev, qedf); 3308 init_completion(&qedf->fipvlan_compl); 3309 mutex_init(&qedf->stats_mutex); 3310 mutex_init(&qedf->flush_mutex); 3311 qedf->flogi_pending = 0; 3312 3313 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, 3314 "QLogic FastLinQ FCoE Module qedf %s, " 3315 "FW %d.%d.%d.%d\n", QEDF_VERSION, 3316 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 3317 FW_ENGINEERING_VERSION); 3318 } else { 3319 /* Init pointers during recovery */ 3320 qedf = pci_get_drvdata(pdev); 3321 set_bit(QEDF_PROBING, &qedf->flags); 3322 lport = qedf->lport; 3323 } 3324 3325 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n"); 3326 3327 host = lport->host; 3328 3329 /* Allocate mempool for qedf_io_work structs */ 3330 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN, 3331 qedf_io_work_cache); 3332 if (qedf->io_mempool == NULL) { 3333 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n"); 3334 goto err1; 3335 } 3336 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n", 3337 qedf->io_mempool); 3338 3339 sprintf(host_buf, "qedf_%u_link", 3340 qedf->lport->host->host_no); 3341 qedf->link_update_wq = create_workqueue(host_buf); 3342 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update); 3343 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery); 3344 INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump); 3345 INIT_DELAYED_WORK(&qedf->stag_work, qedf_stag_change_work); 3346 qedf->fipvlan_retries = qedf_fipvlan_retries; 3347 /* Set a default prio in case DCBX doesn't converge */ 3348 if (qedf_default_prio > -1) { 3349 /* 3350 * This is the case where we pass a modparam in so we want to 3351 * honor it even if dcbx doesn't converge. 3352 */ 3353 qedf->prio = qedf_default_prio; 3354 } else 3355 qedf->prio = QEDF_DEFAULT_PRIO; 3356 3357 /* 3358 * Common probe. Takes care of basic hardware init and pci_* 3359 * functions. 3360 */ 3361 memset(&qed_params, 0, sizeof(qed_params)); 3362 qed_params.protocol = QED_PROTOCOL_FCOE; 3363 qed_params.dp_module = qedf_dp_module; 3364 qed_params.dp_level = qedf_dp_level; 3365 qed_params.is_vf = is_vf; 3366 qedf->cdev = qed_ops->common->probe(pdev, &qed_params); 3367 if (!qedf->cdev) { 3368 if ((mode == QEDF_MODE_RECOVERY) && retry_cnt) { 3369 QEDF_ERR(&qedf->dbg_ctx, 3370 "Retry %d initialize hardware\n", retry_cnt); 3371 retry_cnt--; 3372 goto retry_probe; 3373 } 3374 QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n"); 3375 rc = -ENODEV; 3376 goto err1; 3377 } 3378 3379 /* Learn information crucial for qedf to progress */ 3380 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3381 if (rc) { 3382 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n"); 3383 goto err1; 3384 } 3385 3386 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 3387 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n", 3388 qedf->dev_info.common.num_hwfns, 3389 qed_ops->common->get_affin_hwfn_idx(qedf->cdev)); 3390 3391 /* queue allocation code should come here 3392 * order should be 3393 * slowpath_start 3394 * status block allocation 3395 * interrupt registration (to get min number of queues) 3396 * set_fcoe_pf_param 3397 * qed_sp_fcoe_func_start 3398 */ 3399 rc = qedf_set_fcoe_pf_param(qedf); 3400 if (rc) { 3401 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n"); 3402 goto err2; 3403 } 3404 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3405 3406 /* Learn information crucial for qedf to progress */ 3407 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3408 if (rc) { 3409 QEDF_ERR(&qedf->dbg_ctx, "Failed to fill dev info.\n"); 3410 goto err2; 3411 } 3412 3413 if (mode != QEDF_MODE_RECOVERY) { 3414 qedf->devlink = qed_ops->common->devlink_register(qedf->cdev); 3415 if (IS_ERR(qedf->devlink)) { 3416 QEDF_ERR(&qedf->dbg_ctx, "Cannot register devlink\n"); 3417 qedf->devlink = NULL; 3418 } 3419 } 3420 3421 /* Record BDQ producer doorbell addresses */ 3422 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr; 3423 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr; 3424 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3425 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod, 3426 qedf->bdq_secondary_prod); 3427 3428 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf); 3429 3430 rc = qedf_prepare_sb(qedf); 3431 if (rc) { 3432 3433 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3434 goto err2; 3435 } 3436 3437 /* Start the Slowpath-process */ 3438 slowpath_params.int_mode = QED_INT_MODE_MSIX; 3439 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER; 3440 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER; 3441 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER; 3442 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER; 3443 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE); 3444 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params); 3445 if (rc) { 3446 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3447 goto err2; 3448 } 3449 3450 /* 3451 * update_pf_params needs to be called before and after slowpath 3452 * start 3453 */ 3454 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3455 3456 /* Setup interrupts */ 3457 rc = qedf_setup_int(qedf); 3458 if (rc) { 3459 QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n"); 3460 goto err3; 3461 } 3462 3463 rc = qed_ops->start(qedf->cdev, &qedf->tasks); 3464 if (rc) { 3465 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n"); 3466 goto err4; 3467 } 3468 task_start = qedf_get_task_mem(&qedf->tasks, 0); 3469 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1); 3470 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, " 3471 "end=%p block_size=%u.\n", task_start, task_end, 3472 qedf->tasks.size); 3473 3474 /* 3475 * We need to write the number of BDs in the BDQ we've preallocated so 3476 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 3477 * packet arrives. 3478 */ 3479 qedf->bdq_prod_idx = QEDF_BDQ_SIZE; 3480 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3481 "Writing %d to primary and secondary BDQ doorbell registers.\n", 3482 qedf->bdq_prod_idx); 3483 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod); 3484 readw(qedf->bdq_primary_prod); 3485 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod); 3486 readw(qedf->bdq_secondary_prod); 3487 3488 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3489 3490 /* Now that the dev_info struct has been filled in set the MAC 3491 * address 3492 */ 3493 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac); 3494 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n", 3495 qedf->mac); 3496 3497 /* 3498 * Set the WWNN and WWPN in the following way: 3499 * 3500 * If the info we get from qed is non-zero then use that to set the 3501 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based 3502 * on the MAC address. 3503 */ 3504 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) { 3505 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3506 "Setting WWPN and WWNN from qed dev_info.\n"); 3507 qedf->wwnn = qedf->dev_info.wwnn; 3508 qedf->wwpn = qedf->dev_info.wwpn; 3509 } else { 3510 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3511 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n"); 3512 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0); 3513 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0); 3514 } 3515 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx " 3516 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn); 3517 3518 sprintf(host_buf, "host_%d", host->host_no); 3519 qed_ops->common->set_name(qedf->cdev, host_buf); 3520 3521 /* Allocate cmd mgr */ 3522 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf); 3523 if (!qedf->cmd_mgr) { 3524 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n"); 3525 rc = -ENOMEM; 3526 goto err5; 3527 } 3528 3529 if (mode != QEDF_MODE_RECOVERY) { 3530 host->transportt = qedf_fc_transport_template; 3531 host->max_lun = qedf_max_lun; 3532 host->max_cmd_len = QEDF_MAX_CDB_LEN; 3533 host->can_queue = FCOE_PARAMS_NUM_TASKS; 3534 rc = scsi_add_host(host, &pdev->dev); 3535 if (rc) { 3536 QEDF_WARN(&qedf->dbg_ctx, 3537 "Error adding Scsi_Host rc=0x%x.\n", rc); 3538 goto err6; 3539 } 3540 } 3541 3542 memset(¶ms, 0, sizeof(params)); 3543 params.mtu = QEDF_LL2_BUF_SIZE; 3544 ether_addr_copy(params.ll2_mac_address, qedf->mac); 3545 3546 /* Start LL2 processing thread */ 3547 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no); 3548 qedf->ll2_recv_wq = 3549 create_workqueue(host_buf); 3550 if (!qedf->ll2_recv_wq) { 3551 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n"); 3552 rc = -ENOMEM; 3553 goto err7; 3554 } 3555 3556 #ifdef CONFIG_DEBUG_FS 3557 qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops, 3558 qedf_dbg_fops); 3559 #endif 3560 3561 /* Start LL2 */ 3562 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf); 3563 rc = qed_ops->ll2->start(qedf->cdev, ¶ms); 3564 if (rc) { 3565 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n"); 3566 goto err7; 3567 } 3568 set_bit(QEDF_LL2_STARTED, &qedf->flags); 3569 3570 /* Set initial FIP/FCoE VLAN to NULL */ 3571 qedf->vlan_id = 0; 3572 3573 /* 3574 * No need to setup fcoe_ctlr or fc_lport objects during recovery since 3575 * they were not reaped during the unload process. 3576 */ 3577 if (mode != QEDF_MODE_RECOVERY) { 3578 /* Setup imbedded fcoe controller */ 3579 qedf_fcoe_ctlr_setup(qedf); 3580 3581 /* Setup lport */ 3582 rc = qedf_lport_setup(qedf); 3583 if (rc) { 3584 QEDF_ERR(&(qedf->dbg_ctx), 3585 "qedf_lport_setup failed.\n"); 3586 goto err7; 3587 } 3588 } 3589 3590 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no); 3591 qedf->timer_work_queue = 3592 create_workqueue(host_buf); 3593 if (!qedf->timer_work_queue) { 3594 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer " 3595 "workqueue.\n"); 3596 rc = -ENOMEM; 3597 goto err7; 3598 } 3599 3600 /* DPC workqueue is not reaped during recovery unload */ 3601 if (mode != QEDF_MODE_RECOVERY) { 3602 sprintf(host_buf, "qedf_%u_dpc", 3603 qedf->lport->host->host_no); 3604 qedf->dpc_wq = create_workqueue(host_buf); 3605 } 3606 INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler); 3607 3608 /* 3609 * GRC dump and sysfs parameters are not reaped during the recovery 3610 * unload process. 3611 */ 3612 if (mode != QEDF_MODE_RECOVERY) { 3613 qedf->grcdump_size = 3614 qed_ops->common->dbg_all_data_size(qedf->cdev); 3615 if (qedf->grcdump_size) { 3616 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump, 3617 qedf->grcdump_size); 3618 if (rc) { 3619 QEDF_ERR(&(qedf->dbg_ctx), 3620 "GRC Dump buffer alloc failed.\n"); 3621 qedf->grcdump = NULL; 3622 } 3623 3624 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3625 "grcdump: addr=%p, size=%u.\n", 3626 qedf->grcdump, qedf->grcdump_size); 3627 } 3628 qedf_create_sysfs_ctx_attr(qedf); 3629 3630 /* Initialize I/O tracing for this adapter */ 3631 spin_lock_init(&qedf->io_trace_lock); 3632 qedf->io_trace_idx = 0; 3633 } 3634 3635 init_completion(&qedf->flogi_compl); 3636 3637 status = qed_ops->common->update_drv_state(qedf->cdev, true); 3638 if (status) 3639 QEDF_ERR(&(qedf->dbg_ctx), 3640 "Failed to send drv state to MFW.\n"); 3641 3642 memset(&link_params, 0, sizeof(struct qed_link_params)); 3643 link_params.link_up = true; 3644 status = qed_ops->common->set_link(qedf->cdev, &link_params); 3645 if (status) 3646 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n"); 3647 3648 /* Start/restart discovery */ 3649 if (mode == QEDF_MODE_RECOVERY) 3650 fcoe_ctlr_link_up(&qedf->ctlr); 3651 else 3652 fc_fabric_login(lport); 3653 3654 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n"); 3655 3656 clear_bit(QEDF_PROBING, &qedf->flags); 3657 3658 /* All good */ 3659 return 0; 3660 3661 err7: 3662 if (qedf->ll2_recv_wq) 3663 destroy_workqueue(qedf->ll2_recv_wq); 3664 fc_remove_host(qedf->lport->host); 3665 scsi_remove_host(qedf->lport->host); 3666 #ifdef CONFIG_DEBUG_FS 3667 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3668 #endif 3669 err6: 3670 qedf_cmd_mgr_free(qedf->cmd_mgr); 3671 err5: 3672 qed_ops->stop(qedf->cdev); 3673 err4: 3674 qedf_free_fcoe_pf_param(qedf); 3675 qedf_sync_free_irqs(qedf); 3676 err3: 3677 qed_ops->common->slowpath_stop(qedf->cdev); 3678 err2: 3679 qed_ops->common->remove(qedf->cdev); 3680 err1: 3681 scsi_host_put(lport->host); 3682 err0: 3683 if (qedf) { 3684 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n"); 3685 3686 clear_bit(QEDF_PROBING, &qedf->flags); 3687 } 3688 return rc; 3689 } 3690 3691 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id) 3692 { 3693 return __qedf_probe(pdev, QEDF_MODE_NORMAL); 3694 } 3695 3696 static void __qedf_remove(struct pci_dev *pdev, int mode) 3697 { 3698 struct qedf_ctx *qedf; 3699 int rc; 3700 3701 if (!pdev) { 3702 QEDF_ERR(NULL, "pdev is NULL.\n"); 3703 return; 3704 } 3705 3706 qedf = pci_get_drvdata(pdev); 3707 3708 /* 3709 * Prevent race where we're in board disable work and then try to 3710 * rmmod the module. 3711 */ 3712 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 3713 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n"); 3714 return; 3715 } 3716 3717 if (mode != QEDF_MODE_RECOVERY) 3718 set_bit(QEDF_UNLOADING, &qedf->flags); 3719 3720 /* Logoff the fabric to upload all connections */ 3721 if (mode == QEDF_MODE_RECOVERY) 3722 fcoe_ctlr_link_down(&qedf->ctlr); 3723 else 3724 fc_fabric_logoff(qedf->lport); 3725 3726 if (!qedf_wait_for_upload(qedf)) 3727 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 3728 3729 #ifdef CONFIG_DEBUG_FS 3730 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3731 #endif 3732 3733 /* Stop any link update handling */ 3734 cancel_delayed_work_sync(&qedf->link_update); 3735 destroy_workqueue(qedf->link_update_wq); 3736 qedf->link_update_wq = NULL; 3737 3738 if (qedf->timer_work_queue) 3739 destroy_workqueue(qedf->timer_work_queue); 3740 3741 /* Stop Light L2 */ 3742 clear_bit(QEDF_LL2_STARTED, &qedf->flags); 3743 qed_ops->ll2->stop(qedf->cdev); 3744 if (qedf->ll2_recv_wq) 3745 destroy_workqueue(qedf->ll2_recv_wq); 3746 3747 /* Stop fastpath */ 3748 qedf_sync_free_irqs(qedf); 3749 qedf_destroy_sb(qedf); 3750 3751 /* 3752 * During recovery don't destroy OS constructs that represent the 3753 * physical port. 3754 */ 3755 if (mode != QEDF_MODE_RECOVERY) { 3756 qedf_free_grc_dump_buf(&qedf->grcdump); 3757 qedf_remove_sysfs_ctx_attr(qedf); 3758 3759 /* Remove all SCSI/libfc/libfcoe structures */ 3760 fcoe_ctlr_destroy(&qedf->ctlr); 3761 fc_lport_destroy(qedf->lport); 3762 fc_remove_host(qedf->lport->host); 3763 scsi_remove_host(qedf->lport->host); 3764 } 3765 3766 qedf_cmd_mgr_free(qedf->cmd_mgr); 3767 3768 if (mode != QEDF_MODE_RECOVERY) { 3769 fc_exch_mgr_free(qedf->lport); 3770 fc_lport_free_stats(qedf->lport); 3771 3772 /* Wait for all vports to be reaped */ 3773 qedf_wait_for_vport_destroy(qedf); 3774 } 3775 3776 /* 3777 * Now that all connections have been uploaded we can stop the 3778 * rest of the qed operations 3779 */ 3780 qed_ops->stop(qedf->cdev); 3781 3782 if (mode != QEDF_MODE_RECOVERY) { 3783 if (qedf->dpc_wq) { 3784 /* Stop general DPC handling */ 3785 destroy_workqueue(qedf->dpc_wq); 3786 qedf->dpc_wq = NULL; 3787 } 3788 } 3789 3790 /* Final shutdown for the board */ 3791 qedf_free_fcoe_pf_param(qedf); 3792 if (mode != QEDF_MODE_RECOVERY) { 3793 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3794 pci_set_drvdata(pdev, NULL); 3795 } 3796 3797 rc = qed_ops->common->update_drv_state(qedf->cdev, false); 3798 if (rc) 3799 QEDF_ERR(&(qedf->dbg_ctx), 3800 "Failed to send drv state to MFW.\n"); 3801 3802 if (mode != QEDF_MODE_RECOVERY && qedf->devlink) { 3803 qed_ops->common->devlink_unregister(qedf->devlink); 3804 qedf->devlink = NULL; 3805 } 3806 3807 qed_ops->common->slowpath_stop(qedf->cdev); 3808 qed_ops->common->remove(qedf->cdev); 3809 3810 mempool_destroy(qedf->io_mempool); 3811 3812 /* Only reap the Scsi_host on a real removal */ 3813 if (mode != QEDF_MODE_RECOVERY) 3814 scsi_host_put(qedf->lport->host); 3815 } 3816 3817 static void qedf_remove(struct pci_dev *pdev) 3818 { 3819 /* Check to make sure this function wasn't already disabled */ 3820 if (!atomic_read(&pdev->enable_cnt)) 3821 return; 3822 3823 __qedf_remove(pdev, QEDF_MODE_NORMAL); 3824 } 3825 3826 void qedf_wq_grcdump(struct work_struct *work) 3827 { 3828 struct qedf_ctx *qedf = 3829 container_of(work, struct qedf_ctx, grcdump_work.work); 3830 3831 QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n"); 3832 qedf_capture_grc_dump(qedf); 3833 } 3834 3835 void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type) 3836 { 3837 struct qedf_ctx *qedf = dev; 3838 3839 QEDF_ERR(&(qedf->dbg_ctx), 3840 "Hardware error handler scheduled, event=%d.\n", 3841 err_type); 3842 3843 if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) { 3844 QEDF_ERR(&(qedf->dbg_ctx), 3845 "Already in recovery, not scheduling board disable work.\n"); 3846 return; 3847 } 3848 3849 switch (err_type) { 3850 case QED_HW_ERR_FAN_FAIL: 3851 schedule_delayed_work(&qedf->board_disable_work, 0); 3852 break; 3853 case QED_HW_ERR_MFW_RESP_FAIL: 3854 case QED_HW_ERR_HW_ATTN: 3855 case QED_HW_ERR_DMAE_FAIL: 3856 case QED_HW_ERR_FW_ASSERT: 3857 /* Prevent HW attentions from being reasserted */ 3858 qed_ops->common->attn_clr_enable(qedf->cdev, true); 3859 break; 3860 case QED_HW_ERR_RAMROD_FAIL: 3861 /* Prevent HW attentions from being reasserted */ 3862 qed_ops->common->attn_clr_enable(qedf->cdev, true); 3863 3864 if (qedf_enable_recovery && qedf->devlink) 3865 qed_ops->common->report_fatal_error(qedf->devlink, 3866 err_type); 3867 3868 break; 3869 default: 3870 break; 3871 } 3872 } 3873 3874 /* 3875 * Protocol TLV handler 3876 */ 3877 void qedf_get_protocol_tlv_data(void *dev, void *data) 3878 { 3879 struct qedf_ctx *qedf = dev; 3880 struct qed_mfw_tlv_fcoe *fcoe = data; 3881 struct fc_lport *lport; 3882 struct Scsi_Host *host; 3883 struct fc_host_attrs *fc_host; 3884 struct fc_host_statistics *hst; 3885 3886 if (!qedf) { 3887 QEDF_ERR(NULL, "qedf is null.\n"); 3888 return; 3889 } 3890 3891 if (test_bit(QEDF_PROBING, &qedf->flags)) { 3892 QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n"); 3893 return; 3894 } 3895 3896 lport = qedf->lport; 3897 host = lport->host; 3898 fc_host = shost_to_fc_host(host); 3899 3900 /* Force a refresh of the fc_host stats including offload stats */ 3901 hst = qedf_fc_get_host_stats(host); 3902 3903 fcoe->qos_pri_set = true; 3904 fcoe->qos_pri = 3; /* Hard coded to 3 in driver */ 3905 3906 fcoe->ra_tov_set = true; 3907 fcoe->ra_tov = lport->r_a_tov; 3908 3909 fcoe->ed_tov_set = true; 3910 fcoe->ed_tov = lport->e_d_tov; 3911 3912 fcoe->npiv_state_set = true; 3913 fcoe->npiv_state = 1; /* NPIV always enabled */ 3914 3915 fcoe->num_npiv_ids_set = true; 3916 fcoe->num_npiv_ids = fc_host->npiv_vports_inuse; 3917 3918 /* Certain attributes we only want to set if we've selected an FCF */ 3919 if (qedf->ctlr.sel_fcf) { 3920 fcoe->switch_name_set = true; 3921 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name); 3922 } 3923 3924 fcoe->port_state_set = true; 3925 /* For qedf we're either link down or fabric attach */ 3926 if (lport->link_up) 3927 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC; 3928 else 3929 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE; 3930 3931 fcoe->link_failures_set = true; 3932 fcoe->link_failures = (u16)hst->link_failure_count; 3933 3934 fcoe->fcoe_txq_depth_set = true; 3935 fcoe->fcoe_rxq_depth_set = true; 3936 fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS; 3937 fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS; 3938 3939 fcoe->fcoe_rx_frames_set = true; 3940 fcoe->fcoe_rx_frames = hst->rx_frames; 3941 3942 fcoe->fcoe_tx_frames_set = true; 3943 fcoe->fcoe_tx_frames = hst->tx_frames; 3944 3945 fcoe->fcoe_rx_bytes_set = true; 3946 fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000; 3947 3948 fcoe->fcoe_tx_bytes_set = true; 3949 fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000; 3950 3951 fcoe->crc_count_set = true; 3952 fcoe->crc_count = hst->invalid_crc_count; 3953 3954 fcoe->tx_abts_set = true; 3955 fcoe->tx_abts = hst->fcp_packet_aborts; 3956 3957 fcoe->tx_lun_rst_set = true; 3958 fcoe->tx_lun_rst = qedf->lun_resets; 3959 3960 fcoe->abort_task_sets_set = true; 3961 fcoe->abort_task_sets = qedf->packet_aborts; 3962 3963 fcoe->scsi_busy_set = true; 3964 fcoe->scsi_busy = qedf->busy; 3965 3966 fcoe->scsi_tsk_full_set = true; 3967 fcoe->scsi_tsk_full = qedf->task_set_fulls; 3968 } 3969 3970 /* Deferred work function to perform soft context reset on STAG change */ 3971 void qedf_stag_change_work(struct work_struct *work) 3972 { 3973 struct qedf_ctx *qedf = 3974 container_of(work, struct qedf_ctx, stag_work.work); 3975 3976 if (!qedf) { 3977 QEDF_ERR(NULL, "qedf is NULL"); 3978 return; 3979 } 3980 QEDF_ERR(&qedf->dbg_ctx, "Performing software context reset.\n"); 3981 qedf_ctx_soft_reset(qedf->lport); 3982 } 3983 3984 static void qedf_shutdown(struct pci_dev *pdev) 3985 { 3986 __qedf_remove(pdev, QEDF_MODE_NORMAL); 3987 } 3988 3989 /* 3990 * Recovery handler code 3991 */ 3992 static void qedf_schedule_recovery_handler(void *dev) 3993 { 3994 struct qedf_ctx *qedf = dev; 3995 3996 QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n"); 3997 schedule_delayed_work(&qedf->recovery_work, 0); 3998 } 3999 4000 static void qedf_recovery_handler(struct work_struct *work) 4001 { 4002 struct qedf_ctx *qedf = 4003 container_of(work, struct qedf_ctx, recovery_work.work); 4004 4005 if (test_and_set_bit(QEDF_IN_RECOVERY, &qedf->flags)) 4006 return; 4007 4008 /* 4009 * Call common_ops->recovery_prolog to allow the MFW to quiesce 4010 * any PCI transactions. 4011 */ 4012 qed_ops->common->recovery_prolog(qedf->cdev); 4013 4014 QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n"); 4015 __qedf_remove(qedf->pdev, QEDF_MODE_RECOVERY); 4016 /* 4017 * Reset link and dcbx to down state since we will not get a link down 4018 * event from the MFW but calling __qedf_remove will essentially be a 4019 * link down event. 4020 */ 4021 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 4022 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 4023 __qedf_probe(qedf->pdev, QEDF_MODE_RECOVERY); 4024 clear_bit(QEDF_IN_RECOVERY, &qedf->flags); 4025 QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n"); 4026 } 4027 4028 /* Generic TLV data callback */ 4029 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 4030 { 4031 struct qedf_ctx *qedf; 4032 4033 if (!dev) { 4034 QEDF_INFO(NULL, QEDF_LOG_EVT, 4035 "dev is NULL so ignoring get_generic_tlv_data request.\n"); 4036 return; 4037 } 4038 qedf = (struct qedf_ctx *)dev; 4039 4040 memset(data, 0, sizeof(struct qed_generic_tlvs)); 4041 ether_addr_copy(data->mac[0], qedf->mac); 4042 } 4043 4044 /* 4045 * Module Init/Remove 4046 */ 4047 4048 static int __init qedf_init(void) 4049 { 4050 int ret; 4051 4052 /* If debug=1 passed, set the default log mask */ 4053 if (qedf_debug == QEDF_LOG_DEFAULT) 4054 qedf_debug = QEDF_DEFAULT_LOG_MASK; 4055 4056 /* 4057 * Check that default prio for FIP/FCoE traffic is between 0..7 if a 4058 * value has been set 4059 */ 4060 if (qedf_default_prio > -1) 4061 if (qedf_default_prio > 7) { 4062 qedf_default_prio = QEDF_DEFAULT_PRIO; 4063 QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n", 4064 QEDF_DEFAULT_PRIO); 4065 } 4066 4067 /* Print driver banner */ 4068 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR, 4069 QEDF_VERSION); 4070 4071 /* Create kmem_cache for qedf_io_work structs */ 4072 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache", 4073 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL); 4074 if (qedf_io_work_cache == NULL) { 4075 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n"); 4076 goto err1; 4077 } 4078 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n", 4079 qedf_io_work_cache); 4080 4081 qed_ops = qed_get_fcoe_ops(); 4082 if (!qed_ops) { 4083 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n"); 4084 goto err1; 4085 } 4086 4087 #ifdef CONFIG_DEBUG_FS 4088 qedf_dbg_init("qedf"); 4089 #endif 4090 4091 qedf_fc_transport_template = 4092 fc_attach_transport(&qedf_fc_transport_fn); 4093 if (!qedf_fc_transport_template) { 4094 QEDF_ERR(NULL, "Could not register with FC transport\n"); 4095 goto err2; 4096 } 4097 4098 qedf_fc_vport_transport_template = 4099 fc_attach_transport(&qedf_fc_vport_transport_fn); 4100 if (!qedf_fc_vport_transport_template) { 4101 QEDF_ERR(NULL, "Could not register vport template with FC " 4102 "transport\n"); 4103 goto err3; 4104 } 4105 4106 qedf_io_wq = create_workqueue("qedf_io_wq"); 4107 if (!qedf_io_wq) { 4108 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n"); 4109 goto err4; 4110 } 4111 4112 qedf_cb_ops.get_login_failures = qedf_get_login_failures; 4113 4114 ret = pci_register_driver(&qedf_pci_driver); 4115 if (ret) { 4116 QEDF_ERR(NULL, "Failed to register driver\n"); 4117 goto err5; 4118 } 4119 4120 return 0; 4121 4122 err5: 4123 destroy_workqueue(qedf_io_wq); 4124 err4: 4125 fc_release_transport(qedf_fc_vport_transport_template); 4126 err3: 4127 fc_release_transport(qedf_fc_transport_template); 4128 err2: 4129 #ifdef CONFIG_DEBUG_FS 4130 qedf_dbg_exit(); 4131 #endif 4132 qed_put_fcoe_ops(); 4133 err1: 4134 return -EINVAL; 4135 } 4136 4137 static void __exit qedf_cleanup(void) 4138 { 4139 pci_unregister_driver(&qedf_pci_driver); 4140 4141 destroy_workqueue(qedf_io_wq); 4142 4143 fc_release_transport(qedf_fc_vport_transport_template); 4144 fc_release_transport(qedf_fc_transport_template); 4145 #ifdef CONFIG_DEBUG_FS 4146 qedf_dbg_exit(); 4147 #endif 4148 qed_put_fcoe_ops(); 4149 4150 kmem_cache_destroy(qedf_io_work_cache); 4151 } 4152 4153 MODULE_LICENSE("GPL"); 4154 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module"); 4155 MODULE_AUTHOR("QLogic Corporation"); 4156 MODULE_VERSION(QEDF_VERSION); 4157 module_init(qedf_init); 4158 module_exit(qedf_cleanup); 4159