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 = qedf_priv(sc_cmd)->io_req; 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 printk_ratelimited("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_groups = qedf_host_groups, 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 .cmd_size = sizeof(struct qedf_cmd_priv), 1000 }; 1001 1002 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen) 1003 { 1004 int rc; 1005 1006 spin_lock(&qedf_global_lock); 1007 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global); 1008 spin_unlock(&qedf_global_lock); 1009 1010 return rc; 1011 } 1012 1013 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id) 1014 { 1015 struct qedf_rport *fcport; 1016 struct fc_rport_priv *rdata; 1017 1018 rcu_read_lock(); 1019 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 1020 rdata = fcport->rdata; 1021 if (rdata == NULL) 1022 continue; 1023 if (rdata->ids.port_id == port_id) { 1024 rcu_read_unlock(); 1025 return fcport; 1026 } 1027 } 1028 rcu_read_unlock(); 1029 1030 /* Return NULL to caller to let them know fcport was not found */ 1031 return NULL; 1032 } 1033 1034 /* Transmits an ELS frame over an offloaded session */ 1035 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp) 1036 { 1037 struct fc_frame_header *fh; 1038 int rc = 0; 1039 1040 fh = fc_frame_header_get(fp); 1041 if ((fh->fh_type == FC_TYPE_ELS) && 1042 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 1043 switch (fc_frame_payload_op(fp)) { 1044 case ELS_ADISC: 1045 qedf_send_adisc(fcport, fp); 1046 rc = 1; 1047 break; 1048 } 1049 } 1050 1051 return rc; 1052 } 1053 1054 /* 1055 * qedf_xmit - qedf FCoE frame transmit function 1056 */ 1057 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp) 1058 { 1059 struct fc_lport *base_lport; 1060 struct qedf_ctx *qedf; 1061 struct ethhdr *eh; 1062 struct fcoe_crc_eof *cp; 1063 struct sk_buff *skb; 1064 struct fc_frame_header *fh; 1065 struct fcoe_hdr *hp; 1066 u8 sof, eof; 1067 u32 crc; 1068 unsigned int hlen, tlen, elen; 1069 int wlen; 1070 struct fc_stats *stats; 1071 struct fc_lport *tmp_lport; 1072 struct fc_lport *vn_port = NULL; 1073 struct qedf_rport *fcport; 1074 int rc; 1075 u16 vlan_tci = 0; 1076 1077 qedf = (struct qedf_ctx *)lport_priv(lport); 1078 1079 fh = fc_frame_header_get(fp); 1080 skb = fp_skb(fp); 1081 1082 /* Filter out traffic to other NPIV ports on the same host */ 1083 if (lport->vport) 1084 base_lport = shost_priv(vport_to_shost(lport->vport)); 1085 else 1086 base_lport = lport; 1087 1088 /* Flag if the destination is the base port */ 1089 if (base_lport->port_id == ntoh24(fh->fh_d_id)) { 1090 vn_port = base_lport; 1091 } else { 1092 /* Got through the list of vports attached to the base_lport 1093 * and see if we have a match with the destination address. 1094 */ 1095 list_for_each_entry(tmp_lport, &base_lport->vports, list) { 1096 if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) { 1097 vn_port = tmp_lport; 1098 break; 1099 } 1100 } 1101 } 1102 if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) { 1103 struct fc_rport_priv *rdata = NULL; 1104 1105 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 1106 "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id)); 1107 kfree_skb(skb); 1108 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id)); 1109 if (rdata) { 1110 rdata->retries = lport->max_rport_retry_count; 1111 kref_put(&rdata->kref, fc_rport_destroy); 1112 } 1113 return -EINVAL; 1114 } 1115 /* End NPIV filtering */ 1116 1117 if (!qedf->ctlr.sel_fcf) { 1118 kfree_skb(skb); 1119 return 0; 1120 } 1121 1122 if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) { 1123 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n"); 1124 kfree_skb(skb); 1125 return 0; 1126 } 1127 1128 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 1129 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n"); 1130 kfree_skb(skb); 1131 return 0; 1132 } 1133 1134 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 1135 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb)) 1136 return 0; 1137 } 1138 1139 /* Check to see if this needs to be sent on an offloaded session */ 1140 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 1141 1142 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1143 rc = qedf_xmit_l2_frame(fcport, fp); 1144 /* 1145 * If the frame was successfully sent over the middle path 1146 * then do not try to also send it over the LL2 path 1147 */ 1148 if (rc) 1149 return 0; 1150 } 1151 1152 sof = fr_sof(fp); 1153 eof = fr_eof(fp); 1154 1155 elen = sizeof(struct ethhdr); 1156 hlen = sizeof(struct fcoe_hdr); 1157 tlen = sizeof(struct fcoe_crc_eof); 1158 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; 1159 1160 skb->ip_summed = CHECKSUM_NONE; 1161 crc = fcoe_fc_crc(fp); 1162 1163 /* copy port crc and eof to the skb buff */ 1164 if (skb_is_nonlinear(skb)) { 1165 skb_frag_t *frag; 1166 1167 if (qedf_get_paged_crc_eof(skb, tlen)) { 1168 kfree_skb(skb); 1169 return -ENOMEM; 1170 } 1171 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; 1172 cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag); 1173 } else { 1174 cp = skb_put(skb, tlen); 1175 } 1176 1177 memset(cp, 0, sizeof(*cp)); 1178 cp->fcoe_eof = eof; 1179 cp->fcoe_crc32 = cpu_to_le32(~crc); 1180 if (skb_is_nonlinear(skb)) { 1181 kunmap_atomic(cp); 1182 cp = NULL; 1183 } 1184 1185 1186 /* adjust skb network/transport offsets to match mac/fcoe/port */ 1187 skb_push(skb, elen + hlen); 1188 skb_reset_mac_header(skb); 1189 skb_reset_network_header(skb); 1190 skb->mac_len = elen; 1191 skb->protocol = htons(ETH_P_FCOE); 1192 1193 /* 1194 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN 1195 * for FIP/FCoE traffic. 1196 */ 1197 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id); 1198 1199 /* fill up mac and fcoe headers */ 1200 eh = eth_hdr(skb); 1201 eh->h_proto = htons(ETH_P_FCOE); 1202 if (qedf->ctlr.map_dest) 1203 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); 1204 else 1205 /* insert GW address */ 1206 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr); 1207 1208 /* Set the source MAC address */ 1209 ether_addr_copy(eh->h_source, qedf->data_src_addr); 1210 1211 hp = (struct fcoe_hdr *)(eh + 1); 1212 memset(hp, 0, sizeof(*hp)); 1213 if (FC_FCOE_VER) 1214 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); 1215 hp->fcoe_sof = sof; 1216 1217 /*update tx stats */ 1218 stats = per_cpu_ptr(lport->stats, get_cpu()); 1219 stats->TxFrames++; 1220 stats->TxWords += wlen; 1221 put_cpu(); 1222 1223 /* Get VLAN ID from skb for printing purposes */ 1224 __vlan_hwaccel_get_tag(skb, &vlan_tci); 1225 1226 /* send down to lld */ 1227 fr_dev(fp) = lport; 1228 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: " 1229 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n", 1230 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type, 1231 vlan_tci); 1232 if (qedf_dump_frames) 1233 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 1234 1, skb->data, skb->len, false); 1235 rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0); 1236 if (rc) { 1237 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc); 1238 kfree_skb(skb); 1239 return rc; 1240 } 1241 1242 return 0; 1243 } 1244 1245 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1246 { 1247 int rval = 0; 1248 u32 *pbl; 1249 dma_addr_t page; 1250 int num_pages; 1251 1252 /* Calculate appropriate queue and PBL sizes */ 1253 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 1254 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE); 1255 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) * 1256 sizeof(void *); 1257 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE; 1258 1259 fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1260 &fcport->sq_dma, GFP_KERNEL); 1261 if (!fcport->sq) { 1262 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n"); 1263 rval = 1; 1264 goto out; 1265 } 1266 1267 fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 1268 fcport->sq_pbl_size, 1269 &fcport->sq_pbl_dma, GFP_KERNEL); 1270 if (!fcport->sq_pbl) { 1271 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n"); 1272 rval = 1; 1273 goto out_free_sq; 1274 } 1275 1276 /* Create PBL */ 1277 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE; 1278 page = fcport->sq_dma; 1279 pbl = (u32 *)fcport->sq_pbl; 1280 1281 while (num_pages--) { 1282 *pbl = U64_LO(page); 1283 pbl++; 1284 *pbl = U64_HI(page); 1285 pbl++; 1286 page += QEDF_PAGE_SIZE; 1287 } 1288 1289 return rval; 1290 1291 out_free_sq: 1292 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq, 1293 fcport->sq_dma); 1294 out: 1295 return rval; 1296 } 1297 1298 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1299 { 1300 if (fcport->sq_pbl) 1301 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size, 1302 fcport->sq_pbl, fcport->sq_pbl_dma); 1303 if (fcport->sq) 1304 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1305 fcport->sq, fcport->sq_dma); 1306 } 1307 1308 static int qedf_offload_connection(struct qedf_ctx *qedf, 1309 struct qedf_rport *fcport) 1310 { 1311 struct qed_fcoe_params_offload conn_info; 1312 u32 port_id; 1313 int rval; 1314 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe)); 1315 1316 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection " 1317 "portid=%06x.\n", fcport->rdata->ids.port_id); 1318 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle, 1319 &fcport->fw_cid, &fcport->p_doorbell); 1320 if (rval) { 1321 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection " 1322 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1323 rval = 1; /* For some reason qed returns 0 on failure here */ 1324 goto out; 1325 } 1326 1327 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x " 1328 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id, 1329 fcport->fw_cid, fcport->handle); 1330 1331 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload)); 1332 1333 /* Fill in the offload connection info */ 1334 conn_info.sq_pbl_addr = fcport->sq_pbl_dma; 1335 1336 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl); 1337 conn_info.sq_next_page_addr = 1338 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8)); 1339 1340 /* Need to use our FCoE MAC for the offload session */ 1341 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr); 1342 1343 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr); 1344 1345 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size; 1346 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov; 1347 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */ 1348 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size; 1349 1350 /* Set VLAN data */ 1351 conn_info.vlan_tag = qedf->vlan_id << 1352 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT; 1353 conn_info.vlan_tag |= 1354 qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT; 1355 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK << 1356 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT); 1357 1358 /* Set host port source id */ 1359 port_id = fc_host_port_id(qedf->lport->host); 1360 fcport->sid = port_id; 1361 conn_info.s_id.addr_hi = (port_id & 0x000000FF); 1362 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1363 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1364 1365 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq; 1366 1367 /* Set remote port destination id */ 1368 port_id = fcport->rdata->rport->port_id; 1369 conn_info.d_id.addr_hi = (port_id & 0x000000FF); 1370 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1371 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1372 1373 conn_info.def_q_idx = 0; /* Default index for send queue? */ 1374 1375 /* Set FC-TAPE specific flags if needed */ 1376 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) { 1377 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, 1378 "Enable CONF, REC for portid=%06x.\n", 1379 fcport->rdata->ids.port_id); 1380 conn_info.flags |= 1 << 1381 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT; 1382 conn_info.flags |= 1383 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) << 1384 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT; 1385 } 1386 1387 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info); 1388 if (rval) { 1389 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection " 1390 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1391 goto out_free_conn; 1392 } else 1393 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload " 1394 "succeeded portid=%06x total_sqe=%d.\n", 1395 fcport->rdata->ids.port_id, total_sqe); 1396 1397 spin_lock_init(&fcport->rport_lock); 1398 atomic_set(&fcport->free_sqes, total_sqe); 1399 return 0; 1400 out_free_conn: 1401 qed_ops->release_conn(qedf->cdev, fcport->handle); 1402 out: 1403 return rval; 1404 } 1405 1406 #define QEDF_TERM_BUFF_SIZE 10 1407 static void qedf_upload_connection(struct qedf_ctx *qedf, 1408 struct qedf_rport *fcport) 1409 { 1410 void *term_params; 1411 dma_addr_t term_params_dma; 1412 1413 /* Term params needs to be a DMA coherent buffer as qed shared the 1414 * physical DMA address with the firmware. The buffer may be used in 1415 * the receive path so we may eventually have to move this. 1416 */ 1417 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, 1418 &term_params_dma, GFP_KERNEL); 1419 if (!term_params) 1420 return; 1421 1422 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection " 1423 "port_id=%06x.\n", fcport->rdata->ids.port_id); 1424 1425 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma); 1426 qed_ops->release_conn(qedf->cdev, fcport->handle); 1427 1428 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params, 1429 term_params_dma); 1430 } 1431 1432 static void qedf_cleanup_fcport(struct qedf_ctx *qedf, 1433 struct qedf_rport *fcport) 1434 { 1435 struct fc_rport_priv *rdata = fcport->rdata; 1436 1437 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n", 1438 fcport->rdata->ids.port_id); 1439 1440 /* Flush any remaining i/o's before we upload the connection */ 1441 qedf_flush_active_ios(fcport, -1); 1442 1443 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) 1444 qedf_upload_connection(qedf, fcport); 1445 qedf_free_sq(qedf, fcport); 1446 fcport->rdata = NULL; 1447 fcport->qedf = NULL; 1448 kref_put(&rdata->kref, fc_rport_destroy); 1449 } 1450 1451 /* 1452 * This event_callback is called after successful completion of libfc 1453 * initiated target login. qedf can proceed with initiating the session 1454 * establishment. 1455 */ 1456 static void qedf_rport_event_handler(struct fc_lport *lport, 1457 struct fc_rport_priv *rdata, 1458 enum fc_rport_event event) 1459 { 1460 struct qedf_ctx *qedf = lport_priv(lport); 1461 struct fc_rport *rport = rdata->rport; 1462 struct fc_rport_libfc_priv *rp; 1463 struct qedf_rport *fcport; 1464 u32 port_id; 1465 int rval; 1466 unsigned long flags; 1467 1468 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, " 1469 "port_id = 0x%x\n", event, rdata->ids.port_id); 1470 1471 switch (event) { 1472 case RPORT_EV_READY: 1473 if (!rport) { 1474 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n"); 1475 break; 1476 } 1477 1478 rp = rport->dd_data; 1479 fcport = (struct qedf_rport *)&rp[1]; 1480 fcport->qedf = qedf; 1481 1482 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) { 1483 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading " 1484 "portid=0x%x as max number of offloaded sessions " 1485 "reached.\n", rdata->ids.port_id); 1486 return; 1487 } 1488 1489 /* 1490 * Don't try to offload the session again. Can happen when we 1491 * get an ADISC 1492 */ 1493 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1494 QEDF_WARN(&(qedf->dbg_ctx), "Session already " 1495 "offloaded, portid=0x%x.\n", 1496 rdata->ids.port_id); 1497 return; 1498 } 1499 1500 if (rport->port_id == FC_FID_DIR_SERV) { 1501 /* 1502 * qedf_rport structure doesn't exist for 1503 * directory server. 1504 * We should not come here, as lport will 1505 * take care of fabric login 1506 */ 1507 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not " 1508 "exist for dir server port_id=%x\n", 1509 rdata->ids.port_id); 1510 break; 1511 } 1512 1513 if (rdata->spp_type != FC_TYPE_FCP) { 1514 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1515 "Not offloading since spp type isn't FCP\n"); 1516 break; 1517 } 1518 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1519 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1520 "Not FCP target so not offloading\n"); 1521 break; 1522 } 1523 1524 /* Initial reference held on entry, so this can't fail */ 1525 kref_get(&rdata->kref); 1526 fcport->rdata = rdata; 1527 fcport->rport = rport; 1528 1529 rval = qedf_alloc_sq(qedf, fcport); 1530 if (rval) { 1531 qedf_cleanup_fcport(qedf, fcport); 1532 break; 1533 } 1534 1535 /* Set device type */ 1536 if (rdata->flags & FC_RP_FLAGS_RETRY && 1537 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET && 1538 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) { 1539 fcport->dev_type = QEDF_RPORT_TYPE_TAPE; 1540 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1541 "portid=%06x is a TAPE device.\n", 1542 rdata->ids.port_id); 1543 } else { 1544 fcport->dev_type = QEDF_RPORT_TYPE_DISK; 1545 } 1546 1547 rval = qedf_offload_connection(qedf, fcport); 1548 if (rval) { 1549 qedf_cleanup_fcport(qedf, fcport); 1550 break; 1551 } 1552 1553 /* Add fcport to list of qedf_ctx list of offloaded ports */ 1554 spin_lock_irqsave(&qedf->hba_lock, flags); 1555 list_add_rcu(&fcport->peers, &qedf->fcports); 1556 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1557 1558 /* 1559 * Set the session ready bit to let everyone know that this 1560 * connection is ready for I/O 1561 */ 1562 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags); 1563 atomic_inc(&qedf->num_offloads); 1564 1565 break; 1566 case RPORT_EV_LOGO: 1567 case RPORT_EV_FAILED: 1568 case RPORT_EV_STOP: 1569 port_id = rdata->ids.port_id; 1570 if (port_id == FC_FID_DIR_SERV) 1571 break; 1572 1573 if (rdata->spp_type != FC_TYPE_FCP) { 1574 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1575 "No action since spp type isn't FCP\n"); 1576 break; 1577 } 1578 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1579 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1580 "Not FCP target so no action\n"); 1581 break; 1582 } 1583 1584 if (!rport) { 1585 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1586 "port_id=%x - rport notcreated Yet!!\n", port_id); 1587 break; 1588 } 1589 rp = rport->dd_data; 1590 /* 1591 * Perform session upload. Note that rdata->peers is already 1592 * removed from disc->rports list before we get this event. 1593 */ 1594 fcport = (struct qedf_rport *)&rp[1]; 1595 1596 spin_lock_irqsave(&fcport->rport_lock, flags); 1597 /* Only free this fcport if it is offloaded already */ 1598 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) && 1599 !test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1600 &fcport->flags)) { 1601 set_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1602 &fcport->flags); 1603 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1604 qedf_cleanup_fcport(qedf, fcport); 1605 /* 1606 * Remove fcport to list of qedf_ctx list of offloaded 1607 * ports 1608 */ 1609 spin_lock_irqsave(&qedf->hba_lock, flags); 1610 list_del_rcu(&fcport->peers); 1611 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1612 1613 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1614 &fcport->flags); 1615 atomic_dec(&qedf->num_offloads); 1616 } else { 1617 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1618 } 1619 break; 1620 1621 case RPORT_EV_NONE: 1622 break; 1623 } 1624 } 1625 1626 static void qedf_abort_io(struct fc_lport *lport) 1627 { 1628 /* NO-OP but need to fill in the template */ 1629 } 1630 1631 static void qedf_fcp_cleanup(struct fc_lport *lport) 1632 { 1633 /* 1634 * NO-OP but need to fill in template to prevent a NULL 1635 * function pointer dereference during link down. I/Os 1636 * will be flushed when port is uploaded. 1637 */ 1638 } 1639 1640 static struct libfc_function_template qedf_lport_template = { 1641 .frame_send = qedf_xmit, 1642 .fcp_abort_io = qedf_abort_io, 1643 .fcp_cleanup = qedf_fcp_cleanup, 1644 .rport_event_callback = qedf_rport_event_handler, 1645 .elsct_send = qedf_elsct_send, 1646 }; 1647 1648 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf) 1649 { 1650 fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO); 1651 1652 qedf->ctlr.send = qedf_fip_send; 1653 qedf->ctlr.get_src_addr = qedf_get_src_mac; 1654 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac); 1655 } 1656 1657 static void qedf_setup_fdmi(struct qedf_ctx *qedf) 1658 { 1659 struct fc_lport *lport = qedf->lport; 1660 u8 buf[8]; 1661 int pos; 1662 uint32_t i; 1663 1664 /* 1665 * fdmi_enabled needs to be set for libfc 1666 * to execute FDMI registration 1667 */ 1668 lport->fdmi_enabled = 1; 1669 1670 /* 1671 * Setup the necessary fc_host attributes to that will be used to fill 1672 * in the FDMI information. 1673 */ 1674 1675 /* Get the PCI-e Device Serial Number Capability */ 1676 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN); 1677 if (pos) { 1678 pos += 4; 1679 for (i = 0; i < 8; i++) 1680 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]); 1681 1682 snprintf(fc_host_serial_number(lport->host), 1683 FC_SERIAL_NUMBER_SIZE, 1684 "%02X%02X%02X%02X%02X%02X%02X%02X", 1685 buf[7], buf[6], buf[5], buf[4], 1686 buf[3], buf[2], buf[1], buf[0]); 1687 } else 1688 snprintf(fc_host_serial_number(lport->host), 1689 FC_SERIAL_NUMBER_SIZE, "Unknown"); 1690 1691 snprintf(fc_host_manufacturer(lport->host), 1692 FC_SERIAL_NUMBER_SIZE, "%s", "Marvell Semiconductor Inc."); 1693 1694 if (qedf->pdev->device == QL45xxx) { 1695 snprintf(fc_host_model(lport->host), 1696 FC_SYMBOLIC_NAME_SIZE, "%s", "QL45xxx"); 1697 1698 snprintf(fc_host_model_description(lport->host), 1699 FC_SYMBOLIC_NAME_SIZE, "%s", 1700 "Marvell FastLinQ QL45xxx FCoE Adapter"); 1701 } 1702 1703 if (qedf->pdev->device == QL41xxx) { 1704 snprintf(fc_host_model(lport->host), 1705 FC_SYMBOLIC_NAME_SIZE, "%s", "QL41xxx"); 1706 1707 snprintf(fc_host_model_description(lport->host), 1708 FC_SYMBOLIC_NAME_SIZE, "%s", 1709 "Marvell FastLinQ QL41xxx FCoE Adapter"); 1710 } 1711 1712 snprintf(fc_host_hardware_version(lport->host), 1713 FC_VERSION_STRING_SIZE, "Rev %d", qedf->pdev->revision); 1714 1715 snprintf(fc_host_driver_version(lport->host), 1716 FC_VERSION_STRING_SIZE, "%s", QEDF_VERSION); 1717 1718 snprintf(fc_host_firmware_version(lport->host), 1719 FC_VERSION_STRING_SIZE, "%d.%d.%d.%d", 1720 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 1721 FW_ENGINEERING_VERSION); 1722 1723 snprintf(fc_host_vendor_identifier(lport->host), 1724 FC_VENDOR_IDENTIFIER, "%s", "Marvell"); 1725 1726 } 1727 1728 static int qedf_lport_setup(struct qedf_ctx *qedf) 1729 { 1730 struct fc_lport *lport = qedf->lport; 1731 1732 lport->link_up = 0; 1733 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1734 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1735 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1736 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1737 lport->boot_time = jiffies; 1738 lport->e_d_tov = 2 * 1000; 1739 lport->r_a_tov = 10 * 1000; 1740 1741 /* Set NPIV support */ 1742 lport->does_npiv = 1; 1743 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV; 1744 1745 fc_set_wwnn(lport, qedf->wwnn); 1746 fc_set_wwpn(lport, qedf->wwpn); 1747 1748 if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) { 1749 QEDF_ERR(&qedf->dbg_ctx, 1750 "fcoe_libfc_config failed.\n"); 1751 return -ENOMEM; 1752 } 1753 1754 /* Allocate the exchange manager */ 1755 fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS, 1756 0xfffe, NULL); 1757 1758 if (fc_lport_init_stats(lport)) 1759 return -ENOMEM; 1760 1761 /* Finish lport config */ 1762 fc_lport_config(lport); 1763 1764 /* Set max frame size */ 1765 fc_set_mfs(lport, QEDF_MFS); 1766 fc_host_maxframe_size(lport->host) = lport->mfs; 1767 1768 /* Set default dev_loss_tmo based on module parameter */ 1769 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo; 1770 1771 /* Set symbolic node name */ 1772 if (qedf->pdev->device == QL45xxx) 1773 snprintf(fc_host_symbolic_name(lport->host), 256, 1774 "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION); 1775 1776 if (qedf->pdev->device == QL41xxx) 1777 snprintf(fc_host_symbolic_name(lport->host), 256, 1778 "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION); 1779 1780 qedf_setup_fdmi(qedf); 1781 1782 return 0; 1783 } 1784 1785 /* 1786 * NPIV functions 1787 */ 1788 1789 static int qedf_vport_libfc_config(struct fc_vport *vport, 1790 struct fc_lport *lport) 1791 { 1792 lport->link_up = 0; 1793 lport->qfull = 0; 1794 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1795 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1796 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1797 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1798 lport->boot_time = jiffies; 1799 lport->e_d_tov = 2 * 1000; 1800 lport->r_a_tov = 10 * 1000; 1801 lport->does_npiv = 1; /* Temporary until we add NPIV support */ 1802 1803 /* Allocate stats for vport */ 1804 if (fc_lport_init_stats(lport)) 1805 return -ENOMEM; 1806 1807 /* Finish lport config */ 1808 fc_lport_config(lport); 1809 1810 /* offload related configuration */ 1811 lport->crc_offload = 0; 1812 lport->seq_offload = 0; 1813 lport->lro_enabled = 0; 1814 lport->lro_xid = 0; 1815 lport->lso_max = 0; 1816 1817 return 0; 1818 } 1819 1820 static int qedf_vport_create(struct fc_vport *vport, bool disabled) 1821 { 1822 struct Scsi_Host *shost = vport_to_shost(vport); 1823 struct fc_lport *n_port = shost_priv(shost); 1824 struct fc_lport *vn_port; 1825 struct qedf_ctx *base_qedf = lport_priv(n_port); 1826 struct qedf_ctx *vport_qedf; 1827 1828 char buf[32]; 1829 int rc = 0; 1830 1831 rc = fcoe_validate_vport_create(vport); 1832 if (rc) { 1833 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1834 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, " 1835 "WWPN (0x%s) already exists.\n", buf); 1836 return rc; 1837 } 1838 1839 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) { 1840 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport " 1841 "because link is not up.\n"); 1842 return -EIO; 1843 } 1844 1845 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx)); 1846 if (!vn_port) { 1847 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport " 1848 "for vport.\n"); 1849 return -ENOMEM; 1850 } 1851 1852 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1853 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n", 1854 buf); 1855 1856 /* Copy some fields from base_qedf */ 1857 vport_qedf = lport_priv(vn_port); 1858 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx)); 1859 1860 /* Set qedf data specific to this vport */ 1861 vport_qedf->lport = vn_port; 1862 /* Use same hba_lock as base_qedf */ 1863 vport_qedf->hba_lock = base_qedf->hba_lock; 1864 vport_qedf->pdev = base_qedf->pdev; 1865 vport_qedf->cmd_mgr = base_qedf->cmd_mgr; 1866 init_completion(&vport_qedf->flogi_compl); 1867 INIT_LIST_HEAD(&vport_qedf->fcports); 1868 INIT_DELAYED_WORK(&vport_qedf->stag_work, qedf_stag_change_work); 1869 1870 rc = qedf_vport_libfc_config(vport, vn_port); 1871 if (rc) { 1872 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory " 1873 "for lport stats.\n"); 1874 goto err; 1875 } 1876 1877 fc_set_wwnn(vn_port, vport->node_name); 1878 fc_set_wwpn(vn_port, vport->port_name); 1879 vport_qedf->wwnn = vn_port->wwnn; 1880 vport_qedf->wwpn = vn_port->wwpn; 1881 1882 vn_port->host->transportt = qedf_fc_vport_transport_template; 1883 vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS; 1884 vn_port->host->max_lun = qedf_max_lun; 1885 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD; 1886 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN; 1887 vn_port->host->max_id = QEDF_MAX_SESSIONS; 1888 1889 rc = scsi_add_host(vn_port->host, &vport->dev); 1890 if (rc) { 1891 QEDF_WARN(&base_qedf->dbg_ctx, 1892 "Error adding Scsi_Host rc=0x%x.\n", rc); 1893 goto err; 1894 } 1895 1896 /* Set default dev_loss_tmo based on module parameter */ 1897 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo; 1898 1899 /* Init libfc stuffs */ 1900 memcpy(&vn_port->tt, &qedf_lport_template, 1901 sizeof(qedf_lport_template)); 1902 fc_exch_init(vn_port); 1903 fc_elsct_init(vn_port); 1904 fc_lport_init(vn_port); 1905 fc_disc_init(vn_port); 1906 fc_disc_config(vn_port, vn_port); 1907 1908 1909 /* Allocate the exchange manager */ 1910 shost = vport_to_shost(vport); 1911 n_port = shost_priv(shost); 1912 fc_exch_mgr_list_clone(n_port, vn_port); 1913 1914 /* Set max frame size */ 1915 fc_set_mfs(vn_port, QEDF_MFS); 1916 1917 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN; 1918 1919 if (disabled) { 1920 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1921 } else { 1922 vn_port->boot_time = jiffies; 1923 fc_fabric_login(vn_port); 1924 fc_vport_setlink(vn_port); 1925 } 1926 1927 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n", 1928 vn_port); 1929 1930 /* Set up debug context for vport */ 1931 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no; 1932 vport_qedf->dbg_ctx.pdev = base_qedf->pdev; 1933 1934 return 0; 1935 1936 err: 1937 scsi_host_put(vn_port->host); 1938 return rc; 1939 } 1940 1941 static int qedf_vport_destroy(struct fc_vport *vport) 1942 { 1943 struct Scsi_Host *shost = vport_to_shost(vport); 1944 struct fc_lport *n_port = shost_priv(shost); 1945 struct fc_lport *vn_port = vport->dd_data; 1946 struct qedf_ctx *qedf = lport_priv(vn_port); 1947 1948 if (!qedf) { 1949 QEDF_ERR(NULL, "qedf is NULL.\n"); 1950 goto out; 1951 } 1952 1953 /* Set unloading bit on vport qedf_ctx to prevent more I/O */ 1954 set_bit(QEDF_UNLOADING, &qedf->flags); 1955 1956 mutex_lock(&n_port->lp_mutex); 1957 list_del(&vn_port->list); 1958 mutex_unlock(&n_port->lp_mutex); 1959 1960 fc_fabric_logoff(vn_port); 1961 fc_lport_destroy(vn_port); 1962 1963 /* Detach from scsi-ml */ 1964 fc_remove_host(vn_port->host); 1965 scsi_remove_host(vn_port->host); 1966 1967 /* 1968 * Only try to release the exchange manager if the vn_port 1969 * configuration is complete. 1970 */ 1971 if (vn_port->state == LPORT_ST_READY) 1972 fc_exch_mgr_free(vn_port); 1973 1974 /* Free memory used by statistical counters */ 1975 fc_lport_free_stats(vn_port); 1976 1977 /* Release Scsi_Host */ 1978 scsi_host_put(vn_port->host); 1979 1980 out: 1981 return 0; 1982 } 1983 1984 static int qedf_vport_disable(struct fc_vport *vport, bool disable) 1985 { 1986 struct fc_lport *lport = vport->dd_data; 1987 1988 if (disable) { 1989 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1990 fc_fabric_logoff(lport); 1991 } else { 1992 lport->boot_time = jiffies; 1993 fc_fabric_login(lport); 1994 fc_vport_setlink(lport); 1995 } 1996 return 0; 1997 } 1998 1999 /* 2000 * During removal we need to wait for all the vports associated with a port 2001 * to be destroyed so we avoid a race condition where libfc is still trying 2002 * to reap vports while the driver remove function has already reaped the 2003 * driver contexts associated with the physical port. 2004 */ 2005 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf) 2006 { 2007 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host); 2008 2009 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 2010 "Entered.\n"); 2011 while (fc_host->npiv_vports_inuse > 0) { 2012 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 2013 "Waiting for all vports to be reaped.\n"); 2014 msleep(1000); 2015 } 2016 } 2017 2018 /** 2019 * qedf_fcoe_reset - Resets the fcoe 2020 * 2021 * @shost: shost the reset is from 2022 * 2023 * Returns: always 0 2024 */ 2025 static int qedf_fcoe_reset(struct Scsi_Host *shost) 2026 { 2027 struct fc_lport *lport = shost_priv(shost); 2028 2029 qedf_ctx_soft_reset(lport); 2030 return 0; 2031 } 2032 2033 static void qedf_get_host_port_id(struct Scsi_Host *shost) 2034 { 2035 struct fc_lport *lport = shost_priv(shost); 2036 2037 fc_host_port_id(shost) = lport->port_id; 2038 } 2039 2040 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host 2041 *shost) 2042 { 2043 struct fc_host_statistics *qedf_stats; 2044 struct fc_lport *lport = shost_priv(shost); 2045 struct qedf_ctx *qedf = lport_priv(lport); 2046 struct qed_fcoe_stats *fw_fcoe_stats; 2047 2048 qedf_stats = fc_get_host_stats(shost); 2049 2050 /* We don't collect offload stats for specific NPIV ports */ 2051 if (lport->vport) 2052 goto out; 2053 2054 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL); 2055 if (!fw_fcoe_stats) { 2056 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for " 2057 "fw_fcoe_stats.\n"); 2058 goto out; 2059 } 2060 2061 mutex_lock(&qedf->stats_mutex); 2062 2063 /* Query firmware for offload stats */ 2064 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats); 2065 2066 /* 2067 * The expectation is that we add our offload stats to the stats 2068 * being maintained by libfc each time the fc_get_host_status callback 2069 * is invoked. The additions are not carried over for each call to 2070 * the fc_get_host_stats callback. 2071 */ 2072 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt + 2073 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt + 2074 fw_fcoe_stats->fcoe_tx_other_pkt_cnt; 2075 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt + 2076 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt + 2077 fw_fcoe_stats->fcoe_rx_other_pkt_cnt; 2078 qedf_stats->fcp_input_megabytes += 2079 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000); 2080 qedf_stats->fcp_output_megabytes += 2081 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000); 2082 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4; 2083 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4; 2084 qedf_stats->invalid_crc_count += 2085 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt; 2086 qedf_stats->dumped_frames = 2087 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 2088 qedf_stats->error_frames += 2089 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 2090 qedf_stats->fcp_input_requests += qedf->input_requests; 2091 qedf_stats->fcp_output_requests += qedf->output_requests; 2092 qedf_stats->fcp_control_requests += qedf->control_requests; 2093 qedf_stats->fcp_packet_aborts += qedf->packet_aborts; 2094 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures; 2095 2096 mutex_unlock(&qedf->stats_mutex); 2097 kfree(fw_fcoe_stats); 2098 out: 2099 return qedf_stats; 2100 } 2101 2102 static struct fc_function_template qedf_fc_transport_fn = { 2103 .show_host_node_name = 1, 2104 .show_host_port_name = 1, 2105 .show_host_supported_classes = 1, 2106 .show_host_supported_fc4s = 1, 2107 .show_host_active_fc4s = 1, 2108 .show_host_maxframe_size = 1, 2109 2110 .get_host_port_id = qedf_get_host_port_id, 2111 .show_host_port_id = 1, 2112 .show_host_supported_speeds = 1, 2113 .get_host_speed = fc_get_host_speed, 2114 .show_host_speed = 1, 2115 .show_host_port_type = 1, 2116 .get_host_port_state = fc_get_host_port_state, 2117 .show_host_port_state = 1, 2118 .show_host_symbolic_name = 1, 2119 2120 /* 2121 * Tell FC transport to allocate enough space to store the backpointer 2122 * for the associate qedf_rport struct. 2123 */ 2124 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2125 sizeof(struct qedf_rport)), 2126 .show_rport_maxframe_size = 1, 2127 .show_rport_supported_classes = 1, 2128 .show_host_fabric_name = 1, 2129 .show_starget_node_name = 1, 2130 .show_starget_port_name = 1, 2131 .show_starget_port_id = 1, 2132 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2133 .show_rport_dev_loss_tmo = 1, 2134 .get_fc_host_stats = qedf_fc_get_host_stats, 2135 .issue_fc_host_lip = qedf_fcoe_reset, 2136 .vport_create = qedf_vport_create, 2137 .vport_delete = qedf_vport_destroy, 2138 .vport_disable = qedf_vport_disable, 2139 .bsg_request = fc_lport_bsg_request, 2140 }; 2141 2142 static struct fc_function_template qedf_fc_vport_transport_fn = { 2143 .show_host_node_name = 1, 2144 .show_host_port_name = 1, 2145 .show_host_supported_classes = 1, 2146 .show_host_supported_fc4s = 1, 2147 .show_host_active_fc4s = 1, 2148 .show_host_maxframe_size = 1, 2149 .show_host_port_id = 1, 2150 .show_host_supported_speeds = 1, 2151 .get_host_speed = fc_get_host_speed, 2152 .show_host_speed = 1, 2153 .show_host_port_type = 1, 2154 .get_host_port_state = fc_get_host_port_state, 2155 .show_host_port_state = 1, 2156 .show_host_symbolic_name = 1, 2157 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2158 sizeof(struct qedf_rport)), 2159 .show_rport_maxframe_size = 1, 2160 .show_rport_supported_classes = 1, 2161 .show_host_fabric_name = 1, 2162 .show_starget_node_name = 1, 2163 .show_starget_port_name = 1, 2164 .show_starget_port_id = 1, 2165 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2166 .show_rport_dev_loss_tmo = 1, 2167 .get_fc_host_stats = fc_get_host_stats, 2168 .issue_fc_host_lip = qedf_fcoe_reset, 2169 .bsg_request = fc_lport_bsg_request, 2170 }; 2171 2172 static bool qedf_fp_has_work(struct qedf_fastpath *fp) 2173 { 2174 struct qedf_ctx *qedf = fp->qedf; 2175 struct global_queue *que; 2176 struct qed_sb_info *sb_info = fp->sb_info; 2177 struct status_block *sb = sb_info->sb_virt; 2178 u16 prod_idx; 2179 2180 /* Get the pointer to the global CQ this completion is on */ 2181 que = qedf->global_queues[fp->sb_id]; 2182 2183 /* Be sure all responses have been written to PI */ 2184 rmb(); 2185 2186 /* Get the current firmware producer index */ 2187 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2188 2189 return (que->cq_prod_idx != prod_idx); 2190 } 2191 2192 /* 2193 * Interrupt handler code. 2194 */ 2195 2196 /* Process completion queue and copy CQE contents for deferred processesing 2197 * 2198 * Return true if we should wake the I/O thread, false if not. 2199 */ 2200 static bool qedf_process_completions(struct qedf_fastpath *fp) 2201 { 2202 struct qedf_ctx *qedf = fp->qedf; 2203 struct qed_sb_info *sb_info = fp->sb_info; 2204 struct status_block *sb = sb_info->sb_virt; 2205 struct global_queue *que; 2206 u16 prod_idx; 2207 struct fcoe_cqe *cqe; 2208 struct qedf_io_work *io_work; 2209 int num_handled = 0; 2210 unsigned int cpu; 2211 struct qedf_ioreq *io_req = NULL; 2212 u16 xid; 2213 u16 new_cqes; 2214 u32 comp_type; 2215 2216 /* Get the current firmware producer index */ 2217 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2218 2219 /* Get the pointer to the global CQ this completion is on */ 2220 que = qedf->global_queues[fp->sb_id]; 2221 2222 /* Calculate the amount of new elements since last processing */ 2223 new_cqes = (prod_idx >= que->cq_prod_idx) ? 2224 (prod_idx - que->cq_prod_idx) : 2225 0x10000 - que->cq_prod_idx + prod_idx; 2226 2227 /* Save producer index */ 2228 que->cq_prod_idx = prod_idx; 2229 2230 while (new_cqes) { 2231 fp->completions++; 2232 num_handled++; 2233 cqe = &que->cq[que->cq_cons_idx]; 2234 2235 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2236 FCOE_CQE_CQE_TYPE_MASK; 2237 2238 /* 2239 * Process unsolicited CQEs directly in the interrupt handler 2240 * sine we need the fastpath ID 2241 */ 2242 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) { 2243 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL, 2244 "Unsolicated CQE.\n"); 2245 qedf_process_unsol_compl(qedf, fp->sb_id, cqe); 2246 /* 2247 * Don't add a work list item. Increment consumer 2248 * consumer index and move on. 2249 */ 2250 goto inc_idx; 2251 } 2252 2253 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2254 io_req = &qedf->cmd_mgr->cmds[xid]; 2255 2256 /* 2257 * Figure out which percpu thread we should queue this I/O 2258 * on. 2259 */ 2260 if (!io_req) 2261 /* If there is not io_req assocated with this CQE 2262 * just queue it on CPU 0 2263 */ 2264 cpu = 0; 2265 else { 2266 cpu = io_req->cpu; 2267 io_req->int_cpu = smp_processor_id(); 2268 } 2269 2270 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC); 2271 if (!io_work) { 2272 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate " 2273 "work for I/O completion.\n"); 2274 continue; 2275 } 2276 memset(io_work, 0, sizeof(struct qedf_io_work)); 2277 2278 INIT_WORK(&io_work->work, qedf_fp_io_handler); 2279 2280 /* Copy contents of CQE for deferred processing */ 2281 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe)); 2282 2283 io_work->qedf = fp->qedf; 2284 io_work->fp = NULL; /* Only used for unsolicited frames */ 2285 2286 queue_work_on(cpu, qedf_io_wq, &io_work->work); 2287 2288 inc_idx: 2289 que->cq_cons_idx++; 2290 if (que->cq_cons_idx == fp->cq_num_entries) 2291 que->cq_cons_idx = 0; 2292 new_cqes--; 2293 } 2294 2295 return true; 2296 } 2297 2298 2299 /* MSI-X fastpath handler code */ 2300 static irqreturn_t qedf_msix_handler(int irq, void *dev_id) 2301 { 2302 struct qedf_fastpath *fp = dev_id; 2303 2304 if (!fp) { 2305 QEDF_ERR(NULL, "fp is null.\n"); 2306 return IRQ_HANDLED; 2307 } 2308 if (!fp->sb_info) { 2309 QEDF_ERR(NULL, "fp->sb_info in null."); 2310 return IRQ_HANDLED; 2311 } 2312 2313 /* 2314 * Disable interrupts for this status block while we process new 2315 * completions 2316 */ 2317 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/); 2318 2319 while (1) { 2320 qedf_process_completions(fp); 2321 2322 if (qedf_fp_has_work(fp) == 0) { 2323 /* Update the sb information */ 2324 qed_sb_update_sb_idx(fp->sb_info); 2325 2326 /* Check for more work */ 2327 rmb(); 2328 2329 if (qedf_fp_has_work(fp) == 0) { 2330 /* Re-enable interrupts */ 2331 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 2332 return IRQ_HANDLED; 2333 } 2334 } 2335 } 2336 2337 /* Do we ever want to break out of above loop? */ 2338 return IRQ_HANDLED; 2339 } 2340 2341 /* simd handler for MSI/INTa */ 2342 static void qedf_simd_int_handler(void *cookie) 2343 { 2344 /* Cookie is qedf_ctx struct */ 2345 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2346 2347 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf); 2348 } 2349 2350 #define QEDF_SIMD_HANDLER_NUM 0 2351 static void qedf_sync_free_irqs(struct qedf_ctx *qedf) 2352 { 2353 int i; 2354 u16 vector_idx = 0; 2355 u32 vector; 2356 2357 if (qedf->int_info.msix_cnt) { 2358 for (i = 0; i < qedf->int_info.used_cnt; i++) { 2359 vector_idx = i * qedf->dev_info.common.num_hwfns + 2360 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2361 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2362 "Freeing IRQ #%d vector_idx=%d.\n", 2363 i, vector_idx); 2364 vector = qedf->int_info.msix[vector_idx].vector; 2365 synchronize_irq(vector); 2366 irq_set_affinity_hint(vector, NULL); 2367 irq_set_affinity_notifier(vector, NULL); 2368 free_irq(vector, &qedf->fp_array[i]); 2369 } 2370 } else 2371 qed_ops->common->simd_handler_clean(qedf->cdev, 2372 QEDF_SIMD_HANDLER_NUM); 2373 2374 qedf->int_info.used_cnt = 0; 2375 qed_ops->common->set_fp_int(qedf->cdev, 0); 2376 } 2377 2378 static int qedf_request_msix_irq(struct qedf_ctx *qedf) 2379 { 2380 int i, rc, cpu; 2381 u16 vector_idx = 0; 2382 u32 vector; 2383 2384 cpu = cpumask_first(cpu_online_mask); 2385 for (i = 0; i < qedf->num_queues; i++) { 2386 vector_idx = i * qedf->dev_info.common.num_hwfns + 2387 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2388 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2389 "Requesting IRQ #%d vector_idx=%d.\n", 2390 i, vector_idx); 2391 vector = qedf->int_info.msix[vector_idx].vector; 2392 rc = request_irq(vector, qedf_msix_handler, 0, "qedf", 2393 &qedf->fp_array[i]); 2394 2395 if (rc) { 2396 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n"); 2397 qedf_sync_free_irqs(qedf); 2398 return rc; 2399 } 2400 2401 qedf->int_info.used_cnt++; 2402 rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu)); 2403 cpu = cpumask_next(cpu, cpu_online_mask); 2404 } 2405 2406 return 0; 2407 } 2408 2409 static int qedf_setup_int(struct qedf_ctx *qedf) 2410 { 2411 int rc = 0; 2412 2413 /* 2414 * Learn interrupt configuration 2415 */ 2416 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus()); 2417 if (rc <= 0) 2418 return 0; 2419 2420 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info); 2421 if (rc) 2422 return 0; 2423 2424 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = " 2425 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt, 2426 num_online_cpus()); 2427 2428 if (qedf->int_info.msix_cnt) 2429 return qedf_request_msix_irq(qedf); 2430 2431 qed_ops->common->simd_handler_config(qedf->cdev, &qedf, 2432 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler); 2433 qedf->int_info.used_cnt = 1; 2434 2435 QEDF_ERR(&qedf->dbg_ctx, 2436 "Cannot load driver due to a lack of MSI-X vectors.\n"); 2437 return -EINVAL; 2438 } 2439 2440 /* Main function for libfc frame reception */ 2441 static void qedf_recv_frame(struct qedf_ctx *qedf, 2442 struct sk_buff *skb) 2443 { 2444 u32 fr_len; 2445 struct fc_lport *lport; 2446 struct fc_frame_header *fh; 2447 struct fcoe_crc_eof crc_eof; 2448 struct fc_frame *fp; 2449 u8 *mac = NULL; 2450 u8 *dest_mac = NULL; 2451 struct fcoe_hdr *hp; 2452 struct qedf_rport *fcport; 2453 struct fc_lport *vn_port; 2454 u32 f_ctl; 2455 2456 lport = qedf->lport; 2457 if (lport == NULL || lport->state == LPORT_ST_DISABLED) { 2458 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n"); 2459 kfree_skb(skb); 2460 return; 2461 } 2462 2463 if (skb_is_nonlinear(skb)) 2464 skb_linearize(skb); 2465 mac = eth_hdr(skb)->h_source; 2466 dest_mac = eth_hdr(skb)->h_dest; 2467 2468 /* Pull the header */ 2469 hp = (struct fcoe_hdr *)skb->data; 2470 fh = (struct fc_frame_header *) skb_transport_header(skb); 2471 skb_pull(skb, sizeof(struct fcoe_hdr)); 2472 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 2473 2474 fp = (struct fc_frame *)skb; 2475 fc_frame_init(fp); 2476 fr_dev(fp) = lport; 2477 fr_sof(fp) = hp->fcoe_sof; 2478 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 2479 QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n"); 2480 kfree_skb(skb); 2481 return; 2482 } 2483 fr_eof(fp) = crc_eof.fcoe_eof; 2484 fr_crc(fp) = crc_eof.fcoe_crc32; 2485 if (pskb_trim(skb, fr_len)) { 2486 QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n"); 2487 kfree_skb(skb); 2488 return; 2489 } 2490 2491 fh = fc_frame_header_get(fp); 2492 2493 /* 2494 * Invalid frame filters. 2495 */ 2496 2497 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 2498 fh->fh_type == FC_TYPE_FCP) { 2499 /* Drop FCP data. We dont this in L2 path */ 2500 kfree_skb(skb); 2501 return; 2502 } 2503 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 2504 fh->fh_type == FC_TYPE_ELS) { 2505 switch (fc_frame_payload_op(fp)) { 2506 case ELS_LOGO: 2507 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 2508 /* drop non-FIP LOGO */ 2509 kfree_skb(skb); 2510 return; 2511 } 2512 break; 2513 } 2514 } 2515 2516 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 2517 /* Drop incoming ABTS */ 2518 kfree_skb(skb); 2519 return; 2520 } 2521 2522 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { 2523 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2524 "FC frame d_id mismatch with MAC %pM.\n", dest_mac); 2525 kfree_skb(skb); 2526 return; 2527 } 2528 2529 if (qedf->ctlr.state) { 2530 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) { 2531 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2532 "Wrong source address: mac:%pM dest_addr:%pM.\n", 2533 mac, qedf->ctlr.dest_addr); 2534 kfree_skb(skb); 2535 return; 2536 } 2537 } 2538 2539 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 2540 2541 /* 2542 * If the destination ID from the frame header does not match what we 2543 * have on record for lport and the search for a NPIV port came up 2544 * empty then this is not addressed to our port so simply drop it. 2545 */ 2546 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { 2547 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2548 "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n", 2549 lport->port_id, ntoh24(fh->fh_d_id)); 2550 kfree_skb(skb); 2551 return; 2552 } 2553 2554 f_ctl = ntoh24(fh->fh_f_ctl); 2555 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) && 2556 (f_ctl & FC_FC_EX_CTX)) { 2557 /* Drop incoming ABTS response that has both SEQ/EX CTX set */ 2558 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2559 "Dropping ABTS response as both SEQ/EX CTX set.\n"); 2560 kfree_skb(skb); 2561 return; 2562 } 2563 2564 /* 2565 * If a connection is uploading, drop incoming FCoE frames as there 2566 * is a small window where we could try to return a frame while libfc 2567 * is trying to clean things up. 2568 */ 2569 2570 /* Get fcport associated with d_id if it exists */ 2571 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 2572 2573 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 2574 &fcport->flags)) { 2575 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2576 "Connection uploading, dropping fp=%p.\n", fp); 2577 kfree_skb(skb); 2578 return; 2579 } 2580 2581 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: " 2582 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp, 2583 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, 2584 fh->fh_type); 2585 if (qedf_dump_frames) 2586 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 2587 1, skb->data, skb->len, false); 2588 fc_exch_recv(lport, fp); 2589 } 2590 2591 static void qedf_ll2_process_skb(struct work_struct *work) 2592 { 2593 struct qedf_skb_work *skb_work = 2594 container_of(work, struct qedf_skb_work, work); 2595 struct qedf_ctx *qedf = skb_work->qedf; 2596 struct sk_buff *skb = skb_work->skb; 2597 struct ethhdr *eh; 2598 2599 if (!qedf) { 2600 QEDF_ERR(NULL, "qedf is NULL\n"); 2601 goto err_out; 2602 } 2603 2604 eh = (struct ethhdr *)skb->data; 2605 2606 /* Undo VLAN encapsulation */ 2607 if (eh->h_proto == htons(ETH_P_8021Q)) { 2608 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); 2609 eh = skb_pull(skb, VLAN_HLEN); 2610 skb_reset_mac_header(skb); 2611 } 2612 2613 /* 2614 * Process either a FIP frame or FCoE frame based on the 2615 * protocol value. If it's not either just drop the 2616 * frame. 2617 */ 2618 if (eh->h_proto == htons(ETH_P_FIP)) { 2619 qedf_fip_recv(qedf, skb); 2620 goto out; 2621 } else if (eh->h_proto == htons(ETH_P_FCOE)) { 2622 __skb_pull(skb, ETH_HLEN); 2623 qedf_recv_frame(qedf, skb); 2624 goto out; 2625 } else 2626 goto err_out; 2627 2628 err_out: 2629 kfree_skb(skb); 2630 out: 2631 kfree(skb_work); 2632 return; 2633 } 2634 2635 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb, 2636 u32 arg1, u32 arg2) 2637 { 2638 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2639 struct qedf_skb_work *skb_work; 2640 2641 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 2642 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2643 "Dropping frame as link state is down.\n"); 2644 kfree_skb(skb); 2645 return 0; 2646 } 2647 2648 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC); 2649 if (!skb_work) { 2650 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so " 2651 "dropping frame.\n"); 2652 kfree_skb(skb); 2653 return 0; 2654 } 2655 2656 INIT_WORK(&skb_work->work, qedf_ll2_process_skb); 2657 skb_work->skb = skb; 2658 skb_work->qedf = qedf; 2659 queue_work(qedf->ll2_recv_wq, &skb_work->work); 2660 2661 return 0; 2662 } 2663 2664 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = { 2665 .rx_cb = qedf_ll2_rx, 2666 .tx_cb = NULL, 2667 }; 2668 2669 /* Main thread to process I/O completions */ 2670 void qedf_fp_io_handler(struct work_struct *work) 2671 { 2672 struct qedf_io_work *io_work = 2673 container_of(work, struct qedf_io_work, work); 2674 u32 comp_type; 2675 2676 /* 2677 * Deferred part of unsolicited CQE sends 2678 * frame to libfc. 2679 */ 2680 comp_type = (io_work->cqe.cqe_data >> 2681 FCOE_CQE_CQE_TYPE_SHIFT) & 2682 FCOE_CQE_CQE_TYPE_MASK; 2683 if (comp_type == FCOE_UNSOLIC_CQE_TYPE && 2684 io_work->fp) 2685 fc_exch_recv(io_work->qedf->lport, io_work->fp); 2686 else 2687 qedf_process_cqe(io_work->qedf, &io_work->cqe); 2688 2689 kfree(io_work); 2690 } 2691 2692 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf, 2693 struct qed_sb_info *sb_info, u16 sb_id) 2694 { 2695 struct status_block *sb_virt; 2696 dma_addr_t sb_phys; 2697 int ret; 2698 2699 sb_virt = dma_alloc_coherent(&qedf->pdev->dev, 2700 sizeof(struct status_block), &sb_phys, GFP_KERNEL); 2701 2702 if (!sb_virt) { 2703 QEDF_ERR(&qedf->dbg_ctx, 2704 "Status block allocation failed for id = %d.\n", 2705 sb_id); 2706 return -ENOMEM; 2707 } 2708 2709 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys, 2710 sb_id, QED_SB_TYPE_STORAGE); 2711 2712 if (ret) { 2713 QEDF_ERR(&qedf->dbg_ctx, 2714 "Status block initialization failed (0x%x) for id = %d.\n", 2715 ret, sb_id); 2716 return ret; 2717 } 2718 2719 return 0; 2720 } 2721 2722 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info) 2723 { 2724 if (sb_info->sb_virt) 2725 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt), 2726 (void *)sb_info->sb_virt, sb_info->sb_phys); 2727 } 2728 2729 static void qedf_destroy_sb(struct qedf_ctx *qedf) 2730 { 2731 int id; 2732 struct qedf_fastpath *fp = NULL; 2733 2734 for (id = 0; id < qedf->num_queues; id++) { 2735 fp = &(qedf->fp_array[id]); 2736 if (fp->sb_id == QEDF_SB_ID_NULL) 2737 break; 2738 qedf_free_sb(qedf, fp->sb_info); 2739 kfree(fp->sb_info); 2740 } 2741 kfree(qedf->fp_array); 2742 } 2743 2744 static int qedf_prepare_sb(struct qedf_ctx *qedf) 2745 { 2746 int id; 2747 struct qedf_fastpath *fp; 2748 int ret; 2749 2750 qedf->fp_array = 2751 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath), 2752 GFP_KERNEL); 2753 2754 if (!qedf->fp_array) { 2755 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation " 2756 "failed.\n"); 2757 return -ENOMEM; 2758 } 2759 2760 for (id = 0; id < qedf->num_queues; id++) { 2761 fp = &(qedf->fp_array[id]); 2762 fp->sb_id = QEDF_SB_ID_NULL; 2763 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL); 2764 if (!fp->sb_info) { 2765 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct " 2766 "allocation failed.\n"); 2767 goto err; 2768 } 2769 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id); 2770 if (ret) { 2771 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and " 2772 "initialization failed.\n"); 2773 goto err; 2774 } 2775 fp->sb_id = id; 2776 fp->qedf = qedf; 2777 fp->cq_num_entries = 2778 qedf->global_queues[id]->cq_mem_size / 2779 sizeof(struct fcoe_cqe); 2780 } 2781 err: 2782 return 0; 2783 } 2784 2785 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe) 2786 { 2787 u16 xid; 2788 struct qedf_ioreq *io_req; 2789 struct qedf_rport *fcport; 2790 u32 comp_type; 2791 2792 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2793 FCOE_CQE_CQE_TYPE_MASK; 2794 2795 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2796 io_req = &qedf->cmd_mgr->cmds[xid]; 2797 2798 /* Completion not for a valid I/O anymore so just return */ 2799 if (!io_req) { 2800 QEDF_ERR(&qedf->dbg_ctx, 2801 "io_req is NULL for xid=0x%x.\n", xid); 2802 return; 2803 } 2804 2805 fcport = io_req->fcport; 2806 2807 if (fcport == NULL) { 2808 QEDF_ERR(&qedf->dbg_ctx, 2809 "fcport is NULL for xid=0x%x io_req=%p.\n", 2810 xid, io_req); 2811 return; 2812 } 2813 2814 /* 2815 * Check that fcport is offloaded. If it isn't then the spinlock 2816 * isn't valid and shouldn't be taken. We should just return. 2817 */ 2818 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 2819 QEDF_ERR(&qedf->dbg_ctx, 2820 "Session not offloaded yet, fcport = %p.\n", fcport); 2821 return; 2822 } 2823 2824 2825 switch (comp_type) { 2826 case FCOE_GOOD_COMPLETION_CQE_TYPE: 2827 atomic_inc(&fcport->free_sqes); 2828 switch (io_req->cmd_type) { 2829 case QEDF_SCSI_CMD: 2830 qedf_scsi_completion(qedf, cqe, io_req); 2831 break; 2832 case QEDF_ELS: 2833 qedf_process_els_compl(qedf, cqe, io_req); 2834 break; 2835 case QEDF_TASK_MGMT_CMD: 2836 qedf_process_tmf_compl(qedf, cqe, io_req); 2837 break; 2838 case QEDF_SEQ_CLEANUP: 2839 qedf_process_seq_cleanup_compl(qedf, cqe, io_req); 2840 break; 2841 } 2842 break; 2843 case FCOE_ERROR_DETECTION_CQE_TYPE: 2844 atomic_inc(&fcport->free_sqes); 2845 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2846 "Error detect CQE.\n"); 2847 qedf_process_error_detect(qedf, cqe, io_req); 2848 break; 2849 case FCOE_EXCH_CLEANUP_CQE_TYPE: 2850 atomic_inc(&fcport->free_sqes); 2851 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2852 "Cleanup CQE.\n"); 2853 qedf_process_cleanup_compl(qedf, cqe, io_req); 2854 break; 2855 case FCOE_ABTS_CQE_TYPE: 2856 atomic_inc(&fcport->free_sqes); 2857 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2858 "Abort CQE.\n"); 2859 qedf_process_abts_compl(qedf, cqe, io_req); 2860 break; 2861 case FCOE_DUMMY_CQE_TYPE: 2862 atomic_inc(&fcport->free_sqes); 2863 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2864 "Dummy CQE.\n"); 2865 break; 2866 case FCOE_LOCAL_COMP_CQE_TYPE: 2867 atomic_inc(&fcport->free_sqes); 2868 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2869 "Local completion CQE.\n"); 2870 break; 2871 case FCOE_WARNING_CQE_TYPE: 2872 atomic_inc(&fcport->free_sqes); 2873 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2874 "Warning CQE.\n"); 2875 qedf_process_warning_compl(qedf, cqe, io_req); 2876 break; 2877 case MAX_FCOE_CQE_TYPE: 2878 atomic_inc(&fcport->free_sqes); 2879 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2880 "Max FCoE CQE.\n"); 2881 break; 2882 default: 2883 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2884 "Default CQE.\n"); 2885 break; 2886 } 2887 } 2888 2889 static void qedf_free_bdq(struct qedf_ctx *qedf) 2890 { 2891 int i; 2892 2893 if (qedf->bdq_pbl_list) 2894 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE, 2895 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma); 2896 2897 if (qedf->bdq_pbl) 2898 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size, 2899 qedf->bdq_pbl, qedf->bdq_pbl_dma); 2900 2901 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2902 if (qedf->bdq[i].buf_addr) { 2903 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE, 2904 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma); 2905 } 2906 } 2907 } 2908 2909 static void qedf_free_global_queues(struct qedf_ctx *qedf) 2910 { 2911 int i; 2912 struct global_queue **gl = qedf->global_queues; 2913 2914 for (i = 0; i < qedf->num_queues; i++) { 2915 if (!gl[i]) 2916 continue; 2917 2918 if (gl[i]->cq) 2919 dma_free_coherent(&qedf->pdev->dev, 2920 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma); 2921 if (gl[i]->cq_pbl) 2922 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size, 2923 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 2924 2925 kfree(gl[i]); 2926 } 2927 2928 qedf_free_bdq(qedf); 2929 } 2930 2931 static int qedf_alloc_bdq(struct qedf_ctx *qedf) 2932 { 2933 int i; 2934 struct scsi_bd *pbl; 2935 u64 *list; 2936 dma_addr_t page; 2937 2938 /* Alloc dma memory for BDQ buffers */ 2939 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2940 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev, 2941 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL); 2942 if (!qedf->bdq[i].buf_addr) { 2943 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ " 2944 "buffer %d.\n", i); 2945 return -ENOMEM; 2946 } 2947 } 2948 2949 /* Alloc dma memory for BDQ page buffer list */ 2950 qedf->bdq_pbl_mem_size = 2951 QEDF_BDQ_SIZE * sizeof(struct scsi_bd); 2952 qedf->bdq_pbl_mem_size = 2953 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE); 2954 2955 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 2956 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL); 2957 if (!qedf->bdq_pbl) { 2958 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n"); 2959 return -ENOMEM; 2960 } 2961 2962 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2963 "BDQ PBL addr=0x%p dma=%pad\n", 2964 qedf->bdq_pbl, &qedf->bdq_pbl_dma); 2965 2966 /* 2967 * Populate BDQ PBL with physical and virtual address of individual 2968 * BDQ buffers 2969 */ 2970 pbl = (struct scsi_bd *)qedf->bdq_pbl; 2971 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2972 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma)); 2973 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma)); 2974 pbl->opaque.fcoe_opaque.hi = 0; 2975 /* Opaque lo data is an index into the BDQ array */ 2976 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i); 2977 pbl++; 2978 } 2979 2980 /* Allocate list of PBL pages */ 2981 qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev, 2982 QEDF_PAGE_SIZE, 2983 &qedf->bdq_pbl_list_dma, 2984 GFP_KERNEL); 2985 if (!qedf->bdq_pbl_list) { 2986 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n"); 2987 return -ENOMEM; 2988 } 2989 2990 /* 2991 * Now populate PBL list with pages that contain pointers to the 2992 * individual buffers. 2993 */ 2994 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size / 2995 QEDF_PAGE_SIZE; 2996 list = (u64 *)qedf->bdq_pbl_list; 2997 page = qedf->bdq_pbl_list_dma; 2998 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) { 2999 *list = qedf->bdq_pbl_dma; 3000 list++; 3001 page += QEDF_PAGE_SIZE; 3002 } 3003 3004 return 0; 3005 } 3006 3007 static int qedf_alloc_global_queues(struct qedf_ctx *qedf) 3008 { 3009 u32 *list; 3010 int i; 3011 int status; 3012 u32 *pbl; 3013 dma_addr_t page; 3014 int num_pages; 3015 3016 /* Allocate and map CQs, RQs */ 3017 /* 3018 * Number of global queues (CQ / RQ). This should 3019 * be <= number of available MSIX vectors for the PF 3020 */ 3021 if (!qedf->num_queues) { 3022 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n"); 3023 return -ENOMEM; 3024 } 3025 3026 /* 3027 * Make sure we allocated the PBL that will contain the physical 3028 * addresses of our queues 3029 */ 3030 if (!qedf->p_cpuq) { 3031 status = -EINVAL; 3032 QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n"); 3033 goto mem_alloc_failure; 3034 } 3035 3036 qedf->global_queues = kzalloc((sizeof(struct global_queue *) 3037 * qedf->num_queues), GFP_KERNEL); 3038 if (!qedf->global_queues) { 3039 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global " 3040 "queues array ptr memory\n"); 3041 return -ENOMEM; 3042 } 3043 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3044 "qedf->global_queues=%p.\n", qedf->global_queues); 3045 3046 /* Allocate DMA coherent buffers for BDQ */ 3047 status = qedf_alloc_bdq(qedf); 3048 if (status) { 3049 QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n"); 3050 goto mem_alloc_failure; 3051 } 3052 3053 /* Allocate a CQ and an associated PBL for each MSI-X vector */ 3054 for (i = 0; i < qedf->num_queues; i++) { 3055 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue), 3056 GFP_KERNEL); 3057 if (!qedf->global_queues[i]) { 3058 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate " 3059 "global queue %d.\n", i); 3060 status = -ENOMEM; 3061 goto mem_alloc_failure; 3062 } 3063 3064 qedf->global_queues[i]->cq_mem_size = 3065 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3066 qedf->global_queues[i]->cq_mem_size = 3067 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE); 3068 3069 qedf->global_queues[i]->cq_pbl_size = 3070 (qedf->global_queues[i]->cq_mem_size / 3071 PAGE_SIZE) * sizeof(void *); 3072 qedf->global_queues[i]->cq_pbl_size = 3073 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE); 3074 3075 qedf->global_queues[i]->cq = 3076 dma_alloc_coherent(&qedf->pdev->dev, 3077 qedf->global_queues[i]->cq_mem_size, 3078 &qedf->global_queues[i]->cq_dma, 3079 GFP_KERNEL); 3080 3081 if (!qedf->global_queues[i]->cq) { 3082 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n"); 3083 status = -ENOMEM; 3084 goto mem_alloc_failure; 3085 } 3086 3087 qedf->global_queues[i]->cq_pbl = 3088 dma_alloc_coherent(&qedf->pdev->dev, 3089 qedf->global_queues[i]->cq_pbl_size, 3090 &qedf->global_queues[i]->cq_pbl_dma, 3091 GFP_KERNEL); 3092 3093 if (!qedf->global_queues[i]->cq_pbl) { 3094 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n"); 3095 status = -ENOMEM; 3096 goto mem_alloc_failure; 3097 } 3098 3099 /* Create PBL */ 3100 num_pages = qedf->global_queues[i]->cq_mem_size / 3101 QEDF_PAGE_SIZE; 3102 page = qedf->global_queues[i]->cq_dma; 3103 pbl = (u32 *)qedf->global_queues[i]->cq_pbl; 3104 3105 while (num_pages--) { 3106 *pbl = U64_LO(page); 3107 pbl++; 3108 *pbl = U64_HI(page); 3109 pbl++; 3110 page += QEDF_PAGE_SIZE; 3111 } 3112 /* Set the initial consumer index for cq */ 3113 qedf->global_queues[i]->cq_cons_idx = 0; 3114 } 3115 3116 list = (u32 *)qedf->p_cpuq; 3117 3118 /* 3119 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 3120 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 3121 * to the physical address which contains an array of pointers to 3122 * the physical addresses of the specific queue pages. 3123 */ 3124 for (i = 0; i < qedf->num_queues; i++) { 3125 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma); 3126 list++; 3127 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma); 3128 list++; 3129 *list = U64_LO(0); 3130 list++; 3131 *list = U64_HI(0); 3132 list++; 3133 } 3134 3135 return 0; 3136 3137 mem_alloc_failure: 3138 qedf_free_global_queues(qedf); 3139 return status; 3140 } 3141 3142 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf) 3143 { 3144 u8 sq_num_pbl_pages; 3145 u32 sq_mem_size; 3146 u32 cq_mem_size; 3147 u32 cq_num_entries; 3148 int rval; 3149 3150 /* 3151 * The number of completion queues/fastpath interrupts/status blocks 3152 * we allocation is the minimum off: 3153 * 3154 * Number of CPUs 3155 * Number allocated by qed for our PCI function 3156 */ 3157 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf); 3158 3159 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n", 3160 qedf->num_queues); 3161 3162 qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev, 3163 qedf->num_queues * sizeof(struct qedf_glbl_q_params), 3164 &qedf->hw_p_cpuq, GFP_KERNEL); 3165 3166 if (!qedf->p_cpuq) { 3167 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n"); 3168 return 1; 3169 } 3170 3171 rval = qedf_alloc_global_queues(qedf); 3172 if (rval) { 3173 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation " 3174 "failed.\n"); 3175 return 1; 3176 } 3177 3178 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */ 3179 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 3180 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE); 3181 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE); 3182 3183 /* Calculate CQ num entries */ 3184 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3185 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE); 3186 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe); 3187 3188 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params)); 3189 3190 /* Setup the value for fcoe PF */ 3191 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS; 3192 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS; 3193 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr = 3194 (u64)qedf->hw_p_cpuq; 3195 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages; 3196 3197 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0; 3198 3199 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries; 3200 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues; 3201 3202 /* log_page_size: 12 for 4KB pages */ 3203 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE); 3204 3205 qedf->pf_params.fcoe_pf_params.mtu = 9000; 3206 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI; 3207 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI; 3208 3209 /* BDQ address and size */ 3210 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] = 3211 qedf->bdq_pbl_list_dma; 3212 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] = 3213 qedf->bdq_pbl_list_num_entries; 3214 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE; 3215 3216 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3217 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n", 3218 qedf->bdq_pbl_list, 3219 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0], 3220 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]); 3221 3222 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3223 "cq_num_entries=%d.\n", 3224 qedf->pf_params.fcoe_pf_params.cq_num_entries); 3225 3226 return 0; 3227 } 3228 3229 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 3230 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf) 3231 { 3232 size_t size = 0; 3233 3234 if (qedf->p_cpuq) { 3235 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params); 3236 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq, 3237 qedf->hw_p_cpuq); 3238 } 3239 3240 qedf_free_global_queues(qedf); 3241 3242 kfree(qedf->global_queues); 3243 } 3244 3245 /* 3246 * PCI driver functions 3247 */ 3248 3249 static const struct pci_device_id qedf_pci_tbl[] = { 3250 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) }, 3251 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) }, 3252 {0} 3253 }; 3254 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl); 3255 3256 static struct pci_driver qedf_pci_driver = { 3257 .name = QEDF_MODULE_NAME, 3258 .id_table = qedf_pci_tbl, 3259 .probe = qedf_probe, 3260 .remove = qedf_remove, 3261 .shutdown = qedf_shutdown, 3262 }; 3263 3264 static int __qedf_probe(struct pci_dev *pdev, int mode) 3265 { 3266 int rc = -EINVAL; 3267 struct fc_lport *lport; 3268 struct qedf_ctx *qedf = NULL; 3269 struct Scsi_Host *host; 3270 bool is_vf = false; 3271 struct qed_ll2_params params; 3272 char host_buf[20]; 3273 struct qed_link_params link_params; 3274 int status; 3275 void *task_start, *task_end; 3276 struct qed_slowpath_params slowpath_params; 3277 struct qed_probe_params qed_params; 3278 u16 retry_cnt = 10; 3279 3280 /* 3281 * When doing error recovery we didn't reap the lport so don't try 3282 * to reallocate it. 3283 */ 3284 retry_probe: 3285 if (mode == QEDF_MODE_RECOVERY) 3286 msleep(2000); 3287 3288 if (mode != QEDF_MODE_RECOVERY) { 3289 lport = libfc_host_alloc(&qedf_host_template, 3290 sizeof(struct qedf_ctx)); 3291 3292 if (!lport) { 3293 QEDF_ERR(NULL, "Could not allocate lport.\n"); 3294 rc = -ENOMEM; 3295 goto err0; 3296 } 3297 3298 fc_disc_init(lport); 3299 3300 /* Initialize qedf_ctx */ 3301 qedf = lport_priv(lport); 3302 set_bit(QEDF_PROBING, &qedf->flags); 3303 qedf->lport = lport; 3304 qedf->ctlr.lp = lport; 3305 qedf->pdev = pdev; 3306 qedf->dbg_ctx.pdev = pdev; 3307 qedf->dbg_ctx.host_no = lport->host->host_no; 3308 spin_lock_init(&qedf->hba_lock); 3309 INIT_LIST_HEAD(&qedf->fcports); 3310 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1; 3311 atomic_set(&qedf->num_offloads, 0); 3312 qedf->stop_io_on_error = false; 3313 pci_set_drvdata(pdev, qedf); 3314 init_completion(&qedf->fipvlan_compl); 3315 mutex_init(&qedf->stats_mutex); 3316 mutex_init(&qedf->flush_mutex); 3317 qedf->flogi_pending = 0; 3318 3319 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, 3320 "QLogic FastLinQ FCoE Module qedf %s, " 3321 "FW %d.%d.%d.%d\n", QEDF_VERSION, 3322 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 3323 FW_ENGINEERING_VERSION); 3324 } else { 3325 /* Init pointers during recovery */ 3326 qedf = pci_get_drvdata(pdev); 3327 set_bit(QEDF_PROBING, &qedf->flags); 3328 lport = qedf->lport; 3329 } 3330 3331 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n"); 3332 3333 host = lport->host; 3334 3335 /* Allocate mempool for qedf_io_work structs */ 3336 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN, 3337 qedf_io_work_cache); 3338 if (qedf->io_mempool == NULL) { 3339 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n"); 3340 goto err1; 3341 } 3342 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n", 3343 qedf->io_mempool); 3344 3345 sprintf(host_buf, "qedf_%u_link", 3346 qedf->lport->host->host_no); 3347 qedf->link_update_wq = create_workqueue(host_buf); 3348 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update); 3349 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery); 3350 INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump); 3351 INIT_DELAYED_WORK(&qedf->stag_work, qedf_stag_change_work); 3352 qedf->fipvlan_retries = qedf_fipvlan_retries; 3353 /* Set a default prio in case DCBX doesn't converge */ 3354 if (qedf_default_prio > -1) { 3355 /* 3356 * This is the case where we pass a modparam in so we want to 3357 * honor it even if dcbx doesn't converge. 3358 */ 3359 qedf->prio = qedf_default_prio; 3360 } else 3361 qedf->prio = QEDF_DEFAULT_PRIO; 3362 3363 /* 3364 * Common probe. Takes care of basic hardware init and pci_* 3365 * functions. 3366 */ 3367 memset(&qed_params, 0, sizeof(qed_params)); 3368 qed_params.protocol = QED_PROTOCOL_FCOE; 3369 qed_params.dp_module = qedf_dp_module; 3370 qed_params.dp_level = qedf_dp_level; 3371 qed_params.is_vf = is_vf; 3372 qedf->cdev = qed_ops->common->probe(pdev, &qed_params); 3373 if (!qedf->cdev) { 3374 if ((mode == QEDF_MODE_RECOVERY) && retry_cnt) { 3375 QEDF_ERR(&qedf->dbg_ctx, 3376 "Retry %d initialize hardware\n", retry_cnt); 3377 retry_cnt--; 3378 goto retry_probe; 3379 } 3380 QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n"); 3381 rc = -ENODEV; 3382 goto err1; 3383 } 3384 3385 /* Learn information crucial for qedf to progress */ 3386 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3387 if (rc) { 3388 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n"); 3389 goto err1; 3390 } 3391 3392 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 3393 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n", 3394 qedf->dev_info.common.num_hwfns, 3395 qed_ops->common->get_affin_hwfn_idx(qedf->cdev)); 3396 3397 /* queue allocation code should come here 3398 * order should be 3399 * slowpath_start 3400 * status block allocation 3401 * interrupt registration (to get min number of queues) 3402 * set_fcoe_pf_param 3403 * qed_sp_fcoe_func_start 3404 */ 3405 rc = qedf_set_fcoe_pf_param(qedf); 3406 if (rc) { 3407 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n"); 3408 goto err2; 3409 } 3410 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3411 3412 /* Learn information crucial for qedf to progress */ 3413 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3414 if (rc) { 3415 QEDF_ERR(&qedf->dbg_ctx, "Failed to fill dev info.\n"); 3416 goto err2; 3417 } 3418 3419 if (mode != QEDF_MODE_RECOVERY) { 3420 qedf->devlink = qed_ops->common->devlink_register(qedf->cdev); 3421 if (IS_ERR(qedf->devlink)) { 3422 QEDF_ERR(&qedf->dbg_ctx, "Cannot register devlink\n"); 3423 rc = PTR_ERR(qedf->devlink); 3424 qedf->devlink = NULL; 3425 goto err2; 3426 } 3427 } 3428 3429 /* Record BDQ producer doorbell addresses */ 3430 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr; 3431 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr; 3432 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3433 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod, 3434 qedf->bdq_secondary_prod); 3435 3436 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf); 3437 3438 rc = qedf_prepare_sb(qedf); 3439 if (rc) { 3440 3441 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3442 goto err2; 3443 } 3444 3445 /* Start the Slowpath-process */ 3446 slowpath_params.int_mode = QED_INT_MODE_MSIX; 3447 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER; 3448 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER; 3449 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER; 3450 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER; 3451 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE); 3452 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params); 3453 if (rc) { 3454 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3455 goto err2; 3456 } 3457 3458 /* 3459 * update_pf_params needs to be called before and after slowpath 3460 * start 3461 */ 3462 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3463 3464 /* Setup interrupts */ 3465 rc = qedf_setup_int(qedf); 3466 if (rc) { 3467 QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n"); 3468 goto err3; 3469 } 3470 3471 rc = qed_ops->start(qedf->cdev, &qedf->tasks); 3472 if (rc) { 3473 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n"); 3474 goto err4; 3475 } 3476 task_start = qedf_get_task_mem(&qedf->tasks, 0); 3477 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1); 3478 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, " 3479 "end=%p block_size=%u.\n", task_start, task_end, 3480 qedf->tasks.size); 3481 3482 /* 3483 * We need to write the number of BDs in the BDQ we've preallocated so 3484 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 3485 * packet arrives. 3486 */ 3487 qedf->bdq_prod_idx = QEDF_BDQ_SIZE; 3488 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3489 "Writing %d to primary and secondary BDQ doorbell registers.\n", 3490 qedf->bdq_prod_idx); 3491 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod); 3492 readw(qedf->bdq_primary_prod); 3493 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod); 3494 readw(qedf->bdq_secondary_prod); 3495 3496 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3497 3498 /* Now that the dev_info struct has been filled in set the MAC 3499 * address 3500 */ 3501 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac); 3502 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n", 3503 qedf->mac); 3504 3505 /* 3506 * Set the WWNN and WWPN in the following way: 3507 * 3508 * If the info we get from qed is non-zero then use that to set the 3509 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based 3510 * on the MAC address. 3511 */ 3512 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) { 3513 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3514 "Setting WWPN and WWNN from qed dev_info.\n"); 3515 qedf->wwnn = qedf->dev_info.wwnn; 3516 qedf->wwpn = qedf->dev_info.wwpn; 3517 } else { 3518 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3519 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n"); 3520 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0); 3521 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0); 3522 } 3523 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx " 3524 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn); 3525 3526 sprintf(host_buf, "host_%d", host->host_no); 3527 qed_ops->common->set_name(qedf->cdev, host_buf); 3528 3529 /* Allocate cmd mgr */ 3530 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf); 3531 if (!qedf->cmd_mgr) { 3532 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n"); 3533 rc = -ENOMEM; 3534 goto err5; 3535 } 3536 3537 if (mode != QEDF_MODE_RECOVERY) { 3538 host->transportt = qedf_fc_transport_template; 3539 host->max_lun = qedf_max_lun; 3540 host->max_cmd_len = QEDF_MAX_CDB_LEN; 3541 host->max_id = QEDF_MAX_SESSIONS; 3542 host->can_queue = FCOE_PARAMS_NUM_TASKS; 3543 rc = scsi_add_host(host, &pdev->dev); 3544 if (rc) { 3545 QEDF_WARN(&qedf->dbg_ctx, 3546 "Error adding Scsi_Host rc=0x%x.\n", rc); 3547 goto err6; 3548 } 3549 } 3550 3551 memset(¶ms, 0, sizeof(params)); 3552 params.mtu = QEDF_LL2_BUF_SIZE; 3553 ether_addr_copy(params.ll2_mac_address, qedf->mac); 3554 3555 /* Start LL2 processing thread */ 3556 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no); 3557 qedf->ll2_recv_wq = 3558 create_workqueue(host_buf); 3559 if (!qedf->ll2_recv_wq) { 3560 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n"); 3561 rc = -ENOMEM; 3562 goto err7; 3563 } 3564 3565 #ifdef CONFIG_DEBUG_FS 3566 qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops, 3567 qedf_dbg_fops); 3568 #endif 3569 3570 /* Start LL2 */ 3571 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf); 3572 rc = qed_ops->ll2->start(qedf->cdev, ¶ms); 3573 if (rc) { 3574 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n"); 3575 goto err7; 3576 } 3577 set_bit(QEDF_LL2_STARTED, &qedf->flags); 3578 3579 /* Set initial FIP/FCoE VLAN to NULL */ 3580 qedf->vlan_id = 0; 3581 3582 /* 3583 * No need to setup fcoe_ctlr or fc_lport objects during recovery since 3584 * they were not reaped during the unload process. 3585 */ 3586 if (mode != QEDF_MODE_RECOVERY) { 3587 /* Setup imbedded fcoe controller */ 3588 qedf_fcoe_ctlr_setup(qedf); 3589 3590 /* Setup lport */ 3591 rc = qedf_lport_setup(qedf); 3592 if (rc) { 3593 QEDF_ERR(&(qedf->dbg_ctx), 3594 "qedf_lport_setup failed.\n"); 3595 goto err7; 3596 } 3597 } 3598 3599 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no); 3600 qedf->timer_work_queue = 3601 create_workqueue(host_buf); 3602 if (!qedf->timer_work_queue) { 3603 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer " 3604 "workqueue.\n"); 3605 rc = -ENOMEM; 3606 goto err7; 3607 } 3608 3609 /* DPC workqueue is not reaped during recovery unload */ 3610 if (mode != QEDF_MODE_RECOVERY) { 3611 sprintf(host_buf, "qedf_%u_dpc", 3612 qedf->lport->host->host_no); 3613 qedf->dpc_wq = create_workqueue(host_buf); 3614 } 3615 INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler); 3616 3617 /* 3618 * GRC dump and sysfs parameters are not reaped during the recovery 3619 * unload process. 3620 */ 3621 if (mode != QEDF_MODE_RECOVERY) { 3622 qedf->grcdump_size = 3623 qed_ops->common->dbg_all_data_size(qedf->cdev); 3624 if (qedf->grcdump_size) { 3625 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump, 3626 qedf->grcdump_size); 3627 if (rc) { 3628 QEDF_ERR(&(qedf->dbg_ctx), 3629 "GRC Dump buffer alloc failed.\n"); 3630 qedf->grcdump = NULL; 3631 } 3632 3633 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3634 "grcdump: addr=%p, size=%u.\n", 3635 qedf->grcdump, qedf->grcdump_size); 3636 } 3637 qedf_create_sysfs_ctx_attr(qedf); 3638 3639 /* Initialize I/O tracing for this adapter */ 3640 spin_lock_init(&qedf->io_trace_lock); 3641 qedf->io_trace_idx = 0; 3642 } 3643 3644 init_completion(&qedf->flogi_compl); 3645 3646 status = qed_ops->common->update_drv_state(qedf->cdev, true); 3647 if (status) 3648 QEDF_ERR(&(qedf->dbg_ctx), 3649 "Failed to send drv state to MFW.\n"); 3650 3651 memset(&link_params, 0, sizeof(struct qed_link_params)); 3652 link_params.link_up = true; 3653 status = qed_ops->common->set_link(qedf->cdev, &link_params); 3654 if (status) 3655 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n"); 3656 3657 /* Start/restart discovery */ 3658 if (mode == QEDF_MODE_RECOVERY) 3659 fcoe_ctlr_link_up(&qedf->ctlr); 3660 else 3661 fc_fabric_login(lport); 3662 3663 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n"); 3664 3665 clear_bit(QEDF_PROBING, &qedf->flags); 3666 3667 /* All good */ 3668 return 0; 3669 3670 err7: 3671 if (qedf->ll2_recv_wq) 3672 destroy_workqueue(qedf->ll2_recv_wq); 3673 fc_remove_host(qedf->lport->host); 3674 scsi_remove_host(qedf->lport->host); 3675 #ifdef CONFIG_DEBUG_FS 3676 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3677 #endif 3678 err6: 3679 qedf_cmd_mgr_free(qedf->cmd_mgr); 3680 err5: 3681 qed_ops->stop(qedf->cdev); 3682 err4: 3683 qedf_free_fcoe_pf_param(qedf); 3684 qedf_sync_free_irqs(qedf); 3685 err3: 3686 qed_ops->common->slowpath_stop(qedf->cdev); 3687 err2: 3688 qed_ops->common->remove(qedf->cdev); 3689 err1: 3690 scsi_host_put(lport->host); 3691 err0: 3692 if (qedf) { 3693 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n"); 3694 3695 clear_bit(QEDF_PROBING, &qedf->flags); 3696 } 3697 return rc; 3698 } 3699 3700 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id) 3701 { 3702 return __qedf_probe(pdev, QEDF_MODE_NORMAL); 3703 } 3704 3705 static void __qedf_remove(struct pci_dev *pdev, int mode) 3706 { 3707 struct qedf_ctx *qedf; 3708 int rc; 3709 3710 if (!pdev) { 3711 QEDF_ERR(NULL, "pdev is NULL.\n"); 3712 return; 3713 } 3714 3715 qedf = pci_get_drvdata(pdev); 3716 3717 /* 3718 * Prevent race where we're in board disable work and then try to 3719 * rmmod the module. 3720 */ 3721 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 3722 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n"); 3723 return; 3724 } 3725 3726 if (mode != QEDF_MODE_RECOVERY) 3727 set_bit(QEDF_UNLOADING, &qedf->flags); 3728 3729 /* Logoff the fabric to upload all connections */ 3730 if (mode == QEDF_MODE_RECOVERY) 3731 fcoe_ctlr_link_down(&qedf->ctlr); 3732 else 3733 fc_fabric_logoff(qedf->lport); 3734 3735 if (!qedf_wait_for_upload(qedf)) 3736 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 3737 3738 #ifdef CONFIG_DEBUG_FS 3739 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3740 #endif 3741 3742 /* Stop any link update handling */ 3743 cancel_delayed_work_sync(&qedf->link_update); 3744 destroy_workqueue(qedf->link_update_wq); 3745 qedf->link_update_wq = NULL; 3746 3747 if (qedf->timer_work_queue) 3748 destroy_workqueue(qedf->timer_work_queue); 3749 3750 /* Stop Light L2 */ 3751 clear_bit(QEDF_LL2_STARTED, &qedf->flags); 3752 qed_ops->ll2->stop(qedf->cdev); 3753 if (qedf->ll2_recv_wq) 3754 destroy_workqueue(qedf->ll2_recv_wq); 3755 3756 /* Stop fastpath */ 3757 qedf_sync_free_irqs(qedf); 3758 qedf_destroy_sb(qedf); 3759 3760 /* 3761 * During recovery don't destroy OS constructs that represent the 3762 * physical port. 3763 */ 3764 if (mode != QEDF_MODE_RECOVERY) { 3765 qedf_free_grc_dump_buf(&qedf->grcdump); 3766 qedf_remove_sysfs_ctx_attr(qedf); 3767 3768 /* Remove all SCSI/libfc/libfcoe structures */ 3769 fcoe_ctlr_destroy(&qedf->ctlr); 3770 fc_lport_destroy(qedf->lport); 3771 fc_remove_host(qedf->lport->host); 3772 scsi_remove_host(qedf->lport->host); 3773 } 3774 3775 qedf_cmd_mgr_free(qedf->cmd_mgr); 3776 3777 if (mode != QEDF_MODE_RECOVERY) { 3778 fc_exch_mgr_free(qedf->lport); 3779 fc_lport_free_stats(qedf->lport); 3780 3781 /* Wait for all vports to be reaped */ 3782 qedf_wait_for_vport_destroy(qedf); 3783 } 3784 3785 /* 3786 * Now that all connections have been uploaded we can stop the 3787 * rest of the qed operations 3788 */ 3789 qed_ops->stop(qedf->cdev); 3790 3791 if (mode != QEDF_MODE_RECOVERY) { 3792 if (qedf->dpc_wq) { 3793 /* Stop general DPC handling */ 3794 destroy_workqueue(qedf->dpc_wq); 3795 qedf->dpc_wq = NULL; 3796 } 3797 } 3798 3799 /* Final shutdown for the board */ 3800 qedf_free_fcoe_pf_param(qedf); 3801 if (mode != QEDF_MODE_RECOVERY) { 3802 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3803 pci_set_drvdata(pdev, NULL); 3804 } 3805 3806 rc = qed_ops->common->update_drv_state(qedf->cdev, false); 3807 if (rc) 3808 QEDF_ERR(&(qedf->dbg_ctx), 3809 "Failed to send drv state to MFW.\n"); 3810 3811 if (mode != QEDF_MODE_RECOVERY && qedf->devlink) { 3812 qed_ops->common->devlink_unregister(qedf->devlink); 3813 qedf->devlink = NULL; 3814 } 3815 3816 qed_ops->common->slowpath_stop(qedf->cdev); 3817 qed_ops->common->remove(qedf->cdev); 3818 3819 mempool_destroy(qedf->io_mempool); 3820 3821 /* Only reap the Scsi_host on a real removal */ 3822 if (mode != QEDF_MODE_RECOVERY) 3823 scsi_host_put(qedf->lport->host); 3824 } 3825 3826 static void qedf_remove(struct pci_dev *pdev) 3827 { 3828 /* Check to make sure this function wasn't already disabled */ 3829 if (!atomic_read(&pdev->enable_cnt)) 3830 return; 3831 3832 __qedf_remove(pdev, QEDF_MODE_NORMAL); 3833 } 3834 3835 void qedf_wq_grcdump(struct work_struct *work) 3836 { 3837 struct qedf_ctx *qedf = 3838 container_of(work, struct qedf_ctx, grcdump_work.work); 3839 3840 QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n"); 3841 qedf_capture_grc_dump(qedf); 3842 } 3843 3844 void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type) 3845 { 3846 struct qedf_ctx *qedf = dev; 3847 3848 QEDF_ERR(&(qedf->dbg_ctx), 3849 "Hardware error handler scheduled, event=%d.\n", 3850 err_type); 3851 3852 if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) { 3853 QEDF_ERR(&(qedf->dbg_ctx), 3854 "Already in recovery, not scheduling board disable work.\n"); 3855 return; 3856 } 3857 3858 switch (err_type) { 3859 case QED_HW_ERR_FAN_FAIL: 3860 schedule_delayed_work(&qedf->board_disable_work, 0); 3861 break; 3862 case QED_HW_ERR_MFW_RESP_FAIL: 3863 case QED_HW_ERR_HW_ATTN: 3864 case QED_HW_ERR_DMAE_FAIL: 3865 case QED_HW_ERR_FW_ASSERT: 3866 /* Prevent HW attentions from being reasserted */ 3867 qed_ops->common->attn_clr_enable(qedf->cdev, true); 3868 break; 3869 case QED_HW_ERR_RAMROD_FAIL: 3870 /* Prevent HW attentions from being reasserted */ 3871 qed_ops->common->attn_clr_enable(qedf->cdev, true); 3872 3873 if (qedf_enable_recovery && qedf->devlink) 3874 qed_ops->common->report_fatal_error(qedf->devlink, 3875 err_type); 3876 3877 break; 3878 default: 3879 break; 3880 } 3881 } 3882 3883 /* 3884 * Protocol TLV handler 3885 */ 3886 void qedf_get_protocol_tlv_data(void *dev, void *data) 3887 { 3888 struct qedf_ctx *qedf = dev; 3889 struct qed_mfw_tlv_fcoe *fcoe = data; 3890 struct fc_lport *lport; 3891 struct Scsi_Host *host; 3892 struct fc_host_attrs *fc_host; 3893 struct fc_host_statistics *hst; 3894 3895 if (!qedf) { 3896 QEDF_ERR(NULL, "qedf is null.\n"); 3897 return; 3898 } 3899 3900 if (test_bit(QEDF_PROBING, &qedf->flags)) { 3901 QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n"); 3902 return; 3903 } 3904 3905 lport = qedf->lport; 3906 host = lport->host; 3907 fc_host = shost_to_fc_host(host); 3908 3909 /* Force a refresh of the fc_host stats including offload stats */ 3910 hst = qedf_fc_get_host_stats(host); 3911 3912 fcoe->qos_pri_set = true; 3913 fcoe->qos_pri = 3; /* Hard coded to 3 in driver */ 3914 3915 fcoe->ra_tov_set = true; 3916 fcoe->ra_tov = lport->r_a_tov; 3917 3918 fcoe->ed_tov_set = true; 3919 fcoe->ed_tov = lport->e_d_tov; 3920 3921 fcoe->npiv_state_set = true; 3922 fcoe->npiv_state = 1; /* NPIV always enabled */ 3923 3924 fcoe->num_npiv_ids_set = true; 3925 fcoe->num_npiv_ids = fc_host->npiv_vports_inuse; 3926 3927 /* Certain attributes we only want to set if we've selected an FCF */ 3928 if (qedf->ctlr.sel_fcf) { 3929 fcoe->switch_name_set = true; 3930 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name); 3931 } 3932 3933 fcoe->port_state_set = true; 3934 /* For qedf we're either link down or fabric attach */ 3935 if (lport->link_up) 3936 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC; 3937 else 3938 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE; 3939 3940 fcoe->link_failures_set = true; 3941 fcoe->link_failures = (u16)hst->link_failure_count; 3942 3943 fcoe->fcoe_txq_depth_set = true; 3944 fcoe->fcoe_rxq_depth_set = true; 3945 fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS; 3946 fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS; 3947 3948 fcoe->fcoe_rx_frames_set = true; 3949 fcoe->fcoe_rx_frames = hst->rx_frames; 3950 3951 fcoe->fcoe_tx_frames_set = true; 3952 fcoe->fcoe_tx_frames = hst->tx_frames; 3953 3954 fcoe->fcoe_rx_bytes_set = true; 3955 fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000; 3956 3957 fcoe->fcoe_tx_bytes_set = true; 3958 fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000; 3959 3960 fcoe->crc_count_set = true; 3961 fcoe->crc_count = hst->invalid_crc_count; 3962 3963 fcoe->tx_abts_set = true; 3964 fcoe->tx_abts = hst->fcp_packet_aborts; 3965 3966 fcoe->tx_lun_rst_set = true; 3967 fcoe->tx_lun_rst = qedf->lun_resets; 3968 3969 fcoe->abort_task_sets_set = true; 3970 fcoe->abort_task_sets = qedf->packet_aborts; 3971 3972 fcoe->scsi_busy_set = true; 3973 fcoe->scsi_busy = qedf->busy; 3974 3975 fcoe->scsi_tsk_full_set = true; 3976 fcoe->scsi_tsk_full = qedf->task_set_fulls; 3977 } 3978 3979 /* Deferred work function to perform soft context reset on STAG change */ 3980 void qedf_stag_change_work(struct work_struct *work) 3981 { 3982 struct qedf_ctx *qedf = 3983 container_of(work, struct qedf_ctx, stag_work.work); 3984 3985 printk_ratelimited("[%s]:[%s:%d]:%d: Performing software context reset.", 3986 dev_name(&qedf->pdev->dev), __func__, __LINE__, 3987 qedf->dbg_ctx.host_no); 3988 qedf_ctx_soft_reset(qedf->lport); 3989 } 3990 3991 static void qedf_shutdown(struct pci_dev *pdev) 3992 { 3993 __qedf_remove(pdev, QEDF_MODE_NORMAL); 3994 } 3995 3996 /* 3997 * Recovery handler code 3998 */ 3999 static void qedf_schedule_recovery_handler(void *dev) 4000 { 4001 struct qedf_ctx *qedf = dev; 4002 4003 QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n"); 4004 schedule_delayed_work(&qedf->recovery_work, 0); 4005 } 4006 4007 static void qedf_recovery_handler(struct work_struct *work) 4008 { 4009 struct qedf_ctx *qedf = 4010 container_of(work, struct qedf_ctx, recovery_work.work); 4011 4012 if (test_and_set_bit(QEDF_IN_RECOVERY, &qedf->flags)) 4013 return; 4014 4015 /* 4016 * Call common_ops->recovery_prolog to allow the MFW to quiesce 4017 * any PCI transactions. 4018 */ 4019 qed_ops->common->recovery_prolog(qedf->cdev); 4020 4021 QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n"); 4022 __qedf_remove(qedf->pdev, QEDF_MODE_RECOVERY); 4023 /* 4024 * Reset link and dcbx to down state since we will not get a link down 4025 * event from the MFW but calling __qedf_remove will essentially be a 4026 * link down event. 4027 */ 4028 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 4029 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 4030 __qedf_probe(qedf->pdev, QEDF_MODE_RECOVERY); 4031 clear_bit(QEDF_IN_RECOVERY, &qedf->flags); 4032 QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n"); 4033 } 4034 4035 /* Generic TLV data callback */ 4036 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 4037 { 4038 struct qedf_ctx *qedf; 4039 4040 if (!dev) { 4041 QEDF_INFO(NULL, QEDF_LOG_EVT, 4042 "dev is NULL so ignoring get_generic_tlv_data request.\n"); 4043 return; 4044 } 4045 qedf = (struct qedf_ctx *)dev; 4046 4047 memset(data, 0, sizeof(struct qed_generic_tlvs)); 4048 ether_addr_copy(data->mac[0], qedf->mac); 4049 } 4050 4051 /* 4052 * Module Init/Remove 4053 */ 4054 4055 static int __init qedf_init(void) 4056 { 4057 int ret; 4058 4059 /* If debug=1 passed, set the default log mask */ 4060 if (qedf_debug == QEDF_LOG_DEFAULT) 4061 qedf_debug = QEDF_DEFAULT_LOG_MASK; 4062 4063 /* 4064 * Check that default prio for FIP/FCoE traffic is between 0..7 if a 4065 * value has been set 4066 */ 4067 if (qedf_default_prio > -1) 4068 if (qedf_default_prio > 7) { 4069 qedf_default_prio = QEDF_DEFAULT_PRIO; 4070 QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n", 4071 QEDF_DEFAULT_PRIO); 4072 } 4073 4074 /* Print driver banner */ 4075 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR, 4076 QEDF_VERSION); 4077 4078 /* Create kmem_cache for qedf_io_work structs */ 4079 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache", 4080 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL); 4081 if (qedf_io_work_cache == NULL) { 4082 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n"); 4083 goto err1; 4084 } 4085 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n", 4086 qedf_io_work_cache); 4087 4088 qed_ops = qed_get_fcoe_ops(); 4089 if (!qed_ops) { 4090 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n"); 4091 goto err1; 4092 } 4093 4094 #ifdef CONFIG_DEBUG_FS 4095 qedf_dbg_init("qedf"); 4096 #endif 4097 4098 qedf_fc_transport_template = 4099 fc_attach_transport(&qedf_fc_transport_fn); 4100 if (!qedf_fc_transport_template) { 4101 QEDF_ERR(NULL, "Could not register with FC transport\n"); 4102 goto err2; 4103 } 4104 4105 qedf_fc_vport_transport_template = 4106 fc_attach_transport(&qedf_fc_vport_transport_fn); 4107 if (!qedf_fc_vport_transport_template) { 4108 QEDF_ERR(NULL, "Could not register vport template with FC " 4109 "transport\n"); 4110 goto err3; 4111 } 4112 4113 qedf_io_wq = create_workqueue("qedf_io_wq"); 4114 if (!qedf_io_wq) { 4115 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n"); 4116 goto err4; 4117 } 4118 4119 qedf_cb_ops.get_login_failures = qedf_get_login_failures; 4120 4121 ret = pci_register_driver(&qedf_pci_driver); 4122 if (ret) { 4123 QEDF_ERR(NULL, "Failed to register driver\n"); 4124 goto err5; 4125 } 4126 4127 return 0; 4128 4129 err5: 4130 destroy_workqueue(qedf_io_wq); 4131 err4: 4132 fc_release_transport(qedf_fc_vport_transport_template); 4133 err3: 4134 fc_release_transport(qedf_fc_transport_template); 4135 err2: 4136 #ifdef CONFIG_DEBUG_FS 4137 qedf_dbg_exit(); 4138 #endif 4139 qed_put_fcoe_ops(); 4140 err1: 4141 return -EINVAL; 4142 } 4143 4144 static void __exit qedf_cleanup(void) 4145 { 4146 pci_unregister_driver(&qedf_pci_driver); 4147 4148 destroy_workqueue(qedf_io_wq); 4149 4150 fc_release_transport(qedf_fc_vport_transport_template); 4151 fc_release_transport(qedf_fc_transport_template); 4152 #ifdef CONFIG_DEBUG_FS 4153 qedf_dbg_exit(); 4154 #endif 4155 qed_put_fcoe_ops(); 4156 4157 kmem_cache_destroy(qedf_io_work_cache); 4158 } 4159 4160 MODULE_LICENSE("GPL"); 4161 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module"); 4162 MODULE_AUTHOR("QLogic Corporation"); 4163 MODULE_VERSION(QEDF_VERSION); 4164 module_init(qedf_init); 4165 module_exit(qedf_cleanup); 4166