1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * QLogic FCoE Offload Driver 4 * Copyright (c) 2016-2018 Cavium Inc. 5 */ 6 #include <linux/init.h> 7 #include <linux/kernel.h> 8 #include <linux/module.h> 9 #include <linux/pci.h> 10 #include <linux/device.h> 11 #include <linux/highmem.h> 12 #include <linux/crc32.h> 13 #include <linux/interrupt.h> 14 #include <linux/list.h> 15 #include <linux/kthread.h> 16 #include <linux/phylink.h> 17 #include <scsi/libfc.h> 18 #include <scsi/scsi_host.h> 19 #include <scsi/fc_frame.h> 20 #include <linux/if_ether.h> 21 #include <linux/if_vlan.h> 22 #include <linux/cpu.h> 23 #include "qedf.h" 24 #include "qedf_dbg.h" 25 #include <uapi/linux/pci_regs.h> 26 27 const struct qed_fcoe_ops *qed_ops; 28 29 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id); 30 static void qedf_remove(struct pci_dev *pdev); 31 static void qedf_shutdown(struct pci_dev *pdev); 32 static void qedf_schedule_recovery_handler(void *dev); 33 static void qedf_recovery_handler(struct work_struct *work); 34 35 /* 36 * Driver module parameters. 37 */ 38 static unsigned int qedf_dev_loss_tmo = 60; 39 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO); 40 MODULE_PARM_DESC(dev_loss_tmo, " dev_loss_tmo setting for attached " 41 "remote ports (default 60)"); 42 43 uint qedf_debug = QEDF_LOG_INFO; 44 module_param_named(debug, qedf_debug, uint, S_IRUGO|S_IWUSR); 45 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging" 46 " mask"); 47 48 static uint qedf_fipvlan_retries = 60; 49 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO); 50 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt " 51 "before giving up (default 60)"); 52 53 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN; 54 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO); 55 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails " 56 "(default 1002)."); 57 58 static int qedf_default_prio = -1; 59 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO); 60 MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE" 61 " traffic (value between 0 and 7, default 3)."); 62 63 uint qedf_dump_frames; 64 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR); 65 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames " 66 "(default off)"); 67 68 static uint qedf_queue_depth; 69 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO); 70 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered " 71 "by the qedf driver. Default is 0 (use OS default)."); 72 73 uint qedf_io_tracing; 74 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR); 75 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions " 76 "into trace buffer. (default off)."); 77 78 static uint qedf_max_lun = MAX_FIBRE_LUNS; 79 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO); 80 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver " 81 "supports. (default 0xffffffff)"); 82 83 uint qedf_link_down_tmo; 84 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO); 85 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the " 86 "link is down by N seconds."); 87 88 bool qedf_retry_delay; 89 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR); 90 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry " 91 "delay handling (default off)."); 92 93 static bool qedf_dcbx_no_wait; 94 module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR); 95 MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start " 96 "sending FIP VLAN requests on link up (Default: off)."); 97 98 static uint qedf_dp_module; 99 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO); 100 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed " 101 "qed module during probe."); 102 103 static uint qedf_dp_level = QED_LEVEL_NOTICE; 104 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO); 105 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module " 106 "during probe (0-3: 0 more verbose)."); 107 108 static bool qedf_enable_recovery = true; 109 module_param_named(enable_recovery, qedf_enable_recovery, 110 bool, S_IRUGO | S_IWUSR); 111 MODULE_PARM_DESC(enable_recovery, "Enable/disable recovery on driver/firmware " 112 "interface level errors 0 = Disabled, 1 = Enabled (Default: 1)."); 113 114 struct workqueue_struct *qedf_io_wq; 115 116 static struct fcoe_percpu_s qedf_global; 117 static DEFINE_SPINLOCK(qedf_global_lock); 118 119 static struct kmem_cache *qedf_io_work_cache; 120 121 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id) 122 { 123 int vlan_id_tmp = 0; 124 125 vlan_id_tmp = vlan_id | (qedf->prio << VLAN_PRIO_SHIFT); 126 qedf->vlan_id = vlan_id_tmp; 127 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 128 "Setting vlan_id=0x%04x prio=%d.\n", 129 vlan_id_tmp, qedf->prio); 130 } 131 132 /* Returns true if we have a valid vlan, false otherwise */ 133 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf) 134 { 135 136 while (qedf->fipvlan_retries--) { 137 /* This is to catch if link goes down during fipvlan retries */ 138 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 139 QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n"); 140 return false; 141 } 142 143 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 144 QEDF_ERR(&qedf->dbg_ctx, "Driver unloading.\n"); 145 return false; 146 } 147 148 if (qedf->vlan_id > 0) { 149 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 150 "vlan = 0x%x already set, calling ctlr_link_up.\n", 151 qedf->vlan_id); 152 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) 153 fcoe_ctlr_link_up(&qedf->ctlr); 154 return true; 155 } 156 157 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 158 "Retry %d.\n", qedf->fipvlan_retries); 159 init_completion(&qedf->fipvlan_compl); 160 qedf_fcoe_send_vlan_req(qedf); 161 wait_for_completion_timeout(&qedf->fipvlan_compl, 1 * HZ); 162 } 163 164 return false; 165 } 166 167 static void qedf_handle_link_update(struct work_struct *work) 168 { 169 struct qedf_ctx *qedf = 170 container_of(work, struct qedf_ctx, link_update.work); 171 int rc; 172 173 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n", 174 atomic_read(&qedf->link_state)); 175 176 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 177 rc = qedf_initiate_fipvlan_req(qedf); 178 if (rc) 179 return; 180 181 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 182 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 183 "Link is down, resetting vlan_id.\n"); 184 qedf->vlan_id = 0; 185 return; 186 } 187 188 /* 189 * If we get here then we never received a repsonse to our 190 * fip vlan request so set the vlan_id to the default and 191 * tell FCoE that the link is up 192 */ 193 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN " 194 "response, falling back to default VLAN %d.\n", 195 qedf_fallback_vlan); 196 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 197 198 /* 199 * Zero out data_src_addr so we'll update it with the new 200 * lport port_id 201 */ 202 eth_zero_addr(qedf->data_src_addr); 203 fcoe_ctlr_link_up(&qedf->ctlr); 204 } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 205 /* 206 * If we hit here and link_down_tmo_valid is still 1 it means 207 * that link_down_tmo timed out so set it to 0 to make sure any 208 * other readers have accurate state. 209 */ 210 atomic_set(&qedf->link_down_tmo_valid, 0); 211 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 212 "Calling fcoe_ctlr_link_down().\n"); 213 fcoe_ctlr_link_down(&qedf->ctlr); 214 if (qedf_wait_for_upload(qedf) == false) 215 QEDF_ERR(&qedf->dbg_ctx, 216 "Could not upload all sessions.\n"); 217 /* Reset the number of FIP VLAN retries */ 218 qedf->fipvlan_retries = qedf_fipvlan_retries; 219 } 220 } 221 222 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1 223 #define QEDF_FCOE_MAC_METHOD_FCF_MAP 2 224 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3 225 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp) 226 { 227 u8 *granted_mac; 228 struct fc_frame_header *fh = fc_frame_header_get(fp); 229 u8 fc_map[3]; 230 int method = 0; 231 232 /* Get granted MAC address from FIP FLOGI payload */ 233 granted_mac = fr_cb(fp)->granted_mac; 234 235 /* 236 * We set the source MAC for FCoE traffic based on the Granted MAC 237 * address from the switch. 238 * 239 * If granted_mac is non-zero, we used that. 240 * If the granted_mac is zeroed out, created the FCoE MAC based on 241 * the sel_fcf->fc_map and the d_id fo the FLOGI frame. 242 * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the 243 * d_id of the FLOGI frame. 244 */ 245 if (!is_zero_ether_addr(granted_mac)) { 246 ether_addr_copy(qedf->data_src_addr, granted_mac); 247 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC; 248 } else if (qedf->ctlr.sel_fcf->fc_map != 0) { 249 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map); 250 qedf->data_src_addr[0] = fc_map[0]; 251 qedf->data_src_addr[1] = fc_map[1]; 252 qedf->data_src_addr[2] = fc_map[2]; 253 qedf->data_src_addr[3] = fh->fh_d_id[0]; 254 qedf->data_src_addr[4] = fh->fh_d_id[1]; 255 qedf->data_src_addr[5] = fh->fh_d_id[2]; 256 method = QEDF_FCOE_MAC_METHOD_FCF_MAP; 257 } else { 258 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id); 259 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC; 260 } 261 262 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 263 "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method); 264 } 265 266 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp, 267 void *arg) 268 { 269 struct fc_exch *exch = fc_seq_exch(seq); 270 struct fc_lport *lport = exch->lp; 271 struct qedf_ctx *qedf = lport_priv(lport); 272 273 if (!qedf) { 274 QEDF_ERR(NULL, "qedf is NULL.\n"); 275 return; 276 } 277 278 /* 279 * If ERR_PTR is set then don't try to stat anything as it will cause 280 * a crash when we access fp. 281 */ 282 if (IS_ERR(fp)) { 283 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 284 "fp has IS_ERR() set.\n"); 285 goto skip_stat; 286 } 287 288 /* Log stats for FLOGI reject */ 289 if (fc_frame_payload_op(fp) == ELS_LS_RJT) 290 qedf->flogi_failed++; 291 else if (fc_frame_payload_op(fp) == ELS_LS_ACC) { 292 /* Set the source MAC we will use for FCoE traffic */ 293 qedf_set_data_src_addr(qedf, fp); 294 qedf->flogi_pending = 0; 295 } 296 297 /* Complete flogi_compl so we can proceed to sending ADISCs */ 298 complete(&qedf->flogi_compl); 299 300 skip_stat: 301 /* Report response to libfc */ 302 fc_lport_flogi_resp(seq, fp, lport); 303 } 304 305 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did, 306 struct fc_frame *fp, unsigned int op, 307 void (*resp)(struct fc_seq *, 308 struct fc_frame *, 309 void *), 310 void *arg, u32 timeout) 311 { 312 struct qedf_ctx *qedf = lport_priv(lport); 313 314 /* 315 * Intercept FLOGI for statistic purposes. Note we use the resp 316 * callback to tell if this is really a flogi. 317 */ 318 if (resp == fc_lport_flogi_resp) { 319 qedf->flogi_cnt++; 320 if (qedf->flogi_pending >= QEDF_FLOGI_RETRY_CNT) { 321 schedule_delayed_work(&qedf->stag_work, 2); 322 return NULL; 323 } 324 qedf->flogi_pending++; 325 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp, 326 arg, timeout); 327 } 328 329 return fc_elsct_send(lport, did, fp, op, resp, arg, timeout); 330 } 331 332 int qedf_send_flogi(struct qedf_ctx *qedf) 333 { 334 struct fc_lport *lport; 335 struct fc_frame *fp; 336 337 lport = qedf->lport; 338 339 if (!lport->tt.elsct_send) { 340 QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n"); 341 return -EINVAL; 342 } 343 344 fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); 345 if (!fp) { 346 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n"); 347 return -ENOMEM; 348 } 349 350 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 351 "Sending FLOGI to reestablish session with switch.\n"); 352 lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, 353 ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov); 354 355 init_completion(&qedf->flogi_compl); 356 357 return 0; 358 } 359 360 /* 361 * This function is called if link_down_tmo is in use. If we get a link up and 362 * link_down_tmo has not expired then use just FLOGI/ADISC to recover our 363 * sessions with targets. Otherwise, just call fcoe_ctlr_link_up(). 364 */ 365 static void qedf_link_recovery(struct work_struct *work) 366 { 367 struct qedf_ctx *qedf = 368 container_of(work, struct qedf_ctx, link_recovery.work); 369 struct fc_lport *lport = qedf->lport; 370 struct fc_rport_priv *rdata; 371 bool rc; 372 int retries = 30; 373 int rval, i; 374 struct list_head rdata_login_list; 375 376 INIT_LIST_HEAD(&rdata_login_list); 377 378 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 379 "Link down tmo did not expire.\n"); 380 381 /* 382 * Essentially reset the fcoe_ctlr here without affecting the state 383 * of the libfc structs. 384 */ 385 qedf->ctlr.state = FIP_ST_LINK_WAIT; 386 fcoe_ctlr_link_down(&qedf->ctlr); 387 388 /* 389 * Bring the link up before we send the fipvlan request so libfcoe 390 * can select a new fcf in parallel 391 */ 392 fcoe_ctlr_link_up(&qedf->ctlr); 393 394 /* Since the link when down and up to verify which vlan we're on */ 395 qedf->fipvlan_retries = qedf_fipvlan_retries; 396 rc = qedf_initiate_fipvlan_req(qedf); 397 /* If getting the VLAN fails, set the VLAN to the fallback one */ 398 if (!rc) 399 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 400 401 /* 402 * We need to wait for an FCF to be selected due to the 403 * fcoe_ctlr_link_up other the FLOGI will be rejected. 404 */ 405 while (retries > 0) { 406 if (qedf->ctlr.sel_fcf) { 407 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 408 "FCF reselected, proceeding with FLOGI.\n"); 409 break; 410 } 411 msleep(500); 412 retries--; 413 } 414 415 if (retries < 1) { 416 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for " 417 "FCF selection.\n"); 418 return; 419 } 420 421 rval = qedf_send_flogi(qedf); 422 if (rval) 423 return; 424 425 /* Wait for FLOGI completion before proceeding with sending ADISCs */ 426 i = wait_for_completion_timeout(&qedf->flogi_compl, 427 qedf->lport->r_a_tov); 428 if (i == 0) { 429 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n"); 430 return; 431 } 432 433 /* 434 * Call lport->tt.rport_login which will cause libfc to send an 435 * ADISC since the rport is in state ready. 436 */ 437 mutex_lock(&lport->disc.disc_mutex); 438 list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) { 439 if (kref_get_unless_zero(&rdata->kref)) { 440 fc_rport_login(rdata); 441 kref_put(&rdata->kref, fc_rport_destroy); 442 } 443 } 444 mutex_unlock(&lport->disc.disc_mutex); 445 } 446 447 static void qedf_update_link_speed(struct qedf_ctx *qedf, 448 struct qed_link_output *link) 449 { 450 __ETHTOOL_DECLARE_LINK_MODE_MASK(sup_caps); 451 struct fc_lport *lport = qedf->lport; 452 453 lport->link_speed = FC_PORTSPEED_UNKNOWN; 454 lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN; 455 456 /* Set fc_host link speed */ 457 switch (link->speed) { 458 case 10000: 459 lport->link_speed = FC_PORTSPEED_10GBIT; 460 break; 461 case 25000: 462 lport->link_speed = FC_PORTSPEED_25GBIT; 463 break; 464 case 40000: 465 lport->link_speed = FC_PORTSPEED_40GBIT; 466 break; 467 case 50000: 468 lport->link_speed = FC_PORTSPEED_50GBIT; 469 break; 470 case 100000: 471 lport->link_speed = FC_PORTSPEED_100GBIT; 472 break; 473 case 20000: 474 lport->link_speed = FC_PORTSPEED_20GBIT; 475 break; 476 default: 477 lport->link_speed = FC_PORTSPEED_UNKNOWN; 478 break; 479 } 480 481 /* 482 * Set supported link speed by querying the supported 483 * capabilities of the link. 484 */ 485 486 phylink_zero(sup_caps); 487 phylink_set(sup_caps, 10000baseT_Full); 488 phylink_set(sup_caps, 10000baseKX4_Full); 489 phylink_set(sup_caps, 10000baseR_FEC); 490 phylink_set(sup_caps, 10000baseCR_Full); 491 phylink_set(sup_caps, 10000baseSR_Full); 492 phylink_set(sup_caps, 10000baseLR_Full); 493 phylink_set(sup_caps, 10000baseLRM_Full); 494 phylink_set(sup_caps, 10000baseKR_Full); 495 496 if (linkmode_intersects(link->supported_caps, sup_caps)) 497 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT; 498 499 phylink_zero(sup_caps); 500 phylink_set(sup_caps, 25000baseKR_Full); 501 phylink_set(sup_caps, 25000baseCR_Full); 502 phylink_set(sup_caps, 25000baseSR_Full); 503 504 if (linkmode_intersects(link->supported_caps, sup_caps)) 505 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT; 506 507 phylink_zero(sup_caps); 508 phylink_set(sup_caps, 40000baseLR4_Full); 509 phylink_set(sup_caps, 40000baseKR4_Full); 510 phylink_set(sup_caps, 40000baseCR4_Full); 511 phylink_set(sup_caps, 40000baseSR4_Full); 512 513 if (linkmode_intersects(link->supported_caps, sup_caps)) 514 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT; 515 516 phylink_zero(sup_caps); 517 phylink_set(sup_caps, 50000baseKR2_Full); 518 phylink_set(sup_caps, 50000baseCR2_Full); 519 phylink_set(sup_caps, 50000baseSR2_Full); 520 521 if (linkmode_intersects(link->supported_caps, sup_caps)) 522 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT; 523 524 phylink_zero(sup_caps); 525 phylink_set(sup_caps, 100000baseKR4_Full); 526 phylink_set(sup_caps, 100000baseSR4_Full); 527 phylink_set(sup_caps, 100000baseCR4_Full); 528 phylink_set(sup_caps, 100000baseLR4_ER4_Full); 529 530 if (linkmode_intersects(link->supported_caps, sup_caps)) 531 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT; 532 533 phylink_zero(sup_caps); 534 phylink_set(sup_caps, 20000baseKR2_Full); 535 536 if (linkmode_intersects(link->supported_caps, sup_caps)) 537 lport->link_supported_speeds |= FC_PORTSPEED_20GBIT; 538 539 if (lport->host && lport->host->shost_data) 540 fc_host_supported_speeds(lport->host) = 541 lport->link_supported_speeds; 542 } 543 544 static void qedf_bw_update(void *dev) 545 { 546 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 547 struct qed_link_output link; 548 549 /* Get the latest status of the link */ 550 qed_ops->common->get_link(qedf->cdev, &link); 551 552 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 553 QEDF_ERR(&qedf->dbg_ctx, 554 "Ignore link update, driver getting unload.\n"); 555 return; 556 } 557 558 if (link.link_up) { 559 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) 560 qedf_update_link_speed(qedf, &link); 561 else 562 QEDF_ERR(&qedf->dbg_ctx, 563 "Ignore bw update, link is down.\n"); 564 565 } else { 566 QEDF_ERR(&qedf->dbg_ctx, "link_up is not set.\n"); 567 } 568 } 569 570 static void qedf_link_update(void *dev, struct qed_link_output *link) 571 { 572 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 573 574 /* 575 * Prevent race where we're removing the module and we get link update 576 * for qed. 577 */ 578 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 579 QEDF_ERR(&qedf->dbg_ctx, 580 "Ignore link update, driver getting unload.\n"); 581 return; 582 } 583 584 if (link->link_up) { 585 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 586 QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC, 587 "Ignoring link up event as link is already up.\n"); 588 return; 589 } 590 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n", 591 link->speed / 1000); 592 593 /* Cancel any pending link down work */ 594 cancel_delayed_work(&qedf->link_update); 595 596 atomic_set(&qedf->link_state, QEDF_LINK_UP); 597 qedf_update_link_speed(qedf, link); 598 599 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE || 600 qedf_dcbx_no_wait) { 601 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 602 "DCBx done.\n"); 603 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 604 queue_delayed_work(qedf->link_update_wq, 605 &qedf->link_recovery, 0); 606 else 607 queue_delayed_work(qedf->link_update_wq, 608 &qedf->link_update, 0); 609 atomic_set(&qedf->link_down_tmo_valid, 0); 610 } 611 612 } else { 613 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n"); 614 615 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 616 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 617 /* 618 * Flag that we're waiting for the link to come back up before 619 * informing the fcoe layer of the event. 620 */ 621 if (qedf_link_down_tmo > 0) { 622 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 623 "Starting link down tmo.\n"); 624 atomic_set(&qedf->link_down_tmo_valid, 1); 625 } 626 qedf->vlan_id = 0; 627 qedf_update_link_speed(qedf, link); 628 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 629 qedf_link_down_tmo * HZ); 630 } 631 } 632 633 634 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type) 635 { 636 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 637 u8 tmp_prio; 638 639 QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe " 640 "prio=%d.\n", get->operational.valid, get->operational.enabled, 641 get->operational.app_prio.fcoe); 642 643 if (get->operational.enabled && get->operational.valid) { 644 /* If DCBX was already negotiated on link up then just exit */ 645 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) { 646 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 647 "DCBX already set on link up.\n"); 648 return; 649 } 650 651 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE); 652 653 /* 654 * Set the 8021q priority in the following manner: 655 * 656 * 1. If a modparam is set use that 657 * 2. If the value is not between 0..7 use the default 658 * 3. Use the priority we get from the DCBX app tag 659 */ 660 tmp_prio = get->operational.app_prio.fcoe; 661 if (qedf_default_prio > -1) 662 qedf->prio = qedf_default_prio; 663 else if (tmp_prio > 7) { 664 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 665 "FIP/FCoE prio %d out of range, setting to %d.\n", 666 tmp_prio, QEDF_DEFAULT_PRIO); 667 qedf->prio = QEDF_DEFAULT_PRIO; 668 } else 669 qedf->prio = tmp_prio; 670 671 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP && 672 !qedf_dcbx_no_wait) { 673 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 674 queue_delayed_work(qedf->link_update_wq, 675 &qedf->link_recovery, 0); 676 else 677 queue_delayed_work(qedf->link_update_wq, 678 &qedf->link_update, 0); 679 atomic_set(&qedf->link_down_tmo_valid, 0); 680 } 681 } 682 683 } 684 685 static u32 qedf_get_login_failures(void *cookie) 686 { 687 struct qedf_ctx *qedf; 688 689 qedf = (struct qedf_ctx *)cookie; 690 return qedf->flogi_failed; 691 } 692 693 static struct qed_fcoe_cb_ops qedf_cb_ops = { 694 { 695 .link_update = qedf_link_update, 696 .bw_update = qedf_bw_update, 697 .schedule_recovery_handler = qedf_schedule_recovery_handler, 698 .dcbx_aen = qedf_dcbx_handler, 699 .get_generic_tlv_data = qedf_get_generic_tlv_data, 700 .get_protocol_tlv_data = qedf_get_protocol_tlv_data, 701 .schedule_hw_err_handler = qedf_schedule_hw_err_handler, 702 } 703 }; 704 705 /* 706 * Various transport templates. 707 */ 708 709 static struct scsi_transport_template *qedf_fc_transport_template; 710 static struct scsi_transport_template *qedf_fc_vport_transport_template; 711 712 /* 713 * SCSI EH handlers 714 */ 715 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd) 716 { 717 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); 718 struct fc_lport *lport; 719 struct qedf_ctx *qedf; 720 struct qedf_ioreq *io_req; 721 struct fc_rport_libfc_priv *rp = rport->dd_data; 722 struct fc_rport_priv *rdata; 723 struct qedf_rport *fcport = NULL; 724 int rc = FAILED; 725 int wait_count = 100; 726 int refcount = 0; 727 int rval; 728 int got_ref = 0; 729 730 lport = shost_priv(sc_cmd->device->host); 731 qedf = (struct qedf_ctx *)lport_priv(lport); 732 733 /* rport and tgt are allocated together, so tgt should be non-NULL */ 734 fcport = (struct qedf_rport *)&rp[1]; 735 rdata = fcport->rdata; 736 if (!rdata || !kref_get_unless_zero(&rdata->kref)) { 737 QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd); 738 rc = SUCCESS; 739 goto out; 740 } 741 742 743 io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr; 744 if (!io_req) { 745 QEDF_ERR(&qedf->dbg_ctx, 746 "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n", 747 sc_cmd, sc_cmd->cmnd[0], 748 rdata->ids.port_id); 749 rc = SUCCESS; 750 goto drop_rdata_kref; 751 } 752 753 rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */ 754 if (rval) 755 got_ref = 1; 756 757 /* If we got a valid io_req, confirm it belongs to this sc_cmd. */ 758 if (!rval || io_req->sc_cmd != sc_cmd) { 759 QEDF_ERR(&qedf->dbg_ctx, 760 "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n", 761 io_req->sc_cmd, sc_cmd, rdata->ids.port_id); 762 763 goto drop_rdata_kref; 764 } 765 766 if (fc_remote_port_chkready(rport)) { 767 refcount = kref_read(&io_req->refcount); 768 QEDF_ERR(&qedf->dbg_ctx, 769 "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n", 770 io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0], 771 refcount, rdata->ids.port_id); 772 773 goto drop_rdata_kref; 774 } 775 776 rc = fc_block_scsi_eh(sc_cmd); 777 if (rc) 778 goto drop_rdata_kref; 779 780 if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) { 781 QEDF_ERR(&qedf->dbg_ctx, 782 "Connection uploading, xid=0x%x., port_id=%06x\n", 783 io_req->xid, rdata->ids.port_id); 784 while (io_req->sc_cmd && (wait_count != 0)) { 785 msleep(100); 786 wait_count--; 787 } 788 if (wait_count) { 789 QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n"); 790 rc = SUCCESS; 791 } else { 792 QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n"); 793 rc = FAILED; 794 } 795 goto drop_rdata_kref; 796 } 797 798 if (lport->state != LPORT_ST_READY || !(lport->link_up)) { 799 QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n"); 800 goto drop_rdata_kref; 801 } 802 803 QEDF_ERR(&qedf->dbg_ctx, 804 "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n", 805 io_req, sc_cmd, io_req->xid, io_req->fp_idx, 806 rdata->ids.port_id); 807 808 if (qedf->stop_io_on_error) { 809 qedf_stop_all_io(qedf); 810 rc = SUCCESS; 811 goto drop_rdata_kref; 812 } 813 814 init_completion(&io_req->abts_done); 815 rval = qedf_initiate_abts(io_req, true); 816 if (rval) { 817 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n"); 818 /* 819 * If we fail to queue the ABTS then return this command to 820 * the SCSI layer as it will own and free the xid 821 */ 822 rc = SUCCESS; 823 qedf_scsi_done(qedf, io_req, DID_ERROR); 824 goto drop_rdata_kref; 825 } 826 827 wait_for_completion(&io_req->abts_done); 828 829 if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS || 830 io_req->event == QEDF_IOREQ_EV_ABORT_FAILED || 831 io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) { 832 /* 833 * If we get a reponse to the abort this is success from 834 * the perspective that all references to the command have 835 * been removed from the driver and firmware 836 */ 837 rc = SUCCESS; 838 } else { 839 /* If the abort and cleanup failed then return a failure */ 840 rc = FAILED; 841 } 842 843 if (rc == SUCCESS) 844 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n", 845 io_req->xid); 846 else 847 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n", 848 io_req->xid); 849 850 drop_rdata_kref: 851 kref_put(&rdata->kref, fc_rport_destroy); 852 out: 853 if (got_ref) 854 kref_put(&io_req->refcount, qedf_release_cmd); 855 return rc; 856 } 857 858 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd) 859 { 860 QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...", 861 sc_cmd->device->host->host_no, sc_cmd->device->id, 862 sc_cmd->device->lun); 863 return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET); 864 } 865 866 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd) 867 { 868 QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ", 869 sc_cmd->device->host->host_no, sc_cmd->device->id, 870 sc_cmd->device->lun); 871 return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET); 872 } 873 874 bool qedf_wait_for_upload(struct qedf_ctx *qedf) 875 { 876 struct qedf_rport *fcport = NULL; 877 int wait_cnt = 120; 878 879 while (wait_cnt--) { 880 if (atomic_read(&qedf->num_offloads)) 881 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 882 "Waiting for all uploads to complete num_offloads = 0x%x.\n", 883 atomic_read(&qedf->num_offloads)); 884 else 885 return true; 886 msleep(500); 887 } 888 889 rcu_read_lock(); 890 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 891 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, 892 &fcport->flags)) { 893 if (fcport->rdata) 894 QEDF_ERR(&qedf->dbg_ctx, 895 "Waiting for fcport %p portid=%06x.\n", 896 fcport, fcport->rdata->ids.port_id); 897 } else { 898 QEDF_ERR(&qedf->dbg_ctx, 899 "Waiting for fcport %p.\n", fcport); 900 } 901 } 902 rcu_read_unlock(); 903 return false; 904 905 } 906 907 /* Performs soft reset of qedf_ctx by simulating a link down/up */ 908 void qedf_ctx_soft_reset(struct fc_lport *lport) 909 { 910 struct qedf_ctx *qedf; 911 struct qed_link_output if_link; 912 913 if (lport->vport) { 914 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n"); 915 return; 916 } 917 918 qedf = lport_priv(lport); 919 920 qedf->flogi_pending = 0; 921 /* For host reset, essentially do a soft link up/down */ 922 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 923 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 924 "Queuing link down work.\n"); 925 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 926 0); 927 928 if (qedf_wait_for_upload(qedf) == false) { 929 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 930 WARN_ON(atomic_read(&qedf->num_offloads)); 931 } 932 933 /* Before setting link up query physical link state */ 934 qed_ops->common->get_link(qedf->cdev, &if_link); 935 /* Bail if the physical link is not up */ 936 if (!if_link.link_up) { 937 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 938 "Physical link is not up.\n"); 939 return; 940 } 941 /* Flush and wait to make sure link down is processed */ 942 flush_delayed_work(&qedf->link_update); 943 msleep(500); 944 945 atomic_set(&qedf->link_state, QEDF_LINK_UP); 946 qedf->vlan_id = 0; 947 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 948 "Queue link up work.\n"); 949 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 950 0); 951 } 952 953 /* Reset the host by gracefully logging out and then logging back in */ 954 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd) 955 { 956 struct fc_lport *lport; 957 struct qedf_ctx *qedf; 958 959 lport = shost_priv(sc_cmd->device->host); 960 qedf = lport_priv(lport); 961 962 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN || 963 test_bit(QEDF_UNLOADING, &qedf->flags)) 964 return FAILED; 965 966 QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued..."); 967 968 qedf_ctx_soft_reset(lport); 969 970 return SUCCESS; 971 } 972 973 static int qedf_slave_configure(struct scsi_device *sdev) 974 { 975 if (qedf_queue_depth) { 976 scsi_change_queue_depth(sdev, qedf_queue_depth); 977 } 978 979 return 0; 980 } 981 982 static struct scsi_host_template qedf_host_template = { 983 .module = THIS_MODULE, 984 .name = QEDF_MODULE_NAME, 985 .this_id = -1, 986 .cmd_per_lun = 32, 987 .max_sectors = 0xffff, 988 .queuecommand = qedf_queuecommand, 989 .shost_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 }; 1000 1001 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen) 1002 { 1003 int rc; 1004 1005 spin_lock(&qedf_global_lock); 1006 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global); 1007 spin_unlock(&qedf_global_lock); 1008 1009 return rc; 1010 } 1011 1012 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id) 1013 { 1014 struct qedf_rport *fcport; 1015 struct fc_rport_priv *rdata; 1016 1017 rcu_read_lock(); 1018 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 1019 rdata = fcport->rdata; 1020 if (rdata == NULL) 1021 continue; 1022 if (rdata->ids.port_id == port_id) { 1023 rcu_read_unlock(); 1024 return fcport; 1025 } 1026 } 1027 rcu_read_unlock(); 1028 1029 /* Return NULL to caller to let them know fcport was not found */ 1030 return NULL; 1031 } 1032 1033 /* Transmits an ELS frame over an offloaded session */ 1034 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp) 1035 { 1036 struct fc_frame_header *fh; 1037 int rc = 0; 1038 1039 fh = fc_frame_header_get(fp); 1040 if ((fh->fh_type == FC_TYPE_ELS) && 1041 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 1042 switch (fc_frame_payload_op(fp)) { 1043 case ELS_ADISC: 1044 qedf_send_adisc(fcport, fp); 1045 rc = 1; 1046 break; 1047 } 1048 } 1049 1050 return rc; 1051 } 1052 1053 /* 1054 * qedf_xmit - qedf FCoE frame transmit function 1055 */ 1056 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp) 1057 { 1058 struct fc_lport *base_lport; 1059 struct qedf_ctx *qedf; 1060 struct ethhdr *eh; 1061 struct fcoe_crc_eof *cp; 1062 struct sk_buff *skb; 1063 struct fc_frame_header *fh; 1064 struct fcoe_hdr *hp; 1065 u8 sof, eof; 1066 u32 crc; 1067 unsigned int hlen, tlen, elen; 1068 int wlen; 1069 struct fc_stats *stats; 1070 struct fc_lport *tmp_lport; 1071 struct fc_lport *vn_port = NULL; 1072 struct qedf_rport *fcport; 1073 int rc; 1074 u16 vlan_tci = 0; 1075 1076 qedf = (struct qedf_ctx *)lport_priv(lport); 1077 1078 fh = fc_frame_header_get(fp); 1079 skb = fp_skb(fp); 1080 1081 /* Filter out traffic to other NPIV ports on the same host */ 1082 if (lport->vport) 1083 base_lport = shost_priv(vport_to_shost(lport->vport)); 1084 else 1085 base_lport = lport; 1086 1087 /* Flag if the destination is the base port */ 1088 if (base_lport->port_id == ntoh24(fh->fh_d_id)) { 1089 vn_port = base_lport; 1090 } else { 1091 /* Got through the list of vports attached to the base_lport 1092 * and see if we have a match with the destination address. 1093 */ 1094 list_for_each_entry(tmp_lport, &base_lport->vports, list) { 1095 if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) { 1096 vn_port = tmp_lport; 1097 break; 1098 } 1099 } 1100 } 1101 if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) { 1102 struct fc_rport_priv *rdata = NULL; 1103 1104 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 1105 "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id)); 1106 kfree_skb(skb); 1107 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id)); 1108 if (rdata) { 1109 rdata->retries = lport->max_rport_retry_count; 1110 kref_put(&rdata->kref, fc_rport_destroy); 1111 } 1112 return -EINVAL; 1113 } 1114 /* End NPIV filtering */ 1115 1116 if (!qedf->ctlr.sel_fcf) { 1117 kfree_skb(skb); 1118 return 0; 1119 } 1120 1121 if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) { 1122 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n"); 1123 kfree_skb(skb); 1124 return 0; 1125 } 1126 1127 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 1128 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n"); 1129 kfree_skb(skb); 1130 return 0; 1131 } 1132 1133 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 1134 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb)) 1135 return 0; 1136 } 1137 1138 /* Check to see if this needs to be sent on an offloaded session */ 1139 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 1140 1141 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1142 rc = qedf_xmit_l2_frame(fcport, fp); 1143 /* 1144 * If the frame was successfully sent over the middle path 1145 * then do not try to also send it over the LL2 path 1146 */ 1147 if (rc) 1148 return 0; 1149 } 1150 1151 sof = fr_sof(fp); 1152 eof = fr_eof(fp); 1153 1154 elen = sizeof(struct ethhdr); 1155 hlen = sizeof(struct fcoe_hdr); 1156 tlen = sizeof(struct fcoe_crc_eof); 1157 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; 1158 1159 skb->ip_summed = CHECKSUM_NONE; 1160 crc = fcoe_fc_crc(fp); 1161 1162 /* copy port crc and eof to the skb buff */ 1163 if (skb_is_nonlinear(skb)) { 1164 skb_frag_t *frag; 1165 1166 if (qedf_get_paged_crc_eof(skb, tlen)) { 1167 kfree_skb(skb); 1168 return -ENOMEM; 1169 } 1170 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; 1171 cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag); 1172 } else { 1173 cp = skb_put(skb, tlen); 1174 } 1175 1176 memset(cp, 0, sizeof(*cp)); 1177 cp->fcoe_eof = eof; 1178 cp->fcoe_crc32 = cpu_to_le32(~crc); 1179 if (skb_is_nonlinear(skb)) { 1180 kunmap_atomic(cp); 1181 cp = NULL; 1182 } 1183 1184 1185 /* adjust skb network/transport offsets to match mac/fcoe/port */ 1186 skb_push(skb, elen + hlen); 1187 skb_reset_mac_header(skb); 1188 skb_reset_network_header(skb); 1189 skb->mac_len = elen; 1190 skb->protocol = htons(ETH_P_FCOE); 1191 1192 /* 1193 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN 1194 * for FIP/FCoE traffic. 1195 */ 1196 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id); 1197 1198 /* fill up mac and fcoe headers */ 1199 eh = eth_hdr(skb); 1200 eh->h_proto = htons(ETH_P_FCOE); 1201 if (qedf->ctlr.map_dest) 1202 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); 1203 else 1204 /* insert GW address */ 1205 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr); 1206 1207 /* Set the source MAC address */ 1208 ether_addr_copy(eh->h_source, qedf->data_src_addr); 1209 1210 hp = (struct fcoe_hdr *)(eh + 1); 1211 memset(hp, 0, sizeof(*hp)); 1212 if (FC_FCOE_VER) 1213 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); 1214 hp->fcoe_sof = sof; 1215 1216 /*update tx stats */ 1217 stats = per_cpu_ptr(lport->stats, get_cpu()); 1218 stats->TxFrames++; 1219 stats->TxWords += wlen; 1220 put_cpu(); 1221 1222 /* Get VLAN ID from skb for printing purposes */ 1223 __vlan_hwaccel_get_tag(skb, &vlan_tci); 1224 1225 /* send down to lld */ 1226 fr_dev(fp) = lport; 1227 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: " 1228 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n", 1229 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type, 1230 vlan_tci); 1231 if (qedf_dump_frames) 1232 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 1233 1, skb->data, skb->len, false); 1234 rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0); 1235 if (rc) { 1236 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc); 1237 kfree_skb(skb); 1238 return rc; 1239 } 1240 1241 return 0; 1242 } 1243 1244 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1245 { 1246 int rval = 0; 1247 u32 *pbl; 1248 dma_addr_t page; 1249 int num_pages; 1250 1251 /* Calculate appropriate queue and PBL sizes */ 1252 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 1253 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE); 1254 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) * 1255 sizeof(void *); 1256 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE; 1257 1258 fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1259 &fcport->sq_dma, GFP_KERNEL); 1260 if (!fcport->sq) { 1261 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n"); 1262 rval = 1; 1263 goto out; 1264 } 1265 1266 fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 1267 fcport->sq_pbl_size, 1268 &fcport->sq_pbl_dma, GFP_KERNEL); 1269 if (!fcport->sq_pbl) { 1270 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n"); 1271 rval = 1; 1272 goto out_free_sq; 1273 } 1274 1275 /* Create PBL */ 1276 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE; 1277 page = fcport->sq_dma; 1278 pbl = (u32 *)fcport->sq_pbl; 1279 1280 while (num_pages--) { 1281 *pbl = U64_LO(page); 1282 pbl++; 1283 *pbl = U64_HI(page); 1284 pbl++; 1285 page += QEDF_PAGE_SIZE; 1286 } 1287 1288 return rval; 1289 1290 out_free_sq: 1291 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq, 1292 fcport->sq_dma); 1293 out: 1294 return rval; 1295 } 1296 1297 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1298 { 1299 if (fcport->sq_pbl) 1300 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size, 1301 fcport->sq_pbl, fcport->sq_pbl_dma); 1302 if (fcport->sq) 1303 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1304 fcport->sq, fcport->sq_dma); 1305 } 1306 1307 static int qedf_offload_connection(struct qedf_ctx *qedf, 1308 struct qedf_rport *fcport) 1309 { 1310 struct qed_fcoe_params_offload conn_info; 1311 u32 port_id; 1312 int rval; 1313 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe)); 1314 1315 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection " 1316 "portid=%06x.\n", fcport->rdata->ids.port_id); 1317 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle, 1318 &fcport->fw_cid, &fcport->p_doorbell); 1319 if (rval) { 1320 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection " 1321 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1322 rval = 1; /* For some reason qed returns 0 on failure here */ 1323 goto out; 1324 } 1325 1326 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x " 1327 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id, 1328 fcport->fw_cid, fcport->handle); 1329 1330 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload)); 1331 1332 /* Fill in the offload connection info */ 1333 conn_info.sq_pbl_addr = fcport->sq_pbl_dma; 1334 1335 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl); 1336 conn_info.sq_next_page_addr = 1337 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8)); 1338 1339 /* Need to use our FCoE MAC for the offload session */ 1340 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr); 1341 1342 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr); 1343 1344 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size; 1345 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov; 1346 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */ 1347 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size; 1348 1349 /* Set VLAN data */ 1350 conn_info.vlan_tag = qedf->vlan_id << 1351 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT; 1352 conn_info.vlan_tag |= 1353 qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT; 1354 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK << 1355 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT); 1356 1357 /* Set host port source id */ 1358 port_id = fc_host_port_id(qedf->lport->host); 1359 fcport->sid = port_id; 1360 conn_info.s_id.addr_hi = (port_id & 0x000000FF); 1361 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1362 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1363 1364 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq; 1365 1366 /* Set remote port destination id */ 1367 port_id = fcport->rdata->rport->port_id; 1368 conn_info.d_id.addr_hi = (port_id & 0x000000FF); 1369 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1370 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1371 1372 conn_info.def_q_idx = 0; /* Default index for send queue? */ 1373 1374 /* Set FC-TAPE specific flags if needed */ 1375 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) { 1376 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, 1377 "Enable CONF, REC for portid=%06x.\n", 1378 fcport->rdata->ids.port_id); 1379 conn_info.flags |= 1 << 1380 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT; 1381 conn_info.flags |= 1382 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) << 1383 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT; 1384 } 1385 1386 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info); 1387 if (rval) { 1388 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection " 1389 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1390 goto out_free_conn; 1391 } else 1392 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload " 1393 "succeeded portid=%06x total_sqe=%d.\n", 1394 fcport->rdata->ids.port_id, total_sqe); 1395 1396 spin_lock_init(&fcport->rport_lock); 1397 atomic_set(&fcport->free_sqes, total_sqe); 1398 return 0; 1399 out_free_conn: 1400 qed_ops->release_conn(qedf->cdev, fcport->handle); 1401 out: 1402 return rval; 1403 } 1404 1405 #define QEDF_TERM_BUFF_SIZE 10 1406 static void qedf_upload_connection(struct qedf_ctx *qedf, 1407 struct qedf_rport *fcport) 1408 { 1409 void *term_params; 1410 dma_addr_t term_params_dma; 1411 1412 /* Term params needs to be a DMA coherent buffer as qed shared the 1413 * physical DMA address with the firmware. The buffer may be used in 1414 * the receive path so we may eventually have to move this. 1415 */ 1416 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, 1417 &term_params_dma, GFP_KERNEL); 1418 if (!term_params) 1419 return; 1420 1421 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection " 1422 "port_id=%06x.\n", fcport->rdata->ids.port_id); 1423 1424 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma); 1425 qed_ops->release_conn(qedf->cdev, fcport->handle); 1426 1427 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params, 1428 term_params_dma); 1429 } 1430 1431 static void qedf_cleanup_fcport(struct qedf_ctx *qedf, 1432 struct qedf_rport *fcport) 1433 { 1434 struct fc_rport_priv *rdata = fcport->rdata; 1435 1436 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n", 1437 fcport->rdata->ids.port_id); 1438 1439 /* Flush any remaining i/o's before we upload the connection */ 1440 qedf_flush_active_ios(fcport, -1); 1441 1442 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) 1443 qedf_upload_connection(qedf, fcport); 1444 qedf_free_sq(qedf, fcport); 1445 fcport->rdata = NULL; 1446 fcport->qedf = NULL; 1447 kref_put(&rdata->kref, fc_rport_destroy); 1448 } 1449 1450 /* 1451 * This event_callback is called after successful completion of libfc 1452 * initiated target login. qedf can proceed with initiating the session 1453 * establishment. 1454 */ 1455 static void qedf_rport_event_handler(struct fc_lport *lport, 1456 struct fc_rport_priv *rdata, 1457 enum fc_rport_event event) 1458 { 1459 struct qedf_ctx *qedf = lport_priv(lport); 1460 struct fc_rport *rport = rdata->rport; 1461 struct fc_rport_libfc_priv *rp; 1462 struct qedf_rport *fcport; 1463 u32 port_id; 1464 int rval; 1465 unsigned long flags; 1466 1467 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, " 1468 "port_id = 0x%x\n", event, rdata->ids.port_id); 1469 1470 switch (event) { 1471 case RPORT_EV_READY: 1472 if (!rport) { 1473 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n"); 1474 break; 1475 } 1476 1477 rp = rport->dd_data; 1478 fcport = (struct qedf_rport *)&rp[1]; 1479 fcport->qedf = qedf; 1480 1481 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) { 1482 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading " 1483 "portid=0x%x as max number of offloaded sessions " 1484 "reached.\n", rdata->ids.port_id); 1485 return; 1486 } 1487 1488 /* 1489 * Don't try to offload the session again. Can happen when we 1490 * get an ADISC 1491 */ 1492 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1493 QEDF_WARN(&(qedf->dbg_ctx), "Session already " 1494 "offloaded, portid=0x%x.\n", 1495 rdata->ids.port_id); 1496 return; 1497 } 1498 1499 if (rport->port_id == FC_FID_DIR_SERV) { 1500 /* 1501 * qedf_rport structure doesn't exist for 1502 * directory server. 1503 * We should not come here, as lport will 1504 * take care of fabric login 1505 */ 1506 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not " 1507 "exist for dir server port_id=%x\n", 1508 rdata->ids.port_id); 1509 break; 1510 } 1511 1512 if (rdata->spp_type != FC_TYPE_FCP) { 1513 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1514 "Not offloading since spp type isn't FCP\n"); 1515 break; 1516 } 1517 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1518 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1519 "Not FCP target so not offloading\n"); 1520 break; 1521 } 1522 1523 /* Initial reference held on entry, so this can't fail */ 1524 kref_get(&rdata->kref); 1525 fcport->rdata = rdata; 1526 fcport->rport = rport; 1527 1528 rval = qedf_alloc_sq(qedf, fcport); 1529 if (rval) { 1530 qedf_cleanup_fcport(qedf, fcport); 1531 break; 1532 } 1533 1534 /* Set device type */ 1535 if (rdata->flags & FC_RP_FLAGS_RETRY && 1536 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET && 1537 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) { 1538 fcport->dev_type = QEDF_RPORT_TYPE_TAPE; 1539 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1540 "portid=%06x is a TAPE device.\n", 1541 rdata->ids.port_id); 1542 } else { 1543 fcport->dev_type = QEDF_RPORT_TYPE_DISK; 1544 } 1545 1546 rval = qedf_offload_connection(qedf, fcport); 1547 if (rval) { 1548 qedf_cleanup_fcport(qedf, fcport); 1549 break; 1550 } 1551 1552 /* Add fcport to list of qedf_ctx list of offloaded ports */ 1553 spin_lock_irqsave(&qedf->hba_lock, flags); 1554 list_add_rcu(&fcport->peers, &qedf->fcports); 1555 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1556 1557 /* 1558 * Set the session ready bit to let everyone know that this 1559 * connection is ready for I/O 1560 */ 1561 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags); 1562 atomic_inc(&qedf->num_offloads); 1563 1564 break; 1565 case RPORT_EV_LOGO: 1566 case RPORT_EV_FAILED: 1567 case RPORT_EV_STOP: 1568 port_id = rdata->ids.port_id; 1569 if (port_id == FC_FID_DIR_SERV) 1570 break; 1571 1572 if (rdata->spp_type != FC_TYPE_FCP) { 1573 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1574 "No action since spp type isn't FCP\n"); 1575 break; 1576 } 1577 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1578 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1579 "Not FCP target so no action\n"); 1580 break; 1581 } 1582 1583 if (!rport) { 1584 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1585 "port_id=%x - rport notcreated Yet!!\n", port_id); 1586 break; 1587 } 1588 rp = rport->dd_data; 1589 /* 1590 * Perform session upload. Note that rdata->peers is already 1591 * removed from disc->rports list before we get this event. 1592 */ 1593 fcport = (struct qedf_rport *)&rp[1]; 1594 1595 spin_lock_irqsave(&fcport->rport_lock, flags); 1596 /* Only free this fcport if it is offloaded already */ 1597 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) && 1598 !test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1599 &fcport->flags)) { 1600 set_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1601 &fcport->flags); 1602 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1603 qedf_cleanup_fcport(qedf, fcport); 1604 /* 1605 * Remove fcport to list of qedf_ctx list of offloaded 1606 * ports 1607 */ 1608 spin_lock_irqsave(&qedf->hba_lock, flags); 1609 list_del_rcu(&fcport->peers); 1610 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1611 1612 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1613 &fcport->flags); 1614 atomic_dec(&qedf->num_offloads); 1615 } else { 1616 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1617 } 1618 break; 1619 1620 case RPORT_EV_NONE: 1621 break; 1622 } 1623 } 1624 1625 static void qedf_abort_io(struct fc_lport *lport) 1626 { 1627 /* NO-OP but need to fill in the template */ 1628 } 1629 1630 static void qedf_fcp_cleanup(struct fc_lport *lport) 1631 { 1632 /* 1633 * NO-OP but need to fill in template to prevent a NULL 1634 * function pointer dereference during link down. I/Os 1635 * will be flushed when port is uploaded. 1636 */ 1637 } 1638 1639 static struct libfc_function_template qedf_lport_template = { 1640 .frame_send = qedf_xmit, 1641 .fcp_abort_io = qedf_abort_io, 1642 .fcp_cleanup = qedf_fcp_cleanup, 1643 .rport_event_callback = qedf_rport_event_handler, 1644 .elsct_send = qedf_elsct_send, 1645 }; 1646 1647 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf) 1648 { 1649 fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO); 1650 1651 qedf->ctlr.send = qedf_fip_send; 1652 qedf->ctlr.get_src_addr = qedf_get_src_mac; 1653 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac); 1654 } 1655 1656 static void qedf_setup_fdmi(struct qedf_ctx *qedf) 1657 { 1658 struct fc_lport *lport = qedf->lport; 1659 u8 buf[8]; 1660 int pos; 1661 uint32_t i; 1662 1663 /* 1664 * fdmi_enabled needs to be set for libfc 1665 * to execute FDMI registration 1666 */ 1667 lport->fdmi_enabled = 1; 1668 1669 /* 1670 * Setup the necessary fc_host attributes to that will be used to fill 1671 * in the FDMI information. 1672 */ 1673 1674 /* Get the PCI-e Device Serial Number Capability */ 1675 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN); 1676 if (pos) { 1677 pos += 4; 1678 for (i = 0; i < 8; i++) 1679 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]); 1680 1681 snprintf(fc_host_serial_number(lport->host), 1682 FC_SERIAL_NUMBER_SIZE, 1683 "%02X%02X%02X%02X%02X%02X%02X%02X", 1684 buf[7], buf[6], buf[5], buf[4], 1685 buf[3], buf[2], buf[1], buf[0]); 1686 } else 1687 snprintf(fc_host_serial_number(lport->host), 1688 FC_SERIAL_NUMBER_SIZE, "Unknown"); 1689 1690 snprintf(fc_host_manufacturer(lport->host), 1691 FC_SERIAL_NUMBER_SIZE, "%s", "Marvell Semiconductor Inc."); 1692 1693 if (qedf->pdev->device == QL45xxx) { 1694 snprintf(fc_host_model(lport->host), 1695 FC_SYMBOLIC_NAME_SIZE, "%s", "QL45xxx"); 1696 1697 snprintf(fc_host_model_description(lport->host), 1698 FC_SYMBOLIC_NAME_SIZE, "%s", 1699 "Marvell FastLinQ QL45xxx FCoE Adapter"); 1700 } 1701 1702 if (qedf->pdev->device == QL41xxx) { 1703 snprintf(fc_host_model(lport->host), 1704 FC_SYMBOLIC_NAME_SIZE, "%s", "QL41xxx"); 1705 1706 snprintf(fc_host_model_description(lport->host), 1707 FC_SYMBOLIC_NAME_SIZE, "%s", 1708 "Marvell FastLinQ QL41xxx FCoE Adapter"); 1709 } 1710 1711 snprintf(fc_host_hardware_version(lport->host), 1712 FC_VERSION_STRING_SIZE, "Rev %d", qedf->pdev->revision); 1713 1714 snprintf(fc_host_driver_version(lport->host), 1715 FC_VERSION_STRING_SIZE, "%s", QEDF_VERSION); 1716 1717 snprintf(fc_host_firmware_version(lport->host), 1718 FC_VERSION_STRING_SIZE, "%d.%d.%d.%d", 1719 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 1720 FW_ENGINEERING_VERSION); 1721 1722 snprintf(fc_host_vendor_identifier(lport->host), 1723 FC_VENDOR_IDENTIFIER, "%s", "Marvell"); 1724 1725 } 1726 1727 static int qedf_lport_setup(struct qedf_ctx *qedf) 1728 { 1729 struct fc_lport *lport = qedf->lport; 1730 1731 lport->link_up = 0; 1732 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1733 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1734 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1735 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1736 lport->boot_time = jiffies; 1737 lport->e_d_tov = 2 * 1000; 1738 lport->r_a_tov = 10 * 1000; 1739 1740 /* Set NPIV support */ 1741 lport->does_npiv = 1; 1742 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV; 1743 1744 fc_set_wwnn(lport, qedf->wwnn); 1745 fc_set_wwpn(lport, qedf->wwpn); 1746 1747 if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) { 1748 QEDF_ERR(&qedf->dbg_ctx, 1749 "fcoe_libfc_config failed.\n"); 1750 return -ENOMEM; 1751 } 1752 1753 /* Allocate the exchange manager */ 1754 fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS, 1755 0xfffe, NULL); 1756 1757 if (fc_lport_init_stats(lport)) 1758 return -ENOMEM; 1759 1760 /* Finish lport config */ 1761 fc_lport_config(lport); 1762 1763 /* Set max frame size */ 1764 fc_set_mfs(lport, QEDF_MFS); 1765 fc_host_maxframe_size(lport->host) = lport->mfs; 1766 1767 /* Set default dev_loss_tmo based on module parameter */ 1768 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo; 1769 1770 /* Set symbolic node name */ 1771 if (qedf->pdev->device == QL45xxx) 1772 snprintf(fc_host_symbolic_name(lport->host), 256, 1773 "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION); 1774 1775 if (qedf->pdev->device == QL41xxx) 1776 snprintf(fc_host_symbolic_name(lport->host), 256, 1777 "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION); 1778 1779 qedf_setup_fdmi(qedf); 1780 1781 return 0; 1782 } 1783 1784 /* 1785 * NPIV functions 1786 */ 1787 1788 static int qedf_vport_libfc_config(struct fc_vport *vport, 1789 struct fc_lport *lport) 1790 { 1791 lport->link_up = 0; 1792 lport->qfull = 0; 1793 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1794 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1795 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1796 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1797 lport->boot_time = jiffies; 1798 lport->e_d_tov = 2 * 1000; 1799 lport->r_a_tov = 10 * 1000; 1800 lport->does_npiv = 1; /* Temporary until we add NPIV support */ 1801 1802 /* Allocate stats for vport */ 1803 if (fc_lport_init_stats(lport)) 1804 return -ENOMEM; 1805 1806 /* Finish lport config */ 1807 fc_lport_config(lport); 1808 1809 /* offload related configuration */ 1810 lport->crc_offload = 0; 1811 lport->seq_offload = 0; 1812 lport->lro_enabled = 0; 1813 lport->lro_xid = 0; 1814 lport->lso_max = 0; 1815 1816 return 0; 1817 } 1818 1819 static int qedf_vport_create(struct fc_vport *vport, bool disabled) 1820 { 1821 struct Scsi_Host *shost = vport_to_shost(vport); 1822 struct fc_lport *n_port = shost_priv(shost); 1823 struct fc_lport *vn_port; 1824 struct qedf_ctx *base_qedf = lport_priv(n_port); 1825 struct qedf_ctx *vport_qedf; 1826 1827 char buf[32]; 1828 int rc = 0; 1829 1830 rc = fcoe_validate_vport_create(vport); 1831 if (rc) { 1832 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1833 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, " 1834 "WWPN (0x%s) already exists.\n", buf); 1835 return rc; 1836 } 1837 1838 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) { 1839 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport " 1840 "because link is not up.\n"); 1841 return -EIO; 1842 } 1843 1844 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx)); 1845 if (!vn_port) { 1846 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport " 1847 "for vport.\n"); 1848 return -ENOMEM; 1849 } 1850 1851 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1852 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n", 1853 buf); 1854 1855 /* Copy some fields from base_qedf */ 1856 vport_qedf = lport_priv(vn_port); 1857 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx)); 1858 1859 /* Set qedf data specific to this vport */ 1860 vport_qedf->lport = vn_port; 1861 /* Use same hba_lock as base_qedf */ 1862 vport_qedf->hba_lock = base_qedf->hba_lock; 1863 vport_qedf->pdev = base_qedf->pdev; 1864 vport_qedf->cmd_mgr = base_qedf->cmd_mgr; 1865 init_completion(&vport_qedf->flogi_compl); 1866 INIT_LIST_HEAD(&vport_qedf->fcports); 1867 1868 rc = qedf_vport_libfc_config(vport, vn_port); 1869 if (rc) { 1870 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory " 1871 "for lport stats.\n"); 1872 goto err; 1873 } 1874 1875 fc_set_wwnn(vn_port, vport->node_name); 1876 fc_set_wwpn(vn_port, vport->port_name); 1877 vport_qedf->wwnn = vn_port->wwnn; 1878 vport_qedf->wwpn = vn_port->wwpn; 1879 1880 vn_port->host->transportt = qedf_fc_vport_transport_template; 1881 vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS; 1882 vn_port->host->max_lun = qedf_max_lun; 1883 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD; 1884 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN; 1885 vn_port->host->max_id = QEDF_MAX_SESSIONS; 1886 1887 rc = scsi_add_host(vn_port->host, &vport->dev); 1888 if (rc) { 1889 QEDF_WARN(&base_qedf->dbg_ctx, 1890 "Error adding Scsi_Host rc=0x%x.\n", rc); 1891 goto err; 1892 } 1893 1894 /* Set default dev_loss_tmo based on module parameter */ 1895 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo; 1896 1897 /* Init libfc stuffs */ 1898 memcpy(&vn_port->tt, &qedf_lport_template, 1899 sizeof(qedf_lport_template)); 1900 fc_exch_init(vn_port); 1901 fc_elsct_init(vn_port); 1902 fc_lport_init(vn_port); 1903 fc_disc_init(vn_port); 1904 fc_disc_config(vn_port, vn_port); 1905 1906 1907 /* Allocate the exchange manager */ 1908 shost = vport_to_shost(vport); 1909 n_port = shost_priv(shost); 1910 fc_exch_mgr_list_clone(n_port, vn_port); 1911 1912 /* Set max frame size */ 1913 fc_set_mfs(vn_port, QEDF_MFS); 1914 1915 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN; 1916 1917 if (disabled) { 1918 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1919 } else { 1920 vn_port->boot_time = jiffies; 1921 fc_fabric_login(vn_port); 1922 fc_vport_setlink(vn_port); 1923 } 1924 1925 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n", 1926 vn_port); 1927 1928 /* Set up debug context for vport */ 1929 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no; 1930 vport_qedf->dbg_ctx.pdev = base_qedf->pdev; 1931 1932 return 0; 1933 1934 err: 1935 scsi_host_put(vn_port->host); 1936 return rc; 1937 } 1938 1939 static int qedf_vport_destroy(struct fc_vport *vport) 1940 { 1941 struct Scsi_Host *shost = vport_to_shost(vport); 1942 struct fc_lport *n_port = shost_priv(shost); 1943 struct fc_lport *vn_port = vport->dd_data; 1944 struct qedf_ctx *qedf = lport_priv(vn_port); 1945 1946 if (!qedf) { 1947 QEDF_ERR(NULL, "qedf is NULL.\n"); 1948 goto out; 1949 } 1950 1951 /* Set unloading bit on vport qedf_ctx to prevent more I/O */ 1952 set_bit(QEDF_UNLOADING, &qedf->flags); 1953 1954 mutex_lock(&n_port->lp_mutex); 1955 list_del(&vn_port->list); 1956 mutex_unlock(&n_port->lp_mutex); 1957 1958 fc_fabric_logoff(vn_port); 1959 fc_lport_destroy(vn_port); 1960 1961 /* Detach from scsi-ml */ 1962 fc_remove_host(vn_port->host); 1963 scsi_remove_host(vn_port->host); 1964 1965 /* 1966 * Only try to release the exchange manager if the vn_port 1967 * configuration is complete. 1968 */ 1969 if (vn_port->state == LPORT_ST_READY) 1970 fc_exch_mgr_free(vn_port); 1971 1972 /* Free memory used by statistical counters */ 1973 fc_lport_free_stats(vn_port); 1974 1975 /* Release Scsi_Host */ 1976 scsi_host_put(vn_port->host); 1977 1978 out: 1979 return 0; 1980 } 1981 1982 static int qedf_vport_disable(struct fc_vport *vport, bool disable) 1983 { 1984 struct fc_lport *lport = vport->dd_data; 1985 1986 if (disable) { 1987 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1988 fc_fabric_logoff(lport); 1989 } else { 1990 lport->boot_time = jiffies; 1991 fc_fabric_login(lport); 1992 fc_vport_setlink(lport); 1993 } 1994 return 0; 1995 } 1996 1997 /* 1998 * During removal we need to wait for all the vports associated with a port 1999 * to be destroyed so we avoid a race condition where libfc is still trying 2000 * to reap vports while the driver remove function has already reaped the 2001 * driver contexts associated with the physical port. 2002 */ 2003 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf) 2004 { 2005 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host); 2006 2007 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 2008 "Entered.\n"); 2009 while (fc_host->npiv_vports_inuse > 0) { 2010 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 2011 "Waiting for all vports to be reaped.\n"); 2012 msleep(1000); 2013 } 2014 } 2015 2016 /** 2017 * qedf_fcoe_reset - Resets the fcoe 2018 * 2019 * @shost: shost the reset is from 2020 * 2021 * Returns: always 0 2022 */ 2023 static int qedf_fcoe_reset(struct Scsi_Host *shost) 2024 { 2025 struct fc_lport *lport = shost_priv(shost); 2026 2027 qedf_ctx_soft_reset(lport); 2028 return 0; 2029 } 2030 2031 static void qedf_get_host_port_id(struct Scsi_Host *shost) 2032 { 2033 struct fc_lport *lport = shost_priv(shost); 2034 2035 fc_host_port_id(shost) = lport->port_id; 2036 } 2037 2038 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host 2039 *shost) 2040 { 2041 struct fc_host_statistics *qedf_stats; 2042 struct fc_lport *lport = shost_priv(shost); 2043 struct qedf_ctx *qedf = lport_priv(lport); 2044 struct qed_fcoe_stats *fw_fcoe_stats; 2045 2046 qedf_stats = fc_get_host_stats(shost); 2047 2048 /* We don't collect offload stats for specific NPIV ports */ 2049 if (lport->vport) 2050 goto out; 2051 2052 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL); 2053 if (!fw_fcoe_stats) { 2054 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for " 2055 "fw_fcoe_stats.\n"); 2056 goto out; 2057 } 2058 2059 mutex_lock(&qedf->stats_mutex); 2060 2061 /* Query firmware for offload stats */ 2062 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats); 2063 2064 /* 2065 * The expectation is that we add our offload stats to the stats 2066 * being maintained by libfc each time the fc_get_host_status callback 2067 * is invoked. The additions are not carried over for each call to 2068 * the fc_get_host_stats callback. 2069 */ 2070 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt + 2071 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt + 2072 fw_fcoe_stats->fcoe_tx_other_pkt_cnt; 2073 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt + 2074 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt + 2075 fw_fcoe_stats->fcoe_rx_other_pkt_cnt; 2076 qedf_stats->fcp_input_megabytes += 2077 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000); 2078 qedf_stats->fcp_output_megabytes += 2079 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000); 2080 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4; 2081 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4; 2082 qedf_stats->invalid_crc_count += 2083 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt; 2084 qedf_stats->dumped_frames = 2085 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 2086 qedf_stats->error_frames += 2087 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 2088 qedf_stats->fcp_input_requests += qedf->input_requests; 2089 qedf_stats->fcp_output_requests += qedf->output_requests; 2090 qedf_stats->fcp_control_requests += qedf->control_requests; 2091 qedf_stats->fcp_packet_aborts += qedf->packet_aborts; 2092 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures; 2093 2094 mutex_unlock(&qedf->stats_mutex); 2095 kfree(fw_fcoe_stats); 2096 out: 2097 return qedf_stats; 2098 } 2099 2100 static struct fc_function_template qedf_fc_transport_fn = { 2101 .show_host_node_name = 1, 2102 .show_host_port_name = 1, 2103 .show_host_supported_classes = 1, 2104 .show_host_supported_fc4s = 1, 2105 .show_host_active_fc4s = 1, 2106 .show_host_maxframe_size = 1, 2107 2108 .get_host_port_id = qedf_get_host_port_id, 2109 .show_host_port_id = 1, 2110 .show_host_supported_speeds = 1, 2111 .get_host_speed = fc_get_host_speed, 2112 .show_host_speed = 1, 2113 .show_host_port_type = 1, 2114 .get_host_port_state = fc_get_host_port_state, 2115 .show_host_port_state = 1, 2116 .show_host_symbolic_name = 1, 2117 2118 /* 2119 * Tell FC transport to allocate enough space to store the backpointer 2120 * for the associate qedf_rport struct. 2121 */ 2122 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2123 sizeof(struct qedf_rport)), 2124 .show_rport_maxframe_size = 1, 2125 .show_rport_supported_classes = 1, 2126 .show_host_fabric_name = 1, 2127 .show_starget_node_name = 1, 2128 .show_starget_port_name = 1, 2129 .show_starget_port_id = 1, 2130 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2131 .show_rport_dev_loss_tmo = 1, 2132 .get_fc_host_stats = qedf_fc_get_host_stats, 2133 .issue_fc_host_lip = qedf_fcoe_reset, 2134 .vport_create = qedf_vport_create, 2135 .vport_delete = qedf_vport_destroy, 2136 .vport_disable = qedf_vport_disable, 2137 .bsg_request = fc_lport_bsg_request, 2138 }; 2139 2140 static struct fc_function_template qedf_fc_vport_transport_fn = { 2141 .show_host_node_name = 1, 2142 .show_host_port_name = 1, 2143 .show_host_supported_classes = 1, 2144 .show_host_supported_fc4s = 1, 2145 .show_host_active_fc4s = 1, 2146 .show_host_maxframe_size = 1, 2147 .show_host_port_id = 1, 2148 .show_host_supported_speeds = 1, 2149 .get_host_speed = fc_get_host_speed, 2150 .show_host_speed = 1, 2151 .show_host_port_type = 1, 2152 .get_host_port_state = fc_get_host_port_state, 2153 .show_host_port_state = 1, 2154 .show_host_symbolic_name = 1, 2155 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2156 sizeof(struct qedf_rport)), 2157 .show_rport_maxframe_size = 1, 2158 .show_rport_supported_classes = 1, 2159 .show_host_fabric_name = 1, 2160 .show_starget_node_name = 1, 2161 .show_starget_port_name = 1, 2162 .show_starget_port_id = 1, 2163 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2164 .show_rport_dev_loss_tmo = 1, 2165 .get_fc_host_stats = fc_get_host_stats, 2166 .issue_fc_host_lip = qedf_fcoe_reset, 2167 .bsg_request = fc_lport_bsg_request, 2168 }; 2169 2170 static bool qedf_fp_has_work(struct qedf_fastpath *fp) 2171 { 2172 struct qedf_ctx *qedf = fp->qedf; 2173 struct global_queue *que; 2174 struct qed_sb_info *sb_info = fp->sb_info; 2175 struct status_block *sb = sb_info->sb_virt; 2176 u16 prod_idx; 2177 2178 /* Get the pointer to the global CQ this completion is on */ 2179 que = qedf->global_queues[fp->sb_id]; 2180 2181 /* Be sure all responses have been written to PI */ 2182 rmb(); 2183 2184 /* Get the current firmware producer index */ 2185 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2186 2187 return (que->cq_prod_idx != prod_idx); 2188 } 2189 2190 /* 2191 * Interrupt handler code. 2192 */ 2193 2194 /* Process completion queue and copy CQE contents for deferred processesing 2195 * 2196 * Return true if we should wake the I/O thread, false if not. 2197 */ 2198 static bool qedf_process_completions(struct qedf_fastpath *fp) 2199 { 2200 struct qedf_ctx *qedf = fp->qedf; 2201 struct qed_sb_info *sb_info = fp->sb_info; 2202 struct status_block *sb = sb_info->sb_virt; 2203 struct global_queue *que; 2204 u16 prod_idx; 2205 struct fcoe_cqe *cqe; 2206 struct qedf_io_work *io_work; 2207 int num_handled = 0; 2208 unsigned int cpu; 2209 struct qedf_ioreq *io_req = NULL; 2210 u16 xid; 2211 u16 new_cqes; 2212 u32 comp_type; 2213 2214 /* Get the current firmware producer index */ 2215 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2216 2217 /* Get the pointer to the global CQ this completion is on */ 2218 que = qedf->global_queues[fp->sb_id]; 2219 2220 /* Calculate the amount of new elements since last processing */ 2221 new_cqes = (prod_idx >= que->cq_prod_idx) ? 2222 (prod_idx - que->cq_prod_idx) : 2223 0x10000 - que->cq_prod_idx + prod_idx; 2224 2225 /* Save producer index */ 2226 que->cq_prod_idx = prod_idx; 2227 2228 while (new_cqes) { 2229 fp->completions++; 2230 num_handled++; 2231 cqe = &que->cq[que->cq_cons_idx]; 2232 2233 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2234 FCOE_CQE_CQE_TYPE_MASK; 2235 2236 /* 2237 * Process unsolicited CQEs directly in the interrupt handler 2238 * sine we need the fastpath ID 2239 */ 2240 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) { 2241 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL, 2242 "Unsolicated CQE.\n"); 2243 qedf_process_unsol_compl(qedf, fp->sb_id, cqe); 2244 /* 2245 * Don't add a work list item. Increment consumer 2246 * consumer index and move on. 2247 */ 2248 goto inc_idx; 2249 } 2250 2251 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2252 io_req = &qedf->cmd_mgr->cmds[xid]; 2253 2254 /* 2255 * Figure out which percpu thread we should queue this I/O 2256 * on. 2257 */ 2258 if (!io_req) 2259 /* If there is not io_req assocated with this CQE 2260 * just queue it on CPU 0 2261 */ 2262 cpu = 0; 2263 else { 2264 cpu = io_req->cpu; 2265 io_req->int_cpu = smp_processor_id(); 2266 } 2267 2268 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC); 2269 if (!io_work) { 2270 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate " 2271 "work for I/O completion.\n"); 2272 continue; 2273 } 2274 memset(io_work, 0, sizeof(struct qedf_io_work)); 2275 2276 INIT_WORK(&io_work->work, qedf_fp_io_handler); 2277 2278 /* Copy contents of CQE for deferred processing */ 2279 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe)); 2280 2281 io_work->qedf = fp->qedf; 2282 io_work->fp = NULL; /* Only used for unsolicited frames */ 2283 2284 queue_work_on(cpu, qedf_io_wq, &io_work->work); 2285 2286 inc_idx: 2287 que->cq_cons_idx++; 2288 if (que->cq_cons_idx == fp->cq_num_entries) 2289 que->cq_cons_idx = 0; 2290 new_cqes--; 2291 } 2292 2293 return true; 2294 } 2295 2296 2297 /* MSI-X fastpath handler code */ 2298 static irqreturn_t qedf_msix_handler(int irq, void *dev_id) 2299 { 2300 struct qedf_fastpath *fp = dev_id; 2301 2302 if (!fp) { 2303 QEDF_ERR(NULL, "fp is null.\n"); 2304 return IRQ_HANDLED; 2305 } 2306 if (!fp->sb_info) { 2307 QEDF_ERR(NULL, "fp->sb_info in null."); 2308 return IRQ_HANDLED; 2309 } 2310 2311 /* 2312 * Disable interrupts for this status block while we process new 2313 * completions 2314 */ 2315 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/); 2316 2317 while (1) { 2318 qedf_process_completions(fp); 2319 2320 if (qedf_fp_has_work(fp) == 0) { 2321 /* Update the sb information */ 2322 qed_sb_update_sb_idx(fp->sb_info); 2323 2324 /* Check for more work */ 2325 rmb(); 2326 2327 if (qedf_fp_has_work(fp) == 0) { 2328 /* Re-enable interrupts */ 2329 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 2330 return IRQ_HANDLED; 2331 } 2332 } 2333 } 2334 2335 /* Do we ever want to break out of above loop? */ 2336 return IRQ_HANDLED; 2337 } 2338 2339 /* simd handler for MSI/INTa */ 2340 static void qedf_simd_int_handler(void *cookie) 2341 { 2342 /* Cookie is qedf_ctx struct */ 2343 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2344 2345 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf); 2346 } 2347 2348 #define QEDF_SIMD_HANDLER_NUM 0 2349 static void qedf_sync_free_irqs(struct qedf_ctx *qedf) 2350 { 2351 int i; 2352 u16 vector_idx = 0; 2353 u32 vector; 2354 2355 if (qedf->int_info.msix_cnt) { 2356 for (i = 0; i < qedf->int_info.used_cnt; i++) { 2357 vector_idx = i * qedf->dev_info.common.num_hwfns + 2358 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2359 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2360 "Freeing IRQ #%d vector_idx=%d.\n", 2361 i, vector_idx); 2362 vector = qedf->int_info.msix[vector_idx].vector; 2363 synchronize_irq(vector); 2364 irq_set_affinity_hint(vector, NULL); 2365 irq_set_affinity_notifier(vector, NULL); 2366 free_irq(vector, &qedf->fp_array[i]); 2367 } 2368 } else 2369 qed_ops->common->simd_handler_clean(qedf->cdev, 2370 QEDF_SIMD_HANDLER_NUM); 2371 2372 qedf->int_info.used_cnt = 0; 2373 qed_ops->common->set_fp_int(qedf->cdev, 0); 2374 } 2375 2376 static int qedf_request_msix_irq(struct qedf_ctx *qedf) 2377 { 2378 int i, rc, cpu; 2379 u16 vector_idx = 0; 2380 u32 vector; 2381 2382 cpu = cpumask_first(cpu_online_mask); 2383 for (i = 0; i < qedf->num_queues; i++) { 2384 vector_idx = i * qedf->dev_info.common.num_hwfns + 2385 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2386 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2387 "Requesting IRQ #%d vector_idx=%d.\n", 2388 i, vector_idx); 2389 vector = qedf->int_info.msix[vector_idx].vector; 2390 rc = request_irq(vector, qedf_msix_handler, 0, "qedf", 2391 &qedf->fp_array[i]); 2392 2393 if (rc) { 2394 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n"); 2395 qedf_sync_free_irqs(qedf); 2396 return rc; 2397 } 2398 2399 qedf->int_info.used_cnt++; 2400 rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu)); 2401 cpu = cpumask_next(cpu, cpu_online_mask); 2402 } 2403 2404 return 0; 2405 } 2406 2407 static int qedf_setup_int(struct qedf_ctx *qedf) 2408 { 2409 int rc = 0; 2410 2411 /* 2412 * Learn interrupt configuration 2413 */ 2414 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus()); 2415 if (rc <= 0) 2416 return 0; 2417 2418 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info); 2419 if (rc) 2420 return 0; 2421 2422 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = " 2423 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt, 2424 num_online_cpus()); 2425 2426 if (qedf->int_info.msix_cnt) 2427 return qedf_request_msix_irq(qedf); 2428 2429 qed_ops->common->simd_handler_config(qedf->cdev, &qedf, 2430 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler); 2431 qedf->int_info.used_cnt = 1; 2432 2433 QEDF_ERR(&qedf->dbg_ctx, 2434 "Cannot load driver due to a lack of MSI-X vectors.\n"); 2435 return -EINVAL; 2436 } 2437 2438 /* Main function for libfc frame reception */ 2439 static void qedf_recv_frame(struct qedf_ctx *qedf, 2440 struct sk_buff *skb) 2441 { 2442 u32 fr_len; 2443 struct fc_lport *lport; 2444 struct fc_frame_header *fh; 2445 struct fcoe_crc_eof crc_eof; 2446 struct fc_frame *fp; 2447 u8 *mac = NULL; 2448 u8 *dest_mac = NULL; 2449 struct fcoe_hdr *hp; 2450 struct qedf_rport *fcport; 2451 struct fc_lport *vn_port; 2452 u32 f_ctl; 2453 2454 lport = qedf->lport; 2455 if (lport == NULL || lport->state == LPORT_ST_DISABLED) { 2456 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n"); 2457 kfree_skb(skb); 2458 return; 2459 } 2460 2461 if (skb_is_nonlinear(skb)) 2462 skb_linearize(skb); 2463 mac = eth_hdr(skb)->h_source; 2464 dest_mac = eth_hdr(skb)->h_dest; 2465 2466 /* Pull the header */ 2467 hp = (struct fcoe_hdr *)skb->data; 2468 fh = (struct fc_frame_header *) skb_transport_header(skb); 2469 skb_pull(skb, sizeof(struct fcoe_hdr)); 2470 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 2471 2472 fp = (struct fc_frame *)skb; 2473 fc_frame_init(fp); 2474 fr_dev(fp) = lport; 2475 fr_sof(fp) = hp->fcoe_sof; 2476 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 2477 QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n"); 2478 kfree_skb(skb); 2479 return; 2480 } 2481 fr_eof(fp) = crc_eof.fcoe_eof; 2482 fr_crc(fp) = crc_eof.fcoe_crc32; 2483 if (pskb_trim(skb, fr_len)) { 2484 QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n"); 2485 kfree_skb(skb); 2486 return; 2487 } 2488 2489 fh = fc_frame_header_get(fp); 2490 2491 /* 2492 * Invalid frame filters. 2493 */ 2494 2495 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 2496 fh->fh_type == FC_TYPE_FCP) { 2497 /* Drop FCP data. We dont this in L2 path */ 2498 kfree_skb(skb); 2499 return; 2500 } 2501 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 2502 fh->fh_type == FC_TYPE_ELS) { 2503 switch (fc_frame_payload_op(fp)) { 2504 case ELS_LOGO: 2505 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 2506 /* drop non-FIP LOGO */ 2507 kfree_skb(skb); 2508 return; 2509 } 2510 break; 2511 } 2512 } 2513 2514 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 2515 /* Drop incoming ABTS */ 2516 kfree_skb(skb); 2517 return; 2518 } 2519 2520 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { 2521 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2522 "FC frame d_id mismatch with MAC %pM.\n", dest_mac); 2523 kfree_skb(skb); 2524 return; 2525 } 2526 2527 if (qedf->ctlr.state) { 2528 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) { 2529 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2530 "Wrong source address: mac:%pM dest_addr:%pM.\n", 2531 mac, qedf->ctlr.dest_addr); 2532 kfree_skb(skb); 2533 return; 2534 } 2535 } 2536 2537 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 2538 2539 /* 2540 * If the destination ID from the frame header does not match what we 2541 * have on record for lport and the search for a NPIV port came up 2542 * empty then this is not addressed to our port so simply drop it. 2543 */ 2544 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { 2545 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2546 "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n", 2547 lport->port_id, ntoh24(fh->fh_d_id)); 2548 kfree_skb(skb); 2549 return; 2550 } 2551 2552 f_ctl = ntoh24(fh->fh_f_ctl); 2553 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) && 2554 (f_ctl & FC_FC_EX_CTX)) { 2555 /* Drop incoming ABTS response that has both SEQ/EX CTX set */ 2556 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2557 "Dropping ABTS response as both SEQ/EX CTX set.\n"); 2558 kfree_skb(skb); 2559 return; 2560 } 2561 2562 /* 2563 * If a connection is uploading, drop incoming FCoE frames as there 2564 * is a small window where we could try to return a frame while libfc 2565 * is trying to clean things up. 2566 */ 2567 2568 /* Get fcport associated with d_id if it exists */ 2569 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 2570 2571 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 2572 &fcport->flags)) { 2573 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2574 "Connection uploading, dropping fp=%p.\n", fp); 2575 kfree_skb(skb); 2576 return; 2577 } 2578 2579 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: " 2580 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp, 2581 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, 2582 fh->fh_type); 2583 if (qedf_dump_frames) 2584 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 2585 1, skb->data, skb->len, false); 2586 fc_exch_recv(lport, fp); 2587 } 2588 2589 static void qedf_ll2_process_skb(struct work_struct *work) 2590 { 2591 struct qedf_skb_work *skb_work = 2592 container_of(work, struct qedf_skb_work, work); 2593 struct qedf_ctx *qedf = skb_work->qedf; 2594 struct sk_buff *skb = skb_work->skb; 2595 struct ethhdr *eh; 2596 2597 if (!qedf) { 2598 QEDF_ERR(NULL, "qedf is NULL\n"); 2599 goto err_out; 2600 } 2601 2602 eh = (struct ethhdr *)skb->data; 2603 2604 /* Undo VLAN encapsulation */ 2605 if (eh->h_proto == htons(ETH_P_8021Q)) { 2606 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); 2607 eh = skb_pull(skb, VLAN_HLEN); 2608 skb_reset_mac_header(skb); 2609 } 2610 2611 /* 2612 * Process either a FIP frame or FCoE frame based on the 2613 * protocol value. If it's not either just drop the 2614 * frame. 2615 */ 2616 if (eh->h_proto == htons(ETH_P_FIP)) { 2617 qedf_fip_recv(qedf, skb); 2618 goto out; 2619 } else if (eh->h_proto == htons(ETH_P_FCOE)) { 2620 __skb_pull(skb, ETH_HLEN); 2621 qedf_recv_frame(qedf, skb); 2622 goto out; 2623 } else 2624 goto err_out; 2625 2626 err_out: 2627 kfree_skb(skb); 2628 out: 2629 kfree(skb_work); 2630 return; 2631 } 2632 2633 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb, 2634 u32 arg1, u32 arg2) 2635 { 2636 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2637 struct qedf_skb_work *skb_work; 2638 2639 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 2640 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2641 "Dropping frame as link state is down.\n"); 2642 kfree_skb(skb); 2643 return 0; 2644 } 2645 2646 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC); 2647 if (!skb_work) { 2648 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so " 2649 "dropping frame.\n"); 2650 kfree_skb(skb); 2651 return 0; 2652 } 2653 2654 INIT_WORK(&skb_work->work, qedf_ll2_process_skb); 2655 skb_work->skb = skb; 2656 skb_work->qedf = qedf; 2657 queue_work(qedf->ll2_recv_wq, &skb_work->work); 2658 2659 return 0; 2660 } 2661 2662 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = { 2663 .rx_cb = qedf_ll2_rx, 2664 .tx_cb = NULL, 2665 }; 2666 2667 /* Main thread to process I/O completions */ 2668 void qedf_fp_io_handler(struct work_struct *work) 2669 { 2670 struct qedf_io_work *io_work = 2671 container_of(work, struct qedf_io_work, work); 2672 u32 comp_type; 2673 2674 /* 2675 * Deferred part of unsolicited CQE sends 2676 * frame to libfc. 2677 */ 2678 comp_type = (io_work->cqe.cqe_data >> 2679 FCOE_CQE_CQE_TYPE_SHIFT) & 2680 FCOE_CQE_CQE_TYPE_MASK; 2681 if (comp_type == FCOE_UNSOLIC_CQE_TYPE && 2682 io_work->fp) 2683 fc_exch_recv(io_work->qedf->lport, io_work->fp); 2684 else 2685 qedf_process_cqe(io_work->qedf, &io_work->cqe); 2686 2687 kfree(io_work); 2688 } 2689 2690 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf, 2691 struct qed_sb_info *sb_info, u16 sb_id) 2692 { 2693 struct status_block *sb_virt; 2694 dma_addr_t sb_phys; 2695 int ret; 2696 2697 sb_virt = dma_alloc_coherent(&qedf->pdev->dev, 2698 sizeof(struct status_block), &sb_phys, GFP_KERNEL); 2699 2700 if (!sb_virt) { 2701 QEDF_ERR(&qedf->dbg_ctx, 2702 "Status block allocation failed for id = %d.\n", 2703 sb_id); 2704 return -ENOMEM; 2705 } 2706 2707 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys, 2708 sb_id, QED_SB_TYPE_STORAGE); 2709 2710 if (ret) { 2711 QEDF_ERR(&qedf->dbg_ctx, 2712 "Status block initialization failed (0x%x) for id = %d.\n", 2713 ret, sb_id); 2714 return ret; 2715 } 2716 2717 return 0; 2718 } 2719 2720 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info) 2721 { 2722 if (sb_info->sb_virt) 2723 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt), 2724 (void *)sb_info->sb_virt, sb_info->sb_phys); 2725 } 2726 2727 static void qedf_destroy_sb(struct qedf_ctx *qedf) 2728 { 2729 int id; 2730 struct qedf_fastpath *fp = NULL; 2731 2732 for (id = 0; id < qedf->num_queues; id++) { 2733 fp = &(qedf->fp_array[id]); 2734 if (fp->sb_id == QEDF_SB_ID_NULL) 2735 break; 2736 qedf_free_sb(qedf, fp->sb_info); 2737 kfree(fp->sb_info); 2738 } 2739 kfree(qedf->fp_array); 2740 } 2741 2742 static int qedf_prepare_sb(struct qedf_ctx *qedf) 2743 { 2744 int id; 2745 struct qedf_fastpath *fp; 2746 int ret; 2747 2748 qedf->fp_array = 2749 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath), 2750 GFP_KERNEL); 2751 2752 if (!qedf->fp_array) { 2753 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation " 2754 "failed.\n"); 2755 return -ENOMEM; 2756 } 2757 2758 for (id = 0; id < qedf->num_queues; id++) { 2759 fp = &(qedf->fp_array[id]); 2760 fp->sb_id = QEDF_SB_ID_NULL; 2761 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL); 2762 if (!fp->sb_info) { 2763 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct " 2764 "allocation failed.\n"); 2765 goto err; 2766 } 2767 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id); 2768 if (ret) { 2769 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and " 2770 "initialization failed.\n"); 2771 goto err; 2772 } 2773 fp->sb_id = id; 2774 fp->qedf = qedf; 2775 fp->cq_num_entries = 2776 qedf->global_queues[id]->cq_mem_size / 2777 sizeof(struct fcoe_cqe); 2778 } 2779 err: 2780 return 0; 2781 } 2782 2783 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe) 2784 { 2785 u16 xid; 2786 struct qedf_ioreq *io_req; 2787 struct qedf_rport *fcport; 2788 u32 comp_type; 2789 2790 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2791 FCOE_CQE_CQE_TYPE_MASK; 2792 2793 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2794 io_req = &qedf->cmd_mgr->cmds[xid]; 2795 2796 /* Completion not for a valid I/O anymore so just return */ 2797 if (!io_req) { 2798 QEDF_ERR(&qedf->dbg_ctx, 2799 "io_req is NULL for xid=0x%x.\n", xid); 2800 return; 2801 } 2802 2803 fcport = io_req->fcport; 2804 2805 if (fcport == NULL) { 2806 QEDF_ERR(&qedf->dbg_ctx, 2807 "fcport is NULL for xid=0x%x io_req=%p.\n", 2808 xid, io_req); 2809 return; 2810 } 2811 2812 /* 2813 * Check that fcport is offloaded. If it isn't then the spinlock 2814 * isn't valid and shouldn't be taken. We should just return. 2815 */ 2816 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 2817 QEDF_ERR(&qedf->dbg_ctx, 2818 "Session not offloaded yet, fcport = %p.\n", fcport); 2819 return; 2820 } 2821 2822 2823 switch (comp_type) { 2824 case FCOE_GOOD_COMPLETION_CQE_TYPE: 2825 atomic_inc(&fcport->free_sqes); 2826 switch (io_req->cmd_type) { 2827 case QEDF_SCSI_CMD: 2828 qedf_scsi_completion(qedf, cqe, io_req); 2829 break; 2830 case QEDF_ELS: 2831 qedf_process_els_compl(qedf, cqe, io_req); 2832 break; 2833 case QEDF_TASK_MGMT_CMD: 2834 qedf_process_tmf_compl(qedf, cqe, io_req); 2835 break; 2836 case QEDF_SEQ_CLEANUP: 2837 qedf_process_seq_cleanup_compl(qedf, cqe, io_req); 2838 break; 2839 } 2840 break; 2841 case FCOE_ERROR_DETECTION_CQE_TYPE: 2842 atomic_inc(&fcport->free_sqes); 2843 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2844 "Error detect CQE.\n"); 2845 qedf_process_error_detect(qedf, cqe, io_req); 2846 break; 2847 case FCOE_EXCH_CLEANUP_CQE_TYPE: 2848 atomic_inc(&fcport->free_sqes); 2849 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2850 "Cleanup CQE.\n"); 2851 qedf_process_cleanup_compl(qedf, cqe, io_req); 2852 break; 2853 case FCOE_ABTS_CQE_TYPE: 2854 atomic_inc(&fcport->free_sqes); 2855 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2856 "Abort CQE.\n"); 2857 qedf_process_abts_compl(qedf, cqe, io_req); 2858 break; 2859 case FCOE_DUMMY_CQE_TYPE: 2860 atomic_inc(&fcport->free_sqes); 2861 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2862 "Dummy CQE.\n"); 2863 break; 2864 case FCOE_LOCAL_COMP_CQE_TYPE: 2865 atomic_inc(&fcport->free_sqes); 2866 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2867 "Local completion CQE.\n"); 2868 break; 2869 case FCOE_WARNING_CQE_TYPE: 2870 atomic_inc(&fcport->free_sqes); 2871 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2872 "Warning CQE.\n"); 2873 qedf_process_warning_compl(qedf, cqe, io_req); 2874 break; 2875 case MAX_FCOE_CQE_TYPE: 2876 atomic_inc(&fcport->free_sqes); 2877 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2878 "Max FCoE CQE.\n"); 2879 break; 2880 default: 2881 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2882 "Default CQE.\n"); 2883 break; 2884 } 2885 } 2886 2887 static void qedf_free_bdq(struct qedf_ctx *qedf) 2888 { 2889 int i; 2890 2891 if (qedf->bdq_pbl_list) 2892 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE, 2893 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma); 2894 2895 if (qedf->bdq_pbl) 2896 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size, 2897 qedf->bdq_pbl, qedf->bdq_pbl_dma); 2898 2899 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2900 if (qedf->bdq[i].buf_addr) { 2901 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE, 2902 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma); 2903 } 2904 } 2905 } 2906 2907 static void qedf_free_global_queues(struct qedf_ctx *qedf) 2908 { 2909 int i; 2910 struct global_queue **gl = qedf->global_queues; 2911 2912 for (i = 0; i < qedf->num_queues; i++) { 2913 if (!gl[i]) 2914 continue; 2915 2916 if (gl[i]->cq) 2917 dma_free_coherent(&qedf->pdev->dev, 2918 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma); 2919 if (gl[i]->cq_pbl) 2920 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size, 2921 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 2922 2923 kfree(gl[i]); 2924 } 2925 2926 qedf_free_bdq(qedf); 2927 } 2928 2929 static int qedf_alloc_bdq(struct qedf_ctx *qedf) 2930 { 2931 int i; 2932 struct scsi_bd *pbl; 2933 u64 *list; 2934 dma_addr_t page; 2935 2936 /* Alloc dma memory for BDQ buffers */ 2937 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2938 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev, 2939 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL); 2940 if (!qedf->bdq[i].buf_addr) { 2941 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ " 2942 "buffer %d.\n", i); 2943 return -ENOMEM; 2944 } 2945 } 2946 2947 /* Alloc dma memory for BDQ page buffer list */ 2948 qedf->bdq_pbl_mem_size = 2949 QEDF_BDQ_SIZE * sizeof(struct scsi_bd); 2950 qedf->bdq_pbl_mem_size = 2951 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE); 2952 2953 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 2954 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL); 2955 if (!qedf->bdq_pbl) { 2956 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n"); 2957 return -ENOMEM; 2958 } 2959 2960 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2961 "BDQ PBL addr=0x%p dma=%pad\n", 2962 qedf->bdq_pbl, &qedf->bdq_pbl_dma); 2963 2964 /* 2965 * Populate BDQ PBL with physical and virtual address of individual 2966 * BDQ buffers 2967 */ 2968 pbl = (struct scsi_bd *)qedf->bdq_pbl; 2969 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2970 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma)); 2971 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma)); 2972 pbl->opaque.fcoe_opaque.hi = 0; 2973 /* Opaque lo data is an index into the BDQ array */ 2974 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i); 2975 pbl++; 2976 } 2977 2978 /* Allocate list of PBL pages */ 2979 qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev, 2980 QEDF_PAGE_SIZE, 2981 &qedf->bdq_pbl_list_dma, 2982 GFP_KERNEL); 2983 if (!qedf->bdq_pbl_list) { 2984 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n"); 2985 return -ENOMEM; 2986 } 2987 2988 /* 2989 * Now populate PBL list with pages that contain pointers to the 2990 * individual buffers. 2991 */ 2992 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size / 2993 QEDF_PAGE_SIZE; 2994 list = (u64 *)qedf->bdq_pbl_list; 2995 page = qedf->bdq_pbl_list_dma; 2996 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) { 2997 *list = qedf->bdq_pbl_dma; 2998 list++; 2999 page += QEDF_PAGE_SIZE; 3000 } 3001 3002 return 0; 3003 } 3004 3005 static int qedf_alloc_global_queues(struct qedf_ctx *qedf) 3006 { 3007 u32 *list; 3008 int i; 3009 int status; 3010 u32 *pbl; 3011 dma_addr_t page; 3012 int num_pages; 3013 3014 /* Allocate and map CQs, RQs */ 3015 /* 3016 * Number of global queues (CQ / RQ). This should 3017 * be <= number of available MSIX vectors for the PF 3018 */ 3019 if (!qedf->num_queues) { 3020 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n"); 3021 return -ENOMEM; 3022 } 3023 3024 /* 3025 * Make sure we allocated the PBL that will contain the physical 3026 * addresses of our queues 3027 */ 3028 if (!qedf->p_cpuq) { 3029 status = -EINVAL; 3030 QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n"); 3031 goto mem_alloc_failure; 3032 } 3033 3034 qedf->global_queues = kzalloc((sizeof(struct global_queue *) 3035 * qedf->num_queues), GFP_KERNEL); 3036 if (!qedf->global_queues) { 3037 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global " 3038 "queues array ptr memory\n"); 3039 return -ENOMEM; 3040 } 3041 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3042 "qedf->global_queues=%p.\n", qedf->global_queues); 3043 3044 /* Allocate DMA coherent buffers for BDQ */ 3045 status = qedf_alloc_bdq(qedf); 3046 if (status) { 3047 QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n"); 3048 goto mem_alloc_failure; 3049 } 3050 3051 /* Allocate a CQ and an associated PBL for each MSI-X vector */ 3052 for (i = 0; i < qedf->num_queues; i++) { 3053 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue), 3054 GFP_KERNEL); 3055 if (!qedf->global_queues[i]) { 3056 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate " 3057 "global queue %d.\n", i); 3058 status = -ENOMEM; 3059 goto mem_alloc_failure; 3060 } 3061 3062 qedf->global_queues[i]->cq_mem_size = 3063 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3064 qedf->global_queues[i]->cq_mem_size = 3065 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE); 3066 3067 qedf->global_queues[i]->cq_pbl_size = 3068 (qedf->global_queues[i]->cq_mem_size / 3069 PAGE_SIZE) * sizeof(void *); 3070 qedf->global_queues[i]->cq_pbl_size = 3071 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE); 3072 3073 qedf->global_queues[i]->cq = 3074 dma_alloc_coherent(&qedf->pdev->dev, 3075 qedf->global_queues[i]->cq_mem_size, 3076 &qedf->global_queues[i]->cq_dma, 3077 GFP_KERNEL); 3078 3079 if (!qedf->global_queues[i]->cq) { 3080 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n"); 3081 status = -ENOMEM; 3082 goto mem_alloc_failure; 3083 } 3084 3085 qedf->global_queues[i]->cq_pbl = 3086 dma_alloc_coherent(&qedf->pdev->dev, 3087 qedf->global_queues[i]->cq_pbl_size, 3088 &qedf->global_queues[i]->cq_pbl_dma, 3089 GFP_KERNEL); 3090 3091 if (!qedf->global_queues[i]->cq_pbl) { 3092 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n"); 3093 status = -ENOMEM; 3094 goto mem_alloc_failure; 3095 } 3096 3097 /* Create PBL */ 3098 num_pages = qedf->global_queues[i]->cq_mem_size / 3099 QEDF_PAGE_SIZE; 3100 page = qedf->global_queues[i]->cq_dma; 3101 pbl = (u32 *)qedf->global_queues[i]->cq_pbl; 3102 3103 while (num_pages--) { 3104 *pbl = U64_LO(page); 3105 pbl++; 3106 *pbl = U64_HI(page); 3107 pbl++; 3108 page += QEDF_PAGE_SIZE; 3109 } 3110 /* Set the initial consumer index for cq */ 3111 qedf->global_queues[i]->cq_cons_idx = 0; 3112 } 3113 3114 list = (u32 *)qedf->p_cpuq; 3115 3116 /* 3117 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 3118 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 3119 * to the physical address which contains an array of pointers to 3120 * the physical addresses of the specific queue pages. 3121 */ 3122 for (i = 0; i < qedf->num_queues; i++) { 3123 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma); 3124 list++; 3125 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma); 3126 list++; 3127 *list = U64_LO(0); 3128 list++; 3129 *list = U64_HI(0); 3130 list++; 3131 } 3132 3133 return 0; 3134 3135 mem_alloc_failure: 3136 qedf_free_global_queues(qedf); 3137 return status; 3138 } 3139 3140 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf) 3141 { 3142 u8 sq_num_pbl_pages; 3143 u32 sq_mem_size; 3144 u32 cq_mem_size; 3145 u32 cq_num_entries; 3146 int rval; 3147 3148 /* 3149 * The number of completion queues/fastpath interrupts/status blocks 3150 * we allocation is the minimum off: 3151 * 3152 * Number of CPUs 3153 * Number allocated by qed for our PCI function 3154 */ 3155 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf); 3156 3157 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n", 3158 qedf->num_queues); 3159 3160 qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev, 3161 qedf->num_queues * sizeof(struct qedf_glbl_q_params), 3162 &qedf->hw_p_cpuq, GFP_KERNEL); 3163 3164 if (!qedf->p_cpuq) { 3165 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n"); 3166 return 1; 3167 } 3168 3169 rval = qedf_alloc_global_queues(qedf); 3170 if (rval) { 3171 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation " 3172 "failed.\n"); 3173 return 1; 3174 } 3175 3176 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */ 3177 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 3178 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE); 3179 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE); 3180 3181 /* Calculate CQ num entries */ 3182 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3183 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE); 3184 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe); 3185 3186 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params)); 3187 3188 /* Setup the value for fcoe PF */ 3189 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS; 3190 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS; 3191 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr = 3192 (u64)qedf->hw_p_cpuq; 3193 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages; 3194 3195 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0; 3196 3197 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries; 3198 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues; 3199 3200 /* log_page_size: 12 for 4KB pages */ 3201 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE); 3202 3203 qedf->pf_params.fcoe_pf_params.mtu = 9000; 3204 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI; 3205 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI; 3206 3207 /* BDQ address and size */ 3208 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] = 3209 qedf->bdq_pbl_list_dma; 3210 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] = 3211 qedf->bdq_pbl_list_num_entries; 3212 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE; 3213 3214 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3215 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n", 3216 qedf->bdq_pbl_list, 3217 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0], 3218 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]); 3219 3220 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3221 "cq_num_entries=%d.\n", 3222 qedf->pf_params.fcoe_pf_params.cq_num_entries); 3223 3224 return 0; 3225 } 3226 3227 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 3228 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf) 3229 { 3230 size_t size = 0; 3231 3232 if (qedf->p_cpuq) { 3233 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params); 3234 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq, 3235 qedf->hw_p_cpuq); 3236 } 3237 3238 qedf_free_global_queues(qedf); 3239 3240 kfree(qedf->global_queues); 3241 } 3242 3243 /* 3244 * PCI driver functions 3245 */ 3246 3247 static const struct pci_device_id qedf_pci_tbl[] = { 3248 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) }, 3249 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) }, 3250 {0} 3251 }; 3252 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl); 3253 3254 static struct pci_driver qedf_pci_driver = { 3255 .name = QEDF_MODULE_NAME, 3256 .id_table = qedf_pci_tbl, 3257 .probe = qedf_probe, 3258 .remove = qedf_remove, 3259 .shutdown = qedf_shutdown, 3260 }; 3261 3262 static int __qedf_probe(struct pci_dev *pdev, int mode) 3263 { 3264 int rc = -EINVAL; 3265 struct fc_lport *lport; 3266 struct qedf_ctx *qedf = NULL; 3267 struct Scsi_Host *host; 3268 bool is_vf = false; 3269 struct qed_ll2_params params; 3270 char host_buf[20]; 3271 struct qed_link_params link_params; 3272 int status; 3273 void *task_start, *task_end; 3274 struct qed_slowpath_params slowpath_params; 3275 struct qed_probe_params qed_params; 3276 u16 retry_cnt = 10; 3277 3278 /* 3279 * When doing error recovery we didn't reap the lport so don't try 3280 * to reallocate it. 3281 */ 3282 retry_probe: 3283 if (mode == QEDF_MODE_RECOVERY) 3284 msleep(2000); 3285 3286 if (mode != QEDF_MODE_RECOVERY) { 3287 lport = libfc_host_alloc(&qedf_host_template, 3288 sizeof(struct qedf_ctx)); 3289 3290 if (!lport) { 3291 QEDF_ERR(NULL, "Could not allocate lport.\n"); 3292 rc = -ENOMEM; 3293 goto err0; 3294 } 3295 3296 fc_disc_init(lport); 3297 3298 /* Initialize qedf_ctx */ 3299 qedf = lport_priv(lport); 3300 set_bit(QEDF_PROBING, &qedf->flags); 3301 qedf->lport = lport; 3302 qedf->ctlr.lp = lport; 3303 qedf->pdev = pdev; 3304 qedf->dbg_ctx.pdev = pdev; 3305 qedf->dbg_ctx.host_no = lport->host->host_no; 3306 spin_lock_init(&qedf->hba_lock); 3307 INIT_LIST_HEAD(&qedf->fcports); 3308 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1; 3309 atomic_set(&qedf->num_offloads, 0); 3310 qedf->stop_io_on_error = false; 3311 pci_set_drvdata(pdev, qedf); 3312 init_completion(&qedf->fipvlan_compl); 3313 mutex_init(&qedf->stats_mutex); 3314 mutex_init(&qedf->flush_mutex); 3315 qedf->flogi_pending = 0; 3316 3317 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, 3318 "QLogic FastLinQ FCoE Module qedf %s, " 3319 "FW %d.%d.%d.%d\n", QEDF_VERSION, 3320 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 3321 FW_ENGINEERING_VERSION); 3322 } else { 3323 /* Init pointers during recovery */ 3324 qedf = pci_get_drvdata(pdev); 3325 set_bit(QEDF_PROBING, &qedf->flags); 3326 lport = qedf->lport; 3327 } 3328 3329 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n"); 3330 3331 host = lport->host; 3332 3333 /* Allocate mempool for qedf_io_work structs */ 3334 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN, 3335 qedf_io_work_cache); 3336 if (qedf->io_mempool == NULL) { 3337 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n"); 3338 goto err1; 3339 } 3340 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n", 3341 qedf->io_mempool); 3342 3343 sprintf(host_buf, "qedf_%u_link", 3344 qedf->lport->host->host_no); 3345 qedf->link_update_wq = create_workqueue(host_buf); 3346 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update); 3347 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery); 3348 INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump); 3349 INIT_DELAYED_WORK(&qedf->stag_work, qedf_stag_change_work); 3350 qedf->fipvlan_retries = qedf_fipvlan_retries; 3351 /* Set a default prio in case DCBX doesn't converge */ 3352 if (qedf_default_prio > -1) { 3353 /* 3354 * This is the case where we pass a modparam in so we want to 3355 * honor it even if dcbx doesn't converge. 3356 */ 3357 qedf->prio = qedf_default_prio; 3358 } else 3359 qedf->prio = QEDF_DEFAULT_PRIO; 3360 3361 /* 3362 * Common probe. Takes care of basic hardware init and pci_* 3363 * functions. 3364 */ 3365 memset(&qed_params, 0, sizeof(qed_params)); 3366 qed_params.protocol = QED_PROTOCOL_FCOE; 3367 qed_params.dp_module = qedf_dp_module; 3368 qed_params.dp_level = qedf_dp_level; 3369 qed_params.is_vf = is_vf; 3370 qedf->cdev = qed_ops->common->probe(pdev, &qed_params); 3371 if (!qedf->cdev) { 3372 if ((mode == QEDF_MODE_RECOVERY) && retry_cnt) { 3373 QEDF_ERR(&qedf->dbg_ctx, 3374 "Retry %d initialize hardware\n", retry_cnt); 3375 retry_cnt--; 3376 goto retry_probe; 3377 } 3378 QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n"); 3379 rc = -ENODEV; 3380 goto err1; 3381 } 3382 3383 /* Learn information crucial for qedf to progress */ 3384 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3385 if (rc) { 3386 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n"); 3387 goto err1; 3388 } 3389 3390 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 3391 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n", 3392 qedf->dev_info.common.num_hwfns, 3393 qed_ops->common->get_affin_hwfn_idx(qedf->cdev)); 3394 3395 /* queue allocation code should come here 3396 * order should be 3397 * slowpath_start 3398 * status block allocation 3399 * interrupt registration (to get min number of queues) 3400 * set_fcoe_pf_param 3401 * qed_sp_fcoe_func_start 3402 */ 3403 rc = qedf_set_fcoe_pf_param(qedf); 3404 if (rc) { 3405 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n"); 3406 goto err2; 3407 } 3408 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3409 3410 /* Learn information crucial for qedf to progress */ 3411 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3412 if (rc) { 3413 QEDF_ERR(&qedf->dbg_ctx, "Failed to fill dev info.\n"); 3414 goto err2; 3415 } 3416 3417 if (mode != QEDF_MODE_RECOVERY) { 3418 qedf->devlink = qed_ops->common->devlink_register(qedf->cdev); 3419 if (IS_ERR(qedf->devlink)) { 3420 QEDF_ERR(&qedf->dbg_ctx, "Cannot register devlink\n"); 3421 rc = PTR_ERR(qedf->devlink); 3422 qedf->devlink = NULL; 3423 goto err2; 3424 } 3425 } 3426 3427 /* Record BDQ producer doorbell addresses */ 3428 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr; 3429 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr; 3430 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3431 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod, 3432 qedf->bdq_secondary_prod); 3433 3434 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf); 3435 3436 rc = qedf_prepare_sb(qedf); 3437 if (rc) { 3438 3439 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3440 goto err2; 3441 } 3442 3443 /* Start the Slowpath-process */ 3444 slowpath_params.int_mode = QED_INT_MODE_MSIX; 3445 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER; 3446 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER; 3447 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER; 3448 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER; 3449 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE); 3450 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params); 3451 if (rc) { 3452 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3453 goto err2; 3454 } 3455 3456 /* 3457 * update_pf_params needs to be called before and after slowpath 3458 * start 3459 */ 3460 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3461 3462 /* Setup interrupts */ 3463 rc = qedf_setup_int(qedf); 3464 if (rc) { 3465 QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n"); 3466 goto err3; 3467 } 3468 3469 rc = qed_ops->start(qedf->cdev, &qedf->tasks); 3470 if (rc) { 3471 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n"); 3472 goto err4; 3473 } 3474 task_start = qedf_get_task_mem(&qedf->tasks, 0); 3475 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1); 3476 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, " 3477 "end=%p block_size=%u.\n", task_start, task_end, 3478 qedf->tasks.size); 3479 3480 /* 3481 * We need to write the number of BDs in the BDQ we've preallocated so 3482 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 3483 * packet arrives. 3484 */ 3485 qedf->bdq_prod_idx = QEDF_BDQ_SIZE; 3486 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3487 "Writing %d to primary and secondary BDQ doorbell registers.\n", 3488 qedf->bdq_prod_idx); 3489 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod); 3490 readw(qedf->bdq_primary_prod); 3491 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod); 3492 readw(qedf->bdq_secondary_prod); 3493 3494 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3495 3496 /* Now that the dev_info struct has been filled in set the MAC 3497 * address 3498 */ 3499 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac); 3500 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n", 3501 qedf->mac); 3502 3503 /* 3504 * Set the WWNN and WWPN in the following way: 3505 * 3506 * If the info we get from qed is non-zero then use that to set the 3507 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based 3508 * on the MAC address. 3509 */ 3510 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) { 3511 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3512 "Setting WWPN and WWNN from qed dev_info.\n"); 3513 qedf->wwnn = qedf->dev_info.wwnn; 3514 qedf->wwpn = qedf->dev_info.wwpn; 3515 } else { 3516 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3517 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n"); 3518 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0); 3519 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0); 3520 } 3521 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx " 3522 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn); 3523 3524 sprintf(host_buf, "host_%d", host->host_no); 3525 qed_ops->common->set_name(qedf->cdev, host_buf); 3526 3527 /* Allocate cmd mgr */ 3528 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf); 3529 if (!qedf->cmd_mgr) { 3530 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n"); 3531 rc = -ENOMEM; 3532 goto err5; 3533 } 3534 3535 if (mode != QEDF_MODE_RECOVERY) { 3536 host->transportt = qedf_fc_transport_template; 3537 host->max_lun = qedf_max_lun; 3538 host->max_cmd_len = QEDF_MAX_CDB_LEN; 3539 host->max_id = QEDF_MAX_SESSIONS; 3540 host->can_queue = FCOE_PARAMS_NUM_TASKS; 3541 rc = scsi_add_host(host, &pdev->dev); 3542 if (rc) { 3543 QEDF_WARN(&qedf->dbg_ctx, 3544 "Error adding Scsi_Host rc=0x%x.\n", rc); 3545 goto err6; 3546 } 3547 } 3548 3549 memset(¶ms, 0, sizeof(params)); 3550 params.mtu = QEDF_LL2_BUF_SIZE; 3551 ether_addr_copy(params.ll2_mac_address, qedf->mac); 3552 3553 /* Start LL2 processing thread */ 3554 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no); 3555 qedf->ll2_recv_wq = 3556 create_workqueue(host_buf); 3557 if (!qedf->ll2_recv_wq) { 3558 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n"); 3559 rc = -ENOMEM; 3560 goto err7; 3561 } 3562 3563 #ifdef CONFIG_DEBUG_FS 3564 qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops, 3565 qedf_dbg_fops); 3566 #endif 3567 3568 /* Start LL2 */ 3569 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf); 3570 rc = qed_ops->ll2->start(qedf->cdev, ¶ms); 3571 if (rc) { 3572 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n"); 3573 goto err7; 3574 } 3575 set_bit(QEDF_LL2_STARTED, &qedf->flags); 3576 3577 /* Set initial FIP/FCoE VLAN to NULL */ 3578 qedf->vlan_id = 0; 3579 3580 /* 3581 * No need to setup fcoe_ctlr or fc_lport objects during recovery since 3582 * they were not reaped during the unload process. 3583 */ 3584 if (mode != QEDF_MODE_RECOVERY) { 3585 /* Setup imbedded fcoe controller */ 3586 qedf_fcoe_ctlr_setup(qedf); 3587 3588 /* Setup lport */ 3589 rc = qedf_lport_setup(qedf); 3590 if (rc) { 3591 QEDF_ERR(&(qedf->dbg_ctx), 3592 "qedf_lport_setup failed.\n"); 3593 goto err7; 3594 } 3595 } 3596 3597 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no); 3598 qedf->timer_work_queue = 3599 create_workqueue(host_buf); 3600 if (!qedf->timer_work_queue) { 3601 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer " 3602 "workqueue.\n"); 3603 rc = -ENOMEM; 3604 goto err7; 3605 } 3606 3607 /* DPC workqueue is not reaped during recovery unload */ 3608 if (mode != QEDF_MODE_RECOVERY) { 3609 sprintf(host_buf, "qedf_%u_dpc", 3610 qedf->lport->host->host_no); 3611 qedf->dpc_wq = create_workqueue(host_buf); 3612 } 3613 INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler); 3614 3615 /* 3616 * GRC dump and sysfs parameters are not reaped during the recovery 3617 * unload process. 3618 */ 3619 if (mode != QEDF_MODE_RECOVERY) { 3620 qedf->grcdump_size = 3621 qed_ops->common->dbg_all_data_size(qedf->cdev); 3622 if (qedf->grcdump_size) { 3623 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump, 3624 qedf->grcdump_size); 3625 if (rc) { 3626 QEDF_ERR(&(qedf->dbg_ctx), 3627 "GRC Dump buffer alloc failed.\n"); 3628 qedf->grcdump = NULL; 3629 } 3630 3631 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3632 "grcdump: addr=%p, size=%u.\n", 3633 qedf->grcdump, qedf->grcdump_size); 3634 } 3635 qedf_create_sysfs_ctx_attr(qedf); 3636 3637 /* Initialize I/O tracing for this adapter */ 3638 spin_lock_init(&qedf->io_trace_lock); 3639 qedf->io_trace_idx = 0; 3640 } 3641 3642 init_completion(&qedf->flogi_compl); 3643 3644 status = qed_ops->common->update_drv_state(qedf->cdev, true); 3645 if (status) 3646 QEDF_ERR(&(qedf->dbg_ctx), 3647 "Failed to send drv state to MFW.\n"); 3648 3649 memset(&link_params, 0, sizeof(struct qed_link_params)); 3650 link_params.link_up = true; 3651 status = qed_ops->common->set_link(qedf->cdev, &link_params); 3652 if (status) 3653 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n"); 3654 3655 /* Start/restart discovery */ 3656 if (mode == QEDF_MODE_RECOVERY) 3657 fcoe_ctlr_link_up(&qedf->ctlr); 3658 else 3659 fc_fabric_login(lport); 3660 3661 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n"); 3662 3663 clear_bit(QEDF_PROBING, &qedf->flags); 3664 3665 /* All good */ 3666 return 0; 3667 3668 err7: 3669 if (qedf->ll2_recv_wq) 3670 destroy_workqueue(qedf->ll2_recv_wq); 3671 fc_remove_host(qedf->lport->host); 3672 scsi_remove_host(qedf->lport->host); 3673 #ifdef CONFIG_DEBUG_FS 3674 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3675 #endif 3676 err6: 3677 qedf_cmd_mgr_free(qedf->cmd_mgr); 3678 err5: 3679 qed_ops->stop(qedf->cdev); 3680 err4: 3681 qedf_free_fcoe_pf_param(qedf); 3682 qedf_sync_free_irqs(qedf); 3683 err3: 3684 qed_ops->common->slowpath_stop(qedf->cdev); 3685 err2: 3686 qed_ops->common->remove(qedf->cdev); 3687 err1: 3688 scsi_host_put(lport->host); 3689 err0: 3690 if (qedf) { 3691 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n"); 3692 3693 clear_bit(QEDF_PROBING, &qedf->flags); 3694 } 3695 return rc; 3696 } 3697 3698 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id) 3699 { 3700 return __qedf_probe(pdev, QEDF_MODE_NORMAL); 3701 } 3702 3703 static void __qedf_remove(struct pci_dev *pdev, int mode) 3704 { 3705 struct qedf_ctx *qedf; 3706 int rc; 3707 3708 if (!pdev) { 3709 QEDF_ERR(NULL, "pdev is NULL.\n"); 3710 return; 3711 } 3712 3713 qedf = pci_get_drvdata(pdev); 3714 3715 /* 3716 * Prevent race where we're in board disable work and then try to 3717 * rmmod the module. 3718 */ 3719 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 3720 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n"); 3721 return; 3722 } 3723 3724 if (mode != QEDF_MODE_RECOVERY) 3725 set_bit(QEDF_UNLOADING, &qedf->flags); 3726 3727 /* Logoff the fabric to upload all connections */ 3728 if (mode == QEDF_MODE_RECOVERY) 3729 fcoe_ctlr_link_down(&qedf->ctlr); 3730 else 3731 fc_fabric_logoff(qedf->lport); 3732 3733 if (!qedf_wait_for_upload(qedf)) 3734 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 3735 3736 #ifdef CONFIG_DEBUG_FS 3737 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3738 #endif 3739 3740 /* Stop any link update handling */ 3741 cancel_delayed_work_sync(&qedf->link_update); 3742 destroy_workqueue(qedf->link_update_wq); 3743 qedf->link_update_wq = NULL; 3744 3745 if (qedf->timer_work_queue) 3746 destroy_workqueue(qedf->timer_work_queue); 3747 3748 /* Stop Light L2 */ 3749 clear_bit(QEDF_LL2_STARTED, &qedf->flags); 3750 qed_ops->ll2->stop(qedf->cdev); 3751 if (qedf->ll2_recv_wq) 3752 destroy_workqueue(qedf->ll2_recv_wq); 3753 3754 /* Stop fastpath */ 3755 qedf_sync_free_irqs(qedf); 3756 qedf_destroy_sb(qedf); 3757 3758 /* 3759 * During recovery don't destroy OS constructs that represent the 3760 * physical port. 3761 */ 3762 if (mode != QEDF_MODE_RECOVERY) { 3763 qedf_free_grc_dump_buf(&qedf->grcdump); 3764 qedf_remove_sysfs_ctx_attr(qedf); 3765 3766 /* Remove all SCSI/libfc/libfcoe structures */ 3767 fcoe_ctlr_destroy(&qedf->ctlr); 3768 fc_lport_destroy(qedf->lport); 3769 fc_remove_host(qedf->lport->host); 3770 scsi_remove_host(qedf->lport->host); 3771 } 3772 3773 qedf_cmd_mgr_free(qedf->cmd_mgr); 3774 3775 if (mode != QEDF_MODE_RECOVERY) { 3776 fc_exch_mgr_free(qedf->lport); 3777 fc_lport_free_stats(qedf->lport); 3778 3779 /* Wait for all vports to be reaped */ 3780 qedf_wait_for_vport_destroy(qedf); 3781 } 3782 3783 /* 3784 * Now that all connections have been uploaded we can stop the 3785 * rest of the qed operations 3786 */ 3787 qed_ops->stop(qedf->cdev); 3788 3789 if (mode != QEDF_MODE_RECOVERY) { 3790 if (qedf->dpc_wq) { 3791 /* Stop general DPC handling */ 3792 destroy_workqueue(qedf->dpc_wq); 3793 qedf->dpc_wq = NULL; 3794 } 3795 } 3796 3797 /* Final shutdown for the board */ 3798 qedf_free_fcoe_pf_param(qedf); 3799 if (mode != QEDF_MODE_RECOVERY) { 3800 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3801 pci_set_drvdata(pdev, NULL); 3802 } 3803 3804 rc = qed_ops->common->update_drv_state(qedf->cdev, false); 3805 if (rc) 3806 QEDF_ERR(&(qedf->dbg_ctx), 3807 "Failed to send drv state to MFW.\n"); 3808 3809 if (mode != QEDF_MODE_RECOVERY && qedf->devlink) { 3810 qed_ops->common->devlink_unregister(qedf->devlink); 3811 qedf->devlink = NULL; 3812 } 3813 3814 qed_ops->common->slowpath_stop(qedf->cdev); 3815 qed_ops->common->remove(qedf->cdev); 3816 3817 mempool_destroy(qedf->io_mempool); 3818 3819 /* Only reap the Scsi_host on a real removal */ 3820 if (mode != QEDF_MODE_RECOVERY) 3821 scsi_host_put(qedf->lport->host); 3822 } 3823 3824 static void qedf_remove(struct pci_dev *pdev) 3825 { 3826 /* Check to make sure this function wasn't already disabled */ 3827 if (!atomic_read(&pdev->enable_cnt)) 3828 return; 3829 3830 __qedf_remove(pdev, QEDF_MODE_NORMAL); 3831 } 3832 3833 void qedf_wq_grcdump(struct work_struct *work) 3834 { 3835 struct qedf_ctx *qedf = 3836 container_of(work, struct qedf_ctx, grcdump_work.work); 3837 3838 QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n"); 3839 qedf_capture_grc_dump(qedf); 3840 } 3841 3842 void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type) 3843 { 3844 struct qedf_ctx *qedf = dev; 3845 3846 QEDF_ERR(&(qedf->dbg_ctx), 3847 "Hardware error handler scheduled, event=%d.\n", 3848 err_type); 3849 3850 if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) { 3851 QEDF_ERR(&(qedf->dbg_ctx), 3852 "Already in recovery, not scheduling board disable work.\n"); 3853 return; 3854 } 3855 3856 switch (err_type) { 3857 case QED_HW_ERR_FAN_FAIL: 3858 schedule_delayed_work(&qedf->board_disable_work, 0); 3859 break; 3860 case QED_HW_ERR_MFW_RESP_FAIL: 3861 case QED_HW_ERR_HW_ATTN: 3862 case QED_HW_ERR_DMAE_FAIL: 3863 case QED_HW_ERR_FW_ASSERT: 3864 /* Prevent HW attentions from being reasserted */ 3865 qed_ops->common->attn_clr_enable(qedf->cdev, true); 3866 break; 3867 case QED_HW_ERR_RAMROD_FAIL: 3868 /* Prevent HW attentions from being reasserted */ 3869 qed_ops->common->attn_clr_enable(qedf->cdev, true); 3870 3871 if (qedf_enable_recovery && qedf->devlink) 3872 qed_ops->common->report_fatal_error(qedf->devlink, 3873 err_type); 3874 3875 break; 3876 default: 3877 break; 3878 } 3879 } 3880 3881 /* 3882 * Protocol TLV handler 3883 */ 3884 void qedf_get_protocol_tlv_data(void *dev, void *data) 3885 { 3886 struct qedf_ctx *qedf = dev; 3887 struct qed_mfw_tlv_fcoe *fcoe = data; 3888 struct fc_lport *lport; 3889 struct Scsi_Host *host; 3890 struct fc_host_attrs *fc_host; 3891 struct fc_host_statistics *hst; 3892 3893 if (!qedf) { 3894 QEDF_ERR(NULL, "qedf is null.\n"); 3895 return; 3896 } 3897 3898 if (test_bit(QEDF_PROBING, &qedf->flags)) { 3899 QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n"); 3900 return; 3901 } 3902 3903 lport = qedf->lport; 3904 host = lport->host; 3905 fc_host = shost_to_fc_host(host); 3906 3907 /* Force a refresh of the fc_host stats including offload stats */ 3908 hst = qedf_fc_get_host_stats(host); 3909 3910 fcoe->qos_pri_set = true; 3911 fcoe->qos_pri = 3; /* Hard coded to 3 in driver */ 3912 3913 fcoe->ra_tov_set = true; 3914 fcoe->ra_tov = lport->r_a_tov; 3915 3916 fcoe->ed_tov_set = true; 3917 fcoe->ed_tov = lport->e_d_tov; 3918 3919 fcoe->npiv_state_set = true; 3920 fcoe->npiv_state = 1; /* NPIV always enabled */ 3921 3922 fcoe->num_npiv_ids_set = true; 3923 fcoe->num_npiv_ids = fc_host->npiv_vports_inuse; 3924 3925 /* Certain attributes we only want to set if we've selected an FCF */ 3926 if (qedf->ctlr.sel_fcf) { 3927 fcoe->switch_name_set = true; 3928 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name); 3929 } 3930 3931 fcoe->port_state_set = true; 3932 /* For qedf we're either link down or fabric attach */ 3933 if (lport->link_up) 3934 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC; 3935 else 3936 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE; 3937 3938 fcoe->link_failures_set = true; 3939 fcoe->link_failures = (u16)hst->link_failure_count; 3940 3941 fcoe->fcoe_txq_depth_set = true; 3942 fcoe->fcoe_rxq_depth_set = true; 3943 fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS; 3944 fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS; 3945 3946 fcoe->fcoe_rx_frames_set = true; 3947 fcoe->fcoe_rx_frames = hst->rx_frames; 3948 3949 fcoe->fcoe_tx_frames_set = true; 3950 fcoe->fcoe_tx_frames = hst->tx_frames; 3951 3952 fcoe->fcoe_rx_bytes_set = true; 3953 fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000; 3954 3955 fcoe->fcoe_tx_bytes_set = true; 3956 fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000; 3957 3958 fcoe->crc_count_set = true; 3959 fcoe->crc_count = hst->invalid_crc_count; 3960 3961 fcoe->tx_abts_set = true; 3962 fcoe->tx_abts = hst->fcp_packet_aborts; 3963 3964 fcoe->tx_lun_rst_set = true; 3965 fcoe->tx_lun_rst = qedf->lun_resets; 3966 3967 fcoe->abort_task_sets_set = true; 3968 fcoe->abort_task_sets = qedf->packet_aborts; 3969 3970 fcoe->scsi_busy_set = true; 3971 fcoe->scsi_busy = qedf->busy; 3972 3973 fcoe->scsi_tsk_full_set = true; 3974 fcoe->scsi_tsk_full = qedf->task_set_fulls; 3975 } 3976 3977 /* Deferred work function to perform soft context reset on STAG change */ 3978 void qedf_stag_change_work(struct work_struct *work) 3979 { 3980 struct qedf_ctx *qedf = 3981 container_of(work, struct qedf_ctx, stag_work.work); 3982 3983 QEDF_ERR(&qedf->dbg_ctx, "Performing software context reset.\n"); 3984 qedf_ctx_soft_reset(qedf->lport); 3985 } 3986 3987 static void qedf_shutdown(struct pci_dev *pdev) 3988 { 3989 __qedf_remove(pdev, QEDF_MODE_NORMAL); 3990 } 3991 3992 /* 3993 * Recovery handler code 3994 */ 3995 static void qedf_schedule_recovery_handler(void *dev) 3996 { 3997 struct qedf_ctx *qedf = dev; 3998 3999 QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n"); 4000 schedule_delayed_work(&qedf->recovery_work, 0); 4001 } 4002 4003 static void qedf_recovery_handler(struct work_struct *work) 4004 { 4005 struct qedf_ctx *qedf = 4006 container_of(work, struct qedf_ctx, recovery_work.work); 4007 4008 if (test_and_set_bit(QEDF_IN_RECOVERY, &qedf->flags)) 4009 return; 4010 4011 /* 4012 * Call common_ops->recovery_prolog to allow the MFW to quiesce 4013 * any PCI transactions. 4014 */ 4015 qed_ops->common->recovery_prolog(qedf->cdev); 4016 4017 QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n"); 4018 __qedf_remove(qedf->pdev, QEDF_MODE_RECOVERY); 4019 /* 4020 * Reset link and dcbx to down state since we will not get a link down 4021 * event from the MFW but calling __qedf_remove will essentially be a 4022 * link down event. 4023 */ 4024 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 4025 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 4026 __qedf_probe(qedf->pdev, QEDF_MODE_RECOVERY); 4027 clear_bit(QEDF_IN_RECOVERY, &qedf->flags); 4028 QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n"); 4029 } 4030 4031 /* Generic TLV data callback */ 4032 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 4033 { 4034 struct qedf_ctx *qedf; 4035 4036 if (!dev) { 4037 QEDF_INFO(NULL, QEDF_LOG_EVT, 4038 "dev is NULL so ignoring get_generic_tlv_data request.\n"); 4039 return; 4040 } 4041 qedf = (struct qedf_ctx *)dev; 4042 4043 memset(data, 0, sizeof(struct qed_generic_tlvs)); 4044 ether_addr_copy(data->mac[0], qedf->mac); 4045 } 4046 4047 /* 4048 * Module Init/Remove 4049 */ 4050 4051 static int __init qedf_init(void) 4052 { 4053 int ret; 4054 4055 /* If debug=1 passed, set the default log mask */ 4056 if (qedf_debug == QEDF_LOG_DEFAULT) 4057 qedf_debug = QEDF_DEFAULT_LOG_MASK; 4058 4059 /* 4060 * Check that default prio for FIP/FCoE traffic is between 0..7 if a 4061 * value has been set 4062 */ 4063 if (qedf_default_prio > -1) 4064 if (qedf_default_prio > 7) { 4065 qedf_default_prio = QEDF_DEFAULT_PRIO; 4066 QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n", 4067 QEDF_DEFAULT_PRIO); 4068 } 4069 4070 /* Print driver banner */ 4071 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR, 4072 QEDF_VERSION); 4073 4074 /* Create kmem_cache for qedf_io_work structs */ 4075 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache", 4076 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL); 4077 if (qedf_io_work_cache == NULL) { 4078 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n"); 4079 goto err1; 4080 } 4081 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n", 4082 qedf_io_work_cache); 4083 4084 qed_ops = qed_get_fcoe_ops(); 4085 if (!qed_ops) { 4086 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n"); 4087 goto err1; 4088 } 4089 4090 #ifdef CONFIG_DEBUG_FS 4091 qedf_dbg_init("qedf"); 4092 #endif 4093 4094 qedf_fc_transport_template = 4095 fc_attach_transport(&qedf_fc_transport_fn); 4096 if (!qedf_fc_transport_template) { 4097 QEDF_ERR(NULL, "Could not register with FC transport\n"); 4098 goto err2; 4099 } 4100 4101 qedf_fc_vport_transport_template = 4102 fc_attach_transport(&qedf_fc_vport_transport_fn); 4103 if (!qedf_fc_vport_transport_template) { 4104 QEDF_ERR(NULL, "Could not register vport template with FC " 4105 "transport\n"); 4106 goto err3; 4107 } 4108 4109 qedf_io_wq = create_workqueue("qedf_io_wq"); 4110 if (!qedf_io_wq) { 4111 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n"); 4112 goto err4; 4113 } 4114 4115 qedf_cb_ops.get_login_failures = qedf_get_login_failures; 4116 4117 ret = pci_register_driver(&qedf_pci_driver); 4118 if (ret) { 4119 QEDF_ERR(NULL, "Failed to register driver\n"); 4120 goto err5; 4121 } 4122 4123 return 0; 4124 4125 err5: 4126 destroy_workqueue(qedf_io_wq); 4127 err4: 4128 fc_release_transport(qedf_fc_vport_transport_template); 4129 err3: 4130 fc_release_transport(qedf_fc_transport_template); 4131 err2: 4132 #ifdef CONFIG_DEBUG_FS 4133 qedf_dbg_exit(); 4134 #endif 4135 qed_put_fcoe_ops(); 4136 err1: 4137 return -EINVAL; 4138 } 4139 4140 static void __exit qedf_cleanup(void) 4141 { 4142 pci_unregister_driver(&qedf_pci_driver); 4143 4144 destroy_workqueue(qedf_io_wq); 4145 4146 fc_release_transport(qedf_fc_vport_transport_template); 4147 fc_release_transport(qedf_fc_transport_template); 4148 #ifdef CONFIG_DEBUG_FS 4149 qedf_dbg_exit(); 4150 #endif 4151 qed_put_fcoe_ops(); 4152 4153 kmem_cache_destroy(qedf_io_work_cache); 4154 } 4155 4156 MODULE_LICENSE("GPL"); 4157 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module"); 4158 MODULE_AUTHOR("QLogic Corporation"); 4159 MODULE_VERSION(QEDF_VERSION); 4160 module_init(qedf_init); 4161 module_exit(qedf_cleanup); 4162