1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * QLogic FCoE Offload Driver 4 * Copyright (c) 2016-2018 Cavium Inc. 5 */ 6 #include <linux/init.h> 7 #include <linux/kernel.h> 8 #include <linux/module.h> 9 #include <linux/pci.h> 10 #include <linux/device.h> 11 #include <linux/highmem.h> 12 #include <linux/crc32.h> 13 #include <linux/interrupt.h> 14 #include <linux/list.h> 15 #include <linux/kthread.h> 16 #include <linux/phylink.h> 17 #include <scsi/libfc.h> 18 #include <scsi/scsi_host.h> 19 #include <scsi/fc_frame.h> 20 #include <linux/if_ether.h> 21 #include <linux/if_vlan.h> 22 #include <linux/cpu.h> 23 #include "qedf.h" 24 #include "qedf_dbg.h" 25 #include <uapi/linux/pci_regs.h> 26 27 const struct qed_fcoe_ops *qed_ops; 28 29 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id); 30 static void qedf_remove(struct pci_dev *pdev); 31 static void qedf_shutdown(struct pci_dev *pdev); 32 static void qedf_schedule_recovery_handler(void *dev); 33 static void qedf_recovery_handler(struct work_struct *work); 34 35 /* 36 * Driver module parameters. 37 */ 38 static unsigned int qedf_dev_loss_tmo = 60; 39 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO); 40 MODULE_PARM_DESC(dev_loss_tmo, " dev_loss_tmo setting for attached " 41 "remote ports (default 60)"); 42 43 uint qedf_debug = QEDF_LOG_INFO; 44 module_param_named(debug, qedf_debug, uint, S_IRUGO|S_IWUSR); 45 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging" 46 " mask"); 47 48 static uint qedf_fipvlan_retries = 60; 49 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO); 50 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt " 51 "before giving up (default 60)"); 52 53 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN; 54 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO); 55 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails " 56 "(default 1002)."); 57 58 static int qedf_default_prio = -1; 59 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO); 60 MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE" 61 " traffic (value between 0 and 7, default 3)."); 62 63 uint qedf_dump_frames; 64 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR); 65 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames " 66 "(default off)"); 67 68 static uint qedf_queue_depth; 69 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO); 70 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered " 71 "by the qedf driver. Default is 0 (use OS default)."); 72 73 uint qedf_io_tracing; 74 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR); 75 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions " 76 "into trace buffer. (default off)."); 77 78 static uint qedf_max_lun = MAX_FIBRE_LUNS; 79 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO); 80 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver " 81 "supports. (default 0xffffffff)"); 82 83 uint qedf_link_down_tmo; 84 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO); 85 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the " 86 "link is down by N seconds."); 87 88 bool qedf_retry_delay; 89 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR); 90 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry " 91 "delay handling (default off)."); 92 93 static bool qedf_dcbx_no_wait; 94 module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR); 95 MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start " 96 "sending FIP VLAN requests on link up (Default: off)."); 97 98 static uint qedf_dp_module; 99 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO); 100 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed " 101 "qed module during probe."); 102 103 static uint qedf_dp_level = QED_LEVEL_NOTICE; 104 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO); 105 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module " 106 "during probe (0-3: 0 more verbose)."); 107 108 static bool qedf_enable_recovery = true; 109 module_param_named(enable_recovery, qedf_enable_recovery, 110 bool, S_IRUGO | S_IWUSR); 111 MODULE_PARM_DESC(enable_recovery, "Enable/disable recovery on driver/firmware " 112 "interface level errors 0 = Disabled, 1 = Enabled (Default: 1)."); 113 114 struct workqueue_struct *qedf_io_wq; 115 116 static struct fcoe_percpu_s qedf_global; 117 static DEFINE_SPINLOCK(qedf_global_lock); 118 119 static struct kmem_cache *qedf_io_work_cache; 120 121 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id) 122 { 123 int vlan_id_tmp = 0; 124 125 vlan_id_tmp = vlan_id | (qedf->prio << VLAN_PRIO_SHIFT); 126 qedf->vlan_id = vlan_id_tmp; 127 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 128 "Setting vlan_id=0x%04x prio=%d.\n", 129 vlan_id_tmp, qedf->prio); 130 } 131 132 /* Returns true if we have a valid vlan, false otherwise */ 133 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf) 134 { 135 136 while (qedf->fipvlan_retries--) { 137 /* This is to catch if link goes down during fipvlan retries */ 138 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 139 QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n"); 140 return false; 141 } 142 143 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 144 QEDF_ERR(&qedf->dbg_ctx, "Driver unloading.\n"); 145 return false; 146 } 147 148 if (qedf->vlan_id > 0) { 149 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 150 "vlan = 0x%x already set, calling ctlr_link_up.\n", 151 qedf->vlan_id); 152 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) 153 fcoe_ctlr_link_up(&qedf->ctlr); 154 return true; 155 } 156 157 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 158 "Retry %d.\n", qedf->fipvlan_retries); 159 init_completion(&qedf->fipvlan_compl); 160 qedf_fcoe_send_vlan_req(qedf); 161 wait_for_completion_timeout(&qedf->fipvlan_compl, 1 * HZ); 162 } 163 164 return false; 165 } 166 167 static void qedf_handle_link_update(struct work_struct *work) 168 { 169 struct qedf_ctx *qedf = 170 container_of(work, struct qedf_ctx, link_update.work); 171 int rc; 172 173 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n", 174 atomic_read(&qedf->link_state)); 175 176 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 177 rc = qedf_initiate_fipvlan_req(qedf); 178 if (rc) 179 return; 180 181 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 182 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 183 "Link is down, resetting vlan_id.\n"); 184 qedf->vlan_id = 0; 185 return; 186 } 187 188 /* 189 * If we get here then we never received a repsonse to our 190 * fip vlan request so set the vlan_id to the default and 191 * tell FCoE that the link is up 192 */ 193 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN " 194 "response, falling back to default VLAN %d.\n", 195 qedf_fallback_vlan); 196 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 197 198 /* 199 * Zero out data_src_addr so we'll update it with the new 200 * lport port_id 201 */ 202 eth_zero_addr(qedf->data_src_addr); 203 fcoe_ctlr_link_up(&qedf->ctlr); 204 } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 205 /* 206 * If we hit here and link_down_tmo_valid is still 1 it means 207 * that link_down_tmo timed out so set it to 0 to make sure any 208 * other readers have accurate state. 209 */ 210 atomic_set(&qedf->link_down_tmo_valid, 0); 211 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 212 "Calling fcoe_ctlr_link_down().\n"); 213 fcoe_ctlr_link_down(&qedf->ctlr); 214 if (qedf_wait_for_upload(qedf) == false) 215 QEDF_ERR(&qedf->dbg_ctx, 216 "Could not upload all sessions.\n"); 217 /* Reset the number of FIP VLAN retries */ 218 qedf->fipvlan_retries = qedf_fipvlan_retries; 219 } 220 } 221 222 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1 223 #define QEDF_FCOE_MAC_METHOD_FCF_MAP 2 224 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3 225 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp) 226 { 227 u8 *granted_mac; 228 struct fc_frame_header *fh = fc_frame_header_get(fp); 229 u8 fc_map[3]; 230 int method = 0; 231 232 /* Get granted MAC address from FIP FLOGI payload */ 233 granted_mac = fr_cb(fp)->granted_mac; 234 235 /* 236 * We set the source MAC for FCoE traffic based on the Granted MAC 237 * address from the switch. 238 * 239 * If granted_mac is non-zero, we used that. 240 * If the granted_mac is zeroed out, created the FCoE MAC based on 241 * the sel_fcf->fc_map and the d_id fo the FLOGI frame. 242 * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the 243 * d_id of the FLOGI frame. 244 */ 245 if (!is_zero_ether_addr(granted_mac)) { 246 ether_addr_copy(qedf->data_src_addr, granted_mac); 247 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC; 248 } else if (qedf->ctlr.sel_fcf->fc_map != 0) { 249 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map); 250 qedf->data_src_addr[0] = fc_map[0]; 251 qedf->data_src_addr[1] = fc_map[1]; 252 qedf->data_src_addr[2] = fc_map[2]; 253 qedf->data_src_addr[3] = fh->fh_d_id[0]; 254 qedf->data_src_addr[4] = fh->fh_d_id[1]; 255 qedf->data_src_addr[5] = fh->fh_d_id[2]; 256 method = QEDF_FCOE_MAC_METHOD_FCF_MAP; 257 } else { 258 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id); 259 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC; 260 } 261 262 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 263 "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method); 264 } 265 266 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp, 267 void *arg) 268 { 269 struct fc_exch *exch = fc_seq_exch(seq); 270 struct fc_lport *lport = exch->lp; 271 struct qedf_ctx *qedf = lport_priv(lport); 272 273 if (!qedf) { 274 QEDF_ERR(NULL, "qedf is NULL.\n"); 275 return; 276 } 277 278 /* 279 * If ERR_PTR is set then don't try to stat anything as it will cause 280 * a crash when we access fp. 281 */ 282 if (IS_ERR(fp)) { 283 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 284 "fp has IS_ERR() set.\n"); 285 goto skip_stat; 286 } 287 288 /* Log stats for FLOGI reject */ 289 if (fc_frame_payload_op(fp) == ELS_LS_RJT) 290 qedf->flogi_failed++; 291 else if (fc_frame_payload_op(fp) == ELS_LS_ACC) { 292 /* Set the source MAC we will use for FCoE traffic */ 293 qedf_set_data_src_addr(qedf, fp); 294 qedf->flogi_pending = 0; 295 } 296 297 /* Complete flogi_compl so we can proceed to sending ADISCs */ 298 complete(&qedf->flogi_compl); 299 300 skip_stat: 301 /* Report response to libfc */ 302 fc_lport_flogi_resp(seq, fp, lport); 303 } 304 305 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did, 306 struct fc_frame *fp, unsigned int op, 307 void (*resp)(struct fc_seq *, 308 struct fc_frame *, 309 void *), 310 void *arg, u32 timeout) 311 { 312 struct qedf_ctx *qedf = lport_priv(lport); 313 314 /* 315 * Intercept FLOGI for statistic purposes. Note we use the resp 316 * callback to tell if this is really a flogi. 317 */ 318 if (resp == fc_lport_flogi_resp) { 319 qedf->flogi_cnt++; 320 if (qedf->flogi_pending >= QEDF_FLOGI_RETRY_CNT) { 321 schedule_delayed_work(&qedf->stag_work, 2); 322 return NULL; 323 } 324 qedf->flogi_pending++; 325 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp, 326 arg, timeout); 327 } 328 329 return fc_elsct_send(lport, did, fp, op, resp, arg, timeout); 330 } 331 332 int qedf_send_flogi(struct qedf_ctx *qedf) 333 { 334 struct fc_lport *lport; 335 struct fc_frame *fp; 336 337 lport = qedf->lport; 338 339 if (!lport->tt.elsct_send) { 340 QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n"); 341 return -EINVAL; 342 } 343 344 fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); 345 if (!fp) { 346 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n"); 347 return -ENOMEM; 348 } 349 350 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 351 "Sending FLOGI to reestablish session with switch.\n"); 352 lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, 353 ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov); 354 355 init_completion(&qedf->flogi_compl); 356 357 return 0; 358 } 359 360 /* 361 * This function is called if link_down_tmo is in use. If we get a link up and 362 * link_down_tmo has not expired then use just FLOGI/ADISC to recover our 363 * sessions with targets. Otherwise, just call fcoe_ctlr_link_up(). 364 */ 365 static void qedf_link_recovery(struct work_struct *work) 366 { 367 struct qedf_ctx *qedf = 368 container_of(work, struct qedf_ctx, link_recovery.work); 369 struct fc_lport *lport = qedf->lport; 370 struct fc_rport_priv *rdata; 371 bool rc; 372 int retries = 30; 373 int rval, i; 374 struct list_head rdata_login_list; 375 376 INIT_LIST_HEAD(&rdata_login_list); 377 378 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 379 "Link down tmo did not expire.\n"); 380 381 /* 382 * Essentially reset the fcoe_ctlr here without affecting the state 383 * of the libfc structs. 384 */ 385 qedf->ctlr.state = FIP_ST_LINK_WAIT; 386 fcoe_ctlr_link_down(&qedf->ctlr); 387 388 /* 389 * Bring the link up before we send the fipvlan request so libfcoe 390 * can select a new fcf in parallel 391 */ 392 fcoe_ctlr_link_up(&qedf->ctlr); 393 394 /* Since the link when down and up to verify which vlan we're on */ 395 qedf->fipvlan_retries = qedf_fipvlan_retries; 396 rc = qedf_initiate_fipvlan_req(qedf); 397 /* If getting the VLAN fails, set the VLAN to the fallback one */ 398 if (!rc) 399 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 400 401 /* 402 * We need to wait for an FCF to be selected due to the 403 * fcoe_ctlr_link_up other the FLOGI will be rejected. 404 */ 405 while (retries > 0) { 406 if (qedf->ctlr.sel_fcf) { 407 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 408 "FCF reselected, proceeding with FLOGI.\n"); 409 break; 410 } 411 msleep(500); 412 retries--; 413 } 414 415 if (retries < 1) { 416 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for " 417 "FCF selection.\n"); 418 return; 419 } 420 421 rval = qedf_send_flogi(qedf); 422 if (rval) 423 return; 424 425 /* Wait for FLOGI completion before proceeding with sending ADISCs */ 426 i = wait_for_completion_timeout(&qedf->flogi_compl, 427 qedf->lport->r_a_tov); 428 if (i == 0) { 429 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n"); 430 return; 431 } 432 433 /* 434 * Call lport->tt.rport_login which will cause libfc to send an 435 * ADISC since the rport is in state ready. 436 */ 437 mutex_lock(&lport->disc.disc_mutex); 438 list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) { 439 if (kref_get_unless_zero(&rdata->kref)) { 440 fc_rport_login(rdata); 441 kref_put(&rdata->kref, fc_rport_destroy); 442 } 443 } 444 mutex_unlock(&lport->disc.disc_mutex); 445 } 446 447 static void qedf_update_link_speed(struct qedf_ctx *qedf, 448 struct qed_link_output *link) 449 { 450 __ETHTOOL_DECLARE_LINK_MODE_MASK(sup_caps); 451 struct fc_lport *lport = qedf->lport; 452 453 lport->link_speed = FC_PORTSPEED_UNKNOWN; 454 lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN; 455 456 /* Set fc_host link speed */ 457 switch (link->speed) { 458 case 10000: 459 lport->link_speed = FC_PORTSPEED_10GBIT; 460 break; 461 case 25000: 462 lport->link_speed = FC_PORTSPEED_25GBIT; 463 break; 464 case 40000: 465 lport->link_speed = FC_PORTSPEED_40GBIT; 466 break; 467 case 50000: 468 lport->link_speed = FC_PORTSPEED_50GBIT; 469 break; 470 case 100000: 471 lport->link_speed = FC_PORTSPEED_100GBIT; 472 break; 473 case 20000: 474 lport->link_speed = FC_PORTSPEED_20GBIT; 475 break; 476 default: 477 lport->link_speed = FC_PORTSPEED_UNKNOWN; 478 break; 479 } 480 481 /* 482 * Set supported link speed by querying the supported 483 * capabilities of the link. 484 */ 485 486 phylink_zero(sup_caps); 487 phylink_set(sup_caps, 10000baseT_Full); 488 phylink_set(sup_caps, 10000baseKX4_Full); 489 phylink_set(sup_caps, 10000baseR_FEC); 490 phylink_set(sup_caps, 10000baseCR_Full); 491 phylink_set(sup_caps, 10000baseSR_Full); 492 phylink_set(sup_caps, 10000baseLR_Full); 493 phylink_set(sup_caps, 10000baseLRM_Full); 494 phylink_set(sup_caps, 10000baseKR_Full); 495 496 if (linkmode_intersects(link->supported_caps, sup_caps)) 497 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT; 498 499 phylink_zero(sup_caps); 500 phylink_set(sup_caps, 25000baseKR_Full); 501 phylink_set(sup_caps, 25000baseCR_Full); 502 phylink_set(sup_caps, 25000baseSR_Full); 503 504 if (linkmode_intersects(link->supported_caps, sup_caps)) 505 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT; 506 507 phylink_zero(sup_caps); 508 phylink_set(sup_caps, 40000baseLR4_Full); 509 phylink_set(sup_caps, 40000baseKR4_Full); 510 phylink_set(sup_caps, 40000baseCR4_Full); 511 phylink_set(sup_caps, 40000baseSR4_Full); 512 513 if (linkmode_intersects(link->supported_caps, sup_caps)) 514 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT; 515 516 phylink_zero(sup_caps); 517 phylink_set(sup_caps, 50000baseKR2_Full); 518 phylink_set(sup_caps, 50000baseCR2_Full); 519 phylink_set(sup_caps, 50000baseSR2_Full); 520 521 if (linkmode_intersects(link->supported_caps, sup_caps)) 522 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT; 523 524 phylink_zero(sup_caps); 525 phylink_set(sup_caps, 100000baseKR4_Full); 526 phylink_set(sup_caps, 100000baseSR4_Full); 527 phylink_set(sup_caps, 100000baseCR4_Full); 528 phylink_set(sup_caps, 100000baseLR4_ER4_Full); 529 530 if (linkmode_intersects(link->supported_caps, sup_caps)) 531 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT; 532 533 phylink_zero(sup_caps); 534 phylink_set(sup_caps, 20000baseKR2_Full); 535 536 if (linkmode_intersects(link->supported_caps, sup_caps)) 537 lport->link_supported_speeds |= FC_PORTSPEED_20GBIT; 538 539 if (lport->host && lport->host->shost_data) 540 fc_host_supported_speeds(lport->host) = 541 lport->link_supported_speeds; 542 } 543 544 static void qedf_bw_update(void *dev) 545 { 546 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 547 struct qed_link_output link; 548 549 /* Get the latest status of the link */ 550 qed_ops->common->get_link(qedf->cdev, &link); 551 552 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 553 QEDF_ERR(&qedf->dbg_ctx, 554 "Ignore link update, driver getting unload.\n"); 555 return; 556 } 557 558 if (link.link_up) { 559 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) 560 qedf_update_link_speed(qedf, &link); 561 else 562 QEDF_ERR(&qedf->dbg_ctx, 563 "Ignore bw update, link is down.\n"); 564 565 } else { 566 QEDF_ERR(&qedf->dbg_ctx, "link_up is not set.\n"); 567 } 568 } 569 570 static void qedf_link_update(void *dev, struct qed_link_output *link) 571 { 572 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 573 574 /* 575 * Prevent race where we're removing the module and we get link update 576 * for qed. 577 */ 578 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 579 QEDF_ERR(&qedf->dbg_ctx, 580 "Ignore link update, driver getting unload.\n"); 581 return; 582 } 583 584 if (link->link_up) { 585 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 586 QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC, 587 "Ignoring link up event as link is already up.\n"); 588 return; 589 } 590 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n", 591 link->speed / 1000); 592 593 /* Cancel any pending link down work */ 594 cancel_delayed_work(&qedf->link_update); 595 596 atomic_set(&qedf->link_state, QEDF_LINK_UP); 597 qedf_update_link_speed(qedf, link); 598 599 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE || 600 qedf_dcbx_no_wait) { 601 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 602 "DCBx done.\n"); 603 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 604 queue_delayed_work(qedf->link_update_wq, 605 &qedf->link_recovery, 0); 606 else 607 queue_delayed_work(qedf->link_update_wq, 608 &qedf->link_update, 0); 609 atomic_set(&qedf->link_down_tmo_valid, 0); 610 } 611 612 } else { 613 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n"); 614 615 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 616 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 617 /* 618 * Flag that we're waiting for the link to come back up before 619 * informing the fcoe layer of the event. 620 */ 621 if (qedf_link_down_tmo > 0) { 622 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 623 "Starting link down tmo.\n"); 624 atomic_set(&qedf->link_down_tmo_valid, 1); 625 } 626 qedf->vlan_id = 0; 627 qedf_update_link_speed(qedf, link); 628 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 629 qedf_link_down_tmo * HZ); 630 } 631 } 632 633 634 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type) 635 { 636 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 637 u8 tmp_prio; 638 639 QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe " 640 "prio=%d.\n", get->operational.valid, get->operational.enabled, 641 get->operational.app_prio.fcoe); 642 643 if (get->operational.enabled && get->operational.valid) { 644 /* If DCBX was already negotiated on link up then just exit */ 645 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) { 646 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 647 "DCBX already set on link up.\n"); 648 return; 649 } 650 651 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE); 652 653 /* 654 * Set the 8021q priority in the following manner: 655 * 656 * 1. If a modparam is set use that 657 * 2. If the value is not between 0..7 use the default 658 * 3. Use the priority we get from the DCBX app tag 659 */ 660 tmp_prio = get->operational.app_prio.fcoe; 661 if (qedf_default_prio > -1) 662 qedf->prio = qedf_default_prio; 663 else if (tmp_prio > 7) { 664 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 665 "FIP/FCoE prio %d out of range, setting to %d.\n", 666 tmp_prio, QEDF_DEFAULT_PRIO); 667 qedf->prio = QEDF_DEFAULT_PRIO; 668 } else 669 qedf->prio = tmp_prio; 670 671 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP && 672 !qedf_dcbx_no_wait) { 673 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 674 queue_delayed_work(qedf->link_update_wq, 675 &qedf->link_recovery, 0); 676 else 677 queue_delayed_work(qedf->link_update_wq, 678 &qedf->link_update, 0); 679 atomic_set(&qedf->link_down_tmo_valid, 0); 680 } 681 } 682 683 } 684 685 static u32 qedf_get_login_failures(void *cookie) 686 { 687 struct qedf_ctx *qedf; 688 689 qedf = (struct qedf_ctx *)cookie; 690 return qedf->flogi_failed; 691 } 692 693 static struct qed_fcoe_cb_ops qedf_cb_ops = { 694 { 695 .link_update = qedf_link_update, 696 .bw_update = qedf_bw_update, 697 .schedule_recovery_handler = qedf_schedule_recovery_handler, 698 .dcbx_aen = qedf_dcbx_handler, 699 .get_generic_tlv_data = qedf_get_generic_tlv_data, 700 .get_protocol_tlv_data = qedf_get_protocol_tlv_data, 701 .schedule_hw_err_handler = qedf_schedule_hw_err_handler, 702 } 703 }; 704 705 /* 706 * Various transport templates. 707 */ 708 709 static struct scsi_transport_template *qedf_fc_transport_template; 710 static struct scsi_transport_template *qedf_fc_vport_transport_template; 711 712 /* 713 * SCSI EH handlers 714 */ 715 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd) 716 { 717 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); 718 struct fc_lport *lport; 719 struct qedf_ctx *qedf; 720 struct qedf_ioreq *io_req; 721 struct fc_rport_libfc_priv *rp = rport->dd_data; 722 struct fc_rport_priv *rdata; 723 struct qedf_rport *fcport = NULL; 724 int rc = FAILED; 725 int wait_count = 100; 726 int refcount = 0; 727 int rval; 728 int got_ref = 0; 729 730 lport = shost_priv(sc_cmd->device->host); 731 qedf = (struct qedf_ctx *)lport_priv(lport); 732 733 /* rport and tgt are allocated together, so tgt should be non-NULL */ 734 fcport = (struct qedf_rport *)&rp[1]; 735 rdata = fcport->rdata; 736 if (!rdata || !kref_get_unless_zero(&rdata->kref)) { 737 QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd); 738 rc = SUCCESS; 739 goto out; 740 } 741 742 743 io_req = qedf_priv(sc_cmd)->io_req; 744 if (!io_req) { 745 QEDF_ERR(&qedf->dbg_ctx, 746 "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n", 747 sc_cmd, sc_cmd->cmnd[0], 748 rdata->ids.port_id); 749 rc = SUCCESS; 750 goto drop_rdata_kref; 751 } 752 753 rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */ 754 if (rval) 755 got_ref = 1; 756 757 /* If we got a valid io_req, confirm it belongs to this sc_cmd. */ 758 if (!rval || io_req->sc_cmd != sc_cmd) { 759 QEDF_ERR(&qedf->dbg_ctx, 760 "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n", 761 io_req->sc_cmd, sc_cmd, rdata->ids.port_id); 762 763 goto drop_rdata_kref; 764 } 765 766 if (fc_remote_port_chkready(rport)) { 767 refcount = kref_read(&io_req->refcount); 768 QEDF_ERR(&qedf->dbg_ctx, 769 "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n", 770 io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0], 771 refcount, rdata->ids.port_id); 772 773 goto drop_rdata_kref; 774 } 775 776 rc = fc_block_scsi_eh(sc_cmd); 777 if (rc) 778 goto drop_rdata_kref; 779 780 if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) { 781 QEDF_ERR(&qedf->dbg_ctx, 782 "Connection uploading, xid=0x%x., port_id=%06x\n", 783 io_req->xid, rdata->ids.port_id); 784 while (io_req->sc_cmd && (wait_count != 0)) { 785 msleep(100); 786 wait_count--; 787 } 788 if (wait_count) { 789 QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n"); 790 rc = SUCCESS; 791 } else { 792 QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n"); 793 rc = FAILED; 794 } 795 goto drop_rdata_kref; 796 } 797 798 if (lport->state != LPORT_ST_READY || !(lport->link_up)) { 799 QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n"); 800 goto drop_rdata_kref; 801 } 802 803 QEDF_ERR(&qedf->dbg_ctx, 804 "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n", 805 io_req, sc_cmd, io_req->xid, io_req->fp_idx, 806 rdata->ids.port_id); 807 808 if (qedf->stop_io_on_error) { 809 qedf_stop_all_io(qedf); 810 rc = SUCCESS; 811 goto drop_rdata_kref; 812 } 813 814 init_completion(&io_req->abts_done); 815 rval = qedf_initiate_abts(io_req, true); 816 if (rval) { 817 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n"); 818 /* 819 * If we fail to queue the ABTS then return this command to 820 * the SCSI layer as it will own and free the xid 821 */ 822 rc = SUCCESS; 823 qedf_scsi_done(qedf, io_req, DID_ERROR); 824 goto drop_rdata_kref; 825 } 826 827 wait_for_completion(&io_req->abts_done); 828 829 if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS || 830 io_req->event == QEDF_IOREQ_EV_ABORT_FAILED || 831 io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) { 832 /* 833 * If we get a reponse to the abort this is success from 834 * the perspective that all references to the command have 835 * been removed from the driver and firmware 836 */ 837 rc = SUCCESS; 838 } else { 839 /* If the abort and cleanup failed then return a failure */ 840 rc = FAILED; 841 } 842 843 if (rc == SUCCESS) 844 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n", 845 io_req->xid); 846 else 847 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n", 848 io_req->xid); 849 850 drop_rdata_kref: 851 kref_put(&rdata->kref, fc_rport_destroy); 852 out: 853 if (got_ref) 854 kref_put(&io_req->refcount, qedf_release_cmd); 855 return rc; 856 } 857 858 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd) 859 { 860 QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...", 861 sc_cmd->device->host->host_no, sc_cmd->device->id, 862 sc_cmd->device->lun); 863 return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET); 864 } 865 866 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd) 867 { 868 QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ", 869 sc_cmd->device->host->host_no, sc_cmd->device->id, 870 sc_cmd->device->lun); 871 return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET); 872 } 873 874 bool qedf_wait_for_upload(struct qedf_ctx *qedf) 875 { 876 struct qedf_rport *fcport; 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 (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 } 902 903 rcu_read_unlock(); 904 return false; 905 } 906 907 /* Performs soft reset of qedf_ctx by simulating a link down/up */ 908 void qedf_ctx_soft_reset(struct fc_lport *lport) 909 { 910 struct qedf_ctx *qedf; 911 struct qed_link_output if_link; 912 913 if (lport->vport) { 914 printk_ratelimited("Cannot issue host reset on NPIV port.\n"); 915 return; 916 } 917 918 qedf = lport_priv(lport); 919 920 qedf->flogi_pending = 0; 921 /* For host reset, essentially do a soft link up/down */ 922 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 923 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 924 "Queuing link down work.\n"); 925 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 926 0); 927 928 if (qedf_wait_for_upload(qedf) == false) { 929 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 930 WARN_ON(atomic_read(&qedf->num_offloads)); 931 } 932 933 /* Before setting link up query physical link state */ 934 qed_ops->common->get_link(qedf->cdev, &if_link); 935 /* Bail if the physical link is not up */ 936 if (!if_link.link_up) { 937 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 938 "Physical link is not up.\n"); 939 return; 940 } 941 /* Flush and wait to make sure link down is processed */ 942 flush_delayed_work(&qedf->link_update); 943 msleep(500); 944 945 atomic_set(&qedf->link_state, QEDF_LINK_UP); 946 qedf->vlan_id = 0; 947 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 948 "Queue link up work.\n"); 949 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 950 0); 951 } 952 953 /* Reset the host by gracefully logging out and then logging back in */ 954 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd) 955 { 956 struct fc_lport *lport; 957 struct qedf_ctx *qedf; 958 959 lport = shost_priv(sc_cmd->device->host); 960 qedf = lport_priv(lport); 961 962 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN || 963 test_bit(QEDF_UNLOADING, &qedf->flags)) 964 return FAILED; 965 966 QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued..."); 967 968 qedf_ctx_soft_reset(lport); 969 970 return SUCCESS; 971 } 972 973 static int qedf_slave_configure(struct scsi_device *sdev) 974 { 975 if (qedf_queue_depth) { 976 scsi_change_queue_depth(sdev, qedf_queue_depth); 977 } 978 979 return 0; 980 } 981 982 static struct scsi_host_template qedf_host_template = { 983 .module = THIS_MODULE, 984 .name = QEDF_MODULE_NAME, 985 .this_id = -1, 986 .cmd_per_lun = 32, 987 .max_sectors = 0xffff, 988 .queuecommand = qedf_queuecommand, 989 .shost_groups = qedf_host_groups, 990 .eh_abort_handler = qedf_eh_abort, 991 .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */ 992 .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */ 993 .eh_host_reset_handler = qedf_eh_host_reset, 994 .slave_configure = qedf_slave_configure, 995 .dma_boundary = QED_HW_DMA_BOUNDARY, 996 .sg_tablesize = QEDF_MAX_BDS_PER_CMD, 997 .can_queue = FCOE_PARAMS_NUM_TASKS, 998 .change_queue_depth = scsi_change_queue_depth, 999 .cmd_size = sizeof(struct qedf_cmd_priv), 1000 }; 1001 1002 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen) 1003 { 1004 int rc; 1005 1006 spin_lock(&qedf_global_lock); 1007 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global); 1008 spin_unlock(&qedf_global_lock); 1009 1010 return rc; 1011 } 1012 1013 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id) 1014 { 1015 struct qedf_rport *fcport; 1016 struct fc_rport_priv *rdata; 1017 1018 rcu_read_lock(); 1019 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 1020 rdata = fcport->rdata; 1021 if (rdata == NULL) 1022 continue; 1023 if (rdata->ids.port_id == port_id) { 1024 rcu_read_unlock(); 1025 return fcport; 1026 } 1027 } 1028 rcu_read_unlock(); 1029 1030 /* Return NULL to caller to let them know fcport was not found */ 1031 return NULL; 1032 } 1033 1034 /* Transmits an ELS frame over an offloaded session */ 1035 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp) 1036 { 1037 struct fc_frame_header *fh; 1038 int rc = 0; 1039 1040 fh = fc_frame_header_get(fp); 1041 if ((fh->fh_type == FC_TYPE_ELS) && 1042 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 1043 switch (fc_frame_payload_op(fp)) { 1044 case ELS_ADISC: 1045 qedf_send_adisc(fcport, fp); 1046 rc = 1; 1047 break; 1048 } 1049 } 1050 1051 return rc; 1052 } 1053 1054 /* 1055 * qedf_xmit - qedf FCoE frame transmit function 1056 */ 1057 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp) 1058 { 1059 struct fc_lport *base_lport; 1060 struct qedf_ctx *qedf; 1061 struct ethhdr *eh; 1062 struct fcoe_crc_eof *cp; 1063 struct sk_buff *skb; 1064 struct fc_frame_header *fh; 1065 struct fcoe_hdr *hp; 1066 u8 sof, eof; 1067 u32 crc; 1068 unsigned int hlen, tlen, elen; 1069 int wlen; 1070 struct fc_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 this_cpu_inc(lport->stats->TxFrames); 1218 this_cpu_add(lport->stats->TxWords, wlen); 1219 1220 /* Get VLAN ID from skb for printing purposes */ 1221 __vlan_hwaccel_get_tag(skb, &vlan_tci); 1222 1223 /* send down to lld */ 1224 fr_dev(fp) = lport; 1225 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: " 1226 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n", 1227 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type, 1228 vlan_tci); 1229 if (qedf_dump_frames) 1230 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 1231 1, skb->data, skb->len, false); 1232 rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0); 1233 if (rc) { 1234 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc); 1235 kfree_skb(skb); 1236 return rc; 1237 } 1238 1239 return 0; 1240 } 1241 1242 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1243 { 1244 int rval = 0; 1245 u32 *pbl; 1246 dma_addr_t page; 1247 int num_pages; 1248 1249 /* Calculate appropriate queue and PBL sizes */ 1250 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 1251 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE); 1252 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) * 1253 sizeof(void *); 1254 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE; 1255 1256 fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1257 &fcport->sq_dma, GFP_KERNEL); 1258 if (!fcport->sq) { 1259 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n"); 1260 rval = 1; 1261 goto out; 1262 } 1263 1264 fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 1265 fcport->sq_pbl_size, 1266 &fcport->sq_pbl_dma, GFP_KERNEL); 1267 if (!fcport->sq_pbl) { 1268 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n"); 1269 rval = 1; 1270 goto out_free_sq; 1271 } 1272 1273 /* Create PBL */ 1274 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE; 1275 page = fcport->sq_dma; 1276 pbl = (u32 *)fcport->sq_pbl; 1277 1278 while (num_pages--) { 1279 *pbl = U64_LO(page); 1280 pbl++; 1281 *pbl = U64_HI(page); 1282 pbl++; 1283 page += QEDF_PAGE_SIZE; 1284 } 1285 1286 return rval; 1287 1288 out_free_sq: 1289 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq, 1290 fcport->sq_dma); 1291 out: 1292 return rval; 1293 } 1294 1295 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1296 { 1297 if (fcport->sq_pbl) 1298 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size, 1299 fcport->sq_pbl, fcport->sq_pbl_dma); 1300 if (fcport->sq) 1301 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1302 fcport->sq, fcport->sq_dma); 1303 } 1304 1305 static int qedf_offload_connection(struct qedf_ctx *qedf, 1306 struct qedf_rport *fcport) 1307 { 1308 struct qed_fcoe_params_offload conn_info; 1309 u32 port_id; 1310 int rval; 1311 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe)); 1312 1313 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection " 1314 "portid=%06x.\n", fcport->rdata->ids.port_id); 1315 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle, 1316 &fcport->fw_cid, &fcport->p_doorbell); 1317 if (rval) { 1318 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection " 1319 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1320 rval = 1; /* For some reason qed returns 0 on failure here */ 1321 goto out; 1322 } 1323 1324 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x " 1325 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id, 1326 fcport->fw_cid, fcport->handle); 1327 1328 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload)); 1329 1330 /* Fill in the offload connection info */ 1331 conn_info.sq_pbl_addr = fcport->sq_pbl_dma; 1332 1333 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl); 1334 conn_info.sq_next_page_addr = 1335 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8)); 1336 1337 /* Need to use our FCoE MAC for the offload session */ 1338 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr); 1339 1340 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr); 1341 1342 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size; 1343 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov; 1344 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */ 1345 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size; 1346 1347 /* Set VLAN data */ 1348 conn_info.vlan_tag = qedf->vlan_id << 1349 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT; 1350 conn_info.vlan_tag |= 1351 qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT; 1352 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK << 1353 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT); 1354 1355 /* Set host port source id */ 1356 port_id = fc_host_port_id(qedf->lport->host); 1357 fcport->sid = port_id; 1358 conn_info.s_id.addr_hi = (port_id & 0x000000FF); 1359 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1360 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1361 1362 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq; 1363 1364 /* Set remote port destination id */ 1365 port_id = fcport->rdata->rport->port_id; 1366 conn_info.d_id.addr_hi = (port_id & 0x000000FF); 1367 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1368 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1369 1370 conn_info.def_q_idx = 0; /* Default index for send queue? */ 1371 1372 /* Set FC-TAPE specific flags if needed */ 1373 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) { 1374 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, 1375 "Enable CONF, REC for portid=%06x.\n", 1376 fcport->rdata->ids.port_id); 1377 conn_info.flags |= 1 << 1378 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT; 1379 conn_info.flags |= 1380 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) << 1381 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT; 1382 } 1383 1384 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info); 1385 if (rval) { 1386 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection " 1387 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1388 goto out_free_conn; 1389 } else 1390 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload " 1391 "succeeded portid=%06x total_sqe=%d.\n", 1392 fcport->rdata->ids.port_id, total_sqe); 1393 1394 spin_lock_init(&fcport->rport_lock); 1395 atomic_set(&fcport->free_sqes, total_sqe); 1396 return 0; 1397 out_free_conn: 1398 qed_ops->release_conn(qedf->cdev, fcport->handle); 1399 out: 1400 return rval; 1401 } 1402 1403 #define QEDF_TERM_BUFF_SIZE 10 1404 static void qedf_upload_connection(struct qedf_ctx *qedf, 1405 struct qedf_rport *fcport) 1406 { 1407 void *term_params; 1408 dma_addr_t term_params_dma; 1409 1410 /* Term params needs to be a DMA coherent buffer as qed shared the 1411 * physical DMA address with the firmware. The buffer may be used in 1412 * the receive path so we may eventually have to move this. 1413 */ 1414 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, 1415 &term_params_dma, GFP_KERNEL); 1416 if (!term_params) 1417 return; 1418 1419 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection " 1420 "port_id=%06x.\n", fcport->rdata->ids.port_id); 1421 1422 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma); 1423 qed_ops->release_conn(qedf->cdev, fcport->handle); 1424 1425 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params, 1426 term_params_dma); 1427 } 1428 1429 static void qedf_cleanup_fcport(struct qedf_ctx *qedf, 1430 struct qedf_rport *fcport) 1431 { 1432 struct fc_rport_priv *rdata = fcport->rdata; 1433 1434 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n", 1435 fcport->rdata->ids.port_id); 1436 1437 /* Flush any remaining i/o's before we upload the connection */ 1438 qedf_flush_active_ios(fcport, -1); 1439 1440 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) 1441 qedf_upload_connection(qedf, fcport); 1442 qedf_free_sq(qedf, fcport); 1443 fcport->rdata = NULL; 1444 fcport->qedf = NULL; 1445 kref_put(&rdata->kref, fc_rport_destroy); 1446 } 1447 1448 /* 1449 * This event_callback is called after successful completion of libfc 1450 * initiated target login. qedf can proceed with initiating the session 1451 * establishment. 1452 */ 1453 static void qedf_rport_event_handler(struct fc_lport *lport, 1454 struct fc_rport_priv *rdata, 1455 enum fc_rport_event event) 1456 { 1457 struct qedf_ctx *qedf = lport_priv(lport); 1458 struct fc_rport *rport = rdata->rport; 1459 struct fc_rport_libfc_priv *rp; 1460 struct qedf_rport *fcport; 1461 u32 port_id; 1462 int rval; 1463 unsigned long flags; 1464 1465 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, " 1466 "port_id = 0x%x\n", event, rdata->ids.port_id); 1467 1468 switch (event) { 1469 case RPORT_EV_READY: 1470 if (!rport) { 1471 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n"); 1472 break; 1473 } 1474 1475 rp = rport->dd_data; 1476 fcport = (struct qedf_rport *)&rp[1]; 1477 fcport->qedf = qedf; 1478 1479 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) { 1480 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading " 1481 "portid=0x%x as max number of offloaded sessions " 1482 "reached.\n", rdata->ids.port_id); 1483 return; 1484 } 1485 1486 /* 1487 * Don't try to offload the session again. Can happen when we 1488 * get an ADISC 1489 */ 1490 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1491 QEDF_WARN(&(qedf->dbg_ctx), "Session already " 1492 "offloaded, portid=0x%x.\n", 1493 rdata->ids.port_id); 1494 return; 1495 } 1496 1497 if (rport->port_id == FC_FID_DIR_SERV) { 1498 /* 1499 * qedf_rport structure doesn't exist for 1500 * directory server. 1501 * We should not come here, as lport will 1502 * take care of fabric login 1503 */ 1504 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not " 1505 "exist for dir server port_id=%x\n", 1506 rdata->ids.port_id); 1507 break; 1508 } 1509 1510 if (rdata->spp_type != FC_TYPE_FCP) { 1511 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1512 "Not offloading since spp type isn't FCP\n"); 1513 break; 1514 } 1515 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1516 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1517 "Not FCP target so not offloading\n"); 1518 break; 1519 } 1520 1521 /* Initial reference held on entry, so this can't fail */ 1522 kref_get(&rdata->kref); 1523 fcport->rdata = rdata; 1524 fcport->rport = rport; 1525 1526 rval = qedf_alloc_sq(qedf, fcport); 1527 if (rval) { 1528 qedf_cleanup_fcport(qedf, fcport); 1529 break; 1530 } 1531 1532 /* Set device type */ 1533 if (rdata->flags & FC_RP_FLAGS_RETRY && 1534 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET && 1535 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) { 1536 fcport->dev_type = QEDF_RPORT_TYPE_TAPE; 1537 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1538 "portid=%06x is a TAPE device.\n", 1539 rdata->ids.port_id); 1540 } else { 1541 fcport->dev_type = QEDF_RPORT_TYPE_DISK; 1542 } 1543 1544 rval = qedf_offload_connection(qedf, fcport); 1545 if (rval) { 1546 qedf_cleanup_fcport(qedf, fcport); 1547 break; 1548 } 1549 1550 /* Add fcport to list of qedf_ctx list of offloaded ports */ 1551 spin_lock_irqsave(&qedf->hba_lock, flags); 1552 list_add_rcu(&fcport->peers, &qedf->fcports); 1553 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1554 1555 /* 1556 * Set the session ready bit to let everyone know that this 1557 * connection is ready for I/O 1558 */ 1559 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags); 1560 atomic_inc(&qedf->num_offloads); 1561 1562 break; 1563 case RPORT_EV_LOGO: 1564 case RPORT_EV_FAILED: 1565 case RPORT_EV_STOP: 1566 port_id = rdata->ids.port_id; 1567 if (port_id == FC_FID_DIR_SERV) 1568 break; 1569 1570 if (rdata->spp_type != FC_TYPE_FCP) { 1571 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1572 "No action since spp type isn't FCP\n"); 1573 break; 1574 } 1575 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1576 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1577 "Not FCP target so no action\n"); 1578 break; 1579 } 1580 1581 if (!rport) { 1582 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1583 "port_id=%x - rport notcreated Yet!!\n", port_id); 1584 break; 1585 } 1586 rp = rport->dd_data; 1587 /* 1588 * Perform session upload. Note that rdata->peers is already 1589 * removed from disc->rports list before we get this event. 1590 */ 1591 fcport = (struct qedf_rport *)&rp[1]; 1592 1593 spin_lock_irqsave(&fcport->rport_lock, flags); 1594 /* Only free this fcport if it is offloaded already */ 1595 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) && 1596 !test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1597 &fcport->flags)) { 1598 set_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1599 &fcport->flags); 1600 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1601 qedf_cleanup_fcport(qedf, fcport); 1602 /* 1603 * Remove fcport to list of qedf_ctx list of offloaded 1604 * ports 1605 */ 1606 spin_lock_irqsave(&qedf->hba_lock, flags); 1607 list_del_rcu(&fcport->peers); 1608 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1609 1610 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1611 &fcport->flags); 1612 atomic_dec(&qedf->num_offloads); 1613 } else { 1614 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1615 } 1616 break; 1617 1618 case RPORT_EV_NONE: 1619 break; 1620 } 1621 } 1622 1623 static void qedf_abort_io(struct fc_lport *lport) 1624 { 1625 /* NO-OP but need to fill in the template */ 1626 } 1627 1628 static void qedf_fcp_cleanup(struct fc_lport *lport) 1629 { 1630 /* 1631 * NO-OP but need to fill in template to prevent a NULL 1632 * function pointer dereference during link down. I/Os 1633 * will be flushed when port is uploaded. 1634 */ 1635 } 1636 1637 static struct libfc_function_template qedf_lport_template = { 1638 .frame_send = qedf_xmit, 1639 .fcp_abort_io = qedf_abort_io, 1640 .fcp_cleanup = qedf_fcp_cleanup, 1641 .rport_event_callback = qedf_rport_event_handler, 1642 .elsct_send = qedf_elsct_send, 1643 }; 1644 1645 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf) 1646 { 1647 fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO); 1648 1649 qedf->ctlr.send = qedf_fip_send; 1650 qedf->ctlr.get_src_addr = qedf_get_src_mac; 1651 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac); 1652 } 1653 1654 static void qedf_setup_fdmi(struct qedf_ctx *qedf) 1655 { 1656 struct fc_lport *lport = qedf->lport; 1657 u8 buf[8]; 1658 int pos; 1659 uint32_t i; 1660 1661 /* 1662 * fdmi_enabled needs to be set for libfc 1663 * to execute FDMI registration 1664 */ 1665 lport->fdmi_enabled = 1; 1666 1667 /* 1668 * Setup the necessary fc_host attributes to that will be used to fill 1669 * in the FDMI information. 1670 */ 1671 1672 /* Get the PCI-e Device Serial Number Capability */ 1673 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN); 1674 if (pos) { 1675 pos += 4; 1676 for (i = 0; i < 8; i++) 1677 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]); 1678 1679 snprintf(fc_host_serial_number(lport->host), 1680 FC_SERIAL_NUMBER_SIZE, 1681 "%02X%02X%02X%02X%02X%02X%02X%02X", 1682 buf[7], buf[6], buf[5], buf[4], 1683 buf[3], buf[2], buf[1], buf[0]); 1684 } else 1685 snprintf(fc_host_serial_number(lport->host), 1686 FC_SERIAL_NUMBER_SIZE, "Unknown"); 1687 1688 snprintf(fc_host_manufacturer(lport->host), 1689 FC_SERIAL_NUMBER_SIZE, "%s", "Marvell Semiconductor Inc."); 1690 1691 if (qedf->pdev->device == QL45xxx) { 1692 snprintf(fc_host_model(lport->host), 1693 FC_SYMBOLIC_NAME_SIZE, "%s", "QL45xxx"); 1694 1695 snprintf(fc_host_model_description(lport->host), 1696 FC_SYMBOLIC_NAME_SIZE, "%s", 1697 "Marvell FastLinQ QL45xxx FCoE Adapter"); 1698 } 1699 1700 if (qedf->pdev->device == QL41xxx) { 1701 snprintf(fc_host_model(lport->host), 1702 FC_SYMBOLIC_NAME_SIZE, "%s", "QL41xxx"); 1703 1704 snprintf(fc_host_model_description(lport->host), 1705 FC_SYMBOLIC_NAME_SIZE, "%s", 1706 "Marvell FastLinQ QL41xxx FCoE Adapter"); 1707 } 1708 1709 snprintf(fc_host_hardware_version(lport->host), 1710 FC_VERSION_STRING_SIZE, "Rev %d", qedf->pdev->revision); 1711 1712 snprintf(fc_host_driver_version(lport->host), 1713 FC_VERSION_STRING_SIZE, "%s", QEDF_VERSION); 1714 1715 snprintf(fc_host_firmware_version(lport->host), 1716 FC_VERSION_STRING_SIZE, "%d.%d.%d.%d", 1717 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 1718 FW_ENGINEERING_VERSION); 1719 1720 snprintf(fc_host_vendor_identifier(lport->host), 1721 FC_VENDOR_IDENTIFIER, "%s", "Marvell"); 1722 1723 } 1724 1725 static int qedf_lport_setup(struct qedf_ctx *qedf) 1726 { 1727 struct fc_lport *lport = qedf->lport; 1728 1729 lport->link_up = 0; 1730 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1731 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1732 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1733 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1734 lport->boot_time = jiffies; 1735 lport->e_d_tov = 2 * 1000; 1736 lport->r_a_tov = 10 * 1000; 1737 1738 /* Set NPIV support */ 1739 lport->does_npiv = 1; 1740 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV; 1741 1742 fc_set_wwnn(lport, qedf->wwnn); 1743 fc_set_wwpn(lport, qedf->wwpn); 1744 1745 if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) { 1746 QEDF_ERR(&qedf->dbg_ctx, 1747 "fcoe_libfc_config failed.\n"); 1748 return -ENOMEM; 1749 } 1750 1751 /* Allocate the exchange manager */ 1752 fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS, 1753 0xfffe, NULL); 1754 1755 if (fc_lport_init_stats(lport)) 1756 return -ENOMEM; 1757 1758 /* Finish lport config */ 1759 fc_lport_config(lport); 1760 1761 /* Set max frame size */ 1762 fc_set_mfs(lport, QEDF_MFS); 1763 fc_host_maxframe_size(lport->host) = lport->mfs; 1764 1765 /* Set default dev_loss_tmo based on module parameter */ 1766 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo; 1767 1768 /* Set symbolic node name */ 1769 if (qedf->pdev->device == QL45xxx) 1770 snprintf(fc_host_symbolic_name(lport->host), 256, 1771 "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION); 1772 1773 if (qedf->pdev->device == QL41xxx) 1774 snprintf(fc_host_symbolic_name(lport->host), 256, 1775 "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION); 1776 1777 qedf_setup_fdmi(qedf); 1778 1779 return 0; 1780 } 1781 1782 /* 1783 * NPIV functions 1784 */ 1785 1786 static int qedf_vport_libfc_config(struct fc_vport *vport, 1787 struct fc_lport *lport) 1788 { 1789 lport->link_up = 0; 1790 lport->qfull = 0; 1791 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1792 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1793 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1794 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1795 lport->boot_time = jiffies; 1796 lport->e_d_tov = 2 * 1000; 1797 lport->r_a_tov = 10 * 1000; 1798 lport->does_npiv = 1; /* Temporary until we add NPIV support */ 1799 1800 /* Allocate stats for vport */ 1801 if (fc_lport_init_stats(lport)) 1802 return -ENOMEM; 1803 1804 /* Finish lport config */ 1805 fc_lport_config(lport); 1806 1807 /* offload related configuration */ 1808 lport->crc_offload = 0; 1809 lport->seq_offload = 0; 1810 lport->lro_enabled = 0; 1811 lport->lro_xid = 0; 1812 lport->lso_max = 0; 1813 1814 return 0; 1815 } 1816 1817 static int qedf_vport_create(struct fc_vport *vport, bool disabled) 1818 { 1819 struct Scsi_Host *shost = vport_to_shost(vport); 1820 struct fc_lport *n_port = shost_priv(shost); 1821 struct fc_lport *vn_port; 1822 struct qedf_ctx *base_qedf = lport_priv(n_port); 1823 struct qedf_ctx *vport_qedf; 1824 1825 char buf[32]; 1826 int rc = 0; 1827 1828 rc = fcoe_validate_vport_create(vport); 1829 if (rc) { 1830 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1831 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, " 1832 "WWPN (0x%s) already exists.\n", buf); 1833 return rc; 1834 } 1835 1836 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) { 1837 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport " 1838 "because link is not up.\n"); 1839 return -EIO; 1840 } 1841 1842 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx)); 1843 if (!vn_port) { 1844 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport " 1845 "for vport.\n"); 1846 return -ENOMEM; 1847 } 1848 1849 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1850 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n", 1851 buf); 1852 1853 /* Copy some fields from base_qedf */ 1854 vport_qedf = lport_priv(vn_port); 1855 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx)); 1856 1857 /* Set qedf data specific to this vport */ 1858 vport_qedf->lport = vn_port; 1859 /* Use same hba_lock as base_qedf */ 1860 vport_qedf->hba_lock = base_qedf->hba_lock; 1861 vport_qedf->pdev = base_qedf->pdev; 1862 vport_qedf->cmd_mgr = base_qedf->cmd_mgr; 1863 init_completion(&vport_qedf->flogi_compl); 1864 INIT_LIST_HEAD(&vport_qedf->fcports); 1865 INIT_DELAYED_WORK(&vport_qedf->stag_work, qedf_stag_change_work); 1866 1867 rc = qedf_vport_libfc_config(vport, vn_port); 1868 if (rc) { 1869 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory " 1870 "for lport stats.\n"); 1871 goto err; 1872 } 1873 1874 fc_set_wwnn(vn_port, vport->node_name); 1875 fc_set_wwpn(vn_port, vport->port_name); 1876 vport_qedf->wwnn = vn_port->wwnn; 1877 vport_qedf->wwpn = vn_port->wwpn; 1878 1879 vn_port->host->transportt = qedf_fc_vport_transport_template; 1880 vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS; 1881 vn_port->host->max_lun = qedf_max_lun; 1882 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD; 1883 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN; 1884 vn_port->host->max_id = QEDF_MAX_SESSIONS; 1885 1886 rc = scsi_add_host(vn_port->host, &vport->dev); 1887 if (rc) { 1888 QEDF_WARN(&base_qedf->dbg_ctx, 1889 "Error adding Scsi_Host rc=0x%x.\n", rc); 1890 goto err; 1891 } 1892 1893 /* Set default dev_loss_tmo based on module parameter */ 1894 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo; 1895 1896 /* Init libfc stuffs */ 1897 memcpy(&vn_port->tt, &qedf_lport_template, 1898 sizeof(qedf_lport_template)); 1899 fc_exch_init(vn_port); 1900 fc_elsct_init(vn_port); 1901 fc_lport_init(vn_port); 1902 fc_disc_init(vn_port); 1903 fc_disc_config(vn_port, vn_port); 1904 1905 1906 /* Allocate the exchange manager */ 1907 shost = vport_to_shost(vport); 1908 n_port = shost_priv(shost); 1909 fc_exch_mgr_list_clone(n_port, vn_port); 1910 1911 /* Set max frame size */ 1912 fc_set_mfs(vn_port, QEDF_MFS); 1913 1914 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN; 1915 1916 if (disabled) { 1917 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1918 } else { 1919 vn_port->boot_time = jiffies; 1920 fc_fabric_login(vn_port); 1921 fc_vport_setlink(vn_port); 1922 } 1923 1924 /* Set symbolic node name */ 1925 if (base_qedf->pdev->device == QL45xxx) 1926 snprintf(fc_host_symbolic_name(vn_port->host), 256, 1927 "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION); 1928 1929 if (base_qedf->pdev->device == QL41xxx) 1930 snprintf(fc_host_symbolic_name(vn_port->host), 256, 1931 "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION); 1932 1933 /* Set supported speed */ 1934 fc_host_supported_speeds(vn_port->host) = n_port->link_supported_speeds; 1935 1936 /* Set speed */ 1937 vn_port->link_speed = n_port->link_speed; 1938 1939 /* Set port type */ 1940 fc_host_port_type(vn_port->host) = FC_PORTTYPE_NPIV; 1941 1942 /* Set maxframe size */ 1943 fc_host_maxframe_size(vn_port->host) = n_port->mfs; 1944 1945 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n", 1946 vn_port); 1947 1948 /* Set up debug context for vport */ 1949 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no; 1950 vport_qedf->dbg_ctx.pdev = base_qedf->pdev; 1951 1952 return 0; 1953 1954 err: 1955 scsi_host_put(vn_port->host); 1956 return rc; 1957 } 1958 1959 static int qedf_vport_destroy(struct fc_vport *vport) 1960 { 1961 struct Scsi_Host *shost = vport_to_shost(vport); 1962 struct fc_lport *n_port = shost_priv(shost); 1963 struct fc_lport *vn_port = vport->dd_data; 1964 struct qedf_ctx *qedf = lport_priv(vn_port); 1965 1966 if (!qedf) { 1967 QEDF_ERR(NULL, "qedf is NULL.\n"); 1968 goto out; 1969 } 1970 1971 /* Set unloading bit on vport qedf_ctx to prevent more I/O */ 1972 set_bit(QEDF_UNLOADING, &qedf->flags); 1973 1974 mutex_lock(&n_port->lp_mutex); 1975 list_del(&vn_port->list); 1976 mutex_unlock(&n_port->lp_mutex); 1977 1978 fc_fabric_logoff(vn_port); 1979 fc_lport_destroy(vn_port); 1980 1981 /* Detach from scsi-ml */ 1982 fc_remove_host(vn_port->host); 1983 scsi_remove_host(vn_port->host); 1984 1985 /* 1986 * Only try to release the exchange manager if the vn_port 1987 * configuration is complete. 1988 */ 1989 if (vn_port->state == LPORT_ST_READY) 1990 fc_exch_mgr_free(vn_port); 1991 1992 /* Free memory used by statistical counters */ 1993 fc_lport_free_stats(vn_port); 1994 1995 /* Release Scsi_Host */ 1996 scsi_host_put(vn_port->host); 1997 1998 out: 1999 return 0; 2000 } 2001 2002 static int qedf_vport_disable(struct fc_vport *vport, bool disable) 2003 { 2004 struct fc_lport *lport = vport->dd_data; 2005 2006 if (disable) { 2007 fc_vport_set_state(vport, FC_VPORT_DISABLED); 2008 fc_fabric_logoff(lport); 2009 } else { 2010 lport->boot_time = jiffies; 2011 fc_fabric_login(lport); 2012 fc_vport_setlink(lport); 2013 } 2014 return 0; 2015 } 2016 2017 /* 2018 * During removal we need to wait for all the vports associated with a port 2019 * to be destroyed so we avoid a race condition where libfc is still trying 2020 * to reap vports while the driver remove function has already reaped the 2021 * driver contexts associated with the physical port. 2022 */ 2023 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf) 2024 { 2025 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host); 2026 2027 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 2028 "Entered.\n"); 2029 while (fc_host->npiv_vports_inuse > 0) { 2030 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 2031 "Waiting for all vports to be reaped.\n"); 2032 msleep(1000); 2033 } 2034 } 2035 2036 /** 2037 * qedf_fcoe_reset - Resets the fcoe 2038 * 2039 * @shost: shost the reset is from 2040 * 2041 * Returns: always 0 2042 */ 2043 static int qedf_fcoe_reset(struct Scsi_Host *shost) 2044 { 2045 struct fc_lport *lport = shost_priv(shost); 2046 2047 qedf_ctx_soft_reset(lport); 2048 return 0; 2049 } 2050 2051 static void qedf_get_host_port_id(struct Scsi_Host *shost) 2052 { 2053 struct fc_lport *lport = shost_priv(shost); 2054 2055 fc_host_port_id(shost) = lport->port_id; 2056 } 2057 2058 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host 2059 *shost) 2060 { 2061 struct fc_host_statistics *qedf_stats; 2062 struct fc_lport *lport = shost_priv(shost); 2063 struct qedf_ctx *qedf = lport_priv(lport); 2064 struct qed_fcoe_stats *fw_fcoe_stats; 2065 2066 qedf_stats = fc_get_host_stats(shost); 2067 2068 /* We don't collect offload stats for specific NPIV ports */ 2069 if (lport->vport) 2070 goto out; 2071 2072 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL); 2073 if (!fw_fcoe_stats) { 2074 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for " 2075 "fw_fcoe_stats.\n"); 2076 goto out; 2077 } 2078 2079 mutex_lock(&qedf->stats_mutex); 2080 2081 /* Query firmware for offload stats */ 2082 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats); 2083 2084 /* 2085 * The expectation is that we add our offload stats to the stats 2086 * being maintained by libfc each time the fc_get_host_status callback 2087 * is invoked. The additions are not carried over for each call to 2088 * the fc_get_host_stats callback. 2089 */ 2090 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt + 2091 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt + 2092 fw_fcoe_stats->fcoe_tx_other_pkt_cnt; 2093 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt + 2094 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt + 2095 fw_fcoe_stats->fcoe_rx_other_pkt_cnt; 2096 qedf_stats->fcp_input_megabytes += 2097 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000); 2098 qedf_stats->fcp_output_megabytes += 2099 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000); 2100 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4; 2101 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4; 2102 qedf_stats->invalid_crc_count += 2103 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt; 2104 qedf_stats->dumped_frames = 2105 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 2106 qedf_stats->error_frames += 2107 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 2108 qedf_stats->fcp_input_requests += qedf->input_requests; 2109 qedf_stats->fcp_output_requests += qedf->output_requests; 2110 qedf_stats->fcp_control_requests += qedf->control_requests; 2111 qedf_stats->fcp_packet_aborts += qedf->packet_aborts; 2112 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures; 2113 2114 mutex_unlock(&qedf->stats_mutex); 2115 kfree(fw_fcoe_stats); 2116 out: 2117 return qedf_stats; 2118 } 2119 2120 static struct fc_function_template qedf_fc_transport_fn = { 2121 .show_host_node_name = 1, 2122 .show_host_port_name = 1, 2123 .show_host_supported_classes = 1, 2124 .show_host_supported_fc4s = 1, 2125 .show_host_active_fc4s = 1, 2126 .show_host_maxframe_size = 1, 2127 2128 .get_host_port_id = qedf_get_host_port_id, 2129 .show_host_port_id = 1, 2130 .show_host_supported_speeds = 1, 2131 .get_host_speed = fc_get_host_speed, 2132 .show_host_speed = 1, 2133 .show_host_port_type = 1, 2134 .get_host_port_state = fc_get_host_port_state, 2135 .show_host_port_state = 1, 2136 .show_host_symbolic_name = 1, 2137 2138 /* 2139 * Tell FC transport to allocate enough space to store the backpointer 2140 * for the associate qedf_rport struct. 2141 */ 2142 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2143 sizeof(struct qedf_rport)), 2144 .show_rport_maxframe_size = 1, 2145 .show_rport_supported_classes = 1, 2146 .show_host_fabric_name = 1, 2147 .show_starget_node_name = 1, 2148 .show_starget_port_name = 1, 2149 .show_starget_port_id = 1, 2150 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2151 .show_rport_dev_loss_tmo = 1, 2152 .get_fc_host_stats = qedf_fc_get_host_stats, 2153 .issue_fc_host_lip = qedf_fcoe_reset, 2154 .vport_create = qedf_vport_create, 2155 .vport_delete = qedf_vport_destroy, 2156 .vport_disable = qedf_vport_disable, 2157 .bsg_request = fc_lport_bsg_request, 2158 }; 2159 2160 static struct fc_function_template qedf_fc_vport_transport_fn = { 2161 .show_host_node_name = 1, 2162 .show_host_port_name = 1, 2163 .show_host_supported_classes = 1, 2164 .show_host_supported_fc4s = 1, 2165 .show_host_active_fc4s = 1, 2166 .show_host_maxframe_size = 1, 2167 .show_host_port_id = 1, 2168 .show_host_supported_speeds = 1, 2169 .get_host_speed = fc_get_host_speed, 2170 .show_host_speed = 1, 2171 .show_host_port_type = 1, 2172 .get_host_port_state = fc_get_host_port_state, 2173 .show_host_port_state = 1, 2174 .show_host_symbolic_name = 1, 2175 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2176 sizeof(struct qedf_rport)), 2177 .show_rport_maxframe_size = 1, 2178 .show_rport_supported_classes = 1, 2179 .show_host_fabric_name = 1, 2180 .show_starget_node_name = 1, 2181 .show_starget_port_name = 1, 2182 .show_starget_port_id = 1, 2183 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2184 .show_rport_dev_loss_tmo = 1, 2185 .get_fc_host_stats = fc_get_host_stats, 2186 .issue_fc_host_lip = qedf_fcoe_reset, 2187 .bsg_request = fc_lport_bsg_request, 2188 }; 2189 2190 static bool qedf_fp_has_work(struct qedf_fastpath *fp) 2191 { 2192 struct qedf_ctx *qedf = fp->qedf; 2193 struct global_queue *que; 2194 struct qed_sb_info *sb_info = fp->sb_info; 2195 struct status_block *sb = sb_info->sb_virt; 2196 u16 prod_idx; 2197 2198 /* Get the pointer to the global CQ this completion is on */ 2199 que = qedf->global_queues[fp->sb_id]; 2200 2201 /* Be sure all responses have been written to PI */ 2202 rmb(); 2203 2204 /* Get the current firmware producer index */ 2205 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2206 2207 return (que->cq_prod_idx != prod_idx); 2208 } 2209 2210 /* 2211 * Interrupt handler code. 2212 */ 2213 2214 /* Process completion queue and copy CQE contents for deferred processesing 2215 * 2216 * Return true if we should wake the I/O thread, false if not. 2217 */ 2218 static bool qedf_process_completions(struct qedf_fastpath *fp) 2219 { 2220 struct qedf_ctx *qedf = fp->qedf; 2221 struct qed_sb_info *sb_info = fp->sb_info; 2222 struct status_block *sb = sb_info->sb_virt; 2223 struct global_queue *que; 2224 u16 prod_idx; 2225 struct fcoe_cqe *cqe; 2226 struct qedf_io_work *io_work; 2227 int num_handled = 0; 2228 unsigned int cpu; 2229 struct qedf_ioreq *io_req = NULL; 2230 u16 xid; 2231 u16 new_cqes; 2232 u32 comp_type; 2233 2234 /* Get the current firmware producer index */ 2235 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2236 2237 /* Get the pointer to the global CQ this completion is on */ 2238 que = qedf->global_queues[fp->sb_id]; 2239 2240 /* Calculate the amount of new elements since last processing */ 2241 new_cqes = (prod_idx >= que->cq_prod_idx) ? 2242 (prod_idx - que->cq_prod_idx) : 2243 0x10000 - que->cq_prod_idx + prod_idx; 2244 2245 /* Save producer index */ 2246 que->cq_prod_idx = prod_idx; 2247 2248 while (new_cqes) { 2249 fp->completions++; 2250 num_handled++; 2251 cqe = &que->cq[que->cq_cons_idx]; 2252 2253 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2254 FCOE_CQE_CQE_TYPE_MASK; 2255 2256 /* 2257 * Process unsolicited CQEs directly in the interrupt handler 2258 * sine we need the fastpath ID 2259 */ 2260 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) { 2261 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL, 2262 "Unsolicated CQE.\n"); 2263 qedf_process_unsol_compl(qedf, fp->sb_id, cqe); 2264 /* 2265 * Don't add a work list item. Increment consumer 2266 * consumer index and move on. 2267 */ 2268 goto inc_idx; 2269 } 2270 2271 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2272 io_req = &qedf->cmd_mgr->cmds[xid]; 2273 2274 /* 2275 * Figure out which percpu thread we should queue this I/O 2276 * on. 2277 */ 2278 if (!io_req) 2279 /* If there is not io_req assocated with this CQE 2280 * just queue it on CPU 0 2281 */ 2282 cpu = 0; 2283 else { 2284 cpu = io_req->cpu; 2285 io_req->int_cpu = smp_processor_id(); 2286 } 2287 2288 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC); 2289 if (!io_work) { 2290 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate " 2291 "work for I/O completion.\n"); 2292 continue; 2293 } 2294 memset(io_work, 0, sizeof(struct qedf_io_work)); 2295 2296 INIT_WORK(&io_work->work, qedf_fp_io_handler); 2297 2298 /* Copy contents of CQE for deferred processing */ 2299 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe)); 2300 2301 io_work->qedf = fp->qedf; 2302 io_work->fp = NULL; /* Only used for unsolicited frames */ 2303 2304 queue_work_on(cpu, qedf_io_wq, &io_work->work); 2305 2306 inc_idx: 2307 que->cq_cons_idx++; 2308 if (que->cq_cons_idx == fp->cq_num_entries) 2309 que->cq_cons_idx = 0; 2310 new_cqes--; 2311 } 2312 2313 return true; 2314 } 2315 2316 2317 /* MSI-X fastpath handler code */ 2318 static irqreturn_t qedf_msix_handler(int irq, void *dev_id) 2319 { 2320 struct qedf_fastpath *fp = dev_id; 2321 2322 if (!fp) { 2323 QEDF_ERR(NULL, "fp is null.\n"); 2324 return IRQ_HANDLED; 2325 } 2326 if (!fp->sb_info) { 2327 QEDF_ERR(NULL, "fp->sb_info in null."); 2328 return IRQ_HANDLED; 2329 } 2330 2331 /* 2332 * Disable interrupts for this status block while we process new 2333 * completions 2334 */ 2335 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/); 2336 2337 while (1) { 2338 qedf_process_completions(fp); 2339 2340 if (qedf_fp_has_work(fp) == 0) { 2341 /* Update the sb information */ 2342 qed_sb_update_sb_idx(fp->sb_info); 2343 2344 /* Check for more work */ 2345 rmb(); 2346 2347 if (qedf_fp_has_work(fp) == 0) { 2348 /* Re-enable interrupts */ 2349 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 2350 return IRQ_HANDLED; 2351 } 2352 } 2353 } 2354 2355 /* Do we ever want to break out of above loop? */ 2356 return IRQ_HANDLED; 2357 } 2358 2359 /* simd handler for MSI/INTa */ 2360 static void qedf_simd_int_handler(void *cookie) 2361 { 2362 /* Cookie is qedf_ctx struct */ 2363 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2364 2365 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf); 2366 } 2367 2368 #define QEDF_SIMD_HANDLER_NUM 0 2369 static void qedf_sync_free_irqs(struct qedf_ctx *qedf) 2370 { 2371 int i; 2372 u16 vector_idx = 0; 2373 u32 vector; 2374 2375 if (qedf->int_info.msix_cnt) { 2376 for (i = 0; i < qedf->int_info.used_cnt; i++) { 2377 vector_idx = i * qedf->dev_info.common.num_hwfns + 2378 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2379 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2380 "Freeing IRQ #%d vector_idx=%d.\n", 2381 i, vector_idx); 2382 vector = qedf->int_info.msix[vector_idx].vector; 2383 synchronize_irq(vector); 2384 irq_set_affinity_hint(vector, NULL); 2385 irq_set_affinity_notifier(vector, NULL); 2386 free_irq(vector, &qedf->fp_array[i]); 2387 } 2388 } else 2389 qed_ops->common->simd_handler_clean(qedf->cdev, 2390 QEDF_SIMD_HANDLER_NUM); 2391 2392 qedf->int_info.used_cnt = 0; 2393 qed_ops->common->set_fp_int(qedf->cdev, 0); 2394 } 2395 2396 static int qedf_request_msix_irq(struct qedf_ctx *qedf) 2397 { 2398 int i, rc, cpu; 2399 u16 vector_idx = 0; 2400 u32 vector; 2401 2402 cpu = cpumask_first(cpu_online_mask); 2403 for (i = 0; i < qedf->num_queues; i++) { 2404 vector_idx = i * qedf->dev_info.common.num_hwfns + 2405 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2406 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2407 "Requesting IRQ #%d vector_idx=%d.\n", 2408 i, vector_idx); 2409 vector = qedf->int_info.msix[vector_idx].vector; 2410 rc = request_irq(vector, qedf_msix_handler, 0, "qedf", 2411 &qedf->fp_array[i]); 2412 2413 if (rc) { 2414 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n"); 2415 qedf_sync_free_irqs(qedf); 2416 return rc; 2417 } 2418 2419 qedf->int_info.used_cnt++; 2420 rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu)); 2421 cpu = cpumask_next(cpu, cpu_online_mask); 2422 } 2423 2424 return 0; 2425 } 2426 2427 static int qedf_setup_int(struct qedf_ctx *qedf) 2428 { 2429 int rc = 0; 2430 2431 /* 2432 * Learn interrupt configuration 2433 */ 2434 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus()); 2435 if (rc <= 0) 2436 return 0; 2437 2438 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info); 2439 if (rc) 2440 return 0; 2441 2442 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = " 2443 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt, 2444 num_online_cpus()); 2445 2446 if (qedf->int_info.msix_cnt) 2447 return qedf_request_msix_irq(qedf); 2448 2449 qed_ops->common->simd_handler_config(qedf->cdev, &qedf, 2450 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler); 2451 qedf->int_info.used_cnt = 1; 2452 2453 QEDF_ERR(&qedf->dbg_ctx, 2454 "Cannot load driver due to a lack of MSI-X vectors.\n"); 2455 return -EINVAL; 2456 } 2457 2458 /* Main function for libfc frame reception */ 2459 static void qedf_recv_frame(struct qedf_ctx *qedf, 2460 struct sk_buff *skb) 2461 { 2462 u32 fr_len; 2463 struct fc_lport *lport; 2464 struct fc_frame_header *fh; 2465 struct fcoe_crc_eof crc_eof; 2466 struct fc_frame *fp; 2467 u8 *mac = NULL; 2468 u8 *dest_mac = NULL; 2469 struct fcoe_hdr *hp; 2470 struct qedf_rport *fcport; 2471 struct fc_lport *vn_port; 2472 u32 f_ctl; 2473 2474 lport = qedf->lport; 2475 if (lport == NULL || lport->state == LPORT_ST_DISABLED) { 2476 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n"); 2477 kfree_skb(skb); 2478 return; 2479 } 2480 2481 if (skb_is_nonlinear(skb)) 2482 skb_linearize(skb); 2483 mac = eth_hdr(skb)->h_source; 2484 dest_mac = eth_hdr(skb)->h_dest; 2485 2486 /* Pull the header */ 2487 hp = (struct fcoe_hdr *)skb->data; 2488 fh = (struct fc_frame_header *) skb_transport_header(skb); 2489 skb_pull(skb, sizeof(struct fcoe_hdr)); 2490 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 2491 2492 fp = (struct fc_frame *)skb; 2493 fc_frame_init(fp); 2494 fr_dev(fp) = lport; 2495 fr_sof(fp) = hp->fcoe_sof; 2496 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 2497 QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n"); 2498 kfree_skb(skb); 2499 return; 2500 } 2501 fr_eof(fp) = crc_eof.fcoe_eof; 2502 fr_crc(fp) = crc_eof.fcoe_crc32; 2503 if (pskb_trim(skb, fr_len)) { 2504 QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n"); 2505 kfree_skb(skb); 2506 return; 2507 } 2508 2509 fh = fc_frame_header_get(fp); 2510 2511 /* 2512 * Invalid frame filters. 2513 */ 2514 2515 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 2516 fh->fh_type == FC_TYPE_FCP) { 2517 /* Drop FCP data. We dont this in L2 path */ 2518 kfree_skb(skb); 2519 return; 2520 } 2521 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 2522 fh->fh_type == FC_TYPE_ELS) { 2523 switch (fc_frame_payload_op(fp)) { 2524 case ELS_LOGO: 2525 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 2526 /* drop non-FIP LOGO */ 2527 kfree_skb(skb); 2528 return; 2529 } 2530 break; 2531 } 2532 } 2533 2534 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 2535 /* Drop incoming ABTS */ 2536 kfree_skb(skb); 2537 return; 2538 } 2539 2540 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { 2541 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2542 "FC frame d_id mismatch with MAC %pM.\n", dest_mac); 2543 kfree_skb(skb); 2544 return; 2545 } 2546 2547 if (qedf->ctlr.state) { 2548 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) { 2549 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2550 "Wrong source address: mac:%pM dest_addr:%pM.\n", 2551 mac, qedf->ctlr.dest_addr); 2552 kfree_skb(skb); 2553 return; 2554 } 2555 } 2556 2557 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 2558 2559 /* 2560 * If the destination ID from the frame header does not match what we 2561 * have on record for lport and the search for a NPIV port came up 2562 * empty then this is not addressed to our port so simply drop it. 2563 */ 2564 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { 2565 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2566 "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n", 2567 lport->port_id, ntoh24(fh->fh_d_id)); 2568 kfree_skb(skb); 2569 return; 2570 } 2571 2572 f_ctl = ntoh24(fh->fh_f_ctl); 2573 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) && 2574 (f_ctl & FC_FC_EX_CTX)) { 2575 /* Drop incoming ABTS response that has both SEQ/EX CTX set */ 2576 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2577 "Dropping ABTS response as both SEQ/EX CTX set.\n"); 2578 kfree_skb(skb); 2579 return; 2580 } 2581 2582 /* 2583 * If a connection is uploading, drop incoming FCoE frames as there 2584 * is a small window where we could try to return a frame while libfc 2585 * is trying to clean things up. 2586 */ 2587 2588 /* Get fcport associated with d_id if it exists */ 2589 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 2590 2591 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 2592 &fcport->flags)) { 2593 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2594 "Connection uploading, dropping fp=%p.\n", fp); 2595 kfree_skb(skb); 2596 return; 2597 } 2598 2599 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: " 2600 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp, 2601 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, 2602 fh->fh_type); 2603 if (qedf_dump_frames) 2604 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 2605 1, skb->data, skb->len, false); 2606 fc_exch_recv(lport, fp); 2607 } 2608 2609 static void qedf_ll2_process_skb(struct work_struct *work) 2610 { 2611 struct qedf_skb_work *skb_work = 2612 container_of(work, struct qedf_skb_work, work); 2613 struct qedf_ctx *qedf = skb_work->qedf; 2614 struct sk_buff *skb = skb_work->skb; 2615 struct ethhdr *eh; 2616 2617 if (!qedf) { 2618 QEDF_ERR(NULL, "qedf is NULL\n"); 2619 goto err_out; 2620 } 2621 2622 eh = (struct ethhdr *)skb->data; 2623 2624 /* Undo VLAN encapsulation */ 2625 if (eh->h_proto == htons(ETH_P_8021Q)) { 2626 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); 2627 eh = skb_pull(skb, VLAN_HLEN); 2628 skb_reset_mac_header(skb); 2629 } 2630 2631 /* 2632 * Process either a FIP frame or FCoE frame based on the 2633 * protocol value. If it's not either just drop the 2634 * frame. 2635 */ 2636 if (eh->h_proto == htons(ETH_P_FIP)) { 2637 qedf_fip_recv(qedf, skb); 2638 goto out; 2639 } else if (eh->h_proto == htons(ETH_P_FCOE)) { 2640 __skb_pull(skb, ETH_HLEN); 2641 qedf_recv_frame(qedf, skb); 2642 goto out; 2643 } else 2644 goto err_out; 2645 2646 err_out: 2647 kfree_skb(skb); 2648 out: 2649 kfree(skb_work); 2650 return; 2651 } 2652 2653 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb, 2654 u32 arg1, u32 arg2) 2655 { 2656 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2657 struct qedf_skb_work *skb_work; 2658 2659 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 2660 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2661 "Dropping frame as link state is down.\n"); 2662 kfree_skb(skb); 2663 return 0; 2664 } 2665 2666 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC); 2667 if (!skb_work) { 2668 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so " 2669 "dropping frame.\n"); 2670 kfree_skb(skb); 2671 return 0; 2672 } 2673 2674 INIT_WORK(&skb_work->work, qedf_ll2_process_skb); 2675 skb_work->skb = skb; 2676 skb_work->qedf = qedf; 2677 queue_work(qedf->ll2_recv_wq, &skb_work->work); 2678 2679 return 0; 2680 } 2681 2682 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = { 2683 .rx_cb = qedf_ll2_rx, 2684 .tx_cb = NULL, 2685 }; 2686 2687 /* Main thread to process I/O completions */ 2688 void qedf_fp_io_handler(struct work_struct *work) 2689 { 2690 struct qedf_io_work *io_work = 2691 container_of(work, struct qedf_io_work, work); 2692 u32 comp_type; 2693 2694 /* 2695 * Deferred part of unsolicited CQE sends 2696 * frame to libfc. 2697 */ 2698 comp_type = (io_work->cqe.cqe_data >> 2699 FCOE_CQE_CQE_TYPE_SHIFT) & 2700 FCOE_CQE_CQE_TYPE_MASK; 2701 if (comp_type == FCOE_UNSOLIC_CQE_TYPE && 2702 io_work->fp) 2703 fc_exch_recv(io_work->qedf->lport, io_work->fp); 2704 else 2705 qedf_process_cqe(io_work->qedf, &io_work->cqe); 2706 2707 kfree(io_work); 2708 } 2709 2710 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf, 2711 struct qed_sb_info *sb_info, u16 sb_id) 2712 { 2713 struct status_block *sb_virt; 2714 dma_addr_t sb_phys; 2715 int ret; 2716 2717 sb_virt = dma_alloc_coherent(&qedf->pdev->dev, 2718 sizeof(struct status_block), &sb_phys, GFP_KERNEL); 2719 2720 if (!sb_virt) { 2721 QEDF_ERR(&qedf->dbg_ctx, 2722 "Status block allocation failed for id = %d.\n", 2723 sb_id); 2724 return -ENOMEM; 2725 } 2726 2727 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys, 2728 sb_id, QED_SB_TYPE_STORAGE); 2729 2730 if (ret) { 2731 QEDF_ERR(&qedf->dbg_ctx, 2732 "Status block initialization failed (0x%x) for id = %d.\n", 2733 ret, sb_id); 2734 return ret; 2735 } 2736 2737 return 0; 2738 } 2739 2740 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info) 2741 { 2742 if (sb_info->sb_virt) 2743 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt), 2744 (void *)sb_info->sb_virt, sb_info->sb_phys); 2745 } 2746 2747 static void qedf_destroy_sb(struct qedf_ctx *qedf) 2748 { 2749 int id; 2750 struct qedf_fastpath *fp = NULL; 2751 2752 for (id = 0; id < qedf->num_queues; id++) { 2753 fp = &(qedf->fp_array[id]); 2754 if (fp->sb_id == QEDF_SB_ID_NULL) 2755 break; 2756 qedf_free_sb(qedf, fp->sb_info); 2757 kfree(fp->sb_info); 2758 } 2759 kfree(qedf->fp_array); 2760 } 2761 2762 static int qedf_prepare_sb(struct qedf_ctx *qedf) 2763 { 2764 int id; 2765 struct qedf_fastpath *fp; 2766 int ret; 2767 2768 qedf->fp_array = 2769 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath), 2770 GFP_KERNEL); 2771 2772 if (!qedf->fp_array) { 2773 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation " 2774 "failed.\n"); 2775 return -ENOMEM; 2776 } 2777 2778 for (id = 0; id < qedf->num_queues; id++) { 2779 fp = &(qedf->fp_array[id]); 2780 fp->sb_id = QEDF_SB_ID_NULL; 2781 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL); 2782 if (!fp->sb_info) { 2783 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct " 2784 "allocation failed.\n"); 2785 goto err; 2786 } 2787 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id); 2788 if (ret) { 2789 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and " 2790 "initialization failed.\n"); 2791 goto err; 2792 } 2793 fp->sb_id = id; 2794 fp->qedf = qedf; 2795 fp->cq_num_entries = 2796 qedf->global_queues[id]->cq_mem_size / 2797 sizeof(struct fcoe_cqe); 2798 } 2799 err: 2800 return 0; 2801 } 2802 2803 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe) 2804 { 2805 u16 xid; 2806 struct qedf_ioreq *io_req; 2807 struct qedf_rport *fcport; 2808 u32 comp_type; 2809 2810 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2811 FCOE_CQE_CQE_TYPE_MASK; 2812 2813 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2814 io_req = &qedf->cmd_mgr->cmds[xid]; 2815 2816 /* Completion not for a valid I/O anymore so just return */ 2817 if (!io_req) { 2818 QEDF_ERR(&qedf->dbg_ctx, 2819 "io_req is NULL for xid=0x%x.\n", xid); 2820 return; 2821 } 2822 2823 fcport = io_req->fcport; 2824 2825 if (fcport == NULL) { 2826 QEDF_ERR(&qedf->dbg_ctx, 2827 "fcport is NULL for xid=0x%x io_req=%p.\n", 2828 xid, io_req); 2829 return; 2830 } 2831 2832 /* 2833 * Check that fcport is offloaded. If it isn't then the spinlock 2834 * isn't valid and shouldn't be taken. We should just return. 2835 */ 2836 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 2837 QEDF_ERR(&qedf->dbg_ctx, 2838 "Session not offloaded yet, fcport = %p.\n", fcport); 2839 return; 2840 } 2841 2842 2843 switch (comp_type) { 2844 case FCOE_GOOD_COMPLETION_CQE_TYPE: 2845 atomic_inc(&fcport->free_sqes); 2846 switch (io_req->cmd_type) { 2847 case QEDF_SCSI_CMD: 2848 qedf_scsi_completion(qedf, cqe, io_req); 2849 break; 2850 case QEDF_ELS: 2851 qedf_process_els_compl(qedf, cqe, io_req); 2852 break; 2853 case QEDF_TASK_MGMT_CMD: 2854 qedf_process_tmf_compl(qedf, cqe, io_req); 2855 break; 2856 case QEDF_SEQ_CLEANUP: 2857 qedf_process_seq_cleanup_compl(qedf, cqe, io_req); 2858 break; 2859 } 2860 break; 2861 case FCOE_ERROR_DETECTION_CQE_TYPE: 2862 atomic_inc(&fcport->free_sqes); 2863 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2864 "Error detect CQE.\n"); 2865 qedf_process_error_detect(qedf, cqe, io_req); 2866 break; 2867 case FCOE_EXCH_CLEANUP_CQE_TYPE: 2868 atomic_inc(&fcport->free_sqes); 2869 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2870 "Cleanup CQE.\n"); 2871 qedf_process_cleanup_compl(qedf, cqe, io_req); 2872 break; 2873 case FCOE_ABTS_CQE_TYPE: 2874 atomic_inc(&fcport->free_sqes); 2875 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2876 "Abort CQE.\n"); 2877 qedf_process_abts_compl(qedf, cqe, io_req); 2878 break; 2879 case FCOE_DUMMY_CQE_TYPE: 2880 atomic_inc(&fcport->free_sqes); 2881 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2882 "Dummy CQE.\n"); 2883 break; 2884 case FCOE_LOCAL_COMP_CQE_TYPE: 2885 atomic_inc(&fcport->free_sqes); 2886 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2887 "Local completion CQE.\n"); 2888 break; 2889 case FCOE_WARNING_CQE_TYPE: 2890 atomic_inc(&fcport->free_sqes); 2891 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2892 "Warning CQE.\n"); 2893 qedf_process_warning_compl(qedf, cqe, io_req); 2894 break; 2895 case MAX_FCOE_CQE_TYPE: 2896 atomic_inc(&fcport->free_sqes); 2897 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2898 "Max FCoE CQE.\n"); 2899 break; 2900 default: 2901 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2902 "Default CQE.\n"); 2903 break; 2904 } 2905 } 2906 2907 static void qedf_free_bdq(struct qedf_ctx *qedf) 2908 { 2909 int i; 2910 2911 if (qedf->bdq_pbl_list) 2912 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE, 2913 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma); 2914 2915 if (qedf->bdq_pbl) 2916 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size, 2917 qedf->bdq_pbl, qedf->bdq_pbl_dma); 2918 2919 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2920 if (qedf->bdq[i].buf_addr) { 2921 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE, 2922 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma); 2923 } 2924 } 2925 } 2926 2927 static void qedf_free_global_queues(struct qedf_ctx *qedf) 2928 { 2929 int i; 2930 struct global_queue **gl = qedf->global_queues; 2931 2932 for (i = 0; i < qedf->num_queues; i++) { 2933 if (!gl[i]) 2934 continue; 2935 2936 if (gl[i]->cq) 2937 dma_free_coherent(&qedf->pdev->dev, 2938 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma); 2939 if (gl[i]->cq_pbl) 2940 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size, 2941 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 2942 2943 kfree(gl[i]); 2944 } 2945 2946 qedf_free_bdq(qedf); 2947 } 2948 2949 static int qedf_alloc_bdq(struct qedf_ctx *qedf) 2950 { 2951 int i; 2952 struct scsi_bd *pbl; 2953 u64 *list; 2954 dma_addr_t page; 2955 2956 /* Alloc dma memory for BDQ buffers */ 2957 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2958 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev, 2959 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL); 2960 if (!qedf->bdq[i].buf_addr) { 2961 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ " 2962 "buffer %d.\n", i); 2963 return -ENOMEM; 2964 } 2965 } 2966 2967 /* Alloc dma memory for BDQ page buffer list */ 2968 qedf->bdq_pbl_mem_size = 2969 QEDF_BDQ_SIZE * sizeof(struct scsi_bd); 2970 qedf->bdq_pbl_mem_size = 2971 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE); 2972 2973 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 2974 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL); 2975 if (!qedf->bdq_pbl) { 2976 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n"); 2977 return -ENOMEM; 2978 } 2979 2980 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2981 "BDQ PBL addr=0x%p dma=%pad\n", 2982 qedf->bdq_pbl, &qedf->bdq_pbl_dma); 2983 2984 /* 2985 * Populate BDQ PBL with physical and virtual address of individual 2986 * BDQ buffers 2987 */ 2988 pbl = (struct scsi_bd *)qedf->bdq_pbl; 2989 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2990 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma)); 2991 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma)); 2992 pbl->opaque.fcoe_opaque.hi = 0; 2993 /* Opaque lo data is an index into the BDQ array */ 2994 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i); 2995 pbl++; 2996 } 2997 2998 /* Allocate list of PBL pages */ 2999 qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev, 3000 QEDF_PAGE_SIZE, 3001 &qedf->bdq_pbl_list_dma, 3002 GFP_KERNEL); 3003 if (!qedf->bdq_pbl_list) { 3004 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n"); 3005 return -ENOMEM; 3006 } 3007 3008 /* 3009 * Now populate PBL list with pages that contain pointers to the 3010 * individual buffers. 3011 */ 3012 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size / 3013 QEDF_PAGE_SIZE; 3014 list = (u64 *)qedf->bdq_pbl_list; 3015 page = qedf->bdq_pbl_list_dma; 3016 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) { 3017 *list = qedf->bdq_pbl_dma; 3018 list++; 3019 page += QEDF_PAGE_SIZE; 3020 } 3021 3022 return 0; 3023 } 3024 3025 static int qedf_alloc_global_queues(struct qedf_ctx *qedf) 3026 { 3027 u32 *list; 3028 int i; 3029 int status; 3030 u32 *pbl; 3031 dma_addr_t page; 3032 int num_pages; 3033 3034 /* Allocate and map CQs, RQs */ 3035 /* 3036 * Number of global queues (CQ / RQ). This should 3037 * be <= number of available MSIX vectors for the PF 3038 */ 3039 if (!qedf->num_queues) { 3040 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n"); 3041 return -ENOMEM; 3042 } 3043 3044 /* 3045 * Make sure we allocated the PBL that will contain the physical 3046 * addresses of our queues 3047 */ 3048 if (!qedf->p_cpuq) { 3049 status = -EINVAL; 3050 QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n"); 3051 goto mem_alloc_failure; 3052 } 3053 3054 qedf->global_queues = kzalloc((sizeof(struct global_queue *) 3055 * qedf->num_queues), GFP_KERNEL); 3056 if (!qedf->global_queues) { 3057 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global " 3058 "queues array ptr memory\n"); 3059 return -ENOMEM; 3060 } 3061 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3062 "qedf->global_queues=%p.\n", qedf->global_queues); 3063 3064 /* Allocate DMA coherent buffers for BDQ */ 3065 status = qedf_alloc_bdq(qedf); 3066 if (status) { 3067 QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n"); 3068 goto mem_alloc_failure; 3069 } 3070 3071 /* Allocate a CQ and an associated PBL for each MSI-X vector */ 3072 for (i = 0; i < qedf->num_queues; i++) { 3073 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue), 3074 GFP_KERNEL); 3075 if (!qedf->global_queues[i]) { 3076 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate " 3077 "global queue %d.\n", i); 3078 status = -ENOMEM; 3079 goto mem_alloc_failure; 3080 } 3081 3082 qedf->global_queues[i]->cq_mem_size = 3083 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3084 qedf->global_queues[i]->cq_mem_size = 3085 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE); 3086 3087 qedf->global_queues[i]->cq_pbl_size = 3088 (qedf->global_queues[i]->cq_mem_size / 3089 PAGE_SIZE) * sizeof(void *); 3090 qedf->global_queues[i]->cq_pbl_size = 3091 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE); 3092 3093 qedf->global_queues[i]->cq = 3094 dma_alloc_coherent(&qedf->pdev->dev, 3095 qedf->global_queues[i]->cq_mem_size, 3096 &qedf->global_queues[i]->cq_dma, 3097 GFP_KERNEL); 3098 3099 if (!qedf->global_queues[i]->cq) { 3100 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n"); 3101 status = -ENOMEM; 3102 goto mem_alloc_failure; 3103 } 3104 3105 qedf->global_queues[i]->cq_pbl = 3106 dma_alloc_coherent(&qedf->pdev->dev, 3107 qedf->global_queues[i]->cq_pbl_size, 3108 &qedf->global_queues[i]->cq_pbl_dma, 3109 GFP_KERNEL); 3110 3111 if (!qedf->global_queues[i]->cq_pbl) { 3112 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n"); 3113 status = -ENOMEM; 3114 goto mem_alloc_failure; 3115 } 3116 3117 /* Create PBL */ 3118 num_pages = qedf->global_queues[i]->cq_mem_size / 3119 QEDF_PAGE_SIZE; 3120 page = qedf->global_queues[i]->cq_dma; 3121 pbl = (u32 *)qedf->global_queues[i]->cq_pbl; 3122 3123 while (num_pages--) { 3124 *pbl = U64_LO(page); 3125 pbl++; 3126 *pbl = U64_HI(page); 3127 pbl++; 3128 page += QEDF_PAGE_SIZE; 3129 } 3130 /* Set the initial consumer index for cq */ 3131 qedf->global_queues[i]->cq_cons_idx = 0; 3132 } 3133 3134 list = (u32 *)qedf->p_cpuq; 3135 3136 /* 3137 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 3138 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 3139 * to the physical address which contains an array of pointers to 3140 * the physical addresses of the specific queue pages. 3141 */ 3142 for (i = 0; i < qedf->num_queues; i++) { 3143 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma); 3144 list++; 3145 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma); 3146 list++; 3147 *list = U64_LO(0); 3148 list++; 3149 *list = U64_HI(0); 3150 list++; 3151 } 3152 3153 return 0; 3154 3155 mem_alloc_failure: 3156 qedf_free_global_queues(qedf); 3157 return status; 3158 } 3159 3160 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf) 3161 { 3162 u8 sq_num_pbl_pages; 3163 u32 sq_mem_size; 3164 u32 cq_mem_size; 3165 u32 cq_num_entries; 3166 int rval; 3167 3168 /* 3169 * The number of completion queues/fastpath interrupts/status blocks 3170 * we allocation is the minimum off: 3171 * 3172 * Number of CPUs 3173 * Number allocated by qed for our PCI function 3174 */ 3175 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf); 3176 3177 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n", 3178 qedf->num_queues); 3179 3180 qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev, 3181 qedf->num_queues * sizeof(struct qedf_glbl_q_params), 3182 &qedf->hw_p_cpuq, GFP_KERNEL); 3183 3184 if (!qedf->p_cpuq) { 3185 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n"); 3186 return 1; 3187 } 3188 3189 rval = qedf_alloc_global_queues(qedf); 3190 if (rval) { 3191 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation " 3192 "failed.\n"); 3193 return 1; 3194 } 3195 3196 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */ 3197 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 3198 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE); 3199 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE); 3200 3201 /* Calculate CQ num entries */ 3202 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3203 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE); 3204 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe); 3205 3206 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params)); 3207 3208 /* Setup the value for fcoe PF */ 3209 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS; 3210 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS; 3211 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr = 3212 (u64)qedf->hw_p_cpuq; 3213 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages; 3214 3215 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0; 3216 3217 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries; 3218 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues; 3219 3220 /* log_page_size: 12 for 4KB pages */ 3221 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE); 3222 3223 qedf->pf_params.fcoe_pf_params.mtu = 9000; 3224 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI; 3225 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI; 3226 3227 /* BDQ address and size */ 3228 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] = 3229 qedf->bdq_pbl_list_dma; 3230 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] = 3231 qedf->bdq_pbl_list_num_entries; 3232 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE; 3233 3234 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3235 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n", 3236 qedf->bdq_pbl_list, 3237 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0], 3238 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]); 3239 3240 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3241 "cq_num_entries=%d.\n", 3242 qedf->pf_params.fcoe_pf_params.cq_num_entries); 3243 3244 return 0; 3245 } 3246 3247 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 3248 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf) 3249 { 3250 size_t size = 0; 3251 3252 if (qedf->p_cpuq) { 3253 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params); 3254 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq, 3255 qedf->hw_p_cpuq); 3256 } 3257 3258 qedf_free_global_queues(qedf); 3259 3260 kfree(qedf->global_queues); 3261 } 3262 3263 /* 3264 * PCI driver functions 3265 */ 3266 3267 static const struct pci_device_id qedf_pci_tbl[] = { 3268 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) }, 3269 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) }, 3270 {0} 3271 }; 3272 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl); 3273 3274 static struct pci_driver qedf_pci_driver = { 3275 .name = QEDF_MODULE_NAME, 3276 .id_table = qedf_pci_tbl, 3277 .probe = qedf_probe, 3278 .remove = qedf_remove, 3279 .shutdown = qedf_shutdown, 3280 }; 3281 3282 static int __qedf_probe(struct pci_dev *pdev, int mode) 3283 { 3284 int rc = -EINVAL; 3285 struct fc_lport *lport; 3286 struct qedf_ctx *qedf = NULL; 3287 struct Scsi_Host *host; 3288 bool is_vf = false; 3289 struct qed_ll2_params params; 3290 char host_buf[20]; 3291 struct qed_link_params link_params; 3292 int status; 3293 void *task_start, *task_end; 3294 struct qed_slowpath_params slowpath_params; 3295 struct qed_probe_params qed_params; 3296 u16 retry_cnt = 10; 3297 3298 /* 3299 * When doing error recovery we didn't reap the lport so don't try 3300 * to reallocate it. 3301 */ 3302 retry_probe: 3303 if (mode == QEDF_MODE_RECOVERY) 3304 msleep(2000); 3305 3306 if (mode != QEDF_MODE_RECOVERY) { 3307 lport = libfc_host_alloc(&qedf_host_template, 3308 sizeof(struct qedf_ctx)); 3309 3310 if (!lport) { 3311 QEDF_ERR(NULL, "Could not allocate lport.\n"); 3312 rc = -ENOMEM; 3313 goto err0; 3314 } 3315 3316 fc_disc_init(lport); 3317 3318 /* Initialize qedf_ctx */ 3319 qedf = lport_priv(lport); 3320 set_bit(QEDF_PROBING, &qedf->flags); 3321 qedf->lport = lport; 3322 qedf->ctlr.lp = lport; 3323 qedf->pdev = pdev; 3324 qedf->dbg_ctx.pdev = pdev; 3325 qedf->dbg_ctx.host_no = lport->host->host_no; 3326 spin_lock_init(&qedf->hba_lock); 3327 INIT_LIST_HEAD(&qedf->fcports); 3328 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1; 3329 atomic_set(&qedf->num_offloads, 0); 3330 qedf->stop_io_on_error = false; 3331 pci_set_drvdata(pdev, qedf); 3332 init_completion(&qedf->fipvlan_compl); 3333 mutex_init(&qedf->stats_mutex); 3334 mutex_init(&qedf->flush_mutex); 3335 qedf->flogi_pending = 0; 3336 3337 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, 3338 "QLogic FastLinQ FCoE Module qedf %s, " 3339 "FW %d.%d.%d.%d\n", QEDF_VERSION, 3340 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 3341 FW_ENGINEERING_VERSION); 3342 } else { 3343 /* Init pointers during recovery */ 3344 qedf = pci_get_drvdata(pdev); 3345 set_bit(QEDF_PROBING, &qedf->flags); 3346 lport = qedf->lport; 3347 } 3348 3349 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n"); 3350 3351 host = lport->host; 3352 3353 /* Allocate mempool for qedf_io_work structs */ 3354 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN, 3355 qedf_io_work_cache); 3356 if (qedf->io_mempool == NULL) { 3357 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n"); 3358 goto err1; 3359 } 3360 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n", 3361 qedf->io_mempool); 3362 3363 sprintf(host_buf, "qedf_%u_link", 3364 qedf->lport->host->host_no); 3365 qedf->link_update_wq = create_workqueue(host_buf); 3366 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update); 3367 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery); 3368 INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump); 3369 INIT_DELAYED_WORK(&qedf->stag_work, qedf_stag_change_work); 3370 qedf->fipvlan_retries = qedf_fipvlan_retries; 3371 /* Set a default prio in case DCBX doesn't converge */ 3372 if (qedf_default_prio > -1) { 3373 /* 3374 * This is the case where we pass a modparam in so we want to 3375 * honor it even if dcbx doesn't converge. 3376 */ 3377 qedf->prio = qedf_default_prio; 3378 } else 3379 qedf->prio = QEDF_DEFAULT_PRIO; 3380 3381 /* 3382 * Common probe. Takes care of basic hardware init and pci_* 3383 * functions. 3384 */ 3385 memset(&qed_params, 0, sizeof(qed_params)); 3386 qed_params.protocol = QED_PROTOCOL_FCOE; 3387 qed_params.dp_module = qedf_dp_module; 3388 qed_params.dp_level = qedf_dp_level; 3389 qed_params.is_vf = is_vf; 3390 qedf->cdev = qed_ops->common->probe(pdev, &qed_params); 3391 if (!qedf->cdev) { 3392 if ((mode == QEDF_MODE_RECOVERY) && retry_cnt) { 3393 QEDF_ERR(&qedf->dbg_ctx, 3394 "Retry %d initialize hardware\n", retry_cnt); 3395 retry_cnt--; 3396 goto retry_probe; 3397 } 3398 QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n"); 3399 rc = -ENODEV; 3400 goto err1; 3401 } 3402 3403 /* Learn information crucial for qedf to progress */ 3404 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3405 if (rc) { 3406 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n"); 3407 goto err1; 3408 } 3409 3410 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 3411 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n", 3412 qedf->dev_info.common.num_hwfns, 3413 qed_ops->common->get_affin_hwfn_idx(qedf->cdev)); 3414 3415 /* queue allocation code should come here 3416 * order should be 3417 * slowpath_start 3418 * status block allocation 3419 * interrupt registration (to get min number of queues) 3420 * set_fcoe_pf_param 3421 * qed_sp_fcoe_func_start 3422 */ 3423 rc = qedf_set_fcoe_pf_param(qedf); 3424 if (rc) { 3425 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n"); 3426 goto err2; 3427 } 3428 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3429 3430 /* Learn information crucial for qedf to progress */ 3431 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3432 if (rc) { 3433 QEDF_ERR(&qedf->dbg_ctx, "Failed to fill dev info.\n"); 3434 goto err2; 3435 } 3436 3437 if (mode != QEDF_MODE_RECOVERY) { 3438 qedf->devlink = qed_ops->common->devlink_register(qedf->cdev); 3439 if (IS_ERR(qedf->devlink)) { 3440 QEDF_ERR(&qedf->dbg_ctx, "Cannot register devlink\n"); 3441 rc = PTR_ERR(qedf->devlink); 3442 qedf->devlink = NULL; 3443 goto err2; 3444 } 3445 } 3446 3447 /* Record BDQ producer doorbell addresses */ 3448 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr; 3449 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr; 3450 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3451 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod, 3452 qedf->bdq_secondary_prod); 3453 3454 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf); 3455 3456 rc = qedf_prepare_sb(qedf); 3457 if (rc) { 3458 3459 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3460 goto err2; 3461 } 3462 3463 /* Start the Slowpath-process */ 3464 slowpath_params.int_mode = QED_INT_MODE_MSIX; 3465 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER; 3466 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER; 3467 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER; 3468 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER; 3469 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE); 3470 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params); 3471 if (rc) { 3472 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3473 goto err2; 3474 } 3475 3476 /* 3477 * update_pf_params needs to be called before and after slowpath 3478 * start 3479 */ 3480 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3481 3482 /* Setup interrupts */ 3483 rc = qedf_setup_int(qedf); 3484 if (rc) { 3485 QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n"); 3486 goto err3; 3487 } 3488 3489 rc = qed_ops->start(qedf->cdev, &qedf->tasks); 3490 if (rc) { 3491 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n"); 3492 goto err4; 3493 } 3494 task_start = qedf_get_task_mem(&qedf->tasks, 0); 3495 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1); 3496 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, " 3497 "end=%p block_size=%u.\n", task_start, task_end, 3498 qedf->tasks.size); 3499 3500 /* 3501 * We need to write the number of BDs in the BDQ we've preallocated so 3502 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 3503 * packet arrives. 3504 */ 3505 qedf->bdq_prod_idx = QEDF_BDQ_SIZE; 3506 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3507 "Writing %d to primary and secondary BDQ doorbell registers.\n", 3508 qedf->bdq_prod_idx); 3509 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod); 3510 readw(qedf->bdq_primary_prod); 3511 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod); 3512 readw(qedf->bdq_secondary_prod); 3513 3514 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3515 3516 /* Now that the dev_info struct has been filled in set the MAC 3517 * address 3518 */ 3519 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac); 3520 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n", 3521 qedf->mac); 3522 3523 /* 3524 * Set the WWNN and WWPN in the following way: 3525 * 3526 * If the info we get from qed is non-zero then use that to set the 3527 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based 3528 * on the MAC address. 3529 */ 3530 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) { 3531 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3532 "Setting WWPN and WWNN from qed dev_info.\n"); 3533 qedf->wwnn = qedf->dev_info.wwnn; 3534 qedf->wwpn = qedf->dev_info.wwpn; 3535 } else { 3536 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3537 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n"); 3538 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0); 3539 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0); 3540 } 3541 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx " 3542 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn); 3543 3544 sprintf(host_buf, "host_%d", host->host_no); 3545 qed_ops->common->set_name(qedf->cdev, host_buf); 3546 3547 /* Allocate cmd mgr */ 3548 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf); 3549 if (!qedf->cmd_mgr) { 3550 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n"); 3551 rc = -ENOMEM; 3552 goto err5; 3553 } 3554 3555 if (mode != QEDF_MODE_RECOVERY) { 3556 host->transportt = qedf_fc_transport_template; 3557 host->max_lun = qedf_max_lun; 3558 host->max_cmd_len = QEDF_MAX_CDB_LEN; 3559 host->max_id = QEDF_MAX_SESSIONS; 3560 host->can_queue = FCOE_PARAMS_NUM_TASKS; 3561 rc = scsi_add_host(host, &pdev->dev); 3562 if (rc) { 3563 QEDF_WARN(&qedf->dbg_ctx, 3564 "Error adding Scsi_Host rc=0x%x.\n", rc); 3565 goto err6; 3566 } 3567 } 3568 3569 memset(¶ms, 0, sizeof(params)); 3570 params.mtu = QEDF_LL2_BUF_SIZE; 3571 ether_addr_copy(params.ll2_mac_address, qedf->mac); 3572 3573 /* Start LL2 processing thread */ 3574 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no); 3575 qedf->ll2_recv_wq = 3576 create_workqueue(host_buf); 3577 if (!qedf->ll2_recv_wq) { 3578 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n"); 3579 rc = -ENOMEM; 3580 goto err7; 3581 } 3582 3583 #ifdef CONFIG_DEBUG_FS 3584 qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops, 3585 qedf_dbg_fops); 3586 #endif 3587 3588 /* Start LL2 */ 3589 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf); 3590 rc = qed_ops->ll2->start(qedf->cdev, ¶ms); 3591 if (rc) { 3592 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n"); 3593 goto err7; 3594 } 3595 set_bit(QEDF_LL2_STARTED, &qedf->flags); 3596 3597 /* Set initial FIP/FCoE VLAN to NULL */ 3598 qedf->vlan_id = 0; 3599 3600 /* 3601 * No need to setup fcoe_ctlr or fc_lport objects during recovery since 3602 * they were not reaped during the unload process. 3603 */ 3604 if (mode != QEDF_MODE_RECOVERY) { 3605 /* Setup imbedded fcoe controller */ 3606 qedf_fcoe_ctlr_setup(qedf); 3607 3608 /* Setup lport */ 3609 rc = qedf_lport_setup(qedf); 3610 if (rc) { 3611 QEDF_ERR(&(qedf->dbg_ctx), 3612 "qedf_lport_setup failed.\n"); 3613 goto err7; 3614 } 3615 } 3616 3617 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no); 3618 qedf->timer_work_queue = 3619 create_workqueue(host_buf); 3620 if (!qedf->timer_work_queue) { 3621 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer " 3622 "workqueue.\n"); 3623 rc = -ENOMEM; 3624 goto err7; 3625 } 3626 3627 /* DPC workqueue is not reaped during recovery unload */ 3628 if (mode != QEDF_MODE_RECOVERY) { 3629 sprintf(host_buf, "qedf_%u_dpc", 3630 qedf->lport->host->host_no); 3631 qedf->dpc_wq = create_workqueue(host_buf); 3632 } 3633 INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler); 3634 3635 /* 3636 * GRC dump and sysfs parameters are not reaped during the recovery 3637 * unload process. 3638 */ 3639 if (mode != QEDF_MODE_RECOVERY) { 3640 qedf->grcdump_size = 3641 qed_ops->common->dbg_all_data_size(qedf->cdev); 3642 if (qedf->grcdump_size) { 3643 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump, 3644 qedf->grcdump_size); 3645 if (rc) { 3646 QEDF_ERR(&(qedf->dbg_ctx), 3647 "GRC Dump buffer alloc failed.\n"); 3648 qedf->grcdump = NULL; 3649 } 3650 3651 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3652 "grcdump: addr=%p, size=%u.\n", 3653 qedf->grcdump, qedf->grcdump_size); 3654 } 3655 qedf_create_sysfs_ctx_attr(qedf); 3656 3657 /* Initialize I/O tracing for this adapter */ 3658 spin_lock_init(&qedf->io_trace_lock); 3659 qedf->io_trace_idx = 0; 3660 } 3661 3662 init_completion(&qedf->flogi_compl); 3663 3664 status = qed_ops->common->update_drv_state(qedf->cdev, true); 3665 if (status) 3666 QEDF_ERR(&(qedf->dbg_ctx), 3667 "Failed to send drv state to MFW.\n"); 3668 3669 memset(&link_params, 0, sizeof(struct qed_link_params)); 3670 link_params.link_up = true; 3671 status = qed_ops->common->set_link(qedf->cdev, &link_params); 3672 if (status) 3673 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n"); 3674 3675 /* Start/restart discovery */ 3676 if (mode == QEDF_MODE_RECOVERY) 3677 fcoe_ctlr_link_up(&qedf->ctlr); 3678 else 3679 fc_fabric_login(lport); 3680 3681 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n"); 3682 3683 clear_bit(QEDF_PROBING, &qedf->flags); 3684 3685 /* All good */ 3686 return 0; 3687 3688 err7: 3689 if (qedf->ll2_recv_wq) 3690 destroy_workqueue(qedf->ll2_recv_wq); 3691 fc_remove_host(qedf->lport->host); 3692 scsi_remove_host(qedf->lport->host); 3693 #ifdef CONFIG_DEBUG_FS 3694 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3695 #endif 3696 err6: 3697 qedf_cmd_mgr_free(qedf->cmd_mgr); 3698 err5: 3699 qed_ops->stop(qedf->cdev); 3700 err4: 3701 qedf_free_fcoe_pf_param(qedf); 3702 qedf_sync_free_irqs(qedf); 3703 err3: 3704 qed_ops->common->slowpath_stop(qedf->cdev); 3705 err2: 3706 qed_ops->common->remove(qedf->cdev); 3707 err1: 3708 scsi_host_put(lport->host); 3709 err0: 3710 return rc; 3711 } 3712 3713 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id) 3714 { 3715 return __qedf_probe(pdev, QEDF_MODE_NORMAL); 3716 } 3717 3718 static void __qedf_remove(struct pci_dev *pdev, int mode) 3719 { 3720 struct qedf_ctx *qedf; 3721 int rc; 3722 3723 if (!pdev) { 3724 QEDF_ERR(NULL, "pdev is NULL.\n"); 3725 return; 3726 } 3727 3728 qedf = pci_get_drvdata(pdev); 3729 3730 /* 3731 * Prevent race where we're in board disable work and then try to 3732 * rmmod the module. 3733 */ 3734 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 3735 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n"); 3736 return; 3737 } 3738 3739 if (mode != QEDF_MODE_RECOVERY) 3740 set_bit(QEDF_UNLOADING, &qedf->flags); 3741 3742 /* Logoff the fabric to upload all connections */ 3743 if (mode == QEDF_MODE_RECOVERY) 3744 fcoe_ctlr_link_down(&qedf->ctlr); 3745 else 3746 fc_fabric_logoff(qedf->lport); 3747 3748 if (!qedf_wait_for_upload(qedf)) 3749 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 3750 3751 #ifdef CONFIG_DEBUG_FS 3752 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3753 #endif 3754 3755 /* Stop any link update handling */ 3756 cancel_delayed_work_sync(&qedf->link_update); 3757 destroy_workqueue(qedf->link_update_wq); 3758 qedf->link_update_wq = NULL; 3759 3760 if (qedf->timer_work_queue) 3761 destroy_workqueue(qedf->timer_work_queue); 3762 3763 /* Stop Light L2 */ 3764 clear_bit(QEDF_LL2_STARTED, &qedf->flags); 3765 qed_ops->ll2->stop(qedf->cdev); 3766 if (qedf->ll2_recv_wq) 3767 destroy_workqueue(qedf->ll2_recv_wq); 3768 3769 /* Stop fastpath */ 3770 qedf_sync_free_irqs(qedf); 3771 qedf_destroy_sb(qedf); 3772 3773 /* 3774 * During recovery don't destroy OS constructs that represent the 3775 * physical port. 3776 */ 3777 if (mode != QEDF_MODE_RECOVERY) { 3778 qedf_free_grc_dump_buf(&qedf->grcdump); 3779 qedf_remove_sysfs_ctx_attr(qedf); 3780 3781 /* Remove all SCSI/libfc/libfcoe structures */ 3782 fcoe_ctlr_destroy(&qedf->ctlr); 3783 fc_lport_destroy(qedf->lport); 3784 fc_remove_host(qedf->lport->host); 3785 scsi_remove_host(qedf->lport->host); 3786 } 3787 3788 qedf_cmd_mgr_free(qedf->cmd_mgr); 3789 3790 if (mode != QEDF_MODE_RECOVERY) { 3791 fc_exch_mgr_free(qedf->lport); 3792 fc_lport_free_stats(qedf->lport); 3793 3794 /* Wait for all vports to be reaped */ 3795 qedf_wait_for_vport_destroy(qedf); 3796 } 3797 3798 /* 3799 * Now that all connections have been uploaded we can stop the 3800 * rest of the qed operations 3801 */ 3802 qed_ops->stop(qedf->cdev); 3803 3804 if (mode != QEDF_MODE_RECOVERY) { 3805 if (qedf->dpc_wq) { 3806 /* Stop general DPC handling */ 3807 destroy_workqueue(qedf->dpc_wq); 3808 qedf->dpc_wq = NULL; 3809 } 3810 } 3811 3812 /* Final shutdown for the board */ 3813 qedf_free_fcoe_pf_param(qedf); 3814 if (mode != QEDF_MODE_RECOVERY) { 3815 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3816 pci_set_drvdata(pdev, NULL); 3817 } 3818 3819 rc = qed_ops->common->update_drv_state(qedf->cdev, false); 3820 if (rc) 3821 QEDF_ERR(&(qedf->dbg_ctx), 3822 "Failed to send drv state to MFW.\n"); 3823 3824 if (mode != QEDF_MODE_RECOVERY && qedf->devlink) { 3825 qed_ops->common->devlink_unregister(qedf->devlink); 3826 qedf->devlink = NULL; 3827 } 3828 3829 qed_ops->common->slowpath_stop(qedf->cdev); 3830 qed_ops->common->remove(qedf->cdev); 3831 3832 mempool_destroy(qedf->io_mempool); 3833 3834 /* Only reap the Scsi_host on a real removal */ 3835 if (mode != QEDF_MODE_RECOVERY) 3836 scsi_host_put(qedf->lport->host); 3837 } 3838 3839 static void qedf_remove(struct pci_dev *pdev) 3840 { 3841 /* Check to make sure this function wasn't already disabled */ 3842 if (!atomic_read(&pdev->enable_cnt)) 3843 return; 3844 3845 __qedf_remove(pdev, QEDF_MODE_NORMAL); 3846 } 3847 3848 void qedf_wq_grcdump(struct work_struct *work) 3849 { 3850 struct qedf_ctx *qedf = 3851 container_of(work, struct qedf_ctx, grcdump_work.work); 3852 3853 QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n"); 3854 qedf_capture_grc_dump(qedf); 3855 } 3856 3857 void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type) 3858 { 3859 struct qedf_ctx *qedf = dev; 3860 3861 QEDF_ERR(&(qedf->dbg_ctx), 3862 "Hardware error handler scheduled, event=%d.\n", 3863 err_type); 3864 3865 if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) { 3866 QEDF_ERR(&(qedf->dbg_ctx), 3867 "Already in recovery, not scheduling board disable work.\n"); 3868 return; 3869 } 3870 3871 switch (err_type) { 3872 case QED_HW_ERR_FAN_FAIL: 3873 schedule_delayed_work(&qedf->board_disable_work, 0); 3874 break; 3875 case QED_HW_ERR_MFW_RESP_FAIL: 3876 case QED_HW_ERR_HW_ATTN: 3877 case QED_HW_ERR_DMAE_FAIL: 3878 case QED_HW_ERR_FW_ASSERT: 3879 /* Prevent HW attentions from being reasserted */ 3880 qed_ops->common->attn_clr_enable(qedf->cdev, true); 3881 break; 3882 case QED_HW_ERR_RAMROD_FAIL: 3883 /* Prevent HW attentions from being reasserted */ 3884 qed_ops->common->attn_clr_enable(qedf->cdev, true); 3885 3886 if (qedf_enable_recovery && qedf->devlink) 3887 qed_ops->common->report_fatal_error(qedf->devlink, 3888 err_type); 3889 3890 break; 3891 default: 3892 break; 3893 } 3894 } 3895 3896 /* 3897 * Protocol TLV handler 3898 */ 3899 void qedf_get_protocol_tlv_data(void *dev, void *data) 3900 { 3901 struct qedf_ctx *qedf = dev; 3902 struct qed_mfw_tlv_fcoe *fcoe = data; 3903 struct fc_lport *lport; 3904 struct Scsi_Host *host; 3905 struct fc_host_attrs *fc_host; 3906 struct fc_host_statistics *hst; 3907 3908 if (!qedf) { 3909 QEDF_ERR(NULL, "qedf is null.\n"); 3910 return; 3911 } 3912 3913 if (test_bit(QEDF_PROBING, &qedf->flags)) { 3914 QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n"); 3915 return; 3916 } 3917 3918 lport = qedf->lport; 3919 host = lport->host; 3920 fc_host = shost_to_fc_host(host); 3921 3922 /* Force a refresh of the fc_host stats including offload stats */ 3923 hst = qedf_fc_get_host_stats(host); 3924 3925 fcoe->qos_pri_set = true; 3926 fcoe->qos_pri = 3; /* Hard coded to 3 in driver */ 3927 3928 fcoe->ra_tov_set = true; 3929 fcoe->ra_tov = lport->r_a_tov; 3930 3931 fcoe->ed_tov_set = true; 3932 fcoe->ed_tov = lport->e_d_tov; 3933 3934 fcoe->npiv_state_set = true; 3935 fcoe->npiv_state = 1; /* NPIV always enabled */ 3936 3937 fcoe->num_npiv_ids_set = true; 3938 fcoe->num_npiv_ids = fc_host->npiv_vports_inuse; 3939 3940 /* Certain attributes we only want to set if we've selected an FCF */ 3941 if (qedf->ctlr.sel_fcf) { 3942 fcoe->switch_name_set = true; 3943 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name); 3944 } 3945 3946 fcoe->port_state_set = true; 3947 /* For qedf we're either link down or fabric attach */ 3948 if (lport->link_up) 3949 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC; 3950 else 3951 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE; 3952 3953 fcoe->link_failures_set = true; 3954 fcoe->link_failures = (u16)hst->link_failure_count; 3955 3956 fcoe->fcoe_txq_depth_set = true; 3957 fcoe->fcoe_rxq_depth_set = true; 3958 fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS; 3959 fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS; 3960 3961 fcoe->fcoe_rx_frames_set = true; 3962 fcoe->fcoe_rx_frames = hst->rx_frames; 3963 3964 fcoe->fcoe_tx_frames_set = true; 3965 fcoe->fcoe_tx_frames = hst->tx_frames; 3966 3967 fcoe->fcoe_rx_bytes_set = true; 3968 fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000; 3969 3970 fcoe->fcoe_tx_bytes_set = true; 3971 fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000; 3972 3973 fcoe->crc_count_set = true; 3974 fcoe->crc_count = hst->invalid_crc_count; 3975 3976 fcoe->tx_abts_set = true; 3977 fcoe->tx_abts = hst->fcp_packet_aborts; 3978 3979 fcoe->tx_lun_rst_set = true; 3980 fcoe->tx_lun_rst = qedf->lun_resets; 3981 3982 fcoe->abort_task_sets_set = true; 3983 fcoe->abort_task_sets = qedf->packet_aborts; 3984 3985 fcoe->scsi_busy_set = true; 3986 fcoe->scsi_busy = qedf->busy; 3987 3988 fcoe->scsi_tsk_full_set = true; 3989 fcoe->scsi_tsk_full = qedf->task_set_fulls; 3990 } 3991 3992 /* Deferred work function to perform soft context reset on STAG change */ 3993 void qedf_stag_change_work(struct work_struct *work) 3994 { 3995 struct qedf_ctx *qedf = 3996 container_of(work, struct qedf_ctx, stag_work.work); 3997 3998 printk_ratelimited("[%s]:[%s:%d]:%d: Performing software context reset.", 3999 dev_name(&qedf->pdev->dev), __func__, __LINE__, 4000 qedf->dbg_ctx.host_no); 4001 qedf_ctx_soft_reset(qedf->lport); 4002 } 4003 4004 static void qedf_shutdown(struct pci_dev *pdev) 4005 { 4006 __qedf_remove(pdev, QEDF_MODE_NORMAL); 4007 } 4008 4009 /* 4010 * Recovery handler code 4011 */ 4012 static void qedf_schedule_recovery_handler(void *dev) 4013 { 4014 struct qedf_ctx *qedf = dev; 4015 4016 QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n"); 4017 schedule_delayed_work(&qedf->recovery_work, 0); 4018 } 4019 4020 static void qedf_recovery_handler(struct work_struct *work) 4021 { 4022 struct qedf_ctx *qedf = 4023 container_of(work, struct qedf_ctx, recovery_work.work); 4024 4025 if (test_and_set_bit(QEDF_IN_RECOVERY, &qedf->flags)) 4026 return; 4027 4028 /* 4029 * Call common_ops->recovery_prolog to allow the MFW to quiesce 4030 * any PCI transactions. 4031 */ 4032 qed_ops->common->recovery_prolog(qedf->cdev); 4033 4034 QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n"); 4035 __qedf_remove(qedf->pdev, QEDF_MODE_RECOVERY); 4036 /* 4037 * Reset link and dcbx to down state since we will not get a link down 4038 * event from the MFW but calling __qedf_remove will essentially be a 4039 * link down event. 4040 */ 4041 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 4042 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 4043 __qedf_probe(qedf->pdev, QEDF_MODE_RECOVERY); 4044 clear_bit(QEDF_IN_RECOVERY, &qedf->flags); 4045 QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n"); 4046 } 4047 4048 /* Generic TLV data callback */ 4049 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 4050 { 4051 struct qedf_ctx *qedf; 4052 4053 if (!dev) { 4054 QEDF_INFO(NULL, QEDF_LOG_EVT, 4055 "dev is NULL so ignoring get_generic_tlv_data request.\n"); 4056 return; 4057 } 4058 qedf = (struct qedf_ctx *)dev; 4059 4060 memset(data, 0, sizeof(struct qed_generic_tlvs)); 4061 ether_addr_copy(data->mac[0], qedf->mac); 4062 } 4063 4064 /* 4065 * Module Init/Remove 4066 */ 4067 4068 static int __init qedf_init(void) 4069 { 4070 int ret; 4071 4072 /* If debug=1 passed, set the default log mask */ 4073 if (qedf_debug == QEDF_LOG_DEFAULT) 4074 qedf_debug = QEDF_DEFAULT_LOG_MASK; 4075 4076 /* 4077 * Check that default prio for FIP/FCoE traffic is between 0..7 if a 4078 * value has been set 4079 */ 4080 if (qedf_default_prio > -1) 4081 if (qedf_default_prio > 7) { 4082 qedf_default_prio = QEDF_DEFAULT_PRIO; 4083 QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n", 4084 QEDF_DEFAULT_PRIO); 4085 } 4086 4087 /* Print driver banner */ 4088 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR, 4089 QEDF_VERSION); 4090 4091 /* Create kmem_cache for qedf_io_work structs */ 4092 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache", 4093 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL); 4094 if (qedf_io_work_cache == NULL) { 4095 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n"); 4096 goto err1; 4097 } 4098 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n", 4099 qedf_io_work_cache); 4100 4101 qed_ops = qed_get_fcoe_ops(); 4102 if (!qed_ops) { 4103 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n"); 4104 goto err1; 4105 } 4106 4107 #ifdef CONFIG_DEBUG_FS 4108 qedf_dbg_init("qedf"); 4109 #endif 4110 4111 qedf_fc_transport_template = 4112 fc_attach_transport(&qedf_fc_transport_fn); 4113 if (!qedf_fc_transport_template) { 4114 QEDF_ERR(NULL, "Could not register with FC transport\n"); 4115 goto err2; 4116 } 4117 4118 qedf_fc_vport_transport_template = 4119 fc_attach_transport(&qedf_fc_vport_transport_fn); 4120 if (!qedf_fc_vport_transport_template) { 4121 QEDF_ERR(NULL, "Could not register vport template with FC " 4122 "transport\n"); 4123 goto err3; 4124 } 4125 4126 qedf_io_wq = create_workqueue("qedf_io_wq"); 4127 if (!qedf_io_wq) { 4128 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n"); 4129 goto err4; 4130 } 4131 4132 qedf_cb_ops.get_login_failures = qedf_get_login_failures; 4133 4134 ret = pci_register_driver(&qedf_pci_driver); 4135 if (ret) { 4136 QEDF_ERR(NULL, "Failed to register driver\n"); 4137 goto err5; 4138 } 4139 4140 return 0; 4141 4142 err5: 4143 destroy_workqueue(qedf_io_wq); 4144 err4: 4145 fc_release_transport(qedf_fc_vport_transport_template); 4146 err3: 4147 fc_release_transport(qedf_fc_transport_template); 4148 err2: 4149 #ifdef CONFIG_DEBUG_FS 4150 qedf_dbg_exit(); 4151 #endif 4152 qed_put_fcoe_ops(); 4153 err1: 4154 return -EINVAL; 4155 } 4156 4157 static void __exit qedf_cleanup(void) 4158 { 4159 pci_unregister_driver(&qedf_pci_driver); 4160 4161 destroy_workqueue(qedf_io_wq); 4162 4163 fc_release_transport(qedf_fc_vport_transport_template); 4164 fc_release_transport(qedf_fc_transport_template); 4165 #ifdef CONFIG_DEBUG_FS 4166 qedf_dbg_exit(); 4167 #endif 4168 qed_put_fcoe_ops(); 4169 4170 kmem_cache_destroy(qedf_io_work_cache); 4171 } 4172 4173 MODULE_LICENSE("GPL"); 4174 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module"); 4175 MODULE_AUTHOR("QLogic Corporation"); 4176 MODULE_VERSION(QEDF_VERSION); 4177 module_init(qedf_init); 4178 module_exit(qedf_cleanup); 4179