1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * QLogic FCoE Offload Driver 4 * Copyright (c) 2016-2018 Cavium Inc. 5 */ 6 #include <linux/init.h> 7 #include <linux/kernel.h> 8 #include <linux/module.h> 9 #include <linux/pci.h> 10 #include <linux/device.h> 11 #include <linux/highmem.h> 12 #include <linux/crc32.h> 13 #include <linux/interrupt.h> 14 #include <linux/list.h> 15 #include <linux/kthread.h> 16 #include <linux/phylink.h> 17 #include <scsi/libfc.h> 18 #include <scsi/scsi_host.h> 19 #include <scsi/fc_frame.h> 20 #include <linux/if_ether.h> 21 #include <linux/if_vlan.h> 22 #include <linux/cpu.h> 23 #include "qedf.h" 24 #include "qedf_dbg.h" 25 #include <uapi/linux/pci_regs.h> 26 27 const struct qed_fcoe_ops *qed_ops; 28 29 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id); 30 static void qedf_remove(struct pci_dev *pdev); 31 static void qedf_shutdown(struct pci_dev *pdev); 32 static void qedf_schedule_recovery_handler(void *dev); 33 static void qedf_recovery_handler(struct work_struct *work); 34 static int qedf_suspend(struct pci_dev *pdev, pm_message_t state); 35 36 /* 37 * Driver module parameters. 38 */ 39 static unsigned int qedf_dev_loss_tmo = 60; 40 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO); 41 MODULE_PARM_DESC(dev_loss_tmo, " dev_loss_tmo setting for attached " 42 "remote ports (default 60)"); 43 44 uint qedf_debug = QEDF_LOG_INFO; 45 module_param_named(debug, qedf_debug, uint, S_IRUGO|S_IWUSR); 46 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging" 47 " mask"); 48 49 static uint qedf_fipvlan_retries = 60; 50 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO); 51 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt " 52 "before giving up (default 60)"); 53 54 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN; 55 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO); 56 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails " 57 "(default 1002)."); 58 59 static int qedf_default_prio = -1; 60 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO); 61 MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE" 62 " traffic (value between 0 and 7, default 3)."); 63 64 uint qedf_dump_frames; 65 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR); 66 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames " 67 "(default off)"); 68 69 static uint qedf_queue_depth; 70 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO); 71 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered " 72 "by the qedf driver. Default is 0 (use OS default)."); 73 74 uint qedf_io_tracing; 75 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR); 76 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions " 77 "into trace buffer. (default off)."); 78 79 static uint qedf_max_lun = MAX_FIBRE_LUNS; 80 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO); 81 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver " 82 "supports. (default 0xffffffff)"); 83 84 uint qedf_link_down_tmo; 85 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO); 86 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the " 87 "link is down by N seconds."); 88 89 bool qedf_retry_delay; 90 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR); 91 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry " 92 "delay handling (default off)."); 93 94 static bool qedf_dcbx_no_wait; 95 module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR); 96 MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start " 97 "sending FIP VLAN requests on link up (Default: off)."); 98 99 static uint qedf_dp_module; 100 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO); 101 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed " 102 "qed module during probe."); 103 104 static uint qedf_dp_level = QED_LEVEL_NOTICE; 105 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO); 106 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module " 107 "during probe (0-3: 0 more verbose)."); 108 109 static bool qedf_enable_recovery = true; 110 module_param_named(enable_recovery, qedf_enable_recovery, 111 bool, S_IRUGO | S_IWUSR); 112 MODULE_PARM_DESC(enable_recovery, "Enable/disable recovery on driver/firmware " 113 "interface level errors 0 = Disabled, 1 = Enabled (Default: 1)."); 114 115 struct workqueue_struct *qedf_io_wq; 116 117 static struct fcoe_percpu_s qedf_global; 118 static DEFINE_SPINLOCK(qedf_global_lock); 119 120 static struct kmem_cache *qedf_io_work_cache; 121 122 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id) 123 { 124 int vlan_id_tmp = 0; 125 126 vlan_id_tmp = vlan_id | (qedf->prio << VLAN_PRIO_SHIFT); 127 qedf->vlan_id = vlan_id_tmp; 128 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 129 "Setting vlan_id=0x%04x prio=%d.\n", 130 vlan_id_tmp, qedf->prio); 131 } 132 133 /* Returns true if we have a valid vlan, false otherwise */ 134 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf) 135 { 136 137 while (qedf->fipvlan_retries--) { 138 /* This is to catch if link goes down during fipvlan retries */ 139 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 140 QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n"); 141 return false; 142 } 143 144 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 145 QEDF_ERR(&qedf->dbg_ctx, "Driver unloading.\n"); 146 return false; 147 } 148 149 if (qedf->vlan_id > 0) { 150 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 151 "vlan = 0x%x already set, calling ctlr_link_up.\n", 152 qedf->vlan_id); 153 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) 154 fcoe_ctlr_link_up(&qedf->ctlr); 155 return true; 156 } 157 158 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 159 "Retry %d.\n", qedf->fipvlan_retries); 160 init_completion(&qedf->fipvlan_compl); 161 qedf_fcoe_send_vlan_req(qedf); 162 wait_for_completion_timeout(&qedf->fipvlan_compl, 1 * HZ); 163 } 164 165 return false; 166 } 167 168 static void qedf_handle_link_update(struct work_struct *work) 169 { 170 struct qedf_ctx *qedf = 171 container_of(work, struct qedf_ctx, link_update.work); 172 int rc; 173 174 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n", 175 atomic_read(&qedf->link_state)); 176 177 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 178 rc = qedf_initiate_fipvlan_req(qedf); 179 if (rc) 180 return; 181 182 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 183 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 184 "Link is down, resetting vlan_id.\n"); 185 qedf->vlan_id = 0; 186 return; 187 } 188 189 /* 190 * If we get here then we never received a repsonse to our 191 * fip vlan request so set the vlan_id to the default and 192 * tell FCoE that the link is up 193 */ 194 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN " 195 "response, falling back to default VLAN %d.\n", 196 qedf_fallback_vlan); 197 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 198 199 /* 200 * Zero out data_src_addr so we'll update it with the new 201 * lport port_id 202 */ 203 eth_zero_addr(qedf->data_src_addr); 204 fcoe_ctlr_link_up(&qedf->ctlr); 205 } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 206 /* 207 * If we hit here and link_down_tmo_valid is still 1 it means 208 * that link_down_tmo timed out so set it to 0 to make sure any 209 * other readers have accurate state. 210 */ 211 atomic_set(&qedf->link_down_tmo_valid, 0); 212 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 213 "Calling fcoe_ctlr_link_down().\n"); 214 fcoe_ctlr_link_down(&qedf->ctlr); 215 if (qedf_wait_for_upload(qedf) == false) 216 QEDF_ERR(&qedf->dbg_ctx, 217 "Could not upload all sessions.\n"); 218 /* Reset the number of FIP VLAN retries */ 219 qedf->fipvlan_retries = qedf_fipvlan_retries; 220 } 221 } 222 223 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1 224 #define QEDF_FCOE_MAC_METHOD_FCF_MAP 2 225 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3 226 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp) 227 { 228 u8 *granted_mac; 229 struct fc_frame_header *fh = fc_frame_header_get(fp); 230 u8 fc_map[3]; 231 int method = 0; 232 233 /* Get granted MAC address from FIP FLOGI payload */ 234 granted_mac = fr_cb(fp)->granted_mac; 235 236 /* 237 * We set the source MAC for FCoE traffic based on the Granted MAC 238 * address from the switch. 239 * 240 * If granted_mac is non-zero, we used that. 241 * If the granted_mac is zeroed out, created the FCoE MAC based on 242 * the sel_fcf->fc_map and the d_id fo the FLOGI frame. 243 * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the 244 * d_id of the FLOGI frame. 245 */ 246 if (!is_zero_ether_addr(granted_mac)) { 247 ether_addr_copy(qedf->data_src_addr, granted_mac); 248 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC; 249 } else if (qedf->ctlr.sel_fcf->fc_map != 0) { 250 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map); 251 qedf->data_src_addr[0] = fc_map[0]; 252 qedf->data_src_addr[1] = fc_map[1]; 253 qedf->data_src_addr[2] = fc_map[2]; 254 qedf->data_src_addr[3] = fh->fh_d_id[0]; 255 qedf->data_src_addr[4] = fh->fh_d_id[1]; 256 qedf->data_src_addr[5] = fh->fh_d_id[2]; 257 method = QEDF_FCOE_MAC_METHOD_FCF_MAP; 258 } else { 259 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id); 260 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC; 261 } 262 263 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 264 "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method); 265 } 266 267 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp, 268 void *arg) 269 { 270 struct fc_exch *exch = fc_seq_exch(seq); 271 struct fc_lport *lport = exch->lp; 272 struct qedf_ctx *qedf = lport_priv(lport); 273 274 if (!qedf) { 275 QEDF_ERR(NULL, "qedf is NULL.\n"); 276 return; 277 } 278 279 /* 280 * If ERR_PTR is set then don't try to stat anything as it will cause 281 * a crash when we access fp. 282 */ 283 if (IS_ERR(fp)) { 284 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 285 "fp has IS_ERR() set.\n"); 286 goto skip_stat; 287 } 288 289 /* Log stats for FLOGI reject */ 290 if (fc_frame_payload_op(fp) == ELS_LS_RJT) 291 qedf->flogi_failed++; 292 else if (fc_frame_payload_op(fp) == ELS_LS_ACC) { 293 /* Set the source MAC we will use for FCoE traffic */ 294 qedf_set_data_src_addr(qedf, fp); 295 qedf->flogi_pending = 0; 296 } 297 298 /* Complete flogi_compl so we can proceed to sending ADISCs */ 299 complete(&qedf->flogi_compl); 300 301 skip_stat: 302 /* Report response to libfc */ 303 fc_lport_flogi_resp(seq, fp, lport); 304 } 305 306 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did, 307 struct fc_frame *fp, unsigned int op, 308 void (*resp)(struct fc_seq *, 309 struct fc_frame *, 310 void *), 311 void *arg, u32 timeout) 312 { 313 struct qedf_ctx *qedf = lport_priv(lport); 314 315 /* 316 * Intercept FLOGI for statistic purposes. Note we use the resp 317 * callback to tell if this is really a flogi. 318 */ 319 if (resp == fc_lport_flogi_resp) { 320 qedf->flogi_cnt++; 321 if (qedf->flogi_pending >= QEDF_FLOGI_RETRY_CNT) { 322 schedule_delayed_work(&qedf->stag_work, 2); 323 return NULL; 324 } 325 qedf->flogi_pending++; 326 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp, 327 arg, timeout); 328 } 329 330 return fc_elsct_send(lport, did, fp, op, resp, arg, timeout); 331 } 332 333 int qedf_send_flogi(struct qedf_ctx *qedf) 334 { 335 struct fc_lport *lport; 336 struct fc_frame *fp; 337 338 lport = qedf->lport; 339 340 if (!lport->tt.elsct_send) { 341 QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n"); 342 return -EINVAL; 343 } 344 345 fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); 346 if (!fp) { 347 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n"); 348 return -ENOMEM; 349 } 350 351 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 352 "Sending FLOGI to reestablish session with switch.\n"); 353 lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, 354 ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov); 355 356 init_completion(&qedf->flogi_compl); 357 358 return 0; 359 } 360 361 /* 362 * This function is called if link_down_tmo is in use. If we get a link up and 363 * link_down_tmo has not expired then use just FLOGI/ADISC to recover our 364 * sessions with targets. Otherwise, just call fcoe_ctlr_link_up(). 365 */ 366 static void qedf_link_recovery(struct work_struct *work) 367 { 368 struct qedf_ctx *qedf = 369 container_of(work, struct qedf_ctx, link_recovery.work); 370 struct fc_lport *lport = qedf->lport; 371 struct fc_rport_priv *rdata; 372 bool rc; 373 int retries = 30; 374 int rval, i; 375 struct list_head rdata_login_list; 376 377 INIT_LIST_HEAD(&rdata_login_list); 378 379 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 380 "Link down tmo did not expire.\n"); 381 382 /* 383 * Essentially reset the fcoe_ctlr here without affecting the state 384 * of the libfc structs. 385 */ 386 qedf->ctlr.state = FIP_ST_LINK_WAIT; 387 fcoe_ctlr_link_down(&qedf->ctlr); 388 389 /* 390 * Bring the link up before we send the fipvlan request so libfcoe 391 * can select a new fcf in parallel 392 */ 393 fcoe_ctlr_link_up(&qedf->ctlr); 394 395 /* Since the link when down and up to verify which vlan we're on */ 396 qedf->fipvlan_retries = qedf_fipvlan_retries; 397 rc = qedf_initiate_fipvlan_req(qedf); 398 /* If getting the VLAN fails, set the VLAN to the fallback one */ 399 if (!rc) 400 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 401 402 /* 403 * We need to wait for an FCF to be selected due to the 404 * fcoe_ctlr_link_up other the FLOGI will be rejected. 405 */ 406 while (retries > 0) { 407 if (qedf->ctlr.sel_fcf) { 408 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 409 "FCF reselected, proceeding with FLOGI.\n"); 410 break; 411 } 412 msleep(500); 413 retries--; 414 } 415 416 if (retries < 1) { 417 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for " 418 "FCF selection.\n"); 419 return; 420 } 421 422 rval = qedf_send_flogi(qedf); 423 if (rval) 424 return; 425 426 /* Wait for FLOGI completion before proceeding with sending ADISCs */ 427 i = wait_for_completion_timeout(&qedf->flogi_compl, 428 qedf->lport->r_a_tov); 429 if (i == 0) { 430 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n"); 431 return; 432 } 433 434 /* 435 * Call lport->tt.rport_login which will cause libfc to send an 436 * ADISC since the rport is in state ready. 437 */ 438 mutex_lock(&lport->disc.disc_mutex); 439 list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) { 440 if (kref_get_unless_zero(&rdata->kref)) { 441 fc_rport_login(rdata); 442 kref_put(&rdata->kref, fc_rport_destroy); 443 } 444 } 445 mutex_unlock(&lport->disc.disc_mutex); 446 } 447 448 static void qedf_update_link_speed(struct qedf_ctx *qedf, 449 struct qed_link_output *link) 450 { 451 __ETHTOOL_DECLARE_LINK_MODE_MASK(sup_caps); 452 struct fc_lport *lport = qedf->lport; 453 454 lport->link_speed = FC_PORTSPEED_UNKNOWN; 455 lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN; 456 457 /* Set fc_host link speed */ 458 switch (link->speed) { 459 case 10000: 460 lport->link_speed = FC_PORTSPEED_10GBIT; 461 break; 462 case 25000: 463 lport->link_speed = FC_PORTSPEED_25GBIT; 464 break; 465 case 40000: 466 lport->link_speed = FC_PORTSPEED_40GBIT; 467 break; 468 case 50000: 469 lport->link_speed = FC_PORTSPEED_50GBIT; 470 break; 471 case 100000: 472 lport->link_speed = FC_PORTSPEED_100GBIT; 473 break; 474 case 20000: 475 lport->link_speed = FC_PORTSPEED_20GBIT; 476 break; 477 default: 478 lport->link_speed = FC_PORTSPEED_UNKNOWN; 479 break; 480 } 481 482 /* 483 * Set supported link speed by querying the supported 484 * capabilities of the link. 485 */ 486 487 phylink_zero(sup_caps); 488 phylink_set(sup_caps, 10000baseT_Full); 489 phylink_set(sup_caps, 10000baseKX4_Full); 490 phylink_set(sup_caps, 10000baseR_FEC); 491 phylink_set(sup_caps, 10000baseCR_Full); 492 phylink_set(sup_caps, 10000baseSR_Full); 493 phylink_set(sup_caps, 10000baseLR_Full); 494 phylink_set(sup_caps, 10000baseLRM_Full); 495 phylink_set(sup_caps, 10000baseKR_Full); 496 497 if (linkmode_intersects(link->supported_caps, sup_caps)) 498 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT; 499 500 phylink_zero(sup_caps); 501 phylink_set(sup_caps, 25000baseKR_Full); 502 phylink_set(sup_caps, 25000baseCR_Full); 503 phylink_set(sup_caps, 25000baseSR_Full); 504 505 if (linkmode_intersects(link->supported_caps, sup_caps)) 506 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT; 507 508 phylink_zero(sup_caps); 509 phylink_set(sup_caps, 40000baseLR4_Full); 510 phylink_set(sup_caps, 40000baseKR4_Full); 511 phylink_set(sup_caps, 40000baseCR4_Full); 512 phylink_set(sup_caps, 40000baseSR4_Full); 513 514 if (linkmode_intersects(link->supported_caps, sup_caps)) 515 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT; 516 517 phylink_zero(sup_caps); 518 phylink_set(sup_caps, 50000baseKR2_Full); 519 phylink_set(sup_caps, 50000baseCR2_Full); 520 phylink_set(sup_caps, 50000baseSR2_Full); 521 522 if (linkmode_intersects(link->supported_caps, sup_caps)) 523 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT; 524 525 phylink_zero(sup_caps); 526 phylink_set(sup_caps, 100000baseKR4_Full); 527 phylink_set(sup_caps, 100000baseSR4_Full); 528 phylink_set(sup_caps, 100000baseCR4_Full); 529 phylink_set(sup_caps, 100000baseLR4_ER4_Full); 530 531 if (linkmode_intersects(link->supported_caps, sup_caps)) 532 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT; 533 534 phylink_zero(sup_caps); 535 phylink_set(sup_caps, 20000baseKR2_Full); 536 537 if (linkmode_intersects(link->supported_caps, sup_caps)) 538 lport->link_supported_speeds |= FC_PORTSPEED_20GBIT; 539 540 if (lport->host && lport->host->shost_data) 541 fc_host_supported_speeds(lport->host) = 542 lport->link_supported_speeds; 543 } 544 545 static void qedf_bw_update(void *dev) 546 { 547 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 548 struct qed_link_output link; 549 550 /* Get the latest status of the link */ 551 qed_ops->common->get_link(qedf->cdev, &link); 552 553 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 554 QEDF_ERR(&qedf->dbg_ctx, 555 "Ignore link update, driver getting unload.\n"); 556 return; 557 } 558 559 if (link.link_up) { 560 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) 561 qedf_update_link_speed(qedf, &link); 562 else 563 QEDF_ERR(&qedf->dbg_ctx, 564 "Ignore bw update, link is down.\n"); 565 566 } else { 567 QEDF_ERR(&qedf->dbg_ctx, "link_up is not set.\n"); 568 } 569 } 570 571 static void qedf_link_update(void *dev, struct qed_link_output *link) 572 { 573 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 574 575 /* 576 * Prevent race where we're removing the module and we get link update 577 * for qed. 578 */ 579 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 580 QEDF_ERR(&qedf->dbg_ctx, 581 "Ignore link update, driver getting unload.\n"); 582 return; 583 } 584 585 if (link->link_up) { 586 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 587 QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC, 588 "Ignoring link up event as link is already up.\n"); 589 return; 590 } 591 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n", 592 link->speed / 1000); 593 594 /* Cancel any pending link down work */ 595 cancel_delayed_work(&qedf->link_update); 596 597 atomic_set(&qedf->link_state, QEDF_LINK_UP); 598 qedf_update_link_speed(qedf, link); 599 600 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE || 601 qedf_dcbx_no_wait) { 602 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 603 "DCBx done.\n"); 604 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 605 queue_delayed_work(qedf->link_update_wq, 606 &qedf->link_recovery, 0); 607 else 608 queue_delayed_work(qedf->link_update_wq, 609 &qedf->link_update, 0); 610 atomic_set(&qedf->link_down_tmo_valid, 0); 611 } 612 613 } else { 614 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n"); 615 616 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 617 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 618 /* 619 * Flag that we're waiting for the link to come back up before 620 * informing the fcoe layer of the event. 621 */ 622 if (qedf_link_down_tmo > 0) { 623 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 624 "Starting link down tmo.\n"); 625 atomic_set(&qedf->link_down_tmo_valid, 1); 626 } 627 qedf->vlan_id = 0; 628 qedf_update_link_speed(qedf, link); 629 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 630 qedf_link_down_tmo * HZ); 631 } 632 } 633 634 635 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type) 636 { 637 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 638 u8 tmp_prio; 639 640 QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe " 641 "prio=%d.\n", get->operational.valid, get->operational.enabled, 642 get->operational.app_prio.fcoe); 643 644 if (get->operational.enabled && get->operational.valid) { 645 /* If DCBX was already negotiated on link up then just exit */ 646 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) { 647 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 648 "DCBX already set on link up.\n"); 649 return; 650 } 651 652 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE); 653 654 /* 655 * Set the 8021q priority in the following manner: 656 * 657 * 1. If a modparam is set use that 658 * 2. If the value is not between 0..7 use the default 659 * 3. Use the priority we get from the DCBX app tag 660 */ 661 tmp_prio = get->operational.app_prio.fcoe; 662 if (qedf_default_prio > -1) 663 qedf->prio = qedf_default_prio; 664 else if (tmp_prio > 7) { 665 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 666 "FIP/FCoE prio %d out of range, setting to %d.\n", 667 tmp_prio, QEDF_DEFAULT_PRIO); 668 qedf->prio = QEDF_DEFAULT_PRIO; 669 } else 670 qedf->prio = tmp_prio; 671 672 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP && 673 !qedf_dcbx_no_wait) { 674 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 675 queue_delayed_work(qedf->link_update_wq, 676 &qedf->link_recovery, 0); 677 else 678 queue_delayed_work(qedf->link_update_wq, 679 &qedf->link_update, 0); 680 atomic_set(&qedf->link_down_tmo_valid, 0); 681 } 682 } 683 684 } 685 686 static u32 qedf_get_login_failures(void *cookie) 687 { 688 struct qedf_ctx *qedf; 689 690 qedf = (struct qedf_ctx *)cookie; 691 return qedf->flogi_failed; 692 } 693 694 static struct qed_fcoe_cb_ops qedf_cb_ops = { 695 { 696 .link_update = qedf_link_update, 697 .bw_update = qedf_bw_update, 698 .schedule_recovery_handler = qedf_schedule_recovery_handler, 699 .dcbx_aen = qedf_dcbx_handler, 700 .get_generic_tlv_data = qedf_get_generic_tlv_data, 701 .get_protocol_tlv_data = qedf_get_protocol_tlv_data, 702 .schedule_hw_err_handler = qedf_schedule_hw_err_handler, 703 } 704 }; 705 706 /* 707 * Various transport templates. 708 */ 709 710 static struct scsi_transport_template *qedf_fc_transport_template; 711 static struct scsi_transport_template *qedf_fc_vport_transport_template; 712 713 /* 714 * SCSI EH handlers 715 */ 716 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd) 717 { 718 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); 719 struct fc_lport *lport; 720 struct qedf_ctx *qedf; 721 struct qedf_ioreq *io_req; 722 struct fc_rport_libfc_priv *rp = rport->dd_data; 723 struct fc_rport_priv *rdata; 724 struct qedf_rport *fcport = NULL; 725 int rc = FAILED; 726 int wait_count = 100; 727 int refcount = 0; 728 int rval; 729 int got_ref = 0; 730 731 lport = shost_priv(sc_cmd->device->host); 732 qedf = (struct qedf_ctx *)lport_priv(lport); 733 734 /* rport and tgt are allocated together, so tgt should be non-NULL */ 735 fcport = (struct qedf_rport *)&rp[1]; 736 rdata = fcport->rdata; 737 if (!rdata || !kref_get_unless_zero(&rdata->kref)) { 738 QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd); 739 rc = SUCCESS; 740 goto out; 741 } 742 743 744 io_req = qedf_priv(sc_cmd)->io_req; 745 if (!io_req) { 746 QEDF_ERR(&qedf->dbg_ctx, 747 "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n", 748 sc_cmd, sc_cmd->cmnd[0], 749 rdata->ids.port_id); 750 rc = SUCCESS; 751 goto drop_rdata_kref; 752 } 753 754 rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */ 755 if (rval) 756 got_ref = 1; 757 758 /* If we got a valid io_req, confirm it belongs to this sc_cmd. */ 759 if (!rval || io_req->sc_cmd != sc_cmd) { 760 QEDF_ERR(&qedf->dbg_ctx, 761 "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n", 762 io_req->sc_cmd, sc_cmd, rdata->ids.port_id); 763 764 goto drop_rdata_kref; 765 } 766 767 if (fc_remote_port_chkready(rport)) { 768 refcount = kref_read(&io_req->refcount); 769 QEDF_ERR(&qedf->dbg_ctx, 770 "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n", 771 io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0], 772 refcount, rdata->ids.port_id); 773 774 goto drop_rdata_kref; 775 } 776 777 rc = fc_block_rport(rport); 778 if (rc) 779 goto drop_rdata_kref; 780 781 if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) { 782 QEDF_ERR(&qedf->dbg_ctx, 783 "Connection uploading, xid=0x%x., port_id=%06x\n", 784 io_req->xid, rdata->ids.port_id); 785 while (io_req->sc_cmd && (wait_count != 0)) { 786 msleep(100); 787 wait_count--; 788 } 789 if (wait_count) { 790 QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n"); 791 rc = SUCCESS; 792 } else { 793 QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n"); 794 rc = FAILED; 795 } 796 goto drop_rdata_kref; 797 } 798 799 if (lport->state != LPORT_ST_READY || !(lport->link_up)) { 800 QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n"); 801 goto drop_rdata_kref; 802 } 803 804 QEDF_ERR(&qedf->dbg_ctx, 805 "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n", 806 io_req, sc_cmd, io_req->xid, io_req->fp_idx, 807 rdata->ids.port_id); 808 809 if (qedf->stop_io_on_error) { 810 qedf_stop_all_io(qedf); 811 rc = SUCCESS; 812 goto drop_rdata_kref; 813 } 814 815 init_completion(&io_req->abts_done); 816 rval = qedf_initiate_abts(io_req, true); 817 if (rval) { 818 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n"); 819 /* 820 * If we fail to queue the ABTS then return this command to 821 * the SCSI layer as it will own and free the xid 822 */ 823 rc = SUCCESS; 824 qedf_scsi_done(qedf, io_req, DID_ERROR); 825 goto drop_rdata_kref; 826 } 827 828 wait_for_completion(&io_req->abts_done); 829 830 if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS || 831 io_req->event == QEDF_IOREQ_EV_ABORT_FAILED || 832 io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) { 833 /* 834 * If we get a reponse to the abort this is success from 835 * the perspective that all references to the command have 836 * been removed from the driver and firmware 837 */ 838 rc = SUCCESS; 839 } else { 840 /* If the abort and cleanup failed then return a failure */ 841 rc = FAILED; 842 } 843 844 if (rc == SUCCESS) 845 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n", 846 io_req->xid); 847 else 848 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n", 849 io_req->xid); 850 851 drop_rdata_kref: 852 kref_put(&rdata->kref, fc_rport_destroy); 853 out: 854 if (got_ref) 855 kref_put(&io_req->refcount, qedf_release_cmd); 856 return rc; 857 } 858 859 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd) 860 { 861 struct scsi_target *starget = scsi_target(sc_cmd->device); 862 struct fc_rport *rport = starget_to_rport(starget); 863 864 QEDF_ERR(NULL, "TARGET RESET Issued..."); 865 return qedf_initiate_tmf(rport, 0, FCP_TMF_TGT_RESET); 866 } 867 868 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd) 869 { 870 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); 871 872 QEDF_ERR(NULL, "LUN RESET Issued...\n"); 873 return qedf_initiate_tmf(rport, sc_cmd->device->lun, FCP_TMF_LUN_RESET); 874 } 875 876 bool qedf_wait_for_upload(struct qedf_ctx *qedf) 877 { 878 struct qedf_rport *fcport; 879 int wait_cnt = 120; 880 881 while (wait_cnt--) { 882 if (atomic_read(&qedf->num_offloads)) 883 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 884 "Waiting for all uploads to complete num_offloads = 0x%x.\n", 885 atomic_read(&qedf->num_offloads)); 886 else 887 return true; 888 msleep(500); 889 } 890 891 rcu_read_lock(); 892 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 893 if (test_bit(QEDF_RPORT_SESSION_READY, 894 &fcport->flags)) { 895 if (fcport->rdata) 896 QEDF_ERR(&qedf->dbg_ctx, 897 "Waiting for fcport %p portid=%06x.\n", 898 fcport, fcport->rdata->ids.port_id); 899 } else { 900 QEDF_ERR(&qedf->dbg_ctx, 901 "Waiting for fcport %p.\n", fcport); 902 } 903 } 904 905 rcu_read_unlock(); 906 return false; 907 } 908 909 /* Performs soft reset of qedf_ctx by simulating a link down/up */ 910 void qedf_ctx_soft_reset(struct fc_lport *lport) 911 { 912 struct qedf_ctx *qedf; 913 struct qed_link_output if_link; 914 915 if (lport->vport) { 916 printk_ratelimited("Cannot issue host reset on NPIV port.\n"); 917 return; 918 } 919 920 qedf = lport_priv(lport); 921 922 qedf->flogi_pending = 0; 923 /* For host reset, essentially do a soft link up/down */ 924 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 925 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 926 "Queuing link down work.\n"); 927 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 928 0); 929 930 if (qedf_wait_for_upload(qedf) == false) { 931 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 932 WARN_ON(atomic_read(&qedf->num_offloads)); 933 } 934 935 /* Before setting link up query physical link state */ 936 qed_ops->common->get_link(qedf->cdev, &if_link); 937 /* Bail if the physical link is not up */ 938 if (!if_link.link_up) { 939 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 940 "Physical link is not up.\n"); 941 return; 942 } 943 /* Flush and wait to make sure link down is processed */ 944 flush_delayed_work(&qedf->link_update); 945 msleep(500); 946 947 atomic_set(&qedf->link_state, QEDF_LINK_UP); 948 qedf->vlan_id = 0; 949 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 950 "Queue link up work.\n"); 951 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 952 0); 953 } 954 955 /* Reset the host by gracefully logging out and then logging back in */ 956 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd) 957 { 958 struct fc_lport *lport; 959 struct qedf_ctx *qedf; 960 961 lport = shost_priv(sc_cmd->device->host); 962 qedf = lport_priv(lport); 963 964 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN || 965 test_bit(QEDF_UNLOADING, &qedf->flags)) 966 return FAILED; 967 968 QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued..."); 969 970 qedf_ctx_soft_reset(lport); 971 972 return SUCCESS; 973 } 974 975 static int qedf_slave_configure(struct scsi_device *sdev) 976 { 977 if (qedf_queue_depth) { 978 scsi_change_queue_depth(sdev, qedf_queue_depth); 979 } 980 981 return 0; 982 } 983 984 static const struct scsi_host_template qedf_host_template = { 985 .module = THIS_MODULE, 986 .name = QEDF_MODULE_NAME, 987 .this_id = -1, 988 .cmd_per_lun = 32, 989 .max_sectors = 0xffff, 990 .queuecommand = qedf_queuecommand, 991 .shost_groups = qedf_host_groups, 992 .eh_abort_handler = qedf_eh_abort, 993 .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */ 994 .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */ 995 .eh_host_reset_handler = qedf_eh_host_reset, 996 .slave_configure = qedf_slave_configure, 997 .dma_boundary = QED_HW_DMA_BOUNDARY, 998 .sg_tablesize = QEDF_MAX_BDS_PER_CMD, 999 .can_queue = FCOE_PARAMS_NUM_TASKS, 1000 .change_queue_depth = scsi_change_queue_depth, 1001 .cmd_size = sizeof(struct qedf_cmd_priv), 1002 }; 1003 1004 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen) 1005 { 1006 int rc; 1007 1008 spin_lock(&qedf_global_lock); 1009 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global); 1010 spin_unlock(&qedf_global_lock); 1011 1012 return rc; 1013 } 1014 1015 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id) 1016 { 1017 struct qedf_rport *fcport; 1018 struct fc_rport_priv *rdata; 1019 1020 rcu_read_lock(); 1021 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 1022 rdata = fcport->rdata; 1023 if (rdata == NULL) 1024 continue; 1025 if (rdata->ids.port_id == port_id) { 1026 rcu_read_unlock(); 1027 return fcport; 1028 } 1029 } 1030 rcu_read_unlock(); 1031 1032 /* Return NULL to caller to let them know fcport was not found */ 1033 return NULL; 1034 } 1035 1036 /* Transmits an ELS frame over an offloaded session */ 1037 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp) 1038 { 1039 struct fc_frame_header *fh; 1040 int rc = 0; 1041 1042 fh = fc_frame_header_get(fp); 1043 if ((fh->fh_type == FC_TYPE_ELS) && 1044 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 1045 switch (fc_frame_payload_op(fp)) { 1046 case ELS_ADISC: 1047 qedf_send_adisc(fcport, fp); 1048 rc = 1; 1049 break; 1050 } 1051 } 1052 1053 return rc; 1054 } 1055 1056 /* 1057 * qedf_xmit - qedf FCoE frame transmit function 1058 */ 1059 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp) 1060 { 1061 struct fc_lport *base_lport; 1062 struct qedf_ctx *qedf; 1063 struct ethhdr *eh; 1064 struct fcoe_crc_eof *cp; 1065 struct sk_buff *skb; 1066 struct fc_frame_header *fh; 1067 struct fcoe_hdr *hp; 1068 u8 sof, eof; 1069 u32 crc; 1070 unsigned int hlen, tlen, elen; 1071 int wlen; 1072 struct fc_lport *tmp_lport; 1073 struct fc_lport *vn_port = NULL; 1074 struct qedf_rport *fcport; 1075 int rc; 1076 u16 vlan_tci = 0; 1077 1078 qedf = (struct qedf_ctx *)lport_priv(lport); 1079 1080 fh = fc_frame_header_get(fp); 1081 skb = fp_skb(fp); 1082 1083 /* Filter out traffic to other NPIV ports on the same host */ 1084 if (lport->vport) 1085 base_lport = shost_priv(vport_to_shost(lport->vport)); 1086 else 1087 base_lport = lport; 1088 1089 /* Flag if the destination is the base port */ 1090 if (base_lport->port_id == ntoh24(fh->fh_d_id)) { 1091 vn_port = base_lport; 1092 } else { 1093 /* Got through the list of vports attached to the base_lport 1094 * and see if we have a match with the destination address. 1095 */ 1096 list_for_each_entry(tmp_lport, &base_lport->vports, list) { 1097 if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) { 1098 vn_port = tmp_lport; 1099 break; 1100 } 1101 } 1102 } 1103 if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) { 1104 struct fc_rport_priv *rdata = NULL; 1105 1106 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 1107 "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id)); 1108 kfree_skb(skb); 1109 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id)); 1110 if (rdata) { 1111 rdata->retries = lport->max_rport_retry_count; 1112 kref_put(&rdata->kref, fc_rport_destroy); 1113 } 1114 return -EINVAL; 1115 } 1116 /* End NPIV filtering */ 1117 1118 if (!qedf->ctlr.sel_fcf) { 1119 kfree_skb(skb); 1120 return 0; 1121 } 1122 1123 if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) { 1124 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n"); 1125 kfree_skb(skb); 1126 return 0; 1127 } 1128 1129 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 1130 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n"); 1131 kfree_skb(skb); 1132 return 0; 1133 } 1134 1135 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 1136 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb)) 1137 return 0; 1138 } 1139 1140 /* Check to see if this needs to be sent on an offloaded session */ 1141 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 1142 1143 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1144 rc = qedf_xmit_l2_frame(fcport, fp); 1145 /* 1146 * If the frame was successfully sent over the middle path 1147 * then do not try to also send it over the LL2 path 1148 */ 1149 if (rc) 1150 return 0; 1151 } 1152 1153 sof = fr_sof(fp); 1154 eof = fr_eof(fp); 1155 1156 elen = sizeof(struct ethhdr); 1157 hlen = sizeof(struct fcoe_hdr); 1158 tlen = sizeof(struct fcoe_crc_eof); 1159 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; 1160 1161 skb->ip_summed = CHECKSUM_NONE; 1162 crc = fcoe_fc_crc(fp); 1163 1164 /* copy port crc and eof to the skb buff */ 1165 if (skb_is_nonlinear(skb)) { 1166 skb_frag_t *frag; 1167 1168 if (qedf_get_paged_crc_eof(skb, tlen)) { 1169 kfree_skb(skb); 1170 return -ENOMEM; 1171 } 1172 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; 1173 cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag); 1174 } else { 1175 cp = skb_put(skb, tlen); 1176 } 1177 1178 memset(cp, 0, sizeof(*cp)); 1179 cp->fcoe_eof = eof; 1180 cp->fcoe_crc32 = cpu_to_le32(~crc); 1181 if (skb_is_nonlinear(skb)) { 1182 kunmap_atomic(cp); 1183 cp = NULL; 1184 } 1185 1186 1187 /* adjust skb network/transport offsets to match mac/fcoe/port */ 1188 skb_push(skb, elen + hlen); 1189 skb_reset_mac_header(skb); 1190 skb_reset_network_header(skb); 1191 skb->mac_len = elen; 1192 skb->protocol = htons(ETH_P_FCOE); 1193 1194 /* 1195 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN 1196 * for FIP/FCoE traffic. 1197 */ 1198 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id); 1199 1200 /* fill up mac and fcoe headers */ 1201 eh = eth_hdr(skb); 1202 eh->h_proto = htons(ETH_P_FCOE); 1203 if (qedf->ctlr.map_dest) 1204 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); 1205 else 1206 /* insert GW address */ 1207 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr); 1208 1209 /* Set the source MAC address */ 1210 ether_addr_copy(eh->h_source, qedf->data_src_addr); 1211 1212 hp = (struct fcoe_hdr *)(eh + 1); 1213 memset(hp, 0, sizeof(*hp)); 1214 if (FC_FCOE_VER) 1215 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); 1216 hp->fcoe_sof = sof; 1217 1218 /*update tx stats */ 1219 this_cpu_inc(lport->stats->TxFrames); 1220 this_cpu_add(lport->stats->TxWords, wlen); 1221 1222 /* Get VLAN ID from skb for printing purposes */ 1223 __vlan_hwaccel_get_tag(skb, &vlan_tci); 1224 1225 /* send down to lld */ 1226 fr_dev(fp) = lport; 1227 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: " 1228 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n", 1229 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type, 1230 vlan_tci); 1231 if (qedf_dump_frames) 1232 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 1233 1, skb->data, skb->len, false); 1234 rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0); 1235 if (rc) { 1236 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc); 1237 kfree_skb(skb); 1238 return rc; 1239 } 1240 1241 return 0; 1242 } 1243 1244 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1245 { 1246 int rval = 0; 1247 u32 *pbl; 1248 dma_addr_t page; 1249 int num_pages; 1250 1251 /* Calculate appropriate queue and PBL sizes */ 1252 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 1253 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE); 1254 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) * 1255 sizeof(void *); 1256 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE; 1257 1258 fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1259 &fcport->sq_dma, GFP_KERNEL); 1260 if (!fcport->sq) { 1261 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n"); 1262 rval = 1; 1263 goto out; 1264 } 1265 1266 fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 1267 fcport->sq_pbl_size, 1268 &fcport->sq_pbl_dma, GFP_KERNEL); 1269 if (!fcport->sq_pbl) { 1270 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n"); 1271 rval = 1; 1272 goto out_free_sq; 1273 } 1274 1275 /* Create PBL */ 1276 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE; 1277 page = fcport->sq_dma; 1278 pbl = (u32 *)fcport->sq_pbl; 1279 1280 while (num_pages--) { 1281 *pbl = U64_LO(page); 1282 pbl++; 1283 *pbl = U64_HI(page); 1284 pbl++; 1285 page += QEDF_PAGE_SIZE; 1286 } 1287 1288 return rval; 1289 1290 out_free_sq: 1291 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq, 1292 fcport->sq_dma); 1293 out: 1294 return rval; 1295 } 1296 1297 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1298 { 1299 if (fcport->sq_pbl) 1300 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size, 1301 fcport->sq_pbl, fcport->sq_pbl_dma); 1302 if (fcport->sq) 1303 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1304 fcport->sq, fcport->sq_dma); 1305 } 1306 1307 static int qedf_offload_connection(struct qedf_ctx *qedf, 1308 struct qedf_rport *fcport) 1309 { 1310 struct qed_fcoe_params_offload conn_info; 1311 u32 port_id; 1312 int rval; 1313 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe)); 1314 1315 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection " 1316 "portid=%06x.\n", fcport->rdata->ids.port_id); 1317 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle, 1318 &fcport->fw_cid, &fcport->p_doorbell); 1319 if (rval) { 1320 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection " 1321 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1322 rval = 1; /* For some reason qed returns 0 on failure here */ 1323 goto out; 1324 } 1325 1326 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x " 1327 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id, 1328 fcport->fw_cid, fcport->handle); 1329 1330 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload)); 1331 1332 /* Fill in the offload connection info */ 1333 conn_info.sq_pbl_addr = fcport->sq_pbl_dma; 1334 1335 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl); 1336 conn_info.sq_next_page_addr = 1337 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8)); 1338 1339 /* Need to use our FCoE MAC for the offload session */ 1340 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr); 1341 1342 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr); 1343 1344 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size; 1345 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov; 1346 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */ 1347 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size; 1348 1349 /* Set VLAN data */ 1350 conn_info.vlan_tag = qedf->vlan_id << 1351 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT; 1352 conn_info.vlan_tag |= 1353 qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT; 1354 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK << 1355 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT); 1356 1357 /* Set host port source id */ 1358 port_id = fc_host_port_id(qedf->lport->host); 1359 fcport->sid = port_id; 1360 conn_info.s_id.addr_hi = (port_id & 0x000000FF); 1361 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1362 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1363 1364 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq; 1365 1366 /* Set remote port destination id */ 1367 port_id = fcport->rdata->rport->port_id; 1368 conn_info.d_id.addr_hi = (port_id & 0x000000FF); 1369 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1370 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1371 1372 conn_info.def_q_idx = 0; /* Default index for send queue? */ 1373 1374 /* Set FC-TAPE specific flags if needed */ 1375 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) { 1376 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, 1377 "Enable CONF, REC for portid=%06x.\n", 1378 fcport->rdata->ids.port_id); 1379 conn_info.flags |= 1 << 1380 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT; 1381 conn_info.flags |= 1382 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) << 1383 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT; 1384 } 1385 1386 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info); 1387 if (rval) { 1388 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection " 1389 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1390 goto out_free_conn; 1391 } else 1392 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload " 1393 "succeeded portid=%06x total_sqe=%d.\n", 1394 fcport->rdata->ids.port_id, total_sqe); 1395 1396 spin_lock_init(&fcport->rport_lock); 1397 atomic_set(&fcport->free_sqes, total_sqe); 1398 return 0; 1399 out_free_conn: 1400 qed_ops->release_conn(qedf->cdev, fcport->handle); 1401 out: 1402 return rval; 1403 } 1404 1405 #define QEDF_TERM_BUFF_SIZE 10 1406 static void qedf_upload_connection(struct qedf_ctx *qedf, 1407 struct qedf_rport *fcport) 1408 { 1409 void *term_params; 1410 dma_addr_t term_params_dma; 1411 1412 /* Term params needs to be a DMA coherent buffer as qed shared the 1413 * physical DMA address with the firmware. The buffer may be used in 1414 * the receive path so we may eventually have to move this. 1415 */ 1416 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, 1417 &term_params_dma, GFP_KERNEL); 1418 if (!term_params) 1419 return; 1420 1421 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection " 1422 "port_id=%06x.\n", fcport->rdata->ids.port_id); 1423 1424 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma); 1425 qed_ops->release_conn(qedf->cdev, fcport->handle); 1426 1427 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params, 1428 term_params_dma); 1429 } 1430 1431 static void qedf_cleanup_fcport(struct qedf_ctx *qedf, 1432 struct qedf_rport *fcport) 1433 { 1434 struct fc_rport_priv *rdata = fcport->rdata; 1435 1436 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n", 1437 fcport->rdata->ids.port_id); 1438 1439 /* Flush any remaining i/o's before we upload the connection */ 1440 qedf_flush_active_ios(fcport, -1); 1441 1442 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) 1443 qedf_upload_connection(qedf, fcport); 1444 qedf_free_sq(qedf, fcport); 1445 fcport->rdata = NULL; 1446 fcport->qedf = NULL; 1447 kref_put(&rdata->kref, fc_rport_destroy); 1448 } 1449 1450 /* 1451 * This event_callback is called after successful completion of libfc 1452 * initiated target login. qedf can proceed with initiating the session 1453 * establishment. 1454 */ 1455 static void qedf_rport_event_handler(struct fc_lport *lport, 1456 struct fc_rport_priv *rdata, 1457 enum fc_rport_event event) 1458 { 1459 struct qedf_ctx *qedf = lport_priv(lport); 1460 struct fc_rport *rport = rdata->rport; 1461 struct fc_rport_libfc_priv *rp; 1462 struct qedf_rport *fcport; 1463 u32 port_id; 1464 int rval; 1465 unsigned long flags; 1466 1467 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, " 1468 "port_id = 0x%x\n", event, rdata->ids.port_id); 1469 1470 switch (event) { 1471 case RPORT_EV_READY: 1472 if (!rport) { 1473 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n"); 1474 break; 1475 } 1476 1477 rp = rport->dd_data; 1478 fcport = (struct qedf_rport *)&rp[1]; 1479 fcport->qedf = qedf; 1480 1481 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) { 1482 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading " 1483 "portid=0x%x as max number of offloaded sessions " 1484 "reached.\n", rdata->ids.port_id); 1485 return; 1486 } 1487 1488 /* 1489 * Don't try to offload the session again. Can happen when we 1490 * get an ADISC 1491 */ 1492 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1493 QEDF_WARN(&(qedf->dbg_ctx), "Session already " 1494 "offloaded, portid=0x%x.\n", 1495 rdata->ids.port_id); 1496 return; 1497 } 1498 1499 if (rport->port_id == FC_FID_DIR_SERV) { 1500 /* 1501 * qedf_rport structure doesn't exist for 1502 * directory server. 1503 * We should not come here, as lport will 1504 * take care of fabric login 1505 */ 1506 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not " 1507 "exist for dir server port_id=%x\n", 1508 rdata->ids.port_id); 1509 break; 1510 } 1511 1512 if (rdata->spp_type != FC_TYPE_FCP) { 1513 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1514 "Not offloading since spp type isn't FCP\n"); 1515 break; 1516 } 1517 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1518 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1519 "Not FCP target so not offloading\n"); 1520 break; 1521 } 1522 1523 /* Initial reference held on entry, so this can't fail */ 1524 kref_get(&rdata->kref); 1525 fcport->rdata = rdata; 1526 fcport->rport = rport; 1527 1528 rval = qedf_alloc_sq(qedf, fcport); 1529 if (rval) { 1530 qedf_cleanup_fcport(qedf, fcport); 1531 break; 1532 } 1533 1534 /* Set device type */ 1535 if (rdata->flags & FC_RP_FLAGS_RETRY && 1536 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET && 1537 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) { 1538 fcport->dev_type = QEDF_RPORT_TYPE_TAPE; 1539 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1540 "portid=%06x is a TAPE device.\n", 1541 rdata->ids.port_id); 1542 } else { 1543 fcport->dev_type = QEDF_RPORT_TYPE_DISK; 1544 } 1545 1546 rval = qedf_offload_connection(qedf, fcport); 1547 if (rval) { 1548 qedf_cleanup_fcport(qedf, fcport); 1549 break; 1550 } 1551 1552 /* Add fcport to list of qedf_ctx list of offloaded ports */ 1553 spin_lock_irqsave(&qedf->hba_lock, flags); 1554 list_add_rcu(&fcport->peers, &qedf->fcports); 1555 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1556 1557 /* 1558 * Set the session ready bit to let everyone know that this 1559 * connection is ready for I/O 1560 */ 1561 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags); 1562 atomic_inc(&qedf->num_offloads); 1563 1564 break; 1565 case RPORT_EV_LOGO: 1566 case RPORT_EV_FAILED: 1567 case RPORT_EV_STOP: 1568 port_id = rdata->ids.port_id; 1569 if (port_id == FC_FID_DIR_SERV) 1570 break; 1571 1572 if (rdata->spp_type != FC_TYPE_FCP) { 1573 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1574 "No action since spp type isn't FCP\n"); 1575 break; 1576 } 1577 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1578 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1579 "Not FCP target so no action\n"); 1580 break; 1581 } 1582 1583 if (!rport) { 1584 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1585 "port_id=%x - rport notcreated Yet!!\n", port_id); 1586 break; 1587 } 1588 rp = rport->dd_data; 1589 /* 1590 * Perform session upload. Note that rdata->peers is already 1591 * removed from disc->rports list before we get this event. 1592 */ 1593 fcport = (struct qedf_rport *)&rp[1]; 1594 1595 spin_lock_irqsave(&fcport->rport_lock, flags); 1596 /* Only free this fcport if it is offloaded already */ 1597 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) && 1598 !test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1599 &fcport->flags)) { 1600 set_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1601 &fcport->flags); 1602 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1603 qedf_cleanup_fcport(qedf, fcport); 1604 /* 1605 * Remove fcport to list of qedf_ctx list of offloaded 1606 * ports 1607 */ 1608 spin_lock_irqsave(&qedf->hba_lock, flags); 1609 list_del_rcu(&fcport->peers); 1610 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1611 1612 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1613 &fcport->flags); 1614 atomic_dec(&qedf->num_offloads); 1615 } else { 1616 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1617 } 1618 break; 1619 1620 case RPORT_EV_NONE: 1621 break; 1622 } 1623 } 1624 1625 static void qedf_abort_io(struct fc_lport *lport) 1626 { 1627 /* NO-OP but need to fill in the template */ 1628 } 1629 1630 static void qedf_fcp_cleanup(struct fc_lport *lport) 1631 { 1632 /* 1633 * NO-OP but need to fill in template to prevent a NULL 1634 * function pointer dereference during link down. I/Os 1635 * will be flushed when port is uploaded. 1636 */ 1637 } 1638 1639 static struct libfc_function_template qedf_lport_template = { 1640 .frame_send = qedf_xmit, 1641 .fcp_abort_io = qedf_abort_io, 1642 .fcp_cleanup = qedf_fcp_cleanup, 1643 .rport_event_callback = qedf_rport_event_handler, 1644 .elsct_send = qedf_elsct_send, 1645 }; 1646 1647 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf) 1648 { 1649 fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO); 1650 1651 qedf->ctlr.send = qedf_fip_send; 1652 qedf->ctlr.get_src_addr = qedf_get_src_mac; 1653 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac); 1654 } 1655 1656 static void qedf_setup_fdmi(struct qedf_ctx *qedf) 1657 { 1658 struct fc_lport *lport = qedf->lport; 1659 u8 buf[8]; 1660 int pos; 1661 uint32_t i; 1662 1663 /* 1664 * fdmi_enabled needs to be set for libfc 1665 * to execute FDMI registration 1666 */ 1667 lport->fdmi_enabled = 1; 1668 1669 /* 1670 * Setup the necessary fc_host attributes to that will be used to fill 1671 * in the FDMI information. 1672 */ 1673 1674 /* Get the PCI-e Device Serial Number Capability */ 1675 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN); 1676 if (pos) { 1677 pos += 4; 1678 for (i = 0; i < 8; i++) 1679 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]); 1680 1681 snprintf(fc_host_serial_number(lport->host), 1682 FC_SERIAL_NUMBER_SIZE, 1683 "%02X%02X%02X%02X%02X%02X%02X%02X", 1684 buf[7], buf[6], buf[5], buf[4], 1685 buf[3], buf[2], buf[1], buf[0]); 1686 } else 1687 snprintf(fc_host_serial_number(lport->host), 1688 FC_SERIAL_NUMBER_SIZE, "Unknown"); 1689 1690 snprintf(fc_host_manufacturer(lport->host), 1691 FC_SERIAL_NUMBER_SIZE, "%s", "Marvell Semiconductor Inc."); 1692 1693 if (qedf->pdev->device == QL45xxx) { 1694 snprintf(fc_host_model(lport->host), 1695 FC_SYMBOLIC_NAME_SIZE, "%s", "QL45xxx"); 1696 1697 snprintf(fc_host_model_description(lport->host), 1698 FC_SYMBOLIC_NAME_SIZE, "%s", 1699 "Marvell FastLinQ QL45xxx FCoE Adapter"); 1700 } 1701 1702 if (qedf->pdev->device == QL41xxx) { 1703 snprintf(fc_host_model(lport->host), 1704 FC_SYMBOLIC_NAME_SIZE, "%s", "QL41xxx"); 1705 1706 snprintf(fc_host_model_description(lport->host), 1707 FC_SYMBOLIC_NAME_SIZE, "%s", 1708 "Marvell FastLinQ QL41xxx FCoE Adapter"); 1709 } 1710 1711 snprintf(fc_host_hardware_version(lport->host), 1712 FC_VERSION_STRING_SIZE, "Rev %d", qedf->pdev->revision); 1713 1714 snprintf(fc_host_driver_version(lport->host), 1715 FC_VERSION_STRING_SIZE, "%s", QEDF_VERSION); 1716 1717 snprintf(fc_host_firmware_version(lport->host), 1718 FC_VERSION_STRING_SIZE, "%d.%d.%d.%d", 1719 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 1720 FW_ENGINEERING_VERSION); 1721 1722 snprintf(fc_host_vendor_identifier(lport->host), 1723 FC_VENDOR_IDENTIFIER, "%s", "Marvell"); 1724 1725 } 1726 1727 static int qedf_lport_setup(struct qedf_ctx *qedf) 1728 { 1729 struct fc_lport *lport = qedf->lport; 1730 1731 lport->link_up = 0; 1732 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1733 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1734 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1735 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1736 lport->boot_time = jiffies; 1737 lport->e_d_tov = 2 * 1000; 1738 lport->r_a_tov = 10 * 1000; 1739 1740 /* Set NPIV support */ 1741 lport->does_npiv = 1; 1742 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV; 1743 1744 fc_set_wwnn(lport, qedf->wwnn); 1745 fc_set_wwpn(lport, qedf->wwpn); 1746 1747 if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) { 1748 QEDF_ERR(&qedf->dbg_ctx, 1749 "fcoe_libfc_config failed.\n"); 1750 return -ENOMEM; 1751 } 1752 1753 /* Allocate the exchange manager */ 1754 fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS, 1755 0xfffe, NULL); 1756 1757 if (fc_lport_init_stats(lport)) 1758 return -ENOMEM; 1759 1760 /* Finish lport config */ 1761 fc_lport_config(lport); 1762 1763 /* Set max frame size */ 1764 fc_set_mfs(lport, QEDF_MFS); 1765 fc_host_maxframe_size(lport->host) = lport->mfs; 1766 1767 /* Set default dev_loss_tmo based on module parameter */ 1768 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo; 1769 1770 /* Set symbolic node name */ 1771 if (qedf->pdev->device == QL45xxx) 1772 snprintf(fc_host_symbolic_name(lport->host), 256, 1773 "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION); 1774 1775 if (qedf->pdev->device == QL41xxx) 1776 snprintf(fc_host_symbolic_name(lport->host), 256, 1777 "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION); 1778 1779 qedf_setup_fdmi(qedf); 1780 1781 return 0; 1782 } 1783 1784 /* 1785 * NPIV functions 1786 */ 1787 1788 static int qedf_vport_libfc_config(struct fc_vport *vport, 1789 struct fc_lport *lport) 1790 { 1791 lport->link_up = 0; 1792 lport->qfull = 0; 1793 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1794 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1795 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1796 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1797 lport->boot_time = jiffies; 1798 lport->e_d_tov = 2 * 1000; 1799 lport->r_a_tov = 10 * 1000; 1800 lport->does_npiv = 1; /* Temporary until we add NPIV support */ 1801 1802 /* Allocate stats for vport */ 1803 if (fc_lport_init_stats(lport)) 1804 return -ENOMEM; 1805 1806 /* Finish lport config */ 1807 fc_lport_config(lport); 1808 1809 /* offload related configuration */ 1810 lport->crc_offload = 0; 1811 lport->seq_offload = 0; 1812 lport->lro_enabled = 0; 1813 lport->lro_xid = 0; 1814 lport->lso_max = 0; 1815 1816 return 0; 1817 } 1818 1819 static int qedf_vport_create(struct fc_vport *vport, bool disabled) 1820 { 1821 struct Scsi_Host *shost = vport_to_shost(vport); 1822 struct fc_lport *n_port = shost_priv(shost); 1823 struct fc_lport *vn_port; 1824 struct qedf_ctx *base_qedf = lport_priv(n_port); 1825 struct qedf_ctx *vport_qedf; 1826 1827 char buf[32]; 1828 int rc = 0; 1829 1830 rc = fcoe_validate_vport_create(vport); 1831 if (rc) { 1832 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1833 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, " 1834 "WWPN (0x%s) already exists.\n", buf); 1835 return rc; 1836 } 1837 1838 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) { 1839 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport " 1840 "because link is not up.\n"); 1841 return -EIO; 1842 } 1843 1844 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx)); 1845 if (!vn_port) { 1846 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport " 1847 "for vport.\n"); 1848 return -ENOMEM; 1849 } 1850 1851 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1852 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n", 1853 buf); 1854 1855 /* Copy some fields from base_qedf */ 1856 vport_qedf = lport_priv(vn_port); 1857 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx)); 1858 1859 /* Set qedf data specific to this vport */ 1860 vport_qedf->lport = vn_port; 1861 /* Use same hba_lock as base_qedf */ 1862 vport_qedf->hba_lock = base_qedf->hba_lock; 1863 vport_qedf->pdev = base_qedf->pdev; 1864 vport_qedf->cmd_mgr = base_qedf->cmd_mgr; 1865 init_completion(&vport_qedf->flogi_compl); 1866 INIT_LIST_HEAD(&vport_qedf->fcports); 1867 INIT_DELAYED_WORK(&vport_qedf->stag_work, qedf_stag_change_work); 1868 1869 rc = qedf_vport_libfc_config(vport, vn_port); 1870 if (rc) { 1871 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory " 1872 "for lport stats.\n"); 1873 goto err; 1874 } 1875 1876 fc_set_wwnn(vn_port, vport->node_name); 1877 fc_set_wwpn(vn_port, vport->port_name); 1878 vport_qedf->wwnn = vn_port->wwnn; 1879 vport_qedf->wwpn = vn_port->wwpn; 1880 1881 vn_port->host->transportt = qedf_fc_vport_transport_template; 1882 vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS; 1883 vn_port->host->max_lun = qedf_max_lun; 1884 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD; 1885 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN; 1886 vn_port->host->max_id = QEDF_MAX_SESSIONS; 1887 1888 rc = scsi_add_host(vn_port->host, &vport->dev); 1889 if (rc) { 1890 QEDF_WARN(&base_qedf->dbg_ctx, 1891 "Error adding Scsi_Host rc=0x%x.\n", rc); 1892 goto err; 1893 } 1894 1895 /* Set default dev_loss_tmo based on module parameter */ 1896 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo; 1897 1898 /* Init libfc stuffs */ 1899 memcpy(&vn_port->tt, &qedf_lport_template, 1900 sizeof(qedf_lport_template)); 1901 fc_exch_init(vn_port); 1902 fc_elsct_init(vn_port); 1903 fc_lport_init(vn_port); 1904 fc_disc_init(vn_port); 1905 fc_disc_config(vn_port, vn_port); 1906 1907 1908 /* Allocate the exchange manager */ 1909 shost = vport_to_shost(vport); 1910 n_port = shost_priv(shost); 1911 fc_exch_mgr_list_clone(n_port, vn_port); 1912 1913 /* Set max frame size */ 1914 fc_set_mfs(vn_port, QEDF_MFS); 1915 1916 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN; 1917 1918 if (disabled) { 1919 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1920 } else { 1921 vn_port->boot_time = jiffies; 1922 fc_fabric_login(vn_port); 1923 fc_vport_setlink(vn_port); 1924 } 1925 1926 /* Set symbolic node name */ 1927 if (base_qedf->pdev->device == QL45xxx) 1928 snprintf(fc_host_symbolic_name(vn_port->host), 256, 1929 "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION); 1930 1931 if (base_qedf->pdev->device == QL41xxx) 1932 snprintf(fc_host_symbolic_name(vn_port->host), 256, 1933 "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION); 1934 1935 /* Set supported speed */ 1936 fc_host_supported_speeds(vn_port->host) = n_port->link_supported_speeds; 1937 1938 /* Set speed */ 1939 vn_port->link_speed = n_port->link_speed; 1940 1941 /* Set port type */ 1942 fc_host_port_type(vn_port->host) = FC_PORTTYPE_NPIV; 1943 1944 /* Set maxframe size */ 1945 fc_host_maxframe_size(vn_port->host) = n_port->mfs; 1946 1947 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n", 1948 vn_port); 1949 1950 /* Set up debug context for vport */ 1951 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no; 1952 vport_qedf->dbg_ctx.pdev = base_qedf->pdev; 1953 1954 return 0; 1955 1956 err: 1957 scsi_host_put(vn_port->host); 1958 return rc; 1959 } 1960 1961 static int qedf_vport_destroy(struct fc_vport *vport) 1962 { 1963 struct Scsi_Host *shost = vport_to_shost(vport); 1964 struct fc_lport *n_port = shost_priv(shost); 1965 struct fc_lport *vn_port = vport->dd_data; 1966 struct qedf_ctx *qedf = lport_priv(vn_port); 1967 1968 if (!qedf) { 1969 QEDF_ERR(NULL, "qedf is NULL.\n"); 1970 goto out; 1971 } 1972 1973 /* Set unloading bit on vport qedf_ctx to prevent more I/O */ 1974 set_bit(QEDF_UNLOADING, &qedf->flags); 1975 1976 mutex_lock(&n_port->lp_mutex); 1977 list_del(&vn_port->list); 1978 mutex_unlock(&n_port->lp_mutex); 1979 1980 fc_fabric_logoff(vn_port); 1981 fc_lport_destroy(vn_port); 1982 1983 /* Detach from scsi-ml */ 1984 fc_remove_host(vn_port->host); 1985 scsi_remove_host(vn_port->host); 1986 1987 /* 1988 * Only try to release the exchange manager if the vn_port 1989 * configuration is complete. 1990 */ 1991 if (vn_port->state == LPORT_ST_READY) 1992 fc_exch_mgr_free(vn_port); 1993 1994 /* Free memory used by statistical counters */ 1995 fc_lport_free_stats(vn_port); 1996 1997 /* Release Scsi_Host */ 1998 scsi_host_put(vn_port->host); 1999 2000 out: 2001 return 0; 2002 } 2003 2004 static int qedf_vport_disable(struct fc_vport *vport, bool disable) 2005 { 2006 struct fc_lport *lport = vport->dd_data; 2007 2008 if (disable) { 2009 fc_vport_set_state(vport, FC_VPORT_DISABLED); 2010 fc_fabric_logoff(lport); 2011 } else { 2012 lport->boot_time = jiffies; 2013 fc_fabric_login(lport); 2014 fc_vport_setlink(lport); 2015 } 2016 return 0; 2017 } 2018 2019 /* 2020 * During removal we need to wait for all the vports associated with a port 2021 * to be destroyed so we avoid a race condition where libfc is still trying 2022 * to reap vports while the driver remove function has already reaped the 2023 * driver contexts associated with the physical port. 2024 */ 2025 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf) 2026 { 2027 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host); 2028 2029 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 2030 "Entered.\n"); 2031 while (fc_host->npiv_vports_inuse > 0) { 2032 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 2033 "Waiting for all vports to be reaped.\n"); 2034 msleep(1000); 2035 } 2036 } 2037 2038 /** 2039 * qedf_fcoe_reset - Resets the fcoe 2040 * 2041 * @shost: shost the reset is from 2042 * 2043 * Returns: always 0 2044 */ 2045 static int qedf_fcoe_reset(struct Scsi_Host *shost) 2046 { 2047 struct fc_lport *lport = shost_priv(shost); 2048 2049 qedf_ctx_soft_reset(lport); 2050 return 0; 2051 } 2052 2053 static void qedf_get_host_port_id(struct Scsi_Host *shost) 2054 { 2055 struct fc_lport *lport = shost_priv(shost); 2056 2057 fc_host_port_id(shost) = lport->port_id; 2058 } 2059 2060 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host 2061 *shost) 2062 { 2063 struct fc_host_statistics *qedf_stats; 2064 struct fc_lport *lport = shost_priv(shost); 2065 struct qedf_ctx *qedf = lport_priv(lport); 2066 struct qed_fcoe_stats *fw_fcoe_stats; 2067 2068 qedf_stats = fc_get_host_stats(shost); 2069 2070 /* We don't collect offload stats for specific NPIV ports */ 2071 if (lport->vport) 2072 goto out; 2073 2074 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL); 2075 if (!fw_fcoe_stats) { 2076 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for " 2077 "fw_fcoe_stats.\n"); 2078 goto out; 2079 } 2080 2081 mutex_lock(&qedf->stats_mutex); 2082 2083 /* Query firmware for offload stats */ 2084 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats); 2085 2086 /* 2087 * The expectation is that we add our offload stats to the stats 2088 * being maintained by libfc each time the fc_get_host_status callback 2089 * is invoked. The additions are not carried over for each call to 2090 * the fc_get_host_stats callback. 2091 */ 2092 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt + 2093 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt + 2094 fw_fcoe_stats->fcoe_tx_other_pkt_cnt; 2095 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt + 2096 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt + 2097 fw_fcoe_stats->fcoe_rx_other_pkt_cnt; 2098 qedf_stats->fcp_input_megabytes += 2099 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000); 2100 qedf_stats->fcp_output_megabytes += 2101 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000); 2102 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4; 2103 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4; 2104 qedf_stats->invalid_crc_count += 2105 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt; 2106 qedf_stats->dumped_frames = 2107 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 2108 qedf_stats->error_frames += 2109 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 2110 qedf_stats->fcp_input_requests += qedf->input_requests; 2111 qedf_stats->fcp_output_requests += qedf->output_requests; 2112 qedf_stats->fcp_control_requests += qedf->control_requests; 2113 qedf_stats->fcp_packet_aborts += qedf->packet_aborts; 2114 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures; 2115 2116 mutex_unlock(&qedf->stats_mutex); 2117 kfree(fw_fcoe_stats); 2118 out: 2119 return qedf_stats; 2120 } 2121 2122 static struct fc_function_template qedf_fc_transport_fn = { 2123 .show_host_node_name = 1, 2124 .show_host_port_name = 1, 2125 .show_host_supported_classes = 1, 2126 .show_host_supported_fc4s = 1, 2127 .show_host_active_fc4s = 1, 2128 .show_host_maxframe_size = 1, 2129 2130 .get_host_port_id = qedf_get_host_port_id, 2131 .show_host_port_id = 1, 2132 .show_host_supported_speeds = 1, 2133 .get_host_speed = fc_get_host_speed, 2134 .show_host_speed = 1, 2135 .show_host_port_type = 1, 2136 .get_host_port_state = fc_get_host_port_state, 2137 .show_host_port_state = 1, 2138 .show_host_symbolic_name = 1, 2139 2140 /* 2141 * Tell FC transport to allocate enough space to store the backpointer 2142 * for the associate qedf_rport struct. 2143 */ 2144 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2145 sizeof(struct qedf_rport)), 2146 .show_rport_maxframe_size = 1, 2147 .show_rport_supported_classes = 1, 2148 .show_host_fabric_name = 1, 2149 .show_starget_node_name = 1, 2150 .show_starget_port_name = 1, 2151 .show_starget_port_id = 1, 2152 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2153 .show_rport_dev_loss_tmo = 1, 2154 .get_fc_host_stats = qedf_fc_get_host_stats, 2155 .issue_fc_host_lip = qedf_fcoe_reset, 2156 .vport_create = qedf_vport_create, 2157 .vport_delete = qedf_vport_destroy, 2158 .vport_disable = qedf_vport_disable, 2159 .bsg_request = fc_lport_bsg_request, 2160 }; 2161 2162 static struct fc_function_template qedf_fc_vport_transport_fn = { 2163 .show_host_node_name = 1, 2164 .show_host_port_name = 1, 2165 .show_host_supported_classes = 1, 2166 .show_host_supported_fc4s = 1, 2167 .show_host_active_fc4s = 1, 2168 .show_host_maxframe_size = 1, 2169 .show_host_port_id = 1, 2170 .show_host_supported_speeds = 1, 2171 .get_host_speed = fc_get_host_speed, 2172 .show_host_speed = 1, 2173 .show_host_port_type = 1, 2174 .get_host_port_state = fc_get_host_port_state, 2175 .show_host_port_state = 1, 2176 .show_host_symbolic_name = 1, 2177 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2178 sizeof(struct qedf_rport)), 2179 .show_rport_maxframe_size = 1, 2180 .show_rport_supported_classes = 1, 2181 .show_host_fabric_name = 1, 2182 .show_starget_node_name = 1, 2183 .show_starget_port_name = 1, 2184 .show_starget_port_id = 1, 2185 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2186 .show_rport_dev_loss_tmo = 1, 2187 .get_fc_host_stats = fc_get_host_stats, 2188 .issue_fc_host_lip = qedf_fcoe_reset, 2189 .bsg_request = fc_lport_bsg_request, 2190 }; 2191 2192 static bool qedf_fp_has_work(struct qedf_fastpath *fp) 2193 { 2194 struct qedf_ctx *qedf = fp->qedf; 2195 struct global_queue *que; 2196 struct qed_sb_info *sb_info = fp->sb_info; 2197 struct status_block *sb = sb_info->sb_virt; 2198 u16 prod_idx; 2199 2200 /* Get the pointer to the global CQ this completion is on */ 2201 que = qedf->global_queues[fp->sb_id]; 2202 2203 /* Be sure all responses have been written to PI */ 2204 rmb(); 2205 2206 /* Get the current firmware producer index */ 2207 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2208 2209 return (que->cq_prod_idx != prod_idx); 2210 } 2211 2212 /* 2213 * Interrupt handler code. 2214 */ 2215 2216 /* Process completion queue and copy CQE contents for deferred processesing 2217 * 2218 * Return true if we should wake the I/O thread, false if not. 2219 */ 2220 static bool qedf_process_completions(struct qedf_fastpath *fp) 2221 { 2222 struct qedf_ctx *qedf = fp->qedf; 2223 struct qed_sb_info *sb_info = fp->sb_info; 2224 struct status_block *sb = sb_info->sb_virt; 2225 struct global_queue *que; 2226 u16 prod_idx; 2227 struct fcoe_cqe *cqe; 2228 struct qedf_io_work *io_work; 2229 unsigned int cpu; 2230 struct qedf_ioreq *io_req = NULL; 2231 u16 xid; 2232 u16 new_cqes; 2233 u32 comp_type; 2234 2235 /* Get the current firmware producer index */ 2236 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2237 2238 /* Get the pointer to the global CQ this completion is on */ 2239 que = qedf->global_queues[fp->sb_id]; 2240 2241 /* Calculate the amount of new elements since last processing */ 2242 new_cqes = (prod_idx >= que->cq_prod_idx) ? 2243 (prod_idx - que->cq_prod_idx) : 2244 0x10000 - que->cq_prod_idx + prod_idx; 2245 2246 /* Save producer index */ 2247 que->cq_prod_idx = prod_idx; 2248 2249 while (new_cqes) { 2250 fp->completions++; 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 u8 io_comp_type; 2810 unsigned long flags; 2811 2812 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2813 FCOE_CQE_CQE_TYPE_MASK; 2814 2815 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2816 io_req = &qedf->cmd_mgr->cmds[xid]; 2817 2818 /* Completion not for a valid I/O anymore so just return */ 2819 if (!io_req) { 2820 QEDF_ERR(&qedf->dbg_ctx, 2821 "io_req is NULL for xid=0x%x.\n", xid); 2822 return; 2823 } 2824 2825 fcport = io_req->fcport; 2826 2827 if (fcport == NULL) { 2828 QEDF_ERR(&qedf->dbg_ctx, 2829 "fcport is NULL for xid=0x%x io_req=%p.\n", 2830 xid, io_req); 2831 return; 2832 } 2833 2834 /* 2835 * Check that fcport is offloaded. If it isn't then the spinlock 2836 * isn't valid and shouldn't be taken. We should just return. 2837 */ 2838 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 2839 QEDF_ERR(&qedf->dbg_ctx, 2840 "Session not offloaded yet, fcport = %p.\n", fcport); 2841 return; 2842 } 2843 2844 spin_lock_irqsave(&fcport->rport_lock, flags); 2845 io_comp_type = io_req->cmd_type; 2846 spin_unlock_irqrestore(&fcport->rport_lock, flags); 2847 2848 switch (comp_type) { 2849 case FCOE_GOOD_COMPLETION_CQE_TYPE: 2850 atomic_inc(&fcport->free_sqes); 2851 switch (io_comp_type) { 2852 case QEDF_SCSI_CMD: 2853 qedf_scsi_completion(qedf, cqe, io_req); 2854 break; 2855 case QEDF_ELS: 2856 qedf_process_els_compl(qedf, cqe, io_req); 2857 break; 2858 case QEDF_TASK_MGMT_CMD: 2859 qedf_process_tmf_compl(qedf, cqe, io_req); 2860 break; 2861 case QEDF_SEQ_CLEANUP: 2862 qedf_process_seq_cleanup_compl(qedf, cqe, io_req); 2863 break; 2864 } 2865 break; 2866 case FCOE_ERROR_DETECTION_CQE_TYPE: 2867 atomic_inc(&fcport->free_sqes); 2868 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2869 "Error detect CQE.\n"); 2870 qedf_process_error_detect(qedf, cqe, io_req); 2871 break; 2872 case FCOE_EXCH_CLEANUP_CQE_TYPE: 2873 atomic_inc(&fcport->free_sqes); 2874 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2875 "Cleanup CQE.\n"); 2876 qedf_process_cleanup_compl(qedf, cqe, io_req); 2877 break; 2878 case FCOE_ABTS_CQE_TYPE: 2879 atomic_inc(&fcport->free_sqes); 2880 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2881 "Abort CQE.\n"); 2882 qedf_process_abts_compl(qedf, cqe, io_req); 2883 break; 2884 case FCOE_DUMMY_CQE_TYPE: 2885 atomic_inc(&fcport->free_sqes); 2886 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2887 "Dummy CQE.\n"); 2888 break; 2889 case FCOE_LOCAL_COMP_CQE_TYPE: 2890 atomic_inc(&fcport->free_sqes); 2891 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2892 "Local completion CQE.\n"); 2893 break; 2894 case FCOE_WARNING_CQE_TYPE: 2895 atomic_inc(&fcport->free_sqes); 2896 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2897 "Warning CQE.\n"); 2898 qedf_process_warning_compl(qedf, cqe, io_req); 2899 break; 2900 case MAX_FCOE_CQE_TYPE: 2901 atomic_inc(&fcport->free_sqes); 2902 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2903 "Max FCoE CQE.\n"); 2904 break; 2905 default: 2906 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2907 "Default CQE.\n"); 2908 break; 2909 } 2910 } 2911 2912 static void qedf_free_bdq(struct qedf_ctx *qedf) 2913 { 2914 int i; 2915 2916 if (qedf->bdq_pbl_list) 2917 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE, 2918 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma); 2919 2920 if (qedf->bdq_pbl) 2921 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size, 2922 qedf->bdq_pbl, qedf->bdq_pbl_dma); 2923 2924 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2925 if (qedf->bdq[i].buf_addr) { 2926 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE, 2927 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma); 2928 } 2929 } 2930 } 2931 2932 static void qedf_free_global_queues(struct qedf_ctx *qedf) 2933 { 2934 int i; 2935 struct global_queue **gl = qedf->global_queues; 2936 2937 for (i = 0; i < qedf->num_queues; i++) { 2938 if (!gl[i]) 2939 continue; 2940 2941 if (gl[i]->cq) 2942 dma_free_coherent(&qedf->pdev->dev, 2943 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma); 2944 if (gl[i]->cq_pbl) 2945 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size, 2946 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 2947 2948 kfree(gl[i]); 2949 } 2950 2951 qedf_free_bdq(qedf); 2952 } 2953 2954 static int qedf_alloc_bdq(struct qedf_ctx *qedf) 2955 { 2956 int i; 2957 struct scsi_bd *pbl; 2958 u64 *list; 2959 2960 /* Alloc dma memory for BDQ buffers */ 2961 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2962 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev, 2963 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL); 2964 if (!qedf->bdq[i].buf_addr) { 2965 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ " 2966 "buffer %d.\n", i); 2967 return -ENOMEM; 2968 } 2969 } 2970 2971 /* Alloc dma memory for BDQ page buffer list */ 2972 qedf->bdq_pbl_mem_size = 2973 QEDF_BDQ_SIZE * sizeof(struct scsi_bd); 2974 qedf->bdq_pbl_mem_size = 2975 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE); 2976 2977 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 2978 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL); 2979 if (!qedf->bdq_pbl) { 2980 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n"); 2981 return -ENOMEM; 2982 } 2983 2984 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2985 "BDQ PBL addr=0x%p dma=%pad\n", 2986 qedf->bdq_pbl, &qedf->bdq_pbl_dma); 2987 2988 /* 2989 * Populate BDQ PBL with physical and virtual address of individual 2990 * BDQ buffers 2991 */ 2992 pbl = (struct scsi_bd *)qedf->bdq_pbl; 2993 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2994 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma)); 2995 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma)); 2996 pbl->opaque.fcoe_opaque.hi = 0; 2997 /* Opaque lo data is an index into the BDQ array */ 2998 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i); 2999 pbl++; 3000 } 3001 3002 /* Allocate list of PBL pages */ 3003 qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev, 3004 QEDF_PAGE_SIZE, 3005 &qedf->bdq_pbl_list_dma, 3006 GFP_KERNEL); 3007 if (!qedf->bdq_pbl_list) { 3008 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n"); 3009 return -ENOMEM; 3010 } 3011 3012 /* 3013 * Now populate PBL list with pages that contain pointers to the 3014 * individual buffers. 3015 */ 3016 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size / 3017 QEDF_PAGE_SIZE; 3018 list = (u64 *)qedf->bdq_pbl_list; 3019 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) { 3020 *list = qedf->bdq_pbl_dma; 3021 list++; 3022 } 3023 3024 return 0; 3025 } 3026 3027 static int qedf_alloc_global_queues(struct qedf_ctx *qedf) 3028 { 3029 u32 *list; 3030 int i; 3031 int status; 3032 u32 *pbl; 3033 dma_addr_t page; 3034 int num_pages; 3035 3036 /* Allocate and map CQs, RQs */ 3037 /* 3038 * Number of global queues (CQ / RQ). This should 3039 * be <= number of available MSIX vectors for the PF 3040 */ 3041 if (!qedf->num_queues) { 3042 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n"); 3043 return -ENOMEM; 3044 } 3045 3046 /* 3047 * Make sure we allocated the PBL that will contain the physical 3048 * addresses of our queues 3049 */ 3050 if (!qedf->p_cpuq) { 3051 QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n"); 3052 return -EINVAL; 3053 } 3054 3055 qedf->global_queues = kzalloc((sizeof(struct global_queue *) 3056 * qedf->num_queues), GFP_KERNEL); 3057 if (!qedf->global_queues) { 3058 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global " 3059 "queues array ptr memory\n"); 3060 return -ENOMEM; 3061 } 3062 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3063 "qedf->global_queues=%p.\n", qedf->global_queues); 3064 3065 /* Allocate DMA coherent buffers for BDQ */ 3066 status = qedf_alloc_bdq(qedf); 3067 if (status) { 3068 QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n"); 3069 goto mem_alloc_failure; 3070 } 3071 3072 /* Allocate a CQ and an associated PBL for each MSI-X vector */ 3073 for (i = 0; i < qedf->num_queues; i++) { 3074 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue), 3075 GFP_KERNEL); 3076 if (!qedf->global_queues[i]) { 3077 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate " 3078 "global queue %d.\n", i); 3079 status = -ENOMEM; 3080 goto mem_alloc_failure; 3081 } 3082 3083 qedf->global_queues[i]->cq_mem_size = 3084 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3085 qedf->global_queues[i]->cq_mem_size = 3086 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE); 3087 3088 qedf->global_queues[i]->cq_pbl_size = 3089 (qedf->global_queues[i]->cq_mem_size / 3090 PAGE_SIZE) * sizeof(void *); 3091 qedf->global_queues[i]->cq_pbl_size = 3092 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE); 3093 3094 qedf->global_queues[i]->cq = 3095 dma_alloc_coherent(&qedf->pdev->dev, 3096 qedf->global_queues[i]->cq_mem_size, 3097 &qedf->global_queues[i]->cq_dma, 3098 GFP_KERNEL); 3099 3100 if (!qedf->global_queues[i]->cq) { 3101 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n"); 3102 status = -ENOMEM; 3103 goto mem_alloc_failure; 3104 } 3105 3106 qedf->global_queues[i]->cq_pbl = 3107 dma_alloc_coherent(&qedf->pdev->dev, 3108 qedf->global_queues[i]->cq_pbl_size, 3109 &qedf->global_queues[i]->cq_pbl_dma, 3110 GFP_KERNEL); 3111 3112 if (!qedf->global_queues[i]->cq_pbl) { 3113 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n"); 3114 status = -ENOMEM; 3115 goto mem_alloc_failure; 3116 } 3117 3118 /* Create PBL */ 3119 num_pages = qedf->global_queues[i]->cq_mem_size / 3120 QEDF_PAGE_SIZE; 3121 page = qedf->global_queues[i]->cq_dma; 3122 pbl = (u32 *)qedf->global_queues[i]->cq_pbl; 3123 3124 while (num_pages--) { 3125 *pbl = U64_LO(page); 3126 pbl++; 3127 *pbl = U64_HI(page); 3128 pbl++; 3129 page += QEDF_PAGE_SIZE; 3130 } 3131 /* Set the initial consumer index for cq */ 3132 qedf->global_queues[i]->cq_cons_idx = 0; 3133 } 3134 3135 list = (u32 *)qedf->p_cpuq; 3136 3137 /* 3138 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 3139 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 3140 * to the physical address which contains an array of pointers to 3141 * the physical addresses of the specific queue pages. 3142 */ 3143 for (i = 0; i < qedf->num_queues; i++) { 3144 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma); 3145 list++; 3146 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma); 3147 list++; 3148 *list = U64_LO(0); 3149 list++; 3150 *list = U64_HI(0); 3151 list++; 3152 } 3153 3154 return 0; 3155 3156 mem_alloc_failure: 3157 qedf_free_global_queues(qedf); 3158 return status; 3159 } 3160 3161 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf) 3162 { 3163 u8 sq_num_pbl_pages; 3164 u32 sq_mem_size; 3165 u32 cq_mem_size; 3166 u32 cq_num_entries; 3167 int rval; 3168 3169 /* 3170 * The number of completion queues/fastpath interrupts/status blocks 3171 * we allocation is the minimum off: 3172 * 3173 * Number of CPUs 3174 * Number allocated by qed for our PCI function 3175 */ 3176 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf); 3177 3178 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n", 3179 qedf->num_queues); 3180 3181 qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev, 3182 qedf->num_queues * sizeof(struct qedf_glbl_q_params), 3183 &qedf->hw_p_cpuq, GFP_KERNEL); 3184 3185 if (!qedf->p_cpuq) { 3186 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n"); 3187 return 1; 3188 } 3189 3190 rval = qedf_alloc_global_queues(qedf); 3191 if (rval) { 3192 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation " 3193 "failed.\n"); 3194 return 1; 3195 } 3196 3197 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */ 3198 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 3199 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE); 3200 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE); 3201 3202 /* Calculate CQ num entries */ 3203 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3204 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE); 3205 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe); 3206 3207 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params)); 3208 3209 /* Setup the value for fcoe PF */ 3210 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS; 3211 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS; 3212 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr = 3213 (u64)qedf->hw_p_cpuq; 3214 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages; 3215 3216 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0; 3217 3218 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries; 3219 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues; 3220 3221 /* log_page_size: 12 for 4KB pages */ 3222 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE); 3223 3224 qedf->pf_params.fcoe_pf_params.mtu = 9000; 3225 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI; 3226 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI; 3227 3228 /* BDQ address and size */ 3229 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] = 3230 qedf->bdq_pbl_list_dma; 3231 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] = 3232 qedf->bdq_pbl_list_num_entries; 3233 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE; 3234 3235 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3236 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n", 3237 qedf->bdq_pbl_list, 3238 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0], 3239 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]); 3240 3241 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3242 "cq_num_entries=%d.\n", 3243 qedf->pf_params.fcoe_pf_params.cq_num_entries); 3244 3245 return 0; 3246 } 3247 3248 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 3249 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf) 3250 { 3251 size_t size = 0; 3252 3253 if (qedf->p_cpuq) { 3254 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params); 3255 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq, 3256 qedf->hw_p_cpuq); 3257 } 3258 3259 qedf_free_global_queues(qedf); 3260 3261 kfree(qedf->global_queues); 3262 } 3263 3264 /* 3265 * PCI driver functions 3266 */ 3267 3268 static const struct pci_device_id qedf_pci_tbl[] = { 3269 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) }, 3270 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) }, 3271 {0} 3272 }; 3273 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl); 3274 3275 static struct pci_driver qedf_pci_driver = { 3276 .name = QEDF_MODULE_NAME, 3277 .id_table = qedf_pci_tbl, 3278 .probe = qedf_probe, 3279 .remove = qedf_remove, 3280 .shutdown = qedf_shutdown, 3281 .suspend = qedf_suspend, 3282 }; 3283 3284 static int __qedf_probe(struct pci_dev *pdev, int mode) 3285 { 3286 int rc = -EINVAL; 3287 struct fc_lport *lport; 3288 struct qedf_ctx *qedf = NULL; 3289 struct Scsi_Host *host; 3290 bool is_vf = false; 3291 struct qed_ll2_params params; 3292 char host_buf[20]; 3293 struct qed_link_params link_params; 3294 int status; 3295 void *task_start, *task_end; 3296 struct qed_slowpath_params slowpath_params; 3297 struct qed_probe_params qed_params; 3298 u16 retry_cnt = 10; 3299 3300 /* 3301 * When doing error recovery we didn't reap the lport so don't try 3302 * to reallocate it. 3303 */ 3304 retry_probe: 3305 if (mode == QEDF_MODE_RECOVERY) 3306 msleep(2000); 3307 3308 if (mode != QEDF_MODE_RECOVERY) { 3309 lport = libfc_host_alloc(&qedf_host_template, 3310 sizeof(struct qedf_ctx)); 3311 3312 if (!lport) { 3313 QEDF_ERR(NULL, "Could not allocate lport.\n"); 3314 rc = -ENOMEM; 3315 goto err0; 3316 } 3317 3318 fc_disc_init(lport); 3319 3320 /* Initialize qedf_ctx */ 3321 qedf = lport_priv(lport); 3322 set_bit(QEDF_PROBING, &qedf->flags); 3323 qedf->lport = lport; 3324 qedf->ctlr.lp = lport; 3325 qedf->pdev = pdev; 3326 qedf->dbg_ctx.pdev = pdev; 3327 qedf->dbg_ctx.host_no = lport->host->host_no; 3328 spin_lock_init(&qedf->hba_lock); 3329 INIT_LIST_HEAD(&qedf->fcports); 3330 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1; 3331 atomic_set(&qedf->num_offloads, 0); 3332 qedf->stop_io_on_error = false; 3333 pci_set_drvdata(pdev, qedf); 3334 init_completion(&qedf->fipvlan_compl); 3335 mutex_init(&qedf->stats_mutex); 3336 mutex_init(&qedf->flush_mutex); 3337 qedf->flogi_pending = 0; 3338 3339 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, 3340 "QLogic FastLinQ FCoE Module qedf %s, " 3341 "FW %d.%d.%d.%d\n", QEDF_VERSION, 3342 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 3343 FW_ENGINEERING_VERSION); 3344 } else { 3345 /* Init pointers during recovery */ 3346 qedf = pci_get_drvdata(pdev); 3347 set_bit(QEDF_PROBING, &qedf->flags); 3348 lport = qedf->lport; 3349 } 3350 3351 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n"); 3352 3353 host = lport->host; 3354 3355 /* Allocate mempool for qedf_io_work structs */ 3356 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN, 3357 qedf_io_work_cache); 3358 if (qedf->io_mempool == NULL) { 3359 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n"); 3360 goto err1; 3361 } 3362 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n", 3363 qedf->io_mempool); 3364 3365 sprintf(host_buf, "qedf_%u_link", 3366 qedf->lport->host->host_no); 3367 qedf->link_update_wq = create_workqueue(host_buf); 3368 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update); 3369 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery); 3370 INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump); 3371 INIT_DELAYED_WORK(&qedf->stag_work, qedf_stag_change_work); 3372 qedf->fipvlan_retries = qedf_fipvlan_retries; 3373 /* Set a default prio in case DCBX doesn't converge */ 3374 if (qedf_default_prio > -1) { 3375 /* 3376 * This is the case where we pass a modparam in so we want to 3377 * honor it even if dcbx doesn't converge. 3378 */ 3379 qedf->prio = qedf_default_prio; 3380 } else 3381 qedf->prio = QEDF_DEFAULT_PRIO; 3382 3383 /* 3384 * Common probe. Takes care of basic hardware init and pci_* 3385 * functions. 3386 */ 3387 memset(&qed_params, 0, sizeof(qed_params)); 3388 qed_params.protocol = QED_PROTOCOL_FCOE; 3389 qed_params.dp_module = qedf_dp_module; 3390 qed_params.dp_level = qedf_dp_level; 3391 qed_params.is_vf = is_vf; 3392 qedf->cdev = qed_ops->common->probe(pdev, &qed_params); 3393 if (!qedf->cdev) { 3394 if ((mode == QEDF_MODE_RECOVERY) && retry_cnt) { 3395 QEDF_ERR(&qedf->dbg_ctx, 3396 "Retry %d initialize hardware\n", retry_cnt); 3397 retry_cnt--; 3398 goto retry_probe; 3399 } 3400 QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n"); 3401 rc = -ENODEV; 3402 goto err1; 3403 } 3404 3405 /* Learn information crucial for qedf to progress */ 3406 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3407 if (rc) { 3408 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n"); 3409 goto err1; 3410 } 3411 3412 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 3413 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n", 3414 qedf->dev_info.common.num_hwfns, 3415 qed_ops->common->get_affin_hwfn_idx(qedf->cdev)); 3416 3417 /* queue allocation code should come here 3418 * order should be 3419 * slowpath_start 3420 * status block allocation 3421 * interrupt registration (to get min number of queues) 3422 * set_fcoe_pf_param 3423 * qed_sp_fcoe_func_start 3424 */ 3425 rc = qedf_set_fcoe_pf_param(qedf); 3426 if (rc) { 3427 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n"); 3428 goto err2; 3429 } 3430 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3431 3432 /* Learn information crucial for qedf to progress */ 3433 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3434 if (rc) { 3435 QEDF_ERR(&qedf->dbg_ctx, "Failed to fill dev info.\n"); 3436 goto err2; 3437 } 3438 3439 if (mode != QEDF_MODE_RECOVERY) { 3440 qedf->devlink = qed_ops->common->devlink_register(qedf->cdev); 3441 if (IS_ERR(qedf->devlink)) { 3442 QEDF_ERR(&qedf->dbg_ctx, "Cannot register devlink\n"); 3443 rc = PTR_ERR(qedf->devlink); 3444 qedf->devlink = NULL; 3445 goto err2; 3446 } 3447 } 3448 3449 /* Record BDQ producer doorbell addresses */ 3450 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr; 3451 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr; 3452 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3453 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod, 3454 qedf->bdq_secondary_prod); 3455 3456 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf); 3457 3458 rc = qedf_prepare_sb(qedf); 3459 if (rc) { 3460 3461 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3462 goto err2; 3463 } 3464 3465 /* Start the Slowpath-process */ 3466 slowpath_params.int_mode = QED_INT_MODE_MSIX; 3467 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER; 3468 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER; 3469 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER; 3470 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER; 3471 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE); 3472 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params); 3473 if (rc) { 3474 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3475 goto err2; 3476 } 3477 3478 /* 3479 * update_pf_params needs to be called before and after slowpath 3480 * start 3481 */ 3482 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3483 3484 /* Setup interrupts */ 3485 rc = qedf_setup_int(qedf); 3486 if (rc) { 3487 QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n"); 3488 goto err3; 3489 } 3490 3491 rc = qed_ops->start(qedf->cdev, &qedf->tasks); 3492 if (rc) { 3493 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n"); 3494 goto err4; 3495 } 3496 task_start = qedf_get_task_mem(&qedf->tasks, 0); 3497 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1); 3498 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, " 3499 "end=%p block_size=%u.\n", task_start, task_end, 3500 qedf->tasks.size); 3501 3502 /* 3503 * We need to write the number of BDs in the BDQ we've preallocated so 3504 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 3505 * packet arrives. 3506 */ 3507 qedf->bdq_prod_idx = QEDF_BDQ_SIZE; 3508 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3509 "Writing %d to primary and secondary BDQ doorbell registers.\n", 3510 qedf->bdq_prod_idx); 3511 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod); 3512 readw(qedf->bdq_primary_prod); 3513 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod); 3514 readw(qedf->bdq_secondary_prod); 3515 3516 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3517 3518 /* Now that the dev_info struct has been filled in set the MAC 3519 * address 3520 */ 3521 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac); 3522 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n", 3523 qedf->mac); 3524 3525 /* 3526 * Set the WWNN and WWPN in the following way: 3527 * 3528 * If the info we get from qed is non-zero then use that to set the 3529 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based 3530 * on the MAC address. 3531 */ 3532 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) { 3533 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3534 "Setting WWPN and WWNN from qed dev_info.\n"); 3535 qedf->wwnn = qedf->dev_info.wwnn; 3536 qedf->wwpn = qedf->dev_info.wwpn; 3537 } else { 3538 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3539 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n"); 3540 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0); 3541 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0); 3542 } 3543 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx " 3544 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn); 3545 3546 sprintf(host_buf, "host_%d", host->host_no); 3547 qed_ops->common->set_name(qedf->cdev, host_buf); 3548 3549 /* Allocate cmd mgr */ 3550 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf); 3551 if (!qedf->cmd_mgr) { 3552 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n"); 3553 rc = -ENOMEM; 3554 goto err5; 3555 } 3556 3557 if (mode != QEDF_MODE_RECOVERY) { 3558 host->transportt = qedf_fc_transport_template; 3559 host->max_lun = qedf_max_lun; 3560 host->max_cmd_len = QEDF_MAX_CDB_LEN; 3561 host->max_id = QEDF_MAX_SESSIONS; 3562 host->can_queue = FCOE_PARAMS_NUM_TASKS; 3563 rc = scsi_add_host(host, &pdev->dev); 3564 if (rc) { 3565 QEDF_WARN(&qedf->dbg_ctx, 3566 "Error adding Scsi_Host rc=0x%x.\n", rc); 3567 goto err6; 3568 } 3569 } 3570 3571 memset(¶ms, 0, sizeof(params)); 3572 params.mtu = QEDF_LL2_BUF_SIZE; 3573 ether_addr_copy(params.ll2_mac_address, qedf->mac); 3574 3575 /* Start LL2 processing thread */ 3576 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no); 3577 qedf->ll2_recv_wq = 3578 create_workqueue(host_buf); 3579 if (!qedf->ll2_recv_wq) { 3580 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n"); 3581 rc = -ENOMEM; 3582 goto err7; 3583 } 3584 3585 #ifdef CONFIG_DEBUG_FS 3586 qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops, 3587 qedf_dbg_fops); 3588 #endif 3589 3590 /* Start LL2 */ 3591 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf); 3592 rc = qed_ops->ll2->start(qedf->cdev, ¶ms); 3593 if (rc) { 3594 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n"); 3595 goto err7; 3596 } 3597 set_bit(QEDF_LL2_STARTED, &qedf->flags); 3598 3599 /* Set initial FIP/FCoE VLAN to NULL */ 3600 qedf->vlan_id = 0; 3601 3602 /* 3603 * No need to setup fcoe_ctlr or fc_lport objects during recovery since 3604 * they were not reaped during the unload process. 3605 */ 3606 if (mode != QEDF_MODE_RECOVERY) { 3607 /* Setup imbedded fcoe controller */ 3608 qedf_fcoe_ctlr_setup(qedf); 3609 3610 /* Setup lport */ 3611 rc = qedf_lport_setup(qedf); 3612 if (rc) { 3613 QEDF_ERR(&(qedf->dbg_ctx), 3614 "qedf_lport_setup failed.\n"); 3615 goto err7; 3616 } 3617 } 3618 3619 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no); 3620 qedf->timer_work_queue = 3621 create_workqueue(host_buf); 3622 if (!qedf->timer_work_queue) { 3623 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer " 3624 "workqueue.\n"); 3625 rc = -ENOMEM; 3626 goto err7; 3627 } 3628 3629 /* DPC workqueue is not reaped during recovery unload */ 3630 if (mode != QEDF_MODE_RECOVERY) { 3631 sprintf(host_buf, "qedf_%u_dpc", 3632 qedf->lport->host->host_no); 3633 qedf->dpc_wq = create_workqueue(host_buf); 3634 } 3635 INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler); 3636 3637 /* 3638 * GRC dump and sysfs parameters are not reaped during the recovery 3639 * unload process. 3640 */ 3641 if (mode != QEDF_MODE_RECOVERY) { 3642 qedf->grcdump_size = 3643 qed_ops->common->dbg_all_data_size(qedf->cdev); 3644 if (qedf->grcdump_size) { 3645 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump, 3646 qedf->grcdump_size); 3647 if (rc) { 3648 QEDF_ERR(&(qedf->dbg_ctx), 3649 "GRC Dump buffer alloc failed.\n"); 3650 qedf->grcdump = NULL; 3651 } 3652 3653 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3654 "grcdump: addr=%p, size=%u.\n", 3655 qedf->grcdump, qedf->grcdump_size); 3656 } 3657 qedf_create_sysfs_ctx_attr(qedf); 3658 3659 /* Initialize I/O tracing for this adapter */ 3660 spin_lock_init(&qedf->io_trace_lock); 3661 qedf->io_trace_idx = 0; 3662 } 3663 3664 init_completion(&qedf->flogi_compl); 3665 3666 status = qed_ops->common->update_drv_state(qedf->cdev, true); 3667 if (status) 3668 QEDF_ERR(&(qedf->dbg_ctx), 3669 "Failed to send drv state to MFW.\n"); 3670 3671 memset(&link_params, 0, sizeof(struct qed_link_params)); 3672 link_params.link_up = true; 3673 status = qed_ops->common->set_link(qedf->cdev, &link_params); 3674 if (status) 3675 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n"); 3676 3677 /* Start/restart discovery */ 3678 if (mode == QEDF_MODE_RECOVERY) 3679 fcoe_ctlr_link_up(&qedf->ctlr); 3680 else 3681 fc_fabric_login(lport); 3682 3683 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n"); 3684 3685 clear_bit(QEDF_PROBING, &qedf->flags); 3686 3687 /* All good */ 3688 return 0; 3689 3690 err7: 3691 if (qedf->ll2_recv_wq) 3692 destroy_workqueue(qedf->ll2_recv_wq); 3693 fc_remove_host(qedf->lport->host); 3694 scsi_remove_host(qedf->lport->host); 3695 #ifdef CONFIG_DEBUG_FS 3696 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3697 #endif 3698 err6: 3699 qedf_cmd_mgr_free(qedf->cmd_mgr); 3700 err5: 3701 qed_ops->stop(qedf->cdev); 3702 err4: 3703 qedf_free_fcoe_pf_param(qedf); 3704 qedf_sync_free_irqs(qedf); 3705 err3: 3706 qed_ops->common->slowpath_stop(qedf->cdev); 3707 err2: 3708 qed_ops->common->remove(qedf->cdev); 3709 err1: 3710 scsi_host_put(lport->host); 3711 err0: 3712 return rc; 3713 } 3714 3715 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id) 3716 { 3717 return __qedf_probe(pdev, QEDF_MODE_NORMAL); 3718 } 3719 3720 static void __qedf_remove(struct pci_dev *pdev, int mode) 3721 { 3722 struct qedf_ctx *qedf; 3723 int rc; 3724 3725 if (!pdev) { 3726 QEDF_ERR(NULL, "pdev is NULL.\n"); 3727 return; 3728 } 3729 3730 qedf = pci_get_drvdata(pdev); 3731 3732 /* 3733 * Prevent race where we're in board disable work and then try to 3734 * rmmod the module. 3735 */ 3736 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 3737 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n"); 3738 return; 3739 } 3740 3741 if (mode != QEDF_MODE_RECOVERY) 3742 set_bit(QEDF_UNLOADING, &qedf->flags); 3743 3744 /* Logoff the fabric to upload all connections */ 3745 if (mode == QEDF_MODE_RECOVERY) 3746 fcoe_ctlr_link_down(&qedf->ctlr); 3747 else 3748 fc_fabric_logoff(qedf->lport); 3749 3750 if (!qedf_wait_for_upload(qedf)) 3751 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 3752 3753 #ifdef CONFIG_DEBUG_FS 3754 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3755 #endif 3756 3757 /* Stop any link update handling */ 3758 cancel_delayed_work_sync(&qedf->link_update); 3759 destroy_workqueue(qedf->link_update_wq); 3760 qedf->link_update_wq = NULL; 3761 3762 if (qedf->timer_work_queue) 3763 destroy_workqueue(qedf->timer_work_queue); 3764 3765 /* Stop Light L2 */ 3766 clear_bit(QEDF_LL2_STARTED, &qedf->flags); 3767 qed_ops->ll2->stop(qedf->cdev); 3768 if (qedf->ll2_recv_wq) 3769 destroy_workqueue(qedf->ll2_recv_wq); 3770 3771 /* Stop fastpath */ 3772 qedf_sync_free_irqs(qedf); 3773 qedf_destroy_sb(qedf); 3774 3775 /* 3776 * During recovery don't destroy OS constructs that represent the 3777 * physical port. 3778 */ 3779 if (mode != QEDF_MODE_RECOVERY) { 3780 qedf_free_grc_dump_buf(&qedf->grcdump); 3781 qedf_remove_sysfs_ctx_attr(qedf); 3782 3783 /* Remove all SCSI/libfc/libfcoe structures */ 3784 fcoe_ctlr_destroy(&qedf->ctlr); 3785 fc_lport_destroy(qedf->lport); 3786 fc_remove_host(qedf->lport->host); 3787 scsi_remove_host(qedf->lport->host); 3788 } 3789 3790 qedf_cmd_mgr_free(qedf->cmd_mgr); 3791 3792 if (mode != QEDF_MODE_RECOVERY) { 3793 fc_exch_mgr_free(qedf->lport); 3794 fc_lport_free_stats(qedf->lport); 3795 3796 /* Wait for all vports to be reaped */ 3797 qedf_wait_for_vport_destroy(qedf); 3798 } 3799 3800 /* 3801 * Now that all connections have been uploaded we can stop the 3802 * rest of the qed operations 3803 */ 3804 qed_ops->stop(qedf->cdev); 3805 3806 if (mode != QEDF_MODE_RECOVERY) { 3807 if (qedf->dpc_wq) { 3808 /* Stop general DPC handling */ 3809 destroy_workqueue(qedf->dpc_wq); 3810 qedf->dpc_wq = NULL; 3811 } 3812 } 3813 3814 /* Final shutdown for the board */ 3815 qedf_free_fcoe_pf_param(qedf); 3816 if (mode != QEDF_MODE_RECOVERY) { 3817 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3818 pci_set_drvdata(pdev, NULL); 3819 } 3820 3821 rc = qed_ops->common->update_drv_state(qedf->cdev, false); 3822 if (rc) 3823 QEDF_ERR(&(qedf->dbg_ctx), 3824 "Failed to send drv state to MFW.\n"); 3825 3826 if (mode != QEDF_MODE_RECOVERY && qedf->devlink) { 3827 qed_ops->common->devlink_unregister(qedf->devlink); 3828 qedf->devlink = NULL; 3829 } 3830 3831 qed_ops->common->slowpath_stop(qedf->cdev); 3832 qed_ops->common->remove(qedf->cdev); 3833 3834 mempool_destroy(qedf->io_mempool); 3835 3836 /* Only reap the Scsi_host on a real removal */ 3837 if (mode != QEDF_MODE_RECOVERY) 3838 scsi_host_put(qedf->lport->host); 3839 } 3840 3841 static void qedf_remove(struct pci_dev *pdev) 3842 { 3843 /* Check to make sure this function wasn't already disabled */ 3844 if (!atomic_read(&pdev->enable_cnt)) 3845 return; 3846 3847 __qedf_remove(pdev, QEDF_MODE_NORMAL); 3848 } 3849 3850 void qedf_wq_grcdump(struct work_struct *work) 3851 { 3852 struct qedf_ctx *qedf = 3853 container_of(work, struct qedf_ctx, grcdump_work.work); 3854 3855 QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n"); 3856 qedf_capture_grc_dump(qedf); 3857 } 3858 3859 void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type) 3860 { 3861 struct qedf_ctx *qedf = dev; 3862 3863 QEDF_ERR(&(qedf->dbg_ctx), 3864 "Hardware error handler scheduled, event=%d.\n", 3865 err_type); 3866 3867 if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) { 3868 QEDF_ERR(&(qedf->dbg_ctx), 3869 "Already in recovery, not scheduling board disable work.\n"); 3870 return; 3871 } 3872 3873 switch (err_type) { 3874 case QED_HW_ERR_FAN_FAIL: 3875 schedule_delayed_work(&qedf->board_disable_work, 0); 3876 break; 3877 case QED_HW_ERR_MFW_RESP_FAIL: 3878 case QED_HW_ERR_HW_ATTN: 3879 case QED_HW_ERR_DMAE_FAIL: 3880 case QED_HW_ERR_FW_ASSERT: 3881 /* Prevent HW attentions from being reasserted */ 3882 qed_ops->common->attn_clr_enable(qedf->cdev, true); 3883 break; 3884 case QED_HW_ERR_RAMROD_FAIL: 3885 /* Prevent HW attentions from being reasserted */ 3886 qed_ops->common->attn_clr_enable(qedf->cdev, true); 3887 3888 if (qedf_enable_recovery && qedf->devlink) 3889 qed_ops->common->report_fatal_error(qedf->devlink, 3890 err_type); 3891 3892 break; 3893 default: 3894 break; 3895 } 3896 } 3897 3898 /* 3899 * Protocol TLV handler 3900 */ 3901 void qedf_get_protocol_tlv_data(void *dev, void *data) 3902 { 3903 struct qedf_ctx *qedf = dev; 3904 struct qed_mfw_tlv_fcoe *fcoe = data; 3905 struct fc_lport *lport; 3906 struct Scsi_Host *host; 3907 struct fc_host_attrs *fc_host; 3908 struct fc_host_statistics *hst; 3909 3910 if (!qedf) { 3911 QEDF_ERR(NULL, "qedf is null.\n"); 3912 return; 3913 } 3914 3915 if (test_bit(QEDF_PROBING, &qedf->flags)) { 3916 QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n"); 3917 return; 3918 } 3919 3920 lport = qedf->lport; 3921 host = lport->host; 3922 fc_host = shost_to_fc_host(host); 3923 3924 /* Force a refresh of the fc_host stats including offload stats */ 3925 hst = qedf_fc_get_host_stats(host); 3926 3927 fcoe->qos_pri_set = true; 3928 fcoe->qos_pri = 3; /* Hard coded to 3 in driver */ 3929 3930 fcoe->ra_tov_set = true; 3931 fcoe->ra_tov = lport->r_a_tov; 3932 3933 fcoe->ed_tov_set = true; 3934 fcoe->ed_tov = lport->e_d_tov; 3935 3936 fcoe->npiv_state_set = true; 3937 fcoe->npiv_state = 1; /* NPIV always enabled */ 3938 3939 fcoe->num_npiv_ids_set = true; 3940 fcoe->num_npiv_ids = fc_host->npiv_vports_inuse; 3941 3942 /* Certain attributes we only want to set if we've selected an FCF */ 3943 if (qedf->ctlr.sel_fcf) { 3944 fcoe->switch_name_set = true; 3945 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name); 3946 } 3947 3948 fcoe->port_state_set = true; 3949 /* For qedf we're either link down or fabric attach */ 3950 if (lport->link_up) 3951 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC; 3952 else 3953 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE; 3954 3955 fcoe->link_failures_set = true; 3956 fcoe->link_failures = (u16)hst->link_failure_count; 3957 3958 fcoe->fcoe_txq_depth_set = true; 3959 fcoe->fcoe_rxq_depth_set = true; 3960 fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS; 3961 fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS; 3962 3963 fcoe->fcoe_rx_frames_set = true; 3964 fcoe->fcoe_rx_frames = hst->rx_frames; 3965 3966 fcoe->fcoe_tx_frames_set = true; 3967 fcoe->fcoe_tx_frames = hst->tx_frames; 3968 3969 fcoe->fcoe_rx_bytes_set = true; 3970 fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000; 3971 3972 fcoe->fcoe_tx_bytes_set = true; 3973 fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000; 3974 3975 fcoe->crc_count_set = true; 3976 fcoe->crc_count = hst->invalid_crc_count; 3977 3978 fcoe->tx_abts_set = true; 3979 fcoe->tx_abts = hst->fcp_packet_aborts; 3980 3981 fcoe->tx_lun_rst_set = true; 3982 fcoe->tx_lun_rst = qedf->lun_resets; 3983 3984 fcoe->abort_task_sets_set = true; 3985 fcoe->abort_task_sets = qedf->packet_aborts; 3986 3987 fcoe->scsi_busy_set = true; 3988 fcoe->scsi_busy = qedf->busy; 3989 3990 fcoe->scsi_tsk_full_set = true; 3991 fcoe->scsi_tsk_full = qedf->task_set_fulls; 3992 } 3993 3994 /* Deferred work function to perform soft context reset on STAG change */ 3995 void qedf_stag_change_work(struct work_struct *work) 3996 { 3997 struct qedf_ctx *qedf = 3998 container_of(work, struct qedf_ctx, stag_work.work); 3999 4000 printk_ratelimited("[%s]:[%s:%d]:%d: Performing software context reset.", 4001 dev_name(&qedf->pdev->dev), __func__, __LINE__, 4002 qedf->dbg_ctx.host_no); 4003 qedf_ctx_soft_reset(qedf->lport); 4004 } 4005 4006 static void qedf_shutdown(struct pci_dev *pdev) 4007 { 4008 __qedf_remove(pdev, QEDF_MODE_NORMAL); 4009 } 4010 4011 static int qedf_suspend(struct pci_dev *pdev, pm_message_t state) 4012 { 4013 struct qedf_ctx *qedf; 4014 4015 if (!pdev) { 4016 QEDF_ERR(NULL, "pdev is NULL.\n"); 4017 return -ENODEV; 4018 } 4019 4020 qedf = pci_get_drvdata(pdev); 4021 4022 QEDF_ERR(&qedf->dbg_ctx, "%s: Device does not support suspend operation\n", __func__); 4023 4024 return -EPERM; 4025 } 4026 4027 /* 4028 * Recovery handler code 4029 */ 4030 static void qedf_schedule_recovery_handler(void *dev) 4031 { 4032 struct qedf_ctx *qedf = dev; 4033 4034 QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n"); 4035 schedule_delayed_work(&qedf->recovery_work, 0); 4036 } 4037 4038 static void qedf_recovery_handler(struct work_struct *work) 4039 { 4040 struct qedf_ctx *qedf = 4041 container_of(work, struct qedf_ctx, recovery_work.work); 4042 4043 if (test_and_set_bit(QEDF_IN_RECOVERY, &qedf->flags)) 4044 return; 4045 4046 /* 4047 * Call common_ops->recovery_prolog to allow the MFW to quiesce 4048 * any PCI transactions. 4049 */ 4050 qed_ops->common->recovery_prolog(qedf->cdev); 4051 4052 QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n"); 4053 __qedf_remove(qedf->pdev, QEDF_MODE_RECOVERY); 4054 /* 4055 * Reset link and dcbx to down state since we will not get a link down 4056 * event from the MFW but calling __qedf_remove will essentially be a 4057 * link down event. 4058 */ 4059 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 4060 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 4061 __qedf_probe(qedf->pdev, QEDF_MODE_RECOVERY); 4062 clear_bit(QEDF_IN_RECOVERY, &qedf->flags); 4063 QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n"); 4064 } 4065 4066 /* Generic TLV data callback */ 4067 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 4068 { 4069 struct qedf_ctx *qedf; 4070 4071 if (!dev) { 4072 QEDF_INFO(NULL, QEDF_LOG_EVT, 4073 "dev is NULL so ignoring get_generic_tlv_data request.\n"); 4074 return; 4075 } 4076 qedf = (struct qedf_ctx *)dev; 4077 4078 memset(data, 0, sizeof(struct qed_generic_tlvs)); 4079 ether_addr_copy(data->mac[0], qedf->mac); 4080 } 4081 4082 /* 4083 * Module Init/Remove 4084 */ 4085 4086 static int __init qedf_init(void) 4087 { 4088 int ret; 4089 4090 /* If debug=1 passed, set the default log mask */ 4091 if (qedf_debug == QEDF_LOG_DEFAULT) 4092 qedf_debug = QEDF_DEFAULT_LOG_MASK; 4093 4094 /* 4095 * Check that default prio for FIP/FCoE traffic is between 0..7 if a 4096 * value has been set 4097 */ 4098 if (qedf_default_prio > -1) 4099 if (qedf_default_prio > 7) { 4100 qedf_default_prio = QEDF_DEFAULT_PRIO; 4101 QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n", 4102 QEDF_DEFAULT_PRIO); 4103 } 4104 4105 /* Print driver banner */ 4106 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR, 4107 QEDF_VERSION); 4108 4109 /* Create kmem_cache for qedf_io_work structs */ 4110 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache", 4111 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL); 4112 if (qedf_io_work_cache == NULL) { 4113 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n"); 4114 goto err1; 4115 } 4116 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n", 4117 qedf_io_work_cache); 4118 4119 qed_ops = qed_get_fcoe_ops(); 4120 if (!qed_ops) { 4121 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n"); 4122 goto err1; 4123 } 4124 4125 #ifdef CONFIG_DEBUG_FS 4126 qedf_dbg_init("qedf"); 4127 #endif 4128 4129 qedf_fc_transport_template = 4130 fc_attach_transport(&qedf_fc_transport_fn); 4131 if (!qedf_fc_transport_template) { 4132 QEDF_ERR(NULL, "Could not register with FC transport\n"); 4133 goto err2; 4134 } 4135 4136 qedf_fc_vport_transport_template = 4137 fc_attach_transport(&qedf_fc_vport_transport_fn); 4138 if (!qedf_fc_vport_transport_template) { 4139 QEDF_ERR(NULL, "Could not register vport template with FC " 4140 "transport\n"); 4141 goto err3; 4142 } 4143 4144 qedf_io_wq = create_workqueue("qedf_io_wq"); 4145 if (!qedf_io_wq) { 4146 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n"); 4147 goto err4; 4148 } 4149 4150 qedf_cb_ops.get_login_failures = qedf_get_login_failures; 4151 4152 ret = pci_register_driver(&qedf_pci_driver); 4153 if (ret) { 4154 QEDF_ERR(NULL, "Failed to register driver\n"); 4155 goto err5; 4156 } 4157 4158 return 0; 4159 4160 err5: 4161 destroy_workqueue(qedf_io_wq); 4162 err4: 4163 fc_release_transport(qedf_fc_vport_transport_template); 4164 err3: 4165 fc_release_transport(qedf_fc_transport_template); 4166 err2: 4167 #ifdef CONFIG_DEBUG_FS 4168 qedf_dbg_exit(); 4169 #endif 4170 qed_put_fcoe_ops(); 4171 err1: 4172 return -EINVAL; 4173 } 4174 4175 static void __exit qedf_cleanup(void) 4176 { 4177 pci_unregister_driver(&qedf_pci_driver); 4178 4179 destroy_workqueue(qedf_io_wq); 4180 4181 fc_release_transport(qedf_fc_vport_transport_template); 4182 fc_release_transport(qedf_fc_transport_template); 4183 #ifdef CONFIG_DEBUG_FS 4184 qedf_dbg_exit(); 4185 #endif 4186 qed_put_fcoe_ops(); 4187 4188 kmem_cache_destroy(qedf_io_work_cache); 4189 } 4190 4191 MODULE_LICENSE("GPL"); 4192 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module"); 4193 MODULE_AUTHOR("QLogic Corporation"); 4194 MODULE_VERSION(QEDF_VERSION); 4195 module_init(qedf_init); 4196 module_exit(qedf_cleanup); 4197