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 qedf->flogi_pending++; 322 323 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 324 QEDF_ERR(&qedf->dbg_ctx, "Driver unloading\n"); 325 qedf->flogi_pending = 0; 326 } 327 328 if (qedf->flogi_pending >= QEDF_FLOGI_RETRY_CNT) { 329 schedule_delayed_work(&qedf->stag_work, 2); 330 return NULL; 331 } 332 333 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp, 334 arg, timeout); 335 } 336 337 return fc_elsct_send(lport, did, fp, op, resp, arg, timeout); 338 } 339 340 int qedf_send_flogi(struct qedf_ctx *qedf) 341 { 342 struct fc_lport *lport; 343 struct fc_frame *fp; 344 345 lport = qedf->lport; 346 347 if (!lport->tt.elsct_send) { 348 QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n"); 349 return -EINVAL; 350 } 351 352 fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); 353 if (!fp) { 354 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n"); 355 return -ENOMEM; 356 } 357 358 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 359 "Sending FLOGI to reestablish session with switch.\n"); 360 lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, 361 ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov); 362 363 init_completion(&qedf->flogi_compl); 364 365 return 0; 366 } 367 368 /* 369 * This function is called if link_down_tmo is in use. If we get a link up and 370 * link_down_tmo has not expired then use just FLOGI/ADISC to recover our 371 * sessions with targets. Otherwise, just call fcoe_ctlr_link_up(). 372 */ 373 static void qedf_link_recovery(struct work_struct *work) 374 { 375 struct qedf_ctx *qedf = 376 container_of(work, struct qedf_ctx, link_recovery.work); 377 struct fc_lport *lport = qedf->lport; 378 struct fc_rport_priv *rdata; 379 bool rc; 380 int retries = 30; 381 int rval, i; 382 struct list_head rdata_login_list; 383 384 INIT_LIST_HEAD(&rdata_login_list); 385 386 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 387 "Link down tmo did not expire.\n"); 388 389 /* 390 * Essentially reset the fcoe_ctlr here without affecting the state 391 * of the libfc structs. 392 */ 393 qedf->ctlr.state = FIP_ST_LINK_WAIT; 394 fcoe_ctlr_link_down(&qedf->ctlr); 395 396 /* 397 * Bring the link up before we send the fipvlan request so libfcoe 398 * can select a new fcf in parallel 399 */ 400 fcoe_ctlr_link_up(&qedf->ctlr); 401 402 /* Since the link when down and up to verify which vlan we're on */ 403 qedf->fipvlan_retries = qedf_fipvlan_retries; 404 rc = qedf_initiate_fipvlan_req(qedf); 405 /* If getting the VLAN fails, set the VLAN to the fallback one */ 406 if (!rc) 407 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 408 409 /* 410 * We need to wait for an FCF to be selected due to the 411 * fcoe_ctlr_link_up other the FLOGI will be rejected. 412 */ 413 while (retries > 0) { 414 if (qedf->ctlr.sel_fcf) { 415 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 416 "FCF reselected, proceeding with FLOGI.\n"); 417 break; 418 } 419 msleep(500); 420 retries--; 421 } 422 423 if (retries < 1) { 424 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for " 425 "FCF selection.\n"); 426 return; 427 } 428 429 rval = qedf_send_flogi(qedf); 430 if (rval) 431 return; 432 433 /* Wait for FLOGI completion before proceeding with sending ADISCs */ 434 i = wait_for_completion_timeout(&qedf->flogi_compl, 435 qedf->lport->r_a_tov); 436 if (i == 0) { 437 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n"); 438 return; 439 } 440 441 /* 442 * Call lport->tt.rport_login which will cause libfc to send an 443 * ADISC since the rport is in state ready. 444 */ 445 mutex_lock(&lport->disc.disc_mutex); 446 list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) { 447 if (kref_get_unless_zero(&rdata->kref)) { 448 fc_rport_login(rdata); 449 kref_put(&rdata->kref, fc_rport_destroy); 450 } 451 } 452 mutex_unlock(&lport->disc.disc_mutex); 453 } 454 455 static void qedf_update_link_speed(struct qedf_ctx *qedf, 456 struct qed_link_output *link) 457 { 458 __ETHTOOL_DECLARE_LINK_MODE_MASK(sup_caps); 459 struct fc_lport *lport = qedf->lport; 460 461 lport->link_speed = FC_PORTSPEED_UNKNOWN; 462 lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN; 463 464 /* Set fc_host link speed */ 465 switch (link->speed) { 466 case 10000: 467 lport->link_speed = FC_PORTSPEED_10GBIT; 468 break; 469 case 25000: 470 lport->link_speed = FC_PORTSPEED_25GBIT; 471 break; 472 case 40000: 473 lport->link_speed = FC_PORTSPEED_40GBIT; 474 break; 475 case 50000: 476 lport->link_speed = FC_PORTSPEED_50GBIT; 477 break; 478 case 100000: 479 lport->link_speed = FC_PORTSPEED_100GBIT; 480 break; 481 case 20000: 482 lport->link_speed = FC_PORTSPEED_20GBIT; 483 break; 484 default: 485 lport->link_speed = FC_PORTSPEED_UNKNOWN; 486 break; 487 } 488 489 /* 490 * Set supported link speed by querying the supported 491 * capabilities of the link. 492 */ 493 494 phylink_zero(sup_caps); 495 phylink_set(sup_caps, 10000baseT_Full); 496 phylink_set(sup_caps, 10000baseKX4_Full); 497 phylink_set(sup_caps, 10000baseR_FEC); 498 phylink_set(sup_caps, 10000baseCR_Full); 499 phylink_set(sup_caps, 10000baseSR_Full); 500 phylink_set(sup_caps, 10000baseLR_Full); 501 phylink_set(sup_caps, 10000baseLRM_Full); 502 phylink_set(sup_caps, 10000baseKR_Full); 503 504 if (linkmode_intersects(link->supported_caps, sup_caps)) 505 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT; 506 507 phylink_zero(sup_caps); 508 phylink_set(sup_caps, 25000baseKR_Full); 509 phylink_set(sup_caps, 25000baseCR_Full); 510 phylink_set(sup_caps, 25000baseSR_Full); 511 512 if (linkmode_intersects(link->supported_caps, sup_caps)) 513 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT; 514 515 phylink_zero(sup_caps); 516 phylink_set(sup_caps, 40000baseLR4_Full); 517 phylink_set(sup_caps, 40000baseKR4_Full); 518 phylink_set(sup_caps, 40000baseCR4_Full); 519 phylink_set(sup_caps, 40000baseSR4_Full); 520 521 if (linkmode_intersects(link->supported_caps, sup_caps)) 522 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT; 523 524 phylink_zero(sup_caps); 525 phylink_set(sup_caps, 50000baseKR2_Full); 526 phylink_set(sup_caps, 50000baseCR2_Full); 527 phylink_set(sup_caps, 50000baseSR2_Full); 528 529 if (linkmode_intersects(link->supported_caps, sup_caps)) 530 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT; 531 532 phylink_zero(sup_caps); 533 phylink_set(sup_caps, 100000baseKR4_Full); 534 phylink_set(sup_caps, 100000baseSR4_Full); 535 phylink_set(sup_caps, 100000baseCR4_Full); 536 phylink_set(sup_caps, 100000baseLR4_ER4_Full); 537 538 if (linkmode_intersects(link->supported_caps, sup_caps)) 539 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT; 540 541 phylink_zero(sup_caps); 542 phylink_set(sup_caps, 20000baseKR2_Full); 543 544 if (linkmode_intersects(link->supported_caps, sup_caps)) 545 lport->link_supported_speeds |= FC_PORTSPEED_20GBIT; 546 547 if (lport->host && lport->host->shost_data) 548 fc_host_supported_speeds(lport->host) = 549 lport->link_supported_speeds; 550 } 551 552 static void qedf_bw_update(void *dev) 553 { 554 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 555 struct qed_link_output link; 556 557 /* Get the latest status of the link */ 558 qed_ops->common->get_link(qedf->cdev, &link); 559 560 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 561 QEDF_ERR(&qedf->dbg_ctx, 562 "Ignore link update, driver getting unload.\n"); 563 return; 564 } 565 566 if (link.link_up) { 567 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) 568 qedf_update_link_speed(qedf, &link); 569 else 570 QEDF_ERR(&qedf->dbg_ctx, 571 "Ignore bw update, link is down.\n"); 572 573 } else { 574 QEDF_ERR(&qedf->dbg_ctx, "link_up is not set.\n"); 575 } 576 } 577 578 static void qedf_link_update(void *dev, struct qed_link_output *link) 579 { 580 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 581 582 /* 583 * Prevent race where we're removing the module and we get link update 584 * for qed. 585 */ 586 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 587 QEDF_ERR(&qedf->dbg_ctx, 588 "Ignore link update, driver getting unload.\n"); 589 return; 590 } 591 592 if (link->link_up) { 593 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 594 QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC, 595 "Ignoring link up event as link is already up.\n"); 596 return; 597 } 598 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n", 599 link->speed / 1000); 600 601 /* Cancel any pending link down work */ 602 cancel_delayed_work(&qedf->link_update); 603 604 atomic_set(&qedf->link_state, QEDF_LINK_UP); 605 qedf_update_link_speed(qedf, link); 606 607 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE || 608 qedf_dcbx_no_wait) { 609 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 610 "DCBx done.\n"); 611 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 612 queue_delayed_work(qedf->link_update_wq, 613 &qedf->link_recovery, 0); 614 else 615 queue_delayed_work(qedf->link_update_wq, 616 &qedf->link_update, 0); 617 atomic_set(&qedf->link_down_tmo_valid, 0); 618 } 619 620 } else { 621 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n"); 622 623 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 624 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 625 /* 626 * Flag that we're waiting for the link to come back up before 627 * informing the fcoe layer of the event. 628 */ 629 if (qedf_link_down_tmo > 0) { 630 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 631 "Starting link down tmo.\n"); 632 atomic_set(&qedf->link_down_tmo_valid, 1); 633 } 634 qedf->vlan_id = 0; 635 qedf_update_link_speed(qedf, link); 636 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 637 qedf_link_down_tmo * HZ); 638 } 639 } 640 641 642 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type) 643 { 644 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 645 u8 tmp_prio; 646 647 QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe " 648 "prio=%d.\n", get->operational.valid, get->operational.enabled, 649 get->operational.app_prio.fcoe); 650 651 if (get->operational.enabled && get->operational.valid) { 652 /* If DCBX was already negotiated on link up then just exit */ 653 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) { 654 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 655 "DCBX already set on link up.\n"); 656 return; 657 } 658 659 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE); 660 661 /* 662 * Set the 8021q priority in the following manner: 663 * 664 * 1. If a modparam is set use that 665 * 2. If the value is not between 0..7 use the default 666 * 3. Use the priority we get from the DCBX app tag 667 */ 668 tmp_prio = get->operational.app_prio.fcoe; 669 if (qedf_default_prio > -1) 670 qedf->prio = qedf_default_prio; 671 else if (tmp_prio > 7) { 672 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 673 "FIP/FCoE prio %d out of range, setting to %d.\n", 674 tmp_prio, QEDF_DEFAULT_PRIO); 675 qedf->prio = QEDF_DEFAULT_PRIO; 676 } else 677 qedf->prio = tmp_prio; 678 679 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP && 680 !qedf_dcbx_no_wait) { 681 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 682 queue_delayed_work(qedf->link_update_wq, 683 &qedf->link_recovery, 0); 684 else 685 queue_delayed_work(qedf->link_update_wq, 686 &qedf->link_update, 0); 687 atomic_set(&qedf->link_down_tmo_valid, 0); 688 } 689 } 690 691 } 692 693 static u32 qedf_get_login_failures(void *cookie) 694 { 695 struct qedf_ctx *qedf; 696 697 qedf = (struct qedf_ctx *)cookie; 698 return qedf->flogi_failed; 699 } 700 701 static struct qed_fcoe_cb_ops qedf_cb_ops = { 702 { 703 .link_update = qedf_link_update, 704 .bw_update = qedf_bw_update, 705 .schedule_recovery_handler = qedf_schedule_recovery_handler, 706 .dcbx_aen = qedf_dcbx_handler, 707 .get_generic_tlv_data = qedf_get_generic_tlv_data, 708 .get_protocol_tlv_data = qedf_get_protocol_tlv_data, 709 .schedule_hw_err_handler = qedf_schedule_hw_err_handler, 710 } 711 }; 712 713 /* 714 * Various transport templates. 715 */ 716 717 static struct scsi_transport_template *qedf_fc_transport_template; 718 static struct scsi_transport_template *qedf_fc_vport_transport_template; 719 720 /* 721 * SCSI EH handlers 722 */ 723 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd) 724 { 725 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); 726 struct fc_lport *lport; 727 struct qedf_ctx *qedf; 728 struct qedf_ioreq *io_req; 729 struct fc_rport_libfc_priv *rp = rport->dd_data; 730 struct fc_rport_priv *rdata; 731 struct qedf_rport *fcport = NULL; 732 int rc = FAILED; 733 int wait_count = 100; 734 int refcount = 0; 735 int rval; 736 int got_ref = 0; 737 738 lport = shost_priv(sc_cmd->device->host); 739 qedf = (struct qedf_ctx *)lport_priv(lport); 740 741 /* rport and tgt are allocated together, so tgt should be non-NULL */ 742 fcport = (struct qedf_rport *)&rp[1]; 743 rdata = fcport->rdata; 744 if (!rdata || !kref_get_unless_zero(&rdata->kref)) { 745 QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd); 746 rc = SUCCESS; 747 goto out; 748 } 749 750 751 io_req = qedf_priv(sc_cmd)->io_req; 752 if (!io_req) { 753 QEDF_ERR(&qedf->dbg_ctx, 754 "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n", 755 sc_cmd, sc_cmd->cmnd[0], 756 rdata->ids.port_id); 757 rc = SUCCESS; 758 goto drop_rdata_kref; 759 } 760 761 rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */ 762 if (rval) 763 got_ref = 1; 764 765 /* If we got a valid io_req, confirm it belongs to this sc_cmd. */ 766 if (!rval || io_req->sc_cmd != sc_cmd) { 767 QEDF_ERR(&qedf->dbg_ctx, 768 "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n", 769 io_req->sc_cmd, sc_cmd, rdata->ids.port_id); 770 771 goto drop_rdata_kref; 772 } 773 774 if (fc_remote_port_chkready(rport)) { 775 refcount = kref_read(&io_req->refcount); 776 QEDF_ERR(&qedf->dbg_ctx, 777 "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n", 778 io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0], 779 refcount, rdata->ids.port_id); 780 781 goto drop_rdata_kref; 782 } 783 784 rc = fc_block_rport(rport); 785 if (rc) 786 goto drop_rdata_kref; 787 788 if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) { 789 QEDF_ERR(&qedf->dbg_ctx, 790 "Connection uploading, xid=0x%x., port_id=%06x\n", 791 io_req->xid, rdata->ids.port_id); 792 while (io_req->sc_cmd && (wait_count != 0)) { 793 msleep(100); 794 wait_count--; 795 } 796 if (wait_count) { 797 QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n"); 798 rc = SUCCESS; 799 } else { 800 QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n"); 801 rc = FAILED; 802 } 803 goto drop_rdata_kref; 804 } 805 806 if (lport->state != LPORT_ST_READY || !(lport->link_up)) { 807 QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n"); 808 goto drop_rdata_kref; 809 } 810 811 QEDF_ERR(&qedf->dbg_ctx, 812 "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n", 813 io_req, sc_cmd, io_req->xid, io_req->fp_idx, 814 rdata->ids.port_id); 815 816 if (qedf->stop_io_on_error) { 817 qedf_stop_all_io(qedf); 818 rc = SUCCESS; 819 goto drop_rdata_kref; 820 } 821 822 init_completion(&io_req->abts_done); 823 rval = qedf_initiate_abts(io_req, true); 824 if (rval) { 825 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n"); 826 /* 827 * If we fail to queue the ABTS then return this command to 828 * the SCSI layer as it will own and free the xid 829 */ 830 rc = SUCCESS; 831 qedf_scsi_done(qedf, io_req, DID_ERROR); 832 goto drop_rdata_kref; 833 } 834 835 wait_for_completion(&io_req->abts_done); 836 837 if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS || 838 io_req->event == QEDF_IOREQ_EV_ABORT_FAILED || 839 io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) { 840 /* 841 * If we get a reponse to the abort this is success from 842 * the perspective that all references to the command have 843 * been removed from the driver and firmware 844 */ 845 rc = SUCCESS; 846 } else { 847 /* If the abort and cleanup failed then return a failure */ 848 rc = FAILED; 849 } 850 851 if (rc == SUCCESS) 852 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n", 853 io_req->xid); 854 else 855 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n", 856 io_req->xid); 857 858 drop_rdata_kref: 859 kref_put(&rdata->kref, fc_rport_destroy); 860 out: 861 if (got_ref) 862 kref_put(&io_req->refcount, qedf_release_cmd); 863 return rc; 864 } 865 866 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd) 867 { 868 struct scsi_target *starget = scsi_target(sc_cmd->device); 869 struct fc_rport *rport = starget_to_rport(starget); 870 871 QEDF_ERR(NULL, "TARGET RESET Issued..."); 872 return qedf_initiate_tmf(rport, 0, FCP_TMF_TGT_RESET); 873 } 874 875 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd) 876 { 877 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); 878 879 QEDF_ERR(NULL, "LUN RESET Issued...\n"); 880 return qedf_initiate_tmf(rport, sc_cmd->device->lun, FCP_TMF_LUN_RESET); 881 } 882 883 bool qedf_wait_for_upload(struct qedf_ctx *qedf) 884 { 885 struct qedf_rport *fcport; 886 int wait_cnt = 120; 887 888 while (wait_cnt--) { 889 if (atomic_read(&qedf->num_offloads)) 890 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 891 "Waiting for all uploads to complete num_offloads = 0x%x.\n", 892 atomic_read(&qedf->num_offloads)); 893 else 894 return true; 895 msleep(500); 896 } 897 898 rcu_read_lock(); 899 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 900 if (test_bit(QEDF_RPORT_SESSION_READY, 901 &fcport->flags)) { 902 if (fcport->rdata) 903 QEDF_ERR(&qedf->dbg_ctx, 904 "Waiting for fcport %p portid=%06x.\n", 905 fcport, fcport->rdata->ids.port_id); 906 } else { 907 QEDF_ERR(&qedf->dbg_ctx, 908 "Waiting for fcport %p.\n", fcport); 909 } 910 } 911 912 rcu_read_unlock(); 913 return false; 914 } 915 916 /* Performs soft reset of qedf_ctx by simulating a link down/up */ 917 void qedf_ctx_soft_reset(struct fc_lport *lport) 918 { 919 struct qedf_ctx *qedf; 920 struct qed_link_output if_link; 921 922 qedf = lport_priv(lport); 923 924 if (lport->vport) { 925 clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags); 926 printk_ratelimited("Cannot issue host reset on NPIV port.\n"); 927 return; 928 } 929 930 qedf->flogi_pending = 0; 931 /* For host reset, essentially do a soft link up/down */ 932 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 933 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 934 "Queuing link down work.\n"); 935 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 936 0); 937 938 if (qedf_wait_for_upload(qedf) == false) { 939 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 940 WARN_ON(atomic_read(&qedf->num_offloads)); 941 } 942 943 /* Before setting link up query physical link state */ 944 qed_ops->common->get_link(qedf->cdev, &if_link); 945 /* Bail if the physical link is not up */ 946 if (!if_link.link_up) { 947 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 948 "Physical link is not up.\n"); 949 clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags); 950 return; 951 } 952 /* Flush and wait to make sure link down is processed */ 953 flush_delayed_work(&qedf->link_update); 954 msleep(500); 955 956 atomic_set(&qedf->link_state, QEDF_LINK_UP); 957 qedf->vlan_id = 0; 958 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 959 "Queue link up work.\n"); 960 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 961 0); 962 clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags); 963 } 964 965 /* Reset the host by gracefully logging out and then logging back in */ 966 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd) 967 { 968 struct fc_lport *lport; 969 struct qedf_ctx *qedf; 970 971 lport = shost_priv(sc_cmd->device->host); 972 qedf = lport_priv(lport); 973 974 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN || 975 test_bit(QEDF_UNLOADING, &qedf->flags)) 976 return FAILED; 977 978 QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued..."); 979 980 qedf_ctx_soft_reset(lport); 981 982 return SUCCESS; 983 } 984 985 static int qedf_slave_configure(struct scsi_device *sdev) 986 { 987 if (qedf_queue_depth) { 988 scsi_change_queue_depth(sdev, qedf_queue_depth); 989 } 990 991 return 0; 992 } 993 994 static const struct scsi_host_template qedf_host_template = { 995 .module = THIS_MODULE, 996 .name = QEDF_MODULE_NAME, 997 .this_id = -1, 998 .cmd_per_lun = 32, 999 .max_sectors = 0xffff, 1000 .queuecommand = qedf_queuecommand, 1001 .shost_groups = qedf_host_groups, 1002 .eh_abort_handler = qedf_eh_abort, 1003 .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */ 1004 .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */ 1005 .eh_host_reset_handler = qedf_eh_host_reset, 1006 .slave_configure = qedf_slave_configure, 1007 .dma_boundary = QED_HW_DMA_BOUNDARY, 1008 .sg_tablesize = QEDF_MAX_BDS_PER_CMD, 1009 .can_queue = FCOE_PARAMS_NUM_TASKS, 1010 .change_queue_depth = scsi_change_queue_depth, 1011 .cmd_size = sizeof(struct qedf_cmd_priv), 1012 }; 1013 1014 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen) 1015 { 1016 int rc; 1017 1018 spin_lock(&qedf_global_lock); 1019 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global); 1020 spin_unlock(&qedf_global_lock); 1021 1022 return rc; 1023 } 1024 1025 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id) 1026 { 1027 struct qedf_rport *fcport; 1028 struct fc_rport_priv *rdata; 1029 1030 rcu_read_lock(); 1031 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 1032 rdata = fcport->rdata; 1033 if (rdata == NULL) 1034 continue; 1035 if (rdata->ids.port_id == port_id) { 1036 rcu_read_unlock(); 1037 return fcport; 1038 } 1039 } 1040 rcu_read_unlock(); 1041 1042 /* Return NULL to caller to let them know fcport was not found */ 1043 return NULL; 1044 } 1045 1046 /* Transmits an ELS frame over an offloaded session */ 1047 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp) 1048 { 1049 struct fc_frame_header *fh; 1050 int rc = 0; 1051 1052 fh = fc_frame_header_get(fp); 1053 if ((fh->fh_type == FC_TYPE_ELS) && 1054 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 1055 switch (fc_frame_payload_op(fp)) { 1056 case ELS_ADISC: 1057 qedf_send_adisc(fcport, fp); 1058 rc = 1; 1059 break; 1060 } 1061 } 1062 1063 return rc; 1064 } 1065 1066 /* 1067 * qedf_xmit - qedf FCoE frame transmit function 1068 */ 1069 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp) 1070 { 1071 struct fc_lport *base_lport; 1072 struct qedf_ctx *qedf; 1073 struct ethhdr *eh; 1074 struct fcoe_crc_eof *cp; 1075 struct sk_buff *skb; 1076 struct fc_frame_header *fh; 1077 struct fcoe_hdr *hp; 1078 u8 sof, eof; 1079 u32 crc; 1080 unsigned int hlen, tlen, elen; 1081 int wlen; 1082 struct fc_lport *tmp_lport; 1083 struct fc_lport *vn_port = NULL; 1084 struct qedf_rport *fcport; 1085 int rc; 1086 u16 vlan_tci = 0; 1087 1088 qedf = (struct qedf_ctx *)lport_priv(lport); 1089 1090 fh = fc_frame_header_get(fp); 1091 skb = fp_skb(fp); 1092 1093 /* Filter out traffic to other NPIV ports on the same host */ 1094 if (lport->vport) 1095 base_lport = shost_priv(vport_to_shost(lport->vport)); 1096 else 1097 base_lport = lport; 1098 1099 /* Flag if the destination is the base port */ 1100 if (base_lport->port_id == ntoh24(fh->fh_d_id)) { 1101 vn_port = base_lport; 1102 } else { 1103 /* Got through the list of vports attached to the base_lport 1104 * and see if we have a match with the destination address. 1105 */ 1106 list_for_each_entry(tmp_lport, &base_lport->vports, list) { 1107 if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) { 1108 vn_port = tmp_lport; 1109 break; 1110 } 1111 } 1112 } 1113 if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) { 1114 struct fc_rport_priv *rdata = NULL; 1115 1116 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 1117 "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id)); 1118 kfree_skb(skb); 1119 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id)); 1120 if (rdata) { 1121 rdata->retries = lport->max_rport_retry_count; 1122 kref_put(&rdata->kref, fc_rport_destroy); 1123 } 1124 return -EINVAL; 1125 } 1126 /* End NPIV filtering */ 1127 1128 if (!qedf->ctlr.sel_fcf) { 1129 kfree_skb(skb); 1130 return 0; 1131 } 1132 1133 if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) { 1134 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n"); 1135 kfree_skb(skb); 1136 return 0; 1137 } 1138 1139 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 1140 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n"); 1141 kfree_skb(skb); 1142 return 0; 1143 } 1144 1145 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 1146 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb)) 1147 return 0; 1148 } 1149 1150 /* Check to see if this needs to be sent on an offloaded session */ 1151 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 1152 1153 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1154 rc = qedf_xmit_l2_frame(fcport, fp); 1155 /* 1156 * If the frame was successfully sent over the middle path 1157 * then do not try to also send it over the LL2 path 1158 */ 1159 if (rc) 1160 return 0; 1161 } 1162 1163 sof = fr_sof(fp); 1164 eof = fr_eof(fp); 1165 1166 elen = sizeof(struct ethhdr); 1167 hlen = sizeof(struct fcoe_hdr); 1168 tlen = sizeof(struct fcoe_crc_eof); 1169 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; 1170 1171 skb->ip_summed = CHECKSUM_NONE; 1172 crc = fcoe_fc_crc(fp); 1173 1174 /* copy port crc and eof to the skb buff */ 1175 if (skb_is_nonlinear(skb)) { 1176 skb_frag_t *frag; 1177 1178 if (qedf_get_paged_crc_eof(skb, tlen)) { 1179 kfree_skb(skb); 1180 return -ENOMEM; 1181 } 1182 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; 1183 cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag); 1184 } else { 1185 cp = skb_put(skb, tlen); 1186 } 1187 1188 memset(cp, 0, sizeof(*cp)); 1189 cp->fcoe_eof = eof; 1190 cp->fcoe_crc32 = cpu_to_le32(~crc); 1191 if (skb_is_nonlinear(skb)) { 1192 kunmap_atomic(cp); 1193 cp = NULL; 1194 } 1195 1196 1197 /* adjust skb network/transport offsets to match mac/fcoe/port */ 1198 skb_push(skb, elen + hlen); 1199 skb_reset_mac_header(skb); 1200 skb_reset_network_header(skb); 1201 skb->mac_len = elen; 1202 skb->protocol = htons(ETH_P_FCOE); 1203 1204 /* 1205 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN 1206 * for FIP/FCoE traffic. 1207 */ 1208 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id); 1209 1210 /* fill up mac and fcoe headers */ 1211 eh = eth_hdr(skb); 1212 eh->h_proto = htons(ETH_P_FCOE); 1213 if (qedf->ctlr.map_dest) 1214 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); 1215 else 1216 /* insert GW address */ 1217 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr); 1218 1219 /* Set the source MAC address */ 1220 ether_addr_copy(eh->h_source, qedf->data_src_addr); 1221 1222 hp = (struct fcoe_hdr *)(eh + 1); 1223 memset(hp, 0, sizeof(*hp)); 1224 if (FC_FCOE_VER) 1225 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); 1226 hp->fcoe_sof = sof; 1227 1228 /*update tx stats */ 1229 this_cpu_inc(lport->stats->TxFrames); 1230 this_cpu_add(lport->stats->TxWords, wlen); 1231 1232 /* Get VLAN ID from skb for printing purposes */ 1233 __vlan_hwaccel_get_tag(skb, &vlan_tci); 1234 1235 /* send down to lld */ 1236 fr_dev(fp) = lport; 1237 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: " 1238 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n", 1239 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type, 1240 vlan_tci); 1241 if (qedf_dump_frames) 1242 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 1243 1, skb->data, skb->len, false); 1244 rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0); 1245 if (rc) { 1246 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc); 1247 kfree_skb(skb); 1248 return rc; 1249 } 1250 1251 return 0; 1252 } 1253 1254 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1255 { 1256 int rval = 0; 1257 u32 *pbl; 1258 dma_addr_t page; 1259 int num_pages; 1260 1261 /* Calculate appropriate queue and PBL sizes */ 1262 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 1263 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE); 1264 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) * 1265 sizeof(void *); 1266 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE; 1267 1268 fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1269 &fcport->sq_dma, GFP_KERNEL); 1270 if (!fcport->sq) { 1271 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n"); 1272 rval = 1; 1273 goto out; 1274 } 1275 1276 fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 1277 fcport->sq_pbl_size, 1278 &fcport->sq_pbl_dma, GFP_KERNEL); 1279 if (!fcport->sq_pbl) { 1280 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n"); 1281 rval = 1; 1282 goto out_free_sq; 1283 } 1284 1285 /* Create PBL */ 1286 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE; 1287 page = fcport->sq_dma; 1288 pbl = (u32 *)fcport->sq_pbl; 1289 1290 while (num_pages--) { 1291 *pbl = U64_LO(page); 1292 pbl++; 1293 *pbl = U64_HI(page); 1294 pbl++; 1295 page += QEDF_PAGE_SIZE; 1296 } 1297 1298 return rval; 1299 1300 out_free_sq: 1301 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq, 1302 fcport->sq_dma); 1303 out: 1304 return rval; 1305 } 1306 1307 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1308 { 1309 if (fcport->sq_pbl) 1310 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size, 1311 fcport->sq_pbl, fcport->sq_pbl_dma); 1312 if (fcport->sq) 1313 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1314 fcport->sq, fcport->sq_dma); 1315 } 1316 1317 static int qedf_offload_connection(struct qedf_ctx *qedf, 1318 struct qedf_rport *fcport) 1319 { 1320 struct qed_fcoe_params_offload conn_info; 1321 u32 port_id; 1322 int rval; 1323 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe)); 1324 1325 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection " 1326 "portid=%06x.\n", fcport->rdata->ids.port_id); 1327 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle, 1328 &fcport->fw_cid, &fcport->p_doorbell); 1329 if (rval) { 1330 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection " 1331 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1332 rval = 1; /* For some reason qed returns 0 on failure here */ 1333 goto out; 1334 } 1335 1336 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x " 1337 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id, 1338 fcport->fw_cid, fcport->handle); 1339 1340 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload)); 1341 1342 /* Fill in the offload connection info */ 1343 conn_info.sq_pbl_addr = fcport->sq_pbl_dma; 1344 1345 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl); 1346 conn_info.sq_next_page_addr = 1347 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8)); 1348 1349 /* Need to use our FCoE MAC for the offload session */ 1350 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr); 1351 1352 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr); 1353 1354 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size; 1355 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov; 1356 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */ 1357 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size; 1358 1359 /* Set VLAN data */ 1360 conn_info.vlan_tag = qedf->vlan_id << 1361 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT; 1362 conn_info.vlan_tag |= 1363 qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT; 1364 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK << 1365 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT); 1366 1367 /* Set host port source id */ 1368 port_id = fc_host_port_id(qedf->lport->host); 1369 fcport->sid = port_id; 1370 conn_info.s_id.addr_hi = (port_id & 0x000000FF); 1371 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1372 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1373 1374 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq; 1375 1376 /* Set remote port destination id */ 1377 port_id = fcport->rdata->rport->port_id; 1378 conn_info.d_id.addr_hi = (port_id & 0x000000FF); 1379 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1380 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1381 1382 conn_info.def_q_idx = 0; /* Default index for send queue? */ 1383 1384 /* Set FC-TAPE specific flags if needed */ 1385 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) { 1386 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, 1387 "Enable CONF, REC for portid=%06x.\n", 1388 fcport->rdata->ids.port_id); 1389 conn_info.flags |= 1 << 1390 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT; 1391 conn_info.flags |= 1392 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) << 1393 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT; 1394 } 1395 1396 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info); 1397 if (rval) { 1398 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection " 1399 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1400 goto out_free_conn; 1401 } else 1402 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload " 1403 "succeeded portid=%06x total_sqe=%d.\n", 1404 fcport->rdata->ids.port_id, total_sqe); 1405 1406 spin_lock_init(&fcport->rport_lock); 1407 atomic_set(&fcport->free_sqes, total_sqe); 1408 return 0; 1409 out_free_conn: 1410 qed_ops->release_conn(qedf->cdev, fcport->handle); 1411 out: 1412 return rval; 1413 } 1414 1415 #define QEDF_TERM_BUFF_SIZE 10 1416 static void qedf_upload_connection(struct qedf_ctx *qedf, 1417 struct qedf_rport *fcport) 1418 { 1419 void *term_params; 1420 dma_addr_t term_params_dma; 1421 1422 /* Term params needs to be a DMA coherent buffer as qed shared the 1423 * physical DMA address with the firmware. The buffer may be used in 1424 * the receive path so we may eventually have to move this. 1425 */ 1426 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, 1427 &term_params_dma, GFP_KERNEL); 1428 if (!term_params) 1429 return; 1430 1431 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection " 1432 "port_id=%06x.\n", fcport->rdata->ids.port_id); 1433 1434 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma); 1435 qed_ops->release_conn(qedf->cdev, fcport->handle); 1436 1437 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params, 1438 term_params_dma); 1439 } 1440 1441 static void qedf_cleanup_fcport(struct qedf_ctx *qedf, 1442 struct qedf_rport *fcport) 1443 { 1444 struct fc_rport_priv *rdata = fcport->rdata; 1445 1446 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n", 1447 fcport->rdata->ids.port_id); 1448 1449 /* Flush any remaining i/o's before we upload the connection */ 1450 qedf_flush_active_ios(fcport, -1); 1451 1452 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) 1453 qedf_upload_connection(qedf, fcport); 1454 qedf_free_sq(qedf, fcport); 1455 fcport->rdata = NULL; 1456 fcport->qedf = NULL; 1457 kref_put(&rdata->kref, fc_rport_destroy); 1458 } 1459 1460 /* 1461 * This event_callback is called after successful completion of libfc 1462 * initiated target login. qedf can proceed with initiating the session 1463 * establishment. 1464 */ 1465 static void qedf_rport_event_handler(struct fc_lport *lport, 1466 struct fc_rport_priv *rdata, 1467 enum fc_rport_event event) 1468 { 1469 struct qedf_ctx *qedf = lport_priv(lport); 1470 struct fc_rport *rport = rdata->rport; 1471 struct fc_rport_libfc_priv *rp; 1472 struct qedf_rport *fcport; 1473 u32 port_id; 1474 int rval; 1475 unsigned long flags; 1476 1477 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, " 1478 "port_id = 0x%x\n", event, rdata->ids.port_id); 1479 1480 switch (event) { 1481 case RPORT_EV_READY: 1482 if (!rport) { 1483 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n"); 1484 break; 1485 } 1486 1487 rp = rport->dd_data; 1488 fcport = (struct qedf_rport *)&rp[1]; 1489 fcport->qedf = qedf; 1490 1491 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) { 1492 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading " 1493 "portid=0x%x as max number of offloaded sessions " 1494 "reached.\n", rdata->ids.port_id); 1495 return; 1496 } 1497 1498 /* 1499 * Don't try to offload the session again. Can happen when we 1500 * get an ADISC 1501 */ 1502 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1503 QEDF_WARN(&(qedf->dbg_ctx), "Session already " 1504 "offloaded, portid=0x%x.\n", 1505 rdata->ids.port_id); 1506 return; 1507 } 1508 1509 if (rport->port_id == FC_FID_DIR_SERV) { 1510 /* 1511 * qedf_rport structure doesn't exist for 1512 * directory server. 1513 * We should not come here, as lport will 1514 * take care of fabric login 1515 */ 1516 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not " 1517 "exist for dir server port_id=%x\n", 1518 rdata->ids.port_id); 1519 break; 1520 } 1521 1522 if (rdata->spp_type != FC_TYPE_FCP) { 1523 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1524 "Not offloading since spp type isn't FCP\n"); 1525 break; 1526 } 1527 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1528 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1529 "Not FCP target so not offloading\n"); 1530 break; 1531 } 1532 1533 /* Initial reference held on entry, so this can't fail */ 1534 kref_get(&rdata->kref); 1535 fcport->rdata = rdata; 1536 fcport->rport = rport; 1537 1538 rval = qedf_alloc_sq(qedf, fcport); 1539 if (rval) { 1540 qedf_cleanup_fcport(qedf, fcport); 1541 break; 1542 } 1543 1544 /* Set device type */ 1545 if (rdata->flags & FC_RP_FLAGS_RETRY && 1546 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET && 1547 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) { 1548 fcport->dev_type = QEDF_RPORT_TYPE_TAPE; 1549 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1550 "portid=%06x is a TAPE device.\n", 1551 rdata->ids.port_id); 1552 } else { 1553 fcport->dev_type = QEDF_RPORT_TYPE_DISK; 1554 } 1555 1556 rval = qedf_offload_connection(qedf, fcport); 1557 if (rval) { 1558 qedf_cleanup_fcport(qedf, fcport); 1559 break; 1560 } 1561 1562 /* Add fcport to list of qedf_ctx list of offloaded ports */ 1563 spin_lock_irqsave(&qedf->hba_lock, flags); 1564 list_add_rcu(&fcport->peers, &qedf->fcports); 1565 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1566 1567 /* 1568 * Set the session ready bit to let everyone know that this 1569 * connection is ready for I/O 1570 */ 1571 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags); 1572 atomic_inc(&qedf->num_offloads); 1573 1574 break; 1575 case RPORT_EV_LOGO: 1576 case RPORT_EV_FAILED: 1577 case RPORT_EV_STOP: 1578 port_id = rdata->ids.port_id; 1579 if (port_id == FC_FID_DIR_SERV) 1580 break; 1581 1582 if (rdata->spp_type != FC_TYPE_FCP) { 1583 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1584 "No action since spp type isn't FCP\n"); 1585 break; 1586 } 1587 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1588 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1589 "Not FCP target so no action\n"); 1590 break; 1591 } 1592 1593 if (!rport) { 1594 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1595 "port_id=%x - rport notcreated Yet!!\n", port_id); 1596 break; 1597 } 1598 rp = rport->dd_data; 1599 /* 1600 * Perform session upload. Note that rdata->peers is already 1601 * removed from disc->rports list before we get this event. 1602 */ 1603 fcport = (struct qedf_rport *)&rp[1]; 1604 1605 spin_lock_irqsave(&fcport->rport_lock, flags); 1606 /* Only free this fcport if it is offloaded already */ 1607 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) && 1608 !test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1609 &fcport->flags)) { 1610 set_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1611 &fcport->flags); 1612 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1613 qedf_cleanup_fcport(qedf, fcport); 1614 /* 1615 * Remove fcport to list of qedf_ctx list of offloaded 1616 * ports 1617 */ 1618 spin_lock_irqsave(&qedf->hba_lock, flags); 1619 list_del_rcu(&fcport->peers); 1620 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1621 1622 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1623 &fcport->flags); 1624 atomic_dec(&qedf->num_offloads); 1625 } else { 1626 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1627 } 1628 break; 1629 1630 case RPORT_EV_NONE: 1631 break; 1632 } 1633 } 1634 1635 static void qedf_abort_io(struct fc_lport *lport) 1636 { 1637 /* NO-OP but need to fill in the template */ 1638 } 1639 1640 static void qedf_fcp_cleanup(struct fc_lport *lport) 1641 { 1642 /* 1643 * NO-OP but need to fill in template to prevent a NULL 1644 * function pointer dereference during link down. I/Os 1645 * will be flushed when port is uploaded. 1646 */ 1647 } 1648 1649 static struct libfc_function_template qedf_lport_template = { 1650 .frame_send = qedf_xmit, 1651 .fcp_abort_io = qedf_abort_io, 1652 .fcp_cleanup = qedf_fcp_cleanup, 1653 .rport_event_callback = qedf_rport_event_handler, 1654 .elsct_send = qedf_elsct_send, 1655 }; 1656 1657 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf) 1658 { 1659 fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO); 1660 1661 qedf->ctlr.send = qedf_fip_send; 1662 qedf->ctlr.get_src_addr = qedf_get_src_mac; 1663 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac); 1664 } 1665 1666 static void qedf_setup_fdmi(struct qedf_ctx *qedf) 1667 { 1668 struct fc_lport *lport = qedf->lport; 1669 u8 buf[8]; 1670 int pos; 1671 uint32_t i; 1672 1673 /* 1674 * fdmi_enabled needs to be set for libfc 1675 * to execute FDMI registration 1676 */ 1677 lport->fdmi_enabled = 1; 1678 1679 /* 1680 * Setup the necessary fc_host attributes to that will be used to fill 1681 * in the FDMI information. 1682 */ 1683 1684 /* Get the PCI-e Device Serial Number Capability */ 1685 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN); 1686 if (pos) { 1687 pos += 4; 1688 for (i = 0; i < 8; i++) 1689 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]); 1690 1691 snprintf(fc_host_serial_number(lport->host), 1692 FC_SERIAL_NUMBER_SIZE, 1693 "%02X%02X%02X%02X%02X%02X%02X%02X", 1694 buf[7], buf[6], buf[5], buf[4], 1695 buf[3], buf[2], buf[1], buf[0]); 1696 } else 1697 snprintf(fc_host_serial_number(lport->host), 1698 FC_SERIAL_NUMBER_SIZE, "Unknown"); 1699 1700 snprintf(fc_host_manufacturer(lport->host), 1701 FC_SERIAL_NUMBER_SIZE, "%s", "Marvell Semiconductor Inc."); 1702 1703 if (qedf->pdev->device == QL45xxx) { 1704 snprintf(fc_host_model(lport->host), 1705 FC_SYMBOLIC_NAME_SIZE, "%s", "QL45xxx"); 1706 1707 snprintf(fc_host_model_description(lport->host), 1708 FC_SYMBOLIC_NAME_SIZE, "%s", 1709 "Marvell FastLinQ QL45xxx FCoE Adapter"); 1710 } 1711 1712 if (qedf->pdev->device == QL41xxx) { 1713 snprintf(fc_host_model(lport->host), 1714 FC_SYMBOLIC_NAME_SIZE, "%s", "QL41xxx"); 1715 1716 snprintf(fc_host_model_description(lport->host), 1717 FC_SYMBOLIC_NAME_SIZE, "%s", 1718 "Marvell FastLinQ QL41xxx FCoE Adapter"); 1719 } 1720 1721 snprintf(fc_host_hardware_version(lport->host), 1722 FC_VERSION_STRING_SIZE, "Rev %d", qedf->pdev->revision); 1723 1724 snprintf(fc_host_driver_version(lport->host), 1725 FC_VERSION_STRING_SIZE, "%s", QEDF_VERSION); 1726 1727 snprintf(fc_host_firmware_version(lport->host), 1728 FC_VERSION_STRING_SIZE, "%d.%d.%d.%d", 1729 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 1730 FW_ENGINEERING_VERSION); 1731 1732 snprintf(fc_host_vendor_identifier(lport->host), 1733 FC_VENDOR_IDENTIFIER, "%s", "Marvell"); 1734 1735 } 1736 1737 static int qedf_lport_setup(struct qedf_ctx *qedf) 1738 { 1739 struct fc_lport *lport = qedf->lport; 1740 1741 lport->link_up = 0; 1742 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1743 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1744 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1745 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1746 lport->boot_time = jiffies; 1747 lport->e_d_tov = 2 * 1000; 1748 lport->r_a_tov = 10 * 1000; 1749 1750 /* Set NPIV support */ 1751 lport->does_npiv = 1; 1752 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV; 1753 1754 fc_set_wwnn(lport, qedf->wwnn); 1755 fc_set_wwpn(lport, qedf->wwpn); 1756 1757 if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) { 1758 QEDF_ERR(&qedf->dbg_ctx, 1759 "fcoe_libfc_config failed.\n"); 1760 return -ENOMEM; 1761 } 1762 1763 /* Allocate the exchange manager */ 1764 fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS, 1765 0xfffe, NULL); 1766 1767 if (fc_lport_init_stats(lport)) 1768 return -ENOMEM; 1769 1770 /* Finish lport config */ 1771 fc_lport_config(lport); 1772 1773 /* Set max frame size */ 1774 fc_set_mfs(lport, QEDF_MFS); 1775 fc_host_maxframe_size(lport->host) = lport->mfs; 1776 1777 /* Set default dev_loss_tmo based on module parameter */ 1778 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo; 1779 1780 /* Set symbolic node name */ 1781 if (qedf->pdev->device == QL45xxx) 1782 snprintf(fc_host_symbolic_name(lport->host), 256, 1783 "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION); 1784 1785 if (qedf->pdev->device == QL41xxx) 1786 snprintf(fc_host_symbolic_name(lport->host), 256, 1787 "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION); 1788 1789 qedf_setup_fdmi(qedf); 1790 1791 return 0; 1792 } 1793 1794 /* 1795 * NPIV functions 1796 */ 1797 1798 static int qedf_vport_libfc_config(struct fc_vport *vport, 1799 struct fc_lport *lport) 1800 { 1801 lport->link_up = 0; 1802 lport->qfull = 0; 1803 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1804 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1805 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1806 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1807 lport->boot_time = jiffies; 1808 lport->e_d_tov = 2 * 1000; 1809 lport->r_a_tov = 10 * 1000; 1810 lport->does_npiv = 1; /* Temporary until we add NPIV support */ 1811 1812 /* Allocate stats for vport */ 1813 if (fc_lport_init_stats(lport)) 1814 return -ENOMEM; 1815 1816 /* Finish lport config */ 1817 fc_lport_config(lport); 1818 1819 /* offload related configuration */ 1820 lport->crc_offload = 0; 1821 lport->seq_offload = 0; 1822 lport->lro_enabled = 0; 1823 lport->lro_xid = 0; 1824 lport->lso_max = 0; 1825 1826 return 0; 1827 } 1828 1829 static int qedf_vport_create(struct fc_vport *vport, bool disabled) 1830 { 1831 struct Scsi_Host *shost = vport_to_shost(vport); 1832 struct fc_lport *n_port = shost_priv(shost); 1833 struct fc_lport *vn_port; 1834 struct qedf_ctx *base_qedf = lport_priv(n_port); 1835 struct qedf_ctx *vport_qedf; 1836 1837 char buf[32]; 1838 int rc = 0; 1839 1840 rc = fcoe_validate_vport_create(vport); 1841 if (rc) { 1842 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1843 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, " 1844 "WWPN (0x%s) already exists.\n", buf); 1845 return rc; 1846 } 1847 1848 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) { 1849 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport " 1850 "because link is not up.\n"); 1851 return -EIO; 1852 } 1853 1854 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx)); 1855 if (!vn_port) { 1856 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport " 1857 "for vport.\n"); 1858 return -ENOMEM; 1859 } 1860 1861 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1862 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n", 1863 buf); 1864 1865 /* Copy some fields from base_qedf */ 1866 vport_qedf = lport_priv(vn_port); 1867 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx)); 1868 1869 /* Set qedf data specific to this vport */ 1870 vport_qedf->lport = vn_port; 1871 /* Use same hba_lock as base_qedf */ 1872 vport_qedf->hba_lock = base_qedf->hba_lock; 1873 vport_qedf->pdev = base_qedf->pdev; 1874 vport_qedf->cmd_mgr = base_qedf->cmd_mgr; 1875 init_completion(&vport_qedf->flogi_compl); 1876 INIT_LIST_HEAD(&vport_qedf->fcports); 1877 INIT_DELAYED_WORK(&vport_qedf->stag_work, qedf_stag_change_work); 1878 1879 rc = qedf_vport_libfc_config(vport, vn_port); 1880 if (rc) { 1881 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory " 1882 "for lport stats.\n"); 1883 goto err; 1884 } 1885 1886 fc_set_wwnn(vn_port, vport->node_name); 1887 fc_set_wwpn(vn_port, vport->port_name); 1888 vport_qedf->wwnn = vn_port->wwnn; 1889 vport_qedf->wwpn = vn_port->wwpn; 1890 1891 vn_port->host->transportt = qedf_fc_vport_transport_template; 1892 vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS; 1893 vn_port->host->max_lun = qedf_max_lun; 1894 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD; 1895 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN; 1896 vn_port->host->max_id = QEDF_MAX_SESSIONS; 1897 1898 rc = scsi_add_host(vn_port->host, &vport->dev); 1899 if (rc) { 1900 QEDF_WARN(&base_qedf->dbg_ctx, 1901 "Error adding Scsi_Host rc=0x%x.\n", rc); 1902 goto err; 1903 } 1904 1905 /* Set default dev_loss_tmo based on module parameter */ 1906 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo; 1907 1908 /* Init libfc stuffs */ 1909 memcpy(&vn_port->tt, &qedf_lport_template, 1910 sizeof(qedf_lport_template)); 1911 fc_exch_init(vn_port); 1912 fc_elsct_init(vn_port); 1913 fc_lport_init(vn_port); 1914 fc_disc_init(vn_port); 1915 fc_disc_config(vn_port, vn_port); 1916 1917 1918 /* Allocate the exchange manager */ 1919 shost = vport_to_shost(vport); 1920 n_port = shost_priv(shost); 1921 fc_exch_mgr_list_clone(n_port, vn_port); 1922 1923 /* Set max frame size */ 1924 fc_set_mfs(vn_port, QEDF_MFS); 1925 1926 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN; 1927 1928 if (disabled) { 1929 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1930 } else { 1931 vn_port->boot_time = jiffies; 1932 fc_fabric_login(vn_port); 1933 fc_vport_setlink(vn_port); 1934 } 1935 1936 /* Set symbolic node name */ 1937 if (base_qedf->pdev->device == QL45xxx) 1938 snprintf(fc_host_symbolic_name(vn_port->host), 256, 1939 "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION); 1940 1941 if (base_qedf->pdev->device == QL41xxx) 1942 snprintf(fc_host_symbolic_name(vn_port->host), 256, 1943 "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION); 1944 1945 /* Set supported speed */ 1946 fc_host_supported_speeds(vn_port->host) = n_port->link_supported_speeds; 1947 1948 /* Set speed */ 1949 vn_port->link_speed = n_port->link_speed; 1950 1951 /* Set port type */ 1952 fc_host_port_type(vn_port->host) = FC_PORTTYPE_NPIV; 1953 1954 /* Set maxframe size */ 1955 fc_host_maxframe_size(vn_port->host) = n_port->mfs; 1956 1957 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n", 1958 vn_port); 1959 1960 /* Set up debug context for vport */ 1961 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no; 1962 vport_qedf->dbg_ctx.pdev = base_qedf->pdev; 1963 1964 return 0; 1965 1966 err: 1967 scsi_host_put(vn_port->host); 1968 return rc; 1969 } 1970 1971 static int qedf_vport_destroy(struct fc_vport *vport) 1972 { 1973 struct Scsi_Host *shost = vport_to_shost(vport); 1974 struct fc_lport *n_port = shost_priv(shost); 1975 struct fc_lport *vn_port = vport->dd_data; 1976 struct qedf_ctx *qedf = lport_priv(vn_port); 1977 1978 if (!qedf) { 1979 QEDF_ERR(NULL, "qedf is NULL.\n"); 1980 goto out; 1981 } 1982 1983 /* Set unloading bit on vport qedf_ctx to prevent more I/O */ 1984 set_bit(QEDF_UNLOADING, &qedf->flags); 1985 1986 mutex_lock(&n_port->lp_mutex); 1987 list_del(&vn_port->list); 1988 mutex_unlock(&n_port->lp_mutex); 1989 1990 fc_fabric_logoff(vn_port); 1991 fc_lport_destroy(vn_port); 1992 1993 /* Detach from scsi-ml */ 1994 fc_remove_host(vn_port->host); 1995 scsi_remove_host(vn_port->host); 1996 1997 /* 1998 * Only try to release the exchange manager if the vn_port 1999 * configuration is complete. 2000 */ 2001 if (vn_port->state == LPORT_ST_READY) 2002 fc_exch_mgr_free(vn_port); 2003 2004 /* Free memory used by statistical counters */ 2005 fc_lport_free_stats(vn_port); 2006 2007 /* Release Scsi_Host */ 2008 scsi_host_put(vn_port->host); 2009 2010 out: 2011 return 0; 2012 } 2013 2014 static int qedf_vport_disable(struct fc_vport *vport, bool disable) 2015 { 2016 struct fc_lport *lport = vport->dd_data; 2017 2018 if (disable) { 2019 fc_vport_set_state(vport, FC_VPORT_DISABLED); 2020 fc_fabric_logoff(lport); 2021 } else { 2022 lport->boot_time = jiffies; 2023 fc_fabric_login(lport); 2024 fc_vport_setlink(lport); 2025 } 2026 return 0; 2027 } 2028 2029 /* 2030 * During removal we need to wait for all the vports associated with a port 2031 * to be destroyed so we avoid a race condition where libfc is still trying 2032 * to reap vports while the driver remove function has already reaped the 2033 * driver contexts associated with the physical port. 2034 */ 2035 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf) 2036 { 2037 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host); 2038 2039 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 2040 "Entered.\n"); 2041 while (fc_host->npiv_vports_inuse > 0) { 2042 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 2043 "Waiting for all vports to be reaped.\n"); 2044 msleep(1000); 2045 } 2046 } 2047 2048 /** 2049 * qedf_fcoe_reset - Resets the fcoe 2050 * 2051 * @shost: shost the reset is from 2052 * 2053 * Returns: always 0 2054 */ 2055 static int qedf_fcoe_reset(struct Scsi_Host *shost) 2056 { 2057 struct fc_lport *lport = shost_priv(shost); 2058 2059 qedf_ctx_soft_reset(lport); 2060 return 0; 2061 } 2062 2063 static void qedf_get_host_port_id(struct Scsi_Host *shost) 2064 { 2065 struct fc_lport *lport = shost_priv(shost); 2066 2067 fc_host_port_id(shost) = lport->port_id; 2068 } 2069 2070 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host 2071 *shost) 2072 { 2073 struct fc_host_statistics *qedf_stats; 2074 struct fc_lport *lport = shost_priv(shost); 2075 struct qedf_ctx *qedf = lport_priv(lport); 2076 struct qed_fcoe_stats *fw_fcoe_stats; 2077 2078 qedf_stats = fc_get_host_stats(shost); 2079 2080 /* We don't collect offload stats for specific NPIV ports */ 2081 if (lport->vport) 2082 goto out; 2083 2084 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL); 2085 if (!fw_fcoe_stats) { 2086 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for " 2087 "fw_fcoe_stats.\n"); 2088 goto out; 2089 } 2090 2091 mutex_lock(&qedf->stats_mutex); 2092 2093 /* Query firmware for offload stats */ 2094 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats); 2095 2096 /* 2097 * The expectation is that we add our offload stats to the stats 2098 * being maintained by libfc each time the fc_get_host_status callback 2099 * is invoked. The additions are not carried over for each call to 2100 * the fc_get_host_stats callback. 2101 */ 2102 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt + 2103 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt + 2104 fw_fcoe_stats->fcoe_tx_other_pkt_cnt; 2105 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt + 2106 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt + 2107 fw_fcoe_stats->fcoe_rx_other_pkt_cnt; 2108 qedf_stats->fcp_input_megabytes += 2109 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000); 2110 qedf_stats->fcp_output_megabytes += 2111 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000); 2112 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4; 2113 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4; 2114 qedf_stats->invalid_crc_count += 2115 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt; 2116 qedf_stats->dumped_frames = 2117 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 2118 qedf_stats->error_frames += 2119 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 2120 qedf_stats->fcp_input_requests += qedf->input_requests; 2121 qedf_stats->fcp_output_requests += qedf->output_requests; 2122 qedf_stats->fcp_control_requests += qedf->control_requests; 2123 qedf_stats->fcp_packet_aborts += qedf->packet_aborts; 2124 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures; 2125 2126 mutex_unlock(&qedf->stats_mutex); 2127 kfree(fw_fcoe_stats); 2128 out: 2129 return qedf_stats; 2130 } 2131 2132 static struct fc_function_template qedf_fc_transport_fn = { 2133 .show_host_node_name = 1, 2134 .show_host_port_name = 1, 2135 .show_host_supported_classes = 1, 2136 .show_host_supported_fc4s = 1, 2137 .show_host_active_fc4s = 1, 2138 .show_host_maxframe_size = 1, 2139 2140 .get_host_port_id = qedf_get_host_port_id, 2141 .show_host_port_id = 1, 2142 .show_host_supported_speeds = 1, 2143 .get_host_speed = fc_get_host_speed, 2144 .show_host_speed = 1, 2145 .show_host_port_type = 1, 2146 .get_host_port_state = fc_get_host_port_state, 2147 .show_host_port_state = 1, 2148 .show_host_symbolic_name = 1, 2149 2150 /* 2151 * Tell FC transport to allocate enough space to store the backpointer 2152 * for the associate qedf_rport struct. 2153 */ 2154 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2155 sizeof(struct qedf_rport)), 2156 .show_rport_maxframe_size = 1, 2157 .show_rport_supported_classes = 1, 2158 .show_host_fabric_name = 1, 2159 .show_starget_node_name = 1, 2160 .show_starget_port_name = 1, 2161 .show_starget_port_id = 1, 2162 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2163 .show_rport_dev_loss_tmo = 1, 2164 .get_fc_host_stats = qedf_fc_get_host_stats, 2165 .issue_fc_host_lip = qedf_fcoe_reset, 2166 .vport_create = qedf_vport_create, 2167 .vport_delete = qedf_vport_destroy, 2168 .vport_disable = qedf_vport_disable, 2169 .bsg_request = fc_lport_bsg_request, 2170 }; 2171 2172 static struct fc_function_template qedf_fc_vport_transport_fn = { 2173 .show_host_node_name = 1, 2174 .show_host_port_name = 1, 2175 .show_host_supported_classes = 1, 2176 .show_host_supported_fc4s = 1, 2177 .show_host_active_fc4s = 1, 2178 .show_host_maxframe_size = 1, 2179 .show_host_port_id = 1, 2180 .show_host_supported_speeds = 1, 2181 .get_host_speed = fc_get_host_speed, 2182 .show_host_speed = 1, 2183 .show_host_port_type = 1, 2184 .get_host_port_state = fc_get_host_port_state, 2185 .show_host_port_state = 1, 2186 .show_host_symbolic_name = 1, 2187 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2188 sizeof(struct qedf_rport)), 2189 .show_rport_maxframe_size = 1, 2190 .show_rport_supported_classes = 1, 2191 .show_host_fabric_name = 1, 2192 .show_starget_node_name = 1, 2193 .show_starget_port_name = 1, 2194 .show_starget_port_id = 1, 2195 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2196 .show_rport_dev_loss_tmo = 1, 2197 .get_fc_host_stats = fc_get_host_stats, 2198 .issue_fc_host_lip = qedf_fcoe_reset, 2199 .bsg_request = fc_lport_bsg_request, 2200 }; 2201 2202 static bool qedf_fp_has_work(struct qedf_fastpath *fp) 2203 { 2204 struct qedf_ctx *qedf = fp->qedf; 2205 struct global_queue *que; 2206 struct qed_sb_info *sb_info = fp->sb_info; 2207 struct status_block *sb = sb_info->sb_virt; 2208 u16 prod_idx; 2209 2210 /* Get the pointer to the global CQ this completion is on */ 2211 que = qedf->global_queues[fp->sb_id]; 2212 2213 /* Be sure all responses have been written to PI */ 2214 rmb(); 2215 2216 /* Get the current firmware producer index */ 2217 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2218 2219 return (que->cq_prod_idx != prod_idx); 2220 } 2221 2222 /* 2223 * Interrupt handler code. 2224 */ 2225 2226 /* Process completion queue and copy CQE contents for deferred processesing 2227 * 2228 * Return true if we should wake the I/O thread, false if not. 2229 */ 2230 static bool qedf_process_completions(struct qedf_fastpath *fp) 2231 { 2232 struct qedf_ctx *qedf = fp->qedf; 2233 struct qed_sb_info *sb_info = fp->sb_info; 2234 struct status_block *sb = sb_info->sb_virt; 2235 struct global_queue *que; 2236 u16 prod_idx; 2237 struct fcoe_cqe *cqe; 2238 struct qedf_io_work *io_work; 2239 unsigned int cpu; 2240 struct qedf_ioreq *io_req = NULL; 2241 u16 xid; 2242 u16 new_cqes; 2243 u32 comp_type; 2244 2245 /* Get the current firmware producer index */ 2246 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2247 2248 /* Get the pointer to the global CQ this completion is on */ 2249 que = qedf->global_queues[fp->sb_id]; 2250 2251 /* Calculate the amount of new elements since last processing */ 2252 new_cqes = (prod_idx >= que->cq_prod_idx) ? 2253 (prod_idx - que->cq_prod_idx) : 2254 0x10000 - que->cq_prod_idx + prod_idx; 2255 2256 /* Save producer index */ 2257 que->cq_prod_idx = prod_idx; 2258 2259 while (new_cqes) { 2260 fp->completions++; 2261 cqe = &que->cq[que->cq_cons_idx]; 2262 2263 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2264 FCOE_CQE_CQE_TYPE_MASK; 2265 2266 /* 2267 * Process unsolicited CQEs directly in the interrupt handler 2268 * sine we need the fastpath ID 2269 */ 2270 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) { 2271 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL, 2272 "Unsolicated CQE.\n"); 2273 qedf_process_unsol_compl(qedf, fp->sb_id, cqe); 2274 /* 2275 * Don't add a work list item. Increment consumer 2276 * consumer index and move on. 2277 */ 2278 goto inc_idx; 2279 } 2280 2281 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2282 io_req = &qedf->cmd_mgr->cmds[xid]; 2283 2284 /* 2285 * Figure out which percpu thread we should queue this I/O 2286 * on. 2287 */ 2288 if (!io_req) 2289 /* If there is not io_req associated with this CQE 2290 * just queue it on CPU 0 2291 */ 2292 cpu = 0; 2293 else { 2294 cpu = io_req->cpu; 2295 io_req->int_cpu = smp_processor_id(); 2296 } 2297 2298 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC); 2299 if (!io_work) { 2300 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate " 2301 "work for I/O completion.\n"); 2302 continue; 2303 } 2304 memset(io_work, 0, sizeof(struct qedf_io_work)); 2305 2306 INIT_WORK(&io_work->work, qedf_fp_io_handler); 2307 2308 /* Copy contents of CQE for deferred processing */ 2309 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe)); 2310 2311 io_work->qedf = fp->qedf; 2312 io_work->fp = NULL; /* Only used for unsolicited frames */ 2313 2314 queue_work_on(cpu, qedf_io_wq, &io_work->work); 2315 2316 inc_idx: 2317 que->cq_cons_idx++; 2318 if (que->cq_cons_idx == fp->cq_num_entries) 2319 que->cq_cons_idx = 0; 2320 new_cqes--; 2321 } 2322 2323 return true; 2324 } 2325 2326 2327 /* MSI-X fastpath handler code */ 2328 static irqreturn_t qedf_msix_handler(int irq, void *dev_id) 2329 { 2330 struct qedf_fastpath *fp = dev_id; 2331 2332 if (!fp) { 2333 QEDF_ERR(NULL, "fp is null.\n"); 2334 return IRQ_HANDLED; 2335 } 2336 if (!fp->sb_info) { 2337 QEDF_ERR(NULL, "fp->sb_info in null."); 2338 return IRQ_HANDLED; 2339 } 2340 2341 /* 2342 * Disable interrupts for this status block while we process new 2343 * completions 2344 */ 2345 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/); 2346 2347 while (1) { 2348 qedf_process_completions(fp); 2349 2350 if (qedf_fp_has_work(fp) == 0) { 2351 /* Update the sb information */ 2352 qed_sb_update_sb_idx(fp->sb_info); 2353 2354 /* Check for more work */ 2355 rmb(); 2356 2357 if (qedf_fp_has_work(fp) == 0) { 2358 /* Re-enable interrupts */ 2359 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 2360 return IRQ_HANDLED; 2361 } 2362 } 2363 } 2364 2365 /* Do we ever want to break out of above loop? */ 2366 return IRQ_HANDLED; 2367 } 2368 2369 /* simd handler for MSI/INTa */ 2370 static void qedf_simd_int_handler(void *cookie) 2371 { 2372 /* Cookie is qedf_ctx struct */ 2373 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2374 2375 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf); 2376 } 2377 2378 #define QEDF_SIMD_HANDLER_NUM 0 2379 static void qedf_sync_free_irqs(struct qedf_ctx *qedf) 2380 { 2381 int i; 2382 u16 vector_idx = 0; 2383 u32 vector; 2384 2385 if (qedf->int_info.msix_cnt) { 2386 for (i = 0; i < qedf->int_info.used_cnt; i++) { 2387 vector_idx = i * qedf->dev_info.common.num_hwfns + 2388 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2389 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2390 "Freeing IRQ #%d vector_idx=%d.\n", 2391 i, vector_idx); 2392 vector = qedf->int_info.msix[vector_idx].vector; 2393 synchronize_irq(vector); 2394 irq_set_affinity_hint(vector, NULL); 2395 irq_set_affinity_notifier(vector, NULL); 2396 free_irq(vector, &qedf->fp_array[i]); 2397 } 2398 } else 2399 qed_ops->common->simd_handler_clean(qedf->cdev, 2400 QEDF_SIMD_HANDLER_NUM); 2401 2402 qedf->int_info.used_cnt = 0; 2403 qed_ops->common->set_fp_int(qedf->cdev, 0); 2404 } 2405 2406 static int qedf_request_msix_irq(struct qedf_ctx *qedf) 2407 { 2408 int i, rc, cpu; 2409 u16 vector_idx = 0; 2410 u32 vector; 2411 2412 cpu = cpumask_first(cpu_online_mask); 2413 for (i = 0; i < qedf->num_queues; i++) { 2414 vector_idx = i * qedf->dev_info.common.num_hwfns + 2415 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2416 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2417 "Requesting IRQ #%d vector_idx=%d.\n", 2418 i, vector_idx); 2419 vector = qedf->int_info.msix[vector_idx].vector; 2420 rc = request_irq(vector, qedf_msix_handler, 0, "qedf", 2421 &qedf->fp_array[i]); 2422 2423 if (rc) { 2424 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n"); 2425 qedf_sync_free_irqs(qedf); 2426 return rc; 2427 } 2428 2429 qedf->int_info.used_cnt++; 2430 rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu)); 2431 cpu = cpumask_next(cpu, cpu_online_mask); 2432 } 2433 2434 return 0; 2435 } 2436 2437 static int qedf_setup_int(struct qedf_ctx *qedf) 2438 { 2439 int rc = 0; 2440 2441 /* 2442 * Learn interrupt configuration 2443 */ 2444 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus()); 2445 if (rc <= 0) 2446 return 0; 2447 2448 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info); 2449 if (rc) 2450 return 0; 2451 2452 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = " 2453 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt, 2454 num_online_cpus()); 2455 2456 if (qedf->int_info.msix_cnt) 2457 return qedf_request_msix_irq(qedf); 2458 2459 qed_ops->common->simd_handler_config(qedf->cdev, &qedf, 2460 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler); 2461 qedf->int_info.used_cnt = 1; 2462 2463 QEDF_ERR(&qedf->dbg_ctx, 2464 "Cannot load driver due to a lack of MSI-X vectors.\n"); 2465 return -EINVAL; 2466 } 2467 2468 /* Main function for libfc frame reception */ 2469 static void qedf_recv_frame(struct qedf_ctx *qedf, 2470 struct sk_buff *skb) 2471 { 2472 u32 fr_len; 2473 struct fc_lport *lport; 2474 struct fc_frame_header *fh; 2475 struct fcoe_crc_eof crc_eof; 2476 struct fc_frame *fp; 2477 u8 *mac = NULL; 2478 u8 *dest_mac = NULL; 2479 struct fcoe_hdr *hp; 2480 struct qedf_rport *fcport; 2481 struct fc_lport *vn_port; 2482 u32 f_ctl; 2483 2484 lport = qedf->lport; 2485 if (lport == NULL || lport->state == LPORT_ST_DISABLED) { 2486 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n"); 2487 kfree_skb(skb); 2488 return; 2489 } 2490 2491 if (skb_is_nonlinear(skb)) 2492 skb_linearize(skb); 2493 mac = eth_hdr(skb)->h_source; 2494 dest_mac = eth_hdr(skb)->h_dest; 2495 2496 /* Pull the header */ 2497 hp = (struct fcoe_hdr *)skb->data; 2498 fh = (struct fc_frame_header *) skb_transport_header(skb); 2499 skb_pull(skb, sizeof(struct fcoe_hdr)); 2500 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 2501 2502 fp = (struct fc_frame *)skb; 2503 fc_frame_init(fp); 2504 fr_dev(fp) = lport; 2505 fr_sof(fp) = hp->fcoe_sof; 2506 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 2507 QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n"); 2508 kfree_skb(skb); 2509 return; 2510 } 2511 fr_eof(fp) = crc_eof.fcoe_eof; 2512 fr_crc(fp) = crc_eof.fcoe_crc32; 2513 if (pskb_trim(skb, fr_len)) { 2514 QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n"); 2515 kfree_skb(skb); 2516 return; 2517 } 2518 2519 fh = fc_frame_header_get(fp); 2520 2521 /* 2522 * Invalid frame filters. 2523 */ 2524 2525 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 2526 fh->fh_type == FC_TYPE_FCP) { 2527 /* Drop FCP data. We dont this in L2 path */ 2528 kfree_skb(skb); 2529 return; 2530 } 2531 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 2532 fh->fh_type == FC_TYPE_ELS) { 2533 switch (fc_frame_payload_op(fp)) { 2534 case ELS_LOGO: 2535 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 2536 /* drop non-FIP LOGO */ 2537 kfree_skb(skb); 2538 return; 2539 } 2540 break; 2541 } 2542 } 2543 2544 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 2545 /* Drop incoming ABTS */ 2546 kfree_skb(skb); 2547 return; 2548 } 2549 2550 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { 2551 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2552 "FC frame d_id mismatch with MAC %pM.\n", dest_mac); 2553 kfree_skb(skb); 2554 return; 2555 } 2556 2557 if (qedf->ctlr.state) { 2558 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) { 2559 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2560 "Wrong source address: mac:%pM dest_addr:%pM.\n", 2561 mac, qedf->ctlr.dest_addr); 2562 kfree_skb(skb); 2563 return; 2564 } 2565 } 2566 2567 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 2568 2569 /* 2570 * If the destination ID from the frame header does not match what we 2571 * have on record for lport and the search for a NPIV port came up 2572 * empty then this is not addressed to our port so simply drop it. 2573 */ 2574 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { 2575 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2576 "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n", 2577 lport->port_id, ntoh24(fh->fh_d_id)); 2578 kfree_skb(skb); 2579 return; 2580 } 2581 2582 f_ctl = ntoh24(fh->fh_f_ctl); 2583 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) && 2584 (f_ctl & FC_FC_EX_CTX)) { 2585 /* Drop incoming ABTS response that has both SEQ/EX CTX set */ 2586 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2587 "Dropping ABTS response as both SEQ/EX CTX set.\n"); 2588 kfree_skb(skb); 2589 return; 2590 } 2591 2592 /* 2593 * If a connection is uploading, drop incoming FCoE frames as there 2594 * is a small window where we could try to return a frame while libfc 2595 * is trying to clean things up. 2596 */ 2597 2598 /* Get fcport associated with d_id if it exists */ 2599 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 2600 2601 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 2602 &fcport->flags)) { 2603 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2604 "Connection uploading, dropping fp=%p.\n", fp); 2605 kfree_skb(skb); 2606 return; 2607 } 2608 2609 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: " 2610 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp, 2611 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, 2612 fh->fh_type); 2613 if (qedf_dump_frames) 2614 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 2615 1, skb->data, skb->len, false); 2616 fc_exch_recv(lport, fp); 2617 } 2618 2619 static void qedf_ll2_process_skb(struct work_struct *work) 2620 { 2621 struct qedf_skb_work *skb_work = 2622 container_of(work, struct qedf_skb_work, work); 2623 struct qedf_ctx *qedf = skb_work->qedf; 2624 struct sk_buff *skb = skb_work->skb; 2625 struct ethhdr *eh; 2626 2627 if (!qedf) { 2628 QEDF_ERR(NULL, "qedf is NULL\n"); 2629 goto err_out; 2630 } 2631 2632 eh = (struct ethhdr *)skb->data; 2633 2634 /* Undo VLAN encapsulation */ 2635 if (eh->h_proto == htons(ETH_P_8021Q)) { 2636 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); 2637 eh = skb_pull(skb, VLAN_HLEN); 2638 skb_reset_mac_header(skb); 2639 } 2640 2641 /* 2642 * Process either a FIP frame or FCoE frame based on the 2643 * protocol value. If it's not either just drop the 2644 * frame. 2645 */ 2646 if (eh->h_proto == htons(ETH_P_FIP)) { 2647 qedf_fip_recv(qedf, skb); 2648 goto out; 2649 } else if (eh->h_proto == htons(ETH_P_FCOE)) { 2650 __skb_pull(skb, ETH_HLEN); 2651 qedf_recv_frame(qedf, skb); 2652 goto out; 2653 } else 2654 goto err_out; 2655 2656 err_out: 2657 kfree_skb(skb); 2658 out: 2659 kfree(skb_work); 2660 return; 2661 } 2662 2663 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb, 2664 u32 arg1, u32 arg2) 2665 { 2666 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2667 struct qedf_skb_work *skb_work; 2668 2669 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 2670 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2671 "Dropping frame as link state is down.\n"); 2672 kfree_skb(skb); 2673 return 0; 2674 } 2675 2676 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC); 2677 if (!skb_work) { 2678 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so " 2679 "dropping frame.\n"); 2680 kfree_skb(skb); 2681 return 0; 2682 } 2683 2684 INIT_WORK(&skb_work->work, qedf_ll2_process_skb); 2685 skb_work->skb = skb; 2686 skb_work->qedf = qedf; 2687 queue_work(qedf->ll2_recv_wq, &skb_work->work); 2688 2689 return 0; 2690 } 2691 2692 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = { 2693 .rx_cb = qedf_ll2_rx, 2694 .tx_cb = NULL, 2695 }; 2696 2697 /* Main thread to process I/O completions */ 2698 void qedf_fp_io_handler(struct work_struct *work) 2699 { 2700 struct qedf_io_work *io_work = 2701 container_of(work, struct qedf_io_work, work); 2702 u32 comp_type; 2703 2704 /* 2705 * Deferred part of unsolicited CQE sends 2706 * frame to libfc. 2707 */ 2708 comp_type = (io_work->cqe.cqe_data >> 2709 FCOE_CQE_CQE_TYPE_SHIFT) & 2710 FCOE_CQE_CQE_TYPE_MASK; 2711 if (comp_type == FCOE_UNSOLIC_CQE_TYPE && 2712 io_work->fp) 2713 fc_exch_recv(io_work->qedf->lport, io_work->fp); 2714 else 2715 qedf_process_cqe(io_work->qedf, &io_work->cqe); 2716 2717 kfree(io_work); 2718 } 2719 2720 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf, 2721 struct qed_sb_info *sb_info, u16 sb_id) 2722 { 2723 struct status_block *sb_virt; 2724 dma_addr_t sb_phys; 2725 int ret; 2726 2727 sb_virt = dma_alloc_coherent(&qedf->pdev->dev, 2728 sizeof(struct status_block), &sb_phys, GFP_KERNEL); 2729 2730 if (!sb_virt) { 2731 QEDF_ERR(&qedf->dbg_ctx, 2732 "Status block allocation failed for id = %d.\n", 2733 sb_id); 2734 return -ENOMEM; 2735 } 2736 2737 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys, 2738 sb_id, QED_SB_TYPE_STORAGE); 2739 2740 if (ret) { 2741 QEDF_ERR(&qedf->dbg_ctx, 2742 "Status block initialization failed (0x%x) for id = %d.\n", 2743 ret, sb_id); 2744 return ret; 2745 } 2746 2747 return 0; 2748 } 2749 2750 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info) 2751 { 2752 if (sb_info->sb_virt) 2753 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt), 2754 (void *)sb_info->sb_virt, sb_info->sb_phys); 2755 } 2756 2757 static void qedf_destroy_sb(struct qedf_ctx *qedf) 2758 { 2759 int id; 2760 struct qedf_fastpath *fp = NULL; 2761 2762 for (id = 0; id < qedf->num_queues; id++) { 2763 fp = &(qedf->fp_array[id]); 2764 if (fp->sb_id == QEDF_SB_ID_NULL) 2765 break; 2766 qedf_free_sb(qedf, fp->sb_info); 2767 kfree(fp->sb_info); 2768 } 2769 kfree(qedf->fp_array); 2770 } 2771 2772 static int qedf_prepare_sb(struct qedf_ctx *qedf) 2773 { 2774 int id; 2775 struct qedf_fastpath *fp; 2776 int ret; 2777 2778 qedf->fp_array = 2779 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath), 2780 GFP_KERNEL); 2781 2782 if (!qedf->fp_array) { 2783 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation " 2784 "failed.\n"); 2785 return -ENOMEM; 2786 } 2787 2788 for (id = 0; id < qedf->num_queues; id++) { 2789 fp = &(qedf->fp_array[id]); 2790 fp->sb_id = QEDF_SB_ID_NULL; 2791 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL); 2792 if (!fp->sb_info) { 2793 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct " 2794 "allocation failed.\n"); 2795 goto err; 2796 } 2797 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id); 2798 if (ret) { 2799 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and " 2800 "initialization failed.\n"); 2801 goto err; 2802 } 2803 fp->sb_id = id; 2804 fp->qedf = qedf; 2805 fp->cq_num_entries = 2806 qedf->global_queues[id]->cq_mem_size / 2807 sizeof(struct fcoe_cqe); 2808 } 2809 err: 2810 return 0; 2811 } 2812 2813 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe) 2814 { 2815 u16 xid; 2816 struct qedf_ioreq *io_req; 2817 struct qedf_rport *fcport; 2818 u32 comp_type; 2819 u8 io_comp_type; 2820 unsigned long flags; 2821 2822 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2823 FCOE_CQE_CQE_TYPE_MASK; 2824 2825 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2826 io_req = &qedf->cmd_mgr->cmds[xid]; 2827 2828 /* Completion not for a valid I/O anymore so just return */ 2829 if (!io_req) { 2830 QEDF_ERR(&qedf->dbg_ctx, 2831 "io_req is NULL for xid=0x%x.\n", xid); 2832 return; 2833 } 2834 2835 fcport = io_req->fcport; 2836 2837 if (fcport == NULL) { 2838 QEDF_ERR(&qedf->dbg_ctx, 2839 "fcport is NULL for xid=0x%x io_req=%p.\n", 2840 xid, io_req); 2841 return; 2842 } 2843 2844 /* 2845 * Check that fcport is offloaded. If it isn't then the spinlock 2846 * isn't valid and shouldn't be taken. We should just return. 2847 */ 2848 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 2849 QEDF_ERR(&qedf->dbg_ctx, 2850 "Session not offloaded yet, fcport = %p.\n", fcport); 2851 return; 2852 } 2853 2854 spin_lock_irqsave(&fcport->rport_lock, flags); 2855 io_comp_type = io_req->cmd_type; 2856 spin_unlock_irqrestore(&fcport->rport_lock, flags); 2857 2858 switch (comp_type) { 2859 case FCOE_GOOD_COMPLETION_CQE_TYPE: 2860 atomic_inc(&fcport->free_sqes); 2861 switch (io_comp_type) { 2862 case QEDF_SCSI_CMD: 2863 qedf_scsi_completion(qedf, cqe, io_req); 2864 break; 2865 case QEDF_ELS: 2866 qedf_process_els_compl(qedf, cqe, io_req); 2867 break; 2868 case QEDF_TASK_MGMT_CMD: 2869 qedf_process_tmf_compl(qedf, cqe, io_req); 2870 break; 2871 case QEDF_SEQ_CLEANUP: 2872 qedf_process_seq_cleanup_compl(qedf, cqe, io_req); 2873 break; 2874 } 2875 break; 2876 case FCOE_ERROR_DETECTION_CQE_TYPE: 2877 atomic_inc(&fcport->free_sqes); 2878 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2879 "Error detect CQE.\n"); 2880 qedf_process_error_detect(qedf, cqe, io_req); 2881 break; 2882 case FCOE_EXCH_CLEANUP_CQE_TYPE: 2883 atomic_inc(&fcport->free_sqes); 2884 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2885 "Cleanup CQE.\n"); 2886 qedf_process_cleanup_compl(qedf, cqe, io_req); 2887 break; 2888 case FCOE_ABTS_CQE_TYPE: 2889 atomic_inc(&fcport->free_sqes); 2890 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2891 "Abort CQE.\n"); 2892 qedf_process_abts_compl(qedf, cqe, io_req); 2893 break; 2894 case FCOE_DUMMY_CQE_TYPE: 2895 atomic_inc(&fcport->free_sqes); 2896 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2897 "Dummy CQE.\n"); 2898 break; 2899 case FCOE_LOCAL_COMP_CQE_TYPE: 2900 atomic_inc(&fcport->free_sqes); 2901 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2902 "Local completion CQE.\n"); 2903 break; 2904 case FCOE_WARNING_CQE_TYPE: 2905 atomic_inc(&fcport->free_sqes); 2906 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2907 "Warning CQE.\n"); 2908 qedf_process_warning_compl(qedf, cqe, io_req); 2909 break; 2910 case MAX_FCOE_CQE_TYPE: 2911 atomic_inc(&fcport->free_sqes); 2912 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2913 "Max FCoE CQE.\n"); 2914 break; 2915 default: 2916 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2917 "Default CQE.\n"); 2918 break; 2919 } 2920 } 2921 2922 static void qedf_free_bdq(struct qedf_ctx *qedf) 2923 { 2924 int i; 2925 2926 if (qedf->bdq_pbl_list) 2927 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE, 2928 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma); 2929 2930 if (qedf->bdq_pbl) 2931 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size, 2932 qedf->bdq_pbl, qedf->bdq_pbl_dma); 2933 2934 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2935 if (qedf->bdq[i].buf_addr) { 2936 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE, 2937 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma); 2938 } 2939 } 2940 } 2941 2942 static void qedf_free_global_queues(struct qedf_ctx *qedf) 2943 { 2944 int i; 2945 struct global_queue **gl = qedf->global_queues; 2946 2947 for (i = 0; i < qedf->num_queues; i++) { 2948 if (!gl[i]) 2949 continue; 2950 2951 if (gl[i]->cq) 2952 dma_free_coherent(&qedf->pdev->dev, 2953 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma); 2954 if (gl[i]->cq_pbl) 2955 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size, 2956 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 2957 2958 kfree(gl[i]); 2959 } 2960 2961 qedf_free_bdq(qedf); 2962 } 2963 2964 static int qedf_alloc_bdq(struct qedf_ctx *qedf) 2965 { 2966 int i; 2967 struct scsi_bd *pbl; 2968 u64 *list; 2969 2970 /* Alloc dma memory for BDQ buffers */ 2971 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2972 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev, 2973 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL); 2974 if (!qedf->bdq[i].buf_addr) { 2975 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ " 2976 "buffer %d.\n", i); 2977 return -ENOMEM; 2978 } 2979 } 2980 2981 /* Alloc dma memory for BDQ page buffer list */ 2982 qedf->bdq_pbl_mem_size = 2983 QEDF_BDQ_SIZE * sizeof(struct scsi_bd); 2984 qedf->bdq_pbl_mem_size = 2985 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE); 2986 2987 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 2988 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL); 2989 if (!qedf->bdq_pbl) { 2990 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n"); 2991 return -ENOMEM; 2992 } 2993 2994 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2995 "BDQ PBL addr=0x%p dma=%pad\n", 2996 qedf->bdq_pbl, &qedf->bdq_pbl_dma); 2997 2998 /* 2999 * Populate BDQ PBL with physical and virtual address of individual 3000 * BDQ buffers 3001 */ 3002 pbl = (struct scsi_bd *)qedf->bdq_pbl; 3003 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 3004 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma)); 3005 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma)); 3006 pbl->opaque.fcoe_opaque.hi = 0; 3007 /* Opaque lo data is an index into the BDQ array */ 3008 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i); 3009 pbl++; 3010 } 3011 3012 /* Allocate list of PBL pages */ 3013 qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev, 3014 QEDF_PAGE_SIZE, 3015 &qedf->bdq_pbl_list_dma, 3016 GFP_KERNEL); 3017 if (!qedf->bdq_pbl_list) { 3018 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n"); 3019 return -ENOMEM; 3020 } 3021 3022 /* 3023 * Now populate PBL list with pages that contain pointers to the 3024 * individual buffers. 3025 */ 3026 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size / 3027 QEDF_PAGE_SIZE; 3028 list = (u64 *)qedf->bdq_pbl_list; 3029 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) { 3030 *list = qedf->bdq_pbl_dma; 3031 list++; 3032 } 3033 3034 return 0; 3035 } 3036 3037 static int qedf_alloc_global_queues(struct qedf_ctx *qedf) 3038 { 3039 u32 *list; 3040 int i; 3041 int status; 3042 u32 *pbl; 3043 dma_addr_t page; 3044 int num_pages; 3045 3046 /* Allocate and map CQs, RQs */ 3047 /* 3048 * Number of global queues (CQ / RQ). This should 3049 * be <= number of available MSIX vectors for the PF 3050 */ 3051 if (!qedf->num_queues) { 3052 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n"); 3053 return -ENOMEM; 3054 } 3055 3056 /* 3057 * Make sure we allocated the PBL that will contain the physical 3058 * addresses of our queues 3059 */ 3060 if (!qedf->p_cpuq) { 3061 QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n"); 3062 return -EINVAL; 3063 } 3064 3065 qedf->global_queues = kzalloc((sizeof(struct global_queue *) 3066 * qedf->num_queues), GFP_KERNEL); 3067 if (!qedf->global_queues) { 3068 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global " 3069 "queues array ptr memory\n"); 3070 return -ENOMEM; 3071 } 3072 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3073 "qedf->global_queues=%p.\n", qedf->global_queues); 3074 3075 /* Allocate DMA coherent buffers for BDQ */ 3076 status = qedf_alloc_bdq(qedf); 3077 if (status) { 3078 QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n"); 3079 goto mem_alloc_failure; 3080 } 3081 3082 /* Allocate a CQ and an associated PBL for each MSI-X vector */ 3083 for (i = 0; i < qedf->num_queues; i++) { 3084 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue), 3085 GFP_KERNEL); 3086 if (!qedf->global_queues[i]) { 3087 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate " 3088 "global queue %d.\n", i); 3089 status = -ENOMEM; 3090 goto mem_alloc_failure; 3091 } 3092 3093 qedf->global_queues[i]->cq_mem_size = 3094 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3095 qedf->global_queues[i]->cq_mem_size = 3096 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE); 3097 3098 qedf->global_queues[i]->cq_pbl_size = 3099 (qedf->global_queues[i]->cq_mem_size / 3100 PAGE_SIZE) * sizeof(void *); 3101 qedf->global_queues[i]->cq_pbl_size = 3102 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE); 3103 3104 qedf->global_queues[i]->cq = 3105 dma_alloc_coherent(&qedf->pdev->dev, 3106 qedf->global_queues[i]->cq_mem_size, 3107 &qedf->global_queues[i]->cq_dma, 3108 GFP_KERNEL); 3109 3110 if (!qedf->global_queues[i]->cq) { 3111 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n"); 3112 status = -ENOMEM; 3113 goto mem_alloc_failure; 3114 } 3115 3116 qedf->global_queues[i]->cq_pbl = 3117 dma_alloc_coherent(&qedf->pdev->dev, 3118 qedf->global_queues[i]->cq_pbl_size, 3119 &qedf->global_queues[i]->cq_pbl_dma, 3120 GFP_KERNEL); 3121 3122 if (!qedf->global_queues[i]->cq_pbl) { 3123 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n"); 3124 status = -ENOMEM; 3125 goto mem_alloc_failure; 3126 } 3127 3128 /* Create PBL */ 3129 num_pages = qedf->global_queues[i]->cq_mem_size / 3130 QEDF_PAGE_SIZE; 3131 page = qedf->global_queues[i]->cq_dma; 3132 pbl = (u32 *)qedf->global_queues[i]->cq_pbl; 3133 3134 while (num_pages--) { 3135 *pbl = U64_LO(page); 3136 pbl++; 3137 *pbl = U64_HI(page); 3138 pbl++; 3139 page += QEDF_PAGE_SIZE; 3140 } 3141 /* Set the initial consumer index for cq */ 3142 qedf->global_queues[i]->cq_cons_idx = 0; 3143 } 3144 3145 list = (u32 *)qedf->p_cpuq; 3146 3147 /* 3148 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 3149 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 3150 * to the physical address which contains an array of pointers to 3151 * the physical addresses of the specific queue pages. 3152 */ 3153 for (i = 0; i < qedf->num_queues; i++) { 3154 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma); 3155 list++; 3156 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma); 3157 list++; 3158 *list = U64_LO(0); 3159 list++; 3160 *list = U64_HI(0); 3161 list++; 3162 } 3163 3164 return 0; 3165 3166 mem_alloc_failure: 3167 qedf_free_global_queues(qedf); 3168 return status; 3169 } 3170 3171 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf) 3172 { 3173 u8 sq_num_pbl_pages; 3174 u32 sq_mem_size; 3175 u32 cq_mem_size; 3176 u32 cq_num_entries; 3177 int rval; 3178 3179 /* 3180 * The number of completion queues/fastpath interrupts/status blocks 3181 * we allocation is the minimum off: 3182 * 3183 * Number of CPUs 3184 * Number allocated by qed for our PCI function 3185 */ 3186 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf); 3187 3188 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n", 3189 qedf->num_queues); 3190 3191 qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev, 3192 qedf->num_queues * sizeof(struct qedf_glbl_q_params), 3193 &qedf->hw_p_cpuq, GFP_KERNEL); 3194 3195 if (!qedf->p_cpuq) { 3196 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n"); 3197 return 1; 3198 } 3199 3200 rval = qedf_alloc_global_queues(qedf); 3201 if (rval) { 3202 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation " 3203 "failed.\n"); 3204 return 1; 3205 } 3206 3207 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */ 3208 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 3209 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE); 3210 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE); 3211 3212 /* Calculate CQ num entries */ 3213 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3214 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE); 3215 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe); 3216 3217 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params)); 3218 3219 /* Setup the value for fcoe PF */ 3220 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS; 3221 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS; 3222 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr = 3223 (u64)qedf->hw_p_cpuq; 3224 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages; 3225 3226 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0; 3227 3228 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries; 3229 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues; 3230 3231 /* log_page_size: 12 for 4KB pages */ 3232 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE); 3233 3234 qedf->pf_params.fcoe_pf_params.mtu = 9000; 3235 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI; 3236 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI; 3237 3238 /* BDQ address and size */ 3239 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] = 3240 qedf->bdq_pbl_list_dma; 3241 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] = 3242 qedf->bdq_pbl_list_num_entries; 3243 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE; 3244 3245 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3246 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n", 3247 qedf->bdq_pbl_list, 3248 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0], 3249 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]); 3250 3251 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3252 "cq_num_entries=%d.\n", 3253 qedf->pf_params.fcoe_pf_params.cq_num_entries); 3254 3255 return 0; 3256 } 3257 3258 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 3259 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf) 3260 { 3261 size_t size = 0; 3262 3263 if (qedf->p_cpuq) { 3264 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params); 3265 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq, 3266 qedf->hw_p_cpuq); 3267 } 3268 3269 qedf_free_global_queues(qedf); 3270 3271 kfree(qedf->global_queues); 3272 } 3273 3274 /* 3275 * PCI driver functions 3276 */ 3277 3278 static const struct pci_device_id qedf_pci_tbl[] = { 3279 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) }, 3280 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) }, 3281 {0} 3282 }; 3283 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl); 3284 3285 static struct pci_driver qedf_pci_driver = { 3286 .name = QEDF_MODULE_NAME, 3287 .id_table = qedf_pci_tbl, 3288 .probe = qedf_probe, 3289 .remove = qedf_remove, 3290 .shutdown = qedf_shutdown, 3291 .suspend = qedf_suspend, 3292 }; 3293 3294 static int __qedf_probe(struct pci_dev *pdev, int mode) 3295 { 3296 int rc = -EINVAL; 3297 struct fc_lport *lport; 3298 struct qedf_ctx *qedf = NULL; 3299 struct Scsi_Host *host; 3300 bool is_vf = false; 3301 struct qed_ll2_params params; 3302 char host_buf[20]; 3303 struct qed_link_params link_params; 3304 int status; 3305 void *task_start, *task_end; 3306 struct qed_slowpath_params slowpath_params; 3307 struct qed_probe_params qed_params; 3308 u16 retry_cnt = 10; 3309 3310 /* 3311 * When doing error recovery we didn't reap the lport so don't try 3312 * to reallocate it. 3313 */ 3314 retry_probe: 3315 if (mode == QEDF_MODE_RECOVERY) 3316 msleep(2000); 3317 3318 if (mode != QEDF_MODE_RECOVERY) { 3319 lport = libfc_host_alloc(&qedf_host_template, 3320 sizeof(struct qedf_ctx)); 3321 3322 if (!lport) { 3323 QEDF_ERR(NULL, "Could not allocate lport.\n"); 3324 rc = -ENOMEM; 3325 goto err0; 3326 } 3327 3328 fc_disc_init(lport); 3329 3330 /* Initialize qedf_ctx */ 3331 qedf = lport_priv(lport); 3332 set_bit(QEDF_PROBING, &qedf->flags); 3333 qedf->lport = lport; 3334 qedf->ctlr.lp = lport; 3335 qedf->pdev = pdev; 3336 qedf->dbg_ctx.pdev = pdev; 3337 qedf->dbg_ctx.host_no = lport->host->host_no; 3338 spin_lock_init(&qedf->hba_lock); 3339 INIT_LIST_HEAD(&qedf->fcports); 3340 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1; 3341 atomic_set(&qedf->num_offloads, 0); 3342 qedf->stop_io_on_error = false; 3343 pci_set_drvdata(pdev, qedf); 3344 init_completion(&qedf->fipvlan_compl); 3345 mutex_init(&qedf->stats_mutex); 3346 mutex_init(&qedf->flush_mutex); 3347 qedf->flogi_pending = 0; 3348 3349 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, 3350 "QLogic FastLinQ FCoE Module qedf %s, " 3351 "FW %d.%d.%d.%d\n", QEDF_VERSION, 3352 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 3353 FW_ENGINEERING_VERSION); 3354 } else { 3355 /* Init pointers during recovery */ 3356 qedf = pci_get_drvdata(pdev); 3357 set_bit(QEDF_PROBING, &qedf->flags); 3358 lport = qedf->lport; 3359 } 3360 3361 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n"); 3362 3363 host = lport->host; 3364 3365 /* Allocate mempool for qedf_io_work structs */ 3366 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN, 3367 qedf_io_work_cache); 3368 if (qedf->io_mempool == NULL) { 3369 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n"); 3370 goto err1; 3371 } 3372 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n", 3373 qedf->io_mempool); 3374 3375 qedf->link_update_wq = alloc_workqueue("qedf_%u_link", WQ_MEM_RECLAIM, 3376 1, qedf->lport->host->host_no); 3377 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update); 3378 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery); 3379 INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump); 3380 INIT_DELAYED_WORK(&qedf->stag_work, qedf_stag_change_work); 3381 qedf->fipvlan_retries = qedf_fipvlan_retries; 3382 /* Set a default prio in case DCBX doesn't converge */ 3383 if (qedf_default_prio > -1) { 3384 /* 3385 * This is the case where we pass a modparam in so we want to 3386 * honor it even if dcbx doesn't converge. 3387 */ 3388 qedf->prio = qedf_default_prio; 3389 } else 3390 qedf->prio = QEDF_DEFAULT_PRIO; 3391 3392 /* 3393 * Common probe. Takes care of basic hardware init and pci_* 3394 * functions. 3395 */ 3396 memset(&qed_params, 0, sizeof(qed_params)); 3397 qed_params.protocol = QED_PROTOCOL_FCOE; 3398 qed_params.dp_module = qedf_dp_module; 3399 qed_params.dp_level = qedf_dp_level; 3400 qed_params.is_vf = is_vf; 3401 qedf->cdev = qed_ops->common->probe(pdev, &qed_params); 3402 if (!qedf->cdev) { 3403 if ((mode == QEDF_MODE_RECOVERY) && retry_cnt) { 3404 QEDF_ERR(&qedf->dbg_ctx, 3405 "Retry %d initialize hardware\n", retry_cnt); 3406 retry_cnt--; 3407 goto retry_probe; 3408 } 3409 QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n"); 3410 rc = -ENODEV; 3411 goto err1; 3412 } 3413 3414 /* Learn information crucial for qedf to progress */ 3415 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3416 if (rc) { 3417 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n"); 3418 goto err1; 3419 } 3420 3421 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 3422 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n", 3423 qedf->dev_info.common.num_hwfns, 3424 qed_ops->common->get_affin_hwfn_idx(qedf->cdev)); 3425 3426 /* queue allocation code should come here 3427 * order should be 3428 * slowpath_start 3429 * status block allocation 3430 * interrupt registration (to get min number of queues) 3431 * set_fcoe_pf_param 3432 * qed_sp_fcoe_func_start 3433 */ 3434 rc = qedf_set_fcoe_pf_param(qedf); 3435 if (rc) { 3436 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n"); 3437 goto err2; 3438 } 3439 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3440 3441 /* Learn information crucial for qedf to progress */ 3442 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3443 if (rc) { 3444 QEDF_ERR(&qedf->dbg_ctx, "Failed to fill dev info.\n"); 3445 goto err2; 3446 } 3447 3448 if (mode != QEDF_MODE_RECOVERY) { 3449 qedf->devlink = qed_ops->common->devlink_register(qedf->cdev); 3450 if (IS_ERR(qedf->devlink)) { 3451 QEDF_ERR(&qedf->dbg_ctx, "Cannot register devlink\n"); 3452 rc = PTR_ERR(qedf->devlink); 3453 qedf->devlink = NULL; 3454 goto err2; 3455 } 3456 } 3457 3458 /* Record BDQ producer doorbell addresses */ 3459 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr; 3460 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr; 3461 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3462 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod, 3463 qedf->bdq_secondary_prod); 3464 3465 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf); 3466 3467 rc = qedf_prepare_sb(qedf); 3468 if (rc) { 3469 3470 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3471 goto err2; 3472 } 3473 3474 /* Start the Slowpath-process */ 3475 memset(&slowpath_params, 0, sizeof(struct qed_slowpath_params)); 3476 slowpath_params.int_mode = QED_INT_MODE_MSIX; 3477 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER; 3478 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER; 3479 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER; 3480 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER; 3481 strscpy(slowpath_params.name, "qedf", sizeof(slowpath_params.name)); 3482 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params); 3483 if (rc) { 3484 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3485 goto err2; 3486 } 3487 3488 /* 3489 * update_pf_params needs to be called before and after slowpath 3490 * start 3491 */ 3492 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3493 3494 /* Setup interrupts */ 3495 rc = qedf_setup_int(qedf); 3496 if (rc) { 3497 QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n"); 3498 goto err3; 3499 } 3500 3501 rc = qed_ops->start(qedf->cdev, &qedf->tasks); 3502 if (rc) { 3503 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n"); 3504 goto err4; 3505 } 3506 task_start = qedf_get_task_mem(&qedf->tasks, 0); 3507 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1); 3508 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, " 3509 "end=%p block_size=%u.\n", task_start, task_end, 3510 qedf->tasks.size); 3511 3512 /* 3513 * We need to write the number of BDs in the BDQ we've preallocated so 3514 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 3515 * packet arrives. 3516 */ 3517 qedf->bdq_prod_idx = QEDF_BDQ_SIZE; 3518 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3519 "Writing %d to primary and secondary BDQ doorbell registers.\n", 3520 qedf->bdq_prod_idx); 3521 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod); 3522 readw(qedf->bdq_primary_prod); 3523 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod); 3524 readw(qedf->bdq_secondary_prod); 3525 3526 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3527 3528 /* Now that the dev_info struct has been filled in set the MAC 3529 * address 3530 */ 3531 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac); 3532 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n", 3533 qedf->mac); 3534 3535 /* 3536 * Set the WWNN and WWPN in the following way: 3537 * 3538 * If the info we get from qed is non-zero then use that to set the 3539 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based 3540 * on the MAC address. 3541 */ 3542 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) { 3543 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3544 "Setting WWPN and WWNN from qed dev_info.\n"); 3545 qedf->wwnn = qedf->dev_info.wwnn; 3546 qedf->wwpn = qedf->dev_info.wwpn; 3547 } else { 3548 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3549 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n"); 3550 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0); 3551 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0); 3552 } 3553 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx " 3554 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn); 3555 3556 sprintf(host_buf, "host_%d", host->host_no); 3557 qed_ops->common->set_name(qedf->cdev, host_buf); 3558 3559 /* Allocate cmd mgr */ 3560 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf); 3561 if (!qedf->cmd_mgr) { 3562 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n"); 3563 rc = -ENOMEM; 3564 goto err5; 3565 } 3566 3567 if (mode != QEDF_MODE_RECOVERY) { 3568 host->transportt = qedf_fc_transport_template; 3569 host->max_lun = qedf_max_lun; 3570 host->max_cmd_len = QEDF_MAX_CDB_LEN; 3571 host->max_id = QEDF_MAX_SESSIONS; 3572 host->can_queue = FCOE_PARAMS_NUM_TASKS; 3573 rc = scsi_add_host(host, &pdev->dev); 3574 if (rc) { 3575 QEDF_WARN(&qedf->dbg_ctx, 3576 "Error adding Scsi_Host rc=0x%x.\n", rc); 3577 goto err6; 3578 } 3579 } 3580 3581 memset(¶ms, 0, sizeof(params)); 3582 params.mtu = QEDF_LL2_BUF_SIZE; 3583 ether_addr_copy(params.ll2_mac_address, qedf->mac); 3584 3585 /* Start LL2 processing thread */ 3586 qedf->ll2_recv_wq = alloc_workqueue("qedf_%d_ll2", WQ_MEM_RECLAIM, 1, 3587 host->host_no); 3588 if (!qedf->ll2_recv_wq) { 3589 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n"); 3590 rc = -ENOMEM; 3591 goto err7; 3592 } 3593 3594 #ifdef CONFIG_DEBUG_FS 3595 qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops, 3596 qedf_dbg_fops); 3597 #endif 3598 3599 /* Start LL2 */ 3600 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf); 3601 rc = qed_ops->ll2->start(qedf->cdev, ¶ms); 3602 if (rc) { 3603 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n"); 3604 goto err7; 3605 } 3606 set_bit(QEDF_LL2_STARTED, &qedf->flags); 3607 3608 /* Set initial FIP/FCoE VLAN to NULL */ 3609 qedf->vlan_id = 0; 3610 3611 /* 3612 * No need to setup fcoe_ctlr or fc_lport objects during recovery since 3613 * they were not reaped during the unload process. 3614 */ 3615 if (mode != QEDF_MODE_RECOVERY) { 3616 /* Setup imbedded fcoe controller */ 3617 qedf_fcoe_ctlr_setup(qedf); 3618 3619 /* Setup lport */ 3620 rc = qedf_lport_setup(qedf); 3621 if (rc) { 3622 QEDF_ERR(&(qedf->dbg_ctx), 3623 "qedf_lport_setup failed.\n"); 3624 goto err7; 3625 } 3626 } 3627 3628 qedf->timer_work_queue = alloc_workqueue("qedf_%u_timer", 3629 WQ_MEM_RECLAIM, 1, qedf->lport->host->host_no); 3630 if (!qedf->timer_work_queue) { 3631 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer " 3632 "workqueue.\n"); 3633 rc = -ENOMEM; 3634 goto err7; 3635 } 3636 3637 /* DPC workqueue is not reaped during recovery unload */ 3638 if (mode != QEDF_MODE_RECOVERY) { 3639 sprintf(host_buf, "qedf_%u_dpc", 3640 qedf->lport->host->host_no); 3641 qedf->dpc_wq = 3642 alloc_workqueue("%s", WQ_MEM_RECLAIM, 1, host_buf); 3643 } 3644 INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler); 3645 3646 /* 3647 * GRC dump and sysfs parameters are not reaped during the recovery 3648 * unload process. 3649 */ 3650 if (mode != QEDF_MODE_RECOVERY) { 3651 qedf->grcdump_size = 3652 qed_ops->common->dbg_all_data_size(qedf->cdev); 3653 if (qedf->grcdump_size) { 3654 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump, 3655 qedf->grcdump_size); 3656 if (rc) { 3657 QEDF_ERR(&(qedf->dbg_ctx), 3658 "GRC Dump buffer alloc failed.\n"); 3659 qedf->grcdump = NULL; 3660 } 3661 3662 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3663 "grcdump: addr=%p, size=%u.\n", 3664 qedf->grcdump, qedf->grcdump_size); 3665 } 3666 qedf_create_sysfs_ctx_attr(qedf); 3667 3668 /* Initialize I/O tracing for this adapter */ 3669 spin_lock_init(&qedf->io_trace_lock); 3670 qedf->io_trace_idx = 0; 3671 } 3672 3673 init_completion(&qedf->flogi_compl); 3674 3675 status = qed_ops->common->update_drv_state(qedf->cdev, true); 3676 if (status) 3677 QEDF_ERR(&(qedf->dbg_ctx), 3678 "Failed to send drv state to MFW.\n"); 3679 3680 memset(&link_params, 0, sizeof(struct qed_link_params)); 3681 link_params.link_up = true; 3682 status = qed_ops->common->set_link(qedf->cdev, &link_params); 3683 if (status) 3684 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n"); 3685 3686 /* Start/restart discovery */ 3687 if (mode == QEDF_MODE_RECOVERY) 3688 fcoe_ctlr_link_up(&qedf->ctlr); 3689 else 3690 fc_fabric_login(lport); 3691 3692 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n"); 3693 3694 clear_bit(QEDF_PROBING, &qedf->flags); 3695 3696 /* All good */ 3697 return 0; 3698 3699 err7: 3700 if (qedf->ll2_recv_wq) 3701 destroy_workqueue(qedf->ll2_recv_wq); 3702 fc_remove_host(qedf->lport->host); 3703 scsi_remove_host(qedf->lport->host); 3704 #ifdef CONFIG_DEBUG_FS 3705 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3706 #endif 3707 err6: 3708 qedf_cmd_mgr_free(qedf->cmd_mgr); 3709 err5: 3710 qed_ops->stop(qedf->cdev); 3711 err4: 3712 qedf_free_fcoe_pf_param(qedf); 3713 qedf_sync_free_irqs(qedf); 3714 err3: 3715 qed_ops->common->slowpath_stop(qedf->cdev); 3716 err2: 3717 qed_ops->common->remove(qedf->cdev); 3718 err1: 3719 scsi_host_put(lport->host); 3720 err0: 3721 return rc; 3722 } 3723 3724 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id) 3725 { 3726 return __qedf_probe(pdev, QEDF_MODE_NORMAL); 3727 } 3728 3729 static void __qedf_remove(struct pci_dev *pdev, int mode) 3730 { 3731 struct qedf_ctx *qedf; 3732 int rc; 3733 int cnt = 0; 3734 3735 if (!pdev) { 3736 QEDF_ERR(NULL, "pdev is NULL.\n"); 3737 return; 3738 } 3739 3740 qedf = pci_get_drvdata(pdev); 3741 3742 /* 3743 * Prevent race where we're in board disable work and then try to 3744 * rmmod the module. 3745 */ 3746 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 3747 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n"); 3748 return; 3749 } 3750 3751 stag_in_prog: 3752 if (test_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags)) { 3753 QEDF_ERR(&qedf->dbg_ctx, "Stag in progress, cnt=%d.\n", cnt); 3754 cnt++; 3755 3756 if (cnt < 5) { 3757 msleep(500); 3758 goto stag_in_prog; 3759 } 3760 } 3761 3762 if (mode != QEDF_MODE_RECOVERY) 3763 set_bit(QEDF_UNLOADING, &qedf->flags); 3764 3765 /* Logoff the fabric to upload all connections */ 3766 if (mode == QEDF_MODE_RECOVERY) 3767 fcoe_ctlr_link_down(&qedf->ctlr); 3768 else 3769 fc_fabric_logoff(qedf->lport); 3770 3771 if (!qedf_wait_for_upload(qedf)) 3772 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 3773 3774 #ifdef CONFIG_DEBUG_FS 3775 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3776 #endif 3777 3778 /* Stop any link update handling */ 3779 cancel_delayed_work_sync(&qedf->link_update); 3780 destroy_workqueue(qedf->link_update_wq); 3781 qedf->link_update_wq = NULL; 3782 3783 if (qedf->timer_work_queue) 3784 destroy_workqueue(qedf->timer_work_queue); 3785 3786 /* Stop Light L2 */ 3787 clear_bit(QEDF_LL2_STARTED, &qedf->flags); 3788 qed_ops->ll2->stop(qedf->cdev); 3789 if (qedf->ll2_recv_wq) 3790 destroy_workqueue(qedf->ll2_recv_wq); 3791 3792 /* Stop fastpath */ 3793 qedf_sync_free_irqs(qedf); 3794 qedf_destroy_sb(qedf); 3795 3796 /* 3797 * During recovery don't destroy OS constructs that represent the 3798 * physical port. 3799 */ 3800 if (mode != QEDF_MODE_RECOVERY) { 3801 qedf_free_grc_dump_buf(&qedf->grcdump); 3802 qedf_remove_sysfs_ctx_attr(qedf); 3803 3804 /* Remove all SCSI/libfc/libfcoe structures */ 3805 fcoe_ctlr_destroy(&qedf->ctlr); 3806 fc_lport_destroy(qedf->lport); 3807 fc_remove_host(qedf->lport->host); 3808 scsi_remove_host(qedf->lport->host); 3809 } 3810 3811 qedf_cmd_mgr_free(qedf->cmd_mgr); 3812 3813 if (mode != QEDF_MODE_RECOVERY) { 3814 fc_exch_mgr_free(qedf->lport); 3815 fc_lport_free_stats(qedf->lport); 3816 3817 /* Wait for all vports to be reaped */ 3818 qedf_wait_for_vport_destroy(qedf); 3819 } 3820 3821 /* 3822 * Now that all connections have been uploaded we can stop the 3823 * rest of the qed operations 3824 */ 3825 qed_ops->stop(qedf->cdev); 3826 3827 if (mode != QEDF_MODE_RECOVERY) { 3828 if (qedf->dpc_wq) { 3829 /* Stop general DPC handling */ 3830 destroy_workqueue(qedf->dpc_wq); 3831 qedf->dpc_wq = NULL; 3832 } 3833 } 3834 3835 /* Final shutdown for the board */ 3836 qedf_free_fcoe_pf_param(qedf); 3837 if (mode != QEDF_MODE_RECOVERY) { 3838 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3839 pci_set_drvdata(pdev, NULL); 3840 } 3841 3842 rc = qed_ops->common->update_drv_state(qedf->cdev, false); 3843 if (rc) 3844 QEDF_ERR(&(qedf->dbg_ctx), 3845 "Failed to send drv state to MFW.\n"); 3846 3847 if (mode != QEDF_MODE_RECOVERY && qedf->devlink) { 3848 qed_ops->common->devlink_unregister(qedf->devlink); 3849 qedf->devlink = NULL; 3850 } 3851 3852 qed_ops->common->slowpath_stop(qedf->cdev); 3853 qed_ops->common->remove(qedf->cdev); 3854 3855 mempool_destroy(qedf->io_mempool); 3856 3857 /* Only reap the Scsi_host on a real removal */ 3858 if (mode != QEDF_MODE_RECOVERY) 3859 scsi_host_put(qedf->lport->host); 3860 } 3861 3862 static void qedf_remove(struct pci_dev *pdev) 3863 { 3864 /* Check to make sure this function wasn't already disabled */ 3865 if (!atomic_read(&pdev->enable_cnt)) 3866 return; 3867 3868 __qedf_remove(pdev, QEDF_MODE_NORMAL); 3869 } 3870 3871 void qedf_wq_grcdump(struct work_struct *work) 3872 { 3873 struct qedf_ctx *qedf = 3874 container_of(work, struct qedf_ctx, grcdump_work.work); 3875 3876 QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n"); 3877 qedf_capture_grc_dump(qedf); 3878 } 3879 3880 void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type) 3881 { 3882 struct qedf_ctx *qedf = dev; 3883 3884 QEDF_ERR(&(qedf->dbg_ctx), 3885 "Hardware error handler scheduled, event=%d.\n", 3886 err_type); 3887 3888 if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) { 3889 QEDF_ERR(&(qedf->dbg_ctx), 3890 "Already in recovery, not scheduling board disable work.\n"); 3891 return; 3892 } 3893 3894 switch (err_type) { 3895 case QED_HW_ERR_FAN_FAIL: 3896 schedule_delayed_work(&qedf->board_disable_work, 0); 3897 break; 3898 case QED_HW_ERR_MFW_RESP_FAIL: 3899 case QED_HW_ERR_HW_ATTN: 3900 case QED_HW_ERR_DMAE_FAIL: 3901 case QED_HW_ERR_FW_ASSERT: 3902 /* Prevent HW attentions from being reasserted */ 3903 qed_ops->common->attn_clr_enable(qedf->cdev, true); 3904 break; 3905 case QED_HW_ERR_RAMROD_FAIL: 3906 /* Prevent HW attentions from being reasserted */ 3907 qed_ops->common->attn_clr_enable(qedf->cdev, true); 3908 3909 if (qedf_enable_recovery && qedf->devlink) 3910 qed_ops->common->report_fatal_error(qedf->devlink, 3911 err_type); 3912 3913 break; 3914 default: 3915 break; 3916 } 3917 } 3918 3919 /* 3920 * Protocol TLV handler 3921 */ 3922 void qedf_get_protocol_tlv_data(void *dev, void *data) 3923 { 3924 struct qedf_ctx *qedf = dev; 3925 struct qed_mfw_tlv_fcoe *fcoe = data; 3926 struct fc_lport *lport; 3927 struct Scsi_Host *host; 3928 struct fc_host_attrs *fc_host; 3929 struct fc_host_statistics *hst; 3930 3931 if (!qedf) { 3932 QEDF_ERR(NULL, "qedf is null.\n"); 3933 return; 3934 } 3935 3936 if (test_bit(QEDF_PROBING, &qedf->flags)) { 3937 QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n"); 3938 return; 3939 } 3940 3941 lport = qedf->lport; 3942 host = lport->host; 3943 fc_host = shost_to_fc_host(host); 3944 3945 /* Force a refresh of the fc_host stats including offload stats */ 3946 hst = qedf_fc_get_host_stats(host); 3947 3948 fcoe->qos_pri_set = true; 3949 fcoe->qos_pri = 3; /* Hard coded to 3 in driver */ 3950 3951 fcoe->ra_tov_set = true; 3952 fcoe->ra_tov = lport->r_a_tov; 3953 3954 fcoe->ed_tov_set = true; 3955 fcoe->ed_tov = lport->e_d_tov; 3956 3957 fcoe->npiv_state_set = true; 3958 fcoe->npiv_state = 1; /* NPIV always enabled */ 3959 3960 fcoe->num_npiv_ids_set = true; 3961 fcoe->num_npiv_ids = fc_host->npiv_vports_inuse; 3962 3963 /* Certain attributes we only want to set if we've selected an FCF */ 3964 if (qedf->ctlr.sel_fcf) { 3965 fcoe->switch_name_set = true; 3966 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name); 3967 } 3968 3969 fcoe->port_state_set = true; 3970 /* For qedf we're either link down or fabric attach */ 3971 if (lport->link_up) 3972 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC; 3973 else 3974 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE; 3975 3976 fcoe->link_failures_set = true; 3977 fcoe->link_failures = (u16)hst->link_failure_count; 3978 3979 fcoe->fcoe_txq_depth_set = true; 3980 fcoe->fcoe_rxq_depth_set = true; 3981 fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS; 3982 fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS; 3983 3984 fcoe->fcoe_rx_frames_set = true; 3985 fcoe->fcoe_rx_frames = hst->rx_frames; 3986 3987 fcoe->fcoe_tx_frames_set = true; 3988 fcoe->fcoe_tx_frames = hst->tx_frames; 3989 3990 fcoe->fcoe_rx_bytes_set = true; 3991 fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000; 3992 3993 fcoe->fcoe_tx_bytes_set = true; 3994 fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000; 3995 3996 fcoe->crc_count_set = true; 3997 fcoe->crc_count = hst->invalid_crc_count; 3998 3999 fcoe->tx_abts_set = true; 4000 fcoe->tx_abts = hst->fcp_packet_aborts; 4001 4002 fcoe->tx_lun_rst_set = true; 4003 fcoe->tx_lun_rst = qedf->lun_resets; 4004 4005 fcoe->abort_task_sets_set = true; 4006 fcoe->abort_task_sets = qedf->packet_aborts; 4007 4008 fcoe->scsi_busy_set = true; 4009 fcoe->scsi_busy = qedf->busy; 4010 4011 fcoe->scsi_tsk_full_set = true; 4012 fcoe->scsi_tsk_full = qedf->task_set_fulls; 4013 } 4014 4015 /* Deferred work function to perform soft context reset on STAG change */ 4016 void qedf_stag_change_work(struct work_struct *work) 4017 { 4018 struct qedf_ctx *qedf = 4019 container_of(work, struct qedf_ctx, stag_work.work); 4020 4021 if (!qedf) { 4022 QEDF_ERR(&qedf->dbg_ctx, "qedf is NULL"); 4023 return; 4024 } 4025 4026 if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) { 4027 QEDF_ERR(&qedf->dbg_ctx, 4028 "Already is in recovery, hence not calling software context reset.\n"); 4029 return; 4030 } 4031 4032 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 4033 QEDF_ERR(&qedf->dbg_ctx, "Driver unloading\n"); 4034 return; 4035 } 4036 4037 set_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags); 4038 4039 printk_ratelimited("[%s]:[%s:%d]:%d: Performing software context reset.", 4040 dev_name(&qedf->pdev->dev), __func__, __LINE__, 4041 qedf->dbg_ctx.host_no); 4042 qedf_ctx_soft_reset(qedf->lport); 4043 } 4044 4045 static void qedf_shutdown(struct pci_dev *pdev) 4046 { 4047 __qedf_remove(pdev, QEDF_MODE_NORMAL); 4048 } 4049 4050 static int qedf_suspend(struct pci_dev *pdev, pm_message_t state) 4051 { 4052 struct qedf_ctx *qedf; 4053 4054 if (!pdev) { 4055 QEDF_ERR(NULL, "pdev is NULL.\n"); 4056 return -ENODEV; 4057 } 4058 4059 qedf = pci_get_drvdata(pdev); 4060 4061 QEDF_ERR(&qedf->dbg_ctx, "%s: Device does not support suspend operation\n", __func__); 4062 4063 return -EPERM; 4064 } 4065 4066 /* 4067 * Recovery handler code 4068 */ 4069 static void qedf_schedule_recovery_handler(void *dev) 4070 { 4071 struct qedf_ctx *qedf = dev; 4072 4073 QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n"); 4074 schedule_delayed_work(&qedf->recovery_work, 0); 4075 } 4076 4077 static void qedf_recovery_handler(struct work_struct *work) 4078 { 4079 struct qedf_ctx *qedf = 4080 container_of(work, struct qedf_ctx, recovery_work.work); 4081 4082 if (test_and_set_bit(QEDF_IN_RECOVERY, &qedf->flags)) 4083 return; 4084 4085 /* 4086 * Call common_ops->recovery_prolog to allow the MFW to quiesce 4087 * any PCI transactions. 4088 */ 4089 qed_ops->common->recovery_prolog(qedf->cdev); 4090 4091 QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n"); 4092 __qedf_remove(qedf->pdev, QEDF_MODE_RECOVERY); 4093 /* 4094 * Reset link and dcbx to down state since we will not get a link down 4095 * event from the MFW but calling __qedf_remove will essentially be a 4096 * link down event. 4097 */ 4098 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 4099 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 4100 __qedf_probe(qedf->pdev, QEDF_MODE_RECOVERY); 4101 clear_bit(QEDF_IN_RECOVERY, &qedf->flags); 4102 QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n"); 4103 } 4104 4105 /* Generic TLV data callback */ 4106 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 4107 { 4108 struct qedf_ctx *qedf; 4109 4110 if (!dev) { 4111 QEDF_INFO(NULL, QEDF_LOG_EVT, 4112 "dev is NULL so ignoring get_generic_tlv_data request.\n"); 4113 return; 4114 } 4115 qedf = (struct qedf_ctx *)dev; 4116 4117 memset(data, 0, sizeof(struct qed_generic_tlvs)); 4118 ether_addr_copy(data->mac[0], qedf->mac); 4119 } 4120 4121 /* 4122 * Module Init/Remove 4123 */ 4124 4125 static int __init qedf_init(void) 4126 { 4127 int ret; 4128 4129 /* If debug=1 passed, set the default log mask */ 4130 if (qedf_debug == QEDF_LOG_DEFAULT) 4131 qedf_debug = QEDF_DEFAULT_LOG_MASK; 4132 4133 /* 4134 * Check that default prio for FIP/FCoE traffic is between 0..7 if a 4135 * value has been set 4136 */ 4137 if (qedf_default_prio > -1) 4138 if (qedf_default_prio > 7) { 4139 qedf_default_prio = QEDF_DEFAULT_PRIO; 4140 QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n", 4141 QEDF_DEFAULT_PRIO); 4142 } 4143 4144 /* Print driver banner */ 4145 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR, 4146 QEDF_VERSION); 4147 4148 /* Create kmem_cache for qedf_io_work structs */ 4149 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache", 4150 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL); 4151 if (qedf_io_work_cache == NULL) { 4152 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n"); 4153 goto err1; 4154 } 4155 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n", 4156 qedf_io_work_cache); 4157 4158 qed_ops = qed_get_fcoe_ops(); 4159 if (!qed_ops) { 4160 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n"); 4161 goto err1; 4162 } 4163 4164 #ifdef CONFIG_DEBUG_FS 4165 qedf_dbg_init("qedf"); 4166 #endif 4167 4168 qedf_fc_transport_template = 4169 fc_attach_transport(&qedf_fc_transport_fn); 4170 if (!qedf_fc_transport_template) { 4171 QEDF_ERR(NULL, "Could not register with FC transport\n"); 4172 goto err2; 4173 } 4174 4175 qedf_fc_vport_transport_template = 4176 fc_attach_transport(&qedf_fc_vport_transport_fn); 4177 if (!qedf_fc_vport_transport_template) { 4178 QEDF_ERR(NULL, "Could not register vport template with FC " 4179 "transport\n"); 4180 goto err3; 4181 } 4182 4183 qedf_io_wq = alloc_workqueue("%s", WQ_MEM_RECLAIM, 1, "qedf_io_wq"); 4184 if (!qedf_io_wq) { 4185 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n"); 4186 goto err4; 4187 } 4188 4189 qedf_cb_ops.get_login_failures = qedf_get_login_failures; 4190 4191 ret = pci_register_driver(&qedf_pci_driver); 4192 if (ret) { 4193 QEDF_ERR(NULL, "Failed to register driver\n"); 4194 goto err5; 4195 } 4196 4197 return 0; 4198 4199 err5: 4200 destroy_workqueue(qedf_io_wq); 4201 err4: 4202 fc_release_transport(qedf_fc_vport_transport_template); 4203 err3: 4204 fc_release_transport(qedf_fc_transport_template); 4205 err2: 4206 #ifdef CONFIG_DEBUG_FS 4207 qedf_dbg_exit(); 4208 #endif 4209 qed_put_fcoe_ops(); 4210 err1: 4211 return -EINVAL; 4212 } 4213 4214 static void __exit qedf_cleanup(void) 4215 { 4216 pci_unregister_driver(&qedf_pci_driver); 4217 4218 destroy_workqueue(qedf_io_wq); 4219 4220 fc_release_transport(qedf_fc_vport_transport_template); 4221 fc_release_transport(qedf_fc_transport_template); 4222 #ifdef CONFIG_DEBUG_FS 4223 qedf_dbg_exit(); 4224 #endif 4225 qed_put_fcoe_ops(); 4226 4227 kmem_cache_destroy(qedf_io_work_cache); 4228 } 4229 4230 MODULE_LICENSE("GPL"); 4231 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module"); 4232 MODULE_AUTHOR("QLogic Corporation"); 4233 MODULE_VERSION(QEDF_VERSION); 4234 module_init(qedf_init); 4235 module_exit(qedf_cleanup); 4236