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_scsi_eh(sc_cmd); 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 QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...", 869 sc_cmd->device->host->host_no, sc_cmd->device->id, 870 sc_cmd->device->lun); 871 return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET); 872 } 873 874 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd) 875 { 876 QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ", 877 sc_cmd->device->host->host_no, sc_cmd->device->id, 878 sc_cmd->device->lun); 879 return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET); 880 } 881 882 bool qedf_wait_for_upload(struct qedf_ctx *qedf) 883 { 884 struct qedf_rport *fcport; 885 int wait_cnt = 120; 886 887 while (wait_cnt--) { 888 if (atomic_read(&qedf->num_offloads)) 889 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 890 "Waiting for all uploads to complete num_offloads = 0x%x.\n", 891 atomic_read(&qedf->num_offloads)); 892 else 893 return true; 894 msleep(500); 895 } 896 897 rcu_read_lock(); 898 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 899 if (test_bit(QEDF_RPORT_SESSION_READY, 900 &fcport->flags)) { 901 if (fcport->rdata) 902 QEDF_ERR(&qedf->dbg_ctx, 903 "Waiting for fcport %p portid=%06x.\n", 904 fcport, fcport->rdata->ids.port_id); 905 } else { 906 QEDF_ERR(&qedf->dbg_ctx, 907 "Waiting for fcport %p.\n", fcport); 908 } 909 } 910 911 rcu_read_unlock(); 912 return false; 913 } 914 915 /* Performs soft reset of qedf_ctx by simulating a link down/up */ 916 void qedf_ctx_soft_reset(struct fc_lport *lport) 917 { 918 struct qedf_ctx *qedf; 919 struct qed_link_output if_link; 920 921 qedf = lport_priv(lport); 922 923 if (lport->vport) { 924 clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags); 925 printk_ratelimited("Cannot issue host reset on NPIV port.\n"); 926 return; 927 } 928 929 qedf->flogi_pending = 0; 930 /* For host reset, essentially do a soft link up/down */ 931 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 932 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 933 "Queuing link down work.\n"); 934 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 935 0); 936 937 if (qedf_wait_for_upload(qedf) == false) { 938 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 939 WARN_ON(atomic_read(&qedf->num_offloads)); 940 } 941 942 /* Before setting link up query physical link state */ 943 qed_ops->common->get_link(qedf->cdev, &if_link); 944 /* Bail if the physical link is not up */ 945 if (!if_link.link_up) { 946 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 947 "Physical link is not up.\n"); 948 clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags); 949 return; 950 } 951 /* Flush and wait to make sure link down is processed */ 952 flush_delayed_work(&qedf->link_update); 953 msleep(500); 954 955 atomic_set(&qedf->link_state, QEDF_LINK_UP); 956 qedf->vlan_id = 0; 957 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 958 "Queue link up work.\n"); 959 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 960 0); 961 clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags); 962 } 963 964 /* Reset the host by gracefully logging out and then logging back in */ 965 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd) 966 { 967 struct fc_lport *lport; 968 struct qedf_ctx *qedf; 969 970 lport = shost_priv(sc_cmd->device->host); 971 qedf = lport_priv(lport); 972 973 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN || 974 test_bit(QEDF_UNLOADING, &qedf->flags)) 975 return FAILED; 976 977 QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued..."); 978 979 qedf_ctx_soft_reset(lport); 980 981 return SUCCESS; 982 } 983 984 static int qedf_slave_configure(struct scsi_device *sdev) 985 { 986 if (qedf_queue_depth) { 987 scsi_change_queue_depth(sdev, qedf_queue_depth); 988 } 989 990 return 0; 991 } 992 993 static const struct scsi_host_template qedf_host_template = { 994 .module = THIS_MODULE, 995 .name = QEDF_MODULE_NAME, 996 .this_id = -1, 997 .cmd_per_lun = 32, 998 .max_sectors = 0xffff, 999 .queuecommand = qedf_queuecommand, 1000 .shost_groups = qedf_host_groups, 1001 .eh_abort_handler = qedf_eh_abort, 1002 .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */ 1003 .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */ 1004 .eh_host_reset_handler = qedf_eh_host_reset, 1005 .slave_configure = qedf_slave_configure, 1006 .dma_boundary = QED_HW_DMA_BOUNDARY, 1007 .sg_tablesize = QEDF_MAX_BDS_PER_CMD, 1008 .can_queue = FCOE_PARAMS_NUM_TASKS, 1009 .change_queue_depth = scsi_change_queue_depth, 1010 .cmd_size = sizeof(struct qedf_cmd_priv), 1011 }; 1012 1013 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen) 1014 { 1015 int rc; 1016 1017 spin_lock(&qedf_global_lock); 1018 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global); 1019 spin_unlock(&qedf_global_lock); 1020 1021 return rc; 1022 } 1023 1024 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id) 1025 { 1026 struct qedf_rport *fcport; 1027 struct fc_rport_priv *rdata; 1028 1029 rcu_read_lock(); 1030 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 1031 rdata = fcport->rdata; 1032 if (rdata == NULL) 1033 continue; 1034 if (rdata->ids.port_id == port_id) { 1035 rcu_read_unlock(); 1036 return fcport; 1037 } 1038 } 1039 rcu_read_unlock(); 1040 1041 /* Return NULL to caller to let them know fcport was not found */ 1042 return NULL; 1043 } 1044 1045 /* Transmits an ELS frame over an offloaded session */ 1046 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp) 1047 { 1048 struct fc_frame_header *fh; 1049 int rc = 0; 1050 1051 fh = fc_frame_header_get(fp); 1052 if ((fh->fh_type == FC_TYPE_ELS) && 1053 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 1054 switch (fc_frame_payload_op(fp)) { 1055 case ELS_ADISC: 1056 qedf_send_adisc(fcport, fp); 1057 rc = 1; 1058 break; 1059 } 1060 } 1061 1062 return rc; 1063 } 1064 1065 /* 1066 * qedf_xmit - qedf FCoE frame transmit function 1067 */ 1068 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp) 1069 { 1070 struct fc_lport *base_lport; 1071 struct qedf_ctx *qedf; 1072 struct ethhdr *eh; 1073 struct fcoe_crc_eof *cp; 1074 struct sk_buff *skb; 1075 struct fc_frame_header *fh; 1076 struct fcoe_hdr *hp; 1077 u8 sof, eof; 1078 u32 crc; 1079 unsigned int hlen, tlen, elen; 1080 int wlen; 1081 struct fc_lport *tmp_lport; 1082 struct fc_lport *vn_port = NULL; 1083 struct qedf_rport *fcport; 1084 int rc; 1085 u16 vlan_tci = 0; 1086 1087 qedf = (struct qedf_ctx *)lport_priv(lport); 1088 1089 fh = fc_frame_header_get(fp); 1090 skb = fp_skb(fp); 1091 1092 /* Filter out traffic to other NPIV ports on the same host */ 1093 if (lport->vport) 1094 base_lport = shost_priv(vport_to_shost(lport->vport)); 1095 else 1096 base_lport = lport; 1097 1098 /* Flag if the destination is the base port */ 1099 if (base_lport->port_id == ntoh24(fh->fh_d_id)) { 1100 vn_port = base_lport; 1101 } else { 1102 /* Got through the list of vports attached to the base_lport 1103 * and see if we have a match with the destination address. 1104 */ 1105 list_for_each_entry(tmp_lport, &base_lport->vports, list) { 1106 if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) { 1107 vn_port = tmp_lport; 1108 break; 1109 } 1110 } 1111 } 1112 if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) { 1113 struct fc_rport_priv *rdata = NULL; 1114 1115 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 1116 "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id)); 1117 kfree_skb(skb); 1118 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id)); 1119 if (rdata) { 1120 rdata->retries = lport->max_rport_retry_count; 1121 kref_put(&rdata->kref, fc_rport_destroy); 1122 } 1123 return -EINVAL; 1124 } 1125 /* End NPIV filtering */ 1126 1127 if (!qedf->ctlr.sel_fcf) { 1128 kfree_skb(skb); 1129 return 0; 1130 } 1131 1132 if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) { 1133 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n"); 1134 kfree_skb(skb); 1135 return 0; 1136 } 1137 1138 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 1139 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n"); 1140 kfree_skb(skb); 1141 return 0; 1142 } 1143 1144 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 1145 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb)) 1146 return 0; 1147 } 1148 1149 /* Check to see if this needs to be sent on an offloaded session */ 1150 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 1151 1152 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1153 rc = qedf_xmit_l2_frame(fcport, fp); 1154 /* 1155 * If the frame was successfully sent over the middle path 1156 * then do not try to also send it over the LL2 path 1157 */ 1158 if (rc) 1159 return 0; 1160 } 1161 1162 sof = fr_sof(fp); 1163 eof = fr_eof(fp); 1164 1165 elen = sizeof(struct ethhdr); 1166 hlen = sizeof(struct fcoe_hdr); 1167 tlen = sizeof(struct fcoe_crc_eof); 1168 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; 1169 1170 skb->ip_summed = CHECKSUM_NONE; 1171 crc = fcoe_fc_crc(fp); 1172 1173 /* copy port crc and eof to the skb buff */ 1174 if (skb_is_nonlinear(skb)) { 1175 skb_frag_t *frag; 1176 1177 if (qedf_get_paged_crc_eof(skb, tlen)) { 1178 kfree_skb(skb); 1179 return -ENOMEM; 1180 } 1181 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; 1182 cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag); 1183 } else { 1184 cp = skb_put(skb, tlen); 1185 } 1186 1187 memset(cp, 0, sizeof(*cp)); 1188 cp->fcoe_eof = eof; 1189 cp->fcoe_crc32 = cpu_to_le32(~crc); 1190 if (skb_is_nonlinear(skb)) { 1191 kunmap_atomic(cp); 1192 cp = NULL; 1193 } 1194 1195 1196 /* adjust skb network/transport offsets to match mac/fcoe/port */ 1197 skb_push(skb, elen + hlen); 1198 skb_reset_mac_header(skb); 1199 skb_reset_network_header(skb); 1200 skb->mac_len = elen; 1201 skb->protocol = htons(ETH_P_FCOE); 1202 1203 /* 1204 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN 1205 * for FIP/FCoE traffic. 1206 */ 1207 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id); 1208 1209 /* fill up mac and fcoe headers */ 1210 eh = eth_hdr(skb); 1211 eh->h_proto = htons(ETH_P_FCOE); 1212 if (qedf->ctlr.map_dest) 1213 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); 1214 else 1215 /* insert GW address */ 1216 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr); 1217 1218 /* Set the source MAC address */ 1219 ether_addr_copy(eh->h_source, qedf->data_src_addr); 1220 1221 hp = (struct fcoe_hdr *)(eh + 1); 1222 memset(hp, 0, sizeof(*hp)); 1223 if (FC_FCOE_VER) 1224 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); 1225 hp->fcoe_sof = sof; 1226 1227 /*update tx stats */ 1228 this_cpu_inc(lport->stats->TxFrames); 1229 this_cpu_add(lport->stats->TxWords, wlen); 1230 1231 /* Get VLAN ID from skb for printing purposes */ 1232 __vlan_hwaccel_get_tag(skb, &vlan_tci); 1233 1234 /* send down to lld */ 1235 fr_dev(fp) = lport; 1236 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: " 1237 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n", 1238 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type, 1239 vlan_tci); 1240 if (qedf_dump_frames) 1241 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 1242 1, skb->data, skb->len, false); 1243 rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0); 1244 if (rc) { 1245 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc); 1246 kfree_skb(skb); 1247 return rc; 1248 } 1249 1250 return 0; 1251 } 1252 1253 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1254 { 1255 int rval = 0; 1256 u32 *pbl; 1257 dma_addr_t page; 1258 int num_pages; 1259 1260 /* Calculate appropriate queue and PBL sizes */ 1261 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 1262 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE); 1263 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) * 1264 sizeof(void *); 1265 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE; 1266 1267 fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1268 &fcport->sq_dma, GFP_KERNEL); 1269 if (!fcport->sq) { 1270 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n"); 1271 rval = 1; 1272 goto out; 1273 } 1274 1275 fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 1276 fcport->sq_pbl_size, 1277 &fcport->sq_pbl_dma, GFP_KERNEL); 1278 if (!fcport->sq_pbl) { 1279 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n"); 1280 rval = 1; 1281 goto out_free_sq; 1282 } 1283 1284 /* Create PBL */ 1285 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE; 1286 page = fcport->sq_dma; 1287 pbl = (u32 *)fcport->sq_pbl; 1288 1289 while (num_pages--) { 1290 *pbl = U64_LO(page); 1291 pbl++; 1292 *pbl = U64_HI(page); 1293 pbl++; 1294 page += QEDF_PAGE_SIZE; 1295 } 1296 1297 return rval; 1298 1299 out_free_sq: 1300 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq, 1301 fcport->sq_dma); 1302 out: 1303 return rval; 1304 } 1305 1306 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1307 { 1308 if (fcport->sq_pbl) 1309 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size, 1310 fcport->sq_pbl, fcport->sq_pbl_dma); 1311 if (fcport->sq) 1312 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1313 fcport->sq, fcport->sq_dma); 1314 } 1315 1316 static int qedf_offload_connection(struct qedf_ctx *qedf, 1317 struct qedf_rport *fcport) 1318 { 1319 struct qed_fcoe_params_offload conn_info; 1320 u32 port_id; 1321 int rval; 1322 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe)); 1323 1324 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection " 1325 "portid=%06x.\n", fcport->rdata->ids.port_id); 1326 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle, 1327 &fcport->fw_cid, &fcport->p_doorbell); 1328 if (rval) { 1329 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection " 1330 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1331 rval = 1; /* For some reason qed returns 0 on failure here */ 1332 goto out; 1333 } 1334 1335 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x " 1336 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id, 1337 fcport->fw_cid, fcport->handle); 1338 1339 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload)); 1340 1341 /* Fill in the offload connection info */ 1342 conn_info.sq_pbl_addr = fcport->sq_pbl_dma; 1343 1344 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl); 1345 conn_info.sq_next_page_addr = 1346 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8)); 1347 1348 /* Need to use our FCoE MAC for the offload session */ 1349 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr); 1350 1351 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr); 1352 1353 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size; 1354 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov; 1355 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */ 1356 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size; 1357 1358 /* Set VLAN data */ 1359 conn_info.vlan_tag = qedf->vlan_id << 1360 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT; 1361 conn_info.vlan_tag |= 1362 qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT; 1363 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK << 1364 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT); 1365 1366 /* Set host port source id */ 1367 port_id = fc_host_port_id(qedf->lport->host); 1368 fcport->sid = port_id; 1369 conn_info.s_id.addr_hi = (port_id & 0x000000FF); 1370 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1371 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1372 1373 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq; 1374 1375 /* Set remote port destination id */ 1376 port_id = fcport->rdata->rport->port_id; 1377 conn_info.d_id.addr_hi = (port_id & 0x000000FF); 1378 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1379 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1380 1381 conn_info.def_q_idx = 0; /* Default index for send queue? */ 1382 1383 /* Set FC-TAPE specific flags if needed */ 1384 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) { 1385 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, 1386 "Enable CONF, REC for portid=%06x.\n", 1387 fcport->rdata->ids.port_id); 1388 conn_info.flags |= 1 << 1389 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT; 1390 conn_info.flags |= 1391 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) << 1392 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT; 1393 } 1394 1395 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info); 1396 if (rval) { 1397 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection " 1398 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1399 goto out_free_conn; 1400 } else 1401 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload " 1402 "succeeded portid=%06x total_sqe=%d.\n", 1403 fcport->rdata->ids.port_id, total_sqe); 1404 1405 spin_lock_init(&fcport->rport_lock); 1406 atomic_set(&fcport->free_sqes, total_sqe); 1407 return 0; 1408 out_free_conn: 1409 qed_ops->release_conn(qedf->cdev, fcport->handle); 1410 out: 1411 return rval; 1412 } 1413 1414 #define QEDF_TERM_BUFF_SIZE 10 1415 static void qedf_upload_connection(struct qedf_ctx *qedf, 1416 struct qedf_rport *fcport) 1417 { 1418 void *term_params; 1419 dma_addr_t term_params_dma; 1420 1421 /* Term params needs to be a DMA coherent buffer as qed shared the 1422 * physical DMA address with the firmware. The buffer may be used in 1423 * the receive path so we may eventually have to move this. 1424 */ 1425 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, 1426 &term_params_dma, GFP_KERNEL); 1427 if (!term_params) 1428 return; 1429 1430 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection " 1431 "port_id=%06x.\n", fcport->rdata->ids.port_id); 1432 1433 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma); 1434 qed_ops->release_conn(qedf->cdev, fcport->handle); 1435 1436 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params, 1437 term_params_dma); 1438 } 1439 1440 static void qedf_cleanup_fcport(struct qedf_ctx *qedf, 1441 struct qedf_rport *fcport) 1442 { 1443 struct fc_rport_priv *rdata = fcport->rdata; 1444 1445 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n", 1446 fcport->rdata->ids.port_id); 1447 1448 /* Flush any remaining i/o's before we upload the connection */ 1449 qedf_flush_active_ios(fcport, -1); 1450 1451 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) 1452 qedf_upload_connection(qedf, fcport); 1453 qedf_free_sq(qedf, fcport); 1454 fcport->rdata = NULL; 1455 fcport->qedf = NULL; 1456 kref_put(&rdata->kref, fc_rport_destroy); 1457 } 1458 1459 /* 1460 * This event_callback is called after successful completion of libfc 1461 * initiated target login. qedf can proceed with initiating the session 1462 * establishment. 1463 */ 1464 static void qedf_rport_event_handler(struct fc_lport *lport, 1465 struct fc_rport_priv *rdata, 1466 enum fc_rport_event event) 1467 { 1468 struct qedf_ctx *qedf = lport_priv(lport); 1469 struct fc_rport *rport = rdata->rport; 1470 struct fc_rport_libfc_priv *rp; 1471 struct qedf_rport *fcport; 1472 u32 port_id; 1473 int rval; 1474 unsigned long flags; 1475 1476 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, " 1477 "port_id = 0x%x\n", event, rdata->ids.port_id); 1478 1479 switch (event) { 1480 case RPORT_EV_READY: 1481 if (!rport) { 1482 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n"); 1483 break; 1484 } 1485 1486 rp = rport->dd_data; 1487 fcport = (struct qedf_rport *)&rp[1]; 1488 fcport->qedf = qedf; 1489 1490 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) { 1491 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading " 1492 "portid=0x%x as max number of offloaded sessions " 1493 "reached.\n", rdata->ids.port_id); 1494 return; 1495 } 1496 1497 /* 1498 * Don't try to offload the session again. Can happen when we 1499 * get an ADISC 1500 */ 1501 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1502 QEDF_WARN(&(qedf->dbg_ctx), "Session already " 1503 "offloaded, portid=0x%x.\n", 1504 rdata->ids.port_id); 1505 return; 1506 } 1507 1508 if (rport->port_id == FC_FID_DIR_SERV) { 1509 /* 1510 * qedf_rport structure doesn't exist for 1511 * directory server. 1512 * We should not come here, as lport will 1513 * take care of fabric login 1514 */ 1515 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not " 1516 "exist for dir server port_id=%x\n", 1517 rdata->ids.port_id); 1518 break; 1519 } 1520 1521 if (rdata->spp_type != FC_TYPE_FCP) { 1522 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1523 "Not offloading since spp type isn't FCP\n"); 1524 break; 1525 } 1526 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1527 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1528 "Not FCP target so not offloading\n"); 1529 break; 1530 } 1531 1532 /* Initial reference held on entry, so this can't fail */ 1533 kref_get(&rdata->kref); 1534 fcport->rdata = rdata; 1535 fcport->rport = rport; 1536 1537 rval = qedf_alloc_sq(qedf, fcport); 1538 if (rval) { 1539 qedf_cleanup_fcport(qedf, fcport); 1540 break; 1541 } 1542 1543 /* Set device type */ 1544 if (rdata->flags & FC_RP_FLAGS_RETRY && 1545 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET && 1546 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) { 1547 fcport->dev_type = QEDF_RPORT_TYPE_TAPE; 1548 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1549 "portid=%06x is a TAPE device.\n", 1550 rdata->ids.port_id); 1551 } else { 1552 fcport->dev_type = QEDF_RPORT_TYPE_DISK; 1553 } 1554 1555 rval = qedf_offload_connection(qedf, fcport); 1556 if (rval) { 1557 qedf_cleanup_fcport(qedf, fcport); 1558 break; 1559 } 1560 1561 /* Add fcport to list of qedf_ctx list of offloaded ports */ 1562 spin_lock_irqsave(&qedf->hba_lock, flags); 1563 list_add_rcu(&fcport->peers, &qedf->fcports); 1564 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1565 1566 /* 1567 * Set the session ready bit to let everyone know that this 1568 * connection is ready for I/O 1569 */ 1570 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags); 1571 atomic_inc(&qedf->num_offloads); 1572 1573 break; 1574 case RPORT_EV_LOGO: 1575 case RPORT_EV_FAILED: 1576 case RPORT_EV_STOP: 1577 port_id = rdata->ids.port_id; 1578 if (port_id == FC_FID_DIR_SERV) 1579 break; 1580 1581 if (rdata->spp_type != FC_TYPE_FCP) { 1582 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1583 "No action since spp type isn't FCP\n"); 1584 break; 1585 } 1586 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1587 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1588 "Not FCP target so no action\n"); 1589 break; 1590 } 1591 1592 if (!rport) { 1593 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1594 "port_id=%x - rport notcreated Yet!!\n", port_id); 1595 break; 1596 } 1597 rp = rport->dd_data; 1598 /* 1599 * Perform session upload. Note that rdata->peers is already 1600 * removed from disc->rports list before we get this event. 1601 */ 1602 fcport = (struct qedf_rport *)&rp[1]; 1603 1604 spin_lock_irqsave(&fcport->rport_lock, flags); 1605 /* Only free this fcport if it is offloaded already */ 1606 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) && 1607 !test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1608 &fcport->flags)) { 1609 set_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1610 &fcport->flags); 1611 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1612 qedf_cleanup_fcport(qedf, fcport); 1613 /* 1614 * Remove fcport to list of qedf_ctx list of offloaded 1615 * ports 1616 */ 1617 spin_lock_irqsave(&qedf->hba_lock, flags); 1618 list_del_rcu(&fcport->peers); 1619 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1620 1621 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1622 &fcport->flags); 1623 atomic_dec(&qedf->num_offloads); 1624 } else { 1625 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1626 } 1627 break; 1628 1629 case RPORT_EV_NONE: 1630 break; 1631 } 1632 } 1633 1634 static void qedf_abort_io(struct fc_lport *lport) 1635 { 1636 /* NO-OP but need to fill in the template */ 1637 } 1638 1639 static void qedf_fcp_cleanup(struct fc_lport *lport) 1640 { 1641 /* 1642 * NO-OP but need to fill in template to prevent a NULL 1643 * function pointer dereference during link down. I/Os 1644 * will be flushed when port is uploaded. 1645 */ 1646 } 1647 1648 static struct libfc_function_template qedf_lport_template = { 1649 .frame_send = qedf_xmit, 1650 .fcp_abort_io = qedf_abort_io, 1651 .fcp_cleanup = qedf_fcp_cleanup, 1652 .rport_event_callback = qedf_rport_event_handler, 1653 .elsct_send = qedf_elsct_send, 1654 }; 1655 1656 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf) 1657 { 1658 fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO); 1659 1660 qedf->ctlr.send = qedf_fip_send; 1661 qedf->ctlr.get_src_addr = qedf_get_src_mac; 1662 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac); 1663 } 1664 1665 static void qedf_setup_fdmi(struct qedf_ctx *qedf) 1666 { 1667 struct fc_lport *lport = qedf->lport; 1668 u8 buf[8]; 1669 int pos; 1670 uint32_t i; 1671 1672 /* 1673 * fdmi_enabled needs to be set for libfc 1674 * to execute FDMI registration 1675 */ 1676 lport->fdmi_enabled = 1; 1677 1678 /* 1679 * Setup the necessary fc_host attributes to that will be used to fill 1680 * in the FDMI information. 1681 */ 1682 1683 /* Get the PCI-e Device Serial Number Capability */ 1684 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN); 1685 if (pos) { 1686 pos += 4; 1687 for (i = 0; i < 8; i++) 1688 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]); 1689 1690 snprintf(fc_host_serial_number(lport->host), 1691 FC_SERIAL_NUMBER_SIZE, 1692 "%02X%02X%02X%02X%02X%02X%02X%02X", 1693 buf[7], buf[6], buf[5], buf[4], 1694 buf[3], buf[2], buf[1], buf[0]); 1695 } else 1696 snprintf(fc_host_serial_number(lport->host), 1697 FC_SERIAL_NUMBER_SIZE, "Unknown"); 1698 1699 snprintf(fc_host_manufacturer(lport->host), 1700 FC_SERIAL_NUMBER_SIZE, "%s", "Marvell Semiconductor Inc."); 1701 1702 if (qedf->pdev->device == QL45xxx) { 1703 snprintf(fc_host_model(lport->host), 1704 FC_SYMBOLIC_NAME_SIZE, "%s", "QL45xxx"); 1705 1706 snprintf(fc_host_model_description(lport->host), 1707 FC_SYMBOLIC_NAME_SIZE, "%s", 1708 "Marvell FastLinQ QL45xxx FCoE Adapter"); 1709 } 1710 1711 if (qedf->pdev->device == QL41xxx) { 1712 snprintf(fc_host_model(lport->host), 1713 FC_SYMBOLIC_NAME_SIZE, "%s", "QL41xxx"); 1714 1715 snprintf(fc_host_model_description(lport->host), 1716 FC_SYMBOLIC_NAME_SIZE, "%s", 1717 "Marvell FastLinQ QL41xxx FCoE Adapter"); 1718 } 1719 1720 snprintf(fc_host_hardware_version(lport->host), 1721 FC_VERSION_STRING_SIZE, "Rev %d", qedf->pdev->revision); 1722 1723 snprintf(fc_host_driver_version(lport->host), 1724 FC_VERSION_STRING_SIZE, "%s", QEDF_VERSION); 1725 1726 snprintf(fc_host_firmware_version(lport->host), 1727 FC_VERSION_STRING_SIZE, "%d.%d.%d.%d", 1728 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 1729 FW_ENGINEERING_VERSION); 1730 1731 snprintf(fc_host_vendor_identifier(lport->host), 1732 FC_VENDOR_IDENTIFIER, "%s", "Marvell"); 1733 1734 } 1735 1736 static int qedf_lport_setup(struct qedf_ctx *qedf) 1737 { 1738 struct fc_lport *lport = qedf->lport; 1739 1740 lport->link_up = 0; 1741 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1742 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1743 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1744 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1745 lport->boot_time = jiffies; 1746 lport->e_d_tov = 2 * 1000; 1747 lport->r_a_tov = 10 * 1000; 1748 1749 /* Set NPIV support */ 1750 lport->does_npiv = 1; 1751 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV; 1752 1753 fc_set_wwnn(lport, qedf->wwnn); 1754 fc_set_wwpn(lport, qedf->wwpn); 1755 1756 if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) { 1757 QEDF_ERR(&qedf->dbg_ctx, 1758 "fcoe_libfc_config failed.\n"); 1759 return -ENOMEM; 1760 } 1761 1762 /* Allocate the exchange manager */ 1763 fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS, 1764 0xfffe, NULL); 1765 1766 if (fc_lport_init_stats(lport)) 1767 return -ENOMEM; 1768 1769 /* Finish lport config */ 1770 fc_lport_config(lport); 1771 1772 /* Set max frame size */ 1773 fc_set_mfs(lport, QEDF_MFS); 1774 fc_host_maxframe_size(lport->host) = lport->mfs; 1775 1776 /* Set default dev_loss_tmo based on module parameter */ 1777 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo; 1778 1779 /* Set symbolic node name */ 1780 if (qedf->pdev->device == QL45xxx) 1781 snprintf(fc_host_symbolic_name(lport->host), 256, 1782 "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION); 1783 1784 if (qedf->pdev->device == QL41xxx) 1785 snprintf(fc_host_symbolic_name(lport->host), 256, 1786 "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION); 1787 1788 qedf_setup_fdmi(qedf); 1789 1790 return 0; 1791 } 1792 1793 /* 1794 * NPIV functions 1795 */ 1796 1797 static int qedf_vport_libfc_config(struct fc_vport *vport, 1798 struct fc_lport *lport) 1799 { 1800 lport->link_up = 0; 1801 lport->qfull = 0; 1802 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1803 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1804 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1805 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1806 lport->boot_time = jiffies; 1807 lport->e_d_tov = 2 * 1000; 1808 lport->r_a_tov = 10 * 1000; 1809 lport->does_npiv = 1; /* Temporary until we add NPIV support */ 1810 1811 /* Allocate stats for vport */ 1812 if (fc_lport_init_stats(lport)) 1813 return -ENOMEM; 1814 1815 /* Finish lport config */ 1816 fc_lport_config(lport); 1817 1818 /* offload related configuration */ 1819 lport->crc_offload = 0; 1820 lport->seq_offload = 0; 1821 lport->lro_enabled = 0; 1822 lport->lro_xid = 0; 1823 lport->lso_max = 0; 1824 1825 return 0; 1826 } 1827 1828 static int qedf_vport_create(struct fc_vport *vport, bool disabled) 1829 { 1830 struct Scsi_Host *shost = vport_to_shost(vport); 1831 struct fc_lport *n_port = shost_priv(shost); 1832 struct fc_lport *vn_port; 1833 struct qedf_ctx *base_qedf = lport_priv(n_port); 1834 struct qedf_ctx *vport_qedf; 1835 1836 char buf[32]; 1837 int rc = 0; 1838 1839 rc = fcoe_validate_vport_create(vport); 1840 if (rc) { 1841 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1842 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, " 1843 "WWPN (0x%s) already exists.\n", buf); 1844 return rc; 1845 } 1846 1847 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) { 1848 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport " 1849 "because link is not up.\n"); 1850 return -EIO; 1851 } 1852 1853 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx)); 1854 if (!vn_port) { 1855 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport " 1856 "for vport.\n"); 1857 return -ENOMEM; 1858 } 1859 1860 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1861 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n", 1862 buf); 1863 1864 /* Copy some fields from base_qedf */ 1865 vport_qedf = lport_priv(vn_port); 1866 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx)); 1867 1868 /* Set qedf data specific to this vport */ 1869 vport_qedf->lport = vn_port; 1870 /* Use same hba_lock as base_qedf */ 1871 vport_qedf->hba_lock = base_qedf->hba_lock; 1872 vport_qedf->pdev = base_qedf->pdev; 1873 vport_qedf->cmd_mgr = base_qedf->cmd_mgr; 1874 init_completion(&vport_qedf->flogi_compl); 1875 INIT_LIST_HEAD(&vport_qedf->fcports); 1876 INIT_DELAYED_WORK(&vport_qedf->stag_work, qedf_stag_change_work); 1877 1878 rc = qedf_vport_libfc_config(vport, vn_port); 1879 if (rc) { 1880 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory " 1881 "for lport stats.\n"); 1882 goto err; 1883 } 1884 1885 fc_set_wwnn(vn_port, vport->node_name); 1886 fc_set_wwpn(vn_port, vport->port_name); 1887 vport_qedf->wwnn = vn_port->wwnn; 1888 vport_qedf->wwpn = vn_port->wwpn; 1889 1890 vn_port->host->transportt = qedf_fc_vport_transport_template; 1891 vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS; 1892 vn_port->host->max_lun = qedf_max_lun; 1893 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD; 1894 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN; 1895 vn_port->host->max_id = QEDF_MAX_SESSIONS; 1896 1897 rc = scsi_add_host(vn_port->host, &vport->dev); 1898 if (rc) { 1899 QEDF_WARN(&base_qedf->dbg_ctx, 1900 "Error adding Scsi_Host rc=0x%x.\n", rc); 1901 goto err; 1902 } 1903 1904 /* Set default dev_loss_tmo based on module parameter */ 1905 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo; 1906 1907 /* Init libfc stuffs */ 1908 memcpy(&vn_port->tt, &qedf_lport_template, 1909 sizeof(qedf_lport_template)); 1910 fc_exch_init(vn_port); 1911 fc_elsct_init(vn_port); 1912 fc_lport_init(vn_port); 1913 fc_disc_init(vn_port); 1914 fc_disc_config(vn_port, vn_port); 1915 1916 1917 /* Allocate the exchange manager */ 1918 shost = vport_to_shost(vport); 1919 n_port = shost_priv(shost); 1920 fc_exch_mgr_list_clone(n_port, vn_port); 1921 1922 /* Set max frame size */ 1923 fc_set_mfs(vn_port, QEDF_MFS); 1924 1925 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN; 1926 1927 if (disabled) { 1928 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1929 } else { 1930 vn_port->boot_time = jiffies; 1931 fc_fabric_login(vn_port); 1932 fc_vport_setlink(vn_port); 1933 } 1934 1935 /* Set symbolic node name */ 1936 if (base_qedf->pdev->device == QL45xxx) 1937 snprintf(fc_host_symbolic_name(vn_port->host), 256, 1938 "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION); 1939 1940 if (base_qedf->pdev->device == QL41xxx) 1941 snprintf(fc_host_symbolic_name(vn_port->host), 256, 1942 "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION); 1943 1944 /* Set supported speed */ 1945 fc_host_supported_speeds(vn_port->host) = n_port->link_supported_speeds; 1946 1947 /* Set speed */ 1948 vn_port->link_speed = n_port->link_speed; 1949 1950 /* Set port type */ 1951 fc_host_port_type(vn_port->host) = FC_PORTTYPE_NPIV; 1952 1953 /* Set maxframe size */ 1954 fc_host_maxframe_size(vn_port->host) = n_port->mfs; 1955 1956 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n", 1957 vn_port); 1958 1959 /* Set up debug context for vport */ 1960 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no; 1961 vport_qedf->dbg_ctx.pdev = base_qedf->pdev; 1962 1963 return 0; 1964 1965 err: 1966 scsi_host_put(vn_port->host); 1967 return rc; 1968 } 1969 1970 static int qedf_vport_destroy(struct fc_vport *vport) 1971 { 1972 struct Scsi_Host *shost = vport_to_shost(vport); 1973 struct fc_lport *n_port = shost_priv(shost); 1974 struct fc_lport *vn_port = vport->dd_data; 1975 struct qedf_ctx *qedf = lport_priv(vn_port); 1976 1977 if (!qedf) { 1978 QEDF_ERR(NULL, "qedf is NULL.\n"); 1979 goto out; 1980 } 1981 1982 /* Set unloading bit on vport qedf_ctx to prevent more I/O */ 1983 set_bit(QEDF_UNLOADING, &qedf->flags); 1984 1985 mutex_lock(&n_port->lp_mutex); 1986 list_del(&vn_port->list); 1987 mutex_unlock(&n_port->lp_mutex); 1988 1989 fc_fabric_logoff(vn_port); 1990 fc_lport_destroy(vn_port); 1991 1992 /* Detach from scsi-ml */ 1993 fc_remove_host(vn_port->host); 1994 scsi_remove_host(vn_port->host); 1995 1996 /* 1997 * Only try to release the exchange manager if the vn_port 1998 * configuration is complete. 1999 */ 2000 if (vn_port->state == LPORT_ST_READY) 2001 fc_exch_mgr_free(vn_port); 2002 2003 /* Free memory used by statistical counters */ 2004 fc_lport_free_stats(vn_port); 2005 2006 /* Release Scsi_Host */ 2007 scsi_host_put(vn_port->host); 2008 2009 out: 2010 return 0; 2011 } 2012 2013 static int qedf_vport_disable(struct fc_vport *vport, bool disable) 2014 { 2015 struct fc_lport *lport = vport->dd_data; 2016 2017 if (disable) { 2018 fc_vport_set_state(vport, FC_VPORT_DISABLED); 2019 fc_fabric_logoff(lport); 2020 } else { 2021 lport->boot_time = jiffies; 2022 fc_fabric_login(lport); 2023 fc_vport_setlink(lport); 2024 } 2025 return 0; 2026 } 2027 2028 /* 2029 * During removal we need to wait for all the vports associated with a port 2030 * to be destroyed so we avoid a race condition where libfc is still trying 2031 * to reap vports while the driver remove function has already reaped the 2032 * driver contexts associated with the physical port. 2033 */ 2034 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf) 2035 { 2036 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host); 2037 2038 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 2039 "Entered.\n"); 2040 while (fc_host->npiv_vports_inuse > 0) { 2041 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 2042 "Waiting for all vports to be reaped.\n"); 2043 msleep(1000); 2044 } 2045 } 2046 2047 /** 2048 * qedf_fcoe_reset - Resets the fcoe 2049 * 2050 * @shost: shost the reset is from 2051 * 2052 * Returns: always 0 2053 */ 2054 static int qedf_fcoe_reset(struct Scsi_Host *shost) 2055 { 2056 struct fc_lport *lport = shost_priv(shost); 2057 2058 qedf_ctx_soft_reset(lport); 2059 return 0; 2060 } 2061 2062 static void qedf_get_host_port_id(struct Scsi_Host *shost) 2063 { 2064 struct fc_lport *lport = shost_priv(shost); 2065 2066 fc_host_port_id(shost) = lport->port_id; 2067 } 2068 2069 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host 2070 *shost) 2071 { 2072 struct fc_host_statistics *qedf_stats; 2073 struct fc_lport *lport = shost_priv(shost); 2074 struct qedf_ctx *qedf = lport_priv(lport); 2075 struct qed_fcoe_stats *fw_fcoe_stats; 2076 2077 qedf_stats = fc_get_host_stats(shost); 2078 2079 /* We don't collect offload stats for specific NPIV ports */ 2080 if (lport->vport) 2081 goto out; 2082 2083 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL); 2084 if (!fw_fcoe_stats) { 2085 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for " 2086 "fw_fcoe_stats.\n"); 2087 goto out; 2088 } 2089 2090 mutex_lock(&qedf->stats_mutex); 2091 2092 /* Query firmware for offload stats */ 2093 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats); 2094 2095 /* 2096 * The expectation is that we add our offload stats to the stats 2097 * being maintained by libfc each time the fc_get_host_status callback 2098 * is invoked. The additions are not carried over for each call to 2099 * the fc_get_host_stats callback. 2100 */ 2101 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt + 2102 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt + 2103 fw_fcoe_stats->fcoe_tx_other_pkt_cnt; 2104 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt + 2105 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt + 2106 fw_fcoe_stats->fcoe_rx_other_pkt_cnt; 2107 qedf_stats->fcp_input_megabytes += 2108 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000); 2109 qedf_stats->fcp_output_megabytes += 2110 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000); 2111 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4; 2112 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4; 2113 qedf_stats->invalid_crc_count += 2114 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt; 2115 qedf_stats->dumped_frames = 2116 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 2117 qedf_stats->error_frames += 2118 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 2119 qedf_stats->fcp_input_requests += qedf->input_requests; 2120 qedf_stats->fcp_output_requests += qedf->output_requests; 2121 qedf_stats->fcp_control_requests += qedf->control_requests; 2122 qedf_stats->fcp_packet_aborts += qedf->packet_aborts; 2123 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures; 2124 2125 mutex_unlock(&qedf->stats_mutex); 2126 kfree(fw_fcoe_stats); 2127 out: 2128 return qedf_stats; 2129 } 2130 2131 static struct fc_function_template qedf_fc_transport_fn = { 2132 .show_host_node_name = 1, 2133 .show_host_port_name = 1, 2134 .show_host_supported_classes = 1, 2135 .show_host_supported_fc4s = 1, 2136 .show_host_active_fc4s = 1, 2137 .show_host_maxframe_size = 1, 2138 2139 .get_host_port_id = qedf_get_host_port_id, 2140 .show_host_port_id = 1, 2141 .show_host_supported_speeds = 1, 2142 .get_host_speed = fc_get_host_speed, 2143 .show_host_speed = 1, 2144 .show_host_port_type = 1, 2145 .get_host_port_state = fc_get_host_port_state, 2146 .show_host_port_state = 1, 2147 .show_host_symbolic_name = 1, 2148 2149 /* 2150 * Tell FC transport to allocate enough space to store the backpointer 2151 * for the associate qedf_rport struct. 2152 */ 2153 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2154 sizeof(struct qedf_rport)), 2155 .show_rport_maxframe_size = 1, 2156 .show_rport_supported_classes = 1, 2157 .show_host_fabric_name = 1, 2158 .show_starget_node_name = 1, 2159 .show_starget_port_name = 1, 2160 .show_starget_port_id = 1, 2161 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2162 .show_rport_dev_loss_tmo = 1, 2163 .get_fc_host_stats = qedf_fc_get_host_stats, 2164 .issue_fc_host_lip = qedf_fcoe_reset, 2165 .vport_create = qedf_vport_create, 2166 .vport_delete = qedf_vport_destroy, 2167 .vport_disable = qedf_vport_disable, 2168 .bsg_request = fc_lport_bsg_request, 2169 }; 2170 2171 static struct fc_function_template qedf_fc_vport_transport_fn = { 2172 .show_host_node_name = 1, 2173 .show_host_port_name = 1, 2174 .show_host_supported_classes = 1, 2175 .show_host_supported_fc4s = 1, 2176 .show_host_active_fc4s = 1, 2177 .show_host_maxframe_size = 1, 2178 .show_host_port_id = 1, 2179 .show_host_supported_speeds = 1, 2180 .get_host_speed = fc_get_host_speed, 2181 .show_host_speed = 1, 2182 .show_host_port_type = 1, 2183 .get_host_port_state = fc_get_host_port_state, 2184 .show_host_port_state = 1, 2185 .show_host_symbolic_name = 1, 2186 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2187 sizeof(struct qedf_rport)), 2188 .show_rport_maxframe_size = 1, 2189 .show_rport_supported_classes = 1, 2190 .show_host_fabric_name = 1, 2191 .show_starget_node_name = 1, 2192 .show_starget_port_name = 1, 2193 .show_starget_port_id = 1, 2194 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2195 .show_rport_dev_loss_tmo = 1, 2196 .get_fc_host_stats = fc_get_host_stats, 2197 .issue_fc_host_lip = qedf_fcoe_reset, 2198 .bsg_request = fc_lport_bsg_request, 2199 }; 2200 2201 static bool qedf_fp_has_work(struct qedf_fastpath *fp) 2202 { 2203 struct qedf_ctx *qedf = fp->qedf; 2204 struct global_queue *que; 2205 struct qed_sb_info *sb_info = fp->sb_info; 2206 struct status_block *sb = sb_info->sb_virt; 2207 u16 prod_idx; 2208 2209 /* Get the pointer to the global CQ this completion is on */ 2210 que = qedf->global_queues[fp->sb_id]; 2211 2212 /* Be sure all responses have been written to PI */ 2213 rmb(); 2214 2215 /* Get the current firmware producer index */ 2216 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2217 2218 return (que->cq_prod_idx != prod_idx); 2219 } 2220 2221 /* 2222 * Interrupt handler code. 2223 */ 2224 2225 /* Process completion queue and copy CQE contents for deferred processesing 2226 * 2227 * Return true if we should wake the I/O thread, false if not. 2228 */ 2229 static bool qedf_process_completions(struct qedf_fastpath *fp) 2230 { 2231 struct qedf_ctx *qedf = fp->qedf; 2232 struct qed_sb_info *sb_info = fp->sb_info; 2233 struct status_block *sb = sb_info->sb_virt; 2234 struct global_queue *que; 2235 u16 prod_idx; 2236 struct fcoe_cqe *cqe; 2237 struct qedf_io_work *io_work; 2238 unsigned int cpu; 2239 struct qedf_ioreq *io_req = NULL; 2240 u16 xid; 2241 u16 new_cqes; 2242 u32 comp_type; 2243 2244 /* Get the current firmware producer index */ 2245 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2246 2247 /* Get the pointer to the global CQ this completion is on */ 2248 que = qedf->global_queues[fp->sb_id]; 2249 2250 /* Calculate the amount of new elements since last processing */ 2251 new_cqes = (prod_idx >= que->cq_prod_idx) ? 2252 (prod_idx - que->cq_prod_idx) : 2253 0x10000 - que->cq_prod_idx + prod_idx; 2254 2255 /* Save producer index */ 2256 que->cq_prod_idx = prod_idx; 2257 2258 while (new_cqes) { 2259 fp->completions++; 2260 cqe = &que->cq[que->cq_cons_idx]; 2261 2262 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2263 FCOE_CQE_CQE_TYPE_MASK; 2264 2265 /* 2266 * Process unsolicited CQEs directly in the interrupt handler 2267 * sine we need the fastpath ID 2268 */ 2269 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) { 2270 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL, 2271 "Unsolicated CQE.\n"); 2272 qedf_process_unsol_compl(qedf, fp->sb_id, cqe); 2273 /* 2274 * Don't add a work list item. Increment consumer 2275 * consumer index and move on. 2276 */ 2277 goto inc_idx; 2278 } 2279 2280 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2281 io_req = &qedf->cmd_mgr->cmds[xid]; 2282 2283 /* 2284 * Figure out which percpu thread we should queue this I/O 2285 * on. 2286 */ 2287 if (!io_req) 2288 /* If there is not io_req assocated with this CQE 2289 * just queue it on CPU 0 2290 */ 2291 cpu = 0; 2292 else { 2293 cpu = io_req->cpu; 2294 io_req->int_cpu = smp_processor_id(); 2295 } 2296 2297 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC); 2298 if (!io_work) { 2299 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate " 2300 "work for I/O completion.\n"); 2301 continue; 2302 } 2303 memset(io_work, 0, sizeof(struct qedf_io_work)); 2304 2305 INIT_WORK(&io_work->work, qedf_fp_io_handler); 2306 2307 /* Copy contents of CQE for deferred processing */ 2308 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe)); 2309 2310 io_work->qedf = fp->qedf; 2311 io_work->fp = NULL; /* Only used for unsolicited frames */ 2312 2313 queue_work_on(cpu, qedf_io_wq, &io_work->work); 2314 2315 inc_idx: 2316 que->cq_cons_idx++; 2317 if (que->cq_cons_idx == fp->cq_num_entries) 2318 que->cq_cons_idx = 0; 2319 new_cqes--; 2320 } 2321 2322 return true; 2323 } 2324 2325 2326 /* MSI-X fastpath handler code */ 2327 static irqreturn_t qedf_msix_handler(int irq, void *dev_id) 2328 { 2329 struct qedf_fastpath *fp = dev_id; 2330 2331 if (!fp) { 2332 QEDF_ERR(NULL, "fp is null.\n"); 2333 return IRQ_HANDLED; 2334 } 2335 if (!fp->sb_info) { 2336 QEDF_ERR(NULL, "fp->sb_info in null."); 2337 return IRQ_HANDLED; 2338 } 2339 2340 /* 2341 * Disable interrupts for this status block while we process new 2342 * completions 2343 */ 2344 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/); 2345 2346 while (1) { 2347 qedf_process_completions(fp); 2348 2349 if (qedf_fp_has_work(fp) == 0) { 2350 /* Update the sb information */ 2351 qed_sb_update_sb_idx(fp->sb_info); 2352 2353 /* Check for more work */ 2354 rmb(); 2355 2356 if (qedf_fp_has_work(fp) == 0) { 2357 /* Re-enable interrupts */ 2358 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 2359 return IRQ_HANDLED; 2360 } 2361 } 2362 } 2363 2364 /* Do we ever want to break out of above loop? */ 2365 return IRQ_HANDLED; 2366 } 2367 2368 /* simd handler for MSI/INTa */ 2369 static void qedf_simd_int_handler(void *cookie) 2370 { 2371 /* Cookie is qedf_ctx struct */ 2372 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2373 2374 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf); 2375 } 2376 2377 #define QEDF_SIMD_HANDLER_NUM 0 2378 static void qedf_sync_free_irqs(struct qedf_ctx *qedf) 2379 { 2380 int i; 2381 u16 vector_idx = 0; 2382 u32 vector; 2383 2384 if (qedf->int_info.msix_cnt) { 2385 for (i = 0; i < qedf->int_info.used_cnt; i++) { 2386 vector_idx = i * qedf->dev_info.common.num_hwfns + 2387 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2388 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2389 "Freeing IRQ #%d vector_idx=%d.\n", 2390 i, vector_idx); 2391 vector = qedf->int_info.msix[vector_idx].vector; 2392 synchronize_irq(vector); 2393 irq_set_affinity_hint(vector, NULL); 2394 irq_set_affinity_notifier(vector, NULL); 2395 free_irq(vector, &qedf->fp_array[i]); 2396 } 2397 } else 2398 qed_ops->common->simd_handler_clean(qedf->cdev, 2399 QEDF_SIMD_HANDLER_NUM); 2400 2401 qedf->int_info.used_cnt = 0; 2402 qed_ops->common->set_fp_int(qedf->cdev, 0); 2403 } 2404 2405 static int qedf_request_msix_irq(struct qedf_ctx *qedf) 2406 { 2407 int i, rc, cpu; 2408 u16 vector_idx = 0; 2409 u32 vector; 2410 2411 cpu = cpumask_first(cpu_online_mask); 2412 for (i = 0; i < qedf->num_queues; i++) { 2413 vector_idx = i * qedf->dev_info.common.num_hwfns + 2414 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2415 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2416 "Requesting IRQ #%d vector_idx=%d.\n", 2417 i, vector_idx); 2418 vector = qedf->int_info.msix[vector_idx].vector; 2419 rc = request_irq(vector, qedf_msix_handler, 0, "qedf", 2420 &qedf->fp_array[i]); 2421 2422 if (rc) { 2423 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n"); 2424 qedf_sync_free_irqs(qedf); 2425 return rc; 2426 } 2427 2428 qedf->int_info.used_cnt++; 2429 rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu)); 2430 cpu = cpumask_next(cpu, cpu_online_mask); 2431 } 2432 2433 return 0; 2434 } 2435 2436 static int qedf_setup_int(struct qedf_ctx *qedf) 2437 { 2438 int rc = 0; 2439 2440 /* 2441 * Learn interrupt configuration 2442 */ 2443 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus()); 2444 if (rc <= 0) 2445 return 0; 2446 2447 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info); 2448 if (rc) 2449 return 0; 2450 2451 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = " 2452 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt, 2453 num_online_cpus()); 2454 2455 if (qedf->int_info.msix_cnt) 2456 return qedf_request_msix_irq(qedf); 2457 2458 qed_ops->common->simd_handler_config(qedf->cdev, &qedf, 2459 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler); 2460 qedf->int_info.used_cnt = 1; 2461 2462 QEDF_ERR(&qedf->dbg_ctx, 2463 "Cannot load driver due to a lack of MSI-X vectors.\n"); 2464 return -EINVAL; 2465 } 2466 2467 /* Main function for libfc frame reception */ 2468 static void qedf_recv_frame(struct qedf_ctx *qedf, 2469 struct sk_buff *skb) 2470 { 2471 u32 fr_len; 2472 struct fc_lport *lport; 2473 struct fc_frame_header *fh; 2474 struct fcoe_crc_eof crc_eof; 2475 struct fc_frame *fp; 2476 u8 *mac = NULL; 2477 u8 *dest_mac = NULL; 2478 struct fcoe_hdr *hp; 2479 struct qedf_rport *fcport; 2480 struct fc_lport *vn_port; 2481 u32 f_ctl; 2482 2483 lport = qedf->lport; 2484 if (lport == NULL || lport->state == LPORT_ST_DISABLED) { 2485 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n"); 2486 kfree_skb(skb); 2487 return; 2488 } 2489 2490 if (skb_is_nonlinear(skb)) 2491 skb_linearize(skb); 2492 mac = eth_hdr(skb)->h_source; 2493 dest_mac = eth_hdr(skb)->h_dest; 2494 2495 /* Pull the header */ 2496 hp = (struct fcoe_hdr *)skb->data; 2497 fh = (struct fc_frame_header *) skb_transport_header(skb); 2498 skb_pull(skb, sizeof(struct fcoe_hdr)); 2499 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 2500 2501 fp = (struct fc_frame *)skb; 2502 fc_frame_init(fp); 2503 fr_dev(fp) = lport; 2504 fr_sof(fp) = hp->fcoe_sof; 2505 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 2506 QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n"); 2507 kfree_skb(skb); 2508 return; 2509 } 2510 fr_eof(fp) = crc_eof.fcoe_eof; 2511 fr_crc(fp) = crc_eof.fcoe_crc32; 2512 if (pskb_trim(skb, fr_len)) { 2513 QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n"); 2514 kfree_skb(skb); 2515 return; 2516 } 2517 2518 fh = fc_frame_header_get(fp); 2519 2520 /* 2521 * Invalid frame filters. 2522 */ 2523 2524 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 2525 fh->fh_type == FC_TYPE_FCP) { 2526 /* Drop FCP data. We dont this in L2 path */ 2527 kfree_skb(skb); 2528 return; 2529 } 2530 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 2531 fh->fh_type == FC_TYPE_ELS) { 2532 switch (fc_frame_payload_op(fp)) { 2533 case ELS_LOGO: 2534 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 2535 /* drop non-FIP LOGO */ 2536 kfree_skb(skb); 2537 return; 2538 } 2539 break; 2540 } 2541 } 2542 2543 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 2544 /* Drop incoming ABTS */ 2545 kfree_skb(skb); 2546 return; 2547 } 2548 2549 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { 2550 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2551 "FC frame d_id mismatch with MAC %pM.\n", dest_mac); 2552 kfree_skb(skb); 2553 return; 2554 } 2555 2556 if (qedf->ctlr.state) { 2557 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) { 2558 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2559 "Wrong source address: mac:%pM dest_addr:%pM.\n", 2560 mac, qedf->ctlr.dest_addr); 2561 kfree_skb(skb); 2562 return; 2563 } 2564 } 2565 2566 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 2567 2568 /* 2569 * If the destination ID from the frame header does not match what we 2570 * have on record for lport and the search for a NPIV port came up 2571 * empty then this is not addressed to our port so simply drop it. 2572 */ 2573 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { 2574 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2575 "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n", 2576 lport->port_id, ntoh24(fh->fh_d_id)); 2577 kfree_skb(skb); 2578 return; 2579 } 2580 2581 f_ctl = ntoh24(fh->fh_f_ctl); 2582 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) && 2583 (f_ctl & FC_FC_EX_CTX)) { 2584 /* Drop incoming ABTS response that has both SEQ/EX CTX set */ 2585 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2586 "Dropping ABTS response as both SEQ/EX CTX set.\n"); 2587 kfree_skb(skb); 2588 return; 2589 } 2590 2591 /* 2592 * If a connection is uploading, drop incoming FCoE frames as there 2593 * is a small window where we could try to return a frame while libfc 2594 * is trying to clean things up. 2595 */ 2596 2597 /* Get fcport associated with d_id if it exists */ 2598 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 2599 2600 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 2601 &fcport->flags)) { 2602 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2603 "Connection uploading, dropping fp=%p.\n", fp); 2604 kfree_skb(skb); 2605 return; 2606 } 2607 2608 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: " 2609 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp, 2610 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, 2611 fh->fh_type); 2612 if (qedf_dump_frames) 2613 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 2614 1, skb->data, skb->len, false); 2615 fc_exch_recv(lport, fp); 2616 } 2617 2618 static void qedf_ll2_process_skb(struct work_struct *work) 2619 { 2620 struct qedf_skb_work *skb_work = 2621 container_of(work, struct qedf_skb_work, work); 2622 struct qedf_ctx *qedf = skb_work->qedf; 2623 struct sk_buff *skb = skb_work->skb; 2624 struct ethhdr *eh; 2625 2626 if (!qedf) { 2627 QEDF_ERR(NULL, "qedf is NULL\n"); 2628 goto err_out; 2629 } 2630 2631 eh = (struct ethhdr *)skb->data; 2632 2633 /* Undo VLAN encapsulation */ 2634 if (eh->h_proto == htons(ETH_P_8021Q)) { 2635 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); 2636 eh = skb_pull(skb, VLAN_HLEN); 2637 skb_reset_mac_header(skb); 2638 } 2639 2640 /* 2641 * Process either a FIP frame or FCoE frame based on the 2642 * protocol value. If it's not either just drop the 2643 * frame. 2644 */ 2645 if (eh->h_proto == htons(ETH_P_FIP)) { 2646 qedf_fip_recv(qedf, skb); 2647 goto out; 2648 } else if (eh->h_proto == htons(ETH_P_FCOE)) { 2649 __skb_pull(skb, ETH_HLEN); 2650 qedf_recv_frame(qedf, skb); 2651 goto out; 2652 } else 2653 goto err_out; 2654 2655 err_out: 2656 kfree_skb(skb); 2657 out: 2658 kfree(skb_work); 2659 return; 2660 } 2661 2662 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb, 2663 u32 arg1, u32 arg2) 2664 { 2665 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2666 struct qedf_skb_work *skb_work; 2667 2668 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 2669 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2670 "Dropping frame as link state is down.\n"); 2671 kfree_skb(skb); 2672 return 0; 2673 } 2674 2675 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC); 2676 if (!skb_work) { 2677 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so " 2678 "dropping frame.\n"); 2679 kfree_skb(skb); 2680 return 0; 2681 } 2682 2683 INIT_WORK(&skb_work->work, qedf_ll2_process_skb); 2684 skb_work->skb = skb; 2685 skb_work->qedf = qedf; 2686 queue_work(qedf->ll2_recv_wq, &skb_work->work); 2687 2688 return 0; 2689 } 2690 2691 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = { 2692 .rx_cb = qedf_ll2_rx, 2693 .tx_cb = NULL, 2694 }; 2695 2696 /* Main thread to process I/O completions */ 2697 void qedf_fp_io_handler(struct work_struct *work) 2698 { 2699 struct qedf_io_work *io_work = 2700 container_of(work, struct qedf_io_work, work); 2701 u32 comp_type; 2702 2703 /* 2704 * Deferred part of unsolicited CQE sends 2705 * frame to libfc. 2706 */ 2707 comp_type = (io_work->cqe.cqe_data >> 2708 FCOE_CQE_CQE_TYPE_SHIFT) & 2709 FCOE_CQE_CQE_TYPE_MASK; 2710 if (comp_type == FCOE_UNSOLIC_CQE_TYPE && 2711 io_work->fp) 2712 fc_exch_recv(io_work->qedf->lport, io_work->fp); 2713 else 2714 qedf_process_cqe(io_work->qedf, &io_work->cqe); 2715 2716 kfree(io_work); 2717 } 2718 2719 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf, 2720 struct qed_sb_info *sb_info, u16 sb_id) 2721 { 2722 struct status_block *sb_virt; 2723 dma_addr_t sb_phys; 2724 int ret; 2725 2726 sb_virt = dma_alloc_coherent(&qedf->pdev->dev, 2727 sizeof(struct status_block), &sb_phys, GFP_KERNEL); 2728 2729 if (!sb_virt) { 2730 QEDF_ERR(&qedf->dbg_ctx, 2731 "Status block allocation failed for id = %d.\n", 2732 sb_id); 2733 return -ENOMEM; 2734 } 2735 2736 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys, 2737 sb_id, QED_SB_TYPE_STORAGE); 2738 2739 if (ret) { 2740 QEDF_ERR(&qedf->dbg_ctx, 2741 "Status block initialization failed (0x%x) for id = %d.\n", 2742 ret, sb_id); 2743 return ret; 2744 } 2745 2746 return 0; 2747 } 2748 2749 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info) 2750 { 2751 if (sb_info->sb_virt) 2752 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt), 2753 (void *)sb_info->sb_virt, sb_info->sb_phys); 2754 } 2755 2756 static void qedf_destroy_sb(struct qedf_ctx *qedf) 2757 { 2758 int id; 2759 struct qedf_fastpath *fp = NULL; 2760 2761 for (id = 0; id < qedf->num_queues; id++) { 2762 fp = &(qedf->fp_array[id]); 2763 if (fp->sb_id == QEDF_SB_ID_NULL) 2764 break; 2765 qedf_free_sb(qedf, fp->sb_info); 2766 kfree(fp->sb_info); 2767 } 2768 kfree(qedf->fp_array); 2769 } 2770 2771 static int qedf_prepare_sb(struct qedf_ctx *qedf) 2772 { 2773 int id; 2774 struct qedf_fastpath *fp; 2775 int ret; 2776 2777 qedf->fp_array = 2778 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath), 2779 GFP_KERNEL); 2780 2781 if (!qedf->fp_array) { 2782 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation " 2783 "failed.\n"); 2784 return -ENOMEM; 2785 } 2786 2787 for (id = 0; id < qedf->num_queues; id++) { 2788 fp = &(qedf->fp_array[id]); 2789 fp->sb_id = QEDF_SB_ID_NULL; 2790 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL); 2791 if (!fp->sb_info) { 2792 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct " 2793 "allocation failed.\n"); 2794 goto err; 2795 } 2796 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id); 2797 if (ret) { 2798 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and " 2799 "initialization failed.\n"); 2800 goto err; 2801 } 2802 fp->sb_id = id; 2803 fp->qedf = qedf; 2804 fp->cq_num_entries = 2805 qedf->global_queues[id]->cq_mem_size / 2806 sizeof(struct fcoe_cqe); 2807 } 2808 err: 2809 return 0; 2810 } 2811 2812 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe) 2813 { 2814 u16 xid; 2815 struct qedf_ioreq *io_req; 2816 struct qedf_rport *fcport; 2817 u32 comp_type; 2818 u8 io_comp_type; 2819 unsigned long flags; 2820 2821 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2822 FCOE_CQE_CQE_TYPE_MASK; 2823 2824 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2825 io_req = &qedf->cmd_mgr->cmds[xid]; 2826 2827 /* Completion not for a valid I/O anymore so just return */ 2828 if (!io_req) { 2829 QEDF_ERR(&qedf->dbg_ctx, 2830 "io_req is NULL for xid=0x%x.\n", xid); 2831 return; 2832 } 2833 2834 fcport = io_req->fcport; 2835 2836 if (fcport == NULL) { 2837 QEDF_ERR(&qedf->dbg_ctx, 2838 "fcport is NULL for xid=0x%x io_req=%p.\n", 2839 xid, io_req); 2840 return; 2841 } 2842 2843 /* 2844 * Check that fcport is offloaded. If it isn't then the spinlock 2845 * isn't valid and shouldn't be taken. We should just return. 2846 */ 2847 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 2848 QEDF_ERR(&qedf->dbg_ctx, 2849 "Session not offloaded yet, fcport = %p.\n", fcport); 2850 return; 2851 } 2852 2853 spin_lock_irqsave(&fcport->rport_lock, flags); 2854 io_comp_type = io_req->cmd_type; 2855 spin_unlock_irqrestore(&fcport->rport_lock, flags); 2856 2857 switch (comp_type) { 2858 case FCOE_GOOD_COMPLETION_CQE_TYPE: 2859 atomic_inc(&fcport->free_sqes); 2860 switch (io_comp_type) { 2861 case QEDF_SCSI_CMD: 2862 qedf_scsi_completion(qedf, cqe, io_req); 2863 break; 2864 case QEDF_ELS: 2865 qedf_process_els_compl(qedf, cqe, io_req); 2866 break; 2867 case QEDF_TASK_MGMT_CMD: 2868 qedf_process_tmf_compl(qedf, cqe, io_req); 2869 break; 2870 case QEDF_SEQ_CLEANUP: 2871 qedf_process_seq_cleanup_compl(qedf, cqe, io_req); 2872 break; 2873 } 2874 break; 2875 case FCOE_ERROR_DETECTION_CQE_TYPE: 2876 atomic_inc(&fcport->free_sqes); 2877 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2878 "Error detect CQE.\n"); 2879 qedf_process_error_detect(qedf, cqe, io_req); 2880 break; 2881 case FCOE_EXCH_CLEANUP_CQE_TYPE: 2882 atomic_inc(&fcport->free_sqes); 2883 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2884 "Cleanup CQE.\n"); 2885 qedf_process_cleanup_compl(qedf, cqe, io_req); 2886 break; 2887 case FCOE_ABTS_CQE_TYPE: 2888 atomic_inc(&fcport->free_sqes); 2889 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2890 "Abort CQE.\n"); 2891 qedf_process_abts_compl(qedf, cqe, io_req); 2892 break; 2893 case FCOE_DUMMY_CQE_TYPE: 2894 atomic_inc(&fcport->free_sqes); 2895 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2896 "Dummy CQE.\n"); 2897 break; 2898 case FCOE_LOCAL_COMP_CQE_TYPE: 2899 atomic_inc(&fcport->free_sqes); 2900 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2901 "Local completion CQE.\n"); 2902 break; 2903 case FCOE_WARNING_CQE_TYPE: 2904 atomic_inc(&fcport->free_sqes); 2905 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2906 "Warning CQE.\n"); 2907 qedf_process_warning_compl(qedf, cqe, io_req); 2908 break; 2909 case MAX_FCOE_CQE_TYPE: 2910 atomic_inc(&fcport->free_sqes); 2911 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2912 "Max FCoE CQE.\n"); 2913 break; 2914 default: 2915 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2916 "Default CQE.\n"); 2917 break; 2918 } 2919 } 2920 2921 static void qedf_free_bdq(struct qedf_ctx *qedf) 2922 { 2923 int i; 2924 2925 if (qedf->bdq_pbl_list) 2926 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE, 2927 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma); 2928 2929 if (qedf->bdq_pbl) 2930 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size, 2931 qedf->bdq_pbl, qedf->bdq_pbl_dma); 2932 2933 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2934 if (qedf->bdq[i].buf_addr) { 2935 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE, 2936 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma); 2937 } 2938 } 2939 } 2940 2941 static void qedf_free_global_queues(struct qedf_ctx *qedf) 2942 { 2943 int i; 2944 struct global_queue **gl = qedf->global_queues; 2945 2946 for (i = 0; i < qedf->num_queues; i++) { 2947 if (!gl[i]) 2948 continue; 2949 2950 if (gl[i]->cq) 2951 dma_free_coherent(&qedf->pdev->dev, 2952 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma); 2953 if (gl[i]->cq_pbl) 2954 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size, 2955 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 2956 2957 kfree(gl[i]); 2958 } 2959 2960 qedf_free_bdq(qedf); 2961 } 2962 2963 static int qedf_alloc_bdq(struct qedf_ctx *qedf) 2964 { 2965 int i; 2966 struct scsi_bd *pbl; 2967 u64 *list; 2968 2969 /* Alloc dma memory for BDQ buffers */ 2970 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2971 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev, 2972 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL); 2973 if (!qedf->bdq[i].buf_addr) { 2974 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ " 2975 "buffer %d.\n", i); 2976 return -ENOMEM; 2977 } 2978 } 2979 2980 /* Alloc dma memory for BDQ page buffer list */ 2981 qedf->bdq_pbl_mem_size = 2982 QEDF_BDQ_SIZE * sizeof(struct scsi_bd); 2983 qedf->bdq_pbl_mem_size = 2984 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE); 2985 2986 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 2987 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL); 2988 if (!qedf->bdq_pbl) { 2989 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n"); 2990 return -ENOMEM; 2991 } 2992 2993 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2994 "BDQ PBL addr=0x%p dma=%pad\n", 2995 qedf->bdq_pbl, &qedf->bdq_pbl_dma); 2996 2997 /* 2998 * Populate BDQ PBL with physical and virtual address of individual 2999 * BDQ buffers 3000 */ 3001 pbl = (struct scsi_bd *)qedf->bdq_pbl; 3002 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 3003 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma)); 3004 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma)); 3005 pbl->opaque.fcoe_opaque.hi = 0; 3006 /* Opaque lo data is an index into the BDQ array */ 3007 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i); 3008 pbl++; 3009 } 3010 3011 /* Allocate list of PBL pages */ 3012 qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev, 3013 QEDF_PAGE_SIZE, 3014 &qedf->bdq_pbl_list_dma, 3015 GFP_KERNEL); 3016 if (!qedf->bdq_pbl_list) { 3017 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n"); 3018 return -ENOMEM; 3019 } 3020 3021 /* 3022 * Now populate PBL list with pages that contain pointers to the 3023 * individual buffers. 3024 */ 3025 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size / 3026 QEDF_PAGE_SIZE; 3027 list = (u64 *)qedf->bdq_pbl_list; 3028 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) { 3029 *list = qedf->bdq_pbl_dma; 3030 list++; 3031 } 3032 3033 return 0; 3034 } 3035 3036 static int qedf_alloc_global_queues(struct qedf_ctx *qedf) 3037 { 3038 u32 *list; 3039 int i; 3040 int status; 3041 u32 *pbl; 3042 dma_addr_t page; 3043 int num_pages; 3044 3045 /* Allocate and map CQs, RQs */ 3046 /* 3047 * Number of global queues (CQ / RQ). This should 3048 * be <= number of available MSIX vectors for the PF 3049 */ 3050 if (!qedf->num_queues) { 3051 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n"); 3052 return -ENOMEM; 3053 } 3054 3055 /* 3056 * Make sure we allocated the PBL that will contain the physical 3057 * addresses of our queues 3058 */ 3059 if (!qedf->p_cpuq) { 3060 QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n"); 3061 return -EINVAL; 3062 } 3063 3064 qedf->global_queues = kzalloc((sizeof(struct global_queue *) 3065 * qedf->num_queues), GFP_KERNEL); 3066 if (!qedf->global_queues) { 3067 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global " 3068 "queues array ptr memory\n"); 3069 return -ENOMEM; 3070 } 3071 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3072 "qedf->global_queues=%p.\n", qedf->global_queues); 3073 3074 /* Allocate DMA coherent buffers for BDQ */ 3075 status = qedf_alloc_bdq(qedf); 3076 if (status) { 3077 QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n"); 3078 goto mem_alloc_failure; 3079 } 3080 3081 /* Allocate a CQ and an associated PBL for each MSI-X vector */ 3082 for (i = 0; i < qedf->num_queues; i++) { 3083 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue), 3084 GFP_KERNEL); 3085 if (!qedf->global_queues[i]) { 3086 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate " 3087 "global queue %d.\n", i); 3088 status = -ENOMEM; 3089 goto mem_alloc_failure; 3090 } 3091 3092 qedf->global_queues[i]->cq_mem_size = 3093 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3094 qedf->global_queues[i]->cq_mem_size = 3095 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE); 3096 3097 qedf->global_queues[i]->cq_pbl_size = 3098 (qedf->global_queues[i]->cq_mem_size / 3099 PAGE_SIZE) * sizeof(void *); 3100 qedf->global_queues[i]->cq_pbl_size = 3101 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE); 3102 3103 qedf->global_queues[i]->cq = 3104 dma_alloc_coherent(&qedf->pdev->dev, 3105 qedf->global_queues[i]->cq_mem_size, 3106 &qedf->global_queues[i]->cq_dma, 3107 GFP_KERNEL); 3108 3109 if (!qedf->global_queues[i]->cq) { 3110 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n"); 3111 status = -ENOMEM; 3112 goto mem_alloc_failure; 3113 } 3114 3115 qedf->global_queues[i]->cq_pbl = 3116 dma_alloc_coherent(&qedf->pdev->dev, 3117 qedf->global_queues[i]->cq_pbl_size, 3118 &qedf->global_queues[i]->cq_pbl_dma, 3119 GFP_KERNEL); 3120 3121 if (!qedf->global_queues[i]->cq_pbl) { 3122 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n"); 3123 status = -ENOMEM; 3124 goto mem_alloc_failure; 3125 } 3126 3127 /* Create PBL */ 3128 num_pages = qedf->global_queues[i]->cq_mem_size / 3129 QEDF_PAGE_SIZE; 3130 page = qedf->global_queues[i]->cq_dma; 3131 pbl = (u32 *)qedf->global_queues[i]->cq_pbl; 3132 3133 while (num_pages--) { 3134 *pbl = U64_LO(page); 3135 pbl++; 3136 *pbl = U64_HI(page); 3137 pbl++; 3138 page += QEDF_PAGE_SIZE; 3139 } 3140 /* Set the initial consumer index for cq */ 3141 qedf->global_queues[i]->cq_cons_idx = 0; 3142 } 3143 3144 list = (u32 *)qedf->p_cpuq; 3145 3146 /* 3147 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 3148 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 3149 * to the physical address which contains an array of pointers to 3150 * the physical addresses of the specific queue pages. 3151 */ 3152 for (i = 0; i < qedf->num_queues; i++) { 3153 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma); 3154 list++; 3155 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma); 3156 list++; 3157 *list = U64_LO(0); 3158 list++; 3159 *list = U64_HI(0); 3160 list++; 3161 } 3162 3163 return 0; 3164 3165 mem_alloc_failure: 3166 qedf_free_global_queues(qedf); 3167 return status; 3168 } 3169 3170 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf) 3171 { 3172 u8 sq_num_pbl_pages; 3173 u32 sq_mem_size; 3174 u32 cq_mem_size; 3175 u32 cq_num_entries; 3176 int rval; 3177 3178 /* 3179 * The number of completion queues/fastpath interrupts/status blocks 3180 * we allocation is the minimum off: 3181 * 3182 * Number of CPUs 3183 * Number allocated by qed for our PCI function 3184 */ 3185 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf); 3186 3187 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n", 3188 qedf->num_queues); 3189 3190 qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev, 3191 qedf->num_queues * sizeof(struct qedf_glbl_q_params), 3192 &qedf->hw_p_cpuq, GFP_KERNEL); 3193 3194 if (!qedf->p_cpuq) { 3195 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n"); 3196 return 1; 3197 } 3198 3199 rval = qedf_alloc_global_queues(qedf); 3200 if (rval) { 3201 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation " 3202 "failed.\n"); 3203 return 1; 3204 } 3205 3206 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */ 3207 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 3208 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE); 3209 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE); 3210 3211 /* Calculate CQ num entries */ 3212 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3213 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE); 3214 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe); 3215 3216 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params)); 3217 3218 /* Setup the value for fcoe PF */ 3219 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS; 3220 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS; 3221 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr = 3222 (u64)qedf->hw_p_cpuq; 3223 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages; 3224 3225 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0; 3226 3227 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries; 3228 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues; 3229 3230 /* log_page_size: 12 for 4KB pages */ 3231 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE); 3232 3233 qedf->pf_params.fcoe_pf_params.mtu = 9000; 3234 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI; 3235 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI; 3236 3237 /* BDQ address and size */ 3238 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] = 3239 qedf->bdq_pbl_list_dma; 3240 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] = 3241 qedf->bdq_pbl_list_num_entries; 3242 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE; 3243 3244 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3245 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n", 3246 qedf->bdq_pbl_list, 3247 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0], 3248 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]); 3249 3250 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3251 "cq_num_entries=%d.\n", 3252 qedf->pf_params.fcoe_pf_params.cq_num_entries); 3253 3254 return 0; 3255 } 3256 3257 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 3258 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf) 3259 { 3260 size_t size = 0; 3261 3262 if (qedf->p_cpuq) { 3263 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params); 3264 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq, 3265 qedf->hw_p_cpuq); 3266 } 3267 3268 qedf_free_global_queues(qedf); 3269 3270 kfree(qedf->global_queues); 3271 } 3272 3273 /* 3274 * PCI driver functions 3275 */ 3276 3277 static const struct pci_device_id qedf_pci_tbl[] = { 3278 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) }, 3279 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) }, 3280 {0} 3281 }; 3282 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl); 3283 3284 static struct pci_driver qedf_pci_driver = { 3285 .name = QEDF_MODULE_NAME, 3286 .id_table = qedf_pci_tbl, 3287 .probe = qedf_probe, 3288 .remove = qedf_remove, 3289 .shutdown = qedf_shutdown, 3290 .suspend = qedf_suspend, 3291 }; 3292 3293 static int __qedf_probe(struct pci_dev *pdev, int mode) 3294 { 3295 int rc = -EINVAL; 3296 struct fc_lport *lport; 3297 struct qedf_ctx *qedf = NULL; 3298 struct Scsi_Host *host; 3299 bool is_vf = false; 3300 struct qed_ll2_params params; 3301 char host_buf[20]; 3302 struct qed_link_params link_params; 3303 int status; 3304 void *task_start, *task_end; 3305 struct qed_slowpath_params slowpath_params; 3306 struct qed_probe_params qed_params; 3307 u16 retry_cnt = 10; 3308 3309 /* 3310 * When doing error recovery we didn't reap the lport so don't try 3311 * to reallocate it. 3312 */ 3313 retry_probe: 3314 if (mode == QEDF_MODE_RECOVERY) 3315 msleep(2000); 3316 3317 if (mode != QEDF_MODE_RECOVERY) { 3318 lport = libfc_host_alloc(&qedf_host_template, 3319 sizeof(struct qedf_ctx)); 3320 3321 if (!lport) { 3322 QEDF_ERR(NULL, "Could not allocate lport.\n"); 3323 rc = -ENOMEM; 3324 goto err0; 3325 } 3326 3327 fc_disc_init(lport); 3328 3329 /* Initialize qedf_ctx */ 3330 qedf = lport_priv(lport); 3331 set_bit(QEDF_PROBING, &qedf->flags); 3332 qedf->lport = lport; 3333 qedf->ctlr.lp = lport; 3334 qedf->pdev = pdev; 3335 qedf->dbg_ctx.pdev = pdev; 3336 qedf->dbg_ctx.host_no = lport->host->host_no; 3337 spin_lock_init(&qedf->hba_lock); 3338 INIT_LIST_HEAD(&qedf->fcports); 3339 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1; 3340 atomic_set(&qedf->num_offloads, 0); 3341 qedf->stop_io_on_error = false; 3342 pci_set_drvdata(pdev, qedf); 3343 init_completion(&qedf->fipvlan_compl); 3344 mutex_init(&qedf->stats_mutex); 3345 mutex_init(&qedf->flush_mutex); 3346 qedf->flogi_pending = 0; 3347 3348 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, 3349 "QLogic FastLinQ FCoE Module qedf %s, " 3350 "FW %d.%d.%d.%d\n", QEDF_VERSION, 3351 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 3352 FW_ENGINEERING_VERSION); 3353 } else { 3354 /* Init pointers during recovery */ 3355 qedf = pci_get_drvdata(pdev); 3356 set_bit(QEDF_PROBING, &qedf->flags); 3357 lport = qedf->lport; 3358 } 3359 3360 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n"); 3361 3362 host = lport->host; 3363 3364 /* Allocate mempool for qedf_io_work structs */ 3365 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN, 3366 qedf_io_work_cache); 3367 if (qedf->io_mempool == NULL) { 3368 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n"); 3369 goto err1; 3370 } 3371 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n", 3372 qedf->io_mempool); 3373 3374 sprintf(host_buf, "qedf_%u_link", 3375 qedf->lport->host->host_no); 3376 qedf->link_update_wq = create_workqueue(host_buf); 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 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE); 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 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no); 3587 qedf->ll2_recv_wq = 3588 create_workqueue(host_buf); 3589 if (!qedf->ll2_recv_wq) { 3590 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n"); 3591 rc = -ENOMEM; 3592 goto err7; 3593 } 3594 3595 #ifdef CONFIG_DEBUG_FS 3596 qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops, 3597 qedf_dbg_fops); 3598 #endif 3599 3600 /* Start LL2 */ 3601 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf); 3602 rc = qed_ops->ll2->start(qedf->cdev, ¶ms); 3603 if (rc) { 3604 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n"); 3605 goto err7; 3606 } 3607 set_bit(QEDF_LL2_STARTED, &qedf->flags); 3608 3609 /* Set initial FIP/FCoE VLAN to NULL */ 3610 qedf->vlan_id = 0; 3611 3612 /* 3613 * No need to setup fcoe_ctlr or fc_lport objects during recovery since 3614 * they were not reaped during the unload process. 3615 */ 3616 if (mode != QEDF_MODE_RECOVERY) { 3617 /* Setup imbedded fcoe controller */ 3618 qedf_fcoe_ctlr_setup(qedf); 3619 3620 /* Setup lport */ 3621 rc = qedf_lport_setup(qedf); 3622 if (rc) { 3623 QEDF_ERR(&(qedf->dbg_ctx), 3624 "qedf_lport_setup failed.\n"); 3625 goto err7; 3626 } 3627 } 3628 3629 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no); 3630 qedf->timer_work_queue = 3631 create_workqueue(host_buf); 3632 if (!qedf->timer_work_queue) { 3633 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer " 3634 "workqueue.\n"); 3635 rc = -ENOMEM; 3636 goto err7; 3637 } 3638 3639 /* DPC workqueue is not reaped during recovery unload */ 3640 if (mode != QEDF_MODE_RECOVERY) { 3641 sprintf(host_buf, "qedf_%u_dpc", 3642 qedf->lport->host->host_no); 3643 qedf->dpc_wq = create_workqueue(host_buf); 3644 } 3645 INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler); 3646 3647 /* 3648 * GRC dump and sysfs parameters are not reaped during the recovery 3649 * unload process. 3650 */ 3651 if (mode != QEDF_MODE_RECOVERY) { 3652 qedf->grcdump_size = 3653 qed_ops->common->dbg_all_data_size(qedf->cdev); 3654 if (qedf->grcdump_size) { 3655 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump, 3656 qedf->grcdump_size); 3657 if (rc) { 3658 QEDF_ERR(&(qedf->dbg_ctx), 3659 "GRC Dump buffer alloc failed.\n"); 3660 qedf->grcdump = NULL; 3661 } 3662 3663 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3664 "grcdump: addr=%p, size=%u.\n", 3665 qedf->grcdump, qedf->grcdump_size); 3666 } 3667 qedf_create_sysfs_ctx_attr(qedf); 3668 3669 /* Initialize I/O tracing for this adapter */ 3670 spin_lock_init(&qedf->io_trace_lock); 3671 qedf->io_trace_idx = 0; 3672 } 3673 3674 init_completion(&qedf->flogi_compl); 3675 3676 status = qed_ops->common->update_drv_state(qedf->cdev, true); 3677 if (status) 3678 QEDF_ERR(&(qedf->dbg_ctx), 3679 "Failed to send drv state to MFW.\n"); 3680 3681 memset(&link_params, 0, sizeof(struct qed_link_params)); 3682 link_params.link_up = true; 3683 status = qed_ops->common->set_link(qedf->cdev, &link_params); 3684 if (status) 3685 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n"); 3686 3687 /* Start/restart discovery */ 3688 if (mode == QEDF_MODE_RECOVERY) 3689 fcoe_ctlr_link_up(&qedf->ctlr); 3690 else 3691 fc_fabric_login(lport); 3692 3693 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n"); 3694 3695 clear_bit(QEDF_PROBING, &qedf->flags); 3696 3697 /* All good */ 3698 return 0; 3699 3700 err7: 3701 if (qedf->ll2_recv_wq) 3702 destroy_workqueue(qedf->ll2_recv_wq); 3703 fc_remove_host(qedf->lport->host); 3704 scsi_remove_host(qedf->lport->host); 3705 #ifdef CONFIG_DEBUG_FS 3706 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3707 #endif 3708 err6: 3709 qedf_cmd_mgr_free(qedf->cmd_mgr); 3710 err5: 3711 qed_ops->stop(qedf->cdev); 3712 err4: 3713 qedf_free_fcoe_pf_param(qedf); 3714 qedf_sync_free_irqs(qedf); 3715 err3: 3716 qed_ops->common->slowpath_stop(qedf->cdev); 3717 err2: 3718 qed_ops->common->remove(qedf->cdev); 3719 err1: 3720 scsi_host_put(lport->host); 3721 err0: 3722 return rc; 3723 } 3724 3725 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id) 3726 { 3727 return __qedf_probe(pdev, QEDF_MODE_NORMAL); 3728 } 3729 3730 static void __qedf_remove(struct pci_dev *pdev, int mode) 3731 { 3732 struct qedf_ctx *qedf; 3733 int rc; 3734 int cnt = 0; 3735 3736 if (!pdev) { 3737 QEDF_ERR(NULL, "pdev is NULL.\n"); 3738 return; 3739 } 3740 3741 qedf = pci_get_drvdata(pdev); 3742 3743 /* 3744 * Prevent race where we're in board disable work and then try to 3745 * rmmod the module. 3746 */ 3747 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 3748 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n"); 3749 return; 3750 } 3751 3752 stag_in_prog: 3753 if (test_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags)) { 3754 QEDF_ERR(&qedf->dbg_ctx, "Stag in progress, cnt=%d.\n", cnt); 3755 cnt++; 3756 3757 if (cnt < 5) { 3758 msleep(500); 3759 goto stag_in_prog; 3760 } 3761 } 3762 3763 if (mode != QEDF_MODE_RECOVERY) 3764 set_bit(QEDF_UNLOADING, &qedf->flags); 3765 3766 /* Logoff the fabric to upload all connections */ 3767 if (mode == QEDF_MODE_RECOVERY) 3768 fcoe_ctlr_link_down(&qedf->ctlr); 3769 else 3770 fc_fabric_logoff(qedf->lport); 3771 3772 if (!qedf_wait_for_upload(qedf)) 3773 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 3774 3775 #ifdef CONFIG_DEBUG_FS 3776 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3777 #endif 3778 3779 /* Stop any link update handling */ 3780 cancel_delayed_work_sync(&qedf->link_update); 3781 destroy_workqueue(qedf->link_update_wq); 3782 qedf->link_update_wq = NULL; 3783 3784 if (qedf->timer_work_queue) 3785 destroy_workqueue(qedf->timer_work_queue); 3786 3787 /* Stop Light L2 */ 3788 clear_bit(QEDF_LL2_STARTED, &qedf->flags); 3789 qed_ops->ll2->stop(qedf->cdev); 3790 if (qedf->ll2_recv_wq) 3791 destroy_workqueue(qedf->ll2_recv_wq); 3792 3793 /* Stop fastpath */ 3794 qedf_sync_free_irqs(qedf); 3795 qedf_destroy_sb(qedf); 3796 3797 /* 3798 * During recovery don't destroy OS constructs that represent the 3799 * physical port. 3800 */ 3801 if (mode != QEDF_MODE_RECOVERY) { 3802 qedf_free_grc_dump_buf(&qedf->grcdump); 3803 qedf_remove_sysfs_ctx_attr(qedf); 3804 3805 /* Remove all SCSI/libfc/libfcoe structures */ 3806 fcoe_ctlr_destroy(&qedf->ctlr); 3807 fc_lport_destroy(qedf->lport); 3808 fc_remove_host(qedf->lport->host); 3809 scsi_remove_host(qedf->lport->host); 3810 } 3811 3812 qedf_cmd_mgr_free(qedf->cmd_mgr); 3813 3814 if (mode != QEDF_MODE_RECOVERY) { 3815 fc_exch_mgr_free(qedf->lport); 3816 fc_lport_free_stats(qedf->lport); 3817 3818 /* Wait for all vports to be reaped */ 3819 qedf_wait_for_vport_destroy(qedf); 3820 } 3821 3822 /* 3823 * Now that all connections have been uploaded we can stop the 3824 * rest of the qed operations 3825 */ 3826 qed_ops->stop(qedf->cdev); 3827 3828 if (mode != QEDF_MODE_RECOVERY) { 3829 if (qedf->dpc_wq) { 3830 /* Stop general DPC handling */ 3831 destroy_workqueue(qedf->dpc_wq); 3832 qedf->dpc_wq = NULL; 3833 } 3834 } 3835 3836 /* Final shutdown for the board */ 3837 qedf_free_fcoe_pf_param(qedf); 3838 if (mode != QEDF_MODE_RECOVERY) { 3839 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3840 pci_set_drvdata(pdev, NULL); 3841 } 3842 3843 rc = qed_ops->common->update_drv_state(qedf->cdev, false); 3844 if (rc) 3845 QEDF_ERR(&(qedf->dbg_ctx), 3846 "Failed to send drv state to MFW.\n"); 3847 3848 if (mode != QEDF_MODE_RECOVERY && qedf->devlink) { 3849 qed_ops->common->devlink_unregister(qedf->devlink); 3850 qedf->devlink = NULL; 3851 } 3852 3853 qed_ops->common->slowpath_stop(qedf->cdev); 3854 qed_ops->common->remove(qedf->cdev); 3855 3856 mempool_destroy(qedf->io_mempool); 3857 3858 /* Only reap the Scsi_host on a real removal */ 3859 if (mode != QEDF_MODE_RECOVERY) 3860 scsi_host_put(qedf->lport->host); 3861 } 3862 3863 static void qedf_remove(struct pci_dev *pdev) 3864 { 3865 /* Check to make sure this function wasn't already disabled */ 3866 if (!atomic_read(&pdev->enable_cnt)) 3867 return; 3868 3869 __qedf_remove(pdev, QEDF_MODE_NORMAL); 3870 } 3871 3872 void qedf_wq_grcdump(struct work_struct *work) 3873 { 3874 struct qedf_ctx *qedf = 3875 container_of(work, struct qedf_ctx, grcdump_work.work); 3876 3877 QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n"); 3878 qedf_capture_grc_dump(qedf); 3879 } 3880 3881 void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type) 3882 { 3883 struct qedf_ctx *qedf = dev; 3884 3885 QEDF_ERR(&(qedf->dbg_ctx), 3886 "Hardware error handler scheduled, event=%d.\n", 3887 err_type); 3888 3889 if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) { 3890 QEDF_ERR(&(qedf->dbg_ctx), 3891 "Already in recovery, not scheduling board disable work.\n"); 3892 return; 3893 } 3894 3895 switch (err_type) { 3896 case QED_HW_ERR_FAN_FAIL: 3897 schedule_delayed_work(&qedf->board_disable_work, 0); 3898 break; 3899 case QED_HW_ERR_MFW_RESP_FAIL: 3900 case QED_HW_ERR_HW_ATTN: 3901 case QED_HW_ERR_DMAE_FAIL: 3902 case QED_HW_ERR_FW_ASSERT: 3903 /* Prevent HW attentions from being reasserted */ 3904 qed_ops->common->attn_clr_enable(qedf->cdev, true); 3905 break; 3906 case QED_HW_ERR_RAMROD_FAIL: 3907 /* Prevent HW attentions from being reasserted */ 3908 qed_ops->common->attn_clr_enable(qedf->cdev, true); 3909 3910 if (qedf_enable_recovery && qedf->devlink) 3911 qed_ops->common->report_fatal_error(qedf->devlink, 3912 err_type); 3913 3914 break; 3915 default: 3916 break; 3917 } 3918 } 3919 3920 /* 3921 * Protocol TLV handler 3922 */ 3923 void qedf_get_protocol_tlv_data(void *dev, void *data) 3924 { 3925 struct qedf_ctx *qedf = dev; 3926 struct qed_mfw_tlv_fcoe *fcoe = data; 3927 struct fc_lport *lport; 3928 struct Scsi_Host *host; 3929 struct fc_host_attrs *fc_host; 3930 struct fc_host_statistics *hst; 3931 3932 if (!qedf) { 3933 QEDF_ERR(NULL, "qedf is null.\n"); 3934 return; 3935 } 3936 3937 if (test_bit(QEDF_PROBING, &qedf->flags)) { 3938 QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n"); 3939 return; 3940 } 3941 3942 lport = qedf->lport; 3943 host = lport->host; 3944 fc_host = shost_to_fc_host(host); 3945 3946 /* Force a refresh of the fc_host stats including offload stats */ 3947 hst = qedf_fc_get_host_stats(host); 3948 3949 fcoe->qos_pri_set = true; 3950 fcoe->qos_pri = 3; /* Hard coded to 3 in driver */ 3951 3952 fcoe->ra_tov_set = true; 3953 fcoe->ra_tov = lport->r_a_tov; 3954 3955 fcoe->ed_tov_set = true; 3956 fcoe->ed_tov = lport->e_d_tov; 3957 3958 fcoe->npiv_state_set = true; 3959 fcoe->npiv_state = 1; /* NPIV always enabled */ 3960 3961 fcoe->num_npiv_ids_set = true; 3962 fcoe->num_npiv_ids = fc_host->npiv_vports_inuse; 3963 3964 /* Certain attributes we only want to set if we've selected an FCF */ 3965 if (qedf->ctlr.sel_fcf) { 3966 fcoe->switch_name_set = true; 3967 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name); 3968 } 3969 3970 fcoe->port_state_set = true; 3971 /* For qedf we're either link down or fabric attach */ 3972 if (lport->link_up) 3973 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC; 3974 else 3975 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE; 3976 3977 fcoe->link_failures_set = true; 3978 fcoe->link_failures = (u16)hst->link_failure_count; 3979 3980 fcoe->fcoe_txq_depth_set = true; 3981 fcoe->fcoe_rxq_depth_set = true; 3982 fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS; 3983 fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS; 3984 3985 fcoe->fcoe_rx_frames_set = true; 3986 fcoe->fcoe_rx_frames = hst->rx_frames; 3987 3988 fcoe->fcoe_tx_frames_set = true; 3989 fcoe->fcoe_tx_frames = hst->tx_frames; 3990 3991 fcoe->fcoe_rx_bytes_set = true; 3992 fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000; 3993 3994 fcoe->fcoe_tx_bytes_set = true; 3995 fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000; 3996 3997 fcoe->crc_count_set = true; 3998 fcoe->crc_count = hst->invalid_crc_count; 3999 4000 fcoe->tx_abts_set = true; 4001 fcoe->tx_abts = hst->fcp_packet_aborts; 4002 4003 fcoe->tx_lun_rst_set = true; 4004 fcoe->tx_lun_rst = qedf->lun_resets; 4005 4006 fcoe->abort_task_sets_set = true; 4007 fcoe->abort_task_sets = qedf->packet_aborts; 4008 4009 fcoe->scsi_busy_set = true; 4010 fcoe->scsi_busy = qedf->busy; 4011 4012 fcoe->scsi_tsk_full_set = true; 4013 fcoe->scsi_tsk_full = qedf->task_set_fulls; 4014 } 4015 4016 /* Deferred work function to perform soft context reset on STAG change */ 4017 void qedf_stag_change_work(struct work_struct *work) 4018 { 4019 struct qedf_ctx *qedf = 4020 container_of(work, struct qedf_ctx, stag_work.work); 4021 4022 if (!qedf) { 4023 QEDF_ERR(&qedf->dbg_ctx, "qedf is NULL"); 4024 return; 4025 } 4026 4027 if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) { 4028 QEDF_ERR(&qedf->dbg_ctx, 4029 "Already is in recovery, hence not calling software context reset.\n"); 4030 return; 4031 } 4032 4033 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 4034 QEDF_ERR(&qedf->dbg_ctx, "Driver unloading\n"); 4035 return; 4036 } 4037 4038 set_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags); 4039 4040 printk_ratelimited("[%s]:[%s:%d]:%d: Performing software context reset.", 4041 dev_name(&qedf->pdev->dev), __func__, __LINE__, 4042 qedf->dbg_ctx.host_no); 4043 qedf_ctx_soft_reset(qedf->lport); 4044 } 4045 4046 static void qedf_shutdown(struct pci_dev *pdev) 4047 { 4048 __qedf_remove(pdev, QEDF_MODE_NORMAL); 4049 } 4050 4051 static int qedf_suspend(struct pci_dev *pdev, pm_message_t state) 4052 { 4053 struct qedf_ctx *qedf; 4054 4055 if (!pdev) { 4056 QEDF_ERR(NULL, "pdev is NULL.\n"); 4057 return -ENODEV; 4058 } 4059 4060 qedf = pci_get_drvdata(pdev); 4061 4062 QEDF_ERR(&qedf->dbg_ctx, "%s: Device does not support suspend operation\n", __func__); 4063 4064 return -EPERM; 4065 } 4066 4067 /* 4068 * Recovery handler code 4069 */ 4070 static void qedf_schedule_recovery_handler(void *dev) 4071 { 4072 struct qedf_ctx *qedf = dev; 4073 4074 QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n"); 4075 schedule_delayed_work(&qedf->recovery_work, 0); 4076 } 4077 4078 static void qedf_recovery_handler(struct work_struct *work) 4079 { 4080 struct qedf_ctx *qedf = 4081 container_of(work, struct qedf_ctx, recovery_work.work); 4082 4083 if (test_and_set_bit(QEDF_IN_RECOVERY, &qedf->flags)) 4084 return; 4085 4086 /* 4087 * Call common_ops->recovery_prolog to allow the MFW to quiesce 4088 * any PCI transactions. 4089 */ 4090 qed_ops->common->recovery_prolog(qedf->cdev); 4091 4092 QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n"); 4093 __qedf_remove(qedf->pdev, QEDF_MODE_RECOVERY); 4094 /* 4095 * Reset link and dcbx to down state since we will not get a link down 4096 * event from the MFW but calling __qedf_remove will essentially be a 4097 * link down event. 4098 */ 4099 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 4100 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 4101 __qedf_probe(qedf->pdev, QEDF_MODE_RECOVERY); 4102 clear_bit(QEDF_IN_RECOVERY, &qedf->flags); 4103 QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n"); 4104 } 4105 4106 /* Generic TLV data callback */ 4107 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 4108 { 4109 struct qedf_ctx *qedf; 4110 4111 if (!dev) { 4112 QEDF_INFO(NULL, QEDF_LOG_EVT, 4113 "dev is NULL so ignoring get_generic_tlv_data request.\n"); 4114 return; 4115 } 4116 qedf = (struct qedf_ctx *)dev; 4117 4118 memset(data, 0, sizeof(struct qed_generic_tlvs)); 4119 ether_addr_copy(data->mac[0], qedf->mac); 4120 } 4121 4122 /* 4123 * Module Init/Remove 4124 */ 4125 4126 static int __init qedf_init(void) 4127 { 4128 int ret; 4129 4130 /* If debug=1 passed, set the default log mask */ 4131 if (qedf_debug == QEDF_LOG_DEFAULT) 4132 qedf_debug = QEDF_DEFAULT_LOG_MASK; 4133 4134 /* 4135 * Check that default prio for FIP/FCoE traffic is between 0..7 if a 4136 * value has been set 4137 */ 4138 if (qedf_default_prio > -1) 4139 if (qedf_default_prio > 7) { 4140 qedf_default_prio = QEDF_DEFAULT_PRIO; 4141 QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n", 4142 QEDF_DEFAULT_PRIO); 4143 } 4144 4145 /* Print driver banner */ 4146 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR, 4147 QEDF_VERSION); 4148 4149 /* Create kmem_cache for qedf_io_work structs */ 4150 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache", 4151 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL); 4152 if (qedf_io_work_cache == NULL) { 4153 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n"); 4154 goto err1; 4155 } 4156 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n", 4157 qedf_io_work_cache); 4158 4159 qed_ops = qed_get_fcoe_ops(); 4160 if (!qed_ops) { 4161 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n"); 4162 goto err1; 4163 } 4164 4165 #ifdef CONFIG_DEBUG_FS 4166 qedf_dbg_init("qedf"); 4167 #endif 4168 4169 qedf_fc_transport_template = 4170 fc_attach_transport(&qedf_fc_transport_fn); 4171 if (!qedf_fc_transport_template) { 4172 QEDF_ERR(NULL, "Could not register with FC transport\n"); 4173 goto err2; 4174 } 4175 4176 qedf_fc_vport_transport_template = 4177 fc_attach_transport(&qedf_fc_vport_transport_fn); 4178 if (!qedf_fc_vport_transport_template) { 4179 QEDF_ERR(NULL, "Could not register vport template with FC " 4180 "transport\n"); 4181 goto err3; 4182 } 4183 4184 qedf_io_wq = create_workqueue("qedf_io_wq"); 4185 if (!qedf_io_wq) { 4186 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n"); 4187 goto err4; 4188 } 4189 4190 qedf_cb_ops.get_login_failures = qedf_get_login_failures; 4191 4192 ret = pci_register_driver(&qedf_pci_driver); 4193 if (ret) { 4194 QEDF_ERR(NULL, "Failed to register driver\n"); 4195 goto err5; 4196 } 4197 4198 return 0; 4199 4200 err5: 4201 destroy_workqueue(qedf_io_wq); 4202 err4: 4203 fc_release_transport(qedf_fc_vport_transport_template); 4204 err3: 4205 fc_release_transport(qedf_fc_transport_template); 4206 err2: 4207 #ifdef CONFIG_DEBUG_FS 4208 qedf_dbg_exit(); 4209 #endif 4210 qed_put_fcoe_ops(); 4211 err1: 4212 return -EINVAL; 4213 } 4214 4215 static void __exit qedf_cleanup(void) 4216 { 4217 pci_unregister_driver(&qedf_pci_driver); 4218 4219 destroy_workqueue(qedf_io_wq); 4220 4221 fc_release_transport(qedf_fc_vport_transport_template); 4222 fc_release_transport(qedf_fc_transport_template); 4223 #ifdef CONFIG_DEBUG_FS 4224 qedf_dbg_exit(); 4225 #endif 4226 qed_put_fcoe_ops(); 4227 4228 kmem_cache_destroy(qedf_io_work_cache); 4229 } 4230 4231 MODULE_LICENSE("GPL"); 4232 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module"); 4233 MODULE_AUTHOR("QLogic Corporation"); 4234 MODULE_VERSION(QEDF_VERSION); 4235 module_init(qedf_init); 4236 module_exit(qedf_cleanup); 4237