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