1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * QLogic FCoE Offload Driver 4 * Copyright (c) 2016-2018 Cavium Inc. 5 */ 6 #include <linux/init.h> 7 #include <linux/kernel.h> 8 #include <linux/module.h> 9 #include <linux/pci.h> 10 #include <linux/device.h> 11 #include <linux/highmem.h> 12 #include <linux/crc32.h> 13 #include <linux/interrupt.h> 14 #include <linux/list.h> 15 #include <linux/kthread.h> 16 #include <linux/phylink.h> 17 #include <scsi/libfc.h> 18 #include <scsi/scsi_host.h> 19 #include <scsi/fc_frame.h> 20 #include <linux/if_ether.h> 21 #include <linux/if_vlan.h> 22 #include <linux/cpu.h> 23 #include "qedf.h" 24 #include "qedf_dbg.h" 25 #include <uapi/linux/pci_regs.h> 26 27 const struct qed_fcoe_ops *qed_ops; 28 29 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id); 30 static void qedf_remove(struct pci_dev *pdev); 31 static void qedf_shutdown(struct pci_dev *pdev); 32 static void qedf_schedule_recovery_handler(void *dev); 33 static void qedf_recovery_handler(struct work_struct *work); 34 35 /* 36 * Driver module parameters. 37 */ 38 static unsigned int qedf_dev_loss_tmo = 60; 39 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO); 40 MODULE_PARM_DESC(dev_loss_tmo, " dev_loss_tmo setting for attached " 41 "remote ports (default 60)"); 42 43 uint qedf_debug = QEDF_LOG_INFO; 44 module_param_named(debug, qedf_debug, uint, S_IRUGO|S_IWUSR); 45 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging" 46 " mask"); 47 48 static uint qedf_fipvlan_retries = 60; 49 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO); 50 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt " 51 "before giving up (default 60)"); 52 53 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN; 54 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO); 55 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails " 56 "(default 1002)."); 57 58 static int qedf_default_prio = -1; 59 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO); 60 MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE" 61 " traffic (value between 0 and 7, default 3)."); 62 63 uint qedf_dump_frames; 64 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR); 65 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames " 66 "(default off)"); 67 68 static uint qedf_queue_depth; 69 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO); 70 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered " 71 "by the qedf driver. Default is 0 (use OS default)."); 72 73 uint qedf_io_tracing; 74 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR); 75 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions " 76 "into trace buffer. (default off)."); 77 78 static uint qedf_max_lun = MAX_FIBRE_LUNS; 79 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO); 80 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver " 81 "supports. (default 0xffffffff)"); 82 83 uint qedf_link_down_tmo; 84 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO); 85 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the " 86 "link is down by N seconds."); 87 88 bool qedf_retry_delay; 89 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR); 90 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry " 91 "delay handling (default off)."); 92 93 static bool qedf_dcbx_no_wait; 94 module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR); 95 MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start " 96 "sending FIP VLAN requests on link up (Default: off)."); 97 98 static uint qedf_dp_module; 99 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO); 100 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed " 101 "qed module during probe."); 102 103 static uint qedf_dp_level = QED_LEVEL_NOTICE; 104 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO); 105 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module " 106 "during probe (0-3: 0 more verbose)."); 107 108 static bool qedf_enable_recovery = true; 109 module_param_named(enable_recovery, qedf_enable_recovery, 110 bool, S_IRUGO | S_IWUSR); 111 MODULE_PARM_DESC(enable_recovery, "Enable/disable recovery on driver/firmware " 112 "interface level errors 0 = Disabled, 1 = Enabled (Default: 1)."); 113 114 struct workqueue_struct *qedf_io_wq; 115 116 static struct fcoe_percpu_s qedf_global; 117 static DEFINE_SPINLOCK(qedf_global_lock); 118 119 static struct kmem_cache *qedf_io_work_cache; 120 121 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id) 122 { 123 int vlan_id_tmp = 0; 124 125 vlan_id_tmp = vlan_id | (qedf->prio << VLAN_PRIO_SHIFT); 126 qedf->vlan_id = vlan_id_tmp; 127 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 128 "Setting vlan_id=0x%04x prio=%d.\n", 129 vlan_id_tmp, qedf->prio); 130 } 131 132 /* Returns true if we have a valid vlan, false otherwise */ 133 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf) 134 { 135 136 while (qedf->fipvlan_retries--) { 137 /* This is to catch if link goes down during fipvlan retries */ 138 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 139 QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n"); 140 return false; 141 } 142 143 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 144 QEDF_ERR(&qedf->dbg_ctx, "Driver unloading.\n"); 145 return false; 146 } 147 148 if (qedf->vlan_id > 0) { 149 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 150 "vlan = 0x%x already set, calling ctlr_link_up.\n", 151 qedf->vlan_id); 152 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) 153 fcoe_ctlr_link_up(&qedf->ctlr); 154 return true; 155 } 156 157 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 158 "Retry %d.\n", qedf->fipvlan_retries); 159 init_completion(&qedf->fipvlan_compl); 160 qedf_fcoe_send_vlan_req(qedf); 161 wait_for_completion_timeout(&qedf->fipvlan_compl, 1 * HZ); 162 } 163 164 return false; 165 } 166 167 static void qedf_handle_link_update(struct work_struct *work) 168 { 169 struct qedf_ctx *qedf = 170 container_of(work, struct qedf_ctx, link_update.work); 171 int rc; 172 173 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n", 174 atomic_read(&qedf->link_state)); 175 176 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 177 rc = qedf_initiate_fipvlan_req(qedf); 178 if (rc) 179 return; 180 181 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 182 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 183 "Link is down, resetting vlan_id.\n"); 184 qedf->vlan_id = 0; 185 return; 186 } 187 188 /* 189 * If we get here then we never received a repsonse to our 190 * fip vlan request so set the vlan_id to the default and 191 * tell FCoE that the link is up 192 */ 193 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN " 194 "response, falling back to default VLAN %d.\n", 195 qedf_fallback_vlan); 196 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 197 198 /* 199 * Zero out data_src_addr so we'll update it with the new 200 * lport port_id 201 */ 202 eth_zero_addr(qedf->data_src_addr); 203 fcoe_ctlr_link_up(&qedf->ctlr); 204 } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 205 /* 206 * If we hit here and link_down_tmo_valid is still 1 it means 207 * that link_down_tmo timed out so set it to 0 to make sure any 208 * other readers have accurate state. 209 */ 210 atomic_set(&qedf->link_down_tmo_valid, 0); 211 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 212 "Calling fcoe_ctlr_link_down().\n"); 213 fcoe_ctlr_link_down(&qedf->ctlr); 214 if (qedf_wait_for_upload(qedf) == false) 215 QEDF_ERR(&qedf->dbg_ctx, 216 "Could not upload all sessions.\n"); 217 /* Reset the number of FIP VLAN retries */ 218 qedf->fipvlan_retries = qedf_fipvlan_retries; 219 } 220 } 221 222 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1 223 #define QEDF_FCOE_MAC_METHOD_FCF_MAP 2 224 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3 225 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp) 226 { 227 u8 *granted_mac; 228 struct fc_frame_header *fh = fc_frame_header_get(fp); 229 u8 fc_map[3]; 230 int method = 0; 231 232 /* Get granted MAC address from FIP FLOGI payload */ 233 granted_mac = fr_cb(fp)->granted_mac; 234 235 /* 236 * We set the source MAC for FCoE traffic based on the Granted MAC 237 * address from the switch. 238 * 239 * If granted_mac is non-zero, we used that. 240 * If the granted_mac is zeroed out, created the FCoE MAC based on 241 * the sel_fcf->fc_map and the d_id fo the FLOGI frame. 242 * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the 243 * d_id of the FLOGI frame. 244 */ 245 if (!is_zero_ether_addr(granted_mac)) { 246 ether_addr_copy(qedf->data_src_addr, granted_mac); 247 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC; 248 } else if (qedf->ctlr.sel_fcf->fc_map != 0) { 249 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map); 250 qedf->data_src_addr[0] = fc_map[0]; 251 qedf->data_src_addr[1] = fc_map[1]; 252 qedf->data_src_addr[2] = fc_map[2]; 253 qedf->data_src_addr[3] = fh->fh_d_id[0]; 254 qedf->data_src_addr[4] = fh->fh_d_id[1]; 255 qedf->data_src_addr[5] = fh->fh_d_id[2]; 256 method = QEDF_FCOE_MAC_METHOD_FCF_MAP; 257 } else { 258 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id); 259 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC; 260 } 261 262 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 263 "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method); 264 } 265 266 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp, 267 void *arg) 268 { 269 struct fc_exch *exch = fc_seq_exch(seq); 270 struct fc_lport *lport = exch->lp; 271 struct qedf_ctx *qedf = lport_priv(lport); 272 273 if (!qedf) { 274 QEDF_ERR(NULL, "qedf is NULL.\n"); 275 return; 276 } 277 278 /* 279 * If ERR_PTR is set then don't try to stat anything as it will cause 280 * a crash when we access fp. 281 */ 282 if (IS_ERR(fp)) { 283 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 284 "fp has IS_ERR() set.\n"); 285 goto skip_stat; 286 } 287 288 /* Log stats for FLOGI reject */ 289 if (fc_frame_payload_op(fp) == ELS_LS_RJT) 290 qedf->flogi_failed++; 291 else if (fc_frame_payload_op(fp) == ELS_LS_ACC) { 292 /* Set the source MAC we will use for FCoE traffic */ 293 qedf_set_data_src_addr(qedf, fp); 294 qedf->flogi_pending = 0; 295 } 296 297 /* Complete flogi_compl so we can proceed to sending ADISCs */ 298 complete(&qedf->flogi_compl); 299 300 skip_stat: 301 /* Report response to libfc */ 302 fc_lport_flogi_resp(seq, fp, lport); 303 } 304 305 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did, 306 struct fc_frame *fp, unsigned int op, 307 void (*resp)(struct fc_seq *, 308 struct fc_frame *, 309 void *), 310 void *arg, u32 timeout) 311 { 312 struct qedf_ctx *qedf = lport_priv(lport); 313 314 /* 315 * Intercept FLOGI for statistic purposes. Note we use the resp 316 * callback to tell if this is really a flogi. 317 */ 318 if (resp == fc_lport_flogi_resp) { 319 qedf->flogi_cnt++; 320 if (qedf->flogi_pending >= QEDF_FLOGI_RETRY_CNT) { 321 schedule_delayed_work(&qedf->stag_work, 2); 322 return NULL; 323 } 324 qedf->flogi_pending++; 325 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp, 326 arg, timeout); 327 } 328 329 return fc_elsct_send(lport, did, fp, op, resp, arg, timeout); 330 } 331 332 int qedf_send_flogi(struct qedf_ctx *qedf) 333 { 334 struct fc_lport *lport; 335 struct fc_frame *fp; 336 337 lport = qedf->lport; 338 339 if (!lport->tt.elsct_send) { 340 QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n"); 341 return -EINVAL; 342 } 343 344 fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); 345 if (!fp) { 346 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n"); 347 return -ENOMEM; 348 } 349 350 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 351 "Sending FLOGI to reestablish session with switch.\n"); 352 lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, 353 ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov); 354 355 init_completion(&qedf->flogi_compl); 356 357 return 0; 358 } 359 360 /* 361 * This function is called if link_down_tmo is in use. If we get a link up and 362 * link_down_tmo has not expired then use just FLOGI/ADISC to recover our 363 * sessions with targets. Otherwise, just call fcoe_ctlr_link_up(). 364 */ 365 static void qedf_link_recovery(struct work_struct *work) 366 { 367 struct qedf_ctx *qedf = 368 container_of(work, struct qedf_ctx, link_recovery.work); 369 struct fc_lport *lport = qedf->lport; 370 struct fc_rport_priv *rdata; 371 bool rc; 372 int retries = 30; 373 int rval, i; 374 struct list_head rdata_login_list; 375 376 INIT_LIST_HEAD(&rdata_login_list); 377 378 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 379 "Link down tmo did not expire.\n"); 380 381 /* 382 * Essentially reset the fcoe_ctlr here without affecting the state 383 * of the libfc structs. 384 */ 385 qedf->ctlr.state = FIP_ST_LINK_WAIT; 386 fcoe_ctlr_link_down(&qedf->ctlr); 387 388 /* 389 * Bring the link up before we send the fipvlan request so libfcoe 390 * can select a new fcf in parallel 391 */ 392 fcoe_ctlr_link_up(&qedf->ctlr); 393 394 /* Since the link when down and up to verify which vlan we're on */ 395 qedf->fipvlan_retries = qedf_fipvlan_retries; 396 rc = qedf_initiate_fipvlan_req(qedf); 397 /* If getting the VLAN fails, set the VLAN to the fallback one */ 398 if (!rc) 399 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 400 401 /* 402 * We need to wait for an FCF to be selected due to the 403 * fcoe_ctlr_link_up other the FLOGI will be rejected. 404 */ 405 while (retries > 0) { 406 if (qedf->ctlr.sel_fcf) { 407 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 408 "FCF reselected, proceeding with FLOGI.\n"); 409 break; 410 } 411 msleep(500); 412 retries--; 413 } 414 415 if (retries < 1) { 416 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for " 417 "FCF selection.\n"); 418 return; 419 } 420 421 rval = qedf_send_flogi(qedf); 422 if (rval) 423 return; 424 425 /* Wait for FLOGI completion before proceeding with sending ADISCs */ 426 i = wait_for_completion_timeout(&qedf->flogi_compl, 427 qedf->lport->r_a_tov); 428 if (i == 0) { 429 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n"); 430 return; 431 } 432 433 /* 434 * Call lport->tt.rport_login which will cause libfc to send an 435 * ADISC since the rport is in state ready. 436 */ 437 mutex_lock(&lport->disc.disc_mutex); 438 list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) { 439 if (kref_get_unless_zero(&rdata->kref)) { 440 fc_rport_login(rdata); 441 kref_put(&rdata->kref, fc_rport_destroy); 442 } 443 } 444 mutex_unlock(&lport->disc.disc_mutex); 445 } 446 447 static void qedf_update_link_speed(struct qedf_ctx *qedf, 448 struct qed_link_output *link) 449 { 450 __ETHTOOL_DECLARE_LINK_MODE_MASK(sup_caps); 451 struct fc_lport *lport = qedf->lport; 452 453 lport->link_speed = FC_PORTSPEED_UNKNOWN; 454 lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN; 455 456 /* Set fc_host link speed */ 457 switch (link->speed) { 458 case 10000: 459 lport->link_speed = FC_PORTSPEED_10GBIT; 460 break; 461 case 25000: 462 lport->link_speed = FC_PORTSPEED_25GBIT; 463 break; 464 case 40000: 465 lport->link_speed = FC_PORTSPEED_40GBIT; 466 break; 467 case 50000: 468 lport->link_speed = FC_PORTSPEED_50GBIT; 469 break; 470 case 100000: 471 lport->link_speed = FC_PORTSPEED_100GBIT; 472 break; 473 case 20000: 474 lport->link_speed = FC_PORTSPEED_20GBIT; 475 break; 476 default: 477 lport->link_speed = FC_PORTSPEED_UNKNOWN; 478 break; 479 } 480 481 /* 482 * Set supported link speed by querying the supported 483 * capabilities of the link. 484 */ 485 486 phylink_zero(sup_caps); 487 phylink_set(sup_caps, 10000baseT_Full); 488 phylink_set(sup_caps, 10000baseKX4_Full); 489 phylink_set(sup_caps, 10000baseR_FEC); 490 phylink_set(sup_caps, 10000baseCR_Full); 491 phylink_set(sup_caps, 10000baseSR_Full); 492 phylink_set(sup_caps, 10000baseLR_Full); 493 phylink_set(sup_caps, 10000baseLRM_Full); 494 phylink_set(sup_caps, 10000baseKR_Full); 495 496 if (linkmode_intersects(link->supported_caps, sup_caps)) 497 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT; 498 499 phylink_zero(sup_caps); 500 phylink_set(sup_caps, 25000baseKR_Full); 501 phylink_set(sup_caps, 25000baseCR_Full); 502 phylink_set(sup_caps, 25000baseSR_Full); 503 504 if (linkmode_intersects(link->supported_caps, sup_caps)) 505 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT; 506 507 phylink_zero(sup_caps); 508 phylink_set(sup_caps, 40000baseLR4_Full); 509 phylink_set(sup_caps, 40000baseKR4_Full); 510 phylink_set(sup_caps, 40000baseCR4_Full); 511 phylink_set(sup_caps, 40000baseSR4_Full); 512 513 if (linkmode_intersects(link->supported_caps, sup_caps)) 514 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT; 515 516 phylink_zero(sup_caps); 517 phylink_set(sup_caps, 50000baseKR2_Full); 518 phylink_set(sup_caps, 50000baseCR2_Full); 519 phylink_set(sup_caps, 50000baseSR2_Full); 520 521 if (linkmode_intersects(link->supported_caps, sup_caps)) 522 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT; 523 524 phylink_zero(sup_caps); 525 phylink_set(sup_caps, 100000baseKR4_Full); 526 phylink_set(sup_caps, 100000baseSR4_Full); 527 phylink_set(sup_caps, 100000baseCR4_Full); 528 phylink_set(sup_caps, 100000baseLR4_ER4_Full); 529 530 if (linkmode_intersects(link->supported_caps, sup_caps)) 531 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT; 532 533 phylink_zero(sup_caps); 534 phylink_set(sup_caps, 20000baseKR2_Full); 535 536 if (linkmode_intersects(link->supported_caps, sup_caps)) 537 lport->link_supported_speeds |= FC_PORTSPEED_20GBIT; 538 539 fc_host_supported_speeds(lport->host) = lport->link_supported_speeds; 540 } 541 542 static void qedf_bw_update(void *dev) 543 { 544 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 545 struct qed_link_output link; 546 547 /* Get the latest status of the link */ 548 qed_ops->common->get_link(qedf->cdev, &link); 549 550 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 551 QEDF_ERR(&qedf->dbg_ctx, 552 "Ignore link update, driver getting unload.\n"); 553 return; 554 } 555 556 if (link.link_up) { 557 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) 558 qedf_update_link_speed(qedf, &link); 559 else 560 QEDF_ERR(&qedf->dbg_ctx, 561 "Ignore bw update, link is down.\n"); 562 563 } else { 564 QEDF_ERR(&qedf->dbg_ctx, "link_up is not set.\n"); 565 } 566 } 567 568 static void qedf_link_update(void *dev, struct qed_link_output *link) 569 { 570 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 571 572 /* 573 * Prevent race where we're removing the module and we get link update 574 * for qed. 575 */ 576 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 577 QEDF_ERR(&qedf->dbg_ctx, 578 "Ignore link update, driver getting unload.\n"); 579 return; 580 } 581 582 if (link->link_up) { 583 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 584 QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC, 585 "Ignoring link up event as link is already up.\n"); 586 return; 587 } 588 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n", 589 link->speed / 1000); 590 591 /* Cancel any pending link down work */ 592 cancel_delayed_work(&qedf->link_update); 593 594 atomic_set(&qedf->link_state, QEDF_LINK_UP); 595 qedf_update_link_speed(qedf, link); 596 597 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE || 598 qedf_dcbx_no_wait) { 599 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 600 "DCBx done.\n"); 601 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 602 queue_delayed_work(qedf->link_update_wq, 603 &qedf->link_recovery, 0); 604 else 605 queue_delayed_work(qedf->link_update_wq, 606 &qedf->link_update, 0); 607 atomic_set(&qedf->link_down_tmo_valid, 0); 608 } 609 610 } else { 611 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n"); 612 613 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 614 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 615 /* 616 * Flag that we're waiting for the link to come back up before 617 * informing the fcoe layer of the event. 618 */ 619 if (qedf_link_down_tmo > 0) { 620 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 621 "Starting link down tmo.\n"); 622 atomic_set(&qedf->link_down_tmo_valid, 1); 623 } 624 qedf->vlan_id = 0; 625 qedf_update_link_speed(qedf, link); 626 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 627 qedf_link_down_tmo * HZ); 628 } 629 } 630 631 632 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type) 633 { 634 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 635 u8 tmp_prio; 636 637 QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe " 638 "prio=%d.\n", get->operational.valid, get->operational.enabled, 639 get->operational.app_prio.fcoe); 640 641 if (get->operational.enabled && get->operational.valid) { 642 /* If DCBX was already negotiated on link up then just exit */ 643 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) { 644 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 645 "DCBX already set on link up.\n"); 646 return; 647 } 648 649 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE); 650 651 /* 652 * Set the 8021q priority in the following manner: 653 * 654 * 1. If a modparam is set use that 655 * 2. If the value is not between 0..7 use the default 656 * 3. Use the priority we get from the DCBX app tag 657 */ 658 tmp_prio = get->operational.app_prio.fcoe; 659 if (qedf_default_prio > -1) 660 qedf->prio = qedf_default_prio; 661 else if (tmp_prio > 7) { 662 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 663 "FIP/FCoE prio %d out of range, setting to %d.\n", 664 tmp_prio, QEDF_DEFAULT_PRIO); 665 qedf->prio = QEDF_DEFAULT_PRIO; 666 } else 667 qedf->prio = tmp_prio; 668 669 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP && 670 !qedf_dcbx_no_wait) { 671 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 672 queue_delayed_work(qedf->link_update_wq, 673 &qedf->link_recovery, 0); 674 else 675 queue_delayed_work(qedf->link_update_wq, 676 &qedf->link_update, 0); 677 atomic_set(&qedf->link_down_tmo_valid, 0); 678 } 679 } 680 681 } 682 683 static u32 qedf_get_login_failures(void *cookie) 684 { 685 struct qedf_ctx *qedf; 686 687 qedf = (struct qedf_ctx *)cookie; 688 return qedf->flogi_failed; 689 } 690 691 static struct qed_fcoe_cb_ops qedf_cb_ops = { 692 { 693 .link_update = qedf_link_update, 694 .bw_update = qedf_bw_update, 695 .schedule_recovery_handler = qedf_schedule_recovery_handler, 696 .dcbx_aen = qedf_dcbx_handler, 697 .get_generic_tlv_data = qedf_get_generic_tlv_data, 698 .get_protocol_tlv_data = qedf_get_protocol_tlv_data, 699 .schedule_hw_err_handler = qedf_schedule_hw_err_handler, 700 } 701 }; 702 703 /* 704 * Various transport templates. 705 */ 706 707 static struct scsi_transport_template *qedf_fc_transport_template; 708 static struct scsi_transport_template *qedf_fc_vport_transport_template; 709 710 /* 711 * SCSI EH handlers 712 */ 713 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd) 714 { 715 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); 716 struct fc_lport *lport; 717 struct qedf_ctx *qedf; 718 struct qedf_ioreq *io_req; 719 struct fc_rport_libfc_priv *rp = rport->dd_data; 720 struct fc_rport_priv *rdata; 721 struct qedf_rport *fcport = NULL; 722 int rc = FAILED; 723 int wait_count = 100; 724 int refcount = 0; 725 int rval; 726 int got_ref = 0; 727 728 lport = shost_priv(sc_cmd->device->host); 729 qedf = (struct qedf_ctx *)lport_priv(lport); 730 731 /* rport and tgt are allocated together, so tgt should be non-NULL */ 732 fcport = (struct qedf_rport *)&rp[1]; 733 rdata = fcport->rdata; 734 if (!rdata || !kref_get_unless_zero(&rdata->kref)) { 735 QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd); 736 rc = SUCCESS; 737 goto out; 738 } 739 740 741 io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr; 742 if (!io_req) { 743 QEDF_ERR(&qedf->dbg_ctx, 744 "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n", 745 sc_cmd, sc_cmd->cmnd[0], 746 rdata->ids.port_id); 747 rc = SUCCESS; 748 goto drop_rdata_kref; 749 } 750 751 rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */ 752 if (rval) 753 got_ref = 1; 754 755 /* If we got a valid io_req, confirm it belongs to this sc_cmd. */ 756 if (!rval || io_req->sc_cmd != sc_cmd) { 757 QEDF_ERR(&qedf->dbg_ctx, 758 "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n", 759 io_req->sc_cmd, sc_cmd, rdata->ids.port_id); 760 761 goto drop_rdata_kref; 762 } 763 764 if (fc_remote_port_chkready(rport)) { 765 refcount = kref_read(&io_req->refcount); 766 QEDF_ERR(&qedf->dbg_ctx, 767 "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n", 768 io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0], 769 refcount, rdata->ids.port_id); 770 771 goto drop_rdata_kref; 772 } 773 774 rc = fc_block_scsi_eh(sc_cmd); 775 if (rc) 776 goto drop_rdata_kref; 777 778 if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) { 779 QEDF_ERR(&qedf->dbg_ctx, 780 "Connection uploading, xid=0x%x., port_id=%06x\n", 781 io_req->xid, rdata->ids.port_id); 782 while (io_req->sc_cmd && (wait_count != 0)) { 783 msleep(100); 784 wait_count--; 785 } 786 if (wait_count) { 787 QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n"); 788 rc = SUCCESS; 789 } else { 790 QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n"); 791 rc = FAILED; 792 } 793 goto drop_rdata_kref; 794 } 795 796 if (lport->state != LPORT_ST_READY || !(lport->link_up)) { 797 QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n"); 798 goto drop_rdata_kref; 799 } 800 801 QEDF_ERR(&qedf->dbg_ctx, 802 "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n", 803 io_req, sc_cmd, io_req->xid, io_req->fp_idx, 804 rdata->ids.port_id); 805 806 if (qedf->stop_io_on_error) { 807 qedf_stop_all_io(qedf); 808 rc = SUCCESS; 809 goto drop_rdata_kref; 810 } 811 812 init_completion(&io_req->abts_done); 813 rval = qedf_initiate_abts(io_req, true); 814 if (rval) { 815 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n"); 816 /* 817 * If we fail to queue the ABTS then return this command to 818 * the SCSI layer as it will own and free the xid 819 */ 820 rc = SUCCESS; 821 qedf_scsi_done(qedf, io_req, DID_ERROR); 822 goto drop_rdata_kref; 823 } 824 825 wait_for_completion(&io_req->abts_done); 826 827 if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS || 828 io_req->event == QEDF_IOREQ_EV_ABORT_FAILED || 829 io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) { 830 /* 831 * If we get a reponse to the abort this is success from 832 * the perspective that all references to the command have 833 * been removed from the driver and firmware 834 */ 835 rc = SUCCESS; 836 } else { 837 /* If the abort and cleanup failed then return a failure */ 838 rc = FAILED; 839 } 840 841 if (rc == SUCCESS) 842 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n", 843 io_req->xid); 844 else 845 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n", 846 io_req->xid); 847 848 drop_rdata_kref: 849 kref_put(&rdata->kref, fc_rport_destroy); 850 out: 851 if (got_ref) 852 kref_put(&io_req->refcount, qedf_release_cmd); 853 return rc; 854 } 855 856 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd) 857 { 858 QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...", 859 sc_cmd->device->host->host_no, sc_cmd->device->id, 860 sc_cmd->device->lun); 861 return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET); 862 } 863 864 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd) 865 { 866 QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ", 867 sc_cmd->device->host->host_no, sc_cmd->device->id, 868 sc_cmd->device->lun); 869 return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET); 870 } 871 872 bool qedf_wait_for_upload(struct qedf_ctx *qedf) 873 { 874 struct qedf_rport *fcport = NULL; 875 int wait_cnt = 120; 876 877 while (wait_cnt--) { 878 if (atomic_read(&qedf->num_offloads)) 879 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 880 "Waiting for all uploads to complete num_offloads = 0x%x.\n", 881 atomic_read(&qedf->num_offloads)); 882 else 883 return true; 884 msleep(500); 885 } 886 887 rcu_read_lock(); 888 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 889 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, 890 &fcport->flags)) { 891 if (fcport->rdata) 892 QEDF_ERR(&qedf->dbg_ctx, 893 "Waiting for fcport %p portid=%06x.\n", 894 fcport, fcport->rdata->ids.port_id); 895 } else { 896 QEDF_ERR(&qedf->dbg_ctx, 897 "Waiting for fcport %p.\n", fcport); 898 } 899 } 900 rcu_read_unlock(); 901 return false; 902 903 } 904 905 /* Performs soft reset of qedf_ctx by simulating a link down/up */ 906 void qedf_ctx_soft_reset(struct fc_lport *lport) 907 { 908 struct qedf_ctx *qedf; 909 struct qed_link_output if_link; 910 911 if (lport->vport) { 912 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n"); 913 return; 914 } 915 916 qedf = lport_priv(lport); 917 918 qedf->flogi_pending = 0; 919 /* For host reset, essentially do a soft link up/down */ 920 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 921 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 922 "Queuing link down work.\n"); 923 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 924 0); 925 926 if (qedf_wait_for_upload(qedf) == false) { 927 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 928 WARN_ON(atomic_read(&qedf->num_offloads)); 929 } 930 931 /* Before setting link up query physical link state */ 932 qed_ops->common->get_link(qedf->cdev, &if_link); 933 /* Bail if the physical link is not up */ 934 if (!if_link.link_up) { 935 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 936 "Physical link is not up.\n"); 937 return; 938 } 939 /* Flush and wait to make sure link down is processed */ 940 flush_delayed_work(&qedf->link_update); 941 msleep(500); 942 943 atomic_set(&qedf->link_state, QEDF_LINK_UP); 944 qedf->vlan_id = 0; 945 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 946 "Queue link up work.\n"); 947 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 948 0); 949 } 950 951 /* Reset the host by gracefully logging out and then logging back in */ 952 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd) 953 { 954 struct fc_lport *lport; 955 struct qedf_ctx *qedf; 956 957 lport = shost_priv(sc_cmd->device->host); 958 qedf = lport_priv(lport); 959 960 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN || 961 test_bit(QEDF_UNLOADING, &qedf->flags)) 962 return FAILED; 963 964 QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued..."); 965 966 qedf_ctx_soft_reset(lport); 967 968 return SUCCESS; 969 } 970 971 static int qedf_slave_configure(struct scsi_device *sdev) 972 { 973 if (qedf_queue_depth) { 974 scsi_change_queue_depth(sdev, qedf_queue_depth); 975 } 976 977 return 0; 978 } 979 980 static struct scsi_host_template qedf_host_template = { 981 .module = THIS_MODULE, 982 .name = QEDF_MODULE_NAME, 983 .this_id = -1, 984 .cmd_per_lun = 32, 985 .max_sectors = 0xffff, 986 .queuecommand = qedf_queuecommand, 987 .shost_attrs = qedf_host_attrs, 988 .eh_abort_handler = qedf_eh_abort, 989 .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */ 990 .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */ 991 .eh_host_reset_handler = qedf_eh_host_reset, 992 .slave_configure = qedf_slave_configure, 993 .dma_boundary = QED_HW_DMA_BOUNDARY, 994 .sg_tablesize = QEDF_MAX_BDS_PER_CMD, 995 .can_queue = FCOE_PARAMS_NUM_TASKS, 996 .change_queue_depth = scsi_change_queue_depth, 997 }; 998 999 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen) 1000 { 1001 int rc; 1002 1003 spin_lock(&qedf_global_lock); 1004 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global); 1005 spin_unlock(&qedf_global_lock); 1006 1007 return rc; 1008 } 1009 1010 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id) 1011 { 1012 struct qedf_rport *fcport; 1013 struct fc_rport_priv *rdata; 1014 1015 rcu_read_lock(); 1016 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 1017 rdata = fcport->rdata; 1018 if (rdata == NULL) 1019 continue; 1020 if (rdata->ids.port_id == port_id) { 1021 rcu_read_unlock(); 1022 return fcport; 1023 } 1024 } 1025 rcu_read_unlock(); 1026 1027 /* Return NULL to caller to let them know fcport was not found */ 1028 return NULL; 1029 } 1030 1031 /* Transmits an ELS frame over an offloaded session */ 1032 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp) 1033 { 1034 struct fc_frame_header *fh; 1035 int rc = 0; 1036 1037 fh = fc_frame_header_get(fp); 1038 if ((fh->fh_type == FC_TYPE_ELS) && 1039 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 1040 switch (fc_frame_payload_op(fp)) { 1041 case ELS_ADISC: 1042 qedf_send_adisc(fcport, fp); 1043 rc = 1; 1044 break; 1045 } 1046 } 1047 1048 return rc; 1049 } 1050 1051 /* 1052 * qedf_xmit - qedf FCoE frame transmit function 1053 */ 1054 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp) 1055 { 1056 struct fc_lport *base_lport; 1057 struct qedf_ctx *qedf; 1058 struct ethhdr *eh; 1059 struct fcoe_crc_eof *cp; 1060 struct sk_buff *skb; 1061 struct fc_frame_header *fh; 1062 struct fcoe_hdr *hp; 1063 u8 sof, eof; 1064 u32 crc; 1065 unsigned int hlen, tlen, elen; 1066 int wlen; 1067 struct fc_stats *stats; 1068 struct fc_lport *tmp_lport; 1069 struct fc_lport *vn_port = NULL; 1070 struct qedf_rport *fcport; 1071 int rc; 1072 u16 vlan_tci = 0; 1073 1074 qedf = (struct qedf_ctx *)lport_priv(lport); 1075 1076 fh = fc_frame_header_get(fp); 1077 skb = fp_skb(fp); 1078 1079 /* Filter out traffic to other NPIV ports on the same host */ 1080 if (lport->vport) 1081 base_lport = shost_priv(vport_to_shost(lport->vport)); 1082 else 1083 base_lport = lport; 1084 1085 /* Flag if the destination is the base port */ 1086 if (base_lport->port_id == ntoh24(fh->fh_d_id)) { 1087 vn_port = base_lport; 1088 } else { 1089 /* Got through the list of vports attached to the base_lport 1090 * and see if we have a match with the destination address. 1091 */ 1092 list_for_each_entry(tmp_lport, &base_lport->vports, list) { 1093 if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) { 1094 vn_port = tmp_lport; 1095 break; 1096 } 1097 } 1098 } 1099 if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) { 1100 struct fc_rport_priv *rdata = NULL; 1101 1102 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 1103 "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id)); 1104 kfree_skb(skb); 1105 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id)); 1106 if (rdata) { 1107 rdata->retries = lport->max_rport_retry_count; 1108 kref_put(&rdata->kref, fc_rport_destroy); 1109 } 1110 return -EINVAL; 1111 } 1112 /* End NPIV filtering */ 1113 1114 if (!qedf->ctlr.sel_fcf) { 1115 kfree_skb(skb); 1116 return 0; 1117 } 1118 1119 if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) { 1120 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n"); 1121 kfree_skb(skb); 1122 return 0; 1123 } 1124 1125 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 1126 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n"); 1127 kfree_skb(skb); 1128 return 0; 1129 } 1130 1131 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 1132 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb)) 1133 return 0; 1134 } 1135 1136 /* Check to see if this needs to be sent on an offloaded session */ 1137 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 1138 1139 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1140 rc = qedf_xmit_l2_frame(fcport, fp); 1141 /* 1142 * If the frame was successfully sent over the middle path 1143 * then do not try to also send it over the LL2 path 1144 */ 1145 if (rc) 1146 return 0; 1147 } 1148 1149 sof = fr_sof(fp); 1150 eof = fr_eof(fp); 1151 1152 elen = sizeof(struct ethhdr); 1153 hlen = sizeof(struct fcoe_hdr); 1154 tlen = sizeof(struct fcoe_crc_eof); 1155 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; 1156 1157 skb->ip_summed = CHECKSUM_NONE; 1158 crc = fcoe_fc_crc(fp); 1159 1160 /* copy port crc and eof to the skb buff */ 1161 if (skb_is_nonlinear(skb)) { 1162 skb_frag_t *frag; 1163 1164 if (qedf_get_paged_crc_eof(skb, tlen)) { 1165 kfree_skb(skb); 1166 return -ENOMEM; 1167 } 1168 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; 1169 cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag); 1170 } else { 1171 cp = skb_put(skb, tlen); 1172 } 1173 1174 memset(cp, 0, sizeof(*cp)); 1175 cp->fcoe_eof = eof; 1176 cp->fcoe_crc32 = cpu_to_le32(~crc); 1177 if (skb_is_nonlinear(skb)) { 1178 kunmap_atomic(cp); 1179 cp = NULL; 1180 } 1181 1182 1183 /* adjust skb network/transport offsets to match mac/fcoe/port */ 1184 skb_push(skb, elen + hlen); 1185 skb_reset_mac_header(skb); 1186 skb_reset_network_header(skb); 1187 skb->mac_len = elen; 1188 skb->protocol = htons(ETH_P_FCOE); 1189 1190 /* 1191 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN 1192 * for FIP/FCoE traffic. 1193 */ 1194 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id); 1195 1196 /* fill up mac and fcoe headers */ 1197 eh = eth_hdr(skb); 1198 eh->h_proto = htons(ETH_P_FCOE); 1199 if (qedf->ctlr.map_dest) 1200 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); 1201 else 1202 /* insert GW address */ 1203 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr); 1204 1205 /* Set the source MAC address */ 1206 ether_addr_copy(eh->h_source, qedf->data_src_addr); 1207 1208 hp = (struct fcoe_hdr *)(eh + 1); 1209 memset(hp, 0, sizeof(*hp)); 1210 if (FC_FCOE_VER) 1211 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); 1212 hp->fcoe_sof = sof; 1213 1214 /*update tx stats */ 1215 stats = per_cpu_ptr(lport->stats, get_cpu()); 1216 stats->TxFrames++; 1217 stats->TxWords += wlen; 1218 put_cpu(); 1219 1220 /* Get VLAN ID from skb for printing purposes */ 1221 __vlan_hwaccel_get_tag(skb, &vlan_tci); 1222 1223 /* send down to lld */ 1224 fr_dev(fp) = lport; 1225 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: " 1226 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n", 1227 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type, 1228 vlan_tci); 1229 if (qedf_dump_frames) 1230 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 1231 1, skb->data, skb->len, false); 1232 rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0); 1233 if (rc) { 1234 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc); 1235 kfree_skb(skb); 1236 return rc; 1237 } 1238 1239 return 0; 1240 } 1241 1242 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1243 { 1244 int rval = 0; 1245 u32 *pbl; 1246 dma_addr_t page; 1247 int num_pages; 1248 1249 /* Calculate appropriate queue and PBL sizes */ 1250 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 1251 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE); 1252 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) * 1253 sizeof(void *); 1254 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE; 1255 1256 fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1257 &fcport->sq_dma, GFP_KERNEL); 1258 if (!fcport->sq) { 1259 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n"); 1260 rval = 1; 1261 goto out; 1262 } 1263 1264 fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 1265 fcport->sq_pbl_size, 1266 &fcport->sq_pbl_dma, GFP_KERNEL); 1267 if (!fcport->sq_pbl) { 1268 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n"); 1269 rval = 1; 1270 goto out_free_sq; 1271 } 1272 1273 /* Create PBL */ 1274 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE; 1275 page = fcport->sq_dma; 1276 pbl = (u32 *)fcport->sq_pbl; 1277 1278 while (num_pages--) { 1279 *pbl = U64_LO(page); 1280 pbl++; 1281 *pbl = U64_HI(page); 1282 pbl++; 1283 page += QEDF_PAGE_SIZE; 1284 } 1285 1286 return rval; 1287 1288 out_free_sq: 1289 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq, 1290 fcport->sq_dma); 1291 out: 1292 return rval; 1293 } 1294 1295 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1296 { 1297 if (fcport->sq_pbl) 1298 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size, 1299 fcport->sq_pbl, fcport->sq_pbl_dma); 1300 if (fcport->sq) 1301 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1302 fcport->sq, fcport->sq_dma); 1303 } 1304 1305 static int qedf_offload_connection(struct qedf_ctx *qedf, 1306 struct qedf_rport *fcport) 1307 { 1308 struct qed_fcoe_params_offload conn_info; 1309 u32 port_id; 1310 int rval; 1311 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe)); 1312 1313 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection " 1314 "portid=%06x.\n", fcport->rdata->ids.port_id); 1315 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle, 1316 &fcport->fw_cid, &fcport->p_doorbell); 1317 if (rval) { 1318 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection " 1319 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1320 rval = 1; /* For some reason qed returns 0 on failure here */ 1321 goto out; 1322 } 1323 1324 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x " 1325 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id, 1326 fcport->fw_cid, fcport->handle); 1327 1328 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload)); 1329 1330 /* Fill in the offload connection info */ 1331 conn_info.sq_pbl_addr = fcport->sq_pbl_dma; 1332 1333 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl); 1334 conn_info.sq_next_page_addr = 1335 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8)); 1336 1337 /* Need to use our FCoE MAC for the offload session */ 1338 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr); 1339 1340 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr); 1341 1342 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size; 1343 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov; 1344 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */ 1345 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size; 1346 1347 /* Set VLAN data */ 1348 conn_info.vlan_tag = qedf->vlan_id << 1349 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT; 1350 conn_info.vlan_tag |= 1351 qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT; 1352 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK << 1353 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT); 1354 1355 /* Set host port source id */ 1356 port_id = fc_host_port_id(qedf->lport->host); 1357 fcport->sid = port_id; 1358 conn_info.s_id.addr_hi = (port_id & 0x000000FF); 1359 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1360 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1361 1362 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq; 1363 1364 /* Set remote port destination id */ 1365 port_id = fcport->rdata->rport->port_id; 1366 conn_info.d_id.addr_hi = (port_id & 0x000000FF); 1367 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1368 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1369 1370 conn_info.def_q_idx = 0; /* Default index for send queue? */ 1371 1372 /* Set FC-TAPE specific flags if needed */ 1373 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) { 1374 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, 1375 "Enable CONF, REC for portid=%06x.\n", 1376 fcport->rdata->ids.port_id); 1377 conn_info.flags |= 1 << 1378 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT; 1379 conn_info.flags |= 1380 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) << 1381 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT; 1382 } 1383 1384 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info); 1385 if (rval) { 1386 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection " 1387 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1388 goto out_free_conn; 1389 } else 1390 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload " 1391 "succeeded portid=%06x total_sqe=%d.\n", 1392 fcport->rdata->ids.port_id, total_sqe); 1393 1394 spin_lock_init(&fcport->rport_lock); 1395 atomic_set(&fcport->free_sqes, total_sqe); 1396 return 0; 1397 out_free_conn: 1398 qed_ops->release_conn(qedf->cdev, fcport->handle); 1399 out: 1400 return rval; 1401 } 1402 1403 #define QEDF_TERM_BUFF_SIZE 10 1404 static void qedf_upload_connection(struct qedf_ctx *qedf, 1405 struct qedf_rport *fcport) 1406 { 1407 void *term_params; 1408 dma_addr_t term_params_dma; 1409 1410 /* Term params needs to be a DMA coherent buffer as qed shared the 1411 * physical DMA address with the firmware. The buffer may be used in 1412 * the receive path so we may eventually have to move this. 1413 */ 1414 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, 1415 &term_params_dma, GFP_KERNEL); 1416 1417 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection " 1418 "port_id=%06x.\n", fcport->rdata->ids.port_id); 1419 1420 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma); 1421 qed_ops->release_conn(qedf->cdev, fcport->handle); 1422 1423 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params, 1424 term_params_dma); 1425 } 1426 1427 static void qedf_cleanup_fcport(struct qedf_ctx *qedf, 1428 struct qedf_rport *fcport) 1429 { 1430 struct fc_rport_priv *rdata = fcport->rdata; 1431 1432 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n", 1433 fcport->rdata->ids.port_id); 1434 1435 /* Flush any remaining i/o's before we upload the connection */ 1436 qedf_flush_active_ios(fcport, -1); 1437 1438 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) 1439 qedf_upload_connection(qedf, fcport); 1440 qedf_free_sq(qedf, fcport); 1441 fcport->rdata = NULL; 1442 fcport->qedf = NULL; 1443 kref_put(&rdata->kref, fc_rport_destroy); 1444 } 1445 1446 /* 1447 * This event_callback is called after successful completion of libfc 1448 * initiated target login. qedf can proceed with initiating the session 1449 * establishment. 1450 */ 1451 static void qedf_rport_event_handler(struct fc_lport *lport, 1452 struct fc_rport_priv *rdata, 1453 enum fc_rport_event event) 1454 { 1455 struct qedf_ctx *qedf = lport_priv(lport); 1456 struct fc_rport *rport = rdata->rport; 1457 struct fc_rport_libfc_priv *rp; 1458 struct qedf_rport *fcport; 1459 u32 port_id; 1460 int rval; 1461 unsigned long flags; 1462 1463 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, " 1464 "port_id = 0x%x\n", event, rdata->ids.port_id); 1465 1466 switch (event) { 1467 case RPORT_EV_READY: 1468 if (!rport) { 1469 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n"); 1470 break; 1471 } 1472 1473 rp = rport->dd_data; 1474 fcport = (struct qedf_rport *)&rp[1]; 1475 fcport->qedf = qedf; 1476 1477 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) { 1478 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading " 1479 "portid=0x%x as max number of offloaded sessions " 1480 "reached.\n", rdata->ids.port_id); 1481 return; 1482 } 1483 1484 /* 1485 * Don't try to offload the session again. Can happen when we 1486 * get an ADISC 1487 */ 1488 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1489 QEDF_WARN(&(qedf->dbg_ctx), "Session already " 1490 "offloaded, portid=0x%x.\n", 1491 rdata->ids.port_id); 1492 return; 1493 } 1494 1495 if (rport->port_id == FC_FID_DIR_SERV) { 1496 /* 1497 * qedf_rport structure doesn't exist for 1498 * directory server. 1499 * We should not come here, as lport will 1500 * take care of fabric login 1501 */ 1502 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not " 1503 "exist for dir server port_id=%x\n", 1504 rdata->ids.port_id); 1505 break; 1506 } 1507 1508 if (rdata->spp_type != FC_TYPE_FCP) { 1509 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1510 "Not offloading since spp type isn't FCP\n"); 1511 break; 1512 } 1513 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1514 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1515 "Not FCP target so not offloading\n"); 1516 break; 1517 } 1518 1519 /* Initial reference held on entry, so this can't fail */ 1520 kref_get(&rdata->kref); 1521 fcport->rdata = rdata; 1522 fcport->rport = rport; 1523 1524 rval = qedf_alloc_sq(qedf, fcport); 1525 if (rval) { 1526 qedf_cleanup_fcport(qedf, fcport); 1527 break; 1528 } 1529 1530 /* Set device type */ 1531 if (rdata->flags & FC_RP_FLAGS_RETRY && 1532 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET && 1533 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) { 1534 fcport->dev_type = QEDF_RPORT_TYPE_TAPE; 1535 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1536 "portid=%06x is a TAPE device.\n", 1537 rdata->ids.port_id); 1538 } else { 1539 fcport->dev_type = QEDF_RPORT_TYPE_DISK; 1540 } 1541 1542 rval = qedf_offload_connection(qedf, fcport); 1543 if (rval) { 1544 qedf_cleanup_fcport(qedf, fcport); 1545 break; 1546 } 1547 1548 /* Add fcport to list of qedf_ctx list of offloaded ports */ 1549 spin_lock_irqsave(&qedf->hba_lock, flags); 1550 list_add_rcu(&fcport->peers, &qedf->fcports); 1551 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1552 1553 /* 1554 * Set the session ready bit to let everyone know that this 1555 * connection is ready for I/O 1556 */ 1557 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags); 1558 atomic_inc(&qedf->num_offloads); 1559 1560 break; 1561 case RPORT_EV_LOGO: 1562 case RPORT_EV_FAILED: 1563 case RPORT_EV_STOP: 1564 port_id = rdata->ids.port_id; 1565 if (port_id == FC_FID_DIR_SERV) 1566 break; 1567 1568 if (rdata->spp_type != FC_TYPE_FCP) { 1569 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1570 "No action since spp type isn't FCP\n"); 1571 break; 1572 } 1573 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1574 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1575 "Not FCP target so no action\n"); 1576 break; 1577 } 1578 1579 if (!rport) { 1580 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1581 "port_id=%x - rport notcreated Yet!!\n", port_id); 1582 break; 1583 } 1584 rp = rport->dd_data; 1585 /* 1586 * Perform session upload. Note that rdata->peers is already 1587 * removed from disc->rports list before we get this event. 1588 */ 1589 fcport = (struct qedf_rport *)&rp[1]; 1590 1591 spin_lock_irqsave(&fcport->rport_lock, flags); 1592 /* Only free this fcport if it is offloaded already */ 1593 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) && 1594 !test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1595 &fcport->flags)) { 1596 set_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1597 &fcport->flags); 1598 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1599 qedf_cleanup_fcport(qedf, fcport); 1600 /* 1601 * Remove fcport to list of qedf_ctx list of offloaded 1602 * ports 1603 */ 1604 spin_lock_irqsave(&qedf->hba_lock, flags); 1605 list_del_rcu(&fcport->peers); 1606 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1607 1608 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1609 &fcport->flags); 1610 atomic_dec(&qedf->num_offloads); 1611 } else { 1612 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1613 } 1614 break; 1615 1616 case RPORT_EV_NONE: 1617 break; 1618 } 1619 } 1620 1621 static void qedf_abort_io(struct fc_lport *lport) 1622 { 1623 /* NO-OP but need to fill in the template */ 1624 } 1625 1626 static void qedf_fcp_cleanup(struct fc_lport *lport) 1627 { 1628 /* 1629 * NO-OP but need to fill in template to prevent a NULL 1630 * function pointer dereference during link down. I/Os 1631 * will be flushed when port is uploaded. 1632 */ 1633 } 1634 1635 static struct libfc_function_template qedf_lport_template = { 1636 .frame_send = qedf_xmit, 1637 .fcp_abort_io = qedf_abort_io, 1638 .fcp_cleanup = qedf_fcp_cleanup, 1639 .rport_event_callback = qedf_rport_event_handler, 1640 .elsct_send = qedf_elsct_send, 1641 }; 1642 1643 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf) 1644 { 1645 fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO); 1646 1647 qedf->ctlr.send = qedf_fip_send; 1648 qedf->ctlr.get_src_addr = qedf_get_src_mac; 1649 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac); 1650 } 1651 1652 static void qedf_setup_fdmi(struct qedf_ctx *qedf) 1653 { 1654 struct fc_lport *lport = qedf->lport; 1655 u8 buf[8]; 1656 int pos; 1657 uint32_t i; 1658 1659 /* 1660 * fdmi_enabled needs to be set for libfc 1661 * to execute FDMI registration 1662 */ 1663 lport->fdmi_enabled = 1; 1664 1665 /* 1666 * Setup the necessary fc_host attributes to that will be used to fill 1667 * in the FDMI information. 1668 */ 1669 1670 /* Get the PCI-e Device Serial Number Capability */ 1671 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN); 1672 if (pos) { 1673 pos += 4; 1674 for (i = 0; i < 8; i++) 1675 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]); 1676 1677 snprintf(fc_host_serial_number(lport->host), 1678 FC_SERIAL_NUMBER_SIZE, 1679 "%02X%02X%02X%02X%02X%02X%02X%02X", 1680 buf[7], buf[6], buf[5], buf[4], 1681 buf[3], buf[2], buf[1], buf[0]); 1682 } else 1683 snprintf(fc_host_serial_number(lport->host), 1684 FC_SERIAL_NUMBER_SIZE, "Unknown"); 1685 1686 snprintf(fc_host_manufacturer(lport->host), 1687 FC_SERIAL_NUMBER_SIZE, "%s", "Marvell Semiconductor Inc."); 1688 1689 if (qedf->pdev->device == QL45xxx) { 1690 snprintf(fc_host_model(lport->host), 1691 FC_SYMBOLIC_NAME_SIZE, "%s", "QL45xxx"); 1692 1693 snprintf(fc_host_model_description(lport->host), 1694 FC_SYMBOLIC_NAME_SIZE, "%s", 1695 "Marvell FastLinQ QL45xxx FCoE Adapter"); 1696 } 1697 1698 if (qedf->pdev->device == QL41xxx) { 1699 snprintf(fc_host_model(lport->host), 1700 FC_SYMBOLIC_NAME_SIZE, "%s", "QL41xxx"); 1701 1702 snprintf(fc_host_model_description(lport->host), 1703 FC_SYMBOLIC_NAME_SIZE, "%s", 1704 "Marvell FastLinQ QL41xxx FCoE Adapter"); 1705 } 1706 1707 snprintf(fc_host_hardware_version(lport->host), 1708 FC_VERSION_STRING_SIZE, "Rev %d", qedf->pdev->revision); 1709 1710 snprintf(fc_host_driver_version(lport->host), 1711 FC_VERSION_STRING_SIZE, "%s", QEDF_VERSION); 1712 1713 snprintf(fc_host_firmware_version(lport->host), 1714 FC_VERSION_STRING_SIZE, "%d.%d.%d.%d", 1715 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 1716 FW_ENGINEERING_VERSION); 1717 1718 } 1719 1720 static int qedf_lport_setup(struct qedf_ctx *qedf) 1721 { 1722 struct fc_lport *lport = qedf->lport; 1723 1724 lport->link_up = 0; 1725 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1726 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1727 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1728 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1729 lport->boot_time = jiffies; 1730 lport->e_d_tov = 2 * 1000; 1731 lport->r_a_tov = 10 * 1000; 1732 1733 /* Set NPIV support */ 1734 lport->does_npiv = 1; 1735 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV; 1736 1737 fc_set_wwnn(lport, qedf->wwnn); 1738 fc_set_wwpn(lport, qedf->wwpn); 1739 1740 if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) { 1741 QEDF_ERR(&qedf->dbg_ctx, 1742 "fcoe_libfc_config failed.\n"); 1743 return -ENOMEM; 1744 } 1745 1746 /* Allocate the exchange manager */ 1747 fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS, 1748 0xfffe, NULL); 1749 1750 if (fc_lport_init_stats(lport)) 1751 return -ENOMEM; 1752 1753 /* Finish lport config */ 1754 fc_lport_config(lport); 1755 1756 /* Set max frame size */ 1757 fc_set_mfs(lport, QEDF_MFS); 1758 fc_host_maxframe_size(lport->host) = lport->mfs; 1759 1760 /* Set default dev_loss_tmo based on module parameter */ 1761 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo; 1762 1763 /* Set symbolic node name */ 1764 if (qedf->pdev->device == QL45xxx) 1765 snprintf(fc_host_symbolic_name(lport->host), 256, 1766 "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION); 1767 1768 if (qedf->pdev->device == QL41xxx) 1769 snprintf(fc_host_symbolic_name(lport->host), 256, 1770 "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION); 1771 1772 qedf_setup_fdmi(qedf); 1773 1774 return 0; 1775 } 1776 1777 /* 1778 * NPIV functions 1779 */ 1780 1781 static int qedf_vport_libfc_config(struct fc_vport *vport, 1782 struct fc_lport *lport) 1783 { 1784 lport->link_up = 0; 1785 lport->qfull = 0; 1786 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1787 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1788 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1789 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1790 lport->boot_time = jiffies; 1791 lport->e_d_tov = 2 * 1000; 1792 lport->r_a_tov = 10 * 1000; 1793 lport->does_npiv = 1; /* Temporary until we add NPIV support */ 1794 1795 /* Allocate stats for vport */ 1796 if (fc_lport_init_stats(lport)) 1797 return -ENOMEM; 1798 1799 /* Finish lport config */ 1800 fc_lport_config(lport); 1801 1802 /* offload related configuration */ 1803 lport->crc_offload = 0; 1804 lport->seq_offload = 0; 1805 lport->lro_enabled = 0; 1806 lport->lro_xid = 0; 1807 lport->lso_max = 0; 1808 1809 return 0; 1810 } 1811 1812 static int qedf_vport_create(struct fc_vport *vport, bool disabled) 1813 { 1814 struct Scsi_Host *shost = vport_to_shost(vport); 1815 struct fc_lport *n_port = shost_priv(shost); 1816 struct fc_lport *vn_port; 1817 struct qedf_ctx *base_qedf = lport_priv(n_port); 1818 struct qedf_ctx *vport_qedf; 1819 1820 char buf[32]; 1821 int rc = 0; 1822 1823 rc = fcoe_validate_vport_create(vport); 1824 if (rc) { 1825 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1826 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, " 1827 "WWPN (0x%s) already exists.\n", buf); 1828 goto err1; 1829 } 1830 1831 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) { 1832 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport " 1833 "because link is not up.\n"); 1834 rc = -EIO; 1835 goto err1; 1836 } 1837 1838 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx)); 1839 if (!vn_port) { 1840 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport " 1841 "for vport.\n"); 1842 rc = -ENOMEM; 1843 goto err1; 1844 } 1845 1846 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1847 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n", 1848 buf); 1849 1850 /* Copy some fields from base_qedf */ 1851 vport_qedf = lport_priv(vn_port); 1852 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx)); 1853 1854 /* Set qedf data specific to this vport */ 1855 vport_qedf->lport = vn_port; 1856 /* Use same hba_lock as base_qedf */ 1857 vport_qedf->hba_lock = base_qedf->hba_lock; 1858 vport_qedf->pdev = base_qedf->pdev; 1859 vport_qedf->cmd_mgr = base_qedf->cmd_mgr; 1860 init_completion(&vport_qedf->flogi_compl); 1861 INIT_LIST_HEAD(&vport_qedf->fcports); 1862 1863 rc = qedf_vport_libfc_config(vport, vn_port); 1864 if (rc) { 1865 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory " 1866 "for lport stats.\n"); 1867 goto err2; 1868 } 1869 1870 fc_set_wwnn(vn_port, vport->node_name); 1871 fc_set_wwpn(vn_port, vport->port_name); 1872 vport_qedf->wwnn = vn_port->wwnn; 1873 vport_qedf->wwpn = vn_port->wwpn; 1874 1875 vn_port->host->transportt = qedf_fc_vport_transport_template; 1876 vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS; 1877 vn_port->host->max_lun = qedf_max_lun; 1878 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD; 1879 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN; 1880 1881 rc = scsi_add_host(vn_port->host, &vport->dev); 1882 if (rc) { 1883 QEDF_WARN(&base_qedf->dbg_ctx, 1884 "Error adding Scsi_Host rc=0x%x.\n", rc); 1885 goto err2; 1886 } 1887 1888 /* Set default dev_loss_tmo based on module parameter */ 1889 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo; 1890 1891 /* Init libfc stuffs */ 1892 memcpy(&vn_port->tt, &qedf_lport_template, 1893 sizeof(qedf_lport_template)); 1894 fc_exch_init(vn_port); 1895 fc_elsct_init(vn_port); 1896 fc_lport_init(vn_port); 1897 fc_disc_init(vn_port); 1898 fc_disc_config(vn_port, vn_port); 1899 1900 1901 /* Allocate the exchange manager */ 1902 shost = vport_to_shost(vport); 1903 n_port = shost_priv(shost); 1904 fc_exch_mgr_list_clone(n_port, vn_port); 1905 1906 /* Set max frame size */ 1907 fc_set_mfs(vn_port, QEDF_MFS); 1908 1909 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN; 1910 1911 if (disabled) { 1912 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1913 } else { 1914 vn_port->boot_time = jiffies; 1915 fc_fabric_login(vn_port); 1916 fc_vport_setlink(vn_port); 1917 } 1918 1919 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n", 1920 vn_port); 1921 1922 /* Set up debug context for vport */ 1923 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no; 1924 vport_qedf->dbg_ctx.pdev = base_qedf->pdev; 1925 1926 err2: 1927 scsi_host_put(vn_port->host); 1928 err1: 1929 return rc; 1930 } 1931 1932 static int qedf_vport_destroy(struct fc_vport *vport) 1933 { 1934 struct Scsi_Host *shost = vport_to_shost(vport); 1935 struct fc_lport *n_port = shost_priv(shost); 1936 struct fc_lport *vn_port = vport->dd_data; 1937 struct qedf_ctx *qedf = lport_priv(vn_port); 1938 1939 if (!qedf) { 1940 QEDF_ERR(NULL, "qedf is NULL.\n"); 1941 goto out; 1942 } 1943 1944 /* Set unloading bit on vport qedf_ctx to prevent more I/O */ 1945 set_bit(QEDF_UNLOADING, &qedf->flags); 1946 1947 mutex_lock(&n_port->lp_mutex); 1948 list_del(&vn_port->list); 1949 mutex_unlock(&n_port->lp_mutex); 1950 1951 fc_fabric_logoff(vn_port); 1952 fc_lport_destroy(vn_port); 1953 1954 /* Detach from scsi-ml */ 1955 fc_remove_host(vn_port->host); 1956 scsi_remove_host(vn_port->host); 1957 1958 /* 1959 * Only try to release the exchange manager if the vn_port 1960 * configuration is complete. 1961 */ 1962 if (vn_port->state == LPORT_ST_READY) 1963 fc_exch_mgr_free(vn_port); 1964 1965 /* Free memory used by statistical counters */ 1966 fc_lport_free_stats(vn_port); 1967 1968 /* Release Scsi_Host */ 1969 if (vn_port->host) 1970 scsi_host_put(vn_port->host); 1971 1972 out: 1973 return 0; 1974 } 1975 1976 static int qedf_vport_disable(struct fc_vport *vport, bool disable) 1977 { 1978 struct fc_lport *lport = vport->dd_data; 1979 1980 if (disable) { 1981 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1982 fc_fabric_logoff(lport); 1983 } else { 1984 lport->boot_time = jiffies; 1985 fc_fabric_login(lport); 1986 fc_vport_setlink(lport); 1987 } 1988 return 0; 1989 } 1990 1991 /* 1992 * During removal we need to wait for all the vports associated with a port 1993 * to be destroyed so we avoid a race condition where libfc is still trying 1994 * to reap vports while the driver remove function has already reaped the 1995 * driver contexts associated with the physical port. 1996 */ 1997 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf) 1998 { 1999 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host); 2000 2001 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 2002 "Entered.\n"); 2003 while (fc_host->npiv_vports_inuse > 0) { 2004 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 2005 "Waiting for all vports to be reaped.\n"); 2006 msleep(1000); 2007 } 2008 } 2009 2010 /** 2011 * qedf_fcoe_reset - Resets the fcoe 2012 * 2013 * @shost: shost the reset is from 2014 * 2015 * Returns: always 0 2016 */ 2017 static int qedf_fcoe_reset(struct Scsi_Host *shost) 2018 { 2019 struct fc_lport *lport = shost_priv(shost); 2020 2021 qedf_ctx_soft_reset(lport); 2022 return 0; 2023 } 2024 2025 static void qedf_get_host_port_id(struct Scsi_Host *shost) 2026 { 2027 struct fc_lport *lport = shost_priv(shost); 2028 2029 fc_host_port_id(shost) = lport->port_id; 2030 } 2031 2032 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host 2033 *shost) 2034 { 2035 struct fc_host_statistics *qedf_stats; 2036 struct fc_lport *lport = shost_priv(shost); 2037 struct qedf_ctx *qedf = lport_priv(lport); 2038 struct qed_fcoe_stats *fw_fcoe_stats; 2039 2040 qedf_stats = fc_get_host_stats(shost); 2041 2042 /* We don't collect offload stats for specific NPIV ports */ 2043 if (lport->vport) 2044 goto out; 2045 2046 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL); 2047 if (!fw_fcoe_stats) { 2048 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for " 2049 "fw_fcoe_stats.\n"); 2050 goto out; 2051 } 2052 2053 mutex_lock(&qedf->stats_mutex); 2054 2055 /* Query firmware for offload stats */ 2056 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats); 2057 2058 /* 2059 * The expectation is that we add our offload stats to the stats 2060 * being maintained by libfc each time the fc_get_host_status callback 2061 * is invoked. The additions are not carried over for each call to 2062 * the fc_get_host_stats callback. 2063 */ 2064 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt + 2065 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt + 2066 fw_fcoe_stats->fcoe_tx_other_pkt_cnt; 2067 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt + 2068 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt + 2069 fw_fcoe_stats->fcoe_rx_other_pkt_cnt; 2070 qedf_stats->fcp_input_megabytes += 2071 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000); 2072 qedf_stats->fcp_output_megabytes += 2073 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000); 2074 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4; 2075 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4; 2076 qedf_stats->invalid_crc_count += 2077 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt; 2078 qedf_stats->dumped_frames = 2079 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 2080 qedf_stats->error_frames += 2081 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 2082 qedf_stats->fcp_input_requests += qedf->input_requests; 2083 qedf_stats->fcp_output_requests += qedf->output_requests; 2084 qedf_stats->fcp_control_requests += qedf->control_requests; 2085 qedf_stats->fcp_packet_aborts += qedf->packet_aborts; 2086 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures; 2087 2088 mutex_unlock(&qedf->stats_mutex); 2089 kfree(fw_fcoe_stats); 2090 out: 2091 return qedf_stats; 2092 } 2093 2094 static struct fc_function_template qedf_fc_transport_fn = { 2095 .show_host_node_name = 1, 2096 .show_host_port_name = 1, 2097 .show_host_supported_classes = 1, 2098 .show_host_supported_fc4s = 1, 2099 .show_host_active_fc4s = 1, 2100 .show_host_maxframe_size = 1, 2101 2102 .get_host_port_id = qedf_get_host_port_id, 2103 .show_host_port_id = 1, 2104 .show_host_supported_speeds = 1, 2105 .get_host_speed = fc_get_host_speed, 2106 .show_host_speed = 1, 2107 .show_host_port_type = 1, 2108 .get_host_port_state = fc_get_host_port_state, 2109 .show_host_port_state = 1, 2110 .show_host_symbolic_name = 1, 2111 2112 /* 2113 * Tell FC transport to allocate enough space to store the backpointer 2114 * for the associate qedf_rport struct. 2115 */ 2116 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2117 sizeof(struct qedf_rport)), 2118 .show_rport_maxframe_size = 1, 2119 .show_rport_supported_classes = 1, 2120 .show_host_fabric_name = 1, 2121 .show_starget_node_name = 1, 2122 .show_starget_port_name = 1, 2123 .show_starget_port_id = 1, 2124 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2125 .show_rport_dev_loss_tmo = 1, 2126 .get_fc_host_stats = qedf_fc_get_host_stats, 2127 .issue_fc_host_lip = qedf_fcoe_reset, 2128 .vport_create = qedf_vport_create, 2129 .vport_delete = qedf_vport_destroy, 2130 .vport_disable = qedf_vport_disable, 2131 .bsg_request = fc_lport_bsg_request, 2132 }; 2133 2134 static struct fc_function_template qedf_fc_vport_transport_fn = { 2135 .show_host_node_name = 1, 2136 .show_host_port_name = 1, 2137 .show_host_supported_classes = 1, 2138 .show_host_supported_fc4s = 1, 2139 .show_host_active_fc4s = 1, 2140 .show_host_maxframe_size = 1, 2141 .show_host_port_id = 1, 2142 .show_host_supported_speeds = 1, 2143 .get_host_speed = fc_get_host_speed, 2144 .show_host_speed = 1, 2145 .show_host_port_type = 1, 2146 .get_host_port_state = fc_get_host_port_state, 2147 .show_host_port_state = 1, 2148 .show_host_symbolic_name = 1, 2149 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2150 sizeof(struct qedf_rport)), 2151 .show_rport_maxframe_size = 1, 2152 .show_rport_supported_classes = 1, 2153 .show_host_fabric_name = 1, 2154 .show_starget_node_name = 1, 2155 .show_starget_port_name = 1, 2156 .show_starget_port_id = 1, 2157 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2158 .show_rport_dev_loss_tmo = 1, 2159 .get_fc_host_stats = fc_get_host_stats, 2160 .issue_fc_host_lip = qedf_fcoe_reset, 2161 .bsg_request = fc_lport_bsg_request, 2162 }; 2163 2164 static bool qedf_fp_has_work(struct qedf_fastpath *fp) 2165 { 2166 struct qedf_ctx *qedf = fp->qedf; 2167 struct global_queue *que; 2168 struct qed_sb_info *sb_info = fp->sb_info; 2169 struct status_block_e4 *sb = sb_info->sb_virt; 2170 u16 prod_idx; 2171 2172 /* Get the pointer to the global CQ this completion is on */ 2173 que = qedf->global_queues[fp->sb_id]; 2174 2175 /* Be sure all responses have been written to PI */ 2176 rmb(); 2177 2178 /* Get the current firmware producer index */ 2179 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2180 2181 return (que->cq_prod_idx != prod_idx); 2182 } 2183 2184 /* 2185 * Interrupt handler code. 2186 */ 2187 2188 /* Process completion queue and copy CQE contents for deferred processesing 2189 * 2190 * Return true if we should wake the I/O thread, false if not. 2191 */ 2192 static bool qedf_process_completions(struct qedf_fastpath *fp) 2193 { 2194 struct qedf_ctx *qedf = fp->qedf; 2195 struct qed_sb_info *sb_info = fp->sb_info; 2196 struct status_block_e4 *sb = sb_info->sb_virt; 2197 struct global_queue *que; 2198 u16 prod_idx; 2199 struct fcoe_cqe *cqe; 2200 struct qedf_io_work *io_work; 2201 int num_handled = 0; 2202 unsigned int cpu; 2203 struct qedf_ioreq *io_req = NULL; 2204 u16 xid; 2205 u16 new_cqes; 2206 u32 comp_type; 2207 2208 /* Get the current firmware producer index */ 2209 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2210 2211 /* Get the pointer to the global CQ this completion is on */ 2212 que = qedf->global_queues[fp->sb_id]; 2213 2214 /* Calculate the amount of new elements since last processing */ 2215 new_cqes = (prod_idx >= que->cq_prod_idx) ? 2216 (prod_idx - que->cq_prod_idx) : 2217 0x10000 - que->cq_prod_idx + prod_idx; 2218 2219 /* Save producer index */ 2220 que->cq_prod_idx = prod_idx; 2221 2222 while (new_cqes) { 2223 fp->completions++; 2224 num_handled++; 2225 cqe = &que->cq[que->cq_cons_idx]; 2226 2227 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2228 FCOE_CQE_CQE_TYPE_MASK; 2229 2230 /* 2231 * Process unsolicited CQEs directly in the interrupt handler 2232 * sine we need the fastpath ID 2233 */ 2234 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) { 2235 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL, 2236 "Unsolicated CQE.\n"); 2237 qedf_process_unsol_compl(qedf, fp->sb_id, cqe); 2238 /* 2239 * Don't add a work list item. Increment consumer 2240 * consumer index and move on. 2241 */ 2242 goto inc_idx; 2243 } 2244 2245 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2246 io_req = &qedf->cmd_mgr->cmds[xid]; 2247 2248 /* 2249 * Figure out which percpu thread we should queue this I/O 2250 * on. 2251 */ 2252 if (!io_req) 2253 /* If there is not io_req assocated with this CQE 2254 * just queue it on CPU 0 2255 */ 2256 cpu = 0; 2257 else { 2258 cpu = io_req->cpu; 2259 io_req->int_cpu = smp_processor_id(); 2260 } 2261 2262 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC); 2263 if (!io_work) { 2264 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate " 2265 "work for I/O completion.\n"); 2266 continue; 2267 } 2268 memset(io_work, 0, sizeof(struct qedf_io_work)); 2269 2270 INIT_WORK(&io_work->work, qedf_fp_io_handler); 2271 2272 /* Copy contents of CQE for deferred processing */ 2273 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe)); 2274 2275 io_work->qedf = fp->qedf; 2276 io_work->fp = NULL; /* Only used for unsolicited frames */ 2277 2278 queue_work_on(cpu, qedf_io_wq, &io_work->work); 2279 2280 inc_idx: 2281 que->cq_cons_idx++; 2282 if (que->cq_cons_idx == fp->cq_num_entries) 2283 que->cq_cons_idx = 0; 2284 new_cqes--; 2285 } 2286 2287 return true; 2288 } 2289 2290 2291 /* MSI-X fastpath handler code */ 2292 static irqreturn_t qedf_msix_handler(int irq, void *dev_id) 2293 { 2294 struct qedf_fastpath *fp = dev_id; 2295 2296 if (!fp) { 2297 QEDF_ERR(NULL, "fp is null.\n"); 2298 return IRQ_HANDLED; 2299 } 2300 if (!fp->sb_info) { 2301 QEDF_ERR(NULL, "fp->sb_info in null."); 2302 return IRQ_HANDLED; 2303 } 2304 2305 /* 2306 * Disable interrupts for this status block while we process new 2307 * completions 2308 */ 2309 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/); 2310 2311 while (1) { 2312 qedf_process_completions(fp); 2313 2314 if (qedf_fp_has_work(fp) == 0) { 2315 /* Update the sb information */ 2316 qed_sb_update_sb_idx(fp->sb_info); 2317 2318 /* Check for more work */ 2319 rmb(); 2320 2321 if (qedf_fp_has_work(fp) == 0) { 2322 /* Re-enable interrupts */ 2323 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 2324 return IRQ_HANDLED; 2325 } 2326 } 2327 } 2328 2329 /* Do we ever want to break out of above loop? */ 2330 return IRQ_HANDLED; 2331 } 2332 2333 /* simd handler for MSI/INTa */ 2334 static void qedf_simd_int_handler(void *cookie) 2335 { 2336 /* Cookie is qedf_ctx struct */ 2337 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2338 2339 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf); 2340 } 2341 2342 #define QEDF_SIMD_HANDLER_NUM 0 2343 static void qedf_sync_free_irqs(struct qedf_ctx *qedf) 2344 { 2345 int i; 2346 u16 vector_idx = 0; 2347 u32 vector; 2348 2349 if (qedf->int_info.msix_cnt) { 2350 for (i = 0; i < qedf->int_info.used_cnt; i++) { 2351 vector_idx = i * qedf->dev_info.common.num_hwfns + 2352 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2353 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2354 "Freeing IRQ #%d vector_idx=%d.\n", 2355 i, vector_idx); 2356 vector = qedf->int_info.msix[vector_idx].vector; 2357 synchronize_irq(vector); 2358 irq_set_affinity_hint(vector, NULL); 2359 irq_set_affinity_notifier(vector, NULL); 2360 free_irq(vector, &qedf->fp_array[i]); 2361 } 2362 } else 2363 qed_ops->common->simd_handler_clean(qedf->cdev, 2364 QEDF_SIMD_HANDLER_NUM); 2365 2366 qedf->int_info.used_cnt = 0; 2367 qed_ops->common->set_fp_int(qedf->cdev, 0); 2368 } 2369 2370 static int qedf_request_msix_irq(struct qedf_ctx *qedf) 2371 { 2372 int i, rc, cpu; 2373 u16 vector_idx = 0; 2374 u32 vector; 2375 2376 cpu = cpumask_first(cpu_online_mask); 2377 for (i = 0; i < qedf->num_queues; i++) { 2378 vector_idx = i * qedf->dev_info.common.num_hwfns + 2379 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2380 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2381 "Requesting IRQ #%d vector_idx=%d.\n", 2382 i, vector_idx); 2383 vector = qedf->int_info.msix[vector_idx].vector; 2384 rc = request_irq(vector, qedf_msix_handler, 0, "qedf", 2385 &qedf->fp_array[i]); 2386 2387 if (rc) { 2388 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n"); 2389 qedf_sync_free_irqs(qedf); 2390 return rc; 2391 } 2392 2393 qedf->int_info.used_cnt++; 2394 rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu)); 2395 cpu = cpumask_next(cpu, cpu_online_mask); 2396 } 2397 2398 return 0; 2399 } 2400 2401 static int qedf_setup_int(struct qedf_ctx *qedf) 2402 { 2403 int rc = 0; 2404 2405 /* 2406 * Learn interrupt configuration 2407 */ 2408 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus()); 2409 if (rc <= 0) 2410 return 0; 2411 2412 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info); 2413 if (rc) 2414 return 0; 2415 2416 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = " 2417 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt, 2418 num_online_cpus()); 2419 2420 if (qedf->int_info.msix_cnt) 2421 return qedf_request_msix_irq(qedf); 2422 2423 qed_ops->common->simd_handler_config(qedf->cdev, &qedf, 2424 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler); 2425 qedf->int_info.used_cnt = 1; 2426 2427 QEDF_ERR(&qedf->dbg_ctx, 2428 "Cannot load driver due to a lack of MSI-X vectors.\n"); 2429 return -EINVAL; 2430 } 2431 2432 /* Main function for libfc frame reception */ 2433 static void qedf_recv_frame(struct qedf_ctx *qedf, 2434 struct sk_buff *skb) 2435 { 2436 u32 fr_len; 2437 struct fc_lport *lport; 2438 struct fc_frame_header *fh; 2439 struct fcoe_crc_eof crc_eof; 2440 struct fc_frame *fp; 2441 u8 *mac = NULL; 2442 u8 *dest_mac = NULL; 2443 struct fcoe_hdr *hp; 2444 struct qedf_rport *fcport; 2445 struct fc_lport *vn_port; 2446 u32 f_ctl; 2447 2448 lport = qedf->lport; 2449 if (lport == NULL || lport->state == LPORT_ST_DISABLED) { 2450 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n"); 2451 kfree_skb(skb); 2452 return; 2453 } 2454 2455 if (skb_is_nonlinear(skb)) 2456 skb_linearize(skb); 2457 mac = eth_hdr(skb)->h_source; 2458 dest_mac = eth_hdr(skb)->h_dest; 2459 2460 /* Pull the header */ 2461 hp = (struct fcoe_hdr *)skb->data; 2462 fh = (struct fc_frame_header *) skb_transport_header(skb); 2463 skb_pull(skb, sizeof(struct fcoe_hdr)); 2464 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 2465 2466 fp = (struct fc_frame *)skb; 2467 fc_frame_init(fp); 2468 fr_dev(fp) = lport; 2469 fr_sof(fp) = hp->fcoe_sof; 2470 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 2471 QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n"); 2472 kfree_skb(skb); 2473 return; 2474 } 2475 fr_eof(fp) = crc_eof.fcoe_eof; 2476 fr_crc(fp) = crc_eof.fcoe_crc32; 2477 if (pskb_trim(skb, fr_len)) { 2478 QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n"); 2479 kfree_skb(skb); 2480 return; 2481 } 2482 2483 fh = fc_frame_header_get(fp); 2484 2485 /* 2486 * Invalid frame filters. 2487 */ 2488 2489 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 2490 fh->fh_type == FC_TYPE_FCP) { 2491 /* Drop FCP data. We dont this in L2 path */ 2492 kfree_skb(skb); 2493 return; 2494 } 2495 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 2496 fh->fh_type == FC_TYPE_ELS) { 2497 switch (fc_frame_payload_op(fp)) { 2498 case ELS_LOGO: 2499 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 2500 /* drop non-FIP LOGO */ 2501 kfree_skb(skb); 2502 return; 2503 } 2504 break; 2505 } 2506 } 2507 2508 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 2509 /* Drop incoming ABTS */ 2510 kfree_skb(skb); 2511 return; 2512 } 2513 2514 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { 2515 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2516 "FC frame d_id mismatch with MAC %pM.\n", dest_mac); 2517 kfree_skb(skb); 2518 return; 2519 } 2520 2521 if (qedf->ctlr.state) { 2522 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) { 2523 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2524 "Wrong source address: mac:%pM dest_addr:%pM.\n", 2525 mac, qedf->ctlr.dest_addr); 2526 kfree_skb(skb); 2527 return; 2528 } 2529 } 2530 2531 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 2532 2533 /* 2534 * If the destination ID from the frame header does not match what we 2535 * have on record for lport and the search for a NPIV port came up 2536 * empty then this is not addressed to our port so simply drop it. 2537 */ 2538 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { 2539 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2540 "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n", 2541 lport->port_id, ntoh24(fh->fh_d_id)); 2542 kfree_skb(skb); 2543 return; 2544 } 2545 2546 f_ctl = ntoh24(fh->fh_f_ctl); 2547 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) && 2548 (f_ctl & FC_FC_EX_CTX)) { 2549 /* Drop incoming ABTS response that has both SEQ/EX CTX set */ 2550 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2551 "Dropping ABTS response as both SEQ/EX CTX set.\n"); 2552 kfree_skb(skb); 2553 return; 2554 } 2555 2556 /* 2557 * If a connection is uploading, drop incoming FCoE frames as there 2558 * is a small window where we could try to return a frame while libfc 2559 * is trying to clean things up. 2560 */ 2561 2562 /* Get fcport associated with d_id if it exists */ 2563 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 2564 2565 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 2566 &fcport->flags)) { 2567 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2568 "Connection uploading, dropping fp=%p.\n", fp); 2569 kfree_skb(skb); 2570 return; 2571 } 2572 2573 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: " 2574 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp, 2575 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, 2576 fh->fh_type); 2577 if (qedf_dump_frames) 2578 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 2579 1, skb->data, skb->len, false); 2580 fc_exch_recv(lport, fp); 2581 } 2582 2583 static void qedf_ll2_process_skb(struct work_struct *work) 2584 { 2585 struct qedf_skb_work *skb_work = 2586 container_of(work, struct qedf_skb_work, work); 2587 struct qedf_ctx *qedf = skb_work->qedf; 2588 struct sk_buff *skb = skb_work->skb; 2589 struct ethhdr *eh; 2590 2591 if (!qedf) { 2592 QEDF_ERR(NULL, "qedf is NULL\n"); 2593 goto err_out; 2594 } 2595 2596 eh = (struct ethhdr *)skb->data; 2597 2598 /* Undo VLAN encapsulation */ 2599 if (eh->h_proto == htons(ETH_P_8021Q)) { 2600 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); 2601 eh = skb_pull(skb, VLAN_HLEN); 2602 skb_reset_mac_header(skb); 2603 } 2604 2605 /* 2606 * Process either a FIP frame or FCoE frame based on the 2607 * protocol value. If it's not either just drop the 2608 * frame. 2609 */ 2610 if (eh->h_proto == htons(ETH_P_FIP)) { 2611 qedf_fip_recv(qedf, skb); 2612 goto out; 2613 } else if (eh->h_proto == htons(ETH_P_FCOE)) { 2614 __skb_pull(skb, ETH_HLEN); 2615 qedf_recv_frame(qedf, skb); 2616 goto out; 2617 } else 2618 goto err_out; 2619 2620 err_out: 2621 kfree_skb(skb); 2622 out: 2623 kfree(skb_work); 2624 return; 2625 } 2626 2627 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb, 2628 u32 arg1, u32 arg2) 2629 { 2630 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2631 struct qedf_skb_work *skb_work; 2632 2633 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 2634 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2635 "Dropping frame as link state is down.\n"); 2636 kfree_skb(skb); 2637 return 0; 2638 } 2639 2640 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC); 2641 if (!skb_work) { 2642 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so " 2643 "dropping frame.\n"); 2644 kfree_skb(skb); 2645 return 0; 2646 } 2647 2648 INIT_WORK(&skb_work->work, qedf_ll2_process_skb); 2649 skb_work->skb = skb; 2650 skb_work->qedf = qedf; 2651 queue_work(qedf->ll2_recv_wq, &skb_work->work); 2652 2653 return 0; 2654 } 2655 2656 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = { 2657 .rx_cb = qedf_ll2_rx, 2658 .tx_cb = NULL, 2659 }; 2660 2661 /* Main thread to process I/O completions */ 2662 void qedf_fp_io_handler(struct work_struct *work) 2663 { 2664 struct qedf_io_work *io_work = 2665 container_of(work, struct qedf_io_work, work); 2666 u32 comp_type; 2667 2668 /* 2669 * Deferred part of unsolicited CQE sends 2670 * frame to libfc. 2671 */ 2672 comp_type = (io_work->cqe.cqe_data >> 2673 FCOE_CQE_CQE_TYPE_SHIFT) & 2674 FCOE_CQE_CQE_TYPE_MASK; 2675 if (comp_type == FCOE_UNSOLIC_CQE_TYPE && 2676 io_work->fp) 2677 fc_exch_recv(io_work->qedf->lport, io_work->fp); 2678 else 2679 qedf_process_cqe(io_work->qedf, &io_work->cqe); 2680 2681 kfree(io_work); 2682 } 2683 2684 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf, 2685 struct qed_sb_info *sb_info, u16 sb_id) 2686 { 2687 struct status_block_e4 *sb_virt; 2688 dma_addr_t sb_phys; 2689 int ret; 2690 2691 sb_virt = dma_alloc_coherent(&qedf->pdev->dev, 2692 sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL); 2693 2694 if (!sb_virt) { 2695 QEDF_ERR(&qedf->dbg_ctx, 2696 "Status block allocation failed for id = %d.\n", 2697 sb_id); 2698 return -ENOMEM; 2699 } 2700 2701 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys, 2702 sb_id, QED_SB_TYPE_STORAGE); 2703 2704 if (ret) { 2705 QEDF_ERR(&qedf->dbg_ctx, 2706 "Status block initialization failed (0x%x) for id = %d.\n", 2707 ret, sb_id); 2708 return ret; 2709 } 2710 2711 return 0; 2712 } 2713 2714 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info) 2715 { 2716 if (sb_info->sb_virt) 2717 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt), 2718 (void *)sb_info->sb_virt, sb_info->sb_phys); 2719 } 2720 2721 static void qedf_destroy_sb(struct qedf_ctx *qedf) 2722 { 2723 int id; 2724 struct qedf_fastpath *fp = NULL; 2725 2726 for (id = 0; id < qedf->num_queues; id++) { 2727 fp = &(qedf->fp_array[id]); 2728 if (fp->sb_id == QEDF_SB_ID_NULL) 2729 break; 2730 qedf_free_sb(qedf, fp->sb_info); 2731 kfree(fp->sb_info); 2732 } 2733 kfree(qedf->fp_array); 2734 } 2735 2736 static int qedf_prepare_sb(struct qedf_ctx *qedf) 2737 { 2738 int id; 2739 struct qedf_fastpath *fp; 2740 int ret; 2741 2742 qedf->fp_array = 2743 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath), 2744 GFP_KERNEL); 2745 2746 if (!qedf->fp_array) { 2747 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation " 2748 "failed.\n"); 2749 return -ENOMEM; 2750 } 2751 2752 for (id = 0; id < qedf->num_queues; id++) { 2753 fp = &(qedf->fp_array[id]); 2754 fp->sb_id = QEDF_SB_ID_NULL; 2755 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL); 2756 if (!fp->sb_info) { 2757 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct " 2758 "allocation failed.\n"); 2759 goto err; 2760 } 2761 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id); 2762 if (ret) { 2763 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and " 2764 "initialization failed.\n"); 2765 goto err; 2766 } 2767 fp->sb_id = id; 2768 fp->qedf = qedf; 2769 fp->cq_num_entries = 2770 qedf->global_queues[id]->cq_mem_size / 2771 sizeof(struct fcoe_cqe); 2772 } 2773 err: 2774 return 0; 2775 } 2776 2777 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe) 2778 { 2779 u16 xid; 2780 struct qedf_ioreq *io_req; 2781 struct qedf_rport *fcport; 2782 u32 comp_type; 2783 2784 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2785 FCOE_CQE_CQE_TYPE_MASK; 2786 2787 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2788 io_req = &qedf->cmd_mgr->cmds[xid]; 2789 2790 /* Completion not for a valid I/O anymore so just return */ 2791 if (!io_req) { 2792 QEDF_ERR(&qedf->dbg_ctx, 2793 "io_req is NULL for xid=0x%x.\n", xid); 2794 return; 2795 } 2796 2797 fcport = io_req->fcport; 2798 2799 if (fcport == NULL) { 2800 QEDF_ERR(&qedf->dbg_ctx, 2801 "fcport is NULL for xid=0x%x io_req=%p.\n", 2802 xid, io_req); 2803 return; 2804 } 2805 2806 /* 2807 * Check that fcport is offloaded. If it isn't then the spinlock 2808 * isn't valid and shouldn't be taken. We should just return. 2809 */ 2810 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 2811 QEDF_ERR(&qedf->dbg_ctx, 2812 "Session not offloaded yet, fcport = %p.\n", fcport); 2813 return; 2814 } 2815 2816 2817 switch (comp_type) { 2818 case FCOE_GOOD_COMPLETION_CQE_TYPE: 2819 atomic_inc(&fcport->free_sqes); 2820 switch (io_req->cmd_type) { 2821 case QEDF_SCSI_CMD: 2822 qedf_scsi_completion(qedf, cqe, io_req); 2823 break; 2824 case QEDF_ELS: 2825 qedf_process_els_compl(qedf, cqe, io_req); 2826 break; 2827 case QEDF_TASK_MGMT_CMD: 2828 qedf_process_tmf_compl(qedf, cqe, io_req); 2829 break; 2830 case QEDF_SEQ_CLEANUP: 2831 qedf_process_seq_cleanup_compl(qedf, cqe, io_req); 2832 break; 2833 } 2834 break; 2835 case FCOE_ERROR_DETECTION_CQE_TYPE: 2836 atomic_inc(&fcport->free_sqes); 2837 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2838 "Error detect CQE.\n"); 2839 qedf_process_error_detect(qedf, cqe, io_req); 2840 break; 2841 case FCOE_EXCH_CLEANUP_CQE_TYPE: 2842 atomic_inc(&fcport->free_sqes); 2843 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2844 "Cleanup CQE.\n"); 2845 qedf_process_cleanup_compl(qedf, cqe, io_req); 2846 break; 2847 case FCOE_ABTS_CQE_TYPE: 2848 atomic_inc(&fcport->free_sqes); 2849 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2850 "Abort CQE.\n"); 2851 qedf_process_abts_compl(qedf, cqe, io_req); 2852 break; 2853 case FCOE_DUMMY_CQE_TYPE: 2854 atomic_inc(&fcport->free_sqes); 2855 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2856 "Dummy CQE.\n"); 2857 break; 2858 case FCOE_LOCAL_COMP_CQE_TYPE: 2859 atomic_inc(&fcport->free_sqes); 2860 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2861 "Local completion CQE.\n"); 2862 break; 2863 case FCOE_WARNING_CQE_TYPE: 2864 atomic_inc(&fcport->free_sqes); 2865 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2866 "Warning CQE.\n"); 2867 qedf_process_warning_compl(qedf, cqe, io_req); 2868 break; 2869 case MAX_FCOE_CQE_TYPE: 2870 atomic_inc(&fcport->free_sqes); 2871 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2872 "Max FCoE CQE.\n"); 2873 break; 2874 default: 2875 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2876 "Default CQE.\n"); 2877 break; 2878 } 2879 } 2880 2881 static void qedf_free_bdq(struct qedf_ctx *qedf) 2882 { 2883 int i; 2884 2885 if (qedf->bdq_pbl_list) 2886 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE, 2887 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma); 2888 2889 if (qedf->bdq_pbl) 2890 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size, 2891 qedf->bdq_pbl, qedf->bdq_pbl_dma); 2892 2893 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2894 if (qedf->bdq[i].buf_addr) { 2895 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE, 2896 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma); 2897 } 2898 } 2899 } 2900 2901 static void qedf_free_global_queues(struct qedf_ctx *qedf) 2902 { 2903 int i; 2904 struct global_queue **gl = qedf->global_queues; 2905 2906 for (i = 0; i < qedf->num_queues; i++) { 2907 if (!gl[i]) 2908 continue; 2909 2910 if (gl[i]->cq) 2911 dma_free_coherent(&qedf->pdev->dev, 2912 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma); 2913 if (gl[i]->cq_pbl) 2914 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size, 2915 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 2916 2917 kfree(gl[i]); 2918 } 2919 2920 qedf_free_bdq(qedf); 2921 } 2922 2923 static int qedf_alloc_bdq(struct qedf_ctx *qedf) 2924 { 2925 int i; 2926 struct scsi_bd *pbl; 2927 u64 *list; 2928 dma_addr_t page; 2929 2930 /* Alloc dma memory for BDQ buffers */ 2931 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2932 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev, 2933 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL); 2934 if (!qedf->bdq[i].buf_addr) { 2935 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ " 2936 "buffer %d.\n", i); 2937 return -ENOMEM; 2938 } 2939 } 2940 2941 /* Alloc dma memory for BDQ page buffer list */ 2942 qedf->bdq_pbl_mem_size = 2943 QEDF_BDQ_SIZE * sizeof(struct scsi_bd); 2944 qedf->bdq_pbl_mem_size = 2945 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE); 2946 2947 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 2948 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL); 2949 if (!qedf->bdq_pbl) { 2950 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n"); 2951 return -ENOMEM; 2952 } 2953 2954 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2955 "BDQ PBL addr=0x%p dma=%pad\n", 2956 qedf->bdq_pbl, &qedf->bdq_pbl_dma); 2957 2958 /* 2959 * Populate BDQ PBL with physical and virtual address of individual 2960 * BDQ buffers 2961 */ 2962 pbl = (struct scsi_bd *)qedf->bdq_pbl; 2963 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2964 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma)); 2965 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma)); 2966 pbl->opaque.fcoe_opaque.hi = 0; 2967 /* Opaque lo data is an index into the BDQ array */ 2968 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i); 2969 pbl++; 2970 } 2971 2972 /* Allocate list of PBL pages */ 2973 qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev, 2974 QEDF_PAGE_SIZE, 2975 &qedf->bdq_pbl_list_dma, 2976 GFP_KERNEL); 2977 if (!qedf->bdq_pbl_list) { 2978 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n"); 2979 return -ENOMEM; 2980 } 2981 2982 /* 2983 * Now populate PBL list with pages that contain pointers to the 2984 * individual buffers. 2985 */ 2986 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size / 2987 QEDF_PAGE_SIZE; 2988 list = (u64 *)qedf->bdq_pbl_list; 2989 page = qedf->bdq_pbl_list_dma; 2990 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) { 2991 *list = qedf->bdq_pbl_dma; 2992 list++; 2993 page += QEDF_PAGE_SIZE; 2994 } 2995 2996 return 0; 2997 } 2998 2999 static int qedf_alloc_global_queues(struct qedf_ctx *qedf) 3000 { 3001 u32 *list; 3002 int i; 3003 int status = 0, rc; 3004 u32 *pbl; 3005 dma_addr_t page; 3006 int num_pages; 3007 3008 /* Allocate and map CQs, RQs */ 3009 /* 3010 * Number of global queues (CQ / RQ). This should 3011 * be <= number of available MSIX vectors for the PF 3012 */ 3013 if (!qedf->num_queues) { 3014 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n"); 3015 return 1; 3016 } 3017 3018 /* 3019 * Make sure we allocated the PBL that will contain the physical 3020 * addresses of our queues 3021 */ 3022 if (!qedf->p_cpuq) { 3023 status = 1; 3024 QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n"); 3025 goto mem_alloc_failure; 3026 } 3027 3028 qedf->global_queues = kzalloc((sizeof(struct global_queue *) 3029 * qedf->num_queues), GFP_KERNEL); 3030 if (!qedf->global_queues) { 3031 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global " 3032 "queues array ptr memory\n"); 3033 return -ENOMEM; 3034 } 3035 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3036 "qedf->global_queues=%p.\n", qedf->global_queues); 3037 3038 /* Allocate DMA coherent buffers for BDQ */ 3039 rc = qedf_alloc_bdq(qedf); 3040 if (rc) { 3041 QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n"); 3042 goto mem_alloc_failure; 3043 } 3044 3045 /* Allocate a CQ and an associated PBL for each MSI-X vector */ 3046 for (i = 0; i < qedf->num_queues; i++) { 3047 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue), 3048 GFP_KERNEL); 3049 if (!qedf->global_queues[i]) { 3050 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate " 3051 "global queue %d.\n", i); 3052 status = -ENOMEM; 3053 goto mem_alloc_failure; 3054 } 3055 3056 qedf->global_queues[i]->cq_mem_size = 3057 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3058 qedf->global_queues[i]->cq_mem_size = 3059 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE); 3060 3061 qedf->global_queues[i]->cq_pbl_size = 3062 (qedf->global_queues[i]->cq_mem_size / 3063 PAGE_SIZE) * sizeof(void *); 3064 qedf->global_queues[i]->cq_pbl_size = 3065 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE); 3066 3067 qedf->global_queues[i]->cq = 3068 dma_alloc_coherent(&qedf->pdev->dev, 3069 qedf->global_queues[i]->cq_mem_size, 3070 &qedf->global_queues[i]->cq_dma, 3071 GFP_KERNEL); 3072 3073 if (!qedf->global_queues[i]->cq) { 3074 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n"); 3075 status = -ENOMEM; 3076 goto mem_alloc_failure; 3077 } 3078 3079 qedf->global_queues[i]->cq_pbl = 3080 dma_alloc_coherent(&qedf->pdev->dev, 3081 qedf->global_queues[i]->cq_pbl_size, 3082 &qedf->global_queues[i]->cq_pbl_dma, 3083 GFP_KERNEL); 3084 3085 if (!qedf->global_queues[i]->cq_pbl) { 3086 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n"); 3087 status = -ENOMEM; 3088 goto mem_alloc_failure; 3089 } 3090 3091 /* Create PBL */ 3092 num_pages = qedf->global_queues[i]->cq_mem_size / 3093 QEDF_PAGE_SIZE; 3094 page = qedf->global_queues[i]->cq_dma; 3095 pbl = (u32 *)qedf->global_queues[i]->cq_pbl; 3096 3097 while (num_pages--) { 3098 *pbl = U64_LO(page); 3099 pbl++; 3100 *pbl = U64_HI(page); 3101 pbl++; 3102 page += QEDF_PAGE_SIZE; 3103 } 3104 /* Set the initial consumer index for cq */ 3105 qedf->global_queues[i]->cq_cons_idx = 0; 3106 } 3107 3108 list = (u32 *)qedf->p_cpuq; 3109 3110 /* 3111 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 3112 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 3113 * to the physical address which contains an array of pointers to 3114 * the physical addresses of the specific queue pages. 3115 */ 3116 for (i = 0; i < qedf->num_queues; i++) { 3117 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma); 3118 list++; 3119 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma); 3120 list++; 3121 *list = U64_LO(0); 3122 list++; 3123 *list = U64_HI(0); 3124 list++; 3125 } 3126 3127 return 0; 3128 3129 mem_alloc_failure: 3130 qedf_free_global_queues(qedf); 3131 return status; 3132 } 3133 3134 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf) 3135 { 3136 u8 sq_num_pbl_pages; 3137 u32 sq_mem_size; 3138 u32 cq_mem_size; 3139 u32 cq_num_entries; 3140 int rval; 3141 3142 /* 3143 * The number of completion queues/fastpath interrupts/status blocks 3144 * we allocation is the minimum off: 3145 * 3146 * Number of CPUs 3147 * Number allocated by qed for our PCI function 3148 */ 3149 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf); 3150 3151 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n", 3152 qedf->num_queues); 3153 3154 qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev, 3155 qedf->num_queues * sizeof(struct qedf_glbl_q_params), 3156 &qedf->hw_p_cpuq, GFP_KERNEL); 3157 3158 if (!qedf->p_cpuq) { 3159 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n"); 3160 return 1; 3161 } 3162 3163 rval = qedf_alloc_global_queues(qedf); 3164 if (rval) { 3165 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation " 3166 "failed.\n"); 3167 return 1; 3168 } 3169 3170 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */ 3171 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 3172 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE); 3173 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE); 3174 3175 /* Calculate CQ num entries */ 3176 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3177 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE); 3178 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe); 3179 3180 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params)); 3181 3182 /* Setup the value for fcoe PF */ 3183 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS; 3184 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS; 3185 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr = 3186 (u64)qedf->hw_p_cpuq; 3187 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages; 3188 3189 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0; 3190 3191 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries; 3192 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues; 3193 3194 /* log_page_size: 12 for 4KB pages */ 3195 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE); 3196 3197 qedf->pf_params.fcoe_pf_params.mtu = 9000; 3198 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI; 3199 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI; 3200 3201 /* BDQ address and size */ 3202 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] = 3203 qedf->bdq_pbl_list_dma; 3204 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] = 3205 qedf->bdq_pbl_list_num_entries; 3206 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE; 3207 3208 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3209 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n", 3210 qedf->bdq_pbl_list, 3211 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0], 3212 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]); 3213 3214 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3215 "cq_num_entries=%d.\n", 3216 qedf->pf_params.fcoe_pf_params.cq_num_entries); 3217 3218 return 0; 3219 } 3220 3221 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 3222 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf) 3223 { 3224 size_t size = 0; 3225 3226 if (qedf->p_cpuq) { 3227 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params); 3228 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq, 3229 qedf->hw_p_cpuq); 3230 } 3231 3232 qedf_free_global_queues(qedf); 3233 3234 kfree(qedf->global_queues); 3235 } 3236 3237 /* 3238 * PCI driver functions 3239 */ 3240 3241 static const struct pci_device_id qedf_pci_tbl[] = { 3242 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) }, 3243 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) }, 3244 {0} 3245 }; 3246 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl); 3247 3248 static struct pci_driver qedf_pci_driver = { 3249 .name = QEDF_MODULE_NAME, 3250 .id_table = qedf_pci_tbl, 3251 .probe = qedf_probe, 3252 .remove = qedf_remove, 3253 .shutdown = qedf_shutdown, 3254 }; 3255 3256 static int __qedf_probe(struct pci_dev *pdev, int mode) 3257 { 3258 int rc = -EINVAL; 3259 struct fc_lport *lport; 3260 struct qedf_ctx *qedf = NULL; 3261 struct Scsi_Host *host; 3262 bool is_vf = false; 3263 struct qed_ll2_params params; 3264 char host_buf[20]; 3265 struct qed_link_params link_params; 3266 int status; 3267 void *task_start, *task_end; 3268 struct qed_slowpath_params slowpath_params; 3269 struct qed_probe_params qed_params; 3270 u16 retry_cnt = 10; 3271 3272 /* 3273 * When doing error recovery we didn't reap the lport so don't try 3274 * to reallocate it. 3275 */ 3276 retry_probe: 3277 if (mode == QEDF_MODE_RECOVERY) 3278 msleep(2000); 3279 3280 if (mode != QEDF_MODE_RECOVERY) { 3281 lport = libfc_host_alloc(&qedf_host_template, 3282 sizeof(struct qedf_ctx)); 3283 3284 if (!lport) { 3285 QEDF_ERR(NULL, "Could not allocate lport.\n"); 3286 rc = -ENOMEM; 3287 goto err0; 3288 } 3289 3290 fc_disc_init(lport); 3291 3292 /* Initialize qedf_ctx */ 3293 qedf = lport_priv(lport); 3294 set_bit(QEDF_PROBING, &qedf->flags); 3295 qedf->lport = lport; 3296 qedf->ctlr.lp = lport; 3297 qedf->pdev = pdev; 3298 qedf->dbg_ctx.pdev = pdev; 3299 qedf->dbg_ctx.host_no = lport->host->host_no; 3300 spin_lock_init(&qedf->hba_lock); 3301 INIT_LIST_HEAD(&qedf->fcports); 3302 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1; 3303 atomic_set(&qedf->num_offloads, 0); 3304 qedf->stop_io_on_error = false; 3305 pci_set_drvdata(pdev, qedf); 3306 init_completion(&qedf->fipvlan_compl); 3307 mutex_init(&qedf->stats_mutex); 3308 mutex_init(&qedf->flush_mutex); 3309 qedf->flogi_pending = 0; 3310 3311 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, 3312 "QLogic FastLinQ FCoE Module qedf %s, " 3313 "FW %d.%d.%d.%d\n", QEDF_VERSION, 3314 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 3315 FW_ENGINEERING_VERSION); 3316 } else { 3317 /* Init pointers during recovery */ 3318 qedf = pci_get_drvdata(pdev); 3319 set_bit(QEDF_PROBING, &qedf->flags); 3320 lport = qedf->lport; 3321 } 3322 3323 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n"); 3324 3325 host = lport->host; 3326 3327 /* Allocate mempool for qedf_io_work structs */ 3328 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN, 3329 qedf_io_work_cache); 3330 if (qedf->io_mempool == NULL) { 3331 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n"); 3332 goto err1; 3333 } 3334 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n", 3335 qedf->io_mempool); 3336 3337 sprintf(host_buf, "qedf_%u_link", 3338 qedf->lport->host->host_no); 3339 qedf->link_update_wq = create_workqueue(host_buf); 3340 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update); 3341 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery); 3342 INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump); 3343 INIT_DELAYED_WORK(&qedf->stag_work, qedf_stag_change_work); 3344 qedf->fipvlan_retries = qedf_fipvlan_retries; 3345 /* Set a default prio in case DCBX doesn't converge */ 3346 if (qedf_default_prio > -1) { 3347 /* 3348 * This is the case where we pass a modparam in so we want to 3349 * honor it even if dcbx doesn't converge. 3350 */ 3351 qedf->prio = qedf_default_prio; 3352 } else 3353 qedf->prio = QEDF_DEFAULT_PRIO; 3354 3355 /* 3356 * Common probe. Takes care of basic hardware init and pci_* 3357 * functions. 3358 */ 3359 memset(&qed_params, 0, sizeof(qed_params)); 3360 qed_params.protocol = QED_PROTOCOL_FCOE; 3361 qed_params.dp_module = qedf_dp_module; 3362 qed_params.dp_level = qedf_dp_level; 3363 qed_params.is_vf = is_vf; 3364 qedf->cdev = qed_ops->common->probe(pdev, &qed_params); 3365 if (!qedf->cdev) { 3366 if ((mode == QEDF_MODE_RECOVERY) && retry_cnt) { 3367 QEDF_ERR(&qedf->dbg_ctx, 3368 "Retry %d initialize hardware\n", retry_cnt); 3369 retry_cnt--; 3370 goto retry_probe; 3371 } 3372 QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n"); 3373 rc = -ENODEV; 3374 goto err1; 3375 } 3376 3377 /* Learn information crucial for qedf to progress */ 3378 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3379 if (rc) { 3380 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n"); 3381 goto err1; 3382 } 3383 3384 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 3385 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n", 3386 qedf->dev_info.common.num_hwfns, 3387 qed_ops->common->get_affin_hwfn_idx(qedf->cdev)); 3388 3389 /* queue allocation code should come here 3390 * order should be 3391 * slowpath_start 3392 * status block allocation 3393 * interrupt registration (to get min number of queues) 3394 * set_fcoe_pf_param 3395 * qed_sp_fcoe_func_start 3396 */ 3397 rc = qedf_set_fcoe_pf_param(qedf); 3398 if (rc) { 3399 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n"); 3400 goto err2; 3401 } 3402 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3403 3404 /* Learn information crucial for qedf to progress */ 3405 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3406 if (rc) { 3407 QEDF_ERR(&qedf->dbg_ctx, "Failed to fill dev info.\n"); 3408 goto err2; 3409 } 3410 3411 /* Record BDQ producer doorbell addresses */ 3412 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr; 3413 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr; 3414 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3415 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod, 3416 qedf->bdq_secondary_prod); 3417 3418 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf); 3419 3420 rc = qedf_prepare_sb(qedf); 3421 if (rc) { 3422 3423 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3424 goto err2; 3425 } 3426 3427 /* Start the Slowpath-process */ 3428 slowpath_params.int_mode = QED_INT_MODE_MSIX; 3429 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER; 3430 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER; 3431 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER; 3432 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER; 3433 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE); 3434 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params); 3435 if (rc) { 3436 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3437 goto err2; 3438 } 3439 3440 /* 3441 * update_pf_params needs to be called before and after slowpath 3442 * start 3443 */ 3444 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3445 3446 /* Setup interrupts */ 3447 rc = qedf_setup_int(qedf); 3448 if (rc) { 3449 QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n"); 3450 goto err3; 3451 } 3452 3453 rc = qed_ops->start(qedf->cdev, &qedf->tasks); 3454 if (rc) { 3455 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n"); 3456 goto err4; 3457 } 3458 task_start = qedf_get_task_mem(&qedf->tasks, 0); 3459 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1); 3460 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, " 3461 "end=%p block_size=%u.\n", task_start, task_end, 3462 qedf->tasks.size); 3463 3464 /* 3465 * We need to write the number of BDs in the BDQ we've preallocated so 3466 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 3467 * packet arrives. 3468 */ 3469 qedf->bdq_prod_idx = QEDF_BDQ_SIZE; 3470 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3471 "Writing %d to primary and secondary BDQ doorbell registers.\n", 3472 qedf->bdq_prod_idx); 3473 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod); 3474 readw(qedf->bdq_primary_prod); 3475 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod); 3476 readw(qedf->bdq_secondary_prod); 3477 3478 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3479 3480 /* Now that the dev_info struct has been filled in set the MAC 3481 * address 3482 */ 3483 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac); 3484 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n", 3485 qedf->mac); 3486 3487 /* 3488 * Set the WWNN and WWPN in the following way: 3489 * 3490 * If the info we get from qed is non-zero then use that to set the 3491 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based 3492 * on the MAC address. 3493 */ 3494 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) { 3495 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3496 "Setting WWPN and WWNN from qed dev_info.\n"); 3497 qedf->wwnn = qedf->dev_info.wwnn; 3498 qedf->wwpn = qedf->dev_info.wwpn; 3499 } else { 3500 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3501 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n"); 3502 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0); 3503 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0); 3504 } 3505 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx " 3506 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn); 3507 3508 sprintf(host_buf, "host_%d", host->host_no); 3509 qed_ops->common->set_name(qedf->cdev, host_buf); 3510 3511 /* Allocate cmd mgr */ 3512 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf); 3513 if (!qedf->cmd_mgr) { 3514 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n"); 3515 rc = -ENOMEM; 3516 goto err5; 3517 } 3518 3519 if (mode != QEDF_MODE_RECOVERY) { 3520 host->transportt = qedf_fc_transport_template; 3521 host->max_lun = qedf_max_lun; 3522 host->max_cmd_len = QEDF_MAX_CDB_LEN; 3523 host->can_queue = FCOE_PARAMS_NUM_TASKS; 3524 rc = scsi_add_host(host, &pdev->dev); 3525 if (rc) { 3526 QEDF_WARN(&qedf->dbg_ctx, 3527 "Error adding Scsi_Host rc=0x%x.\n", rc); 3528 goto err6; 3529 } 3530 } 3531 3532 memset(¶ms, 0, sizeof(params)); 3533 params.mtu = QEDF_LL2_BUF_SIZE; 3534 ether_addr_copy(params.ll2_mac_address, qedf->mac); 3535 3536 /* Start LL2 processing thread */ 3537 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no); 3538 qedf->ll2_recv_wq = 3539 create_workqueue(host_buf); 3540 if (!qedf->ll2_recv_wq) { 3541 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n"); 3542 rc = -ENOMEM; 3543 goto err7; 3544 } 3545 3546 #ifdef CONFIG_DEBUG_FS 3547 qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops, 3548 qedf_dbg_fops); 3549 #endif 3550 3551 /* Start LL2 */ 3552 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf); 3553 rc = qed_ops->ll2->start(qedf->cdev, ¶ms); 3554 if (rc) { 3555 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n"); 3556 goto err7; 3557 } 3558 set_bit(QEDF_LL2_STARTED, &qedf->flags); 3559 3560 /* Set initial FIP/FCoE VLAN to NULL */ 3561 qedf->vlan_id = 0; 3562 3563 /* 3564 * No need to setup fcoe_ctlr or fc_lport objects during recovery since 3565 * they were not reaped during the unload process. 3566 */ 3567 if (mode != QEDF_MODE_RECOVERY) { 3568 /* Setup imbedded fcoe controller */ 3569 qedf_fcoe_ctlr_setup(qedf); 3570 3571 /* Setup lport */ 3572 rc = qedf_lport_setup(qedf); 3573 if (rc) { 3574 QEDF_ERR(&(qedf->dbg_ctx), 3575 "qedf_lport_setup failed.\n"); 3576 goto err7; 3577 } 3578 } 3579 3580 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no); 3581 qedf->timer_work_queue = 3582 create_workqueue(host_buf); 3583 if (!qedf->timer_work_queue) { 3584 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer " 3585 "workqueue.\n"); 3586 rc = -ENOMEM; 3587 goto err7; 3588 } 3589 3590 /* DPC workqueue is not reaped during recovery unload */ 3591 if (mode != QEDF_MODE_RECOVERY) { 3592 sprintf(host_buf, "qedf_%u_dpc", 3593 qedf->lport->host->host_no); 3594 qedf->dpc_wq = create_workqueue(host_buf); 3595 } 3596 INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler); 3597 3598 /* 3599 * GRC dump and sysfs parameters are not reaped during the recovery 3600 * unload process. 3601 */ 3602 if (mode != QEDF_MODE_RECOVERY) { 3603 qedf->grcdump_size = 3604 qed_ops->common->dbg_all_data_size(qedf->cdev); 3605 if (qedf->grcdump_size) { 3606 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump, 3607 qedf->grcdump_size); 3608 if (rc) { 3609 QEDF_ERR(&(qedf->dbg_ctx), 3610 "GRC Dump buffer alloc failed.\n"); 3611 qedf->grcdump = NULL; 3612 } 3613 3614 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3615 "grcdump: addr=%p, size=%u.\n", 3616 qedf->grcdump, qedf->grcdump_size); 3617 } 3618 qedf_create_sysfs_ctx_attr(qedf); 3619 3620 /* Initialize I/O tracing for this adapter */ 3621 spin_lock_init(&qedf->io_trace_lock); 3622 qedf->io_trace_idx = 0; 3623 } 3624 3625 init_completion(&qedf->flogi_compl); 3626 3627 status = qed_ops->common->update_drv_state(qedf->cdev, true); 3628 if (status) 3629 QEDF_ERR(&(qedf->dbg_ctx), 3630 "Failed to send drv state to MFW.\n"); 3631 3632 memset(&link_params, 0, sizeof(struct qed_link_params)); 3633 link_params.link_up = true; 3634 status = qed_ops->common->set_link(qedf->cdev, &link_params); 3635 if (status) 3636 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n"); 3637 3638 /* Start/restart discovery */ 3639 if (mode == QEDF_MODE_RECOVERY) 3640 fcoe_ctlr_link_up(&qedf->ctlr); 3641 else 3642 fc_fabric_login(lport); 3643 3644 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n"); 3645 3646 clear_bit(QEDF_PROBING, &qedf->flags); 3647 3648 /* All good */ 3649 return 0; 3650 3651 err7: 3652 if (qedf->ll2_recv_wq) 3653 destroy_workqueue(qedf->ll2_recv_wq); 3654 fc_remove_host(qedf->lport->host); 3655 scsi_remove_host(qedf->lport->host); 3656 #ifdef CONFIG_DEBUG_FS 3657 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3658 #endif 3659 err6: 3660 qedf_cmd_mgr_free(qedf->cmd_mgr); 3661 err5: 3662 qed_ops->stop(qedf->cdev); 3663 err4: 3664 qedf_free_fcoe_pf_param(qedf); 3665 qedf_sync_free_irqs(qedf); 3666 err3: 3667 qed_ops->common->slowpath_stop(qedf->cdev); 3668 err2: 3669 qed_ops->common->remove(qedf->cdev); 3670 err1: 3671 scsi_host_put(lport->host); 3672 err0: 3673 if (qedf) { 3674 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n"); 3675 3676 clear_bit(QEDF_PROBING, &qedf->flags); 3677 } 3678 return rc; 3679 } 3680 3681 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id) 3682 { 3683 return __qedf_probe(pdev, QEDF_MODE_NORMAL); 3684 } 3685 3686 static void __qedf_remove(struct pci_dev *pdev, int mode) 3687 { 3688 struct qedf_ctx *qedf; 3689 int rc; 3690 3691 if (!pdev) { 3692 QEDF_ERR(NULL, "pdev is NULL.\n"); 3693 return; 3694 } 3695 3696 qedf = pci_get_drvdata(pdev); 3697 3698 /* 3699 * Prevent race where we're in board disable work and then try to 3700 * rmmod the module. 3701 */ 3702 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 3703 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n"); 3704 return; 3705 } 3706 3707 if (mode != QEDF_MODE_RECOVERY) 3708 set_bit(QEDF_UNLOADING, &qedf->flags); 3709 3710 /* Logoff the fabric to upload all connections */ 3711 if (mode == QEDF_MODE_RECOVERY) 3712 fcoe_ctlr_link_down(&qedf->ctlr); 3713 else 3714 fc_fabric_logoff(qedf->lport); 3715 3716 if (qedf_wait_for_upload(qedf) == false) 3717 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 3718 3719 #ifdef CONFIG_DEBUG_FS 3720 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3721 #endif 3722 3723 /* Stop any link update handling */ 3724 cancel_delayed_work_sync(&qedf->link_update); 3725 destroy_workqueue(qedf->link_update_wq); 3726 qedf->link_update_wq = NULL; 3727 3728 if (qedf->timer_work_queue) 3729 destroy_workqueue(qedf->timer_work_queue); 3730 3731 /* Stop Light L2 */ 3732 clear_bit(QEDF_LL2_STARTED, &qedf->flags); 3733 qed_ops->ll2->stop(qedf->cdev); 3734 if (qedf->ll2_recv_wq) 3735 destroy_workqueue(qedf->ll2_recv_wq); 3736 3737 /* Stop fastpath */ 3738 qedf_sync_free_irqs(qedf); 3739 qedf_destroy_sb(qedf); 3740 3741 /* 3742 * During recovery don't destroy OS constructs that represent the 3743 * physical port. 3744 */ 3745 if (mode != QEDF_MODE_RECOVERY) { 3746 qedf_free_grc_dump_buf(&qedf->grcdump); 3747 qedf_remove_sysfs_ctx_attr(qedf); 3748 3749 /* Remove all SCSI/libfc/libfcoe structures */ 3750 fcoe_ctlr_destroy(&qedf->ctlr); 3751 fc_lport_destroy(qedf->lport); 3752 fc_remove_host(qedf->lport->host); 3753 scsi_remove_host(qedf->lport->host); 3754 } 3755 3756 qedf_cmd_mgr_free(qedf->cmd_mgr); 3757 3758 if (mode != QEDF_MODE_RECOVERY) { 3759 fc_exch_mgr_free(qedf->lport); 3760 fc_lport_free_stats(qedf->lport); 3761 3762 /* Wait for all vports to be reaped */ 3763 qedf_wait_for_vport_destroy(qedf); 3764 } 3765 3766 /* 3767 * Now that all connections have been uploaded we can stop the 3768 * rest of the qed operations 3769 */ 3770 qed_ops->stop(qedf->cdev); 3771 3772 if (mode != QEDF_MODE_RECOVERY) { 3773 if (qedf->dpc_wq) { 3774 /* Stop general DPC handling */ 3775 destroy_workqueue(qedf->dpc_wq); 3776 qedf->dpc_wq = NULL; 3777 } 3778 } 3779 3780 /* Final shutdown for the board */ 3781 qedf_free_fcoe_pf_param(qedf); 3782 if (mode != QEDF_MODE_RECOVERY) { 3783 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3784 pci_set_drvdata(pdev, NULL); 3785 } 3786 3787 rc = qed_ops->common->update_drv_state(qedf->cdev, false); 3788 if (rc) 3789 QEDF_ERR(&(qedf->dbg_ctx), 3790 "Failed to send drv state to MFW.\n"); 3791 3792 qed_ops->common->slowpath_stop(qedf->cdev); 3793 qed_ops->common->remove(qedf->cdev); 3794 3795 mempool_destroy(qedf->io_mempool); 3796 3797 /* Only reap the Scsi_host on a real removal */ 3798 if (mode != QEDF_MODE_RECOVERY) 3799 scsi_host_put(qedf->lport->host); 3800 } 3801 3802 static void qedf_remove(struct pci_dev *pdev) 3803 { 3804 /* Check to make sure this function wasn't already disabled */ 3805 if (!atomic_read(&pdev->enable_cnt)) 3806 return; 3807 3808 __qedf_remove(pdev, QEDF_MODE_NORMAL); 3809 } 3810 3811 void qedf_wq_grcdump(struct work_struct *work) 3812 { 3813 struct qedf_ctx *qedf = 3814 container_of(work, struct qedf_ctx, grcdump_work.work); 3815 3816 QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n"); 3817 qedf_capture_grc_dump(qedf); 3818 } 3819 3820 void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type) 3821 { 3822 struct qedf_ctx *qedf = dev; 3823 3824 QEDF_ERR(&(qedf->dbg_ctx), 3825 "Hardware error handler scheduled, event=%d.\n", 3826 err_type); 3827 3828 if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) { 3829 QEDF_ERR(&(qedf->dbg_ctx), 3830 "Already in recovery, not scheduling board disable work.\n"); 3831 return; 3832 } 3833 3834 switch (err_type) { 3835 case QED_HW_ERR_FAN_FAIL: 3836 schedule_delayed_work(&qedf->board_disable_work, 0); 3837 break; 3838 case QED_HW_ERR_MFW_RESP_FAIL: 3839 case QED_HW_ERR_HW_ATTN: 3840 case QED_HW_ERR_DMAE_FAIL: 3841 case QED_HW_ERR_FW_ASSERT: 3842 /* Prevent HW attentions from being reasserted */ 3843 qed_ops->common->attn_clr_enable(qedf->cdev, true); 3844 break; 3845 case QED_HW_ERR_RAMROD_FAIL: 3846 /* Prevent HW attentions from being reasserted */ 3847 qed_ops->common->attn_clr_enable(qedf->cdev, true); 3848 3849 if (qedf_enable_recovery) 3850 qed_ops->common->recovery_process(qedf->cdev); 3851 3852 break; 3853 default: 3854 break; 3855 } 3856 } 3857 3858 /* 3859 * Protocol TLV handler 3860 */ 3861 void qedf_get_protocol_tlv_data(void *dev, void *data) 3862 { 3863 struct qedf_ctx *qedf = dev; 3864 struct qed_mfw_tlv_fcoe *fcoe = data; 3865 struct fc_lport *lport; 3866 struct Scsi_Host *host; 3867 struct fc_host_attrs *fc_host; 3868 struct fc_host_statistics *hst; 3869 3870 if (!qedf) { 3871 QEDF_ERR(NULL, "qedf is null.\n"); 3872 return; 3873 } 3874 3875 if (test_bit(QEDF_PROBING, &qedf->flags)) { 3876 QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n"); 3877 return; 3878 } 3879 3880 lport = qedf->lport; 3881 host = lport->host; 3882 fc_host = shost_to_fc_host(host); 3883 3884 /* Force a refresh of the fc_host stats including offload stats */ 3885 hst = qedf_fc_get_host_stats(host); 3886 3887 fcoe->qos_pri_set = true; 3888 fcoe->qos_pri = 3; /* Hard coded to 3 in driver */ 3889 3890 fcoe->ra_tov_set = true; 3891 fcoe->ra_tov = lport->r_a_tov; 3892 3893 fcoe->ed_tov_set = true; 3894 fcoe->ed_tov = lport->e_d_tov; 3895 3896 fcoe->npiv_state_set = true; 3897 fcoe->npiv_state = 1; /* NPIV always enabled */ 3898 3899 fcoe->num_npiv_ids_set = true; 3900 fcoe->num_npiv_ids = fc_host->npiv_vports_inuse; 3901 3902 /* Certain attributes we only want to set if we've selected an FCF */ 3903 if (qedf->ctlr.sel_fcf) { 3904 fcoe->switch_name_set = true; 3905 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name); 3906 } 3907 3908 fcoe->port_state_set = true; 3909 /* For qedf we're either link down or fabric attach */ 3910 if (lport->link_up) 3911 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC; 3912 else 3913 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE; 3914 3915 fcoe->link_failures_set = true; 3916 fcoe->link_failures = (u16)hst->link_failure_count; 3917 3918 fcoe->fcoe_txq_depth_set = true; 3919 fcoe->fcoe_rxq_depth_set = true; 3920 fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS; 3921 fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS; 3922 3923 fcoe->fcoe_rx_frames_set = true; 3924 fcoe->fcoe_rx_frames = hst->rx_frames; 3925 3926 fcoe->fcoe_tx_frames_set = true; 3927 fcoe->fcoe_tx_frames = hst->tx_frames; 3928 3929 fcoe->fcoe_rx_bytes_set = true; 3930 fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000; 3931 3932 fcoe->fcoe_tx_bytes_set = true; 3933 fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000; 3934 3935 fcoe->crc_count_set = true; 3936 fcoe->crc_count = hst->invalid_crc_count; 3937 3938 fcoe->tx_abts_set = true; 3939 fcoe->tx_abts = hst->fcp_packet_aborts; 3940 3941 fcoe->tx_lun_rst_set = true; 3942 fcoe->tx_lun_rst = qedf->lun_resets; 3943 3944 fcoe->abort_task_sets_set = true; 3945 fcoe->abort_task_sets = qedf->packet_aborts; 3946 3947 fcoe->scsi_busy_set = true; 3948 fcoe->scsi_busy = qedf->busy; 3949 3950 fcoe->scsi_tsk_full_set = true; 3951 fcoe->scsi_tsk_full = qedf->task_set_fulls; 3952 } 3953 3954 /* Deferred work function to perform soft context reset on STAG change */ 3955 void qedf_stag_change_work(struct work_struct *work) 3956 { 3957 struct qedf_ctx *qedf = 3958 container_of(work, struct qedf_ctx, stag_work.work); 3959 3960 if (!qedf) { 3961 QEDF_ERR(NULL, "qedf is NULL"); 3962 return; 3963 } 3964 QEDF_ERR(&qedf->dbg_ctx, "Performing software context reset.\n"); 3965 qedf_ctx_soft_reset(qedf->lport); 3966 } 3967 3968 static void qedf_shutdown(struct pci_dev *pdev) 3969 { 3970 __qedf_remove(pdev, QEDF_MODE_NORMAL); 3971 } 3972 3973 /* 3974 * Recovery handler code 3975 */ 3976 static void qedf_schedule_recovery_handler(void *dev) 3977 { 3978 struct qedf_ctx *qedf = dev; 3979 3980 QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n"); 3981 schedule_delayed_work(&qedf->recovery_work, 0); 3982 } 3983 3984 static void qedf_recovery_handler(struct work_struct *work) 3985 { 3986 struct qedf_ctx *qedf = 3987 container_of(work, struct qedf_ctx, recovery_work.work); 3988 3989 if (test_and_set_bit(QEDF_IN_RECOVERY, &qedf->flags)) 3990 return; 3991 3992 /* 3993 * Call common_ops->recovery_prolog to allow the MFW to quiesce 3994 * any PCI transactions. 3995 */ 3996 qed_ops->common->recovery_prolog(qedf->cdev); 3997 3998 QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n"); 3999 __qedf_remove(qedf->pdev, QEDF_MODE_RECOVERY); 4000 /* 4001 * Reset link and dcbx to down state since we will not get a link down 4002 * event from the MFW but calling __qedf_remove will essentially be a 4003 * link down event. 4004 */ 4005 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 4006 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 4007 __qedf_probe(qedf->pdev, QEDF_MODE_RECOVERY); 4008 clear_bit(QEDF_IN_RECOVERY, &qedf->flags); 4009 QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n"); 4010 } 4011 4012 /* Generic TLV data callback */ 4013 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 4014 { 4015 struct qedf_ctx *qedf; 4016 4017 if (!dev) { 4018 QEDF_INFO(NULL, QEDF_LOG_EVT, 4019 "dev is NULL so ignoring get_generic_tlv_data request.\n"); 4020 return; 4021 } 4022 qedf = (struct qedf_ctx *)dev; 4023 4024 memset(data, 0, sizeof(struct qed_generic_tlvs)); 4025 ether_addr_copy(data->mac[0], qedf->mac); 4026 } 4027 4028 /* 4029 * Module Init/Remove 4030 */ 4031 4032 static int __init qedf_init(void) 4033 { 4034 int ret; 4035 4036 /* If debug=1 passed, set the default log mask */ 4037 if (qedf_debug == QEDF_LOG_DEFAULT) 4038 qedf_debug = QEDF_DEFAULT_LOG_MASK; 4039 4040 /* 4041 * Check that default prio for FIP/FCoE traffic is between 0..7 if a 4042 * value has been set 4043 */ 4044 if (qedf_default_prio > -1) 4045 if (qedf_default_prio > 7) { 4046 qedf_default_prio = QEDF_DEFAULT_PRIO; 4047 QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n", 4048 QEDF_DEFAULT_PRIO); 4049 } 4050 4051 /* Print driver banner */ 4052 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR, 4053 QEDF_VERSION); 4054 4055 /* Create kmem_cache for qedf_io_work structs */ 4056 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache", 4057 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL); 4058 if (qedf_io_work_cache == NULL) { 4059 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n"); 4060 goto err1; 4061 } 4062 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n", 4063 qedf_io_work_cache); 4064 4065 qed_ops = qed_get_fcoe_ops(); 4066 if (!qed_ops) { 4067 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n"); 4068 goto err1; 4069 } 4070 4071 #ifdef CONFIG_DEBUG_FS 4072 qedf_dbg_init("qedf"); 4073 #endif 4074 4075 qedf_fc_transport_template = 4076 fc_attach_transport(&qedf_fc_transport_fn); 4077 if (!qedf_fc_transport_template) { 4078 QEDF_ERR(NULL, "Could not register with FC transport\n"); 4079 goto err2; 4080 } 4081 4082 qedf_fc_vport_transport_template = 4083 fc_attach_transport(&qedf_fc_vport_transport_fn); 4084 if (!qedf_fc_vport_transport_template) { 4085 QEDF_ERR(NULL, "Could not register vport template with FC " 4086 "transport\n"); 4087 goto err3; 4088 } 4089 4090 qedf_io_wq = create_workqueue("qedf_io_wq"); 4091 if (!qedf_io_wq) { 4092 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n"); 4093 goto err4; 4094 } 4095 4096 qedf_cb_ops.get_login_failures = qedf_get_login_failures; 4097 4098 ret = pci_register_driver(&qedf_pci_driver); 4099 if (ret) { 4100 QEDF_ERR(NULL, "Failed to register driver\n"); 4101 goto err5; 4102 } 4103 4104 return 0; 4105 4106 err5: 4107 destroy_workqueue(qedf_io_wq); 4108 err4: 4109 fc_release_transport(qedf_fc_vport_transport_template); 4110 err3: 4111 fc_release_transport(qedf_fc_transport_template); 4112 err2: 4113 #ifdef CONFIG_DEBUG_FS 4114 qedf_dbg_exit(); 4115 #endif 4116 qed_put_fcoe_ops(); 4117 err1: 4118 return -EINVAL; 4119 } 4120 4121 static void __exit qedf_cleanup(void) 4122 { 4123 pci_unregister_driver(&qedf_pci_driver); 4124 4125 destroy_workqueue(qedf_io_wq); 4126 4127 fc_release_transport(qedf_fc_vport_transport_template); 4128 fc_release_transport(qedf_fc_transport_template); 4129 #ifdef CONFIG_DEBUG_FS 4130 qedf_dbg_exit(); 4131 #endif 4132 qed_put_fcoe_ops(); 4133 4134 kmem_cache_destroy(qedf_io_work_cache); 4135 } 4136 4137 MODULE_LICENSE("GPL"); 4138 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module"); 4139 MODULE_AUTHOR("QLogic Corporation"); 4140 MODULE_VERSION(QEDF_VERSION); 4141 module_init(qedf_init); 4142 module_exit(qedf_cleanup); 4143