1 /* 2 * QLogic FCoE Offload Driver 3 * Copyright (c) 2016-2018 Cavium Inc. 4 * 5 * This software is available under the terms of the GNU General Public License 6 * (GPL) Version 2, available from the file COPYING in the main directory of 7 * this source tree. 8 */ 9 #include <linux/init.h> 10 #include <linux/kernel.h> 11 #include <linux/module.h> 12 #include <linux/pci.h> 13 #include <linux/device.h> 14 #include <linux/highmem.h> 15 #include <linux/crc32.h> 16 #include <linux/interrupt.h> 17 #include <linux/list.h> 18 #include <linux/kthread.h> 19 #include <scsi/libfc.h> 20 #include <scsi/scsi_host.h> 21 #include <scsi/fc_frame.h> 22 #include <linux/if_ether.h> 23 #include <linux/if_vlan.h> 24 #include <linux/cpu.h> 25 #include "qedf.h" 26 #include "qedf_dbg.h" 27 #include <uapi/linux/pci_regs.h> 28 29 const struct qed_fcoe_ops *qed_ops; 30 31 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id); 32 static void qedf_remove(struct pci_dev *pdev); 33 34 /* 35 * Driver module parameters. 36 */ 37 static unsigned int qedf_dev_loss_tmo = 60; 38 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO); 39 MODULE_PARM_DESC(dev_loss_tmo, " dev_loss_tmo setting for attached " 40 "remote ports (default 60)"); 41 42 uint qedf_debug = QEDF_LOG_INFO; 43 module_param_named(debug, qedf_debug, uint, S_IRUGO); 44 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging" 45 " mask"); 46 47 static uint qedf_fipvlan_retries = 60; 48 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO); 49 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt " 50 "before giving up (default 60)"); 51 52 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN; 53 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO); 54 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails " 55 "(default 1002)."); 56 57 static int qedf_default_prio = -1; 58 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO); 59 MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE" 60 " traffic (value between 0 and 7, default 3)."); 61 62 uint qedf_dump_frames; 63 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR); 64 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames " 65 "(default off)"); 66 67 static uint qedf_queue_depth; 68 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO); 69 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered " 70 "by the qedf driver. Default is 0 (use OS default)."); 71 72 uint qedf_io_tracing; 73 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR); 74 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions " 75 "into trace buffer. (default off)."); 76 77 static uint qedf_max_lun = MAX_FIBRE_LUNS; 78 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO); 79 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver " 80 "supports. (default 0xffffffff)"); 81 82 uint qedf_link_down_tmo; 83 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO); 84 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the " 85 "link is down by N seconds."); 86 87 bool qedf_retry_delay; 88 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR); 89 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry " 90 "delay handling (default off)."); 91 92 static bool qedf_dcbx_no_wait; 93 module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR); 94 MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start " 95 "sending FIP VLAN requests on link up (Default: off)."); 96 97 static uint qedf_dp_module; 98 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO); 99 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed " 100 "qed module during probe."); 101 102 static uint qedf_dp_level = QED_LEVEL_NOTICE; 103 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO); 104 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module " 105 "during probe (0-3: 0 more verbose)."); 106 107 struct workqueue_struct *qedf_io_wq; 108 109 static struct fcoe_percpu_s qedf_global; 110 static DEFINE_SPINLOCK(qedf_global_lock); 111 112 static struct kmem_cache *qedf_io_work_cache; 113 114 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id) 115 { 116 qedf->vlan_id = vlan_id; 117 qedf->vlan_id |= qedf->prio << VLAN_PRIO_SHIFT; 118 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Setting vlan_id=%04x " 119 "prio=%d.\n", vlan_id, qedf->prio); 120 } 121 122 /* Returns true if we have a valid vlan, false otherwise */ 123 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf) 124 { 125 int rc; 126 127 while (qedf->fipvlan_retries--) { 128 /* This is to catch if link goes down during fipvlan retries */ 129 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 130 QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n"); 131 return false; 132 } 133 134 if (qedf->vlan_id > 0) 135 return true; 136 137 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 138 "Retry %d.\n", qedf->fipvlan_retries); 139 init_completion(&qedf->fipvlan_compl); 140 qedf_fcoe_send_vlan_req(qedf); 141 rc = wait_for_completion_timeout(&qedf->fipvlan_compl, 142 1 * HZ); 143 if (rc > 0 && 144 (atomic_read(&qedf->link_state) == QEDF_LINK_UP)) { 145 fcoe_ctlr_link_up(&qedf->ctlr); 146 return true; 147 } 148 } 149 150 return false; 151 } 152 153 static void qedf_handle_link_update(struct work_struct *work) 154 { 155 struct qedf_ctx *qedf = 156 container_of(work, struct qedf_ctx, link_update.work); 157 int rc; 158 159 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n", 160 atomic_read(&qedf->link_state)); 161 162 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 163 rc = qedf_initiate_fipvlan_req(qedf); 164 if (rc) 165 return; 166 167 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 168 qedf->vlan_id = 0; 169 return; 170 } 171 172 /* 173 * If we get here then we never received a repsonse to our 174 * fip vlan request so set the vlan_id to the default and 175 * tell FCoE that the link is up 176 */ 177 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN " 178 "response, falling back to default VLAN %d.\n", 179 qedf_fallback_vlan); 180 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 181 182 /* 183 * Zero out data_src_addr so we'll update it with the new 184 * lport port_id 185 */ 186 eth_zero_addr(qedf->data_src_addr); 187 fcoe_ctlr_link_up(&qedf->ctlr); 188 } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 189 /* 190 * If we hit here and link_down_tmo_valid is still 1 it means 191 * that link_down_tmo timed out so set it to 0 to make sure any 192 * other readers have accurate state. 193 */ 194 atomic_set(&qedf->link_down_tmo_valid, 0); 195 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 196 "Calling fcoe_ctlr_link_down().\n"); 197 fcoe_ctlr_link_down(&qedf->ctlr); 198 if (qedf_wait_for_upload(qedf) == false) 199 QEDF_ERR(&qedf->dbg_ctx, 200 "Could not upload all sessions.\n"); 201 /* Reset the number of FIP VLAN retries */ 202 qedf->fipvlan_retries = qedf_fipvlan_retries; 203 } 204 } 205 206 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1 207 #define QEDF_FCOE_MAC_METHOD_FCF_MAP 2 208 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3 209 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp) 210 { 211 u8 *granted_mac; 212 struct fc_frame_header *fh = fc_frame_header_get(fp); 213 u8 fc_map[3]; 214 int method = 0; 215 216 /* Get granted MAC address from FIP FLOGI payload */ 217 granted_mac = fr_cb(fp)->granted_mac; 218 219 /* 220 * We set the source MAC for FCoE traffic based on the Granted MAC 221 * address from the switch. 222 * 223 * If granted_mac is non-zero, we used that. 224 * If the granted_mac is zeroed out, created the FCoE MAC based on 225 * the sel_fcf->fc_map and the d_id fo the FLOGI frame. 226 * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the 227 * d_id of the FLOGI frame. 228 */ 229 if (!is_zero_ether_addr(granted_mac)) { 230 ether_addr_copy(qedf->data_src_addr, granted_mac); 231 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC; 232 } else if (qedf->ctlr.sel_fcf->fc_map != 0) { 233 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map); 234 qedf->data_src_addr[0] = fc_map[0]; 235 qedf->data_src_addr[1] = fc_map[1]; 236 qedf->data_src_addr[2] = fc_map[2]; 237 qedf->data_src_addr[3] = fh->fh_d_id[0]; 238 qedf->data_src_addr[4] = fh->fh_d_id[1]; 239 qedf->data_src_addr[5] = fh->fh_d_id[2]; 240 method = QEDF_FCOE_MAC_METHOD_FCF_MAP; 241 } else { 242 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id); 243 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC; 244 } 245 246 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 247 "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method); 248 } 249 250 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp, 251 void *arg) 252 { 253 struct fc_exch *exch = fc_seq_exch(seq); 254 struct fc_lport *lport = exch->lp; 255 struct qedf_ctx *qedf = lport_priv(lport); 256 257 if (!qedf) { 258 QEDF_ERR(NULL, "qedf is NULL.\n"); 259 return; 260 } 261 262 /* 263 * If ERR_PTR is set then don't try to stat anything as it will cause 264 * a crash when we access fp. 265 */ 266 if (IS_ERR(fp)) { 267 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 268 "fp has IS_ERR() set.\n"); 269 goto skip_stat; 270 } 271 272 /* Log stats for FLOGI reject */ 273 if (fc_frame_payload_op(fp) == ELS_LS_RJT) 274 qedf->flogi_failed++; 275 else if (fc_frame_payload_op(fp) == ELS_LS_ACC) { 276 /* Set the source MAC we will use for FCoE traffic */ 277 qedf_set_data_src_addr(qedf, fp); 278 } 279 280 /* Complete flogi_compl so we can proceed to sending ADISCs */ 281 complete(&qedf->flogi_compl); 282 283 skip_stat: 284 /* Report response to libfc */ 285 fc_lport_flogi_resp(seq, fp, lport); 286 } 287 288 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did, 289 struct fc_frame *fp, unsigned int op, 290 void (*resp)(struct fc_seq *, 291 struct fc_frame *, 292 void *), 293 void *arg, u32 timeout) 294 { 295 struct qedf_ctx *qedf = lport_priv(lport); 296 297 /* 298 * Intercept FLOGI for statistic purposes. Note we use the resp 299 * callback to tell if this is really a flogi. 300 */ 301 if (resp == fc_lport_flogi_resp) { 302 qedf->flogi_cnt++; 303 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp, 304 arg, timeout); 305 } 306 307 return fc_elsct_send(lport, did, fp, op, resp, arg, timeout); 308 } 309 310 int qedf_send_flogi(struct qedf_ctx *qedf) 311 { 312 struct fc_lport *lport; 313 struct fc_frame *fp; 314 315 lport = qedf->lport; 316 317 if (!lport->tt.elsct_send) 318 return -EINVAL; 319 320 fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); 321 if (!fp) { 322 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n"); 323 return -ENOMEM; 324 } 325 326 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 327 "Sending FLOGI to reestablish session with switch.\n"); 328 lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, 329 ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov); 330 331 init_completion(&qedf->flogi_compl); 332 333 return 0; 334 } 335 336 struct qedf_tmp_rdata_item { 337 struct fc_rport_priv *rdata; 338 struct list_head list; 339 }; 340 341 /* 342 * This function is called if link_down_tmo is in use. If we get a link up and 343 * link_down_tmo has not expired then use just FLOGI/ADISC to recover our 344 * sessions with targets. Otherwise, just call fcoe_ctlr_link_up(). 345 */ 346 static void qedf_link_recovery(struct work_struct *work) 347 { 348 struct qedf_ctx *qedf = 349 container_of(work, struct qedf_ctx, link_recovery.work); 350 struct qedf_rport *fcport; 351 struct fc_rport_priv *rdata; 352 struct qedf_tmp_rdata_item *rdata_item, *tmp_rdata_item; 353 bool rc; 354 int retries = 30; 355 int rval, i; 356 struct list_head rdata_login_list; 357 358 INIT_LIST_HEAD(&rdata_login_list); 359 360 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 361 "Link down tmo did not expire.\n"); 362 363 /* 364 * Essentially reset the fcoe_ctlr here without affecting the state 365 * of the libfc structs. 366 */ 367 qedf->ctlr.state = FIP_ST_LINK_WAIT; 368 fcoe_ctlr_link_down(&qedf->ctlr); 369 370 /* 371 * Bring the link up before we send the fipvlan request so libfcoe 372 * can select a new fcf in parallel 373 */ 374 fcoe_ctlr_link_up(&qedf->ctlr); 375 376 /* Since the link when down and up to verify which vlan we're on */ 377 qedf->fipvlan_retries = qedf_fipvlan_retries; 378 rc = qedf_initiate_fipvlan_req(qedf); 379 /* If getting the VLAN fails, set the VLAN to the fallback one */ 380 if (!rc) 381 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 382 383 /* 384 * We need to wait for an FCF to be selected due to the 385 * fcoe_ctlr_link_up other the FLOGI will be rejected. 386 */ 387 while (retries > 0) { 388 if (qedf->ctlr.sel_fcf) { 389 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 390 "FCF reselected, proceeding with FLOGI.\n"); 391 break; 392 } 393 msleep(500); 394 retries--; 395 } 396 397 if (retries < 1) { 398 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for " 399 "FCF selection.\n"); 400 return; 401 } 402 403 rval = qedf_send_flogi(qedf); 404 if (rval) 405 return; 406 407 /* Wait for FLOGI completion before proceeding with sending ADISCs */ 408 i = wait_for_completion_timeout(&qedf->flogi_compl, 409 qedf->lport->r_a_tov); 410 if (i == 0) { 411 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n"); 412 return; 413 } 414 415 /* 416 * Call lport->tt.rport_login which will cause libfc to send an 417 * ADISC since the rport is in state ready. 418 */ 419 rcu_read_lock(); 420 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 421 rdata = fcport->rdata; 422 if (rdata == NULL) 423 continue; 424 rdata_item = kzalloc(sizeof(struct qedf_tmp_rdata_item), 425 GFP_ATOMIC); 426 if (!rdata_item) 427 continue; 428 if (kref_get_unless_zero(&rdata->kref)) { 429 rdata_item->rdata = rdata; 430 list_add(&rdata_item->list, &rdata_login_list); 431 } else 432 kfree(rdata_item); 433 } 434 rcu_read_unlock(); 435 /* 436 * Do the fc_rport_login outside of the rcu lock so we don't take a 437 * mutex in an atomic context. 438 */ 439 list_for_each_entry_safe(rdata_item, tmp_rdata_item, &rdata_login_list, 440 list) { 441 list_del(&rdata_item->list); 442 fc_rport_login(rdata_item->rdata); 443 kref_put(&rdata_item->rdata->kref, fc_rport_destroy); 444 kfree(rdata_item); 445 } 446 } 447 448 static void qedf_update_link_speed(struct qedf_ctx *qedf, 449 struct qed_link_output *link) 450 { 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 default: 474 lport->link_speed = FC_PORTSPEED_UNKNOWN; 475 break; 476 } 477 478 /* 479 * Set supported link speed by querying the supported 480 * capabilities of the link. 481 */ 482 if (link->supported_caps & SUPPORTED_10000baseKR_Full) 483 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT; 484 if (link->supported_caps & SUPPORTED_25000baseKR_Full) 485 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT; 486 if (link->supported_caps & SUPPORTED_40000baseLR4_Full) 487 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT; 488 if (link->supported_caps & SUPPORTED_50000baseKR2_Full) 489 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT; 490 if (link->supported_caps & SUPPORTED_100000baseKR4_Full) 491 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT; 492 fc_host_supported_speeds(lport->host) = lport->link_supported_speeds; 493 } 494 495 static void qedf_link_update(void *dev, struct qed_link_output *link) 496 { 497 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 498 499 if (link->link_up) { 500 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 501 QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC, 502 "Ignoring link up event as link is already up.\n"); 503 return; 504 } 505 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n", 506 link->speed / 1000); 507 508 /* Cancel any pending link down work */ 509 cancel_delayed_work(&qedf->link_update); 510 511 atomic_set(&qedf->link_state, QEDF_LINK_UP); 512 qedf_update_link_speed(qedf, link); 513 514 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE || 515 qedf_dcbx_no_wait) { 516 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 517 "DCBx done.\n"); 518 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 519 queue_delayed_work(qedf->link_update_wq, 520 &qedf->link_recovery, 0); 521 else 522 queue_delayed_work(qedf->link_update_wq, 523 &qedf->link_update, 0); 524 atomic_set(&qedf->link_down_tmo_valid, 0); 525 } 526 527 } else { 528 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n"); 529 530 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 531 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 532 /* 533 * Flag that we're waiting for the link to come back up before 534 * informing the fcoe layer of the event. 535 */ 536 if (qedf_link_down_tmo > 0) { 537 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 538 "Starting link down tmo.\n"); 539 atomic_set(&qedf->link_down_tmo_valid, 1); 540 } 541 qedf->vlan_id = 0; 542 qedf_update_link_speed(qedf, link); 543 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 544 qedf_link_down_tmo * HZ); 545 } 546 } 547 548 549 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type) 550 { 551 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 552 u8 tmp_prio; 553 554 QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe " 555 "prio=%d.\n", get->operational.valid, get->operational.enabled, 556 get->operational.app_prio.fcoe); 557 558 if (get->operational.enabled && get->operational.valid) { 559 /* If DCBX was already negotiated on link up then just exit */ 560 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) { 561 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 562 "DCBX already set on link up.\n"); 563 return; 564 } 565 566 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE); 567 568 /* 569 * Set the 8021q priority in the following manner: 570 * 571 * 1. If a modparam is set use that 572 * 2. If the value is not between 0..7 use the default 573 * 3. Use the priority we get from the DCBX app tag 574 */ 575 tmp_prio = get->operational.app_prio.fcoe; 576 if (qedf_default_prio > -1) 577 qedf->prio = qedf_default_prio; 578 else if (tmp_prio < 0 || tmp_prio > 7) { 579 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 580 "FIP/FCoE prio %d out of range, setting to %d.\n", 581 tmp_prio, QEDF_DEFAULT_PRIO); 582 qedf->prio = QEDF_DEFAULT_PRIO; 583 } else 584 qedf->prio = tmp_prio; 585 586 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP && 587 !qedf_dcbx_no_wait) { 588 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 589 queue_delayed_work(qedf->link_update_wq, 590 &qedf->link_recovery, 0); 591 else 592 queue_delayed_work(qedf->link_update_wq, 593 &qedf->link_update, 0); 594 atomic_set(&qedf->link_down_tmo_valid, 0); 595 } 596 } 597 598 } 599 600 static u32 qedf_get_login_failures(void *cookie) 601 { 602 struct qedf_ctx *qedf; 603 604 qedf = (struct qedf_ctx *)cookie; 605 return qedf->flogi_failed; 606 } 607 608 static struct qed_fcoe_cb_ops qedf_cb_ops = { 609 { 610 .link_update = qedf_link_update, 611 .dcbx_aen = qedf_dcbx_handler, 612 .get_generic_tlv_data = qedf_get_generic_tlv_data, 613 .get_protocol_tlv_data = qedf_get_protocol_tlv_data, 614 } 615 }; 616 617 /* 618 * Various transport templates. 619 */ 620 621 static struct scsi_transport_template *qedf_fc_transport_template; 622 static struct scsi_transport_template *qedf_fc_vport_transport_template; 623 624 /* 625 * SCSI EH handlers 626 */ 627 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd) 628 { 629 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); 630 struct fc_lport *lport; 631 struct qedf_ctx *qedf; 632 struct qedf_ioreq *io_req; 633 struct fc_rport_libfc_priv *rp = rport->dd_data; 634 struct fc_rport_priv *rdata; 635 struct qedf_rport *fcport = NULL; 636 int rc = FAILED; 637 int wait_count = 100; 638 int refcount = 0; 639 int rval; 640 int got_ref = 0; 641 642 lport = shost_priv(sc_cmd->device->host); 643 qedf = (struct qedf_ctx *)lport_priv(lport); 644 645 /* rport and tgt are allocated together, so tgt should be non-NULL */ 646 fcport = (struct qedf_rport *)&rp[1]; 647 rdata = fcport->rdata; 648 if (!rdata || !kref_get_unless_zero(&rdata->kref)) { 649 QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd); 650 rc = 1; 651 goto out; 652 } 653 654 655 io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr; 656 if (!io_req) { 657 QEDF_ERR(&qedf->dbg_ctx, 658 "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n", 659 sc_cmd, sc_cmd->cmnd[0], 660 rdata->ids.port_id); 661 rc = SUCCESS; 662 goto drop_rdata_kref; 663 } 664 665 rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */ 666 if (rval) 667 got_ref = 1; 668 669 /* If we got a valid io_req, confirm it belongs to this sc_cmd. */ 670 if (!rval || io_req->sc_cmd != sc_cmd) { 671 QEDF_ERR(&qedf->dbg_ctx, 672 "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n", 673 io_req->sc_cmd, sc_cmd, rdata->ids.port_id); 674 675 goto drop_rdata_kref; 676 } 677 678 if (fc_remote_port_chkready(rport)) { 679 refcount = kref_read(&io_req->refcount); 680 QEDF_ERR(&qedf->dbg_ctx, 681 "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n", 682 io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0], 683 refcount, rdata->ids.port_id); 684 685 goto drop_rdata_kref; 686 } 687 688 rc = fc_block_scsi_eh(sc_cmd); 689 if (rc) 690 goto drop_rdata_kref; 691 692 if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) { 693 QEDF_ERR(&qedf->dbg_ctx, 694 "Connection uploading, xid=0x%x., port_id=%06x\n", 695 io_req->xid, rdata->ids.port_id); 696 while (io_req->sc_cmd && (wait_count != 0)) { 697 msleep(100); 698 wait_count--; 699 } 700 if (wait_count) { 701 QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n"); 702 rc = SUCCESS; 703 } else { 704 QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n"); 705 rc = FAILED; 706 } 707 goto drop_rdata_kref; 708 } 709 710 if (lport->state != LPORT_ST_READY || !(lport->link_up)) { 711 QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n"); 712 goto drop_rdata_kref; 713 } 714 715 QEDF_ERR(&qedf->dbg_ctx, 716 "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n", 717 io_req, sc_cmd, io_req->xid, io_req->fp_idx, 718 rdata->ids.port_id); 719 720 if (qedf->stop_io_on_error) { 721 qedf_stop_all_io(qedf); 722 rc = SUCCESS; 723 goto drop_rdata_kref; 724 } 725 726 init_completion(&io_req->abts_done); 727 rval = qedf_initiate_abts(io_req, true); 728 if (rval) { 729 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n"); 730 /* 731 * If we fail to queue the ABTS then return this command to 732 * the SCSI layer as it will own and free the xid 733 */ 734 rc = SUCCESS; 735 qedf_scsi_done(qedf, io_req, DID_ERROR); 736 goto drop_rdata_kref; 737 } 738 739 wait_for_completion(&io_req->abts_done); 740 741 if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS || 742 io_req->event == QEDF_IOREQ_EV_ABORT_FAILED || 743 io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) { 744 /* 745 * If we get a reponse to the abort this is success from 746 * the perspective that all references to the command have 747 * been removed from the driver and firmware 748 */ 749 rc = SUCCESS; 750 } else { 751 /* If the abort and cleanup failed then return a failure */ 752 rc = FAILED; 753 } 754 755 if (rc == SUCCESS) 756 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n", 757 io_req->xid); 758 else 759 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n", 760 io_req->xid); 761 762 drop_rdata_kref: 763 kref_put(&rdata->kref, fc_rport_destroy); 764 out: 765 if (got_ref) 766 kref_put(&io_req->refcount, qedf_release_cmd); 767 return rc; 768 } 769 770 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd) 771 { 772 QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...", 773 sc_cmd->device->host->host_no, sc_cmd->device->id, 774 sc_cmd->device->lun); 775 return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET); 776 } 777 778 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd) 779 { 780 QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ", 781 sc_cmd->device->host->host_no, sc_cmd->device->id, 782 sc_cmd->device->lun); 783 return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET); 784 } 785 786 bool qedf_wait_for_upload(struct qedf_ctx *qedf) 787 { 788 struct qedf_rport *fcport = NULL; 789 int wait_cnt = 120; 790 791 while (wait_cnt--) { 792 if (atomic_read(&qedf->num_offloads)) 793 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 794 "Waiting for all uploads to complete num_offloads = 0x%x.\n", 795 atomic_read(&qedf->num_offloads)); 796 else 797 return true; 798 msleep(500); 799 } 800 801 rcu_read_lock(); 802 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 803 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, 804 &fcport->flags)) { 805 if (fcport->rdata) 806 QEDF_ERR(&qedf->dbg_ctx, 807 "Waiting for fcport %p portid=%06x.\n", 808 fcport, fcport->rdata->ids.port_id); 809 } else { 810 QEDF_ERR(&qedf->dbg_ctx, 811 "Waiting for fcport %p.\n", fcport); 812 } 813 } 814 rcu_read_unlock(); 815 return false; 816 817 } 818 819 /* Performs soft reset of qedf_ctx by simulating a link down/up */ 820 void qedf_ctx_soft_reset(struct fc_lport *lport) 821 { 822 struct qedf_ctx *qedf; 823 struct qed_link_output if_link; 824 825 if (lport->vport) { 826 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n"); 827 return; 828 } 829 830 qedf = lport_priv(lport); 831 832 /* For host reset, essentially do a soft link up/down */ 833 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 834 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 835 "Queuing link down work.\n"); 836 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 837 0); 838 839 if (qedf_wait_for_upload(qedf) == false) { 840 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 841 WARN_ON(atomic_read(&qedf->num_offloads)); 842 } 843 844 /* Before setting link up query physical link state */ 845 qed_ops->common->get_link(qedf->cdev, &if_link); 846 /* Bail if the physical link is not up */ 847 if (!if_link.link_up) { 848 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 849 "Physical link is not up.\n"); 850 return; 851 } 852 /* Flush and wait to make sure link down is processed */ 853 flush_delayed_work(&qedf->link_update); 854 msleep(500); 855 856 atomic_set(&qedf->link_state, QEDF_LINK_UP); 857 qedf->vlan_id = 0; 858 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 859 "Queue link up work.\n"); 860 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 861 0); 862 } 863 864 /* Reset the host by gracefully logging out and then logging back in */ 865 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd) 866 { 867 struct fc_lport *lport; 868 struct qedf_ctx *qedf; 869 870 lport = shost_priv(sc_cmd->device->host); 871 qedf = lport_priv(lport); 872 873 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN || 874 test_bit(QEDF_UNLOADING, &qedf->flags)) 875 return FAILED; 876 877 QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued..."); 878 879 qedf_ctx_soft_reset(lport); 880 881 return SUCCESS; 882 } 883 884 static int qedf_slave_configure(struct scsi_device *sdev) 885 { 886 if (qedf_queue_depth) { 887 scsi_change_queue_depth(sdev, qedf_queue_depth); 888 } 889 890 return 0; 891 } 892 893 static struct scsi_host_template qedf_host_template = { 894 .module = THIS_MODULE, 895 .name = QEDF_MODULE_NAME, 896 .this_id = -1, 897 .cmd_per_lun = 32, 898 .max_sectors = 0xffff, 899 .queuecommand = qedf_queuecommand, 900 .shost_attrs = qedf_host_attrs, 901 .eh_abort_handler = qedf_eh_abort, 902 .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */ 903 .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */ 904 .eh_host_reset_handler = qedf_eh_host_reset, 905 .slave_configure = qedf_slave_configure, 906 .dma_boundary = QED_HW_DMA_BOUNDARY, 907 .sg_tablesize = QEDF_MAX_BDS_PER_CMD, 908 .can_queue = FCOE_PARAMS_NUM_TASKS, 909 .change_queue_depth = scsi_change_queue_depth, 910 }; 911 912 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen) 913 { 914 int rc; 915 916 spin_lock(&qedf_global_lock); 917 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global); 918 spin_unlock(&qedf_global_lock); 919 920 return rc; 921 } 922 923 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id) 924 { 925 struct qedf_rport *fcport; 926 struct fc_rport_priv *rdata; 927 928 rcu_read_lock(); 929 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 930 rdata = fcport->rdata; 931 if (rdata == NULL) 932 continue; 933 if (rdata->ids.port_id == port_id) { 934 rcu_read_unlock(); 935 return fcport; 936 } 937 } 938 rcu_read_unlock(); 939 940 /* Return NULL to caller to let them know fcport was not found */ 941 return NULL; 942 } 943 944 /* Transmits an ELS frame over an offloaded session */ 945 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp) 946 { 947 struct fc_frame_header *fh; 948 int rc = 0; 949 950 fh = fc_frame_header_get(fp); 951 if ((fh->fh_type == FC_TYPE_ELS) && 952 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 953 switch (fc_frame_payload_op(fp)) { 954 case ELS_ADISC: 955 qedf_send_adisc(fcport, fp); 956 rc = 1; 957 break; 958 } 959 } 960 961 return rc; 962 } 963 964 /** 965 * qedf_xmit - qedf FCoE frame transmit function 966 * 967 */ 968 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp) 969 { 970 struct fc_lport *base_lport; 971 struct qedf_ctx *qedf; 972 struct ethhdr *eh; 973 struct fcoe_crc_eof *cp; 974 struct sk_buff *skb; 975 struct fc_frame_header *fh; 976 struct fcoe_hdr *hp; 977 u8 sof, eof; 978 u32 crc; 979 unsigned int hlen, tlen, elen; 980 int wlen; 981 struct fc_stats *stats; 982 struct fc_lport *tmp_lport; 983 struct fc_lport *vn_port = NULL; 984 struct qedf_rport *fcport; 985 int rc; 986 u16 vlan_tci = 0; 987 988 qedf = (struct qedf_ctx *)lport_priv(lport); 989 990 fh = fc_frame_header_get(fp); 991 skb = fp_skb(fp); 992 993 /* Filter out traffic to other NPIV ports on the same host */ 994 if (lport->vport) 995 base_lport = shost_priv(vport_to_shost(lport->vport)); 996 else 997 base_lport = lport; 998 999 /* Flag if the destination is the base port */ 1000 if (base_lport->port_id == ntoh24(fh->fh_d_id)) { 1001 vn_port = base_lport; 1002 } else { 1003 /* Got through the list of vports attached to the base_lport 1004 * and see if we have a match with the destination address. 1005 */ 1006 list_for_each_entry(tmp_lport, &base_lport->vports, list) { 1007 if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) { 1008 vn_port = tmp_lport; 1009 break; 1010 } 1011 } 1012 } 1013 if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) { 1014 struct fc_rport_priv *rdata = NULL; 1015 1016 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 1017 "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id)); 1018 kfree_skb(skb); 1019 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id)); 1020 if (rdata) { 1021 rdata->retries = lport->max_rport_retry_count; 1022 kref_put(&rdata->kref, fc_rport_destroy); 1023 } 1024 return -EINVAL; 1025 } 1026 /* End NPIV filtering */ 1027 1028 if (!qedf->ctlr.sel_fcf) { 1029 kfree_skb(skb); 1030 return 0; 1031 } 1032 1033 if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) { 1034 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n"); 1035 kfree_skb(skb); 1036 return 0; 1037 } 1038 1039 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 1040 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n"); 1041 kfree_skb(skb); 1042 return 0; 1043 } 1044 1045 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 1046 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb)) 1047 return 0; 1048 } 1049 1050 /* Check to see if this needs to be sent on an offloaded session */ 1051 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 1052 1053 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1054 rc = qedf_xmit_l2_frame(fcport, fp); 1055 /* 1056 * If the frame was successfully sent over the middle path 1057 * then do not try to also send it over the LL2 path 1058 */ 1059 if (rc) 1060 return 0; 1061 } 1062 1063 sof = fr_sof(fp); 1064 eof = fr_eof(fp); 1065 1066 elen = sizeof(struct ethhdr); 1067 hlen = sizeof(struct fcoe_hdr); 1068 tlen = sizeof(struct fcoe_crc_eof); 1069 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; 1070 1071 skb->ip_summed = CHECKSUM_NONE; 1072 crc = fcoe_fc_crc(fp); 1073 1074 /* copy port crc and eof to the skb buff */ 1075 if (skb_is_nonlinear(skb)) { 1076 skb_frag_t *frag; 1077 1078 if (qedf_get_paged_crc_eof(skb, tlen)) { 1079 kfree_skb(skb); 1080 return -ENOMEM; 1081 } 1082 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; 1083 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset; 1084 } else { 1085 cp = skb_put(skb, tlen); 1086 } 1087 1088 memset(cp, 0, sizeof(*cp)); 1089 cp->fcoe_eof = eof; 1090 cp->fcoe_crc32 = cpu_to_le32(~crc); 1091 if (skb_is_nonlinear(skb)) { 1092 kunmap_atomic(cp); 1093 cp = NULL; 1094 } 1095 1096 1097 /* adjust skb network/transport offsets to match mac/fcoe/port */ 1098 skb_push(skb, elen + hlen); 1099 skb_reset_mac_header(skb); 1100 skb_reset_network_header(skb); 1101 skb->mac_len = elen; 1102 skb->protocol = htons(ETH_P_FCOE); 1103 1104 /* 1105 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN 1106 * for FIP/FCoE traffic. 1107 */ 1108 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id); 1109 1110 /* fill up mac and fcoe headers */ 1111 eh = eth_hdr(skb); 1112 eh->h_proto = htons(ETH_P_FCOE); 1113 if (qedf->ctlr.map_dest) 1114 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); 1115 else 1116 /* insert GW address */ 1117 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr); 1118 1119 /* Set the source MAC address */ 1120 ether_addr_copy(eh->h_source, qedf->data_src_addr); 1121 1122 hp = (struct fcoe_hdr *)(eh + 1); 1123 memset(hp, 0, sizeof(*hp)); 1124 if (FC_FCOE_VER) 1125 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); 1126 hp->fcoe_sof = sof; 1127 1128 /*update tx stats */ 1129 stats = per_cpu_ptr(lport->stats, get_cpu()); 1130 stats->TxFrames++; 1131 stats->TxWords += wlen; 1132 put_cpu(); 1133 1134 /* Get VLAN ID from skb for printing purposes */ 1135 __vlan_hwaccel_get_tag(skb, &vlan_tci); 1136 1137 /* send down to lld */ 1138 fr_dev(fp) = lport; 1139 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: " 1140 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n", 1141 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type, 1142 vlan_tci); 1143 if (qedf_dump_frames) 1144 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 1145 1, skb->data, skb->len, false); 1146 rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0); 1147 if (rc) { 1148 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc); 1149 kfree_skb(skb); 1150 return rc; 1151 } 1152 1153 return 0; 1154 } 1155 1156 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1157 { 1158 int rval = 0; 1159 u32 *pbl; 1160 dma_addr_t page; 1161 int num_pages; 1162 1163 /* Calculate appropriate queue and PBL sizes */ 1164 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 1165 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE); 1166 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) * 1167 sizeof(void *); 1168 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE; 1169 1170 fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1171 &fcport->sq_dma, GFP_KERNEL); 1172 if (!fcport->sq) { 1173 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n"); 1174 rval = 1; 1175 goto out; 1176 } 1177 1178 fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 1179 fcport->sq_pbl_size, 1180 &fcport->sq_pbl_dma, GFP_KERNEL); 1181 if (!fcport->sq_pbl) { 1182 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n"); 1183 rval = 1; 1184 goto out_free_sq; 1185 } 1186 1187 /* Create PBL */ 1188 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE; 1189 page = fcport->sq_dma; 1190 pbl = (u32 *)fcport->sq_pbl; 1191 1192 while (num_pages--) { 1193 *pbl = U64_LO(page); 1194 pbl++; 1195 *pbl = U64_HI(page); 1196 pbl++; 1197 page += QEDF_PAGE_SIZE; 1198 } 1199 1200 return rval; 1201 1202 out_free_sq: 1203 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq, 1204 fcport->sq_dma); 1205 out: 1206 return rval; 1207 } 1208 1209 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1210 { 1211 if (fcport->sq_pbl) 1212 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size, 1213 fcport->sq_pbl, fcport->sq_pbl_dma); 1214 if (fcport->sq) 1215 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1216 fcport->sq, fcport->sq_dma); 1217 } 1218 1219 static int qedf_offload_connection(struct qedf_ctx *qedf, 1220 struct qedf_rport *fcport) 1221 { 1222 struct qed_fcoe_params_offload conn_info; 1223 u32 port_id; 1224 int rval; 1225 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe)); 1226 1227 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection " 1228 "portid=%06x.\n", fcport->rdata->ids.port_id); 1229 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle, 1230 &fcport->fw_cid, &fcport->p_doorbell); 1231 if (rval) { 1232 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection " 1233 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1234 rval = 1; /* For some reason qed returns 0 on failure here */ 1235 goto out; 1236 } 1237 1238 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x " 1239 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id, 1240 fcport->fw_cid, fcport->handle); 1241 1242 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload)); 1243 1244 /* Fill in the offload connection info */ 1245 conn_info.sq_pbl_addr = fcport->sq_pbl_dma; 1246 1247 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl); 1248 conn_info.sq_next_page_addr = 1249 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8)); 1250 1251 /* Need to use our FCoE MAC for the offload session */ 1252 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr); 1253 1254 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr); 1255 1256 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size; 1257 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20; 1258 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */ 1259 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size; 1260 1261 /* Set VLAN data */ 1262 conn_info.vlan_tag = qedf->vlan_id << 1263 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT; 1264 conn_info.vlan_tag |= 1265 qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT; 1266 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK << 1267 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT); 1268 1269 /* Set host port source id */ 1270 port_id = fc_host_port_id(qedf->lport->host); 1271 fcport->sid = port_id; 1272 conn_info.s_id.addr_hi = (port_id & 0x000000FF); 1273 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1274 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1275 1276 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq; 1277 1278 /* Set remote port destination id */ 1279 port_id = fcport->rdata->rport->port_id; 1280 conn_info.d_id.addr_hi = (port_id & 0x000000FF); 1281 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1282 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1283 1284 conn_info.def_q_idx = 0; /* Default index for send queue? */ 1285 1286 /* Set FC-TAPE specific flags if needed */ 1287 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) { 1288 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, 1289 "Enable CONF, REC for portid=%06x.\n", 1290 fcport->rdata->ids.port_id); 1291 conn_info.flags |= 1 << 1292 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT; 1293 conn_info.flags |= 1294 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) << 1295 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT; 1296 } 1297 1298 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info); 1299 if (rval) { 1300 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection " 1301 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1302 goto out_free_conn; 1303 } else 1304 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload " 1305 "succeeded portid=%06x total_sqe=%d.\n", 1306 fcport->rdata->ids.port_id, total_sqe); 1307 1308 spin_lock_init(&fcport->rport_lock); 1309 atomic_set(&fcport->free_sqes, total_sqe); 1310 return 0; 1311 out_free_conn: 1312 qed_ops->release_conn(qedf->cdev, fcport->handle); 1313 out: 1314 return rval; 1315 } 1316 1317 #define QEDF_TERM_BUFF_SIZE 10 1318 static void qedf_upload_connection(struct qedf_ctx *qedf, 1319 struct qedf_rport *fcport) 1320 { 1321 void *term_params; 1322 dma_addr_t term_params_dma; 1323 1324 /* Term params needs to be a DMA coherent buffer as qed shared the 1325 * physical DMA address with the firmware. The buffer may be used in 1326 * the receive path so we may eventually have to move this. 1327 */ 1328 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, 1329 &term_params_dma, GFP_KERNEL); 1330 1331 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection " 1332 "port_id=%06x.\n", fcport->rdata->ids.port_id); 1333 1334 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma); 1335 qed_ops->release_conn(qedf->cdev, fcport->handle); 1336 1337 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params, 1338 term_params_dma); 1339 } 1340 1341 static void qedf_cleanup_fcport(struct qedf_ctx *qedf, 1342 struct qedf_rport *fcport) 1343 { 1344 struct fc_rport_priv *rdata = fcport->rdata; 1345 1346 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n", 1347 fcport->rdata->ids.port_id); 1348 1349 /* Flush any remaining i/o's before we upload the connection */ 1350 qedf_flush_active_ios(fcport, -1); 1351 1352 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) 1353 qedf_upload_connection(qedf, fcport); 1354 qedf_free_sq(qedf, fcport); 1355 fcport->rdata = NULL; 1356 fcport->qedf = NULL; 1357 kref_put(&rdata->kref, fc_rport_destroy); 1358 } 1359 1360 /** 1361 * This event_callback is called after successful completion of libfc 1362 * initiated target login. qedf can proceed with initiating the session 1363 * establishment. 1364 */ 1365 static void qedf_rport_event_handler(struct fc_lport *lport, 1366 struct fc_rport_priv *rdata, 1367 enum fc_rport_event event) 1368 { 1369 struct qedf_ctx *qedf = lport_priv(lport); 1370 struct fc_rport *rport = rdata->rport; 1371 struct fc_rport_libfc_priv *rp; 1372 struct qedf_rport *fcport; 1373 u32 port_id; 1374 int rval; 1375 unsigned long flags; 1376 1377 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, " 1378 "port_id = 0x%x\n", event, rdata->ids.port_id); 1379 1380 switch (event) { 1381 case RPORT_EV_READY: 1382 if (!rport) { 1383 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n"); 1384 break; 1385 } 1386 1387 rp = rport->dd_data; 1388 fcport = (struct qedf_rport *)&rp[1]; 1389 fcport->qedf = qedf; 1390 1391 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) { 1392 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading " 1393 "portid=0x%x as max number of offloaded sessions " 1394 "reached.\n", rdata->ids.port_id); 1395 return; 1396 } 1397 1398 /* 1399 * Don't try to offload the session again. Can happen when we 1400 * get an ADISC 1401 */ 1402 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1403 QEDF_WARN(&(qedf->dbg_ctx), "Session already " 1404 "offloaded, portid=0x%x.\n", 1405 rdata->ids.port_id); 1406 return; 1407 } 1408 1409 if (rport->port_id == FC_FID_DIR_SERV) { 1410 /* 1411 * qedf_rport structure doesn't exist for 1412 * directory server. 1413 * We should not come here, as lport will 1414 * take care of fabric login 1415 */ 1416 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not " 1417 "exist for dir server port_id=%x\n", 1418 rdata->ids.port_id); 1419 break; 1420 } 1421 1422 if (rdata->spp_type != FC_TYPE_FCP) { 1423 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1424 "Not offloading since spp type isn't FCP\n"); 1425 break; 1426 } 1427 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1428 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1429 "Not FCP target so not offloading\n"); 1430 break; 1431 } 1432 1433 /* Initial reference held on entry, so this can't fail */ 1434 kref_get(&rdata->kref); 1435 fcport->rdata = rdata; 1436 fcport->rport = rport; 1437 1438 rval = qedf_alloc_sq(qedf, fcport); 1439 if (rval) { 1440 qedf_cleanup_fcport(qedf, fcport); 1441 break; 1442 } 1443 1444 /* Set device type */ 1445 if (rdata->flags & FC_RP_FLAGS_RETRY && 1446 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET && 1447 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) { 1448 fcport->dev_type = QEDF_RPORT_TYPE_TAPE; 1449 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1450 "portid=%06x is a TAPE device.\n", 1451 rdata->ids.port_id); 1452 } else { 1453 fcport->dev_type = QEDF_RPORT_TYPE_DISK; 1454 } 1455 1456 rval = qedf_offload_connection(qedf, fcport); 1457 if (rval) { 1458 qedf_cleanup_fcport(qedf, fcport); 1459 break; 1460 } 1461 1462 /* Add fcport to list of qedf_ctx list of offloaded ports */ 1463 spin_lock_irqsave(&qedf->hba_lock, flags); 1464 list_add_rcu(&fcport->peers, &qedf->fcports); 1465 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1466 1467 /* 1468 * Set the session ready bit to let everyone know that this 1469 * connection is ready for I/O 1470 */ 1471 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags); 1472 atomic_inc(&qedf->num_offloads); 1473 1474 break; 1475 case RPORT_EV_LOGO: 1476 case RPORT_EV_FAILED: 1477 case RPORT_EV_STOP: 1478 port_id = rdata->ids.port_id; 1479 if (port_id == FC_FID_DIR_SERV) 1480 break; 1481 1482 if (!rport) { 1483 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1484 "port_id=%x - rport notcreated Yet!!\n", port_id); 1485 break; 1486 } 1487 rp = rport->dd_data; 1488 /* 1489 * Perform session upload. Note that rdata->peers is already 1490 * removed from disc->rports list before we get this event. 1491 */ 1492 fcport = (struct qedf_rport *)&rp[1]; 1493 1494 spin_lock_irqsave(&fcport->rport_lock, flags); 1495 /* Only free this fcport if it is offloaded already */ 1496 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) && 1497 !test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1498 &fcport->flags)) { 1499 set_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1500 &fcport->flags); 1501 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1502 qedf_cleanup_fcport(qedf, fcport); 1503 /* 1504 * Remove fcport to list of qedf_ctx list of offloaded 1505 * ports 1506 */ 1507 spin_lock_irqsave(&qedf->hba_lock, flags); 1508 list_del_rcu(&fcport->peers); 1509 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1510 1511 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1512 &fcport->flags); 1513 atomic_dec(&qedf->num_offloads); 1514 } else { 1515 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1516 } 1517 break; 1518 1519 case RPORT_EV_NONE: 1520 break; 1521 } 1522 } 1523 1524 static void qedf_abort_io(struct fc_lport *lport) 1525 { 1526 /* NO-OP but need to fill in the template */ 1527 } 1528 1529 static void qedf_fcp_cleanup(struct fc_lport *lport) 1530 { 1531 /* 1532 * NO-OP but need to fill in template to prevent a NULL 1533 * function pointer dereference during link down. I/Os 1534 * will be flushed when port is uploaded. 1535 */ 1536 } 1537 1538 static struct libfc_function_template qedf_lport_template = { 1539 .frame_send = qedf_xmit, 1540 .fcp_abort_io = qedf_abort_io, 1541 .fcp_cleanup = qedf_fcp_cleanup, 1542 .rport_event_callback = qedf_rport_event_handler, 1543 .elsct_send = qedf_elsct_send, 1544 }; 1545 1546 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf) 1547 { 1548 fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO); 1549 1550 qedf->ctlr.send = qedf_fip_send; 1551 qedf->ctlr.get_src_addr = qedf_get_src_mac; 1552 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac); 1553 } 1554 1555 static void qedf_setup_fdmi(struct qedf_ctx *qedf) 1556 { 1557 struct fc_lport *lport = qedf->lport; 1558 struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host); 1559 u8 buf[8]; 1560 int i, pos; 1561 1562 /* 1563 * fdmi_enabled needs to be set for libfc to execute FDMI registration. 1564 */ 1565 lport->fdmi_enabled = 1; 1566 1567 /* 1568 * Setup the necessary fc_host attributes to that will be used to fill 1569 * in the FDMI information. 1570 */ 1571 1572 /* Get the PCI-e Device Serial Number Capability */ 1573 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN); 1574 if (pos) { 1575 pos += 4; 1576 for (i = 0; i < 8; i++) 1577 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]); 1578 1579 snprintf(fc_host->serial_number, 1580 sizeof(fc_host->serial_number), 1581 "%02X%02X%02X%02X%02X%02X%02X%02X", 1582 buf[7], buf[6], buf[5], buf[4], 1583 buf[3], buf[2], buf[1], buf[0]); 1584 } else 1585 snprintf(fc_host->serial_number, 1586 sizeof(fc_host->serial_number), "Unknown"); 1587 1588 snprintf(fc_host->manufacturer, 1589 sizeof(fc_host->manufacturer), "%s", "Cavium Inc."); 1590 1591 snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000"); 1592 1593 snprintf(fc_host->model_description, sizeof(fc_host->model_description), 1594 "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller" 1595 "(FCoE)"); 1596 1597 snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version), 1598 "Rev %d", qedf->pdev->revision); 1599 1600 snprintf(fc_host->driver_version, sizeof(fc_host->driver_version), 1601 "%s", QEDF_VERSION); 1602 1603 snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version), 1604 "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION, 1605 FW_REVISION_VERSION, FW_ENGINEERING_VERSION); 1606 } 1607 1608 static int qedf_lport_setup(struct qedf_ctx *qedf) 1609 { 1610 struct fc_lport *lport = qedf->lport; 1611 1612 lport->link_up = 0; 1613 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1614 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1615 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1616 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1617 lport->boot_time = jiffies; 1618 lport->e_d_tov = 2 * 1000; 1619 lport->r_a_tov = 10 * 1000; 1620 1621 /* Set NPIV support */ 1622 lport->does_npiv = 1; 1623 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV; 1624 1625 fc_set_wwnn(lport, qedf->wwnn); 1626 fc_set_wwpn(lport, qedf->wwpn); 1627 1628 if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) { 1629 QEDF_ERR(&qedf->dbg_ctx, 1630 "fcoe_libfc_config failed.\n"); 1631 return -ENOMEM; 1632 } 1633 1634 /* Allocate the exchange manager */ 1635 fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS, 1636 0xfffe, NULL); 1637 1638 if (fc_lport_init_stats(lport)) 1639 return -ENOMEM; 1640 1641 /* Finish lport config */ 1642 fc_lport_config(lport); 1643 1644 /* Set max frame size */ 1645 fc_set_mfs(lport, QEDF_MFS); 1646 fc_host_maxframe_size(lport->host) = lport->mfs; 1647 1648 /* Set default dev_loss_tmo based on module parameter */ 1649 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo; 1650 1651 /* Set symbolic node name */ 1652 snprintf(fc_host_symbolic_name(lport->host), 256, 1653 "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION); 1654 1655 qedf_setup_fdmi(qedf); 1656 1657 return 0; 1658 } 1659 1660 /* 1661 * NPIV functions 1662 */ 1663 1664 static int qedf_vport_libfc_config(struct fc_vport *vport, 1665 struct fc_lport *lport) 1666 { 1667 lport->link_up = 0; 1668 lport->qfull = 0; 1669 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1670 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1671 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1672 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1673 lport->boot_time = jiffies; 1674 lport->e_d_tov = 2 * 1000; 1675 lport->r_a_tov = 10 * 1000; 1676 lport->does_npiv = 1; /* Temporary until we add NPIV support */ 1677 1678 /* Allocate stats for vport */ 1679 if (fc_lport_init_stats(lport)) 1680 return -ENOMEM; 1681 1682 /* Finish lport config */ 1683 fc_lport_config(lport); 1684 1685 /* offload related configuration */ 1686 lport->crc_offload = 0; 1687 lport->seq_offload = 0; 1688 lport->lro_enabled = 0; 1689 lport->lro_xid = 0; 1690 lport->lso_max = 0; 1691 1692 return 0; 1693 } 1694 1695 static int qedf_vport_create(struct fc_vport *vport, bool disabled) 1696 { 1697 struct Scsi_Host *shost = vport_to_shost(vport); 1698 struct fc_lport *n_port = shost_priv(shost); 1699 struct fc_lport *vn_port; 1700 struct qedf_ctx *base_qedf = lport_priv(n_port); 1701 struct qedf_ctx *vport_qedf; 1702 1703 char buf[32]; 1704 int rc = 0; 1705 1706 rc = fcoe_validate_vport_create(vport); 1707 if (rc) { 1708 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1709 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, " 1710 "WWPN (0x%s) already exists.\n", buf); 1711 goto err1; 1712 } 1713 1714 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) { 1715 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport " 1716 "because link is not up.\n"); 1717 rc = -EIO; 1718 goto err1; 1719 } 1720 1721 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx)); 1722 if (!vn_port) { 1723 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport " 1724 "for vport.\n"); 1725 rc = -ENOMEM; 1726 goto err1; 1727 } 1728 1729 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1730 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n", 1731 buf); 1732 1733 /* Copy some fields from base_qedf */ 1734 vport_qedf = lport_priv(vn_port); 1735 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx)); 1736 1737 /* Set qedf data specific to this vport */ 1738 vport_qedf->lport = vn_port; 1739 /* Use same hba_lock as base_qedf */ 1740 vport_qedf->hba_lock = base_qedf->hba_lock; 1741 vport_qedf->pdev = base_qedf->pdev; 1742 vport_qedf->cmd_mgr = base_qedf->cmd_mgr; 1743 init_completion(&vport_qedf->flogi_compl); 1744 INIT_LIST_HEAD(&vport_qedf->fcports); 1745 1746 rc = qedf_vport_libfc_config(vport, vn_port); 1747 if (rc) { 1748 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory " 1749 "for lport stats.\n"); 1750 goto err2; 1751 } 1752 1753 fc_set_wwnn(vn_port, vport->node_name); 1754 fc_set_wwpn(vn_port, vport->port_name); 1755 vport_qedf->wwnn = vn_port->wwnn; 1756 vport_qedf->wwpn = vn_port->wwpn; 1757 1758 vn_port->host->transportt = qedf_fc_vport_transport_template; 1759 vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS; 1760 vn_port->host->max_lun = qedf_max_lun; 1761 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD; 1762 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN; 1763 1764 rc = scsi_add_host(vn_port->host, &vport->dev); 1765 if (rc) { 1766 QEDF_WARN(&base_qedf->dbg_ctx, 1767 "Error adding Scsi_Host rc=0x%x.\n", rc); 1768 goto err2; 1769 } 1770 1771 /* Set default dev_loss_tmo based on module parameter */ 1772 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo; 1773 1774 /* Init libfc stuffs */ 1775 memcpy(&vn_port->tt, &qedf_lport_template, 1776 sizeof(qedf_lport_template)); 1777 fc_exch_init(vn_port); 1778 fc_elsct_init(vn_port); 1779 fc_lport_init(vn_port); 1780 fc_disc_init(vn_port); 1781 fc_disc_config(vn_port, vn_port); 1782 1783 1784 /* Allocate the exchange manager */ 1785 shost = vport_to_shost(vport); 1786 n_port = shost_priv(shost); 1787 fc_exch_mgr_list_clone(n_port, vn_port); 1788 1789 /* Set max frame size */ 1790 fc_set_mfs(vn_port, QEDF_MFS); 1791 1792 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN; 1793 1794 if (disabled) { 1795 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1796 } else { 1797 vn_port->boot_time = jiffies; 1798 fc_fabric_login(vn_port); 1799 fc_vport_setlink(vn_port); 1800 } 1801 1802 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n", 1803 vn_port); 1804 1805 /* Set up debug context for vport */ 1806 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no; 1807 vport_qedf->dbg_ctx.pdev = base_qedf->pdev; 1808 1809 err2: 1810 scsi_host_put(vn_port->host); 1811 err1: 1812 return rc; 1813 } 1814 1815 static int qedf_vport_destroy(struct fc_vport *vport) 1816 { 1817 struct Scsi_Host *shost = vport_to_shost(vport); 1818 struct fc_lport *n_port = shost_priv(shost); 1819 struct fc_lport *vn_port = vport->dd_data; 1820 struct qedf_ctx *qedf = lport_priv(vn_port); 1821 1822 if (!qedf) { 1823 QEDF_ERR(NULL, "qedf is NULL.\n"); 1824 goto out; 1825 } 1826 1827 /* Set unloading bit on vport qedf_ctx to prevent more I/O */ 1828 set_bit(QEDF_UNLOADING, &qedf->flags); 1829 1830 mutex_lock(&n_port->lp_mutex); 1831 list_del(&vn_port->list); 1832 mutex_unlock(&n_port->lp_mutex); 1833 1834 fc_fabric_logoff(vn_port); 1835 fc_lport_destroy(vn_port); 1836 1837 /* Detach from scsi-ml */ 1838 fc_remove_host(vn_port->host); 1839 scsi_remove_host(vn_port->host); 1840 1841 /* 1842 * Only try to release the exchange manager if the vn_port 1843 * configuration is complete. 1844 */ 1845 if (vn_port->state == LPORT_ST_READY) 1846 fc_exch_mgr_free(vn_port); 1847 1848 /* Free memory used by statistical counters */ 1849 fc_lport_free_stats(vn_port); 1850 1851 /* Release Scsi_Host */ 1852 if (vn_port->host) 1853 scsi_host_put(vn_port->host); 1854 1855 out: 1856 return 0; 1857 } 1858 1859 static int qedf_vport_disable(struct fc_vport *vport, bool disable) 1860 { 1861 struct fc_lport *lport = vport->dd_data; 1862 1863 if (disable) { 1864 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1865 fc_fabric_logoff(lport); 1866 } else { 1867 lport->boot_time = jiffies; 1868 fc_fabric_login(lport); 1869 fc_vport_setlink(lport); 1870 } 1871 return 0; 1872 } 1873 1874 /* 1875 * During removal we need to wait for all the vports associated with a port 1876 * to be destroyed so we avoid a race condition where libfc is still trying 1877 * to reap vports while the driver remove function has already reaped the 1878 * driver contexts associated with the physical port. 1879 */ 1880 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf) 1881 { 1882 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host); 1883 1884 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 1885 "Entered.\n"); 1886 while (fc_host->npiv_vports_inuse > 0) { 1887 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 1888 "Waiting for all vports to be reaped.\n"); 1889 msleep(1000); 1890 } 1891 } 1892 1893 /** 1894 * qedf_fcoe_reset - Resets the fcoe 1895 * 1896 * @shost: shost the reset is from 1897 * 1898 * Returns: always 0 1899 */ 1900 static int qedf_fcoe_reset(struct Scsi_Host *shost) 1901 { 1902 struct fc_lport *lport = shost_priv(shost); 1903 1904 qedf_ctx_soft_reset(lport); 1905 return 0; 1906 } 1907 1908 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host 1909 *shost) 1910 { 1911 struct fc_host_statistics *qedf_stats; 1912 struct fc_lport *lport = shost_priv(shost); 1913 struct qedf_ctx *qedf = lport_priv(lport); 1914 struct qed_fcoe_stats *fw_fcoe_stats; 1915 1916 qedf_stats = fc_get_host_stats(shost); 1917 1918 /* We don't collect offload stats for specific NPIV ports */ 1919 if (lport->vport) 1920 goto out; 1921 1922 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL); 1923 if (!fw_fcoe_stats) { 1924 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for " 1925 "fw_fcoe_stats.\n"); 1926 goto out; 1927 } 1928 1929 mutex_lock(&qedf->stats_mutex); 1930 1931 /* Query firmware for offload stats */ 1932 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats); 1933 1934 /* 1935 * The expectation is that we add our offload stats to the stats 1936 * being maintained by libfc each time the fc_get_host_status callback 1937 * is invoked. The additions are not carried over for each call to 1938 * the fc_get_host_stats callback. 1939 */ 1940 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt + 1941 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt + 1942 fw_fcoe_stats->fcoe_tx_other_pkt_cnt; 1943 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt + 1944 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt + 1945 fw_fcoe_stats->fcoe_rx_other_pkt_cnt; 1946 qedf_stats->fcp_input_megabytes += 1947 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000); 1948 qedf_stats->fcp_output_megabytes += 1949 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000); 1950 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4; 1951 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4; 1952 qedf_stats->invalid_crc_count += 1953 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt; 1954 qedf_stats->dumped_frames = 1955 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 1956 qedf_stats->error_frames += 1957 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 1958 qedf_stats->fcp_input_requests += qedf->input_requests; 1959 qedf_stats->fcp_output_requests += qedf->output_requests; 1960 qedf_stats->fcp_control_requests += qedf->control_requests; 1961 qedf_stats->fcp_packet_aborts += qedf->packet_aborts; 1962 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures; 1963 1964 mutex_unlock(&qedf->stats_mutex); 1965 kfree(fw_fcoe_stats); 1966 out: 1967 return qedf_stats; 1968 } 1969 1970 static struct fc_function_template qedf_fc_transport_fn = { 1971 .show_host_node_name = 1, 1972 .show_host_port_name = 1, 1973 .show_host_supported_classes = 1, 1974 .show_host_supported_fc4s = 1, 1975 .show_host_active_fc4s = 1, 1976 .show_host_maxframe_size = 1, 1977 1978 .show_host_port_id = 1, 1979 .show_host_supported_speeds = 1, 1980 .get_host_speed = fc_get_host_speed, 1981 .show_host_speed = 1, 1982 .show_host_port_type = 1, 1983 .get_host_port_state = fc_get_host_port_state, 1984 .show_host_port_state = 1, 1985 .show_host_symbolic_name = 1, 1986 1987 /* 1988 * Tell FC transport to allocate enough space to store the backpointer 1989 * for the associate qedf_rport struct. 1990 */ 1991 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 1992 sizeof(struct qedf_rport)), 1993 .show_rport_maxframe_size = 1, 1994 .show_rport_supported_classes = 1, 1995 .show_host_fabric_name = 1, 1996 .show_starget_node_name = 1, 1997 .show_starget_port_name = 1, 1998 .show_starget_port_id = 1, 1999 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2000 .show_rport_dev_loss_tmo = 1, 2001 .get_fc_host_stats = qedf_fc_get_host_stats, 2002 .issue_fc_host_lip = qedf_fcoe_reset, 2003 .vport_create = qedf_vport_create, 2004 .vport_delete = qedf_vport_destroy, 2005 .vport_disable = qedf_vport_disable, 2006 .bsg_request = fc_lport_bsg_request, 2007 }; 2008 2009 static struct fc_function_template qedf_fc_vport_transport_fn = { 2010 .show_host_node_name = 1, 2011 .show_host_port_name = 1, 2012 .show_host_supported_classes = 1, 2013 .show_host_supported_fc4s = 1, 2014 .show_host_active_fc4s = 1, 2015 .show_host_maxframe_size = 1, 2016 .show_host_port_id = 1, 2017 .show_host_supported_speeds = 1, 2018 .get_host_speed = fc_get_host_speed, 2019 .show_host_speed = 1, 2020 .show_host_port_type = 1, 2021 .get_host_port_state = fc_get_host_port_state, 2022 .show_host_port_state = 1, 2023 .show_host_symbolic_name = 1, 2024 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2025 sizeof(struct qedf_rport)), 2026 .show_rport_maxframe_size = 1, 2027 .show_rport_supported_classes = 1, 2028 .show_host_fabric_name = 1, 2029 .show_starget_node_name = 1, 2030 .show_starget_port_name = 1, 2031 .show_starget_port_id = 1, 2032 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2033 .show_rport_dev_loss_tmo = 1, 2034 .get_fc_host_stats = fc_get_host_stats, 2035 .issue_fc_host_lip = qedf_fcoe_reset, 2036 .bsg_request = fc_lport_bsg_request, 2037 }; 2038 2039 static bool qedf_fp_has_work(struct qedf_fastpath *fp) 2040 { 2041 struct qedf_ctx *qedf = fp->qedf; 2042 struct global_queue *que; 2043 struct qed_sb_info *sb_info = fp->sb_info; 2044 struct status_block_e4 *sb = sb_info->sb_virt; 2045 u16 prod_idx; 2046 2047 /* Get the pointer to the global CQ this completion is on */ 2048 que = qedf->global_queues[fp->sb_id]; 2049 2050 /* Be sure all responses have been written to PI */ 2051 rmb(); 2052 2053 /* Get the current firmware producer index */ 2054 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2055 2056 return (que->cq_prod_idx != prod_idx); 2057 } 2058 2059 /* 2060 * Interrupt handler code. 2061 */ 2062 2063 /* Process completion queue and copy CQE contents for deferred processesing 2064 * 2065 * Return true if we should wake the I/O thread, false if not. 2066 */ 2067 static bool qedf_process_completions(struct qedf_fastpath *fp) 2068 { 2069 struct qedf_ctx *qedf = fp->qedf; 2070 struct qed_sb_info *sb_info = fp->sb_info; 2071 struct status_block_e4 *sb = sb_info->sb_virt; 2072 struct global_queue *que; 2073 u16 prod_idx; 2074 struct fcoe_cqe *cqe; 2075 struct qedf_io_work *io_work; 2076 int num_handled = 0; 2077 unsigned int cpu; 2078 struct qedf_ioreq *io_req = NULL; 2079 u16 xid; 2080 u16 new_cqes; 2081 u32 comp_type; 2082 2083 /* Get the current firmware producer index */ 2084 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2085 2086 /* Get the pointer to the global CQ this completion is on */ 2087 que = qedf->global_queues[fp->sb_id]; 2088 2089 /* Calculate the amount of new elements since last processing */ 2090 new_cqes = (prod_idx >= que->cq_prod_idx) ? 2091 (prod_idx - que->cq_prod_idx) : 2092 0x10000 - que->cq_prod_idx + prod_idx; 2093 2094 /* Save producer index */ 2095 que->cq_prod_idx = prod_idx; 2096 2097 while (new_cqes) { 2098 fp->completions++; 2099 num_handled++; 2100 cqe = &que->cq[que->cq_cons_idx]; 2101 2102 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2103 FCOE_CQE_CQE_TYPE_MASK; 2104 2105 /* 2106 * Process unsolicited CQEs directly in the interrupt handler 2107 * sine we need the fastpath ID 2108 */ 2109 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) { 2110 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL, 2111 "Unsolicated CQE.\n"); 2112 qedf_process_unsol_compl(qedf, fp->sb_id, cqe); 2113 /* 2114 * Don't add a work list item. Increment consumer 2115 * consumer index and move on. 2116 */ 2117 goto inc_idx; 2118 } 2119 2120 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2121 io_req = &qedf->cmd_mgr->cmds[xid]; 2122 2123 /* 2124 * Figure out which percpu thread we should queue this I/O 2125 * on. 2126 */ 2127 if (!io_req) 2128 /* If there is not io_req assocated with this CQE 2129 * just queue it on CPU 0 2130 */ 2131 cpu = 0; 2132 else { 2133 cpu = io_req->cpu; 2134 io_req->int_cpu = smp_processor_id(); 2135 } 2136 2137 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC); 2138 if (!io_work) { 2139 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate " 2140 "work for I/O completion.\n"); 2141 continue; 2142 } 2143 memset(io_work, 0, sizeof(struct qedf_io_work)); 2144 2145 INIT_WORK(&io_work->work, qedf_fp_io_handler); 2146 2147 /* Copy contents of CQE for deferred processing */ 2148 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe)); 2149 2150 io_work->qedf = fp->qedf; 2151 io_work->fp = NULL; /* Only used for unsolicited frames */ 2152 2153 queue_work_on(cpu, qedf_io_wq, &io_work->work); 2154 2155 inc_idx: 2156 que->cq_cons_idx++; 2157 if (que->cq_cons_idx == fp->cq_num_entries) 2158 que->cq_cons_idx = 0; 2159 new_cqes--; 2160 } 2161 2162 return true; 2163 } 2164 2165 2166 /* MSI-X fastpath handler code */ 2167 static irqreturn_t qedf_msix_handler(int irq, void *dev_id) 2168 { 2169 struct qedf_fastpath *fp = dev_id; 2170 2171 if (!fp) { 2172 QEDF_ERR(NULL, "fp is null.\n"); 2173 return IRQ_HANDLED; 2174 } 2175 if (!fp->sb_info) { 2176 QEDF_ERR(NULL, "fp->sb_info in null."); 2177 return IRQ_HANDLED; 2178 } 2179 2180 /* 2181 * Disable interrupts for this status block while we process new 2182 * completions 2183 */ 2184 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/); 2185 2186 while (1) { 2187 qedf_process_completions(fp); 2188 2189 if (qedf_fp_has_work(fp) == 0) { 2190 /* Update the sb information */ 2191 qed_sb_update_sb_idx(fp->sb_info); 2192 2193 /* Check for more work */ 2194 rmb(); 2195 2196 if (qedf_fp_has_work(fp) == 0) { 2197 /* Re-enable interrupts */ 2198 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 2199 return IRQ_HANDLED; 2200 } 2201 } 2202 } 2203 2204 /* Do we ever want to break out of above loop? */ 2205 return IRQ_HANDLED; 2206 } 2207 2208 /* simd handler for MSI/INTa */ 2209 static void qedf_simd_int_handler(void *cookie) 2210 { 2211 /* Cookie is qedf_ctx struct */ 2212 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2213 2214 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf); 2215 } 2216 2217 #define QEDF_SIMD_HANDLER_NUM 0 2218 static void qedf_sync_free_irqs(struct qedf_ctx *qedf) 2219 { 2220 int i; 2221 u16 vector_idx = 0; 2222 u32 vector; 2223 2224 if (qedf->int_info.msix_cnt) { 2225 for (i = 0; i < qedf->int_info.used_cnt; i++) { 2226 vector_idx = i * qedf->dev_info.common.num_hwfns + 2227 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2228 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2229 "Freeing IRQ #%d vector_idx=%d.\n", 2230 i, vector_idx); 2231 vector = qedf->int_info.msix[vector_idx].vector; 2232 synchronize_irq(vector); 2233 irq_set_affinity_hint(vector, NULL); 2234 irq_set_affinity_notifier(vector, NULL); 2235 free_irq(vector, &qedf->fp_array[i]); 2236 } 2237 } else 2238 qed_ops->common->simd_handler_clean(qedf->cdev, 2239 QEDF_SIMD_HANDLER_NUM); 2240 2241 qedf->int_info.used_cnt = 0; 2242 qed_ops->common->set_fp_int(qedf->cdev, 0); 2243 } 2244 2245 static int qedf_request_msix_irq(struct qedf_ctx *qedf) 2246 { 2247 int i, rc, cpu; 2248 u16 vector_idx = 0; 2249 u32 vector; 2250 2251 cpu = cpumask_first(cpu_online_mask); 2252 for (i = 0; i < qedf->num_queues; i++) { 2253 vector_idx = i * qedf->dev_info.common.num_hwfns + 2254 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2255 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2256 "Requesting IRQ #%d vector_idx=%d.\n", 2257 i, vector_idx); 2258 vector = qedf->int_info.msix[vector_idx].vector; 2259 rc = request_irq(vector, qedf_msix_handler, 0, "qedf", 2260 &qedf->fp_array[i]); 2261 2262 if (rc) { 2263 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n"); 2264 qedf_sync_free_irqs(qedf); 2265 return rc; 2266 } 2267 2268 qedf->int_info.used_cnt++; 2269 rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu)); 2270 cpu = cpumask_next(cpu, cpu_online_mask); 2271 } 2272 2273 return 0; 2274 } 2275 2276 static int qedf_setup_int(struct qedf_ctx *qedf) 2277 { 2278 int rc = 0; 2279 2280 /* 2281 * Learn interrupt configuration 2282 */ 2283 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus()); 2284 if (rc <= 0) 2285 return 0; 2286 2287 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info); 2288 if (rc) 2289 return 0; 2290 2291 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = " 2292 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt, 2293 num_online_cpus()); 2294 2295 if (qedf->int_info.msix_cnt) 2296 return qedf_request_msix_irq(qedf); 2297 2298 qed_ops->common->simd_handler_config(qedf->cdev, &qedf, 2299 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler); 2300 qedf->int_info.used_cnt = 1; 2301 2302 QEDF_ERR(&qedf->dbg_ctx, 2303 "Cannot load driver due to a lack of MSI-X vectors.\n"); 2304 return -EINVAL; 2305 } 2306 2307 /* Main function for libfc frame reception */ 2308 static void qedf_recv_frame(struct qedf_ctx *qedf, 2309 struct sk_buff *skb) 2310 { 2311 u32 fr_len; 2312 struct fc_lport *lport; 2313 struct fc_frame_header *fh; 2314 struct fcoe_crc_eof crc_eof; 2315 struct fc_frame *fp; 2316 u8 *mac = NULL; 2317 u8 *dest_mac = NULL; 2318 struct fcoe_hdr *hp; 2319 struct qedf_rport *fcport; 2320 struct fc_lport *vn_port; 2321 u32 f_ctl; 2322 2323 lport = qedf->lport; 2324 if (lport == NULL || lport->state == LPORT_ST_DISABLED) { 2325 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n"); 2326 kfree_skb(skb); 2327 return; 2328 } 2329 2330 if (skb_is_nonlinear(skb)) 2331 skb_linearize(skb); 2332 mac = eth_hdr(skb)->h_source; 2333 dest_mac = eth_hdr(skb)->h_dest; 2334 2335 /* Pull the header */ 2336 hp = (struct fcoe_hdr *)skb->data; 2337 fh = (struct fc_frame_header *) skb_transport_header(skb); 2338 skb_pull(skb, sizeof(struct fcoe_hdr)); 2339 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 2340 2341 fp = (struct fc_frame *)skb; 2342 fc_frame_init(fp); 2343 fr_dev(fp) = lport; 2344 fr_sof(fp) = hp->fcoe_sof; 2345 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 2346 kfree_skb(skb); 2347 return; 2348 } 2349 fr_eof(fp) = crc_eof.fcoe_eof; 2350 fr_crc(fp) = crc_eof.fcoe_crc32; 2351 if (pskb_trim(skb, fr_len)) { 2352 kfree_skb(skb); 2353 return; 2354 } 2355 2356 fh = fc_frame_header_get(fp); 2357 2358 /* 2359 * Invalid frame filters. 2360 */ 2361 2362 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 2363 fh->fh_type == FC_TYPE_FCP) { 2364 /* Drop FCP data. We dont this in L2 path */ 2365 kfree_skb(skb); 2366 return; 2367 } 2368 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 2369 fh->fh_type == FC_TYPE_ELS) { 2370 switch (fc_frame_payload_op(fp)) { 2371 case ELS_LOGO: 2372 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 2373 /* drop non-FIP LOGO */ 2374 kfree_skb(skb); 2375 return; 2376 } 2377 break; 2378 } 2379 } 2380 2381 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 2382 /* Drop incoming ABTS */ 2383 kfree_skb(skb); 2384 return; 2385 } 2386 2387 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { 2388 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2389 "FC frame d_id mismatch with MAC %pM.\n", dest_mac); 2390 kfree_skb(skb); 2391 return; 2392 } 2393 2394 if (qedf->ctlr.state) { 2395 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) { 2396 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2397 "Wrong source address: mac:%pM dest_addr:%pM.\n", 2398 mac, qedf->ctlr.dest_addr); 2399 kfree_skb(skb); 2400 return; 2401 } 2402 } 2403 2404 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 2405 2406 /* 2407 * If the destination ID from the frame header does not match what we 2408 * have on record for lport and the search for a NPIV port came up 2409 * empty then this is not addressed to our port so simply drop it. 2410 */ 2411 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { 2412 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2413 "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n", 2414 lport->port_id, ntoh24(fh->fh_d_id)); 2415 kfree_skb(skb); 2416 return; 2417 } 2418 2419 f_ctl = ntoh24(fh->fh_f_ctl); 2420 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) && 2421 (f_ctl & FC_FC_EX_CTX)) { 2422 /* Drop incoming ABTS response that has both SEQ/EX CTX set */ 2423 kfree_skb(skb); 2424 return; 2425 } 2426 2427 /* 2428 * If a connection is uploading, drop incoming FCoE frames as there 2429 * is a small window where we could try to return a frame while libfc 2430 * is trying to clean things up. 2431 */ 2432 2433 /* Get fcport associated with d_id if it exists */ 2434 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 2435 2436 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 2437 &fcport->flags)) { 2438 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2439 "Connection uploading, dropping fp=%p.\n", fp); 2440 kfree_skb(skb); 2441 return; 2442 } 2443 2444 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: " 2445 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp, 2446 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, 2447 fh->fh_type); 2448 if (qedf_dump_frames) 2449 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 2450 1, skb->data, skb->len, false); 2451 fc_exch_recv(lport, fp); 2452 } 2453 2454 static void qedf_ll2_process_skb(struct work_struct *work) 2455 { 2456 struct qedf_skb_work *skb_work = 2457 container_of(work, struct qedf_skb_work, work); 2458 struct qedf_ctx *qedf = skb_work->qedf; 2459 struct sk_buff *skb = skb_work->skb; 2460 struct ethhdr *eh; 2461 2462 if (!qedf) { 2463 QEDF_ERR(NULL, "qedf is NULL\n"); 2464 goto err_out; 2465 } 2466 2467 eh = (struct ethhdr *)skb->data; 2468 2469 /* Undo VLAN encapsulation */ 2470 if (eh->h_proto == htons(ETH_P_8021Q)) { 2471 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); 2472 eh = skb_pull(skb, VLAN_HLEN); 2473 skb_reset_mac_header(skb); 2474 } 2475 2476 /* 2477 * Process either a FIP frame or FCoE frame based on the 2478 * protocol value. If it's not either just drop the 2479 * frame. 2480 */ 2481 if (eh->h_proto == htons(ETH_P_FIP)) { 2482 qedf_fip_recv(qedf, skb); 2483 goto out; 2484 } else if (eh->h_proto == htons(ETH_P_FCOE)) { 2485 __skb_pull(skb, ETH_HLEN); 2486 qedf_recv_frame(qedf, skb); 2487 goto out; 2488 } else 2489 goto err_out; 2490 2491 err_out: 2492 kfree_skb(skb); 2493 out: 2494 kfree(skb_work); 2495 return; 2496 } 2497 2498 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb, 2499 u32 arg1, u32 arg2) 2500 { 2501 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2502 struct qedf_skb_work *skb_work; 2503 2504 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 2505 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2506 "Dropping frame as link state is down.\n"); 2507 kfree_skb(skb); 2508 return 0; 2509 } 2510 2511 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC); 2512 if (!skb_work) { 2513 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so " 2514 "dropping frame.\n"); 2515 kfree_skb(skb); 2516 return 0; 2517 } 2518 2519 INIT_WORK(&skb_work->work, qedf_ll2_process_skb); 2520 skb_work->skb = skb; 2521 skb_work->qedf = qedf; 2522 queue_work(qedf->ll2_recv_wq, &skb_work->work); 2523 2524 return 0; 2525 } 2526 2527 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = { 2528 .rx_cb = qedf_ll2_rx, 2529 .tx_cb = NULL, 2530 }; 2531 2532 /* Main thread to process I/O completions */ 2533 void qedf_fp_io_handler(struct work_struct *work) 2534 { 2535 struct qedf_io_work *io_work = 2536 container_of(work, struct qedf_io_work, work); 2537 u32 comp_type; 2538 2539 /* 2540 * Deferred part of unsolicited CQE sends 2541 * frame to libfc. 2542 */ 2543 comp_type = (io_work->cqe.cqe_data >> 2544 FCOE_CQE_CQE_TYPE_SHIFT) & 2545 FCOE_CQE_CQE_TYPE_MASK; 2546 if (comp_type == FCOE_UNSOLIC_CQE_TYPE && 2547 io_work->fp) 2548 fc_exch_recv(io_work->qedf->lport, io_work->fp); 2549 else 2550 qedf_process_cqe(io_work->qedf, &io_work->cqe); 2551 2552 kfree(io_work); 2553 } 2554 2555 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf, 2556 struct qed_sb_info *sb_info, u16 sb_id) 2557 { 2558 struct status_block_e4 *sb_virt; 2559 dma_addr_t sb_phys; 2560 int ret; 2561 2562 sb_virt = dma_alloc_coherent(&qedf->pdev->dev, 2563 sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL); 2564 2565 if (!sb_virt) { 2566 QEDF_ERR(&(qedf->dbg_ctx), "Status block allocation failed " 2567 "for id = %d.\n", sb_id); 2568 return -ENOMEM; 2569 } 2570 2571 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys, 2572 sb_id, QED_SB_TYPE_STORAGE); 2573 2574 if (ret) { 2575 QEDF_ERR(&(qedf->dbg_ctx), "Status block initialization " 2576 "failed for id = %d.\n", sb_id); 2577 return ret; 2578 } 2579 2580 return 0; 2581 } 2582 2583 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info) 2584 { 2585 if (sb_info->sb_virt) 2586 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt), 2587 (void *)sb_info->sb_virt, sb_info->sb_phys); 2588 } 2589 2590 static void qedf_destroy_sb(struct qedf_ctx *qedf) 2591 { 2592 int id; 2593 struct qedf_fastpath *fp = NULL; 2594 2595 for (id = 0; id < qedf->num_queues; id++) { 2596 fp = &(qedf->fp_array[id]); 2597 if (fp->sb_id == QEDF_SB_ID_NULL) 2598 break; 2599 qedf_free_sb(qedf, fp->sb_info); 2600 kfree(fp->sb_info); 2601 } 2602 kfree(qedf->fp_array); 2603 } 2604 2605 static int qedf_prepare_sb(struct qedf_ctx *qedf) 2606 { 2607 int id; 2608 struct qedf_fastpath *fp; 2609 int ret; 2610 2611 qedf->fp_array = 2612 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath), 2613 GFP_KERNEL); 2614 2615 if (!qedf->fp_array) { 2616 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation " 2617 "failed.\n"); 2618 return -ENOMEM; 2619 } 2620 2621 for (id = 0; id < qedf->num_queues; id++) { 2622 fp = &(qedf->fp_array[id]); 2623 fp->sb_id = QEDF_SB_ID_NULL; 2624 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL); 2625 if (!fp->sb_info) { 2626 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct " 2627 "allocation failed.\n"); 2628 goto err; 2629 } 2630 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id); 2631 if (ret) { 2632 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and " 2633 "initialization failed.\n"); 2634 goto err; 2635 } 2636 fp->sb_id = id; 2637 fp->qedf = qedf; 2638 fp->cq_num_entries = 2639 qedf->global_queues[id]->cq_mem_size / 2640 sizeof(struct fcoe_cqe); 2641 } 2642 err: 2643 return 0; 2644 } 2645 2646 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe) 2647 { 2648 u16 xid; 2649 struct qedf_ioreq *io_req; 2650 struct qedf_rport *fcport; 2651 u32 comp_type; 2652 2653 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2654 FCOE_CQE_CQE_TYPE_MASK; 2655 2656 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2657 io_req = &qedf->cmd_mgr->cmds[xid]; 2658 2659 /* Completion not for a valid I/O anymore so just return */ 2660 if (!io_req) 2661 return; 2662 2663 fcport = io_req->fcport; 2664 2665 if (fcport == NULL) { 2666 QEDF_ERR(&(qedf->dbg_ctx), "fcport is NULL.\n"); 2667 return; 2668 } 2669 2670 /* 2671 * Check that fcport is offloaded. If it isn't then the spinlock 2672 * isn't valid and shouldn't be taken. We should just return. 2673 */ 2674 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 2675 QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n"); 2676 return; 2677 } 2678 2679 2680 switch (comp_type) { 2681 case FCOE_GOOD_COMPLETION_CQE_TYPE: 2682 atomic_inc(&fcport->free_sqes); 2683 switch (io_req->cmd_type) { 2684 case QEDF_SCSI_CMD: 2685 qedf_scsi_completion(qedf, cqe, io_req); 2686 break; 2687 case QEDF_ELS: 2688 qedf_process_els_compl(qedf, cqe, io_req); 2689 break; 2690 case QEDF_TASK_MGMT_CMD: 2691 qedf_process_tmf_compl(qedf, cqe, io_req); 2692 break; 2693 case QEDF_SEQ_CLEANUP: 2694 qedf_process_seq_cleanup_compl(qedf, cqe, io_req); 2695 break; 2696 } 2697 break; 2698 case FCOE_ERROR_DETECTION_CQE_TYPE: 2699 atomic_inc(&fcport->free_sqes); 2700 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2701 "Error detect CQE.\n"); 2702 qedf_process_error_detect(qedf, cqe, io_req); 2703 break; 2704 case FCOE_EXCH_CLEANUP_CQE_TYPE: 2705 atomic_inc(&fcport->free_sqes); 2706 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2707 "Cleanup CQE.\n"); 2708 qedf_process_cleanup_compl(qedf, cqe, io_req); 2709 break; 2710 case FCOE_ABTS_CQE_TYPE: 2711 atomic_inc(&fcport->free_sqes); 2712 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2713 "Abort CQE.\n"); 2714 qedf_process_abts_compl(qedf, cqe, io_req); 2715 break; 2716 case FCOE_DUMMY_CQE_TYPE: 2717 atomic_inc(&fcport->free_sqes); 2718 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2719 "Dummy CQE.\n"); 2720 break; 2721 case FCOE_LOCAL_COMP_CQE_TYPE: 2722 atomic_inc(&fcport->free_sqes); 2723 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2724 "Local completion CQE.\n"); 2725 break; 2726 case FCOE_WARNING_CQE_TYPE: 2727 atomic_inc(&fcport->free_sqes); 2728 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2729 "Warning CQE.\n"); 2730 qedf_process_warning_compl(qedf, cqe, io_req); 2731 break; 2732 case MAX_FCOE_CQE_TYPE: 2733 atomic_inc(&fcport->free_sqes); 2734 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2735 "Max FCoE CQE.\n"); 2736 break; 2737 default: 2738 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2739 "Default CQE.\n"); 2740 break; 2741 } 2742 } 2743 2744 static void qedf_free_bdq(struct qedf_ctx *qedf) 2745 { 2746 int i; 2747 2748 if (qedf->bdq_pbl_list) 2749 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE, 2750 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma); 2751 2752 if (qedf->bdq_pbl) 2753 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size, 2754 qedf->bdq_pbl, qedf->bdq_pbl_dma); 2755 2756 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2757 if (qedf->bdq[i].buf_addr) { 2758 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE, 2759 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma); 2760 } 2761 } 2762 } 2763 2764 static void qedf_free_global_queues(struct qedf_ctx *qedf) 2765 { 2766 int i; 2767 struct global_queue **gl = qedf->global_queues; 2768 2769 for (i = 0; i < qedf->num_queues; i++) { 2770 if (!gl[i]) 2771 continue; 2772 2773 if (gl[i]->cq) 2774 dma_free_coherent(&qedf->pdev->dev, 2775 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma); 2776 if (gl[i]->cq_pbl) 2777 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size, 2778 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 2779 2780 kfree(gl[i]); 2781 } 2782 2783 qedf_free_bdq(qedf); 2784 } 2785 2786 static int qedf_alloc_bdq(struct qedf_ctx *qedf) 2787 { 2788 int i; 2789 struct scsi_bd *pbl; 2790 u64 *list; 2791 dma_addr_t page; 2792 2793 /* Alloc dma memory for BDQ buffers */ 2794 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2795 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev, 2796 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL); 2797 if (!qedf->bdq[i].buf_addr) { 2798 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ " 2799 "buffer %d.\n", i); 2800 return -ENOMEM; 2801 } 2802 } 2803 2804 /* Alloc dma memory for BDQ page buffer list */ 2805 qedf->bdq_pbl_mem_size = 2806 QEDF_BDQ_SIZE * sizeof(struct scsi_bd); 2807 qedf->bdq_pbl_mem_size = 2808 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE); 2809 2810 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 2811 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL); 2812 if (!qedf->bdq_pbl) { 2813 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n"); 2814 return -ENOMEM; 2815 } 2816 2817 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2818 "BDQ PBL addr=0x%p dma=%pad\n", 2819 qedf->bdq_pbl, &qedf->bdq_pbl_dma); 2820 2821 /* 2822 * Populate BDQ PBL with physical and virtual address of individual 2823 * BDQ buffers 2824 */ 2825 pbl = (struct scsi_bd *)qedf->bdq_pbl; 2826 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2827 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma)); 2828 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma)); 2829 pbl->opaque.fcoe_opaque.hi = 0; 2830 /* Opaque lo data is an index into the BDQ array */ 2831 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i); 2832 pbl++; 2833 } 2834 2835 /* Allocate list of PBL pages */ 2836 qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev, 2837 QEDF_PAGE_SIZE, 2838 &qedf->bdq_pbl_list_dma, 2839 GFP_KERNEL); 2840 if (!qedf->bdq_pbl_list) { 2841 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n"); 2842 return -ENOMEM; 2843 } 2844 2845 /* 2846 * Now populate PBL list with pages that contain pointers to the 2847 * individual buffers. 2848 */ 2849 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size / 2850 QEDF_PAGE_SIZE; 2851 list = (u64 *)qedf->bdq_pbl_list; 2852 page = qedf->bdq_pbl_list_dma; 2853 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) { 2854 *list = qedf->bdq_pbl_dma; 2855 list++; 2856 page += QEDF_PAGE_SIZE; 2857 } 2858 2859 return 0; 2860 } 2861 2862 static int qedf_alloc_global_queues(struct qedf_ctx *qedf) 2863 { 2864 u32 *list; 2865 int i; 2866 int status = 0, rc; 2867 u32 *pbl; 2868 dma_addr_t page; 2869 int num_pages; 2870 2871 /* Allocate and map CQs, RQs */ 2872 /* 2873 * Number of global queues (CQ / RQ). This should 2874 * be <= number of available MSIX vectors for the PF 2875 */ 2876 if (!qedf->num_queues) { 2877 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n"); 2878 return 1; 2879 } 2880 2881 /* 2882 * Make sure we allocated the PBL that will contain the physical 2883 * addresses of our queues 2884 */ 2885 if (!qedf->p_cpuq) { 2886 status = 1; 2887 goto mem_alloc_failure; 2888 } 2889 2890 qedf->global_queues = kzalloc((sizeof(struct global_queue *) 2891 * qedf->num_queues), GFP_KERNEL); 2892 if (!qedf->global_queues) { 2893 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global " 2894 "queues array ptr memory\n"); 2895 return -ENOMEM; 2896 } 2897 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2898 "qedf->global_queues=%p.\n", qedf->global_queues); 2899 2900 /* Allocate DMA coherent buffers for BDQ */ 2901 rc = qedf_alloc_bdq(qedf); 2902 if (rc) 2903 goto mem_alloc_failure; 2904 2905 /* Allocate a CQ and an associated PBL for each MSI-X vector */ 2906 for (i = 0; i < qedf->num_queues; i++) { 2907 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue), 2908 GFP_KERNEL); 2909 if (!qedf->global_queues[i]) { 2910 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate " 2911 "global queue %d.\n", i); 2912 status = -ENOMEM; 2913 goto mem_alloc_failure; 2914 } 2915 2916 qedf->global_queues[i]->cq_mem_size = 2917 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 2918 qedf->global_queues[i]->cq_mem_size = 2919 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE); 2920 2921 qedf->global_queues[i]->cq_pbl_size = 2922 (qedf->global_queues[i]->cq_mem_size / 2923 PAGE_SIZE) * sizeof(void *); 2924 qedf->global_queues[i]->cq_pbl_size = 2925 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE); 2926 2927 qedf->global_queues[i]->cq = 2928 dma_alloc_coherent(&qedf->pdev->dev, 2929 qedf->global_queues[i]->cq_mem_size, 2930 &qedf->global_queues[i]->cq_dma, 2931 GFP_KERNEL); 2932 2933 if (!qedf->global_queues[i]->cq) { 2934 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n"); 2935 status = -ENOMEM; 2936 goto mem_alloc_failure; 2937 } 2938 2939 qedf->global_queues[i]->cq_pbl = 2940 dma_alloc_coherent(&qedf->pdev->dev, 2941 qedf->global_queues[i]->cq_pbl_size, 2942 &qedf->global_queues[i]->cq_pbl_dma, 2943 GFP_KERNEL); 2944 2945 if (!qedf->global_queues[i]->cq_pbl) { 2946 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n"); 2947 status = -ENOMEM; 2948 goto mem_alloc_failure; 2949 } 2950 2951 /* Create PBL */ 2952 num_pages = qedf->global_queues[i]->cq_mem_size / 2953 QEDF_PAGE_SIZE; 2954 page = qedf->global_queues[i]->cq_dma; 2955 pbl = (u32 *)qedf->global_queues[i]->cq_pbl; 2956 2957 while (num_pages--) { 2958 *pbl = U64_LO(page); 2959 pbl++; 2960 *pbl = U64_HI(page); 2961 pbl++; 2962 page += QEDF_PAGE_SIZE; 2963 } 2964 /* Set the initial consumer index for cq */ 2965 qedf->global_queues[i]->cq_cons_idx = 0; 2966 } 2967 2968 list = (u32 *)qedf->p_cpuq; 2969 2970 /* 2971 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 2972 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 2973 * to the physical address which contains an array of pointers to 2974 * the physical addresses of the specific queue pages. 2975 */ 2976 for (i = 0; i < qedf->num_queues; i++) { 2977 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma); 2978 list++; 2979 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma); 2980 list++; 2981 *list = U64_LO(0); 2982 list++; 2983 *list = U64_HI(0); 2984 list++; 2985 } 2986 2987 return 0; 2988 2989 mem_alloc_failure: 2990 qedf_free_global_queues(qedf); 2991 return status; 2992 } 2993 2994 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf) 2995 { 2996 u8 sq_num_pbl_pages; 2997 u32 sq_mem_size; 2998 u32 cq_mem_size; 2999 u32 cq_num_entries; 3000 int rval; 3001 3002 /* 3003 * The number of completion queues/fastpath interrupts/status blocks 3004 * we allocation is the minimum off: 3005 * 3006 * Number of CPUs 3007 * Number allocated by qed for our PCI function 3008 */ 3009 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf); 3010 3011 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n", 3012 qedf->num_queues); 3013 3014 qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev, 3015 qedf->num_queues * sizeof(struct qedf_glbl_q_params), 3016 &qedf->hw_p_cpuq, GFP_KERNEL); 3017 3018 if (!qedf->p_cpuq) { 3019 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n"); 3020 return 1; 3021 } 3022 3023 rval = qedf_alloc_global_queues(qedf); 3024 if (rval) { 3025 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation " 3026 "failed.\n"); 3027 return 1; 3028 } 3029 3030 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */ 3031 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 3032 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE); 3033 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE); 3034 3035 /* Calculate CQ num entries */ 3036 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3037 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE); 3038 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe); 3039 3040 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params)); 3041 3042 /* Setup the value for fcoe PF */ 3043 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS; 3044 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS; 3045 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr = 3046 (u64)qedf->hw_p_cpuq; 3047 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages; 3048 3049 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0; 3050 3051 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries; 3052 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues; 3053 3054 /* log_page_size: 12 for 4KB pages */ 3055 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE); 3056 3057 qedf->pf_params.fcoe_pf_params.mtu = 9000; 3058 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI; 3059 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI; 3060 3061 /* BDQ address and size */ 3062 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] = 3063 qedf->bdq_pbl_list_dma; 3064 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] = 3065 qedf->bdq_pbl_list_num_entries; 3066 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE; 3067 3068 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3069 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n", 3070 qedf->bdq_pbl_list, 3071 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0], 3072 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]); 3073 3074 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3075 "cq_num_entries=%d.\n", 3076 qedf->pf_params.fcoe_pf_params.cq_num_entries); 3077 3078 return 0; 3079 } 3080 3081 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 3082 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf) 3083 { 3084 size_t size = 0; 3085 3086 if (qedf->p_cpuq) { 3087 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params); 3088 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq, 3089 qedf->hw_p_cpuq); 3090 } 3091 3092 qedf_free_global_queues(qedf); 3093 3094 kfree(qedf->global_queues); 3095 } 3096 3097 /* 3098 * PCI driver functions 3099 */ 3100 3101 static const struct pci_device_id qedf_pci_tbl[] = { 3102 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) }, 3103 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) }, 3104 {0} 3105 }; 3106 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl); 3107 3108 static struct pci_driver qedf_pci_driver = { 3109 .name = QEDF_MODULE_NAME, 3110 .id_table = qedf_pci_tbl, 3111 .probe = qedf_probe, 3112 .remove = qedf_remove, 3113 }; 3114 3115 static int __qedf_probe(struct pci_dev *pdev, int mode) 3116 { 3117 int rc = -EINVAL; 3118 struct fc_lport *lport; 3119 struct qedf_ctx *qedf; 3120 struct Scsi_Host *host; 3121 bool is_vf = false; 3122 struct qed_ll2_params params; 3123 char host_buf[20]; 3124 struct qed_link_params link_params; 3125 int status; 3126 void *task_start, *task_end; 3127 struct qed_slowpath_params slowpath_params; 3128 struct qed_probe_params qed_params; 3129 u16 tmp; 3130 3131 /* 3132 * When doing error recovery we didn't reap the lport so don't try 3133 * to reallocate it. 3134 */ 3135 if (mode != QEDF_MODE_RECOVERY) { 3136 lport = libfc_host_alloc(&qedf_host_template, 3137 sizeof(struct qedf_ctx)); 3138 3139 if (!lport) { 3140 QEDF_ERR(NULL, "Could not allocate lport.\n"); 3141 rc = -ENOMEM; 3142 goto err0; 3143 } 3144 3145 fc_disc_init(lport); 3146 3147 /* Initialize qedf_ctx */ 3148 qedf = lport_priv(lport); 3149 qedf->lport = lport; 3150 qedf->ctlr.lp = lport; 3151 qedf->pdev = pdev; 3152 qedf->dbg_ctx.pdev = pdev; 3153 qedf->dbg_ctx.host_no = lport->host->host_no; 3154 spin_lock_init(&qedf->hba_lock); 3155 INIT_LIST_HEAD(&qedf->fcports); 3156 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1; 3157 atomic_set(&qedf->num_offloads, 0); 3158 qedf->stop_io_on_error = false; 3159 pci_set_drvdata(pdev, qedf); 3160 init_completion(&qedf->fipvlan_compl); 3161 mutex_init(&qedf->stats_mutex); 3162 mutex_init(&qedf->flush_mutex); 3163 3164 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, 3165 "QLogic FastLinQ FCoE Module qedf %s, " 3166 "FW %d.%d.%d.%d\n", QEDF_VERSION, 3167 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 3168 FW_ENGINEERING_VERSION); 3169 } else { 3170 /* Init pointers during recovery */ 3171 qedf = pci_get_drvdata(pdev); 3172 lport = qedf->lport; 3173 } 3174 3175 host = lport->host; 3176 3177 /* Allocate mempool for qedf_io_work structs */ 3178 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN, 3179 qedf_io_work_cache); 3180 if (qedf->io_mempool == NULL) { 3181 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n"); 3182 goto err1; 3183 } 3184 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n", 3185 qedf->io_mempool); 3186 3187 sprintf(host_buf, "qedf_%u_link", 3188 qedf->lport->host->host_no); 3189 qedf->link_update_wq = create_workqueue(host_buf); 3190 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update); 3191 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery); 3192 INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump); 3193 qedf->fipvlan_retries = qedf_fipvlan_retries; 3194 /* Set a default prio in case DCBX doesn't converge */ 3195 if (qedf_default_prio > -1) { 3196 /* 3197 * This is the case where we pass a modparam in so we want to 3198 * honor it even if dcbx doesn't converge. 3199 */ 3200 qedf->prio = qedf_default_prio; 3201 } else 3202 qedf->prio = QEDF_DEFAULT_PRIO; 3203 3204 /* 3205 * Common probe. Takes care of basic hardware init and pci_* 3206 * functions. 3207 */ 3208 memset(&qed_params, 0, sizeof(qed_params)); 3209 qed_params.protocol = QED_PROTOCOL_FCOE; 3210 qed_params.dp_module = qedf_dp_module; 3211 qed_params.dp_level = qedf_dp_level; 3212 qed_params.is_vf = is_vf; 3213 qedf->cdev = qed_ops->common->probe(pdev, &qed_params); 3214 if (!qedf->cdev) { 3215 rc = -ENODEV; 3216 goto err1; 3217 } 3218 3219 /* Learn information crucial for qedf to progress */ 3220 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3221 if (rc) { 3222 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n"); 3223 goto err1; 3224 } 3225 3226 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 3227 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n", 3228 qedf->dev_info.common.num_hwfns, 3229 qed_ops->common->get_affin_hwfn_idx(qedf->cdev)); 3230 3231 /* queue allocation code should come here 3232 * order should be 3233 * slowpath_start 3234 * status block allocation 3235 * interrupt registration (to get min number of queues) 3236 * set_fcoe_pf_param 3237 * qed_sp_fcoe_func_start 3238 */ 3239 rc = qedf_set_fcoe_pf_param(qedf); 3240 if (rc) { 3241 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n"); 3242 goto err2; 3243 } 3244 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3245 3246 /* Record BDQ producer doorbell addresses */ 3247 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr; 3248 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr; 3249 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3250 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod, 3251 qedf->bdq_secondary_prod); 3252 3253 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf); 3254 3255 rc = qedf_prepare_sb(qedf); 3256 if (rc) { 3257 3258 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3259 goto err2; 3260 } 3261 3262 /* Start the Slowpath-process */ 3263 slowpath_params.int_mode = QED_INT_MODE_MSIX; 3264 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER; 3265 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER; 3266 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER; 3267 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER; 3268 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE); 3269 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params); 3270 if (rc) { 3271 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3272 goto err2; 3273 } 3274 3275 /* 3276 * update_pf_params needs to be called before and after slowpath 3277 * start 3278 */ 3279 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3280 3281 /* Setup interrupts */ 3282 rc = qedf_setup_int(qedf); 3283 if (rc) 3284 goto err3; 3285 3286 rc = qed_ops->start(qedf->cdev, &qedf->tasks); 3287 if (rc) { 3288 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n"); 3289 goto err4; 3290 } 3291 task_start = qedf_get_task_mem(&qedf->tasks, 0); 3292 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1); 3293 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, " 3294 "end=%p block_size=%u.\n", task_start, task_end, 3295 qedf->tasks.size); 3296 3297 /* 3298 * We need to write the number of BDs in the BDQ we've preallocated so 3299 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 3300 * packet arrives. 3301 */ 3302 qedf->bdq_prod_idx = QEDF_BDQ_SIZE; 3303 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3304 "Writing %d to primary and secondary BDQ doorbell registers.\n", 3305 qedf->bdq_prod_idx); 3306 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod); 3307 tmp = readw(qedf->bdq_primary_prod); 3308 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod); 3309 tmp = readw(qedf->bdq_secondary_prod); 3310 3311 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3312 3313 /* Now that the dev_info struct has been filled in set the MAC 3314 * address 3315 */ 3316 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac); 3317 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n", 3318 qedf->mac); 3319 3320 /* 3321 * Set the WWNN and WWPN in the following way: 3322 * 3323 * If the info we get from qed is non-zero then use that to set the 3324 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based 3325 * on the MAC address. 3326 */ 3327 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) { 3328 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3329 "Setting WWPN and WWNN from qed dev_info.\n"); 3330 qedf->wwnn = qedf->dev_info.wwnn; 3331 qedf->wwpn = qedf->dev_info.wwpn; 3332 } else { 3333 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3334 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n"); 3335 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0); 3336 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0); 3337 } 3338 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx " 3339 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn); 3340 3341 sprintf(host_buf, "host_%d", host->host_no); 3342 qed_ops->common->set_name(qedf->cdev, host_buf); 3343 3344 /* Allocate cmd mgr */ 3345 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf); 3346 if (!qedf->cmd_mgr) { 3347 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n"); 3348 rc = -ENOMEM; 3349 goto err5; 3350 } 3351 3352 if (mode != QEDF_MODE_RECOVERY) { 3353 host->transportt = qedf_fc_transport_template; 3354 host->max_lun = qedf_max_lun; 3355 host->max_cmd_len = QEDF_MAX_CDB_LEN; 3356 host->can_queue = FCOE_PARAMS_NUM_TASKS; 3357 rc = scsi_add_host(host, &pdev->dev); 3358 if (rc) { 3359 QEDF_WARN(&qedf->dbg_ctx, 3360 "Error adding Scsi_Host rc=0x%x.\n", rc); 3361 goto err6; 3362 } 3363 } 3364 3365 memset(¶ms, 0, sizeof(params)); 3366 params.mtu = 9000; 3367 ether_addr_copy(params.ll2_mac_address, qedf->mac); 3368 3369 /* Start LL2 processing thread */ 3370 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no); 3371 qedf->ll2_recv_wq = 3372 create_workqueue(host_buf); 3373 if (!qedf->ll2_recv_wq) { 3374 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n"); 3375 rc = -ENOMEM; 3376 goto err7; 3377 } 3378 3379 #ifdef CONFIG_DEBUG_FS 3380 qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops, 3381 qedf_dbg_fops); 3382 #endif 3383 3384 /* Start LL2 */ 3385 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf); 3386 rc = qed_ops->ll2->start(qedf->cdev, ¶ms); 3387 if (rc) { 3388 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n"); 3389 goto err7; 3390 } 3391 set_bit(QEDF_LL2_STARTED, &qedf->flags); 3392 3393 /* Set initial FIP/FCoE VLAN to NULL */ 3394 qedf->vlan_id = 0; 3395 3396 /* 3397 * No need to setup fcoe_ctlr or fc_lport objects during recovery since 3398 * they were not reaped during the unload process. 3399 */ 3400 if (mode != QEDF_MODE_RECOVERY) { 3401 /* Setup imbedded fcoe controller */ 3402 qedf_fcoe_ctlr_setup(qedf); 3403 3404 /* Setup lport */ 3405 rc = qedf_lport_setup(qedf); 3406 if (rc) { 3407 QEDF_ERR(&(qedf->dbg_ctx), 3408 "qedf_lport_setup failed.\n"); 3409 goto err7; 3410 } 3411 } 3412 3413 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no); 3414 qedf->timer_work_queue = 3415 create_workqueue(host_buf); 3416 if (!qedf->timer_work_queue) { 3417 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer " 3418 "workqueue.\n"); 3419 rc = -ENOMEM; 3420 goto err7; 3421 } 3422 3423 /* DPC workqueue is not reaped during recovery unload */ 3424 if (mode != QEDF_MODE_RECOVERY) { 3425 sprintf(host_buf, "qedf_%u_dpc", 3426 qedf->lport->host->host_no); 3427 qedf->dpc_wq = create_workqueue(host_buf); 3428 } 3429 3430 /* 3431 * GRC dump and sysfs parameters are not reaped during the recovery 3432 * unload process. 3433 */ 3434 if (mode != QEDF_MODE_RECOVERY) { 3435 qedf->grcdump_size = 3436 qed_ops->common->dbg_all_data_size(qedf->cdev); 3437 if (qedf->grcdump_size) { 3438 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump, 3439 qedf->grcdump_size); 3440 if (rc) { 3441 QEDF_ERR(&(qedf->dbg_ctx), 3442 "GRC Dump buffer alloc failed.\n"); 3443 qedf->grcdump = NULL; 3444 } 3445 3446 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3447 "grcdump: addr=%p, size=%u.\n", 3448 qedf->grcdump, qedf->grcdump_size); 3449 } 3450 qedf_create_sysfs_ctx_attr(qedf); 3451 3452 /* Initialize I/O tracing for this adapter */ 3453 spin_lock_init(&qedf->io_trace_lock); 3454 qedf->io_trace_idx = 0; 3455 } 3456 3457 init_completion(&qedf->flogi_compl); 3458 3459 status = qed_ops->common->update_drv_state(qedf->cdev, true); 3460 if (status) 3461 QEDF_ERR(&(qedf->dbg_ctx), 3462 "Failed to send drv state to MFW.\n"); 3463 3464 memset(&link_params, 0, sizeof(struct qed_link_params)); 3465 link_params.link_up = true; 3466 status = qed_ops->common->set_link(qedf->cdev, &link_params); 3467 if (status) 3468 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n"); 3469 3470 /* Start/restart discovery */ 3471 if (mode == QEDF_MODE_RECOVERY) 3472 fcoe_ctlr_link_up(&qedf->ctlr); 3473 else 3474 fc_fabric_login(lport); 3475 3476 /* All good */ 3477 return 0; 3478 3479 err7: 3480 if (qedf->ll2_recv_wq) 3481 destroy_workqueue(qedf->ll2_recv_wq); 3482 fc_remove_host(qedf->lport->host); 3483 scsi_remove_host(qedf->lport->host); 3484 #ifdef CONFIG_DEBUG_FS 3485 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3486 #endif 3487 err6: 3488 qedf_cmd_mgr_free(qedf->cmd_mgr); 3489 err5: 3490 qed_ops->stop(qedf->cdev); 3491 err4: 3492 qedf_free_fcoe_pf_param(qedf); 3493 qedf_sync_free_irqs(qedf); 3494 err3: 3495 qed_ops->common->slowpath_stop(qedf->cdev); 3496 err2: 3497 qed_ops->common->remove(qedf->cdev); 3498 err1: 3499 scsi_host_put(lport->host); 3500 err0: 3501 return rc; 3502 } 3503 3504 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id) 3505 { 3506 return __qedf_probe(pdev, QEDF_MODE_NORMAL); 3507 } 3508 3509 static void __qedf_remove(struct pci_dev *pdev, int mode) 3510 { 3511 struct qedf_ctx *qedf; 3512 int rc; 3513 3514 if (!pdev) { 3515 QEDF_ERR(NULL, "pdev is NULL.\n"); 3516 return; 3517 } 3518 3519 qedf = pci_get_drvdata(pdev); 3520 3521 /* 3522 * Prevent race where we're in board disable work and then try to 3523 * rmmod the module. 3524 */ 3525 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 3526 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n"); 3527 return; 3528 } 3529 3530 if (mode != QEDF_MODE_RECOVERY) 3531 set_bit(QEDF_UNLOADING, &qedf->flags); 3532 3533 /* Logoff the fabric to upload all connections */ 3534 if (mode == QEDF_MODE_RECOVERY) 3535 fcoe_ctlr_link_down(&qedf->ctlr); 3536 else 3537 fc_fabric_logoff(qedf->lport); 3538 3539 if (qedf_wait_for_upload(qedf) == false) 3540 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 3541 3542 #ifdef CONFIG_DEBUG_FS 3543 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3544 #endif 3545 3546 /* Stop any link update handling */ 3547 cancel_delayed_work_sync(&qedf->link_update); 3548 destroy_workqueue(qedf->link_update_wq); 3549 qedf->link_update_wq = NULL; 3550 3551 if (qedf->timer_work_queue) 3552 destroy_workqueue(qedf->timer_work_queue); 3553 3554 /* Stop Light L2 */ 3555 clear_bit(QEDF_LL2_STARTED, &qedf->flags); 3556 qed_ops->ll2->stop(qedf->cdev); 3557 if (qedf->ll2_recv_wq) 3558 destroy_workqueue(qedf->ll2_recv_wq); 3559 3560 /* Stop fastpath */ 3561 qedf_sync_free_irqs(qedf); 3562 qedf_destroy_sb(qedf); 3563 3564 /* 3565 * During recovery don't destroy OS constructs that represent the 3566 * physical port. 3567 */ 3568 if (mode != QEDF_MODE_RECOVERY) { 3569 qedf_free_grc_dump_buf(&qedf->grcdump); 3570 qedf_remove_sysfs_ctx_attr(qedf); 3571 3572 /* Remove all SCSI/libfc/libfcoe structures */ 3573 fcoe_ctlr_destroy(&qedf->ctlr); 3574 fc_lport_destroy(qedf->lport); 3575 fc_remove_host(qedf->lport->host); 3576 scsi_remove_host(qedf->lport->host); 3577 } 3578 3579 qedf_cmd_mgr_free(qedf->cmd_mgr); 3580 3581 if (mode != QEDF_MODE_RECOVERY) { 3582 fc_exch_mgr_free(qedf->lport); 3583 fc_lport_free_stats(qedf->lport); 3584 3585 /* Wait for all vports to be reaped */ 3586 qedf_wait_for_vport_destroy(qedf); 3587 } 3588 3589 /* 3590 * Now that all connections have been uploaded we can stop the 3591 * rest of the qed operations 3592 */ 3593 qed_ops->stop(qedf->cdev); 3594 3595 if (mode != QEDF_MODE_RECOVERY) { 3596 if (qedf->dpc_wq) { 3597 /* Stop general DPC handling */ 3598 destroy_workqueue(qedf->dpc_wq); 3599 qedf->dpc_wq = NULL; 3600 } 3601 } 3602 3603 /* Final shutdown for the board */ 3604 qedf_free_fcoe_pf_param(qedf); 3605 if (mode != QEDF_MODE_RECOVERY) { 3606 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3607 pci_set_drvdata(pdev, NULL); 3608 } 3609 3610 rc = qed_ops->common->update_drv_state(qedf->cdev, false); 3611 if (rc) 3612 QEDF_ERR(&(qedf->dbg_ctx), 3613 "Failed to send drv state to MFW.\n"); 3614 3615 qed_ops->common->slowpath_stop(qedf->cdev); 3616 qed_ops->common->remove(qedf->cdev); 3617 3618 mempool_destroy(qedf->io_mempool); 3619 3620 /* Only reap the Scsi_host on a real removal */ 3621 if (mode != QEDF_MODE_RECOVERY) 3622 scsi_host_put(qedf->lport->host); 3623 } 3624 3625 static void qedf_remove(struct pci_dev *pdev) 3626 { 3627 /* Check to make sure this function wasn't already disabled */ 3628 if (!atomic_read(&pdev->enable_cnt)) 3629 return; 3630 3631 __qedf_remove(pdev, QEDF_MODE_NORMAL); 3632 } 3633 3634 void qedf_wq_grcdump(struct work_struct *work) 3635 { 3636 struct qedf_ctx *qedf = 3637 container_of(work, struct qedf_ctx, grcdump_work.work); 3638 3639 QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n"); 3640 qedf_capture_grc_dump(qedf); 3641 } 3642 3643 /* 3644 * Protocol TLV handler 3645 */ 3646 void qedf_get_protocol_tlv_data(void *dev, void *data) 3647 { 3648 struct qedf_ctx *qedf = dev; 3649 struct qed_mfw_tlv_fcoe *fcoe = data; 3650 struct fc_lport *lport = qedf->lport; 3651 struct Scsi_Host *host = lport->host; 3652 struct fc_host_attrs *fc_host = shost_to_fc_host(host); 3653 struct fc_host_statistics *hst; 3654 3655 /* Force a refresh of the fc_host stats including offload stats */ 3656 hst = qedf_fc_get_host_stats(host); 3657 3658 fcoe->qos_pri_set = true; 3659 fcoe->qos_pri = 3; /* Hard coded to 3 in driver */ 3660 3661 fcoe->ra_tov_set = true; 3662 fcoe->ra_tov = lport->r_a_tov; 3663 3664 fcoe->ed_tov_set = true; 3665 fcoe->ed_tov = lport->e_d_tov; 3666 3667 fcoe->npiv_state_set = true; 3668 fcoe->npiv_state = 1; /* NPIV always enabled */ 3669 3670 fcoe->num_npiv_ids_set = true; 3671 fcoe->num_npiv_ids = fc_host->npiv_vports_inuse; 3672 3673 /* Certain attributes we only want to set if we've selected an FCF */ 3674 if (qedf->ctlr.sel_fcf) { 3675 fcoe->switch_name_set = true; 3676 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name); 3677 } 3678 3679 fcoe->port_state_set = true; 3680 /* For qedf we're either link down or fabric attach */ 3681 if (lport->link_up) 3682 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC; 3683 else 3684 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE; 3685 3686 fcoe->link_failures_set = true; 3687 fcoe->link_failures = (u16)hst->link_failure_count; 3688 3689 fcoe->fcoe_txq_depth_set = true; 3690 fcoe->fcoe_rxq_depth_set = true; 3691 fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS; 3692 fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS; 3693 3694 fcoe->fcoe_rx_frames_set = true; 3695 fcoe->fcoe_rx_frames = hst->rx_frames; 3696 3697 fcoe->fcoe_tx_frames_set = true; 3698 fcoe->fcoe_tx_frames = hst->tx_frames; 3699 3700 fcoe->fcoe_rx_bytes_set = true; 3701 fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000; 3702 3703 fcoe->fcoe_tx_bytes_set = true; 3704 fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000; 3705 3706 fcoe->crc_count_set = true; 3707 fcoe->crc_count = hst->invalid_crc_count; 3708 3709 fcoe->tx_abts_set = true; 3710 fcoe->tx_abts = hst->fcp_packet_aborts; 3711 3712 fcoe->tx_lun_rst_set = true; 3713 fcoe->tx_lun_rst = qedf->lun_resets; 3714 3715 fcoe->abort_task_sets_set = true; 3716 fcoe->abort_task_sets = qedf->packet_aborts; 3717 3718 fcoe->scsi_busy_set = true; 3719 fcoe->scsi_busy = qedf->busy; 3720 3721 fcoe->scsi_tsk_full_set = true; 3722 fcoe->scsi_tsk_full = qedf->task_set_fulls; 3723 } 3724 3725 /* Generic TLV data callback */ 3726 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 3727 { 3728 struct qedf_ctx *qedf; 3729 3730 if (!dev) { 3731 QEDF_INFO(NULL, QEDF_LOG_EVT, 3732 "dev is NULL so ignoring get_generic_tlv_data request.\n"); 3733 return; 3734 } 3735 qedf = (struct qedf_ctx *)dev; 3736 3737 memset(data, 0, sizeof(struct qed_generic_tlvs)); 3738 ether_addr_copy(data->mac[0], qedf->mac); 3739 } 3740 3741 /* 3742 * Module Init/Remove 3743 */ 3744 3745 static int __init qedf_init(void) 3746 { 3747 int ret; 3748 3749 /* If debug=1 passed, set the default log mask */ 3750 if (qedf_debug == QEDF_LOG_DEFAULT) 3751 qedf_debug = QEDF_DEFAULT_LOG_MASK; 3752 3753 /* 3754 * Check that default prio for FIP/FCoE traffic is between 0..7 if a 3755 * value has been set 3756 */ 3757 if (qedf_default_prio > -1) 3758 if (qedf_default_prio > 7) { 3759 qedf_default_prio = QEDF_DEFAULT_PRIO; 3760 QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n", 3761 QEDF_DEFAULT_PRIO); 3762 } 3763 3764 /* Print driver banner */ 3765 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR, 3766 QEDF_VERSION); 3767 3768 /* Create kmem_cache for qedf_io_work structs */ 3769 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache", 3770 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL); 3771 if (qedf_io_work_cache == NULL) { 3772 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n"); 3773 goto err1; 3774 } 3775 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n", 3776 qedf_io_work_cache); 3777 3778 qed_ops = qed_get_fcoe_ops(); 3779 if (!qed_ops) { 3780 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n"); 3781 goto err1; 3782 } 3783 3784 #ifdef CONFIG_DEBUG_FS 3785 qedf_dbg_init("qedf"); 3786 #endif 3787 3788 qedf_fc_transport_template = 3789 fc_attach_transport(&qedf_fc_transport_fn); 3790 if (!qedf_fc_transport_template) { 3791 QEDF_ERR(NULL, "Could not register with FC transport\n"); 3792 goto err2; 3793 } 3794 3795 qedf_fc_vport_transport_template = 3796 fc_attach_transport(&qedf_fc_vport_transport_fn); 3797 if (!qedf_fc_vport_transport_template) { 3798 QEDF_ERR(NULL, "Could not register vport template with FC " 3799 "transport\n"); 3800 goto err3; 3801 } 3802 3803 qedf_io_wq = create_workqueue("qedf_io_wq"); 3804 if (!qedf_io_wq) { 3805 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n"); 3806 goto err4; 3807 } 3808 3809 qedf_cb_ops.get_login_failures = qedf_get_login_failures; 3810 3811 ret = pci_register_driver(&qedf_pci_driver); 3812 if (ret) { 3813 QEDF_ERR(NULL, "Failed to register driver\n"); 3814 goto err5; 3815 } 3816 3817 return 0; 3818 3819 err5: 3820 destroy_workqueue(qedf_io_wq); 3821 err4: 3822 fc_release_transport(qedf_fc_vport_transport_template); 3823 err3: 3824 fc_release_transport(qedf_fc_transport_template); 3825 err2: 3826 #ifdef CONFIG_DEBUG_FS 3827 qedf_dbg_exit(); 3828 #endif 3829 qed_put_fcoe_ops(); 3830 err1: 3831 return -EINVAL; 3832 } 3833 3834 static void __exit qedf_cleanup(void) 3835 { 3836 pci_unregister_driver(&qedf_pci_driver); 3837 3838 destroy_workqueue(qedf_io_wq); 3839 3840 fc_release_transport(qedf_fc_vport_transport_template); 3841 fc_release_transport(qedf_fc_transport_template); 3842 #ifdef CONFIG_DEBUG_FS 3843 qedf_dbg_exit(); 3844 #endif 3845 qed_put_fcoe_ops(); 3846 3847 kmem_cache_destroy(qedf_io_work_cache); 3848 } 3849 3850 MODULE_LICENSE("GPL"); 3851 MODULE_DESCRIPTION("QLogic QEDF 25/40/50/100Gb FCoE Driver"); 3852 MODULE_AUTHOR("QLogic Corporation"); 3853 MODULE_VERSION(QEDF_VERSION); 3854 module_init(qedf_init); 3855 module_exit(qedf_cleanup); 3856