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 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 128 QEDF_ERR(&(qedf->dbg_ctx), "Link not up.\n"); 129 return false; 130 } 131 132 while (qedf->fipvlan_retries--) { 133 if (qedf->vlan_id > 0) 134 return true; 135 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 136 "Retry %d.\n", qedf->fipvlan_retries); 137 init_completion(&qedf->fipvlan_compl); 138 qedf_fcoe_send_vlan_req(qedf); 139 rc = wait_for_completion_timeout(&qedf->fipvlan_compl, 140 1 * HZ); 141 if (rc > 0) { 142 fcoe_ctlr_link_up(&qedf->ctlr); 143 return true; 144 } 145 } 146 147 return false; 148 } 149 150 static void qedf_handle_link_update(struct work_struct *work) 151 { 152 struct qedf_ctx *qedf = 153 container_of(work, struct qedf_ctx, link_update.work); 154 int rc; 155 156 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Entered.\n"); 157 158 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 159 rc = qedf_initiate_fipvlan_req(qedf); 160 if (rc) 161 return; 162 /* 163 * If we get here then we never received a repsonse to our 164 * fip vlan request so set the vlan_id to the default and 165 * tell FCoE that the link is up 166 */ 167 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN " 168 "response, falling back to default VLAN %d.\n", 169 qedf_fallback_vlan); 170 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 171 172 /* 173 * Zero out data_src_addr so we'll update it with the new 174 * lport port_id 175 */ 176 eth_zero_addr(qedf->data_src_addr); 177 fcoe_ctlr_link_up(&qedf->ctlr); 178 } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 179 /* 180 * If we hit here and link_down_tmo_valid is still 1 it means 181 * that link_down_tmo timed out so set it to 0 to make sure any 182 * other readers have accurate state. 183 */ 184 atomic_set(&qedf->link_down_tmo_valid, 0); 185 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 186 "Calling fcoe_ctlr_link_down().\n"); 187 fcoe_ctlr_link_down(&qedf->ctlr); 188 qedf_wait_for_upload(qedf); 189 /* Reset the number of FIP VLAN retries */ 190 qedf->fipvlan_retries = qedf_fipvlan_retries; 191 } 192 } 193 194 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1 195 #define QEDF_FCOE_MAC_METHOD_FCF_MAP 2 196 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3 197 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp) 198 { 199 u8 *granted_mac; 200 struct fc_frame_header *fh = fc_frame_header_get(fp); 201 u8 fc_map[3]; 202 int method = 0; 203 204 /* Get granted MAC address from FIP FLOGI payload */ 205 granted_mac = fr_cb(fp)->granted_mac; 206 207 /* 208 * We set the source MAC for FCoE traffic based on the Granted MAC 209 * address from the switch. 210 * 211 * If granted_mac is non-zero, we used that. 212 * If the granted_mac is zeroed out, created the FCoE MAC based on 213 * the sel_fcf->fc_map and the d_id fo the FLOGI frame. 214 * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the 215 * d_id of the FLOGI frame. 216 */ 217 if (!is_zero_ether_addr(granted_mac)) { 218 ether_addr_copy(qedf->data_src_addr, granted_mac); 219 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC; 220 } else if (qedf->ctlr.sel_fcf->fc_map != 0) { 221 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map); 222 qedf->data_src_addr[0] = fc_map[0]; 223 qedf->data_src_addr[1] = fc_map[1]; 224 qedf->data_src_addr[2] = fc_map[2]; 225 qedf->data_src_addr[3] = fh->fh_d_id[0]; 226 qedf->data_src_addr[4] = fh->fh_d_id[1]; 227 qedf->data_src_addr[5] = fh->fh_d_id[2]; 228 method = QEDF_FCOE_MAC_METHOD_FCF_MAP; 229 } else { 230 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id); 231 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC; 232 } 233 234 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 235 "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method); 236 } 237 238 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp, 239 void *arg) 240 { 241 struct fc_exch *exch = fc_seq_exch(seq); 242 struct fc_lport *lport = exch->lp; 243 struct qedf_ctx *qedf = lport_priv(lport); 244 245 if (!qedf) { 246 QEDF_ERR(NULL, "qedf is NULL.\n"); 247 return; 248 } 249 250 /* 251 * If ERR_PTR is set then don't try to stat anything as it will cause 252 * a crash when we access fp. 253 */ 254 if (IS_ERR(fp)) { 255 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 256 "fp has IS_ERR() set.\n"); 257 goto skip_stat; 258 } 259 260 /* Log stats for FLOGI reject */ 261 if (fc_frame_payload_op(fp) == ELS_LS_RJT) 262 qedf->flogi_failed++; 263 else if (fc_frame_payload_op(fp) == ELS_LS_ACC) { 264 /* Set the source MAC we will use for FCoE traffic */ 265 qedf_set_data_src_addr(qedf, fp); 266 } 267 268 /* Complete flogi_compl so we can proceed to sending ADISCs */ 269 complete(&qedf->flogi_compl); 270 271 skip_stat: 272 /* Report response to libfc */ 273 fc_lport_flogi_resp(seq, fp, lport); 274 } 275 276 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did, 277 struct fc_frame *fp, unsigned int op, 278 void (*resp)(struct fc_seq *, 279 struct fc_frame *, 280 void *), 281 void *arg, u32 timeout) 282 { 283 struct qedf_ctx *qedf = lport_priv(lport); 284 285 /* 286 * Intercept FLOGI for statistic purposes. Note we use the resp 287 * callback to tell if this is really a flogi. 288 */ 289 if (resp == fc_lport_flogi_resp) { 290 qedf->flogi_cnt++; 291 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp, 292 arg, timeout); 293 } 294 295 return fc_elsct_send(lport, did, fp, op, resp, arg, timeout); 296 } 297 298 int qedf_send_flogi(struct qedf_ctx *qedf) 299 { 300 struct fc_lport *lport; 301 struct fc_frame *fp; 302 303 lport = qedf->lport; 304 305 if (!lport->tt.elsct_send) 306 return -EINVAL; 307 308 fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); 309 if (!fp) { 310 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n"); 311 return -ENOMEM; 312 } 313 314 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 315 "Sending FLOGI to reestablish session with switch.\n"); 316 lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, 317 ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov); 318 319 init_completion(&qedf->flogi_compl); 320 321 return 0; 322 } 323 324 struct qedf_tmp_rdata_item { 325 struct fc_rport_priv *rdata; 326 struct list_head list; 327 }; 328 329 /* 330 * This function is called if link_down_tmo is in use. If we get a link up and 331 * link_down_tmo has not expired then use just FLOGI/ADISC to recover our 332 * sessions with targets. Otherwise, just call fcoe_ctlr_link_up(). 333 */ 334 static void qedf_link_recovery(struct work_struct *work) 335 { 336 struct qedf_ctx *qedf = 337 container_of(work, struct qedf_ctx, link_recovery.work); 338 struct qedf_rport *fcport; 339 struct fc_rport_priv *rdata; 340 struct qedf_tmp_rdata_item *rdata_item, *tmp_rdata_item; 341 bool rc; 342 int retries = 30; 343 int rval, i; 344 struct list_head rdata_login_list; 345 346 INIT_LIST_HEAD(&rdata_login_list); 347 348 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 349 "Link down tmo did not expire.\n"); 350 351 /* 352 * Essentially reset the fcoe_ctlr here without affecting the state 353 * of the libfc structs. 354 */ 355 qedf->ctlr.state = FIP_ST_LINK_WAIT; 356 fcoe_ctlr_link_down(&qedf->ctlr); 357 358 /* 359 * Bring the link up before we send the fipvlan request so libfcoe 360 * can select a new fcf in parallel 361 */ 362 fcoe_ctlr_link_up(&qedf->ctlr); 363 364 /* Since the link when down and up to verify which vlan we're on */ 365 qedf->fipvlan_retries = qedf_fipvlan_retries; 366 rc = qedf_initiate_fipvlan_req(qedf); 367 /* If getting the VLAN fails, set the VLAN to the fallback one */ 368 if (!rc) 369 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 370 371 /* 372 * We need to wait for an FCF to be selected due to the 373 * fcoe_ctlr_link_up other the FLOGI will be rejected. 374 */ 375 while (retries > 0) { 376 if (qedf->ctlr.sel_fcf) { 377 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 378 "FCF reselected, proceeding with FLOGI.\n"); 379 break; 380 } 381 msleep(500); 382 retries--; 383 } 384 385 if (retries < 1) { 386 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for " 387 "FCF selection.\n"); 388 return; 389 } 390 391 rval = qedf_send_flogi(qedf); 392 if (rval) 393 return; 394 395 /* Wait for FLOGI completion before proceeding with sending ADISCs */ 396 i = wait_for_completion_timeout(&qedf->flogi_compl, 397 qedf->lport->r_a_tov); 398 if (i == 0) { 399 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n"); 400 return; 401 } 402 403 /* 404 * Call lport->tt.rport_login which will cause libfc to send an 405 * ADISC since the rport is in state ready. 406 */ 407 rcu_read_lock(); 408 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 409 rdata = fcport->rdata; 410 if (rdata == NULL) 411 continue; 412 rdata_item = kzalloc(sizeof(struct qedf_tmp_rdata_item), 413 GFP_ATOMIC); 414 if (!rdata_item) 415 continue; 416 if (kref_get_unless_zero(&rdata->kref)) { 417 rdata_item->rdata = rdata; 418 list_add(&rdata_item->list, &rdata_login_list); 419 } else 420 kfree(rdata_item); 421 } 422 rcu_read_unlock(); 423 /* 424 * Do the fc_rport_login outside of the rcu lock so we don't take a 425 * mutex in an atomic context. 426 */ 427 list_for_each_entry_safe(rdata_item, tmp_rdata_item, &rdata_login_list, 428 list) { 429 list_del(&rdata_item->list); 430 fc_rport_login(rdata_item->rdata); 431 kref_put(&rdata_item->rdata->kref, fc_rport_destroy); 432 kfree(rdata_item); 433 } 434 } 435 436 static void qedf_update_link_speed(struct qedf_ctx *qedf, 437 struct qed_link_output *link) 438 { 439 struct fc_lport *lport = qedf->lport; 440 441 lport->link_speed = FC_PORTSPEED_UNKNOWN; 442 lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN; 443 444 /* Set fc_host link speed */ 445 switch (link->speed) { 446 case 10000: 447 lport->link_speed = FC_PORTSPEED_10GBIT; 448 break; 449 case 25000: 450 lport->link_speed = FC_PORTSPEED_25GBIT; 451 break; 452 case 40000: 453 lport->link_speed = FC_PORTSPEED_40GBIT; 454 break; 455 case 50000: 456 lport->link_speed = FC_PORTSPEED_50GBIT; 457 break; 458 case 100000: 459 lport->link_speed = FC_PORTSPEED_100GBIT; 460 break; 461 default: 462 lport->link_speed = FC_PORTSPEED_UNKNOWN; 463 break; 464 } 465 466 /* 467 * Set supported link speed by querying the supported 468 * capabilities of the link. 469 */ 470 if (link->supported_caps & SUPPORTED_10000baseKR_Full) 471 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT; 472 if (link->supported_caps & SUPPORTED_25000baseKR_Full) 473 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT; 474 if (link->supported_caps & SUPPORTED_40000baseLR4_Full) 475 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT; 476 if (link->supported_caps & SUPPORTED_50000baseKR2_Full) 477 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT; 478 if (link->supported_caps & SUPPORTED_100000baseKR4_Full) 479 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT; 480 fc_host_supported_speeds(lport->host) = lport->link_supported_speeds; 481 } 482 483 static void qedf_link_update(void *dev, struct qed_link_output *link) 484 { 485 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 486 487 if (link->link_up) { 488 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 489 QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC, 490 "Ignoring link up event as link is already up.\n"); 491 return; 492 } 493 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n", 494 link->speed / 1000); 495 496 /* Cancel any pending link down work */ 497 cancel_delayed_work(&qedf->link_update); 498 499 atomic_set(&qedf->link_state, QEDF_LINK_UP); 500 qedf_update_link_speed(qedf, link); 501 502 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE || 503 qedf_dcbx_no_wait) { 504 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 505 "DCBx done.\n"); 506 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 507 queue_delayed_work(qedf->link_update_wq, 508 &qedf->link_recovery, 0); 509 else 510 queue_delayed_work(qedf->link_update_wq, 511 &qedf->link_update, 0); 512 atomic_set(&qedf->link_down_tmo_valid, 0); 513 } 514 515 } else { 516 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n"); 517 518 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 519 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 520 /* 521 * Flag that we're waiting for the link to come back up before 522 * informing the fcoe layer of the event. 523 */ 524 if (qedf_link_down_tmo > 0) { 525 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 526 "Starting link down tmo.\n"); 527 atomic_set(&qedf->link_down_tmo_valid, 1); 528 } 529 qedf->vlan_id = 0; 530 qedf_update_link_speed(qedf, link); 531 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 532 qedf_link_down_tmo * HZ); 533 } 534 } 535 536 537 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type) 538 { 539 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 540 u8 tmp_prio; 541 542 QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe " 543 "prio=%d.\n", get->operational.valid, get->operational.enabled, 544 get->operational.app_prio.fcoe); 545 546 if (get->operational.enabled && get->operational.valid) { 547 /* If DCBX was already negotiated on link up then just exit */ 548 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) { 549 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 550 "DCBX already set on link up.\n"); 551 return; 552 } 553 554 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE); 555 556 /* 557 * Set the 8021q priority in the following manner: 558 * 559 * 1. If a modparam is set use that 560 * 2. If the value is not between 0..7 use the default 561 * 3. Use the priority we get from the DCBX app tag 562 */ 563 tmp_prio = get->operational.app_prio.fcoe; 564 if (qedf_default_prio > -1) 565 qedf->prio = qedf_default_prio; 566 else if (tmp_prio < 0 || tmp_prio > 7) { 567 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 568 "FIP/FCoE prio %d out of range, setting to %d.\n", 569 tmp_prio, QEDF_DEFAULT_PRIO); 570 qedf->prio = QEDF_DEFAULT_PRIO; 571 } else 572 qedf->prio = tmp_prio; 573 574 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP && 575 !qedf_dcbx_no_wait) { 576 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 577 queue_delayed_work(qedf->link_update_wq, 578 &qedf->link_recovery, 0); 579 else 580 queue_delayed_work(qedf->link_update_wq, 581 &qedf->link_update, 0); 582 atomic_set(&qedf->link_down_tmo_valid, 0); 583 } 584 } 585 586 } 587 588 static u32 qedf_get_login_failures(void *cookie) 589 { 590 struct qedf_ctx *qedf; 591 592 qedf = (struct qedf_ctx *)cookie; 593 return qedf->flogi_failed; 594 } 595 596 static struct qed_fcoe_cb_ops qedf_cb_ops = { 597 { 598 .link_update = qedf_link_update, 599 .dcbx_aen = qedf_dcbx_handler, 600 .get_generic_tlv_data = qedf_get_generic_tlv_data, 601 .get_protocol_tlv_data = qedf_get_protocol_tlv_data, 602 } 603 }; 604 605 /* 606 * Various transport templates. 607 */ 608 609 static struct scsi_transport_template *qedf_fc_transport_template; 610 static struct scsi_transport_template *qedf_fc_vport_transport_template; 611 612 /* 613 * SCSI EH handlers 614 */ 615 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd) 616 { 617 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); 618 struct fc_rport_libfc_priv *rp = rport->dd_data; 619 struct qedf_rport *fcport; 620 struct fc_lport *lport; 621 struct qedf_ctx *qedf; 622 struct qedf_ioreq *io_req; 623 int rc = FAILED; 624 int rval; 625 626 if (fc_remote_port_chkready(rport)) { 627 QEDF_ERR(NULL, "rport not ready\n"); 628 goto out; 629 } 630 631 lport = shost_priv(sc_cmd->device->host); 632 qedf = (struct qedf_ctx *)lport_priv(lport); 633 634 if ((lport->state != LPORT_ST_READY) || !(lport->link_up)) { 635 QEDF_ERR(&(qedf->dbg_ctx), "link not ready.\n"); 636 goto out; 637 } 638 639 fcport = (struct qedf_rport *)&rp[1]; 640 641 io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr; 642 if (!io_req) { 643 QEDF_ERR(&(qedf->dbg_ctx), "io_req is NULL.\n"); 644 rc = SUCCESS; 645 goto out; 646 } 647 648 QEDF_ERR(&(qedf->dbg_ctx), "Aborting io_req sc_cmd=%p xid=0x%x " 649 "fp_idx=%d.\n", sc_cmd, io_req->xid, io_req->fp_idx); 650 651 if (qedf->stop_io_on_error) { 652 qedf_stop_all_io(qedf); 653 rc = SUCCESS; 654 goto out; 655 } 656 657 init_completion(&io_req->abts_done); 658 rval = qedf_initiate_abts(io_req, true); 659 if (rval) { 660 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n"); 661 goto out; 662 } 663 664 wait_for_completion(&io_req->abts_done); 665 666 if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS || 667 io_req->event == QEDF_IOREQ_EV_ABORT_FAILED || 668 io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) { 669 /* 670 * If we get a reponse to the abort this is success from 671 * the perspective that all references to the command have 672 * been removed from the driver and firmware 673 */ 674 rc = SUCCESS; 675 } else { 676 /* If the abort and cleanup failed then return a failure */ 677 rc = FAILED; 678 } 679 680 if (rc == SUCCESS) 681 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n", 682 io_req->xid); 683 else 684 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n", 685 io_req->xid); 686 687 out: 688 return rc; 689 } 690 691 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd) 692 { 693 QEDF_ERR(NULL, "TARGET RESET Issued..."); 694 return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET); 695 } 696 697 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd) 698 { 699 QEDF_ERR(NULL, "LUN RESET Issued...\n"); 700 return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET); 701 } 702 703 void qedf_wait_for_upload(struct qedf_ctx *qedf) 704 { 705 while (1) { 706 if (atomic_read(&qedf->num_offloads)) 707 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 708 "Waiting for all uploads to complete.\n"); 709 else 710 break; 711 msleep(500); 712 } 713 } 714 715 /* Performs soft reset of qedf_ctx by simulating a link down/up */ 716 static void qedf_ctx_soft_reset(struct fc_lport *lport) 717 { 718 struct qedf_ctx *qedf; 719 720 if (lport->vport) { 721 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n"); 722 return; 723 } 724 725 qedf = lport_priv(lport); 726 727 /* For host reset, essentially do a soft link up/down */ 728 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 729 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 730 0); 731 qedf_wait_for_upload(qedf); 732 atomic_set(&qedf->link_state, QEDF_LINK_UP); 733 qedf->vlan_id = 0; 734 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 735 0); 736 } 737 738 /* Reset the host by gracefully logging out and then logging back in */ 739 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd) 740 { 741 struct fc_lport *lport; 742 struct qedf_ctx *qedf; 743 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); 744 struct fc_rport_libfc_priv *rp = rport->dd_data; 745 struct qedf_rport *fcport = (struct qedf_rport *)&rp[1]; 746 int rval; 747 748 rval = fc_remote_port_chkready(rport); 749 750 if (rval) { 751 QEDF_ERR(NULL, "device_reset rport not ready\n"); 752 return FAILED; 753 } 754 755 if (fcport == NULL) { 756 QEDF_ERR(NULL, "device_reset: rport is NULL\n"); 757 return FAILED; 758 } 759 760 lport = shost_priv(sc_cmd->device->host); 761 qedf = lport_priv(lport); 762 763 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN || 764 test_bit(QEDF_UNLOADING, &qedf->flags)) 765 return FAILED; 766 767 QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued..."); 768 769 qedf_ctx_soft_reset(lport); 770 771 return SUCCESS; 772 } 773 774 static int qedf_slave_configure(struct scsi_device *sdev) 775 { 776 if (qedf_queue_depth) { 777 scsi_change_queue_depth(sdev, qedf_queue_depth); 778 } 779 780 return 0; 781 } 782 783 static struct scsi_host_template qedf_host_template = { 784 .module = THIS_MODULE, 785 .name = QEDF_MODULE_NAME, 786 .this_id = -1, 787 .cmd_per_lun = 32, 788 .max_sectors = 0xffff, 789 .queuecommand = qedf_queuecommand, 790 .shost_attrs = qedf_host_attrs, 791 .eh_abort_handler = qedf_eh_abort, 792 .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */ 793 .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */ 794 .eh_host_reset_handler = qedf_eh_host_reset, 795 .slave_configure = qedf_slave_configure, 796 .dma_boundary = QED_HW_DMA_BOUNDARY, 797 .sg_tablesize = QEDF_MAX_BDS_PER_CMD, 798 .can_queue = FCOE_PARAMS_NUM_TASKS, 799 .change_queue_depth = scsi_change_queue_depth, 800 }; 801 802 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen) 803 { 804 int rc; 805 806 spin_lock(&qedf_global_lock); 807 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global); 808 spin_unlock(&qedf_global_lock); 809 810 return rc; 811 } 812 813 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id) 814 { 815 struct qedf_rport *fcport; 816 struct fc_rport_priv *rdata; 817 818 rcu_read_lock(); 819 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 820 rdata = fcport->rdata; 821 if (rdata == NULL) 822 continue; 823 if (rdata->ids.port_id == port_id) { 824 rcu_read_unlock(); 825 return fcport; 826 } 827 } 828 rcu_read_unlock(); 829 830 /* Return NULL to caller to let them know fcport was not found */ 831 return NULL; 832 } 833 834 /* Transmits an ELS frame over an offloaded session */ 835 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp) 836 { 837 struct fc_frame_header *fh; 838 int rc = 0; 839 840 fh = fc_frame_header_get(fp); 841 if ((fh->fh_type == FC_TYPE_ELS) && 842 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 843 switch (fc_frame_payload_op(fp)) { 844 case ELS_ADISC: 845 qedf_send_adisc(fcport, fp); 846 rc = 1; 847 break; 848 } 849 } 850 851 return rc; 852 } 853 854 /** 855 * qedf_xmit - qedf FCoE frame transmit function 856 * 857 */ 858 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp) 859 { 860 struct fc_lport *base_lport; 861 struct qedf_ctx *qedf; 862 struct ethhdr *eh; 863 struct fcoe_crc_eof *cp; 864 struct sk_buff *skb; 865 struct fc_frame_header *fh; 866 struct fcoe_hdr *hp; 867 u8 sof, eof; 868 u32 crc; 869 unsigned int hlen, tlen, elen; 870 int wlen; 871 struct fc_stats *stats; 872 struct fc_lport *tmp_lport; 873 struct fc_lport *vn_port = NULL; 874 struct qedf_rport *fcport; 875 int rc; 876 u16 vlan_tci = 0; 877 878 qedf = (struct qedf_ctx *)lport_priv(lport); 879 880 fh = fc_frame_header_get(fp); 881 skb = fp_skb(fp); 882 883 /* Filter out traffic to other NPIV ports on the same host */ 884 if (lport->vport) 885 base_lport = shost_priv(vport_to_shost(lport->vport)); 886 else 887 base_lport = lport; 888 889 /* Flag if the destination is the base port */ 890 if (base_lport->port_id == ntoh24(fh->fh_d_id)) { 891 vn_port = base_lport; 892 } else { 893 /* Got through the list of vports attached to the base_lport 894 * and see if we have a match with the destination address. 895 */ 896 list_for_each_entry(tmp_lport, &base_lport->vports, list) { 897 if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) { 898 vn_port = tmp_lport; 899 break; 900 } 901 } 902 } 903 if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) { 904 struct fc_rport_priv *rdata = NULL; 905 906 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 907 "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id)); 908 kfree_skb(skb); 909 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id)); 910 if (rdata) 911 rdata->retries = lport->max_rport_retry_count; 912 return -EINVAL; 913 } 914 /* End NPIV filtering */ 915 916 if (!qedf->ctlr.sel_fcf) { 917 kfree_skb(skb); 918 return 0; 919 } 920 921 if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) { 922 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n"); 923 kfree_skb(skb); 924 return 0; 925 } 926 927 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 928 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n"); 929 kfree_skb(skb); 930 return 0; 931 } 932 933 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 934 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb)) 935 return 0; 936 } 937 938 /* Check to see if this needs to be sent on an offloaded session */ 939 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 940 941 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 942 rc = qedf_xmit_l2_frame(fcport, fp); 943 /* 944 * If the frame was successfully sent over the middle path 945 * then do not try to also send it over the LL2 path 946 */ 947 if (rc) 948 return 0; 949 } 950 951 sof = fr_sof(fp); 952 eof = fr_eof(fp); 953 954 elen = sizeof(struct ethhdr); 955 hlen = sizeof(struct fcoe_hdr); 956 tlen = sizeof(struct fcoe_crc_eof); 957 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; 958 959 skb->ip_summed = CHECKSUM_NONE; 960 crc = fcoe_fc_crc(fp); 961 962 /* copy port crc and eof to the skb buff */ 963 if (skb_is_nonlinear(skb)) { 964 skb_frag_t *frag; 965 966 if (qedf_get_paged_crc_eof(skb, tlen)) { 967 kfree_skb(skb); 968 return -ENOMEM; 969 } 970 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; 971 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset; 972 } else { 973 cp = skb_put(skb, tlen); 974 } 975 976 memset(cp, 0, sizeof(*cp)); 977 cp->fcoe_eof = eof; 978 cp->fcoe_crc32 = cpu_to_le32(~crc); 979 if (skb_is_nonlinear(skb)) { 980 kunmap_atomic(cp); 981 cp = NULL; 982 } 983 984 985 /* adjust skb network/transport offsets to match mac/fcoe/port */ 986 skb_push(skb, elen + hlen); 987 skb_reset_mac_header(skb); 988 skb_reset_network_header(skb); 989 skb->mac_len = elen; 990 skb->protocol = htons(ETH_P_FCOE); 991 992 /* 993 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN 994 * for FIP/FCoE traffic. 995 */ 996 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id); 997 998 /* fill up mac and fcoe headers */ 999 eh = eth_hdr(skb); 1000 eh->h_proto = htons(ETH_P_FCOE); 1001 if (qedf->ctlr.map_dest) 1002 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); 1003 else 1004 /* insert GW address */ 1005 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr); 1006 1007 /* Set the source MAC address */ 1008 ether_addr_copy(eh->h_source, qedf->data_src_addr); 1009 1010 hp = (struct fcoe_hdr *)(eh + 1); 1011 memset(hp, 0, sizeof(*hp)); 1012 if (FC_FCOE_VER) 1013 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); 1014 hp->fcoe_sof = sof; 1015 1016 /*update tx stats */ 1017 stats = per_cpu_ptr(lport->stats, get_cpu()); 1018 stats->TxFrames++; 1019 stats->TxWords += wlen; 1020 put_cpu(); 1021 1022 /* Get VLAN ID from skb for printing purposes */ 1023 __vlan_hwaccel_get_tag(skb, &vlan_tci); 1024 1025 /* send down to lld */ 1026 fr_dev(fp) = lport; 1027 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: " 1028 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n", 1029 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type, 1030 vlan_tci); 1031 if (qedf_dump_frames) 1032 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 1033 1, skb->data, skb->len, false); 1034 qed_ops->ll2->start_xmit(qedf->cdev, skb, 0); 1035 1036 return 0; 1037 } 1038 1039 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1040 { 1041 int rval = 0; 1042 u32 *pbl; 1043 dma_addr_t page; 1044 int num_pages; 1045 1046 /* Calculate appropriate queue and PBL sizes */ 1047 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 1048 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE); 1049 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) * 1050 sizeof(void *); 1051 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE; 1052 1053 fcport->sq = dma_zalloc_coherent(&qedf->pdev->dev, 1054 fcport->sq_mem_size, &fcport->sq_dma, GFP_KERNEL); 1055 if (!fcport->sq) { 1056 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n"); 1057 rval = 1; 1058 goto out; 1059 } 1060 1061 fcport->sq_pbl = dma_zalloc_coherent(&qedf->pdev->dev, 1062 fcport->sq_pbl_size, &fcport->sq_pbl_dma, GFP_KERNEL); 1063 if (!fcport->sq_pbl) { 1064 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n"); 1065 rval = 1; 1066 goto out_free_sq; 1067 } 1068 1069 /* Create PBL */ 1070 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE; 1071 page = fcport->sq_dma; 1072 pbl = (u32 *)fcport->sq_pbl; 1073 1074 while (num_pages--) { 1075 *pbl = U64_LO(page); 1076 pbl++; 1077 *pbl = U64_HI(page); 1078 pbl++; 1079 page += QEDF_PAGE_SIZE; 1080 } 1081 1082 return rval; 1083 1084 out_free_sq: 1085 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq, 1086 fcport->sq_dma); 1087 out: 1088 return rval; 1089 } 1090 1091 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1092 { 1093 if (fcport->sq_pbl) 1094 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size, 1095 fcport->sq_pbl, fcport->sq_pbl_dma); 1096 if (fcport->sq) 1097 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1098 fcport->sq, fcport->sq_dma); 1099 } 1100 1101 static int qedf_offload_connection(struct qedf_ctx *qedf, 1102 struct qedf_rport *fcport) 1103 { 1104 struct qed_fcoe_params_offload conn_info; 1105 u32 port_id; 1106 int rval; 1107 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe)); 1108 1109 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection " 1110 "portid=%06x.\n", fcport->rdata->ids.port_id); 1111 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle, 1112 &fcport->fw_cid, &fcport->p_doorbell); 1113 if (rval) { 1114 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection " 1115 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1116 rval = 1; /* For some reason qed returns 0 on failure here */ 1117 goto out; 1118 } 1119 1120 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x " 1121 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id, 1122 fcport->fw_cid, fcport->handle); 1123 1124 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload)); 1125 1126 /* Fill in the offload connection info */ 1127 conn_info.sq_pbl_addr = fcport->sq_pbl_dma; 1128 1129 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl); 1130 conn_info.sq_next_page_addr = 1131 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8)); 1132 1133 /* Need to use our FCoE MAC for the offload session */ 1134 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr); 1135 1136 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr); 1137 1138 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size; 1139 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20; 1140 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */ 1141 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size; 1142 1143 /* Set VLAN data */ 1144 conn_info.vlan_tag = qedf->vlan_id << 1145 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT; 1146 conn_info.vlan_tag |= 1147 qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT; 1148 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK << 1149 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT); 1150 1151 /* Set host port source id */ 1152 port_id = fc_host_port_id(qedf->lport->host); 1153 fcport->sid = port_id; 1154 conn_info.s_id.addr_hi = (port_id & 0x000000FF); 1155 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1156 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1157 1158 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq; 1159 1160 /* Set remote port destination id */ 1161 port_id = fcport->rdata->rport->port_id; 1162 conn_info.d_id.addr_hi = (port_id & 0x000000FF); 1163 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1164 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1165 1166 conn_info.def_q_idx = 0; /* Default index for send queue? */ 1167 1168 /* Set FC-TAPE specific flags if needed */ 1169 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) { 1170 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, 1171 "Enable CONF, REC for portid=%06x.\n", 1172 fcport->rdata->ids.port_id); 1173 conn_info.flags |= 1 << 1174 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT; 1175 conn_info.flags |= 1176 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) << 1177 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT; 1178 } 1179 1180 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info); 1181 if (rval) { 1182 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection " 1183 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1184 goto out_free_conn; 1185 } else 1186 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload " 1187 "succeeded portid=%06x total_sqe=%d.\n", 1188 fcport->rdata->ids.port_id, total_sqe); 1189 1190 spin_lock_init(&fcport->rport_lock); 1191 atomic_set(&fcport->free_sqes, total_sqe); 1192 return 0; 1193 out_free_conn: 1194 qed_ops->release_conn(qedf->cdev, fcport->handle); 1195 out: 1196 return rval; 1197 } 1198 1199 #define QEDF_TERM_BUFF_SIZE 10 1200 static void qedf_upload_connection(struct qedf_ctx *qedf, 1201 struct qedf_rport *fcport) 1202 { 1203 void *term_params; 1204 dma_addr_t term_params_dma; 1205 1206 /* Term params needs to be a DMA coherent buffer as qed shared the 1207 * physical DMA address with the firmware. The buffer may be used in 1208 * the receive path so we may eventually have to move this. 1209 */ 1210 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, 1211 &term_params_dma, GFP_KERNEL); 1212 1213 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection " 1214 "port_id=%06x.\n", fcport->rdata->ids.port_id); 1215 1216 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma); 1217 qed_ops->release_conn(qedf->cdev, fcport->handle); 1218 1219 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params, 1220 term_params_dma); 1221 } 1222 1223 static void qedf_cleanup_fcport(struct qedf_ctx *qedf, 1224 struct qedf_rport *fcport) 1225 { 1226 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n", 1227 fcport->rdata->ids.port_id); 1228 1229 /* Flush any remaining i/o's before we upload the connection */ 1230 qedf_flush_active_ios(fcport, -1); 1231 1232 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) 1233 qedf_upload_connection(qedf, fcport); 1234 qedf_free_sq(qedf, fcport); 1235 fcport->rdata = NULL; 1236 fcport->qedf = NULL; 1237 } 1238 1239 /** 1240 * This event_callback is called after successful completion of libfc 1241 * initiated target login. qedf can proceed with initiating the session 1242 * establishment. 1243 */ 1244 static void qedf_rport_event_handler(struct fc_lport *lport, 1245 struct fc_rport_priv *rdata, 1246 enum fc_rport_event event) 1247 { 1248 struct qedf_ctx *qedf = lport_priv(lport); 1249 struct fc_rport *rport = rdata->rport; 1250 struct fc_rport_libfc_priv *rp; 1251 struct qedf_rport *fcport; 1252 u32 port_id; 1253 int rval; 1254 unsigned long flags; 1255 1256 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, " 1257 "port_id = 0x%x\n", event, rdata->ids.port_id); 1258 1259 switch (event) { 1260 case RPORT_EV_READY: 1261 if (!rport) { 1262 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n"); 1263 break; 1264 } 1265 1266 rp = rport->dd_data; 1267 fcport = (struct qedf_rport *)&rp[1]; 1268 fcport->qedf = qedf; 1269 1270 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) { 1271 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading " 1272 "portid=0x%x as max number of offloaded sessions " 1273 "reached.\n", rdata->ids.port_id); 1274 return; 1275 } 1276 1277 /* 1278 * Don't try to offload the session again. Can happen when we 1279 * get an ADISC 1280 */ 1281 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1282 QEDF_WARN(&(qedf->dbg_ctx), "Session already " 1283 "offloaded, portid=0x%x.\n", 1284 rdata->ids.port_id); 1285 return; 1286 } 1287 1288 if (rport->port_id == FC_FID_DIR_SERV) { 1289 /* 1290 * qedf_rport structure doesn't exist for 1291 * directory server. 1292 * We should not come here, as lport will 1293 * take care of fabric login 1294 */ 1295 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not " 1296 "exist for dir server port_id=%x\n", 1297 rdata->ids.port_id); 1298 break; 1299 } 1300 1301 if (rdata->spp_type != FC_TYPE_FCP) { 1302 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1303 "Not offloading since spp type isn't FCP\n"); 1304 break; 1305 } 1306 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1307 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1308 "Not FCP target so not offloading\n"); 1309 break; 1310 } 1311 1312 fcport->rdata = rdata; 1313 fcport->rport = rport; 1314 1315 rval = qedf_alloc_sq(qedf, fcport); 1316 if (rval) { 1317 qedf_cleanup_fcport(qedf, fcport); 1318 break; 1319 } 1320 1321 /* Set device type */ 1322 if (rdata->flags & FC_RP_FLAGS_RETRY && 1323 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET && 1324 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) { 1325 fcport->dev_type = QEDF_RPORT_TYPE_TAPE; 1326 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1327 "portid=%06x is a TAPE device.\n", 1328 rdata->ids.port_id); 1329 } else { 1330 fcport->dev_type = QEDF_RPORT_TYPE_DISK; 1331 } 1332 1333 rval = qedf_offload_connection(qedf, fcport); 1334 if (rval) { 1335 qedf_cleanup_fcport(qedf, fcport); 1336 break; 1337 } 1338 1339 /* Add fcport to list of qedf_ctx list of offloaded ports */ 1340 spin_lock_irqsave(&qedf->hba_lock, flags); 1341 list_add_rcu(&fcport->peers, &qedf->fcports); 1342 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1343 1344 /* 1345 * Set the session ready bit to let everyone know that this 1346 * connection is ready for I/O 1347 */ 1348 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags); 1349 atomic_inc(&qedf->num_offloads); 1350 1351 break; 1352 case RPORT_EV_LOGO: 1353 case RPORT_EV_FAILED: 1354 case RPORT_EV_STOP: 1355 port_id = rdata->ids.port_id; 1356 if (port_id == FC_FID_DIR_SERV) 1357 break; 1358 1359 if (!rport) { 1360 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1361 "port_id=%x - rport notcreated Yet!!\n", port_id); 1362 break; 1363 } 1364 rp = rport->dd_data; 1365 /* 1366 * Perform session upload. Note that rdata->peers is already 1367 * removed from disc->rports list before we get this event. 1368 */ 1369 fcport = (struct qedf_rport *)&rp[1]; 1370 1371 /* Only free this fcport if it is offloaded already */ 1372 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1373 set_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags); 1374 qedf_cleanup_fcport(qedf, fcport); 1375 1376 /* 1377 * Remove fcport to list of qedf_ctx list of offloaded 1378 * ports 1379 */ 1380 spin_lock_irqsave(&qedf->hba_lock, flags); 1381 list_del_rcu(&fcport->peers); 1382 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1383 1384 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1385 &fcport->flags); 1386 atomic_dec(&qedf->num_offloads); 1387 } 1388 1389 break; 1390 1391 case RPORT_EV_NONE: 1392 break; 1393 } 1394 } 1395 1396 static void qedf_abort_io(struct fc_lport *lport) 1397 { 1398 /* NO-OP but need to fill in the template */ 1399 } 1400 1401 static void qedf_fcp_cleanup(struct fc_lport *lport) 1402 { 1403 /* 1404 * NO-OP but need to fill in template to prevent a NULL 1405 * function pointer dereference during link down. I/Os 1406 * will be flushed when port is uploaded. 1407 */ 1408 } 1409 1410 static struct libfc_function_template qedf_lport_template = { 1411 .frame_send = qedf_xmit, 1412 .fcp_abort_io = qedf_abort_io, 1413 .fcp_cleanup = qedf_fcp_cleanup, 1414 .rport_event_callback = qedf_rport_event_handler, 1415 .elsct_send = qedf_elsct_send, 1416 }; 1417 1418 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf) 1419 { 1420 fcoe_ctlr_init(&qedf->ctlr, FIP_ST_AUTO); 1421 1422 qedf->ctlr.send = qedf_fip_send; 1423 qedf->ctlr.get_src_addr = qedf_get_src_mac; 1424 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac); 1425 } 1426 1427 static void qedf_setup_fdmi(struct qedf_ctx *qedf) 1428 { 1429 struct fc_lport *lport = qedf->lport; 1430 struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host); 1431 u8 buf[8]; 1432 int i, pos; 1433 1434 /* 1435 * fdmi_enabled needs to be set for libfc to execute FDMI registration. 1436 */ 1437 lport->fdmi_enabled = 1; 1438 1439 /* 1440 * Setup the necessary fc_host attributes to that will be used to fill 1441 * in the FDMI information. 1442 */ 1443 1444 /* Get the PCI-e Device Serial Number Capability */ 1445 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN); 1446 if (pos) { 1447 pos += 4; 1448 for (i = 0; i < 8; i++) 1449 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]); 1450 1451 snprintf(fc_host->serial_number, 1452 sizeof(fc_host->serial_number), 1453 "%02X%02X%02X%02X%02X%02X%02X%02X", 1454 buf[7], buf[6], buf[5], buf[4], 1455 buf[3], buf[2], buf[1], buf[0]); 1456 } else 1457 snprintf(fc_host->serial_number, 1458 sizeof(fc_host->serial_number), "Unknown"); 1459 1460 snprintf(fc_host->manufacturer, 1461 sizeof(fc_host->manufacturer), "%s", "Cavium Inc."); 1462 1463 snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000"); 1464 1465 snprintf(fc_host->model_description, sizeof(fc_host->model_description), 1466 "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller" 1467 "(FCoE)"); 1468 1469 snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version), 1470 "Rev %d", qedf->pdev->revision); 1471 1472 snprintf(fc_host->driver_version, sizeof(fc_host->driver_version), 1473 "%s", QEDF_VERSION); 1474 1475 snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version), 1476 "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION, 1477 FW_REVISION_VERSION, FW_ENGINEERING_VERSION); 1478 } 1479 1480 static int qedf_lport_setup(struct qedf_ctx *qedf) 1481 { 1482 struct fc_lport *lport = qedf->lport; 1483 1484 lport->link_up = 0; 1485 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1486 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1487 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1488 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1489 lport->boot_time = jiffies; 1490 lport->e_d_tov = 2 * 1000; 1491 lport->r_a_tov = 10 * 1000; 1492 1493 /* Set NPIV support */ 1494 lport->does_npiv = 1; 1495 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV; 1496 1497 fc_set_wwnn(lport, qedf->wwnn); 1498 fc_set_wwpn(lport, qedf->wwpn); 1499 1500 fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0); 1501 1502 /* Allocate the exchange manager */ 1503 fc_exch_mgr_alloc(lport, FC_CLASS_3, qedf->max_scsi_xid + 1, 1504 qedf->max_els_xid, NULL); 1505 1506 if (fc_lport_init_stats(lport)) 1507 return -ENOMEM; 1508 1509 /* Finish lport config */ 1510 fc_lport_config(lport); 1511 1512 /* Set max frame size */ 1513 fc_set_mfs(lport, QEDF_MFS); 1514 fc_host_maxframe_size(lport->host) = lport->mfs; 1515 1516 /* Set default dev_loss_tmo based on module parameter */ 1517 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo; 1518 1519 /* Set symbolic node name */ 1520 snprintf(fc_host_symbolic_name(lport->host), 256, 1521 "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION); 1522 1523 qedf_setup_fdmi(qedf); 1524 1525 return 0; 1526 } 1527 1528 /* 1529 * NPIV functions 1530 */ 1531 1532 static int qedf_vport_libfc_config(struct fc_vport *vport, 1533 struct fc_lport *lport) 1534 { 1535 lport->link_up = 0; 1536 lport->qfull = 0; 1537 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1538 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1539 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1540 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1541 lport->boot_time = jiffies; 1542 lport->e_d_tov = 2 * 1000; 1543 lport->r_a_tov = 10 * 1000; 1544 lport->does_npiv = 1; /* Temporary until we add NPIV support */ 1545 1546 /* Allocate stats for vport */ 1547 if (fc_lport_init_stats(lport)) 1548 return -ENOMEM; 1549 1550 /* Finish lport config */ 1551 fc_lport_config(lport); 1552 1553 /* offload related configuration */ 1554 lport->crc_offload = 0; 1555 lport->seq_offload = 0; 1556 lport->lro_enabled = 0; 1557 lport->lro_xid = 0; 1558 lport->lso_max = 0; 1559 1560 return 0; 1561 } 1562 1563 static int qedf_vport_create(struct fc_vport *vport, bool disabled) 1564 { 1565 struct Scsi_Host *shost = vport_to_shost(vport); 1566 struct fc_lport *n_port = shost_priv(shost); 1567 struct fc_lport *vn_port; 1568 struct qedf_ctx *base_qedf = lport_priv(n_port); 1569 struct qedf_ctx *vport_qedf; 1570 1571 char buf[32]; 1572 int rc = 0; 1573 1574 rc = fcoe_validate_vport_create(vport); 1575 if (rc) { 1576 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1577 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, " 1578 "WWPN (0x%s) already exists.\n", buf); 1579 goto err1; 1580 } 1581 1582 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) { 1583 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport " 1584 "because link is not up.\n"); 1585 rc = -EIO; 1586 goto err1; 1587 } 1588 1589 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx)); 1590 if (!vn_port) { 1591 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport " 1592 "for vport.\n"); 1593 rc = -ENOMEM; 1594 goto err1; 1595 } 1596 1597 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1598 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n", 1599 buf); 1600 1601 /* Copy some fields from base_qedf */ 1602 vport_qedf = lport_priv(vn_port); 1603 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx)); 1604 1605 /* Set qedf data specific to this vport */ 1606 vport_qedf->lport = vn_port; 1607 /* Use same hba_lock as base_qedf */ 1608 vport_qedf->hba_lock = base_qedf->hba_lock; 1609 vport_qedf->pdev = base_qedf->pdev; 1610 vport_qedf->cmd_mgr = base_qedf->cmd_mgr; 1611 init_completion(&vport_qedf->flogi_compl); 1612 INIT_LIST_HEAD(&vport_qedf->fcports); 1613 1614 rc = qedf_vport_libfc_config(vport, vn_port); 1615 if (rc) { 1616 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory " 1617 "for lport stats.\n"); 1618 goto err2; 1619 } 1620 1621 fc_set_wwnn(vn_port, vport->node_name); 1622 fc_set_wwpn(vn_port, vport->port_name); 1623 vport_qedf->wwnn = vn_port->wwnn; 1624 vport_qedf->wwpn = vn_port->wwpn; 1625 1626 vn_port->host->transportt = qedf_fc_vport_transport_template; 1627 vn_port->host->can_queue = QEDF_MAX_ELS_XID; 1628 vn_port->host->max_lun = qedf_max_lun; 1629 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD; 1630 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN; 1631 1632 rc = scsi_add_host(vn_port->host, &vport->dev); 1633 if (rc) { 1634 QEDF_WARN(&(base_qedf->dbg_ctx), "Error adding Scsi_Host.\n"); 1635 goto err2; 1636 } 1637 1638 /* Set default dev_loss_tmo based on module parameter */ 1639 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo; 1640 1641 /* Init libfc stuffs */ 1642 memcpy(&vn_port->tt, &qedf_lport_template, 1643 sizeof(qedf_lport_template)); 1644 fc_exch_init(vn_port); 1645 fc_elsct_init(vn_port); 1646 fc_lport_init(vn_port); 1647 fc_disc_init(vn_port); 1648 fc_disc_config(vn_port, vn_port); 1649 1650 1651 /* Allocate the exchange manager */ 1652 shost = vport_to_shost(vport); 1653 n_port = shost_priv(shost); 1654 fc_exch_mgr_list_clone(n_port, vn_port); 1655 1656 /* Set max frame size */ 1657 fc_set_mfs(vn_port, QEDF_MFS); 1658 1659 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN; 1660 1661 if (disabled) { 1662 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1663 } else { 1664 vn_port->boot_time = jiffies; 1665 fc_fabric_login(vn_port); 1666 fc_vport_setlink(vn_port); 1667 } 1668 1669 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n", 1670 vn_port); 1671 1672 /* Set up debug context for vport */ 1673 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no; 1674 vport_qedf->dbg_ctx.pdev = base_qedf->pdev; 1675 1676 err2: 1677 scsi_host_put(vn_port->host); 1678 err1: 1679 return rc; 1680 } 1681 1682 static int qedf_vport_destroy(struct fc_vport *vport) 1683 { 1684 struct Scsi_Host *shost = vport_to_shost(vport); 1685 struct fc_lport *n_port = shost_priv(shost); 1686 struct fc_lport *vn_port = vport->dd_data; 1687 struct qedf_ctx *qedf = lport_priv(vn_port); 1688 1689 if (!qedf) { 1690 QEDF_ERR(NULL, "qedf is NULL.\n"); 1691 goto out; 1692 } 1693 1694 /* Set unloading bit on vport qedf_ctx to prevent more I/O */ 1695 set_bit(QEDF_UNLOADING, &qedf->flags); 1696 1697 mutex_lock(&n_port->lp_mutex); 1698 list_del(&vn_port->list); 1699 mutex_unlock(&n_port->lp_mutex); 1700 1701 fc_fabric_logoff(vn_port); 1702 fc_lport_destroy(vn_port); 1703 1704 /* Detach from scsi-ml */ 1705 fc_remove_host(vn_port->host); 1706 scsi_remove_host(vn_port->host); 1707 1708 /* 1709 * Only try to release the exchange manager if the vn_port 1710 * configuration is complete. 1711 */ 1712 if (vn_port->state == LPORT_ST_READY) 1713 fc_exch_mgr_free(vn_port); 1714 1715 /* Free memory used by statistical counters */ 1716 fc_lport_free_stats(vn_port); 1717 1718 /* Release Scsi_Host */ 1719 if (vn_port->host) 1720 scsi_host_put(vn_port->host); 1721 1722 out: 1723 return 0; 1724 } 1725 1726 static int qedf_vport_disable(struct fc_vport *vport, bool disable) 1727 { 1728 struct fc_lport *lport = vport->dd_data; 1729 1730 if (disable) { 1731 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1732 fc_fabric_logoff(lport); 1733 } else { 1734 lport->boot_time = jiffies; 1735 fc_fabric_login(lport); 1736 fc_vport_setlink(lport); 1737 } 1738 return 0; 1739 } 1740 1741 /* 1742 * During removal we need to wait for all the vports associated with a port 1743 * to be destroyed so we avoid a race condition where libfc is still trying 1744 * to reap vports while the driver remove function has already reaped the 1745 * driver contexts associated with the physical port. 1746 */ 1747 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf) 1748 { 1749 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host); 1750 1751 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 1752 "Entered.\n"); 1753 while (fc_host->npiv_vports_inuse > 0) { 1754 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 1755 "Waiting for all vports to be reaped.\n"); 1756 msleep(1000); 1757 } 1758 } 1759 1760 /** 1761 * qedf_fcoe_reset - Resets the fcoe 1762 * 1763 * @shost: shost the reset is from 1764 * 1765 * Returns: always 0 1766 */ 1767 static int qedf_fcoe_reset(struct Scsi_Host *shost) 1768 { 1769 struct fc_lport *lport = shost_priv(shost); 1770 1771 qedf_ctx_soft_reset(lport); 1772 return 0; 1773 } 1774 1775 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host 1776 *shost) 1777 { 1778 struct fc_host_statistics *qedf_stats; 1779 struct fc_lport *lport = shost_priv(shost); 1780 struct qedf_ctx *qedf = lport_priv(lport); 1781 struct qed_fcoe_stats *fw_fcoe_stats; 1782 1783 qedf_stats = fc_get_host_stats(shost); 1784 1785 /* We don't collect offload stats for specific NPIV ports */ 1786 if (lport->vport) 1787 goto out; 1788 1789 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL); 1790 if (!fw_fcoe_stats) { 1791 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for " 1792 "fw_fcoe_stats.\n"); 1793 goto out; 1794 } 1795 1796 mutex_lock(&qedf->stats_mutex); 1797 1798 /* Query firmware for offload stats */ 1799 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats); 1800 1801 /* 1802 * The expectation is that we add our offload stats to the stats 1803 * being maintained by libfc each time the fc_get_host_status callback 1804 * is invoked. The additions are not carried over for each call to 1805 * the fc_get_host_stats callback. 1806 */ 1807 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt + 1808 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt + 1809 fw_fcoe_stats->fcoe_tx_other_pkt_cnt; 1810 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt + 1811 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt + 1812 fw_fcoe_stats->fcoe_rx_other_pkt_cnt; 1813 qedf_stats->fcp_input_megabytes += 1814 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000); 1815 qedf_stats->fcp_output_megabytes += 1816 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000); 1817 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4; 1818 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4; 1819 qedf_stats->invalid_crc_count += 1820 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt; 1821 qedf_stats->dumped_frames = 1822 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 1823 qedf_stats->error_frames += 1824 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 1825 qedf_stats->fcp_input_requests += qedf->input_requests; 1826 qedf_stats->fcp_output_requests += qedf->output_requests; 1827 qedf_stats->fcp_control_requests += qedf->control_requests; 1828 qedf_stats->fcp_packet_aborts += qedf->packet_aborts; 1829 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures; 1830 1831 mutex_unlock(&qedf->stats_mutex); 1832 kfree(fw_fcoe_stats); 1833 out: 1834 return qedf_stats; 1835 } 1836 1837 static struct fc_function_template qedf_fc_transport_fn = { 1838 .show_host_node_name = 1, 1839 .show_host_port_name = 1, 1840 .show_host_supported_classes = 1, 1841 .show_host_supported_fc4s = 1, 1842 .show_host_active_fc4s = 1, 1843 .show_host_maxframe_size = 1, 1844 1845 .show_host_port_id = 1, 1846 .show_host_supported_speeds = 1, 1847 .get_host_speed = fc_get_host_speed, 1848 .show_host_speed = 1, 1849 .show_host_port_type = 1, 1850 .get_host_port_state = fc_get_host_port_state, 1851 .show_host_port_state = 1, 1852 .show_host_symbolic_name = 1, 1853 1854 /* 1855 * Tell FC transport to allocate enough space to store the backpointer 1856 * for the associate qedf_rport struct. 1857 */ 1858 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 1859 sizeof(struct qedf_rport)), 1860 .show_rport_maxframe_size = 1, 1861 .show_rport_supported_classes = 1, 1862 .show_host_fabric_name = 1, 1863 .show_starget_node_name = 1, 1864 .show_starget_port_name = 1, 1865 .show_starget_port_id = 1, 1866 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 1867 .show_rport_dev_loss_tmo = 1, 1868 .get_fc_host_stats = qedf_fc_get_host_stats, 1869 .issue_fc_host_lip = qedf_fcoe_reset, 1870 .vport_create = qedf_vport_create, 1871 .vport_delete = qedf_vport_destroy, 1872 .vport_disable = qedf_vport_disable, 1873 .bsg_request = fc_lport_bsg_request, 1874 }; 1875 1876 static struct fc_function_template qedf_fc_vport_transport_fn = { 1877 .show_host_node_name = 1, 1878 .show_host_port_name = 1, 1879 .show_host_supported_classes = 1, 1880 .show_host_supported_fc4s = 1, 1881 .show_host_active_fc4s = 1, 1882 .show_host_maxframe_size = 1, 1883 .show_host_port_id = 1, 1884 .show_host_supported_speeds = 1, 1885 .get_host_speed = fc_get_host_speed, 1886 .show_host_speed = 1, 1887 .show_host_port_type = 1, 1888 .get_host_port_state = fc_get_host_port_state, 1889 .show_host_port_state = 1, 1890 .show_host_symbolic_name = 1, 1891 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 1892 sizeof(struct qedf_rport)), 1893 .show_rport_maxframe_size = 1, 1894 .show_rport_supported_classes = 1, 1895 .show_host_fabric_name = 1, 1896 .show_starget_node_name = 1, 1897 .show_starget_port_name = 1, 1898 .show_starget_port_id = 1, 1899 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 1900 .show_rport_dev_loss_tmo = 1, 1901 .get_fc_host_stats = fc_get_host_stats, 1902 .issue_fc_host_lip = qedf_fcoe_reset, 1903 .bsg_request = fc_lport_bsg_request, 1904 }; 1905 1906 static bool qedf_fp_has_work(struct qedf_fastpath *fp) 1907 { 1908 struct qedf_ctx *qedf = fp->qedf; 1909 struct global_queue *que; 1910 struct qed_sb_info *sb_info = fp->sb_info; 1911 struct status_block_e4 *sb = sb_info->sb_virt; 1912 u16 prod_idx; 1913 1914 /* Get the pointer to the global CQ this completion is on */ 1915 que = qedf->global_queues[fp->sb_id]; 1916 1917 /* Be sure all responses have been written to PI */ 1918 rmb(); 1919 1920 /* Get the current firmware producer index */ 1921 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 1922 1923 return (que->cq_prod_idx != prod_idx); 1924 } 1925 1926 /* 1927 * Interrupt handler code. 1928 */ 1929 1930 /* Process completion queue and copy CQE contents for deferred processesing 1931 * 1932 * Return true if we should wake the I/O thread, false if not. 1933 */ 1934 static bool qedf_process_completions(struct qedf_fastpath *fp) 1935 { 1936 struct qedf_ctx *qedf = fp->qedf; 1937 struct qed_sb_info *sb_info = fp->sb_info; 1938 struct status_block_e4 *sb = sb_info->sb_virt; 1939 struct global_queue *que; 1940 u16 prod_idx; 1941 struct fcoe_cqe *cqe; 1942 struct qedf_io_work *io_work; 1943 int num_handled = 0; 1944 unsigned int cpu; 1945 struct qedf_ioreq *io_req = NULL; 1946 u16 xid; 1947 u16 new_cqes; 1948 u32 comp_type; 1949 1950 /* Get the current firmware producer index */ 1951 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 1952 1953 /* Get the pointer to the global CQ this completion is on */ 1954 que = qedf->global_queues[fp->sb_id]; 1955 1956 /* Calculate the amount of new elements since last processing */ 1957 new_cqes = (prod_idx >= que->cq_prod_idx) ? 1958 (prod_idx - que->cq_prod_idx) : 1959 0x10000 - que->cq_prod_idx + prod_idx; 1960 1961 /* Save producer index */ 1962 que->cq_prod_idx = prod_idx; 1963 1964 while (new_cqes) { 1965 fp->completions++; 1966 num_handled++; 1967 cqe = &que->cq[que->cq_cons_idx]; 1968 1969 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 1970 FCOE_CQE_CQE_TYPE_MASK; 1971 1972 /* 1973 * Process unsolicited CQEs directly in the interrupt handler 1974 * sine we need the fastpath ID 1975 */ 1976 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) { 1977 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL, 1978 "Unsolicated CQE.\n"); 1979 qedf_process_unsol_compl(qedf, fp->sb_id, cqe); 1980 /* 1981 * Don't add a work list item. Increment consumer 1982 * consumer index and move on. 1983 */ 1984 goto inc_idx; 1985 } 1986 1987 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 1988 io_req = &qedf->cmd_mgr->cmds[xid]; 1989 1990 /* 1991 * Figure out which percpu thread we should queue this I/O 1992 * on. 1993 */ 1994 if (!io_req) 1995 /* If there is not io_req assocated with this CQE 1996 * just queue it on CPU 0 1997 */ 1998 cpu = 0; 1999 else { 2000 cpu = io_req->cpu; 2001 io_req->int_cpu = smp_processor_id(); 2002 } 2003 2004 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC); 2005 if (!io_work) { 2006 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate " 2007 "work for I/O completion.\n"); 2008 continue; 2009 } 2010 memset(io_work, 0, sizeof(struct qedf_io_work)); 2011 2012 INIT_WORK(&io_work->work, qedf_fp_io_handler); 2013 2014 /* Copy contents of CQE for deferred processing */ 2015 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe)); 2016 2017 io_work->qedf = fp->qedf; 2018 io_work->fp = NULL; /* Only used for unsolicited frames */ 2019 2020 queue_work_on(cpu, qedf_io_wq, &io_work->work); 2021 2022 inc_idx: 2023 que->cq_cons_idx++; 2024 if (que->cq_cons_idx == fp->cq_num_entries) 2025 que->cq_cons_idx = 0; 2026 new_cqes--; 2027 } 2028 2029 return true; 2030 } 2031 2032 2033 /* MSI-X fastpath handler code */ 2034 static irqreturn_t qedf_msix_handler(int irq, void *dev_id) 2035 { 2036 struct qedf_fastpath *fp = dev_id; 2037 2038 if (!fp) { 2039 QEDF_ERR(NULL, "fp is null.\n"); 2040 return IRQ_HANDLED; 2041 } 2042 if (!fp->sb_info) { 2043 QEDF_ERR(NULL, "fp->sb_info in null."); 2044 return IRQ_HANDLED; 2045 } 2046 2047 /* 2048 * Disable interrupts for this status block while we process new 2049 * completions 2050 */ 2051 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/); 2052 2053 while (1) { 2054 qedf_process_completions(fp); 2055 2056 if (qedf_fp_has_work(fp) == 0) { 2057 /* Update the sb information */ 2058 qed_sb_update_sb_idx(fp->sb_info); 2059 2060 /* Check for more work */ 2061 rmb(); 2062 2063 if (qedf_fp_has_work(fp) == 0) { 2064 /* Re-enable interrupts */ 2065 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 2066 return IRQ_HANDLED; 2067 } 2068 } 2069 } 2070 2071 /* Do we ever want to break out of above loop? */ 2072 return IRQ_HANDLED; 2073 } 2074 2075 /* simd handler for MSI/INTa */ 2076 static void qedf_simd_int_handler(void *cookie) 2077 { 2078 /* Cookie is qedf_ctx struct */ 2079 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2080 2081 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf); 2082 } 2083 2084 #define QEDF_SIMD_HANDLER_NUM 0 2085 static void qedf_sync_free_irqs(struct qedf_ctx *qedf) 2086 { 2087 int i; 2088 2089 if (qedf->int_info.msix_cnt) { 2090 for (i = 0; i < qedf->int_info.used_cnt; i++) { 2091 synchronize_irq(qedf->int_info.msix[i].vector); 2092 irq_set_affinity_hint(qedf->int_info.msix[i].vector, 2093 NULL); 2094 irq_set_affinity_notifier(qedf->int_info.msix[i].vector, 2095 NULL); 2096 free_irq(qedf->int_info.msix[i].vector, 2097 &qedf->fp_array[i]); 2098 } 2099 } else 2100 qed_ops->common->simd_handler_clean(qedf->cdev, 2101 QEDF_SIMD_HANDLER_NUM); 2102 2103 qedf->int_info.used_cnt = 0; 2104 qed_ops->common->set_fp_int(qedf->cdev, 0); 2105 } 2106 2107 static int qedf_request_msix_irq(struct qedf_ctx *qedf) 2108 { 2109 int i, rc, cpu; 2110 2111 cpu = cpumask_first(cpu_online_mask); 2112 for (i = 0; i < qedf->num_queues; i++) { 2113 rc = request_irq(qedf->int_info.msix[i].vector, 2114 qedf_msix_handler, 0, "qedf", &qedf->fp_array[i]); 2115 2116 if (rc) { 2117 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n"); 2118 qedf_sync_free_irqs(qedf); 2119 return rc; 2120 } 2121 2122 qedf->int_info.used_cnt++; 2123 rc = irq_set_affinity_hint(qedf->int_info.msix[i].vector, 2124 get_cpu_mask(cpu)); 2125 cpu = cpumask_next(cpu, cpu_online_mask); 2126 } 2127 2128 return 0; 2129 } 2130 2131 static int qedf_setup_int(struct qedf_ctx *qedf) 2132 { 2133 int rc = 0; 2134 2135 /* 2136 * Learn interrupt configuration 2137 */ 2138 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus()); 2139 if (rc <= 0) 2140 return 0; 2141 2142 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info); 2143 if (rc) 2144 return 0; 2145 2146 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = " 2147 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt, 2148 num_online_cpus()); 2149 2150 if (qedf->int_info.msix_cnt) 2151 return qedf_request_msix_irq(qedf); 2152 2153 qed_ops->common->simd_handler_config(qedf->cdev, &qedf, 2154 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler); 2155 qedf->int_info.used_cnt = 1; 2156 2157 QEDF_ERR(&qedf->dbg_ctx, "Only MSI-X supported. Failing probe.\n"); 2158 return -EINVAL; 2159 } 2160 2161 /* Main function for libfc frame reception */ 2162 static void qedf_recv_frame(struct qedf_ctx *qedf, 2163 struct sk_buff *skb) 2164 { 2165 u32 fr_len; 2166 struct fc_lport *lport; 2167 struct fc_frame_header *fh; 2168 struct fcoe_crc_eof crc_eof; 2169 struct fc_frame *fp; 2170 u8 *mac = NULL; 2171 u8 *dest_mac = NULL; 2172 struct fcoe_hdr *hp; 2173 struct qedf_rport *fcport; 2174 struct fc_lport *vn_port; 2175 u32 f_ctl; 2176 2177 lport = qedf->lport; 2178 if (lport == NULL || lport->state == LPORT_ST_DISABLED) { 2179 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n"); 2180 kfree_skb(skb); 2181 return; 2182 } 2183 2184 if (skb_is_nonlinear(skb)) 2185 skb_linearize(skb); 2186 mac = eth_hdr(skb)->h_source; 2187 dest_mac = eth_hdr(skb)->h_dest; 2188 2189 /* Pull the header */ 2190 hp = (struct fcoe_hdr *)skb->data; 2191 fh = (struct fc_frame_header *) skb_transport_header(skb); 2192 skb_pull(skb, sizeof(struct fcoe_hdr)); 2193 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 2194 2195 fp = (struct fc_frame *)skb; 2196 fc_frame_init(fp); 2197 fr_dev(fp) = lport; 2198 fr_sof(fp) = hp->fcoe_sof; 2199 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 2200 kfree_skb(skb); 2201 return; 2202 } 2203 fr_eof(fp) = crc_eof.fcoe_eof; 2204 fr_crc(fp) = crc_eof.fcoe_crc32; 2205 if (pskb_trim(skb, fr_len)) { 2206 kfree_skb(skb); 2207 return; 2208 } 2209 2210 fh = fc_frame_header_get(fp); 2211 2212 /* 2213 * Invalid frame filters. 2214 */ 2215 2216 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 2217 fh->fh_type == FC_TYPE_FCP) { 2218 /* Drop FCP data. We dont this in L2 path */ 2219 kfree_skb(skb); 2220 return; 2221 } 2222 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 2223 fh->fh_type == FC_TYPE_ELS) { 2224 switch (fc_frame_payload_op(fp)) { 2225 case ELS_LOGO: 2226 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 2227 /* drop non-FIP LOGO */ 2228 kfree_skb(skb); 2229 return; 2230 } 2231 break; 2232 } 2233 } 2234 2235 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 2236 /* Drop incoming ABTS */ 2237 kfree_skb(skb); 2238 return; 2239 } 2240 2241 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { 2242 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2243 "FC frame d_id mismatch with MAC %pM.\n", dest_mac); 2244 kfree_skb(skb); 2245 return; 2246 } 2247 2248 if (qedf->ctlr.state) { 2249 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) { 2250 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2251 "Wrong source address: mac:%pM dest_addr:%pM.\n", 2252 mac, qedf->ctlr.dest_addr); 2253 kfree_skb(skb); 2254 return; 2255 } 2256 } 2257 2258 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 2259 2260 /* 2261 * If the destination ID from the frame header does not match what we 2262 * have on record for lport and the search for a NPIV port came up 2263 * empty then this is not addressed to our port so simply drop it. 2264 */ 2265 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { 2266 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2267 "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n", 2268 lport->port_id, ntoh24(fh->fh_d_id)); 2269 kfree_skb(skb); 2270 return; 2271 } 2272 2273 f_ctl = ntoh24(fh->fh_f_ctl); 2274 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) && 2275 (f_ctl & FC_FC_EX_CTX)) { 2276 /* Drop incoming ABTS response that has both SEQ/EX CTX set */ 2277 kfree_skb(skb); 2278 return; 2279 } 2280 2281 /* 2282 * If a connection is uploading, drop incoming FCoE frames as there 2283 * is a small window where we could try to return a frame while libfc 2284 * is trying to clean things up. 2285 */ 2286 2287 /* Get fcport associated with d_id if it exists */ 2288 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 2289 2290 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 2291 &fcport->flags)) { 2292 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2293 "Connection uploading, dropping fp=%p.\n", fp); 2294 kfree_skb(skb); 2295 return; 2296 } 2297 2298 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: " 2299 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp, 2300 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, 2301 fh->fh_type); 2302 if (qedf_dump_frames) 2303 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 2304 1, skb->data, skb->len, false); 2305 fc_exch_recv(lport, fp); 2306 } 2307 2308 static void qedf_ll2_process_skb(struct work_struct *work) 2309 { 2310 struct qedf_skb_work *skb_work = 2311 container_of(work, struct qedf_skb_work, work); 2312 struct qedf_ctx *qedf = skb_work->qedf; 2313 struct sk_buff *skb = skb_work->skb; 2314 struct ethhdr *eh; 2315 2316 if (!qedf) { 2317 QEDF_ERR(NULL, "qedf is NULL\n"); 2318 goto err_out; 2319 } 2320 2321 eh = (struct ethhdr *)skb->data; 2322 2323 /* Undo VLAN encapsulation */ 2324 if (eh->h_proto == htons(ETH_P_8021Q)) { 2325 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); 2326 eh = skb_pull(skb, VLAN_HLEN); 2327 skb_reset_mac_header(skb); 2328 } 2329 2330 /* 2331 * Process either a FIP frame or FCoE frame based on the 2332 * protocol value. If it's not either just drop the 2333 * frame. 2334 */ 2335 if (eh->h_proto == htons(ETH_P_FIP)) { 2336 qedf_fip_recv(qedf, skb); 2337 goto out; 2338 } else if (eh->h_proto == htons(ETH_P_FCOE)) { 2339 __skb_pull(skb, ETH_HLEN); 2340 qedf_recv_frame(qedf, skb); 2341 goto out; 2342 } else 2343 goto err_out; 2344 2345 err_out: 2346 kfree_skb(skb); 2347 out: 2348 kfree(skb_work); 2349 return; 2350 } 2351 2352 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb, 2353 u32 arg1, u32 arg2) 2354 { 2355 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2356 struct qedf_skb_work *skb_work; 2357 2358 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC); 2359 if (!skb_work) { 2360 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so " 2361 "dropping frame.\n"); 2362 kfree_skb(skb); 2363 return 0; 2364 } 2365 2366 INIT_WORK(&skb_work->work, qedf_ll2_process_skb); 2367 skb_work->skb = skb; 2368 skb_work->qedf = qedf; 2369 queue_work(qedf->ll2_recv_wq, &skb_work->work); 2370 2371 return 0; 2372 } 2373 2374 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = { 2375 .rx_cb = qedf_ll2_rx, 2376 .tx_cb = NULL, 2377 }; 2378 2379 /* Main thread to process I/O completions */ 2380 void qedf_fp_io_handler(struct work_struct *work) 2381 { 2382 struct qedf_io_work *io_work = 2383 container_of(work, struct qedf_io_work, work); 2384 u32 comp_type; 2385 2386 /* 2387 * Deferred part of unsolicited CQE sends 2388 * frame to libfc. 2389 */ 2390 comp_type = (io_work->cqe.cqe_data >> 2391 FCOE_CQE_CQE_TYPE_SHIFT) & 2392 FCOE_CQE_CQE_TYPE_MASK; 2393 if (comp_type == FCOE_UNSOLIC_CQE_TYPE && 2394 io_work->fp) 2395 fc_exch_recv(io_work->qedf->lport, io_work->fp); 2396 else 2397 qedf_process_cqe(io_work->qedf, &io_work->cqe); 2398 2399 kfree(io_work); 2400 } 2401 2402 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf, 2403 struct qed_sb_info *sb_info, u16 sb_id) 2404 { 2405 struct status_block_e4 *sb_virt; 2406 dma_addr_t sb_phys; 2407 int ret; 2408 2409 sb_virt = dma_alloc_coherent(&qedf->pdev->dev, 2410 sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL); 2411 2412 if (!sb_virt) { 2413 QEDF_ERR(&(qedf->dbg_ctx), "Status block allocation failed " 2414 "for id = %d.\n", sb_id); 2415 return -ENOMEM; 2416 } 2417 2418 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys, 2419 sb_id, QED_SB_TYPE_STORAGE); 2420 2421 if (ret) { 2422 QEDF_ERR(&(qedf->dbg_ctx), "Status block initialization " 2423 "failed for id = %d.\n", sb_id); 2424 return ret; 2425 } 2426 2427 return 0; 2428 } 2429 2430 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info) 2431 { 2432 if (sb_info->sb_virt) 2433 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt), 2434 (void *)sb_info->sb_virt, sb_info->sb_phys); 2435 } 2436 2437 static void qedf_destroy_sb(struct qedf_ctx *qedf) 2438 { 2439 int id; 2440 struct qedf_fastpath *fp = NULL; 2441 2442 for (id = 0; id < qedf->num_queues; id++) { 2443 fp = &(qedf->fp_array[id]); 2444 if (fp->sb_id == QEDF_SB_ID_NULL) 2445 break; 2446 qedf_free_sb(qedf, fp->sb_info); 2447 kfree(fp->sb_info); 2448 } 2449 kfree(qedf->fp_array); 2450 } 2451 2452 static int qedf_prepare_sb(struct qedf_ctx *qedf) 2453 { 2454 int id; 2455 struct qedf_fastpath *fp; 2456 int ret; 2457 2458 qedf->fp_array = 2459 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath), 2460 GFP_KERNEL); 2461 2462 if (!qedf->fp_array) { 2463 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation " 2464 "failed.\n"); 2465 return -ENOMEM; 2466 } 2467 2468 for (id = 0; id < qedf->num_queues; id++) { 2469 fp = &(qedf->fp_array[id]); 2470 fp->sb_id = QEDF_SB_ID_NULL; 2471 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL); 2472 if (!fp->sb_info) { 2473 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct " 2474 "allocation failed.\n"); 2475 goto err; 2476 } 2477 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id); 2478 if (ret) { 2479 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and " 2480 "initialization failed.\n"); 2481 goto err; 2482 } 2483 fp->sb_id = id; 2484 fp->qedf = qedf; 2485 fp->cq_num_entries = 2486 qedf->global_queues[id]->cq_mem_size / 2487 sizeof(struct fcoe_cqe); 2488 } 2489 err: 2490 return 0; 2491 } 2492 2493 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe) 2494 { 2495 u16 xid; 2496 struct qedf_ioreq *io_req; 2497 struct qedf_rport *fcport; 2498 u32 comp_type; 2499 2500 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2501 FCOE_CQE_CQE_TYPE_MASK; 2502 2503 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2504 io_req = &qedf->cmd_mgr->cmds[xid]; 2505 2506 /* Completion not for a valid I/O anymore so just return */ 2507 if (!io_req) 2508 return; 2509 2510 fcport = io_req->fcport; 2511 2512 if (fcport == NULL) { 2513 QEDF_ERR(&(qedf->dbg_ctx), "fcport is NULL.\n"); 2514 return; 2515 } 2516 2517 /* 2518 * Check that fcport is offloaded. If it isn't then the spinlock 2519 * isn't valid and shouldn't be taken. We should just return. 2520 */ 2521 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 2522 QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n"); 2523 return; 2524 } 2525 2526 2527 switch (comp_type) { 2528 case FCOE_GOOD_COMPLETION_CQE_TYPE: 2529 atomic_inc(&fcport->free_sqes); 2530 switch (io_req->cmd_type) { 2531 case QEDF_SCSI_CMD: 2532 qedf_scsi_completion(qedf, cqe, io_req); 2533 break; 2534 case QEDF_ELS: 2535 qedf_process_els_compl(qedf, cqe, io_req); 2536 break; 2537 case QEDF_TASK_MGMT_CMD: 2538 qedf_process_tmf_compl(qedf, cqe, io_req); 2539 break; 2540 case QEDF_SEQ_CLEANUP: 2541 qedf_process_seq_cleanup_compl(qedf, cqe, io_req); 2542 break; 2543 } 2544 break; 2545 case FCOE_ERROR_DETECTION_CQE_TYPE: 2546 atomic_inc(&fcport->free_sqes); 2547 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2548 "Error detect CQE.\n"); 2549 qedf_process_error_detect(qedf, cqe, io_req); 2550 break; 2551 case FCOE_EXCH_CLEANUP_CQE_TYPE: 2552 atomic_inc(&fcport->free_sqes); 2553 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2554 "Cleanup CQE.\n"); 2555 qedf_process_cleanup_compl(qedf, cqe, io_req); 2556 break; 2557 case FCOE_ABTS_CQE_TYPE: 2558 atomic_inc(&fcport->free_sqes); 2559 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2560 "Abort CQE.\n"); 2561 qedf_process_abts_compl(qedf, cqe, io_req); 2562 break; 2563 case FCOE_DUMMY_CQE_TYPE: 2564 atomic_inc(&fcport->free_sqes); 2565 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2566 "Dummy CQE.\n"); 2567 break; 2568 case FCOE_LOCAL_COMP_CQE_TYPE: 2569 atomic_inc(&fcport->free_sqes); 2570 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2571 "Local completion CQE.\n"); 2572 break; 2573 case FCOE_WARNING_CQE_TYPE: 2574 atomic_inc(&fcport->free_sqes); 2575 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2576 "Warning CQE.\n"); 2577 qedf_process_warning_compl(qedf, cqe, io_req); 2578 break; 2579 case MAX_FCOE_CQE_TYPE: 2580 atomic_inc(&fcport->free_sqes); 2581 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2582 "Max FCoE CQE.\n"); 2583 break; 2584 default: 2585 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2586 "Default CQE.\n"); 2587 break; 2588 } 2589 } 2590 2591 static void qedf_free_bdq(struct qedf_ctx *qedf) 2592 { 2593 int i; 2594 2595 if (qedf->bdq_pbl_list) 2596 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE, 2597 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma); 2598 2599 if (qedf->bdq_pbl) 2600 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size, 2601 qedf->bdq_pbl, qedf->bdq_pbl_dma); 2602 2603 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2604 if (qedf->bdq[i].buf_addr) { 2605 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE, 2606 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma); 2607 } 2608 } 2609 } 2610 2611 static void qedf_free_global_queues(struct qedf_ctx *qedf) 2612 { 2613 int i; 2614 struct global_queue **gl = qedf->global_queues; 2615 2616 for (i = 0; i < qedf->num_queues; i++) { 2617 if (!gl[i]) 2618 continue; 2619 2620 if (gl[i]->cq) 2621 dma_free_coherent(&qedf->pdev->dev, 2622 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma); 2623 if (gl[i]->cq_pbl) 2624 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size, 2625 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 2626 2627 kfree(gl[i]); 2628 } 2629 2630 qedf_free_bdq(qedf); 2631 } 2632 2633 static int qedf_alloc_bdq(struct qedf_ctx *qedf) 2634 { 2635 int i; 2636 struct scsi_bd *pbl; 2637 u64 *list; 2638 dma_addr_t page; 2639 2640 /* Alloc dma memory for BDQ buffers */ 2641 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2642 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev, 2643 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL); 2644 if (!qedf->bdq[i].buf_addr) { 2645 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ " 2646 "buffer %d.\n", i); 2647 return -ENOMEM; 2648 } 2649 } 2650 2651 /* Alloc dma memory for BDQ page buffer list */ 2652 qedf->bdq_pbl_mem_size = 2653 QEDF_BDQ_SIZE * sizeof(struct scsi_bd); 2654 qedf->bdq_pbl_mem_size = 2655 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE); 2656 2657 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 2658 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL); 2659 if (!qedf->bdq_pbl) { 2660 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n"); 2661 return -ENOMEM; 2662 } 2663 2664 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2665 "BDQ PBL addr=0x%p dma=%pad\n", 2666 qedf->bdq_pbl, &qedf->bdq_pbl_dma); 2667 2668 /* 2669 * Populate BDQ PBL with physical and virtual address of individual 2670 * BDQ buffers 2671 */ 2672 pbl = (struct scsi_bd *)qedf->bdq_pbl; 2673 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2674 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma)); 2675 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma)); 2676 pbl->opaque.fcoe_opaque.hi = 0; 2677 /* Opaque lo data is an index into the BDQ array */ 2678 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i); 2679 pbl++; 2680 } 2681 2682 /* Allocate list of PBL pages */ 2683 qedf->bdq_pbl_list = dma_zalloc_coherent(&qedf->pdev->dev, 2684 QEDF_PAGE_SIZE, &qedf->bdq_pbl_list_dma, GFP_KERNEL); 2685 if (!qedf->bdq_pbl_list) { 2686 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n"); 2687 return -ENOMEM; 2688 } 2689 2690 /* 2691 * Now populate PBL list with pages that contain pointers to the 2692 * individual buffers. 2693 */ 2694 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size / 2695 QEDF_PAGE_SIZE; 2696 list = (u64 *)qedf->bdq_pbl_list; 2697 page = qedf->bdq_pbl_list_dma; 2698 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) { 2699 *list = qedf->bdq_pbl_dma; 2700 list++; 2701 page += QEDF_PAGE_SIZE; 2702 } 2703 2704 return 0; 2705 } 2706 2707 static int qedf_alloc_global_queues(struct qedf_ctx *qedf) 2708 { 2709 u32 *list; 2710 int i; 2711 int status = 0, rc; 2712 u32 *pbl; 2713 dma_addr_t page; 2714 int num_pages; 2715 2716 /* Allocate and map CQs, RQs */ 2717 /* 2718 * Number of global queues (CQ / RQ). This should 2719 * be <= number of available MSIX vectors for the PF 2720 */ 2721 if (!qedf->num_queues) { 2722 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n"); 2723 return 1; 2724 } 2725 2726 /* 2727 * Make sure we allocated the PBL that will contain the physical 2728 * addresses of our queues 2729 */ 2730 if (!qedf->p_cpuq) { 2731 status = 1; 2732 goto mem_alloc_failure; 2733 } 2734 2735 qedf->global_queues = kzalloc((sizeof(struct global_queue *) 2736 * qedf->num_queues), GFP_KERNEL); 2737 if (!qedf->global_queues) { 2738 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global " 2739 "queues array ptr memory\n"); 2740 return -ENOMEM; 2741 } 2742 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2743 "qedf->global_queues=%p.\n", qedf->global_queues); 2744 2745 /* Allocate DMA coherent buffers for BDQ */ 2746 rc = qedf_alloc_bdq(qedf); 2747 if (rc) 2748 goto mem_alloc_failure; 2749 2750 /* Allocate a CQ and an associated PBL for each MSI-X vector */ 2751 for (i = 0; i < qedf->num_queues; i++) { 2752 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue), 2753 GFP_KERNEL); 2754 if (!qedf->global_queues[i]) { 2755 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate " 2756 "global queue %d.\n", i); 2757 status = -ENOMEM; 2758 goto mem_alloc_failure; 2759 } 2760 2761 qedf->global_queues[i]->cq_mem_size = 2762 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 2763 qedf->global_queues[i]->cq_mem_size = 2764 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE); 2765 2766 qedf->global_queues[i]->cq_pbl_size = 2767 (qedf->global_queues[i]->cq_mem_size / 2768 PAGE_SIZE) * sizeof(void *); 2769 qedf->global_queues[i]->cq_pbl_size = 2770 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE); 2771 2772 qedf->global_queues[i]->cq = 2773 dma_zalloc_coherent(&qedf->pdev->dev, 2774 qedf->global_queues[i]->cq_mem_size, 2775 &qedf->global_queues[i]->cq_dma, GFP_KERNEL); 2776 2777 if (!qedf->global_queues[i]->cq) { 2778 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n"); 2779 status = -ENOMEM; 2780 goto mem_alloc_failure; 2781 } 2782 2783 qedf->global_queues[i]->cq_pbl = 2784 dma_zalloc_coherent(&qedf->pdev->dev, 2785 qedf->global_queues[i]->cq_pbl_size, 2786 &qedf->global_queues[i]->cq_pbl_dma, GFP_KERNEL); 2787 2788 if (!qedf->global_queues[i]->cq_pbl) { 2789 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n"); 2790 status = -ENOMEM; 2791 goto mem_alloc_failure; 2792 } 2793 2794 /* Create PBL */ 2795 num_pages = qedf->global_queues[i]->cq_mem_size / 2796 QEDF_PAGE_SIZE; 2797 page = qedf->global_queues[i]->cq_dma; 2798 pbl = (u32 *)qedf->global_queues[i]->cq_pbl; 2799 2800 while (num_pages--) { 2801 *pbl = U64_LO(page); 2802 pbl++; 2803 *pbl = U64_HI(page); 2804 pbl++; 2805 page += QEDF_PAGE_SIZE; 2806 } 2807 /* Set the initial consumer index for cq */ 2808 qedf->global_queues[i]->cq_cons_idx = 0; 2809 } 2810 2811 list = (u32 *)qedf->p_cpuq; 2812 2813 /* 2814 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 2815 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 2816 * to the physical address which contains an array of pointers to 2817 * the physical addresses of the specific queue pages. 2818 */ 2819 for (i = 0; i < qedf->num_queues; i++) { 2820 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma); 2821 list++; 2822 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma); 2823 list++; 2824 *list = U64_LO(0); 2825 list++; 2826 *list = U64_HI(0); 2827 list++; 2828 } 2829 2830 return 0; 2831 2832 mem_alloc_failure: 2833 qedf_free_global_queues(qedf); 2834 return status; 2835 } 2836 2837 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf) 2838 { 2839 u8 sq_num_pbl_pages; 2840 u32 sq_mem_size; 2841 u32 cq_mem_size; 2842 u32 cq_num_entries; 2843 int rval; 2844 2845 /* 2846 * The number of completion queues/fastpath interrupts/status blocks 2847 * we allocation is the minimum off: 2848 * 2849 * Number of CPUs 2850 * Number allocated by qed for our PCI function 2851 */ 2852 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf); 2853 2854 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n", 2855 qedf->num_queues); 2856 2857 qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev, 2858 qedf->num_queues * sizeof(struct qedf_glbl_q_params), 2859 &qedf->hw_p_cpuq, GFP_KERNEL); 2860 2861 if (!qedf->p_cpuq) { 2862 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n"); 2863 return 1; 2864 } 2865 2866 rval = qedf_alloc_global_queues(qedf); 2867 if (rval) { 2868 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation " 2869 "failed.\n"); 2870 return 1; 2871 } 2872 2873 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */ 2874 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 2875 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE); 2876 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE); 2877 2878 /* Calculate CQ num entries */ 2879 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 2880 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE); 2881 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe); 2882 2883 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params)); 2884 2885 /* Setup the value for fcoe PF */ 2886 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS; 2887 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS; 2888 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr = 2889 (u64)qedf->hw_p_cpuq; 2890 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages; 2891 2892 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0; 2893 2894 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries; 2895 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues; 2896 2897 /* log_page_size: 12 for 4KB pages */ 2898 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE); 2899 2900 qedf->pf_params.fcoe_pf_params.mtu = 9000; 2901 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI; 2902 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI; 2903 2904 /* BDQ address and size */ 2905 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] = 2906 qedf->bdq_pbl_list_dma; 2907 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] = 2908 qedf->bdq_pbl_list_num_entries; 2909 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE; 2910 2911 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2912 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n", 2913 qedf->bdq_pbl_list, 2914 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0], 2915 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]); 2916 2917 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2918 "cq_num_entries=%d.\n", 2919 qedf->pf_params.fcoe_pf_params.cq_num_entries); 2920 2921 return 0; 2922 } 2923 2924 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 2925 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf) 2926 { 2927 size_t size = 0; 2928 2929 if (qedf->p_cpuq) { 2930 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params); 2931 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq, 2932 qedf->hw_p_cpuq); 2933 } 2934 2935 qedf_free_global_queues(qedf); 2936 2937 kfree(qedf->global_queues); 2938 } 2939 2940 /* 2941 * PCI driver functions 2942 */ 2943 2944 static const struct pci_device_id qedf_pci_tbl[] = { 2945 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) }, 2946 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) }, 2947 {0} 2948 }; 2949 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl); 2950 2951 static struct pci_driver qedf_pci_driver = { 2952 .name = QEDF_MODULE_NAME, 2953 .id_table = qedf_pci_tbl, 2954 .probe = qedf_probe, 2955 .remove = qedf_remove, 2956 }; 2957 2958 static int __qedf_probe(struct pci_dev *pdev, int mode) 2959 { 2960 int rc = -EINVAL; 2961 struct fc_lport *lport; 2962 struct qedf_ctx *qedf; 2963 struct Scsi_Host *host; 2964 bool is_vf = false; 2965 struct qed_ll2_params params; 2966 char host_buf[20]; 2967 struct qed_link_params link_params; 2968 int status; 2969 void *task_start, *task_end; 2970 struct qed_slowpath_params slowpath_params; 2971 struct qed_probe_params qed_params; 2972 u16 tmp; 2973 2974 /* 2975 * When doing error recovery we didn't reap the lport so don't try 2976 * to reallocate it. 2977 */ 2978 if (mode != QEDF_MODE_RECOVERY) { 2979 lport = libfc_host_alloc(&qedf_host_template, 2980 sizeof(struct qedf_ctx)); 2981 2982 if (!lport) { 2983 QEDF_ERR(NULL, "Could not allocate lport.\n"); 2984 rc = -ENOMEM; 2985 goto err0; 2986 } 2987 2988 /* Initialize qedf_ctx */ 2989 qedf = lport_priv(lport); 2990 qedf->lport = lport; 2991 qedf->ctlr.lp = lport; 2992 qedf->pdev = pdev; 2993 qedf->dbg_ctx.pdev = pdev; 2994 qedf->dbg_ctx.host_no = lport->host->host_no; 2995 spin_lock_init(&qedf->hba_lock); 2996 INIT_LIST_HEAD(&qedf->fcports); 2997 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1; 2998 atomic_set(&qedf->num_offloads, 0); 2999 qedf->stop_io_on_error = false; 3000 pci_set_drvdata(pdev, qedf); 3001 init_completion(&qedf->fipvlan_compl); 3002 mutex_init(&qedf->stats_mutex); 3003 3004 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, 3005 "QLogic FastLinQ FCoE Module qedf %s, " 3006 "FW %d.%d.%d.%d\n", QEDF_VERSION, 3007 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 3008 FW_ENGINEERING_VERSION); 3009 } else { 3010 /* Init pointers during recovery */ 3011 qedf = pci_get_drvdata(pdev); 3012 lport = qedf->lport; 3013 } 3014 3015 host = lport->host; 3016 3017 /* Allocate mempool for qedf_io_work structs */ 3018 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN, 3019 qedf_io_work_cache); 3020 if (qedf->io_mempool == NULL) { 3021 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n"); 3022 goto err1; 3023 } 3024 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n", 3025 qedf->io_mempool); 3026 3027 sprintf(host_buf, "qedf_%u_link", 3028 qedf->lport->host->host_no); 3029 qedf->link_update_wq = create_workqueue(host_buf); 3030 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update); 3031 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery); 3032 INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump); 3033 qedf->fipvlan_retries = qedf_fipvlan_retries; 3034 /* Set a default prio in case DCBX doesn't converge */ 3035 if (qedf_default_prio > -1) { 3036 /* 3037 * This is the case where we pass a modparam in so we want to 3038 * honor it even if dcbx doesn't converge. 3039 */ 3040 qedf->prio = qedf_default_prio; 3041 } else 3042 qedf->prio = QEDF_DEFAULT_PRIO; 3043 3044 /* 3045 * Common probe. Takes care of basic hardware init and pci_* 3046 * functions. 3047 */ 3048 memset(&qed_params, 0, sizeof(qed_params)); 3049 qed_params.protocol = QED_PROTOCOL_FCOE; 3050 qed_params.dp_module = qedf_dp_module; 3051 qed_params.dp_level = qedf_dp_level; 3052 qed_params.is_vf = is_vf; 3053 qedf->cdev = qed_ops->common->probe(pdev, &qed_params); 3054 if (!qedf->cdev) { 3055 rc = -ENODEV; 3056 goto err1; 3057 } 3058 3059 /* Learn information crucial for qedf to progress */ 3060 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3061 if (rc) { 3062 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n"); 3063 goto err1; 3064 } 3065 3066 /* queue allocation code should come here 3067 * order should be 3068 * slowpath_start 3069 * status block allocation 3070 * interrupt registration (to get min number of queues) 3071 * set_fcoe_pf_param 3072 * qed_sp_fcoe_func_start 3073 */ 3074 rc = qedf_set_fcoe_pf_param(qedf); 3075 if (rc) { 3076 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n"); 3077 goto err2; 3078 } 3079 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3080 3081 /* Record BDQ producer doorbell addresses */ 3082 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr; 3083 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr; 3084 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3085 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod, 3086 qedf->bdq_secondary_prod); 3087 3088 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf); 3089 3090 rc = qedf_prepare_sb(qedf); 3091 if (rc) { 3092 3093 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3094 goto err2; 3095 } 3096 3097 /* Start the Slowpath-process */ 3098 slowpath_params.int_mode = QED_INT_MODE_MSIX; 3099 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER; 3100 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER; 3101 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER; 3102 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER; 3103 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE); 3104 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params); 3105 if (rc) { 3106 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3107 goto err2; 3108 } 3109 3110 /* 3111 * update_pf_params needs to be called before and after slowpath 3112 * start 3113 */ 3114 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3115 3116 /* Setup interrupts */ 3117 rc = qedf_setup_int(qedf); 3118 if (rc) 3119 goto err3; 3120 3121 rc = qed_ops->start(qedf->cdev, &qedf->tasks); 3122 if (rc) { 3123 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n"); 3124 goto err4; 3125 } 3126 task_start = qedf_get_task_mem(&qedf->tasks, 0); 3127 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1); 3128 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, " 3129 "end=%p block_size=%u.\n", task_start, task_end, 3130 qedf->tasks.size); 3131 3132 /* 3133 * We need to write the number of BDs in the BDQ we've preallocated so 3134 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 3135 * packet arrives. 3136 */ 3137 qedf->bdq_prod_idx = QEDF_BDQ_SIZE; 3138 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3139 "Writing %d to primary and secondary BDQ doorbell registers.\n", 3140 qedf->bdq_prod_idx); 3141 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod); 3142 tmp = readw(qedf->bdq_primary_prod); 3143 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod); 3144 tmp = readw(qedf->bdq_secondary_prod); 3145 3146 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3147 3148 /* Now that the dev_info struct has been filled in set the MAC 3149 * address 3150 */ 3151 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac); 3152 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n", 3153 qedf->mac); 3154 3155 /* 3156 * Set the WWNN and WWPN in the following way: 3157 * 3158 * If the info we get from qed is non-zero then use that to set the 3159 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based 3160 * on the MAC address. 3161 */ 3162 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) { 3163 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3164 "Setting WWPN and WWNN from qed dev_info.\n"); 3165 qedf->wwnn = qedf->dev_info.wwnn; 3166 qedf->wwpn = qedf->dev_info.wwpn; 3167 } else { 3168 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3169 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n"); 3170 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0); 3171 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0); 3172 } 3173 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx " 3174 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn); 3175 3176 sprintf(host_buf, "host_%d", host->host_no); 3177 qed_ops->common->set_name(qedf->cdev, host_buf); 3178 3179 3180 /* Set xid max values */ 3181 qedf->max_scsi_xid = QEDF_MAX_SCSI_XID; 3182 qedf->max_els_xid = QEDF_MAX_ELS_XID; 3183 3184 /* Allocate cmd mgr */ 3185 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf); 3186 if (!qedf->cmd_mgr) { 3187 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n"); 3188 rc = -ENOMEM; 3189 goto err5; 3190 } 3191 3192 if (mode != QEDF_MODE_RECOVERY) { 3193 host->transportt = qedf_fc_transport_template; 3194 host->can_queue = QEDF_MAX_ELS_XID; 3195 host->max_lun = qedf_max_lun; 3196 host->max_cmd_len = QEDF_MAX_CDB_LEN; 3197 rc = scsi_add_host(host, &pdev->dev); 3198 if (rc) 3199 goto err6; 3200 } 3201 3202 memset(¶ms, 0, sizeof(params)); 3203 params.mtu = 9000; 3204 ether_addr_copy(params.ll2_mac_address, qedf->mac); 3205 3206 /* Start LL2 processing thread */ 3207 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no); 3208 qedf->ll2_recv_wq = 3209 create_workqueue(host_buf); 3210 if (!qedf->ll2_recv_wq) { 3211 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n"); 3212 rc = -ENOMEM; 3213 goto err7; 3214 } 3215 3216 #ifdef CONFIG_DEBUG_FS 3217 qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops, 3218 qedf_dbg_fops); 3219 #endif 3220 3221 /* Start LL2 */ 3222 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf); 3223 rc = qed_ops->ll2->start(qedf->cdev, ¶ms); 3224 if (rc) { 3225 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n"); 3226 goto err7; 3227 } 3228 set_bit(QEDF_LL2_STARTED, &qedf->flags); 3229 3230 /* Set initial FIP/FCoE VLAN to NULL */ 3231 qedf->vlan_id = 0; 3232 3233 /* 3234 * No need to setup fcoe_ctlr or fc_lport objects during recovery since 3235 * they were not reaped during the unload process. 3236 */ 3237 if (mode != QEDF_MODE_RECOVERY) { 3238 /* Setup imbedded fcoe controller */ 3239 qedf_fcoe_ctlr_setup(qedf); 3240 3241 /* Setup lport */ 3242 rc = qedf_lport_setup(qedf); 3243 if (rc) { 3244 QEDF_ERR(&(qedf->dbg_ctx), 3245 "qedf_lport_setup failed.\n"); 3246 goto err7; 3247 } 3248 } 3249 3250 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no); 3251 qedf->timer_work_queue = 3252 create_workqueue(host_buf); 3253 if (!qedf->timer_work_queue) { 3254 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer " 3255 "workqueue.\n"); 3256 rc = -ENOMEM; 3257 goto err7; 3258 } 3259 3260 /* DPC workqueue is not reaped during recovery unload */ 3261 if (mode != QEDF_MODE_RECOVERY) { 3262 sprintf(host_buf, "qedf_%u_dpc", 3263 qedf->lport->host->host_no); 3264 qedf->dpc_wq = create_workqueue(host_buf); 3265 } 3266 3267 /* 3268 * GRC dump and sysfs parameters are not reaped during the recovery 3269 * unload process. 3270 */ 3271 if (mode != QEDF_MODE_RECOVERY) { 3272 qedf->grcdump_size = 3273 qed_ops->common->dbg_all_data_size(qedf->cdev); 3274 if (qedf->grcdump_size) { 3275 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump, 3276 qedf->grcdump_size); 3277 if (rc) { 3278 QEDF_ERR(&(qedf->dbg_ctx), 3279 "GRC Dump buffer alloc failed.\n"); 3280 qedf->grcdump = NULL; 3281 } 3282 3283 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3284 "grcdump: addr=%p, size=%u.\n", 3285 qedf->grcdump, qedf->grcdump_size); 3286 } 3287 qedf_create_sysfs_ctx_attr(qedf); 3288 3289 /* Initialize I/O tracing for this adapter */ 3290 spin_lock_init(&qedf->io_trace_lock); 3291 qedf->io_trace_idx = 0; 3292 } 3293 3294 init_completion(&qedf->flogi_compl); 3295 3296 status = qed_ops->common->update_drv_state(qedf->cdev, true); 3297 if (status) 3298 QEDF_ERR(&(qedf->dbg_ctx), 3299 "Failed to send drv state to MFW.\n"); 3300 3301 memset(&link_params, 0, sizeof(struct qed_link_params)); 3302 link_params.link_up = true; 3303 status = qed_ops->common->set_link(qedf->cdev, &link_params); 3304 if (status) 3305 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n"); 3306 3307 /* Start/restart discovery */ 3308 if (mode == QEDF_MODE_RECOVERY) 3309 fcoe_ctlr_link_up(&qedf->ctlr); 3310 else 3311 fc_fabric_login(lport); 3312 3313 /* All good */ 3314 return 0; 3315 3316 err7: 3317 if (qedf->ll2_recv_wq) 3318 destroy_workqueue(qedf->ll2_recv_wq); 3319 fc_remove_host(qedf->lport->host); 3320 scsi_remove_host(qedf->lport->host); 3321 #ifdef CONFIG_DEBUG_FS 3322 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3323 #endif 3324 err6: 3325 qedf_cmd_mgr_free(qedf->cmd_mgr); 3326 err5: 3327 qed_ops->stop(qedf->cdev); 3328 err4: 3329 qedf_free_fcoe_pf_param(qedf); 3330 qedf_sync_free_irqs(qedf); 3331 err3: 3332 qed_ops->common->slowpath_stop(qedf->cdev); 3333 err2: 3334 qed_ops->common->remove(qedf->cdev); 3335 err1: 3336 scsi_host_put(lport->host); 3337 err0: 3338 return rc; 3339 } 3340 3341 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id) 3342 { 3343 return __qedf_probe(pdev, QEDF_MODE_NORMAL); 3344 } 3345 3346 static void __qedf_remove(struct pci_dev *pdev, int mode) 3347 { 3348 struct qedf_ctx *qedf; 3349 int rc; 3350 3351 if (!pdev) { 3352 QEDF_ERR(NULL, "pdev is NULL.\n"); 3353 return; 3354 } 3355 3356 qedf = pci_get_drvdata(pdev); 3357 3358 /* 3359 * Prevent race where we're in board disable work and then try to 3360 * rmmod the module. 3361 */ 3362 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 3363 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n"); 3364 return; 3365 } 3366 3367 if (mode != QEDF_MODE_RECOVERY) 3368 set_bit(QEDF_UNLOADING, &qedf->flags); 3369 3370 /* Logoff the fabric to upload all connections */ 3371 if (mode == QEDF_MODE_RECOVERY) 3372 fcoe_ctlr_link_down(&qedf->ctlr); 3373 else 3374 fc_fabric_logoff(qedf->lport); 3375 qedf_wait_for_upload(qedf); 3376 3377 #ifdef CONFIG_DEBUG_FS 3378 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3379 #endif 3380 3381 /* Stop any link update handling */ 3382 cancel_delayed_work_sync(&qedf->link_update); 3383 destroy_workqueue(qedf->link_update_wq); 3384 qedf->link_update_wq = NULL; 3385 3386 if (qedf->timer_work_queue) 3387 destroy_workqueue(qedf->timer_work_queue); 3388 3389 /* Stop Light L2 */ 3390 clear_bit(QEDF_LL2_STARTED, &qedf->flags); 3391 qed_ops->ll2->stop(qedf->cdev); 3392 if (qedf->ll2_recv_wq) 3393 destroy_workqueue(qedf->ll2_recv_wq); 3394 3395 /* Stop fastpath */ 3396 qedf_sync_free_irqs(qedf); 3397 qedf_destroy_sb(qedf); 3398 3399 /* 3400 * During recovery don't destroy OS constructs that represent the 3401 * physical port. 3402 */ 3403 if (mode != QEDF_MODE_RECOVERY) { 3404 qedf_free_grc_dump_buf(&qedf->grcdump); 3405 qedf_remove_sysfs_ctx_attr(qedf); 3406 3407 /* Remove all SCSI/libfc/libfcoe structures */ 3408 fcoe_ctlr_destroy(&qedf->ctlr); 3409 fc_lport_destroy(qedf->lport); 3410 fc_remove_host(qedf->lport->host); 3411 scsi_remove_host(qedf->lport->host); 3412 } 3413 3414 qedf_cmd_mgr_free(qedf->cmd_mgr); 3415 3416 if (mode != QEDF_MODE_RECOVERY) { 3417 fc_exch_mgr_free(qedf->lport); 3418 fc_lport_free_stats(qedf->lport); 3419 3420 /* Wait for all vports to be reaped */ 3421 qedf_wait_for_vport_destroy(qedf); 3422 } 3423 3424 /* 3425 * Now that all connections have been uploaded we can stop the 3426 * rest of the qed operations 3427 */ 3428 qed_ops->stop(qedf->cdev); 3429 3430 if (mode != QEDF_MODE_RECOVERY) { 3431 if (qedf->dpc_wq) { 3432 /* Stop general DPC handling */ 3433 destroy_workqueue(qedf->dpc_wq); 3434 qedf->dpc_wq = NULL; 3435 } 3436 } 3437 3438 /* Final shutdown for the board */ 3439 qedf_free_fcoe_pf_param(qedf); 3440 if (mode != QEDF_MODE_RECOVERY) { 3441 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3442 pci_set_drvdata(pdev, NULL); 3443 } 3444 3445 rc = qed_ops->common->update_drv_state(qedf->cdev, false); 3446 if (rc) 3447 QEDF_ERR(&(qedf->dbg_ctx), 3448 "Failed to send drv state to MFW.\n"); 3449 3450 qed_ops->common->slowpath_stop(qedf->cdev); 3451 qed_ops->common->remove(qedf->cdev); 3452 3453 mempool_destroy(qedf->io_mempool); 3454 3455 /* Only reap the Scsi_host on a real removal */ 3456 if (mode != QEDF_MODE_RECOVERY) 3457 scsi_host_put(qedf->lport->host); 3458 } 3459 3460 static void qedf_remove(struct pci_dev *pdev) 3461 { 3462 /* Check to make sure this function wasn't already disabled */ 3463 if (!atomic_read(&pdev->enable_cnt)) 3464 return; 3465 3466 __qedf_remove(pdev, QEDF_MODE_NORMAL); 3467 } 3468 3469 void qedf_wq_grcdump(struct work_struct *work) 3470 { 3471 struct qedf_ctx *qedf = 3472 container_of(work, struct qedf_ctx, grcdump_work.work); 3473 3474 QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n"); 3475 qedf_capture_grc_dump(qedf); 3476 } 3477 3478 /* 3479 * Protocol TLV handler 3480 */ 3481 void qedf_get_protocol_tlv_data(void *dev, void *data) 3482 { 3483 struct qedf_ctx *qedf = dev; 3484 struct qed_mfw_tlv_fcoe *fcoe = data; 3485 struct fc_lport *lport = qedf->lport; 3486 struct Scsi_Host *host = lport->host; 3487 struct fc_host_attrs *fc_host = shost_to_fc_host(host); 3488 struct fc_host_statistics *hst; 3489 3490 /* Force a refresh of the fc_host stats including offload stats */ 3491 hst = qedf_fc_get_host_stats(host); 3492 3493 fcoe->qos_pri_set = true; 3494 fcoe->qos_pri = 3; /* Hard coded to 3 in driver */ 3495 3496 fcoe->ra_tov_set = true; 3497 fcoe->ra_tov = lport->r_a_tov; 3498 3499 fcoe->ed_tov_set = true; 3500 fcoe->ed_tov = lport->e_d_tov; 3501 3502 fcoe->npiv_state_set = true; 3503 fcoe->npiv_state = 1; /* NPIV always enabled */ 3504 3505 fcoe->num_npiv_ids_set = true; 3506 fcoe->num_npiv_ids = fc_host->npiv_vports_inuse; 3507 3508 /* Certain attributes we only want to set if we've selected an FCF */ 3509 if (qedf->ctlr.sel_fcf) { 3510 fcoe->switch_name_set = true; 3511 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name); 3512 } 3513 3514 fcoe->port_state_set = true; 3515 /* For qedf we're either link down or fabric attach */ 3516 if (lport->link_up) 3517 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC; 3518 else 3519 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE; 3520 3521 fcoe->link_failures_set = true; 3522 fcoe->link_failures = (u16)hst->link_failure_count; 3523 3524 fcoe->fcoe_txq_depth_set = true; 3525 fcoe->fcoe_rxq_depth_set = true; 3526 fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS; 3527 fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS; 3528 3529 fcoe->fcoe_rx_frames_set = true; 3530 fcoe->fcoe_rx_frames = hst->rx_frames; 3531 3532 fcoe->fcoe_tx_frames_set = true; 3533 fcoe->fcoe_tx_frames = hst->tx_frames; 3534 3535 fcoe->fcoe_rx_bytes_set = true; 3536 fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000; 3537 3538 fcoe->fcoe_tx_bytes_set = true; 3539 fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000; 3540 3541 fcoe->crc_count_set = true; 3542 fcoe->crc_count = hst->invalid_crc_count; 3543 3544 fcoe->tx_abts_set = true; 3545 fcoe->tx_abts = hst->fcp_packet_aborts; 3546 3547 fcoe->tx_lun_rst_set = true; 3548 fcoe->tx_lun_rst = qedf->lun_resets; 3549 3550 fcoe->abort_task_sets_set = true; 3551 fcoe->abort_task_sets = qedf->packet_aborts; 3552 3553 fcoe->scsi_busy_set = true; 3554 fcoe->scsi_busy = qedf->busy; 3555 3556 fcoe->scsi_tsk_full_set = true; 3557 fcoe->scsi_tsk_full = qedf->task_set_fulls; 3558 } 3559 3560 /* Generic TLV data callback */ 3561 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 3562 { 3563 struct qedf_ctx *qedf; 3564 3565 if (!dev) { 3566 QEDF_INFO(NULL, QEDF_LOG_EVT, 3567 "dev is NULL so ignoring get_generic_tlv_data request.\n"); 3568 return; 3569 } 3570 qedf = (struct qedf_ctx *)dev; 3571 3572 memset(data, 0, sizeof(struct qed_generic_tlvs)); 3573 ether_addr_copy(data->mac[0], qedf->mac); 3574 } 3575 3576 /* 3577 * Module Init/Remove 3578 */ 3579 3580 static int __init qedf_init(void) 3581 { 3582 int ret; 3583 3584 /* If debug=1 passed, set the default log mask */ 3585 if (qedf_debug == QEDF_LOG_DEFAULT) 3586 qedf_debug = QEDF_DEFAULT_LOG_MASK; 3587 3588 /* 3589 * Check that default prio for FIP/FCoE traffic is between 0..7 if a 3590 * value has been set 3591 */ 3592 if (qedf_default_prio > -1) 3593 if (qedf_default_prio > 7) { 3594 qedf_default_prio = QEDF_DEFAULT_PRIO; 3595 QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n", 3596 QEDF_DEFAULT_PRIO); 3597 } 3598 3599 /* Print driver banner */ 3600 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR, 3601 QEDF_VERSION); 3602 3603 /* Create kmem_cache for qedf_io_work structs */ 3604 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache", 3605 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL); 3606 if (qedf_io_work_cache == NULL) { 3607 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n"); 3608 goto err1; 3609 } 3610 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n", 3611 qedf_io_work_cache); 3612 3613 qed_ops = qed_get_fcoe_ops(); 3614 if (!qed_ops) { 3615 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n"); 3616 goto err1; 3617 } 3618 3619 #ifdef CONFIG_DEBUG_FS 3620 qedf_dbg_init("qedf"); 3621 #endif 3622 3623 qedf_fc_transport_template = 3624 fc_attach_transport(&qedf_fc_transport_fn); 3625 if (!qedf_fc_transport_template) { 3626 QEDF_ERR(NULL, "Could not register with FC transport\n"); 3627 goto err2; 3628 } 3629 3630 qedf_fc_vport_transport_template = 3631 fc_attach_transport(&qedf_fc_vport_transport_fn); 3632 if (!qedf_fc_vport_transport_template) { 3633 QEDF_ERR(NULL, "Could not register vport template with FC " 3634 "transport\n"); 3635 goto err3; 3636 } 3637 3638 qedf_io_wq = create_workqueue("qedf_io_wq"); 3639 if (!qedf_io_wq) { 3640 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n"); 3641 goto err4; 3642 } 3643 3644 qedf_cb_ops.get_login_failures = qedf_get_login_failures; 3645 3646 ret = pci_register_driver(&qedf_pci_driver); 3647 if (ret) { 3648 QEDF_ERR(NULL, "Failed to register driver\n"); 3649 goto err5; 3650 } 3651 3652 return 0; 3653 3654 err5: 3655 destroy_workqueue(qedf_io_wq); 3656 err4: 3657 fc_release_transport(qedf_fc_vport_transport_template); 3658 err3: 3659 fc_release_transport(qedf_fc_transport_template); 3660 err2: 3661 #ifdef CONFIG_DEBUG_FS 3662 qedf_dbg_exit(); 3663 #endif 3664 qed_put_fcoe_ops(); 3665 err1: 3666 return -EINVAL; 3667 } 3668 3669 static void __exit qedf_cleanup(void) 3670 { 3671 pci_unregister_driver(&qedf_pci_driver); 3672 3673 destroy_workqueue(qedf_io_wq); 3674 3675 fc_release_transport(qedf_fc_vport_transport_template); 3676 fc_release_transport(qedf_fc_transport_template); 3677 #ifdef CONFIG_DEBUG_FS 3678 qedf_dbg_exit(); 3679 #endif 3680 qed_put_fcoe_ops(); 3681 3682 kmem_cache_destroy(qedf_io_work_cache); 3683 } 3684 3685 MODULE_LICENSE("GPL"); 3686 MODULE_DESCRIPTION("QLogic QEDF 25/40/50/100Gb FCoE Driver"); 3687 MODULE_AUTHOR("QLogic Corporation"); 3688 MODULE_VERSION(QEDF_VERSION); 3689 module_init(qedf_init); 3690 module_exit(qedf_cleanup); 3691