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_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1054 &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_alloc_coherent(&qedf->pdev->dev, 1062 fcport->sq_pbl_size, 1063 &fcport->sq_pbl_dma, GFP_KERNEL); 1064 if (!fcport->sq_pbl) { 1065 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n"); 1066 rval = 1; 1067 goto out_free_sq; 1068 } 1069 1070 /* Create PBL */ 1071 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE; 1072 page = fcport->sq_dma; 1073 pbl = (u32 *)fcport->sq_pbl; 1074 1075 while (num_pages--) { 1076 *pbl = U64_LO(page); 1077 pbl++; 1078 *pbl = U64_HI(page); 1079 pbl++; 1080 page += QEDF_PAGE_SIZE; 1081 } 1082 1083 return rval; 1084 1085 out_free_sq: 1086 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq, 1087 fcport->sq_dma); 1088 out: 1089 return rval; 1090 } 1091 1092 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1093 { 1094 if (fcport->sq_pbl) 1095 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size, 1096 fcport->sq_pbl, fcport->sq_pbl_dma); 1097 if (fcport->sq) 1098 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1099 fcport->sq, fcport->sq_dma); 1100 } 1101 1102 static int qedf_offload_connection(struct qedf_ctx *qedf, 1103 struct qedf_rport *fcport) 1104 { 1105 struct qed_fcoe_params_offload conn_info; 1106 u32 port_id; 1107 int rval; 1108 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe)); 1109 1110 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection " 1111 "portid=%06x.\n", fcport->rdata->ids.port_id); 1112 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle, 1113 &fcport->fw_cid, &fcport->p_doorbell); 1114 if (rval) { 1115 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection " 1116 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1117 rval = 1; /* For some reason qed returns 0 on failure here */ 1118 goto out; 1119 } 1120 1121 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x " 1122 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id, 1123 fcport->fw_cid, fcport->handle); 1124 1125 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload)); 1126 1127 /* Fill in the offload connection info */ 1128 conn_info.sq_pbl_addr = fcport->sq_pbl_dma; 1129 1130 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl); 1131 conn_info.sq_next_page_addr = 1132 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8)); 1133 1134 /* Need to use our FCoE MAC for the offload session */ 1135 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr); 1136 1137 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr); 1138 1139 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size; 1140 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20; 1141 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */ 1142 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size; 1143 1144 /* Set VLAN data */ 1145 conn_info.vlan_tag = qedf->vlan_id << 1146 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT; 1147 conn_info.vlan_tag |= 1148 qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT; 1149 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK << 1150 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT); 1151 1152 /* Set host port source id */ 1153 port_id = fc_host_port_id(qedf->lport->host); 1154 fcport->sid = port_id; 1155 conn_info.s_id.addr_hi = (port_id & 0x000000FF); 1156 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1157 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1158 1159 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq; 1160 1161 /* Set remote port destination id */ 1162 port_id = fcport->rdata->rport->port_id; 1163 conn_info.d_id.addr_hi = (port_id & 0x000000FF); 1164 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1165 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1166 1167 conn_info.def_q_idx = 0; /* Default index for send queue? */ 1168 1169 /* Set FC-TAPE specific flags if needed */ 1170 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) { 1171 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, 1172 "Enable CONF, REC for portid=%06x.\n", 1173 fcport->rdata->ids.port_id); 1174 conn_info.flags |= 1 << 1175 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT; 1176 conn_info.flags |= 1177 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) << 1178 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT; 1179 } 1180 1181 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info); 1182 if (rval) { 1183 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection " 1184 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1185 goto out_free_conn; 1186 } else 1187 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload " 1188 "succeeded portid=%06x total_sqe=%d.\n", 1189 fcport->rdata->ids.port_id, total_sqe); 1190 1191 spin_lock_init(&fcport->rport_lock); 1192 atomic_set(&fcport->free_sqes, total_sqe); 1193 return 0; 1194 out_free_conn: 1195 qed_ops->release_conn(qedf->cdev, fcport->handle); 1196 out: 1197 return rval; 1198 } 1199 1200 #define QEDF_TERM_BUFF_SIZE 10 1201 static void qedf_upload_connection(struct qedf_ctx *qedf, 1202 struct qedf_rport *fcport) 1203 { 1204 void *term_params; 1205 dma_addr_t term_params_dma; 1206 1207 /* Term params needs to be a DMA coherent buffer as qed shared the 1208 * physical DMA address with the firmware. The buffer may be used in 1209 * the receive path so we may eventually have to move this. 1210 */ 1211 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, 1212 &term_params_dma, GFP_KERNEL); 1213 1214 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection " 1215 "port_id=%06x.\n", fcport->rdata->ids.port_id); 1216 1217 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma); 1218 qed_ops->release_conn(qedf->cdev, fcport->handle); 1219 1220 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params, 1221 term_params_dma); 1222 } 1223 1224 static void qedf_cleanup_fcport(struct qedf_ctx *qedf, 1225 struct qedf_rport *fcport) 1226 { 1227 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n", 1228 fcport->rdata->ids.port_id); 1229 1230 /* Flush any remaining i/o's before we upload the connection */ 1231 qedf_flush_active_ios(fcport, -1); 1232 1233 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) 1234 qedf_upload_connection(qedf, fcport); 1235 qedf_free_sq(qedf, fcport); 1236 fcport->rdata = NULL; 1237 fcport->qedf = NULL; 1238 } 1239 1240 /** 1241 * This event_callback is called after successful completion of libfc 1242 * initiated target login. qedf can proceed with initiating the session 1243 * establishment. 1244 */ 1245 static void qedf_rport_event_handler(struct fc_lport *lport, 1246 struct fc_rport_priv *rdata, 1247 enum fc_rport_event event) 1248 { 1249 struct qedf_ctx *qedf = lport_priv(lport); 1250 struct fc_rport *rport = rdata->rport; 1251 struct fc_rport_libfc_priv *rp; 1252 struct qedf_rport *fcport; 1253 u32 port_id; 1254 int rval; 1255 unsigned long flags; 1256 1257 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, " 1258 "port_id = 0x%x\n", event, rdata->ids.port_id); 1259 1260 switch (event) { 1261 case RPORT_EV_READY: 1262 if (!rport) { 1263 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n"); 1264 break; 1265 } 1266 1267 rp = rport->dd_data; 1268 fcport = (struct qedf_rport *)&rp[1]; 1269 fcport->qedf = qedf; 1270 1271 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) { 1272 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading " 1273 "portid=0x%x as max number of offloaded sessions " 1274 "reached.\n", rdata->ids.port_id); 1275 return; 1276 } 1277 1278 /* 1279 * Don't try to offload the session again. Can happen when we 1280 * get an ADISC 1281 */ 1282 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1283 QEDF_WARN(&(qedf->dbg_ctx), "Session already " 1284 "offloaded, portid=0x%x.\n", 1285 rdata->ids.port_id); 1286 return; 1287 } 1288 1289 if (rport->port_id == FC_FID_DIR_SERV) { 1290 /* 1291 * qedf_rport structure doesn't exist for 1292 * directory server. 1293 * We should not come here, as lport will 1294 * take care of fabric login 1295 */ 1296 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not " 1297 "exist for dir server port_id=%x\n", 1298 rdata->ids.port_id); 1299 break; 1300 } 1301 1302 if (rdata->spp_type != FC_TYPE_FCP) { 1303 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1304 "Not offloading since spp type isn't FCP\n"); 1305 break; 1306 } 1307 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1308 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1309 "Not FCP target so not offloading\n"); 1310 break; 1311 } 1312 1313 fcport->rdata = rdata; 1314 fcport->rport = rport; 1315 1316 rval = qedf_alloc_sq(qedf, fcport); 1317 if (rval) { 1318 qedf_cleanup_fcport(qedf, fcport); 1319 break; 1320 } 1321 1322 /* Set device type */ 1323 if (rdata->flags & FC_RP_FLAGS_RETRY && 1324 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET && 1325 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) { 1326 fcport->dev_type = QEDF_RPORT_TYPE_TAPE; 1327 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1328 "portid=%06x is a TAPE device.\n", 1329 rdata->ids.port_id); 1330 } else { 1331 fcport->dev_type = QEDF_RPORT_TYPE_DISK; 1332 } 1333 1334 rval = qedf_offload_connection(qedf, fcport); 1335 if (rval) { 1336 qedf_cleanup_fcport(qedf, fcport); 1337 break; 1338 } 1339 1340 /* Add fcport to list of qedf_ctx list of offloaded ports */ 1341 spin_lock_irqsave(&qedf->hba_lock, flags); 1342 list_add_rcu(&fcport->peers, &qedf->fcports); 1343 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1344 1345 /* 1346 * Set the session ready bit to let everyone know that this 1347 * connection is ready for I/O 1348 */ 1349 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags); 1350 atomic_inc(&qedf->num_offloads); 1351 1352 break; 1353 case RPORT_EV_LOGO: 1354 case RPORT_EV_FAILED: 1355 case RPORT_EV_STOP: 1356 port_id = rdata->ids.port_id; 1357 if (port_id == FC_FID_DIR_SERV) 1358 break; 1359 1360 if (!rport) { 1361 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1362 "port_id=%x - rport notcreated Yet!!\n", port_id); 1363 break; 1364 } 1365 rp = rport->dd_data; 1366 /* 1367 * Perform session upload. Note that rdata->peers is already 1368 * removed from disc->rports list before we get this event. 1369 */ 1370 fcport = (struct qedf_rport *)&rp[1]; 1371 1372 /* Only free this fcport if it is offloaded already */ 1373 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1374 set_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags); 1375 qedf_cleanup_fcport(qedf, fcport); 1376 1377 /* 1378 * Remove fcport to list of qedf_ctx list of offloaded 1379 * ports 1380 */ 1381 spin_lock_irqsave(&qedf->hba_lock, flags); 1382 list_del_rcu(&fcport->peers); 1383 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1384 1385 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1386 &fcport->flags); 1387 atomic_dec(&qedf->num_offloads); 1388 } 1389 1390 break; 1391 1392 case RPORT_EV_NONE: 1393 break; 1394 } 1395 } 1396 1397 static void qedf_abort_io(struct fc_lport *lport) 1398 { 1399 /* NO-OP but need to fill in the template */ 1400 } 1401 1402 static void qedf_fcp_cleanup(struct fc_lport *lport) 1403 { 1404 /* 1405 * NO-OP but need to fill in template to prevent a NULL 1406 * function pointer dereference during link down. I/Os 1407 * will be flushed when port is uploaded. 1408 */ 1409 } 1410 1411 static struct libfc_function_template qedf_lport_template = { 1412 .frame_send = qedf_xmit, 1413 .fcp_abort_io = qedf_abort_io, 1414 .fcp_cleanup = qedf_fcp_cleanup, 1415 .rport_event_callback = qedf_rport_event_handler, 1416 .elsct_send = qedf_elsct_send, 1417 }; 1418 1419 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf) 1420 { 1421 fcoe_ctlr_init(&qedf->ctlr, FIP_ST_AUTO); 1422 1423 qedf->ctlr.send = qedf_fip_send; 1424 qedf->ctlr.get_src_addr = qedf_get_src_mac; 1425 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac); 1426 } 1427 1428 static void qedf_setup_fdmi(struct qedf_ctx *qedf) 1429 { 1430 struct fc_lport *lport = qedf->lport; 1431 struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host); 1432 u8 buf[8]; 1433 int i, pos; 1434 1435 /* 1436 * fdmi_enabled needs to be set for libfc to execute FDMI registration. 1437 */ 1438 lport->fdmi_enabled = 1; 1439 1440 /* 1441 * Setup the necessary fc_host attributes to that will be used to fill 1442 * in the FDMI information. 1443 */ 1444 1445 /* Get the PCI-e Device Serial Number Capability */ 1446 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN); 1447 if (pos) { 1448 pos += 4; 1449 for (i = 0; i < 8; i++) 1450 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]); 1451 1452 snprintf(fc_host->serial_number, 1453 sizeof(fc_host->serial_number), 1454 "%02X%02X%02X%02X%02X%02X%02X%02X", 1455 buf[7], buf[6], buf[5], buf[4], 1456 buf[3], buf[2], buf[1], buf[0]); 1457 } else 1458 snprintf(fc_host->serial_number, 1459 sizeof(fc_host->serial_number), "Unknown"); 1460 1461 snprintf(fc_host->manufacturer, 1462 sizeof(fc_host->manufacturer), "%s", "Cavium Inc."); 1463 1464 snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000"); 1465 1466 snprintf(fc_host->model_description, sizeof(fc_host->model_description), 1467 "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller" 1468 "(FCoE)"); 1469 1470 snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version), 1471 "Rev %d", qedf->pdev->revision); 1472 1473 snprintf(fc_host->driver_version, sizeof(fc_host->driver_version), 1474 "%s", QEDF_VERSION); 1475 1476 snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version), 1477 "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION, 1478 FW_REVISION_VERSION, FW_ENGINEERING_VERSION); 1479 } 1480 1481 static int qedf_lport_setup(struct qedf_ctx *qedf) 1482 { 1483 struct fc_lport *lport = qedf->lport; 1484 1485 lport->link_up = 0; 1486 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1487 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1488 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1489 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1490 lport->boot_time = jiffies; 1491 lport->e_d_tov = 2 * 1000; 1492 lport->r_a_tov = 10 * 1000; 1493 1494 /* Set NPIV support */ 1495 lport->does_npiv = 1; 1496 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV; 1497 1498 fc_set_wwnn(lport, qedf->wwnn); 1499 fc_set_wwpn(lport, qedf->wwpn); 1500 1501 fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0); 1502 1503 /* Allocate the exchange manager */ 1504 fc_exch_mgr_alloc(lport, FC_CLASS_3, qedf->max_scsi_xid + 1, 1505 qedf->max_els_xid, NULL); 1506 1507 if (fc_lport_init_stats(lport)) 1508 return -ENOMEM; 1509 1510 /* Finish lport config */ 1511 fc_lport_config(lport); 1512 1513 /* Set max frame size */ 1514 fc_set_mfs(lport, QEDF_MFS); 1515 fc_host_maxframe_size(lport->host) = lport->mfs; 1516 1517 /* Set default dev_loss_tmo based on module parameter */ 1518 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo; 1519 1520 /* Set symbolic node name */ 1521 snprintf(fc_host_symbolic_name(lport->host), 256, 1522 "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION); 1523 1524 qedf_setup_fdmi(qedf); 1525 1526 return 0; 1527 } 1528 1529 /* 1530 * NPIV functions 1531 */ 1532 1533 static int qedf_vport_libfc_config(struct fc_vport *vport, 1534 struct fc_lport *lport) 1535 { 1536 lport->link_up = 0; 1537 lport->qfull = 0; 1538 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1539 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1540 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1541 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1542 lport->boot_time = jiffies; 1543 lport->e_d_tov = 2 * 1000; 1544 lport->r_a_tov = 10 * 1000; 1545 lport->does_npiv = 1; /* Temporary until we add NPIV support */ 1546 1547 /* Allocate stats for vport */ 1548 if (fc_lport_init_stats(lport)) 1549 return -ENOMEM; 1550 1551 /* Finish lport config */ 1552 fc_lport_config(lport); 1553 1554 /* offload related configuration */ 1555 lport->crc_offload = 0; 1556 lport->seq_offload = 0; 1557 lport->lro_enabled = 0; 1558 lport->lro_xid = 0; 1559 lport->lso_max = 0; 1560 1561 return 0; 1562 } 1563 1564 static int qedf_vport_create(struct fc_vport *vport, bool disabled) 1565 { 1566 struct Scsi_Host *shost = vport_to_shost(vport); 1567 struct fc_lport *n_port = shost_priv(shost); 1568 struct fc_lport *vn_port; 1569 struct qedf_ctx *base_qedf = lport_priv(n_port); 1570 struct qedf_ctx *vport_qedf; 1571 1572 char buf[32]; 1573 int rc = 0; 1574 1575 rc = fcoe_validate_vport_create(vport); 1576 if (rc) { 1577 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1578 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, " 1579 "WWPN (0x%s) already exists.\n", buf); 1580 goto err1; 1581 } 1582 1583 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) { 1584 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport " 1585 "because link is not up.\n"); 1586 rc = -EIO; 1587 goto err1; 1588 } 1589 1590 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx)); 1591 if (!vn_port) { 1592 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport " 1593 "for vport.\n"); 1594 rc = -ENOMEM; 1595 goto err1; 1596 } 1597 1598 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1599 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n", 1600 buf); 1601 1602 /* Copy some fields from base_qedf */ 1603 vport_qedf = lport_priv(vn_port); 1604 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx)); 1605 1606 /* Set qedf data specific to this vport */ 1607 vport_qedf->lport = vn_port; 1608 /* Use same hba_lock as base_qedf */ 1609 vport_qedf->hba_lock = base_qedf->hba_lock; 1610 vport_qedf->pdev = base_qedf->pdev; 1611 vport_qedf->cmd_mgr = base_qedf->cmd_mgr; 1612 init_completion(&vport_qedf->flogi_compl); 1613 INIT_LIST_HEAD(&vport_qedf->fcports); 1614 1615 rc = qedf_vport_libfc_config(vport, vn_port); 1616 if (rc) { 1617 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory " 1618 "for lport stats.\n"); 1619 goto err2; 1620 } 1621 1622 fc_set_wwnn(vn_port, vport->node_name); 1623 fc_set_wwpn(vn_port, vport->port_name); 1624 vport_qedf->wwnn = vn_port->wwnn; 1625 vport_qedf->wwpn = vn_port->wwpn; 1626 1627 vn_port->host->transportt = qedf_fc_vport_transport_template; 1628 vn_port->host->can_queue = QEDF_MAX_ELS_XID; 1629 vn_port->host->max_lun = qedf_max_lun; 1630 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD; 1631 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN; 1632 1633 rc = scsi_add_host(vn_port->host, &vport->dev); 1634 if (rc) { 1635 QEDF_WARN(&(base_qedf->dbg_ctx), "Error adding Scsi_Host.\n"); 1636 goto err2; 1637 } 1638 1639 /* Set default dev_loss_tmo based on module parameter */ 1640 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo; 1641 1642 /* Init libfc stuffs */ 1643 memcpy(&vn_port->tt, &qedf_lport_template, 1644 sizeof(qedf_lport_template)); 1645 fc_exch_init(vn_port); 1646 fc_elsct_init(vn_port); 1647 fc_lport_init(vn_port); 1648 fc_disc_init(vn_port); 1649 fc_disc_config(vn_port, vn_port); 1650 1651 1652 /* Allocate the exchange manager */ 1653 shost = vport_to_shost(vport); 1654 n_port = shost_priv(shost); 1655 fc_exch_mgr_list_clone(n_port, vn_port); 1656 1657 /* Set max frame size */ 1658 fc_set_mfs(vn_port, QEDF_MFS); 1659 1660 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN; 1661 1662 if (disabled) { 1663 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1664 } else { 1665 vn_port->boot_time = jiffies; 1666 fc_fabric_login(vn_port); 1667 fc_vport_setlink(vn_port); 1668 } 1669 1670 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n", 1671 vn_port); 1672 1673 /* Set up debug context for vport */ 1674 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no; 1675 vport_qedf->dbg_ctx.pdev = base_qedf->pdev; 1676 1677 err2: 1678 scsi_host_put(vn_port->host); 1679 err1: 1680 return rc; 1681 } 1682 1683 static int qedf_vport_destroy(struct fc_vport *vport) 1684 { 1685 struct Scsi_Host *shost = vport_to_shost(vport); 1686 struct fc_lport *n_port = shost_priv(shost); 1687 struct fc_lport *vn_port = vport->dd_data; 1688 struct qedf_ctx *qedf = lport_priv(vn_port); 1689 1690 if (!qedf) { 1691 QEDF_ERR(NULL, "qedf is NULL.\n"); 1692 goto out; 1693 } 1694 1695 /* Set unloading bit on vport qedf_ctx to prevent more I/O */ 1696 set_bit(QEDF_UNLOADING, &qedf->flags); 1697 1698 mutex_lock(&n_port->lp_mutex); 1699 list_del(&vn_port->list); 1700 mutex_unlock(&n_port->lp_mutex); 1701 1702 fc_fabric_logoff(vn_port); 1703 fc_lport_destroy(vn_port); 1704 1705 /* Detach from scsi-ml */ 1706 fc_remove_host(vn_port->host); 1707 scsi_remove_host(vn_port->host); 1708 1709 /* 1710 * Only try to release the exchange manager if the vn_port 1711 * configuration is complete. 1712 */ 1713 if (vn_port->state == LPORT_ST_READY) 1714 fc_exch_mgr_free(vn_port); 1715 1716 /* Free memory used by statistical counters */ 1717 fc_lport_free_stats(vn_port); 1718 1719 /* Release Scsi_Host */ 1720 if (vn_port->host) 1721 scsi_host_put(vn_port->host); 1722 1723 out: 1724 return 0; 1725 } 1726 1727 static int qedf_vport_disable(struct fc_vport *vport, bool disable) 1728 { 1729 struct fc_lport *lport = vport->dd_data; 1730 1731 if (disable) { 1732 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1733 fc_fabric_logoff(lport); 1734 } else { 1735 lport->boot_time = jiffies; 1736 fc_fabric_login(lport); 1737 fc_vport_setlink(lport); 1738 } 1739 return 0; 1740 } 1741 1742 /* 1743 * During removal we need to wait for all the vports associated with a port 1744 * to be destroyed so we avoid a race condition where libfc is still trying 1745 * to reap vports while the driver remove function has already reaped the 1746 * driver contexts associated with the physical port. 1747 */ 1748 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf) 1749 { 1750 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host); 1751 1752 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 1753 "Entered.\n"); 1754 while (fc_host->npiv_vports_inuse > 0) { 1755 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 1756 "Waiting for all vports to be reaped.\n"); 1757 msleep(1000); 1758 } 1759 } 1760 1761 /** 1762 * qedf_fcoe_reset - Resets the fcoe 1763 * 1764 * @shost: shost the reset is from 1765 * 1766 * Returns: always 0 1767 */ 1768 static int qedf_fcoe_reset(struct Scsi_Host *shost) 1769 { 1770 struct fc_lport *lport = shost_priv(shost); 1771 1772 qedf_ctx_soft_reset(lport); 1773 return 0; 1774 } 1775 1776 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host 1777 *shost) 1778 { 1779 struct fc_host_statistics *qedf_stats; 1780 struct fc_lport *lport = shost_priv(shost); 1781 struct qedf_ctx *qedf = lport_priv(lport); 1782 struct qed_fcoe_stats *fw_fcoe_stats; 1783 1784 qedf_stats = fc_get_host_stats(shost); 1785 1786 /* We don't collect offload stats for specific NPIV ports */ 1787 if (lport->vport) 1788 goto out; 1789 1790 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL); 1791 if (!fw_fcoe_stats) { 1792 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for " 1793 "fw_fcoe_stats.\n"); 1794 goto out; 1795 } 1796 1797 mutex_lock(&qedf->stats_mutex); 1798 1799 /* Query firmware for offload stats */ 1800 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats); 1801 1802 /* 1803 * The expectation is that we add our offload stats to the stats 1804 * being maintained by libfc each time the fc_get_host_status callback 1805 * is invoked. The additions are not carried over for each call to 1806 * the fc_get_host_stats callback. 1807 */ 1808 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt + 1809 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt + 1810 fw_fcoe_stats->fcoe_tx_other_pkt_cnt; 1811 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt + 1812 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt + 1813 fw_fcoe_stats->fcoe_rx_other_pkt_cnt; 1814 qedf_stats->fcp_input_megabytes += 1815 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000); 1816 qedf_stats->fcp_output_megabytes += 1817 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000); 1818 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4; 1819 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4; 1820 qedf_stats->invalid_crc_count += 1821 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt; 1822 qedf_stats->dumped_frames = 1823 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 1824 qedf_stats->error_frames += 1825 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 1826 qedf_stats->fcp_input_requests += qedf->input_requests; 1827 qedf_stats->fcp_output_requests += qedf->output_requests; 1828 qedf_stats->fcp_control_requests += qedf->control_requests; 1829 qedf_stats->fcp_packet_aborts += qedf->packet_aborts; 1830 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures; 1831 1832 mutex_unlock(&qedf->stats_mutex); 1833 kfree(fw_fcoe_stats); 1834 out: 1835 return qedf_stats; 1836 } 1837 1838 static struct fc_function_template qedf_fc_transport_fn = { 1839 .show_host_node_name = 1, 1840 .show_host_port_name = 1, 1841 .show_host_supported_classes = 1, 1842 .show_host_supported_fc4s = 1, 1843 .show_host_active_fc4s = 1, 1844 .show_host_maxframe_size = 1, 1845 1846 .show_host_port_id = 1, 1847 .show_host_supported_speeds = 1, 1848 .get_host_speed = fc_get_host_speed, 1849 .show_host_speed = 1, 1850 .show_host_port_type = 1, 1851 .get_host_port_state = fc_get_host_port_state, 1852 .show_host_port_state = 1, 1853 .show_host_symbolic_name = 1, 1854 1855 /* 1856 * Tell FC transport to allocate enough space to store the backpointer 1857 * for the associate qedf_rport struct. 1858 */ 1859 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 1860 sizeof(struct qedf_rport)), 1861 .show_rport_maxframe_size = 1, 1862 .show_rport_supported_classes = 1, 1863 .show_host_fabric_name = 1, 1864 .show_starget_node_name = 1, 1865 .show_starget_port_name = 1, 1866 .show_starget_port_id = 1, 1867 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 1868 .show_rport_dev_loss_tmo = 1, 1869 .get_fc_host_stats = qedf_fc_get_host_stats, 1870 .issue_fc_host_lip = qedf_fcoe_reset, 1871 .vport_create = qedf_vport_create, 1872 .vport_delete = qedf_vport_destroy, 1873 .vport_disable = qedf_vport_disable, 1874 .bsg_request = fc_lport_bsg_request, 1875 }; 1876 1877 static struct fc_function_template qedf_fc_vport_transport_fn = { 1878 .show_host_node_name = 1, 1879 .show_host_port_name = 1, 1880 .show_host_supported_classes = 1, 1881 .show_host_supported_fc4s = 1, 1882 .show_host_active_fc4s = 1, 1883 .show_host_maxframe_size = 1, 1884 .show_host_port_id = 1, 1885 .show_host_supported_speeds = 1, 1886 .get_host_speed = fc_get_host_speed, 1887 .show_host_speed = 1, 1888 .show_host_port_type = 1, 1889 .get_host_port_state = fc_get_host_port_state, 1890 .show_host_port_state = 1, 1891 .show_host_symbolic_name = 1, 1892 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 1893 sizeof(struct qedf_rport)), 1894 .show_rport_maxframe_size = 1, 1895 .show_rport_supported_classes = 1, 1896 .show_host_fabric_name = 1, 1897 .show_starget_node_name = 1, 1898 .show_starget_port_name = 1, 1899 .show_starget_port_id = 1, 1900 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 1901 .show_rport_dev_loss_tmo = 1, 1902 .get_fc_host_stats = fc_get_host_stats, 1903 .issue_fc_host_lip = qedf_fcoe_reset, 1904 .bsg_request = fc_lport_bsg_request, 1905 }; 1906 1907 static bool qedf_fp_has_work(struct qedf_fastpath *fp) 1908 { 1909 struct qedf_ctx *qedf = fp->qedf; 1910 struct global_queue *que; 1911 struct qed_sb_info *sb_info = fp->sb_info; 1912 struct status_block_e4 *sb = sb_info->sb_virt; 1913 u16 prod_idx; 1914 1915 /* Get the pointer to the global CQ this completion is on */ 1916 que = qedf->global_queues[fp->sb_id]; 1917 1918 /* Be sure all responses have been written to PI */ 1919 rmb(); 1920 1921 /* Get the current firmware producer index */ 1922 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 1923 1924 return (que->cq_prod_idx != prod_idx); 1925 } 1926 1927 /* 1928 * Interrupt handler code. 1929 */ 1930 1931 /* Process completion queue and copy CQE contents for deferred processesing 1932 * 1933 * Return true if we should wake the I/O thread, false if not. 1934 */ 1935 static bool qedf_process_completions(struct qedf_fastpath *fp) 1936 { 1937 struct qedf_ctx *qedf = fp->qedf; 1938 struct qed_sb_info *sb_info = fp->sb_info; 1939 struct status_block_e4 *sb = sb_info->sb_virt; 1940 struct global_queue *que; 1941 u16 prod_idx; 1942 struct fcoe_cqe *cqe; 1943 struct qedf_io_work *io_work; 1944 int num_handled = 0; 1945 unsigned int cpu; 1946 struct qedf_ioreq *io_req = NULL; 1947 u16 xid; 1948 u16 new_cqes; 1949 u32 comp_type; 1950 1951 /* Get the current firmware producer index */ 1952 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 1953 1954 /* Get the pointer to the global CQ this completion is on */ 1955 que = qedf->global_queues[fp->sb_id]; 1956 1957 /* Calculate the amount of new elements since last processing */ 1958 new_cqes = (prod_idx >= que->cq_prod_idx) ? 1959 (prod_idx - que->cq_prod_idx) : 1960 0x10000 - que->cq_prod_idx + prod_idx; 1961 1962 /* Save producer index */ 1963 que->cq_prod_idx = prod_idx; 1964 1965 while (new_cqes) { 1966 fp->completions++; 1967 num_handled++; 1968 cqe = &que->cq[que->cq_cons_idx]; 1969 1970 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 1971 FCOE_CQE_CQE_TYPE_MASK; 1972 1973 /* 1974 * Process unsolicited CQEs directly in the interrupt handler 1975 * sine we need the fastpath ID 1976 */ 1977 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) { 1978 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL, 1979 "Unsolicated CQE.\n"); 1980 qedf_process_unsol_compl(qedf, fp->sb_id, cqe); 1981 /* 1982 * Don't add a work list item. Increment consumer 1983 * consumer index and move on. 1984 */ 1985 goto inc_idx; 1986 } 1987 1988 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 1989 io_req = &qedf->cmd_mgr->cmds[xid]; 1990 1991 /* 1992 * Figure out which percpu thread we should queue this I/O 1993 * on. 1994 */ 1995 if (!io_req) 1996 /* If there is not io_req assocated with this CQE 1997 * just queue it on CPU 0 1998 */ 1999 cpu = 0; 2000 else { 2001 cpu = io_req->cpu; 2002 io_req->int_cpu = smp_processor_id(); 2003 } 2004 2005 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC); 2006 if (!io_work) { 2007 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate " 2008 "work for I/O completion.\n"); 2009 continue; 2010 } 2011 memset(io_work, 0, sizeof(struct qedf_io_work)); 2012 2013 INIT_WORK(&io_work->work, qedf_fp_io_handler); 2014 2015 /* Copy contents of CQE for deferred processing */ 2016 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe)); 2017 2018 io_work->qedf = fp->qedf; 2019 io_work->fp = NULL; /* Only used for unsolicited frames */ 2020 2021 queue_work_on(cpu, qedf_io_wq, &io_work->work); 2022 2023 inc_idx: 2024 que->cq_cons_idx++; 2025 if (que->cq_cons_idx == fp->cq_num_entries) 2026 que->cq_cons_idx = 0; 2027 new_cqes--; 2028 } 2029 2030 return true; 2031 } 2032 2033 2034 /* MSI-X fastpath handler code */ 2035 static irqreturn_t qedf_msix_handler(int irq, void *dev_id) 2036 { 2037 struct qedf_fastpath *fp = dev_id; 2038 2039 if (!fp) { 2040 QEDF_ERR(NULL, "fp is null.\n"); 2041 return IRQ_HANDLED; 2042 } 2043 if (!fp->sb_info) { 2044 QEDF_ERR(NULL, "fp->sb_info in null."); 2045 return IRQ_HANDLED; 2046 } 2047 2048 /* 2049 * Disable interrupts for this status block while we process new 2050 * completions 2051 */ 2052 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/); 2053 2054 while (1) { 2055 qedf_process_completions(fp); 2056 2057 if (qedf_fp_has_work(fp) == 0) { 2058 /* Update the sb information */ 2059 qed_sb_update_sb_idx(fp->sb_info); 2060 2061 /* Check for more work */ 2062 rmb(); 2063 2064 if (qedf_fp_has_work(fp) == 0) { 2065 /* Re-enable interrupts */ 2066 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 2067 return IRQ_HANDLED; 2068 } 2069 } 2070 } 2071 2072 /* Do we ever want to break out of above loop? */ 2073 return IRQ_HANDLED; 2074 } 2075 2076 /* simd handler for MSI/INTa */ 2077 static void qedf_simd_int_handler(void *cookie) 2078 { 2079 /* Cookie is qedf_ctx struct */ 2080 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2081 2082 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf); 2083 } 2084 2085 #define QEDF_SIMD_HANDLER_NUM 0 2086 static void qedf_sync_free_irqs(struct qedf_ctx *qedf) 2087 { 2088 int i; 2089 2090 if (qedf->int_info.msix_cnt) { 2091 for (i = 0; i < qedf->int_info.used_cnt; i++) { 2092 synchronize_irq(qedf->int_info.msix[i].vector); 2093 irq_set_affinity_hint(qedf->int_info.msix[i].vector, 2094 NULL); 2095 irq_set_affinity_notifier(qedf->int_info.msix[i].vector, 2096 NULL); 2097 free_irq(qedf->int_info.msix[i].vector, 2098 &qedf->fp_array[i]); 2099 } 2100 } else 2101 qed_ops->common->simd_handler_clean(qedf->cdev, 2102 QEDF_SIMD_HANDLER_NUM); 2103 2104 qedf->int_info.used_cnt = 0; 2105 qed_ops->common->set_fp_int(qedf->cdev, 0); 2106 } 2107 2108 static int qedf_request_msix_irq(struct qedf_ctx *qedf) 2109 { 2110 int i, rc, cpu; 2111 2112 cpu = cpumask_first(cpu_online_mask); 2113 for (i = 0; i < qedf->num_queues; i++) { 2114 rc = request_irq(qedf->int_info.msix[i].vector, 2115 qedf_msix_handler, 0, "qedf", &qedf->fp_array[i]); 2116 2117 if (rc) { 2118 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n"); 2119 qedf_sync_free_irqs(qedf); 2120 return rc; 2121 } 2122 2123 qedf->int_info.used_cnt++; 2124 rc = irq_set_affinity_hint(qedf->int_info.msix[i].vector, 2125 get_cpu_mask(cpu)); 2126 cpu = cpumask_next(cpu, cpu_online_mask); 2127 } 2128 2129 return 0; 2130 } 2131 2132 static int qedf_setup_int(struct qedf_ctx *qedf) 2133 { 2134 int rc = 0; 2135 2136 /* 2137 * Learn interrupt configuration 2138 */ 2139 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus()); 2140 if (rc <= 0) 2141 return 0; 2142 2143 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info); 2144 if (rc) 2145 return 0; 2146 2147 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = " 2148 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt, 2149 num_online_cpus()); 2150 2151 if (qedf->int_info.msix_cnt) 2152 return qedf_request_msix_irq(qedf); 2153 2154 qed_ops->common->simd_handler_config(qedf->cdev, &qedf, 2155 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler); 2156 qedf->int_info.used_cnt = 1; 2157 2158 QEDF_ERR(&qedf->dbg_ctx, "Only MSI-X supported. Failing probe.\n"); 2159 return -EINVAL; 2160 } 2161 2162 /* Main function for libfc frame reception */ 2163 static void qedf_recv_frame(struct qedf_ctx *qedf, 2164 struct sk_buff *skb) 2165 { 2166 u32 fr_len; 2167 struct fc_lport *lport; 2168 struct fc_frame_header *fh; 2169 struct fcoe_crc_eof crc_eof; 2170 struct fc_frame *fp; 2171 u8 *mac = NULL; 2172 u8 *dest_mac = NULL; 2173 struct fcoe_hdr *hp; 2174 struct qedf_rport *fcport; 2175 struct fc_lport *vn_port; 2176 u32 f_ctl; 2177 2178 lport = qedf->lport; 2179 if (lport == NULL || lport->state == LPORT_ST_DISABLED) { 2180 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n"); 2181 kfree_skb(skb); 2182 return; 2183 } 2184 2185 if (skb_is_nonlinear(skb)) 2186 skb_linearize(skb); 2187 mac = eth_hdr(skb)->h_source; 2188 dest_mac = eth_hdr(skb)->h_dest; 2189 2190 /* Pull the header */ 2191 hp = (struct fcoe_hdr *)skb->data; 2192 fh = (struct fc_frame_header *) skb_transport_header(skb); 2193 skb_pull(skb, sizeof(struct fcoe_hdr)); 2194 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 2195 2196 fp = (struct fc_frame *)skb; 2197 fc_frame_init(fp); 2198 fr_dev(fp) = lport; 2199 fr_sof(fp) = hp->fcoe_sof; 2200 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 2201 kfree_skb(skb); 2202 return; 2203 } 2204 fr_eof(fp) = crc_eof.fcoe_eof; 2205 fr_crc(fp) = crc_eof.fcoe_crc32; 2206 if (pskb_trim(skb, fr_len)) { 2207 kfree_skb(skb); 2208 return; 2209 } 2210 2211 fh = fc_frame_header_get(fp); 2212 2213 /* 2214 * Invalid frame filters. 2215 */ 2216 2217 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 2218 fh->fh_type == FC_TYPE_FCP) { 2219 /* Drop FCP data. We dont this in L2 path */ 2220 kfree_skb(skb); 2221 return; 2222 } 2223 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 2224 fh->fh_type == FC_TYPE_ELS) { 2225 switch (fc_frame_payload_op(fp)) { 2226 case ELS_LOGO: 2227 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 2228 /* drop non-FIP LOGO */ 2229 kfree_skb(skb); 2230 return; 2231 } 2232 break; 2233 } 2234 } 2235 2236 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 2237 /* Drop incoming ABTS */ 2238 kfree_skb(skb); 2239 return; 2240 } 2241 2242 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { 2243 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2244 "FC frame d_id mismatch with MAC %pM.\n", dest_mac); 2245 kfree_skb(skb); 2246 return; 2247 } 2248 2249 if (qedf->ctlr.state) { 2250 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) { 2251 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2252 "Wrong source address: mac:%pM dest_addr:%pM.\n", 2253 mac, qedf->ctlr.dest_addr); 2254 kfree_skb(skb); 2255 return; 2256 } 2257 } 2258 2259 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 2260 2261 /* 2262 * If the destination ID from the frame header does not match what we 2263 * have on record for lport and the search for a NPIV port came up 2264 * empty then this is not addressed to our port so simply drop it. 2265 */ 2266 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { 2267 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2268 "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n", 2269 lport->port_id, ntoh24(fh->fh_d_id)); 2270 kfree_skb(skb); 2271 return; 2272 } 2273 2274 f_ctl = ntoh24(fh->fh_f_ctl); 2275 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) && 2276 (f_ctl & FC_FC_EX_CTX)) { 2277 /* Drop incoming ABTS response that has both SEQ/EX CTX set */ 2278 kfree_skb(skb); 2279 return; 2280 } 2281 2282 /* 2283 * If a connection is uploading, drop incoming FCoE frames as there 2284 * is a small window where we could try to return a frame while libfc 2285 * is trying to clean things up. 2286 */ 2287 2288 /* Get fcport associated with d_id if it exists */ 2289 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 2290 2291 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 2292 &fcport->flags)) { 2293 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2294 "Connection uploading, dropping fp=%p.\n", fp); 2295 kfree_skb(skb); 2296 return; 2297 } 2298 2299 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: " 2300 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp, 2301 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, 2302 fh->fh_type); 2303 if (qedf_dump_frames) 2304 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 2305 1, skb->data, skb->len, false); 2306 fc_exch_recv(lport, fp); 2307 } 2308 2309 static void qedf_ll2_process_skb(struct work_struct *work) 2310 { 2311 struct qedf_skb_work *skb_work = 2312 container_of(work, struct qedf_skb_work, work); 2313 struct qedf_ctx *qedf = skb_work->qedf; 2314 struct sk_buff *skb = skb_work->skb; 2315 struct ethhdr *eh; 2316 2317 if (!qedf) { 2318 QEDF_ERR(NULL, "qedf is NULL\n"); 2319 goto err_out; 2320 } 2321 2322 eh = (struct ethhdr *)skb->data; 2323 2324 /* Undo VLAN encapsulation */ 2325 if (eh->h_proto == htons(ETH_P_8021Q)) { 2326 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); 2327 eh = skb_pull(skb, VLAN_HLEN); 2328 skb_reset_mac_header(skb); 2329 } 2330 2331 /* 2332 * Process either a FIP frame or FCoE frame based on the 2333 * protocol value. If it's not either just drop the 2334 * frame. 2335 */ 2336 if (eh->h_proto == htons(ETH_P_FIP)) { 2337 qedf_fip_recv(qedf, skb); 2338 goto out; 2339 } else if (eh->h_proto == htons(ETH_P_FCOE)) { 2340 __skb_pull(skb, ETH_HLEN); 2341 qedf_recv_frame(qedf, skb); 2342 goto out; 2343 } else 2344 goto err_out; 2345 2346 err_out: 2347 kfree_skb(skb); 2348 out: 2349 kfree(skb_work); 2350 return; 2351 } 2352 2353 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb, 2354 u32 arg1, u32 arg2) 2355 { 2356 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2357 struct qedf_skb_work *skb_work; 2358 2359 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC); 2360 if (!skb_work) { 2361 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so " 2362 "dropping frame.\n"); 2363 kfree_skb(skb); 2364 return 0; 2365 } 2366 2367 INIT_WORK(&skb_work->work, qedf_ll2_process_skb); 2368 skb_work->skb = skb; 2369 skb_work->qedf = qedf; 2370 queue_work(qedf->ll2_recv_wq, &skb_work->work); 2371 2372 return 0; 2373 } 2374 2375 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = { 2376 .rx_cb = qedf_ll2_rx, 2377 .tx_cb = NULL, 2378 }; 2379 2380 /* Main thread to process I/O completions */ 2381 void qedf_fp_io_handler(struct work_struct *work) 2382 { 2383 struct qedf_io_work *io_work = 2384 container_of(work, struct qedf_io_work, work); 2385 u32 comp_type; 2386 2387 /* 2388 * Deferred part of unsolicited CQE sends 2389 * frame to libfc. 2390 */ 2391 comp_type = (io_work->cqe.cqe_data >> 2392 FCOE_CQE_CQE_TYPE_SHIFT) & 2393 FCOE_CQE_CQE_TYPE_MASK; 2394 if (comp_type == FCOE_UNSOLIC_CQE_TYPE && 2395 io_work->fp) 2396 fc_exch_recv(io_work->qedf->lport, io_work->fp); 2397 else 2398 qedf_process_cqe(io_work->qedf, &io_work->cqe); 2399 2400 kfree(io_work); 2401 } 2402 2403 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf, 2404 struct qed_sb_info *sb_info, u16 sb_id) 2405 { 2406 struct status_block_e4 *sb_virt; 2407 dma_addr_t sb_phys; 2408 int ret; 2409 2410 sb_virt = dma_alloc_coherent(&qedf->pdev->dev, 2411 sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL); 2412 2413 if (!sb_virt) { 2414 QEDF_ERR(&(qedf->dbg_ctx), "Status block allocation failed " 2415 "for id = %d.\n", sb_id); 2416 return -ENOMEM; 2417 } 2418 2419 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys, 2420 sb_id, QED_SB_TYPE_STORAGE); 2421 2422 if (ret) { 2423 QEDF_ERR(&(qedf->dbg_ctx), "Status block initialization " 2424 "failed for id = %d.\n", sb_id); 2425 return ret; 2426 } 2427 2428 return 0; 2429 } 2430 2431 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info) 2432 { 2433 if (sb_info->sb_virt) 2434 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt), 2435 (void *)sb_info->sb_virt, sb_info->sb_phys); 2436 } 2437 2438 static void qedf_destroy_sb(struct qedf_ctx *qedf) 2439 { 2440 int id; 2441 struct qedf_fastpath *fp = NULL; 2442 2443 for (id = 0; id < qedf->num_queues; id++) { 2444 fp = &(qedf->fp_array[id]); 2445 if (fp->sb_id == QEDF_SB_ID_NULL) 2446 break; 2447 qedf_free_sb(qedf, fp->sb_info); 2448 kfree(fp->sb_info); 2449 } 2450 kfree(qedf->fp_array); 2451 } 2452 2453 static int qedf_prepare_sb(struct qedf_ctx *qedf) 2454 { 2455 int id; 2456 struct qedf_fastpath *fp; 2457 int ret; 2458 2459 qedf->fp_array = 2460 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath), 2461 GFP_KERNEL); 2462 2463 if (!qedf->fp_array) { 2464 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation " 2465 "failed.\n"); 2466 return -ENOMEM; 2467 } 2468 2469 for (id = 0; id < qedf->num_queues; id++) { 2470 fp = &(qedf->fp_array[id]); 2471 fp->sb_id = QEDF_SB_ID_NULL; 2472 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL); 2473 if (!fp->sb_info) { 2474 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct " 2475 "allocation failed.\n"); 2476 goto err; 2477 } 2478 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id); 2479 if (ret) { 2480 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and " 2481 "initialization failed.\n"); 2482 goto err; 2483 } 2484 fp->sb_id = id; 2485 fp->qedf = qedf; 2486 fp->cq_num_entries = 2487 qedf->global_queues[id]->cq_mem_size / 2488 sizeof(struct fcoe_cqe); 2489 } 2490 err: 2491 return 0; 2492 } 2493 2494 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe) 2495 { 2496 u16 xid; 2497 struct qedf_ioreq *io_req; 2498 struct qedf_rport *fcport; 2499 u32 comp_type; 2500 2501 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2502 FCOE_CQE_CQE_TYPE_MASK; 2503 2504 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2505 io_req = &qedf->cmd_mgr->cmds[xid]; 2506 2507 /* Completion not for a valid I/O anymore so just return */ 2508 if (!io_req) 2509 return; 2510 2511 fcport = io_req->fcport; 2512 2513 if (fcport == NULL) { 2514 QEDF_ERR(&(qedf->dbg_ctx), "fcport is NULL.\n"); 2515 return; 2516 } 2517 2518 /* 2519 * Check that fcport is offloaded. If it isn't then the spinlock 2520 * isn't valid and shouldn't be taken. We should just return. 2521 */ 2522 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 2523 QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n"); 2524 return; 2525 } 2526 2527 2528 switch (comp_type) { 2529 case FCOE_GOOD_COMPLETION_CQE_TYPE: 2530 atomic_inc(&fcport->free_sqes); 2531 switch (io_req->cmd_type) { 2532 case QEDF_SCSI_CMD: 2533 qedf_scsi_completion(qedf, cqe, io_req); 2534 break; 2535 case QEDF_ELS: 2536 qedf_process_els_compl(qedf, cqe, io_req); 2537 break; 2538 case QEDF_TASK_MGMT_CMD: 2539 qedf_process_tmf_compl(qedf, cqe, io_req); 2540 break; 2541 case QEDF_SEQ_CLEANUP: 2542 qedf_process_seq_cleanup_compl(qedf, cqe, io_req); 2543 break; 2544 } 2545 break; 2546 case FCOE_ERROR_DETECTION_CQE_TYPE: 2547 atomic_inc(&fcport->free_sqes); 2548 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2549 "Error detect CQE.\n"); 2550 qedf_process_error_detect(qedf, cqe, io_req); 2551 break; 2552 case FCOE_EXCH_CLEANUP_CQE_TYPE: 2553 atomic_inc(&fcport->free_sqes); 2554 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2555 "Cleanup CQE.\n"); 2556 qedf_process_cleanup_compl(qedf, cqe, io_req); 2557 break; 2558 case FCOE_ABTS_CQE_TYPE: 2559 atomic_inc(&fcport->free_sqes); 2560 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2561 "Abort CQE.\n"); 2562 qedf_process_abts_compl(qedf, cqe, io_req); 2563 break; 2564 case FCOE_DUMMY_CQE_TYPE: 2565 atomic_inc(&fcport->free_sqes); 2566 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2567 "Dummy CQE.\n"); 2568 break; 2569 case FCOE_LOCAL_COMP_CQE_TYPE: 2570 atomic_inc(&fcport->free_sqes); 2571 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2572 "Local completion CQE.\n"); 2573 break; 2574 case FCOE_WARNING_CQE_TYPE: 2575 atomic_inc(&fcport->free_sqes); 2576 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2577 "Warning CQE.\n"); 2578 qedf_process_warning_compl(qedf, cqe, io_req); 2579 break; 2580 case MAX_FCOE_CQE_TYPE: 2581 atomic_inc(&fcport->free_sqes); 2582 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2583 "Max FCoE CQE.\n"); 2584 break; 2585 default: 2586 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2587 "Default CQE.\n"); 2588 break; 2589 } 2590 } 2591 2592 static void qedf_free_bdq(struct qedf_ctx *qedf) 2593 { 2594 int i; 2595 2596 if (qedf->bdq_pbl_list) 2597 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE, 2598 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma); 2599 2600 if (qedf->bdq_pbl) 2601 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size, 2602 qedf->bdq_pbl, qedf->bdq_pbl_dma); 2603 2604 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2605 if (qedf->bdq[i].buf_addr) { 2606 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE, 2607 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma); 2608 } 2609 } 2610 } 2611 2612 static void qedf_free_global_queues(struct qedf_ctx *qedf) 2613 { 2614 int i; 2615 struct global_queue **gl = qedf->global_queues; 2616 2617 for (i = 0; i < qedf->num_queues; i++) { 2618 if (!gl[i]) 2619 continue; 2620 2621 if (gl[i]->cq) 2622 dma_free_coherent(&qedf->pdev->dev, 2623 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma); 2624 if (gl[i]->cq_pbl) 2625 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size, 2626 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 2627 2628 kfree(gl[i]); 2629 } 2630 2631 qedf_free_bdq(qedf); 2632 } 2633 2634 static int qedf_alloc_bdq(struct qedf_ctx *qedf) 2635 { 2636 int i; 2637 struct scsi_bd *pbl; 2638 u64 *list; 2639 dma_addr_t page; 2640 2641 /* Alloc dma memory for BDQ buffers */ 2642 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2643 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev, 2644 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL); 2645 if (!qedf->bdq[i].buf_addr) { 2646 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ " 2647 "buffer %d.\n", i); 2648 return -ENOMEM; 2649 } 2650 } 2651 2652 /* Alloc dma memory for BDQ page buffer list */ 2653 qedf->bdq_pbl_mem_size = 2654 QEDF_BDQ_SIZE * sizeof(struct scsi_bd); 2655 qedf->bdq_pbl_mem_size = 2656 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE); 2657 2658 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 2659 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL); 2660 if (!qedf->bdq_pbl) { 2661 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n"); 2662 return -ENOMEM; 2663 } 2664 2665 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2666 "BDQ PBL addr=0x%p dma=%pad\n", 2667 qedf->bdq_pbl, &qedf->bdq_pbl_dma); 2668 2669 /* 2670 * Populate BDQ PBL with physical and virtual address of individual 2671 * BDQ buffers 2672 */ 2673 pbl = (struct scsi_bd *)qedf->bdq_pbl; 2674 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2675 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma)); 2676 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma)); 2677 pbl->opaque.fcoe_opaque.hi = 0; 2678 /* Opaque lo data is an index into the BDQ array */ 2679 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i); 2680 pbl++; 2681 } 2682 2683 /* Allocate list of PBL pages */ 2684 qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev, 2685 QEDF_PAGE_SIZE, 2686 &qedf->bdq_pbl_list_dma, 2687 GFP_KERNEL); 2688 if (!qedf->bdq_pbl_list) { 2689 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n"); 2690 return -ENOMEM; 2691 } 2692 2693 /* 2694 * Now populate PBL list with pages that contain pointers to the 2695 * individual buffers. 2696 */ 2697 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size / 2698 QEDF_PAGE_SIZE; 2699 list = (u64 *)qedf->bdq_pbl_list; 2700 page = qedf->bdq_pbl_list_dma; 2701 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) { 2702 *list = qedf->bdq_pbl_dma; 2703 list++; 2704 page += QEDF_PAGE_SIZE; 2705 } 2706 2707 return 0; 2708 } 2709 2710 static int qedf_alloc_global_queues(struct qedf_ctx *qedf) 2711 { 2712 u32 *list; 2713 int i; 2714 int status = 0, rc; 2715 u32 *pbl; 2716 dma_addr_t page; 2717 int num_pages; 2718 2719 /* Allocate and map CQs, RQs */ 2720 /* 2721 * Number of global queues (CQ / RQ). This should 2722 * be <= number of available MSIX vectors for the PF 2723 */ 2724 if (!qedf->num_queues) { 2725 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n"); 2726 return 1; 2727 } 2728 2729 /* 2730 * Make sure we allocated the PBL that will contain the physical 2731 * addresses of our queues 2732 */ 2733 if (!qedf->p_cpuq) { 2734 status = 1; 2735 goto mem_alloc_failure; 2736 } 2737 2738 qedf->global_queues = kzalloc((sizeof(struct global_queue *) 2739 * qedf->num_queues), GFP_KERNEL); 2740 if (!qedf->global_queues) { 2741 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global " 2742 "queues array ptr memory\n"); 2743 return -ENOMEM; 2744 } 2745 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2746 "qedf->global_queues=%p.\n", qedf->global_queues); 2747 2748 /* Allocate DMA coherent buffers for BDQ */ 2749 rc = qedf_alloc_bdq(qedf); 2750 if (rc) 2751 goto mem_alloc_failure; 2752 2753 /* Allocate a CQ and an associated PBL for each MSI-X vector */ 2754 for (i = 0; i < qedf->num_queues; i++) { 2755 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue), 2756 GFP_KERNEL); 2757 if (!qedf->global_queues[i]) { 2758 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate " 2759 "global queue %d.\n", i); 2760 status = -ENOMEM; 2761 goto mem_alloc_failure; 2762 } 2763 2764 qedf->global_queues[i]->cq_mem_size = 2765 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 2766 qedf->global_queues[i]->cq_mem_size = 2767 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE); 2768 2769 qedf->global_queues[i]->cq_pbl_size = 2770 (qedf->global_queues[i]->cq_mem_size / 2771 PAGE_SIZE) * sizeof(void *); 2772 qedf->global_queues[i]->cq_pbl_size = 2773 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE); 2774 2775 qedf->global_queues[i]->cq = 2776 dma_alloc_coherent(&qedf->pdev->dev, 2777 qedf->global_queues[i]->cq_mem_size, 2778 &qedf->global_queues[i]->cq_dma, 2779 GFP_KERNEL); 2780 2781 if (!qedf->global_queues[i]->cq) { 2782 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n"); 2783 status = -ENOMEM; 2784 goto mem_alloc_failure; 2785 } 2786 2787 qedf->global_queues[i]->cq_pbl = 2788 dma_alloc_coherent(&qedf->pdev->dev, 2789 qedf->global_queues[i]->cq_pbl_size, 2790 &qedf->global_queues[i]->cq_pbl_dma, 2791 GFP_KERNEL); 2792 2793 if (!qedf->global_queues[i]->cq_pbl) { 2794 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n"); 2795 status = -ENOMEM; 2796 goto mem_alloc_failure; 2797 } 2798 2799 /* Create PBL */ 2800 num_pages = qedf->global_queues[i]->cq_mem_size / 2801 QEDF_PAGE_SIZE; 2802 page = qedf->global_queues[i]->cq_dma; 2803 pbl = (u32 *)qedf->global_queues[i]->cq_pbl; 2804 2805 while (num_pages--) { 2806 *pbl = U64_LO(page); 2807 pbl++; 2808 *pbl = U64_HI(page); 2809 pbl++; 2810 page += QEDF_PAGE_SIZE; 2811 } 2812 /* Set the initial consumer index for cq */ 2813 qedf->global_queues[i]->cq_cons_idx = 0; 2814 } 2815 2816 list = (u32 *)qedf->p_cpuq; 2817 2818 /* 2819 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 2820 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 2821 * to the physical address which contains an array of pointers to 2822 * the physical addresses of the specific queue pages. 2823 */ 2824 for (i = 0; i < qedf->num_queues; i++) { 2825 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma); 2826 list++; 2827 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma); 2828 list++; 2829 *list = U64_LO(0); 2830 list++; 2831 *list = U64_HI(0); 2832 list++; 2833 } 2834 2835 return 0; 2836 2837 mem_alloc_failure: 2838 qedf_free_global_queues(qedf); 2839 return status; 2840 } 2841 2842 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf) 2843 { 2844 u8 sq_num_pbl_pages; 2845 u32 sq_mem_size; 2846 u32 cq_mem_size; 2847 u32 cq_num_entries; 2848 int rval; 2849 2850 /* 2851 * The number of completion queues/fastpath interrupts/status blocks 2852 * we allocation is the minimum off: 2853 * 2854 * Number of CPUs 2855 * Number allocated by qed for our PCI function 2856 */ 2857 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf); 2858 2859 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n", 2860 qedf->num_queues); 2861 2862 qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev, 2863 qedf->num_queues * sizeof(struct qedf_glbl_q_params), 2864 &qedf->hw_p_cpuq, GFP_KERNEL); 2865 2866 if (!qedf->p_cpuq) { 2867 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n"); 2868 return 1; 2869 } 2870 2871 rval = qedf_alloc_global_queues(qedf); 2872 if (rval) { 2873 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation " 2874 "failed.\n"); 2875 return 1; 2876 } 2877 2878 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */ 2879 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 2880 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE); 2881 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE); 2882 2883 /* Calculate CQ num entries */ 2884 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 2885 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE); 2886 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe); 2887 2888 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params)); 2889 2890 /* Setup the value for fcoe PF */ 2891 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS; 2892 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS; 2893 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr = 2894 (u64)qedf->hw_p_cpuq; 2895 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages; 2896 2897 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0; 2898 2899 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries; 2900 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues; 2901 2902 /* log_page_size: 12 for 4KB pages */ 2903 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE); 2904 2905 qedf->pf_params.fcoe_pf_params.mtu = 9000; 2906 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI; 2907 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI; 2908 2909 /* BDQ address and size */ 2910 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] = 2911 qedf->bdq_pbl_list_dma; 2912 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] = 2913 qedf->bdq_pbl_list_num_entries; 2914 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE; 2915 2916 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2917 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n", 2918 qedf->bdq_pbl_list, 2919 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0], 2920 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]); 2921 2922 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2923 "cq_num_entries=%d.\n", 2924 qedf->pf_params.fcoe_pf_params.cq_num_entries); 2925 2926 return 0; 2927 } 2928 2929 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 2930 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf) 2931 { 2932 size_t size = 0; 2933 2934 if (qedf->p_cpuq) { 2935 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params); 2936 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq, 2937 qedf->hw_p_cpuq); 2938 } 2939 2940 qedf_free_global_queues(qedf); 2941 2942 kfree(qedf->global_queues); 2943 } 2944 2945 /* 2946 * PCI driver functions 2947 */ 2948 2949 static const struct pci_device_id qedf_pci_tbl[] = { 2950 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) }, 2951 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) }, 2952 {0} 2953 }; 2954 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl); 2955 2956 static struct pci_driver qedf_pci_driver = { 2957 .name = QEDF_MODULE_NAME, 2958 .id_table = qedf_pci_tbl, 2959 .probe = qedf_probe, 2960 .remove = qedf_remove, 2961 }; 2962 2963 static int __qedf_probe(struct pci_dev *pdev, int mode) 2964 { 2965 int rc = -EINVAL; 2966 struct fc_lport *lport; 2967 struct qedf_ctx *qedf; 2968 struct Scsi_Host *host; 2969 bool is_vf = false; 2970 struct qed_ll2_params params; 2971 char host_buf[20]; 2972 struct qed_link_params link_params; 2973 int status; 2974 void *task_start, *task_end; 2975 struct qed_slowpath_params slowpath_params; 2976 struct qed_probe_params qed_params; 2977 u16 tmp; 2978 2979 /* 2980 * When doing error recovery we didn't reap the lport so don't try 2981 * to reallocate it. 2982 */ 2983 if (mode != QEDF_MODE_RECOVERY) { 2984 lport = libfc_host_alloc(&qedf_host_template, 2985 sizeof(struct qedf_ctx)); 2986 2987 if (!lport) { 2988 QEDF_ERR(NULL, "Could not allocate lport.\n"); 2989 rc = -ENOMEM; 2990 goto err0; 2991 } 2992 2993 /* Initialize qedf_ctx */ 2994 qedf = lport_priv(lport); 2995 qedf->lport = lport; 2996 qedf->ctlr.lp = lport; 2997 qedf->pdev = pdev; 2998 qedf->dbg_ctx.pdev = pdev; 2999 qedf->dbg_ctx.host_no = lport->host->host_no; 3000 spin_lock_init(&qedf->hba_lock); 3001 INIT_LIST_HEAD(&qedf->fcports); 3002 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1; 3003 atomic_set(&qedf->num_offloads, 0); 3004 qedf->stop_io_on_error = false; 3005 pci_set_drvdata(pdev, qedf); 3006 init_completion(&qedf->fipvlan_compl); 3007 mutex_init(&qedf->stats_mutex); 3008 3009 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, 3010 "QLogic FastLinQ FCoE Module qedf %s, " 3011 "FW %d.%d.%d.%d\n", QEDF_VERSION, 3012 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 3013 FW_ENGINEERING_VERSION); 3014 } else { 3015 /* Init pointers during recovery */ 3016 qedf = pci_get_drvdata(pdev); 3017 lport = qedf->lport; 3018 } 3019 3020 host = lport->host; 3021 3022 /* Allocate mempool for qedf_io_work structs */ 3023 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN, 3024 qedf_io_work_cache); 3025 if (qedf->io_mempool == NULL) { 3026 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n"); 3027 goto err1; 3028 } 3029 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n", 3030 qedf->io_mempool); 3031 3032 sprintf(host_buf, "qedf_%u_link", 3033 qedf->lport->host->host_no); 3034 qedf->link_update_wq = create_workqueue(host_buf); 3035 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update); 3036 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery); 3037 INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump); 3038 qedf->fipvlan_retries = qedf_fipvlan_retries; 3039 /* Set a default prio in case DCBX doesn't converge */ 3040 if (qedf_default_prio > -1) { 3041 /* 3042 * This is the case where we pass a modparam in so we want to 3043 * honor it even if dcbx doesn't converge. 3044 */ 3045 qedf->prio = qedf_default_prio; 3046 } else 3047 qedf->prio = QEDF_DEFAULT_PRIO; 3048 3049 /* 3050 * Common probe. Takes care of basic hardware init and pci_* 3051 * functions. 3052 */ 3053 memset(&qed_params, 0, sizeof(qed_params)); 3054 qed_params.protocol = QED_PROTOCOL_FCOE; 3055 qed_params.dp_module = qedf_dp_module; 3056 qed_params.dp_level = qedf_dp_level; 3057 qed_params.is_vf = is_vf; 3058 qedf->cdev = qed_ops->common->probe(pdev, &qed_params); 3059 if (!qedf->cdev) { 3060 rc = -ENODEV; 3061 goto err1; 3062 } 3063 3064 /* Learn information crucial for qedf to progress */ 3065 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3066 if (rc) { 3067 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n"); 3068 goto err1; 3069 } 3070 3071 /* queue allocation code should come here 3072 * order should be 3073 * slowpath_start 3074 * status block allocation 3075 * interrupt registration (to get min number of queues) 3076 * set_fcoe_pf_param 3077 * qed_sp_fcoe_func_start 3078 */ 3079 rc = qedf_set_fcoe_pf_param(qedf); 3080 if (rc) { 3081 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n"); 3082 goto err2; 3083 } 3084 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3085 3086 /* Record BDQ producer doorbell addresses */ 3087 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr; 3088 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr; 3089 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3090 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod, 3091 qedf->bdq_secondary_prod); 3092 3093 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf); 3094 3095 rc = qedf_prepare_sb(qedf); 3096 if (rc) { 3097 3098 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3099 goto err2; 3100 } 3101 3102 /* Start the Slowpath-process */ 3103 slowpath_params.int_mode = QED_INT_MODE_MSIX; 3104 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER; 3105 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER; 3106 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER; 3107 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER; 3108 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE); 3109 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params); 3110 if (rc) { 3111 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3112 goto err2; 3113 } 3114 3115 /* 3116 * update_pf_params needs to be called before and after slowpath 3117 * start 3118 */ 3119 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3120 3121 /* Setup interrupts */ 3122 rc = qedf_setup_int(qedf); 3123 if (rc) 3124 goto err3; 3125 3126 rc = qed_ops->start(qedf->cdev, &qedf->tasks); 3127 if (rc) { 3128 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n"); 3129 goto err4; 3130 } 3131 task_start = qedf_get_task_mem(&qedf->tasks, 0); 3132 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1); 3133 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, " 3134 "end=%p block_size=%u.\n", task_start, task_end, 3135 qedf->tasks.size); 3136 3137 /* 3138 * We need to write the number of BDs in the BDQ we've preallocated so 3139 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 3140 * packet arrives. 3141 */ 3142 qedf->bdq_prod_idx = QEDF_BDQ_SIZE; 3143 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3144 "Writing %d to primary and secondary BDQ doorbell registers.\n", 3145 qedf->bdq_prod_idx); 3146 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod); 3147 tmp = readw(qedf->bdq_primary_prod); 3148 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod); 3149 tmp = readw(qedf->bdq_secondary_prod); 3150 3151 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3152 3153 /* Now that the dev_info struct has been filled in set the MAC 3154 * address 3155 */ 3156 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac); 3157 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n", 3158 qedf->mac); 3159 3160 /* 3161 * Set the WWNN and WWPN in the following way: 3162 * 3163 * If the info we get from qed is non-zero then use that to set the 3164 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based 3165 * on the MAC address. 3166 */ 3167 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) { 3168 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3169 "Setting WWPN and WWNN from qed dev_info.\n"); 3170 qedf->wwnn = qedf->dev_info.wwnn; 3171 qedf->wwpn = qedf->dev_info.wwpn; 3172 } else { 3173 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3174 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n"); 3175 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0); 3176 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0); 3177 } 3178 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx " 3179 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn); 3180 3181 sprintf(host_buf, "host_%d", host->host_no); 3182 qed_ops->common->set_name(qedf->cdev, host_buf); 3183 3184 3185 /* Set xid max values */ 3186 qedf->max_scsi_xid = QEDF_MAX_SCSI_XID; 3187 qedf->max_els_xid = QEDF_MAX_ELS_XID; 3188 3189 /* Allocate cmd mgr */ 3190 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf); 3191 if (!qedf->cmd_mgr) { 3192 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n"); 3193 rc = -ENOMEM; 3194 goto err5; 3195 } 3196 3197 if (mode != QEDF_MODE_RECOVERY) { 3198 host->transportt = qedf_fc_transport_template; 3199 host->can_queue = QEDF_MAX_ELS_XID; 3200 host->max_lun = qedf_max_lun; 3201 host->max_cmd_len = QEDF_MAX_CDB_LEN; 3202 rc = scsi_add_host(host, &pdev->dev); 3203 if (rc) 3204 goto err6; 3205 } 3206 3207 memset(¶ms, 0, sizeof(params)); 3208 params.mtu = 9000; 3209 ether_addr_copy(params.ll2_mac_address, qedf->mac); 3210 3211 /* Start LL2 processing thread */ 3212 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no); 3213 qedf->ll2_recv_wq = 3214 create_workqueue(host_buf); 3215 if (!qedf->ll2_recv_wq) { 3216 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n"); 3217 rc = -ENOMEM; 3218 goto err7; 3219 } 3220 3221 #ifdef CONFIG_DEBUG_FS 3222 qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops, 3223 qedf_dbg_fops); 3224 #endif 3225 3226 /* Start LL2 */ 3227 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf); 3228 rc = qed_ops->ll2->start(qedf->cdev, ¶ms); 3229 if (rc) { 3230 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n"); 3231 goto err7; 3232 } 3233 set_bit(QEDF_LL2_STARTED, &qedf->flags); 3234 3235 /* Set initial FIP/FCoE VLAN to NULL */ 3236 qedf->vlan_id = 0; 3237 3238 /* 3239 * No need to setup fcoe_ctlr or fc_lport objects during recovery since 3240 * they were not reaped during the unload process. 3241 */ 3242 if (mode != QEDF_MODE_RECOVERY) { 3243 /* Setup imbedded fcoe controller */ 3244 qedf_fcoe_ctlr_setup(qedf); 3245 3246 /* Setup lport */ 3247 rc = qedf_lport_setup(qedf); 3248 if (rc) { 3249 QEDF_ERR(&(qedf->dbg_ctx), 3250 "qedf_lport_setup failed.\n"); 3251 goto err7; 3252 } 3253 } 3254 3255 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no); 3256 qedf->timer_work_queue = 3257 create_workqueue(host_buf); 3258 if (!qedf->timer_work_queue) { 3259 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer " 3260 "workqueue.\n"); 3261 rc = -ENOMEM; 3262 goto err7; 3263 } 3264 3265 /* DPC workqueue is not reaped during recovery unload */ 3266 if (mode != QEDF_MODE_RECOVERY) { 3267 sprintf(host_buf, "qedf_%u_dpc", 3268 qedf->lport->host->host_no); 3269 qedf->dpc_wq = create_workqueue(host_buf); 3270 } 3271 3272 /* 3273 * GRC dump and sysfs parameters are not reaped during the recovery 3274 * unload process. 3275 */ 3276 if (mode != QEDF_MODE_RECOVERY) { 3277 qedf->grcdump_size = 3278 qed_ops->common->dbg_all_data_size(qedf->cdev); 3279 if (qedf->grcdump_size) { 3280 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump, 3281 qedf->grcdump_size); 3282 if (rc) { 3283 QEDF_ERR(&(qedf->dbg_ctx), 3284 "GRC Dump buffer alloc failed.\n"); 3285 qedf->grcdump = NULL; 3286 } 3287 3288 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3289 "grcdump: addr=%p, size=%u.\n", 3290 qedf->grcdump, qedf->grcdump_size); 3291 } 3292 qedf_create_sysfs_ctx_attr(qedf); 3293 3294 /* Initialize I/O tracing for this adapter */ 3295 spin_lock_init(&qedf->io_trace_lock); 3296 qedf->io_trace_idx = 0; 3297 } 3298 3299 init_completion(&qedf->flogi_compl); 3300 3301 status = qed_ops->common->update_drv_state(qedf->cdev, true); 3302 if (status) 3303 QEDF_ERR(&(qedf->dbg_ctx), 3304 "Failed to send drv state to MFW.\n"); 3305 3306 memset(&link_params, 0, sizeof(struct qed_link_params)); 3307 link_params.link_up = true; 3308 status = qed_ops->common->set_link(qedf->cdev, &link_params); 3309 if (status) 3310 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n"); 3311 3312 /* Start/restart discovery */ 3313 if (mode == QEDF_MODE_RECOVERY) 3314 fcoe_ctlr_link_up(&qedf->ctlr); 3315 else 3316 fc_fabric_login(lport); 3317 3318 /* All good */ 3319 return 0; 3320 3321 err7: 3322 if (qedf->ll2_recv_wq) 3323 destroy_workqueue(qedf->ll2_recv_wq); 3324 fc_remove_host(qedf->lport->host); 3325 scsi_remove_host(qedf->lport->host); 3326 #ifdef CONFIG_DEBUG_FS 3327 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3328 #endif 3329 err6: 3330 qedf_cmd_mgr_free(qedf->cmd_mgr); 3331 err5: 3332 qed_ops->stop(qedf->cdev); 3333 err4: 3334 qedf_free_fcoe_pf_param(qedf); 3335 qedf_sync_free_irqs(qedf); 3336 err3: 3337 qed_ops->common->slowpath_stop(qedf->cdev); 3338 err2: 3339 qed_ops->common->remove(qedf->cdev); 3340 err1: 3341 scsi_host_put(lport->host); 3342 err0: 3343 return rc; 3344 } 3345 3346 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id) 3347 { 3348 return __qedf_probe(pdev, QEDF_MODE_NORMAL); 3349 } 3350 3351 static void __qedf_remove(struct pci_dev *pdev, int mode) 3352 { 3353 struct qedf_ctx *qedf; 3354 int rc; 3355 3356 if (!pdev) { 3357 QEDF_ERR(NULL, "pdev is NULL.\n"); 3358 return; 3359 } 3360 3361 qedf = pci_get_drvdata(pdev); 3362 3363 /* 3364 * Prevent race where we're in board disable work and then try to 3365 * rmmod the module. 3366 */ 3367 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 3368 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n"); 3369 return; 3370 } 3371 3372 if (mode != QEDF_MODE_RECOVERY) 3373 set_bit(QEDF_UNLOADING, &qedf->flags); 3374 3375 /* Logoff the fabric to upload all connections */ 3376 if (mode == QEDF_MODE_RECOVERY) 3377 fcoe_ctlr_link_down(&qedf->ctlr); 3378 else 3379 fc_fabric_logoff(qedf->lport); 3380 qedf_wait_for_upload(qedf); 3381 3382 #ifdef CONFIG_DEBUG_FS 3383 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3384 #endif 3385 3386 /* Stop any link update handling */ 3387 cancel_delayed_work_sync(&qedf->link_update); 3388 destroy_workqueue(qedf->link_update_wq); 3389 qedf->link_update_wq = NULL; 3390 3391 if (qedf->timer_work_queue) 3392 destroy_workqueue(qedf->timer_work_queue); 3393 3394 /* Stop Light L2 */ 3395 clear_bit(QEDF_LL2_STARTED, &qedf->flags); 3396 qed_ops->ll2->stop(qedf->cdev); 3397 if (qedf->ll2_recv_wq) 3398 destroy_workqueue(qedf->ll2_recv_wq); 3399 3400 /* Stop fastpath */ 3401 qedf_sync_free_irqs(qedf); 3402 qedf_destroy_sb(qedf); 3403 3404 /* 3405 * During recovery don't destroy OS constructs that represent the 3406 * physical port. 3407 */ 3408 if (mode != QEDF_MODE_RECOVERY) { 3409 qedf_free_grc_dump_buf(&qedf->grcdump); 3410 qedf_remove_sysfs_ctx_attr(qedf); 3411 3412 /* Remove all SCSI/libfc/libfcoe structures */ 3413 fcoe_ctlr_destroy(&qedf->ctlr); 3414 fc_lport_destroy(qedf->lport); 3415 fc_remove_host(qedf->lport->host); 3416 scsi_remove_host(qedf->lport->host); 3417 } 3418 3419 qedf_cmd_mgr_free(qedf->cmd_mgr); 3420 3421 if (mode != QEDF_MODE_RECOVERY) { 3422 fc_exch_mgr_free(qedf->lport); 3423 fc_lport_free_stats(qedf->lport); 3424 3425 /* Wait for all vports to be reaped */ 3426 qedf_wait_for_vport_destroy(qedf); 3427 } 3428 3429 /* 3430 * Now that all connections have been uploaded we can stop the 3431 * rest of the qed operations 3432 */ 3433 qed_ops->stop(qedf->cdev); 3434 3435 if (mode != QEDF_MODE_RECOVERY) { 3436 if (qedf->dpc_wq) { 3437 /* Stop general DPC handling */ 3438 destroy_workqueue(qedf->dpc_wq); 3439 qedf->dpc_wq = NULL; 3440 } 3441 } 3442 3443 /* Final shutdown for the board */ 3444 qedf_free_fcoe_pf_param(qedf); 3445 if (mode != QEDF_MODE_RECOVERY) { 3446 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3447 pci_set_drvdata(pdev, NULL); 3448 } 3449 3450 rc = qed_ops->common->update_drv_state(qedf->cdev, false); 3451 if (rc) 3452 QEDF_ERR(&(qedf->dbg_ctx), 3453 "Failed to send drv state to MFW.\n"); 3454 3455 qed_ops->common->slowpath_stop(qedf->cdev); 3456 qed_ops->common->remove(qedf->cdev); 3457 3458 mempool_destroy(qedf->io_mempool); 3459 3460 /* Only reap the Scsi_host on a real removal */ 3461 if (mode != QEDF_MODE_RECOVERY) 3462 scsi_host_put(qedf->lport->host); 3463 } 3464 3465 static void qedf_remove(struct pci_dev *pdev) 3466 { 3467 /* Check to make sure this function wasn't already disabled */ 3468 if (!atomic_read(&pdev->enable_cnt)) 3469 return; 3470 3471 __qedf_remove(pdev, QEDF_MODE_NORMAL); 3472 } 3473 3474 void qedf_wq_grcdump(struct work_struct *work) 3475 { 3476 struct qedf_ctx *qedf = 3477 container_of(work, struct qedf_ctx, grcdump_work.work); 3478 3479 QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n"); 3480 qedf_capture_grc_dump(qedf); 3481 } 3482 3483 /* 3484 * Protocol TLV handler 3485 */ 3486 void qedf_get_protocol_tlv_data(void *dev, void *data) 3487 { 3488 struct qedf_ctx *qedf = dev; 3489 struct qed_mfw_tlv_fcoe *fcoe = data; 3490 struct fc_lport *lport = qedf->lport; 3491 struct Scsi_Host *host = lport->host; 3492 struct fc_host_attrs *fc_host = shost_to_fc_host(host); 3493 struct fc_host_statistics *hst; 3494 3495 /* Force a refresh of the fc_host stats including offload stats */ 3496 hst = qedf_fc_get_host_stats(host); 3497 3498 fcoe->qos_pri_set = true; 3499 fcoe->qos_pri = 3; /* Hard coded to 3 in driver */ 3500 3501 fcoe->ra_tov_set = true; 3502 fcoe->ra_tov = lport->r_a_tov; 3503 3504 fcoe->ed_tov_set = true; 3505 fcoe->ed_tov = lport->e_d_tov; 3506 3507 fcoe->npiv_state_set = true; 3508 fcoe->npiv_state = 1; /* NPIV always enabled */ 3509 3510 fcoe->num_npiv_ids_set = true; 3511 fcoe->num_npiv_ids = fc_host->npiv_vports_inuse; 3512 3513 /* Certain attributes we only want to set if we've selected an FCF */ 3514 if (qedf->ctlr.sel_fcf) { 3515 fcoe->switch_name_set = true; 3516 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name); 3517 } 3518 3519 fcoe->port_state_set = true; 3520 /* For qedf we're either link down or fabric attach */ 3521 if (lport->link_up) 3522 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC; 3523 else 3524 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE; 3525 3526 fcoe->link_failures_set = true; 3527 fcoe->link_failures = (u16)hst->link_failure_count; 3528 3529 fcoe->fcoe_txq_depth_set = true; 3530 fcoe->fcoe_rxq_depth_set = true; 3531 fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS; 3532 fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS; 3533 3534 fcoe->fcoe_rx_frames_set = true; 3535 fcoe->fcoe_rx_frames = hst->rx_frames; 3536 3537 fcoe->fcoe_tx_frames_set = true; 3538 fcoe->fcoe_tx_frames = hst->tx_frames; 3539 3540 fcoe->fcoe_rx_bytes_set = true; 3541 fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000; 3542 3543 fcoe->fcoe_tx_bytes_set = true; 3544 fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000; 3545 3546 fcoe->crc_count_set = true; 3547 fcoe->crc_count = hst->invalid_crc_count; 3548 3549 fcoe->tx_abts_set = true; 3550 fcoe->tx_abts = hst->fcp_packet_aborts; 3551 3552 fcoe->tx_lun_rst_set = true; 3553 fcoe->tx_lun_rst = qedf->lun_resets; 3554 3555 fcoe->abort_task_sets_set = true; 3556 fcoe->abort_task_sets = qedf->packet_aborts; 3557 3558 fcoe->scsi_busy_set = true; 3559 fcoe->scsi_busy = qedf->busy; 3560 3561 fcoe->scsi_tsk_full_set = true; 3562 fcoe->scsi_tsk_full = qedf->task_set_fulls; 3563 } 3564 3565 /* Generic TLV data callback */ 3566 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 3567 { 3568 struct qedf_ctx *qedf; 3569 3570 if (!dev) { 3571 QEDF_INFO(NULL, QEDF_LOG_EVT, 3572 "dev is NULL so ignoring get_generic_tlv_data request.\n"); 3573 return; 3574 } 3575 qedf = (struct qedf_ctx *)dev; 3576 3577 memset(data, 0, sizeof(struct qed_generic_tlvs)); 3578 ether_addr_copy(data->mac[0], qedf->mac); 3579 } 3580 3581 /* 3582 * Module Init/Remove 3583 */ 3584 3585 static int __init qedf_init(void) 3586 { 3587 int ret; 3588 3589 /* If debug=1 passed, set the default log mask */ 3590 if (qedf_debug == QEDF_LOG_DEFAULT) 3591 qedf_debug = QEDF_DEFAULT_LOG_MASK; 3592 3593 /* 3594 * Check that default prio for FIP/FCoE traffic is between 0..7 if a 3595 * value has been set 3596 */ 3597 if (qedf_default_prio > -1) 3598 if (qedf_default_prio > 7) { 3599 qedf_default_prio = QEDF_DEFAULT_PRIO; 3600 QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n", 3601 QEDF_DEFAULT_PRIO); 3602 } 3603 3604 /* Print driver banner */ 3605 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR, 3606 QEDF_VERSION); 3607 3608 /* Create kmem_cache for qedf_io_work structs */ 3609 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache", 3610 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL); 3611 if (qedf_io_work_cache == NULL) { 3612 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n"); 3613 goto err1; 3614 } 3615 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n", 3616 qedf_io_work_cache); 3617 3618 qed_ops = qed_get_fcoe_ops(); 3619 if (!qed_ops) { 3620 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n"); 3621 goto err1; 3622 } 3623 3624 #ifdef CONFIG_DEBUG_FS 3625 qedf_dbg_init("qedf"); 3626 #endif 3627 3628 qedf_fc_transport_template = 3629 fc_attach_transport(&qedf_fc_transport_fn); 3630 if (!qedf_fc_transport_template) { 3631 QEDF_ERR(NULL, "Could not register with FC transport\n"); 3632 goto err2; 3633 } 3634 3635 qedf_fc_vport_transport_template = 3636 fc_attach_transport(&qedf_fc_vport_transport_fn); 3637 if (!qedf_fc_vport_transport_template) { 3638 QEDF_ERR(NULL, "Could not register vport template with FC " 3639 "transport\n"); 3640 goto err3; 3641 } 3642 3643 qedf_io_wq = create_workqueue("qedf_io_wq"); 3644 if (!qedf_io_wq) { 3645 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n"); 3646 goto err4; 3647 } 3648 3649 qedf_cb_ops.get_login_failures = qedf_get_login_failures; 3650 3651 ret = pci_register_driver(&qedf_pci_driver); 3652 if (ret) { 3653 QEDF_ERR(NULL, "Failed to register driver\n"); 3654 goto err5; 3655 } 3656 3657 return 0; 3658 3659 err5: 3660 destroy_workqueue(qedf_io_wq); 3661 err4: 3662 fc_release_transport(qedf_fc_vport_transport_template); 3663 err3: 3664 fc_release_transport(qedf_fc_transport_template); 3665 err2: 3666 #ifdef CONFIG_DEBUG_FS 3667 qedf_dbg_exit(); 3668 #endif 3669 qed_put_fcoe_ops(); 3670 err1: 3671 return -EINVAL; 3672 } 3673 3674 static void __exit qedf_cleanup(void) 3675 { 3676 pci_unregister_driver(&qedf_pci_driver); 3677 3678 destroy_workqueue(qedf_io_wq); 3679 3680 fc_release_transport(qedf_fc_vport_transport_template); 3681 fc_release_transport(qedf_fc_transport_template); 3682 #ifdef CONFIG_DEBUG_FS 3683 qedf_dbg_exit(); 3684 #endif 3685 qed_put_fcoe_ops(); 3686 3687 kmem_cache_destroy(qedf_io_work_cache); 3688 } 3689 3690 MODULE_LICENSE("GPL"); 3691 MODULE_DESCRIPTION("QLogic QEDF 25/40/50/100Gb FCoE Driver"); 3692 MODULE_AUTHOR("QLogic Corporation"); 3693 MODULE_VERSION(QEDF_VERSION); 3694 module_init(qedf_init); 3695 module_exit(qedf_cleanup); 3696