1 /* 2 * QLogic FCoE Offload Driver 3 * Copyright (c) 2016-2017 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 = 30; 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 30)"); 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 uint qedf_default_prio = QEDF_DEFAULT_PRIO; 58 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO); 59 MODULE_PARM_DESC(default_prio, " Default 802.1q priority for FIP and FCoE" 60 " traffic (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 uint qedf_dp_module; 93 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO); 94 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed " 95 "qed module during probe."); 96 97 static uint qedf_dp_level = QED_LEVEL_NOTICE; 98 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO); 99 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module " 100 "during probe (0-3: 0 more verbose)."); 101 102 struct workqueue_struct *qedf_io_wq; 103 104 static struct fcoe_percpu_s qedf_global; 105 static DEFINE_SPINLOCK(qedf_global_lock); 106 107 static struct kmem_cache *qedf_io_work_cache; 108 109 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id) 110 { 111 qedf->vlan_id = vlan_id; 112 qedf->vlan_id |= qedf_default_prio << VLAN_PRIO_SHIFT; 113 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Setting vlan_id=%04x " 114 "prio=%d.\n", vlan_id, qedf_default_prio); 115 } 116 117 /* Returns true if we have a valid vlan, false otherwise */ 118 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf) 119 { 120 int rc; 121 122 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 123 QEDF_ERR(&(qedf->dbg_ctx), "Link not up.\n"); 124 return false; 125 } 126 127 while (qedf->fipvlan_retries--) { 128 if (qedf->vlan_id > 0) 129 return true; 130 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 131 "Retry %d.\n", qedf->fipvlan_retries); 132 init_completion(&qedf->fipvlan_compl); 133 qedf_fcoe_send_vlan_req(qedf); 134 rc = wait_for_completion_timeout(&qedf->fipvlan_compl, 135 1 * HZ); 136 if (rc > 0) { 137 fcoe_ctlr_link_up(&qedf->ctlr); 138 return true; 139 } 140 } 141 142 return false; 143 } 144 145 static void qedf_handle_link_update(struct work_struct *work) 146 { 147 struct qedf_ctx *qedf = 148 container_of(work, struct qedf_ctx, link_update.work); 149 int rc; 150 151 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Entered.\n"); 152 153 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 154 rc = qedf_initiate_fipvlan_req(qedf); 155 if (rc) 156 return; 157 /* 158 * If we get here then we never received a repsonse to our 159 * fip vlan request so set the vlan_id to the default and 160 * tell FCoE that the link is up 161 */ 162 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN " 163 "response, falling back to default VLAN %d.\n", 164 qedf_fallback_vlan); 165 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 166 167 /* 168 * Zero out data_src_addr so we'll update it with the new 169 * lport port_id 170 */ 171 eth_zero_addr(qedf->data_src_addr); 172 fcoe_ctlr_link_up(&qedf->ctlr); 173 } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 174 /* 175 * If we hit here and link_down_tmo_valid is still 1 it means 176 * that link_down_tmo timed out so set it to 0 to make sure any 177 * other readers have accurate state. 178 */ 179 atomic_set(&qedf->link_down_tmo_valid, 0); 180 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 181 "Calling fcoe_ctlr_link_down().\n"); 182 fcoe_ctlr_link_down(&qedf->ctlr); 183 qedf_wait_for_upload(qedf); 184 /* Reset the number of FIP VLAN retries */ 185 qedf->fipvlan_retries = qedf_fipvlan_retries; 186 } 187 } 188 189 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1 190 #define QEDF_FCOE_MAC_METHOD_FCF_MAP 2 191 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3 192 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp) 193 { 194 u8 *granted_mac; 195 struct fc_frame_header *fh = fc_frame_header_get(fp); 196 u8 fc_map[3]; 197 int method = 0; 198 199 /* Get granted MAC address from FIP FLOGI payload */ 200 granted_mac = fr_cb(fp)->granted_mac; 201 202 /* 203 * We set the source MAC for FCoE traffic based on the Granted MAC 204 * address from the switch. 205 * 206 * If granted_mac is non-zero, we used that. 207 * If the granted_mac is zeroed out, created the FCoE MAC based on 208 * the sel_fcf->fc_map and the d_id fo the FLOGI frame. 209 * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the 210 * d_id of the FLOGI frame. 211 */ 212 if (!is_zero_ether_addr(granted_mac)) { 213 ether_addr_copy(qedf->data_src_addr, granted_mac); 214 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC; 215 } else if (qedf->ctlr.sel_fcf->fc_map != 0) { 216 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map); 217 qedf->data_src_addr[0] = fc_map[0]; 218 qedf->data_src_addr[1] = fc_map[1]; 219 qedf->data_src_addr[2] = fc_map[2]; 220 qedf->data_src_addr[3] = fh->fh_d_id[0]; 221 qedf->data_src_addr[4] = fh->fh_d_id[1]; 222 qedf->data_src_addr[5] = fh->fh_d_id[2]; 223 method = QEDF_FCOE_MAC_METHOD_FCF_MAP; 224 } else { 225 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id); 226 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC; 227 } 228 229 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 230 "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method); 231 } 232 233 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp, 234 void *arg) 235 { 236 struct fc_exch *exch = fc_seq_exch(seq); 237 struct fc_lport *lport = exch->lp; 238 struct qedf_ctx *qedf = lport_priv(lport); 239 240 if (!qedf) { 241 QEDF_ERR(NULL, "qedf is NULL.\n"); 242 return; 243 } 244 245 /* 246 * If ERR_PTR is set then don't try to stat anything as it will cause 247 * a crash when we access fp. 248 */ 249 if (IS_ERR(fp)) { 250 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 251 "fp has IS_ERR() set.\n"); 252 goto skip_stat; 253 } 254 255 /* Log stats for FLOGI reject */ 256 if (fc_frame_payload_op(fp) == ELS_LS_RJT) 257 qedf->flogi_failed++; 258 else if (fc_frame_payload_op(fp) == ELS_LS_ACC) { 259 /* Set the source MAC we will use for FCoE traffic */ 260 qedf_set_data_src_addr(qedf, fp); 261 } 262 263 /* Complete flogi_compl so we can proceed to sending ADISCs */ 264 complete(&qedf->flogi_compl); 265 266 skip_stat: 267 /* Report response to libfc */ 268 fc_lport_flogi_resp(seq, fp, lport); 269 } 270 271 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did, 272 struct fc_frame *fp, unsigned int op, 273 void (*resp)(struct fc_seq *, 274 struct fc_frame *, 275 void *), 276 void *arg, u32 timeout) 277 { 278 struct qedf_ctx *qedf = lport_priv(lport); 279 280 /* 281 * Intercept FLOGI for statistic purposes. Note we use the resp 282 * callback to tell if this is really a flogi. 283 */ 284 if (resp == fc_lport_flogi_resp) { 285 qedf->flogi_cnt++; 286 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp, 287 arg, timeout); 288 } 289 290 return fc_elsct_send(lport, did, fp, op, resp, arg, timeout); 291 } 292 293 int qedf_send_flogi(struct qedf_ctx *qedf) 294 { 295 struct fc_lport *lport; 296 struct fc_frame *fp; 297 298 lport = qedf->lport; 299 300 if (!lport->tt.elsct_send) 301 return -EINVAL; 302 303 fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); 304 if (!fp) { 305 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n"); 306 return -ENOMEM; 307 } 308 309 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 310 "Sending FLOGI to reestablish session with switch.\n"); 311 lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, 312 ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov); 313 314 init_completion(&qedf->flogi_compl); 315 316 return 0; 317 } 318 319 struct qedf_tmp_rdata_item { 320 struct fc_rport_priv *rdata; 321 struct list_head list; 322 }; 323 324 /* 325 * This function is called if link_down_tmo is in use. If we get a link up and 326 * link_down_tmo has not expired then use just FLOGI/ADISC to recover our 327 * sessions with targets. Otherwise, just call fcoe_ctlr_link_up(). 328 */ 329 static void qedf_link_recovery(struct work_struct *work) 330 { 331 struct qedf_ctx *qedf = 332 container_of(work, struct qedf_ctx, link_recovery.work); 333 struct qedf_rport *fcport; 334 struct fc_rport_priv *rdata; 335 struct qedf_tmp_rdata_item *rdata_item, *tmp_rdata_item; 336 bool rc; 337 int retries = 30; 338 int rval, i; 339 struct list_head rdata_login_list; 340 341 INIT_LIST_HEAD(&rdata_login_list); 342 343 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 344 "Link down tmo did not expire.\n"); 345 346 /* 347 * Essentially reset the fcoe_ctlr here without affecting the state 348 * of the libfc structs. 349 */ 350 qedf->ctlr.state = FIP_ST_LINK_WAIT; 351 fcoe_ctlr_link_down(&qedf->ctlr); 352 353 /* 354 * Bring the link up before we send the fipvlan request so libfcoe 355 * can select a new fcf in parallel 356 */ 357 fcoe_ctlr_link_up(&qedf->ctlr); 358 359 /* Since the link when down and up to verify which vlan we're on */ 360 qedf->fipvlan_retries = qedf_fipvlan_retries; 361 rc = qedf_initiate_fipvlan_req(qedf); 362 /* If getting the VLAN fails, set the VLAN to the fallback one */ 363 if (!rc) 364 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 365 366 /* 367 * We need to wait for an FCF to be selected due to the 368 * fcoe_ctlr_link_up other the FLOGI will be rejected. 369 */ 370 while (retries > 0) { 371 if (qedf->ctlr.sel_fcf) { 372 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 373 "FCF reselected, proceeding with FLOGI.\n"); 374 break; 375 } 376 msleep(500); 377 retries--; 378 } 379 380 if (retries < 1) { 381 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for " 382 "FCF selection.\n"); 383 return; 384 } 385 386 rval = qedf_send_flogi(qedf); 387 if (rval) 388 return; 389 390 /* Wait for FLOGI completion before proceeding with sending ADISCs */ 391 i = wait_for_completion_timeout(&qedf->flogi_compl, 392 qedf->lport->r_a_tov); 393 if (i == 0) { 394 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n"); 395 return; 396 } 397 398 /* 399 * Call lport->tt.rport_login which will cause libfc to send an 400 * ADISC since the rport is in state ready. 401 */ 402 rcu_read_lock(); 403 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 404 rdata = fcport->rdata; 405 if (rdata == NULL) 406 continue; 407 rdata_item = kzalloc(sizeof(struct qedf_tmp_rdata_item), 408 GFP_ATOMIC); 409 if (!rdata_item) 410 continue; 411 if (kref_get_unless_zero(&rdata->kref)) { 412 rdata_item->rdata = rdata; 413 list_add(&rdata_item->list, &rdata_login_list); 414 } else 415 kfree(rdata_item); 416 } 417 rcu_read_unlock(); 418 /* 419 * Do the fc_rport_login outside of the rcu lock so we don't take a 420 * mutex in an atomic context. 421 */ 422 list_for_each_entry_safe(rdata_item, tmp_rdata_item, &rdata_login_list, 423 list) { 424 list_del(&rdata_item->list); 425 fc_rport_login(rdata_item->rdata); 426 kref_put(&rdata_item->rdata->kref, fc_rport_destroy); 427 kfree(rdata_item); 428 } 429 } 430 431 static void qedf_update_link_speed(struct qedf_ctx *qedf, 432 struct qed_link_output *link) 433 { 434 struct fc_lport *lport = qedf->lport; 435 436 lport->link_speed = FC_PORTSPEED_UNKNOWN; 437 lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN; 438 439 /* Set fc_host link speed */ 440 switch (link->speed) { 441 case 10000: 442 lport->link_speed = FC_PORTSPEED_10GBIT; 443 break; 444 case 25000: 445 lport->link_speed = FC_PORTSPEED_25GBIT; 446 break; 447 case 40000: 448 lport->link_speed = FC_PORTSPEED_40GBIT; 449 break; 450 case 50000: 451 lport->link_speed = FC_PORTSPEED_50GBIT; 452 break; 453 case 100000: 454 lport->link_speed = FC_PORTSPEED_100GBIT; 455 break; 456 default: 457 lport->link_speed = FC_PORTSPEED_UNKNOWN; 458 break; 459 } 460 461 /* 462 * Set supported link speed by querying the supported 463 * capabilities of the link. 464 */ 465 if (link->supported_caps & SUPPORTED_10000baseKR_Full) 466 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT; 467 if (link->supported_caps & SUPPORTED_25000baseKR_Full) 468 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT; 469 if (link->supported_caps & SUPPORTED_40000baseLR4_Full) 470 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT; 471 if (link->supported_caps & SUPPORTED_50000baseKR2_Full) 472 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT; 473 if (link->supported_caps & SUPPORTED_100000baseKR4_Full) 474 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT; 475 fc_host_supported_speeds(lport->host) = lport->link_supported_speeds; 476 } 477 478 static void qedf_link_update(void *dev, struct qed_link_output *link) 479 { 480 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 481 482 if (link->link_up) { 483 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n", 484 link->speed / 1000); 485 486 /* Cancel any pending link down work */ 487 cancel_delayed_work(&qedf->link_update); 488 489 atomic_set(&qedf->link_state, QEDF_LINK_UP); 490 qedf_update_link_speed(qedf, link); 491 492 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) { 493 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 494 "DCBx done.\n"); 495 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 496 queue_delayed_work(qedf->link_update_wq, 497 &qedf->link_recovery, 0); 498 else 499 queue_delayed_work(qedf->link_update_wq, 500 &qedf->link_update, 0); 501 atomic_set(&qedf->link_down_tmo_valid, 0); 502 } 503 504 } else { 505 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n"); 506 507 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 508 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 509 /* 510 * Flag that we're waiting for the link to come back up before 511 * informing the fcoe layer of the event. 512 */ 513 if (qedf_link_down_tmo > 0) { 514 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 515 "Starting link down tmo.\n"); 516 atomic_set(&qedf->link_down_tmo_valid, 1); 517 } 518 qedf->vlan_id = 0; 519 qedf_update_link_speed(qedf, link); 520 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 521 qedf_link_down_tmo * HZ); 522 } 523 } 524 525 526 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type) 527 { 528 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 529 530 QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe " 531 "prio=%d.\n", get->operational.valid, get->operational.enabled, 532 get->operational.app_prio.fcoe); 533 534 if (get->operational.enabled && get->operational.valid) { 535 /* If DCBX was already negotiated on link up then just exit */ 536 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) { 537 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 538 "DCBX already set on link up.\n"); 539 return; 540 } 541 542 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE); 543 544 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 545 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 546 queue_delayed_work(qedf->link_update_wq, 547 &qedf->link_recovery, 0); 548 else 549 queue_delayed_work(qedf->link_update_wq, 550 &qedf->link_update, 0); 551 atomic_set(&qedf->link_down_tmo_valid, 0); 552 } 553 } 554 555 } 556 557 static u32 qedf_get_login_failures(void *cookie) 558 { 559 struct qedf_ctx *qedf; 560 561 qedf = (struct qedf_ctx *)cookie; 562 return qedf->flogi_failed; 563 } 564 565 static struct qed_fcoe_cb_ops qedf_cb_ops = { 566 { 567 .link_update = qedf_link_update, 568 .dcbx_aen = qedf_dcbx_handler, 569 } 570 }; 571 572 /* 573 * Various transport templates. 574 */ 575 576 static struct scsi_transport_template *qedf_fc_transport_template; 577 static struct scsi_transport_template *qedf_fc_vport_transport_template; 578 579 /* 580 * SCSI EH handlers 581 */ 582 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd) 583 { 584 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); 585 struct fc_rport_libfc_priv *rp = rport->dd_data; 586 struct qedf_rport *fcport; 587 struct fc_lport *lport; 588 struct qedf_ctx *qedf; 589 struct qedf_ioreq *io_req; 590 int rc = FAILED; 591 int rval; 592 593 if (fc_remote_port_chkready(rport)) { 594 QEDF_ERR(NULL, "rport not ready\n"); 595 goto out; 596 } 597 598 lport = shost_priv(sc_cmd->device->host); 599 qedf = (struct qedf_ctx *)lport_priv(lport); 600 601 if ((lport->state != LPORT_ST_READY) || !(lport->link_up)) { 602 QEDF_ERR(&(qedf->dbg_ctx), "link not ready.\n"); 603 goto out; 604 } 605 606 fcport = (struct qedf_rport *)&rp[1]; 607 608 io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr; 609 if (!io_req) { 610 QEDF_ERR(&(qedf->dbg_ctx), "io_req is NULL.\n"); 611 rc = SUCCESS; 612 goto out; 613 } 614 615 if (!test_bit(QEDF_CMD_OUTSTANDING, &io_req->flags) || 616 test_bit(QEDF_CMD_IN_CLEANUP, &io_req->flags) || 617 test_bit(QEDF_CMD_IN_ABORT, &io_req->flags)) { 618 QEDF_ERR(&(qedf->dbg_ctx), "io_req xid=0x%x already in " 619 "cleanup or abort processing or already " 620 "completed.\n", io_req->xid); 621 rc = SUCCESS; 622 goto out; 623 } 624 625 QEDF_ERR(&(qedf->dbg_ctx), "Aborting io_req sc_cmd=%p xid=0x%x " 626 "fp_idx=%d.\n", sc_cmd, io_req->xid, io_req->fp_idx); 627 628 if (qedf->stop_io_on_error) { 629 qedf_stop_all_io(qedf); 630 rc = SUCCESS; 631 goto out; 632 } 633 634 init_completion(&io_req->abts_done); 635 rval = qedf_initiate_abts(io_req, true); 636 if (rval) { 637 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n"); 638 goto out; 639 } 640 641 wait_for_completion(&io_req->abts_done); 642 643 if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS || 644 io_req->event == QEDF_IOREQ_EV_ABORT_FAILED || 645 io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) { 646 /* 647 * If we get a reponse to the abort this is success from 648 * the perspective that all references to the command have 649 * been removed from the driver and firmware 650 */ 651 rc = SUCCESS; 652 } else { 653 /* If the abort and cleanup failed then return a failure */ 654 rc = FAILED; 655 } 656 657 if (rc == SUCCESS) 658 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n", 659 io_req->xid); 660 else 661 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n", 662 io_req->xid); 663 664 out: 665 return rc; 666 } 667 668 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd) 669 { 670 QEDF_ERR(NULL, "TARGET RESET Issued..."); 671 return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET); 672 } 673 674 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd) 675 { 676 QEDF_ERR(NULL, "LUN RESET Issued...\n"); 677 return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET); 678 } 679 680 void qedf_wait_for_upload(struct qedf_ctx *qedf) 681 { 682 while (1) { 683 if (atomic_read(&qedf->num_offloads)) 684 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 685 "Waiting for all uploads to complete.\n"); 686 else 687 break; 688 msleep(500); 689 } 690 } 691 692 /* Performs soft reset of qedf_ctx by simulating a link down/up */ 693 static void qedf_ctx_soft_reset(struct fc_lport *lport) 694 { 695 struct qedf_ctx *qedf; 696 697 if (lport->vport) { 698 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n"); 699 return; 700 } 701 702 qedf = lport_priv(lport); 703 704 /* For host reset, essentially do a soft link up/down */ 705 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 706 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 707 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 708 0); 709 qedf_wait_for_upload(qedf); 710 atomic_set(&qedf->link_state, QEDF_LINK_UP); 711 qedf->vlan_id = 0; 712 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 713 0); 714 } 715 716 /* Reset the host by gracefully logging out and then logging back in */ 717 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd) 718 { 719 struct fc_lport *lport; 720 struct qedf_ctx *qedf; 721 722 lport = shost_priv(sc_cmd->device->host); 723 qedf = lport_priv(lport); 724 725 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN || 726 test_bit(QEDF_UNLOADING, &qedf->flags)) 727 return FAILED; 728 729 QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued..."); 730 731 qedf_ctx_soft_reset(lport); 732 733 return SUCCESS; 734 } 735 736 static int qedf_slave_configure(struct scsi_device *sdev) 737 { 738 if (qedf_queue_depth) { 739 scsi_change_queue_depth(sdev, qedf_queue_depth); 740 } 741 742 return 0; 743 } 744 745 static struct scsi_host_template qedf_host_template = { 746 .module = THIS_MODULE, 747 .name = QEDF_MODULE_NAME, 748 .this_id = -1, 749 .cmd_per_lun = 32, 750 .use_clustering = ENABLE_CLUSTERING, 751 .max_sectors = 0xffff, 752 .queuecommand = qedf_queuecommand, 753 .shost_attrs = qedf_host_attrs, 754 .eh_abort_handler = qedf_eh_abort, 755 .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */ 756 .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */ 757 .eh_host_reset_handler = qedf_eh_host_reset, 758 .slave_configure = qedf_slave_configure, 759 .dma_boundary = QED_HW_DMA_BOUNDARY, 760 .sg_tablesize = QEDF_MAX_BDS_PER_CMD, 761 .can_queue = FCOE_PARAMS_NUM_TASKS, 762 .change_queue_depth = scsi_change_queue_depth, 763 }; 764 765 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen) 766 { 767 int rc; 768 769 spin_lock(&qedf_global_lock); 770 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global); 771 spin_unlock(&qedf_global_lock); 772 773 return rc; 774 } 775 776 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id) 777 { 778 struct qedf_rport *fcport; 779 struct fc_rport_priv *rdata; 780 781 rcu_read_lock(); 782 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 783 rdata = fcport->rdata; 784 if (rdata == NULL) 785 continue; 786 if (rdata->ids.port_id == port_id) { 787 rcu_read_unlock(); 788 return fcport; 789 } 790 } 791 rcu_read_unlock(); 792 793 /* Return NULL to caller to let them know fcport was not found */ 794 return NULL; 795 } 796 797 /* Transmits an ELS frame over an offloaded session */ 798 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp) 799 { 800 struct fc_frame_header *fh; 801 int rc = 0; 802 803 fh = fc_frame_header_get(fp); 804 if ((fh->fh_type == FC_TYPE_ELS) && 805 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 806 switch (fc_frame_payload_op(fp)) { 807 case ELS_ADISC: 808 qedf_send_adisc(fcport, fp); 809 rc = 1; 810 break; 811 } 812 } 813 814 return rc; 815 } 816 817 /** 818 * qedf_xmit - qedf FCoE frame transmit function 819 * 820 */ 821 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp) 822 { 823 struct fc_lport *base_lport; 824 struct qedf_ctx *qedf; 825 struct ethhdr *eh; 826 struct fcoe_crc_eof *cp; 827 struct sk_buff *skb; 828 struct fc_frame_header *fh; 829 struct fcoe_hdr *hp; 830 u8 sof, eof; 831 u32 crc; 832 unsigned int hlen, tlen, elen; 833 int wlen; 834 struct fc_stats *stats; 835 struct fc_lport *tmp_lport; 836 struct fc_lport *vn_port = NULL; 837 struct qedf_rport *fcport; 838 int rc; 839 u16 vlan_tci = 0; 840 841 qedf = (struct qedf_ctx *)lport_priv(lport); 842 843 fh = fc_frame_header_get(fp); 844 skb = fp_skb(fp); 845 846 /* Filter out traffic to other NPIV ports on the same host */ 847 if (lport->vport) 848 base_lport = shost_priv(vport_to_shost(lport->vport)); 849 else 850 base_lport = lport; 851 852 /* Flag if the destination is the base port */ 853 if (base_lport->port_id == ntoh24(fh->fh_d_id)) { 854 vn_port = base_lport; 855 } else { 856 /* Got through the list of vports attached to the base_lport 857 * and see if we have a match with the destination address. 858 */ 859 list_for_each_entry(tmp_lport, &base_lport->vports, list) { 860 if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) { 861 vn_port = tmp_lport; 862 break; 863 } 864 } 865 } 866 if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) { 867 struct fc_rport_priv *rdata = NULL; 868 869 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 870 "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id)); 871 kfree_skb(skb); 872 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id)); 873 if (rdata) 874 rdata->retries = lport->max_rport_retry_count; 875 return -EINVAL; 876 } 877 /* End NPIV filtering */ 878 879 if (!qedf->ctlr.sel_fcf) { 880 kfree_skb(skb); 881 return 0; 882 } 883 884 if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) { 885 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n"); 886 kfree_skb(skb); 887 return 0; 888 } 889 890 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 891 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n"); 892 kfree_skb(skb); 893 return 0; 894 } 895 896 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 897 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb)) 898 return 0; 899 } 900 901 /* Check to see if this needs to be sent on an offloaded session */ 902 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 903 904 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 905 rc = qedf_xmit_l2_frame(fcport, fp); 906 /* 907 * If the frame was successfully sent over the middle path 908 * then do not try to also send it over the LL2 path 909 */ 910 if (rc) 911 return 0; 912 } 913 914 sof = fr_sof(fp); 915 eof = fr_eof(fp); 916 917 elen = sizeof(struct ethhdr); 918 hlen = sizeof(struct fcoe_hdr); 919 tlen = sizeof(struct fcoe_crc_eof); 920 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; 921 922 skb->ip_summed = CHECKSUM_NONE; 923 crc = fcoe_fc_crc(fp); 924 925 /* copy port crc and eof to the skb buff */ 926 if (skb_is_nonlinear(skb)) { 927 skb_frag_t *frag; 928 929 if (qedf_get_paged_crc_eof(skb, tlen)) { 930 kfree_skb(skb); 931 return -ENOMEM; 932 } 933 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; 934 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset; 935 } else { 936 cp = skb_put(skb, tlen); 937 } 938 939 memset(cp, 0, sizeof(*cp)); 940 cp->fcoe_eof = eof; 941 cp->fcoe_crc32 = cpu_to_le32(~crc); 942 if (skb_is_nonlinear(skb)) { 943 kunmap_atomic(cp); 944 cp = NULL; 945 } 946 947 948 /* adjust skb network/transport offsets to match mac/fcoe/port */ 949 skb_push(skb, elen + hlen); 950 skb_reset_mac_header(skb); 951 skb_reset_network_header(skb); 952 skb->mac_len = elen; 953 skb->protocol = htons(ETH_P_FCOE); 954 955 /* 956 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN 957 * for FIP/FCoE traffic. 958 */ 959 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id); 960 961 /* fill up mac and fcoe headers */ 962 eh = eth_hdr(skb); 963 eh->h_proto = htons(ETH_P_FCOE); 964 if (qedf->ctlr.map_dest) 965 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); 966 else 967 /* insert GW address */ 968 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr); 969 970 /* Set the source MAC address */ 971 ether_addr_copy(eh->h_source, qedf->data_src_addr); 972 973 hp = (struct fcoe_hdr *)(eh + 1); 974 memset(hp, 0, sizeof(*hp)); 975 if (FC_FCOE_VER) 976 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); 977 hp->fcoe_sof = sof; 978 979 /*update tx stats */ 980 stats = per_cpu_ptr(lport->stats, get_cpu()); 981 stats->TxFrames++; 982 stats->TxWords += wlen; 983 put_cpu(); 984 985 /* Get VLAN ID from skb for printing purposes */ 986 __vlan_hwaccel_get_tag(skb, &vlan_tci); 987 988 /* send down to lld */ 989 fr_dev(fp) = lport; 990 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: " 991 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n", 992 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type, 993 vlan_tci); 994 if (qedf_dump_frames) 995 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 996 1, skb->data, skb->len, false); 997 qed_ops->ll2->start_xmit(qedf->cdev, skb); 998 999 return 0; 1000 } 1001 1002 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1003 { 1004 int rval = 0; 1005 u32 *pbl; 1006 dma_addr_t page; 1007 int num_pages; 1008 1009 /* Calculate appropriate queue and PBL sizes */ 1010 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 1011 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE); 1012 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) * 1013 sizeof(void *); 1014 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE; 1015 1016 fcport->sq = dma_zalloc_coherent(&qedf->pdev->dev, 1017 fcport->sq_mem_size, &fcport->sq_dma, GFP_KERNEL); 1018 if (!fcport->sq) { 1019 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n"); 1020 rval = 1; 1021 goto out; 1022 } 1023 1024 fcport->sq_pbl = dma_zalloc_coherent(&qedf->pdev->dev, 1025 fcport->sq_pbl_size, &fcport->sq_pbl_dma, GFP_KERNEL); 1026 if (!fcport->sq_pbl) { 1027 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n"); 1028 rval = 1; 1029 goto out_free_sq; 1030 } 1031 1032 /* Create PBL */ 1033 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE; 1034 page = fcport->sq_dma; 1035 pbl = (u32 *)fcport->sq_pbl; 1036 1037 while (num_pages--) { 1038 *pbl = U64_LO(page); 1039 pbl++; 1040 *pbl = U64_HI(page); 1041 pbl++; 1042 page += QEDF_PAGE_SIZE; 1043 } 1044 1045 return rval; 1046 1047 out_free_sq: 1048 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq, 1049 fcport->sq_dma); 1050 out: 1051 return rval; 1052 } 1053 1054 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1055 { 1056 if (fcport->sq_pbl) 1057 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size, 1058 fcport->sq_pbl, fcport->sq_pbl_dma); 1059 if (fcport->sq) 1060 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1061 fcport->sq, fcport->sq_dma); 1062 } 1063 1064 static int qedf_offload_connection(struct qedf_ctx *qedf, 1065 struct qedf_rport *fcport) 1066 { 1067 struct qed_fcoe_params_offload conn_info; 1068 u32 port_id; 1069 int rval; 1070 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe)); 1071 1072 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection " 1073 "portid=%06x.\n", fcport->rdata->ids.port_id); 1074 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle, 1075 &fcport->fw_cid, &fcport->p_doorbell); 1076 if (rval) { 1077 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection " 1078 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1079 rval = 1; /* For some reason qed returns 0 on failure here */ 1080 goto out; 1081 } 1082 1083 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x " 1084 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id, 1085 fcport->fw_cid, fcport->handle); 1086 1087 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload)); 1088 1089 /* Fill in the offload connection info */ 1090 conn_info.sq_pbl_addr = fcport->sq_pbl_dma; 1091 1092 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl); 1093 conn_info.sq_next_page_addr = 1094 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8)); 1095 1096 /* Need to use our FCoE MAC for the offload session */ 1097 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr); 1098 1099 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr); 1100 1101 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size; 1102 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20; 1103 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */ 1104 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size; 1105 1106 /* Set VLAN data */ 1107 conn_info.vlan_tag = qedf->vlan_id << 1108 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT; 1109 conn_info.vlan_tag |= 1110 qedf_default_prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT; 1111 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK << 1112 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT); 1113 1114 /* Set host port source id */ 1115 port_id = fc_host_port_id(qedf->lport->host); 1116 fcport->sid = port_id; 1117 conn_info.s_id.addr_hi = (port_id & 0x000000FF); 1118 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1119 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1120 1121 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq; 1122 1123 /* Set remote port destination id */ 1124 port_id = fcport->rdata->rport->port_id; 1125 conn_info.d_id.addr_hi = (port_id & 0x000000FF); 1126 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1127 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1128 1129 conn_info.def_q_idx = 0; /* Default index for send queue? */ 1130 1131 /* Set FC-TAPE specific flags if needed */ 1132 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) { 1133 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, 1134 "Enable CONF, REC for portid=%06x.\n", 1135 fcport->rdata->ids.port_id); 1136 conn_info.flags |= 1 << 1137 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT; 1138 conn_info.flags |= 1139 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) << 1140 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT; 1141 } 1142 1143 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info); 1144 if (rval) { 1145 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection " 1146 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1147 goto out_free_conn; 1148 } else 1149 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload " 1150 "succeeded portid=%06x total_sqe=%d.\n", 1151 fcport->rdata->ids.port_id, total_sqe); 1152 1153 spin_lock_init(&fcport->rport_lock); 1154 atomic_set(&fcport->free_sqes, total_sqe); 1155 return 0; 1156 out_free_conn: 1157 qed_ops->release_conn(qedf->cdev, fcport->handle); 1158 out: 1159 return rval; 1160 } 1161 1162 #define QEDF_TERM_BUFF_SIZE 10 1163 static void qedf_upload_connection(struct qedf_ctx *qedf, 1164 struct qedf_rport *fcport) 1165 { 1166 void *term_params; 1167 dma_addr_t term_params_dma; 1168 1169 /* Term params needs to be a DMA coherent buffer as qed shared the 1170 * physical DMA address with the firmware. The buffer may be used in 1171 * the receive path so we may eventually have to move this. 1172 */ 1173 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, 1174 &term_params_dma, GFP_KERNEL); 1175 1176 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection " 1177 "port_id=%06x.\n", fcport->rdata->ids.port_id); 1178 1179 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma); 1180 qed_ops->release_conn(qedf->cdev, fcport->handle); 1181 1182 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params, 1183 term_params_dma); 1184 } 1185 1186 static void qedf_cleanup_fcport(struct qedf_ctx *qedf, 1187 struct qedf_rport *fcport) 1188 { 1189 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n", 1190 fcport->rdata->ids.port_id); 1191 1192 /* Flush any remaining i/o's before we upload the connection */ 1193 qedf_flush_active_ios(fcport, -1); 1194 1195 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) 1196 qedf_upload_connection(qedf, fcport); 1197 qedf_free_sq(qedf, fcport); 1198 fcport->rdata = NULL; 1199 fcport->qedf = NULL; 1200 } 1201 1202 /** 1203 * This event_callback is called after successful completion of libfc 1204 * initiated target login. qedf can proceed with initiating the session 1205 * establishment. 1206 */ 1207 static void qedf_rport_event_handler(struct fc_lport *lport, 1208 struct fc_rport_priv *rdata, 1209 enum fc_rport_event event) 1210 { 1211 struct qedf_ctx *qedf = lport_priv(lport); 1212 struct fc_rport *rport = rdata->rport; 1213 struct fc_rport_libfc_priv *rp; 1214 struct qedf_rport *fcport; 1215 u32 port_id; 1216 int rval; 1217 unsigned long flags; 1218 1219 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, " 1220 "port_id = 0x%x\n", event, rdata->ids.port_id); 1221 1222 switch (event) { 1223 case RPORT_EV_READY: 1224 if (!rport) { 1225 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n"); 1226 break; 1227 } 1228 1229 rp = rport->dd_data; 1230 fcport = (struct qedf_rport *)&rp[1]; 1231 fcport->qedf = qedf; 1232 1233 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) { 1234 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading " 1235 "portid=0x%x as max number of offloaded sessions " 1236 "reached.\n", rdata->ids.port_id); 1237 return; 1238 } 1239 1240 /* 1241 * Don't try to offload the session again. Can happen when we 1242 * get an ADISC 1243 */ 1244 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1245 QEDF_WARN(&(qedf->dbg_ctx), "Session already " 1246 "offloaded, portid=0x%x.\n", 1247 rdata->ids.port_id); 1248 return; 1249 } 1250 1251 if (rport->port_id == FC_FID_DIR_SERV) { 1252 /* 1253 * qedf_rport structure doesn't exist for 1254 * directory server. 1255 * We should not come here, as lport will 1256 * take care of fabric login 1257 */ 1258 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not " 1259 "exist for dir server port_id=%x\n", 1260 rdata->ids.port_id); 1261 break; 1262 } 1263 1264 if (rdata->spp_type != FC_TYPE_FCP) { 1265 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1266 "Not offloading since spp type isn't FCP\n"); 1267 break; 1268 } 1269 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1270 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1271 "Not FCP target so not offloading\n"); 1272 break; 1273 } 1274 1275 fcport->rdata = rdata; 1276 fcport->rport = rport; 1277 1278 rval = qedf_alloc_sq(qedf, fcport); 1279 if (rval) { 1280 qedf_cleanup_fcport(qedf, fcport); 1281 break; 1282 } 1283 1284 /* Set device type */ 1285 if (rdata->flags & FC_RP_FLAGS_RETRY && 1286 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET && 1287 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) { 1288 fcport->dev_type = QEDF_RPORT_TYPE_TAPE; 1289 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1290 "portid=%06x is a TAPE device.\n", 1291 rdata->ids.port_id); 1292 } else { 1293 fcport->dev_type = QEDF_RPORT_TYPE_DISK; 1294 } 1295 1296 rval = qedf_offload_connection(qedf, fcport); 1297 if (rval) { 1298 qedf_cleanup_fcport(qedf, fcport); 1299 break; 1300 } 1301 1302 /* Add fcport to list of qedf_ctx list of offloaded ports */ 1303 spin_lock_irqsave(&qedf->hba_lock, flags); 1304 list_add_rcu(&fcport->peers, &qedf->fcports); 1305 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1306 1307 /* 1308 * Set the session ready bit to let everyone know that this 1309 * connection is ready for I/O 1310 */ 1311 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags); 1312 atomic_inc(&qedf->num_offloads); 1313 1314 break; 1315 case RPORT_EV_LOGO: 1316 case RPORT_EV_FAILED: 1317 case RPORT_EV_STOP: 1318 port_id = rdata->ids.port_id; 1319 if (port_id == FC_FID_DIR_SERV) 1320 break; 1321 1322 if (!rport) { 1323 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1324 "port_id=%x - rport notcreated Yet!!\n", port_id); 1325 break; 1326 } 1327 rp = rport->dd_data; 1328 /* 1329 * Perform session upload. Note that rdata->peers is already 1330 * removed from disc->rports list before we get this event. 1331 */ 1332 fcport = (struct qedf_rport *)&rp[1]; 1333 1334 /* Only free this fcport if it is offloaded already */ 1335 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1336 set_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags); 1337 qedf_cleanup_fcport(qedf, fcport); 1338 1339 /* 1340 * Remove fcport to list of qedf_ctx list of offloaded 1341 * ports 1342 */ 1343 spin_lock_irqsave(&qedf->hba_lock, flags); 1344 list_del_rcu(&fcport->peers); 1345 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1346 1347 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1348 &fcport->flags); 1349 atomic_dec(&qedf->num_offloads); 1350 } 1351 1352 break; 1353 1354 case RPORT_EV_NONE: 1355 break; 1356 } 1357 } 1358 1359 static void qedf_abort_io(struct fc_lport *lport) 1360 { 1361 /* NO-OP but need to fill in the template */ 1362 } 1363 1364 static void qedf_fcp_cleanup(struct fc_lport *lport) 1365 { 1366 /* 1367 * NO-OP but need to fill in template to prevent a NULL 1368 * function pointer dereference during link down. I/Os 1369 * will be flushed when port is uploaded. 1370 */ 1371 } 1372 1373 static struct libfc_function_template qedf_lport_template = { 1374 .frame_send = qedf_xmit, 1375 .fcp_abort_io = qedf_abort_io, 1376 .fcp_cleanup = qedf_fcp_cleanup, 1377 .rport_event_callback = qedf_rport_event_handler, 1378 .elsct_send = qedf_elsct_send, 1379 }; 1380 1381 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf) 1382 { 1383 fcoe_ctlr_init(&qedf->ctlr, FIP_ST_AUTO); 1384 1385 qedf->ctlr.send = qedf_fip_send; 1386 qedf->ctlr.get_src_addr = qedf_get_src_mac; 1387 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac); 1388 } 1389 1390 static void qedf_setup_fdmi(struct qedf_ctx *qedf) 1391 { 1392 struct fc_lport *lport = qedf->lport; 1393 struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host); 1394 u8 buf[8]; 1395 int i, pos; 1396 1397 /* 1398 * fdmi_enabled needs to be set for libfc to execute FDMI registration. 1399 */ 1400 lport->fdmi_enabled = 1; 1401 1402 /* 1403 * Setup the necessary fc_host attributes to that will be used to fill 1404 * in the FDMI information. 1405 */ 1406 1407 /* Get the PCI-e Device Serial Number Capability */ 1408 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN); 1409 if (pos) { 1410 pos += 4; 1411 for (i = 0; i < 8; i++) 1412 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]); 1413 1414 snprintf(fc_host->serial_number, 1415 sizeof(fc_host->serial_number), 1416 "%02X%02X%02X%02X%02X%02X%02X%02X", 1417 buf[7], buf[6], buf[5], buf[4], 1418 buf[3], buf[2], buf[1], buf[0]); 1419 } else 1420 snprintf(fc_host->serial_number, 1421 sizeof(fc_host->serial_number), "Unknown"); 1422 1423 snprintf(fc_host->manufacturer, 1424 sizeof(fc_host->manufacturer), "%s", "Cavium Inc."); 1425 1426 snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000"); 1427 1428 snprintf(fc_host->model_description, sizeof(fc_host->model_description), 1429 "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller" 1430 "(FCoE)"); 1431 1432 snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version), 1433 "Rev %d", qedf->pdev->revision); 1434 1435 snprintf(fc_host->driver_version, sizeof(fc_host->driver_version), 1436 "%s", QEDF_VERSION); 1437 1438 snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version), 1439 "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION, 1440 FW_REVISION_VERSION, FW_ENGINEERING_VERSION); 1441 } 1442 1443 static int qedf_lport_setup(struct qedf_ctx *qedf) 1444 { 1445 struct fc_lport *lport = qedf->lport; 1446 1447 lport->link_up = 0; 1448 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1449 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1450 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1451 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1452 lport->boot_time = jiffies; 1453 lport->e_d_tov = 2 * 1000; 1454 lport->r_a_tov = 10 * 1000; 1455 1456 /* Set NPIV support */ 1457 lport->does_npiv = 1; 1458 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV; 1459 1460 fc_set_wwnn(lport, qedf->wwnn); 1461 fc_set_wwpn(lport, qedf->wwpn); 1462 1463 fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0); 1464 1465 /* Allocate the exchange manager */ 1466 fc_exch_mgr_alloc(lport, FC_CLASS_3, qedf->max_scsi_xid + 1, 1467 qedf->max_els_xid, NULL); 1468 1469 if (fc_lport_init_stats(lport)) 1470 return -ENOMEM; 1471 1472 /* Finish lport config */ 1473 fc_lport_config(lport); 1474 1475 /* Set max frame size */ 1476 fc_set_mfs(lport, QEDF_MFS); 1477 fc_host_maxframe_size(lport->host) = lport->mfs; 1478 1479 /* Set default dev_loss_tmo based on module parameter */ 1480 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo; 1481 1482 /* Set symbolic node name */ 1483 snprintf(fc_host_symbolic_name(lport->host), 256, 1484 "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION); 1485 1486 qedf_setup_fdmi(qedf); 1487 1488 return 0; 1489 } 1490 1491 /* 1492 * NPIV functions 1493 */ 1494 1495 static int qedf_vport_libfc_config(struct fc_vport *vport, 1496 struct fc_lport *lport) 1497 { 1498 lport->link_up = 0; 1499 lport->qfull = 0; 1500 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1501 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1502 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1503 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1504 lport->boot_time = jiffies; 1505 lport->e_d_tov = 2 * 1000; 1506 lport->r_a_tov = 10 * 1000; 1507 lport->does_npiv = 1; /* Temporary until we add NPIV support */ 1508 1509 /* Allocate stats for vport */ 1510 if (fc_lport_init_stats(lport)) 1511 return -ENOMEM; 1512 1513 /* Finish lport config */ 1514 fc_lport_config(lport); 1515 1516 /* offload related configuration */ 1517 lport->crc_offload = 0; 1518 lport->seq_offload = 0; 1519 lport->lro_enabled = 0; 1520 lport->lro_xid = 0; 1521 lport->lso_max = 0; 1522 1523 return 0; 1524 } 1525 1526 static int qedf_vport_create(struct fc_vport *vport, bool disabled) 1527 { 1528 struct Scsi_Host *shost = vport_to_shost(vport); 1529 struct fc_lport *n_port = shost_priv(shost); 1530 struct fc_lport *vn_port; 1531 struct qedf_ctx *base_qedf = lport_priv(n_port); 1532 struct qedf_ctx *vport_qedf; 1533 1534 char buf[32]; 1535 int rc = 0; 1536 1537 rc = fcoe_validate_vport_create(vport); 1538 if (rc) { 1539 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1540 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, " 1541 "WWPN (0x%s) already exists.\n", buf); 1542 goto err1; 1543 } 1544 1545 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) { 1546 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport " 1547 "because link is not up.\n"); 1548 rc = -EIO; 1549 goto err1; 1550 } 1551 1552 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx)); 1553 if (!vn_port) { 1554 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport " 1555 "for vport.\n"); 1556 rc = -ENOMEM; 1557 goto err1; 1558 } 1559 1560 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1561 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n", 1562 buf); 1563 1564 /* Copy some fields from base_qedf */ 1565 vport_qedf = lport_priv(vn_port); 1566 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx)); 1567 1568 /* Set qedf data specific to this vport */ 1569 vport_qedf->lport = vn_port; 1570 /* Use same hba_lock as base_qedf */ 1571 vport_qedf->hba_lock = base_qedf->hba_lock; 1572 vport_qedf->pdev = base_qedf->pdev; 1573 vport_qedf->cmd_mgr = base_qedf->cmd_mgr; 1574 init_completion(&vport_qedf->flogi_compl); 1575 INIT_LIST_HEAD(&vport_qedf->fcports); 1576 1577 rc = qedf_vport_libfc_config(vport, vn_port); 1578 if (rc) { 1579 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory " 1580 "for lport stats.\n"); 1581 goto err2; 1582 } 1583 1584 fc_set_wwnn(vn_port, vport->node_name); 1585 fc_set_wwpn(vn_port, vport->port_name); 1586 vport_qedf->wwnn = vn_port->wwnn; 1587 vport_qedf->wwpn = vn_port->wwpn; 1588 1589 vn_port->host->transportt = qedf_fc_vport_transport_template; 1590 vn_port->host->can_queue = QEDF_MAX_ELS_XID; 1591 vn_port->host->max_lun = qedf_max_lun; 1592 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD; 1593 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN; 1594 1595 rc = scsi_add_host(vn_port->host, &vport->dev); 1596 if (rc) { 1597 QEDF_WARN(&(base_qedf->dbg_ctx), "Error adding Scsi_Host.\n"); 1598 goto err2; 1599 } 1600 1601 /* Set default dev_loss_tmo based on module parameter */ 1602 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo; 1603 1604 /* Init libfc stuffs */ 1605 memcpy(&vn_port->tt, &qedf_lport_template, 1606 sizeof(qedf_lport_template)); 1607 fc_exch_init(vn_port); 1608 fc_elsct_init(vn_port); 1609 fc_lport_init(vn_port); 1610 fc_disc_init(vn_port); 1611 fc_disc_config(vn_port, vn_port); 1612 1613 1614 /* Allocate the exchange manager */ 1615 shost = vport_to_shost(vport); 1616 n_port = shost_priv(shost); 1617 fc_exch_mgr_list_clone(n_port, vn_port); 1618 1619 /* Set max frame size */ 1620 fc_set_mfs(vn_port, QEDF_MFS); 1621 1622 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN; 1623 1624 if (disabled) { 1625 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1626 } else { 1627 vn_port->boot_time = jiffies; 1628 fc_fabric_login(vn_port); 1629 fc_vport_setlink(vn_port); 1630 } 1631 1632 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n", 1633 vn_port); 1634 1635 /* Set up debug context for vport */ 1636 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no; 1637 vport_qedf->dbg_ctx.pdev = base_qedf->pdev; 1638 1639 err2: 1640 scsi_host_put(vn_port->host); 1641 err1: 1642 return rc; 1643 } 1644 1645 static int qedf_vport_destroy(struct fc_vport *vport) 1646 { 1647 struct Scsi_Host *shost = vport_to_shost(vport); 1648 struct fc_lport *n_port = shost_priv(shost); 1649 struct fc_lport *vn_port = vport->dd_data; 1650 1651 mutex_lock(&n_port->lp_mutex); 1652 list_del(&vn_port->list); 1653 mutex_unlock(&n_port->lp_mutex); 1654 1655 fc_fabric_logoff(vn_port); 1656 fc_lport_destroy(vn_port); 1657 1658 /* Detach from scsi-ml */ 1659 fc_remove_host(vn_port->host); 1660 scsi_remove_host(vn_port->host); 1661 1662 /* 1663 * Only try to release the exchange manager if the vn_port 1664 * configuration is complete. 1665 */ 1666 if (vn_port->state == LPORT_ST_READY) 1667 fc_exch_mgr_free(vn_port); 1668 1669 /* Free memory used by statistical counters */ 1670 fc_lport_free_stats(vn_port); 1671 1672 /* Release Scsi_Host */ 1673 if (vn_port->host) 1674 scsi_host_put(vn_port->host); 1675 1676 return 0; 1677 } 1678 1679 static int qedf_vport_disable(struct fc_vport *vport, bool disable) 1680 { 1681 struct fc_lport *lport = vport->dd_data; 1682 1683 if (disable) { 1684 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1685 fc_fabric_logoff(lport); 1686 } else { 1687 lport->boot_time = jiffies; 1688 fc_fabric_login(lport); 1689 fc_vport_setlink(lport); 1690 } 1691 return 0; 1692 } 1693 1694 /* 1695 * During removal we need to wait for all the vports associated with a port 1696 * to be destroyed so we avoid a race condition where libfc is still trying 1697 * to reap vports while the driver remove function has already reaped the 1698 * driver contexts associated with the physical port. 1699 */ 1700 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf) 1701 { 1702 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host); 1703 1704 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 1705 "Entered.\n"); 1706 while (fc_host->npiv_vports_inuse > 0) { 1707 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 1708 "Waiting for all vports to be reaped.\n"); 1709 msleep(1000); 1710 } 1711 } 1712 1713 /** 1714 * qedf_fcoe_reset - Resets the fcoe 1715 * 1716 * @shost: shost the reset is from 1717 * 1718 * Returns: always 0 1719 */ 1720 static int qedf_fcoe_reset(struct Scsi_Host *shost) 1721 { 1722 struct fc_lport *lport = shost_priv(shost); 1723 1724 qedf_ctx_soft_reset(lport); 1725 return 0; 1726 } 1727 1728 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host 1729 *shost) 1730 { 1731 struct fc_host_statistics *qedf_stats; 1732 struct fc_lport *lport = shost_priv(shost); 1733 struct qedf_ctx *qedf = lport_priv(lport); 1734 struct qed_fcoe_stats *fw_fcoe_stats; 1735 1736 qedf_stats = fc_get_host_stats(shost); 1737 1738 /* We don't collect offload stats for specific NPIV ports */ 1739 if (lport->vport) 1740 goto out; 1741 1742 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL); 1743 if (!fw_fcoe_stats) { 1744 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for " 1745 "fw_fcoe_stats.\n"); 1746 goto out; 1747 } 1748 1749 /* Query firmware for offload stats */ 1750 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats); 1751 1752 /* 1753 * The expectation is that we add our offload stats to the stats 1754 * being maintained by libfc each time the fc_get_host_status callback 1755 * is invoked. The additions are not carried over for each call to 1756 * the fc_get_host_stats callback. 1757 */ 1758 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt + 1759 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt + 1760 fw_fcoe_stats->fcoe_tx_other_pkt_cnt; 1761 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt + 1762 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt + 1763 fw_fcoe_stats->fcoe_rx_other_pkt_cnt; 1764 qedf_stats->fcp_input_megabytes += 1765 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000); 1766 qedf_stats->fcp_output_megabytes += 1767 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000); 1768 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4; 1769 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4; 1770 qedf_stats->invalid_crc_count += 1771 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt; 1772 qedf_stats->dumped_frames = 1773 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 1774 qedf_stats->error_frames += 1775 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 1776 qedf_stats->fcp_input_requests += qedf->input_requests; 1777 qedf_stats->fcp_output_requests += qedf->output_requests; 1778 qedf_stats->fcp_control_requests += qedf->control_requests; 1779 qedf_stats->fcp_packet_aborts += qedf->packet_aborts; 1780 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures; 1781 1782 kfree(fw_fcoe_stats); 1783 out: 1784 return qedf_stats; 1785 } 1786 1787 static struct fc_function_template qedf_fc_transport_fn = { 1788 .show_host_node_name = 1, 1789 .show_host_port_name = 1, 1790 .show_host_supported_classes = 1, 1791 .show_host_supported_fc4s = 1, 1792 .show_host_active_fc4s = 1, 1793 .show_host_maxframe_size = 1, 1794 1795 .show_host_port_id = 1, 1796 .show_host_supported_speeds = 1, 1797 .get_host_speed = fc_get_host_speed, 1798 .show_host_speed = 1, 1799 .show_host_port_type = 1, 1800 .get_host_port_state = fc_get_host_port_state, 1801 .show_host_port_state = 1, 1802 .show_host_symbolic_name = 1, 1803 1804 /* 1805 * Tell FC transport to allocate enough space to store the backpointer 1806 * for the associate qedf_rport struct. 1807 */ 1808 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 1809 sizeof(struct qedf_rport)), 1810 .show_rport_maxframe_size = 1, 1811 .show_rport_supported_classes = 1, 1812 .show_host_fabric_name = 1, 1813 .show_starget_node_name = 1, 1814 .show_starget_port_name = 1, 1815 .show_starget_port_id = 1, 1816 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 1817 .show_rport_dev_loss_tmo = 1, 1818 .get_fc_host_stats = qedf_fc_get_host_stats, 1819 .issue_fc_host_lip = qedf_fcoe_reset, 1820 .vport_create = qedf_vport_create, 1821 .vport_delete = qedf_vport_destroy, 1822 .vport_disable = qedf_vport_disable, 1823 .bsg_request = fc_lport_bsg_request, 1824 }; 1825 1826 static struct fc_function_template qedf_fc_vport_transport_fn = { 1827 .show_host_node_name = 1, 1828 .show_host_port_name = 1, 1829 .show_host_supported_classes = 1, 1830 .show_host_supported_fc4s = 1, 1831 .show_host_active_fc4s = 1, 1832 .show_host_maxframe_size = 1, 1833 .show_host_port_id = 1, 1834 .show_host_supported_speeds = 1, 1835 .get_host_speed = fc_get_host_speed, 1836 .show_host_speed = 1, 1837 .show_host_port_type = 1, 1838 .get_host_port_state = fc_get_host_port_state, 1839 .show_host_port_state = 1, 1840 .show_host_symbolic_name = 1, 1841 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 1842 sizeof(struct qedf_rport)), 1843 .show_rport_maxframe_size = 1, 1844 .show_rport_supported_classes = 1, 1845 .show_host_fabric_name = 1, 1846 .show_starget_node_name = 1, 1847 .show_starget_port_name = 1, 1848 .show_starget_port_id = 1, 1849 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 1850 .show_rport_dev_loss_tmo = 1, 1851 .get_fc_host_stats = fc_get_host_stats, 1852 .issue_fc_host_lip = qedf_fcoe_reset, 1853 .bsg_request = fc_lport_bsg_request, 1854 }; 1855 1856 static bool qedf_fp_has_work(struct qedf_fastpath *fp) 1857 { 1858 struct qedf_ctx *qedf = fp->qedf; 1859 struct global_queue *que; 1860 struct qed_sb_info *sb_info = fp->sb_info; 1861 struct status_block_e4 *sb = sb_info->sb_virt; 1862 u16 prod_idx; 1863 1864 /* Get the pointer to the global CQ this completion is on */ 1865 que = qedf->global_queues[fp->sb_id]; 1866 1867 /* Be sure all responses have been written to PI */ 1868 rmb(); 1869 1870 /* Get the current firmware producer index */ 1871 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 1872 1873 return (que->cq_prod_idx != prod_idx); 1874 } 1875 1876 /* 1877 * Interrupt handler code. 1878 */ 1879 1880 /* Process completion queue and copy CQE contents for deferred processesing 1881 * 1882 * Return true if we should wake the I/O thread, false if not. 1883 */ 1884 static bool qedf_process_completions(struct qedf_fastpath *fp) 1885 { 1886 struct qedf_ctx *qedf = fp->qedf; 1887 struct qed_sb_info *sb_info = fp->sb_info; 1888 struct status_block_e4 *sb = sb_info->sb_virt; 1889 struct global_queue *que; 1890 u16 prod_idx; 1891 struct fcoe_cqe *cqe; 1892 struct qedf_io_work *io_work; 1893 int num_handled = 0; 1894 unsigned int cpu; 1895 struct qedf_ioreq *io_req = NULL; 1896 u16 xid; 1897 u16 new_cqes; 1898 u32 comp_type; 1899 1900 /* Get the current firmware producer index */ 1901 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 1902 1903 /* Get the pointer to the global CQ this completion is on */ 1904 que = qedf->global_queues[fp->sb_id]; 1905 1906 /* Calculate the amount of new elements since last processing */ 1907 new_cqes = (prod_idx >= que->cq_prod_idx) ? 1908 (prod_idx - que->cq_prod_idx) : 1909 0x10000 - que->cq_prod_idx + prod_idx; 1910 1911 /* Save producer index */ 1912 que->cq_prod_idx = prod_idx; 1913 1914 while (new_cqes) { 1915 fp->completions++; 1916 num_handled++; 1917 cqe = &que->cq[que->cq_cons_idx]; 1918 1919 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 1920 FCOE_CQE_CQE_TYPE_MASK; 1921 1922 /* 1923 * Process unsolicited CQEs directly in the interrupt handler 1924 * sine we need the fastpath ID 1925 */ 1926 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) { 1927 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL, 1928 "Unsolicated CQE.\n"); 1929 qedf_process_unsol_compl(qedf, fp->sb_id, cqe); 1930 /* 1931 * Don't add a work list item. Increment consumer 1932 * consumer index and move on. 1933 */ 1934 goto inc_idx; 1935 } 1936 1937 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 1938 io_req = &qedf->cmd_mgr->cmds[xid]; 1939 1940 /* 1941 * Figure out which percpu thread we should queue this I/O 1942 * on. 1943 */ 1944 if (!io_req) 1945 /* If there is not io_req assocated with this CQE 1946 * just queue it on CPU 0 1947 */ 1948 cpu = 0; 1949 else { 1950 cpu = io_req->cpu; 1951 io_req->int_cpu = smp_processor_id(); 1952 } 1953 1954 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC); 1955 if (!io_work) { 1956 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate " 1957 "work for I/O completion.\n"); 1958 continue; 1959 } 1960 memset(io_work, 0, sizeof(struct qedf_io_work)); 1961 1962 INIT_WORK(&io_work->work, qedf_fp_io_handler); 1963 1964 /* Copy contents of CQE for deferred processing */ 1965 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe)); 1966 1967 io_work->qedf = fp->qedf; 1968 io_work->fp = NULL; /* Only used for unsolicited frames */ 1969 1970 queue_work_on(cpu, qedf_io_wq, &io_work->work); 1971 1972 inc_idx: 1973 que->cq_cons_idx++; 1974 if (que->cq_cons_idx == fp->cq_num_entries) 1975 que->cq_cons_idx = 0; 1976 new_cqes--; 1977 } 1978 1979 return true; 1980 } 1981 1982 1983 /* MSI-X fastpath handler code */ 1984 static irqreturn_t qedf_msix_handler(int irq, void *dev_id) 1985 { 1986 struct qedf_fastpath *fp = dev_id; 1987 1988 if (!fp) { 1989 QEDF_ERR(NULL, "fp is null.\n"); 1990 return IRQ_HANDLED; 1991 } 1992 if (!fp->sb_info) { 1993 QEDF_ERR(NULL, "fp->sb_info in null."); 1994 return IRQ_HANDLED; 1995 } 1996 1997 /* 1998 * Disable interrupts for this status block while we process new 1999 * completions 2000 */ 2001 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/); 2002 2003 while (1) { 2004 qedf_process_completions(fp); 2005 2006 if (qedf_fp_has_work(fp) == 0) { 2007 /* Update the sb information */ 2008 qed_sb_update_sb_idx(fp->sb_info); 2009 2010 /* Check for more work */ 2011 rmb(); 2012 2013 if (qedf_fp_has_work(fp) == 0) { 2014 /* Re-enable interrupts */ 2015 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 2016 return IRQ_HANDLED; 2017 } 2018 } 2019 } 2020 2021 /* Do we ever want to break out of above loop? */ 2022 return IRQ_HANDLED; 2023 } 2024 2025 /* simd handler for MSI/INTa */ 2026 static void qedf_simd_int_handler(void *cookie) 2027 { 2028 /* Cookie is qedf_ctx struct */ 2029 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2030 2031 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf); 2032 } 2033 2034 #define QEDF_SIMD_HANDLER_NUM 0 2035 static void qedf_sync_free_irqs(struct qedf_ctx *qedf) 2036 { 2037 int i; 2038 2039 if (qedf->int_info.msix_cnt) { 2040 for (i = 0; i < qedf->int_info.used_cnt; i++) { 2041 synchronize_irq(qedf->int_info.msix[i].vector); 2042 irq_set_affinity_hint(qedf->int_info.msix[i].vector, 2043 NULL); 2044 irq_set_affinity_notifier(qedf->int_info.msix[i].vector, 2045 NULL); 2046 free_irq(qedf->int_info.msix[i].vector, 2047 &qedf->fp_array[i]); 2048 } 2049 } else 2050 qed_ops->common->simd_handler_clean(qedf->cdev, 2051 QEDF_SIMD_HANDLER_NUM); 2052 2053 qedf->int_info.used_cnt = 0; 2054 qed_ops->common->set_fp_int(qedf->cdev, 0); 2055 } 2056 2057 static int qedf_request_msix_irq(struct qedf_ctx *qedf) 2058 { 2059 int i, rc, cpu; 2060 2061 cpu = cpumask_first(cpu_online_mask); 2062 for (i = 0; i < qedf->num_queues; i++) { 2063 rc = request_irq(qedf->int_info.msix[i].vector, 2064 qedf_msix_handler, 0, "qedf", &qedf->fp_array[i]); 2065 2066 if (rc) { 2067 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n"); 2068 qedf_sync_free_irqs(qedf); 2069 return rc; 2070 } 2071 2072 qedf->int_info.used_cnt++; 2073 rc = irq_set_affinity_hint(qedf->int_info.msix[i].vector, 2074 get_cpu_mask(cpu)); 2075 cpu = cpumask_next(cpu, cpu_online_mask); 2076 } 2077 2078 return 0; 2079 } 2080 2081 static int qedf_setup_int(struct qedf_ctx *qedf) 2082 { 2083 int rc = 0; 2084 2085 /* 2086 * Learn interrupt configuration 2087 */ 2088 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus()); 2089 if (rc <= 0) 2090 return 0; 2091 2092 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info); 2093 if (rc) 2094 return 0; 2095 2096 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = " 2097 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt, 2098 num_online_cpus()); 2099 2100 if (qedf->int_info.msix_cnt) 2101 return qedf_request_msix_irq(qedf); 2102 2103 qed_ops->common->simd_handler_config(qedf->cdev, &qedf, 2104 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler); 2105 qedf->int_info.used_cnt = 1; 2106 2107 return 0; 2108 } 2109 2110 /* Main function for libfc frame reception */ 2111 static void qedf_recv_frame(struct qedf_ctx *qedf, 2112 struct sk_buff *skb) 2113 { 2114 u32 fr_len; 2115 struct fc_lport *lport; 2116 struct fc_frame_header *fh; 2117 struct fcoe_crc_eof crc_eof; 2118 struct fc_frame *fp; 2119 u8 *mac = NULL; 2120 u8 *dest_mac = NULL; 2121 struct fcoe_hdr *hp; 2122 struct qedf_rport *fcport; 2123 struct fc_lport *vn_port; 2124 u32 f_ctl; 2125 2126 lport = qedf->lport; 2127 if (lport == NULL || lport->state == LPORT_ST_DISABLED) { 2128 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n"); 2129 kfree_skb(skb); 2130 return; 2131 } 2132 2133 if (skb_is_nonlinear(skb)) 2134 skb_linearize(skb); 2135 mac = eth_hdr(skb)->h_source; 2136 dest_mac = eth_hdr(skb)->h_dest; 2137 2138 /* Pull the header */ 2139 hp = (struct fcoe_hdr *)skb->data; 2140 fh = (struct fc_frame_header *) skb_transport_header(skb); 2141 skb_pull(skb, sizeof(struct fcoe_hdr)); 2142 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 2143 2144 fp = (struct fc_frame *)skb; 2145 fc_frame_init(fp); 2146 fr_dev(fp) = lport; 2147 fr_sof(fp) = hp->fcoe_sof; 2148 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 2149 kfree_skb(skb); 2150 return; 2151 } 2152 fr_eof(fp) = crc_eof.fcoe_eof; 2153 fr_crc(fp) = crc_eof.fcoe_crc32; 2154 if (pskb_trim(skb, fr_len)) { 2155 kfree_skb(skb); 2156 return; 2157 } 2158 2159 fh = fc_frame_header_get(fp); 2160 2161 /* 2162 * Invalid frame filters. 2163 */ 2164 2165 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 2166 fh->fh_type == FC_TYPE_FCP) { 2167 /* Drop FCP data. We dont this in L2 path */ 2168 kfree_skb(skb); 2169 return; 2170 } 2171 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 2172 fh->fh_type == FC_TYPE_ELS) { 2173 switch (fc_frame_payload_op(fp)) { 2174 case ELS_LOGO: 2175 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 2176 /* drop non-FIP LOGO */ 2177 kfree_skb(skb); 2178 return; 2179 } 2180 break; 2181 } 2182 } 2183 2184 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 2185 /* Drop incoming ABTS */ 2186 kfree_skb(skb); 2187 return; 2188 } 2189 2190 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { 2191 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2192 "FC frame d_id mismatch with MAC %pM.\n", dest_mac); 2193 return; 2194 } 2195 2196 if (qedf->ctlr.state) { 2197 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) { 2198 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2199 "Wrong source address: mac:%pM dest_addr:%pM.\n", 2200 mac, qedf->ctlr.dest_addr); 2201 kfree_skb(skb); 2202 return; 2203 } 2204 } 2205 2206 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 2207 2208 /* 2209 * If the destination ID from the frame header does not match what we 2210 * have on record for lport and the search for a NPIV port came up 2211 * empty then this is not addressed to our port so simply drop it. 2212 */ 2213 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { 2214 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2215 "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n", 2216 lport->port_id, ntoh24(fh->fh_d_id)); 2217 kfree_skb(skb); 2218 return; 2219 } 2220 2221 f_ctl = ntoh24(fh->fh_f_ctl); 2222 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) && 2223 (f_ctl & FC_FC_EX_CTX)) { 2224 /* Drop incoming ABTS response that has both SEQ/EX CTX set */ 2225 kfree_skb(skb); 2226 return; 2227 } 2228 2229 /* 2230 * If a connection is uploading, drop incoming FCoE frames as there 2231 * is a small window where we could try to return a frame while libfc 2232 * is trying to clean things up. 2233 */ 2234 2235 /* Get fcport associated with d_id if it exists */ 2236 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 2237 2238 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 2239 &fcport->flags)) { 2240 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2241 "Connection uploading, dropping fp=%p.\n", fp); 2242 kfree_skb(skb); 2243 return; 2244 } 2245 2246 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: " 2247 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp, 2248 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, 2249 fh->fh_type); 2250 if (qedf_dump_frames) 2251 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 2252 1, skb->data, skb->len, false); 2253 fc_exch_recv(lport, fp); 2254 } 2255 2256 static void qedf_ll2_process_skb(struct work_struct *work) 2257 { 2258 struct qedf_skb_work *skb_work = 2259 container_of(work, struct qedf_skb_work, work); 2260 struct qedf_ctx *qedf = skb_work->qedf; 2261 struct sk_buff *skb = skb_work->skb; 2262 struct ethhdr *eh; 2263 2264 if (!qedf) { 2265 QEDF_ERR(NULL, "qedf is NULL\n"); 2266 goto err_out; 2267 } 2268 2269 eh = (struct ethhdr *)skb->data; 2270 2271 /* Undo VLAN encapsulation */ 2272 if (eh->h_proto == htons(ETH_P_8021Q)) { 2273 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); 2274 eh = skb_pull(skb, VLAN_HLEN); 2275 skb_reset_mac_header(skb); 2276 } 2277 2278 /* 2279 * Process either a FIP frame or FCoE frame based on the 2280 * protocol value. If it's not either just drop the 2281 * frame. 2282 */ 2283 if (eh->h_proto == htons(ETH_P_FIP)) { 2284 qedf_fip_recv(qedf, skb); 2285 goto out; 2286 } else if (eh->h_proto == htons(ETH_P_FCOE)) { 2287 __skb_pull(skb, ETH_HLEN); 2288 qedf_recv_frame(qedf, skb); 2289 goto out; 2290 } else 2291 goto err_out; 2292 2293 err_out: 2294 kfree_skb(skb); 2295 out: 2296 kfree(skb_work); 2297 return; 2298 } 2299 2300 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb, 2301 u32 arg1, u32 arg2) 2302 { 2303 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2304 struct qedf_skb_work *skb_work; 2305 2306 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC); 2307 if (!skb_work) { 2308 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so " 2309 "dropping frame.\n"); 2310 kfree_skb(skb); 2311 return 0; 2312 } 2313 2314 INIT_WORK(&skb_work->work, qedf_ll2_process_skb); 2315 skb_work->skb = skb; 2316 skb_work->qedf = qedf; 2317 queue_work(qedf->ll2_recv_wq, &skb_work->work); 2318 2319 return 0; 2320 } 2321 2322 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = { 2323 .rx_cb = qedf_ll2_rx, 2324 .tx_cb = NULL, 2325 }; 2326 2327 /* Main thread to process I/O completions */ 2328 void qedf_fp_io_handler(struct work_struct *work) 2329 { 2330 struct qedf_io_work *io_work = 2331 container_of(work, struct qedf_io_work, work); 2332 u32 comp_type; 2333 2334 /* 2335 * Deferred part of unsolicited CQE sends 2336 * frame to libfc. 2337 */ 2338 comp_type = (io_work->cqe.cqe_data >> 2339 FCOE_CQE_CQE_TYPE_SHIFT) & 2340 FCOE_CQE_CQE_TYPE_MASK; 2341 if (comp_type == FCOE_UNSOLIC_CQE_TYPE && 2342 io_work->fp) 2343 fc_exch_recv(io_work->qedf->lport, io_work->fp); 2344 else 2345 qedf_process_cqe(io_work->qedf, &io_work->cqe); 2346 2347 kfree(io_work); 2348 } 2349 2350 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf, 2351 struct qed_sb_info *sb_info, u16 sb_id) 2352 { 2353 struct status_block_e4 *sb_virt; 2354 dma_addr_t sb_phys; 2355 int ret; 2356 2357 sb_virt = dma_alloc_coherent(&qedf->pdev->dev, 2358 sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL); 2359 2360 if (!sb_virt) { 2361 QEDF_ERR(&(qedf->dbg_ctx), "Status block allocation failed " 2362 "for id = %d.\n", sb_id); 2363 return -ENOMEM; 2364 } 2365 2366 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys, 2367 sb_id, QED_SB_TYPE_STORAGE); 2368 2369 if (ret) { 2370 QEDF_ERR(&(qedf->dbg_ctx), "Status block initialization " 2371 "failed for id = %d.\n", sb_id); 2372 return ret; 2373 } 2374 2375 return 0; 2376 } 2377 2378 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info) 2379 { 2380 if (sb_info->sb_virt) 2381 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt), 2382 (void *)sb_info->sb_virt, sb_info->sb_phys); 2383 } 2384 2385 static void qedf_destroy_sb(struct qedf_ctx *qedf) 2386 { 2387 int id; 2388 struct qedf_fastpath *fp = NULL; 2389 2390 for (id = 0; id < qedf->num_queues; id++) { 2391 fp = &(qedf->fp_array[id]); 2392 if (fp->sb_id == QEDF_SB_ID_NULL) 2393 break; 2394 qedf_free_sb(qedf, fp->sb_info); 2395 kfree(fp->sb_info); 2396 } 2397 kfree(qedf->fp_array); 2398 } 2399 2400 static int qedf_prepare_sb(struct qedf_ctx *qedf) 2401 { 2402 int id; 2403 struct qedf_fastpath *fp; 2404 int ret; 2405 2406 qedf->fp_array = 2407 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath), 2408 GFP_KERNEL); 2409 2410 if (!qedf->fp_array) { 2411 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation " 2412 "failed.\n"); 2413 return -ENOMEM; 2414 } 2415 2416 for (id = 0; id < qedf->num_queues; id++) { 2417 fp = &(qedf->fp_array[id]); 2418 fp->sb_id = QEDF_SB_ID_NULL; 2419 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL); 2420 if (!fp->sb_info) { 2421 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct " 2422 "allocation failed.\n"); 2423 goto err; 2424 } 2425 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id); 2426 if (ret) { 2427 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and " 2428 "initialization failed.\n"); 2429 goto err; 2430 } 2431 fp->sb_id = id; 2432 fp->qedf = qedf; 2433 fp->cq_num_entries = 2434 qedf->global_queues[id]->cq_mem_size / 2435 sizeof(struct fcoe_cqe); 2436 } 2437 err: 2438 return 0; 2439 } 2440 2441 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe) 2442 { 2443 u16 xid; 2444 struct qedf_ioreq *io_req; 2445 struct qedf_rport *fcport; 2446 u32 comp_type; 2447 2448 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2449 FCOE_CQE_CQE_TYPE_MASK; 2450 2451 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2452 io_req = &qedf->cmd_mgr->cmds[xid]; 2453 2454 /* Completion not for a valid I/O anymore so just return */ 2455 if (!io_req) 2456 return; 2457 2458 fcport = io_req->fcport; 2459 2460 if (fcport == NULL) { 2461 QEDF_ERR(&(qedf->dbg_ctx), "fcport is NULL.\n"); 2462 return; 2463 } 2464 2465 /* 2466 * Check that fcport is offloaded. If it isn't then the spinlock 2467 * isn't valid and shouldn't be taken. We should just return. 2468 */ 2469 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 2470 QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n"); 2471 return; 2472 } 2473 2474 2475 switch (comp_type) { 2476 case FCOE_GOOD_COMPLETION_CQE_TYPE: 2477 atomic_inc(&fcport->free_sqes); 2478 switch (io_req->cmd_type) { 2479 case QEDF_SCSI_CMD: 2480 qedf_scsi_completion(qedf, cqe, io_req); 2481 break; 2482 case QEDF_ELS: 2483 qedf_process_els_compl(qedf, cqe, io_req); 2484 break; 2485 case QEDF_TASK_MGMT_CMD: 2486 qedf_process_tmf_compl(qedf, cqe, io_req); 2487 break; 2488 case QEDF_SEQ_CLEANUP: 2489 qedf_process_seq_cleanup_compl(qedf, cqe, io_req); 2490 break; 2491 } 2492 break; 2493 case FCOE_ERROR_DETECTION_CQE_TYPE: 2494 atomic_inc(&fcport->free_sqes); 2495 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2496 "Error detect CQE.\n"); 2497 qedf_process_error_detect(qedf, cqe, io_req); 2498 break; 2499 case FCOE_EXCH_CLEANUP_CQE_TYPE: 2500 atomic_inc(&fcport->free_sqes); 2501 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2502 "Cleanup CQE.\n"); 2503 qedf_process_cleanup_compl(qedf, cqe, io_req); 2504 break; 2505 case FCOE_ABTS_CQE_TYPE: 2506 atomic_inc(&fcport->free_sqes); 2507 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2508 "Abort CQE.\n"); 2509 qedf_process_abts_compl(qedf, cqe, io_req); 2510 break; 2511 case FCOE_DUMMY_CQE_TYPE: 2512 atomic_inc(&fcport->free_sqes); 2513 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2514 "Dummy CQE.\n"); 2515 break; 2516 case FCOE_LOCAL_COMP_CQE_TYPE: 2517 atomic_inc(&fcport->free_sqes); 2518 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2519 "Local completion CQE.\n"); 2520 break; 2521 case FCOE_WARNING_CQE_TYPE: 2522 atomic_inc(&fcport->free_sqes); 2523 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2524 "Warning CQE.\n"); 2525 qedf_process_warning_compl(qedf, cqe, io_req); 2526 break; 2527 case MAX_FCOE_CQE_TYPE: 2528 atomic_inc(&fcport->free_sqes); 2529 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2530 "Max FCoE CQE.\n"); 2531 break; 2532 default: 2533 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2534 "Default CQE.\n"); 2535 break; 2536 } 2537 } 2538 2539 static void qedf_free_bdq(struct qedf_ctx *qedf) 2540 { 2541 int i; 2542 2543 if (qedf->bdq_pbl_list) 2544 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE, 2545 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma); 2546 2547 if (qedf->bdq_pbl) 2548 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size, 2549 qedf->bdq_pbl, qedf->bdq_pbl_dma); 2550 2551 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2552 if (qedf->bdq[i].buf_addr) { 2553 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE, 2554 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma); 2555 } 2556 } 2557 } 2558 2559 static void qedf_free_global_queues(struct qedf_ctx *qedf) 2560 { 2561 int i; 2562 struct global_queue **gl = qedf->global_queues; 2563 2564 for (i = 0; i < qedf->num_queues; i++) { 2565 if (!gl[i]) 2566 continue; 2567 2568 if (gl[i]->cq) 2569 dma_free_coherent(&qedf->pdev->dev, 2570 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma); 2571 if (gl[i]->cq_pbl) 2572 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size, 2573 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 2574 2575 kfree(gl[i]); 2576 } 2577 2578 qedf_free_bdq(qedf); 2579 } 2580 2581 static int qedf_alloc_bdq(struct qedf_ctx *qedf) 2582 { 2583 int i; 2584 struct scsi_bd *pbl; 2585 u64 *list; 2586 dma_addr_t page; 2587 2588 /* Alloc dma memory for BDQ buffers */ 2589 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2590 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev, 2591 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL); 2592 if (!qedf->bdq[i].buf_addr) { 2593 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ " 2594 "buffer %d.\n", i); 2595 return -ENOMEM; 2596 } 2597 } 2598 2599 /* Alloc dma memory for BDQ page buffer list */ 2600 qedf->bdq_pbl_mem_size = 2601 QEDF_BDQ_SIZE * sizeof(struct scsi_bd); 2602 qedf->bdq_pbl_mem_size = 2603 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE); 2604 2605 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 2606 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL); 2607 if (!qedf->bdq_pbl) { 2608 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n"); 2609 return -ENOMEM; 2610 } 2611 2612 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2613 "BDQ PBL addr=0x%p dma=%pad\n", 2614 qedf->bdq_pbl, &qedf->bdq_pbl_dma); 2615 2616 /* 2617 * Populate BDQ PBL with physical and virtual address of individual 2618 * BDQ buffers 2619 */ 2620 pbl = (struct scsi_bd *)qedf->bdq_pbl; 2621 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2622 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma)); 2623 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma)); 2624 pbl->opaque.fcoe_opaque.hi = 0; 2625 /* Opaque lo data is an index into the BDQ array */ 2626 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i); 2627 pbl++; 2628 } 2629 2630 /* Allocate list of PBL pages */ 2631 qedf->bdq_pbl_list = dma_zalloc_coherent(&qedf->pdev->dev, 2632 QEDF_PAGE_SIZE, &qedf->bdq_pbl_list_dma, GFP_KERNEL); 2633 if (!qedf->bdq_pbl_list) { 2634 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n"); 2635 return -ENOMEM; 2636 } 2637 2638 /* 2639 * Now populate PBL list with pages that contain pointers to the 2640 * individual buffers. 2641 */ 2642 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size / 2643 QEDF_PAGE_SIZE; 2644 list = (u64 *)qedf->bdq_pbl_list; 2645 page = qedf->bdq_pbl_list_dma; 2646 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) { 2647 *list = qedf->bdq_pbl_dma; 2648 list++; 2649 page += QEDF_PAGE_SIZE; 2650 } 2651 2652 return 0; 2653 } 2654 2655 static int qedf_alloc_global_queues(struct qedf_ctx *qedf) 2656 { 2657 u32 *list; 2658 int i; 2659 int status = 0, rc; 2660 u32 *pbl; 2661 dma_addr_t page; 2662 int num_pages; 2663 2664 /* Allocate and map CQs, RQs */ 2665 /* 2666 * Number of global queues (CQ / RQ). This should 2667 * be <= number of available MSIX vectors for the PF 2668 */ 2669 if (!qedf->num_queues) { 2670 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n"); 2671 return 1; 2672 } 2673 2674 /* 2675 * Make sure we allocated the PBL that will contain the physical 2676 * addresses of our queues 2677 */ 2678 if (!qedf->p_cpuq) { 2679 status = 1; 2680 goto mem_alloc_failure; 2681 } 2682 2683 qedf->global_queues = kzalloc((sizeof(struct global_queue *) 2684 * qedf->num_queues), GFP_KERNEL); 2685 if (!qedf->global_queues) { 2686 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global " 2687 "queues array ptr memory\n"); 2688 return -ENOMEM; 2689 } 2690 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2691 "qedf->global_queues=%p.\n", qedf->global_queues); 2692 2693 /* Allocate DMA coherent buffers for BDQ */ 2694 rc = qedf_alloc_bdq(qedf); 2695 if (rc) 2696 goto mem_alloc_failure; 2697 2698 /* Allocate a CQ and an associated PBL for each MSI-X vector */ 2699 for (i = 0; i < qedf->num_queues; i++) { 2700 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue), 2701 GFP_KERNEL); 2702 if (!qedf->global_queues[i]) { 2703 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate " 2704 "global queue %d.\n", i); 2705 status = -ENOMEM; 2706 goto mem_alloc_failure; 2707 } 2708 2709 qedf->global_queues[i]->cq_mem_size = 2710 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 2711 qedf->global_queues[i]->cq_mem_size = 2712 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE); 2713 2714 qedf->global_queues[i]->cq_pbl_size = 2715 (qedf->global_queues[i]->cq_mem_size / 2716 PAGE_SIZE) * sizeof(void *); 2717 qedf->global_queues[i]->cq_pbl_size = 2718 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE); 2719 2720 qedf->global_queues[i]->cq = 2721 dma_zalloc_coherent(&qedf->pdev->dev, 2722 qedf->global_queues[i]->cq_mem_size, 2723 &qedf->global_queues[i]->cq_dma, GFP_KERNEL); 2724 2725 if (!qedf->global_queues[i]->cq) { 2726 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n"); 2727 status = -ENOMEM; 2728 goto mem_alloc_failure; 2729 } 2730 2731 qedf->global_queues[i]->cq_pbl = 2732 dma_zalloc_coherent(&qedf->pdev->dev, 2733 qedf->global_queues[i]->cq_pbl_size, 2734 &qedf->global_queues[i]->cq_pbl_dma, GFP_KERNEL); 2735 2736 if (!qedf->global_queues[i]->cq_pbl) { 2737 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n"); 2738 status = -ENOMEM; 2739 goto mem_alloc_failure; 2740 } 2741 2742 /* Create PBL */ 2743 num_pages = qedf->global_queues[i]->cq_mem_size / 2744 QEDF_PAGE_SIZE; 2745 page = qedf->global_queues[i]->cq_dma; 2746 pbl = (u32 *)qedf->global_queues[i]->cq_pbl; 2747 2748 while (num_pages--) { 2749 *pbl = U64_LO(page); 2750 pbl++; 2751 *pbl = U64_HI(page); 2752 pbl++; 2753 page += QEDF_PAGE_SIZE; 2754 } 2755 /* Set the initial consumer index for cq */ 2756 qedf->global_queues[i]->cq_cons_idx = 0; 2757 } 2758 2759 list = (u32 *)qedf->p_cpuq; 2760 2761 /* 2762 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 2763 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 2764 * to the physical address which contains an array of pointers to 2765 * the physical addresses of the specific queue pages. 2766 */ 2767 for (i = 0; i < qedf->num_queues; i++) { 2768 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma); 2769 list++; 2770 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma); 2771 list++; 2772 *list = U64_LO(0); 2773 list++; 2774 *list = U64_HI(0); 2775 list++; 2776 } 2777 2778 return 0; 2779 2780 mem_alloc_failure: 2781 qedf_free_global_queues(qedf); 2782 return status; 2783 } 2784 2785 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf) 2786 { 2787 u8 sq_num_pbl_pages; 2788 u32 sq_mem_size; 2789 u32 cq_mem_size; 2790 u32 cq_num_entries; 2791 int rval; 2792 2793 /* 2794 * The number of completion queues/fastpath interrupts/status blocks 2795 * we allocation is the minimum off: 2796 * 2797 * Number of CPUs 2798 * Number allocated by qed for our PCI function 2799 */ 2800 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf); 2801 2802 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n", 2803 qedf->num_queues); 2804 2805 qedf->p_cpuq = pci_alloc_consistent(qedf->pdev, 2806 qedf->num_queues * sizeof(struct qedf_glbl_q_params), 2807 &qedf->hw_p_cpuq); 2808 2809 if (!qedf->p_cpuq) { 2810 QEDF_ERR(&(qedf->dbg_ctx), "pci_alloc_consistent failed.\n"); 2811 return 1; 2812 } 2813 2814 rval = qedf_alloc_global_queues(qedf); 2815 if (rval) { 2816 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation " 2817 "failed.\n"); 2818 return 1; 2819 } 2820 2821 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */ 2822 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 2823 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE); 2824 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE); 2825 2826 /* Calculate CQ num entries */ 2827 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 2828 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE); 2829 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe); 2830 2831 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params)); 2832 2833 /* Setup the value for fcoe PF */ 2834 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS; 2835 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS; 2836 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr = 2837 (u64)qedf->hw_p_cpuq; 2838 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages; 2839 2840 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0; 2841 2842 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries; 2843 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues; 2844 2845 /* log_page_size: 12 for 4KB pages */ 2846 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE); 2847 2848 qedf->pf_params.fcoe_pf_params.mtu = 9000; 2849 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI; 2850 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI; 2851 2852 /* BDQ address and size */ 2853 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] = 2854 qedf->bdq_pbl_list_dma; 2855 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] = 2856 qedf->bdq_pbl_list_num_entries; 2857 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE; 2858 2859 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2860 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n", 2861 qedf->bdq_pbl_list, 2862 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0], 2863 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]); 2864 2865 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2866 "cq_num_entries=%d.\n", 2867 qedf->pf_params.fcoe_pf_params.cq_num_entries); 2868 2869 return 0; 2870 } 2871 2872 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 2873 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf) 2874 { 2875 size_t size = 0; 2876 2877 if (qedf->p_cpuq) { 2878 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params); 2879 pci_free_consistent(qedf->pdev, size, qedf->p_cpuq, 2880 qedf->hw_p_cpuq); 2881 } 2882 2883 qedf_free_global_queues(qedf); 2884 2885 if (qedf->global_queues) 2886 kfree(qedf->global_queues); 2887 } 2888 2889 /* 2890 * PCI driver functions 2891 */ 2892 2893 static const struct pci_device_id qedf_pci_tbl[] = { 2894 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) }, 2895 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) }, 2896 {0} 2897 }; 2898 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl); 2899 2900 static struct pci_driver qedf_pci_driver = { 2901 .name = QEDF_MODULE_NAME, 2902 .id_table = qedf_pci_tbl, 2903 .probe = qedf_probe, 2904 .remove = qedf_remove, 2905 }; 2906 2907 static int __qedf_probe(struct pci_dev *pdev, int mode) 2908 { 2909 int rc = -EINVAL; 2910 struct fc_lport *lport; 2911 struct qedf_ctx *qedf; 2912 struct Scsi_Host *host; 2913 bool is_vf = false; 2914 struct qed_ll2_params params; 2915 char host_buf[20]; 2916 struct qed_link_params link_params; 2917 int status; 2918 void *task_start, *task_end; 2919 struct qed_slowpath_params slowpath_params; 2920 struct qed_probe_params qed_params; 2921 u16 tmp; 2922 2923 /* 2924 * When doing error recovery we didn't reap the lport so don't try 2925 * to reallocate it. 2926 */ 2927 if (mode != QEDF_MODE_RECOVERY) { 2928 lport = libfc_host_alloc(&qedf_host_template, 2929 sizeof(struct qedf_ctx)); 2930 2931 if (!lport) { 2932 QEDF_ERR(NULL, "Could not allocate lport.\n"); 2933 rc = -ENOMEM; 2934 goto err0; 2935 } 2936 2937 /* Initialize qedf_ctx */ 2938 qedf = lport_priv(lport); 2939 qedf->lport = lport; 2940 qedf->ctlr.lp = lport; 2941 qedf->pdev = pdev; 2942 qedf->dbg_ctx.pdev = pdev; 2943 qedf->dbg_ctx.host_no = lport->host->host_no; 2944 spin_lock_init(&qedf->hba_lock); 2945 INIT_LIST_HEAD(&qedf->fcports); 2946 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1; 2947 atomic_set(&qedf->num_offloads, 0); 2948 qedf->stop_io_on_error = false; 2949 pci_set_drvdata(pdev, qedf); 2950 init_completion(&qedf->fipvlan_compl); 2951 2952 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, 2953 "QLogic FastLinQ FCoE Module qedf %s, " 2954 "FW %d.%d.%d.%d\n", QEDF_VERSION, 2955 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 2956 FW_ENGINEERING_VERSION); 2957 } else { 2958 /* Init pointers during recovery */ 2959 qedf = pci_get_drvdata(pdev); 2960 lport = qedf->lport; 2961 } 2962 2963 host = lport->host; 2964 2965 /* Allocate mempool for qedf_io_work structs */ 2966 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN, 2967 qedf_io_work_cache); 2968 if (qedf->io_mempool == NULL) { 2969 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n"); 2970 goto err1; 2971 } 2972 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n", 2973 qedf->io_mempool); 2974 2975 sprintf(host_buf, "qedf_%u_link", 2976 qedf->lport->host->host_no); 2977 qedf->link_update_wq = create_workqueue(host_buf); 2978 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update); 2979 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery); 2980 2981 qedf->fipvlan_retries = qedf_fipvlan_retries; 2982 2983 /* 2984 * Common probe. Takes care of basic hardware init and pci_* 2985 * functions. 2986 */ 2987 memset(&qed_params, 0, sizeof(qed_params)); 2988 qed_params.protocol = QED_PROTOCOL_FCOE; 2989 qed_params.dp_module = qedf_dp_module; 2990 qed_params.dp_level = qedf_dp_level; 2991 qed_params.is_vf = is_vf; 2992 qedf->cdev = qed_ops->common->probe(pdev, &qed_params); 2993 if (!qedf->cdev) { 2994 rc = -ENODEV; 2995 goto err1; 2996 } 2997 2998 /* Learn information crucial for qedf to progress */ 2999 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3000 if (rc) { 3001 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n"); 3002 goto err1; 3003 } 3004 3005 /* queue allocation code should come here 3006 * order should be 3007 * slowpath_start 3008 * status block allocation 3009 * interrupt registration (to get min number of queues) 3010 * set_fcoe_pf_param 3011 * qed_sp_fcoe_func_start 3012 */ 3013 rc = qedf_set_fcoe_pf_param(qedf); 3014 if (rc) { 3015 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n"); 3016 goto err2; 3017 } 3018 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3019 3020 /* Record BDQ producer doorbell addresses */ 3021 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr; 3022 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr; 3023 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3024 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod, 3025 qedf->bdq_secondary_prod); 3026 3027 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf); 3028 3029 rc = qedf_prepare_sb(qedf); 3030 if (rc) { 3031 3032 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3033 goto err2; 3034 } 3035 3036 /* Start the Slowpath-process */ 3037 slowpath_params.int_mode = QED_INT_MODE_MSIX; 3038 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER; 3039 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER; 3040 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER; 3041 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER; 3042 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE); 3043 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params); 3044 if (rc) { 3045 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3046 goto err2; 3047 } 3048 3049 /* 3050 * update_pf_params needs to be called before and after slowpath 3051 * start 3052 */ 3053 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3054 3055 /* Setup interrupts */ 3056 rc = qedf_setup_int(qedf); 3057 if (rc) 3058 goto err3; 3059 3060 rc = qed_ops->start(qedf->cdev, &qedf->tasks); 3061 if (rc) { 3062 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n"); 3063 goto err4; 3064 } 3065 task_start = qedf_get_task_mem(&qedf->tasks, 0); 3066 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1); 3067 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, " 3068 "end=%p block_size=%u.\n", task_start, task_end, 3069 qedf->tasks.size); 3070 3071 /* 3072 * We need to write the number of BDs in the BDQ we've preallocated so 3073 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 3074 * packet arrives. 3075 */ 3076 qedf->bdq_prod_idx = QEDF_BDQ_SIZE; 3077 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3078 "Writing %d to primary and secondary BDQ doorbell registers.\n", 3079 qedf->bdq_prod_idx); 3080 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod); 3081 tmp = readw(qedf->bdq_primary_prod); 3082 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod); 3083 tmp = readw(qedf->bdq_secondary_prod); 3084 3085 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3086 3087 /* Now that the dev_info struct has been filled in set the MAC 3088 * address 3089 */ 3090 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac); 3091 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n", 3092 qedf->mac); 3093 3094 /* 3095 * Set the WWNN and WWPN in the following way: 3096 * 3097 * If the info we get from qed is non-zero then use that to set the 3098 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based 3099 * on the MAC address. 3100 */ 3101 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) { 3102 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3103 "Setting WWPN and WWNN from qed dev_info.\n"); 3104 qedf->wwnn = qedf->dev_info.wwnn; 3105 qedf->wwpn = qedf->dev_info.wwpn; 3106 } else { 3107 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3108 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n"); 3109 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0); 3110 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0); 3111 } 3112 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx " 3113 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn); 3114 3115 sprintf(host_buf, "host_%d", host->host_no); 3116 qed_ops->common->set_name(qedf->cdev, host_buf); 3117 3118 3119 /* Set xid max values */ 3120 qedf->max_scsi_xid = QEDF_MAX_SCSI_XID; 3121 qedf->max_els_xid = QEDF_MAX_ELS_XID; 3122 3123 /* Allocate cmd mgr */ 3124 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf); 3125 if (!qedf->cmd_mgr) { 3126 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n"); 3127 rc = -ENOMEM; 3128 goto err5; 3129 } 3130 3131 if (mode != QEDF_MODE_RECOVERY) { 3132 host->transportt = qedf_fc_transport_template; 3133 host->can_queue = QEDF_MAX_ELS_XID; 3134 host->max_lun = qedf_max_lun; 3135 host->max_cmd_len = QEDF_MAX_CDB_LEN; 3136 rc = scsi_add_host(host, &pdev->dev); 3137 if (rc) 3138 goto err6; 3139 } 3140 3141 memset(¶ms, 0, sizeof(params)); 3142 params.mtu = 9000; 3143 ether_addr_copy(params.ll2_mac_address, qedf->mac); 3144 3145 /* Start LL2 processing thread */ 3146 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no); 3147 qedf->ll2_recv_wq = 3148 create_workqueue(host_buf); 3149 if (!qedf->ll2_recv_wq) { 3150 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n"); 3151 rc = -ENOMEM; 3152 goto err7; 3153 } 3154 3155 #ifdef CONFIG_DEBUG_FS 3156 qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops, 3157 qedf_dbg_fops); 3158 #endif 3159 3160 /* Start LL2 */ 3161 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf); 3162 rc = qed_ops->ll2->start(qedf->cdev, ¶ms); 3163 if (rc) { 3164 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n"); 3165 goto err7; 3166 } 3167 set_bit(QEDF_LL2_STARTED, &qedf->flags); 3168 3169 /* Set initial FIP/FCoE VLAN to NULL */ 3170 qedf->vlan_id = 0; 3171 3172 /* 3173 * No need to setup fcoe_ctlr or fc_lport objects during recovery since 3174 * they were not reaped during the unload process. 3175 */ 3176 if (mode != QEDF_MODE_RECOVERY) { 3177 /* Setup imbedded fcoe controller */ 3178 qedf_fcoe_ctlr_setup(qedf); 3179 3180 /* Setup lport */ 3181 rc = qedf_lport_setup(qedf); 3182 if (rc) { 3183 QEDF_ERR(&(qedf->dbg_ctx), 3184 "qedf_lport_setup failed.\n"); 3185 goto err7; 3186 } 3187 } 3188 3189 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no); 3190 qedf->timer_work_queue = 3191 create_workqueue(host_buf); 3192 if (!qedf->timer_work_queue) { 3193 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer " 3194 "workqueue.\n"); 3195 rc = -ENOMEM; 3196 goto err7; 3197 } 3198 3199 /* DPC workqueue is not reaped during recovery unload */ 3200 if (mode != QEDF_MODE_RECOVERY) { 3201 sprintf(host_buf, "qedf_%u_dpc", 3202 qedf->lport->host->host_no); 3203 qedf->dpc_wq = create_workqueue(host_buf); 3204 } 3205 3206 /* 3207 * GRC dump and sysfs parameters are not reaped during the recovery 3208 * unload process. 3209 */ 3210 if (mode != QEDF_MODE_RECOVERY) { 3211 qedf->grcdump_size = qed_ops->common->dbg_grc_size(qedf->cdev); 3212 if (qedf->grcdump_size) { 3213 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump, 3214 qedf->grcdump_size); 3215 if (rc) { 3216 QEDF_ERR(&(qedf->dbg_ctx), 3217 "GRC Dump buffer alloc failed.\n"); 3218 qedf->grcdump = NULL; 3219 } 3220 3221 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3222 "grcdump: addr=%p, size=%u.\n", 3223 qedf->grcdump, qedf->grcdump_size); 3224 } 3225 qedf_create_sysfs_ctx_attr(qedf); 3226 3227 /* Initialize I/O tracing for this adapter */ 3228 spin_lock_init(&qedf->io_trace_lock); 3229 qedf->io_trace_idx = 0; 3230 } 3231 3232 init_completion(&qedf->flogi_compl); 3233 3234 memset(&link_params, 0, sizeof(struct qed_link_params)); 3235 link_params.link_up = true; 3236 status = qed_ops->common->set_link(qedf->cdev, &link_params); 3237 if (status) 3238 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n"); 3239 3240 /* Start/restart discovery */ 3241 if (mode == QEDF_MODE_RECOVERY) 3242 fcoe_ctlr_link_up(&qedf->ctlr); 3243 else 3244 fc_fabric_login(lport); 3245 3246 /* All good */ 3247 return 0; 3248 3249 err7: 3250 if (qedf->ll2_recv_wq) 3251 destroy_workqueue(qedf->ll2_recv_wq); 3252 fc_remove_host(qedf->lport->host); 3253 scsi_remove_host(qedf->lport->host); 3254 #ifdef CONFIG_DEBUG_FS 3255 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3256 #endif 3257 err6: 3258 qedf_cmd_mgr_free(qedf->cmd_mgr); 3259 err5: 3260 qed_ops->stop(qedf->cdev); 3261 err4: 3262 qedf_free_fcoe_pf_param(qedf); 3263 qedf_sync_free_irqs(qedf); 3264 err3: 3265 qed_ops->common->slowpath_stop(qedf->cdev); 3266 err2: 3267 qed_ops->common->remove(qedf->cdev); 3268 err1: 3269 scsi_host_put(lport->host); 3270 err0: 3271 return rc; 3272 } 3273 3274 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id) 3275 { 3276 return __qedf_probe(pdev, QEDF_MODE_NORMAL); 3277 } 3278 3279 static void __qedf_remove(struct pci_dev *pdev, int mode) 3280 { 3281 struct qedf_ctx *qedf; 3282 3283 if (!pdev) { 3284 QEDF_ERR(NULL, "pdev is NULL.\n"); 3285 return; 3286 } 3287 3288 qedf = pci_get_drvdata(pdev); 3289 3290 /* 3291 * Prevent race where we're in board disable work and then try to 3292 * rmmod the module. 3293 */ 3294 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 3295 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n"); 3296 return; 3297 } 3298 3299 if (mode != QEDF_MODE_RECOVERY) 3300 set_bit(QEDF_UNLOADING, &qedf->flags); 3301 3302 /* Logoff the fabric to upload all connections */ 3303 if (mode == QEDF_MODE_RECOVERY) 3304 fcoe_ctlr_link_down(&qedf->ctlr); 3305 else 3306 fc_fabric_logoff(qedf->lport); 3307 qedf_wait_for_upload(qedf); 3308 3309 #ifdef CONFIG_DEBUG_FS 3310 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3311 #endif 3312 3313 /* Stop any link update handling */ 3314 cancel_delayed_work_sync(&qedf->link_update); 3315 destroy_workqueue(qedf->link_update_wq); 3316 qedf->link_update_wq = NULL; 3317 3318 if (qedf->timer_work_queue) 3319 destroy_workqueue(qedf->timer_work_queue); 3320 3321 /* Stop Light L2 */ 3322 clear_bit(QEDF_LL2_STARTED, &qedf->flags); 3323 qed_ops->ll2->stop(qedf->cdev); 3324 if (qedf->ll2_recv_wq) 3325 destroy_workqueue(qedf->ll2_recv_wq); 3326 3327 /* Stop fastpath */ 3328 qedf_sync_free_irqs(qedf); 3329 qedf_destroy_sb(qedf); 3330 3331 /* 3332 * During recovery don't destroy OS constructs that represent the 3333 * physical port. 3334 */ 3335 if (mode != QEDF_MODE_RECOVERY) { 3336 qedf_free_grc_dump_buf(&qedf->grcdump); 3337 qedf_remove_sysfs_ctx_attr(qedf); 3338 3339 /* Remove all SCSI/libfc/libfcoe structures */ 3340 fcoe_ctlr_destroy(&qedf->ctlr); 3341 fc_lport_destroy(qedf->lport); 3342 fc_remove_host(qedf->lport->host); 3343 scsi_remove_host(qedf->lport->host); 3344 } 3345 3346 qedf_cmd_mgr_free(qedf->cmd_mgr); 3347 3348 if (mode != QEDF_MODE_RECOVERY) { 3349 fc_exch_mgr_free(qedf->lport); 3350 fc_lport_free_stats(qedf->lport); 3351 3352 /* Wait for all vports to be reaped */ 3353 qedf_wait_for_vport_destroy(qedf); 3354 } 3355 3356 /* 3357 * Now that all connections have been uploaded we can stop the 3358 * rest of the qed operations 3359 */ 3360 qed_ops->stop(qedf->cdev); 3361 3362 if (mode != QEDF_MODE_RECOVERY) { 3363 if (qedf->dpc_wq) { 3364 /* Stop general DPC handling */ 3365 destroy_workqueue(qedf->dpc_wq); 3366 qedf->dpc_wq = NULL; 3367 } 3368 } 3369 3370 /* Final shutdown for the board */ 3371 qedf_free_fcoe_pf_param(qedf); 3372 if (mode != QEDF_MODE_RECOVERY) { 3373 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3374 pci_set_drvdata(pdev, NULL); 3375 } 3376 qed_ops->common->slowpath_stop(qedf->cdev); 3377 qed_ops->common->remove(qedf->cdev); 3378 3379 mempool_destroy(qedf->io_mempool); 3380 3381 /* Only reap the Scsi_host on a real removal */ 3382 if (mode != QEDF_MODE_RECOVERY) 3383 scsi_host_put(qedf->lport->host); 3384 } 3385 3386 static void qedf_remove(struct pci_dev *pdev) 3387 { 3388 /* Check to make sure this function wasn't already disabled */ 3389 if (!atomic_read(&pdev->enable_cnt)) 3390 return; 3391 3392 __qedf_remove(pdev, QEDF_MODE_NORMAL); 3393 } 3394 3395 /* 3396 * Module Init/Remove 3397 */ 3398 3399 static int __init qedf_init(void) 3400 { 3401 int ret; 3402 3403 /* If debug=1 passed, set the default log mask */ 3404 if (qedf_debug == QEDF_LOG_DEFAULT) 3405 qedf_debug = QEDF_DEFAULT_LOG_MASK; 3406 3407 /* Print driver banner */ 3408 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR, 3409 QEDF_VERSION); 3410 3411 /* Create kmem_cache for qedf_io_work structs */ 3412 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache", 3413 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL); 3414 if (qedf_io_work_cache == NULL) { 3415 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n"); 3416 goto err1; 3417 } 3418 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n", 3419 qedf_io_work_cache); 3420 3421 qed_ops = qed_get_fcoe_ops(); 3422 if (!qed_ops) { 3423 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n"); 3424 goto err1; 3425 } 3426 3427 #ifdef CONFIG_DEBUG_FS 3428 qedf_dbg_init("qedf"); 3429 #endif 3430 3431 qedf_fc_transport_template = 3432 fc_attach_transport(&qedf_fc_transport_fn); 3433 if (!qedf_fc_transport_template) { 3434 QEDF_ERR(NULL, "Could not register with FC transport\n"); 3435 goto err2; 3436 } 3437 3438 qedf_fc_vport_transport_template = 3439 fc_attach_transport(&qedf_fc_vport_transport_fn); 3440 if (!qedf_fc_vport_transport_template) { 3441 QEDF_ERR(NULL, "Could not register vport template with FC " 3442 "transport\n"); 3443 goto err3; 3444 } 3445 3446 qedf_io_wq = create_workqueue("qedf_io_wq"); 3447 if (!qedf_io_wq) { 3448 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n"); 3449 goto err4; 3450 } 3451 3452 qedf_cb_ops.get_login_failures = qedf_get_login_failures; 3453 3454 ret = pci_register_driver(&qedf_pci_driver); 3455 if (ret) { 3456 QEDF_ERR(NULL, "Failed to register driver\n"); 3457 goto err5; 3458 } 3459 3460 return 0; 3461 3462 err5: 3463 destroy_workqueue(qedf_io_wq); 3464 err4: 3465 fc_release_transport(qedf_fc_vport_transport_template); 3466 err3: 3467 fc_release_transport(qedf_fc_transport_template); 3468 err2: 3469 #ifdef CONFIG_DEBUG_FS 3470 qedf_dbg_exit(); 3471 #endif 3472 qed_put_fcoe_ops(); 3473 err1: 3474 return -EINVAL; 3475 } 3476 3477 static void __exit qedf_cleanup(void) 3478 { 3479 pci_unregister_driver(&qedf_pci_driver); 3480 3481 destroy_workqueue(qedf_io_wq); 3482 3483 fc_release_transport(qedf_fc_vport_transport_template); 3484 fc_release_transport(qedf_fc_transport_template); 3485 #ifdef CONFIG_DEBUG_FS 3486 qedf_dbg_exit(); 3487 #endif 3488 qed_put_fcoe_ops(); 3489 3490 kmem_cache_destroy(qedf_io_work_cache); 3491 } 3492 3493 MODULE_LICENSE("GPL"); 3494 MODULE_DESCRIPTION("QLogic QEDF 25/40/50/100Gb FCoE Driver"); 3495 MODULE_AUTHOR("QLogic Corporation"); 3496 MODULE_VERSION(QEDF_VERSION); 3497 module_init(qedf_init); 3498 module_exit(qedf_cleanup); 3499