1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * QLogic FCoE Offload Driver 4 * Copyright (c) 2016-2018 Cavium Inc. 5 */ 6 #include <linux/init.h> 7 #include <linux/kernel.h> 8 #include <linux/module.h> 9 #include <linux/pci.h> 10 #include <linux/device.h> 11 #include <linux/highmem.h> 12 #include <linux/crc32.h> 13 #include <linux/interrupt.h> 14 #include <linux/list.h> 15 #include <linux/kthread.h> 16 #include <scsi/libfc.h> 17 #include <scsi/scsi_host.h> 18 #include <scsi/fc_frame.h> 19 #include <linux/if_ether.h> 20 #include <linux/if_vlan.h> 21 #include <linux/cpu.h> 22 #include "qedf.h" 23 #include "qedf_dbg.h" 24 #include <uapi/linux/pci_regs.h> 25 26 const struct qed_fcoe_ops *qed_ops; 27 28 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id); 29 static void qedf_remove(struct pci_dev *pdev); 30 static void qedf_shutdown(struct pci_dev *pdev); 31 32 /* 33 * Driver module parameters. 34 */ 35 static unsigned int qedf_dev_loss_tmo = 60; 36 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO); 37 MODULE_PARM_DESC(dev_loss_tmo, " dev_loss_tmo setting for attached " 38 "remote ports (default 60)"); 39 40 uint qedf_debug = QEDF_LOG_INFO; 41 module_param_named(debug, qedf_debug, uint, S_IRUGO); 42 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging" 43 " mask"); 44 45 static uint qedf_fipvlan_retries = 60; 46 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO); 47 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt " 48 "before giving up (default 60)"); 49 50 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN; 51 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO); 52 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails " 53 "(default 1002)."); 54 55 static int qedf_default_prio = -1; 56 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO); 57 MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE" 58 " traffic (value between 0 and 7, default 3)."); 59 60 uint qedf_dump_frames; 61 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR); 62 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames " 63 "(default off)"); 64 65 static uint qedf_queue_depth; 66 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO); 67 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered " 68 "by the qedf driver. Default is 0 (use OS default)."); 69 70 uint qedf_io_tracing; 71 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR); 72 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions " 73 "into trace buffer. (default off)."); 74 75 static uint qedf_max_lun = MAX_FIBRE_LUNS; 76 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO); 77 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver " 78 "supports. (default 0xffffffff)"); 79 80 uint qedf_link_down_tmo; 81 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO); 82 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the " 83 "link is down by N seconds."); 84 85 bool qedf_retry_delay; 86 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR); 87 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry " 88 "delay handling (default off)."); 89 90 static bool qedf_dcbx_no_wait; 91 module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR); 92 MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start " 93 "sending FIP VLAN requests on link up (Default: off)."); 94 95 static uint qedf_dp_module; 96 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO); 97 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed " 98 "qed module during probe."); 99 100 static uint qedf_dp_level = QED_LEVEL_NOTICE; 101 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO); 102 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module " 103 "during probe (0-3: 0 more verbose)."); 104 105 struct workqueue_struct *qedf_io_wq; 106 107 static struct fcoe_percpu_s qedf_global; 108 static DEFINE_SPINLOCK(qedf_global_lock); 109 110 static struct kmem_cache *qedf_io_work_cache; 111 112 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id) 113 { 114 qedf->vlan_id = vlan_id; 115 qedf->vlan_id |= qedf->prio << VLAN_PRIO_SHIFT; 116 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Setting vlan_id=%04x " 117 "prio=%d.\n", vlan_id, qedf->prio); 118 } 119 120 /* Returns true if we have a valid vlan, false otherwise */ 121 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf) 122 { 123 int rc; 124 125 while (qedf->fipvlan_retries--) { 126 /* This is to catch if link goes down during fipvlan retries */ 127 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 128 QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n"); 129 return false; 130 } 131 132 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 133 QEDF_ERR(&qedf->dbg_ctx, "Driver unloading.\n"); 134 return false; 135 } 136 137 if (qedf->vlan_id > 0) { 138 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 139 "vlan = 0x%x already set.\n", qedf->vlan_id); 140 return true; 141 } 142 143 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 144 "Retry %d.\n", qedf->fipvlan_retries); 145 init_completion(&qedf->fipvlan_compl); 146 qedf_fcoe_send_vlan_req(qedf); 147 rc = wait_for_completion_timeout(&qedf->fipvlan_compl, 148 1 * HZ); 149 if (rc > 0 && 150 (atomic_read(&qedf->link_state) == QEDF_LINK_UP)) { 151 fcoe_ctlr_link_up(&qedf->ctlr); 152 return true; 153 } 154 } 155 156 return false; 157 } 158 159 static void qedf_handle_link_update(struct work_struct *work) 160 { 161 struct qedf_ctx *qedf = 162 container_of(work, struct qedf_ctx, link_update.work); 163 int rc; 164 165 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n", 166 atomic_read(&qedf->link_state)); 167 168 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 169 rc = qedf_initiate_fipvlan_req(qedf); 170 if (rc) 171 return; 172 173 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 174 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 175 "Link is down, resetting vlan_id.\n"); 176 qedf->vlan_id = 0; 177 return; 178 } 179 180 /* 181 * If we get here then we never received a repsonse to our 182 * fip vlan request so set the vlan_id to the default and 183 * tell FCoE that the link is up 184 */ 185 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN " 186 "response, falling back to default VLAN %d.\n", 187 qedf_fallback_vlan); 188 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 189 190 /* 191 * Zero out data_src_addr so we'll update it with the new 192 * lport port_id 193 */ 194 eth_zero_addr(qedf->data_src_addr); 195 fcoe_ctlr_link_up(&qedf->ctlr); 196 } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 197 /* 198 * If we hit here and link_down_tmo_valid is still 1 it means 199 * that link_down_tmo timed out so set it to 0 to make sure any 200 * other readers have accurate state. 201 */ 202 atomic_set(&qedf->link_down_tmo_valid, 0); 203 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 204 "Calling fcoe_ctlr_link_down().\n"); 205 fcoe_ctlr_link_down(&qedf->ctlr); 206 if (qedf_wait_for_upload(qedf) == false) 207 QEDF_ERR(&qedf->dbg_ctx, 208 "Could not upload all sessions.\n"); 209 /* Reset the number of FIP VLAN retries */ 210 qedf->fipvlan_retries = qedf_fipvlan_retries; 211 } 212 } 213 214 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1 215 #define QEDF_FCOE_MAC_METHOD_FCF_MAP 2 216 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3 217 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp) 218 { 219 u8 *granted_mac; 220 struct fc_frame_header *fh = fc_frame_header_get(fp); 221 u8 fc_map[3]; 222 int method = 0; 223 224 /* Get granted MAC address from FIP FLOGI payload */ 225 granted_mac = fr_cb(fp)->granted_mac; 226 227 /* 228 * We set the source MAC for FCoE traffic based on the Granted MAC 229 * address from the switch. 230 * 231 * If granted_mac is non-zero, we used that. 232 * If the granted_mac is zeroed out, created the FCoE MAC based on 233 * the sel_fcf->fc_map and the d_id fo the FLOGI frame. 234 * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the 235 * d_id of the FLOGI frame. 236 */ 237 if (!is_zero_ether_addr(granted_mac)) { 238 ether_addr_copy(qedf->data_src_addr, granted_mac); 239 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC; 240 } else if (qedf->ctlr.sel_fcf->fc_map != 0) { 241 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map); 242 qedf->data_src_addr[0] = fc_map[0]; 243 qedf->data_src_addr[1] = fc_map[1]; 244 qedf->data_src_addr[2] = fc_map[2]; 245 qedf->data_src_addr[3] = fh->fh_d_id[0]; 246 qedf->data_src_addr[4] = fh->fh_d_id[1]; 247 qedf->data_src_addr[5] = fh->fh_d_id[2]; 248 method = QEDF_FCOE_MAC_METHOD_FCF_MAP; 249 } else { 250 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id); 251 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC; 252 } 253 254 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 255 "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method); 256 } 257 258 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp, 259 void *arg) 260 { 261 struct fc_exch *exch = fc_seq_exch(seq); 262 struct fc_lport *lport = exch->lp; 263 struct qedf_ctx *qedf = lport_priv(lport); 264 265 if (!qedf) { 266 QEDF_ERR(NULL, "qedf is NULL.\n"); 267 return; 268 } 269 270 /* 271 * If ERR_PTR is set then don't try to stat anything as it will cause 272 * a crash when we access fp. 273 */ 274 if (IS_ERR(fp)) { 275 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 276 "fp has IS_ERR() set.\n"); 277 goto skip_stat; 278 } 279 280 /* Log stats for FLOGI reject */ 281 if (fc_frame_payload_op(fp) == ELS_LS_RJT) 282 qedf->flogi_failed++; 283 else if (fc_frame_payload_op(fp) == ELS_LS_ACC) { 284 /* Set the source MAC we will use for FCoE traffic */ 285 qedf_set_data_src_addr(qedf, fp); 286 } 287 288 /* Complete flogi_compl so we can proceed to sending ADISCs */ 289 complete(&qedf->flogi_compl); 290 291 skip_stat: 292 /* Report response to libfc */ 293 fc_lport_flogi_resp(seq, fp, lport); 294 } 295 296 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did, 297 struct fc_frame *fp, unsigned int op, 298 void (*resp)(struct fc_seq *, 299 struct fc_frame *, 300 void *), 301 void *arg, u32 timeout) 302 { 303 struct qedf_ctx *qedf = lport_priv(lport); 304 305 /* 306 * Intercept FLOGI for statistic purposes. Note we use the resp 307 * callback to tell if this is really a flogi. 308 */ 309 if (resp == fc_lport_flogi_resp) { 310 qedf->flogi_cnt++; 311 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp, 312 arg, timeout); 313 } 314 315 return fc_elsct_send(lport, did, fp, op, resp, arg, timeout); 316 } 317 318 int qedf_send_flogi(struct qedf_ctx *qedf) 319 { 320 struct fc_lport *lport; 321 struct fc_frame *fp; 322 323 lport = qedf->lport; 324 325 if (!lport->tt.elsct_send) { 326 QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n"); 327 return -EINVAL; 328 } 329 330 fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); 331 if (!fp) { 332 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n"); 333 return -ENOMEM; 334 } 335 336 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 337 "Sending FLOGI to reestablish session with switch.\n"); 338 lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, 339 ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov); 340 341 init_completion(&qedf->flogi_compl); 342 343 return 0; 344 } 345 346 /* 347 * This function is called if link_down_tmo is in use. If we get a link up and 348 * link_down_tmo has not expired then use just FLOGI/ADISC to recover our 349 * sessions with targets. Otherwise, just call fcoe_ctlr_link_up(). 350 */ 351 static void qedf_link_recovery(struct work_struct *work) 352 { 353 struct qedf_ctx *qedf = 354 container_of(work, struct qedf_ctx, link_recovery.work); 355 struct fc_lport *lport = qedf->lport; 356 struct fc_rport_priv *rdata; 357 bool rc; 358 int retries = 30; 359 int rval, i; 360 struct list_head rdata_login_list; 361 362 INIT_LIST_HEAD(&rdata_login_list); 363 364 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 365 "Link down tmo did not expire.\n"); 366 367 /* 368 * Essentially reset the fcoe_ctlr here without affecting the state 369 * of the libfc structs. 370 */ 371 qedf->ctlr.state = FIP_ST_LINK_WAIT; 372 fcoe_ctlr_link_down(&qedf->ctlr); 373 374 /* 375 * Bring the link up before we send the fipvlan request so libfcoe 376 * can select a new fcf in parallel 377 */ 378 fcoe_ctlr_link_up(&qedf->ctlr); 379 380 /* Since the link when down and up to verify which vlan we're on */ 381 qedf->fipvlan_retries = qedf_fipvlan_retries; 382 rc = qedf_initiate_fipvlan_req(qedf); 383 /* If getting the VLAN fails, set the VLAN to the fallback one */ 384 if (!rc) 385 qedf_set_vlan_id(qedf, qedf_fallback_vlan); 386 387 /* 388 * We need to wait for an FCF to be selected due to the 389 * fcoe_ctlr_link_up other the FLOGI will be rejected. 390 */ 391 while (retries > 0) { 392 if (qedf->ctlr.sel_fcf) { 393 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 394 "FCF reselected, proceeding with FLOGI.\n"); 395 break; 396 } 397 msleep(500); 398 retries--; 399 } 400 401 if (retries < 1) { 402 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for " 403 "FCF selection.\n"); 404 return; 405 } 406 407 rval = qedf_send_flogi(qedf); 408 if (rval) 409 return; 410 411 /* Wait for FLOGI completion before proceeding with sending ADISCs */ 412 i = wait_for_completion_timeout(&qedf->flogi_compl, 413 qedf->lport->r_a_tov); 414 if (i == 0) { 415 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n"); 416 return; 417 } 418 419 /* 420 * Call lport->tt.rport_login which will cause libfc to send an 421 * ADISC since the rport is in state ready. 422 */ 423 mutex_lock(&lport->disc.disc_mutex); 424 list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) { 425 if (kref_get_unless_zero(&rdata->kref)) { 426 fc_rport_login(rdata); 427 kref_put(&rdata->kref, fc_rport_destroy); 428 } 429 } 430 mutex_unlock(&lport->disc.disc_mutex); 431 } 432 433 static void qedf_update_link_speed(struct qedf_ctx *qedf, 434 struct qed_link_output *link) 435 { 436 struct fc_lport *lport = qedf->lport; 437 438 lport->link_speed = FC_PORTSPEED_UNKNOWN; 439 lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN; 440 441 /* Set fc_host link speed */ 442 switch (link->speed) { 443 case 10000: 444 lport->link_speed = FC_PORTSPEED_10GBIT; 445 break; 446 case 25000: 447 lport->link_speed = FC_PORTSPEED_25GBIT; 448 break; 449 case 40000: 450 lport->link_speed = FC_PORTSPEED_40GBIT; 451 break; 452 case 50000: 453 lport->link_speed = FC_PORTSPEED_50GBIT; 454 break; 455 case 100000: 456 lport->link_speed = FC_PORTSPEED_100GBIT; 457 break; 458 case 20000: 459 lport->link_speed = FC_PORTSPEED_20GBIT; 460 break; 461 default: 462 lport->link_speed = FC_PORTSPEED_UNKNOWN; 463 break; 464 } 465 466 /* 467 * Set supported link speed by querying the supported 468 * capabilities of the link. 469 */ 470 if ((link->supported_caps & QED_LM_10000baseT_Full_BIT) || 471 (link->supported_caps & QED_LM_10000baseKX4_Full_BIT) || 472 (link->supported_caps & QED_LM_10000baseR_FEC_BIT) || 473 (link->supported_caps & QED_LM_10000baseCR_Full_BIT) || 474 (link->supported_caps & QED_LM_10000baseSR_Full_BIT) || 475 (link->supported_caps & QED_LM_10000baseLR_Full_BIT) || 476 (link->supported_caps & QED_LM_10000baseLRM_Full_BIT) || 477 (link->supported_caps & QED_LM_10000baseKR_Full_BIT)) { 478 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT; 479 } 480 if ((link->supported_caps & QED_LM_25000baseKR_Full_BIT) || 481 (link->supported_caps & QED_LM_25000baseCR_Full_BIT) || 482 (link->supported_caps & QED_LM_25000baseSR_Full_BIT)) { 483 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT; 484 } 485 if ((link->supported_caps & QED_LM_40000baseLR4_Full_BIT) || 486 (link->supported_caps & QED_LM_40000baseKR4_Full_BIT) || 487 (link->supported_caps & QED_LM_40000baseCR4_Full_BIT) || 488 (link->supported_caps & QED_LM_40000baseSR4_Full_BIT)) { 489 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT; 490 } 491 if ((link->supported_caps & QED_LM_50000baseKR2_Full_BIT) || 492 (link->supported_caps & QED_LM_50000baseCR2_Full_BIT) || 493 (link->supported_caps & QED_LM_50000baseSR2_Full_BIT)) { 494 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT; 495 } 496 if ((link->supported_caps & QED_LM_100000baseKR4_Full_BIT) || 497 (link->supported_caps & QED_LM_100000baseSR4_Full_BIT) || 498 (link->supported_caps & QED_LM_100000baseCR4_Full_BIT) || 499 (link->supported_caps & QED_LM_100000baseLR4_ER4_Full_BIT)) { 500 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT; 501 } 502 if (link->supported_caps & QED_LM_20000baseKR2_Full_BIT) 503 lport->link_supported_speeds |= FC_PORTSPEED_20GBIT; 504 fc_host_supported_speeds(lport->host) = lport->link_supported_speeds; 505 } 506 507 static void qedf_link_update(void *dev, struct qed_link_output *link) 508 { 509 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 510 511 /* 512 * Prevent race where we're removing the module and we get link update 513 * for qed. 514 */ 515 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 516 QEDF_ERR(&qedf->dbg_ctx, 517 "Ignore link update, driver getting unload.\n"); 518 return; 519 } 520 521 if (link->link_up) { 522 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { 523 QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC, 524 "Ignoring link up event as link is already up.\n"); 525 return; 526 } 527 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n", 528 link->speed / 1000); 529 530 /* Cancel any pending link down work */ 531 cancel_delayed_work(&qedf->link_update); 532 533 atomic_set(&qedf->link_state, QEDF_LINK_UP); 534 qedf_update_link_speed(qedf, link); 535 536 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE || 537 qedf_dcbx_no_wait) { 538 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 539 "DCBx done.\n"); 540 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 541 queue_delayed_work(qedf->link_update_wq, 542 &qedf->link_recovery, 0); 543 else 544 queue_delayed_work(qedf->link_update_wq, 545 &qedf->link_update, 0); 546 atomic_set(&qedf->link_down_tmo_valid, 0); 547 } 548 549 } else { 550 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n"); 551 552 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 553 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); 554 /* 555 * Flag that we're waiting for the link to come back up before 556 * informing the fcoe layer of the event. 557 */ 558 if (qedf_link_down_tmo > 0) { 559 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 560 "Starting link down tmo.\n"); 561 atomic_set(&qedf->link_down_tmo_valid, 1); 562 } 563 qedf->vlan_id = 0; 564 qedf_update_link_speed(qedf, link); 565 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 566 qedf_link_down_tmo * HZ); 567 } 568 } 569 570 571 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type) 572 { 573 struct qedf_ctx *qedf = (struct qedf_ctx *)dev; 574 u8 tmp_prio; 575 576 QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe " 577 "prio=%d.\n", get->operational.valid, get->operational.enabled, 578 get->operational.app_prio.fcoe); 579 580 if (get->operational.enabled && get->operational.valid) { 581 /* If DCBX was already negotiated on link up then just exit */ 582 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) { 583 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 584 "DCBX already set on link up.\n"); 585 return; 586 } 587 588 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE); 589 590 /* 591 * Set the 8021q priority in the following manner: 592 * 593 * 1. If a modparam is set use that 594 * 2. If the value is not between 0..7 use the default 595 * 3. Use the priority we get from the DCBX app tag 596 */ 597 tmp_prio = get->operational.app_prio.fcoe; 598 if (qedf_default_prio > -1) 599 qedf->prio = qedf_default_prio; 600 else if (tmp_prio < 0 || tmp_prio > 7) { 601 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 602 "FIP/FCoE prio %d out of range, setting to %d.\n", 603 tmp_prio, QEDF_DEFAULT_PRIO); 604 qedf->prio = QEDF_DEFAULT_PRIO; 605 } else 606 qedf->prio = tmp_prio; 607 608 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP && 609 !qedf_dcbx_no_wait) { 610 if (atomic_read(&qedf->link_down_tmo_valid) > 0) 611 queue_delayed_work(qedf->link_update_wq, 612 &qedf->link_recovery, 0); 613 else 614 queue_delayed_work(qedf->link_update_wq, 615 &qedf->link_update, 0); 616 atomic_set(&qedf->link_down_tmo_valid, 0); 617 } 618 } 619 620 } 621 622 static u32 qedf_get_login_failures(void *cookie) 623 { 624 struct qedf_ctx *qedf; 625 626 qedf = (struct qedf_ctx *)cookie; 627 return qedf->flogi_failed; 628 } 629 630 static struct qed_fcoe_cb_ops qedf_cb_ops = { 631 { 632 .link_update = qedf_link_update, 633 .dcbx_aen = qedf_dcbx_handler, 634 .get_generic_tlv_data = qedf_get_generic_tlv_data, 635 .get_protocol_tlv_data = qedf_get_protocol_tlv_data, 636 } 637 }; 638 639 /* 640 * Various transport templates. 641 */ 642 643 static struct scsi_transport_template *qedf_fc_transport_template; 644 static struct scsi_transport_template *qedf_fc_vport_transport_template; 645 646 /* 647 * SCSI EH handlers 648 */ 649 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd) 650 { 651 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); 652 struct fc_lport *lport; 653 struct qedf_ctx *qedf; 654 struct qedf_ioreq *io_req; 655 struct fc_rport_libfc_priv *rp = rport->dd_data; 656 struct fc_rport_priv *rdata; 657 struct qedf_rport *fcport = NULL; 658 int rc = FAILED; 659 int wait_count = 100; 660 int refcount = 0; 661 int rval; 662 int got_ref = 0; 663 664 lport = shost_priv(sc_cmd->device->host); 665 qedf = (struct qedf_ctx *)lport_priv(lport); 666 667 /* rport and tgt are allocated together, so tgt should be non-NULL */ 668 fcport = (struct qedf_rport *)&rp[1]; 669 rdata = fcport->rdata; 670 if (!rdata || !kref_get_unless_zero(&rdata->kref)) { 671 QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd); 672 rc = 1; 673 goto out; 674 } 675 676 677 io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr; 678 if (!io_req) { 679 QEDF_ERR(&qedf->dbg_ctx, 680 "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n", 681 sc_cmd, sc_cmd->cmnd[0], 682 rdata->ids.port_id); 683 rc = SUCCESS; 684 goto drop_rdata_kref; 685 } 686 687 rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */ 688 if (rval) 689 got_ref = 1; 690 691 /* If we got a valid io_req, confirm it belongs to this sc_cmd. */ 692 if (!rval || io_req->sc_cmd != sc_cmd) { 693 QEDF_ERR(&qedf->dbg_ctx, 694 "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n", 695 io_req->sc_cmd, sc_cmd, rdata->ids.port_id); 696 697 goto drop_rdata_kref; 698 } 699 700 if (fc_remote_port_chkready(rport)) { 701 refcount = kref_read(&io_req->refcount); 702 QEDF_ERR(&qedf->dbg_ctx, 703 "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n", 704 io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0], 705 refcount, rdata->ids.port_id); 706 707 goto drop_rdata_kref; 708 } 709 710 rc = fc_block_scsi_eh(sc_cmd); 711 if (rc) 712 goto drop_rdata_kref; 713 714 if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) { 715 QEDF_ERR(&qedf->dbg_ctx, 716 "Connection uploading, xid=0x%x., port_id=%06x\n", 717 io_req->xid, rdata->ids.port_id); 718 while (io_req->sc_cmd && (wait_count != 0)) { 719 msleep(100); 720 wait_count--; 721 } 722 if (wait_count) { 723 QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n"); 724 rc = SUCCESS; 725 } else { 726 QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n"); 727 rc = FAILED; 728 } 729 goto drop_rdata_kref; 730 } 731 732 if (lport->state != LPORT_ST_READY || !(lport->link_up)) { 733 QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n"); 734 goto drop_rdata_kref; 735 } 736 737 QEDF_ERR(&qedf->dbg_ctx, 738 "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n", 739 io_req, sc_cmd, io_req->xid, io_req->fp_idx, 740 rdata->ids.port_id); 741 742 if (qedf->stop_io_on_error) { 743 qedf_stop_all_io(qedf); 744 rc = SUCCESS; 745 goto drop_rdata_kref; 746 } 747 748 init_completion(&io_req->abts_done); 749 rval = qedf_initiate_abts(io_req, true); 750 if (rval) { 751 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n"); 752 /* 753 * If we fail to queue the ABTS then return this command to 754 * the SCSI layer as it will own and free the xid 755 */ 756 rc = SUCCESS; 757 qedf_scsi_done(qedf, io_req, DID_ERROR); 758 goto drop_rdata_kref; 759 } 760 761 wait_for_completion(&io_req->abts_done); 762 763 if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS || 764 io_req->event == QEDF_IOREQ_EV_ABORT_FAILED || 765 io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) { 766 /* 767 * If we get a reponse to the abort this is success from 768 * the perspective that all references to the command have 769 * been removed from the driver and firmware 770 */ 771 rc = SUCCESS; 772 } else { 773 /* If the abort and cleanup failed then return a failure */ 774 rc = FAILED; 775 } 776 777 if (rc == SUCCESS) 778 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n", 779 io_req->xid); 780 else 781 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n", 782 io_req->xid); 783 784 drop_rdata_kref: 785 kref_put(&rdata->kref, fc_rport_destroy); 786 out: 787 if (got_ref) 788 kref_put(&io_req->refcount, qedf_release_cmd); 789 return rc; 790 } 791 792 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd) 793 { 794 QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...", 795 sc_cmd->device->host->host_no, sc_cmd->device->id, 796 sc_cmd->device->lun); 797 return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET); 798 } 799 800 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd) 801 { 802 QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ", 803 sc_cmd->device->host->host_no, sc_cmd->device->id, 804 sc_cmd->device->lun); 805 return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET); 806 } 807 808 bool qedf_wait_for_upload(struct qedf_ctx *qedf) 809 { 810 struct qedf_rport *fcport = NULL; 811 int wait_cnt = 120; 812 813 while (wait_cnt--) { 814 if (atomic_read(&qedf->num_offloads)) 815 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 816 "Waiting for all uploads to complete num_offloads = 0x%x.\n", 817 atomic_read(&qedf->num_offloads)); 818 else 819 return true; 820 msleep(500); 821 } 822 823 rcu_read_lock(); 824 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 825 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, 826 &fcport->flags)) { 827 if (fcport->rdata) 828 QEDF_ERR(&qedf->dbg_ctx, 829 "Waiting for fcport %p portid=%06x.\n", 830 fcport, fcport->rdata->ids.port_id); 831 } else { 832 QEDF_ERR(&qedf->dbg_ctx, 833 "Waiting for fcport %p.\n", fcport); 834 } 835 } 836 rcu_read_unlock(); 837 return false; 838 839 } 840 841 /* Performs soft reset of qedf_ctx by simulating a link down/up */ 842 void qedf_ctx_soft_reset(struct fc_lport *lport) 843 { 844 struct qedf_ctx *qedf; 845 struct qed_link_output if_link; 846 847 if (lport->vport) { 848 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n"); 849 return; 850 } 851 852 qedf = lport_priv(lport); 853 854 /* For host reset, essentially do a soft link up/down */ 855 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 856 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 857 "Queuing link down work.\n"); 858 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 859 0); 860 861 if (qedf_wait_for_upload(qedf) == false) { 862 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 863 WARN_ON(atomic_read(&qedf->num_offloads)); 864 } 865 866 /* Before setting link up query physical link state */ 867 qed_ops->common->get_link(qedf->cdev, &if_link); 868 /* Bail if the physical link is not up */ 869 if (!if_link.link_up) { 870 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 871 "Physical link is not up.\n"); 872 return; 873 } 874 /* Flush and wait to make sure link down is processed */ 875 flush_delayed_work(&qedf->link_update); 876 msleep(500); 877 878 atomic_set(&qedf->link_state, QEDF_LINK_UP); 879 qedf->vlan_id = 0; 880 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 881 "Queue link up work.\n"); 882 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 883 0); 884 } 885 886 /* Reset the host by gracefully logging out and then logging back in */ 887 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd) 888 { 889 struct fc_lport *lport; 890 struct qedf_ctx *qedf; 891 892 lport = shost_priv(sc_cmd->device->host); 893 qedf = lport_priv(lport); 894 895 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN || 896 test_bit(QEDF_UNLOADING, &qedf->flags)) 897 return FAILED; 898 899 QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued..."); 900 901 qedf_ctx_soft_reset(lport); 902 903 return SUCCESS; 904 } 905 906 static int qedf_slave_configure(struct scsi_device *sdev) 907 { 908 if (qedf_queue_depth) { 909 scsi_change_queue_depth(sdev, qedf_queue_depth); 910 } 911 912 return 0; 913 } 914 915 static struct scsi_host_template qedf_host_template = { 916 .module = THIS_MODULE, 917 .name = QEDF_MODULE_NAME, 918 .this_id = -1, 919 .cmd_per_lun = 32, 920 .max_sectors = 0xffff, 921 .queuecommand = qedf_queuecommand, 922 .shost_attrs = qedf_host_attrs, 923 .eh_abort_handler = qedf_eh_abort, 924 .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */ 925 .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */ 926 .eh_host_reset_handler = qedf_eh_host_reset, 927 .slave_configure = qedf_slave_configure, 928 .dma_boundary = QED_HW_DMA_BOUNDARY, 929 .sg_tablesize = QEDF_MAX_BDS_PER_CMD, 930 .can_queue = FCOE_PARAMS_NUM_TASKS, 931 .change_queue_depth = scsi_change_queue_depth, 932 }; 933 934 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen) 935 { 936 int rc; 937 938 spin_lock(&qedf_global_lock); 939 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global); 940 spin_unlock(&qedf_global_lock); 941 942 return rc; 943 } 944 945 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id) 946 { 947 struct qedf_rport *fcport; 948 struct fc_rport_priv *rdata; 949 950 rcu_read_lock(); 951 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { 952 rdata = fcport->rdata; 953 if (rdata == NULL) 954 continue; 955 if (rdata->ids.port_id == port_id) { 956 rcu_read_unlock(); 957 return fcport; 958 } 959 } 960 rcu_read_unlock(); 961 962 /* Return NULL to caller to let them know fcport was not found */ 963 return NULL; 964 } 965 966 /* Transmits an ELS frame over an offloaded session */ 967 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp) 968 { 969 struct fc_frame_header *fh; 970 int rc = 0; 971 972 fh = fc_frame_header_get(fp); 973 if ((fh->fh_type == FC_TYPE_ELS) && 974 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 975 switch (fc_frame_payload_op(fp)) { 976 case ELS_ADISC: 977 qedf_send_adisc(fcport, fp); 978 rc = 1; 979 break; 980 } 981 } 982 983 return rc; 984 } 985 986 /** 987 * qedf_xmit - qedf FCoE frame transmit function 988 * 989 */ 990 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp) 991 { 992 struct fc_lport *base_lport; 993 struct qedf_ctx *qedf; 994 struct ethhdr *eh; 995 struct fcoe_crc_eof *cp; 996 struct sk_buff *skb; 997 struct fc_frame_header *fh; 998 struct fcoe_hdr *hp; 999 u8 sof, eof; 1000 u32 crc; 1001 unsigned int hlen, tlen, elen; 1002 int wlen; 1003 struct fc_stats *stats; 1004 struct fc_lport *tmp_lport; 1005 struct fc_lport *vn_port = NULL; 1006 struct qedf_rport *fcport; 1007 int rc; 1008 u16 vlan_tci = 0; 1009 1010 qedf = (struct qedf_ctx *)lport_priv(lport); 1011 1012 fh = fc_frame_header_get(fp); 1013 skb = fp_skb(fp); 1014 1015 /* Filter out traffic to other NPIV ports on the same host */ 1016 if (lport->vport) 1017 base_lport = shost_priv(vport_to_shost(lport->vport)); 1018 else 1019 base_lport = lport; 1020 1021 /* Flag if the destination is the base port */ 1022 if (base_lport->port_id == ntoh24(fh->fh_d_id)) { 1023 vn_port = base_lport; 1024 } else { 1025 /* Got through the list of vports attached to the base_lport 1026 * and see if we have a match with the destination address. 1027 */ 1028 list_for_each_entry(tmp_lport, &base_lport->vports, list) { 1029 if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) { 1030 vn_port = tmp_lport; 1031 break; 1032 } 1033 } 1034 } 1035 if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) { 1036 struct fc_rport_priv *rdata = NULL; 1037 1038 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 1039 "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id)); 1040 kfree_skb(skb); 1041 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id)); 1042 if (rdata) { 1043 rdata->retries = lport->max_rport_retry_count; 1044 kref_put(&rdata->kref, fc_rport_destroy); 1045 } 1046 return -EINVAL; 1047 } 1048 /* End NPIV filtering */ 1049 1050 if (!qedf->ctlr.sel_fcf) { 1051 kfree_skb(skb); 1052 return 0; 1053 } 1054 1055 if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) { 1056 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n"); 1057 kfree_skb(skb); 1058 return 0; 1059 } 1060 1061 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { 1062 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n"); 1063 kfree_skb(skb); 1064 return 0; 1065 } 1066 1067 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { 1068 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb)) 1069 return 0; 1070 } 1071 1072 /* Check to see if this needs to be sent on an offloaded session */ 1073 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 1074 1075 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1076 rc = qedf_xmit_l2_frame(fcport, fp); 1077 /* 1078 * If the frame was successfully sent over the middle path 1079 * then do not try to also send it over the LL2 path 1080 */ 1081 if (rc) 1082 return 0; 1083 } 1084 1085 sof = fr_sof(fp); 1086 eof = fr_eof(fp); 1087 1088 elen = sizeof(struct ethhdr); 1089 hlen = sizeof(struct fcoe_hdr); 1090 tlen = sizeof(struct fcoe_crc_eof); 1091 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; 1092 1093 skb->ip_summed = CHECKSUM_NONE; 1094 crc = fcoe_fc_crc(fp); 1095 1096 /* copy port crc and eof to the skb buff */ 1097 if (skb_is_nonlinear(skb)) { 1098 skb_frag_t *frag; 1099 1100 if (qedf_get_paged_crc_eof(skb, tlen)) { 1101 kfree_skb(skb); 1102 return -ENOMEM; 1103 } 1104 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; 1105 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset; 1106 } else { 1107 cp = skb_put(skb, tlen); 1108 } 1109 1110 memset(cp, 0, sizeof(*cp)); 1111 cp->fcoe_eof = eof; 1112 cp->fcoe_crc32 = cpu_to_le32(~crc); 1113 if (skb_is_nonlinear(skb)) { 1114 kunmap_atomic(cp); 1115 cp = NULL; 1116 } 1117 1118 1119 /* adjust skb network/transport offsets to match mac/fcoe/port */ 1120 skb_push(skb, elen + hlen); 1121 skb_reset_mac_header(skb); 1122 skb_reset_network_header(skb); 1123 skb->mac_len = elen; 1124 skb->protocol = htons(ETH_P_FCOE); 1125 1126 /* 1127 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN 1128 * for FIP/FCoE traffic. 1129 */ 1130 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id); 1131 1132 /* fill up mac and fcoe headers */ 1133 eh = eth_hdr(skb); 1134 eh->h_proto = htons(ETH_P_FCOE); 1135 if (qedf->ctlr.map_dest) 1136 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); 1137 else 1138 /* insert GW address */ 1139 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr); 1140 1141 /* Set the source MAC address */ 1142 ether_addr_copy(eh->h_source, qedf->data_src_addr); 1143 1144 hp = (struct fcoe_hdr *)(eh + 1); 1145 memset(hp, 0, sizeof(*hp)); 1146 if (FC_FCOE_VER) 1147 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); 1148 hp->fcoe_sof = sof; 1149 1150 /*update tx stats */ 1151 stats = per_cpu_ptr(lport->stats, get_cpu()); 1152 stats->TxFrames++; 1153 stats->TxWords += wlen; 1154 put_cpu(); 1155 1156 /* Get VLAN ID from skb for printing purposes */ 1157 __vlan_hwaccel_get_tag(skb, &vlan_tci); 1158 1159 /* send down to lld */ 1160 fr_dev(fp) = lport; 1161 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: " 1162 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n", 1163 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type, 1164 vlan_tci); 1165 if (qedf_dump_frames) 1166 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 1167 1, skb->data, skb->len, false); 1168 rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0); 1169 if (rc) { 1170 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc); 1171 kfree_skb(skb); 1172 return rc; 1173 } 1174 1175 return 0; 1176 } 1177 1178 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1179 { 1180 int rval = 0; 1181 u32 *pbl; 1182 dma_addr_t page; 1183 int num_pages; 1184 1185 /* Calculate appropriate queue and PBL sizes */ 1186 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 1187 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE); 1188 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) * 1189 sizeof(void *); 1190 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE; 1191 1192 fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1193 &fcport->sq_dma, GFP_KERNEL); 1194 if (!fcport->sq) { 1195 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n"); 1196 rval = 1; 1197 goto out; 1198 } 1199 1200 fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 1201 fcport->sq_pbl_size, 1202 &fcport->sq_pbl_dma, GFP_KERNEL); 1203 if (!fcport->sq_pbl) { 1204 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n"); 1205 rval = 1; 1206 goto out_free_sq; 1207 } 1208 1209 /* Create PBL */ 1210 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE; 1211 page = fcport->sq_dma; 1212 pbl = (u32 *)fcport->sq_pbl; 1213 1214 while (num_pages--) { 1215 *pbl = U64_LO(page); 1216 pbl++; 1217 *pbl = U64_HI(page); 1218 pbl++; 1219 page += QEDF_PAGE_SIZE; 1220 } 1221 1222 return rval; 1223 1224 out_free_sq: 1225 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq, 1226 fcport->sq_dma); 1227 out: 1228 return rval; 1229 } 1230 1231 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) 1232 { 1233 if (fcport->sq_pbl) 1234 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size, 1235 fcport->sq_pbl, fcport->sq_pbl_dma); 1236 if (fcport->sq) 1237 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, 1238 fcport->sq, fcport->sq_dma); 1239 } 1240 1241 static int qedf_offload_connection(struct qedf_ctx *qedf, 1242 struct qedf_rport *fcport) 1243 { 1244 struct qed_fcoe_params_offload conn_info; 1245 u32 port_id; 1246 int rval; 1247 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe)); 1248 1249 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection " 1250 "portid=%06x.\n", fcport->rdata->ids.port_id); 1251 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle, 1252 &fcport->fw_cid, &fcport->p_doorbell); 1253 if (rval) { 1254 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection " 1255 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1256 rval = 1; /* For some reason qed returns 0 on failure here */ 1257 goto out; 1258 } 1259 1260 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x " 1261 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id, 1262 fcport->fw_cid, fcport->handle); 1263 1264 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload)); 1265 1266 /* Fill in the offload connection info */ 1267 conn_info.sq_pbl_addr = fcport->sq_pbl_dma; 1268 1269 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl); 1270 conn_info.sq_next_page_addr = 1271 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8)); 1272 1273 /* Need to use our FCoE MAC for the offload session */ 1274 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr); 1275 1276 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr); 1277 1278 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size; 1279 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20; 1280 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */ 1281 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size; 1282 1283 /* Set VLAN data */ 1284 conn_info.vlan_tag = qedf->vlan_id << 1285 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT; 1286 conn_info.vlan_tag |= 1287 qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT; 1288 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK << 1289 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT); 1290 1291 /* Set host port source id */ 1292 port_id = fc_host_port_id(qedf->lport->host); 1293 fcport->sid = port_id; 1294 conn_info.s_id.addr_hi = (port_id & 0x000000FF); 1295 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1296 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1297 1298 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq; 1299 1300 /* Set remote port destination id */ 1301 port_id = fcport->rdata->rport->port_id; 1302 conn_info.d_id.addr_hi = (port_id & 0x000000FF); 1303 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8; 1304 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16; 1305 1306 conn_info.def_q_idx = 0; /* Default index for send queue? */ 1307 1308 /* Set FC-TAPE specific flags if needed */ 1309 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) { 1310 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, 1311 "Enable CONF, REC for portid=%06x.\n", 1312 fcport->rdata->ids.port_id); 1313 conn_info.flags |= 1 << 1314 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT; 1315 conn_info.flags |= 1316 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) << 1317 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT; 1318 } 1319 1320 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info); 1321 if (rval) { 1322 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection " 1323 "for portid=%06x.\n", fcport->rdata->ids.port_id); 1324 goto out_free_conn; 1325 } else 1326 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload " 1327 "succeeded portid=%06x total_sqe=%d.\n", 1328 fcport->rdata->ids.port_id, total_sqe); 1329 1330 spin_lock_init(&fcport->rport_lock); 1331 atomic_set(&fcport->free_sqes, total_sqe); 1332 return 0; 1333 out_free_conn: 1334 qed_ops->release_conn(qedf->cdev, fcport->handle); 1335 out: 1336 return rval; 1337 } 1338 1339 #define QEDF_TERM_BUFF_SIZE 10 1340 static void qedf_upload_connection(struct qedf_ctx *qedf, 1341 struct qedf_rport *fcport) 1342 { 1343 void *term_params; 1344 dma_addr_t term_params_dma; 1345 1346 /* Term params needs to be a DMA coherent buffer as qed shared the 1347 * physical DMA address with the firmware. The buffer may be used in 1348 * the receive path so we may eventually have to move this. 1349 */ 1350 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, 1351 &term_params_dma, GFP_KERNEL); 1352 1353 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection " 1354 "port_id=%06x.\n", fcport->rdata->ids.port_id); 1355 1356 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma); 1357 qed_ops->release_conn(qedf->cdev, fcport->handle); 1358 1359 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params, 1360 term_params_dma); 1361 } 1362 1363 static void qedf_cleanup_fcport(struct qedf_ctx *qedf, 1364 struct qedf_rport *fcport) 1365 { 1366 struct fc_rport_priv *rdata = fcport->rdata; 1367 1368 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n", 1369 fcport->rdata->ids.port_id); 1370 1371 /* Flush any remaining i/o's before we upload the connection */ 1372 qedf_flush_active_ios(fcport, -1); 1373 1374 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) 1375 qedf_upload_connection(qedf, fcport); 1376 qedf_free_sq(qedf, fcport); 1377 fcport->rdata = NULL; 1378 fcport->qedf = NULL; 1379 kref_put(&rdata->kref, fc_rport_destroy); 1380 } 1381 1382 /** 1383 * This event_callback is called after successful completion of libfc 1384 * initiated target login. qedf can proceed with initiating the session 1385 * establishment. 1386 */ 1387 static void qedf_rport_event_handler(struct fc_lport *lport, 1388 struct fc_rport_priv *rdata, 1389 enum fc_rport_event event) 1390 { 1391 struct qedf_ctx *qedf = lport_priv(lport); 1392 struct fc_rport *rport = rdata->rport; 1393 struct fc_rport_libfc_priv *rp; 1394 struct qedf_rport *fcport; 1395 u32 port_id; 1396 int rval; 1397 unsigned long flags; 1398 1399 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, " 1400 "port_id = 0x%x\n", event, rdata->ids.port_id); 1401 1402 switch (event) { 1403 case RPORT_EV_READY: 1404 if (!rport) { 1405 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n"); 1406 break; 1407 } 1408 1409 rp = rport->dd_data; 1410 fcport = (struct qedf_rport *)&rp[1]; 1411 fcport->qedf = qedf; 1412 1413 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) { 1414 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading " 1415 "portid=0x%x as max number of offloaded sessions " 1416 "reached.\n", rdata->ids.port_id); 1417 return; 1418 } 1419 1420 /* 1421 * Don't try to offload the session again. Can happen when we 1422 * get an ADISC 1423 */ 1424 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 1425 QEDF_WARN(&(qedf->dbg_ctx), "Session already " 1426 "offloaded, portid=0x%x.\n", 1427 rdata->ids.port_id); 1428 return; 1429 } 1430 1431 if (rport->port_id == FC_FID_DIR_SERV) { 1432 /* 1433 * qedf_rport structure doesn't exist for 1434 * directory server. 1435 * We should not come here, as lport will 1436 * take care of fabric login 1437 */ 1438 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not " 1439 "exist for dir server port_id=%x\n", 1440 rdata->ids.port_id); 1441 break; 1442 } 1443 1444 if (rdata->spp_type != FC_TYPE_FCP) { 1445 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1446 "Not offloading since spp type isn't FCP\n"); 1447 break; 1448 } 1449 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { 1450 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1451 "Not FCP target so not offloading\n"); 1452 break; 1453 } 1454 1455 /* Initial reference held on entry, so this can't fail */ 1456 kref_get(&rdata->kref); 1457 fcport->rdata = rdata; 1458 fcport->rport = rport; 1459 1460 rval = qedf_alloc_sq(qedf, fcport); 1461 if (rval) { 1462 qedf_cleanup_fcport(qedf, fcport); 1463 break; 1464 } 1465 1466 /* Set device type */ 1467 if (rdata->flags & FC_RP_FLAGS_RETRY && 1468 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET && 1469 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) { 1470 fcport->dev_type = QEDF_RPORT_TYPE_TAPE; 1471 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1472 "portid=%06x is a TAPE device.\n", 1473 rdata->ids.port_id); 1474 } else { 1475 fcport->dev_type = QEDF_RPORT_TYPE_DISK; 1476 } 1477 1478 rval = qedf_offload_connection(qedf, fcport); 1479 if (rval) { 1480 qedf_cleanup_fcport(qedf, fcport); 1481 break; 1482 } 1483 1484 /* Add fcport to list of qedf_ctx list of offloaded ports */ 1485 spin_lock_irqsave(&qedf->hba_lock, flags); 1486 list_add_rcu(&fcport->peers, &qedf->fcports); 1487 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1488 1489 /* 1490 * Set the session ready bit to let everyone know that this 1491 * connection is ready for I/O 1492 */ 1493 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags); 1494 atomic_inc(&qedf->num_offloads); 1495 1496 break; 1497 case RPORT_EV_LOGO: 1498 case RPORT_EV_FAILED: 1499 case RPORT_EV_STOP: 1500 port_id = rdata->ids.port_id; 1501 if (port_id == FC_FID_DIR_SERV) 1502 break; 1503 1504 if (!rport) { 1505 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 1506 "port_id=%x - rport notcreated Yet!!\n", port_id); 1507 break; 1508 } 1509 rp = rport->dd_data; 1510 /* 1511 * Perform session upload. Note that rdata->peers is already 1512 * removed from disc->rports list before we get this event. 1513 */ 1514 fcport = (struct qedf_rport *)&rp[1]; 1515 1516 spin_lock_irqsave(&fcport->rport_lock, flags); 1517 /* Only free this fcport if it is offloaded already */ 1518 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) && 1519 !test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1520 &fcport->flags)) { 1521 set_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1522 &fcport->flags); 1523 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1524 qedf_cleanup_fcport(qedf, fcport); 1525 /* 1526 * Remove fcport to list of qedf_ctx list of offloaded 1527 * ports 1528 */ 1529 spin_lock_irqsave(&qedf->hba_lock, flags); 1530 list_del_rcu(&fcport->peers); 1531 spin_unlock_irqrestore(&qedf->hba_lock, flags); 1532 1533 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION, 1534 &fcport->flags); 1535 atomic_dec(&qedf->num_offloads); 1536 } else { 1537 spin_unlock_irqrestore(&fcport->rport_lock, flags); 1538 } 1539 break; 1540 1541 case RPORT_EV_NONE: 1542 break; 1543 } 1544 } 1545 1546 static void qedf_abort_io(struct fc_lport *lport) 1547 { 1548 /* NO-OP but need to fill in the template */ 1549 } 1550 1551 static void qedf_fcp_cleanup(struct fc_lport *lport) 1552 { 1553 /* 1554 * NO-OP but need to fill in template to prevent a NULL 1555 * function pointer dereference during link down. I/Os 1556 * will be flushed when port is uploaded. 1557 */ 1558 } 1559 1560 static struct libfc_function_template qedf_lport_template = { 1561 .frame_send = qedf_xmit, 1562 .fcp_abort_io = qedf_abort_io, 1563 .fcp_cleanup = qedf_fcp_cleanup, 1564 .rport_event_callback = qedf_rport_event_handler, 1565 .elsct_send = qedf_elsct_send, 1566 }; 1567 1568 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf) 1569 { 1570 fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO); 1571 1572 qedf->ctlr.send = qedf_fip_send; 1573 qedf->ctlr.get_src_addr = qedf_get_src_mac; 1574 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac); 1575 } 1576 1577 static void qedf_setup_fdmi(struct qedf_ctx *qedf) 1578 { 1579 struct fc_lport *lport = qedf->lport; 1580 struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host); 1581 u8 buf[8]; 1582 int i, pos; 1583 1584 /* 1585 * fdmi_enabled needs to be set for libfc to execute FDMI registration. 1586 */ 1587 lport->fdmi_enabled = 1; 1588 1589 /* 1590 * Setup the necessary fc_host attributes to that will be used to fill 1591 * in the FDMI information. 1592 */ 1593 1594 /* Get the PCI-e Device Serial Number Capability */ 1595 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN); 1596 if (pos) { 1597 pos += 4; 1598 for (i = 0; i < 8; i++) 1599 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]); 1600 1601 snprintf(fc_host->serial_number, 1602 sizeof(fc_host->serial_number), 1603 "%02X%02X%02X%02X%02X%02X%02X%02X", 1604 buf[7], buf[6], buf[5], buf[4], 1605 buf[3], buf[2], buf[1], buf[0]); 1606 } else 1607 snprintf(fc_host->serial_number, 1608 sizeof(fc_host->serial_number), "Unknown"); 1609 1610 snprintf(fc_host->manufacturer, 1611 sizeof(fc_host->manufacturer), "%s", "Cavium Inc."); 1612 1613 snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000"); 1614 1615 snprintf(fc_host->model_description, sizeof(fc_host->model_description), 1616 "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller" 1617 "(FCoE)"); 1618 1619 snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version), 1620 "Rev %d", qedf->pdev->revision); 1621 1622 snprintf(fc_host->driver_version, sizeof(fc_host->driver_version), 1623 "%s", QEDF_VERSION); 1624 1625 snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version), 1626 "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION, 1627 FW_REVISION_VERSION, FW_ENGINEERING_VERSION); 1628 } 1629 1630 static int qedf_lport_setup(struct qedf_ctx *qedf) 1631 { 1632 struct fc_lport *lport = qedf->lport; 1633 1634 lport->link_up = 0; 1635 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1636 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1637 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1638 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1639 lport->boot_time = jiffies; 1640 lport->e_d_tov = 2 * 1000; 1641 lport->r_a_tov = 10 * 1000; 1642 1643 /* Set NPIV support */ 1644 lport->does_npiv = 1; 1645 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV; 1646 1647 fc_set_wwnn(lport, qedf->wwnn); 1648 fc_set_wwpn(lport, qedf->wwpn); 1649 1650 if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) { 1651 QEDF_ERR(&qedf->dbg_ctx, 1652 "fcoe_libfc_config failed.\n"); 1653 return -ENOMEM; 1654 } 1655 1656 /* Allocate the exchange manager */ 1657 fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS, 1658 0xfffe, NULL); 1659 1660 if (fc_lport_init_stats(lport)) 1661 return -ENOMEM; 1662 1663 /* Finish lport config */ 1664 fc_lport_config(lport); 1665 1666 /* Set max frame size */ 1667 fc_set_mfs(lport, QEDF_MFS); 1668 fc_host_maxframe_size(lport->host) = lport->mfs; 1669 1670 /* Set default dev_loss_tmo based on module parameter */ 1671 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo; 1672 1673 /* Set symbolic node name */ 1674 snprintf(fc_host_symbolic_name(lport->host), 256, 1675 "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION); 1676 1677 qedf_setup_fdmi(qedf); 1678 1679 return 0; 1680 } 1681 1682 /* 1683 * NPIV functions 1684 */ 1685 1686 static int qedf_vport_libfc_config(struct fc_vport *vport, 1687 struct fc_lport *lport) 1688 { 1689 lport->link_up = 0; 1690 lport->qfull = 0; 1691 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; 1692 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; 1693 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 1694 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); 1695 lport->boot_time = jiffies; 1696 lport->e_d_tov = 2 * 1000; 1697 lport->r_a_tov = 10 * 1000; 1698 lport->does_npiv = 1; /* Temporary until we add NPIV support */ 1699 1700 /* Allocate stats for vport */ 1701 if (fc_lport_init_stats(lport)) 1702 return -ENOMEM; 1703 1704 /* Finish lport config */ 1705 fc_lport_config(lport); 1706 1707 /* offload related configuration */ 1708 lport->crc_offload = 0; 1709 lport->seq_offload = 0; 1710 lport->lro_enabled = 0; 1711 lport->lro_xid = 0; 1712 lport->lso_max = 0; 1713 1714 return 0; 1715 } 1716 1717 static int qedf_vport_create(struct fc_vport *vport, bool disabled) 1718 { 1719 struct Scsi_Host *shost = vport_to_shost(vport); 1720 struct fc_lport *n_port = shost_priv(shost); 1721 struct fc_lport *vn_port; 1722 struct qedf_ctx *base_qedf = lport_priv(n_port); 1723 struct qedf_ctx *vport_qedf; 1724 1725 char buf[32]; 1726 int rc = 0; 1727 1728 rc = fcoe_validate_vport_create(vport); 1729 if (rc) { 1730 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1731 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, " 1732 "WWPN (0x%s) already exists.\n", buf); 1733 goto err1; 1734 } 1735 1736 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) { 1737 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport " 1738 "because link is not up.\n"); 1739 rc = -EIO; 1740 goto err1; 1741 } 1742 1743 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx)); 1744 if (!vn_port) { 1745 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport " 1746 "for vport.\n"); 1747 rc = -ENOMEM; 1748 goto err1; 1749 } 1750 1751 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); 1752 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n", 1753 buf); 1754 1755 /* Copy some fields from base_qedf */ 1756 vport_qedf = lport_priv(vn_port); 1757 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx)); 1758 1759 /* Set qedf data specific to this vport */ 1760 vport_qedf->lport = vn_port; 1761 /* Use same hba_lock as base_qedf */ 1762 vport_qedf->hba_lock = base_qedf->hba_lock; 1763 vport_qedf->pdev = base_qedf->pdev; 1764 vport_qedf->cmd_mgr = base_qedf->cmd_mgr; 1765 init_completion(&vport_qedf->flogi_compl); 1766 INIT_LIST_HEAD(&vport_qedf->fcports); 1767 1768 rc = qedf_vport_libfc_config(vport, vn_port); 1769 if (rc) { 1770 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory " 1771 "for lport stats.\n"); 1772 goto err2; 1773 } 1774 1775 fc_set_wwnn(vn_port, vport->node_name); 1776 fc_set_wwpn(vn_port, vport->port_name); 1777 vport_qedf->wwnn = vn_port->wwnn; 1778 vport_qedf->wwpn = vn_port->wwpn; 1779 1780 vn_port->host->transportt = qedf_fc_vport_transport_template; 1781 vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS; 1782 vn_port->host->max_lun = qedf_max_lun; 1783 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD; 1784 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN; 1785 1786 rc = scsi_add_host(vn_port->host, &vport->dev); 1787 if (rc) { 1788 QEDF_WARN(&base_qedf->dbg_ctx, 1789 "Error adding Scsi_Host rc=0x%x.\n", rc); 1790 goto err2; 1791 } 1792 1793 /* Set default dev_loss_tmo based on module parameter */ 1794 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo; 1795 1796 /* Init libfc stuffs */ 1797 memcpy(&vn_port->tt, &qedf_lport_template, 1798 sizeof(qedf_lport_template)); 1799 fc_exch_init(vn_port); 1800 fc_elsct_init(vn_port); 1801 fc_lport_init(vn_port); 1802 fc_disc_init(vn_port); 1803 fc_disc_config(vn_port, vn_port); 1804 1805 1806 /* Allocate the exchange manager */ 1807 shost = vport_to_shost(vport); 1808 n_port = shost_priv(shost); 1809 fc_exch_mgr_list_clone(n_port, vn_port); 1810 1811 /* Set max frame size */ 1812 fc_set_mfs(vn_port, QEDF_MFS); 1813 1814 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN; 1815 1816 if (disabled) { 1817 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1818 } else { 1819 vn_port->boot_time = jiffies; 1820 fc_fabric_login(vn_port); 1821 fc_vport_setlink(vn_port); 1822 } 1823 1824 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n", 1825 vn_port); 1826 1827 /* Set up debug context for vport */ 1828 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no; 1829 vport_qedf->dbg_ctx.pdev = base_qedf->pdev; 1830 1831 err2: 1832 scsi_host_put(vn_port->host); 1833 err1: 1834 return rc; 1835 } 1836 1837 static int qedf_vport_destroy(struct fc_vport *vport) 1838 { 1839 struct Scsi_Host *shost = vport_to_shost(vport); 1840 struct fc_lport *n_port = shost_priv(shost); 1841 struct fc_lport *vn_port = vport->dd_data; 1842 struct qedf_ctx *qedf = lport_priv(vn_port); 1843 1844 if (!qedf) { 1845 QEDF_ERR(NULL, "qedf is NULL.\n"); 1846 goto out; 1847 } 1848 1849 /* Set unloading bit on vport qedf_ctx to prevent more I/O */ 1850 set_bit(QEDF_UNLOADING, &qedf->flags); 1851 1852 mutex_lock(&n_port->lp_mutex); 1853 list_del(&vn_port->list); 1854 mutex_unlock(&n_port->lp_mutex); 1855 1856 fc_fabric_logoff(vn_port); 1857 fc_lport_destroy(vn_port); 1858 1859 /* Detach from scsi-ml */ 1860 fc_remove_host(vn_port->host); 1861 scsi_remove_host(vn_port->host); 1862 1863 /* 1864 * Only try to release the exchange manager if the vn_port 1865 * configuration is complete. 1866 */ 1867 if (vn_port->state == LPORT_ST_READY) 1868 fc_exch_mgr_free(vn_port); 1869 1870 /* Free memory used by statistical counters */ 1871 fc_lport_free_stats(vn_port); 1872 1873 /* Release Scsi_Host */ 1874 if (vn_port->host) 1875 scsi_host_put(vn_port->host); 1876 1877 out: 1878 return 0; 1879 } 1880 1881 static int qedf_vport_disable(struct fc_vport *vport, bool disable) 1882 { 1883 struct fc_lport *lport = vport->dd_data; 1884 1885 if (disable) { 1886 fc_vport_set_state(vport, FC_VPORT_DISABLED); 1887 fc_fabric_logoff(lport); 1888 } else { 1889 lport->boot_time = jiffies; 1890 fc_fabric_login(lport); 1891 fc_vport_setlink(lport); 1892 } 1893 return 0; 1894 } 1895 1896 /* 1897 * During removal we need to wait for all the vports associated with a port 1898 * to be destroyed so we avoid a race condition where libfc is still trying 1899 * to reap vports while the driver remove function has already reaped the 1900 * driver contexts associated with the physical port. 1901 */ 1902 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf) 1903 { 1904 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host); 1905 1906 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 1907 "Entered.\n"); 1908 while (fc_host->npiv_vports_inuse > 0) { 1909 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, 1910 "Waiting for all vports to be reaped.\n"); 1911 msleep(1000); 1912 } 1913 } 1914 1915 /** 1916 * qedf_fcoe_reset - Resets the fcoe 1917 * 1918 * @shost: shost the reset is from 1919 * 1920 * Returns: always 0 1921 */ 1922 static int qedf_fcoe_reset(struct Scsi_Host *shost) 1923 { 1924 struct fc_lport *lport = shost_priv(shost); 1925 1926 qedf_ctx_soft_reset(lport); 1927 return 0; 1928 } 1929 1930 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host 1931 *shost) 1932 { 1933 struct fc_host_statistics *qedf_stats; 1934 struct fc_lport *lport = shost_priv(shost); 1935 struct qedf_ctx *qedf = lport_priv(lport); 1936 struct qed_fcoe_stats *fw_fcoe_stats; 1937 1938 qedf_stats = fc_get_host_stats(shost); 1939 1940 /* We don't collect offload stats for specific NPIV ports */ 1941 if (lport->vport) 1942 goto out; 1943 1944 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL); 1945 if (!fw_fcoe_stats) { 1946 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for " 1947 "fw_fcoe_stats.\n"); 1948 goto out; 1949 } 1950 1951 mutex_lock(&qedf->stats_mutex); 1952 1953 /* Query firmware for offload stats */ 1954 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats); 1955 1956 /* 1957 * The expectation is that we add our offload stats to the stats 1958 * being maintained by libfc each time the fc_get_host_status callback 1959 * is invoked. The additions are not carried over for each call to 1960 * the fc_get_host_stats callback. 1961 */ 1962 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt + 1963 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt + 1964 fw_fcoe_stats->fcoe_tx_other_pkt_cnt; 1965 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt + 1966 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt + 1967 fw_fcoe_stats->fcoe_rx_other_pkt_cnt; 1968 qedf_stats->fcp_input_megabytes += 1969 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000); 1970 qedf_stats->fcp_output_megabytes += 1971 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000); 1972 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4; 1973 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4; 1974 qedf_stats->invalid_crc_count += 1975 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt; 1976 qedf_stats->dumped_frames = 1977 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 1978 qedf_stats->error_frames += 1979 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; 1980 qedf_stats->fcp_input_requests += qedf->input_requests; 1981 qedf_stats->fcp_output_requests += qedf->output_requests; 1982 qedf_stats->fcp_control_requests += qedf->control_requests; 1983 qedf_stats->fcp_packet_aborts += qedf->packet_aborts; 1984 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures; 1985 1986 mutex_unlock(&qedf->stats_mutex); 1987 kfree(fw_fcoe_stats); 1988 out: 1989 return qedf_stats; 1990 } 1991 1992 static struct fc_function_template qedf_fc_transport_fn = { 1993 .show_host_node_name = 1, 1994 .show_host_port_name = 1, 1995 .show_host_supported_classes = 1, 1996 .show_host_supported_fc4s = 1, 1997 .show_host_active_fc4s = 1, 1998 .show_host_maxframe_size = 1, 1999 2000 .show_host_port_id = 1, 2001 .show_host_supported_speeds = 1, 2002 .get_host_speed = fc_get_host_speed, 2003 .show_host_speed = 1, 2004 .show_host_port_type = 1, 2005 .get_host_port_state = fc_get_host_port_state, 2006 .show_host_port_state = 1, 2007 .show_host_symbolic_name = 1, 2008 2009 /* 2010 * Tell FC transport to allocate enough space to store the backpointer 2011 * for the associate qedf_rport struct. 2012 */ 2013 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2014 sizeof(struct qedf_rport)), 2015 .show_rport_maxframe_size = 1, 2016 .show_rport_supported_classes = 1, 2017 .show_host_fabric_name = 1, 2018 .show_starget_node_name = 1, 2019 .show_starget_port_name = 1, 2020 .show_starget_port_id = 1, 2021 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2022 .show_rport_dev_loss_tmo = 1, 2023 .get_fc_host_stats = qedf_fc_get_host_stats, 2024 .issue_fc_host_lip = qedf_fcoe_reset, 2025 .vport_create = qedf_vport_create, 2026 .vport_delete = qedf_vport_destroy, 2027 .vport_disable = qedf_vport_disable, 2028 .bsg_request = fc_lport_bsg_request, 2029 }; 2030 2031 static struct fc_function_template qedf_fc_vport_transport_fn = { 2032 .show_host_node_name = 1, 2033 .show_host_port_name = 1, 2034 .show_host_supported_classes = 1, 2035 .show_host_supported_fc4s = 1, 2036 .show_host_active_fc4s = 1, 2037 .show_host_maxframe_size = 1, 2038 .show_host_port_id = 1, 2039 .show_host_supported_speeds = 1, 2040 .get_host_speed = fc_get_host_speed, 2041 .show_host_speed = 1, 2042 .show_host_port_type = 1, 2043 .get_host_port_state = fc_get_host_port_state, 2044 .show_host_port_state = 1, 2045 .show_host_symbolic_name = 1, 2046 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + 2047 sizeof(struct qedf_rport)), 2048 .show_rport_maxframe_size = 1, 2049 .show_rport_supported_classes = 1, 2050 .show_host_fabric_name = 1, 2051 .show_starget_node_name = 1, 2052 .show_starget_port_name = 1, 2053 .show_starget_port_id = 1, 2054 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, 2055 .show_rport_dev_loss_tmo = 1, 2056 .get_fc_host_stats = fc_get_host_stats, 2057 .issue_fc_host_lip = qedf_fcoe_reset, 2058 .bsg_request = fc_lport_bsg_request, 2059 }; 2060 2061 static bool qedf_fp_has_work(struct qedf_fastpath *fp) 2062 { 2063 struct qedf_ctx *qedf = fp->qedf; 2064 struct global_queue *que; 2065 struct qed_sb_info *sb_info = fp->sb_info; 2066 struct status_block_e4 *sb = sb_info->sb_virt; 2067 u16 prod_idx; 2068 2069 /* Get the pointer to the global CQ this completion is on */ 2070 que = qedf->global_queues[fp->sb_id]; 2071 2072 /* Be sure all responses have been written to PI */ 2073 rmb(); 2074 2075 /* Get the current firmware producer index */ 2076 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2077 2078 return (que->cq_prod_idx != prod_idx); 2079 } 2080 2081 /* 2082 * Interrupt handler code. 2083 */ 2084 2085 /* Process completion queue and copy CQE contents for deferred processesing 2086 * 2087 * Return true if we should wake the I/O thread, false if not. 2088 */ 2089 static bool qedf_process_completions(struct qedf_fastpath *fp) 2090 { 2091 struct qedf_ctx *qedf = fp->qedf; 2092 struct qed_sb_info *sb_info = fp->sb_info; 2093 struct status_block_e4 *sb = sb_info->sb_virt; 2094 struct global_queue *que; 2095 u16 prod_idx; 2096 struct fcoe_cqe *cqe; 2097 struct qedf_io_work *io_work; 2098 int num_handled = 0; 2099 unsigned int cpu; 2100 struct qedf_ioreq *io_req = NULL; 2101 u16 xid; 2102 u16 new_cqes; 2103 u32 comp_type; 2104 2105 /* Get the current firmware producer index */ 2106 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; 2107 2108 /* Get the pointer to the global CQ this completion is on */ 2109 que = qedf->global_queues[fp->sb_id]; 2110 2111 /* Calculate the amount of new elements since last processing */ 2112 new_cqes = (prod_idx >= que->cq_prod_idx) ? 2113 (prod_idx - que->cq_prod_idx) : 2114 0x10000 - que->cq_prod_idx + prod_idx; 2115 2116 /* Save producer index */ 2117 que->cq_prod_idx = prod_idx; 2118 2119 while (new_cqes) { 2120 fp->completions++; 2121 num_handled++; 2122 cqe = &que->cq[que->cq_cons_idx]; 2123 2124 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2125 FCOE_CQE_CQE_TYPE_MASK; 2126 2127 /* 2128 * Process unsolicited CQEs directly in the interrupt handler 2129 * sine we need the fastpath ID 2130 */ 2131 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) { 2132 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL, 2133 "Unsolicated CQE.\n"); 2134 qedf_process_unsol_compl(qedf, fp->sb_id, cqe); 2135 /* 2136 * Don't add a work list item. Increment consumer 2137 * consumer index and move on. 2138 */ 2139 goto inc_idx; 2140 } 2141 2142 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2143 io_req = &qedf->cmd_mgr->cmds[xid]; 2144 2145 /* 2146 * Figure out which percpu thread we should queue this I/O 2147 * on. 2148 */ 2149 if (!io_req) 2150 /* If there is not io_req assocated with this CQE 2151 * just queue it on CPU 0 2152 */ 2153 cpu = 0; 2154 else { 2155 cpu = io_req->cpu; 2156 io_req->int_cpu = smp_processor_id(); 2157 } 2158 2159 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC); 2160 if (!io_work) { 2161 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate " 2162 "work for I/O completion.\n"); 2163 continue; 2164 } 2165 memset(io_work, 0, sizeof(struct qedf_io_work)); 2166 2167 INIT_WORK(&io_work->work, qedf_fp_io_handler); 2168 2169 /* Copy contents of CQE for deferred processing */ 2170 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe)); 2171 2172 io_work->qedf = fp->qedf; 2173 io_work->fp = NULL; /* Only used for unsolicited frames */ 2174 2175 queue_work_on(cpu, qedf_io_wq, &io_work->work); 2176 2177 inc_idx: 2178 que->cq_cons_idx++; 2179 if (que->cq_cons_idx == fp->cq_num_entries) 2180 que->cq_cons_idx = 0; 2181 new_cqes--; 2182 } 2183 2184 return true; 2185 } 2186 2187 2188 /* MSI-X fastpath handler code */ 2189 static irqreturn_t qedf_msix_handler(int irq, void *dev_id) 2190 { 2191 struct qedf_fastpath *fp = dev_id; 2192 2193 if (!fp) { 2194 QEDF_ERR(NULL, "fp is null.\n"); 2195 return IRQ_HANDLED; 2196 } 2197 if (!fp->sb_info) { 2198 QEDF_ERR(NULL, "fp->sb_info in null."); 2199 return IRQ_HANDLED; 2200 } 2201 2202 /* 2203 * Disable interrupts for this status block while we process new 2204 * completions 2205 */ 2206 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/); 2207 2208 while (1) { 2209 qedf_process_completions(fp); 2210 2211 if (qedf_fp_has_work(fp) == 0) { 2212 /* Update the sb information */ 2213 qed_sb_update_sb_idx(fp->sb_info); 2214 2215 /* Check for more work */ 2216 rmb(); 2217 2218 if (qedf_fp_has_work(fp) == 0) { 2219 /* Re-enable interrupts */ 2220 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 2221 return IRQ_HANDLED; 2222 } 2223 } 2224 } 2225 2226 /* Do we ever want to break out of above loop? */ 2227 return IRQ_HANDLED; 2228 } 2229 2230 /* simd handler for MSI/INTa */ 2231 static void qedf_simd_int_handler(void *cookie) 2232 { 2233 /* Cookie is qedf_ctx struct */ 2234 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2235 2236 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf); 2237 } 2238 2239 #define QEDF_SIMD_HANDLER_NUM 0 2240 static void qedf_sync_free_irqs(struct qedf_ctx *qedf) 2241 { 2242 int i; 2243 u16 vector_idx = 0; 2244 u32 vector; 2245 2246 if (qedf->int_info.msix_cnt) { 2247 for (i = 0; i < qedf->int_info.used_cnt; i++) { 2248 vector_idx = i * qedf->dev_info.common.num_hwfns + 2249 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2250 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2251 "Freeing IRQ #%d vector_idx=%d.\n", 2252 i, vector_idx); 2253 vector = qedf->int_info.msix[vector_idx].vector; 2254 synchronize_irq(vector); 2255 irq_set_affinity_hint(vector, NULL); 2256 irq_set_affinity_notifier(vector, NULL); 2257 free_irq(vector, &qedf->fp_array[i]); 2258 } 2259 } else 2260 qed_ops->common->simd_handler_clean(qedf->cdev, 2261 QEDF_SIMD_HANDLER_NUM); 2262 2263 qedf->int_info.used_cnt = 0; 2264 qed_ops->common->set_fp_int(qedf->cdev, 0); 2265 } 2266 2267 static int qedf_request_msix_irq(struct qedf_ctx *qedf) 2268 { 2269 int i, rc, cpu; 2270 u16 vector_idx = 0; 2271 u32 vector; 2272 2273 cpu = cpumask_first(cpu_online_mask); 2274 for (i = 0; i < qedf->num_queues; i++) { 2275 vector_idx = i * qedf->dev_info.common.num_hwfns + 2276 qed_ops->common->get_affin_hwfn_idx(qedf->cdev); 2277 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 2278 "Requesting IRQ #%d vector_idx=%d.\n", 2279 i, vector_idx); 2280 vector = qedf->int_info.msix[vector_idx].vector; 2281 rc = request_irq(vector, qedf_msix_handler, 0, "qedf", 2282 &qedf->fp_array[i]); 2283 2284 if (rc) { 2285 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n"); 2286 qedf_sync_free_irqs(qedf); 2287 return rc; 2288 } 2289 2290 qedf->int_info.used_cnt++; 2291 rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu)); 2292 cpu = cpumask_next(cpu, cpu_online_mask); 2293 } 2294 2295 return 0; 2296 } 2297 2298 static int qedf_setup_int(struct qedf_ctx *qedf) 2299 { 2300 int rc = 0; 2301 2302 /* 2303 * Learn interrupt configuration 2304 */ 2305 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus()); 2306 if (rc <= 0) 2307 return 0; 2308 2309 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info); 2310 if (rc) 2311 return 0; 2312 2313 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = " 2314 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt, 2315 num_online_cpus()); 2316 2317 if (qedf->int_info.msix_cnt) 2318 return qedf_request_msix_irq(qedf); 2319 2320 qed_ops->common->simd_handler_config(qedf->cdev, &qedf, 2321 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler); 2322 qedf->int_info.used_cnt = 1; 2323 2324 QEDF_ERR(&qedf->dbg_ctx, 2325 "Cannot load driver due to a lack of MSI-X vectors.\n"); 2326 return -EINVAL; 2327 } 2328 2329 /* Main function for libfc frame reception */ 2330 static void qedf_recv_frame(struct qedf_ctx *qedf, 2331 struct sk_buff *skb) 2332 { 2333 u32 fr_len; 2334 struct fc_lport *lport; 2335 struct fc_frame_header *fh; 2336 struct fcoe_crc_eof crc_eof; 2337 struct fc_frame *fp; 2338 u8 *mac = NULL; 2339 u8 *dest_mac = NULL; 2340 struct fcoe_hdr *hp; 2341 struct qedf_rport *fcport; 2342 struct fc_lport *vn_port; 2343 u32 f_ctl; 2344 2345 lport = qedf->lport; 2346 if (lport == NULL || lport->state == LPORT_ST_DISABLED) { 2347 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n"); 2348 kfree_skb(skb); 2349 return; 2350 } 2351 2352 if (skb_is_nonlinear(skb)) 2353 skb_linearize(skb); 2354 mac = eth_hdr(skb)->h_source; 2355 dest_mac = eth_hdr(skb)->h_dest; 2356 2357 /* Pull the header */ 2358 hp = (struct fcoe_hdr *)skb->data; 2359 fh = (struct fc_frame_header *) skb_transport_header(skb); 2360 skb_pull(skb, sizeof(struct fcoe_hdr)); 2361 fr_len = skb->len - sizeof(struct fcoe_crc_eof); 2362 2363 fp = (struct fc_frame *)skb; 2364 fc_frame_init(fp); 2365 fr_dev(fp) = lport; 2366 fr_sof(fp) = hp->fcoe_sof; 2367 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { 2368 QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n"); 2369 kfree_skb(skb); 2370 return; 2371 } 2372 fr_eof(fp) = crc_eof.fcoe_eof; 2373 fr_crc(fp) = crc_eof.fcoe_crc32; 2374 if (pskb_trim(skb, fr_len)) { 2375 QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n"); 2376 kfree_skb(skb); 2377 return; 2378 } 2379 2380 fh = fc_frame_header_get(fp); 2381 2382 /* 2383 * Invalid frame filters. 2384 */ 2385 2386 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && 2387 fh->fh_type == FC_TYPE_FCP) { 2388 /* Drop FCP data. We dont this in L2 path */ 2389 kfree_skb(skb); 2390 return; 2391 } 2392 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && 2393 fh->fh_type == FC_TYPE_ELS) { 2394 switch (fc_frame_payload_op(fp)) { 2395 case ELS_LOGO: 2396 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { 2397 /* drop non-FIP LOGO */ 2398 kfree_skb(skb); 2399 return; 2400 } 2401 break; 2402 } 2403 } 2404 2405 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { 2406 /* Drop incoming ABTS */ 2407 kfree_skb(skb); 2408 return; 2409 } 2410 2411 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { 2412 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2413 "FC frame d_id mismatch with MAC %pM.\n", dest_mac); 2414 kfree_skb(skb); 2415 return; 2416 } 2417 2418 if (qedf->ctlr.state) { 2419 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) { 2420 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2421 "Wrong source address: mac:%pM dest_addr:%pM.\n", 2422 mac, qedf->ctlr.dest_addr); 2423 kfree_skb(skb); 2424 return; 2425 } 2426 } 2427 2428 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); 2429 2430 /* 2431 * If the destination ID from the frame header does not match what we 2432 * have on record for lport and the search for a NPIV port came up 2433 * empty then this is not addressed to our port so simply drop it. 2434 */ 2435 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { 2436 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2437 "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n", 2438 lport->port_id, ntoh24(fh->fh_d_id)); 2439 kfree_skb(skb); 2440 return; 2441 } 2442 2443 f_ctl = ntoh24(fh->fh_f_ctl); 2444 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) && 2445 (f_ctl & FC_FC_EX_CTX)) { 2446 /* Drop incoming ABTS response that has both SEQ/EX CTX set */ 2447 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2448 "Dropping ABTS response as both SEQ/EX CTX set.\n"); 2449 kfree_skb(skb); 2450 return; 2451 } 2452 2453 /* 2454 * If a connection is uploading, drop incoming FCoE frames as there 2455 * is a small window where we could try to return a frame while libfc 2456 * is trying to clean things up. 2457 */ 2458 2459 /* Get fcport associated with d_id if it exists */ 2460 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); 2461 2462 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION, 2463 &fcport->flags)) { 2464 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, 2465 "Connection uploading, dropping fp=%p.\n", fp); 2466 kfree_skb(skb); 2467 return; 2468 } 2469 2470 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: " 2471 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp, 2472 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, 2473 fh->fh_type); 2474 if (qedf_dump_frames) 2475 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 2476 1, skb->data, skb->len, false); 2477 fc_exch_recv(lport, fp); 2478 } 2479 2480 static void qedf_ll2_process_skb(struct work_struct *work) 2481 { 2482 struct qedf_skb_work *skb_work = 2483 container_of(work, struct qedf_skb_work, work); 2484 struct qedf_ctx *qedf = skb_work->qedf; 2485 struct sk_buff *skb = skb_work->skb; 2486 struct ethhdr *eh; 2487 2488 if (!qedf) { 2489 QEDF_ERR(NULL, "qedf is NULL\n"); 2490 goto err_out; 2491 } 2492 2493 eh = (struct ethhdr *)skb->data; 2494 2495 /* Undo VLAN encapsulation */ 2496 if (eh->h_proto == htons(ETH_P_8021Q)) { 2497 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); 2498 eh = skb_pull(skb, VLAN_HLEN); 2499 skb_reset_mac_header(skb); 2500 } 2501 2502 /* 2503 * Process either a FIP frame or FCoE frame based on the 2504 * protocol value. If it's not either just drop the 2505 * frame. 2506 */ 2507 if (eh->h_proto == htons(ETH_P_FIP)) { 2508 qedf_fip_recv(qedf, skb); 2509 goto out; 2510 } else if (eh->h_proto == htons(ETH_P_FCOE)) { 2511 __skb_pull(skb, ETH_HLEN); 2512 qedf_recv_frame(qedf, skb); 2513 goto out; 2514 } else 2515 goto err_out; 2516 2517 err_out: 2518 kfree_skb(skb); 2519 out: 2520 kfree(skb_work); 2521 return; 2522 } 2523 2524 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb, 2525 u32 arg1, u32 arg2) 2526 { 2527 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; 2528 struct qedf_skb_work *skb_work; 2529 2530 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { 2531 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, 2532 "Dropping frame as link state is down.\n"); 2533 kfree_skb(skb); 2534 return 0; 2535 } 2536 2537 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC); 2538 if (!skb_work) { 2539 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so " 2540 "dropping frame.\n"); 2541 kfree_skb(skb); 2542 return 0; 2543 } 2544 2545 INIT_WORK(&skb_work->work, qedf_ll2_process_skb); 2546 skb_work->skb = skb; 2547 skb_work->qedf = qedf; 2548 queue_work(qedf->ll2_recv_wq, &skb_work->work); 2549 2550 return 0; 2551 } 2552 2553 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = { 2554 .rx_cb = qedf_ll2_rx, 2555 .tx_cb = NULL, 2556 }; 2557 2558 /* Main thread to process I/O completions */ 2559 void qedf_fp_io_handler(struct work_struct *work) 2560 { 2561 struct qedf_io_work *io_work = 2562 container_of(work, struct qedf_io_work, work); 2563 u32 comp_type; 2564 2565 /* 2566 * Deferred part of unsolicited CQE sends 2567 * frame to libfc. 2568 */ 2569 comp_type = (io_work->cqe.cqe_data >> 2570 FCOE_CQE_CQE_TYPE_SHIFT) & 2571 FCOE_CQE_CQE_TYPE_MASK; 2572 if (comp_type == FCOE_UNSOLIC_CQE_TYPE && 2573 io_work->fp) 2574 fc_exch_recv(io_work->qedf->lport, io_work->fp); 2575 else 2576 qedf_process_cqe(io_work->qedf, &io_work->cqe); 2577 2578 kfree(io_work); 2579 } 2580 2581 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf, 2582 struct qed_sb_info *sb_info, u16 sb_id) 2583 { 2584 struct status_block_e4 *sb_virt; 2585 dma_addr_t sb_phys; 2586 int ret; 2587 2588 sb_virt = dma_alloc_coherent(&qedf->pdev->dev, 2589 sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL); 2590 2591 if (!sb_virt) { 2592 QEDF_ERR(&qedf->dbg_ctx, 2593 "Status block allocation failed for id = %d.\n", 2594 sb_id); 2595 return -ENOMEM; 2596 } 2597 2598 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys, 2599 sb_id, QED_SB_TYPE_STORAGE); 2600 2601 if (ret) { 2602 QEDF_ERR(&qedf->dbg_ctx, 2603 "Status block initialization failed (0x%x) for id = %d.\n", 2604 ret, sb_id); 2605 return ret; 2606 } 2607 2608 return 0; 2609 } 2610 2611 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info) 2612 { 2613 if (sb_info->sb_virt) 2614 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt), 2615 (void *)sb_info->sb_virt, sb_info->sb_phys); 2616 } 2617 2618 static void qedf_destroy_sb(struct qedf_ctx *qedf) 2619 { 2620 int id; 2621 struct qedf_fastpath *fp = NULL; 2622 2623 for (id = 0; id < qedf->num_queues; id++) { 2624 fp = &(qedf->fp_array[id]); 2625 if (fp->sb_id == QEDF_SB_ID_NULL) 2626 break; 2627 qedf_free_sb(qedf, fp->sb_info); 2628 kfree(fp->sb_info); 2629 } 2630 kfree(qedf->fp_array); 2631 } 2632 2633 static int qedf_prepare_sb(struct qedf_ctx *qedf) 2634 { 2635 int id; 2636 struct qedf_fastpath *fp; 2637 int ret; 2638 2639 qedf->fp_array = 2640 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath), 2641 GFP_KERNEL); 2642 2643 if (!qedf->fp_array) { 2644 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation " 2645 "failed.\n"); 2646 return -ENOMEM; 2647 } 2648 2649 for (id = 0; id < qedf->num_queues; id++) { 2650 fp = &(qedf->fp_array[id]); 2651 fp->sb_id = QEDF_SB_ID_NULL; 2652 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL); 2653 if (!fp->sb_info) { 2654 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct " 2655 "allocation failed.\n"); 2656 goto err; 2657 } 2658 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id); 2659 if (ret) { 2660 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and " 2661 "initialization failed.\n"); 2662 goto err; 2663 } 2664 fp->sb_id = id; 2665 fp->qedf = qedf; 2666 fp->cq_num_entries = 2667 qedf->global_queues[id]->cq_mem_size / 2668 sizeof(struct fcoe_cqe); 2669 } 2670 err: 2671 return 0; 2672 } 2673 2674 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe) 2675 { 2676 u16 xid; 2677 struct qedf_ioreq *io_req; 2678 struct qedf_rport *fcport; 2679 u32 comp_type; 2680 2681 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & 2682 FCOE_CQE_CQE_TYPE_MASK; 2683 2684 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; 2685 io_req = &qedf->cmd_mgr->cmds[xid]; 2686 2687 /* Completion not for a valid I/O anymore so just return */ 2688 if (!io_req) { 2689 QEDF_ERR(&qedf->dbg_ctx, 2690 "io_req is NULL for xid=0x%x.\n", xid); 2691 return; 2692 } 2693 2694 fcport = io_req->fcport; 2695 2696 if (fcport == NULL) { 2697 QEDF_ERR(&qedf->dbg_ctx, 2698 "fcport is NULL for xid=0x%x io_req=%p.\n", 2699 xid, io_req); 2700 return; 2701 } 2702 2703 /* 2704 * Check that fcport is offloaded. If it isn't then the spinlock 2705 * isn't valid and shouldn't be taken. We should just return. 2706 */ 2707 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 2708 QEDF_ERR(&qedf->dbg_ctx, 2709 "Session not offloaded yet, fcport = %p.\n", fcport); 2710 return; 2711 } 2712 2713 2714 switch (comp_type) { 2715 case FCOE_GOOD_COMPLETION_CQE_TYPE: 2716 atomic_inc(&fcport->free_sqes); 2717 switch (io_req->cmd_type) { 2718 case QEDF_SCSI_CMD: 2719 qedf_scsi_completion(qedf, cqe, io_req); 2720 break; 2721 case QEDF_ELS: 2722 qedf_process_els_compl(qedf, cqe, io_req); 2723 break; 2724 case QEDF_TASK_MGMT_CMD: 2725 qedf_process_tmf_compl(qedf, cqe, io_req); 2726 break; 2727 case QEDF_SEQ_CLEANUP: 2728 qedf_process_seq_cleanup_compl(qedf, cqe, io_req); 2729 break; 2730 } 2731 break; 2732 case FCOE_ERROR_DETECTION_CQE_TYPE: 2733 atomic_inc(&fcport->free_sqes); 2734 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2735 "Error detect CQE.\n"); 2736 qedf_process_error_detect(qedf, cqe, io_req); 2737 break; 2738 case FCOE_EXCH_CLEANUP_CQE_TYPE: 2739 atomic_inc(&fcport->free_sqes); 2740 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2741 "Cleanup CQE.\n"); 2742 qedf_process_cleanup_compl(qedf, cqe, io_req); 2743 break; 2744 case FCOE_ABTS_CQE_TYPE: 2745 atomic_inc(&fcport->free_sqes); 2746 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2747 "Abort CQE.\n"); 2748 qedf_process_abts_compl(qedf, cqe, io_req); 2749 break; 2750 case FCOE_DUMMY_CQE_TYPE: 2751 atomic_inc(&fcport->free_sqes); 2752 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2753 "Dummy CQE.\n"); 2754 break; 2755 case FCOE_LOCAL_COMP_CQE_TYPE: 2756 atomic_inc(&fcport->free_sqes); 2757 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2758 "Local completion CQE.\n"); 2759 break; 2760 case FCOE_WARNING_CQE_TYPE: 2761 atomic_inc(&fcport->free_sqes); 2762 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2763 "Warning CQE.\n"); 2764 qedf_process_warning_compl(qedf, cqe, io_req); 2765 break; 2766 case MAX_FCOE_CQE_TYPE: 2767 atomic_inc(&fcport->free_sqes); 2768 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2769 "Max FCoE CQE.\n"); 2770 break; 2771 default: 2772 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, 2773 "Default CQE.\n"); 2774 break; 2775 } 2776 } 2777 2778 static void qedf_free_bdq(struct qedf_ctx *qedf) 2779 { 2780 int i; 2781 2782 if (qedf->bdq_pbl_list) 2783 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE, 2784 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma); 2785 2786 if (qedf->bdq_pbl) 2787 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size, 2788 qedf->bdq_pbl, qedf->bdq_pbl_dma); 2789 2790 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2791 if (qedf->bdq[i].buf_addr) { 2792 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE, 2793 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma); 2794 } 2795 } 2796 } 2797 2798 static void qedf_free_global_queues(struct qedf_ctx *qedf) 2799 { 2800 int i; 2801 struct global_queue **gl = qedf->global_queues; 2802 2803 for (i = 0; i < qedf->num_queues; i++) { 2804 if (!gl[i]) 2805 continue; 2806 2807 if (gl[i]->cq) 2808 dma_free_coherent(&qedf->pdev->dev, 2809 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma); 2810 if (gl[i]->cq_pbl) 2811 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size, 2812 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 2813 2814 kfree(gl[i]); 2815 } 2816 2817 qedf_free_bdq(qedf); 2818 } 2819 2820 static int qedf_alloc_bdq(struct qedf_ctx *qedf) 2821 { 2822 int i; 2823 struct scsi_bd *pbl; 2824 u64 *list; 2825 dma_addr_t page; 2826 2827 /* Alloc dma memory for BDQ buffers */ 2828 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2829 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev, 2830 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL); 2831 if (!qedf->bdq[i].buf_addr) { 2832 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ " 2833 "buffer %d.\n", i); 2834 return -ENOMEM; 2835 } 2836 } 2837 2838 /* Alloc dma memory for BDQ page buffer list */ 2839 qedf->bdq_pbl_mem_size = 2840 QEDF_BDQ_SIZE * sizeof(struct scsi_bd); 2841 qedf->bdq_pbl_mem_size = 2842 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE); 2843 2844 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev, 2845 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL); 2846 if (!qedf->bdq_pbl) { 2847 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n"); 2848 return -ENOMEM; 2849 } 2850 2851 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2852 "BDQ PBL addr=0x%p dma=%pad\n", 2853 qedf->bdq_pbl, &qedf->bdq_pbl_dma); 2854 2855 /* 2856 * Populate BDQ PBL with physical and virtual address of individual 2857 * BDQ buffers 2858 */ 2859 pbl = (struct scsi_bd *)qedf->bdq_pbl; 2860 for (i = 0; i < QEDF_BDQ_SIZE; i++) { 2861 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma)); 2862 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma)); 2863 pbl->opaque.fcoe_opaque.hi = 0; 2864 /* Opaque lo data is an index into the BDQ array */ 2865 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i); 2866 pbl++; 2867 } 2868 2869 /* Allocate list of PBL pages */ 2870 qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev, 2871 QEDF_PAGE_SIZE, 2872 &qedf->bdq_pbl_list_dma, 2873 GFP_KERNEL); 2874 if (!qedf->bdq_pbl_list) { 2875 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n"); 2876 return -ENOMEM; 2877 } 2878 2879 /* 2880 * Now populate PBL list with pages that contain pointers to the 2881 * individual buffers. 2882 */ 2883 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size / 2884 QEDF_PAGE_SIZE; 2885 list = (u64 *)qedf->bdq_pbl_list; 2886 page = qedf->bdq_pbl_list_dma; 2887 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) { 2888 *list = qedf->bdq_pbl_dma; 2889 list++; 2890 page += QEDF_PAGE_SIZE; 2891 } 2892 2893 return 0; 2894 } 2895 2896 static int qedf_alloc_global_queues(struct qedf_ctx *qedf) 2897 { 2898 u32 *list; 2899 int i; 2900 int status = 0, rc; 2901 u32 *pbl; 2902 dma_addr_t page; 2903 int num_pages; 2904 2905 /* Allocate and map CQs, RQs */ 2906 /* 2907 * Number of global queues (CQ / RQ). This should 2908 * be <= number of available MSIX vectors for the PF 2909 */ 2910 if (!qedf->num_queues) { 2911 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n"); 2912 return 1; 2913 } 2914 2915 /* 2916 * Make sure we allocated the PBL that will contain the physical 2917 * addresses of our queues 2918 */ 2919 if (!qedf->p_cpuq) { 2920 status = 1; 2921 QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n"); 2922 goto mem_alloc_failure; 2923 } 2924 2925 qedf->global_queues = kzalloc((sizeof(struct global_queue *) 2926 * qedf->num_queues), GFP_KERNEL); 2927 if (!qedf->global_queues) { 2928 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global " 2929 "queues array ptr memory\n"); 2930 return -ENOMEM; 2931 } 2932 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 2933 "qedf->global_queues=%p.\n", qedf->global_queues); 2934 2935 /* Allocate DMA coherent buffers for BDQ */ 2936 rc = qedf_alloc_bdq(qedf); 2937 if (rc) { 2938 QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n"); 2939 goto mem_alloc_failure; 2940 } 2941 2942 /* Allocate a CQ and an associated PBL for each MSI-X vector */ 2943 for (i = 0; i < qedf->num_queues; i++) { 2944 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue), 2945 GFP_KERNEL); 2946 if (!qedf->global_queues[i]) { 2947 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate " 2948 "global queue %d.\n", i); 2949 status = -ENOMEM; 2950 goto mem_alloc_failure; 2951 } 2952 2953 qedf->global_queues[i]->cq_mem_size = 2954 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 2955 qedf->global_queues[i]->cq_mem_size = 2956 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE); 2957 2958 qedf->global_queues[i]->cq_pbl_size = 2959 (qedf->global_queues[i]->cq_mem_size / 2960 PAGE_SIZE) * sizeof(void *); 2961 qedf->global_queues[i]->cq_pbl_size = 2962 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE); 2963 2964 qedf->global_queues[i]->cq = 2965 dma_alloc_coherent(&qedf->pdev->dev, 2966 qedf->global_queues[i]->cq_mem_size, 2967 &qedf->global_queues[i]->cq_dma, 2968 GFP_KERNEL); 2969 2970 if (!qedf->global_queues[i]->cq) { 2971 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n"); 2972 status = -ENOMEM; 2973 goto mem_alloc_failure; 2974 } 2975 2976 qedf->global_queues[i]->cq_pbl = 2977 dma_alloc_coherent(&qedf->pdev->dev, 2978 qedf->global_queues[i]->cq_pbl_size, 2979 &qedf->global_queues[i]->cq_pbl_dma, 2980 GFP_KERNEL); 2981 2982 if (!qedf->global_queues[i]->cq_pbl) { 2983 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n"); 2984 status = -ENOMEM; 2985 goto mem_alloc_failure; 2986 } 2987 2988 /* Create PBL */ 2989 num_pages = qedf->global_queues[i]->cq_mem_size / 2990 QEDF_PAGE_SIZE; 2991 page = qedf->global_queues[i]->cq_dma; 2992 pbl = (u32 *)qedf->global_queues[i]->cq_pbl; 2993 2994 while (num_pages--) { 2995 *pbl = U64_LO(page); 2996 pbl++; 2997 *pbl = U64_HI(page); 2998 pbl++; 2999 page += QEDF_PAGE_SIZE; 3000 } 3001 /* Set the initial consumer index for cq */ 3002 qedf->global_queues[i]->cq_cons_idx = 0; 3003 } 3004 3005 list = (u32 *)qedf->p_cpuq; 3006 3007 /* 3008 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 3009 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 3010 * to the physical address which contains an array of pointers to 3011 * the physical addresses of the specific queue pages. 3012 */ 3013 for (i = 0; i < qedf->num_queues; i++) { 3014 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma); 3015 list++; 3016 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma); 3017 list++; 3018 *list = U64_LO(0); 3019 list++; 3020 *list = U64_HI(0); 3021 list++; 3022 } 3023 3024 return 0; 3025 3026 mem_alloc_failure: 3027 qedf_free_global_queues(qedf); 3028 return status; 3029 } 3030 3031 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf) 3032 { 3033 u8 sq_num_pbl_pages; 3034 u32 sq_mem_size; 3035 u32 cq_mem_size; 3036 u32 cq_num_entries; 3037 int rval; 3038 3039 /* 3040 * The number of completion queues/fastpath interrupts/status blocks 3041 * we allocation is the minimum off: 3042 * 3043 * Number of CPUs 3044 * Number allocated by qed for our PCI function 3045 */ 3046 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf); 3047 3048 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n", 3049 qedf->num_queues); 3050 3051 qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev, 3052 qedf->num_queues * sizeof(struct qedf_glbl_q_params), 3053 &qedf->hw_p_cpuq, GFP_KERNEL); 3054 3055 if (!qedf->p_cpuq) { 3056 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n"); 3057 return 1; 3058 } 3059 3060 rval = qedf_alloc_global_queues(qedf); 3061 if (rval) { 3062 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation " 3063 "failed.\n"); 3064 return 1; 3065 } 3066 3067 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */ 3068 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); 3069 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE); 3070 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE); 3071 3072 /* Calculate CQ num entries */ 3073 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); 3074 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE); 3075 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe); 3076 3077 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params)); 3078 3079 /* Setup the value for fcoe PF */ 3080 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS; 3081 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS; 3082 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr = 3083 (u64)qedf->hw_p_cpuq; 3084 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages; 3085 3086 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0; 3087 3088 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries; 3089 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues; 3090 3091 /* log_page_size: 12 for 4KB pages */ 3092 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE); 3093 3094 qedf->pf_params.fcoe_pf_params.mtu = 9000; 3095 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI; 3096 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI; 3097 3098 /* BDQ address and size */ 3099 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] = 3100 qedf->bdq_pbl_list_dma; 3101 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] = 3102 qedf->bdq_pbl_list_num_entries; 3103 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE; 3104 3105 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3106 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n", 3107 qedf->bdq_pbl_list, 3108 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0], 3109 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]); 3110 3111 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3112 "cq_num_entries=%d.\n", 3113 qedf->pf_params.fcoe_pf_params.cq_num_entries); 3114 3115 return 0; 3116 } 3117 3118 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 3119 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf) 3120 { 3121 size_t size = 0; 3122 3123 if (qedf->p_cpuq) { 3124 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params); 3125 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq, 3126 qedf->hw_p_cpuq); 3127 } 3128 3129 qedf_free_global_queues(qedf); 3130 3131 kfree(qedf->global_queues); 3132 } 3133 3134 /* 3135 * PCI driver functions 3136 */ 3137 3138 static const struct pci_device_id qedf_pci_tbl[] = { 3139 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) }, 3140 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) }, 3141 {0} 3142 }; 3143 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl); 3144 3145 static struct pci_driver qedf_pci_driver = { 3146 .name = QEDF_MODULE_NAME, 3147 .id_table = qedf_pci_tbl, 3148 .probe = qedf_probe, 3149 .remove = qedf_remove, 3150 .shutdown = qedf_shutdown, 3151 }; 3152 3153 static int __qedf_probe(struct pci_dev *pdev, int mode) 3154 { 3155 int rc = -EINVAL; 3156 struct fc_lport *lport; 3157 struct qedf_ctx *qedf; 3158 struct Scsi_Host *host; 3159 bool is_vf = false; 3160 struct qed_ll2_params params; 3161 char host_buf[20]; 3162 struct qed_link_params link_params; 3163 int status; 3164 void *task_start, *task_end; 3165 struct qed_slowpath_params slowpath_params; 3166 struct qed_probe_params qed_params; 3167 u16 tmp; 3168 3169 /* 3170 * When doing error recovery we didn't reap the lport so don't try 3171 * to reallocate it. 3172 */ 3173 if (mode != QEDF_MODE_RECOVERY) { 3174 lport = libfc_host_alloc(&qedf_host_template, 3175 sizeof(struct qedf_ctx)); 3176 3177 if (!lport) { 3178 QEDF_ERR(NULL, "Could not allocate lport.\n"); 3179 rc = -ENOMEM; 3180 goto err0; 3181 } 3182 3183 fc_disc_init(lport); 3184 3185 /* Initialize qedf_ctx */ 3186 qedf = lport_priv(lport); 3187 qedf->lport = lport; 3188 qedf->ctlr.lp = lport; 3189 qedf->pdev = pdev; 3190 qedf->dbg_ctx.pdev = pdev; 3191 qedf->dbg_ctx.host_no = lport->host->host_no; 3192 spin_lock_init(&qedf->hba_lock); 3193 INIT_LIST_HEAD(&qedf->fcports); 3194 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1; 3195 atomic_set(&qedf->num_offloads, 0); 3196 qedf->stop_io_on_error = false; 3197 pci_set_drvdata(pdev, qedf); 3198 init_completion(&qedf->fipvlan_compl); 3199 mutex_init(&qedf->stats_mutex); 3200 mutex_init(&qedf->flush_mutex); 3201 3202 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, 3203 "QLogic FastLinQ FCoE Module qedf %s, " 3204 "FW %d.%d.%d.%d\n", QEDF_VERSION, 3205 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, 3206 FW_ENGINEERING_VERSION); 3207 } else { 3208 /* Init pointers during recovery */ 3209 qedf = pci_get_drvdata(pdev); 3210 lport = qedf->lport; 3211 } 3212 3213 host = lport->host; 3214 3215 /* Allocate mempool for qedf_io_work structs */ 3216 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN, 3217 qedf_io_work_cache); 3218 if (qedf->io_mempool == NULL) { 3219 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n"); 3220 goto err1; 3221 } 3222 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n", 3223 qedf->io_mempool); 3224 3225 sprintf(host_buf, "qedf_%u_link", 3226 qedf->lport->host->host_no); 3227 qedf->link_update_wq = create_workqueue(host_buf); 3228 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update); 3229 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery); 3230 INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump); 3231 qedf->fipvlan_retries = qedf_fipvlan_retries; 3232 /* Set a default prio in case DCBX doesn't converge */ 3233 if (qedf_default_prio > -1) { 3234 /* 3235 * This is the case where we pass a modparam in so we want to 3236 * honor it even if dcbx doesn't converge. 3237 */ 3238 qedf->prio = qedf_default_prio; 3239 } else 3240 qedf->prio = QEDF_DEFAULT_PRIO; 3241 3242 /* 3243 * Common probe. Takes care of basic hardware init and pci_* 3244 * functions. 3245 */ 3246 memset(&qed_params, 0, sizeof(qed_params)); 3247 qed_params.protocol = QED_PROTOCOL_FCOE; 3248 qed_params.dp_module = qedf_dp_module; 3249 qed_params.dp_level = qedf_dp_level; 3250 qed_params.is_vf = is_vf; 3251 qedf->cdev = qed_ops->common->probe(pdev, &qed_params); 3252 if (!qedf->cdev) { 3253 QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n"); 3254 rc = -ENODEV; 3255 goto err1; 3256 } 3257 3258 /* Learn information crucial for qedf to progress */ 3259 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); 3260 if (rc) { 3261 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n"); 3262 goto err1; 3263 } 3264 3265 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 3266 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n", 3267 qedf->dev_info.common.num_hwfns, 3268 qed_ops->common->get_affin_hwfn_idx(qedf->cdev)); 3269 3270 /* queue allocation code should come here 3271 * order should be 3272 * slowpath_start 3273 * status block allocation 3274 * interrupt registration (to get min number of queues) 3275 * set_fcoe_pf_param 3276 * qed_sp_fcoe_func_start 3277 */ 3278 rc = qedf_set_fcoe_pf_param(qedf); 3279 if (rc) { 3280 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n"); 3281 goto err2; 3282 } 3283 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3284 3285 /* Record BDQ producer doorbell addresses */ 3286 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr; 3287 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr; 3288 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3289 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod, 3290 qedf->bdq_secondary_prod); 3291 3292 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf); 3293 3294 rc = qedf_prepare_sb(qedf); 3295 if (rc) { 3296 3297 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3298 goto err2; 3299 } 3300 3301 /* Start the Slowpath-process */ 3302 slowpath_params.int_mode = QED_INT_MODE_MSIX; 3303 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER; 3304 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER; 3305 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER; 3306 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER; 3307 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE); 3308 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params); 3309 if (rc) { 3310 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); 3311 goto err2; 3312 } 3313 3314 /* 3315 * update_pf_params needs to be called before and after slowpath 3316 * start 3317 */ 3318 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); 3319 3320 /* Setup interrupts */ 3321 rc = qedf_setup_int(qedf); 3322 if (rc) { 3323 QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n"); 3324 goto err3; 3325 } 3326 3327 rc = qed_ops->start(qedf->cdev, &qedf->tasks); 3328 if (rc) { 3329 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n"); 3330 goto err4; 3331 } 3332 task_start = qedf_get_task_mem(&qedf->tasks, 0); 3333 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1); 3334 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, " 3335 "end=%p block_size=%u.\n", task_start, task_end, 3336 qedf->tasks.size); 3337 3338 /* 3339 * We need to write the number of BDs in the BDQ we've preallocated so 3340 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 3341 * packet arrives. 3342 */ 3343 qedf->bdq_prod_idx = QEDF_BDQ_SIZE; 3344 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3345 "Writing %d to primary and secondary BDQ doorbell registers.\n", 3346 qedf->bdq_prod_idx); 3347 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod); 3348 tmp = readw(qedf->bdq_primary_prod); 3349 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod); 3350 tmp = readw(qedf->bdq_secondary_prod); 3351 3352 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3353 3354 /* Now that the dev_info struct has been filled in set the MAC 3355 * address 3356 */ 3357 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac); 3358 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n", 3359 qedf->mac); 3360 3361 /* 3362 * Set the WWNN and WWPN in the following way: 3363 * 3364 * If the info we get from qed is non-zero then use that to set the 3365 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based 3366 * on the MAC address. 3367 */ 3368 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) { 3369 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3370 "Setting WWPN and WWNN from qed dev_info.\n"); 3371 qedf->wwnn = qedf->dev_info.wwnn; 3372 qedf->wwpn = qedf->dev_info.wwpn; 3373 } else { 3374 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3375 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n"); 3376 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0); 3377 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0); 3378 } 3379 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx " 3380 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn); 3381 3382 sprintf(host_buf, "host_%d", host->host_no); 3383 qed_ops->common->set_name(qedf->cdev, host_buf); 3384 3385 /* Allocate cmd mgr */ 3386 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf); 3387 if (!qedf->cmd_mgr) { 3388 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n"); 3389 rc = -ENOMEM; 3390 goto err5; 3391 } 3392 3393 if (mode != QEDF_MODE_RECOVERY) { 3394 host->transportt = qedf_fc_transport_template; 3395 host->max_lun = qedf_max_lun; 3396 host->max_cmd_len = QEDF_MAX_CDB_LEN; 3397 host->can_queue = FCOE_PARAMS_NUM_TASKS; 3398 rc = scsi_add_host(host, &pdev->dev); 3399 if (rc) { 3400 QEDF_WARN(&qedf->dbg_ctx, 3401 "Error adding Scsi_Host rc=0x%x.\n", rc); 3402 goto err6; 3403 } 3404 } 3405 3406 memset(¶ms, 0, sizeof(params)); 3407 params.mtu = QEDF_LL2_BUF_SIZE; 3408 ether_addr_copy(params.ll2_mac_address, qedf->mac); 3409 3410 /* Start LL2 processing thread */ 3411 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no); 3412 qedf->ll2_recv_wq = 3413 create_workqueue(host_buf); 3414 if (!qedf->ll2_recv_wq) { 3415 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n"); 3416 rc = -ENOMEM; 3417 goto err7; 3418 } 3419 3420 #ifdef CONFIG_DEBUG_FS 3421 qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops, 3422 qedf_dbg_fops); 3423 #endif 3424 3425 /* Start LL2 */ 3426 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf); 3427 rc = qed_ops->ll2->start(qedf->cdev, ¶ms); 3428 if (rc) { 3429 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n"); 3430 goto err7; 3431 } 3432 set_bit(QEDF_LL2_STARTED, &qedf->flags); 3433 3434 /* Set initial FIP/FCoE VLAN to NULL */ 3435 qedf->vlan_id = 0; 3436 3437 /* 3438 * No need to setup fcoe_ctlr or fc_lport objects during recovery since 3439 * they were not reaped during the unload process. 3440 */ 3441 if (mode != QEDF_MODE_RECOVERY) { 3442 /* Setup imbedded fcoe controller */ 3443 qedf_fcoe_ctlr_setup(qedf); 3444 3445 /* Setup lport */ 3446 rc = qedf_lport_setup(qedf); 3447 if (rc) { 3448 QEDF_ERR(&(qedf->dbg_ctx), 3449 "qedf_lport_setup failed.\n"); 3450 goto err7; 3451 } 3452 } 3453 3454 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no); 3455 qedf->timer_work_queue = 3456 create_workqueue(host_buf); 3457 if (!qedf->timer_work_queue) { 3458 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer " 3459 "workqueue.\n"); 3460 rc = -ENOMEM; 3461 goto err7; 3462 } 3463 3464 /* DPC workqueue is not reaped during recovery unload */ 3465 if (mode != QEDF_MODE_RECOVERY) { 3466 sprintf(host_buf, "qedf_%u_dpc", 3467 qedf->lport->host->host_no); 3468 qedf->dpc_wq = create_workqueue(host_buf); 3469 } 3470 3471 /* 3472 * GRC dump and sysfs parameters are not reaped during the recovery 3473 * unload process. 3474 */ 3475 if (mode != QEDF_MODE_RECOVERY) { 3476 qedf->grcdump_size = 3477 qed_ops->common->dbg_all_data_size(qedf->cdev); 3478 if (qedf->grcdump_size) { 3479 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump, 3480 qedf->grcdump_size); 3481 if (rc) { 3482 QEDF_ERR(&(qedf->dbg_ctx), 3483 "GRC Dump buffer alloc failed.\n"); 3484 qedf->grcdump = NULL; 3485 } 3486 3487 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, 3488 "grcdump: addr=%p, size=%u.\n", 3489 qedf->grcdump, qedf->grcdump_size); 3490 } 3491 qedf_create_sysfs_ctx_attr(qedf); 3492 3493 /* Initialize I/O tracing for this adapter */ 3494 spin_lock_init(&qedf->io_trace_lock); 3495 qedf->io_trace_idx = 0; 3496 } 3497 3498 init_completion(&qedf->flogi_compl); 3499 3500 status = qed_ops->common->update_drv_state(qedf->cdev, true); 3501 if (status) 3502 QEDF_ERR(&(qedf->dbg_ctx), 3503 "Failed to send drv state to MFW.\n"); 3504 3505 memset(&link_params, 0, sizeof(struct qed_link_params)); 3506 link_params.link_up = true; 3507 status = qed_ops->common->set_link(qedf->cdev, &link_params); 3508 if (status) 3509 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n"); 3510 3511 /* Start/restart discovery */ 3512 if (mode == QEDF_MODE_RECOVERY) 3513 fcoe_ctlr_link_up(&qedf->ctlr); 3514 else 3515 fc_fabric_login(lport); 3516 3517 /* All good */ 3518 return 0; 3519 3520 err7: 3521 if (qedf->ll2_recv_wq) 3522 destroy_workqueue(qedf->ll2_recv_wq); 3523 fc_remove_host(qedf->lport->host); 3524 scsi_remove_host(qedf->lport->host); 3525 #ifdef CONFIG_DEBUG_FS 3526 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3527 #endif 3528 err6: 3529 qedf_cmd_mgr_free(qedf->cmd_mgr); 3530 err5: 3531 qed_ops->stop(qedf->cdev); 3532 err4: 3533 qedf_free_fcoe_pf_param(qedf); 3534 qedf_sync_free_irqs(qedf); 3535 err3: 3536 qed_ops->common->slowpath_stop(qedf->cdev); 3537 err2: 3538 qed_ops->common->remove(qedf->cdev); 3539 err1: 3540 scsi_host_put(lport->host); 3541 err0: 3542 return rc; 3543 } 3544 3545 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id) 3546 { 3547 return __qedf_probe(pdev, QEDF_MODE_NORMAL); 3548 } 3549 3550 static void __qedf_remove(struct pci_dev *pdev, int mode) 3551 { 3552 struct qedf_ctx *qedf; 3553 int rc; 3554 3555 if (!pdev) { 3556 QEDF_ERR(NULL, "pdev is NULL.\n"); 3557 return; 3558 } 3559 3560 qedf = pci_get_drvdata(pdev); 3561 3562 /* 3563 * Prevent race where we're in board disable work and then try to 3564 * rmmod the module. 3565 */ 3566 if (test_bit(QEDF_UNLOADING, &qedf->flags)) { 3567 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n"); 3568 return; 3569 } 3570 3571 if (mode != QEDF_MODE_RECOVERY) 3572 set_bit(QEDF_UNLOADING, &qedf->flags); 3573 3574 /* Logoff the fabric to upload all connections */ 3575 if (mode == QEDF_MODE_RECOVERY) 3576 fcoe_ctlr_link_down(&qedf->ctlr); 3577 else 3578 fc_fabric_logoff(qedf->lport); 3579 3580 if (qedf_wait_for_upload(qedf) == false) 3581 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 3582 3583 #ifdef CONFIG_DEBUG_FS 3584 qedf_dbg_host_exit(&(qedf->dbg_ctx)); 3585 #endif 3586 3587 /* Stop any link update handling */ 3588 cancel_delayed_work_sync(&qedf->link_update); 3589 destroy_workqueue(qedf->link_update_wq); 3590 qedf->link_update_wq = NULL; 3591 3592 if (qedf->timer_work_queue) 3593 destroy_workqueue(qedf->timer_work_queue); 3594 3595 /* Stop Light L2 */ 3596 clear_bit(QEDF_LL2_STARTED, &qedf->flags); 3597 qed_ops->ll2->stop(qedf->cdev); 3598 if (qedf->ll2_recv_wq) 3599 destroy_workqueue(qedf->ll2_recv_wq); 3600 3601 /* Stop fastpath */ 3602 qedf_sync_free_irqs(qedf); 3603 qedf_destroy_sb(qedf); 3604 3605 /* 3606 * During recovery don't destroy OS constructs that represent the 3607 * physical port. 3608 */ 3609 if (mode != QEDF_MODE_RECOVERY) { 3610 qedf_free_grc_dump_buf(&qedf->grcdump); 3611 qedf_remove_sysfs_ctx_attr(qedf); 3612 3613 /* Remove all SCSI/libfc/libfcoe structures */ 3614 fcoe_ctlr_destroy(&qedf->ctlr); 3615 fc_lport_destroy(qedf->lport); 3616 fc_remove_host(qedf->lport->host); 3617 scsi_remove_host(qedf->lport->host); 3618 } 3619 3620 qedf_cmd_mgr_free(qedf->cmd_mgr); 3621 3622 if (mode != QEDF_MODE_RECOVERY) { 3623 fc_exch_mgr_free(qedf->lport); 3624 fc_lport_free_stats(qedf->lport); 3625 3626 /* Wait for all vports to be reaped */ 3627 qedf_wait_for_vport_destroy(qedf); 3628 } 3629 3630 /* 3631 * Now that all connections have been uploaded we can stop the 3632 * rest of the qed operations 3633 */ 3634 qed_ops->stop(qedf->cdev); 3635 3636 if (mode != QEDF_MODE_RECOVERY) { 3637 if (qedf->dpc_wq) { 3638 /* Stop general DPC handling */ 3639 destroy_workqueue(qedf->dpc_wq); 3640 qedf->dpc_wq = NULL; 3641 } 3642 } 3643 3644 /* Final shutdown for the board */ 3645 qedf_free_fcoe_pf_param(qedf); 3646 if (mode != QEDF_MODE_RECOVERY) { 3647 qed_ops->common->set_power_state(qedf->cdev, PCI_D0); 3648 pci_set_drvdata(pdev, NULL); 3649 } 3650 3651 rc = qed_ops->common->update_drv_state(qedf->cdev, false); 3652 if (rc) 3653 QEDF_ERR(&(qedf->dbg_ctx), 3654 "Failed to send drv state to MFW.\n"); 3655 3656 qed_ops->common->slowpath_stop(qedf->cdev); 3657 qed_ops->common->remove(qedf->cdev); 3658 3659 mempool_destroy(qedf->io_mempool); 3660 3661 /* Only reap the Scsi_host on a real removal */ 3662 if (mode != QEDF_MODE_RECOVERY) 3663 scsi_host_put(qedf->lport->host); 3664 } 3665 3666 static void qedf_remove(struct pci_dev *pdev) 3667 { 3668 /* Check to make sure this function wasn't already disabled */ 3669 if (!atomic_read(&pdev->enable_cnt)) 3670 return; 3671 3672 __qedf_remove(pdev, QEDF_MODE_NORMAL); 3673 } 3674 3675 void qedf_wq_grcdump(struct work_struct *work) 3676 { 3677 struct qedf_ctx *qedf = 3678 container_of(work, struct qedf_ctx, grcdump_work.work); 3679 3680 QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n"); 3681 qedf_capture_grc_dump(qedf); 3682 } 3683 3684 /* 3685 * Protocol TLV handler 3686 */ 3687 void qedf_get_protocol_tlv_data(void *dev, void *data) 3688 { 3689 struct qedf_ctx *qedf = dev; 3690 struct qed_mfw_tlv_fcoe *fcoe = data; 3691 struct fc_lport *lport = qedf->lport; 3692 struct Scsi_Host *host = lport->host; 3693 struct fc_host_attrs *fc_host = shost_to_fc_host(host); 3694 struct fc_host_statistics *hst; 3695 3696 /* Force a refresh of the fc_host stats including offload stats */ 3697 hst = qedf_fc_get_host_stats(host); 3698 3699 fcoe->qos_pri_set = true; 3700 fcoe->qos_pri = 3; /* Hard coded to 3 in driver */ 3701 3702 fcoe->ra_tov_set = true; 3703 fcoe->ra_tov = lport->r_a_tov; 3704 3705 fcoe->ed_tov_set = true; 3706 fcoe->ed_tov = lport->e_d_tov; 3707 3708 fcoe->npiv_state_set = true; 3709 fcoe->npiv_state = 1; /* NPIV always enabled */ 3710 3711 fcoe->num_npiv_ids_set = true; 3712 fcoe->num_npiv_ids = fc_host->npiv_vports_inuse; 3713 3714 /* Certain attributes we only want to set if we've selected an FCF */ 3715 if (qedf->ctlr.sel_fcf) { 3716 fcoe->switch_name_set = true; 3717 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name); 3718 } 3719 3720 fcoe->port_state_set = true; 3721 /* For qedf we're either link down or fabric attach */ 3722 if (lport->link_up) 3723 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC; 3724 else 3725 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE; 3726 3727 fcoe->link_failures_set = true; 3728 fcoe->link_failures = (u16)hst->link_failure_count; 3729 3730 fcoe->fcoe_txq_depth_set = true; 3731 fcoe->fcoe_rxq_depth_set = true; 3732 fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS; 3733 fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS; 3734 3735 fcoe->fcoe_rx_frames_set = true; 3736 fcoe->fcoe_rx_frames = hst->rx_frames; 3737 3738 fcoe->fcoe_tx_frames_set = true; 3739 fcoe->fcoe_tx_frames = hst->tx_frames; 3740 3741 fcoe->fcoe_rx_bytes_set = true; 3742 fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000; 3743 3744 fcoe->fcoe_tx_bytes_set = true; 3745 fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000; 3746 3747 fcoe->crc_count_set = true; 3748 fcoe->crc_count = hst->invalid_crc_count; 3749 3750 fcoe->tx_abts_set = true; 3751 fcoe->tx_abts = hst->fcp_packet_aborts; 3752 3753 fcoe->tx_lun_rst_set = true; 3754 fcoe->tx_lun_rst = qedf->lun_resets; 3755 3756 fcoe->abort_task_sets_set = true; 3757 fcoe->abort_task_sets = qedf->packet_aborts; 3758 3759 fcoe->scsi_busy_set = true; 3760 fcoe->scsi_busy = qedf->busy; 3761 3762 fcoe->scsi_tsk_full_set = true; 3763 fcoe->scsi_tsk_full = qedf->task_set_fulls; 3764 } 3765 3766 static void qedf_shutdown(struct pci_dev *pdev) 3767 { 3768 __qedf_remove(pdev, QEDF_MODE_NORMAL); 3769 } 3770 3771 /* Generic TLV data callback */ 3772 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 3773 { 3774 struct qedf_ctx *qedf; 3775 3776 if (!dev) { 3777 QEDF_INFO(NULL, QEDF_LOG_EVT, 3778 "dev is NULL so ignoring get_generic_tlv_data request.\n"); 3779 return; 3780 } 3781 qedf = (struct qedf_ctx *)dev; 3782 3783 memset(data, 0, sizeof(struct qed_generic_tlvs)); 3784 ether_addr_copy(data->mac[0], qedf->mac); 3785 } 3786 3787 /* 3788 * Module Init/Remove 3789 */ 3790 3791 static int __init qedf_init(void) 3792 { 3793 int ret; 3794 3795 /* If debug=1 passed, set the default log mask */ 3796 if (qedf_debug == QEDF_LOG_DEFAULT) 3797 qedf_debug = QEDF_DEFAULT_LOG_MASK; 3798 3799 /* 3800 * Check that default prio for FIP/FCoE traffic is between 0..7 if a 3801 * value has been set 3802 */ 3803 if (qedf_default_prio > -1) 3804 if (qedf_default_prio > 7) { 3805 qedf_default_prio = QEDF_DEFAULT_PRIO; 3806 QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n", 3807 QEDF_DEFAULT_PRIO); 3808 } 3809 3810 /* Print driver banner */ 3811 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR, 3812 QEDF_VERSION); 3813 3814 /* Create kmem_cache for qedf_io_work structs */ 3815 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache", 3816 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL); 3817 if (qedf_io_work_cache == NULL) { 3818 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n"); 3819 goto err1; 3820 } 3821 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n", 3822 qedf_io_work_cache); 3823 3824 qed_ops = qed_get_fcoe_ops(); 3825 if (!qed_ops) { 3826 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n"); 3827 goto err1; 3828 } 3829 3830 #ifdef CONFIG_DEBUG_FS 3831 qedf_dbg_init("qedf"); 3832 #endif 3833 3834 qedf_fc_transport_template = 3835 fc_attach_transport(&qedf_fc_transport_fn); 3836 if (!qedf_fc_transport_template) { 3837 QEDF_ERR(NULL, "Could not register with FC transport\n"); 3838 goto err2; 3839 } 3840 3841 qedf_fc_vport_transport_template = 3842 fc_attach_transport(&qedf_fc_vport_transport_fn); 3843 if (!qedf_fc_vport_transport_template) { 3844 QEDF_ERR(NULL, "Could not register vport template with FC " 3845 "transport\n"); 3846 goto err3; 3847 } 3848 3849 qedf_io_wq = create_workqueue("qedf_io_wq"); 3850 if (!qedf_io_wq) { 3851 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n"); 3852 goto err4; 3853 } 3854 3855 qedf_cb_ops.get_login_failures = qedf_get_login_failures; 3856 3857 ret = pci_register_driver(&qedf_pci_driver); 3858 if (ret) { 3859 QEDF_ERR(NULL, "Failed to register driver\n"); 3860 goto err5; 3861 } 3862 3863 return 0; 3864 3865 err5: 3866 destroy_workqueue(qedf_io_wq); 3867 err4: 3868 fc_release_transport(qedf_fc_vport_transport_template); 3869 err3: 3870 fc_release_transport(qedf_fc_transport_template); 3871 err2: 3872 #ifdef CONFIG_DEBUG_FS 3873 qedf_dbg_exit(); 3874 #endif 3875 qed_put_fcoe_ops(); 3876 err1: 3877 return -EINVAL; 3878 } 3879 3880 static void __exit qedf_cleanup(void) 3881 { 3882 pci_unregister_driver(&qedf_pci_driver); 3883 3884 destroy_workqueue(qedf_io_wq); 3885 3886 fc_release_transport(qedf_fc_vport_transport_template); 3887 fc_release_transport(qedf_fc_transport_template); 3888 #ifdef CONFIG_DEBUG_FS 3889 qedf_dbg_exit(); 3890 #endif 3891 qed_put_fcoe_ops(); 3892 3893 kmem_cache_destroy(qedf_io_work_cache); 3894 } 3895 3896 MODULE_LICENSE("GPL"); 3897 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module"); 3898 MODULE_AUTHOR("QLogic Corporation"); 3899 MODULE_VERSION(QEDF_VERSION); 3900 module_init(qedf_init); 3901 module_exit(qedf_cleanup); 3902