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